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path: root/drivers/gpu/drm/shmobile/shmob_drm_plane.c
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Diffstat (limited to 'drivers/gpu/drm/shmobile/shmob_drm_plane.c')
-rw-r--r--drivers/gpu/drm/shmobile/shmob_drm_plane.c263
1 files changed, 263 insertions, 0 deletions
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_plane.c b/drivers/gpu/drm/shmobile/shmob_drm_plane.c
new file mode 100644
index 000000000..1805bb23b
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_plane.c
@@ -0,0 +1,263 @@
+/*
+ * shmob_drm_plane.c -- SH Mobile DRM Planes
+ *
+ * Copyright (C) 2012 Renesas Electronics Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#include <video/sh_mobile_meram.h>
+
+#include "shmob_drm_drv.h"
+#include "shmob_drm_kms.h"
+#include "shmob_drm_plane.h"
+#include "shmob_drm_regs.h"
+
+struct shmob_drm_plane {
+ struct drm_plane plane;
+ unsigned int index;
+ unsigned int alpha;
+
+ const struct shmob_drm_format_info *format;
+ unsigned long dma[2];
+
+ unsigned int src_x;
+ unsigned int src_y;
+ unsigned int crtc_x;
+ unsigned int crtc_y;
+ unsigned int crtc_w;
+ unsigned int crtc_h;
+};
+
+#define to_shmob_plane(p) container_of(p, struct shmob_drm_plane, plane)
+
+static void shmob_drm_plane_compute_base(struct shmob_drm_plane *splane,
+ struct drm_framebuffer *fb,
+ int x, int y)
+{
+ struct drm_gem_cma_object *gem;
+ unsigned int bpp;
+
+ bpp = splane->format->yuv ? 8 : splane->format->bpp;
+ gem = drm_fb_cma_get_gem_obj(fb, 0);
+ splane->dma[0] = gem->paddr + fb->offsets[0]
+ + y * fb->pitches[0] + x * bpp / 8;
+
+ if (splane->format->yuv) {
+ bpp = splane->format->bpp - 8;
+ gem = drm_fb_cma_get_gem_obj(fb, 1);
+ splane->dma[1] = gem->paddr + fb->offsets[1]
+ + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
+ + x * (bpp == 16 ? 2 : 1);
+ }
+}
+
+static void __shmob_drm_plane_setup(struct shmob_drm_plane *splane,
+ struct drm_framebuffer *fb)
+{
+ struct shmob_drm_device *sdev = splane->plane.dev->dev_private;
+ u32 format;
+
+ /* TODO: Support ROP3 mode */
+ format = LDBBSIFR_EN | (splane->alpha << LDBBSIFR_LAY_SHIFT);
+
+ switch (splane->format->fourcc) {
+ case DRM_FORMAT_RGB565:
+ case DRM_FORMAT_NV21:
+ case DRM_FORMAT_NV61:
+ case DRM_FORMAT_NV42:
+ format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW;
+ break;
+ case DRM_FORMAT_RGB888:
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV16:
+ case DRM_FORMAT_NV24:
+ format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB;
+ break;
+ case DRM_FORMAT_ARGB8888:
+ default:
+ format |= LDBBSIFR_SWPL;
+ break;
+ }
+
+ switch (splane->format->fourcc) {
+ case DRM_FORMAT_RGB565:
+ format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16;
+ break;
+ case DRM_FORMAT_RGB888:
+ format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24;
+ break;
+ case DRM_FORMAT_ARGB8888:
+ format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32;
+ break;
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV21:
+ format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420;
+ break;
+ case DRM_FORMAT_NV16:
+ case DRM_FORMAT_NV61:
+ format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422;
+ break;
+ case DRM_FORMAT_NV24:
+ case DRM_FORMAT_NV42:
+ format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444;
+ break;
+ }
+
+#define plane_reg_dump(sdev, splane, reg) \
+ dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x 0x%08x\n", __func__, \
+ splane->index, #reg, \
+ lcdc_read(sdev, reg(splane->index)), \
+ lcdc_read(sdev, reg(splane->index) + LCDC_SIDE_B_OFFSET))
+
+ plane_reg_dump(sdev, splane, LDBnBSIFR);
+ plane_reg_dump(sdev, splane, LDBnBSSZR);
+ plane_reg_dump(sdev, splane, LDBnBLOCR);
+ plane_reg_dump(sdev, splane, LDBnBSMWR);
