[PATCH v4 1/4] drm/rockchip: vop: limit maximium resolution to hardware capabilities
Jonas Karlman
jonas at kwiboo.se
Tue Feb 7 10:46:49 UTC 2023
Hi Sascha,
On 2023-02-07 09:44, Sascha Hauer wrote:
> The different VOP variants support different maximum resolutions. Reject
> resolutions that are not supported by a specific variant.
>
> This hasn't been a problem in the upstream driver so far as 1920x1080
> has been the maximum resolution supported by the HDMI driver and that
> resolution is supported by all VOP variants. Now with higher resolutions
> supported in the HDMI driver we have to limit the resolutions to the
> ones supported by the VOP.
>
> The actual maximum resolutions are taken from the Rockchip downstream
> Kernel.
>
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> ---
>
> Notes:
> Changes since v3:
> - new patch
>
> drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 15 ++++++++++
> drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 2 ++
> drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 31 +++++++++++++++++++++
> 3 files changed, 48 insertions(+)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index fa1f4ee6d1950..96b6bd8d17803 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -1174,6 +1174,20 @@ static void vop_crtc_disable_vblank(struct drm_crtc *crtc)
> spin_unlock_irqrestore(&vop->irq_lock, flags);
> }
>
> +static enum drm_mode_status vop_crtc_mode_valid(struct drm_crtc *crtc,
> + const struct drm_display_mode *mode)
> +{
> + struct vop *vop = to_vop(crtc);
> +
> + if (vop->data->max_xres && mode->hdisplay > vop->data->max_xres)
> + return MODE_BAD_HVALUE;
> +
> + if (vop->data->max_yres && mode->vdisplay > vop->data->max_yres)
> + return MODE_BAD_VVALUE;
> +
> + return MODE_OK;
> +}
> +
> static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
> const struct drm_display_mode *mode,
> struct drm_display_mode *adjusted_mode)
> @@ -1585,6 +1599,7 @@ static void vop_crtc_atomic_flush(struct drm_crtc *crtc,
> }
>
> static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = {
> + .mode_valid = vop_crtc_mode_valid,
> .mode_fixup = vop_crtc_mode_fixup,
> .atomic_check = vop_crtc_atomic_check,
> .atomic_begin = vop_crtc_atomic_begin,
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> index 8502849833d93..5c4875ca3f270 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> @@ -225,6 +225,8 @@ struct vop_data {
> const struct vop_win_data *win;
> unsigned int win_size;
> unsigned int lut_size;
> + unsigned int max_xres;
> + unsigned int max_yres;
I would suggest using the same struct vop_rect max_input/output as the
vop2 driver instead of handling this differently between the two.
Regards,
Jonas
>
> #define VOP_FEATURE_OUTPUT_RGB10 BIT(0)
> #define VOP_FEATURE_INTERNAL_RGB BIT(1)
> diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> index 014f99e8928e3..dc1a703d9d1a8 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> @@ -181,6 +181,8 @@ static const struct vop_data rk3036_vop = {
> .output = &rk3036_output,
> .win = rk3036_vop_win_data,
> .win_size = ARRAY_SIZE(rk3036_vop_win_data),
> + .max_xres = 1920,
> + .max_yres = 1080,
> };
>
> static const struct vop_win_phy rk3126_win1_data = {
> @@ -213,6 +215,8 @@ static const struct vop_data rk3126_vop = {
> .output = &rk3036_output,
> .win = rk3126_vop_win_data,
> .win_size = ARRAY_SIZE(rk3126_vop_win_data),
> + .max_xres = 1920,
