diff options
Diffstat (limited to 'drivers/staging/omapdrm/omap_fb.c')
| -rw-r--r-- | drivers/staging/omapdrm/omap_fb.c | 224 |
1 files changed, 167 insertions, 57 deletions
diff --git a/drivers/staging/omapdrm/omap_fb.c b/drivers/staging/omapdrm/omap_fb.c index 0b50c5b3b56..d021a7ec58d 100644 --- a/drivers/staging/omapdrm/omap_fb.c +++ b/drivers/staging/omapdrm/omap_fb.c @@ -22,18 +22,57 @@ #include "drm_crtc.h" #include "drm_crtc_helper.h" - /* * framebuffer funcs */ +/* per-format info: */ +struct format { + enum omap_color_mode dss_format; + uint32_t pixel_format; + struct { + int stride_bpp; /* this times width is stride */ + int sub_y; /* sub-sample in y dimension */ + } planes[4]; + bool yuv; +}; + +static const struct format formats[] = { + /* 16bpp [A]RGB: */ + { OMAP_DSS_COLOR_RGB16, DRM_FORMAT_RGB565, {{2, 1}}, false }, /* RGB16-565 */ + { OMAP_DSS_COLOR_RGB12U, DRM_FORMAT_RGBX4444, {{2, 1}}, false }, /* RGB12x-4444 */ + { OMAP_DSS_COLOR_RGBX16, DRM_FORMAT_XRGB4444, {{2, 1}}, false }, /* xRGB12-4444 */ + { OMAP_DSS_COLOR_RGBA16, DRM_FORMAT_RGBA4444, {{2, 1}}, false }, /* RGBA12-4444 */ + { OMAP_DSS_COLOR_ARGB16, DRM_FORMAT_ARGB4444, {{2, 1}}, false }, /* ARGB16-4444 */ + { OMAP_DSS_COLOR_XRGB16_1555, DRM_FORMAT_XRGB1555, {{2, 1}}, false }, /* xRGB15-1555 */ + { OMAP_DSS_COLOR_ARGB16_1555, DRM_FORMAT_ARGB1555, {{2, 1}}, false }, /* ARGB16-1555 */ + /* 24bpp RGB: */ + { OMAP_DSS_COLOR_RGB24P, DRM_FORMAT_RGB888, {{3, 1}}, false }, /* RGB24-888 */ + /* 32bpp [A]RGB: */ + { OMAP_DSS_COLOR_RGBX32, DRM_FORMAT_RGBX8888, {{4, 1}}, false }, /* RGBx24-8888 */ + { OMAP_DSS_COLOR_RGB24U, DRM_FORMAT_XRGB8888, {{4, 1}}, false }, /* xRGB24-8888 */ + { OMAP_DSS_COLOR_RGBA32, DRM_FORMAT_RGBA8888, {{4, 1}}, false }, /* RGBA32-8888 */ + { OMAP_DSS_COLOR_ARGB32, DRM_FORMAT_ARGB8888, {{4, 1}}, false }, /* ARGB32-8888 */ + /* YUV: */ + { OMAP_DSS_COLOR_NV12, DRM_FORMAT_NV12, {{1, 1}, {1, 2}}, true }, + { OMAP_DSS_COLOR_YUV2, DRM_FORMAT_YUYV, {{2, 1}}, true }, + { OMAP_DSS_COLOR_UYVY, DRM_FORMAT_UYVY, {{2, 1}}, true }, +}; + +/* per-plane info for the fb: */ +struct plane { + struct drm_gem_object *bo; + uint32_t pitch; + uint32_t offset; + dma_addr_t paddr; +}; + #define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base) struct omap_framebuffer { struct drm_framebuffer base; - struct drm_gem_object *bo; - int size; - dma_addr_t paddr; + const struct format *format; + struct plane planes[4]; }; static int omap_framebuffer_create_handle(struct drm_framebuffer *fb, @@ -41,22 +80,23 @@ static int omap_framebuffer_create_handle(struct drm_framebuffer *fb, unsigned int *handle) { struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); - return drm_gem_handle_create(file_priv, omap_fb->bo, handle); + return drm_gem_handle_create(file_priv, + omap_fb->planes[0].bo, handle); } static void omap_framebuffer_destroy(struct drm_framebuffer *fb) { - struct drm_device *dev = fb->dev; struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); + int i, n = drm_format_num_planes(omap_fb->format->pixel_format); DBG("destroy: FB ID: %d (%p)", fb->base.id, fb); drm_framebuffer_cleanup(fb); - if (omap_fb->bo) { - if (omap_fb->paddr && omap_gem_put_paddr(omap_fb->bo)) - dev_err(dev->dev, "could not unmap!