X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fatmel-hlcdc%2Fatmel_hlcdc_plane.c;fp=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fatmel-hlcdc%2Fatmel_hlcdc_plane.c;h=be9fa8220499cf786e27a7ddfb449f2e94b322f2;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git diff --git a/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c new file mode 100644 index 000000000..be9fa8220 --- /dev/null +++ b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c @@ -0,0 +1,1048 @@ +/* + * 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" + +/** + * Atmel HLCDC Plane state structure. + * + * @base: DRM plane state + * @crtc_x: x position of the plane relative to the CRTC + * @crtc_y: y position of the plane relative to the CRTC + * @crtc_w: visible width of the plane + * @crtc_h: visible height of the plane + * @src_x: x buffer position + * @src_y: y buffer position + * @src_w: buffer width + * @src_h: buffer height + * @alpha: alpha blending of the plane + * @bpp: bytes per pixel deduced from pixel_format + * @offsets: offsets to apply to the GEM buffers + * @xstride: value to add to the pixel pointer between each line + * @pstride: value to add to the pixel pointer between each pixel + * @nplanes: number of planes (deduced from pixel_format) + */ +struct atmel_hlcdc_plane_state { + struct drm_plane_state base; + 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; + + u8 alpha; + + bool disc_updated; + + int disc_x; + int disc_y; + int disc_w; + int disc_h; + + /* These fields are private and should not be touched */ + int bpp[ATMEL_HLCDC_MAX_PLANES]; + unsigned int offsets[ATMEL_HLCDC_MAX_PLANES]; + int xstride[ATMEL_HLCDC_MAX_PLANES]; + int pstride[ATMEL_HLCDC_MAX_PLANES]; + int nplanes; +}; + +static inline struct atmel_hlcdc_plane_state * +drm_plane_state_to_atmel_hlcdc_plane_state(struct drm_plane_state *s) +{ + return container_of(s, struct atmel_hlcdc_plane_state, base); +} + +#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_embeds_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_state *state) +{ + 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, + (state->crtc_w - 1) | + ((state->crtc_h - 1) << 16)); + + if (layout->memsize) + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->memsize, + 0xffffffff, + (state->src_w - 1) | + ((state->src_h - 1) << 16)); + + if (layout->pos) + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->pos, + 0xffffffff, + state->crtc_x | + (state->crtc_y << 16)); + + /* TODO: rework the rescaling part */ + if (state->crtc_w != state->src_w || state->crtc_h != state->src_h) { + u32 factor_reg = 0; + + if (state->crtc_w != state->src_w) { + int i; + u32 factor; + u32 *coeff_tab = heo_upscaling_xcoef; + u32 max_memsize; + + if (state->crtc_w < state->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 * state->src_w) - (256 * 4)) / + state->crtc_w; + factor++; + max_memsize = ((factor * state->crtc_w) + (256 * 4)) / + 2048; + if (max_memsize > state->src_w) + factor--; + factor_reg |= factor | 0x80000000; + } + + if (state->crtc_h != state->src_h) { + int i; + u32 factor; + u32 *coeff_tab = heo_upscaling_ycoef; + u32 max_memsize; + + if (state->crtc_w < state->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 * state->src_w) - (256 * 4)) / + state->crtc_w; + factor++; + max_memsize = ((factor * state->crtc_w) + (256 * 4)) / + 2048; + if (max_memsize > state->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_state *state) +{ + 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_embeds_alpha(state->base.fb->pixel_format)) + cfg |= ATMEL_HLCDC_LAYER_LAEN; + else + cfg |= ATMEL_HLCDC_LAYER_GAEN | + ATMEL_HLCDC_LAYER_GA(state->alpha); + } + + 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_GA_MASK | + 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_state *state) +{ + u32 cfg; + int ret; + + ret = atmel_hlcdc_format_to_plane_mode(state->base.fb->pixel_format, + &cfg); + if (ret) + return; + + if ((state->base.fb->pixel_format == DRM_FORMAT_YUV422 || + state->base.fb->pixel_format == DRM_FORMAT_NV61) && + (state->base.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 (state->base.