485 lines
13 KiB
C
485 lines
13 KiB
C
/*
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* drivers/gpu/drm/omapdrm/omap_fb.c
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*
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* Copyright (C) 2011 Texas Instruments
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* Author: Rob Clark <rob@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "omap_drv.h"
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#include "omap_dmm_tiler.h"
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#include "drm_crtc.h"
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#include "drm_crtc_helper.h"
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/*
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* framebuffer funcs
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*/
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/* per-format info: */
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struct format {
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enum omap_color_mode dss_format;
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uint32_t pixel_format;
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struct {
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int stride_bpp; /* this times width is stride */
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int sub_y; /* sub-sample in y dimension */
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} planes[4];
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bool yuv;
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};
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static const struct format formats[] = {
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/* 16bpp [A]RGB: */
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{ OMAP_DSS_COLOR_RGB16, DRM_FORMAT_RGB565, {{2, 1}}, false }, /* RGB16-565 */
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{ OMAP_DSS_COLOR_RGB12U, DRM_FORMAT_RGBX4444, {{2, 1}}, false }, /* RGB12x-4444 */
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{ OMAP_DSS_COLOR_RGBX16, DRM_FORMAT_XRGB4444, {{2, 1}}, false }, /* xRGB12-4444 */
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{ OMAP_DSS_COLOR_RGBA16, DRM_FORMAT_RGBA4444, {{2, 1}}, false }, /* RGBA12-4444 */
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{ OMAP_DSS_COLOR_ARGB16, DRM_FORMAT_ARGB4444, {{2, 1}}, false }, /* ARGB16-4444 */
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{ OMAP_DSS_COLOR_XRGB16_1555, DRM_FORMAT_XRGB1555, {{2, 1}}, false }, /* xRGB15-1555 */
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{ OMAP_DSS_COLOR_ARGB16_1555, DRM_FORMAT_ARGB1555, {{2, 1}}, false }, /* ARGB16-1555 */
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/* 24bpp RGB: */
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{ OMAP_DSS_COLOR_RGB24P, DRM_FORMAT_RGB888, {{3, 1}}, false }, /* RGB24-888 */
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/* 32bpp [A]RGB: */
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{ OMAP_DSS_COLOR_RGBX32, DRM_FORMAT_RGBX8888, {{4, 1}}, false }, /* RGBx24-8888 */
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{ OMAP_DSS_COLOR_RGB24U, DRM_FORMAT_XRGB8888, {{4, 1}}, false }, /* xRGB24-8888 */
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{ OMAP_DSS_COLOR_RGBA32, DRM_FORMAT_RGBA8888, {{4, 1}}, false }, /* RGBA32-8888 */
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{ OMAP_DSS_COLOR_ARGB32, DRM_FORMAT_ARGB8888, {{4, 1}}, false }, /* ARGB32-8888 */
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/* YUV: */
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{ OMAP_DSS_COLOR_NV12, DRM_FORMAT_NV12, {{1, 1}, {1, 2}}, true },
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{ OMAP_DSS_COLOR_YUV2, DRM_FORMAT_YUYV, {{2, 1}}, true },
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{ OMAP_DSS_COLOR_UYVY, DRM_FORMAT_UYVY, {{2, 1}}, true },
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};
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/* convert from overlay's pixel formats bitmask to an array of fourcc's */
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uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
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uint32_t max_formats, enum omap_color_mode supported_modes)
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{
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uint32_t nformats = 0;
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int i = 0;
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for (i = 0; i < ARRAY_SIZE(formats) && nformats < max_formats; i++)
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if (formats[i].dss_format & supported_modes)
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pixel_formats[nformats++] = formats[i].pixel_format;
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return nformats;
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}
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/* per-plane info for the fb: */
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struct plane {
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struct drm_gem_object *bo;
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uint32_t pitch;
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uint32_t offset;
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dma_addr_t paddr;
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};
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#define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
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struct omap_framebuffer {
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struct drm_framebuffer base;
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const struct format *format;
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struct plane planes[4];
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};
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static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
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struct drm_file *file_priv,
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unsigned int *handle)
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{
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struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
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return drm_gem_handle_create(file_priv,
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omap_fb->planes[0].bo, handle);
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}
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static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
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{
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struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
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int i, n = drm_format_num_planes(fb->pixel_format);
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DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
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drm_framebuffer_cleanup(fb);
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for (i = 0; i < n; i++) {
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struct plane *plane = &omap_fb->planes[i];
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if (plane->bo)
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drm_gem_object_unreference_unlocked(plane->bo);
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}
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kfree(omap_fb);
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}
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static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
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struct drm_file *file_priv, unsigned flags, unsigned color,
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struct drm_clip_rect *clips, unsigned num_clips)
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{
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int i;
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drm_modeset_lock_all(fb->dev);
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for (i = 0; i < num_clips; i++) {
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omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1,
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clips[i].x2 - clips[i].x1,
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clips[i].y2 - clips[i].y1);
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}
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drm_modeset_unlock_all(fb->dev);
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return 0;
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}
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static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
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.create_handle = omap_framebuffer_create_handle,
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.destroy = omap_framebuffer_destroy,
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.dirty = omap_framebuffer_dirty,
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};
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static uint32_t get_linear_addr(struct plane *plane,
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const struct format *format, int n, int x, int y)
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{
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uint32_t offset;
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offset = plane->offset +
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(x * format->planes[n].stride_bpp) +
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(y * plane->pitch / format->planes[n].sub_y);
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return plane->paddr + offset;
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}
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/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
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*/
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void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
