/* * Copyright (C) 2012 Avionic Design GmbH * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include "dc.h" #include "drm.h" #include "gem.h" #include #include #include struct tegra_dc_soc_info { bool supports_border_color; bool supports_interlacing; bool supports_cursor; bool supports_block_linear; unsigned int pitch_align; bool has_powergate; }; struct tegra_plane { struct drm_plane base; unsigned int index; }; static inline struct tegra_plane *to_tegra_plane(struct drm_plane *plane) { return container_of(plane, struct tegra_plane, base); } struct tegra_dc_state { struct drm_crtc_state base; struct clk *clk; unsigned long pclk; unsigned int div; u32 planes; }; static inline struct tegra_dc_state *to_dc_state(struct drm_crtc_state *state) { if (state) return container_of(state, struct tegra_dc_state, base); return NULL; } /* * Reads the active copy of a register. This takes the dc->lock spinlock to * prevent races with the VBLANK processing which also needs access to the * active copy of some registers. */ static u32 tegra_dc_readl_active(struct tegra_dc *dc, unsigned long offset) { unsigned long flags; u32 value; spin_lock_irqsave(&dc->lock, flags); tegra_dc_writel(dc, READ_MUX, DC_CMD_STATE_ACCESS); value = tegra_dc_readl(dc, offset); tegra_dc_writel(dc, 0, DC_CMD_STATE_ACCESS); spin_unlock_irqrestore(&dc->lock, flags); return value; } /* * Double-buffered registers have two copies: ASSEMBLY and ACTIVE. When the * *_ACT_REQ bits are set the ASSEMBLY copy is latched into the ACTIVE copy. * Latching happens mmediately if the display controller is in STOP mode or * on the next frame boundary otherwise. * * Triple-buffered registers have three copies: ASSEMBLY, ARM and ACTIVE. The * ASSEMBLY copy is latched into the ARM copy immediately after *_UPDATE bits * are written. When the *_ACT_REQ bits are written, the ARM copy is latched * into the ACTIVE copy, either immediately if the display controller is in * STOP mode, or at the next frame boundary otherwise. */ void tegra_dc_commit(struct tegra_dc *dc) { tegra_dc_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL); tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL); } static unsigned int tegra_dc_format(uint32_t format, uint32_t *swap) { /* assume no swapping of fetched data */ if (swap) *swap = BYTE_SWAP_NOSWAP; switch (format) { case DRM_FORMAT_XBGR8888: return WIN_COLOR_DEPTH_R8G8B8A8; case DRM_FORMAT_XRGB8888: return WIN_COLOR_DEPTH_B8G8R8A8; case DRM_FORMAT_RGB565: return WIN_COLOR_DEPTH_B5G6R5; case DRM_FORMAT_UYVY: return WIN_COLOR_DEPTH_YCbCr422; case DRM_FORMAT_YUYV: if (swap) *swap = BYTE_SWAP_SWAP2; return WIN_COLOR_DEPTH_YCbCr422; case DRM_FORMAT_YUV420: return WIN_COLOR_DEPTH_YCbCr420P; case DRM_FORMAT_YUV422: return WIN_COLOR_DEPTH_YCbCr422P; default: break; } WARN(1, "unsupported pixel format %u, using default\n", format); return WIN_COLOR_DEPTH_B8G8R8A8; } static bool tegra_dc_format_is_yuv(unsigned int format, bool *planar) { switch (format) { case WIN_COLOR_DEPTH_YCbCr422: case WIN_COLOR_DEPTH_YUV422: if (planar) *planar = false; return true; case WIN_COLOR_DEPTH_YCbCr420P: case WIN_COLOR_DEPTH_YUV420P: case WIN_COLOR_DEPTH_YCbCr422P: case WIN_COLOR_DEPTH_YUV422P: case WIN_COLOR_DEPTH_YCbCr422R: case WIN_COLOR_DEPTH_YUV422R: case WIN_COLOR_DEPTH_YCbCr422RA: case WIN_COLOR_DEPTH_YUV422RA: if (planar) *planar = true; return true; } if (planar) *planar = false; return false; } static inline u32 compute_dda_inc(unsigned int in, unsigned int out, bool v, unsigned int bpp) { fixed20_12 outf = dfixed_init(out); fixed20_12 inf = dfixed_init(in); u32 dda_inc; int max; if (v) max = 15; else { switch (bpp) { case 2: max = 8; break; default: WARN_ON_ONCE(1); /* fallthrough */ case 4: max = 4; break; } } outf.full = max_t(u32, outf.full - dfixed_const(1), dfixed_const(1)); inf.full -= dfixed_const(1); dda_inc = dfixed_div(inf, outf); dda_inc = min_t(u32, dda_inc, dfixed_const(max)); return dda_inc; } static inline u32 compute_initial_dda(unsigned int in) { fixed20_12 inf = dfixed_init(in); return dfixed_frac(inf); } static void tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index, const struct tegra_dc_window *window) { unsigned h_offset, v_offset, h_size, v_size, h_dda, v_dda, bpp; unsigned long value, flags; bool yuv, planar; /* * For YUV planar modes, the number of bytes per pixel takes into * account only the luma component and therefore is 1. */ yuv = tegra_dc_format_is_yuv(window->format, &planar); if (!yuv) bpp = window->bits_per_pixel / 8; else bpp = planar ? 1 : 2; spin_lock_irqsave(&dc->lock, flags); value = WINDOW_A_SELECT << index; tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER); tegra_dc_writel(dc, window->format, DC_WIN_COLOR_DEPTH); tegra_dc_writel(dc, window->swap, DC_WIN_BYTE_SWAP); value = V_POSITION(window->dst.y) | H_POSITION(window->dst.x); tegra_dc_writel(dc, value, DC_WIN_POSITION); value = V_SIZE(window->dst.h) | H_SIZE(window->dst.w); tegra_dc_writel(dc, value, DC_WIN_SIZE); h_offset = window->src.x * bpp; v_offset = window->src.y; h_size = window->src.w * bpp; v_size = window->src.h; value = V_PRESCALED_SIZE(v_size) | H_PRESCALED_SIZE(h_size); tegra_dc_writel(dc, value, DC_WIN_PRESCALED_SIZE); /* * For DDA computations the number of bytes per pixel for YUV planar * modes needs to take into account all Y, U and V components. */ if (yuv && planar) bpp = 2; h_dda = compute_dda_inc(window->src.w, window->dst.w, false, bpp); v_dda = compute_dda_inc(window->src.h, window->dst.h, true, bpp); value = V_DDA_INC(v_dda) | H_DDA_INC(h_dda); tegra_dc_writel(dc, value, DC_WIN_DDA_INC); h_dda = compute_initial_dda(window->src.x); v_dda = compute_initial_dda(window->src.y); tegra_dc_writel(dc, h_dda, DC_WIN_H_INITIAL_DDA); tegra_dc_writel(dc, v_dda, DC_WIN_V_INITIAL_DDA); tegra_dc_writel(dc, 0, DC_WIN_UV_BUF_STRIDE); tegra_dc_writel(dc, 0, DC_WIN_BUF_STRIDE); tegra_dc_writel(dc, window->base[0], DC_WINBUF_START_ADDR); if (yuv && planar) { tegra_dc_writel(dc, window->base[1], DC_WINBUF_START_ADDR_U); tegra_dc_writel(dc, window->base[2], DC_WINBUF_START_ADDR_V); value = window->stride[1] << 16 | window->stride[0]; tegra_dc_writel(dc, value, DC_WIN_LINE_STRIDE); } else { tegra_dc_writel(dc, window->stride[0], DC_WIN_LINE_STRIDE); } if (window->bottom_up) v_offset += window->src.h - 1; tegra_dc_writel(dc, h_offset, DC_WINBUF_ADDR_H_OFFSET); tegra_dc_writel(dc, v_offset, DC_WINBUF_ADDR_V_OFFSET); if (dc->soc->supports_block_linear) { unsigned long height = window->tiling.value; switch (window->tiling.mode) { case TEGRA_BO_TILING_MODE_PITCH: value = DC_WINBUF_SURFACE_KIND_PITCH; break; case TEGRA_BO_TILING_MODE_TILED: value = DC_WINBUF_SURFACE_KIND_TILED; break; case TEGRA_BO_TILING_MODE_BLOCK: value = DC_WINBUF_SURFACE_KIND_BLOCK_HEIGHT(height) | DC_WINBUF_SURFACE_KIND_BLOCK; break; } tegra_dc_writel(dc, value, DC_WINBUF_SURFACE_KIND); } else { switch (window->tiling.mode) { case TEGRA_BO_TILING_MODE_PITCH: value = DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV | DC_WIN_BUFFER_ADDR_MODE_LINEAR; break; case TEGRA_BO_TILING_MODE_TILED: value = DC_WIN_BUFFER_ADDR_MODE_TILE_UV | DC_WIN_BUFFER_ADDR_MODE_TILE; break; case TEGRA_BO_TILING_MODE_BLOCK: /* * No need to handle this here because ->atomic_check * will already have filtered it out. */ break; } tegra_dc_writel(dc, value, DC_WIN_BUFFER_ADDR_MODE); } value = WIN_ENABLE; if (yuv) { /* setup default colorspace conversion coefficients */ tegra_dc_writel(dc, 0x00f0, DC_WIN_CSC_YOF); tegra_dc_writel(dc, 0x012a, DC_WIN_CSC_KYRGB); tegra_dc_writel(dc, 0x0000, DC_WIN_CSC_KUR); tegra_dc_writel(dc, 0x0198, DC_WIN_CSC_KVR); tegra_dc_writel(dc, 0x039b, DC_WIN_CSC_KUG); tegra_dc_writel(dc, 0x032f, DC_WIN_CSC_KVG); tegra_dc_writel(dc, 0x0204, DC_WIN_CSC_KUB); tegra_dc_writel(dc, 0x0000, DC_WIN_CSC_KVB); value |= CSC_ENABLE; } else if (window->bits_per_pixel < 24) { value |= COLOR_EXPAND; } if (window->bottom_up) value |= V_DIRECTION; tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS); /* * Disable blending and assume Window A is the bottom-most window, * Window C is the top-most window and Window B is in the middle. */ tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_NOKEY); tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_1WIN); switch (index) { case 0: tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_X); tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_Y); tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_3WIN_XY); break; case 1: tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_X); tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_Y); tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_3WIN_XY); break; case 2: tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_X); tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_Y); tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_3WIN_XY); break; } spin_unlock_irqrestore(&dc->lock, flags); } static void tegra_plane_destroy(struct drm_plane *plane) { struct tegra_plane *p = to_tegra_plane(plane); drm_plane_cleanup(plane); kfree(p); } static const u32 tegra_primary_plane_formats[] = { DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB565, }; static void tegra_primary_plane_destroy(struct drm_plane *plane) { tegra_plane_destroy(plane); } static const struct drm_plane_funcs tegra_primary_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = tegra_primary_plane_destroy, .reset = drm_atomic_helper_plane_reset, .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, }; static int tegra_plane_prepare_fb(struct drm_plane *plane, struct drm_framebuffer *fb) { return 0; } static void tegra_plane_cleanup_fb(struct drm_plane *plane, struct drm_framebuffer *fb) { } static int tegra_plane_state_add(struct tegra_plane *plane, struct drm_plane_state *state) { struct drm_crtc_state *crtc_state; struct tegra_dc_state *tegra; /* Propagate errors from allocation or locking failures. */ crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); if (IS_ERR(crtc_state)) return PTR_ERR(crtc_state); tegra = to_dc_state(crtc_state); tegra->planes |= WIN_A_ACT_REQ << plane->index; return 0; } static int tegra_plane_atomic_check(struct drm_plane *plane, struct drm_plane_state *state) { struct tegra_plane *tegra = to_tegra_plane(plane); struct tegra_dc *dc = to_tegra_dc(state->crtc); struct tegra_bo_tiling tiling; int err; /* no need for further checks if the plane is being disabled */ if (!state->crtc) return 0; err = tegra_fb_get_tiling(state->fb, &tiling); if (err < 0) return err; if (tiling.mode == TEGRA_BO_TILING_MODE_BLOCK && !dc->soc->supports_block_linear) { DRM_ERROR("hardware doesn't support block linear mode\n"); return -EINVAL; } /* * Tegra doesn't support different strides for U and V planes so we * error out if the user tries to display a framebuffer with such a * configuration. */ if (drm_format_num_planes(state->fb->pixel_format) > 