ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/gpu/drm/omapdrm/omap_fb.c b/marvell/linux/drivers/gpu/drm/omapdrm/omap_fb.c
new file mode 100644
index 0000000..1b8b510
--- /dev/null
+++ b/marvell/linux/drivers/gpu/drm/omapdrm/omap_fb.c
@@ -0,0 +1,428 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: Rob Clark <rob@ti.com>
+ */
+
+#include <linux/dma-mapping.h>
+
+#include <drm/drm_modeset_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+
+#include "omap_dmm_tiler.h"
+#include "omap_drv.h"
+
+/*
+ * framebuffer funcs
+ */
+
+static const u32 formats[] = {
+ /* 16bpp [A]RGB: */
+ DRM_FORMAT_RGB565, /* RGB16-565 */
+ DRM_FORMAT_RGBX4444, /* RGB12x-4444 */
+ DRM_FORMAT_XRGB4444, /* xRGB12-4444 */
+ DRM_FORMAT_RGBA4444, /* RGBA12-4444 */
+ DRM_FORMAT_ARGB4444, /* ARGB16-4444 */
+ DRM_FORMAT_XRGB1555, /* xRGB15-1555 */
+ DRM_FORMAT_ARGB1555, /* ARGB16-1555 */
+ /* 24bpp RGB: */
+ DRM_FORMAT_RGB888, /* RGB24-888 */
+ /* 32bpp [A]RGB: */
+ DRM_FORMAT_RGBX8888, /* RGBx24-8888 */
+ DRM_FORMAT_XRGB8888, /* xRGB24-8888 */
+ DRM_FORMAT_RGBA8888, /* RGBA32-8888 */
+ DRM_FORMAT_ARGB8888, /* ARGB32-8888 */
+ /* YUV: */
+ DRM_FORMAT_NV12,
+ DRM_FORMAT_YUYV,
+ DRM_FORMAT_UYVY,
+};
+
+/* per-plane info for the fb: */
+struct plane {
+ dma_addr_t dma_addr;
+};
+
+#define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
+
+struct omap_framebuffer {
+ struct drm_framebuffer base;
+ int pin_count;
+ const struct drm_format_info *format;
+ struct plane planes[2];
+ /* lock for pinning (pin_count and planes.dma_addr) */
+ struct mutex lock;
+};
+
+static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
+ struct drm_file *file_priv,
+ unsigned flags, unsigned color,
+ struct drm_clip_rect *clips,
+ unsigned num_clips)
+{
+ struct drm_crtc *crtc;
+
+ drm_modeset_lock_all(fb->dev);
+
+ drm_for_each_crtc(crtc, fb->dev)
+ omap_crtc_flush(crtc);
+
+ drm_modeset_unlock_all(fb->dev);
+
+ return 0;
+}
+
+static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
+ .create_handle = drm_gem_fb_create_handle,
+ .dirty = omap_framebuffer_dirty,
+ .destroy = drm_gem_fb_destroy,
+};
+
+static u32 get_linear_addr(struct drm_framebuffer *fb,
+ const struct drm_format_info *format, int n, int x, int y)
+{
+ struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
+ struct plane *plane = &omap_fb->planes[n];
+ u32 offset;
+
+ offset = fb->offsets[n]
+ + (x * format->cpp[n] / (n == 0 ? 1 : format->hsub))
+ + (y * fb->pitches[n] / (n == 0 ? 1 : format->vsub));
+
+ return plane->dma_addr + offset;
+}
+
+bool omap_framebuffer_supports_rotation(struct drm_framebuffer *fb)
+{
+ return omap_gem_flags(fb->obj[0]) & OMAP_BO_TILED;
+}
+
+/* Note: DRM rotates counter-clockwise, TILER & DSS rotates clockwise */
+static u32 drm_rotation_to_tiler(unsigned int drm_rot)
+{
+ u32 orient;
+
+ switch (drm_rot & DRM_MODE_ROTATE_MASK) {
+ default:
+ case DRM_MODE_ROTATE_0:
+ orient = 0;
+ break;
+ case DRM_MODE_ROTATE_90:
+ orient = MASK_XY_FLIP | MASK_X_INVERT;
+ break;
+ case DRM_MODE_ROTATE_180:
+ orient = MASK_X_INVERT | MASK_Y_INVERT;
+ break;
+ case DRM_MODE_ROTATE_270:
+ orient = MASK_XY_FLIP | MASK_Y_INVERT;
+ break;
+ }
+
+ if (drm_rot & DRM_MODE_REFLECT_X)
+ orient ^= MASK_X_INVERT;
+
+ if (drm_rot & DRM_MODE_REFLECT_Y)
+ orient ^= MASK_Y_INVERT;
+
+ return orient;
+}
+
+/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
+ */
+void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
+ struct drm_plane_state *state, struct omap_overlay_info *info)
+{
+ struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
+ const struct drm_format_info *format = omap_fb->format;
+ struct plane *plane = &omap_fb->planes[0];
+ u32 x, y, orient = 0;
+
+ info->fourcc = fb->format->format;
+
+ info->pos_x = state->crtc_x;
+ info->pos_y = state->crtc_y;
+ info->out_width = state->crtc_w;
+ info->out_height = state->crtc_h;
+ info->width = state->src_w >> 16;
+ info->height = state->src_h >> 16;
+
+ /* DSS driver wants the w & h in rotated orientation */
+ if (drm_rotation_90_or_270(state->rotation))
+ swap(info->width, info->height);
+
+ x = state->src_x >> 16;
+ y = state->src_y >> 16;
+
+ if (omap_gem_flags(fb->obj[0]) & OMAP_BO_TILED) {
+ u32 w = state->src_w >> 16;
+ u32 h = state->src_h >> 16;
+
+ orient = drm_rotation_to_tiler(state->rotation);
+
+ /*
+ * omap_gem_rotated_paddr() wants the x & y in tiler units.
