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SubjectRe: drm/rockchip: Correct vop out_mode configure
Hi Mark,

Reviewed-by: Jeffy Chen <jeffy.chen@rock-chips.com>

On 05/27/2017 07:43 PM, yao mark wrote:
> Force vop output mode on encoder driver seem not a good idea,
>
> EDP, HDMI, DisplayPort all have 10bit input on rk3399,
> On non-10bit vop, vop 8bit output bit[0-7] connect to the
> encoder high 8bit [2-9].
>
> So force RGB10 to RGB888 on vop driver would be better.
>
> And another problem, EDP check crtc id on atomic_check,
> but encoder maybe NULL, so out_mode configure would fail,
> it cause edp no display.
>
> Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
> ---
> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 12 ------------
> drivers/gpu/drm/rockchip/cdn-dp-core.c | 9 ++-------
> drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 8 ++++++++
> drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 3 +++
> drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 2 ++
> 5 files changed, 15 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> index 1bccd82..9606121 100644
> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> @@ -237,8 +237,6 @@ rockchip_dp_drm_encoder_atomic_check(struct drm_encoder *encoder,
> struct drm_connector_state *conn_state)
> {
> struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
> - struct rockchip_dp_device *dp = to_dp(encoder);
> - int ret;
>
> /*
> * The hardware IC designed that VOP must output the RGB10 video
> @@ -250,16 +248,6 @@ rockchip_dp_drm_encoder_atomic_check(struct drm_encoder *encoder,
>
> s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
> s->output_type = DRM_MODE_CONNECTOR_eDP;
> - if (dp->data->chip_type == RK3399_EDP) {
> - /*
> - * For RK3399, VOP Lit must code the out mode to RGB888,
> - * VOP Big must code the out mode to RGB10.
> - */
> - ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node,
> - encoder);
> - if (ret > 0)
> - s->output_mode = ROCKCHIP_OUT_MODE_P888;
> - }
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> index a2169dd..14fa1f8 100644
> --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> @@ -615,7 +615,6 @@ static void cdn_dp_encoder_enable(struct drm_encoder *encoder)
> {
> struct cdn_dp_device *dp = encoder_to_dp(encoder);
> int ret, val;
> - struct rockchip_crtc_state *state;
>
> ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node, encoder);
> if (ret < 0) {
> @@ -625,14 +624,10 @@ static void cdn_dp_encoder_enable(struct drm_encoder *encoder)
>
> DRM_DEV_DEBUG_KMS(dp->dev, "vop %s output to cdn-dp\n",
> (ret) ? "LIT" : "BIG");
> - state = to_rockchip_crtc_state(encoder->crtc->state);
> - if (ret) {
> + if (ret)
> val = DP_SEL_VOP_LIT | (DP_SEL_VOP_LIT << 16);
> - state->output_mode = ROCKCHIP_OUT_MODE_P888;
> - } else {
> + else
> val = DP_SEL_VOP_LIT << 16;
> - state->output_mode = ROCKCHIP_OUT_MODE_AAAA;
> - }
>
> ret = cdn_dp_grf_write(dp, GRF_SOC_CON9, val);
> if (ret)
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index 40a5e6e..c83f481 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -874,6 +874,7 @@ static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
> static void vop_crtc_enable(struct drm_crtc *crtc)
> {
> struct vop *vop = to_vop(crtc);
> + const struct vop_data *vop_data = vop->data;
> struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc->state);
> struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode;
> u16 hsync_len = adjusted_mode->hsync_end - adjusted_mode->hsync_start;
> @@ -966,6 +967,13 @@ static void vop_crtc_enable(struct drm_crtc *crtc)
> DRM_DEV_ERROR(vop->dev, "unsupported connector_type [%d]\n",
> s->output_type);
> }
> +
> + /*
> + * if vop is not support RGB10 output, need force RGB10 to RGB888.
> + */
> + if (s->output_mode == ROCKCHIP_OUT_MODE_AAAA &&
> + !(vop_data->feature & VOP_FEATURE_OUTPUT_RGB10))
> + s->output_mode = ROCKCHIP_OUT_MODE_P888;
> VOP_CTRL_SET(vop, out_mode, s->output_mode);
>
> VOP_CTRL_SET(vop, htotal_pw, (htotal << 16) | hsync_len);
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> index 5a4faa85..9979fd0 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> @@ -142,6 +142,9 @@ struct vop_data {
> const struct vop_intr *intr;
> const struct vop_win_data *win;
> unsigned int win_size;
> +
> +#define VOP_FEATURE_OUTPUT_RGB10 BIT(0)
> + u64 feature;
> };
>
> /* interrupt define */
> diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> index 0da4444..bafd698 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> @@ -275,6 +275,7 @@ static const struct vop_intr rk3288_vop_intr = {
> static const struct vop_data rk3288_vop = {
> .init_table = rk3288_init_reg_table,
> .table_size = ARRAY_SIZE(rk3288_init_reg_table),
> + .feature = VOP_FEATURE_OUTPUT_RGB10,
> .intr = &rk3288_vop_intr,
> .ctrl = &rk3288_ctrl_data,
> .win = rk3288_vop_win_data,
> @@ -343,6 +344,7 @@ static const struct vop_reg_data rk3399_init_reg_table[] = {
> static const struct vop_data rk3399_vop_big = {
> .init_table = rk3399_init_reg_table,
> .table_size = ARRAY_SIZE(rk3399_init_reg_table),
> + .feature = VOP_FEATURE_OUTPUT_RGB10,
> .intr = &rk3399_vop_intr,
> .ctrl = &rk3399_ctrl_data,
> /*
>
>


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