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>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c
index c5c0ab8ac9f9..502c19791523 100644
--- a/arch/arm/mach-pxa/cm-x300.c
+++ b/arch/arm/mach-pxa/cm-x300.c
@@ -464,6 +464,17 @@ static struct pxamci_platform_data cm_x300_mci_platform_data = {
 	.gpio_power		= -1,
 };
 
+static struct gpiod_lookup_table cm_x300_mci_gpio_table = {
+	.dev_id = "pxa2xx-mci.0",
+	.table = {
+		/* Card detect on GPIO 82 */
+		GPIO_LOOKUP("gpio-pxa", GPIO82_MMC_IRQ, "cd", GPIO_ACTIVE_LOW),
+		/* Write protect on GPIO 85 */
+		GPIO_LOOKUP("gpio-pxa", GPIO85_MMC_WP, "wp", GPIO_ACTIVE_LOW),
+		{ },
+	},
+};
+
 /* The second MMC slot of CM-X300 is hardwired to Libertas card and has
    no detection/ro pins */
 static int cm_x300_mci2_init(struct device *dev,
@@ -489,6 +500,7 @@ static struct pxamci_platform_data cm_x300_mci2_platform_data = {
 
 static void __init cm_x300_init_mmc(void)
 {
+	gpiod_add_lookup_table(&cm_x300_mci_gpio_table);
 	pxa_set_mci_info(&cm_x300_mci_platform_data);
 	pxa3xx_set_mci2_info(&cm_x300_mci2_platform_data);
 }