[Intel-gfx] [PATCH 03/15] drm/i915: Relocate intel_atomic_setup_scalers()
Jani Nikula
jani.nikula at linux.intel.com
Wed Apr 19 15:16:05 UTC 2023
On Tue, 18 Apr 2023, Ville Syrjala <ville.syrjala at linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> Move intel_atomic_setup_scalers() next to the other scaler
> code in skl_scaler.c.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula at intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_atomic.c | 256 -------------------
> drivers/gpu/drm/i915/display/intel_atomic.h | 4 -
> drivers/gpu/drm/i915/display/skl_scaler.c | 257 ++++++++++++++++++++
> drivers/gpu/drm/i915/display/skl_scaler.h | 10 +-
> 4 files changed, 265 insertions(+), 262 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c
> index 61011641f6ab..7cf51dd8c056 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic.c
> +++ b/drivers/gpu/drm/i915/display/intel_atomic.c
> @@ -310,262 +310,6 @@ intel_crtc_destroy_state(struct drm_crtc *crtc,
> kfree(crtc_state);
> }
>
> -static int intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_state,
> - int num_scalers_need, struct intel_crtc *intel_crtc,
> - const char *name, int idx,
> - struct intel_plane_state *plane_state,
> - int *scaler_id)
> -{
> - struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
> - int j;
> - u32 mode;
> -
> - if (*scaler_id < 0) {
> - /* find a free scaler */
> - for (j = 0; j < intel_crtc->num_scalers; j++) {
> - if (scaler_state->scalers[j].in_use)
> - continue;
> -
> - *scaler_id = j;
> - scaler_state->scalers[*scaler_id].in_use = 1;
> - break;
> - }
> - }
> -
> - if (drm_WARN(&dev_priv->drm, *scaler_id < 0,
> - "Cannot find scaler for %s:%d\n", name, idx))
> - return -EINVAL;
> -
> - /* set scaler mode */
> - if (plane_state && plane_state->hw.fb &&
> - plane_state->hw.fb->format->is_yuv &&
> - plane_state->hw.fb->format->num_planes > 1) {
> - struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
> - if (DISPLAY_VER(dev_priv) == 9) {
> - mode = SKL_PS_SCALER_MODE_NV12;
> - } else if (icl_is_hdr_plane(dev_priv, plane->id)) {
> - /*
> - * On gen11+'s HDR planes we only use the scaler for
> - * scaling. They have a dedicated chroma upsampler, so
> - * we don't need the scaler to upsample the UV plane.
> - */
> - mode = PS_SCALER_MODE_NORMAL;
> - } else {
> - struct intel_plane *linked =
> - plane_state->planar_linked_plane;
> -
> - mode = PS_SCALER_MODE_PLANAR;
> -
> - if (linked)
> - mode |= PS_PLANE_Y_SEL(linked->id);
> - }
> - } else if (DISPLAY_VER(dev_priv) >= 10) {
> - mode = PS_SCALER_MODE_NORMAL;
> - } else if (num_scalers_need == 1 && intel_crtc->num_scalers > 1) {
> - /*
> - * when only 1 scaler is in use on a pipe with 2 scalers
> - * scaler 0 operates in high quality (HQ) mode.
> - * In this case use scaler 0 to take advantage of HQ mode
> - */
> - scaler_state->scalers[*scaler_id].in_use = 0;
> - *scaler_id = 0;
> - scaler_state->scalers[0].in_use = 1;
> - mode = SKL_PS_SCALER_MODE_HQ;
> - } else {
> - mode = SKL_PS_SCALER_MODE_DYN;
> - }
> -
> - /*
> - * FIXME: we should also check the scaler factors for pfit, so
> - * this shouldn't be tied directly to planes.
> - */
> - if (plane_state && plane_state->hw.fb) {
> - const struct drm_framebuffer *fb = plane_state->hw.fb;
> - const struct drm_rect *src = &plane_state->uapi.src;
> - const struct drm_rect *dst = &plane_state->uapi.dst;
> - int hscale, vscale, max_vscale, max_hscale;
> -
> - /*
> - * FIXME: When two scalers are needed, but only one of
> - * them needs to downscale, we should make sure that
> - * the one that needs downscaling support is assigned
> - * as the first scaler, so we don't reject downscaling
> - * unnecessarily.
> - */
> -
> - if (DISPLAY_VER(dev_priv) >= 14) {
> - /*
> - * On versions 14 and up, only the first
> - * scaler supports a vertical scaling factor
> - * of more than 1.0, while a horizontal
> - * scaling factor of 3.0 is supported.
