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Date: Fri, 29 Oct 2021 18:55:14 +0200
From: Christophe Branchereau <cbranchereau@...il.com>
To: Paul Cercueil <paul@...pouillou.net>
Cc: David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Sam Ravnborg <sam@...nborg.org>,
"H . Nikolaus Schaller" <hns@...delico.com>,
Paul Boddie <paul@...die.org.uk>, list@...ndingux.net,
linux-mips@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH v3 3/6] drm/ingenic: Move IPU scale settings to
private state
Reviewed-by: Christophe Branchereau <cbranchereau@...il.com>
On Tue, Oct 26, 2021 at 8:13 PM Paul Cercueil <paul@...pouillou.net> wrote:
>
> The IPU scaling information is computed in the plane's ".atomic_check"
> callback, and used in the ".atomic_update" callback. As such, it is
> state-specific, and should be moved to a private state structure.
>
> Signed-off-by: Paul Cercueil <paul@...pouillou.net>
> ---
> drivers/gpu/drm/ingenic/ingenic-ipu.c | 73 ++++++++++++++++++++-------
> 1 file changed, 54 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/gpu/drm/ingenic/ingenic-ipu.c b/drivers/gpu/drm/ingenic/ingenic-ipu.c
> index c819293b8317..2737fc521e15 100644
> --- a/drivers/gpu/drm/ingenic/ingenic-ipu.c
> +++ b/drivers/gpu/drm/ingenic/ingenic-ipu.c
> @@ -47,6 +47,8 @@ struct soc_info {
>
> struct ingenic_ipu_private_state {
> struct drm_private_state base;
> +
> + unsigned int num_w, num_h, denom_w, denom_h;
> };
>
> struct ingenic_ipu {
> @@ -58,8 +60,6 @@ struct ingenic_ipu {
> const struct soc_info *soc_info;
> bool clk_enabled;
>
> - unsigned int num_w, num_h, denom_w, denom_h;
> -
> dma_addr_t addr_y, addr_u, addr_v;
>
> struct drm_property *sharpness_prop;
> @@ -85,6 +85,30 @@ to_ingenic_ipu_priv_state(struct drm_private_state *state)
> return container_of(state, struct ingenic_ipu_private_state, base);
> }
>
> +static struct ingenic_ipu_private_state *
> +ingenic_ipu_get_priv_state(struct ingenic_ipu *priv, struct drm_atomic_state *state)
> +{
> + struct drm_private_state *priv_state;
> +
> + priv_state = drm_atomic_get_private_obj_state(state, &priv->private_obj);
> + if (IS_ERR(priv_state))
> + return ERR_CAST(priv_state);
> +
> + return to_ingenic_ipu_priv_state(priv_state);
> +}
> +
> +static struct ingenic_ipu_private_state *
> +ingenic_ipu_get_new_priv_state(struct ingenic_ipu *priv, struct drm_atomic_state *state)
> +{
> + struct drm_private_state *priv_state;
> +
> + priv_state = drm_atomic_get_new_private_obj_state(state, &priv->private_obj);
> + if (!priv_state)
> + return NULL;
> +
> + return to_ingenic_ipu_priv_state(priv_state);
> +}
> +
> /*
> * Apply conventional cubic convolution kernel. Both parameters
> * and return value are 15.16 signed fixed-point.
