ARM: pxa: Add gpio descriptor lookup tables for MMC CD/WP

This adds GPIO descriptor look-up tables for a whole bunch
of PXA boards with MMC card detect (CD) and write protect (WP)
GPIO lines, so we can move away from the hard-coded GPIO
numberspace.

In some cases the platforms were compulsively including the
<linux/gpio.h> header even if they weren't actually using
it, and in these cases I simply replaced that inclusion with
the more appropriate <linux/gpio/machine.h> which is what
board files should be including most of the time.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

arch/arm/mach-pxa/mioa701.c

@@ -31,6 +31,7 @@
 #include <linux/rtc.h>
 #include <linux/leds.h>
 #include <linux/gpio.h>
+#include <linux/gpio/machine.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/pda_power.h>
@@ -402,6 +403,19 @@ static struct pxamci_platform_data mioa701_mci_info = {
 	.gpio_power		= GPIO91_SDIO_EN,
 };
 
+static struct gpiod_lookup_table mioa701_mci_gpio_table = {
+	.dev_id = "pxa2xx-mci.0",
+	.table = {
+		/* Card detect on GPIO 15 */
+		GPIO_LOOKUP("gpio-pxa", GPIO15_SDIO_INSERT,
+			    "cd", GPIO_ACTIVE_LOW),
+		/* Write protect on GPIO 78 */
+		GPIO_LOOKUP("gpio-pxa", GPIO78_SDIO_RO,
+			    "wp", GPIO_ACTIVE_LOW),
+		{ },
+	},
+};
+
 /* FlashRAM */
 static struct resource docg3_resource = {
 	.start = PXA_CS0_PHYS,
@@ -743,6 +757,7 @@ static void __init mioa701_machine_init(void)
 		pr_err("MioA701: Failed to request GPIOs: %d", rc);
 	bootstrap_init();
 	pxa_set_fb_info(NULL, &mioa701_pxafb_info);
+	gpiod_add_lookup_table(&mioa701_mci_gpio_table);
 	pxa_set_mci_info(&mioa701_mci_info);
 	pxa_set_keypad_info(&mioa701_keypad_info);
 	pxa_set_udc_info(&mioa701_udc_info);