* [PATCH 02/16] arm: at91: use macro to declare soc boot data
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:26 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 03/16] ARM: at91: gpio: implement request Jean-Christophe PLAGNIOL-VILLARD
` (13 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:26 UTC (permalink / raw)
To: linux-arm-kernel
Instead of check the pointer of the init function, check the new builtin bool
to known if the soc is enabled.
This is needed as with the switch to the pinctrl the init will be NULL on pure
DT SoC.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/mach-at91/at91rm9200.c | 4 ++--
arch/arm/mach-at91/at91sam9260.c | 4 ++--
arch/arm/mach-at91/at91sam9261.c | 4 ++--
arch/arm/mach-at91/at91sam9263.c | 4 ++--
arch/arm/mach-at91/at91sam9g45.c | 4 ++--
arch/arm/mach-at91/at91sam9n12.c | 4 ++--
arch/arm/mach-at91/at91sam9rl.c | 4 ++--
arch/arm/mach-at91/at91sam9x5.c | 4 ++--
arch/arm/mach-at91/soc.h | 12 +++++++++++-
9 files changed, 27 insertions(+), 17 deletions(-)
diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index 6f50c67..ea71fdd 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -360,10 +360,10 @@ static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
0 /* Advanced Interrupt Controller (IRQ6) */
};
-struct at91_init_soc __initdata at91rm9200_soc = {
+AT91_SOC_START(rm9200)
.map_io = at91rm9200_map_io,
.default_irq_priority = at91rm9200_default_irq_priority,
.ioremap_registers = at91rm9200_ioremap_registers,
.register_clocks = at91rm9200_register_clocks,
.init = at91rm9200_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c
index 30c7f26..4462c8d 100644
--- a/arch/arm/mach-at91/at91sam9260.c
+++ b/arch/arm/mach-at91/at91sam9260.c
@@ -387,10 +387,10 @@ static unsigned int at91sam9260_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller */
};
-struct at91_init_soc __initdata at91sam9260_soc = {
+AT91_SOC_START(sam9260)
.map_io = at91sam9260_map_io,
.default_irq_priority = at91sam9260_default_irq_priority,
.ioremap_registers = at91sam9260_ioremap_registers,
.register_clocks = at91sam9260_register_clocks,
.init = at91sam9260_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9261.c b/arch/arm/mach-at91/at91sam9261.c
index f40762c..488f639 100644
--- a/arch/arm/mach-at91/at91sam9261.c
+++ b/arch/arm/mach-at91/at91sam9261.c
@@ -332,10 +332,10 @@ static unsigned int at91sam9261_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller */
};
-struct at91_init_soc __initdata at91sam9261_soc = {
+AT91_SOC_START(sam9261)
.map_io = at91sam9261_map_io,
.default_irq_priority = at91sam9261_default_irq_priority,
.ioremap_registers = at91sam9261_ioremap_registers,
.register_clocks = at91sam9261_register_clocks,
.init = at91sam9261_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
index 84b3810..e642846 100644
--- a/arch/arm/mach-at91/at91sam9263.c
+++ b/arch/arm/mach-at91/at91sam9263.c
@@ -363,10 +363,10 @@ static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller (IRQ1) */
};
-struct at91_init_soc __initdata at91sam9263_soc = {
+AT91_SOC_START(sam9263)
.map_io = at91sam9263_map_io,
.default_irq_priority = at91sam9263_default_irq_priority,
.ioremap_registers = at91sam9263_ioremap_registers,
.register_clocks = at91sam9263_register_clocks,
.init = at91sam9263_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c
index ef6cedd..fb1fba1 100644
--- a/arch/arm/mach-at91/at91sam9g45.c
+++ b/arch/arm/mach-at91/at91sam9g45.c
@@ -405,10 +405,10 @@ static unsigned int at91sam9g45_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller (IRQ0) */
};
-struct at91_init_soc __initdata at91sam9g45_soc = {
+AT91_SOC_START(sam9g45)
.map_io = at91sam9g45_map_io,
.default_irq_priority = at91sam9g45_default_irq_priority,
.ioremap_registers = at91sam9g45_ioremap_registers,
.register_clocks = at91sam9g45_register_clocks,
.init = at91sam9g45_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9n12.c b/arch/arm/mach-at91/at91sam9n12.c
index 0849466..80b2b7d 100644
--- a/arch/arm/mach-at91/at91sam9n12.c
+++ b/arch/arm/mach-at91/at91sam9n12.c
@@ -226,8 +226,8 @@ void __init at91sam9n12_initialize(void)
at91_gpio_init(NULL, 0);
}
-struct at91_init_soc __initdata at91sam9n12_soc = {
+AT91_SOC_START(sam9n12)
.map_io = at91sam9n12_map_io,
.register_clocks = at91sam9n12_register_clocks,
.init = at91sam9n12_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c
index 72ce50a..e5fab22 100644
--- a/arch/arm/mach-at91/at91sam9rl.c
+++ b/arch/arm/mach-at91/at91sam9rl.c
@@ -336,10 +336,10 @@ static unsigned int at91sam9rl_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller */
};
-struct at91_init_soc __initdata at91sam9rl_soc = {
+AT91_SOC_START(sam9rl)
.map_io = at91sam9rl_map_io,
.default_irq_priority = at91sam9rl_default_irq_priority,
.ioremap_registers = at91sam9rl_ioremap_registers,
.register_clocks = at91sam9rl_register_clocks,
.init = at91sam9rl_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9x5.c b/arch/arm/mach-at91/at91sam9x5.c
index 477cf9d..56b6988 100644
--- a/arch/arm/mach-at91/at91sam9x5.c
+++ b/arch/arm/mach-at91/at91sam9x5.c
@@ -320,8 +320,8 @@ void __init at91sam9x5_initialize(void)
* Interrupt initialization
* -------------------------------------------------------------------- */
-struct at91_init_soc __initdata at91sam9x5_soc = {
+AT91_SOC_START(sam9x5)
.map_io = at91sam9x5_map_io,
.register_clocks = at91sam9x5_register_clocks,
.init = at91sam9x5_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/soc.h b/arch/arm/mach-at91/soc.h
index a9cfeb1..9c6d3d4 100644
--- a/arch/arm/mach-at91/soc.h
+++ b/arch/arm/mach-at91/soc.h
@@ -5,6 +5,7 @@
*/
struct at91_init_soc {
+ int builtin;
unsigned int *default_irq_priority;
void (*map_io)(void);
void (*ioremap_registers)(void);
@@ -22,9 +23,18 @@ extern struct at91_init_soc at91sam9rl_soc;
extern struct at91_init_soc at91sam9x5_soc;
extern struct at91_init_soc at91sam9n12_soc;
+#define AT91_SOC_START(_name) \
+struct at91_init_soc __initdata at91##_name##_soc \
+ __used \
+ = { \
+ .builtin = 1, \
+
+#define AT91_SOC_END \
+};
+
static inline int at91_soc_is_enabled(void)
{
- return at91_boot_soc.init != NULL;
+ return at91_boot_soc.builtin;
}
#if !defined(CONFIG_SOC_AT91RM9200)
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 03/16] ARM: at91: gpio: implement request
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:26 ` [PATCH 02/16] arm: at91: use macro to declare soc boot data Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 04/16] at91: regroup gpio and pinctrl under the same ranges Jean-Christophe PLAGNIOL-VILLARD
` (12 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Configure the pin as pio when requested.
It is needed to configure the pin as PIO at "request time" when we are
using DT. Indeed, the muxing via old AT91 API is not allowed anymore if
we are using the plain gpiolib.
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/mach-at91/gpio.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index be42cf0..3b8f463 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -46,6 +46,7 @@ struct at91_gpio_chip {
#define to_at91_gpio_chip(c) container_of(c, struct at91_gpio_chip, chip)
+static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset);
static void at91_gpiolib_dbg_show(struct seq_file *s, struct gpio_chip *chip);
static void at91_gpiolib_set(struct gpio_chip *chip, unsigned offset, int val);
static int at91_gpiolib_get(struct gpio_chip *chip, unsigned offset);
@@ -59,6 +60,7 @@ static int at91_gpiolib_to_irq(struct gpio_chip *chip, unsigned offset);
{ \
.chip = { \
.label = name, \
+ .request = at91_gpiolib_request, \
.direction_input = at91_gpiolib_direction_input, \
.direction_output = at91_gpiolib_direction_output, \
.get = at91_gpiolib_get, \
@@ -862,6 +864,16 @@ void __init at91_gpio_irq_setup(void)
}
/* gpiolib support */
+static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset)
+{
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned mask = 1 << offset;
+
+ __raw_writel(mask, pio + PIO_PER);
+ return 0;
+}
+
static int at91_gpiolib_direction_input(struct gpio_chip *chip,
unsigned offset)
{
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 04/16] at91: regroup gpio and pinctrl under the same ranges
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:26 ` [PATCH 02/16] arm: at91: use macro to declare soc boot data Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 03/16] ARM: at91: gpio: implement request Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 05/16] arm: at91: at91sam9x5: fix gpio number per bank Jean-Christophe PLAGNIOL-VILLARD
` (11 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Fix also the reg size as we have 512 bytes bank not 256 bytes per gpio/mux
controller
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/boot/dts/at91sam9260.dtsi | 59 ++++++++++++---------
arch/arm/boot/dts/at91sam9263.dtsi | 102 +++++++++++++++++++-----------------
arch/arm/boot/dts/at91sam9g45.dtsi | 95 +++++++++++++++++----------------
arch/arm/boot/dts/at91sam9n12.dtsi | 83 +++++++++++++++--------------
arch/arm/boot/dts/at91sam9x5.dtsi | 77 ++++++++++++++-------------
5 files changed, 225 insertions(+), 191 deletions(-)
diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi
index 7c95f76..3ae7abcd 100644
--- a/arch/arm/boot/dts/at91sam9260.dtsi
+++ b/arch/arm/boot/dts/at91sam9260.dtsi
@@ -97,34 +97,41 @@
interrupts = <26 4 0 27 4 0 28 4 0>;
};
- pioA: gpio at fffff400 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff400 0x100>;
- interrupts = <2 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ pinctrl at fffff400 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
+ ranges = <0xfffff400 0xfffff400 0x600>;
+
+ pioA: gpio at fffff400 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff400 0x200>;
+ interrupts = <2 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
- pioB: gpio at fffff600 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff600 0x100>;
- interrupts = <3 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ pioB: gpio at fffff600 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff600 0x200>;
+ interrupts = <3 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
- pioC: gpio at fffff800 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff800 0x100>;
- interrupts = <4 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
+ pioC: gpio at fffff800 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff800 0x200>;
+ interrupts = <4 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
};
dbgu: serial at fffff200 {
diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi
index 195019b..ff882a6 100644
--- a/arch/arm/boot/dts/at91sam9263.dtsi
+++ b/arch/arm/boot/dts/at91sam9263.dtsi
@@ -88,54 +88,60 @@
reg = <0xfffffd10 0x10>;
};
- pioA: gpio at fffff200 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff200 0x100>;
- interrupts = <2 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- pioB: gpio at fffff400 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff400 0x100>;
- interrupts = <3 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- pioC: gpio at fffff600 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff600 0x100>;
- interrupts = <4 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- pioD: gpio at fffff800 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff800 0x100>;
- interrupts = <4 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- pioE: gpio at fffffa00 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffffa00 0x100>;
- interrupts = <4 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
+ pinctrl at fffff200 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
+ ranges = <0xfffff200 0xfffff200 0xa00>;
+
+ pioA: gpio at fffff200 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff200 0x200>;
+ interrupts = <2 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ pioB: gpio at fffff400 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff400 0x200>;
+ interrupts = <3 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ pioC: gpio at fffff600 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff600 0x200>;
+ interrupts = <4 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ pioD: gpio at fffff800 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff800 0x200>;
+ interrupts = <4 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ pioE: gpio at fffffa00 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffffa00 0x200>;
+ interrupts = <4 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
};
dbgu: serial at ffffee00 {
diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
index 63751b1..990f2b1 100644
--- a/arch/arm/boot/dts/at91sam9g45.dtsi
+++ b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -106,54 +106,61 @@
interrupts = <21 4 0>;
};
- pioA: gpio at fffff200 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff200 0x100>;
- interrupts = <2 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ pinctrl at fffff200 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
+ ranges = <0xfffff200 0xfffff200 0xa00>;
+
+ pioA: gpio at fffff200 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff200 0x200>;
+ interrupts = <2 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
- pioB: gpio at fffff400 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff400 0x100>;
- interrupts = <3 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ pioB: gpio at fffff400 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff400 0x200>;
+ interrupts = <3 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
- pioC: gpio at fffff600 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff600 0x100>;
- interrupts = <4 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ pioC: gpio at fffff600 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff600 0x200>;
+ interrupts = <4 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
- pioD: gpio at fffff800 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff800 0x100>;
- interrupts = <5 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ pioD: gpio at fffff800 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffff800 0x200>;
+ interrupts = <5 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
- pioE: gpio at fffffa00 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffffa00 0x100>;
- interrupts = <5 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
+ pioE: gpio at fffffa00 {
+ compatible = "atmel,at91rm9200-gpio";
+ reg = <0xfffffa00 0x200>;
+ interrupts = <5 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
};
dbgu: serial at ffffee00 {
diff --git a/arch/arm/boot/dts/at91sam9n12.dtsi b/arch/arm/boot/dts/at91sam9n12.dtsi
index ef9336a..29706bd 100644
--- a/arch/arm/boot/dts/at91sam9n12.dtsi
+++ b/arch/arm/boot/dts/at91sam9n12.dtsi
@@ -100,44 +100,51 @@
interrupts = <20 4 0>;
};
- pioA: gpio at fffff400 {
- compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
- reg = <0xfffff400 0x100>;
- interrupts = <2 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- pioB: gpio at fffff600 {
- compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
- reg = <0xfffff600 0x100>;
- interrupts = <2 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- pioC: gpio at fffff800 {
- compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
- reg = <0xfffff800 0x100>;
- interrupts = <3 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- pioD: gpio at fffffa00 {
- compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
- reg = <0xfffffa00 0x100>;
- interrupts = <3 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
+ pinctrl at fffff400 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
+ ranges = <0xfffff400 0xfffff400 0x800>;
+
+ pioA: gpio at fffff400 {
+ compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
+ reg = <0xfffff400 0x200>;
+ interrupts = <2 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ pioB: gpio at fffff600 {
+ compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
+ reg = <0xfffff600 0x200>;
+ interrupts = <2 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ pioC: gpio at fffff800 {
+ compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
+ reg = <0xfffff800 0x200>;
+ interrupts = <3 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ pioD: gpio at fffffa00 {
+ compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
+ reg = <0xfffffa00 0x200>;
+ interrupts = <3 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
};
dbgu: serial at fffff200 {
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index 8a387a8..bc6cd3f 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -108,44 +108,51 @@
interrupts = <21 4 0>;
};
- pioA: gpio at fffff400 {
- compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
- reg = <0xfffff400 0x100>;
- interrupts = <2 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ pinctrl at fffff200 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
+ ranges = <0xfffff400 0xfffff400 0x800>;
+
+ pioA: gpio at fffff400 {
+ compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
+ reg = <0xfffff400 0x200>;
+ interrupts = <2 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
- pioB: gpio at fffff600 {
- compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
- reg = <0xfffff600 0x100>;
- interrupts = <2 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ pioB: gpio at fffff600 {
+ compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
+ reg = <0xfffff600 0x200>;
+ interrupts = <2 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
- pioC: gpio at fffff800 {
- compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
- reg = <0xfffff800 0x100>;
- interrupts = <3 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ pioC: gpio at fffff800 {
+ compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
+ reg = <0xfffff800 0x200>;
+ interrupts = <3 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
- pioD: gpio at fffffa00 {
- compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
- reg = <0xfffffa00 0x100>;
- interrupts = <3 4 1>;
- #gpio-cells = <2>;
- gpio-controller;
- interrupt-controller;
- #interrupt-cells = <2>;
+ pioD: gpio at fffffa00 {
+ compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
+ reg = <0xfffffa00 0x200>;
+ interrupts = <3 4 1>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
};
dbgu: serial at fffff200 {
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 05/16] arm: at91: at91sam9x5: fix gpio number per bank
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (2 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 04/16] at91: regroup gpio and pinctrl under the same ranges Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 06/16] ARM: at91: add dummies pinctrl for non dt platform Jean-Christophe PLAGNIOL-VILLARD
` (10 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
On the at91sam9x5 SoC series, GPIO banks B and D only have 19 and 22
pins. So add a property to set this parameter.
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
.../devicetree/bindings/gpio/gpio_atmel.txt | 5 +++
arch/arm/boot/dts/at91sam9x5.dtsi | 2 ++
arch/arm/mach-at91/gpio.c | 33 +++++++++++++-------
3 files changed, 29 insertions(+), 11 deletions(-)
diff --git a/Documentation/devicetree/bindings/gpio/gpio_atmel.txt b/Documentation/devicetree/bindings/gpio/gpio_atmel.txt
index 66efc80..85f8c0d 100644
--- a/Documentation/devicetree/bindings/gpio/gpio_atmel.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio_atmel.txt
@@ -9,6 +9,10 @@ Required properties:
unused).
- gpio-controller: Marks the device node as a GPIO controller.
+optional properties:
+- #gpio-lines: Number of gpio if absent 32.
+
+
Example:
pioA: gpio at fffff200 {
compatible = "atmel,at91rm9200-gpio";
@@ -16,5 +20,6 @@ Example:
interrupts = <2 4>;
#gpio-cells = <2>;
gpio-controller;
+ #gpio-lines = <19>;
};
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index bc6cd3f..b3efecb 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -130,6 +130,7 @@
interrupts = <2 4 1>;
#gpio-cells = <2>;
gpio-controller;
+ #gpio-lines = <19>;
interrupt-controller;
#interrupt-cells = <2>;
};
@@ -150,6 +151,7 @@
interrupts = <3 4 1>;
#gpio-cells = <2>;
gpio-controller;
+ #gpio-lines = <22>;
interrupt-controller;
#interrupt-cells = <2>;
};
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index 3b8f463..a34f0ed 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -33,6 +33,8 @@
#include "generic.h"
+#define MAX_NB_GPIO_PER_BANK 32
+
struct at91_gpio_chip {
struct gpio_chip chip;
struct at91_gpio_chip *next; /* Bank sharing same clock */
@@ -56,7 +58,7 @@ static int at91_gpiolib_direction_input(struct gpio_chip *chip,
unsigned offset);
static int at91_gpiolib_to_irq(struct gpio_chip *chip, unsigned offset);
-#define AT91_GPIO_CHIP(name, nr_gpio) \
+#define AT91_GPIO_CHIP(name) \
{ \
.chip = { \
.label = name, \
@@ -67,16 +69,16 @@ static int at91_gpiolib_to_irq(struct gpio_chip *chip, unsigned offset);
.set = at91_gpiolib_set, \
.dbg_show = at91_gpiolib_dbg_show, \
.to_irq = at91_gpiolib_to_irq, \
- .ngpio = nr_gpio, \
+ .ngpio = MAX_NB_GPIO_PER_BANK, \
}, \
}
static struct at91_gpio_chip gpio_chip[] = {
- AT91_GPIO_CHIP("pioA", 32),
- AT91_GPIO_CHIP("pioB", 32),
- AT91_GPIO_CHIP("pioC", 32),
- AT91_GPIO_CHIP("pioD", 32),
- AT91_GPIO_CHIP("pioE", 32),
+ AT91_GPIO_CHIP("pioA"),
+ AT91_GPIO_CHIP("pioB"),
+ AT91_GPIO_CHIP("pioC"),
+ AT91_GPIO_CHIP("pioD"),
+ AT91_GPIO_CHIP("pioE"),
};
static int gpio_banks;
@@ -91,7 +93,7 @@ static unsigned long at91_gpio_caps;
static inline void __iomem *pin_to_controller(unsigned pin)
{
- pin /= 32;
+ pin /= MAX_NB_GPIO_PER_BANK;
if (likely(pin < gpio_banks))
return gpio_chip[pin].regbase;
@@ -100,7 +102,7 @@ static inline void __iomem *pin_to_controller(unsigned pin)
static inline unsigned pin_to_mask(unsigned pin)
{
- return 1 << (pin % 32);
+ return 1 << (pin % MAX_NB_GPIO_PER_BANK);
}
@@ -992,6 +994,7 @@ static void __init of_at91_gpio_init_one(struct device_node *np)
{
int alias_idx;
struct at91_gpio_chip *at91_gpio;
+ uint32_t ngpio;
if (!np)
return;
@@ -1004,7 +1007,7 @@ static void __init of_at91_gpio_init_one(struct device_node *np)
}
at91_gpio = &gpio_chip[alias_idx];
- at91_gpio->chip.base = alias_idx * at91_gpio->chip.ngpio;
+ at91_gpio->chip.base = alias_idx * MAX_NB_GPIO_PER_BANK;
at91_gpio->regbase = of_iomap(np, 0);
if (!at91_gpio->regbase) {
@@ -1024,6 +1027,14 @@ static void __init of_at91_gpio_init_one(struct device_node *np)
if (of_device_is_compatible(np, "atmel,at91sam9x5-gpio"))
at91_gpio_caps |= AT91_GPIO_CAP_PIO3;
+ if (!of_property_read_u32(np, "#gpio-lines", &ngpio)) {
+ if (ngpio >= MAX_NB_GPIO_PER_BANK)
+ pr_err("at91_gpio.%d, gpio-nb >= %d failback to %d\n",
+ alias_idx, MAX_NB_GPIO_PER_BANK, MAX_NB_GPIO_PER_BANK);
+ else
+ at91_gpio->chip.ngpio = ngpio;
+ }
+
/* Setup clock */
if (at91_gpio_setup_clk(alias_idx))
goto ioremap_err;
@@ -1061,7 +1072,7 @@ static void __init at91_gpio_init_one(int idx, u32 regbase, int pioc_hwirq)
{
struct at91_gpio_chip *at91_gpio = &gpio_chip[idx];
- at91_gpio->chip.base = idx * at91_gpio->chip.ngpio;
+ at91_gpio->chip.base = idx * MAX_NB_GPIO_PER_BANK;
at91_gpio->pioc_hwirq = pioc_hwirq;
at91_gpio->pioc_idx = idx;
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 06/16] ARM: at91: add dummies pinctrl for non dt platform
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (3 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 05/16] arm: at91: at91sam9x5: fix gpio number per bank Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 07/16] ARM: at91: add pinctrl support Jean-Christophe PLAGNIOL-VILLARD
` (9 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/mach-at91/setup.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 944bffb..50c69b5 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -10,6 +10,7 @@
#include <linux/mm.h>
#include <linux/pm.h>
#include <linux/of_address.h>
+#include <linux/pinctrl/machine.h>
#include <asm/system_misc.h>
#include <asm/mach/map.h>
@@ -463,4 +464,6 @@ void __init at91_initialize(unsigned long main_clock)
at91_boot_soc.register_clocks();
at91_boot_soc.init();
+
+ pinctrl_provide_dummies();
}
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 07/16] ARM: at91: add pinctrl support
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (4 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 06/16] ARM: at91: add dummies pinctrl for non dt platform Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-25 14:59 ` Nicolas Ferre
2012-09-17 15:27 ` [PATCH 08/16] arm: at91: dt: at91sam9 " Jean-Christophe PLAGNIOL-VILLARD
` (8 subsequent siblings)
14 siblings, 1 reply; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
This is also include the gpio controller as the IP share both.
Each soc will have to describe the SoC limitation and pin configuration via
DT.
This will allow to do not need to touch the C code when adding new SoC if the
IP version is supported.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
.../bindings/pinctrl/atmel,at91-pinctrl.txt | 84 ++
arch/arm/Kconfig | 2 +
arch/arm/mach-at91/board-dt.c | 2 -
arch/arm/mach-at91/gpio.c | 165 +--
drivers/pinctrl/Kconfig | 9 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/pinctrl-at91.c | 1490 ++++++++++++++++++++
7 files changed, 1591 insertions(+), 162 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt
create mode 100644 drivers/pinctrl/pinctrl-at91.c
diff --git a/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt
new file mode 100644
index 0000000..0296ef4
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt
@@ -0,0 +1,84 @@
+* Atmel AT91 Pinmux Controller
+
+The AT91 Pinmux Controler, enables the IC
+to share one PAD to several functional blocks. The sharing is done by
+multiplexing the PAD input/output signals. For each PAD there are up to
+8 muxing options (called periph modes). Since different modules require
+different PAD settings (like pull up, keeper, etc) the contoller controls
+also the PAD settings parameters.
+
+Please refer to pinctrl-bindings.txt in this directory for details of the
+common pinctrl bindings used by client devices, including the meaning of the
+phrase "pin configuration node".
+
+Atmel AT91 pin configuration node is a node of a group of pins which can be
+used for a specific device or function. This node represents both mux and config
+of the pins in that group. The 'pins' selects the function mode(also named pin
+mode) this pin can work on and the 'config' configures various pad settings
+such as pull-up, multi drive, etc.
+
+Required properties for iomux controller:
+- compatible: "atmel,at91rm9200-pinctrl"
+- atmel,mux-mask: array of mask (periph per bank) to describe if a pin can be
+ configured in this periph mode. All the periph and bank need to be describe.
+
+Required properties for pin configuration node:
+- atmel,pins: 4 integers array, represents a group of pins mux and config
+ setting. The format is atmel,pins = <PIN_BANK PIN_BANK_NUM PERIPH CONFIG>.
+ The PERIPH 0 means gpio.
+
+Bits used for CONFIG:
+PULL_UP(1 << 0): indicate this pin need a pull up.
+MULTIDRIVE(1 << 1): indicate this pin need to be configured as multidrive.
+
+NOTE:
+Some requirements for using atmel,at91rm9200-pinctrl binding:
+1. We have pin function node defined under at91 controller node to represent
+ what pinmux functions this SoC supports.
+2. The pin configuration node intends to work on a specific function should
+ to be defined under that specific function node.
+ The function node's name should represent well about what function
+ this group of pins in this pin configuration node are working on.
+3. The driver can use the function node's name and pin configuration node's
+ name describe the pin function and group hierarchy.
