gpio/crystalcove: Add additional GPIO for Panel control

Shobhit Kumar · linusw · commit e189ca56d91b · 2015-03-26T09:09:17.000+01:00
Export PANEL_EN/DISABLE (offset 0x52) as additional GPIO. Needed
by display driver to enable the DSI panel on BYT platform where
the Panel EN/Disable control is routed thorugh CRC PMIC

CC: Samuel Ortiz &lt;sameo@linux.intel.com&gt;
Cc: Linus Walleij &lt;linus.walleij@linaro.org&gt;
Cc: Alexandre Courbot &lt;gnurou@gmail.com&gt;
Cc: Thierry Reding &lt;thierry.reding@gmail.com&gt;
Acked-by: Daniel Vetter &lt;daniel@ffwll.ch&gt;
Signed-off-by: Shobhit Kumar &lt;shobhit.kumar@intel.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
diff --git 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	95
 
 #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		0x52
 
 #define CTLI_INTCNT_DIS		(0)
 #define CTLI_INTCNT_NE		(1 << 1)
@@ -93,6 +94,10 @@ static inline int to_reg(int gpio, enum ctrl_register reg_type)
 {
 	int reg;
 
+	if (gpio == 94) {
+		return GPIOPANELCTL;
+	}
+
 	if (reg_type == CTRL_IN) {
 		if (gpio < 8)
 			reg = GPIO0P0CTLI;
