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SubjectRe: [PATCH 09/10] input: serio: ams-delta: Toggle keyboard power over GPIO
On Sun, Dec 11, 2011 at 09:12:07PM +0100, Janusz Krzysztofik wrote:
> Don't use Amstrad Delta custom I/O functions once GPIO interface is
> available for the underlying hardware.
>
> Depends on patch 8/10 "omapfb: lcd_ams_delta: Drive control lines over
> GPIO".
>
> Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>

Acked-by: Dmitry Torokhov <dtor@mail.ru>

> ---
> arch/arm/mach-omap1/board-ams-delta.c | 5 --
> arch/arm/plat-omap/include/plat/board-ams-delta.h | 2 -
> drivers/input/serio/ams_delta_serio.c | 45 +++++++++++---------
> 3 files changed, 25 insertions(+), 27 deletions(-)
>
> diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c
> index b7422e3..587118c 100644
> --- a/arch/arm/mach-omap1/board-ams-delta.c
> +++ b/arch/arm/mach-omap1/board-ams-delta.c
> @@ -232,11 +232,6 @@ static struct gpio _latch_gpios[] __initconst = {
> .label = "dockit2",
> },
> {
> - .gpio = AMS_DELTA_GPIO_PIN_KEYBRD_PWR,
> - .flags = GPIOF_OUT_INIT_LOW,
> - .label = "keybrd_pwr",
> - },
> - {
> .gpio = AMS_DELTA_GPIO_PIN_KEYBRD_DATAOUT,
> .flags = GPIOF_OUT_INIT_LOW,
> .label = "keybrd_dataout",
> diff --git a/arch/arm/plat-omap/include/plat/board-ams-delta.h b/arch/arm/plat-omap/include/plat/board-ams-delta.h
> index 1d0706e..004c827 100644
> --- a/arch/arm/plat-omap/include/plat/board-ams-delta.h
> +++ b/arch/arm/plat-omap/include/plat/board-ams-delta.h
> @@ -28,8 +28,6 @@
>
> #if defined (CONFIG_MACH_AMS_DELTA)
>
> -#define AMD_DELTA_LATCH2_KEYBRD_PWR 0x0100
> -#define AMD_DELTA_LATCH2_KEYBRD_DATA 0x0200
> #define AMD_DELTA_LATCH2_SCARD_RSTIN 0x0400
> #define AMD_DELTA_LATCH2_SCARD_CMDVCC 0x0800
>
> diff --git a/drivers/input/serio/ams_delta_serio.c b/drivers/input/serio/ams_delta_serio.c
> index d4d08bd..1499c7d 100644
> --- a/drivers/input/serio/ams_delta_serio.c
> +++ b/drivers/input/serio/ams_delta_serio.c
> @@ -92,8 +92,7 @@ static irqreturn_t ams_delta_serio_interrupt(int irq, void *dev_id)
> static int ams_delta_serio_open(struct serio *serio)
> {
> /* enable keyboard */
> - ams_delta_latch2_write(AMD_DELTA_LATCH2_KEYBRD_PWR,
> - AMD_DELTA_LATCH2_KEYBRD_PWR);
> + gpio_set_value(AMS_DELTA_GPIO_PIN_KEYBRD_PWR, 1);
>
> return 0;
> }
> @@ -101,9 +100,26 @@ static int ams_delta_serio_open(struct serio *serio)
> static void ams_delta_serio_close(struct serio *serio)
> {
> /* disable keyboard */
> - ams_delta_latch2_write(AMD_DELTA_LATCH2_KEYBRD_PWR, 0);
> + gpio_set_value(AMS_DELTA_GPIO_PIN_KEYBRD_PWR, 0);
> }
>
> +static struct gpio _gpios[] __initconst_or_module = {
> + {
> + .gpio = AMS_DELTA_GPIO_PIN_KEYBRD_DATA,
> + .flags = GPIOF_DIR_IN,
> + .label = "serio-data",
> + },
> + {
> + .gpio = AMS_DELTA_GPIO_PIN_KEYBRD_CLK,
> + .flags = GPIOF_DIR_IN,
> + .label = "serio-clock",
> + },
> + {
> + .gpio = AMS_DELTA_GPIO_PIN_KEYBRD_PWR,
> + .flags = GPIOF_OUT_INIT_LOW,
> + .label = "serio-power",
> + },
> +};
> static int __init ams_delta_serio_init(void)
> {
> int err;
> @@ -123,19 +139,11 @@ static int __init ams_delta_serio_init(void)
> strlcpy(ams_delta_serio->phys, "GPIO/serio0",
> sizeof(ams_delta_serio->phys));
>
> - err = gpio_request(AMS_DELTA_GPIO_PIN_KEYBRD_DATA, "serio-data");
> + err = gpio_request_array(_gpios, ARRAY_SIZE(_gpios));
> if (err) {
> - pr_err("ams_delta_serio: Couldn't request gpio pin for data\n");
> + pr_err("ams_delta_serio: Couldn't request gpio pins\n");
> goto serio;
> }
> - gpio_direction_input(AMS_DELTA_GPIO_PIN_KEYBRD_DATA);
> -
> - err = gpio_request(AMS_DELTA_GPIO_PIN_KEYBRD_CLK, "serio-clock");
> - if (err) {
> - pr_err("ams_delta_serio: couldn't request gpio pin for clock\n");
> - goto gpio_data;
> - }
> - gpio_direction_input(AMS_DELTA_GPIO_PIN_KEYBRD_CLK);
>
> err = request_irq(gpio_to_irq(AMS_DELTA_GPIO_PIN_KEYBRD_CLK),
> ams_delta_serio_interrupt, IRQ_TYPE_EDGE_RISING,
> @@ -143,7 +151,7 @@ static int __init ams_delta_serio_init(void)
> if (err < 0) {
> pr_err("ams_delta_serio: couldn't request gpio interrupt %d\n",
> gpio_to_irq(AMS_DELTA_GPIO_PIN_KEYBRD_CLK));
> - goto gpio_clk;
> + goto gpio;
> }
> /*
> * Since GPIO register handling for keyboard clock pin is performed
> @@ -157,10 +165,8 @@ static int __init ams_delta_serio_init(void)
> dev_info(&ams_delta_serio->dev, "%s\n", ams_delta_serio->name);
>
> return 0;
> -gpio_clk:
> - gpio_free(AMS_DELTA_GPIO_PIN_KEYBRD_CLK);
> -gpio_data:
> - gpio_free(AMS_DELTA_GPIO_PIN_KEYBRD_DATA);
> +gpio:
> + gpio_free_array(_gpios, ARRAY_SIZE(_gpios));
> serio:
> kfree(ams_delta_serio);
> return err;
> @@ -171,7 +177,6 @@ static void __exit ams_delta_serio_exit(void)
> {
> serio_unregister_port(ams_delta_serio);
> free_irq(OMAP_GPIO_IRQ(AMS_DELTA_GPIO_PIN_KEYBRD_CLK), 0);
> - gpio_free(AMS_DELTA_GPIO_PIN_KEYBRD_CLK);
> - gpio_free(AMS_DELTA_GPIO_PIN_KEYBRD_DATA);
> + gpio_free_array(_gpios, ARRAY_SIZE(_gpios));
> }
> module_exit(ams_delta_serio_exit);
> --
> 1.7.3.4
>
> --
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--
Dmitry


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