+ For example, Linux Iat91 pinctrl driver takes the function node's name
+ as the function name and pin configuration node's name as group name to
+ create the map table.
+4. Each pin configuration node should have a phandle, devices can set pins
+ configurations by referring to the phandle of that pin configuration node.
+5. The gpio controller must be describe in the pinctrl simple-bus.
+
+Examples:
+
+pinctrl@fffff400 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+ compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
+ reg = <0xfffff400 0x600>;
+
+ atmel,mux-mask = <
+ /* A B */
+ 0xffffffff 0xffc00c3b /* pioA */
+ 0xffffffff 0x7fff3ccf /* pioB */
+ 0xffffffff 0x007fffff /* pioC */
+ >;
+
+ /* shared pinctrl settings */
+ dbgu {
+ pinctrl_dbgu: dbgu-0 {
+ atmel,pins =
+ <1 14 0x1 0x0 /* PB14 periph A */
+ 1 15 0x1 0x1>; /* PB15 periph with pullup */
+ };
+ };
+};
+
+dbgu: serial at fffff200 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0xfffff200 0x200>;
+ interrupts = <1 4 7>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_dbgu>;
+ status = "disabled";
+};
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6d6e18f..4e49e28 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -346,6 +346,8 @@ config ARCH_AT91
select CLKDEV_LOOKUP
select IRQ_DOMAIN
select NEED_MACH_IO_H if PCCARD
+ select PINCTRL
+ select PINCTRL_AT91 if USE_OF
help
This enables support for systems based on Atmel
AT91RM9200 and AT91SAM9* processors.
diff --git a/arch/arm/mach-at91/board-dt.c b/arch/arm/mach-at91/board-dt.c
index e8f45c4..3b6a948 100644
--- a/arch/arm/mach-at91/board-dt.c
+++ b/arch/arm/mach-at91/board-dt.c
@@ -30,8 +30,6 @@
static const struct of_device_id irq_of_match[] __initconst = {
{ .compatible = "atmel,at91rm9200-aic", .data = at91_aic_of_init },
- { .compatible = "atmel,at91rm9200-gpio", .data = at91_gpio_of_irq_setup },
- { .compatible = "atmel,at91sam9x5-gpio", .data = at91_gpio_of_irq_setup },
{ /*sentinel*/ }
};
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index a34f0ed..c5d7e1e 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -23,8 +23,6 @@
#include <linux/io.h>
#include <linux/irqdomain.h>
#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/of_gpio.h>
#include <asm/mach/irq.h>
@@ -717,80 +715,6 @@ postcore_initcall(at91_gpio_debugfs_init);
*/
static struct lock_class_key gpio_lock_class;
-#if defined(CONFIG_OF)
-static int at91_gpio_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- struct at91_gpio_chip *at91_gpio = h->host_data;
-
- irq_set_lockdep_class(virq, &gpio_lock_class);
-
- /*
- * Can use the "simple" and not "edge" handler since it's
- * shorter, and the AIC handles interrupts sanely.
- */
- irq_set_chip_and_handler(virq, &gpio_irqchip,
- handle_simple_irq);
- set_irq_flags(virq, IRQF_VALID);
- irq_set_chip_data(virq, at91_gpio);
-
- return 0;
-}
-
-static struct irq_domain_ops at91_gpio_ops = {
- .map = at91_gpio_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-int __init at91_gpio_of_irq_setup(struct device_node *node,
- struct device_node *parent)
-{
- struct at91_gpio_chip *prev = NULL;
- int alias_idx = of_alias_get_id(node, "gpio");
- struct at91_gpio_chip *at91_gpio = &gpio_chip[alias_idx];
-
- /* Setup proper .irq_set_type function */
- if (has_pio3())
- gpio_irqchip.irq_set_type = alt_gpio_irq_type;
- else
- gpio_irqchip.irq_set_type = gpio_irq_type;
-
- /* Disable irqs of this PIO controller */
- __raw_writel(~0, at91_gpio->regbase + PIO_IDR);
-
- /* Setup irq domain */
- at91_gpio->domain = irq_domain_add_linear(node, at91_gpio->chip.ngpio,
- &at91_gpio_ops, at91_gpio);
- if (!at91_gpio->domain)
- panic("at91_gpio.%d: couldn't allocate irq domain (DT).\n",
- at91_gpio->pioc_idx);
-
- /* Setup chained handler */
- if (at91_gpio->pioc_idx)
- prev = &gpio_chip[at91_gpio->pioc_idx - 1];
-
- /* The toplevel handler handles one bank of GPIOs, except
- * on some SoC it can handles up to three...
- * We only set up the handler for the first of the list.
- */
- if (prev && prev->next == at91_gpio)
- return 0;
-
- at91_gpio->pioc_virq = irq_create_mapping(irq_find_host(parent),
- at91_gpio->pioc_hwirq);
- irq_set_chip_data(at91_gpio->pioc_virq, at91_gpio);
- irq_set_chained_handler(at91_gpio->pioc_virq, gpio_irq_handler);
-
- return 0;
-}
-#else
-int __init at91_gpio_of_irq_setup(struct device_node *node,
- struct device_node *parent)
-{
- return -EINVAL;
-}
-#endif
-
/*
* irqdomain initialization: pile up irqdomains on top of AIC range
*/
@@ -989,85 +913,6 @@ err:
return -EINVAL;
}
-#ifdef CONFIG_OF_GPIO
-static void __init of_at91_gpio_init_one(struct device_node *np)
-{
- int alias_idx;
- struct at91_gpio_chip *at91_gpio;
- uint32_t ngpio;
-
- if (!np)
- return;
-
- alias_idx = of_alias_get_id(np, "gpio");
- if (alias_idx >= MAX_GPIO_BANKS) {
- pr_err("at91_gpio, failed alias idx(%d) > MAX_GPIO_BANKS(%d), ignoring.\n",
- alias_idx, MAX_GPIO_BANKS);
- return;
- }
-
- at91_gpio = &gpio_chip[alias_idx];
- at91_gpio->chip.base = alias_idx * MAX_NB_GPIO_PER_BANK;
-
- at91_gpio->regbase = of_iomap(np, 0);
- if (!at91_gpio->regbase) {
- pr_err("at91_gpio.%d, failed to map registers, ignoring.\n",
- alias_idx);
- return;
- }
-
- /* Get the interrupts property */
- if (of_property_read_u32(np, "interrupts", &at91_gpio->pioc_hwirq)) {
- pr_err("at91_gpio.%d, failed to get interrupts property, ignoring.\n",
- alias_idx);
- goto ioremap_err;
- }
-
- /* Get capabilities from compatibility property */
- if (of_device_is_compatible(np, "atmel,at91sam9x5-gpio"))
- at91_gpio_caps |= AT91_GPIO_CAP_PIO3;
-
- if (!of_property_read_u32(np, "#gpio-lines", &ngpio)) {
- if (ngpio >= MAX_NB_GPIO_PER_BANK)
- pr_err("at91_gpio.%d, gpio-nb >= %d failback to %d\n",
- alias_idx, MAX_NB_GPIO_PER_BANK, MAX_NB_GPIO_PER_BANK);
- else
- at91_gpio->chip.ngpio = ngpio;
- }
-
- /* Setup clock */
- if (at91_gpio_setup_clk(alias_idx))
- goto ioremap_err;
-
- at91_gpio->chip.of_node = np;
- gpio_banks = max(gpio_banks, alias_idx + 1);
- at91_gpio->pioc_idx = alias_idx;
- return;
-
-ioremap_err:
- iounmap(at91_gpio->regbase);
-}
-
-static int __init of_at91_gpio_init(void)
-{
- struct device_node *np = NULL;
-
- /*
- * This isn't ideal, but it gets things hooked up until this
- * driver is converted into a platform_device
- */
- for_each_compatible_node(np, NULL, "atmel,at91rm9200-gpio")
- of_at91_gpio_init_one(np);
-
- return gpio_banks > 0 ? 0 : -EINVAL;
-}
-#else
-static int __init of_at91_gpio_init(void)
-{
- return -EINVAL;
-}
-#endif
-
static void __init at91_gpio_init_one(int idx, u32 regbase, int pioc_hwirq)
{
struct at91_gpio_chip *at91_gpio = &gpio_chip[idx];
@@ -1102,11 +947,11 @@ void __init at91_gpio_init(struct at91_gpio_bank *data, int nr_banks)
BUG_ON(nr_banks > MAX_GPIO_BANKS);
- if (of_at91_gpio_init() < 0) {
- /* No GPIO controller found in device tree */
- for (i = 0; i < nr_banks; i++)
- at91_gpio_init_one(i, data[i].regbase, data[i].id);
- }
+ if (of_have_populated_dt())
+ return;
+
+ for (i = 0; i < nr_banks; i++)
+ at91_gpio_init_one(i, data[i].regbase, data[i].id);
for (i = 0; i < gpio_banks; i++) {
at91_gpio = &gpio_chip[i];
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 54e3588..953932a 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -26,6 +26,15 @@ config DEBUG_PINCTRL
help
Say Y here to add some extra checks and diagnostics to PINCTRL calls.
+config PINCTRL_AT91
+ bool "AT91 pinctrl driver"
+ depends on OF
+ depends on ARCH_AT91
+ select PINMUX
+ select PINCONF
+ help
+ Say Y here to enable the at91 pinctrl driver
+
config PINCTRL_IMX
bool
select PINMUX
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index f40b1f8..d3fda00 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -9,6 +9,7 @@ ifeq ($(CONFIG_OF),y)
obj-$(CONFIG_PINCTRL) += devicetree.o
endif
obj-$(CONFIG_GENERIC_PINCONF) += pinconf-generic.o
+obj-$(CONFIG_PINCTRL_AT91) += pinctrl-at91.o
obj-$(CONFIG_PINCTRL_IMX) += pinctrl-imx.o
obj-$(CONFIG_PINCTRL_IMX51) += pinctrl-imx51.o
obj-$(CONFIG_PINCTRL_IMX53) += pinctrl-imx53.o
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
new file mode 100644
index 0000000..e4712d1
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -0,0 +1,1490 @@
+/*
+ * at91 pinctrl driver based on at91 pinmux core
+ *
+ * Copyright (C) 2011-2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Under GPLv2 only
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/irqdomain.h>
+#include <linux/pinctrl/machine.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+/* Since we request GPIOs from ourself */
+#include <linux/pinctrl/consumer.h>
+
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/at91_pio.h>
+
+#include "core.h"
+
+#define MAX_NB_GPIO_PER_BANK 32
+
+struct at91_pinctrl_mux_ops;
+
+struct at91_gpio_chip {
+ struct gpio_chip chip;
+ struct pinctrl_gpio_range range;
+ struct at91_gpio_chip *next; /* Bank sharing same clock */
+ int pioc_hwirq; /* PIO bank interrupt identifier on AIC */
+ int pioc_virq; /* PIO bank Linux virtual interrupt */
+ int pioc_idx; /* PIO bank index */
+ void __iomem *regbase; /* PIO bank virtual address */
+ struct clk *clock; /* associated clock */
+ struct irq_domain *domain; /* associated irq domain */
+ struct at91_pinctrl_mux_ops *ops; /* ops */
+};
+
+#define to_at91_gpio_chip(c) container_of(c, struct at91_gpio_chip, chip)
+
+static struct at91_gpio_chip *gpio_chips[MAX_GPIO_BANKS];
+
+static int gpio_banks;
+
+#define PULL_UP (0 << 1)
+#define MULTI_DRIVE (1 << 1)
+
+/**
+ * struct at91_pmx_func - describes AT91 pinmux functions
+ * @name: the name of this specific function
+ * @groups: corresponding pin groups
+ * @ngroups: the number of groups
+ */
+struct at91_pmx_func {
+ const char *name;
+ const char **groups;
+ unsigned ngroups;
+};
+
+enum at91_mux {
+ AT91_MUX_GPIO = 0,
+ AT91_MUX_PERIPH_A = 1,
+ AT91_MUX_PERIPH_B = 2,
+ AT91_MUX_PERIPH_C = 3,
+ AT91_MUX_PERIPH_D = 4,
+};
+
+/**
+ * struct at91_pmx_pin - describes an At91 pin mux
+ * @bank: the bank of the pin
+ * @pin: the pin number in the @bank
+ * @mux: the mux mode : gpio or periph_x of the pin i.e. alternate function.
+ * @conf: the configuration of the pin: PULL_UP, MULTIDRIVE etc...
+ */
+struct at91_pmx_pin {
+ uint32_t bank;
+ uint32_t pin;
+ enum at91_mux mux;
+ unsigned long conf;
+};
+
+/**
+ * struct at91_pin_group - describes an At91 pin group
+ * @name: the name of this specific pin group
+ * @pins_conf: the mux mode for each pin in this group. The size of this
+ * array is the same as pins.
+ * @pins: an array of discrete physical pins used in this group, taken
+ * from the driver-local pin enumeration space
+ * @npins: the number of pins in this group array, i.e. the number of
+ * elements in .pins so we can iterate over that array
+ */
+struct at91_pin_group {
+ const char *name;
+ struct at91_pmx_pin *pins_conf;
+ unsigned int *pins;
+ unsigned npins;
+};
+
+/**
+ * struct at91_pinctrl_mux_ops - describes an At91 mux ops group
+ * on new IP with support for periph C and D the way to mux in
+ * periph A and B has changed
+ * So provide the right call back
+ * if not present means the IP does not support it
+ * @get_periph: return the periph mode configured
+ * @mux_A_periph: mux as periph A
+ * @mux_B_periph: mux as periph B
+ * @mux_C_periph: mux as periph C
+ * @mux_D_periph: mux as periph D
+ * @irq_type: return irq type
+ */
+struct at91_pinctrl_mux_ops {
+ enum at91_mux (*get_periph)(void __iomem *pio, unsigned mask);
+ void (*mux_A_periph)(void __iomem *pio, unsigned mask);
+ void (*mux_B_periph)(void __iomem *pio, unsigned mask);
+ void (*mux_C_periph)(void __iomem *pio, unsigned mask);
+ void (*mux_D_periph)(void __iomem *pio, unsigned mask);
+ /* irq */
+ int (*irq_type)(struct irq_data *d, unsigned type);
+};
+
+static int gpio_irq_type(struct irq_data *d, unsigned type);
+static int alt_gpio_irq_type(struct irq_data *d, unsigned type);
+
+struct at91_pinctrl {
+ struct device *dev;
+ struct pinctrl_dev *pctl;
+
+ int nbanks;
+
+ uint32_t *mux_mask;
+ int nmux;
+
+ struct at91_pmx_func *functions;
+ int nfunctions;
+
+ struct at91_pin_group *groups;
+ int ngroups;
+
+ struct at91_pinctrl_mux_ops *ops;
+};
+
+static const inline struct at91_pin_group *at91_pinctrl_find_group_by_name(
+ const struct at91_pinctrl *info,
+ const char *name)
+{
+ const struct at91_pin_group *grp = NULL;
+ int i;
+
+ for (i = 0; i < info->ngroups; i++) {
+ if (strcmp(info->groups[i].name, name))
+ continue;
+
+ grp = &info->groups[i];
+ dev_dbg(info->dev, "%s: %d 0:%d\n", name, grp->npins, grp->pins[0]);
+ break;
+ }
+
+ return grp;
+}
+
+static int at91_get_groups_count(struct pinctrl_dev *pctldev)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+
+ return info->ngroups;
+}
+
+static const char *at91_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned selector)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+
+ return info->groups[selector].name;
+}
+
+static int at91_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector,
+ const unsigned **pins,
+ unsigned *npins)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+
+ if (selector >= info->ngroups)
+ return -EINVAL;
+
+ *pins = info->groups[selector].pins;
+ *npins = info->groups[selector].npins;
+
+ return 0;
+}
+
+static void at91_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
+ unsigned offset)
+{
+ seq_printf(s, "%s", dev_name(pctldev->dev));
+}
+
+static int at91_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np,
+ struct pinctrl_map **map, unsigned *num_maps)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+ const struct at91_pin_group *grp;
+ struct pinctrl_map *new_map;
+ struct device_node *parent;
+ int map_num = 1;
+ int i;
+ struct at91_pmx_pin *pin;
+
+ /*
+ * first find the group of this node and check if we need create
+ * config maps for pins
+ */
+ grp = at91_pinctrl_find_group_by_name(info, np->name);
+ if (!grp) {
+ dev_err(info->dev, "unable to find group for node %s\n",
+ np->name);
+ return -EINVAL;
+ }
+
+ map_num += grp->npins;
+ new_map = devm_kzalloc(pctldev->dev, sizeof(*new_map) * map_num, GFP_KERNEL);
+ if (!new_map)
+ return -ENOMEM;
+
+ *map = new_map;
+ *num_maps = map_num;
+
+ /* create mux map */
+ parent = of_get_parent(np);
+ if (!parent) {
+ kfree(new_map);
+ return -EINVAL;
+ }
+ new_map[0].type = PIN_MAP_TYPE_MUX_GROUP;
+ new_map[0].data.mux.function = parent->name;
+ new_map[0].data.mux.group = np->name;
+ of_node_put(parent);
+
+ /* create config map */
+ new_map++;
+ for (i = 0; i < grp->npins; i++) {
+ pin = &grp->pins_conf[i];
+
+ new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN;
+ new_map[i].data.configs.group_or_pin =
+ pin_get_name(pctldev, grp->pins[i]);
+ new_map[i].data.configs.configs = &grp->pins_conf[i].conf;
+ new_map[i].data.configs.num_configs = 1;
+ }
+
+ dev_dbg(pctldev->dev, "maps: function %s group %s num %d\n",
+ (*map)->data.mux.function, (*map)->data.mux.group, map_num);
+
+ return 0;
+}
+
+static void at91_dt_free_map(struct pinctrl_dev *pctldev,
+ struct pinctrl_map *map, unsigned num_maps)
+{
+}
+
+static struct pinctrl_ops at91_pctrl_ops = {
+ .get_groups_count = at91_get_groups_count,
+ .get_group_name = at91_get_group_name,
+ .get_group_pins = at91_get_group_pins,
+ .pin_dbg_show = at91_pin_dbg_show,
+ .dt_node_to_map = at91_dt_node_to_map,
+ .dt_free_map = at91_dt_free_map,
+};
+
+static void __iomem * pin_to_controller(struct at91_pinctrl *info,
+ unsigned int bank)
+{
+ return gpio_chips[bank]->regbase;
+}
+
+static inline int pin_to_bank(unsigned pin)
+{
+ return pin /= MAX_NB_GPIO_PER_BANK;
+}
+
+static unsigned pin_to_mask(unsigned int pin)
+{
+ return 1 << pin;
+}
+
+static void at91_mux_disable_interrupt(void __iomem *pio, unsigned mask)
+{
+ writel_relaxed(mask, pio + PIO_IDR);
+}
+
+static unsigned at91_mux_get_pullup(void __iomem *pio, unsigned pin)
+{
+ return (readl_relaxed(pio + PIO_PUSR) >> pin) & 0x1;
+}
+
+static void at91_mux_set_pullup(void __iomem *pio, unsigned mask, bool on)
+{
+ writel_relaxed(mask, pio + (on ? PIO_PUER : PIO_PUDR));
+}
+
+static unsigned at91_mux_get_multidrive(void __iomem *pio, unsigned pin)
+{
+ return (readl_relaxed(pio + PIO_MDSR) >> pin) & 0x1;
+}
+
+static void at91_mux_set_multidrive(void __iomem *pio, unsigned mask, bool on)
+{
+ writel_relaxed(mask, pio + (on ? PIO_MDER : PIO_MDDR));
+}
+
+static void at91_mux_set_A_periph(void __iomem *pio, unsigned mask)
+{
+ writel_relaxed(mask, pio + PIO_ASR);
+}
+
+static void at91_mux_set_B_periph(void __iomem *pio, unsigned mask)
+{
+ writel_relaxed(mask, pio + PIO_BSR);
+}
+
+static void at91_mux_pio3_set_A_periph(void __iomem *pio, unsigned mask)
+{
+
+ writel_relaxed(readl_relaxed(pio + PIO_ABCDSR1) & ~mask,
+ pio + PIO_ABCDSR1);
+ writel_relaxed(readl_relaxed(pio + PIO_ABCDSR2) & ~mask,
+ pio + PIO_ABCDSR2);
+}
+
+static void at91_mux_pio3_set_B_periph(void __iomem *pio, unsigned mask)
+{
+ writel_relaxed(readl_relaxed(pio + PIO_ABCDSR1) | mask,
+ pio + PIO_ABCDSR1);
+ writel_relaxed(readl_relaxed(pio + PIO_ABCDSR2) & ~mask,
+ pio + PIO_ABCDSR2);
+}
+
+static void at91_mux_pio3_set_C_periph(void __iomem *pio, unsigned mask)
+{
+ writel_relaxed(readl_relaxed(pio + PIO_ABCDSR1) & ~mask, pio + PIO_ABCDSR1);
+ writel_relaxed(readl_relaxed(pio + PIO_ABCDSR2) | mask, pio + PIO_ABCDSR2);
+}
+
+static void at91_mux_pio3_set_D_periph(void __iomem *pio, unsigned mask)
+{
+ writel_relaxed(readl_relaxed(pio + PIO_ABCDSR1) | mask, pio + PIO_ABCDSR1);
+ writel_relaxed(readl_relaxed(pio + PIO_ABCDSR2) | mask, pio + PIO_ABCDSR2);
+}
+
+static enum at91_mux at91_mux_pio3_get_periph(void __iomem *pio, unsigned mask)
+{
+ unsigned select;
+
+ if (readl_relaxed(pio + PIO_PSR) & mask)
+ return AT91_MUX_GPIO;
+
+ select = !!(readl_relaxed(pio + PIO_ABCDSR1) & mask);
+ select |= (!!(readl_relaxed(pio + PIO_ABCDSR2) & mask) << 1);
+
+ return select + 1;
+}
+
+static enum at91_mux at91_mux_get_periph(void __iomem *pio, unsigned mask)
+{
+ unsigned select;
+
+ if (readl_relaxed(pio + PIO_PSR) & mask)
+ return AT91_MUX_GPIO;
+
+ select = readl_relaxed(pio + PIO_ABSR) & mask;
+
+ return select + 1;
+}
+
+static struct at91_pinctrl_mux_ops at91rm9200_ops = {
+ .get_periph = at91_mux_get_periph,
+ .mux_A_periph = at91_mux_set_A_periph,
+ .mux_B_periph = at91_mux_set_B_periph,
+ .irq_type = gpio_irq_type,
+};
+
+static struct at91_pinctrl_mux_ops at91sam9x5_ops = {
+ .get_periph = at91_mux_pio3_get_periph,
+ .mux_A_periph = at91_mux_pio3_set_A_periph,
+ .mux_B_periph = at91_mux_pio3_set_B_periph,
+ .mux_C_periph = at91_mux_pio3_set_C_periph,
+ .mux_D_periph = at91_mux_pio3_set_D_periph,
+ .irq_type = alt_gpio_irq_type,
+};
+
+static void at91_pin_dbg(const struct device *dev, const struct at91_pmx_pin *pin)
+{
+ if (pin->mux) {
+ dev_dbg(dev, "pio%c%d configured as periph%c with conf = 0x%lu\n",
+ pin->bank + 'A', pin->pin, pin->mux - 1 + 'A', pin->conf);
+ } else {
+ dev_dbg(dev, "pio%c%d configured as gpio with conf = 0x%lu\n",
+ pin->bank + 'A', pin->pin, pin->conf);
+ }
+}
+
+static int pin_check_config(struct at91_pinctrl *info, const char* name,
+ int index, const struct at91_pmx_pin *pin)
+{
+ int mux;
+
+ /* check if it's a valid config */
+ if (pin->bank >= info->nbanks) {
+ dev_err(info->dev, "%s: pin conf %d bank_id %d >= nbanks %d\n",
+ name, index, pin->bank, info->nbanks);
+ return -EINVAL;
+ }
+
+ if (pin->pin >= MAX_NB_GPIO_PER_BANK) {
+ dev_err(info->dev, "%s: pin conf %d pin_bank_id %d >= %d\n",
+ name, index, pin->pin, MAX_NB_GPIO_PER_BANK);
+ return -EINVAL;
+ }
+
+ if (!pin->mux)
+ return 0;
+
+ mux = pin->mux - 1;
+
+ if (mux >= info->nmux) {
+ dev_err(info->dev, "%s: pin conf %d mux_id %d >= nmux %d\n",
+ name, index, mux, info->nmux);
+ return -EINVAL;
+ }
+
+ if (!(info->mux_mask[pin->bank * info->nmux + mux] & 1 << pin->pin)) {
+ dev_err(info->dev, "%s: pin conf %d mux_id %d not supported for pio%c%d\n",
+ name, index, mux, pin->bank + 'A', pin->pin);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void at91_mux_gpio_disable(void __iomem *pio, unsigned mask)
+{
+ writel_relaxed(mask, pio + PIO_PDR);
+}
+
+static void at91_mux_gpio_enable(void __iomem *pio, unsigned mask, bool input)
+{
+ writel_relaxed(mask, pio + PIO_PER);
+ writel_relaxed(mask, pio + (input ? PIO_ODR : PIO_OER));
+}
+
+static int at91_pmx_enable(struct pinctrl_dev *pctldev, unsigned selector,
+ unsigned group)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+ const struct at91_pmx_pin *pins_conf = info->groups[group].pins_conf;
+ const struct at91_pmx_pin *pin;
+ uint32_t npins = info->groups[group].npins;
+ int i, ret;
+ unsigned mask;
+ void __iomem *pio;
+
+ dev_dbg(info->dev, "enable function %s group %s\n",
+ info->functions[selector].name, info->groups[group].name);
+
