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mfd: intel_soc_pmic_core: Add lookup table for Panel Control as GPIO signal 

On some Intel SoC platforms, the panel enable/disable signals are
controlled by CRC PMIC. Add those control as a new GPIO in a lookup
table for gpio-crystalcove chip during CRC driver load

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>
Acked-by: Linus Walleij <linus.walleij@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 14:32:05 +05:30 committed by Daniel Vetter
parent be9015abb8
commit 61dd2ca2d4
1 changed files with 17 additions and 0 deletions
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17
drivers/mfd/intel_soc_pmic_core.c
View File

@ -24,8 +24,19 @@
#include <linux/acpi.h>
#include <linux/regmap.h>
#include <linux/mfd/intel_soc_pmic.h>
#include <linux/gpio/machine.h>
#include "intel_soc_pmic_core.h"
/* Lookup table for the Panel Enable/Disable line as GPIO signals */
static struct gpiod_lookup_table panel_gpio_table = {
/* Intel GFX is consumer */
.dev_id = "0000:00:02.0",
.table = {
/* Panel EN/DISABLE */
GPIO_LOOKUP("gpio_crystalcove", 94, "panel", GPIO_ACTIVE_HIGH),
},
};
static int intel_soc_pmic_find_gpio_irq(struct device *dev)
{
struct gpio_desc *desc;
@ -85,6 +96,9 @@ static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
if (ret)
dev_warn(dev, "Can't enable IRQ as wake source: %d\n", ret);
/* Add lookup table binding for Panel Control to the GPIO Chip */
gpiod_add_lookup_table(&panel_gpio_table);
ret = mfd_add_devices(dev, -1, config->cell_dev,
config->n_cell_devs, NULL, 0,
regmap_irq_get_domain(pmic->irq_chip_data));
@ -104,6 +118,9 @@ static int intel_soc_pmic_i2c_remove(struct i2c_client *i2c)
regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
/* Remove lookup table for Panel Control from the GPIO Chip */
gpiod_remove_lookup_table(&panel_gpio_table);
mfd_remove_devices(&i2c->dev);
return 0;