/* * Copyright (C) 2014 Free Electrons * Copyright (C) 2014 Atmel * * Author: Boris BREZILLON * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see . */ #include "atmel_hlcdc_dc.h" #define SUBPIXEL_MASK 0xffff static uint32_t rgb_formats[] = { DRM_FORMAT_XRGB4444, DRM_FORMAT_ARGB4444, DRM_FORMAT_RGBA4444, DRM_FORMAT_ARGB1555, DRM_FORMAT_RGB565, DRM_FORMAT_RGB888, DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_RGBA8888, }; struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats = { .formats = rgb_formats, .nformats = ARRAY_SIZE(rgb_formats), }; static uint32_t rgb_and_yuv_formats[] = { DRM_FORMAT_XRGB4444, DRM_FORMAT_ARGB4444, DRM_FORMAT_RGBA4444, DRM_FORMAT_ARGB1555, DRM_FORMAT_RGB565, DRM_FORMAT_RGB888, DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_RGBA8888, DRM_FORMAT_AYUV, DRM_FORMAT_YUYV, DRM_FORMAT_UYVY, DRM_FORMAT_YVYU, DRM_FORMAT_VYUY, DRM_FORMAT_NV21, DRM_FORMAT_NV61, DRM_FORMAT_YUV422, DRM_FORMAT_YUV420, }; struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats = { .formats = rgb_and_yuv_formats, .nformats = ARRAY_SIZE(rgb_and_yuv_formats), }; static int atmel_hlcdc_format_to_plane_mode(u32 format, u32 *mode) { switch (format) { case DRM_FORMAT_XRGB4444: *mode = ATMEL_HLCDC_XRGB4444_MODE; break; case DRM_FORMAT_ARGB4444: *mode = ATMEL_HLCDC_ARGB4444_MODE; break; case DRM_FORMAT_RGBA4444: *mode = ATMEL_HLCDC_RGBA4444_MODE; break; case DRM_FORMAT_RGB565: *mode = ATMEL_HLCDC_RGB565_MODE; break; case DRM_FORMAT_RGB888: *mode = ATMEL_HLCDC_RGB888_MODE; break; case DRM_FORMAT_ARGB1555: *mode = ATMEL_HLCDC_ARGB1555_MODE; break; case DRM_FORMAT_XRGB8888: *mode = ATMEL_HLCDC_XRGB8888_MODE; break; case DRM_FORMAT_ARGB8888: *mode = ATMEL_HLCDC_ARGB8888_MODE; break; case DRM_FORMAT_RGBA8888: *mode = ATMEL_HLCDC_RGBA8888_MODE; break; case DRM_FORMAT_AYUV: *mode = ATMEL_HLCDC_AYUV_MODE; break; case DRM_FORMAT_YUYV: *mode = ATMEL_HLCDC_YUYV_MODE; break; case DRM_FORMAT_UYVY: *mode = ATMEL_HLCDC_UYVY_MODE; break; case DRM_FORMAT_YVYU: *mode = ATMEL_HLCDC_YVYU_MODE; break; case DRM_FORMAT_VYUY: *mode = ATMEL_HLCDC_VYUY_MODE; break; case DRM_FORMAT_NV21: *mode = ATMEL_HLCDC_NV21_MODE; break; case DRM_FORMAT_NV61: *mode = ATMEL_HLCDC_NV61_MODE; break; case DRM_FORMAT_YUV420: *mode = ATMEL_HLCDC_YUV420_MODE; break; case DRM_FORMAT_YUV422: *mode = ATMEL_HLCDC_YUV422_MODE; break; default: return -ENOTSUPP; } return 0; } static bool atmel_hlcdc_format_embedds_alpha(u32 format) { int i; for (i = 0; i < sizeof(format); i++) { char tmp = (format >> (8 * i)) & 0xff; if (tmp == 'A') return true; } return false; } static u32 heo_downscaling_xcoef[] = { 0x11343311, 0x000000f7, 0x1635300c, 0x000000f9, 0x1b362c08, 0x000000fb, 0x1f372804, 0x000000fe, 0x24382400, 0x00000000, 0x28371ffe, 0x00000004, 0x2c361bfb, 0x00000008, 0x303516f9, 0x0000000c, }; static u32 heo_downscaling_ycoef[] = { 0x00123737, 0x00173732, 0x001b382d, 0x001f3928, 0x00243824, 0x0028391f, 0x002d381b, 0x00323717, }; static u32 heo_upscaling_xcoef[] = { 0xf74949f7, 0x00000000, 0xf55f33fb, 0x000000fe, 0xf5701efe, 0x000000ff, 0xf87c0dff, 0x00000000, 0x00800000, 0x00000000, 0x0d7cf800, 0x000000ff, 0x1e70f5ff, 0x000000fe, 0x335ff5fe, 