* [PATCH 01/10] mfd: twl-core: Clean up module id lookup and definitions
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 02/10] mfd: twl-core: No need to check for invalid subchip ID Peter Ujfalusi
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
Use enums for all module definitions:
twl_module_ids for common functionality among twl4030/twl6030
twl4030_module_ids for twl4030 specific ids
twl6030_module_ids for twl6030 specific ids
In this way the list can be managed easier when new functionality going to
be implemented.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 105 +++++++++++++++++++++++-------------------------
include/linux/i2c/twl.h | 66 ++++++++++++++++--------------
2 files changed, 86 insertions(+), 85 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 4f3baad..b781cdd 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -74,8 +74,6 @@
#define SUB_CHIP_ID3 3
#define SUB_CHIP_ID_INVAL 0xff
-#define TWL_MODULE_LAST TWL4030_MODULE_LAST
-
/* Base Address defns for twl4030_map[] */
/* subchip/slave 0 - USB ID */
@@ -94,10 +92,7 @@
#define TWL4030_BASEADD_MADC 0x0000
#define TWL4030_BASEADD_MAIN_CHARGE 0x0074
#define TWL4030_BASEADD_PRECHARGE 0x00AA
-#define TWL4030_BASEADD_PWM0 0x00F8
-#define TWL4030_BASEADD_PWM1 0x00FB
-#define TWL4030_BASEADD_PWMA 0x00EF
-#define TWL4030_BASEADD_PWMB 0x00F1
+#define TWL4030_BASEADD_PWM 0x00F8
#define TWL4030_BASEADD_KEYPAD 0x00D2
#define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
@@ -117,7 +112,7 @@
/* subchip/slave 0 0x48 - POWER */
#define TWL6030_BASEADD_RTC 0x0000
-#define TWL6030_BASEADD_MEM 0x0017
+#define TWL6030_BASEADD_SECURED_REG 0x0017
#define TWL6030_BASEADD_PM_MASTER 0x001F
#define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
#define TWL6030_BASEADD_PM_MISC 0x00E2
@@ -132,6 +127,7 @@
#define TWL6030_BASEADD_PIH 0x00D0
#define TWL6030_BASEADD_CHARGER 0x00E0
#define TWL6025_BASEADD_CHARGER 0x00DA
+#define TWL6030_BASEADD_LED 0x00F4
/* subchip/slave 2 0x4A - DFT */
#define TWL6030_BASEADD_DIEID 0x00C0
@@ -188,34 +184,33 @@ static struct twl_mapping twl4030_map[] = {
* so they continue to match the order in this table.
*/
+ /* Common IPs */
{ 0, TWL4030_BASEADD_USB },
+ { 1, TWL4030_BASEADD_PIH },
+ { 2, TWL4030_BASEADD_MAIN_CHARGE },
+ { 3, TWL4030_BASEADD_PM_MASTER },
+ { 3, TWL4030_BASEADD_PM_RECEIVER },
+
+ { 3, TWL4030_BASEADD_RTC },
+ { 2, TWL4030_BASEADD_PWM },
+ { 2, TWL4030_BASEADD_LED },
+ { 3, TWL4030_BASEADD_SECURED_REG },
+
+ /* TWL4030 specific IPs */
{ 1, TWL4030_BASEADD_AUDIO_VOICE },
{ 1, TWL4030_BASEADD_GPIO },
{ 1, TWL4030_BASEADD_INTBR },
- { 1, TWL4030_BASEADD_PIH },
-
{ 1, TWL4030_BASEADD_TEST },
{ 2, TWL4030_BASEADD_KEYPAD },
+
{ 2, TWL4030_BASEADD_MADC },
{ 2, TWL4030_BASEADD_INTERRUPTS },
- { 2, TWL4030_BASEADD_LED },
-
- { 2, TWL4030_BASEADD_MAIN_CHARGE },
{ 2, TWL4030_BASEADD_PRECHARGE },
- { 2, TWL4030_BASEADD_PWM0 },
- { 2, TWL4030_BASEADD_PWM1 },
- { 2, TWL4030_BASEADD_PWMA },
-
- { 2, TWL4030_BASEADD_PWMB },
- { 2, TWL5031_BASEADD_ACCESSORY },
- { 2, TWL5031_BASEADD_INTERRUPTS },
{ 3, TWL4030_BASEADD_BACKUP },
{ 3, TWL4030_BASEADD_INT },
- { 3, TWL4030_BASEADD_PM_MASTER },
- { 3, TWL4030_BASEADD_PM_RECEIVER },
- { 3, TWL4030_BASEADD_RTC },
- { 3, TWL4030_BASEADD_SECURED_REG },
+ { 2, TWL5031_BASEADD_ACCESSORY },
+ { 2, TWL5031_BASEADD_INTERRUPTS },
};
static struct regmap_config twl4030_regmap_config[4] = {
@@ -251,35 +246,25 @@ static struct twl_mapping twl6030_map[] = {
* <linux/i2c/twl.h> defines for TWL4030_MODULE_*
* so they continue to match the order in this table.
