diff options
Diffstat (limited to 'drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c')
| -rw-r--r-- | drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c | 513 |
1 files changed, 513 insertions, 0 deletions
diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c new file mode 100644 index 000000000000..45c05d0ffc70 --- /dev/null +++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c @@ -0,0 +1,513 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * R-Car Display Unit VSP-Based Compositor + * + * Copyright (C) 2015 Renesas Electronics Corporation + * + * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) + */ + +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_blend.h> +#include <drm/drm_crtc.h> +#include <drm/drm_fb_dma_helper.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_gem_atomic_helper.h> +#include <drm/drm_gem_dma_helper.h> +#include <drm/drm_managed.h> +#include <drm/drm_vblank.h> + +#include <linux/bitops.h> +#include <linux/dma-mapping.h> +#include <linux/of_platform.h> +#include <linux/scatterlist.h> +#include <linux/slab.h> +#include <linux/videodev2.h> + +#include <media/vsp1.h> + +#include "rcar_du_drv.h" +#include "rcar_du_kms.h" +#include "rcar_du_vsp.h" +#include "rcar_du_writeback.h" + +static void rcar_du_vsp_complete(void *private, unsigned int status, u32 crc) +{ + struct rcar_du_crtc *crtc = private; + + if (crtc->vblank_enable) + drm_crtc_handle_vblank(&crtc->crtc); + + if (status & VSP1_DU_STATUS_COMPLETE) + rcar_du_crtc_finish_page_flip(crtc); + if (status & VSP1_DU_STATUS_WRITEBACK) + rcar_du_writeback_complete(crtc); + + drm_crtc_add_crc_entry(&crtc->crtc, false, 0, &crc); +} + +void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) +{ + const struct drm_display_mode *mode = &crtc->crtc.state->adjusted_mode; + struct rcar_du_device *rcdu = crtc->dev; + struct vsp1_du_lif_config cfg = { + .width = mode->hdisplay, + .height = mode->vdisplay, + .interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE, + .callback = rcar_du_vsp_complete, + .callback_data = crtc, + }; + struct rcar_du_plane_state state = { + .state = { + .alpha = DRM_BLEND_ALPHA_OPAQUE, + .crtc = &crtc->crtc, + .dst.x1 = 0, + .dst.y1 = 0, + .dst.x2 = mode->hdisplay, + .dst.y2 = mode->vdisplay, + .src.x1 = 0, + .src.y1 = 0, + .src.x2 = mode->hdisplay << 16, + .src.y2 = mode->vdisplay << 16, + .zpos = 0, + }, + .format = rcar_du_format_info(DRM_FORMAT_XRGB8888), + .source = RCAR_DU_PLANE_VSPD1, + .colorkey = 0, + }; + + if (rcdu->info->gen >= 3) + state.hwindex = (crtc->index % 2) ? 2 : 0; + else + state.hwindex = crtc->index % 2; + + __rcar_du_plane_setup(crtc->group, &state); + + vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, &cfg); +} + +void rcar_du_vsp_disable(struct rcar_du_crtc *crtc) +{ + vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, NULL); +} + +void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc) +{ + vsp1_du_atomic_begin(crtc->vsp->vsp, crtc->vsp_pipe); +} + +void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc) +{ + struct vsp1_du_atomic_pipe_config cfg = { { 0, } }; + struct rcar_du_crtc_state *state; + + state = to_rcar_crtc_state(crtc->crtc.state); + cfg.crc = state->crc; + + rcar_du_writeback_setup(crtc, &cfg.writeback); + + vsp1_du_atomic_flush(crtc->vsp->vsp, crtc->vsp_pipe, &cfg); +} + +static