+ * Usually tiler unit size is the same as the pixel size, except
+ * for YUV422 formats, for which the tiler unit size is 32 bits
+ * and pixel size is 16 bits.
+ */
+ if (fb->format->format == DRM_FORMAT_UYVY ||
+ fb->format->format == DRM_FORMAT_YUYV) {
+ x /= 2;
+ w /= 2;
+ }
+
+ /* adjust x,y offset for invert: */
+ if (orient & MASK_Y_INVERT)
+ y += h - 1;
+ if (orient & MASK_X_INVERT)
+ x += w - 1;
+
+ /* Note: x and y are in TILER units, not pixels */
+ omap_gem_rotated_dma_addr(fb->obj[0], orient, x, y,
+ &info->paddr);
+ info->rotation_type = OMAP_DSS_ROT_TILER;
+ info->rotation = state->rotation ?: DRM_MODE_ROTATE_0;
+ /* Note: stride in TILER units, not pixels */
+ info->screen_width = omap_gem_tiled_stride(fb->obj[0], orient);
+ } else {
+ switch (state->rotation & DRM_MODE_ROTATE_MASK) {
+ case 0:
+ case DRM_MODE_ROTATE_0:
+ /* OK */
+ break;
+
+ default:
+ dev_warn(fb->dev->dev,
+ "rotation '%d' ignored for non-tiled fb\n",
+ state->rotation);
+ break;
+ }
+
+ info->paddr = get_linear_addr(fb, format, 0, x, y);
+ info->rotation_type = OMAP_DSS_ROT_NONE;
+ info->rotation = DRM_MODE_ROTATE_0;
+ info->screen_width = fb->pitches[0];
+ }
+
+ /* convert to pixels: */
+ info->screen_width /= format->cpp[0];
+
+ if (fb->format->format == DRM_FORMAT_NV12) {
+ plane = &omap_fb->planes[1];
+
+ if (info->rotation_type == OMAP_DSS_ROT_TILER) {
+ WARN_ON(!(omap_gem_flags(fb->obj[1]) & OMAP_BO_TILED));
+ omap_gem_rotated_dma_addr(fb->obj[1], orient, x/2, y/2,
+ &info->p_uv_addr);
+ } else {
+ info->p_uv_addr = get_linear_addr(fb, format, 1, x, y);
+ }
+ } else {
+ info->p_uv_addr = 0;
+ }
+}
+
+/* pin, prepare for scanout: */
+int omap_framebuffer_pin(struct drm_framebuffer *fb)
+{
+ struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
+ int ret, i, n = fb->format->num_planes;
+
+ mutex_lock(&omap_fb->lock);
+
+ if (omap_fb->pin_count > 0) {
+ omap_fb->pin_count++;
+ mutex_unlock(&omap_fb->lock);
+ return 0;
+ }
+
+ for (i = 0; i < n; i++) {
+ struct plane *plane = &omap_fb->planes[i];
+ ret = omap_gem_pin(fb->obj[i], &plane->dma_addr);
+ if (ret)
+ goto fail;
+ omap_gem_dma_sync_buffer(fb->obj[i], DMA_TO_DEVICE);
+ }
+
+ omap_fb->pin_count++;
+
+ mutex_unlock(&omap_fb->lock);
+
+ return 0;
+
+fail:
+ for (i--; i >= 0; i--) {
+ struct plane *plane = &omap_fb->planes[i];
+ omap_gem_unpin(fb->obj[i]);
+ plane->dma_addr = 0;
+ }
+
+ mutex_unlock(&omap_fb->lock);
+
+ return ret;
+}
+
+/* unpin, no longer being scanned out: */
+void omap_framebuffer_unpin(struct drm_framebuffer *fb)
+{
+ struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
+ int i, n = fb->format->num_planes;
+
+ mutex_lock(&omap_fb->lock);
+
+ omap_fb->pin_count--;
+
+ if (omap_fb->pin_count > 0) {
+ mutex_unlock(&omap_fb->lock);
+ return;
+ }
+
+ for (i = 0; i < n; i++) {
+ struct plane *plane = &omap_fb->planes[i];
+ omap_gem_unpin(fb->obj[i]);
+ plane->dma_addr = 0;
+ }
+
+ mutex_unlock(&omap_fb->lock);
+}
+
+#ifdef CONFIG_DEBUG_FS
+void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
+{
+ int i, n = fb->format->num_planes;
+
+ seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
