diff options
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_plane.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_plane.c | 114 |
1 files changed, 66 insertions, 48 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c index 5a7967498628..61833cc1c699 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c @@ -50,23 +50,21 @@ * automatically when the core swaps the old and new states. */ -static bool rcar_du_plane_needs_realloc(struct rcar_du_plane *plane, - struct rcar_du_plane_state *new_state) +static bool rcar_du_plane_needs_realloc( + const struct rcar_du_plane_state *old_state, + const struct rcar_du_plane_state *new_state) { - struct rcar_du_plane_state *cur_state; - - cur_state = to_rcar_plane_state(plane->plane.state); - - /* Lowering the number of planes doesn't strictly require reallocation + /* + * Lowering the number of planes doesn't strictly require reallocation * as the extra hardware plane will be freed when committing, but doing * so could lead to more fragmentation. */ - if (!cur_state->format || - cur_state->format->planes != new_state->format->planes) + if (!old_state->format || + old_state->format->planes != new_state->format->planes) return true; /* Reallocate hardware planes if the source has changed. */ - if (cur_state->source != new_state->source) + if (old_state->source != new_state->source) return true; return false; @@ -141,37 +139,43 @@ int rcar_du_atomic_check_planes(struct drm_device *dev, unsigned int groups = 0; unsigned int i; struct drm_plane *drm_plane; - struct drm_plane_state *drm_plane_state; + struct drm_plane_state *old_drm_plane_state; + struct drm_plane_state *new_drm_plane_state; /* Check if hardware planes need to be reallocated. */ - for_each_plane_in_state(state, drm_plane, drm_plane_state, i) { - struct rcar_du_plane_state *plane_state; + for_each_oldnew_plane_in_state(state, drm_plane, old_drm_plane_state, + new_drm_plane_state, i) { + struct rcar_du_plane_state *old_plane_state; + struct rcar_du_plane_state *new_plane_state; struct rcar_du_plane *plane; unsigned int index; plane = to_rcar_plane(drm_plane); - plane_state = to_rcar_plane_state(drm_plane_state); + old_plane_state = to_rcar_plane_state(old_drm_plane_state); + new_plane_state = to_rcar_plane_state(new_drm_plane_state); dev_dbg(rcdu->dev, "%s: checking plane (%u,%tu)\n", __func__, plane->group->index, plane - plane->group->planes); - /* If the plane is being disabled we don't need to go through + /* + * If the plane is being disabled we don't need to go through * the full reallocation procedure. Just mark the hardware * plane(s) as freed. */ - if (!plane_state->format) { + if (!new_plane_state->format) { dev_dbg(rcdu->dev, "%s: plane is being disabled\n", __func__); index = plane - plane->group->planes; group_freed_planes[plane->group->index] |= 1 << index; - plane_state->hwindex = -1; + new_plane_state->hwindex = -1; continue; } - /* If the plane needs to be reallocated mark it as such, and + /* + * If the plane needs to be reallocated mark it as such, and * mark the hardware plane(s) as free. */ - if (rcar_du_plane_needs_realloc(plane, plane_state)) { + if (rcar_du_plane_needs_realloc(old_plane_state, new_plane_state)) { dev_dbg(rcdu->dev, "%s: plane needs reallocation\n", __func__); groups |= 1 << plane->group->index; @@ -179,14 +183,15 @@ int rcar_du_atomic_check_planes(struct drm_device *dev, index = plane - plane->group->planes; group_freed_planes[plane->group->index] |= 1 << index; - plane_state->hwindex = -1; + new_plane_state->hwindex = -1; } } if (!needs_realloc) return 0; - /* Grab all plane states for the groups that need reallocation to ensure + /* + * Grab all plane states for the groups that need reallocation to ensure * locking and avoid racy updates. This serializes the update operation, * but there's not much we can do about it as that's the hardware * design. @@ -204,14 +209,15 @@ int rcar_du_atomic_check_planes(struct drm_device *dev, for (i = 0; i < group->num_planes; ++i) { struct rcar_du_plane *plane = &group->planes[i]; - struct rcar_du_plane_state *plane_state; + struct rcar_du_plane_state *new_plane_state; struct drm_plane_state *s; s = drm_atomic_get_plane_state(state, &plane->plane); if (IS_ERR(s)) return PTR_ERR(s); - /* If the plane has been freed in the above loop its + /* + * If the plane has been freed in the above loop its * hardware planes must not be added to the used planes * bitmask. However, the current state doesn't reflect * the free state yet, as we've modified the new state @@ -226,16 +232,16 @@ int rcar_du_atomic_check_planes(struct drm_device *dev, continue; } - plane_state = to_rcar_plane_state(plane->plane.state); - used_planes |= rcar_du_plane_hwmask(plane_state); + new_plane_state = to_rcar_plane_state(s); + used_planes |= rcar_du_plane_hwmask(new_plane_state); dev_dbg(rcdu->dev, "%s: plane (%u,%tu) uses %u hwplanes (index %d)\n", __func__, plane->group->index, plane - plane->group->planes, - plane_state->format ? - plane_state->format->planes : 0, - plane_state->hwindex); + new_plane_state->format ? + new_plane_state->format->planes : 0, + new_plane_state->hwindex); } group_free_planes[index] = 0xff & ~used_planes; @@ -246,40 +252,45 @@ int rcar_du_atomic_check_planes(struct drm_device *dev, } /* Reallocate hardware planes for each plane that needs it. */ - for_each_plane_in_state(state, drm_plane, drm_plane_state, i) { - struct rcar_du_plane_state *plane_state; + for_each_oldnew_plane_in_state(state, drm_plane, old_drm_plane_state, + new_drm_plane_state, i) { + struct rcar_du_plane_state *old_plane_state; + struct rcar_du_plane_state *new_plane_state; struct rcar_du_plane *plane; unsigned int crtc_planes; unsigned int free; int idx; plane = to_rcar_plane(drm_plane); - plane_state = to_rcar_plane_state(drm_plane_state); + old_plane_state = to_rcar_plane_state(old_drm_plane_state); + new_plane_state = to_rcar_plane_state(new_drm_plane_state); dev_dbg(rcdu->dev, "%s: allocating plane (%u,%tu)\n", __func__, plane->group->index, plane - plane->group->planes); - /* Skip planes that are being disabled or don't need to be + /* + * Skip planes that are being disabled or don't need to be * reallocated. */ - if (!plane_state->format || - !rcar_du_plane_needs_realloc(plane, plane_state)) + if (!new_plane_state->format || + !rcar_du_plane_needs_realloc(old_plane_state, new_plane_state)) continue; - /* Try to allocate the plane from the free planes currently + /* + * Try to allocate the plane from the free planes currently * associated with the target CRTC to avoid restarting the CRTC * group and thus minimize flicker. If it fails fall back to * allocating from all free planes. */ - crtc_planes = to_rcar_crtc(plane_state->state.crtc)->index % 2 + crtc_planes = to_rcar_crtc(new_plane_state->state.crtc)->index % 2 ? plane->group->dptsr_planes : ~plane->group->dptsr_planes; free = group_free_planes[plane->group->index]; - idx = rcar_du_plane_hwalloc(plane, plane_state, + idx = rcar_du_plane_hwalloc(plane, new_plane_state, free & crtc_planes); if (idx < 0) - idx = rcar_du_plane_hwalloc(plane, plane_state, + idx = rcar_du_plane_hwalloc(plane, new_plane_state, free); if (idx < 0) { dev_dbg(rcdu->dev, "%s: no available hardware plane\n", @@ -288,12 +299,12 @@ int rcar_du_atomic_check_planes(struct drm_device *dev, } dev_dbg(rcdu->dev, "%s: allocated %u hwplanes (index %u)\n", - __func__, plane_state->format->planes, idx); + __func__, new_plane_state->format->planes, idx); - plane_state->hwindex = idx; + new_plane_state->hwindex = idx; group_free_planes[plane->group->index] &= - ~rcar_du_plane_hwmask(plane_state); + ~rcar_du_plane_hwmask(new_plane_state); dev_dbg(rcdu->dev, "%s: group %u free planes mask 0x%02x\n", __func__, plane->group->index, @@ -351,14 +362,16 @@ static void rcar_du_plane_setup_scanout(struct rcar_du_group *rgrp, dma[1] = 0; } - /* Memory pitch (expressed in pixels). Must be doubled for interlaced + /* + * Memory pitch (expressed in pixels). Must be doubled for interlaced * operation with 32bpp formats. */ rcar_du_plane_write(rgrp, index, PnMWR, (interlaced && state->format->bpp == 32) ? pitch * 2 : pitch); - /* The Y position is expressed in raster line units and must be doubled + /* + * The Y position is expressed in raster line units and must be doubled * for 32bpp formats, according to the R8A7790 datasheet. No mention of * doubling the Y position is found in the R8A7779 datasheet, but the * rule seems to apply there as well. @@ -396,7 +409,8 @@ static void rcar_du_plane_setup_mode(struct rcar_du_group *rgrp, u32 colorkey; u32 pnmr; - /* The PnALPHAR register controls alpha-blending in 16bpp formats + /* + * The PnALPHAR register controls alpha-blending in 16bpp formats * (ARGB1555 and XRGB1555). * * For ARGB, set the alpha value to 0, and enable alpha-blending when @@ -413,7 +427,8 @@ static void rcar_du_plane_setup_mode(struct rcar_du_group *rgrp, pnmr = PnMR_BM_MD | state->format->pnmr; - /* Disable color keying when requested. YUV formats have the + /* + * Disable color keying when requested. YUV formats have the * PnMR_SPIM_TP_OFF bit set in their pnmr field, disabling color keying * automatically. */ @@ -457,7 +472,8 @@ static void rcar_du_plane_setup_format_gen2(struct rcar_du_group *rgrp, u32 ddcr2 = PnDDCR2_CODE; u32 ddcr4; - /* Data format + /* + * Data format * * The data format is selected by the DDDF field in PnMR and the EDF * field in DDCR4. @@ -589,7 +605,8 @@ static void rcar_du_plane_atomic_update(struct drm_plane *plane, rcar_du_plane_setup(rplane); - /* Check whether the source has changed from memory to live source or + /* + * Check whether the source has changed from memory to live source or * from live source to memory. The source has been configured by the * VSPS bit in the PnDDCR4 register. Although the datasheet states that * the bit is updated during vertical blanking, it seems that updates @@ -725,7 +742,8 @@ int rcar_du_planes_init(struct rcar_du_group *rgrp) unsigned int i; int ret; - /* Create one primary plane per CRTC in this group and seven overlay + /* + * Create one primary plane per CRTC in this group and seven overlay * planes. */ rgrp->num_planes = rgrp->num_crtcs + 7; |