[5/8] drivers/mfd: ADD PWM lookup table for CRC PMIC based PWM
diff mbox

Message ID 1430316005-16480-6-git-send-email-shobhit.kumar@intel.com
State New
Headers show

Commit Message

Shobhit Kumar April 29, 2015, 2 p.m. UTC
On some BYT PLatform the PWM is controlled using CRC PMIC. Add a lookup
entry for the same to be used by the consumer (Intel GFX)

v2: Remove the lookup table on driver unload (Thierry)

CC: Samuel Ortiz <sameo@linux.intel.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
---
 drivers/mfd/intel_soc_pmic_core.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

Comments

Lee Jones April 29, 2015, 2:24 p.m. UTC | #1
On Wed, 29 Apr 2015, Shobhit Kumar wrote:

> On some BYT PLatform the PWM is controlled using CRC PMIC. Add a lookup
> entry for the same to be used by the consumer (Intel GFX)
> 
> v2: Remove the lookup table on driver unload (Thierry)
> 
> CC: Samuel Ortiz <sameo@linux.intel.com>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Cc: Alexandre Courbot <gnurou@gmail.com>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
> ---
>  drivers/mfd/intel_soc_pmic_core.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)

How do you expect this set to be managed?

Acked-by: Lee Jones <lee.jones@linaro.org>

> diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c
> index f3d918e..a00ddd9 100644
> --- a/drivers/mfd/intel_soc_pmic_core.c
> +++ b/drivers/mfd/intel_soc_pmic_core.c
> @@ -25,6 +25,7 @@
>  #include <linux/regmap.h>
>  #include <linux/mfd/intel_soc_pmic.h>
>  #include <linux/gpio/machine.h>
> +#include <linux/pwm.h>
>  #include "intel_soc_pmic_core.h"
>  
>  /* Lookup table for the Panel Enable/Disable line as GPIO signals */
> @@ -37,6 +38,11 @@ static struct gpiod_lookup_table panel_gpio_table = {
>  	},
>  };
>  
> +/* PWM consumed by the Intel GFX */
> +static struct pwm_lookup crc_pwm_lookup[] = {
> +	PWM_LOOKUP("crystal_cove_pwm", 0, "0000:00:02.0", "pwm_backlight", 0, PWM_POLARITY_NORMAL),
> +};
> +
>  static int intel_soc_pmic_find_gpio_irq(struct device *dev)
>  {
>  	struct gpio_desc *desc;
> @@ -99,6 +105,9 @@ static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
>  	/* Add lookup table binding for Panel Control to the GPIO Chip */
>  	gpiod_add_lookup_table(&panel_gpio_table);
>  
> +	/* Add lookup table for crc-pwm */
> +	pwm_add_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
> +
>  	ret = mfd_add_devices(dev, -1, config->cell_dev,
>  			      config->n_cell_devs, NULL, 0,
>  			      regmap_irq_get_domain(pmic->irq_chip_data));
> @@ -121,6 +130,9 @@ static int intel_soc_pmic_i2c_remove(struct i2c_client *i2c)
>  	/* Remove lookup table for Panel Control from the GPIO Chip */
>  	gpiod_remove_lookup_table(&panel_gpio_table);
>  
> +	/* remove crc-pwm lookup table */
> +	pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
> +
>  	mfd_remove_devices(&i2c->dev);
>  
>  	return 0;
Shobhit Kumar May 5, 2015, 9:48 a.m. UTC | #2
On 04/29/2015 07:54 PM, Lee Jones wrote:
> On Wed, 29 Apr 2015, Shobhit Kumar wrote:
> 
>> On some BYT PLatform the PWM is controlled using CRC PMIC. Add a lookup
>> entry for the same to be used by the consumer (Intel GFX)
>>
>> v2: Remove the lookup table on driver unload (Thierry)
>>
>> CC: Samuel Ortiz <sameo@linux.intel.com>
>> Cc: Linus Walleij <linus.walleij@linaro.org>
>> Cc: Alexandre Courbot <gnurou@gmail.com>
>> Cc: Thierry Reding <thierry.reding@gmail.com>
>> Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
>> ---
>>  drivers/mfd/intel_soc_pmic_core.c | 12 ++++++++++++
>>  1 file changed, 12 insertions(+)
> 
> How do you expect this set to be managed?

There are some dependencies on the look up table remove functionality in
earlier patches, so I think 3/8 can go in only after 1/8. Similarly 5/8
can go only after 2/8. Rest all can be independent.	

Regards
Shobhit

> 
> Acked-by: Lee Jones <lee.jones@linaro.org>
> 
>> diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c
>> index f3d918e..a00ddd9 100644
>> --- a/drivers/mfd/intel_soc_pmic_core.c
>> +++ b/drivers/mfd/intel_soc_pmic_core.c
>> @@ -25,6 +25,7 @@
>>  #include <linux/regmap.h>
>>  #include <linux/mfd/intel_soc_pmic.h>
>>  #include <linux/gpio/machine.h>
>> +#include <linux/pwm.h>
>>  #include "intel_soc_pmic_core.h"
>>  
>>  /* Lookup table for the Panel Enable/Disable line as GPIO signals */
>> @@ -37,6 +38,11 @@ static struct gpiod_lookup_table panel_gpio_table = {
>>  	},
>>  };
>>  
>> +/* PWM consumed by the Intel GFX */
>> +static struct pwm_lookup crc_pwm_lookup[] = {
>> +	PWM_LOOKUP("crystal_cove_pwm", 0, "0000:00:02.0", "pwm_backlight", 0, PWM_POLARITY_NORMAL),
>> +};
>> +
>>  static int intel_soc_pmic_find_gpio_irq(struct device *dev)
>>  {
>>  	struct gpio_desc *desc;
>> @@ -99,6 +105,9 @@ static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
>>  	/* Add lookup table binding for Panel Control to the GPIO Chip */
>>  	gpiod_add_lookup_table(&panel_gpio_table);
>>  
>> +	/* Add lookup table for crc-pwm */
>> +	pwm_add_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
>> +
>>  	ret = mfd_add_devices(dev, -1, config->cell_dev,
>>  			      config->n_cell_devs, NULL, 0,
>>  			      regmap_irq_get_domain(pmic->irq_chip_data));
>> @@ -121,6 +130,9 @@ static int intel_soc_pmic_i2c_remove(struct i2c_client *i2c)
>>  	/* Remove lookup table for Panel Control from the GPIO Chip */
>>  	gpiod_remove_lookup_table(&panel_gpio_table);
>>  
>> +	/* remove crc-pwm lookup table */
>> +	pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
>> +
>>  	mfd_remove_devices(&i2c->dev);
>>  
>>  	return 0;
> 
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Lee Jones May 5, 2015, 10:42 a.m. UTC | #3
On Tue, 05 May 2015, Shobhit Kumar wrote:

> On 04/29/2015 07:54 PM, Lee Jones wrote:
> > On Wed, 29 Apr 2015, Shobhit Kumar wrote:
> > 
> >> On some BYT PLatform the PWM is controlled using CRC PMIC. Add a lookup
> >> entry for the same to be used by the consumer (Intel GFX)
> >>
> >> v2: Remove the lookup table on driver unload (Thierry)
> >>
> >> CC: Samuel Ortiz <sameo@linux.intel.com>
> >> Cc: Linus Walleij <linus.walleij@linaro.org>
> >> Cc: Alexandre Courbot <gnurou@gmail.com>
> >> Cc: Thierry Reding <thierry.reding@gmail.com>
> >> Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
> >> ---
> >>  drivers/mfd/intel_soc_pmic_core.c | 12 ++++++++++++
> >>  1 file changed, 12 insertions(+)
> > 
> > How do you expect this set to be managed?
> 
> There are some dependencies on the look up table remove functionality in
> earlier patches, so I think 3/8 can go in only after 1/8. Similarly 5/8
> can go only after 2/8. Rest all can be independent.	

Taking patches 'in order' is tough to coordinate and takes a very long
time.  The best thing to do is have all of the patches taken in via a
single tree at the same time.