*/
- { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
- { SUB_CHIP_ID_INVAL, TWL6030_BASEADD_AUDIO },
- { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
- { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
-
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
- { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
-
- { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
- { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
- { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
- { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
- { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
-
- { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
- { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
-
- { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
- { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
- { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
- { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
- { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
+
+ /* Common IPs */
+ { 1, TWL6030_BASEADD_USB },
+ { 1, TWL6030_BASEADD_PIH },
+ { 1, TWL6030_BASEADD_CHARGER },
+ { 0, TWL6030_BASEADD_PM_MASTER },
+ { 0, TWL6030_BASEADD_PM_SLAVE_MISC },
+
+ { 0, TWL6030_BASEADD_RTC },
+ { 1, TWL6030_BASEADD_PWM },
+ { 1, TWL6030_BASEADD_LED },
+ { 0, TWL6030_BASEADD_SECURED_REG },
+
+ /* TWL6030 specific IPs */
+ { 0, TWL6030_BASEADD_ZERO },
+ { 1, TWL6030_BASEADD_ZERO },
+ { 2, TWL6030_BASEADD_ZERO },
+ { 1, TWL6030_BASEADD_GPADC_CTRL },
+ { 1, TWL6030_BASEADD_GASGAUGE },
};
static struct regmap_config twl6030_regmap_config[3] = {
@@ -305,6 +290,14 @@ static struct regmap_config twl6030_regmap_config[3] = {
/*----------------------------------------------------------------------*/
+static inline int twl_get_last_module(void)
+{
+ if (twl_class_is_4030())
+ return TWL4030_MODULE_LAST;
+ else
+ return TWL6030_MODULE_LAST;
+}
+
/* Exported Functions */
/**
@@ -325,7 +318,7 @@ int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
int sid;
struct twl_client *twl;
- if (unlikely(mod_no >= TWL_MODULE_LAST)) {
+ if (unlikely(mod_no >= twl_get_last_module())) {
pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
return -EPERM;
}
@@ -367,7 +360,7 @@ int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
int sid;
struct twl_client *twl;
- if (unlikely(mod_no >= TWL_MODULE_LAST)) {
+ if (unlikely(mod_no >= twl_get_last_module())) {
pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
return -EPERM;
}
@@ -1228,6 +1221,10 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
if ((id->driver_data) & TWL6030_CLASS) {
twl_id = TWL6030_CLASS_ID;
twl_map = &twl6030_map[0];
+ /* The charger base address is different in twl6025 */
+ if ((id->driver_data) & TWL6025_SUBCLASS)
+ twl_map[TWL_MODULE_MAIN_CHARGE].base =
+ TWL6025_BASEADD_CHARGER;
twl_regmap_config = twl6030_regmap_config;
num_slaves = TWL_NUM_SLAVES - 1;
} else {
diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 1ff54b1..72adc88 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -39,51 +39,55 @@
* address each module uses within a given i2c slave.
*/
+/* Module IDs for similar functionalities found in twl4030/twl6030 */
+enum twl_module_ids {
+ TWL_MODULE_USB,
+ TWL_MODULE_PIH,
+ TWL_MODULE_MAIN_CHARGE,
+ TWL_MODULE_PM_MASTER,
+ TWL_MODULE_PM_RECEIVER,
+
+ TWL_MODULE_RTC,
+ TWL_MODULE_PWM,
+ TWL_MODULE_LED,
+ TWL_MODULE_SECURED_REG,
+
+ TWL_MODULE_LAST,
+};
+
+/* Modules only available in twl4030 series */
enum twl4030_module_ids {
- TWL4030_MODULE_USB = 0, /* Slave 0 (i2c address 0x48) */
- TWL4030_MODULE_AUDIO_VOICE, /* Slave 1 (i2c address 0x49) */
+ TWL4030_MODULE_AUDIO_VOICE = TWL_MODULE_LAST,
TWL4030_MODULE_GPIO,
TWL4030_MODULE_INTBR,
- TWL4030_MODULE_PIH,
-
TWL4030_MODULE_TEST,
- TWL4030_MODULE_KEYPAD, /* Slave 2 (i2c address 0x4a) */
+ TWL4030_MODULE_KEYPAD,
+
TWL4030_MODULE_MADC,
TWL4030_MODULE_INTERRUPTS,
- TWL4030_MODULE_LED,
-
- TWL4030_MODULE_MAIN_CHARGE,
TWL4030_MODULE_PRECHARGE,
- TWL4030_MODULE_PWM0,
- TWL4030_MODULE_PWM1,
- TWL4030_MODULE_PWMA,
+ TWL4030_MODULE_BACKUP,
+ TWL4030_MODULE_INT,
- TWL4030_MODULE_PWMB,
TWL5031_MODULE_ACCESSORY,
TWL5031_MODULE_INTERRUPTS,
- TWL4030_MODULE_BACKUP, /* Slave 3 (i2c address 0x4b) */
- TWL4030_MODULE_INT,
- TWL4030_MODULE_PM_MASTER,
- TWL4030_MODULE_PM_RECEIVER,
- TWL4030_MODULE_RTC,
- TWL4030_MODULE_SECURED_REG,
TWL4030_MODULE_LAST,
};
-/* Similar functionalities implemented in TWL4030/6030 */
-#define TWL_MODULE_USB TWL4030_MODULE_USB
-#define TWL_MODULE_PIH TWL4030_MODULE_PIH
-#define TWL_MODULE_MAIN_CHARGE TWL4030_MODULE_MAIN_CHARGE
-#define TWL_MODULE_PM_MASTER TWL4030_MODULE_PM_MASTER
