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Commit 61dd2ca2 authored by Shobhit Kumar's avatar Shobhit Kumar Committed by Daniel Vetter
Browse files

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: default avatarLee Jones <lee.jones@linaro.org>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Tested-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarShobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent be9015ab

drivers/mfd/intel_soc_pmic_core.c

+17 −0
Original line number Diff line number Diff line
@@ -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;