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gpio: tegra: Hide tegra_gpio_enable/disable()

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Recent pinctrl discussions concluded that gpiolib APIs should in fact do
whatever is required to mux a GPIO onto pins, by calling pinctrl APIs if
required. This change implements this for the Tegra GPIO driver, and removes
calls to the Tegra-specific APIs from drivers and board files.

Cc: Chris Ball <cjb@laptop.org>
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Chris Ball <cjb@laptop.org> # for sdhci-tegra.c
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Stephen Warren
2012-02-18 01:04:55 -07:00
parent c61b3da0ac
commit 3e215d0a19
12 changed files with 28 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
drivers/gpio/gpio-tegra.c
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@@ -26,10 +26,10 @@
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/irqdomain.h>
#include <linux/pinctrl/consumer.h>
#include <asm/mach/irq.h>
#include <mach/gpio-tegra.h>
#include <mach/iomap.h>
#include <mach/suspend.h>
@@ -108,18 +108,29 @@ static void tegra_gpio_mask_write(u32 reg, int gpio, int value)
tegra_gpio_writel(val, reg);
}
void tegra_gpio_enable(int gpio)
static void tegra_gpio_enable(int gpio)
{
tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 1);
}
EXPORT_SYMBOL_GPL(tegra_gpio_enable);
void tegra_gpio_disable(int gpio)
static void tegra_gpio_disable(int gpio)
{
tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 0);
}
EXPORT_SYMBOL_GPL(tegra_gpio_disable);
int tegra_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(offset);
}
void tegra_gpio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(offset);
tegra_gpio_disable(offset);
}
static void tegra_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
tegra_gpio_mask_write(GPIO_MSK_OUT(offset), offset, value);
@@ -133,6 +144,7 @@ static int tegra_gpio_get(struct gpio_chip *chip, unsigned offset)
static int tegra_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 0);
tegra_gpio_enable(offset);
return 0;
}
@@ -141,6 +153,7 @@ static int tegra_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
{
tegra_gpio_set(chip, offset, value);
tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 1);
tegra_gpio_enable(offset);
return 0;
}
@@ -151,13 +164,14 @@ static int tegra_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
static struct gpio_chip tegra_gpio_chip = {
.label = "tegra-gpio",
.request = tegra_gpio_request,
.free = tegra_gpio_free,
.direction_input = tegra_gpio_direction_input,
.get = tegra_gpio_get,
.direction_output = tegra_gpio_direction_output,
.set = tegra_gpio_set,
.to_irq = tegra_gpio_to_irq,
.base = 0,
.ngpio = TEGRA_NR_GPIOS,
};
static void tegra_gpio_irq_ack(struct irq_data *d)
@@ -493,20 +507,6 @@ static int __init tegra_gpio_init(void)
}
postcore_initcall(tegra_gpio_init);
void tegra_gpio_config(struct tegra_gpio_table *table, int num)
{
int i;
for (i = 0; i < num; i++) {
int gpio = table[i].gpio;
if (table[i].enable)
tegra_gpio_enable(gpio);
else
tegra_gpio_disable(gpio);
}
}
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>