[PATCH v3 1/4] clocksource: move PXA timer to clocksource framework

[PATCH v3 1/4] clocksource: move PXA timer to clocksource framework

[Robert Jarzmik]

Move time.c from arch/arm/mach-pxa/time.c to
drivers/clocksource/pxa_timer.c.

Signed-off-by: Robert Jarzmik <robert.jarzmik-GANU6spQydw@public.gmane.org>
---
 arch/arm/mach-pxa/Makefile                                  | 2 +-
 drivers/clocksource/Makefile                                | 1 +
 arch/arm/mach-pxa/time.c => drivers/clocksource/pxa_timer.c | 0
 3 files changed, 2 insertions(+), 1 deletion(-)
 rename arch/arm/mach-pxa/time.c => drivers/clocksource/pxa_timer.c (100%)

diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index 648867a..2fe1824 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -4,7 +4,7 @@
 
 # Common support (must be linked before board specific support)
 obj-y				+= clock.o devices.o generic.o irq.o \
-				   time.o reset.o
+				   reset.o
 obj-$(CONFIG_PM)		+= pm.o sleep.o standby.o
 
 # Generic drivers that other drivers may depend upon
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 800b130..fc61ef8 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_ARCH_BCM2835)	+= bcm2835_timer.o
 obj-$(CONFIG_ARCH_MARCO)	+= timer-marco.o
 obj-$(CONFIG_ARCH_MOXART)	+= moxart_timer.o
 obj-$(CONFIG_ARCH_MXS)		+= mxs_timer.o
+obj-$(CONFIG_ARCH_PXA)		+= pxa_timer.o
 obj-$(CONFIG_ARCH_PRIMA2)	+= timer-prima2.o
 obj-$(CONFIG_ARCH_U300)		+= timer-u300.o
 obj-$(CONFIG_SUN4I_TIMER)	+= sun4i_timer.o
diff --git a/arch/arm/mach-pxa/time.c b/drivers/clocksource/pxa_timer.c
similarity index 100%
rename from arch/arm/mach-pxa/time.c
rename to drivers/clocksource/pxa_timer.c
-- 
2.0.0.rc2

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[PATCH v3 2/4] clocksource: add device-tree support for PXA timer

[Robert Jarzmik]

Add device-tree support to PXA platforms.
The driver still needs to maintain backward non device-tree
compatibility as well, which implies :
 - a non device-tree init function
 - a static registers base address in the driver

Signed-off-by: Robert Jarzmik <robert.jarzmik-GANU6spQydw@public.gmane.org>

---
Since V1: Daniel's review:
      - comments for registers
      - registers clean-up
      - mach includes removed
      - panic() removed
---
 drivers/clocksource/pxa_timer.c | 137 +++++++++++++++++++++++++++++-----------
 1 file changed, 101 insertions(+), 36 deletions(-)

diff --git a/drivers/clocksource/pxa_timer.c b/drivers/clocksource/pxa_timer.c
index fca174e..941f3f3 100644
--- a/drivers/clocksource/pxa_timer.c
+++ b/drivers/clocksource/pxa_timer.c
@@ -15,14 +15,30 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/clk.h>
 #include <linux/clockchips.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 #include <linux/sched_clock.h>
 
 #include <asm/div64.h>
-#include <asm/mach/irq.h>
-#include <asm/mach/time.h>
-#include <mach/regs-ost.h>
-#include <mach/irqs.h>
+
+#define OSMR0		0x00	/* OS Timer 0 Match Register */
+#define OSMR1		0x04	/* OS Timer 1 Match Register */
+#define OSMR2		0x08	/* OS Timer 2 Match Register */
+#define OSMR3		0x0C	/* OS Timer 3 Match Register */
+
+#define OSCR		0x10	/* OS Timer Counter Register */
+#define OSSR		0x14	/* OS Timer Status Register */
+#define OWER		0x18	/* OS Timer Watchdog Enable Register */
+#define OIER		0x1C	/* OS Timer Interrupt Enable Register */
+
+#define OSSR_M3		(1 << 3)	/* Match status channel 3 */
+#define OSSR_M2		(1 << 2)	/* Match status channel 2 */
+#define OSSR_M1		(1 << 1)	/* Match status channel 1 */
+#define OSSR_M0		(1 << 0)	/* Match status channel 0 */
+
+#define OIER_E0		(1 << 0)	/* Interrupt enable channel 0 */
 