+ (char *)&fb->format->format);
+
+ for (i = 0; i < n; i++) {
+ seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
+ i, fb->offsets[n], fb->pitches[i]);
+ omap_gem_describe(fb->obj[i], m);
+ }
+}
+#endif
+
+struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
+ struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
+{
+ const struct drm_format_info *info = drm_get_format_info(dev,
+ mode_cmd);
+ unsigned int num_planes = info->num_planes;
+ struct drm_gem_object *bos[4];
+ struct drm_framebuffer *fb;
+ int i;
+
+ for (i = 0; i < num_planes; i++) {
+ bos[i] = drm_gem_object_lookup(file, mode_cmd->handles[i]);
+ if (!bos[i]) {
+ fb = ERR_PTR(-ENOENT);
+ goto error;
+ }
+ }
+
+ fb = omap_framebuffer_init(dev, mode_cmd, bos);
+ if (IS_ERR(fb))
+ goto error;
+
+ return fb;
+
+error:
+ while (--i >= 0)
+ drm_gem_object_put_unlocked(bos[i]);
+
+ return fb;
+}
+
+struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
+ const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
+{
+ const struct drm_format_info *format = NULL;
+ struct omap_framebuffer *omap_fb = NULL;
+ struct drm_framebuffer *fb = NULL;
+ unsigned int pitch = mode_cmd->pitches[0];
+ int ret, i;
+
+ DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
+ dev, mode_cmd, mode_cmd->width, mode_cmd->height,
+ (char *)&mode_cmd->pixel_format);
+
+ format = drm_get_format_info(dev, mode_cmd);
+
+ for (i = 0; i < ARRAY_SIZE(formats); i++) {
+ if (formats[i] == mode_cmd->pixel_format)
+ break;
+ }
+
+ if (!format || i == ARRAY_SIZE(formats)) {
+ dev_dbg(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) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ fb = &omap_fb->base;
+ omap_fb->format = format;
+ mutex_init(&omap_fb->lock);
+
+ /*
+ * The code below assumes that no format use more than two planes, and
+ * that the two planes of multiplane formats need the same number of
+ * bytes per pixel.
+ */
+ if (format->num_planes == 2 && pitch != mode_cmd->pitches[1]) {
+ dev_dbg(dev->dev, "pitches differ between planes 0 and 1\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ if (pitch % format->cpp[0]) {
+ dev_dbg(dev->dev,
+ "buffer pitch (%u bytes) is not a multiple of pixel size (%u bytes)\n",
+ pitch, format->cpp[0]);
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ for (i = 0; i < format->num_planes; i++) {
+ struct plane *plane = &omap_fb->planes[i];
+ unsigned int vsub = i == 0 ? 1 : format->vsub;
+ unsigned int size;
+
+ size = pitch * mode_cmd->height / vsub;
+
+ if (size > omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i]) {
+ dev_dbg(dev->dev,
+ "provided buffer object is too small! %zu < %d\n",
+ bos[i]->size - mode_cmd->offsets[i], size);
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ fb->obj[i] = bos[i];
+ plane->dma_addr = 0;
+ }
+
+ drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
+
+ ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
+ if (ret) {
+ dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
+ goto fail;
+ }
+
+ DBG("create: FB ID: %d (%p)", fb->base.id, fb);
+
+ return fb;
+
+fail:
+ kfree(omap_fb);
+
+ return ERR_PTR(ret);
+}