+ /* first check that all the pins of the group are valid with a valid
+ * paramter */
+ for (i = 0; i < npins; i++) {
+ pin = &pins_conf[i];
+ ret = pin_check_config(info, info->groups[group].name, i, pin);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0; i < npins; i++) {
+ pin = &pins_conf[i];
+ at91_pin_dbg(info->dev, pin);
+ pio = pin_to_controller(info, pin->bank);
+ mask = pin_to_mask(pin->pin);
+ at91_mux_disable_interrupt(pio, mask);
+ switch(pin->mux) {
+ case AT91_MUX_GPIO:
+ at91_mux_gpio_enable(pio, mask, 1);
+ break;
+ case AT91_MUX_PERIPH_A:
+ info->ops->mux_A_periph(pio, mask);
+ break;
+ case AT91_MUX_PERIPH_B:
+ info->ops->mux_B_periph(pio, mask);
+ break;
+ case AT91_MUX_PERIPH_C:
+ if (!info->ops->mux_C_periph)
+ return -EINVAL;
+ info->ops->mux_C_periph(pio, mask);
+ break;
+ case AT91_MUX_PERIPH_D:
+ if (!info->ops->mux_D_periph)
+ return -EINVAL;
+ info->ops->mux_D_periph(pio, mask);
+ break;
+ }
+ if (pin->mux)
+ at91_mux_gpio_disable(pio, mask);
+ }
+
+ return 0;
+}
+
+static void at91_pmx_disable(struct pinctrl_dev *pctldev, unsigned selector,
+ unsigned group)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+ const struct at91_pmx_pin *pins_conf = info->groups[group].pins_conf;
+ const struct at91_pmx_pin *pin;
+ uint32_t npins = info->groups[group].npins;
+ int i;
+ unsigned mask;
+ void __iomem *pio;
+
+ for (i = 0; i < npins; i++) {
+ pin = &pins_conf[i];
+ at91_pin_dbg(info->dev, pin);
+ pio = pin_to_controller(info, pin->bank);
+ mask = pin_to_mask(pin->pin);
+ at91_mux_gpio_enable(pio, mask, 1);
+ }
+}
+
+static int at91_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+
+ return info->nfunctions;
+}
+
+static const char *at91_pmx_get_func_name(struct pinctrl_dev *pctldev,
+ unsigned selector)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+
+ return info->functions[selector].name;
+}
+
+static int at91_pmx_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
+ const char * const **groups,
+ unsigned * const num_groups)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+
+ *groups = info->functions[selector].groups;
+ *num_groups = info->functions[selector].ngroups;
+
+ return 0;
+}
+
+int at91_gpio_request_enable(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned offset)
+{
+ struct at91_pinctrl *npct = pinctrl_dev_get_drvdata(pctldev);
+ struct at91_gpio_chip *at91_chip;
+ struct gpio_chip *chip;
+ unsigned mask;
+
+ if (!range) {
+ dev_err(npct->dev, "invalid range\n");
+ return -EINVAL;
+ }
+ if (!range->gc) {
+ dev_err(npct->dev, "missing GPIO chip in range\n");
+ return -EINVAL;
+ }
+ chip = range->gc;
+ at91_chip = container_of(chip, struct at91_gpio_chip, chip);
+
+ dev_dbg(npct->dev, "enable pin %u as GPIO\n", offset);
+
+ mask = 1 << (offset - chip->base);
+
+ dev_dbg(npct->dev, "enable pin %u as PIO%c%d 0x%x\n",
+ offset, 'A' + range->id, offset - chip->base, mask);
+
+ writel_relaxed(mask, at91_chip->regbase + PIO_PER);
+
+ return 0;
+}
+
+void at91_gpio_disable_free(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned offset)
+{
+ struct at91_pinctrl *npct = pinctrl_dev_get_drvdata(pctldev);
+
+ dev_dbg(npct->dev, "disable pin %u as GPIO\n", offset);
+ /* Set the pin to some default state, GPIO is usually default */
+}
+
+static struct pinmux_ops at91_pmx_ops = {
+ .get_functions_count = at91_pmx_get_funcs_count,
+ .get_function_name = at91_pmx_get_func_name,
+ .get_function_groups = at91_pmx_get_groups,
+ .enable = at91_pmx_enable,
+ .disable = at91_pmx_disable,
+ .gpio_request_enable = at91_gpio_request_enable,
+ .gpio_disable_free = at91_gpio_disable_free,
+};
+
+static int at91_pinconf_get(struct pinctrl_dev *pctldev,
+ unsigned pin_id, unsigned long *config)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+ void __iomem *pio;
+ unsigned pin;
+
+ dev_dbg(info->dev, "%s:%d, pin_id=%d, config=0x%lx", __func__, __LINE__, pin_id, *config);
+ pio = pin_to_controller(info, pin_to_bank(pin_id));
+ pin = pin_id % MAX_NB_GPIO_PER_BANK;
+
+ if (at91_mux_get_multidrive(pio, pin))
+ *config |= MULTI_DRIVE;
+
+ if (at91_mux_get_pullup(pio, pin))
+ *config |= PULL_UP;
+
+ return 0;
+}
+
+static int at91_pinconf_set(struct pinctrl_dev *pctldev,
+ unsigned pin_id, unsigned long config)
+{
+ struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
+ unsigned mask;
+ void __iomem *pio;
+
+ dev_dbg(info->dev, "%s:%d, pin_id=%d, config=0x%lx", __func__, __LINE__, pin_id, config);
+ pio = pin_to_controller(info, pin_to_bank(pin_id));
+ mask = pin_to_mask(pin_id % MAX_NB_GPIO_PER_BANK);
+
+ at91_mux_set_pullup(pio, mask, config & PULL_UP);
+ at91_mux_set_multidrive(pio, mask, config & MULTI_DRIVE);
+ return 0;
+}
+
+static void at91_pinconf_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *s, unsigned pin_id)
+{
+
+}
+
+static void at91_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *s, unsigned group)
+{
+}
+
+struct pinconf_ops at91_pinconf_ops = {
+ .pin_config_get = at91_pinconf_get,
+ .pin_config_set = at91_pinconf_set,
+ .pin_config_dbg_show = at91_pinconf_dbg_show,
+ .pin_config_group_dbg_show = at91_pinconf_group_dbg_show,
+};
+
+static struct pinctrl_desc at91_pinctrl_desc = {
+ .pctlops = &at91_pctrl_ops,
+ .pmxops = &at91_pmx_ops,
+ .confops = &at91_pinconf_ops,
+ .owner = THIS_MODULE,
+};
+
+static const char *gpio_compat = "atmel,at91rm9200-gpio";
+
+static void __devinit at91_pinctrl_child_count(struct at91_pinctrl *info,
+ struct device_node *np)
+{
+ struct device_node *child;
+
+ for_each_child_of_node(np, child) {
+ if (of_device_is_compatible(child, gpio_compat)) {
+ info->nbanks++;
+ } else {
+ info->nfunctions++;
+ info->ngroups += of_get_child_count(child);
+ }
+ }
+}
+
+static int __devinit at91_pinctrl_mux_mask(struct at91_pinctrl *info,
+ struct device_node *np)
+{
+ int ret = 0;
+ int size;
+ const const __be32 *list;
+
+ list = of_get_property(np, "atmel,mux-mask", &size);
+ if (!list) {
+ dev_err(info->dev, "can not read the mux-mask of %d\n", size);
+ return -EINVAL;
+ }
+
+ size /= sizeof(*list);
+ if (!size || size % info->nbanks) {
+ dev_err(info->dev, "wrong mux mask array should be by %d\n", info->nbanks);
+ return -EINVAL;
+ }
+ info->nmux = size / info->nbanks;
+
+ info->mux_mask = devm_kzalloc(info->dev, sizeof(u32) * size, GFP_KERNEL);
+ if (!info->mux_mask) {
+ dev_err(info->dev, "could not alloc mux_mask\n");
+ return -ENOMEM;
+ }
+
+ ret = of_property_read_u32_array(np, "atmel,mux-mask",
+ info->mux_mask, size);
+ if (ret)
+ dev_err(info->dev, "can not read the mux-mask of %d\n", size);
+ return ret;
+}
+
+static int __devinit at91_pinctrl_parse_groups(struct device_node *np,
+ struct at91_pin_group *grp,
+ struct at91_pinctrl *info,
+ u32 index)
+{
+ struct at91_pmx_pin *pin;
+ int size;
+ const const __be32 *list;
+ int i, j;
+
+ dev_dbg(info->dev, "group(%d): %s\n", index, np->name);
+
+ /* Initialise group */
+ grp->name = np->name;
+
+ /*
+ * the binding format is fsl,pins = <bank pin mux CONFIG ...>,
+ * do sanity check and calculate pins number
+ */
+ list = of_get_property(np, "atmel,pins", &size);
+ /* we do not check return since it's safe node passed down */
+ size /= sizeof(*list);
+ if (!size || size % 4) {
+ dev_err(info->dev, "wrong pins number or pins and configs should be by 4\n");
+ return -EINVAL;
+ }
+
+ grp->npins = size / 4;
+ pin = grp->pins_conf = devm_kzalloc(info->dev, grp->npins * sizeof(struct at91_pmx_pin),
+ GFP_KERNEL);
+ grp->pins = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned int),
+ GFP_KERNEL);
+ if (!grp->pins_conf || !grp->pins)
+ return -ENOMEM;
+
+ for (i = 0, j = 0; i < size; i += 4, j++) {
+ pin->bank = be32_to_cpu(*list++);
+ pin->pin = be32_to_cpu(*list++);
+ grp->pins[j] = pin->bank * MAX_NB_GPIO_PER_BANK + pin->pin;
+ pin->mux = be32_to_cpu(*list++);
+ pin->conf = be32_to_cpu(*list++);
+
+ at91_pin_dbg(info->dev, pin);
+ pin++;
+ }
+
+ return 0;
+}
+
+static int __devinit at91_pinctrl_parse_functions(struct device_node *np,
+ struct at91_pinctrl *info, u32 index)
+{
+ struct device_node *child;
+ struct at91_pmx_func *func;
+ struct at91_pin_group *grp;
+ int ret;
+ static u32 grp_index;
+ u32 i = 0;
+
+ dev_dbg(info->dev, "parse function(%d): %s\n", index, np->name);
+
+ func = &info->functions[index];
+
+ /* Initialise function */
+ func->name = np->name;
+ func->ngroups = of_get_child_count(np);
+ if (func->ngroups <= 0) {
+ dev_err(info->dev, "no groups defined\n");
+ return -EINVAL;
+ }
+ func->groups = devm_kzalloc(info->dev,
+ func->ngroups * sizeof(char *), GFP_KERNEL);
+ if (!func->groups)
+ return -ENOMEM;
+
+ for_each_child_of_node(np, child) {
+ func->groups[i] = child->name;
+ grp = &info->groups[grp_index++];
+ ret = at91_pinctrl_parse_groups(child, grp, info, i++);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct of_device_id at91_pinctrl_of_match[] __devinitdata = {
+ { .compatible = "atmel,at91rm9200-pinctrl", .data = &at91rm9200_ops },
+ { .compatible = "atmel,at91sam9x5-pinctrl", .data = &at91sam9x5_ops },
+ { /* sentinel */ }
+};
+
+static int __devinit at91_pinctrl_probe_dt(struct platform_device *pdev,
+ struct at91_pinctrl *info)
+{
+ int ret = 0;
+ int i, j;
+ uint32_t *tmp;
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *child;
+
+ if (!np)
+ return -ENODEV;
+
+ info->dev = &pdev->dev;
+ info->ops =
+ of_match_device(at91_pinctrl_of_match, &pdev->dev)->data;
+ at91_pinctrl_child_count(info, np);
+
+ if (info->nbanks < 1) {
+ dev_err(&pdev->dev, "you need to specify atleast one gpio-controller\n");
+ return -EINVAL;
+ }
+
+ ret = at91_pinctrl_mux_mask(info, np);
+ if (ret)
+ return ret;
+
+ dev_dbg(&pdev->dev, "nmux = %d\n", info->nmux);
+
+ dev_dbg(&pdev->dev, "mux-mask\n");
+ tmp = info->mux_mask;
+ for (i = 0; i < info->nbanks; i++) {
+ for (j = 0; j < info->nmux; j++, tmp++) {
+ dev_dbg(&pdev->dev, "%d:%d\t0x%x\n", i, j, tmp[0]);
+ }
+ }
+
+ dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
+ dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
+ info->functions = devm_kzalloc(&pdev->dev, info->nfunctions * sizeof(struct at91_pmx_func),
+ GFP_KERNEL);
+ if (!info->functions)
+ return -ENOMEM;
+
+ info->groups = devm_kzalloc(&pdev->dev, info->ngroups * sizeof(struct at91_pin_group),
+ GFP_KERNEL);
+ if (!info->groups)
+ return -ENOMEM;
+
+ dev_dbg(&pdev->dev, "nbanks = %d\n", info->nbanks);
+ dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
+ dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
+
+ i = 0;
+
+ for_each_child_of_node(np, child) {
+ if (of_device_is_compatible(child, gpio_compat))
+ continue;
+ ret = at91_pinctrl_parse_functions(child, info, i++);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse function\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int __devinit at91_pinctrl_probe(struct platform_device *pdev)
+{
+ struct at91_pinctrl *info;
+ struct pinctrl_pin_desc *pdesc;
+ int ret, i, j ,k;
+
+ info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ ret = at91_pinctrl_probe_dt(pdev, info);
+ if (ret)
+ return ret;
+
+ /*
+ * We need all the GPIO drivers to probe FIRST, or we will not be able
+ * to obtain references to the struct gpio_chip * for them, and we
+ * need this to proceed.
+ */
+ for (i = 0; i < info->nbanks; i++) {
+ if (!gpio_chips[i]) {
+ dev_warn(&pdev->dev, "GPIO chip %d not registered yet\n", i);
+ devm_kfree(&pdev->dev, info);
+ return -EPROBE_DEFER;
+ }
+ }
+
+ at91_pinctrl_desc.name = dev_name(&pdev->dev);
+ at91_pinctrl_desc.npins = info->nbanks * MAX_NB_GPIO_PER_BANK;
+ at91_pinctrl_desc.pins = pdesc =
+ devm_kzalloc(&pdev->dev, sizeof(*pdesc) * at91_pinctrl_desc.npins, GFP_KERNEL);
+
+ if (!at91_pinctrl_desc.pins)
+ return -ENOMEM;
+
+ for (i = 0 , k = 0; i < info->nbanks; i++) {
+ for (j = 0; j < MAX_NB_GPIO_PER_BANK; j++, k++) {
+ pdesc->number = k;
+ pdesc->name = kasprintf(GFP_KERNEL, "pio%c%d", i + 'A', j);
+ pdesc++;
+ }
+ }
+
+ platform_set_drvdata(pdev, info);
+ info->pctl = pinctrl_register(&at91_pinctrl_desc, &pdev->dev, info);
+
+ if (!info->pctl) {
+ dev_err(&pdev->dev, "could not register AT91 pinctrl driver\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* We will handle a range of GPIO pins */
+ for (i = 0; i < info->nbanks; i++)
+ pinctrl_add_gpio_range(info->pctl, &gpio_chips[i]->range);
+
+ dev_info(&pdev->dev, "initialized AT91 pinctrl driver\n");
+
+ return 0;
+
+err:
+ return ret;
+}
+
+int __devexit at91_pinctrl_remove(struct platform_device *pdev)
+{
+ struct at91_pinctrl *info = platform_get_drvdata(pdev);
+
+ pinctrl_unregister(info->pctl);
+
+ return 0;
+}
+
+static int at91_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+ /*
+ * Map back to global GPIO space and request muxing, the direction
+ * parameter does not matter for this controller.
+ */
+ int gpio = chip->base + offset;
+ int bank = chip->base / chip->ngpio;
+
+ dev_dbg(chip->dev, "%s:%d pio%c%d(%d)\n", __func__, __LINE__,
+ 'A' + bank, offset, gpio);
+
+ return pinctrl_request_gpio(gpio);
+}
+
+static void at91_gpio_free(struct gpio_chip *chip, unsigned offset)
+{
+ int gpio = chip->base + offset;
+
+ pinctrl_free_gpio(gpio);
+}
+
+static int at91_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned mask = 1 << offset;
+
+ writel_relaxed(mask, pio + PIO_ODR);
+ return 0;
+}
+
+static int at91_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned mask = 1 << offset;
+ u32 pdsr;
+
+ pdsr = readl_relaxed(pio + PIO_PDSR);
+ return (pdsr & mask) != 0;
+}
+
+static void at91_gpio_set(struct gpio_chip *chip, unsigned offset,
+ int val)
+{
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned mask = 1 << offset;
+
+ writel_relaxed(mask, pio + (val ? PIO_SODR : PIO_CODR));
+}
+
+static int at91_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
+ int val)
+{
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned mask = 1 << offset;
+
+ writel_relaxed(mask, pio + (val ? PIO_SODR : PIO_CODR));
+ writel_relaxed(mask, pio + PIO_OER);
+
+ return 0;
+}
+
+static int at91_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ int virq;
+
+ if (offset < chip->ngpio)
+ virq = irq_create_mapping(at91_gpio->domain, offset);
+ else
+ virq = -ENXIO;
+
+ dev_dbg(chip->dev, "%s: request IRQ for GPIO %d, return %d\n",
+ chip->label, offset + chip->base, virq);
+ return virq;
+}
+
+#ifdef CONFIG_DEBUG_FS
+static void at91_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
+{
+ enum at91_mux mode;
+ int i;
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ void __iomem *pio = at91_gpio->regbase;
+
+ for (i = 0; i < chip->ngpio; i++) {
+ unsigned pin = chip->base + i;
+ unsigned mask = pin_to_mask(pin);
+ const char *gpio_label;
+ u32 pdsr;
+
+ gpio_label = gpiochip_is_requested(chip, i);
+ if (!gpio_label)
+ continue;
+ mode = at91_gpio->ops->get_periph(pio, mask);
+ seq_printf(s, "[%s] GPIO%s%d: ",
+ gpio_label, chip->label, i);
+ if (mode == AT91_MUX_GPIO) {
+ pdsr = readl_relaxed(pio + PIO_PDSR);
+
+ seq_printf(s, "[gpio] %s\n",
+ pdsr & mask ?
+ "set" : "clear");
+ } else {
+ seq_printf(s, "[periph %c]\n",
+ mode + 'A' - 1);
+ }
+ }
+}
+#else
+#define at91_gpio_dbg_show NULL
+#endif
+
+/* Several AIC controller irqs are dispatched through this GPIO handler.
+ * To use any AT91_PIN_* as an externally triggered IRQ, first call
+ * at91_set_gpio_input() then maybe enable its glitch filter.
+ * Then just request_irq() with the pin ID; it works like any ARM IRQ
+ * handler.
+ * First implementation always triggers on rising and falling edges
+ * whereas the newer PIO3 can be additionally configured to trigger on
+ * level, edge with any polarity.
+ *
+ * Alternatively, certain pins may be used directly as IRQ0..IRQ6 after
+ * configuring them with at91_set_a_periph() or at91_set_b_periph().
+ * IRQ0..IRQ6 should be configurable, e.g. level vs edge triggering.
+ */
+
+static void gpio_irq_mask(struct irq_data *d)
+{
+ struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned mask = 1 << d->hwirq;
+
+ if (pio)
+ writel_relaxed(mask, pio + PIO_IDR);
+}
+
+static void gpio_irq_unmask(struct irq_data *d)
+{
+ struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned mask = 1 << d->hwirq;
+
+ if (pio)
+ writel_relaxed(mask, pio + PIO_IER);
+}
+
+static int gpio_irq_type(struct irq_data *d, unsigned type)
+{
+ switch (type) {
+ case IRQ_TYPE_NONE:
+ case IRQ_TYPE_EDGE_BOTH:
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+/* Alternate irq type for PIO3 support */
+static int alt_gpio_irq_type(struct irq_data *d, unsigned type)
+{
+ struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned mask = 1 << d->hwirq;
+
+ switch (type) {
+ case IRQ_TYPE_EDGE_RISING:
+ writel_relaxed(mask, pio + PIO_ESR);
+ writel_relaxed(mask, pio + PIO_REHLSR);
+ break;
+ case IRQ_TYPE_EDGE_FALLING:
+ writel_relaxed(mask, pio + PIO_ESR);
+ writel_relaxed(mask, pio + PIO_FELLSR);
+ break;
+ case IRQ_TYPE_LEVEL_LOW:
+ writel_relaxed(mask, pio + PIO_LSR);
+ writel_relaxed(mask, pio + PIO_FELLSR);
+ break;
+ case IRQ_TYPE_LEVEL_HIGH:
+ writel_relaxed(mask, pio + PIO_LSR);
+ writel_relaxed(mask, pio + PIO_REHLSR);
+ break;
+ case IRQ_TYPE_EDGE_BOTH:
+ /*
+ * disable additional interrupt modes:
+ * fall back to default behavior
+ */
+ writel_relaxed(mask, pio + PIO_AIMDR);
+ return 0;
+ case IRQ_TYPE_NONE:
+ default:
+ pr_warn("AT91: No type for irq %d\n", gpio_to_irq(d->irq));
+ return -EINVAL;
+ }
+
+ /* enable additional interrupt modes */
+ writel_relaxed(mask, pio + PIO_AIMER);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int gpio_irq_set_wake(struct irq_data *d, unsigned state)
+{
+ struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
+ unsigned bank = at91_gpio->pioc_idx;
+
+ if (unlikely(bank >= MAX_GPIO_BANKS))
+ return -EINVAL;
+
+ irq_set_irq_wake(at91_gpio->pioc_virq, state);
+
+ return 0;
+}
+#else
+#define gpio_irq_set_wake NULL
+#endif
+
+static struct irq_chip gpio_irqchip = {
+ .name = "GPIO",
+ .irq_disable = gpio_irq_mask,
+ .irq_mask = gpio_irq_mask,
+ .irq_unmask = gpio_irq_unmask,
+ /* .irq_set_type is set dynamically */
+ .irq_set_wake = gpio_irq_set_wake,
+};
+
+static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
+{
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ struct irq_data *idata = irq_desc_get_irq_data(desc);
+ struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(idata);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned long isr;
+ int n;
+
+ chained_irq_enter(chip, desc);
+ for (;;) {
+ /* Reading ISR acks pending (edge triggered) GPIO interrupts.
+ * When there none are pending, we're finished unless we need
+ * to process multiple banks (like ID_PIOCDE on sam9263).
+ */
+ isr = readl_relaxed(pio + PIO_ISR) & readl_relaxed(pio + PIO_IMR);
+ if (!isr) {
+ if (!at91_gpio->next)
+ break;
+ at91_gpio = at91_gpio->next;
+ pio = at91_gpio->regbase;
+ continue;
+ }
+
+ n = find_first_bit(&isr, BITS_PER_LONG);
+ while (n < BITS_PER_LONG) {
+ generic_handle_irq(irq_find_mapping(at91_gpio->domain, n));
+ n = find_next_bit(&isr, BITS_PER_LONG, n + 1);
+ }
+ }
+ chained_irq_exit(chip, desc);
+ /* now it may re-trigger */
+}
+
+/*
+ * This lock class tells lockdep that GPIO irqs are in a different
+ * category than their parents, so it won't report false recursion.
+ */
+static struct lock_class_key gpio_lock_class;
+
+static int at91_gpio_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ struct at91_gpio_chip *at91_gpio = h->host_data;
+
+ irq_set_lockdep_class(virq, &gpio_lock_class);
+
+ /*
+ * Can use the "simple" and not "edge" handler since it's
+ * shorter, and the AIC handles interrupts sanely.
+ */
+ irq_set_chip_and_handler(virq, &gpio_irqchip,
+ handle_simple_irq);
+ set_irq_flags(virq, IRQF_VALID);
+ irq_set_chip_data(virq, at91_gpio);
+
+ return 0;
+}
+
+static struct irq_domain_ops at91_gpio_ops = {
+ .map = at91_gpio_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+static int at91_gpio_of_irq_setup(struct device_node *node,
+ struct at91_gpio_chip *at91_gpio)
+{
+ struct at91_gpio_chip *prev = NULL;
+ struct irq_data *d = irq_get_irq_data(at91_gpio->pioc_virq);
+
+ at91_gpio->pioc_hwirq = irqd_to_hwirq(d);
+
+ /* Setup proper .irq_set_type function */
+ gpio_irqchip.irq_set_type = at91_gpio->ops->irq_type;
+
+ /* Disable irqs of this PIO controller */
+ writel_relaxed(~0, at91_gpio->regbase + PIO_IDR);
+
+ /* Setup irq domain */
+ at91_gpio->domain = irq_domain_add_linear(node, at91_gpio->chip.ngpio,
+ &at91_gpio_ops, at91_gpio);
+ if (!at91_gpio->domain)
+ panic("at91_gpio.%d: couldn't allocate irq domain (DT).\n",
+ at91_gpio->pioc_idx);
+
+ /* Setup chained handler */
+ if (at91_gpio->pioc_idx)
+ prev = gpio_chips[at91_gpio->pioc_idx - 1];
+
+ /* The toplevel handler handles one bank of GPIOs, except
+ * on some SoC it can handles up to three...
+ * We only set up the handler for the first of the list.
