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mfd: intel_soc_pmic_core: ADD PWM lookup table for CRC PMIC based PWM 

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)

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>
Acked-by: Lee Jones <lee.jones@linaro.org>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Shobhit Kumar 2015-06-26 14:32:07 +05:30 committed by Daniel Vetter
parent 3d5e10ec50
commit a3aa9a93df
1 changed files with 12 additions and 0 deletions
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12
drivers/mfd/intel_soc_pmic_core.c
View File

@ -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;