2) { if (state->fb->pitches[2] != state->fb->pitches[1]) { DRM_ERROR("unsupported UV-plane configuration\n"); return -EINVAL; } } err = tegra_plane_state_add(tegra, state); if (err < 0) return err; return 0; } static void tegra_plane_atomic_update(struct drm_plane *plane, struct drm_plane_state *old_state) { struct tegra_dc *dc = to_tegra_dc(plane->state->crtc); struct drm_framebuffer *fb = plane->state->fb; struct tegra_plane *p = to_tegra_plane(plane); struct tegra_dc_window window; unsigned int i; int err; /* rien ne va plus */ if (!plane->state->crtc || !plane->state->fb) return; memset(&window, 0, sizeof(window)); window.src.x = plane->state->src_x >> 16; window.src.y = plane->state->src_y >> 16; window.src.w = plane->state->src_w >> 16; window.src.h = plane->state->src_h >> 16; window.dst.x = plane->state->crtc_x; window.dst.y = plane->state->crtc_y; window.dst.w = plane->state->crtc_w; window.dst.h = plane->state->crtc_h; window.format = tegra_dc_format(fb->pixel_format, &window.swap); window.bits_per_pixel = fb->bits_per_pixel; window.bottom_up = tegra_fb_is_bottom_up(fb); err = tegra_fb_get_tiling(fb, &window.tiling); WARN_ON(err < 0); for (i = 0; i < drm_format_num_planes(fb->pixel_format); i++) { struct tegra_bo *bo = tegra_fb_get_plane(fb, i); window.base[i] = bo->paddr + fb->offsets[i]; window.stride[i] = fb->pitches[i]; } tegra_dc_setup_window(dc, p->index, &window); } static void tegra_plane_atomic_disable(struct drm_plane *plane, struct drm_plane_state *old_state) { struct tegra_plane *p = to_tegra_plane(plane); struct tegra_dc *dc; unsigned long flags; u32 value; /* rien ne va plus */ if (!old_state || !old_state->crtc) return; dc = to_tegra_dc(old_state->crtc); spin_lock_irqsave(&dc->lock, flags); value = WINDOW_A_SELECT << p->index; tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER); value = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS); value &= ~WIN_ENABLE; tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS); spin_unlock_irqrestore(&dc->lock, flags); } static const struct drm_plane_helper_funcs tegra_primary_plane_helper_funcs = { .prepare_fb = tegra_plane_prepare_fb, .cleanup_fb = tegra_plane_cleanup_fb, .atomic_check = tegra_plane_atomic_check, .atomic_update = tegra_plane_atomic_update, .atomic_disable = tegra_plane_atomic_disable, }; static struct drm_plane *tegra_dc_primary_plane_create(struct drm_device *drm, struct tegra_dc *dc) { /* * Ideally this would use drm_crtc_mask(), but that would require the * CRTC to already be in the mode_config's list of CRTCs. However, it * will only be added to that list in the drm_crtc_init_with_planes() * (in tegra_dc_init()), which in turn requires registration of these * planes. So we have ourselves a nice little chicken and egg problem * here. * * We work around this by manually creating the mask from the number * of CRTCs that have been registered, and should therefore always be * the same as drm_crtc_index() after registration. */ unsigned long possible_crtcs = 1 << drm->mode_config.num_crtc; struct tegra_plane *plane; unsigned int num_formats; const u32 *formats; int err; plane = kzalloc(sizeof(*plane), GFP_KERNEL); if (!plane) return ERR_PTR(-ENOMEM); num_formats = ARRAY_SIZE(tegra_primary_plane_formats); formats = tegra_primary_plane_formats; err = drm_universal_plane_init(drm, &plane->base, possible_crtcs, &tegra_primary_plane_funcs, formats, num_formats, DRM_PLANE_TYPE_PRIMARY); if (err < 0) { kfree(plane); return ERR_PTR(err); } drm_plane_helper_add(&plane->base, &tegra_primary_plane_helper_funcs); return &plane->base; } static const u32 tegra_cursor_plane_formats[] = { DRM_FORMAT_RGBA8888, }; static int tegra_cursor_atomic_check(struct drm_plane *plane, struct drm_plane_state *state) { struct tegra_plane *tegra = to_tegra_plane(plane); int err; /* no need for further checks if the plane is being disabled */ if (!state->crtc) return 0; /* scaling not supported for cursor */ if ((state->src_w >> 16 != state->crtc_w) || (state->src_h >> 16 != state->crtc_h)) return -EINVAL; /* only square cursors supported */ if (state->src_w != state->src_h) return -EINVAL; if (state->crtc_w != 32 && state->crtc_w != 64 && state->crtc_w != 128 && state->crtc_w != 256) return -EINVAL; err = tegra_plane_state_add(tegra, state); if (err < 0) return err; return 0; } static void tegra_cursor_atomic_update(struct drm_plane *plane, struct drm_plane_state *old_state) { struct tegra_bo *bo = tegra_fb_get_plane(plane->state->fb, 0); struct tegra_dc *dc = to_tegra_dc(plane->state->crtc); struct drm_plane_state *state = plane->state; u32 value = CURSOR_CLIP_DISPLAY; /* rien ne va plus */ if (!plane->state->crtc || !plane->state->fb) return; switch (state->crtc_w) { case 32: value |= CURSOR_SIZE_32x32; break; case 64: value |= CURSOR_SIZE_64x64; break; case 128: value |= CURSOR_SIZE_128x128; break; case 256: value |= CURSOR_SIZE_256x256; break; default: WARN(1, "cursor size %ux%u not supported\n", state->crtc_w, state->crtc_h); return; } value |= (bo->paddr >> 10) & 0x3fffff; tegra_dc_writel(dc, value, DC_DISP_CURSOR_START_ADDR); #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT value = (bo->paddr >> 32) & 0x3; tegra_dc_writel(dc, value, DC_DISP_CURSOR_START_ADDR_HI); #endif /* enable cursor and set blend mode */ value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); value |= CURSOR_ENABLE; tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); value = tegra_dc_readl(dc, DC_DISP_BLEND_CURSOR_CONTROL); value &= ~CURSOR_DST_BLEND_MASK; value &= ~CURSOR_SRC_BLEND_MASK; value |= CURSOR_MODE_NORMAL; value |= CURSOR_DST_BLEND_NEG_K1_TIMES_SRC; value |= CURSOR_SRC_BLEND_K1_TIMES_SRC; value |= CURSOR_ALPHA; tegra_dc_writel(dc, value, DC_DISP_BLEND_CURSOR_CONTROL); /* position the cursor */ value = (state->crtc_y & 0x3fff) << 16 | (state->crtc_x & 0x3fff); tegra_dc_writel(dc, value, DC_DISP_CURSOR_POSITION); } static void tegra_cursor_atomic_disable(struct drm_plane *plane, struct drm_plane_state *old_state) { struct tegra_dc *dc; u32 value; /* rien ne va plus */ if (!old_state || !old_state->crtc) return; dc = to_tegra_dc(old_state->crtc); value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); value &= ~CURSOR_ENABLE; tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); } static const struct drm_plane_funcs tegra_cursor_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = tegra_plane_destroy, .reset = drm_atomic_helper_plane_reset, .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, }; static const struct drm_plane_helper_funcs tegra_cursor_plane_helper_funcs = { .prepare_fb = tegra_plane_prepare_fb, .cleanup_fb = tegra_plane_cleanup_fb, .atomic_check = tegra_cursor_atomic_check, .atomic_update = tegra_cursor_atomic_update, .atomic_disable = tegra_cursor_atomic_disable, }; static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm, struct tegra_dc *dc) { struct tegra_plane *plane; unsigned int num_formats; const u32 *formats; int err; plane = kzalloc(sizeof(*plane), GFP_KERNEL); if (!plane) return ERR_PTR(-ENOMEM); /* * We'll treat the cursor as an overlay plane with index 6 here so * that the update and activation request bits in DC_CMD_STATE_CONTROL * match up. */ plane->index = 6; num_formats = ARRAY_SIZE(tegra_cursor_plane_formats); formats = tegra_cursor_plane_formats; err = drm_universal_plane_init(drm, &plane->base, 1 << dc->pipe, &tegra_cursor_plane_funcs, formats, num_formats, DRM_PLANE_TYPE_CURSOR); if (err < 0) { kfree(plane); return ERR_PTR(err); } drm_plane_helper_add(&plane->base, &tegra_cursor_plane_helper_funcs); return &plane->base; } static void tegra_overlay_plane_destroy(struct drm_plane *plane) { tegra_plane_destroy(plane); } static const struct drm_plane_funcs tegra_overlay_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = tegra_overlay_plane_destroy, .reset = drm_atomic_helper_plane_reset, .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, }; static const uint32_t tegra_overlay_plane_formats[] = { DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB565, DRM_FORMAT_UYVY, DRM_FORMAT_YUYV, DRM_FORMAT_YUV420, DRM_FORMAT_YUV422, }; static const struct drm_plane_helper_funcs tegra_overlay_plane_helper_funcs = { .prepare_fb = tegra_plane_prepare_fb, .cleanup_fb = tegra_plane_cleanup_fb, .atomic_check = tegra_plane_atomic_check, .atomic_update = tegra_plane_atomic_update, .atomic_disable = tegra_plane_atomic_disable, }; static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm, struct tegra_dc *dc, unsigned int index) { struct tegra_plane *plane; unsigned int num_formats; const u32 *formats; int err; plane = kzalloc(sizeof(*plane), GFP_KERNEL); if (!plane) return ERR_PTR(-ENOMEM); plane->index = index; num_formats = ARRAY_SIZE(tegra_overlay_plane_formats); formats = tegra_overlay_plane_formats; err = drm_universal_plane_init(drm, &plane->base, 1 << dc->pipe, &tegra_overlay_plane_funcs, formats, num_formats, DRM_PLANE_TYPE_OVERLAY); if (err < 0) { kfree(plane); return ERR_PTR(err); } drm_plane_helper_add(&plane->base, &tegra_overlay_plane_helper_funcs); return &plane->base; } static int tegra_dc_add_planes(struct drm_device *drm, struct tegra_dc *dc) { struct drm_plane *plane; unsigned int i; for (i = 0; i < 2; i++) { plane = tegra_dc_overlay_plane_create(drm, dc, 1 + i); if (IS_ERR(plane)) return PTR_ERR(plane); } return 0; } void tegra_dc_enable_vblank(struct tegra_dc *dc) { unsigned long value, flags; spin_lock_irqsave(&dc->lock, flags); value = tegra_dc_readl(dc, DC_CMD_INT_MASK); value |= VBLANK_INT; tegra_dc_writel(dc, value, DC_CMD_INT_MASK); spin_unlock_irqrestore(&dc->lock, flags); } void tegra_dc_disable_vblank(struct tegra_dc *dc) { unsigned long value, flags; spin_lock_irqsave(&dc->lock, flags); value = tegra_dc_readl(dc, DC_CMD_INT_MASK); value &= ~VBLANK_INT; tegra_dc_writel(dc, value, DC_CMD_INT_MASK); spin_unlock_irqrestore(&dc->lock, flags); } static void tegra_dc_finish_page_flip(struct tegra_dc *dc) { struct drm_device *drm = dc->base.dev; struct drm_crtc *crtc = &dc->base; unsigned long flags, base; struct tegra_bo *bo; spin_lock_irqsave(&drm->event_lock, flags); if (!dc->event) { spin_unlock_irqrestore(&drm->event_lock, flags); return; } bo = tegra_fb_get_plane(crtc->primary->fb, 0); spin_lock(&dc->lock); /* check if new start address has been latched */ tegra_dc_writel(dc, WINDOW_A_SELECT, DC_CMD_DISPLAY_WINDOW_HEADER); tegra_dc_writel(dc, READ_MUX, DC_CMD_STATE_ACCESS); base = tegra_dc_readl(dc, DC_WINBUF_START_ADDR); tegra_dc_writel(dc, 0, DC_CMD_STATE_ACCESS); spin_unlock(&dc->lock); if (base == bo->paddr + crtc->primary->fb->offsets[0]) { drm_crtc_send_vblank_event(crtc, dc->event); drm_crtc_vblank_put(crtc); dc->event = NULL; } spin_unlock_irqrestore(&drm->event_lock, flags); } void tegra_dc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file) { struct tegra_dc *dc = to_tegra_dc(crtc); struct drm_device *drm = crtc->dev; unsigned long flags; spin_lock_irqsave(&drm->event_lock, flags); if (dc->event && dc->event->base.file_priv == file) { dc->event->base.destroy(&dc->event->base); drm_crtc_vblank_put(crtc); dc->event = NULL; } spin_unlock_irqrestore(&drm->event_lock, flags); } static void tegra_dc_destroy(struct drm_crtc *crtc) { drm_crtc_cleanup(crtc); } static void tegra_crtc_reset(struct drm_crtc *crtc) { struct tegra_dc_state *state; kfree(crtc->state); crtc->state = NULL; state = kzalloc(sizeof(*state), GFP_KERNEL); if (state) crtc->state = &state->base; } static struct drm_crtc_state * tegra_crtc_atomic_duplicate_state(struct drm_crtc *crtc) { struct tegra_dc_state *state = to_dc_state(crtc->state); struct tegra_dc_state *copy; copy = kmemdup(state, sizeof(*state), GFP_KERNEL); if (!copy) return NULL; copy->base.mode_changed = false; copy->base.planes_changed = false; copy->base.event = NULL; return ©->base; } static void tegra_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_state *state) { kfree(state); } static const struct drm_crtc_funcs tegra_crtc_funcs = { .page_flip = drm_atomic_helper_page_flip, .set_config = drm_atomic_helper_set_config, .destroy = tegra_dc_destroy, .reset = tegra_crtc_reset, .atomic_duplicate_state = tegra_crtc_atomic_duplicate_state, .atomic_destroy_state = tegra_crtc_atomic_destroy_state, }; static void tegra_dc_stop(struct tegra_dc *dc) { u32 value; /* stop the display controller */ value = tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND); value &= ~DISP_CTRL_MODE_MASK; tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND); tegra_dc_commit(dc); } static bool tegra_dc_idle(struct tegra_dc *dc) { u32 value; value = tegra_dc_readl_active(dc, DC_CMD_DISPLAY_COMMAND); return (value & DISP_CTRL_MODE_MASK) == 0; } static int tegra_dc_wait_idle(struct tegra_dc *dc, unsigned long timeout) { timeout = jiffies + msecs_to_jiffies(timeout); while (time_before(jiffies, timeout)) { if (tegra_dc_idle(dc)) return 0; usleep_range(1000, 2000); } dev_dbg(dc->dev, "timeout waiting for DC to become idle\n"); return -ETIMEDOUT; } static void tegra_crtc_disable(struct drm_crtc *crtc) { struct tegra_dc *dc = to_tegra_dc(crtc); u32 value; if (!tegra_dc_idle(dc)) { tegra_dc_stop(dc); /* * Ignore the return value, there isn't anything useful to do * in case this fails. */ tegra_dc_wait_idle(dc, 100); } /* * This should really be part of the RGB encoder driver, but clearing * these bits has the side-effect of stopping the display controller. * When that happens no VBLANK interrupts will be raised. At the same * time the encoder is disabled before the display controller, so the * above code is always going to timeout waiting for the controller * to go idle. * * Given the close coupling between the RGB encoder and the display * controller doing it here is still kind of okay. None of the other * encoder drivers require these bits to be cleared. * * XXX: Perhaps given that the display controller is switched off at * this point anyway maybe clearing these bits isn't even useful for * the RGB encoder? */ if (dc->rgb) { value = tegra_dc_readl(dc, DC_CMD_DISPLAY_POWER_CONTROL); value &= ~(PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE | PW4_ENABLE | PM0_ENABLE | PM1_ENABLE); tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL); } drm_crtc_vblank_off(crtc); } static bool tegra_crtc_mode_fixup(struct drm_crtc *crtc, const struct drm_display_mode *mode, struct drm_display_mode *adjusted) { return true; } static int tegra_dc_set_timings(struct tegra_dc *dc, struct drm_display_mode *mode) { unsigned int h_ref_to_sync = 1; unsigned int v_ref_to_sync = 1; unsigned long value; tegra_dc_writel(dc, 0x0, DC_DISP_DISP_TIMING_OPTIONS); value = (v_ref_to_sync << 16) | h_ref_to_sync; tegra_dc_writel(dc, value, DC_DISP_REF_TO_SYNC); value = ((mode->vsync_end - mode->vsync_start) << 16) | ((mode->hsync_end - mode->hsync_start) << 0); tegra_dc_writel(dc, value, DC_DISP_SYNC_WIDTH); value = ((mode->vtotal - mode->vsync_end) << 16) | ((mode->htotal - mode->hsync_end) << 0); tegra_dc_writel(dc, value, DC_DISP_BACK_PORCH); value = ((mode->vsync_start - mode->vdisplay) << 16) | ((mode->hsync_start - mode->hdisplay) << 0); tegra_dc_writel(dc, value, DC_DISP_FRONT_PORCH); value = (mode->vdisplay << 16) | mode->hdisplay; tegra_dc_writel(dc, value, DC_DISP_ACTIVE); return 0; } int tegra_dc_setup_clock(struct tegra_dc *dc, struct clk *parent, unsigned long pclk, unsigned int div) { u32 value; int err; err = clk_set_parent(dc->clk, parent); if (err < 0) { dev_err(dc->dev, "failed to set parent clock: %d\n", err); return err; } DRM_DEBUG_KMS("rate: %lu, div: %u\n", clk_get_rate(dc->clk), div); value = SHIFT_CLK_DIVIDER(div) | PIXEL_CLK_DIVIDER_PCD1; tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL); return 0; } int tegra_dc_state_setup_clock(struct tegra_dc *dc, struct drm_crtc_state *crtc_state, struct clk *clk, unsigned long pclk, unsigned int div) { struct tegra_dc_state *state = to_dc_state(crtc_state); state->clk = clk; state->pclk = pclk; state->div = div; return 0; } static void tegra_dc_commit_state(struct tegra_dc *dc, struct tegra_dc_state *state) { u32 value; int err; err = clk_set_parent(dc->clk, state->clk); if (err < 0) dev_err(dc->dev, "failed to set parent clock: %d\n", err); /* * Outputs may not want to change the parent clock rate. This is only * relevant to Tegra20 where only a single display PLL is