From d635711daa98be86d4c7fd01499c34f566b54ccb Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Fri, 10 Jun 2016 05:30:17 -0300 Subject: Linux-libre 4.6.2-gnu --- drivers/gpu/drm/rcar-du/rcar_du_kms.c | 313 ++++++++-------------------------- 1 file changed, 67 insertions(+), 246 deletions(-) (limited to 'drivers/gpu/drm/rcar-du/rcar_du_kms.c') diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index 43bce69d8..24725bf85 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -1,7 +1,7 @@ /* * rcar_du_kms.c -- R-Car Display Unit Mode Setting * - * Copyright (C) 2013-2014 Renesas Electronics Corporation + * Copyright (C) 2013-2015 Renesas Electronics Corporation * * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) * @@ -28,6 +28,7 @@ #include "rcar_du_kms.h" #include "rcar_du_lvdsenc.h" #include "rcar_du_regs.h" +#include "rcar_du_vsp.h" /* ----------------------------------------------------------------------------- * Format helpers @@ -89,13 +90,44 @@ static const struct rcar_du_format_info rcar_du_format_infos[] = { .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, .edf = PnDDCR4_EDF_NONE, }, { - /* In YUV 4:2:2, only NV16 is supported (NV61 isn't) */ .fourcc = DRM_FORMAT_NV16, .bpp = 16, .planes = 2, .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, .edf = PnDDCR4_EDF_NONE, }, + /* The following formats are not supported on Gen2 and thus have no + * associated .pnmr or .edf settings. + */ + { + .fourcc = DRM_FORMAT_NV61, + .bpp = 16, + .planes = 2, + }, { + .fourcc = DRM_FORMAT_YUV420, + .bpp = 12, + .planes = 3, + }, { + .fourcc = DRM_FORMAT_YVU420, + .bpp = 12, + .planes = 3, + }, { + .fourcc = DRM_FORMAT_YUV422, + .bpp = 16, + .planes = 3, + }, { + .fourcc = DRM_FORMAT_YVU422, + .bpp = 16, + .planes = 3, + }, { + .fourcc = DRM_FORMAT_YUV444, + .bpp = 24, + .planes = 3, + }, { + .fourcc = DRM_FORMAT_YVU444, + .bpp = 24, + .planes = 3, + }, }; const struct rcar_du_format_info *rcar_du_format_info(u32 fourcc) @@ -143,6 +175,7 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv, unsigned int max_pitch; unsigned int align; unsigned int bpp; + unsigned int i; format = rcar_du_format_info(mode_cmd->pixel_format); if (format == NULL) { @@ -155,7 +188,7 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv, * The pitch and alignment constraints are expressed in pixels on the * hardware side and in bytes in the DRM API. */ - bpp = format->planes == 2 ? 1 : format->bpp / 8; + bpp = format->planes == 1 ? format->bpp / 8 : 1; max_pitch = 4096 * bpp; if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B)) @@ -170,8 +203,8 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv, return ERR_PTR(-EINVAL); } - if (format->planes == 2) { - if (mode_cmd->pitches[1] != mode_cmd->pitches[0]) { + for (i = 1; i < format->planes; ++i) { + if (mode_cmd->pitches[i] != mode_cmd->pitches[0]) { dev_dbg(dev->dev, "luma and chroma pitches do not match\n"); return ERR_PTR(-EINVAL); @@ -192,252 +225,20 @@ static void rcar_du_output_poll_changed(struct drm_device *dev) * Atomic Check and Update */ -/* - * Atomic hardware plane allocator - * - * The hardware plane allocator is solely based on the atomic plane states - * without keeping any external state to avoid races between .atomic_check() - * and .atomic_commit(). - * - * The core idea is to avoid using a free planes bitmask that would need to be - * shared between check and commit handlers with a collective knowledge based on - * the allocated hardware plane(s) for each KMS plane. The allocator then loops - * over all plane states to compute the free planes bitmask, allocates hardware - * planes based on that bitmask, and stores the result back in the