-#define TWL_MODULE_PM_RECEIVER TWL4030_MODULE_PM_RECEIVER
-#define TWL_MODULE_RTC TWL4030_MODULE_RTC
-#define TWL_MODULE_PWM TWL4030_MODULE_PWM0
-#define TWL_MODULE_LED TWL4030_MODULE_LED
-
-#define TWL6030_MODULE_ID0 13
-#define TWL6030_MODULE_ID1 14
-#define TWL6030_MODULE_ID2 15
+/* Modules only available in twl6030 series */
+enum twl6030_module_ids {
+ TWL6030_MODULE_ID0 = TWL_MODULE_LAST,
+ TWL6030_MODULE_ID1,
+ TWL6030_MODULE_ID2,
+ TWL6030_MODULE_GPADC,
+ TWL6030_MODULE_GASGAUGE,
+
+ TWL6030_MODULE_LAST,
+};
+
+/* Until the clients has been converted to use TWL_MODULE_LED */
+#define TWL4030_MODULE_LED TWL_MODULE_LED
#define GPIO_INTR_OFFSET 0
#define KEYPAD_INTR_OFFSET 1
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 02/10] mfd: twl-core: No need to check for invalid subchip ID
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 01/10] mfd: twl-core: Clean up module id lookup and definitions Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 03/10] mfd: twl-core: Use the lookup table to find the correct subchip for the modules Peter Ujfalusi
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
The module id table no longer can have invalid/unused entries.
No need for checking the ID for validity.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index b781cdd..fa1a5a0 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -72,7 +72,6 @@
#define SUB_CHIP_ID1 1
#define SUB_CHIP_ID2 2
#define SUB_CHIP_ID3 3
-#define SUB_CHIP_ID_INVAL 0xff
/* Base Address defns for twl4030_map[] */
@@ -326,12 +325,8 @@ int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
pr_err("%s: not initialized\n", DRIVER_NAME);
return -EPERM;
}
+
sid = twl_map[mod_no].sid;
- if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
- pr_err("%s: module %d is not part of the pmic\n",
- DRIVER_NAME, mod_no);
- return -EINVAL;
- }
twl = &twl_modules[sid];
ret = regmap_bulk_write(twl->regmap, twl_map[mod_no].base + reg,
@@ -368,12 +363,8 @@ int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
pr_err("%s: not initialized\n", DRIVER_NAME);
return -EPERM;
}
+
sid = twl_map[mod_no].sid;
- if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
- pr_err("%s: module %d is not part of the pmic\n",
- DRIVER_NAME, mod_no);
- return -EINVAL;
- }
twl = &twl_modules[sid];
ret = regmap_bulk_read(twl->regmap, twl_map[mod_no].base + reg,
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 03/10] mfd: twl-core: Use the lookup table to find the correct subchip for the modules
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 01/10] mfd: twl-core: Clean up module id lookup and definitions Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 02/10] mfd: twl-core: No need to check for invalid subchip ID Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 04/10] mfd: twl-core: Allocate twl_modules dynamically Peter Ujfalusi
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
Instead of using SUB_CHIP_ID* or magic numbers use the twl_mapping table to
look for the subchip ID.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 56 ++++++++++++++++++++++++--------------------------
1 file changed, 27 insertions(+), 29 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index fa1a5a0..f07317b 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -68,11 +68,6 @@
#define TWL_NUM_SLAVES 4
-#define SUB_CHIP_ID0 0
-#define SUB_CHIP_ID1 1
-#define SUB_CHIP_ID2 2
-#define SUB_CHIP_ID3 3
-
/* Base Address defns for twl4030_map[] */
/* subchip/slave 0 - USB ID */
@@ -493,13 +488,20 @@ int twl_get_hfclk_rate(void)
EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
static struct device *
-add_numbered_child(unsigned chip, const char *name, int num,
+add_numbered_child(unsigned mod_no, const char *name, int num,
void *pdata, unsigned pdata_len,
bool can_wakeup, int irq0, int irq1)
{
struct platform_device *pdev;
- struct twl_client *twl = &twl_modules[chip];
- int status;
+ struct twl_client *twl;
+ int status, sid;
+
+ if (unlikely(mod_no >= twl_get_last_module())) {
+ pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
+ return ERR_PTR(-EPERM);
+ }
+ sid = twl_map[mod_no].sid;
+ twl = &twl_modules[sid];
pdev = platform_device_alloc(name, num);
if (!pdev) {
@@ -544,11 +546,11 @@ err:
return &pdev->dev;
}
-static inline struct device *add_child(unsigned chip, const char *name,
+static inline struct device *add_child(unsigned mod_no, const char *name,
void *pdata, unsigned pdata_len,
bool can_wakeup, int irq0, int irq1)
{
- return add_numbered_child(chip, name, -1, pdata, pdata_len,
+ return add_numbered_child(mod_no, name, -1, pdata, pdata_len,
