[PATCH 05/10] ARM: OMAP1: ams-delta: Hog "keybrd_dataout" GPIO pin

From: Janusz Krzysztofik
Date: Sat Jun 09 2018 - 10:04:37 EST


"keybrd_dataout" GPIO pin used to be initialized by ams-delta-serio
driver to a state safe for ams-delta-serio device function and not
changed thereafter. As such, it may be assumed not under the driver
control and responsibility for its initialization handed over to board
init file.

Introduce a GPIO hog table and take over control of the
"keybrd_dataout" GPIO pin from the ams-delta-serio driver.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@xxxxxxxxx>
---
arch/arm/mach-omap1/board-ams-delta.c | 8 ++++++++
drivers/input/serio/ams_delta_serio.c | 5 -----
2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c
index 706eb2f9301d..2821284aa0c9 100644
--- a/arch/arm/mach-omap1/board-ams-delta.c
+++ b/arch/arm/mach-omap1/board-ams-delta.c
@@ -574,6 +574,12 @@ static struct gpiod_lookup_table *late_gpio_tables[] __initdata = {
&ams_delta_nand_gpio_table,
};

+static struct gpiod_hog ams_delta_gpio_hogs[] = {
+ GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
+ GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
+ {},
+};
+
static void __init ams_delta_init(void)
{
/* mux pins for uarts */
@@ -594,6 +600,8 @@ static void __init ams_delta_init(void)
omap_cfg_reg(J19_1610_CAM_D6);
omap_cfg_reg(J18_1610_CAM_D7);

+ gpiod_add_hogs(ams_delta_gpio_hogs);
+
omap_serial_init();
omap_register_i2c_bus(1, 100, NULL, 0);

diff --git a/drivers/input/serio/ams_delta_serio.c b/drivers/input/serio/ams_delta_serio.c
index d48beab1d00d..0b4d5a952ecb 100644
--- a/drivers/input/serio/ams_delta_serio.c
+++ b/drivers/input/serio/ams_delta_serio.c
@@ -121,11 +121,6 @@ static const struct gpio ams_delta_gpios[] __initconst_or_module = {
.flags = GPIOF_DIR_IN,
.label = "serio-clock",
},
- {
- .gpio = AMS_DELTA_GPIO_PIN_KEYBRD_DATAOUT,
- .flags = GPIOF_OUT_INIT_LOW,
- .label = "serio-dataout",
- },
};

static int ams_delta_serio_init(struct platform_device *pdev)
--
2.16.1