> - */
> - max_hscale = 0x30000 - 1;
> - if (*scaler_id == 0)
> - max_vscale = 0x30000 - 1;
> - else
> - max_vscale = 0x10000;
> -
> - } else if (DISPLAY_VER(dev_priv) >= 10 ||
> - !intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) {
> - max_hscale = 0x30000 - 1;
> - max_vscale = 0x30000 - 1;
> - } else {
> - max_hscale = 0x20000 - 1;
> - max_vscale = 0x20000 - 1;
> - }
> -
> - /*
> - * FIXME: We should change the if-else block above to
> - * support HQ vs dynamic scaler properly.
> - */
> -
> - /* Check if required scaling is within limits */
> - hscale = drm_rect_calc_hscale(src, dst, 1, max_hscale);
> - vscale = drm_rect_calc_vscale(src, dst, 1, max_vscale);
> -
> - if (hscale < 0 || vscale < 0) {
> - drm_dbg_kms(&dev_priv->drm,
> - "Scaler %d doesn't support required plane scaling\n",
> - *scaler_id);
> - drm_rect_debug_print("src: ", src, true);
> - drm_rect_debug_print("dst: ", dst, false);
> -
> - return -EINVAL;
> - }
> - }
> -
> - drm_dbg_kms(&dev_priv->drm, "Attached scaler id %u.%u to %s:%d\n",
> - intel_crtc->pipe, *scaler_id, name, idx);
> - scaler_state->scalers[*scaler_id].mode = mode;
> -
> - return 0;
> -}
> -
> -/**
> - * intel_atomic_setup_scalers() - setup scalers for crtc per staged requests
> - * @dev_priv: i915 device
> - * @intel_crtc: intel crtc
> - * @crtc_state: incoming crtc_state to validate and setup scalers
> - *
> - * This function sets up scalers based on staged scaling requests for
> - * a @crtc and its planes. It is called from crtc level check path. If request
> - * is a supportable request, it attaches scalers to requested planes and crtc.
> - *
> - * This function takes into account the current scaler(s) in use by any planes
> - * not being part of this atomic state
> - *
> - * Returns:
> - * 0 - scalers were setup succesfully
> - * error code - otherwise
> - */
> -int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
> - struct intel_crtc *intel_crtc,
> - struct intel_crtc_state *crtc_state)
> -{
> - struct drm_plane *plane = NULL;
> - struct intel_plane *intel_plane;
> - struct intel_plane_state *plane_state = NULL;
> - struct intel_crtc_scaler_state *scaler_state =
> - &crtc_state->scaler_state;
> - struct drm_atomic_state *drm_state = crtc_state->uapi.state;
> - struct intel_atomic_state *intel_state = to_intel_atomic_state(drm_state);
> - int num_scalers_need;
> - int i;
> -
> - num_scalers_need = hweight32(scaler_state->scaler_users);
> -
> - /*
> - * High level flow:
> - * - staged scaler requests are already in scaler_state->scaler_users
> - * - check whether staged scaling requests can be supported
> - * - add planes using scalers that aren't in current transaction
> - * - assign scalers to requested users
> - * - as part of plane commit, scalers will be committed
> - * (i.e., either attached or detached) to respective planes in hw
> - * - as part of crtc_commit, scaler will be either attached or detached
> - * to crtc in hw
> - */
> -
> - /* fail if required scalers > available scalers */
> - if (num_scalers_need > intel_crtc->num_scalers){
> - drm_dbg_kms(&dev_priv->drm,
> - "Too many scaling requests %d > %d\n",
> - num_scalers_need, intel_crtc->num_scalers);
> - return -EINVAL;
> - }
> -
> - /* walkthrough scaler_users bits and start assigning scalers */
> - for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) {
> - int *scaler_id;
> - const char *name;
> - int idx, ret;
> -
> - /* skip if scaler not required */
> - if (!(scaler_state->scaler_users & (1 << i)))
> - continue;
> -
> - if (i == SKL_CRTC_INDEX) {
> - name = "CRTC";
> - idx = intel_crtc->base.base.id;
> -
> - /* panel fitter case: assign as a crtc scaler */
> - scaler_id = &scaler_state->scaler_id;
> - } else {
> - name = "PLANE";
> -
> - /* plane scaler case: assign as a plane scaler */
> - /* find the plane that set the bit as scaler_user */
> - plane = drm_state->planes[i].ptr;
> -
> - /*
> - * to enable/disable hq mode, add planes that are using scaler
> - * into this transaction
> - */
> - if (!plane) {
> - struct drm_plane_state *state;
> -
> - /*
> - * GLK+ scalers don't have a HQ mode so it
> - * isn't necessary to change between HQ and dyn mode
> - * on those platforms.