const u32 rcar_du_vsp_formats[] = { + DRM_FORMAT_RGB332, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_XRGB4444, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_RGB565, + DRM_FORMAT_BGR888, + DRM_FORMAT_RGB888, + DRM_FORMAT_BGRA8888, + DRM_FORMAT_BGRX8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_UYVY, + DRM_FORMAT_YUYV, + DRM_FORMAT_YVYU, + DRM_FORMAT_NV12, + DRM_FORMAT_NV21, + DRM_FORMAT_NV16, + DRM_FORMAT_NV61, + DRM_FORMAT_YUV420, + DRM_FORMAT_YVU420, + DRM_FORMAT_YUV422, + DRM_FORMAT_YVU422, + DRM_FORMAT_YUV444, + DRM_FORMAT_YVU444, +}; + +/* + * Gen4 supports the same formats as above, and additionally 2-10-10-10 RGB + * formats and Y210 & Y212 formats. + */ +static const u32 rcar_du_vsp_formats_gen4[] = { + DRM_FORMAT_RGB332, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_XRGB4444, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_RGB565, + DRM_FORMAT_BGR888, + DRM_FORMAT_RGB888, + DRM_FORMAT_BGRA8888, + DRM_FORMAT_BGRX8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_RGBX1010102, + DRM_FORMAT_RGBA1010102, + DRM_FORMAT_ARGB2101010, + DRM_FORMAT_UYVY, + DRM_FORMAT_YUYV, + DRM_FORMAT_YVYU, + DRM_FORMAT_NV12, + DRM_FORMAT_NV21, + DRM_FORMAT_NV16, + DRM_FORMAT_NV61, + DRM_FORMAT_YUV420, + DRM_FORMAT_YVU420, + DRM_FORMAT_YUV422, + DRM_FORMAT_YVU422, + DRM_FORMAT_YUV444, + DRM_FORMAT_YVU444, + DRM_FORMAT_Y210, + DRM_FORMAT_Y212, +}; + +static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane) +{ + struct rcar_du_vsp_plane_state *state = + to_rcar_vsp_plane_state(plane->plane.state); + struct rcar_du_crtc *crtc = to_rcar_crtc(state->state.crtc); + struct drm_framebuffer *fb = plane->plane.state->fb; + const struct rcar_du_format_info *format; + struct vsp1_du_atomic_config cfg = { + .pixelformat = 0, + .pitch = fb->pitches[0], + .alpha = state->state.alpha >> 8, + .zpos = state->state.zpos, + }; + u32 fourcc = state->format->fourcc; + unsigned int i; + + cfg.src.left = state->state.src.x1 >> 16; + cfg.src.top = state->state.src.y1 >> 16; + cfg.src.width = drm_rect_width(&state->state.src) >> 16; + cfg.src.height = drm_rect_height(&state->state.src) >> 16; + + cfg.dst.left = state->state.dst.x1; + cfg.dst.top = state->state.dst.y1; + cfg.dst.width = drm_rect_width(&state->state.dst); + cfg.dst.height = drm_rect_height(&state->state.dst); + + for (i = 0; i < state->format->planes; ++i) + cfg.mem[i] = sg_dma_address(state->sg_tables[i].sgl) + + fb->offsets[i]; + + if (state->state.pixel_blend_mode == DRM_MODE_BLEND_PIXEL_NONE) { + switch (fourcc) { + case DRM_FORMAT_ARGB1555: + fourcc = DRM_FORMAT_XRGB1555; + break; + + case DRM_FORMAT_ARGB4444: + fourcc = DRM_FORMAT_XRGB4444; + break; + + case DRM_FORMAT_ARGB8888: + fourcc = DRM_FORMAT_XRGB8888; + break; + } + } + + format = rcar_du_format_info(fourcc); + cfg.pixelformat = format->v4l2; + + cfg.premult = state->state.pixel_blend_mode == DRM_MODE_BLEND_PREMULTI; + + vsp1_du_atomic_update(plane->vsp->vsp, crtc->vsp_pipe, + plane->index, &cfg); +} + +int rcar_du_vsp_map_fb(struct rcar_du_vsp *vsp, struct drm_framebuffer *fb, + struct sg_table sg_tables[3]) +{ + struct rcar_du_device *rcdu = vsp->dev; + unsigned int i, j; + int ret; + + for (i = 0; i < fb->format->num_planes; ++i) { + struct drm_gem_dma_object *gem = drm_fb_dma_get_gem_obj(fb, i); + struct