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struct omap_drm_window *win, struct omap_overlay_info *info)
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{
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struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
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const struct format *format = omap_fb->format;
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struct plane *plane = &omap_fb->planes[0];
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uint32_t x, y, orient = 0;
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info->color_mode = format->dss_format;
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info->pos_x = win->crtc_x;
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info->pos_y = win->crtc_y;
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info->out_width = win->crtc_w;
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info->out_height = win->crtc_h;
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info->width = win->src_w;
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info->height = win->src_h;
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x = win->src_x;
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y = win->src_y;
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if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
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uint32_t w = win->src_w;
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uint32_t h = win->src_h;
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switch (win->rotation & 0xf) {
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default:
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dev_err(fb->dev->dev, "invalid rotation: %02x",
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(uint32_t)win->rotation);
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/* fallthru to default to no rotation */
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case 0:
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case BIT(DRM_ROTATE_0):
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orient = 0;
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break;
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case BIT(DRM_ROTATE_90):
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orient = MASK_XY_FLIP | MASK_X_INVERT;
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break;
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case BIT(DRM_ROTATE_180):
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orient = MASK_X_INVERT | MASK_Y_INVERT;
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break;
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case BIT(DRM_ROTATE_270):
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orient = MASK_XY_FLIP | MASK_Y_INVERT;
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break;
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}
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if (win->rotation & BIT(DRM_REFLECT_X))
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orient ^= MASK_X_INVERT;
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if (win->rotation & BIT(DRM_REFLECT_Y))
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orient ^= MASK_Y_INVERT;
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/* adjust x,y offset for flip/invert: */
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if (orient & MASK_XY_FLIP)
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swap(w, h);
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if (orient & MASK_Y_INVERT)
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y += h - 1;
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if (orient & MASK_X_INVERT)
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x += w - 1;
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omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
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info->rotation_type = OMAP_DSS_ROT_TILER;
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info->screen_width = omap_gem_tiled_stride(plane->bo, orient);
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} else {
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switch (win->rotation & 0xf) {
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case 0:
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case BIT(DRM_ROTATE_0):
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/* OK */
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break;
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default:
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dev_warn(fb->dev->dev,
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"rotation '%d' ignored for non-tiled fb\n",
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win->rotation);
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win->rotation = 0;
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break;
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}
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info->paddr = get_linear_addr(plane, format, 0, x, y);
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info->rotation_type = OMAP_DSS_ROT_DMA;
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info->screen_width = plane->pitch;
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}
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/* convert to pixels: */
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info->screen_width /= format->planes[0].stride_bpp;
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if (format->dss_format == OMAP_DSS_COLOR_NV12) {
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plane = &omap_fb->planes[1];
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if (info->rotation_type == OMAP_DSS_ROT_TILER) {
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WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
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omap_gem_rotated_paddr(plane->bo, orient,
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x/2, y/2, &info->p_uv_addr);
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} else {
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info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
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}
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} else {
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info->p_uv_addr = 0;
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}
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}
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/* pin, prepare for scanout: */
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int omap_framebuffer_pin(struct drm_framebuffer *fb)
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{
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struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
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int ret, i, n = drm_format_num_planes(fb->pixel_format);
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for (i = 0; i < n; i++) {
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struct plane *plane = &omap_fb->planes[i];
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ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true);
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if (ret)
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goto fail;
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omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE);
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}
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return 0;
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fail:
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for (i--; i >= 0; i--) {
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struct plane *plane = &omap_fb->planes[i];
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omap_gem_put_paddr(plane->bo);
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plane->paddr = 0;
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}
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return ret;
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}
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/* unpin, no longer being scanned out: */
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int omap_framebuffer_unpin(struct drm_framebuffer *fb)
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{
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struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
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int ret, i, n = drm_format_num_planes(fb->pixel_format);
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for (i = 0; i < n; i++) {
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struct plane *plane = &omap_fb->planes[i];
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ret = omap_gem_put_paddr(plane->bo);
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if (ret)
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goto fail;
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plane->paddr = 0;
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}
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return 0;
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fail:
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return ret;
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}
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struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p)
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{
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struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
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if (p >= drm_format_num_planes(fb->pixel_format))
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return NULL;
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return omap_fb->planes[p].bo;
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}
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/* iterate thru all the connectors, returning ones that are attached
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* to the same fb..