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_state *state) +{ + 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, state->base.fb, + state->offsets); + + for (i = 0; i < state->nplanes; i++) { + if (layout->xstride[i]) { + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->xstride[i], + 0xffffffff, + state->xstride[i]); + } + + if (layout->pstride[i]) { + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->pstride[i], + 0xffffffff, + state->pstride[i]); + } + } +} + +int +atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state) +{ + int disc_x = 0, disc_y = 0, disc_w = 0, disc_h = 0; + const struct atmel_hlcdc_layer_cfg_layout *layout; + struct atmel_hlcdc_plane_state *primary_state; + struct drm_plane_state *primary_s; + struct atmel_hlcdc_plane *primary; + struct drm_plane *ovl; + + primary = drm_plane_to_atmel_hlcdc_plane(c_state->crtc->primary); + layout = &primary->layer.desc->layout; + if (!layout->disc_pos || !layout->disc_size) + return 0; + + primary_s = drm_atomic_get_plane_state(c_state->state, + &primary->base); + if (IS_ERR(primary_s)) + return PTR_ERR(primary_s); + + primary_state = drm_plane_state_to_atmel_hlcdc_plane_state(primary_s); + + drm_atomic_crtc_state_for_each_plane(ovl, c_state) { + struct atmel_hlcdc_plane_state *ovl_state; + struct drm_plane_state *ovl_s; + + if (ovl == c_state->crtc->primary) + continue; + + ovl_s = drm_atomic_get_plane_state(c_state->state, ovl); + if (IS_ERR(ovl_s)) + return PTR_ERR(ovl_s); + + ovl_state = drm_plane_state_to_atmel_hlcdc_plane_state(ovl_s); + + if (!ovl_s->fb || + atmel_hlcdc_format_embeds_alpha(ovl_s->fb->pixel_format) || + ovl_state->alpha != 255) + continue; + + /* TODO: implement a smarter hidden area detection */ + if (ovl_state->crtc_h * ovl_state->crtc_w < disc_h * disc_w) + continue; + + disc_x = ovl_state->crtc_x; + disc_y = ovl_state->crtc_y; + disc_h = ovl_state->crtc_h; + disc_w = ovl_state->crtc_w; + } + + if (disc_x == primary_state->disc_x && + disc_y == primary_state->disc_y && + disc_w == primary_state->disc_w && + disc_h == primary_state->disc_h) + return 0; + + + primary_state->disc_x = disc_x; + primary_state->disc_y = disc_y; + primary_state->disc_w = disc_w; + primary_state->disc_h = disc_h; + primary_state->disc_updated = true; + + return 0; +} + +static void +atmel_hlcdc_plane_update_disc_area(struct atmel_hlcdc_plane *plane, + struct atmel_hlcdc_plane_state *state) +{ + const struct atmel_hlcdc_layer_cfg_layout *layout = + &plane->layer.desc->layout; + int disc_surface = 0; + + if (!state->disc_updated) + return; + + disc_surface = state->disc_h * state->disc_w; + + atmel_hlcdc_layer_update_cfg(&plane->layer, layout->general_config, + ATMEL_HLCDC_LAYER_DISCEN, + disc_surface ? ATMEL_HLCDC_LAYER_DISCEN : 0); + + if (!disc_surface) + return; + + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->disc_pos, + 0xffffffff, + state->disc_x | (state->disc_y << 16)); + + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->disc_size, + 0xffffffff, + (state->disc_w - 1) | + ((state->disc_h - 1) << 16)); +} + +static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p, + struct drm_plane_state *s) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + struct atmel_hlcdc_plane_state *state = + drm_plane_state_to_atmel_hlcdc_plane_state(s); + const struct atmel_hlcdc_layer_cfg_layout *layout = + &plane->layer.desc->layout; + struct drm_framebuffer *fb = state->base.fb; + const struct drm_display_mode *mode; + struct drm_crtc_state *crtc_state; + 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 (!state->base.crtc || !fb) + return 0; + + crtc_state = s->state->crtc_states[drm_crtc_index(s->crtc)]; + mode = &crtc_state->adjusted_mode; + + state->src_x = s->src_x; + state->src_y = s->src_y; + state->src_h = s->src_h; + state->src_w = s->src_w; + state->crtc_x = s->crtc_x; + state->crtc_y = s->crtc_y; + state->crtc_h = s->crtc_h; + state->crtc_w = s->crtc_w; + if ((state->src_x | state->src_y | state->src_w | state->src_h) & + SUBPIXEL_MASK) + return -EINVAL; + + state->src_x >>= 16; + state->src_y >>= 16; + state->src_w >>= 16; + state->src_h >>= 