 /*
  * This is PXA's sched_clock implementation. This has a resolution
@@ -33,9 +49,14 @@
  * calls to sched_clock() which should always be the case in practice.
  */
 
+#define timer_readl(reg) readl_relaxed(timer_base + (reg))
+#define timer_writel(val, reg) writel_relaxed((val), timer_base + (reg))
+
+static void __iomem *timer_base;
+
 static u64 notrace pxa_read_sched_clock(void)
 {
-	return readl_relaxed(OSCR);
+	return timer_readl(OSCR);
 }
 
 
@@ -47,8 +68,8 @@ pxa_ost0_interrupt(int irq, void *dev_id)
 	struct clock_event_device *c = dev_id;
 
 	/* Disarm the compare/match, signal the event. */
-	writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
-	writel_relaxed(OSSR_M0, OSSR);
+	timer_writel(timer_readl(OIER) & ~OIER_E0, OIER);
+	timer_writel(OSSR_M0, OSSR);
 	c->event_handler(c);
 
 	return IRQ_HANDLED;
@@ -59,10 +80,10 @@ pxa_osmr0_set_next_event(unsigned long delta, struct clock_event_device *dev)
 {
 	unsigned long next, oscr;
 
-	writel_relaxed(readl_relaxed(OIER) | OIER_E0, OIER);
-	next = readl_relaxed(OSCR) + delta;
-	writel_relaxed(next, OSMR0);
-	oscr = readl_relaxed(OSCR);
+	timer_writel(timer_readl(OIER) | OIER_E0, OIER);
+	next = timer_readl(OSCR) + delta;
+	timer_writel(next, OSMR0);
+	oscr = timer_readl(OSCR);
 
 	return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
 }
@@ -72,15 +93,15 @@ pxa_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *dev)
 {
 	switch (mode) {
 	case CLOCK_EVT_MODE_ONESHOT:
-		writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
-		writel_relaxed(OSSR_M0, OSSR);
+		timer_writel(timer_readl(OIER) & ~OIER_E0, OIER);
+		timer_writel(OSSR_M0, OSSR);
 		break;
 
 	case CLOCK_EVT_MODE_UNUSED:
 	case CLOCK_EVT_MODE_SHUTDOWN:
 		/* initializing, released, or preparing for suspend */
-		writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
-		writel_relaxed(OSSR_M0, OSSR);
+		timer_writel(timer_readl(OIER) & ~OIER_E0, OIER);
+		timer_writel(OSSR_M0, OSSR);
 		break;
 
 	case CLOCK_EVT_MODE_RESUME:
@@ -94,12 +115,12 @@ static unsigned long osmr[4], oier, oscr;
 
 static void pxa_timer_suspend(struct clock_event_device *cedev)
 {
-	osmr[0] = readl_relaxed(OSMR0);
-	osmr[1] = readl_relaxed(OSMR1);
-	osmr[2] = readl_relaxed(OSMR2);
-	osmr[3] = readl_relaxed(OSMR3);
-	oier = readl_relaxed(OIER);
-	oscr = readl_relaxed(OSCR);
+	osmr[0] = timer_readl(OSMR0);
+	osmr[1] = timer_readl(OSMR1);
+	osmr[2] = timer_readl(OSMR2);
+	osmr[3] = timer_readl(OSMR3);
+	oier = timer_readl(OIER);
+	oscr = timer_readl(OSCR);
 }
 
 static void pxa_timer_resume(struct clock_event_device *cedev)
@@ -113,12 +134,12 @@ static void pxa_timer_resume(struct clock_event_device *cedev)
 	if (osmr[0] - oscr < MIN_OSCR_DELTA)
 		osmr[0] += MIN_OSCR_DELTA;
 
-	writel_relaxed(osmr[0], OSMR0);
-	writel_relaxed(osmr[1], OSMR1);
-	writel_relaxed(osmr[2], OSMR2);
-	writel_relaxed(osmr[3], OSMR3);
-	writel_relaxed(oier, OIER);
-	writel_relaxed(oscr, OSCR);
+	timer_writel(osmr[0], OSMR0);
+	timer_writel(osmr[1], OSMR1);
+	timer_writel(osmr[2], OSMR2);
+	timer_writel(osmr[3], OSMR3);
+	timer_writel(oier, OIER);
+	timer_writel(oscr, OSCR);
 }
 #else
 #define pxa_timer_suspend NULL
@@ -142,21 +163,65 @@ static struct irqaction pxa_ost0_irq = {
 	.dev_id		= &ckevt_pxa_osmr0,
 };
 