+ */
+ if (prev && prev->next == at91_gpio)
+ return 0;
+
+ irq_set_chip_data(at91_gpio->pioc_virq, at91_gpio);
+ irq_set_chained_handler(at91_gpio->pioc_virq, gpio_irq_handler);
+
+ return 0;
+}
+
+/* This structure is replicated for each GPIO block allocated at probe time */
+static struct gpio_chip at91_gpio_template = {
+ .request = at91_gpio_request,
+ .free = at91_gpio_free,
+ .direction_input = at91_gpio_direction_input,
+ .get = at91_gpio_get,
+ .direction_output = at91_gpio_direction_output,
+ .set = at91_gpio_set,
+ .to_irq = at91_gpio_to_irq,
+ .dbg_show = at91_gpio_dbg_show,
+ .can_sleep = 0,
+ .ngpio = MAX_NB_GPIO_PER_BANK,
+};
+
+static void __devinit at91_gpio_probe_fixup(void)
+{
+ unsigned i;
+ struct at91_gpio_chip *at91_gpio, *last = NULL;
+
+ for (i = 0; i < gpio_banks; i++) {
+ at91_gpio = gpio_chips[i];
+
+ /*
+ * GPIO controller are grouped on some SoC:
+ * PIOC, PIOD and PIOE can share the same IRQ line
+ */
+ if (last && last->pioc_virq == at91_gpio->pioc_virq)
+ last->next = at91_gpio;
+ last = at91_gpio;
+ }
+}
+
+static struct of_device_id at91_gpio_of_match[] __devinitdata = {
+ { .compatible = "atmel,at91rm9200-gpio", .data = &at91rm9200_ops },
+ { .compatible = "atmel,at91sam9x5-gpio", .data = &at91sam9x5_ops, },
+ { /* sentinel */ }
+};
+
+static int __devinit at91_gpio_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct resource *res;
+ struct at91_gpio_chip *at91_chip = NULL;
+ struct gpio_chip *chip;
+ struct pinctrl_gpio_range *range;
+ int ret = 0;
+ int irq;
+ int alias_idx = of_alias_get_id(np, "gpio");
+ uint32_t ngpio;
+
+ BUG_ON(alias_idx >= ARRAY_SIZE(gpio_chips));
+ if (gpio_chips[alias_idx]) {
+ ret = -EBUSY;
+ goto err;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ ret = -ENOENT;
+ goto err;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ ret = irq;
+ goto err;
+ }
+
+ at91_chip = devm_kzalloc(&pdev->dev, sizeof(*at91_chip), GFP_KERNEL);
+ if (!at91_chip) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ at91_chip->regbase = devm_request_and_ioremap(&pdev->dev, res);
+ if (!at91_chip->regbase) {
+ dev_err(&pdev->dev, "failed to map registers, ignoring.\n");
+ ret = -EBUSY;
+ goto err;
+ }
+
+ at91_chip->ops =
+ of_match_device(at91_gpio_of_match, &pdev->dev)->data;
+ at91_chip->pioc_virq = irq;
+ at91_chip->pioc_idx = alias_idx;
+
+ at91_chip->clock = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(at91_chip->clock)) {
+ dev_err(&pdev->dev, "failed to get clock, ignoring.\n");
+ goto err;
+ }
+
+ if (clk_prepare(at91_chip->clock))
+ goto clk_prep_err;
+
+ /* enable PIO controller's clock */
+ if (clk_enable(at91_chip->clock)) {
+ dev_err(&pdev->dev, "failed to enable clock, ignoring.\n");
+ goto clk_err;
+ }
+
+ at91_chip->chip = at91_gpio_template;
+
+ chip = &at91_chip->chip;
+ chip->of_node = np;
+ chip->label = dev_name(&pdev->dev);
+ chip->dev = &pdev->dev;
+ chip->owner = THIS_MODULE;
+ chip->base = alias_idx * MAX_NB_GPIO_PER_BANK;
+
+ if (!of_property_read_u32(np, "#gpio-lines", &ngpio)) {
+ if (ngpio >= MAX_NB_GPIO_PER_BANK)
+ pr_err("at91_gpio.%d, gpio-nb >= %d failback to %d\n",
+ alias_idx, MAX_NB_GPIO_PER_BANK, MAX_NB_GPIO_PER_BANK);
+ else
+ chip->ngpio = ngpio;
+ }
+
+ range = &at91_chip->range;
+ range->name = chip->label;
+ range->id = alias_idx;
+ range->pin_base = range->base = range->id * MAX_NB_GPIO_PER_BANK;
+
+ range->npins = chip->ngpio;
+ range->gc = chip;
+
+ ret = gpiochip_add(chip);
+ if (ret)
+ goto clk_err;
+
+ gpio_chips[alias_idx] = at91_chip;
+ gpio_banks = max(gpio_banks, alias_idx + 1);
+
+ at91_gpio_probe_fixup();
+
+ at91_gpio_of_irq_setup(np, at91_chip);
+
+ dev_info(&pdev->dev, "at address %p\n", at91_chip->regbase);
+
+ return 0;
+
+clk_err:
+ clk_unprepare(at91_chip->clock);
+clk_prep_err:
+ clk_put(at91_chip->clock);
+err:
+ dev_err(&pdev->dev, "Failure %i for GPIO %i\n", ret, alias_idx);
+
+ return ret;
+}
+
+static struct platform_driver at91_gpio_driver = {
+ .driver = {
+ .name = "gpio-at91",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(at91_gpio_of_match),
+ },
+ .probe = at91_gpio_probe,
+};
+
+static struct platform_driver at91_pinctrl_driver = {
+ .driver = {
+ .name = "pinctrl-at91",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(at91_pinctrl_of_match),
+ },
+ .probe = at91_pinctrl_probe,
+ .remove = __devexit_p(at91_pinctrl_remove),
+};
+
+static int __init at91_pinctrl_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&at91_gpio_driver);
+ if (ret)
+ return ret;
+ return platform_driver_register(&at91_pinctrl_driver);
+}
+arch_initcall(at91_pinctrl_init);
+
+static void __exit at91_pinctrl_exit(void)
+{
+ platform_driver_unregister(&at91_pinctrl_driver);
+}
+
+module_exit(at91_pinctrl_exit);
+MODULE_AUTHOR("Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>");
+MODULE_DESCRIPTION("Atmel AT91 pinctrl driver");
+MODULE_LICENSE("GPL v2");
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 07/16] ARM: at91: add pinctrl support
2012-09-17 15:27 ` [PATCH 07/16] ARM: at91: add pinctrl support Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-25 14:59 ` Nicolas Ferre
0 siblings, 0 replies; 18+ messages in thread
From: Nicolas Ferre @ 2012-09-25 14:59 UTC (permalink / raw)
To: linux-arm-kernel
On 09/17/2012 05:27 PM, Jean-Christophe PLAGNIOL-VILLARD :
> This is also include the gpio controller as the IP share both.
> Each soc will have to describe the SoC limitation and pin configuration via
> DT.
>
> This will allow to do not need to touch the C code when adding new SoC if the
> IP version is supported.
>
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Seems good:
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Thanks a lot,
Bye,
> ---
> .../bindings/pinctrl/atmel,at91-pinctrl.txt | 84 ++
> arch/arm/Kconfig | 2 +
> arch/arm/mach-at91/board-dt.c | 2 -
> arch/arm/mach-at91/gpio.c | 165 +--
> drivers/pinctrl/Kconfig | 9 +
> drivers/pinctrl/Makefile | 1 +
> drivers/pinctrl/pinctrl-at91.c | 1490 ++++++++++++++++++++
> 7 files changed, 1591 insertions(+), 162 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt
> create mode 100644 drivers/pinctrl/pinctrl-at91.c
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt
> new file mode 100644
> index 0000000..0296ef4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt
> @@ -0,0 +1,84 @@
> +* Atmel AT91 Pinmux Controller
> +
> +The AT91 Pinmux Controler, enables the IC
> +to share one PAD to several functional blocks. The sharing is done by
> +multiplexing the PAD input/output signals. For each PAD there are up to
> +8 muxing options (called periph modes). Since different modules require
> +different PAD settings (like pull up, keeper, etc) the contoller controls
> +also the PAD settings parameters.
> +
> +Please refer to pinctrl-bindings.txt in this directory for details of the
> +common pinctrl bindings used by client devices, including the meaning of the
> +phrase "pin configuration node".
> +
> +Atmel AT91 pin configuration node is a node of a group of pins which can be
> +used for a specific device or function. This node represents both mux and config
> +of the pins in that group. The 'pins' selects the function mode(also named pin
> +mode) this pin can work on and the 'config' configures various pad settings
> +such as pull-up, multi drive, etc.
> +
> +Required properties for iomux controller:
> +- compatible: "atmel,at91rm9200-pinctrl"
> +- atmel,mux-mask: array of mask (periph per bank) to describe if a pin can be
> + configured in this periph mode. All the periph and bank need to be describe.
> +
> +Required properties for pin configuration node:
> +- atmel,pins: 4 integers array, represents a group of pins mux and config
> + setting. The format is atmel,pins = <PIN_BANK PIN_BANK_NUM PERIPH CONFIG>.
> + The PERIPH 0 means gpio.
> +
> +Bits used for CONFIG:
> +PULL_UP(1 << 0): indicate this pin need a pull up.
> +MULTIDRIVE(1 << 1): indicate this pin need to be configured as multidrive.
> +
> +NOTE:
> +Some requirements for using atmel,at91rm9200-pinctrl binding:
> +1. We have pin function node defined under at91 controller node to represent
> + what pinmux functions this SoC supports.
> +2. The pin configuration node intends to work on a specific function should
> + to be defined under that specific function node.
> + The function node's name should represent well about what function
> + this group of pins in this pin configuration node are working on.
> +3. The driver can use the function node's name and pin configuration node's
> + name describe the pin function and group hierarchy.
> + For example, Linux Iat91 pinctrl driver takes the function node's name
> + as the function name and pin configuration node's name as group name to
> + create the map table.
> +4. Each pin configuration node should have a phandle, devices can set pins
> + configurations by referring to the phandle of that pin configuration node.
> +5. The gpio controller must be describe in the pinctrl simple-bus.
> +
> +Examples:
> +
> +pinctrl at fffff400 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> + compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
> + reg = <0xfffff400 0x600>;
> +
> + atmel,mux-mask = <
> + /* A B */
> + 0xffffffff 0xffc00c3b /* pioA */
> + 0xffffffff 0x7fff3ccf /* pioB */
> + 0xffffffff 0x007fffff /* pioC */
> + >;
> +
> + /* shared pinctrl settings */
> + dbgu {
> + pinctrl_dbgu: dbgu-0 {
> + atmel,pins =
> + <1 14 0x1 0x0 /* PB14 periph A */
> + 1 15 0x1 0x1>; /* PB15 periph with pullup */
> + };
> + };
> +};
> +
> +dbgu: serial at fffff200 {
> + compatible = "atmel,at91sam9260-usart";
> + reg = <0xfffff200 0x200>;
> + interrupts = <1 4 7>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_dbgu>;
> + status = "disabled";
> +};
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 6d6e18f..4e49e28 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -346,6 +346,8 @@ config ARCH_AT91
> select CLKDEV_LOOKUP
> select IRQ_DOMAIN
> select NEED_MACH_IO_H if PCCARD
> + select PINCTRL
> + select PINCTRL_AT91 if USE_OF
> help
> This enables support for systems based on Atmel
> AT91RM9200 and AT91SAM9* processors.
> diff --git a/arch/arm/mach-at91/board-dt.c b/arch/arm/mach-at91/board-dt.c
> index e8f45c4..3b6a948 100644
> --- a/arch/arm/mach-at91/board-dt.c
> +++ b/arch/arm/mach-at91/board-dt.c
> @@ -30,8 +30,6 @@
> static const struct of_device_id irq_of_match[] __initconst = {
>
> { .compatible = "atmel,at91rm9200-aic", .data = at91_aic_of_init },
> - { .compatible = "atmel,at91rm9200-gpio", .data = at91_gpio_of_irq_setup },
> - { .compatible = "atmel,at91sam9x5-gpio", .data = at91_gpio_of_irq_setup },
> { /*sentinel*/ }
> };
>
> diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
> index a34f0ed..c5d7e1e 100644
> --- a/arch/arm/mach-at91/gpio.c
> +++ b/arch/arm/mach-at91/gpio.c
> @@ -23,8 +23,6 @@
> #include <linux/io.h>
> #include <linux/irqdomain.h>
> #include <linux/of_address.h>
> -#include <linux/of_irq.h>
> -#include <linux/of_gpio.h>
>
> #include <asm/mach/irq.h>
>
> @@ -717,80 +715,6 @@ postcore_initcall(at91_gpio_debugfs_init);
> */
> static struct lock_class_key gpio_lock_class;
>
> -#if defined(CONFIG_OF)
> -static int at91_gpio_irq_map(struct irq_domain *h, unsigned int virq,
> - irq_hw_number_t hw)
> -{
> - struct at91_gpio_chip *at91_gpio = h->host_data;
> -
> - irq_set_lockdep_class(virq, &gpio_lock_class);
> -
> - /*
> - * Can use the "simple" and not "edge" handler since it's
> - * shorter, and the AIC handles interrupts sanely.
> - */
> - irq_set_chip_and_handler(virq, &gpio_irqchip,
> - handle_simple_irq);
> - set_irq_flags(virq, IRQF_VALID);
> - irq_set_chip_data(virq, at91_gpio);
> -
> - return 0;
> -}
> -
> -static struct irq_domain_ops at91_gpio_ops = {
> - .map = at91_gpio_irq_map,
> - .xlate = irq_domain_xlate_twocell,
> -};
> -
> -int __init at91_gpio_of_irq_setup(struct device_node *node,
> - struct device_node *parent)
> -{
> - struct at91_gpio_chip *prev = NULL;
> - int alias_idx = of_alias_get_id(node, "gpio");
> - struct at91_gpio_chip *at91_gpio = &gpio_chip[alias_idx];
> -
> - /* Setup proper .irq_set_type function */
> - if (has_pio3())
> - gpio_irqchip.irq_set_type = alt_gpio_irq_type;
> - else
> - gpio_irqchip.irq_set_type = gpio_irq_type;
> -
> - /* Disable irqs of this PIO controller */
> - __raw_writel(~0, at91_gpio->regbase + PIO_IDR);
> -
> - /* Setup irq domain */
> - at91_gpio->domain = irq_domain_add_linear(node, at91_gpio->chip.ngpio,
> - &at91_gpio_ops, at91_gpio);
> - if (!at91_gpio->domain)
> - panic("at91_gpio.%d: couldn't allocate irq domain (DT).\n",
> - at91_gpio->pioc_idx);
> -
> - /* Setup chained handler */
> - if (at91_gpio->pioc_idx)
> - prev = &gpio_chip[at91_gpio->pioc_idx - 1];
> -
> - /* The toplevel handler handles one bank of GPIOs, except
> - * on some SoC it can handles up to three...
> - * We only set up the handler for the first of the list.
> - */
> - if (prev && prev->next == at91_gpio)
> - return 0;
> -
> - at91_gpio->pioc_virq = irq_create_mapping(irq_find_host(parent),
> - at91_gpio->pioc_hwirq);
> - irq_set_chip_data(at91_gpio->pioc_virq, at91_gpio);
> - irq_set_chained_handler(at91_gpio->pioc_virq, gpio_irq_handler);
> -
> - return 0;
> -}
> -#else
> -int __init at91_gpio_of_irq_setup(struct device_node *node,
> - struct device_node *parent)
> -{
> - return -EINVAL;
> -}
> -#endif
> -
> /*
> * irqdomain initialization: pile up irqdomains on top of AIC range
> */
> @@ -989,85 +913,6 @@ err:
> return -EINVAL;
> }
>
> -#ifdef CONFIG_OF_GPIO
> -static void __init of_at91_gpio_init_one(struct device_node *np)
> -{
> - int alias_idx;
> - struct at91_gpio_chip *at91_gpio;
> - uint32_t ngpio;
> -
> - if (!np)
> - return;
> -
> - alias_idx = of_alias_get_id(np, "gpio");
> - if (alias_idx >= MAX_GPIO_BANKS) {
> - pr_err("at91_gpio, failed alias idx(%d) > MAX_GPIO_BANKS(%d), ignoring.\n",
> - alias_idx, MAX_GPIO_BANKS);
> - return;
> - }
> -
> - at91_gpio = &gpio_chip[alias_idx];
> - at91_gpio->chip.base = alias_idx * MAX_NB_GPIO_PER_BANK;
> -
> - at91_gpio->regbase = of_iomap(np, 0);
> - if (!at91_gpio->regbase) {
> - pr_err("at91_gpio.%d, failed to map registers, ignoring.\n",
> - alias_idx);
> - return;
> - }
> -
> - /* Get the interrupts property */
> - if (of_property_read_u32(np, "interrupts", &at91_gpio->pioc_hwirq)) {
> - pr_err("at91_gpio.%d, failed to get interrupts property, ignoring.\n",
> - alias_idx);
> - goto ioremap_err;
> - }
> -
> - /* Get capabilities from compatibility property */
> - if (of_device_is_compatible(np, "atmel,at91sam9x5-gpio"))
> - at91_gpio_caps |= AT91_GPIO_CAP_PIO3;
> -
> - if (!of_property_read_u32(np, "#gpio-lines", &ngpio)) {
> - if (ngpio >= MAX_NB_GPIO_PER_BANK)
> - pr_err("at91_gpio.%d, gpio-nb >= %d failback to %d\n",
> - alias_idx, MAX_NB_GPIO_PER_BANK, MAX_NB_GPIO_PER_BANK);
> - else
> - at91_gpio->chip.ngpio = ngpio;
> - }
> -
> - /* Setup clock */
> - if (at91_gpio_setup_clk(alias_idx))
> - goto ioremap_err;
> -
> - at91_gpio->chip.of_node = np;
> - gpio_banks = max(gpio_banks, alias_idx + 1);
> - at91_gpio->pioc_idx = alias_idx;
> - return;
> -
> -ioremap_err:
> - iounmap(at91_gpio->regbase);
> -}
> -
> -static int __init of_at91_gpio_init(void)
> -{
> - struct device_node *np = NULL;
> -
> - /*
> - * This isn't ideal, but it gets things hooked up until this
> - * driver is converted into a platform_device
> - */
> - for_each_compatible_node(np, NULL, "atmel,at91rm9200-gpio")
> - of_at91_gpio_init_one(np);
> -
> - return gpio_banks > 0 ? 0 : -EINVAL;
> -}
> -#else
> -static int __init of_at91_gpio_init(void)
> -{
> - return -EINVAL;
> -}
> -#endif
> -
> static void __init at91_gpio_init_one(int idx, u32 regbase, int pioc_hwirq)
> {
> struct at91_gpio_chip *at91_gpio = &gpio_chip[idx];
> @@ -1102,11 +947,11 @@ void __init at91_gpio_init(struct at91_gpio_bank *data, int nr_banks)
>
> BUG_ON(nr_banks > MAX_GPIO_BANKS);
>
> - if (of_at91_gpio_init() < 0) {
> - /* No GPIO controller found in device tree */
> - for (i = 0; i < nr_banks; i++)
> - at91_gpio_init_one(i, data[i].regbase, data[i].id);
> - }
> + if (of_have_populated_dt())
> + return;
> +
> + for (i = 0; i < nr_banks; i++)
> + at91_gpio_init_one(i, data[i].regbase, data[i].id);
>
> for (i = 0; i < gpio_banks; i++) {
> at91_gpio = &gpio_chip[i];
> diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
> index 54e3588..953932a 100644
> --- a/drivers/pinctrl/Kconfig
> +++ b/drivers/pinctrl/Kconfig
> @@ -26,6 +26,15 @@ config DEBUG_PINCTRL
> help
> Say Y here to add some extra checks and diagnostics to PINCTRL calls.
>
> +config PINCTRL_AT91
> + bool "AT91 pinctrl driver"
> + depends on OF
> + depends on ARCH_AT91
> + select PINMUX
> + select PINCONF
> + help
> + Say Y here to enable the at91 pinctrl driver
> +
> config PINCTRL_IMX
> bool
> select PINMUX
> diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
> index f40b1f8..d3fda00 100644
> --- a/drivers/pinctrl/Makefile
> +++ b/drivers/pinctrl/Makefile
> @@ -9,6 +9,7 @@ ifeq ($(CONFIG_OF),y)
> obj-$(CONFIG_PINCTRL) += devicetree.o
> endif
> obj-$(CONFIG_GENERIC_PINCONF) += pinconf-generic.o
> +obj-$(CONFIG_PINCTRL_AT91) += pinctrl-at91.o
> obj-$(CONFIG_PINCTRL_IMX) += pinctrl-imx.o
> obj-$(CONFIG_PINCTRL_IMX51) += pinctrl-imx51.o
> obj-$(CONFIG_PINCTRL_IMX53) += pinctrl-imx53.o
> diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
> new file mode 100644
> index 0000000..e4712d1
> --- /dev/null
> +++ b/drivers/pinctrl/pinctrl-at91.c
> @@ -0,0 +1,1490 @@
> +/*
> + * at91 pinctrl driver based on at91 pinmux core
> + *
> + * Copyright (C) 2011-2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
> + *
> + * Under GPLv2 only
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/err.h>
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/of_address.h>
> +#include <linux/of_irq.h>
> +#include <linux/slab.h>
> +#include <linux/interrupt.h>
> +#include <linux/irq.h>
> +#include <linux/irqdomain.h>
> +#include <linux/io.h>
> +#include <linux/gpio.h>
> +#include <linux/irqdomain.h>
> +#include <linux/pinctrl/machine.h>
> +#include <linux/pinctrl/pinconf.h>
> +#include <linux/pinctrl/pinctrl.h>
> +#include <linux/pinctrl/pinmux.h>
> +/* Since we request GPIOs from ourself */
> +#include <linux/pinctrl/consumer.h>
> +
> +#include <asm/mach/irq.h>
> +
> +#include <mach/hardware.h>
> +#include <mach/at91_pio.h>
> +
> +#include "core.h"
> +
> +#define MAX_NB_GPIO_PER_BANK 32
> +
> +struct at91_pinctrl_mux_ops;
> +
> +struct at91_gpio_chip {
> + struct gpio_chip chip;
> + struct pinctrl_gpio_range range;
> + struct at91_gpio_chip *next; /* Bank sharing same clock */
> + int pioc_hwirq; /* PIO bank interrupt identifier on AIC */
> + int pioc_virq; /* PIO bank Linux virtual interrupt */
> + int pioc_idx; /* PIO bank index */
> + void __iomem *regbase; /* PIO bank virtual address */
> + struct clk *clock; /* associated clock */
> + struct irq_domain *domain; /* associated irq domain */
> + struct at91_pinctrl_mux_ops *ops; /* ops */
> +};
> +
> +#define to_at91_gpio_chip(c) container_of(c, struct at91_gpio_chip, chip)
> +
> +static struct at91_gpio_chip *gpio_chips[MAX_GPIO_BANKS];
> +
> +static int gpio_banks;
> +
> +#define PULL_UP (0 << 1)
> +#define MULTI_DRIVE (1 << 1)
> +
> +/**
> + * struct at91_pmx_func - describes AT91 pinmux functions
> + * @name: the name of this specific function
> + * @groups: corresponding pin groups
> + * @ngroups: the number of groups
> + */
> +struct at91_pmx_func {
> + const char *name;
> + const char **groups;
> + unsigned ngroups;
> +};
> +
> +enum at91_mux {
> + AT91_MUX_GPIO = 0,
> + AT91_MUX_PERIPH_A = 1,
> + AT91_MUX_PERIPH_B = 2,
> + AT91_MUX_PERIPH_C = 3,
> + AT91_MUX_PERIPH_D = 4,
> +};
> +
> +/**
> + * struct at91_pmx_pin - describes an At91 pin mux
> + * @bank: the bank of the pin
> + * @pin: the pin number in the @bank
> + * @mux: the mux mode : gpio or periph_x of the pin i.e. alternate function.
> + * @conf: the configuration of the pin: PULL_UP, MULTIDRIVE etc...
> + */
> +struct at91_pmx_pin {
> + uint32_t bank;
> + uint32_t pin;
> + enum at91_mux mux;
> + unsigned long conf;
> +};
> +
> +/**
> + * struct at91_pin_group - describes an At91 pin group
> + * @name: the name of this specific pin group
> + * @pins_conf: the mux mode for each pin in this group. The size of this
> + * array is the same as pins.