16; + + state->nplanes = drm_format_num_planes(fb->pixel_format); + if (state->nplanes > ATMEL_HLCDC_MAX_PLANES) + return -EINVAL; + + /* + * Swap width and size in case of 90 or 270 degrees rotation + */ + if (state->base.rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))) { + tmp = state->crtc_w; + state->crtc_w = state->crtc_h; + state->crtc_h = tmp; + tmp = state->src_w; + state->src_w = state->src_h; + state->src_h = tmp; + } + + if (state->crtc_x + state->crtc_w > mode->hdisplay) + patched_crtc_w = mode->hdisplay - state->crtc_x; + else + patched_crtc_w = state->crtc_w; + + if (state->crtc_x < 0) { + patched_crtc_w += state->crtc_x; + x_offset = -state->crtc_x; + state->crtc_x = 0; + } + + if (state->crtc_y + state->crtc_h > mode->vdisplay) + patched_crtc_h = mode->vdisplay - state->crtc_y; + else + patched_crtc_h = state->crtc_h; + + if (state->crtc_y < 0) { + patched_crtc_h += state->crtc_y; + y_offset = -state->crtc_y; + state->crtc_y = 0; + } + + patched_src_w = DIV_ROUND_CLOSEST(patched_crtc_w * state->src_w, + state->crtc_w); + patched_src_h = DIV_ROUND_CLOSEST(patched_crtc_h * state->src_h, + state->crtc_h); + + hsub = drm_format_horz_chroma_subsampling(fb->pixel_format); + vsub = drm_format_vert_chroma_subsampling(fb->pixel_format); + + for (i = 0; i < state->nplanes; i++) { + unsigned int offset = 0; + int xdiv = i ? hsub : 1; + int ydiv = i ? vsub : 1; + + state->bpp[i] = drm_format_plane_cpp(fb->pixel_format, i); + if (!state->bpp[i]) + return -EINVAL; + + switch (state->base.rotation & 0xf) { + case BIT(DRM_ROTATE_90): + offset = ((y_offset + state->src_y + patched_src_w - 1) / + ydiv) * fb->pitches[i]; + offset += ((x_offset + state->src_x) / xdiv) * + state->bpp[i]; + state->xstride[i] = ((patched_src_w - 1) / ydiv) * + fb->pitches[i]; + state->pstride[i] = -fb->pitches[i] - state->bpp[i]; + break; + case BIT(DRM_ROTATE_180): + offset = ((y_offset + state->src_y + patched_src_h - 1) / + ydiv) * fb->pitches[i]; + offset += ((x_offset + state->src_x + patched_src_w - 1) / + xdiv) * state->bpp[i]; + state->xstride[i] = ((((patched_src_w - 1) / xdiv) - 1) * + state->bpp[i]) - fb->pitches[i]; + state->pstride[i] = -2 * state->bpp[i]; + break; + case BIT(DRM_ROTATE_270): + offset = ((y_offset + state->src_y) / ydiv) * + fb->pitches[i]; + offset += ((x_offset + state->src_x + patched_src_h - 1) / + xdiv) * state->bpp[i]; + state->xstride[i] = -(((patched_src_w - 1) / ydiv) * + fb->pitches[i]) - + (2 * state->bpp[i]); + state->pstride[i] = fb->pitches[i] - state->bpp[i]; + break; + case BIT(DRM_ROTATE_0): + default: + offset = ((y_offset + state->src_y) / ydiv) * + fb->pitches[i]; + offset += ((x_offset + state->src_x) / xdiv) * + state->bpp[i]; + state->xstride[i] = fb->pitches[i] - + ((patched_src_w / xdiv) * + state->bpp[i]); + state->pstride[i] = 0; + break; + } + + state->offsets[i] = offset + fb->offsets[i]; + } + + state->src_w = patched_src_w; + state->src_h = patched_src_h; + state->crtc_w = patched_crtc_w; + state->crtc_h = patched_crtc_h; + + if (!layout->size && + (mode->hdisplay != state->crtc_w || + mode->vdisplay != state->crtc_h)) + return -EINVAL; + + if (plane->layer.desc->max_height && + state->crtc_h > plane->layer.desc->max_height) + return -EINVAL; + + if (plane->layer.desc->max_width && + state->crtc_w > plane->layer.desc->max_width) + return -EINVAL; + + if ((state->crtc_h != state->src_h || state->crtc_w != state->src_w) && + (!layout->memsize || + atmel_hlcdc_format_embeds_alpha(state->base.fb->pixel_format))) + return -EINVAL; + + if (state->crtc_x < 0 || state->crtc_y < 0) + return -EINVAL; + + if (state->crtc_w + state->crtc_x > mode->hdisplay || + state->crtc_h + state->crtc_y > mode->vdisplay) + return -EINVAL; + + return 0; +} + +static int atmel_hlcdc_plane_prepare_fb(struct drm_plane *p, + struct drm_framebuffer *fb, + const struct drm_plane_state *new_state) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + + return atmel_hlcdc_layer_update_start(&plane->layer); +} + +static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p, + struct drm_plane_state *old_s) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + struct atmel_hlcdc_plane_state *state = + drm_plane_state_to_atmel_hlcdc_plane_state(p->state); + + if (!p->state->crtc || !p->state->fb) + return; + + atmel_hlcdc_plane_update_pos_and_size(plane, state); + atmel_hlcdc_plane_update_general_settings(plane, state); + atmel_hlcdc_plane_update_format(plane, state); + atmel_hlcdc_plane_update_buffers(plane, state); + atmel_hlcdc_plane_update_disc_area(plane, state); + + atmel_hlcdc_layer_update_commit(&plane->layer); +} + +static void atmel_hlcdc_plane_atomic_disable(struct drm_plane *p, + struct drm_plane_state *old_state) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + + 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_atomic_set_property(struct drm_plane *p, + struct drm_plane_state *s, + struct drm_property *property, + uint64_t val) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + struct atmel_hlcdc_plane_properties *props = plane->properties; + struct atmel_hlcdc_plane_state *state = + drm_plane_state_to_atmel_hlcdc_plane_state(s); + + if (property == props->alpha) + state->alpha = val; + else + return -EINVAL; + + return 0; +} + +static int atmel_hlcdc_plane_atomic_get_property(struct drm_plane *p, + const struct drm_plane_state *s, + struct drm_property *property, + uint64_t *val) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + struct atmel_hlcdc_plane_properties *props = plane->properties; + const struct atmel_hlcdc_plane_state *state = + container_of(s, const struct atmel_hlcdc_plane_state, base); + + if (property == props->alpha) + *val = state->alpha; + 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, + plane->base.dev->mode_config.rotation_property, + 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_helper_funcs atmel_hlcdc_layer_plane_helper_funcs = { + .prepare_fb = atmel_hlcdc_plane_prepare_fb, + .atomic_check = atmel_hlcdc_plane_atomic_check, + .atomic_update = atmel_hlcdc_plane_atomic_update, + .atomic_disable = atmel_hlcdc_plane_atomic_disable, +}; + +static void atmel_hlcdc_plane_reset(struct drm_plane *p) +{ + struct atmel_hlcdc_plane_state *state; + + if (p->state) { + state = drm_plane_state_to_atmel_hlcdc_plane_state(p->state); + + if (state->base.fb) + drm_framebuffer_unreference(state->base.fb); + + kfree(state); + p->state = NULL; + } + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (state) { + state->alpha = 255; + p->state = &state->base; + p->state->plane = p; + } +} + +static struct drm_plane_state * +atmel_hlcdc_plane_atomic_duplicate_state(struct drm_plane *p) +{ + struct atmel_hlcdc_plane_state *state = + drm_plane_state_to_atmel_hlcdc_plane_state(p->state); + struct atmel_hlcdc_plane_state *copy; + + copy = kmemdup(state, sizeof(*state), GFP_KERNEL); + if (!copy) + return NULL; + + copy->disc_updated = false; + + if (copy->base.fb) + drm_framebuffer_reference(copy->base.fb); + + return ©->base; +} + +static void atmel_hlcdc_plane_atomic_destroy_state(struct drm_plane *plane, + struct drm_plane_state *s) +{ + struct atmel_hlcdc_plane_state *state = + drm_plane_state_to_atmel_hlcdc_plane_state(s); + + if (s->fb) + drm_framebuffer_unreference(s->fb); + + kfree(state); +} + +static struct drm_plane_funcs layer_plane_funcs = { + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, + .set_property = drm_atomic_helper_plane_set_property, + .destroy = atmel_hlcdc_plane_destroy, + .reset = atmel_hlcdc_plane_reset, + .atomic_duplicate_state = atmel_hlcdc_plane_atomic_duplicate_state, + .atomic_destroy_state = atmel_hlcdc_plane_atomic_destroy_state, + .atomic_set_property = atmel_hlcdc_plane_atomic_set_property, + .atomic_get_property = atmel_hlcdc_plane_atomic_get_property, +}; + +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); + + drm_plane_helper_add(&plane->base, + &atmel_hlcdc_layer_plane_helper_funcs); + + /* 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); + + dev->mode_config.rotation_property = + drm_mode_create_rotation_property(dev, + BIT(DRM_ROTATE_0) | + BIT(DRM_ROTATE_90) | + BIT(DRM_ROTATE_180) | + BIT(DRM_ROTATE_270)); + if (!dev->mode_config.rotation_property) + 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; +}