can_wakeup, irq0, irq1);
}
@@ -557,7 +559,6 @@ add_regulator_linked(int num, struct regulator_init_data *pdata,
struct regulator_consumer_supply *consumers,
unsigned num_consumers, unsigned long features)
{
- unsigned sub_chip_id;
struct twl_regulator_driver_data drv_data;
/* regulator framework demands init_data ... */
@@ -584,8 +585,7 @@ add_regulator_linked(int num, struct regulator_init_data *pdata,
}
/* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
- sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
- return add_numbered_child(sub_chip_id, "twl_reg", num,
+ return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num,
pdata, sizeof(*pdata), false, 0, 0);
}
@@ -607,10 +607,9 @@ add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
unsigned long features)
{
struct device *child;
- unsigned sub_chip_id;
if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) {
- child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
+ child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio",
pdata->gpio, sizeof(*pdata->gpio),
false, irq_base + GPIO_INTR_OFFSET, 0);
if (IS_ERR(child))
@@ -618,7 +617,7 @@ add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
}
if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) {
- child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
+ child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad",
pdata->keypad, sizeof(*pdata->keypad),
true, irq_base + KEYPAD_INTR_OFFSET, 0);
if (IS_ERR(child))
@@ -627,7 +626,7 @@ add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc &&
twl_class_is_4030()) {
- child = add_child(SUB_CHIP_ID2, "twl4030_madc",
+ child = add_child(TWL4030_MODULE_MADC, "twl4030_madc",
pdata->madc, sizeof(*pdata->madc),
true, irq_base + MADC_INTR_OFFSET, 0);
if (IS_ERR(child))
@@ -642,22 +641,21 @@ add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
* Eventually, Linux might become more aware of such
* HW security concerns, and "least privilege".
*/
- sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
- child = add_child(sub_chip_id, "twl_rtc", NULL, 0,
+ child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0,
true, irq_base + RTC_INTR_OFFSET, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (IS_ENABLED(CONFIG_PWM_TWL)) {
- child = add_child(SUB_CHIP_ID1, "twl-pwm", NULL, 0,
+ child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0,
false, 0, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (IS_ENABLED(CONFIG_PWM_TWL_LED)) {
- child = add_child(SUB_CHIP_ID1, "twl-pwmled", NULL, 0,
+ child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0,
false, 0, 0);
if (IS_ERR(child))
return PTR_ERR(child);
@@ -709,7 +707,7 @@ add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
}
- child = add_child(SUB_CHIP_ID0, "twl4030_usb",
+ child = add_child(TWL_MODULE_USB, "twl4030_usb",
pdata->usb, sizeof(*pdata->usb), true,
/* irq0 = USB_PRES, irq1 = USB */
irq_base + USB_PRES_INTR_OFFSET,
@@ -758,7 +756,7 @@ add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
pdata->usb->features = features;
- child = add_child(SUB_CHIP_ID0, "twl6030_usb",
+ child = add_child(TWL_MODULE_USB, "twl6030_usb",
pdata->usb, sizeof(*pdata->usb), true,
/* irq1 = VBUS_PRES, irq0 = USB ID */
irq_base + USBOTG_INTR_OFFSET,
@@ -783,22 +781,22 @@ add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
}
if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) {
- child = add_child(SUB_CHIP_ID3, "twl4030_wdt", NULL, 0,
- false, 0, 0);
+ child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL,
+ 0, false, 0, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) {
- child = add_child(SUB_CHIP_ID3, "twl4030_pwrbutton", NULL, 0,
- true, irq_base + 8 + 0, 0);
+ child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton",
+ NULL, 0, true, irq_base + 8 + 0, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio &&
twl_class_is_4030()) {
- child = add_child(SUB_CHIP_ID1, "twl4030-audio",
+ child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio",
pdata->audio, sizeof(*pdata->audio),
false, 0, 0);
if (IS_ERR(child))
@@ -1038,7 +1036,7 @@ add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci &&
!(features & (TPS_SUBSET | TWL5031))) {
- child = add_child(SUB_CHIP_ID3, "twl4030_bci",
+ child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci",
pdata->bci, sizeof(*pdata->bci), false,
/* irq0 = CHG_PRES, irq1 = BCI */
irq_base + BCI_PRES_INTR_OFFSET,
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 04/10] mfd: twl-core: Allocate twl_modules dynamically
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
` (2 preceding siblings ...)