> + * @pins: an array of discrete physical pins used in this group, taken
> + * from the driver-local pin enumeration space
> + * @npins: the number of pins in this group array, i.e. the number of
> + * elements in .pins so we can iterate over that array
> + */
> +struct at91_pin_group {
> + const char *name;
> + struct at91_pmx_pin *pins_conf;
> + unsigned int *pins;
> + unsigned npins;
> +};
> +
> +/**
> + * struct at91_pinctrl_mux_ops - describes an At91 mux ops group
> + * on new IP with support for periph C and D the way to mux in
> + * periph A and B has changed
> + * So provide the right call back
> + * if not present means the IP does not support it
> + * @get_periph: return the periph mode configured
> + * @mux_A_periph: mux as periph A
> + * @mux_B_periph: mux as periph B
> + * @mux_C_periph: mux as periph C
> + * @mux_D_periph: mux as periph D
> + * @irq_type: return irq type
> + */
> +struct at91_pinctrl_mux_ops {
> + enum at91_mux (*get_periph)(void __iomem *pio, unsigned mask);
> + void (*mux_A_periph)(void __iomem *pio, unsigned mask);
> + void (*mux_B_periph)(void __iomem *pio, unsigned mask);
> + void (*mux_C_periph)(void __iomem *pio, unsigned mask);
> + void (*mux_D_periph)(void __iomem *pio, unsigned mask);
> + /* irq */
> + int (*irq_type)(struct irq_data *d, unsigned type);
> +};
> +
> +static int gpio_irq_type(struct irq_data *d, unsigned type);
> +static int alt_gpio_irq_type(struct irq_data *d, unsigned type);
> +
> +struct at91_pinctrl {
> + struct device *dev;
> + struct pinctrl_dev *pctl;
> +
> + int nbanks;
> +
> + uint32_t *mux_mask;
> + int nmux;
> +
> + struct at91_pmx_func *functions;
> + int nfunctions;
> +
> + struct at91_pin_group *groups;
> + int ngroups;
> +
> + struct at91_pinctrl_mux_ops *ops;
> +};
> +
> +static const inline struct at91_pin_group *at91_pinctrl_find_group_by_name(
> + const struct at91_pinctrl *info,
> + const char *name)
> +{
> + const struct at91_pin_group *grp = NULL;
> + int i;
> +
> + for (i = 0; i < info->ngroups; i++) {
> + if (strcmp(info->groups[i].name, name))
> + continue;
> +
> + grp = &info->groups[i];
> + dev_dbg(info->dev, "%s: %d 0:%d\n", name, grp->npins, grp->pins[0]);
> + break;
> + }
> +
> + return grp;
> +}
> +
> +static int at91_get_groups_count(struct pinctrl_dev *pctldev)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> +
> + return info->ngroups;
> +}
> +
> +static const char *at91_get_group_name(struct pinctrl_dev *pctldev,
> + unsigned selector)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> +
> + return info->groups[selector].name;
> +}
> +
> +static int at91_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector,
> + const unsigned **pins,
> + unsigned *npins)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> +
> + if (selector >= info->ngroups)
> + return -EINVAL;
> +
> + *pins = info->groups[selector].pins;
> + *npins = info->groups[selector].npins;
> +
> + return 0;
> +}
> +
> +static void at91_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
> + unsigned offset)
> +{
> + seq_printf(s, "%s", dev_name(pctldev->dev));
> +}
> +
> +static int at91_dt_node_to_map(struct pinctrl_dev *pctldev,
> + struct device_node *np,
> + struct pinctrl_map **map, unsigned *num_maps)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> + const struct at91_pin_group *grp;
> + struct pinctrl_map *new_map;
> + struct device_node *parent;
> + int map_num = 1;
> + int i;
> + struct at91_pmx_pin *pin;
> +
> + /*
> + * first find the group of this node and check if we need create
> + * config maps for pins
> + */
> + grp = at91_pinctrl_find_group_by_name(info, np->name);
> + if (!grp) {
> + dev_err(info->dev, "unable to find group for node %s\n",
> + np->name);
> + return -EINVAL;
> + }
> +
> + map_num += grp->npins;
> + new_map = devm_kzalloc(pctldev->dev, sizeof(*new_map) * map_num, GFP_KERNEL);
> + if (!new_map)
> + return -ENOMEM;
> +
> + *map = new_map;
> + *num_maps = map_num;
> +
> + /* create mux map */
> + parent = of_get_parent(np);
> + if (!parent) {
> + kfree(new_map);
> + return -EINVAL;
> + }
> + new_map[0].type = PIN_MAP_TYPE_MUX_GROUP;
> + new_map[0].data.mux.function = parent->name;
> + new_map[0].data.mux.group = np->name;
> + of_node_put(parent);
> +
> + /* create config map */
> + new_map++;
> + for (i = 0; i < grp->npins; i++) {
> + pin = &grp->pins_conf[i];
> +
> + new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN;
> + new_map[i].data.configs.group_or_pin =
> + pin_get_name(pctldev, grp->pins[i]);
> + new_map[i].data.configs.configs = &grp->pins_conf[i].conf;
> + new_map[i].data.configs.num_configs = 1;
> + }
> +
> + dev_dbg(pctldev->dev, "maps: function %s group %s num %d\n",
> + (*map)->data.mux.function, (*map)->data.mux.group, map_num);
> +
> + return 0;
> +}
> +
> +static void at91_dt_free_map(struct pinctrl_dev *pctldev,
> + struct pinctrl_map *map, unsigned num_maps)
> +{
> +}
> +
> +static struct pinctrl_ops at91_pctrl_ops = {
> + .get_groups_count = at91_get_groups_count,
> + .get_group_name = at91_get_group_name,
> + .get_group_pins = at91_get_group_pins,
> + .pin_dbg_show = at91_pin_dbg_show,
> + .dt_node_to_map = at91_dt_node_to_map,
> + .dt_free_map = at91_dt_free_map,
> +};
> +
> +static void __iomem * pin_to_controller(struct at91_pinctrl *info,
> + unsigned int bank)
> +{
> + return gpio_chips[bank]->regbase;
> +}
> +
> +static inline int pin_to_bank(unsigned pin)
> +{
> + return pin /= MAX_NB_GPIO_PER_BANK;
> +}
> +
> +static unsigned pin_to_mask(unsigned int pin)
> +{
> + return 1 << pin;
> +}
> +
> +static void at91_mux_disable_interrupt(void __iomem *pio, unsigned mask)
> +{
> + writel_relaxed(mask, pio + PIO_IDR);
> +}
> +
> +static unsigned at91_mux_get_pullup(void __iomem *pio, unsigned pin)
> +{
> + return (readl_relaxed(pio + PIO_PUSR) >> pin) & 0x1;
> +}
> +
> +static void at91_mux_set_pullup(void __iomem *pio, unsigned mask, bool on)
> +{
> + writel_relaxed(mask, pio + (on ? PIO_PUER : PIO_PUDR));
> +}
> +
> +static unsigned at91_mux_get_multidrive(void __iomem *pio, unsigned pin)
> +{
> + return (readl_relaxed(pio + PIO_MDSR) >> pin) & 0x1;
> +}
> +
> +static void at91_mux_set_multidrive(void __iomem *pio, unsigned mask, bool on)
> +{
> + writel_relaxed(mask, pio + (on ? PIO_MDER : PIO_MDDR));
> +}
> +
> +static void at91_mux_set_A_periph(void __iomem *pio, unsigned mask)
> +{
> + writel_relaxed(mask, pio + PIO_ASR);
> +}
> +
> +static void at91_mux_set_B_periph(void __iomem *pio, unsigned mask)
> +{
> + writel_relaxed(mask, pio + PIO_BSR);
> +}
> +
> +static void at91_mux_pio3_set_A_periph(void __iomem *pio, unsigned mask)
> +{
> +
> + writel_relaxed(readl_relaxed(pio + PIO_ABCDSR1) & ~mask,
> + pio + PIO_ABCDSR1);
> + writel_relaxed(readl_relaxed(pio + PIO_ABCDSR2) & ~mask,
> + pio + PIO_ABCDSR2);
> +}
> +
> +static void at91_mux_pio3_set_B_periph(void __iomem *pio, unsigned mask)
> +{
> + writel_relaxed(readl_relaxed(pio + PIO_ABCDSR1) | mask,
> + pio + PIO_ABCDSR1);
> + writel_relaxed(readl_relaxed(pio + PIO_ABCDSR2) & ~mask,
> + pio + PIO_ABCDSR2);
> +}
> +
> +static void at91_mux_pio3_set_C_periph(void __iomem *pio, unsigned mask)
> +{
> + writel_relaxed(readl_relaxed(pio + PIO_ABCDSR1) & ~mask, pio + PIO_ABCDSR1);
> + writel_relaxed(readl_relaxed(pio + PIO_ABCDSR2) | mask, pio + PIO_ABCDSR2);
> +}
> +
> +static void at91_mux_pio3_set_D_periph(void __iomem *pio, unsigned mask)
> +{
> + writel_relaxed(readl_relaxed(pio + PIO_ABCDSR1) | mask, pio + PIO_ABCDSR1);
> + writel_relaxed(readl_relaxed(pio + PIO_ABCDSR2) | mask, pio + PIO_ABCDSR2);
> +}
> +
> +static enum at91_mux at91_mux_pio3_get_periph(void __iomem *pio, unsigned mask)
> +{
> + unsigned select;
> +
> + if (readl_relaxed(pio + PIO_PSR) & mask)
> + return AT91_MUX_GPIO;
> +
> + select = !!(readl_relaxed(pio + PIO_ABCDSR1) & mask);
> + select |= (!!(readl_relaxed(pio + PIO_ABCDSR2) & mask) << 1);
> +
> + return select + 1;
> +}
> +
> +static enum at91_mux at91_mux_get_periph(void __iomem *pio, unsigned mask)
> +{
> + unsigned select;
> +
> + if (readl_relaxed(pio + PIO_PSR) & mask)
> + return AT91_MUX_GPIO;
> +
> + select = readl_relaxed(pio + PIO_ABSR) & mask;
> +
> + return select + 1;
> +}
> +
> +static struct at91_pinctrl_mux_ops at91rm9200_ops = {
> + .get_periph = at91_mux_get_periph,
> + .mux_A_periph = at91_mux_set_A_periph,
> + .mux_B_periph = at91_mux_set_B_periph,
> + .irq_type = gpio_irq_type,
> +};
> +
> +static struct at91_pinctrl_mux_ops at91sam9x5_ops = {
> + .get_periph = at91_mux_pio3_get_periph,
> + .mux_A_periph = at91_mux_pio3_set_A_periph,
> + .mux_B_periph = at91_mux_pio3_set_B_periph,
> + .mux_C_periph = at91_mux_pio3_set_C_periph,
> + .mux_D_periph = at91_mux_pio3_set_D_periph,
> + .irq_type = alt_gpio_irq_type,
> +};
> +
> +static void at91_pin_dbg(const struct device *dev, const struct at91_pmx_pin *pin)
> +{
> + if (pin->mux) {
> + dev_dbg(dev, "pio%c%d configured as periph%c with conf = 0x%lu\n",
> + pin->bank + 'A', pin->pin, pin->mux - 1 + 'A', pin->conf);
> + } else {
> + dev_dbg(dev, "pio%c%d configured as gpio with conf = 0x%lu\n",
> + pin->bank + 'A', pin->pin, pin->conf);
> + }
> +}
> +
> +static int pin_check_config(struct at91_pinctrl *info, const char* name,
> + int index, const struct at91_pmx_pin *pin)
> +{
> + int mux;
> +
> + /* check if it's a valid config */
> + if (pin->bank >= info->nbanks) {
> + dev_err(info->dev, "%s: pin conf %d bank_id %d >= nbanks %d\n",
> + name, index, pin->bank, info->nbanks);
> + return -EINVAL;
> + }
> +
> + if (pin->pin >= MAX_NB_GPIO_PER_BANK) {
> + dev_err(info->dev, "%s: pin conf %d pin_bank_id %d >= %d\n",
> + name, index, pin->pin, MAX_NB_GPIO_PER_BANK);
> + return -EINVAL;
> + }
> +
> + if (!pin->mux)
> + return 0;
> +
> + mux = pin->mux - 1;
> +
> + if (mux >= info->nmux) {
> + dev_err(info->dev, "%s: pin conf %d mux_id %d >= nmux %d\n",
> + name, index, mux, info->nmux);
> + return -EINVAL;
> + }
> +
> + if (!(info->mux_mask[pin->bank * info->nmux + mux] & 1 << pin->pin)) {
> + dev_err(info->dev, "%s: pin conf %d mux_id %d not supported for pio%c%d\n",
> + name, index, mux, pin->bank + 'A', pin->pin);
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static void at91_mux_gpio_disable(void __iomem *pio, unsigned mask)
> +{
> + writel_relaxed(mask, pio + PIO_PDR);
> +}
> +
> +static void at91_mux_gpio_enable(void __iomem *pio, unsigned mask, bool input)
> +{
> + writel_relaxed(mask, pio + PIO_PER);
> + writel_relaxed(mask, pio + (input ? PIO_ODR : PIO_OER));
> +}
> +
> +static int at91_pmx_enable(struct pinctrl_dev *pctldev, unsigned selector,
> + unsigned group)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> + const struct at91_pmx_pin *pins_conf = info->groups[group].pins_conf;
> + const struct at91_pmx_pin *pin;
> + uint32_t npins = info->groups[group].npins;
> + int i, ret;
> + unsigned mask;
> + void __iomem *pio;
> +
> + dev_dbg(info->dev, "enable function %s group %s\n",
> + info->functions[selector].name, info->groups[group].name);
> +
> + /* first check that all the pins of the group are valid with a valid
> + * paramter */
> + for (i = 0; i < npins; i++) {
> + pin = &pins_conf[i];
> + ret = pin_check_config(info, info->groups[group].name, i, pin);
> + if (ret)
> + return ret;
> + }
> +
> + for (i = 0; i < npins; i++) {
> + pin = &pins_conf[i];
> + at91_pin_dbg(info->dev, pin);
> + pio = pin_to_controller(info, pin->bank);
> + mask = pin_to_mask(pin->pin);
> + at91_mux_disable_interrupt(pio, mask);
> + switch(pin->mux) {
> + case AT91_MUX_GPIO:
> + at91_mux_gpio_enable(pio, mask, 1);
> + break;
> + case AT91_MUX_PERIPH_A:
> + info->ops->mux_A_periph(pio, mask);
> + break;
> + case AT91_MUX_PERIPH_B:
> + info->ops->mux_B_periph(pio, mask);
> + break;
> + case AT91_MUX_PERIPH_C:
> + if (!info->ops->mux_C_periph)
> + return -EINVAL;
> + info->ops->mux_C_periph(pio, mask);
> + break;
> + case AT91_MUX_PERIPH_D:
> + if (!info->ops->mux_D_periph)
> + return -EINVAL;
> + info->ops->mux_D_periph(pio, mask);
> + break;
> + }
> + if (pin->mux)
> + at91_mux_gpio_disable(pio, mask);
> + }
> +
> + return 0;
> +}
> +
> +static void at91_pmx_disable(struct pinctrl_dev *pctldev, unsigned selector,
> + unsigned group)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> + const struct at91_pmx_pin *pins_conf = info->groups[group].pins_conf;
> + const struct at91_pmx_pin *pin;
> + uint32_t npins = info->groups[group].npins;
> + int i;
> + unsigned mask;
> + void __iomem *pio;
> +
> + for (i = 0; i < npins; i++) {
> + pin = &pins_conf[i];
> + at91_pin_dbg(info->dev, pin);
> + pio = pin_to_controller(info, pin->bank);
> + mask = pin_to_mask(pin->pin);
> + at91_mux_gpio_enable(pio, mask, 1);
> + }
> +}
> +
> +static int at91_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> +
> + return info->nfunctions;
> +}
> +
> +static const char *at91_pmx_get_func_name(struct pinctrl_dev *pctldev,
> + unsigned selector)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> +
> + return info->functions[selector].name;
> +}
> +
> +static int at91_pmx_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
> + const char * const **groups,
> + unsigned * const num_groups)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> +
> + *groups = info->functions[selector].groups;
> + *num_groups = info->functions[selector].ngroups;
> +
> + return 0;
> +}
> +
> +int at91_gpio_request_enable(struct pinctrl_dev *pctldev,
> + struct pinctrl_gpio_range *range,
> + unsigned offset)
> +{
> + struct at91_pinctrl *npct = pinctrl_dev_get_drvdata(pctldev);
> + struct at91_gpio_chip *at91_chip;
> + struct gpio_chip *chip;
> + unsigned mask;
> +
> + if (!range) {
> + dev_err(npct->dev, "invalid range\n");
> + return -EINVAL;
> + }
> + if (!range->gc) {
> + dev_err(npct->dev, "missing GPIO chip in range\n");
> + return -EINVAL;
> + }
> + chip = range->gc;
> + at91_chip = container_of(chip, struct at91_gpio_chip, chip);
> +
> + dev_dbg(npct->dev, "enable pin %u as GPIO\n", offset);
> +
> + mask = 1 << (offset - chip->base);
> +
> + dev_dbg(npct->dev, "enable pin %u as PIO%c%d 0x%x\n",
> + offset, 'A' + range->id, offset - chip->base, mask);
> +
> + writel_relaxed(mask, at91_chip->regbase + PIO_PER);
> +
> + return 0;
> +}
> +
> +void at91_gpio_disable_free(struct pinctrl_dev *pctldev,
> + struct pinctrl_gpio_range *range,
> + unsigned offset)
> +{
> + struct at91_pinctrl *npct = pinctrl_dev_get_drvdata(pctldev);
> +
> + dev_dbg(npct->dev, "disable pin %u as GPIO\n", offset);
> + /* Set the pin to some default state, GPIO is usually default */
> +}
> +
> +static struct pinmux_ops at91_pmx_ops = {
> + .get_functions_count = at91_pmx_get_funcs_count,
> + .get_function_name = at91_pmx_get_func_name,
> + .get_function_groups = at91_pmx_get_groups,
> + .enable = at91_pmx_enable,
> + .disable = at91_pmx_disable,
> + .gpio_request_enable = at91_gpio_request_enable,
> + .gpio_disable_free = at91_gpio_disable_free,
> +};
> +
> +static int at91_pinconf_get(struct pinctrl_dev *pctldev,
> + unsigned pin_id, unsigned long *config)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> + void __iomem *pio;
> + unsigned pin;
> +
> + dev_dbg(info->dev, "%s:%d, pin_id=%d, config=0x%lx", __func__, __LINE__, pin_id, *config);
> + pio = pin_to_controller(info, pin_to_bank(pin_id));
> + pin = pin_id % MAX_NB_GPIO_PER_BANK;
> +
> + if (at91_mux_get_multidrive(pio, pin))
> + *config |= MULTI_DRIVE;
> +
> + if (at91_mux_get_pullup(pio, pin))
> + *config |= PULL_UP;
> +
> + return 0;
> +}
> +
> +static int at91_pinconf_set(struct pinctrl_dev *pctldev,
> + unsigned pin_id, unsigned long config)
> +{
> + struct at91_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> + unsigned mask;
> + void __iomem *pio;
> +
> + dev_dbg(info->dev, "%s:%d, pin_id=%d, config=0x%lx", __func__, __LINE__, pin_id, config);
> + pio = pin_to_controller(info, pin_to_bank(pin_id));
> + mask = pin_to_mask(pin_id % MAX_NB_GPIO_PER_BANK);
> +
> + at91_mux_set_pullup(pio, mask, config & PULL_UP);
> + at91_mux_set_multidrive(pio, mask, config & MULTI_DRIVE);
> + return 0;
> +}
> +
> +static void at91_pinconf_dbg_show(struct pinctrl_dev *pctldev,
> + struct seq_file *s, unsigned pin_id)
> +{
> +
> +}
> +
> +static void at91_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
> + struct seq_file *s, unsigned group)
> +{
> +}
> +
> +struct pinconf_ops at91_pinconf_ops = {
> + .pin_config_get = at91_pinconf_get,
> + .pin_config_set = at91_pinconf_set,
> + .pin_config_dbg_show = at91_pinconf_dbg_show,
> + .pin_config_group_dbg_show = at91_pinconf_group_dbg_show,
> +};
> +
> +static struct pinctrl_desc at91_pinctrl_desc = {
> + .pctlops = &at91_pctrl_ops,
> + .pmxops = &at91_pmx_ops,
> + .confops = &at91_pinconf_ops,
> + .owner = THIS_MODULE,
> +};
> +
> +static const char *gpio_compat = "atmel,at91rm9200-gpio";
> +
> +static void __devinit at91_pinctrl_child_count(struct at91_pinctrl *info,
> + struct device_node *np)
> +{
> + struct device_node *child;
> +
> + for_each_child_of_node(np, child) {
> + if (of_device_is_compatible(child, gpio_compat)) {
> + info->nbanks++;
> + } else {
> + info->nfunctions++;
> + info->ngroups += of_get_child_count(child);
> + }
> + }
> +}
> +
> +static int __devinit at91_pinctrl_mux_mask(struct at91_pinctrl *info,
> + struct device_node *np)
> +{
> + int ret = 0;
> + int size;
> + const const __be32 *list;
> +
> + list = of_get_property(np, "atmel,mux-mask", &size);
> + if (!list) {
> + dev_err(info->dev, "can not read the mux-mask of %d\n", size);
> + return -EINVAL;
> + }
> +
> + size /= sizeof(*list);
> + if (!size || size % info->nbanks) {
> + dev_err(info->dev, "wrong mux mask array should be by %d\n", info->nbanks);
> + return -EINVAL;
> + }
> + info->nmux = size / info->nbanks;
> +
> + info->mux_mask = devm_kzalloc(info->dev, sizeof(u32) * size, GFP_KERNEL);
> + if (!info->mux_mask) {
> + dev_err(info->dev, "could not alloc mux_mask\n");
> + return -ENOMEM;
> + }
> +
> + ret = of_property_read_u32_array(np, "atmel,mux-mask",
> + info->mux_mask, size);
> + if (ret)
> + dev_err(info->dev, "can not read the mux-mask of %d\n", size);
> + return ret;
> +}
> +
> +static int __devinit at91_pinctrl_parse_groups(struct device_node *np,
> + struct at91_pin_group *grp,
> + struct at91_pinctrl *info,
> + u32 index)
> +{
> + struct at91_pmx_pin *pin;
> + int size;
> + const const __be32 *list;
> + int i, j;
> +
> + dev_dbg(info->dev, "group(%d): %s\n", index, np->name);
> +
> + /* Initialise group */
> + grp->name = np->name;
> +
> + /*
> + * the binding format is fsl,pins = <bank pin mux CONFIG ...>,
> + * do sanity check and calculate pins number
> + */
> + list = of_get_property(np, "atmel,pins", &size);
> + /* we do not check return since it's safe node passed down */
> + size /= sizeof(*list);
> + if (!size || size % 4) {
> + dev_err(info->dev, "wrong pins number or pins and configs should be by 4\n");
> + return -EINVAL;
> + }
> +
> + grp->npins = size / 4;
> + pin = grp->pins_conf = devm_kzalloc(info->dev, grp->npins * sizeof(struct at91_pmx_pin),
> + GFP_KERNEL);
> + grp->pins = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned int),
> + GFP_KERNEL);
> + if (!grp->pins_conf || !grp->pins)
> + return -ENOMEM;
> +
> + for (i = 0, j = 0; i < size; i += 4, j++) {
> + pin->bank = be32_to_cpu(*list++);
> + pin->pin = be32_to_cpu(*list++);
> + grp->pins[j] = pin->bank * MAX_NB_GPIO_PER_BANK + pin->pin;
> + pin->mux = be32_to_cpu(*list++);
> + pin->conf = be32_to_cpu(*list++);
> +
> + at91_pin_dbg(info->dev, pin);
> + pin++;
> + }
> +
> + return 0;
> +}
> +
> +static int __devinit at91_pinctrl_parse_functions(struct device_node *np,
> + struct at91_pinctrl *info, u32 index)
> +{
> + struct device_node *child;
> + struct at91_pmx_func *func;
> + struct at91_pin_group *grp;
> + int ret;
> + static u32 grp_index;
> + u32 i = 0;
> +
> + dev_dbg(info->dev, "parse function(%d): %s\n", index, np->name);
> +
> + func = &info->functions[index];
> +
> + /* Initialise function */
> + func->name = np->name;
> + func->ngroups = of_get_child_count(np);
> + if (func->ngroups <= 0) {
> + dev_err(info->dev, "no groups defined\n");
> + return -EINVAL;
> + }
> + func->groups = devm_kzalloc(info->dev,
> + func->ngroups * sizeof(char *), GFP_KERNEL);
> + if (!func->groups)
> + return -ENOMEM;
> +
> + for_each_child_of_node(np, child) {
> + func->groups[i] = child->name;
> + grp = &info->groups[grp_index++];
> + ret = at91_pinctrl_parse_groups(child, grp, info, i++);
> + if (ret)
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static struct of_device_id at91_pinctrl_of_match[] __devinitdata = {
> + { .compatible = "atmel,at91rm9200-pinctrl", .data = &at91rm9200_ops },
> + { .compatible = "atmel,at91sam9x5-pinctrl", .data = &at91sam9x5_ops },
> + { /* sentinel */ }
> +};
> +
> +static int __devinit at91_pinctrl_probe_dt(struct platform_device *pdev,
> + struct at91_pinctrl *info)
> +{
> + int ret = 0;
> + int i, j;
> + uint32_t *tmp;
> + struct device_node *np = pdev->dev.of_node;
> + struct device_node *child;
> +
> + if (!np)
> + return -ENODEV;
> +
> + info->dev = &pdev->dev;
> + info->ops =
> + of_match_device(at91_pinctrl_of_match, &pdev->dev)->data;
> + at91_pinctrl_child_count(info, np);
> +
> + if (info->nbanks < 1) {
> + dev_err(&pdev->dev, "you need to specify atleast one gpio-controller\n");
> + return -EINVAL;
> + }
> +
> + ret = at91_pinctrl_mux_mask(info, np);
> + if (ret)
> + return ret;
> +
> + dev_dbg(&pdev->dev, "nmux = %d\n", info->nmux);
> +
> + dev_dbg(&pdev->dev, "mux-mask\n");
> + tmp = info->mux_mask;
> + for (i = 0; i < info->nbanks; i++) {
> + for (j = 0; j < info->nmux; j++, tmp++) {
> + dev_dbg(&pdev->dev, "%d:%d\t0x%x\n", i, j, tmp[0]);
> + }
> + }
> +
> + dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
> + dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
> + info->functions = devm_kzalloc(&pdev->dev, info->nfunctions * sizeof(struct at91_pmx_func),
> + GFP_KERNEL);
> + if (!info->functions)
> + return -ENOMEM;
> +
> + info->groups = devm_kzalloc(&pdev->dev, info->ngroups * sizeof(struct at91_pin_group),
> + GFP_KERNEL);
> + if (!info->groups)
> + return -ENOMEM;
> +
> + dev_dbg(&pdev->dev, "nbanks = %d\n", info->nbanks);
> + dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
> + dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
> +
> + i = 0;
> +
> + for_each_child_of_node(np, child) {
> + if (of_device_is_compatible(child, gpio_compat))
> + continue;
> + ret = at91_pinctrl_parse_functions(child, info, i++);
> + if (ret) {
> + dev_err(&pdev->dev, "failed to parse function\n");
> + return ret;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int __devinit at91_pinctrl_probe(struct platform_device *pdev)
> +{
> + struct at91_pinctrl *info;
> + struct pinctrl_pin_desc *pdesc;
> + int ret, i, j ,k;
> +
> + info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
> + if (!info)
> + return -ENOMEM;
> +
> + ret = at91_pinctrl_probe_dt(pdev, info);
> + if (ret)
> + return ret;
> +
> + /*
> + * We need all the GPIO drivers to probe FIRST, or we will not be able
> + * to obtain references to the struct gpio_chip * for them, and we
> + * need this to proceed.
> + */
> + for (i = 0; i < info->nbanks; i++) {
> + if (!gpio_chips[i]) {
> + dev_warn(&pdev->dev, "GPIO chip %d not registered yet\n", i);
> + devm_kfree(&pdev->dev, info);
> + return -EPROBE_DEFER;
> + }
> + }
> +
> + at91_pinctrl_desc.name = dev_name(&pdev->dev);
> + at91_pinctrl_desc.npins = info->nbanks * MAX_NB_GPIO_PER_BANK;
> + at91_pinctrl_desc.pins = pdesc =
> + devm_kzalloc(&pdev->dev, sizeof(*pdesc) * at91_pinctrl_desc.npins, GFP_KERNEL);
> +
> + if (!at91_pinctrl_desc.pins)
> + return -ENOMEM;
> +
> + for (i = 0 , k = 0; i < info->nbanks; i++) {
> + for (j = 0; j < MAX_NB_GPIO_PER_BANK; j++, k++) {
> + pdesc->number = k;
> + pdesc->name = kasprintf(GFP_KERNEL, "pio%c%d", i + 'A', j);
> + pdesc++;
> + }
> + }
> +
> + platform_set_drvdata(pdev, info);
> + info->pctl = pinctrl_register(&at91_pinctrl_desc, &pdev->dev, info);
> +
> + if (!info->pctl) {
> + dev_err(&pdev->dev, "could not register AT91 pinctrl driver\n");
> + ret = -EINVAL;
> + goto err;
> + }
> +
> + /* We will handle a range of GPIO pins */
> + for (i = 0; i < info->nbanks; i++)
> + pinctrl_add_gpio_range(info->pctl, &gpio_chips[i]->range);
> +
> + dev_info(&pdev->dev, "initialized AT91 pinctrl driver\n");
> +
> + return 0;
> +
> +err:
> + return ret;
> +}
> +
> +int __devexit at91_pinctrl_remove(struct platform_device *pdev)
> +{
> + struct at91_pinctrl *info = platform_get_drvdata(pdev);
> +
> + pinctrl_unregister(info->pctl);
> +
> + return 0;
> +}
> +
> +static int at91_gpio_request(struct gpio_chip *chip, unsigned offset)
> +{
> + /*
> + * Map back to global GPIO space and request muxing, the direction
> + * parameter does not matter for this controller.
