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authorShobhit Kumar <shobhit.kumar@intel.com>2015-06-26 09:02:05 (GMT)
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-07-21 07:22:02 (GMT)
commit61dd2ca2d44e493b050adbbb75bc50db11c367dd (patch)
tree600774a47c0251bfc5b42a495e228e93948728eb /drivers/mfd
parentbe9015abb8296d8dc72cef4da75fa30e88ab7c81 (diff)
downloadlinux-61dd2ca2d44e493b050adbbb75bc50db11c367dd.tar.xz
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>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/intel_soc_pmic_core.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c
index 7b50b6b..f3d918e 100644
--- a/drivers/mfd/intel_soc_pmic_core.c
+++ b/drivers/mfd/intel_soc_pmic_core.c
@@ -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;