+ plane_reg_dump(sdev, splane, LDBnBSAYR);
+ plane_reg_dump(sdev, splane, LDBnBSACR);
+
+ lcdc_write(sdev, LDBCR, LDBCR_UPC(splane->index));
+ dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index,
+ "LDBCR", lcdc_read(sdev, LDBCR));
+
+ lcdc_write(sdev, LDBnBSIFR(splane->index), format);
+
+ lcdc_write(sdev, LDBnBSSZR(splane->index),
+ (splane->crtc_h << LDBBSSZR_BVSS_SHIFT) |
+ (splane->crtc_w << LDBBSSZR_BHSS_SHIFT));
+ lcdc_write(sdev, LDBnBLOCR(splane->index),
+ (splane->crtc_y << LDBBLOCR_CVLC_SHIFT) |
+ (splane->crtc_x << LDBBLOCR_CHLC_SHIFT));
+ lcdc_write(sdev, LDBnBSMWR(splane->index),
+ fb->pitches[0] << LDBBSMWR_BSMW_SHIFT);
+
+ shmob_drm_plane_compute_base(splane, fb, splane->src_x, splane->src_y);
+
+ lcdc_write(sdev, LDBnBSAYR(splane->index), splane->dma[0]);
+ if (splane->format->yuv)
+ lcdc_write(sdev, LDBnBSACR(splane->index), splane->dma[1]);
+
+ lcdc_write(sdev, LDBCR,
+ LDBCR_UPF(splane->index) | LDBCR_UPD(splane->index));
+ dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index,
+ "LDBCR", lcdc_read(sdev, LDBCR));
+
+ plane_reg_dump(sdev, splane, LDBnBSIFR);
+ plane_reg_dump(sdev, splane, LDBnBSSZR);
+ plane_reg_dump(sdev, splane, LDBnBLOCR);
+ plane_reg_dump(sdev, splane, LDBnBSMWR);
+ plane_reg_dump(sdev, splane, LDBnBSAYR);
+ plane_reg_dump(sdev, splane, LDBnBSACR);
+}
+
+void shmob_drm_plane_setup(struct drm_plane *plane)
+{
+ struct shmob_drm_plane *splane = to_shmob_plane(plane);
+
+ if (plane->fb == NULL)
+ return;
+
+ __shmob_drm_plane_setup(splane, plane->fb);
+}
+
+static int
+shmob_drm_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
+ struct drm_framebuffer *fb, 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)
+{
+ struct shmob_drm_plane *splane = to_shmob_plane(plane);
+ struct shmob_drm_device *sdev = plane->dev->dev_private;
+ const struct shmob_drm_format_info *format;
+
+ format = shmob_drm_format_info(fb->pixel_format);
+ if (format == NULL) {
+ dev_dbg(sdev->dev, "update_plane: unsupported format %08x\n",
+ fb->pixel_format);
+ return -EINVAL;
+ }
+
+ if (src_w >> 16 != crtc_w || src_h >> 16 != crtc_h) {
+ dev_dbg(sdev->dev, "%s: scaling not supported\n", __func__);
+ return -EINVAL;
+ }
+
+ splane->format = format;
+
+ splane->src_x = src_x >> 16;
+ splane->src_y = src_y >> 16;
+ splane->crtc_x = crtc_x;
+ splane->crtc_y = crtc_y;
+ splane->crtc_w = crtc_w;
+ splane->crtc_h = crtc_h;
+
+ __shmob_drm_plane_setup(splane, fb);
+ return 0;
+}
+
+static int shmob_drm_plane_disable(struct drm_plane *plane)
+{
+ struct shmob_drm_plane *splane = to_shmob_plane(plane);
+ struct shmob_drm_device *sdev = plane->dev->dev_private;
+
+ splane->format = NULL;
+
+ lcdc_write(sdev, LDBnBSIFR(splane->index), 0);
+ return 0;
+}
+
+static void shmob_drm_plane_destroy(struct drm_plane *plane)
+{
+ shmob_drm_plane_disable(plane);
+ drm_plane_cleanup(plane);
+}
+
+static const struct drm_plane_funcs shmob_drm_plane_funcs = {
+ .update_plane = shmob_drm_plane_update,
+ .disable_plane = shmob_drm_plane_disable,
+ .destroy = shmob_drm_plane_destroy,
+};
+
+static const uint32_t formats[] = {
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_ARGB8888,
+ DRM_FORMAT_NV12,
+ DRM_FORMAT_NV21,
+ DRM_FORMAT_NV16,
+ DRM_FORMAT_NV61,
+ DRM_FORMAT_NV24,
+ DRM_FORMAT_NV42,
+};
+
+int shmob_drm_plane_create(struct shmob_drm_device *sdev, unsigned int index)
+{
+ struct shmob_drm_plane *splane;
+ int ret;
+
+ splane = devm_kzalloc(sdev->dev, sizeof(*splane), GFP_KERNEL);
+ if (splane == NULL)
+ return -ENOMEM;
+
+ splane->index = index;
+ splane->alpha = 255;
+
+ ret = drm_plane_init(sdev->ddev, &splane->plane, 1,
+ &shmob_drm_plane_funcs, formats,
+ ARRAY_SIZE(formats), false);
+
+ return ret;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 13:55:53 +0000