-void __init pxa_timer_init(void)
+static void pxa_timer_common_init(int irq, unsigned long clock_tick_rate)
 {
-	unsigned long clock_tick_rate = get_clock_tick_rate();
-
-	writel_relaxed(0, OIER);
-	writel_relaxed(OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3, OSSR);
+	timer_writel(0, OIER);
+	timer_writel(OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3, OSSR);
 
 	sched_clock_register(pxa_read_sched_clock, 32, clock_tick_rate);
 
 	ckevt_pxa_osmr0.cpumask = cpumask_of(0);
 
-	setup_irq(IRQ_OST0, &pxa_ost0_irq);
+	setup_irq(irq, &pxa_ost0_irq);
 
-	clocksource_mmio_init(OSCR, "oscr0", clock_tick_rate, 200, 32,
-		clocksource_mmio_readl_up);
+	clocksource_mmio_init(timer_base + OSCR, "oscr0", clock_tick_rate, 200,
+			      32, clocksource_mmio_readl_up);
 	clockevents_config_and_register(&ckevt_pxa_osmr0, clock_tick_rate,
-		MIN_OSCR_DELTA * 2, 0x7fffffff);
+					MIN_OSCR_DELTA * 2, 0x7fffffff);
+}
+
+static void __init pxa_timer_dt_init(struct device_node *np)
+{
+	struct clk *clk;
+	int irq;
+
+	/* timer registers are shared with watchdog timer */
+	timer_base = of_iomap(np, 0);
+	if (!timer_base)
+		panic("%s: unable to map resource\n", np->name);
+
+	clk = of_clk_get(np, 0);
+	if (IS_ERR(clk)) {
+		pr_crit("%s: unable to get clk\n", np->name);
+		return;
+	}
+	clk_prepare_enable(clk);
+
+	/* we are only interested in OS-timer0 irq */
+	irq = irq_of_parse_and_map(np, 0);
+	if (irq <= 0) {
+		pr_crit("%s: unable to parse OS-timer0 irq\n", np->name);
+		return;
+	}
+
+	pxa_timer_common_init(irq, clk_get_rate(clk));
+}
+CLOCKSOURCE_OF_DECLARE(pxa_timer, "marvell,pxa-timer", pxa_timer_dt_init);
+
+/*
+ * Legacy timer init for non device-tree boards.
+ */
+void __init pxa_timer_nodt_init(int irq, void __iomem *base,
+	unsigned long clock_tick_rate)
+{
+	struct clk *clk;
+
+	timer_base = base;
+	clk = clk_get(NULL, "OSTIMER0");
+	if (clk && !IS_ERR(clk))
+		clk_prepare_enable(clk);
+	else
+		pr_crit("%s: unable to get clk\n", __func__);
+
+	pxa_timer_common_init(irq, clock_tick_rate);
 }
-- 
2.0.0.rc2

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[PATCH v3 4/4] arm: pxa: add non device-tree timer link to clocksource

[Robert Jarzmik]

As clocksource pxa_timer was moved to clocksource framework, the
pxa_timer initialization needs to be a bit amended, to pass the
necessary informations to clocksource, ie :
 - the timer interrupt (mach specific)
 - the timer registers base (ditto)
 - the timer clockrate

Signed-off-by: Robert Jarzmik <robert.jarzmik-GANU6spQydw@public.gmane.org>

---
Since V2: Arnd's comment : moved extern declaration into .h file
---
 arch/arm/mach-pxa/generic.c | 11 +++++++++++
 include/clocksource/pxa.h   | 18 ++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 include/clocksource/pxa.h

diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 4225417..6f38e1a 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -25,11 +25,13 @@
 #include <asm/mach/map.h>
 #include <asm/mach-types.h>
 
+#include <mach/irqs.h>
 #include <mach/reset.h>
 #include <mach/smemc.h>
 #include <mach/pxa3xx-regs.h>
 
 #include "generic.h"
+#include <clocksource/pxa.h>
 
 void clear_reset_status(unsigned int mask)
 {
@@ -57,6 +59,15 @@ unsigned long get_clock_tick_rate(void)
 EXPORT_SYMBOL(get_clock_tick_rate);
 
