[PATCH RESEND] ARM: exynos_defconfig: Enable options for display panel support

[PATCH RESEND] ARM: exynos_defconfig: Enable options for display panel support

[Javier Martinez Canillas]

Many Exynos devices have a display panel. Most of them just have
a simple panel while others have more complex configurations that
requires an embedded DisplayPort (eDP) to LVDS bridges.

This patch enables the following features to be built in the kernel
image to support both setups:

- Direct Rendering Manager (DRM)
- DRM bridge registration and lookup framework
- Parade ps8622/ps8625 eDP/LVDS bridge
- NXP ptn3460 eDP/LVDS bridge
- Exynos Fully Interactive Mobile Display controller (FIMD)
- Panel registration and lookup framework
- Simple panels
- Backlight & LCD device support

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
---

Hello Kukjin,

You dropped this patch since exynos drm was causing boot hangs on some
platforms but the fix for that issue is already in linux-next (commit:
f1e9203 clk: samsung: Fix Exynos 5420 pinctrl setup and clock disable
failure due to domain being gated) so I think it makes sense to enable
the display options again.

NOTE: Display panel is still not working since patch "arm: dts: Exynos5:
Use pmu_system_controller phandle for dp phy" is needed [0] but I think
we should enable display options to catch the regressions easier.

Best regards,
Javier

[0]: https://lkml.org/lkml/2014/11/24/10

 arch/arm/configs/exynos_defconfig | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
index 22beed3..27cdd52 100644
--- a/arch/arm/configs/exynos_defconfig
+++ b/arch/arm/configs/exynos_defconfig
@@ -111,11 +111,26 @@ CONFIG_REGULATOR_S2MPA01=y
 CONFIG_REGULATOR_S2MPS11=y
 CONFIG_REGULATOR_S5M8767=y
 CONFIG_REGULATOR_TPS65090=y
+CONFIG_DRM=y
+CONFIG_DRM_BRIDGE=y
+CONFIG_DRM_PTN3460=y
+CONFIG_DRM_PS8622=y
+CONFIG_DRM_EXYNOS=y
+CONFIG_DRM_EXYNOS_FIMD=y
+CONFIG_DRM_EXYNOS_DP=y
+CONFIG_DRM_PANEL=y
+CONFIG_DRM_PANEL_SIMPLE=y
 CONFIG_FB=y
 CONFIG_FB_MODE_HELPERS=y
 CONFIG_FB_SIMPLE=y
 CONFIG_EXYNOS_VIDEO=y
 CONFIG_EXYNOS_MIPI_DSI=y
+CONFIG_BACKLIGHT_LCD_SUPPORT=y
+CONFIG_LCD_CLASS_DEVICE=y
+CONFIG_LCD_PLATFORM=y
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+CONFIG_BACKLIGHT_GENERIC=y
+CONFIG_BACKLIGHT_PWM=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_FONTS=y
 CONFIG_FONT_7x14=y
-- 
2.1.3

[PATCH RESEND] ARM: exynos_defconfig: Enable options for display panel support

[Krzysztof Kozlowski]

On pi?, 2015-01-02 at 17:11 +0100, Javier Martinez Canillas wrote:
> Many Exynos devices have a display panel. Most of them just have
> a simple panel while others have more complex configurations that
> requires an embedded DisplayPort (eDP) to LVDS bridges.
> 
> This patch enables the following features to be built in the kernel
> image to support both setups:
> 
> - Direct Rendering Manager (DRM)
> - DRM bridge registration and lookup framework
> - Parade ps8622/ps8625 eDP/LVDS bridge
> - NXP ptn3460 eDP/LVDS bridge
> - Exynos Fully Interactive Mobile Display controller (FIMD)
> - Panel registration and lookup framework
> - Simple panels
> - Backlight & LCD device support
> 
> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
> Tested-by: Kevin Hilman <khilman@linaro.org>
> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
> ---
> 
> Hello Kukjin,
> 
> You dropped this patch since exynos drm was causing boot hangs on some
> platforms but the fix for that issue is already in linux-next (commit:
> f1e9203 clk: samsung: Fix Exynos 5420 pinctrl setup and clock disable
> failure due to domain being gated) so I think it makes sense to enable
> the display options again.

I think these issues were unrelated to each other. DRM was disabled
because of infinite deferred probing of DRM components. I saw Inki was
sending some patches for it but I am not sure if they were merged.

Best regards,
Krzysztof


> 
> NOTE: Display panel is still not working since patch "arm: dts: Exynos5:
> Use pmu_system_controller phandle for dp phy" is needed [0] but I think
> we should enable display options to catch the regressions easier.
> 
> Best regards,
> Javier
> 
> [0]: https://lkml.org/lkml/2014/11/24/10
> 
>  arch/arm/configs/exynos_defconfig | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
> index 22beed3..27cdd52 100644
> --- a/arch/arm/configs/exynos_defconfig
> +++ b/arch/arm/configs/exynos_defconfig
> @@ -111,11 +111,26 @@ CONFIG_REGULATOR_S2MPA01=y
>  CONFIG_REGULATOR_S2MPS11=y
>  CONFIG_REGULATOR_S5M8767=y
>  CONFIG_REGULATOR_TPS65090=y
> +CONFIG_DRM=y
> +CONFIG_DRM_BRIDGE=y
> +CONFIG_DRM_PTN3460=y
> +CONFIG_DRM_PS8622=y
> +CONFIG_DRM_EXYNOS=y
> +CONFIG_DRM_EXYNOS_FIMD=y
> +CONFIG_DRM_EXYNOS_DP=y
> +CONFIG_DRM_PANEL=y
> +CONFIG_DRM_PANEL_SIMPLE=y
>  CONFIG_FB=y
>  CONFIG_FB_MODE_HELPERS=y
>  CONFIG_FB_SIMPLE=y
>  CONFIG_EXYNOS_VIDEO=y
>  CONFIG_EXYNOS_MIPI_DSI=y
> +CONFIG_BACKLIGHT_LCD_SUPPORT=y
> +CONFIG_LCD_CLASS_DEVICE=y
> +CONFIG_LCD_PLATFORM=y
> +CONFIG_BACKLIGHT_CLASS_DEVICE=y
> +CONFIG_BACKLIGHT_GENERIC=y
> +CONFIG_BACKLIGHT_PWM=y
>  CONFIG_FRAMEBUFFER_CONSOLE=y
>  CONFIG_FONTS=y
>  CONFIG_FONT_7x14=y

[PATCH RESEND] ARM: exynos_defconfig: Enable options for display panel support

[Javier Martinez Canillas]

Hello Krzysztof,

>> Hello Kukjin,
>> 
>> You dropped this patch since exynos drm was causing boot hangs on some
>> platforms but the fix for that issue is already in linux-next (commit:
>> f1e9203 clk: samsung: Fix Exynos 5420 pinctrl setup and clock disable
>> failure due to domain being gated) so I think it makes sense to enable
>> the display options again.
> 
> I think these issues were unrelated to each other. DRM was disabled
> because of infinite deferred probing of DRM components. I saw Inki was
> sending some patches for it but I am not sure if they were merged.
>

Ups, you are completely right and it was my bad for pasting the wrong
commit fixing the boot hang when DRM was enabled, I actually meant commit:
("820687be drm/exynos: move Exynos platform drivers registration to init")
which also landed in v3.19-rc1.

Sorry for the confusion.
 
> Best regards,
> Krzysztof

Best regards,
Javier

[PATCH RESEND] ARM: exynos_defconfig: Enable options for display panel support

[Kukjin Kim]

Javier Martinez Canillas wrote:
> 
> Many Exynos devices have a display panel. Most of them just have
> a simple panel while others have more complex configurations that
> requires an embedded DisplayPort (eDP) to LVDS bridges.
> 
> This patch enables the following features to be built in the kernel
> image to support both setups:
> 
> - Direct Rendering Manager (DRM)
> - DRM bridge registration and lookup framework
> - Parade ps8622/ps8625 eDP/LVDS bridge
> - NXP ptn3460 eDP/LVDS bridge
> - Exynos Fully Interactive Mobile Display controller (FIMD)
> - Panel registration and lookup framework
> - Simple panels
> - Backlight & LCD device support
> 
> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
> Tested-by: Kevin Hilman <khilman@linaro.org>
> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
> ---
> 
> Hello Kukjin,
> 
Hi Javier,

Happy new year :)

> You dropped this patch since exynos drm was causing boot hangs on some
> platforms but the fix for that issue is already in linux-next (commit:
> f1e9203 clk: samsung: Fix Exynos 5420 pinctrl setup and clock disable
> failure due to domain being gated) so I think it makes sense to enable
> the display options again.
> 
> NOTE: Display panel is still not working since patch "arm: dts: Exynos5:
> Use pmu_system_controller phandle for dp phy" is needed [0] but I think
> we should enable display options to catch the regressions easier.
> 
Agreed with your suggestion and I'll pick this up into Samsung tree soon.

Thanks,
Kukjin

[PATCH RESEND] ARM: exynos_defconfig: Enable options for display panel support

[Javier Martinez Canillas]

Hello Kukjin,

>> 
>> Hello Kukjin,
>> 
> Hi Javier,
> 
> Happy new year :)
>

Thanks, happy new year for you as well!

>> You dropped this patch since exynos drm was causing boot hangs on some
>> platforms but the fix for that issue is already in linux-next (commit:
>> f1e9203 clk: samsung: Fix Exynos 5420 pinctrl setup and clock disable
>> failure due to domain being gated) so I think it makes sense to enable
>> the display options again.
>> 
>> NOTE: Display panel is still not working since patch "arm: dts: Exynos5:
>> Use pmu_system_controller phandle for dp phy" is needed [0] but I think
>> we should enable display options to catch the regressions easier.
>> 
> Agreed with your suggestion and I'll pick this up into Samsung tree soon.
> 

Perfect, I hope you can pick my peach pit/pi and snow DTS updates series
as well since those patches have been in the list for some time.

> Thanks,
> Kukjin
> 

Best regards,
Javier