> - */
> - if (DISPLAY_VER(dev_priv) >= 10)
> - continue;
> -
> - plane = drm_plane_from_index(&dev_priv->drm, i);
> - state = drm_atomic_get_plane_state(drm_state, plane);
> - if (IS_ERR(state)) {
> - drm_dbg_kms(&dev_priv->drm,
> - "Failed to add [PLANE:%d] to drm_state\n",
> - plane->base.id);
> - return PTR_ERR(state);
> - }
> - }
> -
> - intel_plane = to_intel_plane(plane);
> - idx = plane->base.id;
> -
> - /* plane on different crtc cannot be a scaler user of this crtc */
> - if (drm_WARN_ON(&dev_priv->drm,
> - intel_plane->pipe != intel_crtc->pipe))
> - continue;
> -
> - plane_state = intel_atomic_get_new_plane_state(intel_state,
> - intel_plane);
> - scaler_id = &plane_state->scaler_id;
> - }
> -
> - ret = intel_atomic_setup_scaler(scaler_state, num_scalers_need,
> - intel_crtc, name, idx,
> - plane_state, scaler_id);
> - if (ret < 0)
> - return ret;
> - }
> -
> - return 0;
> -}
> -
> struct drm_atomic_state *
> intel_atomic_state_alloc(struct drm_device *dev)
> {
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic.h b/drivers/gpu/drm/i915/display/intel_atomic.h
> index 1dc439983dd9..e506f6a87344 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic.h
> +++ b/drivers/gpu/drm/i915/display/intel_atomic.h
> @@ -52,8 +52,4 @@ struct intel_crtc_state *
> intel_atomic_get_crtc_state(struct drm_atomic_state *state,
> struct intel_crtc *crtc);
>
> -int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
> - struct intel_crtc *intel_crtc,
> - struct intel_crtc_state *crtc_state);
> -
> #endif /* __INTEL_ATOMIC_H__ */
> diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c
> index 0e7e014fcc71..62443834f64e 100644
> --- a/drivers/gpu/drm/i915/display/skl_scaler.c
> +++ b/drivers/gpu/drm/i915/display/skl_scaler.c
> @@ -348,6 +348,263 @@ int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
> return 0;
> }
>
> +static int intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_state,
> + int num_scalers_need, struct intel_crtc *intel_crtc,
> + const char *name, int idx,
> + struct intel_plane_state *plane_state,
> + int *scaler_id)
> +{
> + struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
> + int j;
> + u32 mode;
> +
> + if (*scaler_id < 0) {
> + /* find a free scaler */
> + for (j = 0; j < intel_crtc->num_scalers; j++) {
> + if (scaler_state->scalers[j].in_use)
> + continue;
> +
> + *scaler_id = j;
> + scaler_state->scalers[*scaler_id].in_use = 1;
> + break;
> + }
> + }
> +
> + if (drm_WARN(&dev_priv->drm, *scaler_id < 0,
> + "Cannot find scaler for %s:%d\n", name, idx))
> + return -EINVAL;
> +
> + /* set scaler mode */
> + if (plane_state && plane_state->hw.fb &&
> + plane_state->hw.fb->format->is_yuv &&
> + plane_state->hw.fb->format->num_planes > 1) {
> + struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
> +
> + if (DISPLAY_VER(dev_priv) == 9) {
> + mode = SKL_PS_SCALER_MODE_NV12;
> + } else if (icl_is_hdr_plane(dev_priv, plane->id)) {
> + /*
> + * On gen11+'s HDR planes we only use the scaler for
> + * scaling. They have a dedicated chroma upsampler, so
> + * we don't need the scaler to upsample the UV plane.
> + */
> + mode = PS_SCALER_MODE_NORMAL;
> + } else {
> + struct intel_plane *linked =
> + plane_state->planar_linked_plane;
> +
> + mode = PS_SCALER_MODE_PLANAR;
> +
> + if (linked)
> + mode |= PS_PLANE_Y_SEL(linked->id);
> + }
> + } else if (DISPLAY_VER(dev_priv) >= 10) {
> + mode = PS_SCALER_MODE_NORMAL;
> + } else if (num_scalers_need == 1 && intel_crtc->num_scalers > 1) {
> + /*
> + * when only 1 scaler is in use on a pipe with 2 scalers
> + * scaler 0 operates in high quality (HQ) mode.