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*/
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struct drm_connector *omap_framebuffer_get_next_connector(
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struct drm_framebuffer *fb, struct drm_connector *from)
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{
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struct drm_device *dev = fb->dev;
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struct list_head *connector_list = &dev->mode_config.connector_list;
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struct drm_connector *connector = from;
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if (!from)
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return list_first_entry_or_null(connector_list, typeof(*from),
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head);
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list_for_each_entry_from(connector, connector_list, head) {
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if (connector != from) {
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struct drm_encoder *encoder = connector->encoder;
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struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
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if (crtc && crtc->primary->fb == fb)
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return connector;
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}
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}
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return NULL;
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}
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/* flush an area of the framebuffer (in case of manual update display that
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* is not automatically flushed)
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*/
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void omap_framebuffer_flush(struct drm_framebuffer *fb,
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int x, int y, int w, int h)
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{
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struct drm_connector *connector = NULL;
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VERB("flush: %d,%d %dx%d, fb=%p", x, y, w, h, fb);
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/* FIXME: This is racy - no protection against modeset config changes. */
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while ((connector = omap_framebuffer_get_next_connector(fb, connector))) {
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/* only consider connectors that are part of a chain */
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if (connector->encoder && connector->encoder->crtc) {
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/* TODO: maybe this should propagate thru the crtc who
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* could do the coordinate translation..
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*/
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struct drm_crtc *crtc = connector->encoder->crtc;
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int cx = max(0, x - crtc->x);
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int cy = max(0, y - crtc->y);
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int cw = w + (x - crtc->x) - cx;
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int ch = h + (y - crtc->y) - cy;
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omap_connector_flush(connector, cx, cy, cw, ch);
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}
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}
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}
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#ifdef CONFIG_DEBUG_FS
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void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
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{
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struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
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int i, n = drm_format_num_planes(fb->pixel_format);
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seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
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(char *)&fb->pixel_format);
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for (i = 0; i < n; i++) {
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struct plane *plane = &omap_fb->planes[i];
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seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
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i, plane->offset, plane->pitch);
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omap_gem_describe(plane->bo, m);
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}
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}
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#endif
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struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
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struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd)
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{
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struct drm_gem_object *bos[4];
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struct drm_framebuffer *fb;
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int ret;
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ret = objects_lookup(dev, file, mode_cmd->pixel_format,
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bos, mode_cmd->handles);
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if (ret)
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return ERR_PTR(ret);
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fb = omap_framebuffer_init(dev, mode_cmd, bos);
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if (IS_ERR(fb)) {
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int i, n = drm_format_num_planes(mode_cmd->pixel_format);
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for (i = 0; i < n; i++)
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drm_gem_object_unreference_unlocked(bos[i]);
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return fb;
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}
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return fb;
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}
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struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
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struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
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{
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struct omap_framebuffer *omap_fb;
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struct drm_framebuffer *fb = NULL;
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const struct format *format = NULL;
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int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
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DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
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dev, mode_cmd, mode_cmd->width, mode_cmd->height,
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(char *)&mode_cmd->pixel_format);
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for (i = 0; i < ARRAY_SIZE(formats); i++) {
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if (formats[i].pixel_format == mode_cmd->pixel_format) {
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format = &formats[i];
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break;
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}
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}
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if (!format) {
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dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
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(char *)&mode_cmd->pixel_format);
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ret = -EINVAL;
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goto fail;
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}
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omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
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if (!omap_fb) {
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ret = -ENOMEM;
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goto fail;
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}
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fb = &omap_fb->base;
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omap_fb->format = format;
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for (i = 0; i < n; i++) {
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struct plane *plane = &omap_fb->planes[i];
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int size, pitch = mode_cmd->pitches[i];
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if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) {
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dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n",
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pitch, mode_cmd->width * format->planes[i].stride_bpp);
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ret = -EINVAL;
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goto fail;
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}
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size = pitch * mode_cmd->height / format->planes[i].sub_y;
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if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) {
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dev_err(dev->dev, "provided buffer object is too small! %d < %d\n",
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bos[i]->size - mode_cmd->offsets[i], size);
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ret = -EINVAL;
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goto fail;
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}
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plane->bo = bos[i];
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plane->offset = mode_cmd->offsets[i];
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plane->pitch = pitch;
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plane->paddr = 0;
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}
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drm_helper_mode_fill_fb_struct(fb, mode_cmd);
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ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
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if (ret) {
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dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
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goto fail;
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}
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DBG("create: FB ID: %d (%p)", fb->base.id, fb);
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return fb;
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fail:
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|
if (fb)
|
|
omap_framebuffer_destroy(fb);
|
|
|
|
return ERR_PTR(ret);
|
|
}
|