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Message-ID: <20170207161405.GG15150@art_vandelay>
Date: Tue, 7 Feb 2017 11:14:05 -0500
From: Sean Paul <seanpaul@...omium.org>
To: Mark Yao <mark.yao@...k-chips.com>
Cc: David Airlie <airlied@...ux.ie>, Heiko Stuebner <heiko@...ech.de>,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] drm/rockchip: support mode_valid for crtc
On Sun, Feb 05, 2017 at 03:36:36PM +0800, Mark Yao wrote:
> drm crtc already has mode_fixup callback to can do mode check, but
> We actually want to valid display mode on connector getmode time,
> mode_fixup can't do it.
>
> So add a private mode_valid callback to rockchip crtc, connectors can
> check mode with this mode_valid callback.
>
There are some nasty layer violations happening in this set. You should use
mode_fixup if the crtc has limitations on the mode being set.
Sean
> Signed-off-by: Mark Yao <mark.yao@...k-chips.com>
> ---
> drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 2 ++
> drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 15 +++++++++++++++
> drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 7 +++++++
> drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 13 +++++++++++++
> 4 files changed, 37 insertions(+)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
> index fb6226c..d10b15c 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
> @@ -39,6 +39,8 @@
> struct rockchip_crtc_funcs {
> int (*enable_vblank)(struct drm_crtc *crtc);
> void (*disable_vblank)(struct drm_crtc *crtc);
> + enum drm_mode_status (*mode_valid)(struct drm_crtc *crtc,
> + const struct drm_display_mode *mode);
> };
>
> struct rockchip_crtc_state {
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index fb5f001..256fe73 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -853,9 +853,24 @@ 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);
> + const struct vop_data *vop_data = vop->data;
> +
> + if (mode->hdisplay > vop_data->max_output.width)
> + return MODE_BAD_HVALUE;
> + if (mode->vdisplay > vop_data->max_output.height)
> + return MODE_BAD_VVALUE;
> +
> + return MODE_OK;
> +}
> +
> static const struct rockchip_crtc_funcs private_crtc_funcs = {
> .enable_vblank = vop_crtc_enable_vblank,
> .disable_vblank = vop_crtc_disable_vblank,
> + .mode_valid = vop_crtc_mode_valid,
> };
>
> static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> index 1dbc526..9e9dba1 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> @@ -133,6 +133,11 @@ struct vop_win_data {
> enum drm_plane_type type;
> };
>
> +struct vop_rect {
> + int width;
> + int height;
> +};
> +
> struct vop_data {
> const struct vop_reg_data *init_table;
> unsigned int table_size;
> @@ -140,6 +145,8 @@ struct vop_data {
> const struct vop_intr *intr;
> const struct vop_win_data *win;
> unsigned int win_size;
> + struct vop_rect max_input;
> + struct vop_rect max_output;
> };
>
> /* interrupt define */
> diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> index 35c51f3..0c72361 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> @@ -132,6 +132,8 @@
> };
>
> static const struct vop_data rk3036_vop = {
> + .max_input = { 1920, 1080},
> + .max_output = { 1920, 1080},
> .init_table = rk3036_vop_init_reg_table,
> .table_size = ARRAY_SIZE(rk3036_vop_init_reg_table),
> .ctrl = &rk3036_ctrl_data,
> @@ -273,6 +275,13 @@
> };
>
> static const struct vop_data rk3288_vop = {
> + .max_input = { 4096, 8192},
> + /*
> + * TODO: rk3288 have two vop, big one support 3840x2160,
> + * little one only support 2560x1600.
> + * Now force use 3840x2160.
> + */
> + .max_output = { 3840, 2160},
> .init_table = rk3288_init_reg_table,
> .table_size = ARRAY_SIZE(rk3288_init_reg_table),
> .intr = &rk3288_vop_intr,
> @@ -339,6 +348,8 @@
> };
>
> static const struct vop_data rk3399_vop_big = {
> + .max_input = { 4096, 8192},
> + .max_output = { 4096, 2160},
> .init_table = rk3399_init_reg_table,
> .table_size = ARRAY_SIZE(rk3399_init_reg_table),
> .intr = &rk3399_vop_intr,
> @@ -358,6 +369,8 @@
> };
>
> static const struct vop_data rk3399_vop_lit = {
> + .max_input = { 4096, 8192},
> + .max_output = { 2560, 1600},
> .init_table = rk3399_init_reg_table,
> .table_size = ARRAY_SIZE(rk3399_init_reg_table),
> .intr = &rk3399_vop_intr,
> --
> 1.9.1
>
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Sean Paul, Software Engineer, Google / Chromium OS
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