Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 458 insertions, 0 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c b/drivers/gpu/drm/omapdrm/omap_fb.c
new file mode 100644
index 0000000000..1d414b33fe
--- /dev/null
+++ b/drivers/gpu/drm/omapdrm/omap_fb.c
@@ -0,0 +1,458 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
+ * Author: Rob Clark <rob@ti.com>
+ */
+
+#include <linux/dma-mapping.h>
+
+#include <drm/drm_blend.h>
+#include <drm/drm_modeset_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_framebuffer.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_MASK;
+}
+
+/* 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_overlay_info *r_info)
+{
+	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
+	const struct drm_format_info *format = omap_fb->format;
+	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_MASK) {
+		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) {
+		if (info->rotation_type == OMAP_DSS_ROT_TILER) {
+			WARN_ON(!(omap_gem_flags(fb->obj[1]) & OMAP_BO_TILED_MASK));
+			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;
+	}
+
+	if (r_info) {
+		info->width /= 2;
+		info->out_width /= 2;
+
+		*r_info = *info;
+
+		if (fb->format->is_yuv) {
+			if (info->width & 1) {
+				info->width++;
+				r_info->width--;
+			}
+
+			if (info->out_width & 1) {
+				info->out_width++;
+				r_info->out_width--;
+			}
+		}
+
+		r_info->pos_x = info->pos_x + info->out_width;
+
+		r_info->paddr =	get_linear_addr(fb, format, 0,
+						x + info->width, y);
+		if (fb->format->format == DRM_FORMAT_NV12) {
+			r_info->p_uv_addr =
+				get_linear_addr(fb, format, 1,
+						x + info->width, y);
+		}
+	}
+}
+
+/* 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(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);
+}