0x000000fb, }; static u32 heo_upscaling_ycoef[] = { 0x00004040, 0x00075920, 0x00056f0c, 0x00027b03, 0x00008000, 0x00037b02, 0x000c6f05, 0x00205907, }; static void atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_update_req *req) { const struct atmel_hlcdc_layer_cfg_layout *layout = &plane->layer.desc->layout; if (layout->size) atmel_hlcdc_layer_update_cfg(&plane->layer, layout->size, 0xffffffff, (req->crtc_w - 1) | ((req->crtc_h - 1) << 16)); if (layout->memsize) atmel_hlcdc_layer_update_cfg(&plane->layer, layout->memsize, 0xffffffff, (req->src_w - 1) | ((req->src_h - 1) << 16)); if (layout->pos) atmel_hlcdc_layer_update_cfg(&plane->layer, layout->pos, 0xffffffff, req->crtc_x | (req->crtc_y << 16)); /* TODO: rework the rescaling part */ if (req->crtc_w != req->src_w || req->crtc_h != req->src_h) { u32 factor_reg = 0; if (req->crtc_w != req->src_w) { int i; u32 factor; u32 *coeff_tab = heo_upscaling_xcoef; u32 max_memsize; if (req->crtc_w < req->src_w) coeff_tab = heo_downscaling_xcoef; for (i = 0; i < ARRAY_SIZE(heo_upscaling_xcoef); i++) atmel_hlcdc_layer_update_cfg(&plane->layer, 17 + i, 0xffffffff, coeff_tab[i]); factor = ((8 * 256 * req->src_w) - (256 * 4)) / req->crtc_w; factor++; max_memsize = ((factor * req->crtc_w) + (256 * 4)) / 2048; if (max_memsize > req->src_w) factor--; factor_reg |= factor | 0x80000000; } if (req->crtc_h != req->src_h) { int i; u32 factor; u32 *coeff_tab = heo_upscaling_ycoef; u32 max_memsize; if (req->crtc_w < req->src_w) coeff_tab = heo_downscaling_ycoef; for (i = 0; i < ARRAY_SIZE(heo_upscaling_ycoef); i++) atmel_hlcdc_layer_update_cfg(&plane->layer, 33 + i, 0xffffffff, coeff_tab[i]); factor = ((8 * 256 * req->src_w) - (256 * 4)) / req->crtc_w; factor++; max_memsize = ((factor * req->crtc_w) + (256 * 4)) / 2048; if (max_memsize > req->src_w) factor--; factor_reg |= (factor << 16) | 0x80000000; } atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff, factor_reg); } } static void atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_update_req *req) { const struct atmel_hlcdc_layer_cfg_layout *layout = &plane->layer.desc->layout; unsigned int cfg = ATMEL_HLCDC_LAYER_DMA; if (plane->base.type != DRM_PLANE_TYPE_PRIMARY) { cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL | ATMEL_HLCDC_LAYER_ITER; if (atmel_hlcdc_format_embedds_alpha(req->fb->pixel_format)) cfg |= ATMEL_HLCDC_LAYER_LAEN; else cfg |= ATMEL_HLCDC_LAYER_GAEN; } atmel_hlcdc_layer_update_cfg(&plane->layer, ATMEL_HLCDC_LAYER_DMA_CFG_ID, ATMEL_HLCDC_LAYER_DMA_BLEN_MASK, ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16); atmel_hlcdc_layer_update_cfg(&plane->layer, layout->general_config, ATMEL_HLCDC_LAYER_ITER2BL | ATMEL_HLCDC_LAYER_ITER | ATMEL_HLCDC_LAYER_GAEN | ATMEL_HLCDC_LAYER_LAEN | ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_DMA, cfg); } static void atmel_hlcdc_plane_update_format(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_update_req *req) { u32 cfg; int ret; ret = atmel_hlcdc_format_to_plane_mode(req->fb->pixel_format, &cfg); if (ret) return; if ((req->fb->pixel_format == DRM_FORMAT_YUV422 || req->fb->pixel_format == DRM_FORMAT_NV61) && (plane->rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270)))) cfg |= ATMEL_HLCDC_YUV422ROT; atmel_hlcdc_layer_update_cfg(&plane->layer, ATMEL_HLCDC_LAYER_FORMAT_CFG_ID, 0xffffffff, cfg); /* * Rotation optimization is not working on RGB888 (rotation is still * working but without any optimization). */ if (req->fb->pixel_format == DRM_FORMAT_RGB888) cfg = ATMEL_HLCDC_LAYER_DMA_ROTDIS; else cfg = 0; atmel_hlcdc_layer_update_cfg(&plane->layer, ATMEL_HLCDC_LAYER_DMA_CFG_ID, ATMEL_HLCDC_LAYER_DMA_ROTDIS, cfg); } static void atmel_hlcdc_plane_update_buffers(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_update_req *req) { struct atmel_hlcdc_layer *layer = &plane->layer; const struct atmel_hlcdc_layer_cfg_layout *layout = &layer->desc->layout; int i; atmel_hlcdc_layer_update_set_fb(&plane->layer, req->fb, req->offsets); for (i = 0; i < req->nplanes; i++) { if (layout->xstride[i]) { atmel_hlcdc_layer_update_cfg(&plane->layer, layout->xstride[i], 0xffffffff, req->xstride[i]); } if (layout->pstride[i]) { atmel_hlcdc_layer_update_cfg(&plane->layer, layout->pstride[i], 0xffffffff, req->pstride[i]); } } } static int atmel_hlcdc_plane_check_update_req(struct drm_plane *p, struct atmel_hlcdc_plane_update_req *req, const struct drm_display_mode *mode) { struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); const struct atmel_hlcdc_layer_cfg_layout *layout = &plane->layer.desc->layout; if (!layout->size && (mode->hdisplay != req->crtc_w || mode->vdisplay != req->crtc_h)) return -EINVAL; if (plane->layer.desc->max_height && req->crtc_h > plane->layer.desc->max_height) return -EINVAL; if (plane->layer.desc->max_width && req->crtc_w > plane->layer.desc->max_width) return -EINVAL; if ((req->crtc_h != req->src_h || req->crtc_w != req->src_w) && (!layout->memsize || atmel_hlcdc_format_embedds_alpha(req->fb->pixel_format))) return -EINVAL; if (req->crtc_x < 0 || req->crtc_y < 0) return -EINVAL; if (req->crtc_w + req->crtc_x > mode->hdisplay || req->crtc_h + req->crtc_y > mode->vdisplay) return -EINVAL; return 0; } int atmel_hlcdc_plane_prepare_update_req(struct drm_plane *p, struct atmel_hlcdc_plane_update_req *req, const struct drm_display_mode *mode) { struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); unsigned int patched_crtc_w; unsigned int patched_crtc_h; unsigned int patched_src_w; unsigned int patched_src_h; unsigned int tmp; int x_offset = 0; int y_offset = 0; int hsub = 1; int vsub = 1; int i; if ((req->src_x | req->src_y | req->src_w | req->src_h) & SUBPIXEL_MASK) return -EINVAL; req->src_x >>= 16; req->src_y >>= 16; req->src_w >>= 16; req->src_h >>= 16; req->nplanes = drm_format_num_planes(req->fb->pixel_format); if (req->nplanes > ATMEL_HLCDC_MAX_PLANES) return -EINVAL; /* * Swap width and size in case of 90 or 270 degrees rotation */ if (plane->rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))) { tmp = req->crtc_w; req->crtc_w = req->crtc_h; req->crtc_h = tmp; tmp = req->src_w; req->src_w = req->src_h; req->src_h = tmp; } if (req->crtc_x + req->crtc_w > mode->hdisplay) patched_crtc_w = mode->hdisplay - req->crtc_x; else patched_crtc_w = req->crtc_w; if (req->crtc_x < 0) { patched_crtc_w += req->crtc_x; x_offset = -req->crtc_x; req->crtc_x = 0; } if (req->crtc_y + req->crtc_h > mode->vdisplay) patched_crtc_h = mode->vdisplay - req->crtc_y; else patched_crtc_h = req->crtc_h; if (req->crtc_y < 0) { patched_crtc_h += req->crtc_y; y_offset = -req->crtc_y; req->crtc_y = 0; } patched_src_w = DIV_ROUND_CLOSEST(patched_crtc_w * req->src_w, req->crtc_w); patched_src_h = DIV_ROUND_CLOSEST(patched_crtc_h * req->src_h, req->crtc_h); hsub = drm_format_horz_chroma_subsampling(req->fb->pixel_format); vsub = drm_format_vert_chroma_subsampling(req->fb->pixel_format); for (i = 0; i < req->nplanes; i++) { unsigned int offset = 0; int xdiv = i ? hsub : 1; int ydiv = i ? vsub : 1; req->bpp[i] = drm_format_plane_cpp(req->fb->pixel_format, i); if (!req->bpp[i]) return -EINVAL; switch (plane->rotation & 0xf) { case BIT(DRM_ROTATE_90): offset = ((y_offset + req->src_y + patched_src_w - 1) / ydiv) * req->fb->pitches[i]; offset += ((x_offset + req->src_x) / xdiv) * req->bpp[i]; req->xstride[i] = ((patched_src_w - 1) / ydiv) * req->fb->pitches[i]; req->pstride[i] = -req->fb->pitches[i] - req->bpp[i]; break; case BIT(DRM_ROTATE_180): offset = ((y_offset + req->src_y + patched_src_h - 1) / ydiv) * req->fb->pitches[i]; offset += ((x_offset + req->src_x + patched_src_w - 1) / xdiv) * req->bpp[i]; req->xstride[i] = ((((patched_src_w - 1) / xdiv) - 1) * req->bpp[i]) - req->fb->pitches[i]; req->pstride[i] = -2 * req->bpp[i]; break; case BIT(DRM_ROTATE_270): offset = ((y_offset + req->src_y) / ydiv) * req->fb->pitches[i]; offset += ((x_offset + req->src_x + patched_src_h - 1) / xdiv) * req->bpp[i]; req->xstride[i] = -(((patched_src_w - 1) / ydiv) * req->fb->pitches[i]) - (2 * req->bpp[i]); req->pstride[i] = req->fb->pitches[i] - req->bpp[i]; break; case BIT(DRM_ROTATE_0): default: offset = ((y_offset + req->src_y) / ydiv) * req->fb->pitches[i]; offset += ((x_offset + req->src_x) / xdiv) * req->bpp[i]; req->xstride[i] = req->fb->pitches[i] - ((patched_src_w / xdiv) * req->bpp[i]); req->pstride[i] = 0; break; } req->offsets[i] = offset + req->fb->offsets[i]; } req->src_w = patched_src_w; req->src_h = patched_src_h; req->crtc_w = patched_crtc_w; req->crtc_h = patched_crtc_h; return atmel_hlcdc_plane_check_update_req(p, req, mode); } int atmel_hlcdc_plane_apply_update_req(struct drm_plane *p, struct atmel_hlcdc_plane_update_req *req) { struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); int ret; ret = atmel_hlcdc_layer_update_start(&plane->layer); if (ret) return ret; atmel_hlcdc_plane_update_pos_and_size(plane, req); atmel_hlcdc_plane_update_general_settings(plane, req); atmel_hlcdc_plane_update_format(plane, req); atmel_hlcdc_plane_update_buffers(plane, req); atmel_hlcdc_layer_update_commit(&plane->layer); return 0; } int atmel_hlcdc_plane_update_with_mode(struct drm_plane *p, struct drm_crtc *crtc, struct drm_framebuffer *fb, int crtc_x, int crtc_y, unsigned int crtc_w, unsigned int crtc_h, uint32_t src_x, uint32_t src_y, uint32_t src_w, uint32_t src_h, const struct drm_display_mode *mode) { struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); struct atmel_hlcdc_plane_update_req req; int ret = 0; memset(&req, 0, sizeof(req)); req.crtc_x = crtc_x; req.crtc_y = crtc_y; req.crtc_w = crtc_w; req.crtc_h = crtc_h; req.src_x = src_x; req.src_y = src_y; req.src_w = src_w; req.src_h = src_h; req.fb = fb; ret = atmel_hlcdc_plane_prepare_update_req(&plane->base, &req, mode); if (ret) return ret; if (!req.crtc_h || !req.crtc_w) return atmel_hlcdc_layer_disable(&plane->layer); return atmel_hlcdc_plane_apply_update_req(&plane->base, &req); } static int atmel_hlcdc_plane_update(struct drm_plane *p, struct drm_crtc *crtc, struct drm_framebuffer *fb, int crtc_x, int crtc_y, unsigned int crtc_w, unsigned int crtc_h, uint32_t src_x, uint32_t src_y, uint32_t src_w, uint32_t src_h) { return atmel_hlcdc_plane_update_with_mode(p, crtc, fb, crtc_x, crtc_y, crtc_w, crtc_h, src_x, src_y, src_w, src_h, &crtc->hwmode); } static int atmel_hlcdc_plane_disable(struct drm_plane *p) { struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); return atmel_hlcdc_layer_disable(&plane->layer); } static void atmel_hlcdc_plane_destroy(struct drm_plane *p) { struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); if (plane->base.fb) drm_framebuffer_unreference(plane->base.fb); atmel_hlcdc_layer_cleanup(p->dev, &plane->layer); drm_plane_cleanup(p); devm_kfree(p->dev->dev, plane); } static int atmel_hlcdc_plane_set_alpha(struct atmel_hlcdc_plane *plane, u8 alpha) { atmel_hlcdc_layer_update_start(&plane->layer); atmel_hlcdc_layer_update_cfg(&plane->layer, plane->layer.desc->layout.general_config, ATMEL_HLCDC_LAYER_GA_MASK, alpha << ATMEL_HLCDC_LAYER_GA_SHIFT); atmel_hlcdc_layer_update_commit(&plane->layer); return 0; } static int atmel_hlcdc_plane_set_rotation(struct atmel_hlcdc_plane *plane, unsigned int rotation) { plane->rotation = rotation; return 0; } static int atmel_hlcdc_plane_set_property(struct drm_plane *p, struct drm_property *property, uint64_t value) { struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); struct atmel_hlcdc_plane_properties *props = plane->properties; if (property == props->alpha) atmel_hlcdc_plane_set_alpha(plane, value); else if (property == props->rotation) atmel_hlcdc_plane_set_rotation(plane, value); else return -EINVAL; return 0; } static void atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane, const struct atmel_hlcdc_layer_desc *desc, struct atmel_hlcdc_plane_properties *props) { struct regmap *regmap = plane->layer.hlcdc->regmap; if (desc->type == ATMEL_HLCDC_OVERLAY_LAYER || desc->type == ATMEL_HLCDC_CURSOR_LAYER) { drm_object_attach_property(&plane->base.base, props->alpha, 255); /* Set default alpha value */ regmap_update_bits(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_GENERAL_CFG(&plane->layer), ATMEL_HLCDC_LAYER_GA_MASK, ATMEL_HLCDC_LAYER_GA_MASK); } if (desc->layout.xstride && desc->layout.pstride) drm_object_attach_property(&plane->base.base, props->rotation, BIT(DRM_ROTATE_0)); if (desc->layout.csc) { /* * TODO: decare a "yuv-to-rgb-conv-factors" property to let * userspace modify these factors (using a BLOB property ?). */ regmap_write(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 0), 0x4c900091); regmap_write(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 1), 