> > Acked-by: Lee Jones <lee.jones@linaro.org>
> > 
> >> diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c
> >> index f3d918e..a00ddd9 100644
> >> --- a/drivers/mfd/intel_soc_pmic_core.c
> >> +++ b/drivers/mfd/intel_soc_pmic_core.c
> >> @@ -25,6 +25,7 @@
> >>  #include <linux/regmap.h>
> >>  #include <linux/mfd/intel_soc_pmic.h>
> >>  #include <linux/gpio/machine.h>
> >> +#include <linux/pwm.h>
> >>  #include "intel_soc_pmic_core.h"
> >>  
> >>  /* Lookup table for the Panel Enable/Disable line as GPIO signals */
> >> @@ -37,6 +38,11 @@ static struct gpiod_lookup_table panel_gpio_table = {
> >>  	},
> >>  };
> >>  
> >> +/* PWM consumed by the Intel GFX */
> >> +static struct pwm_lookup crc_pwm_lookup[] = {
> >> +	PWM_LOOKUP("crystal_cove_pwm", 0, "0000:00:02.0", "pwm_backlight", 0, PWM_POLARITY_NORMAL),
> >> +};
> >> +
> >>  static int intel_soc_pmic_find_gpio_irq(struct device *dev)
> >>  {
> >>  	struct gpio_desc *desc;
> >> @@ -99,6 +105,9 @@ static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
> >>  	/* Add lookup table binding for Panel Control to the GPIO Chip */
> >>  	gpiod_add_lookup_table(&panel_gpio_table);
> >>  
> >> +	/* Add lookup table for crc-pwm */
> >> +	pwm_add_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
> >> +
> >>  	ret = mfd_add_devices(dev, -1, config->cell_dev,
> >>  			      config->n_cell_devs, NULL, 0,
> >>  			      regmap_irq_get_domain(pmic->irq_chip_data));
> >> @@ -121,6 +130,9 @@ static int intel_soc_pmic_i2c_remove(struct i2c_client *i2c)
> >>  	/* Remove lookup table for Panel Control from the GPIO Chip */
> >>  	gpiod_remove_lookup_table(&panel_gpio_table);
> >>  
> >> +	/* remove crc-pwm lookup table */
> >> +	pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
> >> +
> >>  	mfd_remove_devices(&i2c->dev);
> >>  
> >>  	return 0;
> >

Patch
diff mbox

diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c
index f3d918e..a00ddd9 100644
--- a/drivers/mfd/intel_soc_pmic_core.c
+++ b/drivers/mfd/intel_soc_pmic_core.c
@@ -25,6 +25,7 @@ 
 #include <linux/regmap.h>
 #include <linux/mfd/intel_soc_pmic.h>
 #include <linux/gpio/machine.h>
+#include <linux/pwm.h>
 #include "intel_soc_pmic_core.h"
 
 /* Lookup table for the Panel Enable/Disable line as GPIO signals */
@@ -37,6 +38,11 @@  static struct gpiod_lookup_table panel_gpio_table = {
 	},
 };
 
+/* PWM consumed by the Intel GFX */
+static struct pwm_lookup crc_pwm_lookup[] = {
+	PWM_LOOKUP("crystal_cove_pwm", 0, "0000:00:02.0", "pwm_backlight", 0, PWM_POLARITY_NORMAL),
+};
+
 static int intel_soc_pmic_find_gpio_irq(struct device *dev)
 {
 	struct gpio_desc *desc;
@@ -99,6 +105,9 @@  static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
 	/* Add lookup table binding for Panel Control to the GPIO Chip */
 	gpiod_add_lookup_table(&panel_gpio_table);
 
+	/* Add lookup table for crc-pwm */
+	pwm_add_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
+
 	ret = mfd_add_devices(dev, -1, config->cell_dev,
 			      config->n_cell_devs, NULL, 0,
 			      regmap_irq_get_domain(pmic->irq_chip_data));
@@ -121,6 +130,9 @@  static int intel_soc_pmic_i2c_remove(struct i2c_client *i2c)
 	/* Remove lookup table for Panel Control from the GPIO Chip */
 	gpiod_remove_lookup_table(&panel_gpio_table);
 
+	/* remove crc-pwm lookup table */
+	pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
+
 	mfd_remove_devices(&i2c->dev);
 
 	return 0;