From 32d1544880aa87aebe4d20babb48615c65874b02 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Sun, 2 Dec 2018 09:43:22 +0100
Subject: 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/zylonite.c | 48 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 2 deletions(-)

(limited to 'arch/arm/mach-pxa/zylonite.c')

diff --git a/arch/arm/mach-pxa/zylonite.c b/arch/arm/mach-pxa/zylonite.c
index 52e70a5c1281..70cbfe1da32a 100644
--- a/arch/arm/mach-pxa/zylonite.c
+++ b/arch/arm/mach-pxa/zylonite.c
@@ -19,7 +19,7 @@
 #include <linux/leds.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
 #include <linux/pwm.h>
 #include <linux/pwm_backlight.h>
 #include <linux/smc91x.h>
@@ -232,6 +232,24 @@ static struct pxamci_platform_data zylonite_mci_platform_data = {
 	.gpio_power	= -1,
 };
 
+#define PCA9539A_MCI_CD 0
+#define PCA9539A_MCI1_CD 1
+#define PCA9539A_MCI_WP 2
+#define PCA9539A_MCI1_WP 3
+#define PCA9539A_MCI3_CD 30
+#define PCA9539A_MCI3_WP 31
+
+static struct gpiod_lookup_table zylonite_mci_gpio_table = {
+	.dev_id = "pxa2xx-mci.0",
+	.table = {
+		GPIO_LOOKUP("i2c-pca9539-a", PCA9539A_MCI_CD,
+			    "cd", GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP("i2c-pca9539-a", PCA9539A_MCI_WP,
+			    "wp", GPIO_ACTIVE_LOW),
+		{ },
+	},
+};
+
 static struct pxamci_platform_data zylonite_mci2_platform_data = {
 	.detect_delay_ms= 200,
 	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
@@ -240,6 +258,17 @@ static struct pxamci_platform_data zylonite_mci2_platform_data = {
 	.gpio_power	= -1,
 };
 
+static struct gpiod_lookup_table zylonite_mci2_gpio_table = {
+	.dev_id = "pxa2xx-mci.1",
+	.table = {
+		GPIO_LOOKUP("i2c-pca9539-a", PCA9539A_MCI1_CD,
+			    "cd", GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP("i2c-pca9539-a", PCA9539A_MCI1_WP,
+			    "wp", GPIO_ACTIVE_LOW),
+		{ },
+	},
+};
+
 static struct pxamci_platform_data zylonite_mci3_platform_data = {
 	.detect_delay_ms= 200,
 	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
@@ -248,12 +277,27 @@ static struct pxamci_platform_data zylonite_mci3_platform_data = {
 	.gpio_power	= -1,
 };
 
+static struct gpiod_lookup_table zylonite_mci3_gpio_table = {
+	.dev_id = "pxa2xx-mci.2",
+	.table = {
+		GPIO_LOOKUP("i2c-pca9539-a", PCA9539A_MCI3_CD,
+			    "cd", GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP("i2c-pca9539-a", PCA9539A_MCI3_WP,
+			    "wp", GPIO_ACTIVE_LOW),
+		{ },
+	},
+};
+
 static void __init zylonite_init_mmc(void)
 {
+	gpiod_add_lookup_table(&zylonite_mci_gpio_table);
 	pxa_set_mci_info(&zylonite_mci_platform_data);
+	gpiod_add_lookup_table(&zylonite_mci2_gpio_table);
 	pxa3xx_set_mci2_info(&zylonite_mci2_platform_data);
-	if (cpu_is_pxa310())
+	if (cpu_is_pxa310()) {
+		gpiod_add_lookup_table(&zylonite_mci3_gpio_table);
 		pxa3xx_set_mci3_info(&zylonite_mci3_platform_data);
+	}
 }
 #else
 static inline void zylonite_init_mmc(void) {}
-- 
cgit