2012-12-31 11:09 ` [PATCH 03/10] mfd: twl-core: Use the lookup table to find the correct subchip for the modules Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 05/10] mfd: twl-core: Do not try to call legacy mfd add_children() when booted with DT Peter Ujfalusi
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
At boot time we can allocate the twl_modules array dynamically based on the
twl class we are using with devm_kzalloc() instead of the static
twl_modules[] array.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 31 +++++++++++++++++++++----------
1 file changed, 21 insertions(+), 10 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index f07317b..fbff830 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -66,8 +66,6 @@
/* Triton Core internal information (BEGIN) */
-#define TWL_NUM_SLAVES 4
-
/* Base Address defns for twl4030_map[] */
/* subchip/slave 0 - USB ID */
@@ -162,7 +160,7 @@ struct twl_client {
struct regmap *regmap;
};
-static struct twl_client twl_modules[TWL_NUM_SLAVES];
+static struct twl_client *twl_modules;
/* mapping the module id to slave id and base address */
struct twl_mapping {
@@ -284,6 +282,14 @@ static struct regmap_config twl6030_regmap_config[3] = {
/*----------------------------------------------------------------------*/
+static inline int twl_get_num_slaves(void)
+{
+ if (twl_class_is_4030())
+ return 4; /* TWL4030 class have four slave address */
+ else
+ return 3; /* TWL6030 class have three slave address */
+}
+
static inline int twl_get_last_module(void)
{
if (twl_class_is_4030())
@@ -1127,17 +1133,15 @@ static int twl_remove(struct i2c_client *client)
unsigned i, num_slaves;
int status;
- if (twl_class_is_4030()) {
+ if (twl_class_is_4030())
status = twl4030_exit_irq();
- num_slaves = TWL_NUM_SLAVES;
- } else {
+ else
status = twl6030_exit_irq();
- num_slaves = TWL_NUM_SLAVES - 1;
- }
if (status < 0)
return status;
+ num_slaves = twl_get_num_slaves();
for (i = 0; i < num_slaves; i++) {
struct twl_client *twl = &twl_modules[i];
@@ -1215,12 +1219,19 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
twl_map[TWL_MODULE_MAIN_CHARGE].base =
TWL6025_BASEADD_CHARGER;
twl_regmap_config = twl6030_regmap_config;
- num_slaves = TWL_NUM_SLAVES - 1;
} else {
twl_id = TWL4030_CLASS_ID;
twl_map = &twl4030_map[0];
twl_regmap_config = twl4030_regmap_config;
- num_slaves = TWL_NUM_SLAVES;
+ }
+
+ num_slaves = twl_get_num_slaves();
+ twl_modules = devm_kzalloc(&client->dev,
+ sizeof(struct twl_client) * num_slaves,
+ GFP_KERNEL);
+ if (!twl_modules) {
+ status = -ENOMEM;
+ goto free;
}
for (i = 0; i < num_slaves; i++) {
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 05/10] mfd: twl-core: Do not try to call legacy mfd add_children() when booted with DT
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
` (3 preceding siblings ...)
2012-12-31 11:09 ` [PATCH 04/10] mfd: twl-core: Allocate twl_modules dynamically Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 06/10] mfd: twl-core: Do not create dummy pdata " Peter Ujfalusi
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
There is really no point to retry to add children devices in case the
of_platform_populate() fails.
We do not have any information provided via pdata in this case anyways.
Depending on the boot type (legacy or DT) only execute either one.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index fbff830..86cca9e 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -1305,10 +1305,9 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
}
- status = -ENODEV;
if (node)
status = of_platform_populate(node, NULL, NULL, &client->dev);
- if (status)
+ else
status = add_children(pdata, irq_base, id->driver_data);
fail:
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 06/10] mfd: twl-core: Do not create dummy pdata when booted with DT
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
` (4 preceding siblings ...)
2012-12-31 11:09 ` [PATCH 05/10] mfd: twl-core: Do not try to call legacy mfd add_children() when booted with DT Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 07/10] mfd: twl-core: Move 'inuse' check early at probe time Peter Ujfalusi
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
When booted with DT we can manage without the dummy pdata.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 31 +++++++------------------------
1 file changed, 7 insertions(+), 24 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 86cca9e..547fed5 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -1165,6 +1165,11 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
int status;
unsigned i, num_slaves;
+ if (!node && !pdata) {
+ dev_err(&client->dev, "no platform data\n");
+ return -EINVAL;
+ }
+
pdev = platform_device_alloc(DRIVER_NAME, -1);
if (!pdev) {
dev_err(&client->dev, "can't alloc pdev\n");
@@ -1177,28 +1182,6 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
return status;
}
- if (node && !pdata) {
- /*
- * XXX: Temporary pdata until the information is correctly
- * retrieved by every TWL modules from DT.
- */
- pdata = devm_kzalloc(&client->dev,
- sizeof(struct twl4030_platform_data),
- GFP_KERNEL);
- if (!pdata) {
- status = -ENOMEM;
- goto free;
- }
- }
-
- if (!pdata) {
- dev_dbg(&client->dev, "no platform data?\n");
- status = -EINVAL;
- goto free;
- }
-
- platform_set_drvdata(pdev, pdata);
-
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
dev_dbg(&client->dev, "can't talk I2C?\n");
status = -EIO;
@@ -1264,7 +1247,7 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
inuse = true;
/* setup clock framework */
- clocks_init(&pdev->dev, pdata->clock);
+ clocks_init(&pdev->dev, pdata ? pdata->clock : NULL);
/* read TWL IDCODE Register */
if (twl_id == TWL4030_CLASS_ID) {
@@ -1273,7 +1256,7 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
}
/* load power event scripts */
- if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power)
+ if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata && pdata->power)
twl4030_power_init(pdata->power);
/* Maybe init the T2 Interrupt subsystem */
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 07/10] mfd: twl-core: Move 'inuse' check early at probe time
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
` (5 preceding siblings ...)