plane states. - * - * For this to work we need to access the current state of planes not touched by - * the atomic update. To ensure that it won't be modified, we need to lock all - * planes using drm_atomic_get_plane_state(). This effectively serializes atomic - * updates from .atomic_check() up to completion (when swapping the states if - * the check step has succeeded) or rollback (when freeing the states if the - * check step has failed). - * - * Allocation is performed in the .atomic_check() handler and applied - * 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 *state) -{ - const struct rcar_du_format_info *cur_format; - - cur_format = to_rcar_plane_state(plane->plane.state)->format; - - /* 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. - */ - return !cur_format || cur_format->planes != state->format->planes; -} - -static unsigned int rcar_du_plane_hwmask(struct rcar_du_plane_state *state) -{ - unsigned int mask; - - if (state->hwindex == -1) - return 0; - - mask = 1 << state->hwindex; - if (state->format->planes == 2) - mask |= 1 << ((state->hwindex + 1) % 8); - - return mask; -} - -static int rcar_du_plane_hwalloc(unsigned int num_planes, unsigned int free) -{ - unsigned int i; - - for (i = 0; i < RCAR_DU_NUM_HW_PLANES; ++i) { - if (!(free & (1 << i))) - continue; - - if (num_planes == 1 || free & (1 << ((i + 1) % 8))) - break; - } - - return i == RCAR_DU_NUM_HW_PLANES ? -EBUSY : i; -} - static int rcar_du_atomic_check(struct drm_device *dev, struct drm_atomic_state *state) { struct rcar_du_device *rcdu = dev->dev_private; - unsigned int group_freed_planes[RCAR_DU_MAX_GROUPS] = { 0, }; - unsigned int group_free_planes[RCAR_DU_MAX_GROUPS] = { 0, }; - bool needs_realloc = false; - unsigned int groups = 0; - unsigned int i; int ret; ret = drm_atomic_helper_check(dev, state); if (ret < 0) return ret; - /* Check if hardware planes need to be reallocated. */ - for (i = 0; i < dev->mode_config.num_total_plane; ++i) { - struct rcar_du_plane_state *plane_state; - struct rcar_du_plane *plane; - unsigned int index; - - if (!state->planes[i]) - continue; - - plane = to_rcar_plane(state->planes[i]); - plane_state = to_rcar_plane_state(state->plane_states[i]); - - dev_dbg(rcdu->dev, "%s: checking plane (%u,%u)\n", __func__, - plane->group->index, plane - plane->group->planes); - - /* 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) { - 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; - continue; - } - - /* 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)) { - dev_dbg(rcdu->dev, "%s: plane needs reallocation\n", - __func__); - groups |= 1 << plane->group->index; - needs_realloc = true; - - index = plane - plane->group->planes; - group_freed_planes[plane->group->index] |= 1 << index; - plane_state->hwindex = -1; - } - } - - if (!needs_realloc) + if (rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) return 0; - /* 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. - * - * Compute the used planes mask for each group at the same time to avoid - * looping over the planes separately later. - */ - while (groups) { - unsigned int index = ffs(groups) - 1; - struct rcar_du_group *group = &rcdu->groups[index]; - unsigned int used_planes = 0; - - dev_dbg(rcdu->dev, "%s: finding free planes for group %u\n", - __func__, index); - - for (i = 0; i < group->num_planes; ++i) { - struct rcar_du_plane *plane = &group->planes[i]; - struct rcar_du_plane_state *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 - * 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 - * above. Use the local freed planes list to check for - * that condition instead. - */ - if (group_freed_planes[index] & (1 << i)) { - dev_dbg(rcdu->dev, - "%s: plane (%u,%u) has been freed, skipping\n", - __func__, plane->group->index, - plane - plane->group->planes); - continue; - } - - plane_state = to_rcar_plane_state(plane->plane.state); - used_planes |= rcar_du_plane_hwmask(plane_state); - - dev_dbg(rcdu->dev, - "%s: plane (%u,%u) 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); - } - - group_free_planes[index] = 0xff & ~used_planes; - groups &= ~(1 << index); - - dev_dbg(rcdu->dev, "%s: group %u free planes mask 0x%02x\n", - __func__, index, group_free_planes[index]); - } - - /* Reallocate hardware planes for each plane that needs it. */ - for (i = 0; i < dev->mode_config.num_total_plane; ++i) { - struct rcar_du_plane_state *plane_state; - struct rcar_du_plane *plane; - unsigned int crtc_planes; - unsigned int free; - int idx; - - if (!state->planes[i]) - continue; - - plane = to_rcar_plane(state->planes[i]); - plane_state = to_rcar_plane_state(state->plane_states[i]); - - dev_dbg(rcdu->dev, "%s: allocating plane (%u,%u)\n", __func__, - plane->group->index, plane - plane->group->planes); - - /* 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)) - continue; - - /* 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 - ? plane->group->dptsr_planes - : ~plane->group->dptsr_planes; - free = group_free_planes[plane->group->index]; - - idx = rcar_du_plane_hwalloc(plane_state->format->planes, - free & crtc_planes); - if (idx < 0) - idx = rcar_du_plane_hwalloc(plane_state->format->planes, - free); - if (idx < 0) { - dev_dbg(rcdu->dev, "%s: no available hardware plane\n", - __func__); - return idx; - } - - dev_dbg(rcdu->dev, "%s: allocated %u hwplanes (index %u)\n", - __func__, plane_state->format->planes, idx); - - plane_state->hwindex = idx; - - group_free_planes[plane->group->index] &= - ~rcar_du_plane_hwmask(plane_state); - - dev_dbg(rcdu->dev, "%s: group %u free planes mask 0x%02x\n", - __func__, plane->group->index, - group_free_planes[plane->group->index]); - } - - return 0; + return rcar_du_atomic_check_planes(dev, state); } struct rcar_du_commit { @@ -456,7 +257,7 @@ static void rcar_du_atomic_complete(struct rcar_du_commit *commit) /* Apply the atomic update. */ drm_atomic_helper_commit_modeset_disables(dev, old_state); drm_atomic_helper_commit_modeset_enables(dev, old_state); - drm_atomic_helper_commit_planes(dev, old_state, false); + drm_atomic_helper_commit_planes(dev, old_state, true); drm_atomic_helper_wait_for_vblanks(dev, old_state); @@ -775,14 +576,34 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu) rgrp->num_crtcs = min(rcdu->num_crtcs - 2 * i, 2U); /* If we have more than one CRTCs in this group pre-associate - * planes 0-3 with CRTC 0 and planes 4-7 with CRTC 1 to minimize - * flicker occurring when the association is changed. + * the low-order planes with CRTC 0 and the high-order planes + * with CRTC 1 to minimize flicker occurring when the + * association is changed. */ - rgrp->dptsr_planes = rgrp->num_crtcs > 1 ? 0xf0 : 0; + rgrp->dptsr_planes = rgrp->num_crtcs > 1 + ? (rcdu->info->gen >= 3 ? 0x04 : 0xf0) + : 0; - ret = rcar_du_planes_init(rgrp); - if (ret < 0) - return ret; + if (!rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) { + ret = rcar_du_planes_init(rgrp); + if (ret < 0) + return ret; + } + } + + /* Initialize the compositors. */ + if (rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) { + for (i = 0; i < rcdu->num_crtcs; ++i) { + struct rcar_du_vsp *vsp = &rcdu->vsps[i]; + + vsp->index = i; + vsp->dev = rcdu; + rcdu->crtcs[i].vsp = vsp; + + ret = rcar_du_vsp_init(vsp); + if (ret < 0) + return ret; + } } /* Create the CRTCs. */ -- cgit v1.2.3-54-g00ecf