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[5/8] pinctrl: COH901XXX: driver to request its pins

Message ID 1321904915-32410-1-git-send-email-linus.walleij@stericsson.com
State Accepted, archived
Headers show

Commit Message

Linus Walleij Nov. 21, 2011, 7:48 p.m. UTC 
From: Linus Walleij <linus.walleij@linaro.org>

This makes the COH 901XXX driver request muxing of its GPIO pins
from the pinmux-u300 driver using the standard API calls.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/pinctrl/Kconfig             |    2 +-
 drivers/pinctrl/pinctrl-coh901xxx.c |   21 +++++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 0efe702..74576bb 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -35,7 +35,7 @@  config PINMUX_U300
 
 config PINCTRL_COH901XXX
 	bool "ST-Ericsson U300 COH 901 335/571 GPIO"
-	depends on GPIOLIB && ARCH_U300
+	depends on GPIOLIB && ARCH_U300 && PINMUX_U300
 	help
 	  Say yes here to support GPIO interface on ST-Ericsson U300.
 	  The names of the two IP block variants supported are
diff --git a/drivers/pinctrl/pinctrl-coh901xxx.c b/drivers/pinctrl/pinctrl-coh901xxx.c
index 4035778..69fb707 100644
--- a/drivers/pinctrl/pinctrl-coh901xxx.c
+++ b/drivers/pinctrl/pinctrl-coh901xxx.c
@@ -22,6 +22,7 @@ 
 #include <linux/gpio.h>
 #include <linux/list.h>
 #include <linux/slab.h>
+#include <linux/pinctrl/pinmux.h>
 #include <mach/gpio-u300.h>
 
 /*
@@ -351,6 +352,24 @@  static inline struct u300_gpio *to_u300_gpio(struct gpio_chip *chip)
 	return container_of(chip, struct u300_gpio, chip);
 }
 
+static int u300_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+	/*
+	 * Map back to global GPIO space and request muxing, the direction
+	 * parameter does not matter for this controller.
+	 */
+	int gpio = chip->base + offset;
+
+	return pinmux_request_gpio(gpio);
+}
+
+static void u300_gpio_free(struct gpio_chip *chip, unsigned offset)
+{
+	int gpio = chip->base + offset;
+
+	pinmux_free_gpio(gpio);
+}
+
 static int u300_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
 	struct u300_gpio *gpio = to_u300_gpio(chip);
@@ -483,6 +502,8 @@  static int u300_gpio_config(struct gpio_chip *chip, unsigned offset,
 static struct gpio_chip u300_gpio_chip = {
 	.label			= "u300-gpio-chip",
 	.owner			= THIS_MODULE,
+	.request		= u300_gpio_request,
+	.free			= u300_gpio_free,
 	.get			= u300_gpio_get,
 	.set			= u300_gpio_set,
 	.direction_input	= u300_gpio_direction_input,