2012-12-31 11:09 ` [PATCH 06/10] mfd: twl-core: Do not create dummy pdata " Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 08/10] mfd: twl-core: Collect global variables behind one private structure (global) Peter Ujfalusi
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
We can fail earlier in case multiple instance of the twl-core is tried to
be loaded.
The twl-core by design only supports one instance.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 547fed5..1827088 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -1170,6 +1170,12 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
return -EINVAL;
}
+ if (inuse) {
+ dev_dbg(&client->dev, "only one instance of %s allowed\n",
+ DRIVER_NAME);
+ return -EBUSY;
+ }
+
pdev = platform_device_alloc(DRIVER_NAME, -1);
if (!pdev) {
dev_err(&client->dev, "can't alloc pdev\n");
@@ -1188,12 +1194,6 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
goto free;
}
- if (inuse) {
- dev_dbg(&client->dev, "driver is already in use\n");
- status = -EBUSY;
- goto free;
- }
-
if ((id->driver_data) & TWL6030_CLASS) {
twl_id = TWL6030_CLASS_ID;
twl_map = &twl6030_map[0];
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 08/10] mfd: twl-core: Collect global variables behind one private structure (global)
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
` (6 preceding siblings ...)
2012-12-31 11:09 ` [PATCH 07/10] mfd: twl-core: Move 'inuse' check early at probe time Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 09/10] mfd: twl-core: Remove no longer valid comment regarding to write buffer size Peter Ujfalusi
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
Gather the global variables under a single structure and allocate it with
devm_kzalloc(). It is easier to see them and if in the future we try to add
support for multiple instance of twl in the system it is going to be much
simpler.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 104 +++++++++++++++++++++++++++----------------------
1 file changed, 57 insertions(+), 47 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 1827088..e2895a4 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -141,33 +141,28 @@
/*----------------------------------------------------------------------*/
-/* is driver active, bound to a chip? */
-static bool inuse;
-
-/* TWL IDCODE Register value */
-static u32 twl_idcode;
-
-static unsigned int twl_id;
-unsigned int twl_rev(void)
-{
- return twl_id;
-}
-EXPORT_SYMBOL(twl_rev);
-
/* Structure for each TWL4030/TWL6030 Slave */
struct twl_client {
struct i2c_client *client;
struct regmap *regmap;
};
-static struct twl_client *twl_modules;
-
/* mapping the module id to slave id and base address */
struct twl_mapping {
unsigned char sid; /* Slave ID */
unsigned char base; /* base address */
};
-static struct twl_mapping *twl_map;
+
+struct twl_private {
+ bool ready; /* The core driver is ready to be used */
+ u32 twl_idcode; /* TWL IDCODE Register value */
+ unsigned int twl_id;
+
+ struct twl_mapping *twl_map;
+ struct twl_client *twl_modules;
+};
+
+static struct twl_private *twl_priv;
static struct twl_mapping twl4030_map[] = {
/*
@@ -300,6 +295,12 @@ static inline int twl_get_last_module(void)
/* Exported Functions */
+unsigned int twl_rev(void)
+{
+ return twl_priv ? twl_priv->twl_id : 0;
+}
+EXPORT_SYMBOL(twl_rev);
+
/**
* twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
* @mod_no: module number
@@ -322,16 +323,17 @@ int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
return -EPERM;
}
- if (unlikely(!inuse)) {
+ if (unlikely(!twl_priv->ready)) {
pr_err("%s: not initialized\n", DRIVER_NAME);
return -EPERM;
}
- sid = twl_map[mod_no].sid;
- twl = &twl_modules[sid];
+ sid = twl_priv->twl_map[mod_no].sid;
+ twl = &twl_priv->twl_modules[sid];
- ret = regmap_bulk_write(twl->regmap, twl_map[mod_no].base + reg,
- value, num_bytes);
+ ret = regmap_bulk_write(twl->regmap,
+ twl_priv->twl_map[mod_no].base + reg, value,
+ num_bytes);
if (ret)
pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n",
@@ -360,16 +362,17 @@ int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
return -EPERM;
}
- if (unlikely(!inuse)) {
+ if (unlikely(!twl_priv->ready)) {
pr_err("%s: not initialized\n", DRIVER_NAME);
return -EPERM;
}
- sid = twl_map[mod_no].sid;
- twl = &twl_modules[sid];
+ sid = twl_priv->twl_map[mod_no].sid;
+ twl = &twl_priv->twl_modules[sid];
- ret = regmap_bulk_read(twl->regmap, twl_map[mod_no].base + reg,
- value, num_bytes);
+ ret = regmap_bulk_read(twl->regmap,
+ twl_priv->twl_map[mod_no].base + reg, value,
+ num_bytes);
if (ret)
pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n",
@@ -425,7 +428,7 @@ static int twl_read_idcode_register(void)
goto fail;
}
- err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
+ err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode),
REG_IDCODE_7_0, 4);
if (err) {
pr_err("TWL4030: unable to read IDCODE -%d\n", err);
@@ -446,7 +449,7 @@ fail:
*/
int twl_get_type(void)
{
- return TWL_SIL_TYPE(twl_idcode);
+ return TWL_SIL_TYPE(twl_priv->twl_idcode);
}
EXPORT_SYMBOL_GPL(twl_get_type);
@@ -457,7 +460,7 @@ EXPORT_SYMBOL_GPL(twl_get_type);
*/
int twl_get_version(void)
{
- return TWL_SIL_REV(twl_idcode);
+ return TWL_SIL_REV(twl_priv->twl_idcode);
}
EXPORT_SYMBOL_GPL(twl_get_version);
@@ -506,8 +509,8 @@ add_numbered_child(unsigned mod_no, const char *name, int num,
pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
return ERR_PTR(-EPERM);
}
- sid = twl_map[mod_no].sid;
- twl = &twl_modules[sid];
+ sid = twl_priv->twl_map[mod_no].sid;
+ twl = &twl_priv->twl_modules[sid];
pdev = platform_device_alloc(name, num);
if (!pdev) {
@@ -1143,13 +1146,13 @@ static int twl_remove(struct i2c_client *client)
num_slaves = twl_get_num_slaves();
for (i = 0; i < num_slaves; i++) {
- struct twl_client *twl = &twl_modules[i];
+ struct twl_client *twl = &twl_priv->twl_modules[i];
if (twl->client && twl->client != client)
i2c_unregister_device(twl->client);
- twl_modules[i].client = NULL;
+ twl->client = NULL;
}
- inuse = false;
+ twl_priv->ready = false;
return 0;
}
@@ -1170,7 +1173,7 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
return -EINVAL;
}
- if (inuse) {
+ if (twl_priv) {
dev_dbg(&client->dev, "only one instance of %s allowed\n",
DRIVER_NAME);
return -EBUSY;
@@ -1194,31 +1197,38 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
goto free;
}
+ twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private),
+ GFP_KERNEL);
+ if (!twl_priv) {
+ status = -ENOMEM;
+ goto free;
+ }
+
if ((id->driver_data) & TWL6030_CLASS) {
- twl_id = TWL6030_CLASS_ID;
- twl_map = &twl6030_map[0];
+ twl_priv->twl_id = TWL6030_CLASS_ID;
+ twl_priv->twl_map = &twl6030_map[0];
/* The charger base address is different in twl6025 */
if ((id->driver_data) & TWL6025_SUBCLASS)
- twl_map[TWL_MODULE_MAIN_CHARGE].base =
+ twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base =
TWL6025_BASEADD_CHARGER;
twl_regmap_config = twl6030_regmap_config;
} else {
- twl_id = TWL4030_CLASS_ID;
- twl_map = &twl4030_map[0];
+ twl_priv->twl_id = TWL4030_CLASS_ID;
+ twl_priv->twl_map = &twl4030_map[0];
twl_regmap_config = twl4030_regmap_config;
}
num_slaves = twl_get_num_slaves();
- twl_modules = devm_kzalloc(&client->dev,
- sizeof(struct twl_client) * num_slaves,
- GFP_KERNEL);
- if (!twl_modules) {
+ twl_priv->twl_modules = devm_kzalloc(&client->dev,
+ sizeof(struct twl_client) * num_slaves,
+ GFP_KERNEL);
+ if (!twl_priv->twl_modules) {
status = -ENOMEM;
goto free;
}
for (i = 0; i < num_slaves; i++) {
- struct twl_client *twl = &twl_modules[i];
+ struct twl_client *twl = &twl_priv->twl_modules[i];
if (i == 0) {
twl->client = client;
@@ -1244,13 +1254,13 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
}
}
- inuse = true;
+ twl_priv->ready = true;
/* setup clock framework */
clocks_init(&pdev->dev, pdata ? pdata->clock : NULL);
/* read TWL IDCODE Register */
- if (twl_id == TWL4030_CLASS_ID) {
+ if (twl_class_is_4030()) {
status = twl_read_idcode_register();
WARN(status < 0, "Error: reading twl_idcode register value\n");
}
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 09/10] mfd: twl-core: Remove no longer valid comment regarding to write buffer size
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
` (7 preceding siblings ...)
2012-12-31 11:09 ` [PATCH 08/10] mfd: twl-core: Collect global variables behind one private structure (global) Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2012-12-31 11:09 ` [PATCH 10/10] mfd: twl-core: Move twl_i2c_read/write_u8 to header as inline function Peter Ujfalusi
2013-01-15 8:20 ` [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
With the regmap conversion there is no longeer a need to allocate bigger
buffer for writes
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 3 ---
include/linux/i2c/twl.h | 3 ---
2 files changed, 6 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index e2895a4..9661204 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -308,9 +308,6 @@ EXPORT_SYMBOL(twl_rev);
* @reg: register address (just offset will do)
* @num_bytes: number of bytes to transfer
*
- * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
- * valid data starts at Offset 1.
