--- /dev/null
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * 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 <linux/regmap.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.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 <drm/drm_plane_helper.h>
+
+#include "fsl_dcu_drm_drv.h"
+#include "fsl_dcu_drm_plane.h"
+
+static int fsl_dcu_drm_plane_index(struct drm_plane *plane)
+{
+ struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
+ unsigned int total_layer = fsl_dev->soc->total_layer;
+ unsigned int index;
+
+ index = drm_plane_index(plane);
+ if (index < total_layer)
+ return total_layer - index - 1;
+
+ dev_err(fsl_dev->dev, "No more layer left\n");
+ return -EINVAL;
+}
+
+static int fsl_dcu_drm_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct drm_framebuffer *fb = state->fb;
+
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_RGB565:
+ case DRM_FORMAT_RGB888:
+ case DRM_FORMAT_ARGB8888:
+ case DRM_FORMAT_BGRA4444:
+ case DRM_FORMAT_ARGB1555:
+ case DRM_FORMAT_YUV422:
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static void fsl_dcu_drm_plane_atomic_disable(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
+ unsigned int value;
+ int index, ret;
+
+ index = fsl_dcu_drm_plane_index(plane);
+ if (index < 0)
+ return;
+
+ ret = regmap_read(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), &value);
+ if (ret)
+ dev_err(fsl_dev->dev, "read DCU_INT_MASK failed\n");
+ value &= ~DCU_LAYER_EN;
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), value);
+ if (ret)
+ dev_err(fsl_dev->dev, "set DCU register failed\n");
+}
+
+static void fsl_dcu_drm_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+
+{
+ struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
+ struct drm_plane_state *state = plane->state;
+ struct drm_framebuffer *fb = plane->state->fb;
+ struct drm_gem_cma_object *gem;
+ unsigned int alpha, bpp;
+ int index, ret;
+
+ if (!fb)
+ return;
+
+ index = fsl_dcu_drm_plane_index(plane);
+ if (index < 0)
+ return;
+
+ gem = drm_fb_cma_get_gem_obj(fb, 0);
+
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_RGB565:
+ bpp = FSL_DCU_RGB565;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_RGB888:
+ bpp = FSL_DCU_RGB888;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_ARGB8888:
+ bpp = FSL_DCU_ARGB8888;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_BGRA4444:
+ bpp = FSL_DCU_ARGB4444;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_ARGB1555:
+ bpp = FSL_DCU_ARGB1555;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_YUV422:
+ bpp = FSL_DCU_YUV422;
+ alpha = 0xff;
+ break;
+ default:
+ return;
+ }
+
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 1),
+ DCU_LAYER_HEIGHT(state->crtc_h) |
+ DCU_LAYER_WIDTH(state->crtc_w));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 2),
+ DCU_LAYER_POSY(state->crtc_y) |
+ DCU_LAYER_POSX(state->crtc_x));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap,
+ DCU_CTRLDESCLN(index, 3), gem->paddr);
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4),
+ DCU_LAYER_EN |
+ DCU_LAYER_TRANS(alpha) |
+ DCU_LAYER_BPP(bpp) |
+ DCU_LAYER_AB(0));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 5),
+ DCU_LAYER_CKMAX_R(0xFF) |
+ DCU_LAYER_CKMAX_G(0xFF) |
+ DCU_LAYER_CKMAX_B(0xFF));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 6),
+ DCU_LAYER_CKMIN_R(0) |
+ DCU_LAYER_CKMIN_G(0) |
+ DCU_LAYER_CKMIN_B(0));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 7), 0);
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 8),
+ DCU_LAYER_FG_FCOLOR(0));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 9),
+ DCU_LAYER_BG_BCOLOR(0));
+ if (ret)
+ goto set_failed;
+ if (!strcmp(fsl_dev->soc->name, "ls1021a")) {
+ ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 10),
+ DCU_LAYER_POST_SKIP(0) |
+ DCU_LAYER_PRE_SKIP(0));
+ if (ret)
+ goto set_failed;
+ }
+ ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
+ DCU_MODE_DCU_MODE_MASK,
+ DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap,
+ DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG);
+ if (ret)
+ goto set_failed;
+ return;
+
+set_failed:
+ dev_err(fsl_dev->dev, "set DCU register failed\n");
+}
+
+static void
+fsl_dcu_drm_plane_cleanup_fb(struct drm_plane *plane,
+ const struct drm_plane_state *new_state)
+{
+}
+
+static int
+fsl_dcu_drm_plane_prepare_fb(struct drm_plane *plane,
+ const struct drm_plane_state *new_state)
+{
+ return 0;
+}
+
+static const struct drm_plane_helper_funcs fsl_dcu_drm_plane_helper_funcs = {
+ .atomic_check = fsl_dcu_drm_plane_atomic_check,
+ .atomic_disable = fsl_dcu_drm_plane_atomic_disable,
+ .atomic_update = fsl_dcu_drm_plane_atomic_update,
+ .cleanup_fb = fsl_dcu_drm_plane_cleanup_fb,
+ .prepare_fb = fsl_dcu_drm_plane_prepare_fb,
+};
+
+static void fsl_dcu_drm_plane_destroy(struct drm_plane *plane)
+{
+ drm_plane_cleanup(plane);
+}
+
+static const struct drm_plane_funcs fsl_dcu_drm_plane_funcs = {
+ .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .destroy = fsl_dcu_drm_plane_destroy,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .reset = drm_atomic_helper_plane_reset,
+ .update_plane = drm_atomic_helper_update_plane,
+};
+
+static const u32 fsl_dcu_drm_plane_formats[] = {
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_ARGB8888,
+ DRM_FORMAT_ARGB4444,
+ DRM_FORMAT_ARGB1555,
+ DRM_FORMAT_YUV422,
+};
+
+struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev)
+{
+ struct drm_plane *primary;
+ int ret;
+
+ primary = kzalloc(sizeof(*primary), GFP_KERNEL);
+ if (!primary) {
+ DRM_DEBUG_KMS("Failed to allocate primary plane\n");
+ return NULL;
+ }
+
+ /* possible_crtc's will be filled in later by crtc_init */
+ ret = drm_universal_plane_init(dev, primary, 0,
+ &fsl_dcu_drm_plane_funcs,
+ fsl_dcu_drm_plane_formats,
+ ARRAY_SIZE(fsl_dcu_drm_plane_formats),
+ DRM_PLANE_TYPE_PRIMARY);
+ if (ret) {
+ kfree(primary);
+ primary = NULL;
+ }
+ drm_plane_helper_add(primary, &fsl_dcu_drm_plane_helper_funcs);
+
+ return primary;
+}
Code Review / kvmfornfv.git / blobdiff