> + * In this case use scaler 0 to take advantage of HQ mode
> + */
> + scaler_state->scalers[*scaler_id].in_use = 0;
> + *scaler_id = 0;
> + scaler_state->scalers[0].in_use = 1;
> + mode = SKL_PS_SCALER_MODE_HQ;
> + } else {
> + mode = SKL_PS_SCALER_MODE_DYN;
> + }
> +
> + /*
> + * FIXME: we should also check the scaler factors for pfit, so
> + * this shouldn't be tied directly to planes.
> + */
> + if (plane_state && plane_state->hw.fb) {
> + const struct drm_framebuffer *fb = plane_state->hw.fb;
> + const struct drm_rect *src = &plane_state->uapi.src;
> + const struct drm_rect *dst = &plane_state->uapi.dst;
> + int hscale, vscale, max_vscale, max_hscale;
> +
> + /*
> + * FIXME: When two scalers are needed, but only one of
> + * them needs to downscale, we should make sure that
> + * the one that needs downscaling support is assigned
> + * as the first scaler, so we don't reject downscaling
> + * unnecessarily.
> + */
> +
> + if (DISPLAY_VER(dev_priv) >= 14) {
> + /*
> + * On versions 14 and up, only the first
> + * scaler supports a vertical scaling factor
> + * of more than 1.0, while a horizontal
> + * scaling factor of 3.0 is supported.
> + */
> + max_hscale = 0x30000 - 1;
> + if (*scaler_id == 0)
> + max_vscale = 0x30000 - 1;
> + else
> + max_vscale = 0x10000;
> +
> + } else if (DISPLAY_VER(dev_priv) >= 10 ||
> + !intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) {
> + max_hscale = 0x30000 - 1;
> + max_vscale = 0x30000 - 1;
> + } else {
> + max_hscale = 0x20000 - 1;
> + max_vscale = 0x20000 - 1;
> + }
> +
> + /*
> + * FIXME: We should change the if-else block above to
> + * support HQ vs dynamic scaler properly.
> + */
> +
> + /* Check if required scaling is within limits */
> + hscale = drm_rect_calc_hscale(src, dst, 1, max_hscale);
> + vscale = drm_rect_calc_vscale(src, dst, 1, max_vscale);
> +
> + if (hscale < 0 || vscale < 0) {
> + drm_dbg_kms(&dev_priv->drm,
> + "Scaler %d doesn't support required plane scaling\n",
> + *scaler_id);
> + drm_rect_debug_print("src: ", src, true);
> + drm_rect_debug_print("dst: ", dst, false);
> +
> + return -EINVAL;
> + }
> + }
> +
> + drm_dbg_kms(&dev_priv->drm, "Attached scaler id %u.%u to %s:%d\n",
> + intel_crtc->pipe, *scaler_id, name, idx);
> + scaler_state->scalers[*scaler_id].mode = mode;
> +
> + return 0;
> +}
> +
> +/**
> + * intel_atomic_setup_scalers() - setup scalers for crtc per staged requests
> + * @dev_priv: i915 device
> + * @intel_crtc: intel crtc
> + * @crtc_state: incoming crtc_state to validate and setup scalers
> + *
> + * This function sets up scalers based on staged scaling requests for
> + * a @crtc and its planes. It is called from crtc level check path. If request
> + * is a supportable request, it attaches scalers to requested planes and crtc.