> + */
> + int gpio = chip->base + offset;
> + int bank = chip->base / chip->ngpio;
> +
> + dev_dbg(chip->dev, "%s:%d pio%c%d(%d)\n", __func__, __LINE__,
> + 'A' + bank, offset, gpio);
> +
> + return pinctrl_request_gpio(gpio);
> +}
> +
> +static void at91_gpio_free(struct gpio_chip *chip, unsigned offset)
> +{
> + int gpio = chip->base + offset;
> +
> + pinctrl_free_gpio(gpio);
> +}
> +
> +static int at91_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
> +{
> + struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
> + void __iomem *pio = at91_gpio->regbase;
> + unsigned mask = 1 << offset;
> +
> + writel_relaxed(mask, pio + PIO_ODR);
> + return 0;
> +}
> +
> +static int at91_gpio_get(struct gpio_chip *chip, unsigned offset)
> +{
> + struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
> + void __iomem *pio = at91_gpio->regbase;
> + unsigned mask = 1 << offset;
> + u32 pdsr;
> +
> + pdsr = readl_relaxed(pio + PIO_PDSR);
> + return (pdsr & mask) != 0;
> +}
> +
> +static void at91_gpio_set(struct gpio_chip *chip, unsigned offset,
> + int val)
> +{
> + struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
> + void __iomem *pio = at91_gpio->regbase;
> + unsigned mask = 1 << offset;
> +
> + writel_relaxed(mask, pio + (val ? PIO_SODR : PIO_CODR));
> +}
> +
> +static int at91_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
> + int val)
> +{
> + struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
> + void __iomem *pio = at91_gpio->regbase;
> + unsigned mask = 1 << offset;
> +
> + writel_relaxed(mask, pio + (val ? PIO_SODR : PIO_CODR));
> + writel_relaxed(mask, pio + PIO_OER);
> +
> + return 0;
> +}
> +
> +static int at91_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
> +{
> + struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
> + int virq;
> +
> + if (offset < chip->ngpio)
> + virq = irq_create_mapping(at91_gpio->domain, offset);
> + else
> + virq = -ENXIO;
> +
> + dev_dbg(chip->dev, "%s: request IRQ for GPIO %d, return %d\n",
> + chip->label, offset + chip->base, virq);
> + return virq;
> +}
> +
> +#ifdef CONFIG_DEBUG_FS
> +static void at91_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
> +{
> + enum at91_mux mode;
> + int i;
> + struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
> + void __iomem *pio = at91_gpio->regbase;
> +
> + for (i = 0; i < chip->ngpio; i++) {
> + unsigned pin = chip->base + i;
> + unsigned mask = pin_to_mask(pin);
> + const char *gpio_label;
> + u32 pdsr;
> +
> + gpio_label = gpiochip_is_requested(chip, i);
> + if (!gpio_label)
> + continue;
> + mode = at91_gpio->ops->get_periph(pio, mask);
> + seq_printf(s, "[%s] GPIO%s%d: ",
> + gpio_label, chip->label, i);
> + if (mode == AT91_MUX_GPIO) {
> + pdsr = readl_relaxed(pio + PIO_PDSR);
> +
> + seq_printf(s, "[gpio] %s\n",
> + pdsr & mask ?
> + "set" : "clear");
> + } else {
> + seq_printf(s, "[periph %c]\n",
> + mode + 'A' - 1);
> + }
> + }
> +}
> +#else
> +#define at91_gpio_dbg_show NULL
> +#endif
> +
> +/* Several AIC controller irqs are dispatched through this GPIO handler.
> + * To use any AT91_PIN_* as an externally triggered IRQ, first call
> + * at91_set_gpio_input() then maybe enable its glitch filter.
> + * Then just request_irq() with the pin ID; it works like any ARM IRQ
> + * handler.
> + * First implementation always triggers on rising and falling edges
> + * whereas the newer PIO3 can be additionally configured to trigger on
> + * level, edge with any polarity.
> + *
> + * Alternatively, certain pins may be used directly as IRQ0..IRQ6 after
> + * configuring them with at91_set_a_periph() or at91_set_b_periph().
> + * IRQ0..IRQ6 should be configurable, e.g. level vs edge triggering.
> + */
> +
> +static void gpio_irq_mask(struct irq_data *d)
> +{
> + struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
> + void __iomem *pio = at91_gpio->regbase;
> + unsigned mask = 1 << d->hwirq;
> +
> + if (pio)
> + writel_relaxed(mask, pio + PIO_IDR);
> +}
> +
> +static void gpio_irq_unmask(struct irq_data *d)
> +{
> + struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
> + void __iomem *pio = at91_gpio->regbase;
> + unsigned mask = 1 << d->hwirq;
> +
> + if (pio)
> + writel_relaxed(mask, pio + PIO_IER);
> +}
> +
> +static int gpio_irq_type(struct irq_data *d, unsigned type)
> +{
> + switch (type) {
> + case IRQ_TYPE_NONE:
> + case IRQ_TYPE_EDGE_BOTH:
> + return 0;
> + default:
> + return -EINVAL;
> + }
> +}
> +
> +/* Alternate irq type for PIO3 support */
> +static int alt_gpio_irq_type(struct irq_data *d, unsigned type)
> +{
> + struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
> + void __iomem *pio = at91_gpio->regbase;
> + unsigned mask = 1 << d->hwirq;
> +
> + switch (type) {
> + case IRQ_TYPE_EDGE_RISING:
> + writel_relaxed(mask, pio + PIO_ESR);
> + writel_relaxed(mask, pio + PIO_REHLSR);
> + break;
> + case IRQ_TYPE_EDGE_FALLING:
> + writel_relaxed(mask, pio + PIO_ESR);
> + writel_relaxed(mask, pio + PIO_FELLSR);
> + break;
> + case IRQ_TYPE_LEVEL_LOW:
> + writel_relaxed(mask, pio + PIO_LSR);
> + writel_relaxed(mask, pio + PIO_FELLSR);
> + break;
> + case IRQ_TYPE_LEVEL_HIGH:
> + writel_relaxed(mask, pio + PIO_LSR);
> + writel_relaxed(mask, pio + PIO_REHLSR);
> + break;
> + case IRQ_TYPE_EDGE_BOTH:
> + /*
> + * disable additional interrupt modes:
> + * fall back to default behavior
> + */
> + writel_relaxed(mask, pio + PIO_AIMDR);
> + return 0;
> + case IRQ_TYPE_NONE:
> + default:
> + pr_warn("AT91: No type for irq %d\n", gpio_to_irq(d->irq));
> + return -EINVAL;
> + }
> +
> + /* enable additional interrupt modes */
> + writel_relaxed(mask, pio + PIO_AIMER);
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_PM
> +static int gpio_irq_set_wake(struct irq_data *d, unsigned state)
> +{
> + struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
> + unsigned bank = at91_gpio->pioc_idx;
> +
> + if (unlikely(bank >= MAX_GPIO_BANKS))
> + return -EINVAL;
> +
> + irq_set_irq_wake(at91_gpio->pioc_virq, state);
> +
> + return 0;
> +}
> +#else
> +#define gpio_irq_set_wake NULL
> +#endif
> +
> +static struct irq_chip gpio_irqchip = {
> + .name = "GPIO",
> + .irq_disable = gpio_irq_mask,
> + .irq_mask = gpio_irq_mask,
> + .irq_unmask = gpio_irq_unmask,
> + /* .irq_set_type is set dynamically */
> + .irq_set_wake = gpio_irq_set_wake,
> +};
> +
> +static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
> +{
> + struct irq_chip *chip = irq_desc_get_chip(desc);
> + struct irq_data *idata = irq_desc_get_irq_data(desc);
> + struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(idata);
> + void __iomem *pio = at91_gpio->regbase;
> + unsigned long isr;
> + int n;
> +
> + chained_irq_enter(chip, desc);
> + for (;;) {
> + /* Reading ISR acks pending (edge triggered) GPIO interrupts.
> + * When there none are pending, we're finished unless we need
> + * to process multiple banks (like ID_PIOCDE on sam9263).
> + */
> + isr = readl_relaxed(pio + PIO_ISR) & readl_relaxed(pio + PIO_IMR);
> + if (!isr) {
> + if (!at91_gpio->next)
> + break;
> + at91_gpio = at91_gpio->next;
> + pio = at91_gpio->regbase;
> + continue;
> + }
> +
> + n = find_first_bit(&isr, BITS_PER_LONG);
> + while (n < BITS_PER_LONG) {
> + generic_handle_irq(irq_find_mapping(at91_gpio->domain, n));
> + n = find_next_bit(&isr, BITS_PER_LONG, n + 1);
> + }
> + }
> + chained_irq_exit(chip, desc);
> + /* now it may re-trigger */
> +}
> +
> +/*
> + * This lock class tells lockdep that GPIO irqs are in a different
> + * category than their parents, so it won't report false recursion.
> + */
> +static struct lock_class_key gpio_lock_class;
> +
> +static int at91_gpio_irq_map(struct irq_domain *h, unsigned int virq,
> + irq_hw_number_t hw)
> +{
> + struct at91_gpio_chip *at91_gpio = h->host_data;
> +
> + irq_set_lockdep_class(virq, &gpio_lock_class);
> +
> + /*
> + * Can use the "simple" and not "edge" handler since it's
> + * shorter, and the AIC handles interrupts sanely.
> + */
> + irq_set_chip_and_handler(virq, &gpio_irqchip,
> + handle_simple_irq);
> + set_irq_flags(virq, IRQF_VALID);
> + irq_set_chip_data(virq, at91_gpio);
> +
> + return 0;
> +}
> +
> +static struct irq_domain_ops at91_gpio_ops = {
> + .map = at91_gpio_irq_map,
> + .xlate = irq_domain_xlate_twocell,
> +};
> +
> +static int at91_gpio_of_irq_setup(struct device_node *node,
> + struct at91_gpio_chip *at91_gpio)
> +{
> + struct at91_gpio_chip *prev = NULL;
> + struct irq_data *d = irq_get_irq_data(at91_gpio->pioc_virq);
> +
> + at91_gpio->pioc_hwirq = irqd_to_hwirq(d);
> +
> + /* Setup proper .irq_set_type function */
> + gpio_irqchip.irq_set_type = at91_gpio->ops->irq_type;
> +
> + /* Disable irqs of this PIO controller */
> + writel_relaxed(~0, at91_gpio->regbase + PIO_IDR);
> +
> + /* Setup irq domain */
> + at91_gpio->domain = irq_domain_add_linear(node, at91_gpio->chip.ngpio,
> + &at91_gpio_ops, at91_gpio);
> + if (!at91_gpio->domain)
> + panic("at91_gpio.%d: couldn't allocate irq domain (DT).\n",
> + at91_gpio->pioc_idx);
> +
> + /* Setup chained handler */
> + if (at91_gpio->pioc_idx)
> + prev = gpio_chips[at91_gpio->pioc_idx - 1];
> +
> + /* The toplevel handler handles one bank of GPIOs, except
> + * on some SoC it can handles up to three...
> + * We only set up the handler for the first of the list.
> + */
> + if (prev && prev->next == at91_gpio)
> + return 0;
> +
> + irq_set_chip_data(at91_gpio->pioc_virq, at91_gpio);
> + irq_set_chained_handler(at91_gpio->pioc_virq, gpio_irq_handler);
> +
> + return 0;
> +}
> +
> +/* This structure is replicated for each GPIO block allocated at probe time */
> +static struct gpio_chip at91_gpio_template = {
> + .request = at91_gpio_request,
> + .free = at91_gpio_free,
> + .direction_input = at91_gpio_direction_input,
> + .get = at91_gpio_get,
> + .direction_output = at91_gpio_direction_output,
> + .set = at91_gpio_set,
> + .to_irq = at91_gpio_to_irq,
> + .dbg_show = at91_gpio_dbg_show,
> + .can_sleep = 0,
> + .ngpio = MAX_NB_GPIO_PER_BANK,
> +};
> +
> +static void __devinit at91_gpio_probe_fixup(void)
> +{
> + unsigned i;
> + struct at91_gpio_chip *at91_gpio, *last = NULL;
> +
> + for (i = 0; i < gpio_banks; i++) {
> + at91_gpio = gpio_chips[i];
> +
> + /*
> + * GPIO controller are grouped on some SoC:
> + * PIOC, PIOD and PIOE can share the same IRQ line
> + */
> + if (last && last->pioc_virq == at91_gpio->pioc_virq)
> + last->next = at91_gpio;
> + last = at91_gpio;
> + }
> +}
> +
> +static struct of_device_id at91_gpio_of_match[] __devinitdata = {
> + { .compatible = "atmel,at91rm9200-gpio", .data = &at91rm9200_ops },
> + { .compatible = "atmel,at91sam9x5-gpio", .data = &at91sam9x5_ops, },
> + { /* sentinel */ }
> +};
> +
> +static int __devinit at91_gpio_probe(struct platform_device *pdev)
> +{
> + struct device_node *np = pdev->dev.of_node;
> + struct resource *res;
> + struct at91_gpio_chip *at91_chip = NULL;
> + struct gpio_chip *chip;
> + struct pinctrl_gpio_range *range;
> + int ret = 0;
> + int irq;
> + int alias_idx = of_alias_get_id(np, "gpio");
> + uint32_t ngpio;
> +
> + BUG_ON(alias_idx >= ARRAY_SIZE(gpio_chips));
> + if (gpio_chips[alias_idx]) {
> + ret = -EBUSY;
> + goto err;
> + }
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!res) {
> + ret = -ENOENT;
> + goto err;
> + }
> +
> + irq = platform_get_irq(pdev, 0);
> + if (irq < 0) {
> + ret = irq;
> + goto err;
> + }
> +
> + at91_chip = devm_kzalloc(&pdev->dev, sizeof(*at91_chip), GFP_KERNEL);
> + if (!at91_chip) {
> + ret = -ENOMEM;
> + goto err;
> + }
> +
> + at91_chip->regbase = devm_request_and_ioremap(&pdev->dev, res);
> + if (!at91_chip->regbase) {
> + dev_err(&pdev->dev, "failed to map registers, ignoring.\n");
> + ret = -EBUSY;
> + goto err;
> + }
> +
> + at91_chip->ops =
> + of_match_device(at91_gpio_of_match, &pdev->dev)->data;
> + at91_chip->pioc_virq = irq;
> + at91_chip->pioc_idx = alias_idx;
> +
> + at91_chip->clock = clk_get(&pdev->dev, NULL);
> + if (IS_ERR(at91_chip->clock)) {
> + dev_err(&pdev->dev, "failed to get clock, ignoring.\n");
> + goto err;
> + }
> +
> + if (clk_prepare(at91_chip->clock))
> + goto clk_prep_err;
> +
> + /* enable PIO controller's clock */
> + if (clk_enable(at91_chip->clock)) {
> + dev_err(&pdev->dev, "failed to enable clock, ignoring.\n");
> + goto clk_err;
> + }
> +
> + at91_chip->chip = at91_gpio_template;
> +
> + chip = &at91_chip->chip;
> + chip->of_node = np;
> + chip->label = dev_name(&pdev->dev);
> + chip->dev = &pdev->dev;
> + chip->owner = THIS_MODULE;
> + chip->base = alias_idx * MAX_NB_GPIO_PER_BANK;
> +
> + if (!of_property_read_u32(np, "#gpio-lines", &ngpio)) {
> + if (ngpio >= MAX_NB_GPIO_PER_BANK)
> + pr_err("at91_gpio.%d, gpio-nb >= %d failback to %d\n",
> + alias_idx, MAX_NB_GPIO_PER_BANK, MAX_NB_GPIO_PER_BANK);
> + else
> + chip->ngpio = ngpio;
> + }
> +
> + range = &at91_chip->range;
> + range->name = chip->label;
> + range->id = alias_idx;
> + range->pin_base = range->base = range->id * MAX_NB_GPIO_PER_BANK;
> +
> + range->npins = chip->ngpio;
> + range->gc = chip;
> +
> + ret = gpiochip_add(chip);
> + if (ret)
> + goto clk_err;
> +
> + gpio_chips[alias_idx] = at91_chip;
> + gpio_banks = max(gpio_banks, alias_idx + 1);
> +
> + at91_gpio_probe_fixup();
> +
> + at91_gpio_of_irq_setup(np, at91_chip);
> +
> + dev_info(&pdev->dev, "at address %p\n", at91_chip->regbase);
> +
> + return 0;
> +
> +clk_err:
> + clk_unprepare(at91_chip->clock);
> +clk_prep_err:
> + clk_put(at91_chip->clock);
> +err:
> + dev_err(&pdev->dev, "Failure %i for GPIO %i\n", ret, alias_idx);
> +
> + return ret;
> +}
> +
> +static struct platform_driver at91_gpio_driver = {
> + .driver = {
> + .name = "gpio-at91",
> + .owner = THIS_MODULE,
> + .of_match_table = of_match_ptr(at91_gpio_of_match),
> + },
> + .probe = at91_gpio_probe,
> +};
> +
> +static struct platform_driver at91_pinctrl_driver = {
> + .driver = {
> + .name = "pinctrl-at91",
> + .owner = THIS_MODULE,
> + .of_match_table = of_match_ptr(at91_pinctrl_of_match),
> + },
> + .probe = at91_pinctrl_probe,
> + .remove = __devexit_p(at91_pinctrl_remove),
> +};
> +
> +static int __init at91_pinctrl_init(void)
> +{
> + int ret;
> +
> + ret = platform_driver_register(&at91_gpio_driver);
> + if (ret)
> + return ret;
> + return platform_driver_register(&at91_pinctrl_driver);
> +}
> +arch_initcall(at91_pinctrl_init);
> +
> +static void __exit at91_pinctrl_exit(void)
> +{
> + platform_driver_unregister(&at91_pinctrl_driver);
> +}
> +
> +module_exit(at91_pinctrl_exit);
> +MODULE_AUTHOR("Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>");
> +MODULE_DESCRIPTION("Atmel AT91 pinctrl driver");
> +MODULE_LICENSE("GPL v2");
>
--
Nicolas Ferre
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH 08/16] arm: at91: dt: at91sam9 add pinctrl support
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (5 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 07/16] ARM: at91: add pinctrl support Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 09/16] arm: at91: dt: at91sam9 add serial " Jean-Christophe PLAGNIOL-VILLARD
` (7 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
.../bindings/pinctrl/atmel,at91-pinctrl.txt | 68 +++++++++++++++++---
arch/arm/boot/dts/at91sam9260.dtsi | 9 +++
arch/arm/boot/dts/at91sam9263.dtsi | 12 ++++
arch/arm/boot/dts/at91sam9g45.dtsi | 11 ++++
arch/arm/boot/dts/at91sam9n12.dtsi | 12 +++-
arch/arm/boot/dts/at91sam9x5.dtsi | 12 +++-
arch/arm/configs/at91_dt_defconfig | 1 +
arch/arm/mach-at91/at91sam9260.c | 3 +
arch/arm/mach-at91/at91sam9263.c | 5 ++
arch/arm/mach-at91/at91sam9g45.c | 6 ++
arch/arm/mach-at91/at91sam9n12.c | 11 ++--
arch/arm/mach-at91/at91sam9x5.c | 15 ++---
arch/arm/mach-at91/setup.c | 3 +-
drivers/pinctrl/pinctrl-at91.c | 2 +-
14 files changed, 140 insertions(+), 30 deletions(-)
diff --git a/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt
index 0296ef4..20a987e 100644
--- a/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt
@@ -22,6 +22,62 @@ Required properties for iomux controller:
- atmel,mux-mask: array of mask (periph per bank) to describe if a pin can be
configured in this periph mode. All the periph and bank need to be describe.
+How to create such array:
+
+Each column will represent the possible peripheral of the pinctrl
+Each line will represent a pio bank
+
+Take an example on the 9260
+Peripheral: 2 ( A and B)
+Bank: 3 (A, B and C)
+=>
+
+ /* A B */
+ 0xffffffff 0xffc00c3b /* pioA */
+ 0xffffffff 0x7fff3ccf /* pioB */
+ 0xffffffff 0x007fffff /* pioC */
+
+For each peripheral/bank we will descibe in a u32 if a pin can can be
+configured in it by putting 1 to the pin bit (1 << pin)
+
+Let's take the pioA on peripheral B
+From the datasheet Table 10-2.
+Peripheral B
+PA0 MCDB0
+PA1 MCCDB
+PA2
+PA3 MCDB3
+PA4 MCDB2
+PA5 MCDB1
+PA6
+PA7
+PA8
+PA9
+PA10 ETX2
+PA11 ETX3
+PA12
+PA13
+PA14
+PA15
+PA16
+PA17
+PA18
+PA19
+PA20
+PA21
+PA22 ETXER
+PA23 ETX2
+PA24 ETX3
+PA25 ERX2
+PA26 ERX3
+PA27 ERXCK
+PA28 ECRS
+PA29 ECOL
+PA30 RXD4
+PA31 TXD4
+
+=> 0xffc00c3b
+
Required properties for pin configuration node:
- atmel,pins: 4 integers array, represents a group of pins mux and config
setting. The format is atmel,pins = <PIN_BANK PIN_BANK_NUM PERIPH CONFIG>.
@@ -35,18 +91,14 @@ NOTE:
Some requirements for using atmel,at91rm9200-pinctrl binding:
1. We have pin function node defined under at91 controller node to represent
what pinmux functions this SoC supports.
-2. The pin configuration node intends to work on a specific function should
- to be defined under that specific function node.
- The function node's name should represent well about what function
- this group of pins in this pin configuration node are working on.
-3. The driver can use the function node's name and pin configuration node's
+2. The driver can use the function node's name and pin configuration node's
name describe the pin function and group hierarchy.
- For example, Linux Iat91 pinctrl driver takes the function node's name
+ For example, Linux at91 pinctrl driver takes the function node's name
as the function name and pin configuration node's name as group name to
create the map table.
-4. Each pin configuration node should have a phandle, devices can set pins
+3. Each pin configuration node should have a phandle, devices can set pins
configurations by referring to the phandle of that pin configuration node.
-5. The gpio controller must be describe in the pinctrl simple-bus.
+4. The gpio controller must be describe in the pinctrl simple-bus.