 /*
+ * For non device-tree builds, keep legacy timer init
+ */
+void pxa_timer_init(void)
+{
+	pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
+			    get_clock_tick_rate());
+}
+
+/*
  * Get the clock frequency as reflected by CCCR and the turbo flag.
  * We assume these values have been applied via a fcs.
  * If info is not 0 we also display the current settings.
diff --git a/include/clocksource/pxa.h b/include/clocksource/pxa.h
new file mode 100644
index 0000000..1efbe5a
--- /dev/null
+++ b/include/clocksource/pxa.h
@@ -0,0 +1,18 @@
+/*
+ * PXA clocksource, clockevents, and OST interrupt handlers.
+ *
+ * Copyright (C) 2014 Robert Jarzmik
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ */
+
+#ifndef _CLOCKSOURCE_PXA_H
+#define _CLOCKSOURCE_PXA_H
+
+extern void pxa_timer_nodt_init(int irq, void __iomem *base,
+			   unsigned long clock_tick_rate);
+
+#endif
-- 
2.0.0.rc2

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Re: [PATCH v3 4/4] arm: pxa: add non device-tree timer link to clocksource

[Daniel Lezcano]

On 07/14/2014 06:52 PM, Robert Jarzmik wrote:
> As clocksource pxa_timer was moved to clocksource framework, the
> pxa_timer initialization needs to be a bit amended, to pass the
> necessary informations to clocksource, ie :
>   - the timer interrupt (mach specific)
>   - the timer registers base (ditto)
>   - the timer clockrate
>
> Signed-off-by: Robert Jarzmik <robert.jarzmik-GANU6spQydw@public.gmane.org>
>
> ---
> Since V2: Arnd's comment : moved extern declaration into .h file
> ---

Shall I take the patches 4-5 also ?

Arnd ?

Thanks

   -- Daniel

>   arch/arm/mach-pxa/generic.c | 11 +++++++++++
>   include/clocksource/pxa.h   | 18 ++++++++++++++++++
>   2 files changed, 29 insertions(+)
>   create mode 100644 include/clocksource/pxa.h
>
> diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
> index 4225417..6f38e1a 100644
> --- a/arch/arm/mach-pxa/generic.c
> +++ b/arch/arm/mach-pxa/generic.c
> @@ -25,11 +25,13 @@
>   #include <asm/mach/map.h>
>   #include <asm/mach-types.h>
>
> +#include <mach/irqs.h>
>   #include <mach/reset.h>
>   #include <mach/smemc.h>
>   #include <mach/pxa3xx-regs.h>
>
>   #include "generic.h"
> +#include <clocksource/pxa.h>
>
>   void clear_reset_status(unsigned int mask)
>   {
> @@ -57,6 +59,15 @@ unsigned long get_clock_tick_rate(void)
>   EXPORT_SYMBOL(get_clock_tick_rate);
>
>   /*
> + * For non device-tree builds, keep legacy timer init
> + */
> +void pxa_timer_init(void)
> +{
> +	pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
> +			    get_clock_tick_rate());
> +}
> +
> +/*
>    * Get the clock frequency as reflected by CCCR and the turbo flag.
>    * We assume these values have been applied via a fcs.
>    * If info is not 0 we also display the current settings.
> diff --git a/include/clocksource/pxa.h b/include/clocksource/pxa.h
> new file mode 100644
> index 0000000..1efbe5a
> --- /dev/null
> +++ b/include/clocksource/pxa.h
> @@ -0,0 +1,18 @@
> +/*
> + * PXA clocksource, clockevents, and OST interrupt handlers.
> + *
> + * Copyright (C) 2014 Robert Jarzmik
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; version 2 of the License.
> + *
> + */
> +
> +#ifndef _CLOCKSOURCE_PXA_H
> +#define _CLOCKSOURCE_PXA_H
> +
> +extern void pxa_timer_nodt_init(int irq, void __iomem *base,
> +			   unsigned long clock_tick_rate);
> +
> +#endif
>


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Re: [PATCH v3 4/4] arm: pxa: add non device-tree timer link to clocksource

[Robert Jarzmik]

Daniel Lezcano <daniel.lezcano-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> writes:

> On 07/14/2014 06:52 PM, Robert Jarzmik wrote:
>> As clocksource pxa_timer was moved to clocksource framework, the
>> pxa_timer initialization needs to be a bit amended, to pass the
>> necessary informations to clocksource, ie :
>>   - the timer interrupt (mach specific)
>>   - the timer registers base (ditto)
>>   - the timer clockrate
>>
>> Signed-off-by: Robert Jarzmik <robert.jarzmik-GANU6spQydw@public.gmane.org>
>>
>> ---
>> Since V2: Arnd's comment : moved extern declaration into .h file
>> ---
>
> Shall I take the patches 4-5 also ?
Mmm you mean patch 4 I think.
Then I'd like you too, because it's linked in the serie, and without it the
former non-DT platforms break, hence I'd like all the serie to go through 1
tree.

