ARM: OMAP1: ams-delta: Hog "keybrd_dataout" GPIO pin

"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@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/board-ams-delta.c

@@ -607,6 +607,12 @@ static int gpiochip_match_by_label(struct gpio_chip *chip, void *data)
 	return !strcmp(label, chip->label);
 }
 
+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 */
@@ -627,6 +633,8 @@ 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);
 

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)