> + *
> + * This function takes into account the current scaler(s) in use by any planes
> + * not being part of this atomic state
> + *
> + * Returns:
> + * 0 - scalers were setup successfully
> + * error code - otherwise
> + */
> +int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
> + struct intel_crtc *intel_crtc,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_plane *plane = NULL;
> + struct intel_plane *intel_plane;
> + struct intel_plane_state *plane_state = NULL;
> + struct intel_crtc_scaler_state *scaler_state =
> + &crtc_state->scaler_state;
> + struct drm_atomic_state *drm_state = crtc_state->uapi.state;
> + struct intel_atomic_state *intel_state = to_intel_atomic_state(drm_state);
> + int num_scalers_need;
> + int i;
> +
> + num_scalers_need = hweight32(scaler_state->scaler_users);
> +
> + /*
> + * High level flow:
> + * - staged scaler requests are already in scaler_state->scaler_users
> + * - check whether staged scaling requests can be supported
> + * - add planes using scalers that aren't in current transaction
> + * - assign scalers to requested users
> + * - as part of plane commit, scalers will be committed
> + * (i.e., either attached or detached) to respective planes in hw
> + * - as part of crtc_commit, scaler will be either attached or detached
> + * to crtc in hw
> + */
> +
> + /* fail if required scalers > available scalers */
> + if (num_scalers_need > intel_crtc->num_scalers) {
> + drm_dbg_kms(&dev_priv->drm,
> + "Too many scaling requests %d > %d\n",
> + num_scalers_need, intel_crtc->num_scalers);
> + return -EINVAL;
> + }
> +
> + /* walkthrough scaler_users bits and start assigning scalers */
> + for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) {
> + int *scaler_id;
> + const char *name;
> + int idx, ret;
> +
> + /* skip if scaler not required */
> + if (!(scaler_state->scaler_users & (1 << i)))
> + continue;
> +
> + if (i == SKL_CRTC_INDEX) {
> + name = "CRTC";
> + idx = intel_crtc->base.base.id;
> +
> + /* panel fitter case: assign as a crtc scaler */
> + scaler_id = &scaler_state->scaler_id;
> + } else {
> + name = "PLANE";
> +
> + /* plane scaler case: assign as a plane scaler */
> + /* find the plane that set the bit as scaler_user */
> + plane = drm_state->planes[i].ptr;
> +
> + /*
> + * to enable/disable hq mode, add planes that are using scaler
> + * into this transaction
> + */
> + if (!plane) {
> + struct drm_plane_state *state;
> +
> + /*
> + * GLK+ scalers don't have a HQ mode so it
> + * isn't necessary to change between HQ and dyn mode
> + * on those platforms.
> + */
> + if (DISPLAY_VER(dev_priv) >= 10)
> + continue;
> +
> + plane = drm_plane_from_index(&dev_priv->drm, i);
> + state = drm_atomic_get_plane_state(drm_state, plane);
> + if (IS_ERR(state)) {
> + drm_dbg_kms(&dev_priv->drm,
> + "Failed to add [PLANE:%d] to drm_state\n",
> + plane->base.id);
> + return PTR_ERR(state);
> + }
> + }
> +
> + intel_plane = to_intel_plane(plane);
> + idx = plane->base.id;
> +
> + /* plane on different crtc cannot be a scaler user of this crtc */
> + if (drm_WARN_ON(&dev_priv->drm,
> + intel_plane->pipe != intel_crtc->pipe))
> + continue;
> +
> + plane_state = intel_atomic_get_new_plane_state(intel_state,
> + intel_plane);
> + scaler_id = &plane_state->scaler_id;
> + }
> +
> + ret = intel_atomic_setup_scaler(scaler_state, num_scalers_need,
> + intel_crtc, name, idx,
> + plane_state, scaler_id);
> + if (ret < 0)
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> static int glk_coef_tap(int i)
> {
> return i % 7;
> diff --git a/drivers/gpu/drm/i915/display/skl_scaler.h b/drivers/gpu/drm/i915/display/skl_scaler.h
> index 0097d5d08e10..f040f6ac061f 100644
> --- a/drivers/gpu/drm/i915/display/skl_scaler.h
> +++ b/drivers/gpu/drm/i915/display/skl_scaler.h
> @@ -8,17 +8,22 @@
> #include <linux/types.h>
>
> enum drm_scaling_filter;
> +enum pipe;
> struct drm_i915_private;
> +struct intel_crtc;
> struct intel_crtc_state;
> -struct intel_plane_state;
> struct intel_plane;
> -enum pipe;
> +struct intel_plane_state;
>
> int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
>
> int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
> struct intel_plane_state *plane_state);
>
> +int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
> + struct intel_crtc *intel_crtc,
> + struct intel_crtc_state *crtc_state);
> +
> void skl_pfit_enable(const struct intel_crtc_state *crtc_state);
>
> void skl_program_plane_scaler(struct intel_plane *plane,
> @@ -26,4 +31,5 @@ void skl_program_plane_scaler(struct intel_plane *plane,
> const struct intel_plane_state *plane_state);
> void skl_detach_scalers(const struct intel_crtc_state *crtc_state);
> void skl_scaler_disable(const struct intel_crtc_state *old_crtc_state);
> +
> #endif
--
Jani Nikula, Intel Open Source Graphics Center
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