[PATCH 3/8] mfd: intel_soc_pmic_core: Add lookup table for Panel Control as GPIO signal

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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

v2: Make the lookup table static (Thierry)
    Remove the lookup table during driver remove (Thierry)

v3: Correct the subject line (Lee jones)

CC: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Alexandre Courbot <gnurou@xxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Acked-by: Lee Jones <lee.jones@xxxxxxxxxx>
Signed-off-by: Shobhit Kumar <shobhit.kumar@xxxxxxxxx>
---
 drivers/mfd/intel_soc_pmic_core.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

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;
-- 
2.1.0

--
To unsubscribe from this list: send the line "unsubscribe linux-gpio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux SPI]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux