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SubjectRe: [PATCH 16/23] drm/sun4i: Add A83T support
在 2017-10-17 17:06,Maxime Ripard 写道:
> Add support for the A83T display pipeline.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
> ---
> Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt | 3 +++
> drivers/gpu/drm/sun4i/sun4i_drv.c | 2 ++
> drivers/gpu/drm/sun4i/sun4i_tcon.c | 1 +
> drivers/gpu/drm/sun4i/sun8i_mixer.c | 4 ++++
> 4 files changed, 10 insertions(+)
>
> diff --git
> a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> index 46df3b78ae9e..c0fa233ec1fc 100644
> --- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> +++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> @@ -90,6 +90,7 @@ Required properties:
> * allwinner,sun6i-a31-tcon
> * allwinner,sun6i-a31s-tcon
> * allwinner,sun8i-a33-tcon
> + * allwinner,sun8i-a83t-tcon

Should be tcon0 -- tcon0 on A83T has only channel 0 and tcon1 has only
channel 1.

> * allwinner,sun8i-v3s-tcon
> - reg: base address and size of memory-mapped region
> - interrupts: interrupt associated to this IP
> @@ -209,6 +210,7 @@ supported.
>
> Required properties:
> - compatible: value must be one of:
> + * allwinner,sun8i-a83t-de2-mixer

Since the capability of mixer0 and mixer1 are different (smart
backlight, write-back, VEP of the VI channel and extra UI
channels), I suggest to use ID-specific compatibles here.

> * allwinner,sun8i-v3s-de2-mixer
> - reg: base address and size of the memory-mapped region.
> - clocks: phandles to the clocks feeding the mixer
> @@ -236,6 +238,7 @@ Required properties:
> * allwinner,sun6i-a31-display-engine
> * allwinner,sun6i-a31s-display-engine
> * allwinner,sun8i-a33-display-engine
> + * allwinner,sun8i-a83t-display-engine
> * allwinner,sun8i-v3s-display-engine
>
> - allwinner,pipelines: list of phandle to the display engine
> diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c
> b/drivers/gpu/drm/sun4i/sun4i_drv.c
> index a27efad9bc76..439f116bb3b5 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_drv.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
> @@ -189,6 +189,7 @@ static bool sun4i_drv_node_is_tcon(struct
> device_node *node)
> of_device_is_compatible(node, "allwinner,sun6i-a31-tcon") ||
> of_device_is_compatible(node, "allwinner,sun6i-a31s-tcon") ||
> of_device_is_compatible(node, "allwinner,sun8i-a33-tcon") ||
> + of_device_is_compatible(node, "allwinner,sun8i-a83t-tcon") ||
> of_device_is_compatible(node, "allwinner,sun8i-v3s-tcon");
> }
>
> @@ -347,6 +348,7 @@ static const struct of_device_id
> sun4i_drv_of_table[] = {
> { .compatible = "allwinner,sun6i-a31-display-engine" },
> { .compatible = "allwinner,sun6i-a31s-display-engine" },
> { .compatible = "allwinner,sun8i-a33-display-engine" },
> + { .compatible = "allwinner,sun8i-a83t-display-engine" },
> { .compatible = "allwinner,sun8i-v3s-display-engine" },
> { }
> };
> diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c
> b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> index 6a20a467ee6d..eb3c8bad4977 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> @@ -1063,6 +1063,7 @@ static const struct of_device_id
> sun4i_tcon_of_table[] = {
> { .compatible = "allwinner,sun6i-a31-tcon", .data = &sun6i_a31_quirks
> },
> { .compatible = "allwinner,sun6i-a31s-tcon", .data =
> &sun6i_a31s_quirks },
> { .compatible = "allwinner,sun8i-a33-tcon", .data = &sun8i_a33_quirks
> },
> + { .compatible = "allwinner,sun8i-a83t-tcon", .data =
> &sun8i_v3s_quirks },
> { .compatible = "allwinner,sun8i-v3s-tcon", .data = &sun8i_v3s_quirks
> },
> { }
> };
> diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c
> b/drivers/gpu/drm/sun4i/sun8i_mixer.c
> index 86c6c24b5105..c6030ce130d3 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
> @@ -385,6 +385,10 @@ static const struct sun8i_mixer_cfg
> sun8i_v3s_mixer_cfg = {
>
> static const struct of_device_id sun8i_mixer_of_table[] = {
> {
> + .compatible = "allwinner,sun8i-a83t-de2-mixer",
> + .data = &sun8i_v3s_mixer_cfg,

As I said, V3s has 2 VI channels, so it totally shouldn't share
config with A83T.

> + },
> + {
> .compatible = "allwinner,sun8i-v3s-de2-mixer",
> .data = &sun8i_v3s_mixer_cfg,
> },

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