sg_table *sgt = &sg_tables[i]; + + if (gem->sgt) { + struct scatterlist *src; + struct scatterlist *dst; + + /* + * If the GEM buffer has a scatter gather table, it has + * been imported from a dma-buf and has no physical + * address as it might not be physically contiguous. + * Copy the original scatter gather table to map it to + * the VSP. + */ + ret = sg_alloc_table(sgt, gem->sgt->orig_nents, + GFP_KERNEL); + if (ret) + goto fail; + + src = gem->sgt->sgl; + dst = sgt->sgl; + for (j = 0; j < gem->sgt->orig_nents; ++j) { + sg_set_page(dst, sg_page(src), src->length, + src->offset); + src = sg_next(src); + dst = sg_next(dst); + } + } else { + ret = dma_get_sgtable(rcdu->dev, sgt, gem->vaddr, + gem->dma_addr, gem->base.size); + if (ret) + goto fail; + } + + ret = vsp1_du_map_sg(vsp->vsp, sgt); + if (ret) { + sg_free_table(sgt); + goto fail; + } + } + + return 0; + +fail: + while (i--) { + struct sg_table *sgt = &sg_tables[i]; + + vsp1_du_unmap_sg(vsp->vsp, sgt); + sg_free_table(sgt); + } + + return ret; +} + +static int rcar_du_vsp_plane_prepare_fb(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state); + struct rcar_du_vsp *vsp = to_rcar_vsp_plane(plane)->vsp; + int ret; + + /* + * There's no need to prepare (and unprepare) the framebuffer when the + * plane is not visible, as it will not be displayed. + */ + if (!state->visible) + return 0; + + ret = rcar_du_vsp_map_fb(vsp, state->fb, rstate->sg_tables); + if (ret < 0) + return ret; + + return drm_gem_plane_helper_prepare_fb(plane, state); +} + +void rcar_du_vsp_unmap_fb(struct rcar_du_vsp *vsp, struct drm_framebuffer *fb, + struct sg_table sg_tables[3]) +{ + unsigned int i; + + for (i = 0; i < fb->format->num_planes; ++i) { + struct sg_table *sgt = &sg_tables[i]; + + vsp1_du_unmap_sg(vsp->vsp, sgt); + sg_free_table(sgt); + } +} + +static void rcar_du_vsp_plane_cleanup_fb(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state); + struct rcar_du_vsp *vsp = to_rcar_vsp_plane(plane)->vsp; + + if (!state->visible) + return; + + rcar_du_vsp_unmap_fb(vsp, state->fb, rstate->sg_tables); +} + +static int rcar_du_vsp_plane_atomic_check(struct drm_plane *plane, + struct drm_atomic_state *state) +{ + struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, + plane); + struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(new_plane_state); + + return __rcar_du_plane_atomic_check(plane, new_plane_state, + &rstate->format); +} + +static void rcar_du_vsp_plane_atomic_update(struct drm_plane *plane, + struct drm_atomic_state *state) +{ + struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane); + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); + struct rcar_du_vsp_plane *rplane = to_rcar_vsp_plane(plane); + struct rcar_du_crtc *crtc = to_rcar_crtc(old_state->crtc); + + if (new_state->visible) + rcar_du_vsp_plane_setup(rplane); + else if (old_state->crtc) + vsp1_du_atomic_update(rplane->vsp->vsp, crtc->vsp_pipe, + rplane->index, NULL); +} + +static const struct drm_plane_helper_funcs rcar_du_vsp_plane_helper_funcs = { + .prepare_fb = rcar_du_vsp_plane_prepare_fb, + .cleanup_fb = rcar_du_vsp_plane_cleanup_fb, + .atomic_check = rcar_du_vsp_plane_atomic_check, + .atomic_update = rcar_du_vsp_plane_atomic_update, +}; + +static struct drm_plane_state * +rcar_du_vsp_plane_atomic_duplicate_state(struct