Examples:
diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi
index 3ae7abcd..b1c945f 100644
--- a/arch/arm/boot/dts/at91sam9260.dtsi
+++ b/arch/arm/boot/dts/at91sam9260.dtsi
@@ -103,6 +103,15 @@
compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
ranges = <0xfffff400 0xfffff400 0x600>;
+ atmel,mux-mask = <
+ /* A B */
+ 0xffffffff 0xffc00c3b /* pioA */
+ 0xffffffff 0x7fff3ccf /* pioB */
+ 0xffffffff 0x007fffff /* pioC */
+ >;
+
+ /* shared pinctrl settings */
+
pioA: gpio at fffff400 {
compatible = "atmel,at91rm9200-gpio";
reg = <0xfffff400 0x200>;
diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi
index ff882a6..4307f02 100644
--- a/arch/arm/boot/dts/at91sam9263.dtsi
+++ b/arch/arm/boot/dts/at91sam9263.dtsi
@@ -94,6 +94,17 @@
compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
ranges = <0xfffff200 0xfffff200 0xa00>;
+ atmel,mux-mask = <
+ /* A B */
+ 0xfffffffb 0xffffe07f /* pioA */
+ 0x0007ffff 0x39072fff /* pioB */
+ 0xffffffff 0x3ffffff8 /* pioC */
+ 0xfffffbff 0xffffffff /* pioD */
+ 0xffe00fff 0xfbfcff00 /* pioE */
+ >;
+
+ /* shared pinctrl settings */
+
pioA: gpio at fffff200 {
compatible = "atmel,at91rm9200-gpio";
reg = <0xfffff200 0x200>;
@@ -142,6 +153,7 @@
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
+ };
};
dbgu: serial at ffffee00 {
diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
index 990f2b1..57ae4c3 100644
--- a/arch/arm/boot/dts/at91sam9g45.dtsi
+++ b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -112,6 +112,17 @@
compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
ranges = <0xfffff200 0xfffff200 0xa00>;
+ atmel,mux-mask = <
+ /* A B */
+ 0xffffffff 0xffc003ff /* pioA */
+ 0xffffffff 0x800f8f00 /* pioB */
+ 0xffffffff 0x00000e00 /* pioC */
+ 0xffffffff 0xff0c1381 /* pioD */
+ 0xffffffff 0x81ffff81 /* pioE */
+ >;
+
+ /* shared pinctrl settings */
+
pioA: gpio at fffff200 {
compatible = "atmel,at91rm9200-gpio";
reg = <0xfffff200 0x200>;
diff --git a/arch/arm/boot/dts/at91sam9n12.dtsi b/arch/arm/boot/dts/at91sam9n12.dtsi
index 29706bd..a2d6201 100644
--- a/arch/arm/boot/dts/at91sam9n12.dtsi
+++ b/arch/arm/boot/dts/at91sam9n12.dtsi
@@ -103,9 +103,19 @@
pinctrl at fffff400 {
#address-cells = <1>;
#size-cells = <1>;
- compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
+ compatible = "atmel,at91sam9x5-pinctrl", "atmel,at91rm9200-pinctrl", "simple-bus";
ranges = <0xfffff400 0xfffff400 0x800>;
+ atmel,mux-mask = <
+ /* A B C */
+ 0xffffffff 0xffe07983 0x00000000 /* pioA */
+ 0x00040000 0x00047e0f 0x00000000 /* pioB */
+ 0xfdffffff 0x07c00000 0xb83fffff /* pioC */
+ 0x003fffff 0x003f8000 0x00000000 /* pioD */
+ >;
+
+ /* shared pinctrl settings */
+
pioA: gpio at fffff400 {
compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
reg = <0xfffff400 0x200>;
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index b3efecb..bc7a178 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -111,9 +111,19 @@
pinctrl at fffff200 {
#address-cells = <1>;
#size-cells = <1>;
- compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
+ compatible = "atmel,at91sam9x5-pinctrl", "atmel,at91rm9200-pinctrl", "simple-bus";
ranges = <0xfffff400 0xfffff400 0x800>;
+ atmel,mux-mask = <
+ /* A B C */
+ 0xffffffff 0xffe0399f 0xc000001c /* pioA */
+ 0xffffffff 0xffc003ff 0xffc003ff /* pioB */
+ 0xffffffff 0xffc003ff 0xffc003ff /* pioC */
+ 0xffffffff 0xffc003ff 0xffc003ff /* pioD */
+ >;
+
+ /* shared pinctrl settings */
+
pioA: gpio at fffff400 {
compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
reg = <0xfffff400 0x200>;
diff --git a/arch/arm/configs/at91_dt_defconfig b/arch/arm/configs/at91_dt_defconfig
index 67bc571..b175577 100644
--- a/arch/arm/configs/at91_dt_defconfig
+++ b/arch/arm/configs/at91_dt_defconfig
@@ -111,6 +111,7 @@ CONFIG_I2C=y
CONFIG_I2C_GPIO=y
CONFIG_SPI=y
CONFIG_SPI_ATMEL=y
+CONFIG_PINCTRL_AT91=y
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
CONFIG_AT91SAM9X_WATCHDOG=y
diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c
index 4462c8d..1b3bfd7 100644
--- a/arch/arm/mach-at91/at91sam9260.c
+++ b/arch/arm/mach-at91/at91sam9260.c
@@ -232,6 +232,9 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_ID("pioA", &pioA_clk),
CLKDEV_CON_ID("pioB", &pioB_clk),
CLKDEV_CON_ID("pioC", &pioC_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioA_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioC_clk),
};
static struct clk_lookup usart_clocks_lookups[] = {
diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
index e642846..9415c5b 100644
--- a/arch/arm/mach-at91/at91sam9263.c
+++ b/arch/arm/mach-at91/at91sam9263.c
@@ -210,6 +210,11 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("hclk", "a00000.ohci", &ohci_clk),
CLKDEV_CON_DEV_ID("spi_clk", "fffa4000.spi", &spi0_clk),
CLKDEV_CON_DEV_ID("spi_clk", "fffa8000.spi", &spi1_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff200.gpio", &pioA_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioCDE_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioCDE_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioCDE_clk),
};
static struct clk_lookup usart_clocks_lookups[] = {
diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c
index fb1fba1..23baeeb 100644
--- a/arch/arm/mach-at91/at91sam9g45.c
+++ b/arch/arm/mach-at91/at91sam9g45.c
@@ -256,6 +256,12 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("ehci_clk", "800000.ehci", &uhphs_clk),
/* fake hclk clock */
CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &uhphs_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff200.gpio", &pioA_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioC_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioDE_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioDE_clk),
+
CLKDEV_CON_ID("pioA", &pioA_clk),
CLKDEV_CON_ID("pioB", &pioB_clk),
CLKDEV_CON_ID("pioC", &pioC_clk),
diff --git a/arch/arm/mach-at91/at91sam9n12.c b/arch/arm/mach-at91/at91sam9n12.c
index 80b2b7d..a4676a5 100644
--- a/arch/arm/mach-at91/at91sam9n12.c
+++ b/arch/arm/mach-at91/at91sam9n12.c
@@ -169,10 +169,10 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "f8008000.timer", &tcb_clk),
CLKDEV_CON_DEV_ID("t0_clk", "f800c000.timer", &tcb_clk),
CLKDEV_CON_DEV_ID("dma_clk", "ffffec00.dma-controller", &dma_clk),
- CLKDEV_CON_ID("pioA", &pioAB_clk),
- CLKDEV_CON_ID("pioB", &pioAB_clk),
- CLKDEV_CON_ID("pioC", &pioCD_clk),
- CLKDEV_CON_ID("pioD", &pioCD_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioAB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioAB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioCD_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioCD_clk),
/* additional fake clock for macb_hclk */
CLKDEV_CON_DEV_ID("hclk", "500000.ohci", &uhp_clk),
CLKDEV_CON_DEV_ID("ohci_clk", "500000.ohci", &uhp_clk),
@@ -221,9 +221,6 @@ static void __init at91sam9n12_map_io(void)
void __init at91sam9n12_initialize(void)
{
at91_extern_irq = (1 << AT91SAM9N12_ID_IRQ0);
-
- /* Register GPIO subsystem (using DT) */
- at91_gpio_init(NULL, 0);
}
AT91_SOC_START(sam9n12)
diff --git a/arch/arm/mach-at91/at91sam9x5.c b/arch/arm/mach-at91/at91sam9x5.c
index 56b6988..79b5c52 100644
--- a/arch/arm/mach-at91/at91sam9x5.c
+++ b/arch/arm/mach-at91/at91sam9x5.c
@@ -231,10 +231,10 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "f800c000.timer", &tcb0_clk),
CLKDEV_CON_DEV_ID("dma_clk", "ffffec00.dma-controller", &dma0_clk),
CLKDEV_CON_DEV_ID("dma_clk", "ffffee00.dma-controller", &dma1_clk),
- CLKDEV_CON_ID("pioA", &pioAB_clk),
- CLKDEV_CON_ID("pioB", &pioAB_clk),
- CLKDEV_CON_ID("pioC", &pioCD_clk),
- CLKDEV_CON_ID("pioD", &pioCD_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioAB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioAB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioCD_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioCD_clk),
/* additional fake clock for macb_hclk */
CLKDEV_CON_DEV_ID("hclk", "f802c000.ethernet", &macb0_clk),
CLKDEV_CON_DEV_ID("hclk", "f8030000.ethernet", &macb1_clk),
@@ -310,12 +310,6 @@ static void __init at91sam9x5_map_io(void)
at91_init_sram(0, AT91SAM9X5_SRAM_BASE, AT91SAM9X5_SRAM_SIZE);
}
-void __init at91sam9x5_initialize(void)
-{
- /* Register GPIO subsystem (using DT) */
- at91_gpio_init(NULL, 0);
-}
-
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
@@ -323,5 +317,4 @@ void __init at91sam9x5_initialize(void)
AT91_SOC_START(sam9x5)
.map_io = at91sam9x5_map_io,
.register_clocks = at91sam9x5_register_clocks,
- .init = at91sam9x5_initialize,
AT91_SOC_END
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 50c69b5..fcb66ea 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -449,7 +449,8 @@ void __init at91_dt_initialize(void)
/* Register the processor-specific clocks */
at91_boot_soc.register_clocks();
- at91_boot_soc.init();
+ if (at91_boot_soc.init)
+ at91_boot_soc.init();
}
#endif
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index e4712d1..9c0fe11 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -749,7 +749,7 @@ static int __devinit at91_pinctrl_parse_groups(struct device_node *np,
grp->name = np->name;
/*
- * the binding format is fsl,pins = <bank pin mux CONFIG ...>,
+ * the binding format is atmel,pins = <bank pin mux CONFIG ...>,
* do sanity check and calculate pins number
*/
list = of_get_property(np, "atmel,pins", &size);
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 09/16] arm: at91: dt: at91sam9 add serial pinctrl support
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (6 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 08/16] arm: at91: dt: at91sam9 " Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 10/16] tty: atmel_serial: add " Jean-Christophe PLAGNIOL-VILLARD
` (6 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Set the dbgu pinctrl config by default as we have only one possible config
For other uart set the rxd/txd by default.
For at91sam9x5ek create soc based dts as we need to include specific soc dtsi.
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/boot/dts/at91sam9260.dtsi | 109 ++++++++++++++++++++
arch/arm/boot/dts/at91sam9263.dtsi | 57 ++++++++++
arch/arm/boot/dts/at91sam9g15.dtsi | 28 +++++
arch/arm/boot/dts/at91sam9g15ek.dts | 16 +++
arch/arm/boot/dts/at91sam9g25.dtsi | 28 +++++
arch/arm/boot/dts/at91sam9g25ek.dts | 65 +++---------
arch/arm/boot/dts/at91sam9g35.dtsi | 28 +++++
arch/arm/boot/dts/at91sam9g35ek.dts | 16 +++
arch/arm/boot/dts/at91sam9g45.dtsi | 73 +++++++++++++
arch/arm/boot/dts/at91sam9n12.dtsi | 83 +++++++++++++++
arch/arm/boot/dts/at91sam9x25.dtsi | 28 +++++
arch/arm/boot/dts/at91sam9x25ek.dts | 16 +++
arch/arm/boot/dts/at91sam9x35.dtsi | 28 +++++
arch/arm/boot/dts/at91sam9x35ek.dts | 16 +++
arch/arm/boot/dts/at91sam9x5.dtsi | 97 +++++++++++++++--
.../dts/{at91sam9g25ek.dts => at91sam9x5ek.dtsi} | 8 +-
arch/arm/mach-at91/Makefile.boot | 4 +
17 files changed, 637 insertions(+), 63 deletions(-)
create mode 100644 arch/arm/boot/dts/at91sam9g15.dtsi
create mode 100644 arch/arm/boot/dts/at91sam9g15ek.dts
create mode 100644 arch/arm/boot/dts/at91sam9g25.dtsi
rewrite arch/arm/boot/dts/at91sam9g25ek.dts (62%)
create mode 100644 arch/arm/boot/dts/at91sam9g35.dtsi
create mode 100644 arch/arm/boot/dts/at91sam9g35ek.dts
create mode 100644 arch/arm/boot/dts/at91sam9x25.dtsi
create mode 100644 arch/arm/boot/dts/at91sam9x25ek.dts
create mode 100644 arch/arm/boot/dts/at91sam9x35.dtsi
create mode 100644 arch/arm/boot/dts/at91sam9x35ek.dts
rename arch/arm/boot/dts/{at91sam9g25ek.dts => at91sam9x5ek.dtsi} (75%)
diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi
index b1c945f..a3d7132 100644
--- a/arch/arm/boot/dts/at91sam9260.dtsi
+++ b/arch/arm/boot/dts/at91sam9260.dtsi
@@ -111,6 +111,101 @@
>;
/* shared pinctrl settings */
+ dbgu {
+ pinctrl_dbgu: dbgu-0 {
+ atmel,pins =
+ <1 14 0x1 0x0 /* PB14 periph A */
+ 1 15 0x1 0x1>; /* PB15 periph with pullup */
+ };
+ };
+
+ uart0 {
+ pinctrl_uart0: uart0-0 {
+ atmel,pins =
+ <1 4 0x1 0x0 /* PB4 periph A */
+ 1 5 0x1 0x0>; /* PB5 periph A */
+ };
+
+ pinctrl_uart0_rts_cts: uart0_rts_cts-0 {
+ atmel,pins =
+ <1 26 0x1 0x0 /* PB26 periph A */
+ 1 27 0x1 0x0>; /* PB27 periph A */
+ };
+
+ pinctrl_uart0_dtr_dsr: uart0_dtr_dsr-0 {
+ atmel,pins =
+ <1 24 0x1 0x0 /* PB24 periph A */
+ 1 22 0x1 0x0>; /* PB22 periph A */
+ };
+
+ pinctrl_uart0_dcd: uart0_dcd-0 {
+ atmel,pins =
+ <1 23 0x1 0x0>; /* PB23 periph A */
+ };
+
+ pinctrl_uart0_ri: uart0_ri-0 {
+ atmel,pins =
+ <1 25 0x1 0x0>; /* PB25 periph A */
+ };
+ };
+
+ uart1 {
+ pinctrl_uart1: uart1-0 {
+ atmel,pins =
+ <2 6 0x1 0x1 /* PB6 periph A with pullup */
+ 2 7 0x1 0x0>; /* PB7 periph A */
+ };
+
+ pinctrl_uart1_rts_cts: uart1_rts_cts-0 {
+ atmel,pins =
+ <1 28 0x1 0x0 /* PB28 periph A */
+ 1 29 0x1 0x0>; /* PB29 periph A */
+ };
+ };
+
+ uart2 {
+ pinctrl_uart2: uart2-0 {
+ atmel,pins =
+ <1 8 0x1 0x1 /* PB8 periph A with pullup */
+ 1 9 0x1 0x0>; /* PB9 periph A */
+ };
+
+ pinctrl_uart2_rts_cts: uart2_rts_cts-0 {
+ atmel,pins =
+ <0 4 0x1 0x0 /* PA4 periph A */
+ 0 5 0x1 0x0>; /* PA5 periph A */
+ };
+ };
+
+ uart3 {
+ pinctrl_uart3: uart3-0 {
+ atmel,pins =
+ <2 10 0x1 0x1 /* PB10 periph A with pullup */
+ 2 11 0x1 0x0>; /* PB11 periph A */
+ };
+
+ pinctrl_uart3_rts_cts: uart3_rts_cts-0 {
+ atmel,pins =
+ <3 8 0x2 0x0 /* PB8 periph B */
+ 3 10 0x2 0x0>; /* PB10 periph B */
+ };
+ };
+
+ uart4 {
+ pinctrl_uart4: uart4-0 {
+ atmel,pins =
+ <0 31 0x2 0x1 /* PA31 periph B with pullup */
+ 0 30 0x2 0x0>; /* PA30 periph B */
+ };
+ };
+
+ uart5 {
+ pinctrl_uart5: uart5-0 {
+ atmel,pins =
+ <2 12 0x1 0x1 /* PB12 periph A with pullup */
+ 2 13 0x1 0x0>; /* PB13 periph A */
+ };
+ };
pioA: gpio at fffff400 {
compatible = "atmel,at91rm9200-gpio";
@@ -147,6 +242,8 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xfffff200 0x200>;
interrupts = <1 4 7>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_dbgu>;
status = "disabled";
};
@@ -156,6 +253,8 @@
interrupts = <6 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart0>;
status = "disabled";
};
@@ -165,6 +264,8 @@
interrupts = <7 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1>;
status = "disabled";
};
@@ -174,6 +275,8 @@
interrupts = <8 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart2>;
status = "disabled";
};
@@ -183,6 +286,8 @@
interrupts = <23 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart3>;
status = "disabled";
};
@@ -192,6 +297,8 @@
interrupts = <24 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart4>;
status = "disabled";
};
@@ -201,6 +308,8 @@
interrupts = <25 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart5>;
status = "disabled";
};
diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi
index 4307f02..8bc4ce7 100644
--- a/arch/arm/boot/dts/at91sam9263.dtsi
+++ b/arch/arm/boot/dts/at91sam9263.dtsi
@@ -104,6 +104,55 @@
>;
/* shared pinctrl settings */
+ dbgu {
+ pinctrl_dbgu: dbgu-0 {
+ atmel,pins =
+ <2 30 0x1 0x0 /* PC30 periph A */
+ 2 31 0x1 0x1>; /* PC31 periph with pullup */
+ };
+ };
+
+ uart0 {
+ pinctrl_uart0: uart0-0 {
+ atmel,pins =
+ <0 26 0x1 0x1 /* PA26 periph A with pullup */
+ 0 27 0x1 0x0>; /* PA27 periph A */
+ };
+
+ pinctrl_uart0_rts_cts: uart0_rts_cts-0 {
+ atmel,pins =
+ <0 28 0x1 0x0 /* PA28 periph A */
+ 0 29 0x1 0x0>; /* PA29 periph A */
+ };
+ };
+
+ uart1 {
+ pinctrl_uart1: uart1-0 {
+ atmel,pins =
+ <3 0 0x1 0x1 /* PD0 periph A with pullup */
+ 3 1 0x1 0x0>; /* PD1 periph A */
+ };
+
+ pinctrl_uart1_rts_cts: uart1_rts_cts-0 {
+ atmel,pins =
+ <3 7 0x2 0x0 /* PD7 periph B */
+ 3 8 0x2 0x0>; /* PD8 periph B */
+ };
+ };
+
+ uart2 {
+ pinctrl_uart2: uart2-0 {
+ atmel,pins =
+ <3 2 0x1 0x1 /* PD2 periph A with pullup */
+ 3 3 0x1 0x0>; /* PD3 periph A */
+ };
+
+ pinctrl_uart2_rts_cts: uart2_rts_cts-0 {
+ atmel,pins =
+ <3 5 0x2 0x0 /* PD5 periph B */
+ 4 6 0x2 0x0>; /* PD6 periph B */
+ };
+ };
pioA: gpio at fffff200 {
compatible = "atmel,at91rm9200-gpio";
@@ -160,6 +209,8 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xffffee00 0x200>;
interrupts = <1 4 7>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_dbgu>;
status = "disabled";
};
@@ -169,6 +220,8 @@
interrupts = <7 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart0>;
status = "disabled";
};
@@ -178,6 +231,8 @@
interrupts = <8 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1>;
status = "disabled";
};
@@ -187,6 +242,8 @@
interrupts = <9 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart2>;
status = "disabled";
};
diff --git a/arch/arm/boot/dts/at91sam9g15.dtsi b/arch/arm/boot/dts/at91sam9g15.dtsi
new file mode 100644
index 0000000..fbe7a70
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9g15.dtsi
@@ -0,0 +1,28 @@
+/*
+ * at91sam9g15.dtsi - Device Tree Include file for AT91SAM9G15 SoC
+ *
+ * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Licensed under GPLv2.
+ */
+
+/include/ "at91sam9x5.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9G15 SoC";
+ compatible = "atmel, at91sam9g15, atmel,at91sam9x5";
+
+ ahb {
+ apb {
+ pinctrl at fffff400 {
+ atmel,mux-mask = <
+ /* A B C */
+ 0xffffffff 0xffe0399f 0x00000000 /* pioA */
+ 0x00040000 0x00047e3f 0x00000000 /* pioB */
+ 0xfdffffff 0x00000000 0xb83fffff /* pioC */
+ 0x003fffff 0x003f8000 0x00000000 /* pioD */
+ >;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/at91sam9g15ek.dts b/arch/arm/boot/dts/at91sam9g15ek.dts
new file mode 100644
index 0000000..86dd3f6
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9g15ek.dts
@@ -0,0 +1,16 @@
+/*
+ * at91sam9g15ek.dts - Device Tree file for AT91SAM9G15-EK board
+ *
+ * Copyright (C) 2012 Atmel,
+ * 2012 Nicolas Ferre <nicolas.ferre@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+/include/ "at91sam9g15.dtsi"
+/include/ "at91sam9x5ek.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9G25-EK";
+ compatible = "atmel,at91sam9g15ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+};
diff --git a/arch/arm/boot/dts/at91sam9g25.dtsi b/arch/arm/boot/dts/at91sam9g25.dtsi
new file mode 100644
index 0000000..05a718f
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9g25.dtsi
@@ -0,0 +1,28 @@
+/*
+ * at91sam9g25.dtsi - Device Tree Include file for AT91SAM9G25 SoC
+ *
+ * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Licensed under GPLv2.
+ */
+
+/include/ "at91sam9x5.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9G25 SoC";
+ compatible = "atmel, at91sam9g25, atmel,at91sam9x5";
+
+ ahb {
+ apb {
+ pinctrl at fffff400 {
+ atmel,mux-mask = <
+ /* A B C */
+ 0xffffffff 0xffe0399f 0xc000001c /* pioA */
+ 0x0007ffff 0x8000fe3f 0x00000000 /* pioB */
+ 0x80000000 0x07c0ffff 0xb83fffff /* pioC */
+ 0x003fffff 0x003f8000 0x00000000 /* pioD */
+ >;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/at91sam9g25ek.dts b/arch/arm/boot/dts/at91sam9g25ek.dts
dissimilarity index 62%
index 7829a4d..c5ab16f 100644
--- a/arch/arm/boot/dts/at91sam9g25ek.dts
+++ b/arch/arm/boot/dts/at91sam9g25ek.dts
@@ -1,49 +1,16 @@
-/*
- * at91sam9g25ek.dts - Device Tree file for AT91SAM9G25-EK board
- *
- * Copyright (C) 2012 Atmel,
- * 2012 Nicolas Ferre <nicolas.ferre@atmel.com>
- *
- * Licensed under GPLv2 or later.
- */
-/dts-v1/;
-/include/ "at91sam9x5.dtsi"
-/include/ "at91sam9x5cm.dtsi"
-
-/ {
- model = "Atmel AT91SAM9G25-EK";
- compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
-
- chosen {
- bootargs = "128M console=ttyS0,115200 root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs";
- };
-
- ahb {
- apb {
- dbgu: serial at fffff200 {
- status = "okay";
- };
-
- usart0: serial at f801c000 {
- status = "okay";
- };
-
- macb0: ethernet at f802c000 {
- phy-mode = "rmii";
- status = "okay";
- };
- };
-
- usb0: ohci at 00600000 {
- status = "okay";
- num-ports = <2>;
- atmel,vbus-gpio = <&pioD 19 1
- &pioD 20 1
- >;
- };
-
- usb1: ehci at 00700000 {
- status = "okay";
- };
- };
-};
+/*
+ * at91sam9g25ek.dts - Device Tree file for AT91SAM9G25-EK board
+ *
+ * Copyright (C) 2012 Atmel,
+ * 2012 Nicolas Ferre <nicolas.ferre@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+/include/ "at91sam9g25.dtsi"
+/include/ "at91sam9x5ek.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9G25-EK";
+ compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+};
diff --git a/arch/arm/boot/dts/at91sam9g35.dtsi b/arch/arm/boot/dts/at91sam9g35.dtsi
new file mode 100644
index 0000000..f9d14a7
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9g35.dtsi
@@ -0,0 +1,28 @@
+/*
+ * at91sam9g35.dtsi - Device Tree Include file for AT91SAM9G35 SoC
+ *
+ * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Licensed under GPLv2.
+ */
+
+/include/ "at91sam9x5.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9G35 SoC";
+ compatible = "atmel, at91sam9g35, atmel,at91sam9x5";
+
+ ahb {
+ apb {
+ pinctrl at fffff400 {
+ atmel,mux-mask = <
+ /* A B C */
+ 0xffffffff 0xffe0399f 0xc000000c /* pioA */
+ 0x000406ff 0x00047e3f 0x00000000 /* pioB */
+ 0xfdffffff 0x00000000 0xb83fffff /* pioC */
+ 0x003fffff 0x003f8000 0x00000000 /* pioD */
+ >;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/at91sam9g35ek.dts b/arch/arm/boot/dts/at91sam9g35ek.dts
new file mode 100644
index 0000000..95944bd
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9g35ek.dts
@@ -0,0 +1,16 @@
+/*
+ * at91sam9g35ek.dts - Device Tree file for AT91SAM9G35-EK board
+ *
+ * Copyright (C) 2012 Atmel,
+ * 2012 Nicolas Ferre <nicolas.ferre@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+/include/ "at91sam9g35.dtsi"
+/include/ "at91sam9x5ek.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9G35-EK";
+ compatible = "atmel,at91sam9g35ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+};
diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
index 57ae4c3..301458e 100644
--- a/arch/arm/boot/dts/at91sam9g45.dtsi
+++ b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -122,6 +122,69 @@
>;
/* shared pinctrl settings */
+ dbgu {
+ pinctrl_dbgu: dbgu-0 {
+ atmel,pins =
+ <1 12 0x1 0x0 /* PB12 periph A */
+ 1 13 0x1 0x0>; /* PB13 periph A */
+ };
+ };
+
+ uart0 {
+ pinctrl_uart0: uart0-0 {
+ atmel,pins =
+ <1 19 0x1 0x1 /* PB19 periph A with pullup */
+ 1 18 0x1 0x0>; /* PB18 periph A */
+ };
+
+ pinctrl_uart0_rts_cts: uart0_rts_cts-0 {
+ atmel,pins =
+ <1 17 0x2 0x0 /* PB17 periph B */
+ 1 15 0x2 0x0>; /* PB15 periph B */
+ };
+ };
+
+ uart1 {
+ pinctrl_uart1: uart1-0 {
+ atmel,pins =
+ <1 4 0x1 0x1 /* PB4 periph A with pullup */
+ 1 5 0x1 0x0>; /* PB5 periph A */
+ };
+
+ pinctrl_uart1_rts_cts: uart1_rts_cts-0 {
+ atmel,pins =
+ <3 16 0x1 0x0 /* PD16 periph A */
+ 3 17 0x1 0x0>; /* PD17 periph A */
+ };
+ };
+
+ uart2 {
+ pinctrl_uart2: uart2-0 {
+ atmel,pins =
+ <1 6 0x1 0x1 /* PB6 periph A with pullup */
+ 1 7 0x1 0x0>; /* PB7 periph A */
+ };
+
+ pinctrl_uart2_rts_cts: uart2_rts_cts-0 {
+ atmel,pins =
+ <2 9 0x2 0x0 /* PC9 periph B */
+ 2 11 0x2 0x0>; /* PC11 periph B */
+ };
+ };
+
+ uart3 {
+ pinctrl_uart3: uart3-0 {
+ atmel,pins =
+ <1 8 0x1 0x1 /* PB9 periph A with pullup */
+ 1 9 0x1 0x0>; /* PB8 periph A */
+ };
+
+ pinctrl_uart3_rts_cts: uart3_rts_cts-0 {
+ atmel,pins =
+ <0 23 0x2 0x0 /* PA23 periph B */
+ 0 24 0x2 0x0>; /* PA24 periph B */
+ };
+ };
pioA: gpio at fffff200 {
compatible = "atmel,at91rm9200-gpio";
@@ -178,6 +241,8 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xffffee00 0x200>;
interrupts = <1 4 7>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_dbgu>;
status = "disabled";
};
@@ -187,6 +252,8 @@
interrupts = <7 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart0>;
status = "disabled";
};
@@ -196,6 +263,8 @@
interrupts = <8 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1>;
status = "disabled";
};
@@ -205,6 +274,8 @@
interrupts = <9 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart2>;
status = "disabled";
};
@@ -214,6 +285,8 @@
interrupts = <10 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart3>;
status = "disabled";
};
diff --git a/arch/arm/boot/dts/at91sam9n12.dtsi b/arch/arm/boot/dts/at91sam9n12.dtsi
index a2d6201..699b2f3 100644
--- a/arch/arm/boot/dts/at91sam9n12.dtsi
+++ b/arch/arm/boot/dts/at91sam9n12.dtsi
@@ -115,6 +115,79 @@
>;
/* shared pinctrl settings */
+ dbgu {
+ pinctrl_dbgu: dbgu-0 {
+ atmel,pins =
+ <0 9 0x1 0x0 /* PA9 periph A */
+ 0 10 0x1 0x1>; /* PA10 periph with pullup */
+ };
+ };
+
+ uart0 {
+ pinctrl_uart0: uart0-0 {
+ atmel,pins =
+ <0 1 0x1 0x1 /* PA1 periph A with pullup */
+ 0 0 0x1 0x0>; /* PA0 periph A */
+ };
+
+ pinctrl_uart0_rts_cts: uart0_rts_cts-0 {
+ atmel,pins =
+ <0 2 0x1 0x0 /* PA2 periph A */
+ 0 3 0x1 0x0>; /* PA3 periph A */
+ };
+ };
+
+ uart1 {
+ pinctrl_uart1: uart1-0 {
+ atmel,pins =
+ <0 6 0x1 0x1 /* PA6 periph A with pullup */
+ 0 5 0x1 0x0>; /* PA5 periph A */
+ };
+ };
+
+ uart2 {
+ pinctrl_uart2: uart2-0 {
+ atmel,pins =
+ <0 8 0x1 0x1 /* PA8 periph A with pullup */
+ 0 7 0x1 0x0>; /* PA7 periph A */
+ };
+
+ pinctrl_uart2_rts_cts: uart2_rts_cts-0 {
+ atmel,pins =
+ <1 0 0x2 0x0 /* PB0 periph B */
+ 1 1 0x2 0x0>; /* PB1 periph B */
+ };
+ };
+
+ uart3 {
+ pinctrl_uart3: uart3-0 {
+ atmel,pins =
+ <2 23 0x2 0x1 /* PC23 periph B with pullup */
+ 2 22 0x2 0x0>; /* PC22 periph B */
+ };
+
+ pinctrl_uart3_rts_cts: uart3_rts_cts-0 {
+ atmel,pins =
+ <2 24 0x2 0x0 /* PC24 periph B */
+ 2 25 0x2 0x0>; /* PC25 periph B */
+ };
+ };
+
+ usart0 {
+ pinctrl_usart0: usart0-0 {
+ atmel,pins =
+ <2 9 0x3 0x1 /* PC9 periph C with pullup */
+ 2 8 0x3 0x0>; /* PC8 periph C */
+ };
+ };
+
+ usart1 {
+ pinctrl_usart1: usart1-0 {
+ atmel,pins =
+ <2 16 0x3 0x1 /* PC17 periph C with pullup */
+ 2 17 0x3 0x0>; /* PC16 periph C */
+ };
+ };
pioA: gpio at fffff400 {
compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
@@ -161,6 +234,8 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xfffff200 0x200>;
interrupts = <1 4 7>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_dbgu>;
status = "disabled";
};
@@ -170,6 +245,8 @@
interrupts = <5 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart0>;
status = "disabled";
};
@@ -179,6 +256,8 @@
interrupts = <6 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1>;
status = "disabled";
};
@@ -188,6 +267,8 @@
interrupts = <7 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart2>;
status = "disabled";
};
@@ -197,6 +278,8 @@
interrupts = <8 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart3>;
status = "disabled";
};
};
diff --git a/arch/arm/boot/dts/at91sam9x25.dtsi b/arch/arm/boot/dts/at91sam9x25.dtsi
new file mode 100644
index 0000000..956c65f
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9x25.dtsi
@@ -0,0 +1,28 @@
+/*
+ * at91sam9x25.dtsi - Device Tree Include file for AT91SAM9X25 SoC
+ *
+ * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Licensed under GPLv2.