Yet we'd need Haojian's ack here. Haojian, would you give your blessing on the
serie and agree that Daniel carries all the patches including patch 4/4 ?

Cheers.

--
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[PATCH ] ARM: pxa: fix section mismatch warning for pxa_timer_nodt_init

[Arnd Bergmann]

commit a38b1f60b5245a3 ("ARM: pxa: Add non device-tree timer link to
clocksource") introduced a harmless section mismatch warning for
all pxa platforms, by introducing a new pxa_timer_init() function
that is not marked __init but that calls pxa_timer_nodt_init(),
which is. The function is only called at init time, so it is safe
to also annotate it this way.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
Daniel, please apply on top of Robert's patch series.

diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 630fa916bbc6..04b013fbc98f 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -61,7 +61,7 @@ EXPORT_SYMBOL(get_clock_tick_rate);
 /*
  * For non device-tree builds, keep legacy timer init
  */
-void pxa_timer_init(void)
+void __init pxa_timer_init(void)
 {
 	pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
 			    get_clock_tick_rate());

Re: [PATCH ] ARM: pxa: fix section mismatch warning for pxa_timer_nodt_init

[Robert Jarzmik]

Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org> writes:

> commit a38b1f60b5245a3 ("ARM: pxa: Add non device-tree timer link to
> clocksource") introduced a harmless section mismatch warning for
> all pxa platforms, by introducing a new pxa_timer_init() function
> that is not marked __init but that calls pxa_timer_nodt_init(),
> which is. The function is only called at init time, so it is safe
> to also annotate it this way.
>
> Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>

Indeed.

Acked-by: Robert Jarzmik <robert.jarzmik-GANU6spQydw@public.gmane.org>

Cheers.

--
Robert
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Re: [PATCH ] ARM: pxa: fix section mismatch warning for pxa_timer_nodt_init

[Daniel Lezcano]

On 07/26/2014 08:50 PM, Arnd Bergmann wrote:
> commit a38b1f60b5245a3 ("ARM: pxa: Add non device-tree timer link to
> clocksource") introduced a harmless section mismatch warning for
> all pxa platforms, by introducing a new pxa_timer_init() function
> that is not marked __init but that calls pxa_timer_nodt_init(),
> which is. The function is only called at init time, so it is safe
> to also annotate it this way.
>
> Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
> ---
> Daniel, please apply on top of Robert's patch series.

Applied thanks!

   -- Daniel

>
> diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
> index 630fa916bbc6..04b013fbc98f 100644
> --- a/arch/arm/mach-pxa/generic.c
> +++ b/arch/arm/mach-pxa/generic.c
> @@ -61,7 +61,7 @@ EXPORT_SYMBOL(get_clock_tick_rate);
>   /*
>    * For non device-tree builds, keep legacy timer init
>    */
> -void pxa_timer_init(void)
> +void __init pxa_timer_init(void)
>   {
>   	pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
>   			    get_clock_tick_rate());
>


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Re: [PATCH ] ARM: pxa: fix section mismatch warning for pxa_timer_nodt_init

[Arnd Bergmann]

On Saturday 26 July 2014 20:50:36 Arnd Bergmann wrote:
> commit a38b1f60b5245a3 ("ARM: pxa: Add non device-tree timer link to
> clocksource") introduced a harmless section mismatch warning for
> all pxa platforms, by introducing a new pxa_timer_init() function
> that is not marked __init but that calls pxa_timer_nodt_init(),
> which is. The function is only called at init time, so it is safe
> to also annotate it this way.
> 
> Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
> 

Apparently this is not merged yet, should we take it through arm-soc?

diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 630fa916bbc6..04b013fbc98f 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -61,7 +61,7 @@ EXPORT_SYMBOL(get_clock_tick_rate);
 /*
  * For non device-tree builds, keep legacy timer init
  */
-void pxa_timer_init(void)
+void __init pxa_timer_init(void)
 {
        pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
                            get_clock_tick_rate());
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Re : Re: [PATCH ] ARM: pxa: fix section mismatch warning for pxa_timer_nodt_init

[robert.jarzmik]

Yes please Arnd, I'm still out for 1.5 week, so it would be great if you take that through your tree with my ack. Thanks.

Robert

PS: I know, top-posting is madness, but I'm really limited by technology right now.