drm_plane *plane) +{ + struct rcar_du_vsp_plane_state *copy; + + if (WARN_ON(!plane->state)) + return NULL; + + copy = kzalloc(sizeof(*copy), GFP_KERNEL); + if (copy == NULL) + return NULL; + + __drm_atomic_helper_plane_duplicate_state(plane, ©->state); + + return ©->state; +} + +static void rcar_du_vsp_plane_atomic_destroy_state(struct drm_plane *plane, + struct drm_plane_state *state) +{ + __drm_atomic_helper_plane_destroy_state(state); + kfree(to_rcar_vsp_plane_state(state)); +} + +static void rcar_du_vsp_plane_reset(struct drm_plane *plane) +{ + struct rcar_du_vsp_plane_state *state; + + if (plane->state) { + rcar_du_vsp_plane_atomic_destroy_state(plane, plane->state); + plane->state = NULL; + } + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (state == NULL) + return; + + __drm_atomic_helper_plane_reset(plane, &state->state); +} + +static const struct drm_plane_funcs rcar_du_vsp_plane_funcs = { + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, + .reset = rcar_du_vsp_plane_reset, + .destroy = drm_plane_cleanup, + .atomic_duplicate_state = rcar_du_vsp_plane_atomic_duplicate_state, + .atomic_destroy_state = rcar_du_vsp_plane_atomic_destroy_state, +}; + +static void rcar_du_vsp_cleanup(struct drm_device *dev, void *res) +{ + struct rcar_du_vsp *vsp = res; + unsigned int i; + + for (i = 0; i < vsp->num_planes; ++i) { + struct rcar_du_vsp_plane *plane = &vsp->planes[i]; + + drm_plane_cleanup(&plane->plane); + } + + kfree(vsp->planes); + + put_device(vsp->vsp); +} + +int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np, + unsigned int crtcs) +{ + struct rcar_du_device *rcdu = vsp->dev; + struct platform_device *pdev; + unsigned int num_crtcs = hweight32(crtcs); + unsigned int num_planes; + unsigned int i; + int ret; + + /* Find the VSP device and initialize it. */ + pdev = of_find_device_by_node(np); + if (!pdev) + return -ENXIO; + + vsp->vsp = &pdev->dev; + + ret = drmm_add_action_or_reset(&rcdu->ddev, rcar_du_vsp_cleanup, vsp); + if (ret < 0) + return ret; + + ret = vsp1_du_init(vsp->vsp); + if (ret < 0) + return ret; + + num_planes = rcdu->info->num_rpf; + + vsp->planes = kcalloc(num_planes, sizeof(*vsp->planes), GFP_KERNEL); + if (!vsp->planes) + return -ENOMEM; + + for (i = 0; i < num_planes; ++i) { + enum drm_plane_type type = i < num_crtcs + ? DRM_PLANE_TYPE_PRIMARY + : DRM_PLANE_TYPE_OVERLAY; + struct rcar_du_vsp_plane *plane = &vsp->planes[i]; + unsigned int num_formats; + const u32 *formats; + + if (rcdu->info->gen < 4) { + num_formats = ARRAY_SIZE(rcar_du_vsp_formats); + formats = rcar_du_vsp_formats; + } else { + num_formats = ARRAY_SIZE(rcar_du_vsp_formats_gen4); + formats = rcar_du_vsp_formats_gen4; + } + + plane->vsp = vsp; + plane->index = i; + + ret = drm_universal_plane_init(&rcdu->ddev, &plane->plane, + crtcs, &rcar_du_vsp_plane_funcs, + formats, num_formats, + NULL, type, NULL); + if (ret < 0) + return ret; + + drm_plane_helper_add(&plane->plane, + &rcar_du_vsp_plane_helper_funcs); + + drm_plane_create_alpha_property(&plane->plane); + drm_plane_create_zpos_property(&plane->plane, i, 0, + num_planes - 1); + + drm_plane_create_blend_mode_property(&plane->plane, + BIT(DRM_MODE_BLEND_PIXEL_NONE) | + BIT(DRM_MODE_BLEND_PREMULTI) | + BIT(DRM_MODE_BLEND_COVERAGE)); + + vsp->num_planes++; + } + + return 0; +} |