> @@ -305,11 +329,16 @@ static void ingenic_ipu_plane_atomic_update(struct drm_plane *plane,
> const struct drm_format_info *finfo;
> u32 ctrl, stride = 0, coef_index = 0, format = 0;
> bool needs_modeset, upscaling_w, upscaling_h;
> + struct ingenic_ipu_private_state *ipu_state;
> int err;
>
> if (!newstate || !newstate->fb)
> return;
>
> + ipu_state = ingenic_ipu_get_new_priv_state(ipu, state);
> + if (WARN_ON(!ipu_state))
> + return;
> +
> finfo = drm_format_info(newstate->fb->format->format);
>
> if (!ipu->clk_enabled) {
> @@ -482,27 +511,27 @@ static void ingenic_ipu_plane_atomic_update(struct drm_plane *plane,
> if (ipu->soc_info->has_bicubic)
> ctrl |= JZ_IPU_CTRL_ZOOM_SEL;
>
> - upscaling_w = ipu->num_w > ipu->denom_w;
> + upscaling_w = ipu_state->num_w > ipu_state->denom_w;
> if (upscaling_w)
> ctrl |= JZ_IPU_CTRL_HSCALE;
>
> - if (ipu->num_w != 1 || ipu->denom_w != 1) {
> + if (ipu_state->num_w != 1 || ipu_state->denom_w != 1) {
> if (!ipu->soc_info->has_bicubic && !upscaling_w)
> - coef_index |= (ipu->denom_w - 1) << 16;
> + coef_index |= (ipu_state->denom_w - 1) << 16;
> else
> - coef_index |= (ipu->num_w - 1) << 16;
> + coef_index |= (ipu_state->num_w - 1) << 16;
> ctrl |= JZ_IPU_CTRL_HRSZ_EN;
> }
>
> - upscaling_h = ipu->num_h > ipu->denom_h;
> + upscaling_h = ipu_state->num_h > ipu_state->denom_h;
> if (upscaling_h)
> ctrl |= JZ_IPU_CTRL_VSCALE;
>
> - if (ipu->num_h != 1 || ipu->denom_h != 1) {
> + if (ipu_state->num_h != 1 || ipu_state->denom_h != 1) {
> if (!ipu->soc_info->has_bicubic && !upscaling_h)
> - coef_index |= ipu->denom_h - 1;
> + coef_index |= ipu_state->denom_h - 1;
> else
> - coef_index |= ipu->num_h - 1;
> + coef_index |= ipu_state->num_h - 1;
> ctrl |= JZ_IPU_CTRL_VRSZ_EN;
> }
>
> @@ -513,13 +542,13 @@ static void ingenic_ipu_plane_atomic_update(struct drm_plane *plane,
> /* Set the LUT index register */
> regmap_write(ipu->map, JZ_REG_IPU_RSZ_COEF_INDEX, coef_index);
>
> - if (ipu->num_w != 1 || ipu->denom_w != 1)
> + if (ipu_state->num_w != 1 || ipu_state->denom_w != 1)
> ingenic_ipu_set_coefs(ipu, JZ_REG_IPU_HRSZ_COEF_LUT,
> - ipu->num_w, ipu->denom_w);
> + ipu_state->num_w, ipu_state->denom_w);
>
> - if (ipu->num_h != 1 || ipu->denom_h != 1)
> + if (ipu_state->num_h != 1 || ipu_state->denom_h != 1)
> ingenic_ipu_set_coefs(ipu, JZ_REG_IPU_VRSZ_COEF_LUT,
> - ipu->num_h, ipu->denom_h);
> + ipu_state->num_h, ipu_state->denom_h);
>
> /* Clear STATUS register */
> regmap_write(ipu->map, JZ_REG_IPU_STATUS, 0);
> @@ -531,7 +560,8 @@ static void ingenic_ipu_plane_atomic_update(struct drm_plane *plane,
> dev_dbg(ipu->dev, "Scaling %ux%u to %ux%u (%u:%u horiz, %u:%u vert)\n",
> newstate->src_w >> 16, newstate->src_h >> 16,
> newstate->crtc_w, newstate->crtc_h,
> - ipu->num_w, ipu->denom_w, ipu->num_h, ipu->denom_h);
> + ipu_state->num_w, ipu_state->denom_w,
> + ipu_state->num_h, ipu_state->denom_h);
> }
>
> static int ingenic_ipu_plane_atomic_check(struct drm_plane *plane,
> @@ -545,6 +575,7 @@ static int ingenic_ipu_plane_atomic_check(struct drm_plane *plane,
> struct ingenic_ipu *ipu = plane_to_ingenic_ipu(plane);
> struct drm_crtc *crtc = new_plane_state->crtc ?: old_plane_state->crtc;
> struct drm_crtc_state *crtc_state;
> + struct ingenic_ipu_private_state *ipu_state;
>
> if (!crtc)
> return 0;
> @@ -553,6 +584,10 @@ static int ingenic_ipu_plane_atomic_check(struct drm_plane *plane,
> if (WARN_ON(!crtc_state))
> return -EINVAL;
>
> + ipu_state = ingenic_ipu_get_priv_state(ipu, state);
> + if (IS_ERR(ipu_state))
> + return PTR_ERR(ipu_state);
> +
> /* Request a full modeset if we are enabling or disabling the IPU. */
> if (!old_plane_state->crtc ^ !new_plane_state->crtc)
> crtc_state->mode_changed = true;
> @@ -605,10 +640,10 @@ static int ingenic_ipu_plane_atomic_check(struct drm_plane *plane,
> if (num_h > max_h)
> return -EINVAL;
>
> - ipu->num_w = num_w;
> - ipu->num_h = num_h;
> - ipu->denom_w = denom_w;
> - ipu->denom_h = denom_h;
> + ipu_state->num_w = num_w;
> + ipu_state->num_h = num_h;
> + ipu_state->denom_w = denom_w;
> + ipu_state->denom_h = denom_h;
>
> out_check_damage:
> if (ingenic_drm_map_noncoherent(ipu->master))
> --
> 2.33.0
>
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