[Intel-gfx] [PATCH 1/2] gpio/crystalcove: Export Panel and backlight en/disable signals as GPIO

[Shobhit Kumar]

Export Panel BACKLIGHT_EN(offset 0x51) and PANEL_EN(offset 0x52) as two
additional GPIOs. Needed by display driver to enable the DSI panel on
BYT platform where the Panel EN/Disable and Backlight control are
routed thorugh CRC PMIC

Cc: Linus Walleij <linus.walleij at linaro.org>
Cc: Alexandre Courbot <gnurou at gmail.com>
Cc: Thierry Reding <thierry.reding at gmail.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar at intel.com>
---
 drivers/gpio/gpio-crystalcove.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-crystalcove.c b/drivers/gpio/gpio-crystalcove.c
index 3d9e08f..9e94dc64 100644
--- a/drivers/gpio/gpio-crystalcove.c
+++ b/drivers/gpio/gpio-crystalcove.c
@@ -24,7 +24,7 @@
 #include <linux/mfd/intel_soc_pmic.h>
 
 #define CRYSTALCOVE_GPIO_NUM	16
-#define CRYSTALCOVE_VGPIO_NUM	94
+#define CRYSTALCOVE_VGPIO_NUM	96
 
 #define UPDATE_IRQ_TYPE		BIT(0)
 #define UPDATE_IRQ_MASK		BIT(1)
@@ -39,6 +39,7 @@
 #define GPIO0P0CTLI		0x33
 #define GPIO1P0CTLO		0x3b
 #define GPIO1P0CTLI		0x43
+#define GPIOPANELCTL		0x51
 
 #define CTLI_INTCNT_DIS		(0)
 #define CTLI_INTCNT_NE		(1 << 1)
@@ -93,6 +94,11 @@ static inline int to_reg(int gpio, enum ctrl_register reg_type)
 {
 	int reg;
 
+	if (gpio >= 94) {
+		reg = GPIOPANELCTL + gpio - 94;
+		return reg;
+	}
+
 	if (reg_type == CTRL_IN) {
 		if (gpio < 8)
 			reg = GPIO0P0CTLI;
-- 
1.9.1