----- Mail d'origine -----
De: Arnd Bergmann <arnd@arndb.de>
À: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>, Daniel Lezcano <daniel.lezcano@linaro.org>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>, arm@kernel.org
Envoyé: Sun, 07 Sep 2014 23:06:05 +0200 (CEST)
Objet: Re: [PATCH ] ARM: pxa: fix section mismatch warning for pxa_timer_nodt_init

On Saturday 26 July 2014 20:50:36 Arnd Bergmann wrote:
> commit a38b1f60b5245a3 ("ARM: pxa: Add non device-tree timer link to
> clocksource") introduced a harmless section mismatch warning for
> all pxa platforms, by introducing a new pxa_timer_init() function
> that is not marked __init but that calls pxa_timer_nodt_init(),
> which is. The function is only called at init time, so it is safe
> to also annotate it this way.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> 

Apparently this is not merged yet, should we take it through arm-soc?

diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 630fa916bbc6..04b013fbc98f 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -61,7 +61,7 @@ EXPORT_SYMBOL(get_clock_tick_rate);
 /*
 * For non device-tree builds, keep legacy timer init
 */
-void pxa_timer_init(void)
+void __init pxa_timer_init(void)
 {
 pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
 get_clock_tick_rate());

Re: [PATCH v3 4/4] arm: pxa: add non device-tree timer link to clocksource

[Daniel Lezcano]

On 07/21/2014 08:15 PM, Robert Jarzmik wrote:
> Daniel Lezcano <daniel.lezcano@linaro.org> writes:
>
>> On 07/14/2014 06:52 PM, Robert Jarzmik wrote:
>>> As clocksource pxa_timer was moved to clocksource framework, the
>>> pxa_timer initialization needs to be a bit amended, to pass the
>>> necessary informations to clocksource, ie :
>>>    - the timer interrupt (mach specific)
>>>    - the timer registers base (ditto)
>>>    - the timer clockrate
>>>
>>> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
>>>
>>> ---
>>> Since V2: Arnd's comment : moved extern declaration into .h file
>>> ---
>>
>> Shall I take the patches 4-5 also ?
> Mmm you mean patch 4 I think.
> Then I'd like you too, because it's linked in the serie, and without it the
> former non-DT platforms break, hence I'd like all the serie to go through 1
> tree.
>
> Yet we'd need Haojian's ack here. Haojian, would you give your blessing on the
> serie and agree that Daniel carries all the patches including patch 4/4 ?

Hi,

May be I missed it but I don't see the Haojian's ack.

Thanks
   -- Daniel


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Re: [PATCH v3 4/4] arm: pxa: add non device-tree timer link to clocksource

[Robert Jarzmik]

Daniel Lezcano <daniel.lezcano-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> writes:

> On 07/21/2014 08:15 PM, Robert Jarzmik wrote:
>> Daniel Lezcano <daniel.lezcano-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> writes:
>>
>>> On 07/14/2014 06:52 PM, Robert Jarzmik wrote:
>>>> As clocksource pxa_timer was moved to clocksource framework, the
>>>> pxa_timer initialization needs to be a bit amended, to pass the
>>>> necessary informations to clocksource, ie :
>>>>    - the timer interrupt (mach specific)
>>>>    - the timer registers base (ditto)
>>>>    - the timer clockrate
>>>>
>>>> Signed-off-by: Robert Jarzmik <robert.jarzmik-GANU6spQydw@public.gmane.org>
>>>>
>>>> ---
>>>> Since V2: Arnd's comment : moved extern declaration into .h file
>>>> ---
>>>

> Hi,
>
> May be I missed it but I don't see the Haojian's ack.
>
> Thanks
>   -- Daniel

You're right, I scanned through my mail and didn't find the ack.
Haojian, would you review this one please ?

It's here :
http://lists.infradead.org/pipermail/linux-arm-kernel/2014-July/272311.html

Cheers.

-- 
Robert
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[PATCH v3 3/4] arm: pxa: add CLKSRC_OF dependency

[Robert Jarzmik]

Select CLKSRC_OF for PXA architectures.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
---
 arch/arm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 87b63fd..472dea1 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -644,6 +644,7 @@ config ARCH_PXA
 	select AUTO_ZRELADDR
 	select CLKDEV_LOOKUP
 	select CLKSRC_MMIO
+	select CLKSRC_OF
 	select GENERIC_CLOCKEVENTS
 	select GPIO_PXA
 	select HAVE_IDE
-- 
2.0.0.rc2