+ */
+
+/include/ "at91sam9x5.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9X25 SoC";
+ compatible = "atmel, at91sam9x25, atmel,at91sam9x5";
+
+ ahb {
+ apb {
+ pinctrl at fffff400 {
+ atmel,mux-mask = <
+ /* A B C */
+ 0xffffffff 0xffe03fff 0xc000001c /* pioA */
+ 0x0007ffff 0x00047e3f 0x00000000 /* pioB */
+ 0x80000000 0xfffd0000 0xb83fffff /* pioC */
+ 0x003fffff 0x003f8000 0x00000000 /* pioD */
+ >;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/at91sam9x25ek.dts b/arch/arm/boot/dts/at91sam9x25ek.dts
new file mode 100644
index 0000000..af907ea
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9x25ek.dts
@@ -0,0 +1,16 @@
+/*
+ * at91sam9x25ek.dts - Device Tree file for AT91SAM9X25-EK board
+ *
+ * Copyright (C) 2012 Atmel,
+ * 2012 Nicolas Ferre <nicolas.ferre@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+/include/ "at91sam9x25.dtsi"
+/include/ "at91sam9x5ek.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9G25-EK";
+ compatible = "atmel,at91sam9x25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+};
diff --git a/arch/arm/boot/dts/at91sam9x35.dtsi b/arch/arm/boot/dts/at91sam9x35.dtsi
new file mode 100644
index 0000000..fb102d6
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9x35.dtsi
@@ -0,0 +1,28 @@
+/*
+ * at91sam9x35.dtsi - Device Tree Include file for AT91SAM9X35 SoC
+ *
+ * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Licensed under GPLv2.
+ */
+
+/include/ "at91sam9x5.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9X35 SoC";
+ compatible = "atmel, at91sam9x35, atmel,at91sam9x5";
+
+ ahb {
+ apb {
+ pinctrl at fffff400 {
+ atmel,mux-mask = <
+ /* A B C */
+ 0xffffffff 0xffe03fff 0xc000000c /* pioA */
+ 0x000406ff 0x00047e3f 0x00000000 /* pioB */
+ 0xfdffffff 0x00000000 0xb83fffff /* pioC */
+ 0x003fffff 0x003f8000 0x00000000 /* pioD */
+ >;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/at91sam9x35ek.dts b/arch/arm/boot/dts/at91sam9x35ek.dts
new file mode 100644
index 0000000..5ccb607
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9x35ek.dts
@@ -0,0 +1,16 @@
+/*
+ * at91sam9x35ek.dts - Device Tree file for AT91SAM9X35-EK board
+ *
+ * Copyright (C) 2012 Atmel,
+ * 2012 Nicolas Ferre <nicolas.ferre@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+/include/ "at91sam9x35.dtsi"
+/include/ "at91sam9x5ek.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9X35-EK";
+ compatible = "atmel,at91sam9x35ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+};
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index bc7a178..6482a85 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -108,21 +108,92 @@
interrupts = <21 4 0>;
};
- pinctrl at fffff200 {
+ pinctrl at fffff400 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "atmel,at91sam9x5-pinctrl", "atmel,at91rm9200-pinctrl", "simple-bus";
ranges = <0xfffff400 0xfffff400 0x800>;
- atmel,mux-mask = <
- /* A B C */
- 0xffffffff 0xffe0399f 0xc000001c /* pioA */
- 0xffffffff 0xffc003ff 0xffc003ff /* pioB */
- 0xffffffff 0xffc003ff 0xffc003ff /* pioC */
- 0xffffffff 0xffc003ff 0xffc003ff /* pioD */
- >;
-
/* shared pinctrl settings */
+ dbgu {
+ pinctrl_dbgu: dbgu-0 {
+ atmel,pins =
+ <0 9 0x1 0x0 /* PA9 periph A */
+ 0 10 0x1 0x1>; /* PA10 periph A with pullup */
+ };
+ };
+
+ uart0 {
+ pinctrl_uart0: uart0-0 {
+ atmel,pins =
+ <0 0 0x1 0x1 /* PA0 periph A with pullup */
+ 0 1 0x1 0x0>; /* PA1 periph A */
+ };
+
+ pinctrl_uart0_rts_cts: uart0_rts_cts-0 {
+ atmel,pins =
+ <0 2 0x1 0x0 /* PA2 periph A */
+ 0 3 0x1 0x0>; /* PA3 periph A */
+ };
+ };
+
+ uart1 {
+ pinctrl_uart1: uart1-0 {
+ atmel,pins =
+ <0 5 0x1 0x1 /* PA5 periph A with pullup */
+ 0 6 0x1 0x0>; /* PA6 periph A */
+ };
+
+ pinctrl_uart1_rts_cts: uart1_rts_cts-0 {
+ atmel,pins =
+ <3 27 0x3 0x0 /* PC27 periph C */
+ 3 28 0x3 0x0>; /* PC28 periph C */
+ };
+ };
+
+ uart2 {
+ pinctrl_uart2: uart2-0 {
+ atmel,pins =
+ <0 7 0x1 0x1 /* PA7 periph A with pullup */
+ 0 8 0x1 0x0>; /* PA8 periph A */
+ };
+
+ pinctrl_uart2_rts_cts: uart2_rts_cts-0 {
+ atmel,pins =
+ <0 0 0x2 0x0 /* PB0 periph B */
+ 0 1 0x2 0x0>; /* PB1 periph B */
+ };
+ };
+
+ uart3 {
+ pinctrl_uart3: uart3-0 {
+ atmel,pins =
+ <3 23 0x2 0x1 /* PC22 periph B with pullup */
+ 3 23 0x2 0x0>; /* PC23 periph B */
+ };
+
+ pinctrl_uart3_rts_cts: uart3_rts_cts-0 {
+ atmel,pins =
+ <3 24 0x2 0x0 /* PC24 periph B */
+ 3 25 0x2 0x0>; /* PC25 periph B */
+ };
+ };
+
+ usart0 {
+ pinctrl_usart0: usart0-0 {
+ atmel,pins =
+ <3 8 0x3 0x0 /* PC8 periph C */
+ 3 9 0x3 0x1>; /* PC9 periph C with pullup */
+ };
+ };
+
+ usart1 {
+ pinctrl_usart1: usart1-0 {
+ atmel,pins =
+ <3 16 0x3 0x0 /* PC16 periph C */
+ 3 17 0x3 0x1>; /* PC17 periph C with pullup */
+ };
+ };
pioA: gpio at fffff400 {
compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
@@ -171,6 +242,8 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xfffff200 0x200>;
interrupts = <1 4 7>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_dbgu>;
status = "disabled";
};
@@ -180,6 +253,8 @@
interrupts = <5 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart0>;
status = "disabled";
};
@@ -189,6 +264,8 @@
interrupts = <6 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1>;
status = "disabled";
};
@@ -198,6 +275,8 @@
interrupts = <7 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart2>;
status = "disabled";
};
diff --git a/arch/arm/boot/dts/at91sam9g25ek.dts b/arch/arm/boot/dts/at91sam9x5ek.dtsi
similarity index 75%
rename from arch/arm/boot/dts/at91sam9g25ek.dts
rename to arch/arm/boot/dts/at91sam9x5ek.dtsi
index 7829a4d..e5000a7 100644
--- a/arch/arm/boot/dts/at91sam9g25ek.dts
+++ b/arch/arm/boot/dts/at91sam9x5ek.dtsi
@@ -1,18 +1,16 @@
/*
- * at91sam9g25ek.dts - Device Tree file for AT91SAM9G25-EK board
+ * at91sam9x5ek.dtsi - Device Tree file for AT91SAM9x5CM Base board
*
* Copyright (C) 2012 Atmel,
* 2012 Nicolas Ferre <nicolas.ferre@atmel.com>
*
* Licensed under GPLv2 or later.
*/
-/dts-v1/;
-/include/ "at91sam9x5.dtsi"
/include/ "at91sam9x5cm.dtsi"
/ {
- model = "Atmel AT91SAM9G25-EK";
- compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+ model = "Atmel AT91SAM9X5-EK";
+ compatible = "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
chosen {
bootargs = "128M console=ttyS0,115200 root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs";
diff --git a/arch/arm/mach-at91/Makefile.boot b/arch/arm/mach-at91/Makefile.boot
index 30bb733..0838d30 100644
--- a/arch/arm/mach-at91/Makefile.boot
+++ b/arch/arm/mach-at91/Makefile.boot
@@ -35,4 +35,8 @@ dtb-$(CONFIG_MACH_AT91SAM_DT) += at91sam9m10g45ek.dtb
# sam9n12
dtb-$(CONFIG_MACH_AT91SAM_DT) += at91sam9n12ek.dtb
# sam9x5
+dtb-$(CONFIG_MACH_AT91SAM_DT) += at91sam9g15ek.dtb
dtb-$(CONFIG_MACH_AT91SAM_DT) += at91sam9g25ek.dtb
+dtb-$(CONFIG_MACH_AT91SAM_DT) += at91sam9g35ek.dtb
+dtb-$(CONFIG_MACH_AT91SAM_DT) += at91sam9x25ek.dtb
+dtb-$(CONFIG_MACH_AT91SAM_DT) += at91sam9x35ek.dtb
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 10/16] tty: atmel_serial: add pinctrl support
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (7 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 09/16] arm: at91: dt: at91sam9 add serial " Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 11/16] arm: at91: dt: sam9m10g45ek: use rts/cts pinctrl group for uart1 Jean-Christophe PLAGNIOL-VILLARD
` (5 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
drivers/tty/serial/atmel_serial.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 3d7e1ee..65f891b 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -39,6 +39,7 @@
#include <linux/atmel_pdc.h>
#include <linux/atmel_serial.h>
#include <linux/uaccess.h>
+#include <linux/pinctrl/consumer.h>
#include <asm/io.h>
#include <asm/ioctls.h>
@@ -1773,6 +1774,7 @@ static int __devinit atmel_serial_probe(struct platform_device *pdev)
struct atmel_uart_data *pdata = pdev->dev.platform_data;
void *data;
int ret = -ENODEV;
+ struct pinctrl *pinctrl;
BUILD_BUG_ON(ATMEL_SERIAL_RINGSIZE & (ATMEL_SERIAL_RINGSIZE - 1));
@@ -1805,6 +1807,12 @@ static int __devinit atmel_serial_probe(struct platform_device *pdev)
atmel_init_port(port, pdev);
+ pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+ if (IS_ERR(pinctrl)) {
+ ret = PTR_ERR(pinctrl);
+ goto err;
+ }
+
if (!atmel_use_dma_rx(&port->uart)) {
ret = -ENOMEM;
data = kmalloc(sizeof(struct atmel_uart_char)
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 11/16] arm: at91: dt: sam9m10g45ek: use rts/cts pinctrl group for uart1
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (8 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 10/16] tty: atmel_serial: add " Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 12/16] arm: at91: dt: sam9263ek: use rts/cts pinctrl group for uart0 Jean-Christophe PLAGNIOL-VILLARD
` (4 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/boot/dts/at91sam9m10g45ek.dts | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/at91sam9m10g45ek.dts b/arch/arm/boot/dts/at91sam9m10g45ek.dts
index a3633bd..16a13cd 100644
--- a/arch/arm/boot/dts/at91sam9m10g45ek.dts
+++ b/arch/arm/boot/dts/at91sam9m10g45ek.dts
@@ -39,6 +39,7 @@
};
usart1: serial at fff90000 {
+ pinctrl-0 = <&pinctrl_uart0 &pinctrl_uart1_rts_cts>;
status = "okay";
};
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 12/16] arm: at91: dt: sam9263ek: use rts/cts pinctrl group for uart0
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (9 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 11/16] arm: at91: dt: sam9m10g45ek: use rts/cts pinctrl group for uart1 Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 13/16] arm: at91: dt: sam9g20ek: use rts/cts/dtr/dsr/dcd/ri " Jean-Christophe PLAGNIOL-VILLARD
` (3 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/boot/dts/at91sam9263ek.dts | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/at91sam9263ek.dts b/arch/arm/boot/dts/at91sam9263ek.dts
index f86ac4b..7cfe9d5 100644
--- a/arch/arm/boot/dts/at91sam9263ek.dts
+++ b/arch/arm/boot/dts/at91sam9263ek.dts
@@ -38,6 +38,7 @@
};
usart0: serial at fff8c000 {
+ pinctrl-0 = <&pinctrl_uart0 &pinctrl_uart0_rts_cts>;
status = "okay";
};
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 13/16] arm: at91: dt: sam9g20ek: use rts/cts/dtr/dsr/dcd/ri pinctrl group for uart0
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (10 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 12/16] arm: at91: dt: sam9263ek: use rts/cts pinctrl group for uart0 Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 14/16] MTD: atmel nand: fix gpio missing request Jean-Christophe PLAGNIOL-VILLARD
` (2 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/boot/dts/at91sam9g20ek_common.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi
index b06c0db..e33ab0a 100644
--- a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi
+++ b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi
@@ -35,6 +35,12 @@
};
usart0: serial at fffb0000 {
+ pinctrl-0 =
+ <&pinctrl_uart0
+ &pinctrl_uart0_rts_cts
+ &pinctrl_uart0_dtr_dsr
+ &pinctrl_uart0_dcd
+ &pinctrl_uart0_ri>;
status = "okay";
};
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 14/16] MTD: atmel nand: fix gpio missing request
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (11 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 13/16] arm: at91: dt: sam9g20ek: use rts/cts/dtr/dsr/dcd/ri " Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 15/16] arm: at91: dt: at91sam9 add nand pinctrl support Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 16/16] MTD: atmel_nand: add pinctrl consumer support Jean-Christophe PLAGNIOL-VILLARD
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
without this the gpio will not be muxed as a gpio by the current custom pinmux
or later by the pinctrl
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
drivers/mtd/nand/atmel_nand.c | 50 ++++++++++++++++++++++++++++++++++++++++-
1 file changed, 49 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 97ac671..7275ad4 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -583,8 +583,41 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
nand_chip->IO_ADDR_W = host->io_base;
nand_chip->cmd_ctrl = atmel_nand_cmd_ctrl;
- if (gpio_is_valid(host->board.rdy_pin))
+ if (gpio_is_valid(host->board.rdy_pin)) {
+ res = devm_gpio_request(&pdev->dev,
+ host->board.rdy_pin, "nand_rdy");
+ if (res < 0) {
+ dev_err(&pdev->dev,
+ "can't request rdy gpio %d\n", host->board.rdy_pin);
+ goto err_ecc_ioremap;
+ }
+
+ res = gpio_direction_input(host->board.rdy_pin);
+ if (res < 0) {
+ dev_err(&pdev->dev,
+ "can't request input direction rdy gpio %d\n", host->board.rdy_pin);
+ goto err_ecc_ioremap;
+ }
+
nand_chip->dev_ready = atmel_nand_device_ready;
+ }
+
+ if (gpio_is_valid(host->board.enable_pin)) {
+ res = devm_gpio_request(&pdev->dev,
+ host->board.enable_pin, "nand_enable");
+ if (res < 0) {
+ dev_err(&pdev->dev,
+ "can't request enable gpio %d\n", host->board.enable_pin);
+ goto err_ecc_ioremap;
+ }
+
+ res = gpio_direction_output(host->board.enable_pin, 1);
+ if (res < 0) {
+ dev_err(&pdev->dev,
+ "can't request output direction enable gpio %d\n", host->board.enable_pin);
+ goto err_ecc_ioremap;
+ }
+ }
nand_chip->ecc.mode = host->board.ecc_mode;
@@ -622,6 +655,21 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
atmel_nand_enable(host);
if (gpio_is_valid(host->board.det_pin)) {
+ res = devm_gpio_request(&pdev->dev,
+ host->board.det_pin, "nand_det");
+ if (res < 0) {
+ dev_err(&pdev->dev,
+ "can't request det gpio %d\n", host->board.det_pin);
+ goto err_no_card;
+ }
+
+ res = gpio_direction_input(host->board.det_pin);
+ if (res < 0) {
+ dev_err(&pdev->dev,
+ "can't request input direction det gpio %d\n", host->board.det_pin);
+ goto err_no_card;
+ }
+
if (gpio_get_value(host->board.det_pin)) {
printk(KERN_INFO "No SmartMedia card inserted.\n");
res = -ENXIO;
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 15/16] arm: at91: dt: at91sam9 add nand pinctrl support
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (12 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 14/16] MTD: atmel nand: fix gpio missing request Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-17 15:27 ` [PATCH 16/16] MTD: atmel_nand: add pinctrl consumer support Jean-Christophe PLAGNIOL-VILLARD
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/boot/dts/at91sam9260.dtsi | 10 ++++++++++
arch/arm/boot/dts/at91sam9263.dtsi | 10 ++++++++++
arch/arm/boot/dts/at91sam9g45.dtsi | 10 ++++++++++
arch/arm/boot/dts/at91sam9n12.dtsi | 10 ++++++++++
arch/arm/boot/dts/at91sam9x5.dtsi | 10 ++++++++++
5 files changed, 50 insertions(+)
diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi
index a3d7132..00f96ff 100644
--- a/arch/arm/boot/dts/at91sam9260.dtsi
+++ b/arch/arm/boot/dts/at91sam9260.dtsi
@@ -207,6 +207,14 @@
};
};
+ nand {
+ pinctrl_nand: nand-0 {
+ atmel,pins =
+ <2 13 0x0 0x1 /* PC13 gpio RDY pin pull_up */
+ 2 14 0x0 0x1>; /* PC14 gpio enable pin pull_up */
+ };
+ };
+
pioA: gpio at fffff400 {
compatible = "atmel,at91rm9200-gpio";
reg = <0xfffff400 0x200>;
@@ -372,6 +380,8 @@
>;
atmel,nand-addr-offset = <21>;
atmel,nand-cmd-offset = <22>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_nand>;
gpios = <&pioC 13 0
&pioC 14 0
0
diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi
index 8bc4ce7..bc3920e 100644
--- a/arch/arm/boot/dts/at91sam9263.dtsi
+++ b/arch/arm/boot/dts/at91sam9263.dtsi
@@ -154,6 +154,14 @@
};
};
+ nand {
+ pinctrl_nand: nand-0 {
+ atmel,pins =
+ <0 22 0x0 0x1 /* PA22 gpio RDY pin pull_up*/
+ 3 15 0x0 0x1>; /* PD15 gpio enable pin pull_up */
+ };
+ };
+
pioA: gpio at fffff200 {
compatible = "atmel,at91rm9200-gpio";
reg = <0xfffff200 0x200>;
@@ -271,6 +279,8 @@
>;
atmel,nand-addr-offset = <21>;
atmel,nand-cmd-offset = <22>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_nand>;
gpios = <&pioA 22 0
&pioD 15 0
0
diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
index 301458e..1ea95ab 100644
--- a/arch/arm/boot/dts/at91sam9g45.dtsi
+++ b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -186,6 +186,14 @@
};
};
+ nand {
+ pinctrl_nand: nand-0 {
+ atmel,pins =
+ <2 8 0x0 0x1 /* PC8 gpio RDY pin pull_up*/
+ 2 14 0x0 0x1>; /* PC14 gpio enable pin pull_up */
+ };
+ };
+
pioA: gpio at fffff200 {
compatible = "atmel,at91rm9200-gpio";
reg = <0xfffff200 0x200>;
@@ -344,6 +352,8 @@
>;
atmel,nand-addr-offset = <21>;
atmel,nand-cmd-offset = <22>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_nand>;
gpios = <&pioC 8 0
&pioC 14 0
0
diff --git a/arch/arm/boot/dts/at91sam9n12.dtsi b/arch/arm/boot/dts/at91sam9n12.dtsi
index 699b2f3..56aa1a0 100644
--- a/arch/arm/boot/dts/at91sam9n12.dtsi
+++ b/arch/arm/boot/dts/at91sam9n12.dtsi
@@ -189,6 +189,14 @@
};
};
+ nand {
+ pinctrl_nand: nand-0 {
+ atmel,pins =
+ <3 5 0x0 0x1 /* PD5 gpio RDY pin pull_up*/
+ 3 4 0x0 0x1>; /* PD4 gpio enable pin pull_up */
+ };
+ };
+
pioA: gpio at fffff400 {
compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
reg = <0xfffff400 0x200>;
@@ -295,6 +303,8 @@
>;
atmel,nand-addr-offset = <21>;
atmel,nand-cmd-offset = <22>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_nand>;
gpios = <&pioD 5 0
&pioD 4 0
0
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index 6482a85..b035fa6 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -195,6 +195,14 @@
};
};
+ nand {
+ pinctrl_nand: nand-0 {
+ atmel,pins =
+ <3 4 0x0 0x1 /* PD5 gpio RDY pin pull_up */
+ 3 5 0x0 0x1>; /* PD4 gpio enable pin pull_up */
+ };
+ };
+
pioA: gpio at fffff400 {
compatible = "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
reg = <0xfffff400 0x200>;
@@ -341,6 +349,8 @@
>;
atmel,nand-addr-offset = <21>;
atmel,nand-cmd-offset = <22>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_nand>;
gpios = <&pioD 5 0
&pioD 4 0
0
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 16/16] MTD: atmel_nand: add pinctrl consumer support
2012-09-17 15:26 ` [PATCH 01/16] ARM: at91: fix missing #interrupt-cells on gpio-controller Jean-Christophe PLAGNIOL-VILLARD
` (13 preceding siblings ...)
2012-09-17 15:27 ` [PATCH 15/16] arm: at91: dt: at91sam9 add nand pinctrl support Jean-Christophe PLAGNIOL-VILLARD
@ 2012-09-17 15:27 ` Jean-Christophe PLAGNIOL-VILLARD
14 siblings, 0 replies; 18+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-09-17 15:27 UTC (permalink / raw)
To: linux-arm-kernel
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
drivers/mtd/nand/atmel_nand.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 7275ad4..f48587b 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -39,6 +39,7 @@
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/platform_data/atmel.h>
+#include <linux/pinctrl/consumer.h>
#include <mach/cpu.h>
@@ -539,6 +540,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
struct resource *mem;
struct mtd_part_parser_data ppdata = {};
int res;
+ struct pinctrl *pinctrl;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mem) {
@@ -583,6 +585,13 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
nand_chip->IO_ADDR_W = host->io_base;
nand_chip->cmd_ctrl = atmel_nand_cmd_ctrl;
+ pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+ if (IS_ERR(pinctrl)) {
+ dev_err(host->dev, "Failed to request pinctrl\n");
+ res = PTR_ERR(pinctrl);
+ goto err_ecc_ioremap;
+ }
+
if (gpio_is_valid(host->board.rdy_pin)) {
res = devm_gpio_request(&pdev->dev,
host->board.rdy_pin, "nand_rdy");
--
1.7.10.4
^ permalink raw reply related [flat|nested] 18+ messages in thread