\n"); - drm_gem_object_unreference_unlocked(omap_fb->bo); + for (i = 0; i < n; i++) { + struct plane *plane = &omap_fb->planes[i]; + if (plane->bo) + drm_gem_object_unreference_unlocked(plane->bo); } kfree(omap_fb); @@ -83,37 +123,76 @@ static const struct drm_framebuffer_funcs omap_framebuffer_funcs = { .dirty = omap_framebuffer_dirty, }; -/* returns the buffer size */ -int omap_framebuffer_get_buffer(struct drm_framebuffer *fb, int x, int y, - void **vaddr, dma_addr_t *paddr, unsigned int *screen_width) +/* pins buffer in preparation for scanout */ +int omap_framebuffer_pin(struct drm_framebuffer *fb) { struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); - int bpp = fb->bits_per_pixel / 8; - unsigned long offset; + int ret, i, n = drm_format_num_planes(omap_fb->format->pixel_format); - offset = (x * bpp) + (y * fb->pitch); + for (i = 0; i < n; i++) { + struct plane *plane = &omap_fb->planes[i]; + ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true); + if (ret) + goto fail; + } - if (vaddr) { - void *bo_vaddr = omap_gem_vaddr(omap_fb->bo); - /* note: we can only count on having a vaddr for buffers that - * are allocated physically contiguously to begin with (ie. - * dma_alloc_coherent()). But this should be ok because it - * is only used by legacy fbdev - */ - BUG_ON(IS_ERR_OR_NULL(bo_vaddr)); - *vaddr = bo_vaddr + offset; + return 0; + +fail: + while (--i > 0) { + struct plane *plane = &omap_fb->planes[i]; + omap_gem_put_paddr(plane->bo); } + return ret; +} - *paddr = omap_fb->paddr + offset; - *screen_width = fb->pitch / bpp; +/* releases buffer when done with scanout */ +void omap_framebuffer_unpin(struct drm_framebuffer *fb) +{ + struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); + int i, n = drm_format_num_planes(omap_fb->format->pixel_format); - return omap_fb->size - offset; + for (i = 0; i < n; i++) { + struct plane *plane = &omap_fb->planes[i]; + omap_gem_put_paddr(plane->bo); + } } -struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb) +/* update ovl info for scanout, handles cases of multi-planar fb's, etc. + */ +void omap_framebuffer_update_scanout(struct drm_framebuffer *fb, int x, int y, + struct omap_overlay_info *info) { struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); - return omap_fb->bo; + const struct format *format = omap_fb->format; + struct plane *plane = &omap_fb->planes[0]; + unsigned int offset; + + offset = plane->offset + + (x * format->planes[0].stride_bpp) + + (y * plane->pitch / format->planes[0].sub_y); + + info->color_mode = format->dss_format; + info->paddr = plane->paddr + offset; + info->screen_width = plane->pitch / format->planes[0].stride_bpp; + + if (format->dss_format == OMAP_DSS_COLOR_NV12) { + plane = &omap_fb->planes[1]; + offset = plane->offset + + (x * format->planes[1].stride_bpp) + + (y * plane->pitch / format->planes[1].sub_y); + info->p_uv_addr = plane->paddr + offset; + } else { + info->p_uv_addr = 0; + } +} + +struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p) +{ + struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); + if (p >= drm_format_num_planes(omap_fb->format->pixel_format)) + return NULL; + return omap_fb->planes[p].bo; } /* iterate thru all the connectors, returning ones that are attached @@ -171,39 +250,57 @@ void omap_framebuffer_flush(struct drm_framebuffer *fb, } struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev, - struct