// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2015 Freescale Semiconductor, Inc. * * Freescale DCU drm device driver */ #include #include #include #include #include #include #include #include #include #include #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_atomic_state *state) { struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane); struct drm_framebuffer *fb = new_plane_state->fb; if (!new_plane_state->fb || !new_plane_state->crtc) return 0; switch (fb->format->format) { case DRM_FORMAT_RGB565: case DRM_FORMAT_RGB888: case DRM_FORMAT_XRGB8888: case DRM_FORMAT_ARGB8888: case DRM_FORMAT_XRGB4444: case DRM_FORMAT_ARGB4444: case DRM_FORMAT_XRGB1555: 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_atomic_state *state) { struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private; unsigned int value; int index; index = fsl_dcu_drm_plane_index(plane); if (index < 0) return; regmap_read(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), &value); value &= ~DCU_LAYER_EN; regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), value); } static void fsl_dcu_drm_plane_atomic_update(struct drm_plane *plane, struct drm_atomic_state *state) { struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private; struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); struct drm_framebuffer *fb = plane->state->fb; struct drm_gem_cma_object *gem; unsigned int alpha = DCU_LAYER_AB_NONE, bpp; int index; 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->format->format) { case DRM_FORMAT_RGB565: bpp = FSL_DCU_RGB565; break; case DRM_FORMAT_RGB888: bpp = FSL_DCU_RGB888; break; case DRM_FORMAT_ARGB8888: alpha = DCU_LAYER_AB_WHOLE_FRAME; fallthrough; case DRM_FORMAT_XRGB8888: bpp = FSL_DCU_ARGB8888; break; case DRM_FORMAT_ARGB4444: alpha = DCU_LAYER_AB_WHOLE_FRAME; fallthrough; case DRM_FORMAT_XRGB4444: bpp = FSL_DCU_ARGB4444; break; case DRM_FORMAT_ARGB1555: alpha = DCU_LAYER_AB_WHOLE_FRAME; fallthrough; case DRM_FORMAT_XRGB1555: bpp = FSL_DCU_ARGB1555; break; case DRM_FORMAT_YUV422: bpp = FSL_DCU_YUV422; break; default: return; } regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 1), DCU_LAYER_HEIGHT(new_state->crtc_h) | DCU_LAYER_WIDTH(new_state->crtc_w)); regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 2), DCU_LAYER_POSY(new_state->crtc_y) | DCU_LAYER_POSX(new_state->crtc_x)); regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 3), gem->paddr); regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), DCU_LAYER_EN | DCU_LAYER_TRANS(0xff) | DCU_LAYER_BPP(bpp) | alpha); regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 5), DCU_LAYER_CKMAX_R(0xFF) | DCU_LAYER_CKMAX_G(0xFF) | DCU_LAYER_CKMAX_B(0xFF)); regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 6), DCU_LAYER_CKMIN_R(0) | DCU_LAYER_CKMIN_G(0) | DCU_LAYER_CKMIN_B(0)); regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 7), 0); regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 8), DCU_LAYER_FG_FCOLOR(0)); regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 9), DCU_LAYER_BG_BCOLOR(0)); if (!strcmp(fsl_dev->soc->name, "ls1021a")) { regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 10), DCU_LAYER_POST_SKIP(0) | DCU_LAYER_PRE_SKIP(0)); } return; } 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, }; 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 = drm_plane_helper_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_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB4444, DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555, DRM_FORMAT_ARGB1555, DRM_FORMAT_YUV422, }; void fsl_dcu_drm_init_planes(struct drm_device *dev) { struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; int i, j; for (i = 0; i < fsl_dev->soc->total_layer; i++) { for (j = 1; j <= fsl_dev->soc->layer_regs; j++) regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(i, j), 0); } } 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), NULL, DRM_PLANE_TYPE_PRIMARY, NULL); if (ret) { kfree(primary); primary = NULL; } drm_plane_helper_add(primary, &fsl_dcu_drm_plane_helper_funcs); return primary; }