// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/ * Author: Tomi Valkeinen */ #include #include #include #include #include #include #include "tidss_crtc.h" #include "tidss_dispc.h" #include "tidss_drv.h" #include "tidss_plane.h" /* drm_plane_helper_funcs */ static int tidss_plane_atomic_check(struct drm_plane *plane, struct drm_plane_state *state) { struct drm_device *ddev = plane->dev; struct tidss_device *tidss = to_tidss(ddev); struct tidss_plane *tplane = to_tidss_plane(plane); const struct drm_format_info *finfo; struct drm_crtc_state *crtc_state; u32 hw_plane = tplane->hw_plane_id; u32 hw_videoport; int ret; dev_dbg(ddev->dev, "%s\n", __func__); if (!state->crtc) { /* * The visible field is not reset by the DRM core but only * updated by drm_plane_helper_check_state(), set it manually. */ state->visible = false; return 0; } crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); if (IS_ERR(crtc_state)) return PTR_ERR(crtc_state); ret = drm_atomic_helper_check_plane_state(state, crtc_state, 0, INT_MAX, true, true); if (ret < 0) return ret; /* * The HW is only able to start drawing at subpixel boundary * (the two first checks bellow). At the end of a row the HW * can only jump integer number of subpixels forward to the * beginning of the next row. So we can only show picture with * integer subpixel width (the third check). However, after * reaching the end of the drawn picture the drawing starts * again at the absolute memory address where top left corner * position of the drawn picture is (so there is no need to * check for odd height). */ finfo = drm_format_info(state->fb->format->format); if ((state->src_x >> 16) % finfo->hsub != 0) { dev_dbg(ddev->dev, "%s: x-position %u not divisible subpixel size %u\n", __func__, (state->src_x >> 16), finfo->hsub); return -EINVAL; } if ((state->src_y >> 16) % finfo->vsub != 0) { dev_dbg(ddev->dev, "%s: y-position %u not divisible subpixel size %u\n", __func__, (state->src_y >> 16), finfo->vsub); return -EINVAL; } if ((state->src_w >> 16) % finfo->hsub != 0) { dev_dbg(ddev->dev, "%s: src width %u not divisible by subpixel size %u\n", __func__, (state->src_w >> 16), finfo->hsub); return -EINVAL; } if (!state->visible) return 0; hw_videoport = to_tidss_crtc(state->crtc)->hw_videoport; ret = dispc_plane_check(tidss->dispc, hw_plane, state, hw_videoport); if (ret) return ret; return 0; } static void tidss_plane_atomic_update(struct drm_plane *plane, struct drm_plane_state *old_state) { struct drm_device *ddev = plane->dev; struct tidss_device *tidss = to_tidss(ddev); struct tidss_plane *tplane = to_tidss_plane(plane); struct drm_plane_state *state = plane->state; u32 hw_videoport; int ret; dev_dbg(ddev->dev, "%s\n", __func__); if (!state->visible) { dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, false); return; } hw_videoport = to_tidss_crtc(state->crtc)->hw_videoport; ret = dispc_plane_setup(tidss->dispc, tplane->hw_plane_id, state, hw_videoport); if (ret) { dev_err(plane->dev->dev, "%s: Failed to setup plane %d\n", __func__, tplane->hw_plane_id); dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, false); return; } dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, true); } static void tidss_plane_atomic_disable(struct drm_plane *plane, struct drm_plane_state *old_state) { struct drm_device *ddev = plane->dev; struct tidss_device *tidss = to_tidss(ddev); struct tidss_plane *tplane = to_tidss_plane(plane); dev_dbg(ddev->dev, "%s\n", __func__); dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, false); } static void drm_plane_destroy(struct drm_plane *plane) { struct tidss_plane *tplane = to_tidss_plane(plane); drm_plane_cleanup(plane); kfree(tplane); } static const struct drm_plane_helper_funcs tidss_plane_helper_funcs = { .atomic_check = tidss_plane_atomic_check, .atomic_update = tidss_plane_atomic_update, .atomic_disable = tidss_plane_atomic_disable, }; static const struct drm_plane_funcs tidss_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .reset = drm_atomic_helper_plane_reset, .destroy = drm_plane_destroy, .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, }; struct tidss_plane *tidss_plane_create(struct tidss_device *tidss, u32 hw_plane_id, u32 plane_type, u32 crtc_mask, const u32 *formats, u32 num_formats) { struct tidss_plane *tplane; enum drm_plane_type type; u32 possible_crtcs; u32 num_planes = tidss->feat->num_planes; u32 color_encodings = (BIT(DRM_COLOR_YCBCR_BT601) | BIT(DRM_COLOR_YCBCR_BT709)); u32 color_ranges = (BIT(DRM_COLOR_YCBCR_FULL_RANGE) | BIT(DRM_COLOR_YCBCR_LIMITED_RANGE)); u32 default_encoding = DRM_COLOR_YCBCR_BT601; u32 default_range = DRM_COLOR_YCBCR_FULL_RANGE; u32 blend_modes = (BIT(DRM_MODE_BLEND_PREMULTI) | BIT(DRM_MODE_BLEND_COVERAGE)); int ret; tplane = kzalloc(sizeof(*tplane), GFP_KERNEL); if (!tplane) return ERR_PTR(-ENOMEM); tplane->hw_plane_id = hw_plane_id; possible_crtcs = crtc_mask; type = plane_type; ret = drm_universal_plane_init(&tidss->ddev, &tplane->plane, possible_crtcs, &tidss_plane_funcs, formats, num_formats, NULL, type, NULL); if (ret < 0) goto err; drm_plane_helper_add(&tplane->plane, &tidss_plane_helper_funcs); drm_plane_create_zpos_property(&tplane->plane, tidss->num_planes, 0, num_planes - 1); ret = drm_plane_create_color_properties(&tplane->plane, color_encodings, color_ranges, default_encoding, default_range); if (ret) goto err; ret = drm_plane_create_alpha_property(&tplane->plane); if (ret) goto err; ret = drm_plane_create_blend_mode_property(&tplane->plane, blend_modes); if (ret) goto err; return tplane; err: kfree(tplane); return ERR_PTR(ret); }