drm_file *file, struct drm_mode_fb_cmd *mode_cmd) + struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd) { - struct drm_gem_object *bo; + struct drm_gem_object *bos[4]; struct drm_framebuffer *fb; - bo = drm_gem_object_lookup(dev, file, mode_cmd->handle); - if (!bo) { - return ERR_PTR(-ENOENT); - } - fb = omap_framebuffer_init(dev, mode_cmd, bo); - if (!fb) { - return ERR_PTR(-ENOMEM); + int ret; + + ret = objects_lookup(dev, file, mode_cmd->pixel_format, + bos, mode_cmd->handles); + if (ret) + return ERR_PTR(ret); + + fb = omap_framebuffer_init(dev, mode_cmd, bos); + if (IS_ERR(fb)) { + int i, n = drm_format_num_planes(mode_cmd->pixel_format); + for (i = 0; i < n; i++) + drm_gem_object_unreference_unlocked(bos[i]); + return fb; } return fb; } struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, - struct drm_mode_fb_cmd *mode_cmd, struct drm_gem_object *bo) + struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos) { struct omap_framebuffer *omap_fb; struct drm_framebuffer *fb = NULL; - int size, ret; + const struct format *format = NULL; + int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format); - DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%d)", + DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)", dev, mode_cmd, mode_cmd->width, mode_cmd->height, - mode_cmd->bpp); + (char *)&mode_cmd->pixel_format); + + for (i = 0; i < ARRAY_SIZE(formats); i++) { + if (formats[i].pixel_format == mode_cmd->pixel_format) { + format = &formats[i]; + break; + } + } - /* in case someone tries to feed us a completely bogus stride: */ - mode_cmd->pitch = align_pitch(mode_cmd->pitch, - mode_cmd->width, mode_cmd->bpp); + if (!format) { + dev_err(dev->dev, "unsupported pixel format: %4.4s\n", + (char *)&mode_cmd->pixel_format); + ret = -EINVAL; + goto fail; + } omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL); if (!omap_fb) { dev_err(dev->dev, "could not allocate fb\n"); + ret = -ENOMEM; goto fail; } @@ -216,19 +313,32 @@ struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, DBG("create: FB ID: %d (%p)", fb->base.id, fb); - size = PAGE_ALIGN(mode_cmd->pitch * mode_cmd->height); + omap_fb->format = format; - if (size > bo->size) { - dev_err(dev->dev, "provided buffer object is too small!\n"); - goto fail; - } + for (i = 0; i < n; i++) { + struct plane *plane = &omap_fb->planes[i]; + int size, pitch = mode_cmd->pitches[i]; + + if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) { + dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n", + pitch, mode_cmd->width * format->planes[i].stride_bpp); + ret = -EINVAL; + goto fail; + } - omap_fb->bo = bo; - omap_fb->size = size; + size = pitch * mode_cmd->height / format->planes[i].sub_y; - if (omap_gem_get_paddr(bo, &omap_fb->paddr, true)) { - dev_err(dev->dev, "could not map (paddr)!\n"); - goto fail; + if (size > (bos[i]->size - mode_cmd->offsets[i])) { + dev_err(dev->dev, "provided buffer object is too small! %d < %d\n", + bos[i]->size - mode_cmd->offsets[i], size); + ret = -EINVAL; + goto fail; + } + + plane->bo = bos[i]; + plane->offset = mode_cmd->offsets[i]; + plane->pitch = mode_cmd->pitches[i]; + plane->paddr = pitch; } drm_helper_mode_fill_fb_struct(fb, mode_cmd); @@ -239,5 +349,5 @@ fail: if (fb) { omap_framebuffer_destroy(fb); } - return NULL; + return ERR_PTR(ret); } |