- *
* Returns the result of operation - 0 is success
*/
int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 72adc88..e441fd8 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -182,9 +182,6 @@ int twl_i2c_read_u8(u8 mod_no, u8 *val, u8 reg);
/*
* Read and write several 8-bit registers at once.
- *
- * IMPORTANT: For twl_i2c_write(), allocate num_bytes + 1
- * for the value, and populate your data starting at offset 1.
*/
int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 10/10] mfd: twl-core: Move twl_i2c_read/write_u8 to header as inline function
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
` (8 preceding siblings ...)
2012-12-31 11:09 ` [PATCH 09/10] mfd: twl-core: Remove no longer valid comment regarding to write buffer size Peter Ujfalusi
@ 2012-12-31 11:09 ` Peter Ujfalusi
2013-01-15 8:20 ` [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2012-12-31 11:09 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
twl_i2c_read/write_u8 become as a simple wrapper over the twl_i2c_read/write.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/mfd/twl-core.c | 28 ----------------------------
include/linux/i2c/twl.h | 17 +++++++++++------
2 files changed, 11 insertions(+), 34 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 9661204..557f9ee 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -379,34 +379,6 @@ int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
}
EXPORT_SYMBOL(twl_i2c_read);
-/**
- * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
- * @mod_no: module number
- * @value: the value to be written 8 bit
- * @reg: register address (just offset will do)
- *
- * Returns result of operation - 0 is success
- */
-int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
-{
- return twl_i2c_write(mod_no, &value, reg, 1);
-}
-EXPORT_SYMBOL(twl_i2c_write_u8);
-
-/**
- * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
- * @mod_no: module number
- * @value: the value read 8 bit
- * @reg: register address (just offset will do)
- *
- * Returns result of operation - 0 is success
- */
-int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
-{
- return twl_i2c_read(mod_no, value, reg, 1);
-}
-EXPORT_SYMBOL(twl_i2c_read_u8);
-
/*----------------------------------------------------------------------*/
/**
diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index e441fd8..488debb 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -175,17 +175,22 @@ TWL_CLASS_IS(4030, TWL4030_CLASS_ID)
TWL_CLASS_IS(6030, TWL6030_CLASS_ID)
/*
- * Read and write single 8-bit registers
- */
-int twl_i2c_write_u8(u8 mod_no, u8 val, u8 reg);
-int twl_i2c_read_u8(u8 mod_no, u8 *val, u8 reg);
-
-/*
* Read and write several 8-bit registers at once.
*/
int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
+/*
+ * Read and write single 8-bit registers
+ */
+static inline int twl_i2c_write_u8(u8 mod_no, u8 val, u8 reg) {
+ return twl_i2c_write(mod_no, &val, reg, 1);
+}
+
+static inline int twl_i2c_read_u8(u8 mod_no, u8 *val, u8 reg) {
+ return twl_i2c_read(mod_no, val, reg, 1);
+}
+
int twl_get_type(void);
int twl_get_version(void);
int twl_get_hfclk_rate(void);
--
1.8.0.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* Re: [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9
2012-12-31 11:09 [PATCH 00/10] MFD: twl-core: Cleanup part 2 for 3.9 Peter Ujfalusi
` (9 preceding siblings ...)
2012-12-31 11:09 ` [PATCH 10/10] mfd: twl-core: Move twl_i2c_read/write_u8 to header as inline function Peter Ujfalusi
@ 2013-01-15 8:20 ` Peter Ujfalusi
10 siblings, 0 replies; 12+ messages in thread
From: Peter Ujfalusi @ 2013-01-15 8:20 UTC (permalink / raw)
To: Samuel Ortiz; +Cc: linux-kernel, linux-omap, Tero Kristo
Hi Samuel,
On 12/31/2012 12:09 PM, Peter Ujfalusi wrote:
> Hello,
>
> Second part of the cleanup of twl-core which aims to make the code a bit more
> readable.
> It has been tested on: OMAP4 PandaBoard, OMAP4 Blaze, OMAP3 BeagleBoard, OMAP3
> Zoom2.
I will resend the series since I need to add two more patches to avoid build
breakage in zoom2.
>
> Regards,
> Peter
> ---
> Peter Ujfalusi (10):
> mfd: twl-core: Clean up module id lookup and definitions
> mfd: twl-core: No need to check for invalid subchip ID
> mfd: twl-core: Use the lookup table to find the correct subchip for
> the modules
> mfd: twl-core: Allocate twl_modules dynamically
> mfd: twl-core: Do not try to call legacy mfd add_children() when
> booted with DT
> mfd: twl-core: Do not create dummy pdata when booted with DT
> mfd: twl-core: Move 'inuse' check early at probe time
> mfd: twl-core: Collect global variables behind one private structure
> (global)
> mfd: twl-core: Remove no longer valid comment regarding to write
> buffer size
> mfd: twl-core: Move twl_i2c_read/write_u8 to header as inline function
> drivers/mfd/twl-core.c | 362 +++++++++++++++++++++---------------------------
> include/linux/i2c/twl.h | 84 +++++------
> 2 files changed, 205 insertions(+), 241 deletions(-)
>
--
Péter
^ permalink raw reply [flat|nested] 12+ messages in thread