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video: exynos: fix modular build

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The s6e8ax0 driver has a dependency on BACKLIGHT_CLASS_DEVICE,
which can be configured as a loadable module, so we have to
make the driver a tristate symbol as well, to avoid this error:

drivers/built-in.o: In function `s6e8ax0_probe':
:(.text+0x23a48): undefined reference to `devm_backlight_device_register'

This also means we get another error from a missing export, which
this fixes as well:

ERROR: "exynos_mipi_dsi_register_lcd_driver" [drivers/video/fbdev/exynos/s6e8ax0.ko] undefined!

The drivers are all written to be loadable modules already,
except the Kconfig options for that are missing, which makes
the patch really easy.

Finally, the EXYNOS_VIDEO option is turned into tristate as well
for good measure, as all framebuffer drivers should be configurable
as modules, though this change is not strictly necessary.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Arnd Bergmann 2016-02-26 13:38:08 +01:00 committed by Tomi Valkeinen
parent 713fced8d1
commit 5a63ddf60e
3 changed files with 8 additions and 5 deletions
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6
drivers/video/fbdev/exynos/Kconfig
View file

@ -3,7 +3,7 @@
#
menuconfig EXYNOS_VIDEO
bool "Exynos Video driver support"
tristate "Exynos Video driver support"
depends on ARCH_S5PV210 || ARCH_EXYNOS
help
This enables support for EXYNOS Video device.
@ -15,13 +15,13 @@ if EXYNOS_VIDEO
#
config EXYNOS_MIPI_DSI
bool "EXYNOS MIPI DSI driver support."
tristate "EXYNOS MIPI DSI driver support."
select GENERIC_PHY
help
This enables support for MIPI-DSI device.
config EXYNOS_LCD_S6E8AX0
bool "S6E8AX0 MIPI AMOLED LCD Driver"
tristate "S6E8AX0 MIPI AMOLED LCD Driver"
depends on EXYNOS_MIPI_DSI && BACKLIGHT_CLASS_DEVICE
depends on (LCD_CLASS_DEVICE = y)
default n

6
drivers/video/fbdev/exynos/Makefile
View file

@ -2,6 +2,8 @@
# Makefile for the exynos video drivers.
#
obj-$(CONFIG_EXYNOS_MIPI_DSI) += exynos_mipi_dsi.o exynos_mipi_dsi_common.o \
exynos_mipi_dsi_lowlevel.o
obj-$(CONFIG_EXYNOS_MIPI_DSI) += exynos-mipi-dsi-mod.o
exynos-mipi-dsi-mod-objs += exynos_mipi_dsi.o exynos_mipi_dsi_common.o \
exynos_mipi_dsi_lowlevel.o
obj-$(CONFIG_EXYNOS_LCD_S6E8AX0) += s6e8ax0.o

1
drivers/video/fbdev/exynos/exynos_mipi_dsi.c
View file

@ -263,6 +263,7 @@ int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv)
return 0;
}
EXPORT_SYMBOL_GPL(exynos_mipi_dsi_register_lcd_driver);
static struct mipi_dsim_ddi *exynos_mipi_dsi_bind_lcd_ddi(
struct mipi_dsim_device *dsim,