[PATCH -next] drm/bridge: lt8912b: DRM_LONTIUM_LT8912B select GPIOLIB

[Zhang Jianhua]

If CONFIG_DRM_LONTIUM_LT8912B=y, the following errors will be seen while
compiling lontium-lt8912b.c

drivers/gpu/drm/bridge/lontium-lt8912b.c: In function
‘lt8912_hard_power_on’:
drivers/gpu/drm/bridge/lontium-lt8912b.c:252:2: error: implicit
declaration of function ‘gpiod_set_value_cansleep’; did you mean
‘gpio_set_value_cansleep’? [-Werror=implicit-function-declaration]
  gpiod_set_value_cansleep(lt->gp_reset, 0);
  ^~~~~~~~~~~~~~~~~~~~~~~~
  gpio_set_value_cansleep
drivers/gpu/drm/bridge/lontium-lt8912b.c: In function ‘lt8912_parse_dt’:
drivers/gpu/drm/bridge/lontium-lt8912b.c:628:13: error: implicit
declaration of function ‘devm_gpiod_get_optional’; did you mean
‘devm_gpio_request_one’? [-Werror=implicit-function-declaration]
  gp_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
             ^~~~~~~~~~~~~~~~~~~~~~~
             devm_gpio_request_one
drivers/gpu/drm/bridge/lontium-lt8912b.c:628:51: error: ‘GPIOD_OUT_HIGH’
undeclared (first use in this function); did you mean ‘GPIOF_INIT_HIGH’?
  gp_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
                                                   ^~~~~~~~~~~~~~
                                                   GPIOF_INIT_HIGH

Signed-off-by: Zhang Jianhua <zhangjianhua18 at huawei.com>
---
 drivers/gpu/drm/bridge/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index dba62f92d051..caa9658ec933 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -67,6 +67,7 @@ config DRM_LONTIUM_LT8912B
 	select DRM_PANEL_BRIDGE
 	select DRM_KMS_HELPER
 	select REGMAP_I2C
+	select GPIOLIB
 	help
 	  Driver for Lontium LT8912B DSI to HDMI bridge
 	  chip driver.
-- 
2.17.1