[U-Boot] [PATCH 04/21] sunxi: display: Fix gpio handling to work with the device-model

Hans de Goede
2015-04-24T13:48:13Z

The device-model gpio functions may return another value then -1 as error,
make the sunxi display code properly handle this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/video/sunxi_display.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index 07c7a18..79a513c 100644
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -600,19 +600,19 @@ static void sunxi_lcdc_panel_enable(void)
* white while the lcd inits.
*/
pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_BL_EN);
- if (pin != -1) {
+ if (pin >= 0) {
gpio_request(pin, "lcd_backlight_enable");
gpio_direction_output(pin, 0);
}

pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_BL_PWM);
- if (pin != -1) {
+ if (pin >= 0) {
gpio_request(pin, "lcd_backlight_pwm");
gpio_direction_output(pin, PWM_OFF);
}

reset_pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_RESET);
- if (reset_pin != -1) {
+ if (reset_pin >= 0) {
gpio_request(reset_pin, "lcd_reset");
gpio_direction_output(reset_pin, 0); /* Assert reset */
}
@@ -620,12 +620,12 @@ static void sunxi_lcdc_panel_enable(void)
/* Give the backlight some time to turn off and power up the panel. */
mdelay(40);
pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_POWER);
- if (pin != -1) {
+ if (pin >= 0) {
gpio_request(pin, "lcd_power");
gpio_direction_output(pin, 1);
}

- if (reset_pin != -1)
+ if (reset_pin >= 0)
gpio_direction_output(reset_pin, 1); /* De-assert reset */
}

@@ -640,11 +640,11 @@ static void sunxi_lcdc_backlight_enable(void)
mdelay(40);

pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_BL_EN);
- if (pin != -1)
+ if (pin >= 0)
gpio_direction_output(pin, 1);

pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_BL_PWM);
- if (pin != -1)
+ if (pin >= 0)
gpio_direction_output(pin, PWM_ON);
}

@@ -961,7 +961,7 @@ static void sunxi_vga_external_dac_enable(void)
int pin;

pin = sunxi_name_to_gpio(CONFIG_VIDEO_VGA_EXTERNAL_DAC_EN);
- if (pin != -1) {
+ if (pin >= 0) {
gpio_request(pin, "vga_enable");
gpio_direction_output(pin, 1);
}
--
2.3.5