> + .max_yres = 1080,
> };
>
> static const int px30_vop_intrs[] = {
> @@ -340,6 +344,8 @@ static const struct vop_data px30_vop_big = {
> .output = &px30_output,
> .win = px30_vop_big_win_data,
> .win_size = ARRAY_SIZE(px30_vop_big_win_data),
> + .max_xres = 1920,
> + .max_yres = 1080,
> };
>
> static const struct vop_win_data px30_vop_lit_win_data[] = {
> @@ -356,6 +362,8 @@ static const struct vop_data px30_vop_lit = {
> .output = &px30_output,
> .win = px30_vop_lit_win_data,
> .win_size = ARRAY_SIZE(px30_vop_lit_win_data),
> + .max_xres = 1920,
> + .max_yres = 1080,
> };
>
> static const struct vop_scl_regs rk3066_win_scl = {
> @@ -479,6 +487,8 @@ static const struct vop_data rk3066_vop = {
> .output = &rk3066_output,
> .win = rk3066_vop_win_data,
> .win_size = ARRAY_SIZE(rk3066_vop_win_data),
> + .max_xres = 1920,
> + .max_yres = 1080,
> };
>
> static const struct vop_scl_regs rk3188_win_scl = {
> @@ -585,6 +595,8 @@ static const struct vop_data rk3188_vop = {
> .win = rk3188_vop_win_data,
> .win_size = ARRAY_SIZE(rk3188_vop_win_data),
> .feature = VOP_FEATURE_INTERNAL_RGB,
> + .max_xres = 2048,
> + .max_yres = 1536,
> };
>
> static const struct vop_scl_extension rk3288_win_full_scl_ext = {
> @@ -732,6 +744,13 @@ static const struct vop_data rk3288_vop = {
> .win = rk3288_vop_win_data,
> .win_size = ARRAY_SIZE(rk3288_vop_win_data),
> .lut_size = 1024,
> + /*
> + * This is the maximum resolution for the VOPB, the VOPL can only do
> + * 2560x1600, but we can't distinguish them as they have the same
> + * compatible.
> + */
> + .max_xres = 3840,
> + .max_yres = 2160,
> };
>
> static const int rk3368_vop_intrs[] = {
> @@ -833,6 +852,8 @@ static const struct vop_data rk3368_vop = {
> .misc = &rk3368_misc,
> .win = rk3368_vop_win_data,
> .win_size = ARRAY_SIZE(rk3368_vop_win_data),
> + .max_xres = 4096,
> + .max_yres = 2160,
> };
>
> static const struct vop_intr rk3366_vop_intr = {
> @@ -854,6 +875,8 @@ static const struct vop_data rk3366_vop = {
> .misc = &rk3368_misc,
> .win = rk3368_vop_win_data,
> .win_size = ARRAY_SIZE(rk3368_vop_win_data),
> + .max_xres = 4096,
> + .max_yres = 2160,
> };
>
> static const struct vop_output rk3399_output = {
> @@ -984,6 +1007,8 @@ static const struct vop_data rk3399_vop_big = {
> .win_size = ARRAY_SIZE(rk3399_vop_win_data),
> .win_yuv2yuv = rk3399_vop_big_win_yuv2yuv_data,
> .lut_size = 1024,
> + .max_xres = 4096,
> + .max_yres = 2160,
> };
>
> static const struct vop_win_data rk3399_vop_lit_win_data[] = {
> @@ -1010,6 +1035,8 @@ static const struct vop_data rk3399_vop_lit = {
> .win_size = ARRAY_SIZE(rk3399_vop_lit_win_data),
> .win_yuv2yuv = rk3399_vop_lit_win_yuv2yuv_data,
> .lut_size = 256,
> + .max_xres = 2560,
> + .max_yres = 1600,
> };
>
> static const struct vop_win_data rk3228_vop_win_data[] = {
> @@ -1029,6 +1056,8 @@ static const struct vop_data rk3228_vop = {
> .misc = &rk3368_misc,
> .win = rk3228_vop_win_data,
> .win_size = ARRAY_SIZE(rk3228_vop_win_data),
> + .max_xres = 4096,
> + .max_yres = 2160,
> };
>
> static const struct vop_modeset rk3328_modeset = {
> @@ -1100,6 +1129,8 @@ static const struct vop_data rk3328_vop = {
> .misc = &rk3328_misc,
> .win = rk3328_vop_win_data,
> .win_size = ARRAY_SIZE(rk3328_vop_win_data),
> + .max_xres = 4096,
> + .max_yres = 2160,
> };
>
> static const struct of_device_id vop_driver_dt_match[] = {
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