0x7a5f5090); regmap_write(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 2), 0x40040890); } } static struct drm_plane_funcs layer_plane_funcs = { .update_plane = atmel_hlcdc_plane_update, .disable_plane = atmel_hlcdc_plane_disable, .set_property = atmel_hlcdc_plane_set_property, .destroy = atmel_hlcdc_plane_destroy, }; static struct atmel_hlcdc_plane * atmel_hlcdc_plane_create(struct drm_device *dev, const struct atmel_hlcdc_layer_desc *desc, struct atmel_hlcdc_plane_properties *props) { struct atmel_hlcdc_plane *plane; enum drm_plane_type type; int ret; plane = devm_kzalloc(dev->dev, sizeof(*plane), GFP_KERNEL); if (!plane) return ERR_PTR(-ENOMEM); ret = atmel_hlcdc_layer_init(dev, &plane->layer, desc); if (ret) return ERR_PTR(ret); if (desc->type == ATMEL_HLCDC_BASE_LAYER) type = DRM_PLANE_TYPE_PRIMARY; else if (desc->type == ATMEL_HLCDC_CURSOR_LAYER) type = DRM_PLANE_TYPE_CURSOR; else type = DRM_PLANE_TYPE_OVERLAY; ret = drm_universal_plane_init(dev, &plane->base, 0, &layer_plane_funcs, desc->formats->formats, desc->formats->nformats, type); if (ret) return ERR_PTR(ret); /* Set default property values*/ atmel_hlcdc_plane_init_properties(plane, desc, props); return plane; } static struct atmel_hlcdc_plane_properties * atmel_hlcdc_plane_create_properties(struct drm_device *dev) { struct atmel_hlcdc_plane_properties *props; props = devm_kzalloc(dev->dev, sizeof(*props), GFP_KERNEL); if (!props) return ERR_PTR(-ENOMEM); props->alpha = drm_property_create_range(dev, 0, "alpha", 0, 255); if (!props->alpha) return ERR_PTR(-ENOMEM); props->rotation = drm_mode_create_rotation_property(dev, BIT(DRM_ROTATE_0) | BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) | BIT(DRM_ROTATE_270)); if (!props->rotation) return ERR_PTR(-ENOMEM); return props; } struct atmel_hlcdc_planes * atmel_hlcdc_create_planes(struct drm_device *dev) { struct atmel_hlcdc_dc *dc = dev->dev_private; struct atmel_hlcdc_plane_properties *props; struct atmel_hlcdc_planes *planes; const struct atmel_hlcdc_layer_desc *descs = dc->desc->layers; int nlayers = dc->desc->nlayers; int i; planes = devm_kzalloc(dev->dev, sizeof(*planes), GFP_KERNEL); if (!planes) return ERR_PTR(-ENOMEM); for (i = 0; i < nlayers; i++) { if (descs[i].type == ATMEL_HLCDC_OVERLAY_LAYER) planes->noverlays++; } if (planes->noverlays) { planes->overlays = devm_kzalloc(dev->dev, planes->noverlays * sizeof(*planes->overlays), GFP_KERNEL); if (!planes->overlays) return ERR_PTR(-ENOMEM); } props = atmel_hlcdc_plane_create_properties(dev); if (IS_ERR(props)) return ERR_CAST(props); planes->noverlays = 0; for (i = 0; i < nlayers; i++) { struct atmel_hlcdc_plane *plane; if (descs[i].type == ATMEL_HLCDC_PP_LAYER) continue; plane = atmel_hlcdc_plane_create(dev, &descs[i], props); if (IS_ERR(plane)) return ERR_CAST(plane); plane->properties = props; switch (descs[i].type) { case ATMEL_HLCDC_BASE_LAYER: if (planes->primary) return ERR_PTR(-EINVAL); planes->primary = plane; break; case ATMEL_HLCDC_OVERLAY_LAYER: planes->overlays[planes->noverlays++] = plane; break; case ATMEL_HLCDC_CURSOR_LAYER: if (planes->cursor) return ERR_PTR(-EINVAL); planes->cursor = plane; break; default: break; } } return planes; }