available. * Since that PLL would typically be used for HDMI, an internal LVDS * panel would need to be driven by some other clock such as PLL_P * which is shared with other peripherals. Changing the clock rate * should therefore be avoided. */ if (state->pclk > 0) { err = clk_set_rate(state->clk, state->pclk); if (err < 0) dev_err(dc->dev, "failed to set clock rate to %lu Hz\n", state->pclk); } DRM_DEBUG_KMS("rate: %lu, div: %u\n", clk_get_rate(dc->clk), state->div); DRM_DEBUG_KMS("pclk: %lu\n", state->pclk); value = SHIFT_CLK_DIVIDER(state->div) | PIXEL_CLK_DIVIDER_PCD1; tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL); } static void tegra_crtc_mode_set_nofb(struct drm_crtc *crtc) { struct drm_display_mode *mode = &crtc->state->adjusted_mode; struct tegra_dc_state *state = to_dc_state(crtc->state); struct tegra_dc *dc = to_tegra_dc(crtc); u32 value; tegra_dc_commit_state(dc, state); /* program display mode */ tegra_dc_set_timings(dc, mode); if (dc->soc->supports_border_color) tegra_dc_writel(dc, 0, DC_DISP_BORDER_COLOR); /* interlacing isn't supported yet, so disable it */ if (dc->soc->supports_interlacing) { value = tegra_dc_readl(dc, DC_DISP_INTERLACE_CONTROL); value &= ~INTERLACE_ENABLE; tegra_dc_writel(dc, value, DC_DISP_INTERLACE_CONTROL); } } static void tegra_crtc_prepare(struct drm_crtc *crtc) { struct tegra_dc *dc = to_tegra_dc(crtc); unsigned int syncpt; unsigned long value; drm_crtc_vblank_off(crtc); if (dc->pipe) syncpt = SYNCPT_VBLANK1; else syncpt = SYNCPT_VBLANK0; /* initialize display controller */ tegra_dc_writel(dc, 0x00000100, DC_CMD_GENERAL_INCR_SYNCPT_CNTRL); tegra_dc_writel(dc, 0x100 | syncpt, DC_CMD_CONT_SYNCPT_VSYNC); value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT | WIN_A_OF_INT; tegra_dc_writel(dc, value, DC_CMD_INT_TYPE); value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT | WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT; tegra_dc_writel(dc, value, DC_CMD_INT_POLARITY); /* initialize timer */ value = CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(0x20) | WINDOW_B_THRESHOLD(0x20) | WINDOW_C_THRESHOLD(0x20); tegra_dc_writel(dc, value, DC_DISP_DISP_MEM_HIGH_PRIORITY); value = CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(1) | WINDOW_B_THRESHOLD(1) | WINDOW_C_THRESHOLD(1); tegra_dc_writel(dc, value, DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER); value = VBLANK_INT | WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT; tegra_dc_writel(dc, value, DC_CMD_INT_ENABLE); value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT; tegra_dc_writel(dc, value, DC_CMD_INT_MASK); } static void tegra_crtc_commit(struct drm_crtc *crtc) { drm_crtc_vblank_on(crtc); } static int tegra_crtc_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state) { return 0; } static void tegra_crtc_atomic_begin(struct drm_crtc *crtc) { struct tegra_dc *dc = to_tegra_dc(crtc); if (crtc->state->event) { crtc->state->event->pipe = drm_crtc_index(crtc); WARN_ON(drm_crtc_vblank_get(crtc) != 0); dc->event = crtc->state->event; crtc->state->event = NULL; } } static void tegra_crtc_atomic_flush(struct drm_crtc *crtc) { struct tegra_dc_state *state = to_dc_state(crtc->state); struct tegra_dc *dc = to_tegra_dc(crtc); tegra_dc_writel(dc, state->planes << 8, DC_CMD_STATE_CONTROL); tegra_dc_writel(dc, state->planes, DC_CMD_STATE_CONTROL); } static const struct drm_crtc_helper_funcs tegra_crtc_helper_funcs = { .disable = tegra_crtc_disable, .mode_fixup = tegra_crtc_mode_fixup, .mode_set = drm_helper_crtc_mode_set, .mode_set_nofb = tegra_crtc_mode_set_nofb, .mode_set_base = drm_helper_crtc_mode_set_base, .prepare = tegra_crtc_prepare, .commit = tegra_crtc_commit, .atomic_check = tegra_crtc_atomic_check, .atomic_begin = tegra_crtc_atomic_begin, .atomic_flush = tegra_crtc_atomic_flush, }; static irqreturn_t tegra_dc_irq(int irq, void *data) { struct tegra_dc *dc = data; unsigned long status; status = tegra_dc_readl(dc, DC_CMD_INT_STATUS); tegra_dc_writel(dc, status, DC_CMD_INT_STATUS); if (status & FRAME_END_INT) { /* dev_dbg(dc->dev, "%s(): frame end\n", __func__); */ } if (status & VBLANK_INT) { /* dev_dbg(dc->dev, "%s(): vertical blank\n", __func__); */ drm_crtc_handle_vblank(&dc->base); tegra_dc_finish_page_flip(dc); } if (status & (WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT)) { /* dev_dbg(dc->dev, "%s(): underflow\n", __func__); */ } return IRQ_HANDLED; } static int tegra_dc_show_regs(struct seq_file *s, void *data) { struct drm_info_node *node = s->private; struct tegra_dc *dc = node->info_ent->data; #define DUMP_REG(name) \ seq_printf(s, "%-40s %#05x %08x\n", #name, name, \ tegra_dc_readl(dc, name)) DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT); DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT_CNTRL); DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT_ERROR); DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT); DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT_CNTRL); DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT_ERROR); DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT); DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT_CNTRL); DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT_ERROR); DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT); DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT_CNTRL); DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT_ERROR); DUMP_REG(DC_CMD_CONT_SYNCPT_VSYNC); DUMP_REG(DC_CMD_DISPLAY_COMMAND_OPTION0); DUMP_REG(DC_CMD_DISPLAY_COMMAND); DUMP_REG(DC_CMD_SIGNAL_RAISE); DUMP_REG(DC_CMD_DISPLAY_POWER_CONTROL); DUMP_REG(DC_CMD_INT_STATUS); DUMP_REG(DC_CMD_INT_MASK); DUMP_REG(DC_CMD_INT_ENABLE); DUMP_REG(DC_CMD_INT_TYPE); DUMP_REG(DC_CMD_INT_POLARITY); DUMP_REG(DC_CMD_SIGNAL_RAISE1); DUMP_REG(DC_CMD_SIGNAL_RAISE2); DUMP_REG(DC_CMD_SIGNAL_RAISE3); DUMP_REG(DC_CMD_STATE_ACCESS); DUMP_REG(DC_CMD_STATE_CONTROL); DUMP_REG(DC_CMD_DISPLAY_WINDOW_HEADER); DUMP_REG(DC_CMD_REG_ACT_CONTROL); DUMP_REG(DC_COM_CRC_CONTROL); DUMP_REG(DC_COM_CRC_CHECKSUM); DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(0)); DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(1)); DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(2)); DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(3)); DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(0)); DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(1)); DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(2)); DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(3)); DUMP_REG(DC_COM_PIN_OUTPUT_DATA(0)); DUMP_REG(DC_COM_PIN_OUTPUT_DATA(1)); DUMP_REG(DC_COM_PIN_OUTPUT_DATA(2)); DUMP_REG(DC_COM_PIN_OUTPUT_DATA(3)); DUMP_REG(DC_COM_PIN_INPUT_ENABLE(0)); DUMP_REG(DC_COM_PIN_INPUT_ENABLE(1)); DUMP_REG(DC_COM_PIN_INPUT_ENABLE(2)); DUMP_REG(DC_COM_PIN_INPUT_ENABLE(3)); DUMP_REG(DC_COM_PIN_INPUT_DATA(0)); DUMP_REG(DC_COM_PIN_INPUT_DATA(1)); DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(0)); DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(1)); DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(2)); DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(3)); DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(4)); DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(5)); DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(6)); DUMP_REG(DC_COM_PIN_MISC_CONTROL); DUMP_REG(DC_COM_PIN_PM0_CONTROL); DUMP_REG(DC_COM_PIN_PM0_DUTY_CYCLE); DUMP_REG(DC_COM_PIN_PM1_CONTROL); DUMP_REG(DC_COM_PIN_PM1_DUTY_CYCLE); DUMP_REG(DC_COM_SPI_CONTROL); DUMP_REG(DC_COM_SPI_START_BYTE); DUMP_REG(DC_COM_HSPI_WRITE_DATA_AB); DUMP_REG(DC_COM_HSPI_WRITE_DATA_CD); DUMP_REG(DC_COM_HSPI_CS_DC); DUMP_REG(DC_COM_SCRATCH_REGISTER_A); DUMP_REG(DC_COM_SCRATCH_REGISTER_B); DUMP_REG(DC_COM_GPIO_CTRL); DUMP_REG(DC_COM_GPIO_DEBOUNCE_COUNTER); DUMP_REG(DC_COM_CRC_CHECKSUM_LATCHED); DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS0); DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS1); DUMP_REG(DC_DISP_DISP_WIN_OPTIONS); DUMP_REG(DC_DISP_DISP_MEM_HIGH_PRIORITY); DUMP_REG(DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER); DUMP_REG(DC_DISP_DISP_TIMING_OPTIONS); DUMP_REG(DC_DISP_REF_TO_SYNC); DUMP_REG(DC_DISP_SYNC_WIDTH); DUMP_REG(DC_DISP_BACK_PORCH); DUMP_REG(DC_DISP_ACTIVE); DUMP_REG(DC_DISP_FRONT_PORCH); DUMP_REG(DC_DISP_H_PULSE0_CONTROL); DUMP_REG(DC_DISP_H_PULSE0_POSITION_A); DUMP_REG(DC_DISP_H_PULSE0_POSITION_B); DUMP_REG(DC_DISP_H_PULSE0_POSITION_C); DUMP_REG(DC_DISP_H_PULSE0_POSITION_D); DUMP_REG(DC_DISP_H_PULSE1_CONTROL); DUMP_REG(DC_DISP_H_PULSE1_POSITION_A); DUMP_REG(DC_DISP_H_PULSE1_POSITION_B); DUMP_REG(DC_DISP_H_PULSE1_POSITION_C); DUMP_REG(DC_DISP_H_PULSE1_POSITION_D); DUMP_REG(DC_DISP_H_PULSE2_CONTROL); DUMP_REG(DC_DISP_H_PULSE2_POSITION_A); DUMP_REG(DC_DISP_H_PULSE2_POSITION_B); DUMP_REG(DC_DISP_H_PULSE2_POSITION_C); DUMP_REG(DC_DISP_H_PULSE2_POSITION_D); DUMP_REG(DC_DISP_V_PULSE0_CONTROL); DUMP_REG(DC_DISP_V_PULSE0_POSITION_A); DUMP_REG(DC_DISP_V_PULSE0_POSITION_B); DUMP_REG(DC_DISP_V_PULSE0_POSITION_C); DUMP_REG(DC_DISP_V_PULSE1_CONTROL); DUMP_REG(DC_DISP_V_PULSE1_POSITION_A); DUMP_REG(DC_DISP_V_PULSE1_POSITION_B); DUMP_REG(DC_DISP_V_PULSE1_POSITION_C); DUMP_REG(DC_DISP_V_PULSE2_CONTROL); DUMP_REG(DC_DISP_V_PULSE2_POSITION_A); DUMP_REG(DC_DISP_V_PULSE3_CONTROL); DUMP_REG(DC_DISP_V_PULSE3_POSITION_A); DUMP_REG(DC_DISP_M0_CONTROL); DUMP_REG(DC_DISP_M1_CONTROL); DUMP_REG(DC_DISP_DI_CONTROL); DUMP_REG(DC_DISP_PP_CONTROL); DUMP_REG(DC_DISP_PP_SELECT_A); DUMP_REG(DC_DISP_PP_SELECT_B); DUMP_REG(DC_DISP_PP_SELECT_C); DUMP_REG(DC_DISP_PP_SELECT_D); DUMP_REG(DC_DISP_DISP_CLOCK_CONTROL); DUMP_REG(DC_DISP_DISP_INTERFACE_CONTROL); DUMP_REG(DC_DISP_DISP_COLOR_CONTROL); DUMP_REG(DC_DISP_SHIFT_CLOCK_OPTIONS); DUMP_REG(DC_DISP_DATA_ENABLE_OPTIONS); DUMP_REG(DC_DISP_SERIAL_INTERFACE_OPTIONS); DUMP_REG(DC_DISP_LCD_SPI_OPTIONS); DUMP_REG(DC_DISP_BORDER_COLOR); DUMP_REG(DC_DISP_COLOR_KEY0_LOWER); DUMP_REG(DC_DISP_COLOR_KEY0_UPPER); DUMP_REG(DC_DISP_COLOR_KEY1_LOWER); DUMP_REG(DC_DISP_COLOR_KEY1_UPPER); DUMP_REG(DC_DISP_CURSOR_FOREGROUND); DUMP_REG(DC_DISP_CURSOR_BACKGROUND); DUMP_REG(DC_DISP_CURSOR_START_ADDR); DUMP_REG(DC_DISP_CURSOR_START_ADDR_NS); DUMP_REG(DC_DISP_CURSOR_POSITION); DUMP_REG(DC_DISP_CURSOR_POSITION_NS); DUMP_REG(DC_DISP_INIT_SEQ_CONTROL); DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_A); DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_B); DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_C); DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_D); DUMP_REG(DC_DISP_DC_MCCIF_FIFOCTRL); DUMP_REG(DC_DISP_MCCIF_DISPLAY0A_HYST); DUMP_REG(DC_DISP_MCCIF_DISPLAY0B_HYST); DUMP_REG(DC_DISP_MCCIF_DISPLAY1A_HYST); DUMP_REG(DC_DISP_MCCIF_DISPLAY1B_HYST); DUMP_REG(DC_DISP_DAC_CRT_CTRL); DUMP_REG(DC_DISP_DISP_MISC_CONTROL); DUMP_REG(DC_DISP_SD_CONTROL); DUMP_REG(DC_DISP_SD_CSC_COEFF); DUMP_REG(DC_DISP_SD_LUT(0)); DUMP_REG(DC_DISP_SD_LUT(1)); DUMP_REG(DC_DISP_SD_LUT(2)); DUMP_REG(DC_DISP_SD_LUT(3)); DUMP_REG(DC_DISP_SD_LUT(4)); DUMP_REG(DC_DISP_SD_LUT(5)); DUMP_REG(DC_DISP_SD_LUT(6)); DUMP_REG(DC_DISP_SD_LUT(7)); DUMP_REG(DC_DISP_SD_LUT(8)); DUMP_REG(DC_DISP_SD_FLICKER_CONTROL); DUMP_REG(DC_DISP_DC_PIXEL_COUNT); DUMP_REG(DC_DISP_SD_HISTOGRAM(0)); DUMP_REG(DC_DISP_SD_HISTOGRAM(1)); DUMP_REG(DC_DISP_SD_HISTOGRAM(2)); DUMP_REG(DC_DISP_SD_HISTOGRAM(3)); DUMP_REG(DC_DISP_SD_HISTOGRAM(4)); DUMP_REG(DC_DISP_SD_HISTOGRAM(5)); DUMP_REG(DC_DISP_SD_HISTOGRAM(6)); DUMP_REG(DC_DISP_SD_HISTOGRAM(7)); DUMP_REG(DC_DISP_SD_BL_TF(0)); DUMP_REG(DC_DISP_SD_BL_TF(1)); DUMP_REG(DC_DISP_SD_BL_TF(2)); DUMP_REG(DC_DISP_SD_BL_TF(3)); DUMP_REG(DC_DISP_SD_BL_CONTROL); DUMP_REG(DC_DISP_SD_HW_K_VALUES); DUMP_REG(DC_DISP_SD_MAN_K_VALUES); DUMP_REG(DC_DISP_CURSOR_START_ADDR_HI); DUMP_REG(DC_DISP_BLEND_CURSOR_CONTROL); DUMP_REG(DC_WIN_WIN_OPTIONS); DUMP_REG(DC_WIN_BYTE_SWAP); DUMP_REG(DC_WIN_BUFFER_CONTROL); DUMP_REG(DC_WIN_COLOR_DEPTH); DUMP_REG(DC_WIN_POSITION); DUMP_REG(DC_WIN_SIZE); DUMP_REG(DC_WIN_PRESCALED_SIZE); DUMP_REG(DC_WIN_H_INITIAL_DDA); DUMP_REG(DC_WIN_V_INITIAL_DDA); DUMP_REG(DC_WIN_DDA_INC); DUMP_REG(DC_WIN_LINE_STRIDE); DUMP_REG(DC_WIN_BUF_STRIDE); DUMP_REG(DC_WIN_UV_BUF_STRIDE); DUMP_REG(DC_WIN_BUFFER_ADDR_MODE); DUMP_REG(DC_WIN_DV_CONTROL); DUMP_REG(DC_WIN_BLEND_NOKEY); DUMP_REG(DC_WIN_BLEND_1WIN); DUMP_REG(DC_WIN_BLEND_2WIN_X); DUMP_REG(DC_WIN_BLEND_2WIN_Y); DUMP_REG(DC_WIN_BLEND_3WIN_XY); DUMP_REG(DC_WIN_HP_FETCH_CONTROL); DUMP_REG(DC_WINBUF_START_ADDR); DUMP_REG(DC_WINBUF_START_ADDR_NS); DUMP_REG(DC_WINBUF_START_ADDR_U); DUMP_REG(DC_WINBUF_START_ADDR_U_NS); DUMP_REG(DC_WINBUF_START_ADDR_V); DUMP_REG(DC_WINBUF_START_ADDR_V_NS); DUMP_REG(DC_WINBUF_ADDR_H_OFFSET); DUMP_REG(DC_WINBUF_ADDR_H_OFFSET_NS); DUMP_REG(DC_WINBUF_ADDR_V_OFFSET); DUMP_REG(DC_WINBUF_ADDR_V_OFFSET_NS); DUMP_REG(DC_WINBUF_UFLOW_STATUS); DUMP_REG(DC_WINBUF_AD_UFLOW_STATUS); DUMP_REG(DC_WINBUF_BD_UFLOW_STATUS); DUMP_REG(DC_WINBUF_CD_UFLOW_STATUS); #undef DUMP_REG return 0; } static struct drm_info_list debugfs_files[] = { { "regs", tegra_dc_show_regs, 0, NULL }, }; static int tegra_dc_debugfs_init(struct tegra_dc *dc, struct drm_minor *minor) { unsigned int i; char *name; int err; name = kasprintf(GFP_KERNEL, "dc.%d", dc->pipe); dc->debugfs = debugfs_create_dir(name, minor->debugfs_root); kfree(name); if (!dc->debugfs) return -ENOMEM; dc->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files), GFP_KERNEL); if (!dc->debugfs_files) { err = -ENOMEM; goto remove; } for (i = 0; i < ARRAY_SIZE(debugfs_files); i++) dc->debugfs_files[i].data = dc; err = drm_debugfs_create_files(dc->debugfs_files, ARRAY_SIZE(debugfs_files), dc->debugfs, minor); if (err < 0) goto free; dc->minor = minor; return 0; free: kfree(dc->debugfs_files); dc->debugfs_files = NULL; remove: debugfs_remove(dc->debugfs); dc->debugfs = NULL; return err; } static int tegra_dc_debugfs_exit(struct tegra_dc *dc) { drm_debugfs_remove_files(dc->debugfs_files, ARRAY_SIZE(debugfs_files), dc->minor); dc->minor = NULL; kfree(dc->debugfs_files); dc->debugfs_files = NULL; debugfs_remove(dc->debugfs); dc->debugfs = NULL; return 0; } static int tegra_dc_init(struct host1x_client *client) { struct drm_device *drm = dev_get_drvdata(client->parent); struct tegra_dc *dc = host1x_client_to_dc(client); struct tegra_drm *tegra = drm->dev_private; struct drm_plane *primary = NULL; struct drm_plane *cursor = NULL; int err; if (tegra->domain) { err = iommu_attach_device(tegra->domain, dc->dev); if (err < 0) { dev_err(dc->dev, "failed to attach to domain: %d\n", err); return err; } dc->domain = tegra->domain; } primary = tegra_dc_primary_plane_create(drm, dc); if (IS_ERR(primary)) { err = PTR_ERR(primary); goto cleanup; } if (dc->soc->supports_cursor) { cursor = tegra_dc_cursor_plane_create(drm, dc); if (IS_ERR(cursor)) { err = PTR_ERR(cursor); goto cleanup; } } err = drm_crtc_init_with_planes(drm, &dc->base, primary, cursor, &tegra_crtc_funcs); if (err < 0) goto cleanup; drm_mode_crtc_set_gamma_size(&dc->base, 256); drm_crtc_helper_add(&dc->base, &tegra_crtc_helper_funcs); /* * Keep track of the minimum pitch alignment across all display * controllers. */ if (dc->soc->pitch_align > tegra->pitch_align) tegra->pitch_align = dc->soc->pitch_align; err = tegra_dc_rgb_init(drm, dc); if (err < 0 && err != -ENODEV) { dev_err(dc->dev, "failed to initialize RGB output: %d\n", err); goto cleanup; } err = tegra_dc_add_planes(drm, dc); if (err < 0) goto cleanup; if (IS_ENABLED(CONFIG_DEBUG_FS)) { err = tegra_dc_debugfs_init(dc, drm->primary); if (err < 0) dev_err(dc->dev, "debugfs setup failed: %d\n", err); } err = devm_request_irq(dc->dev, dc->irq, tegra_dc_irq, 0, dev_name(dc->dev), dc); if (err < 0) { dev_err(dc->dev, "failed to request IRQ#%u: %d\n", dc->irq, err); goto cleanup; } return 0; cleanup: if (cursor) drm_plane_cleanup(cursor); if (primary) drm_plane_cleanup(primary); if (tegra->domain) { iommu_detach_device(tegra->domain, dc->dev); dc->domain = NULL; } return err; } static int tegra_dc_exit(struct host1x_client *client) { struct tegra_dc *dc = host1x_client_to_dc(client); int err; devm_free_irq(dc->dev, dc->irq, dc); if (IS_ENABLED(CONFIG_DEBUG_FS)) { err = tegra_dc_debugfs_exit(dc); if (err < 0) dev_err(dc->dev, "debugfs cleanup failed: %d\n", err); } err = tegra_dc_rgb_exit(dc); if (err) { dev_err(dc->dev, "failed to shutdown RGB output: %d\n", err); return err; } if (dc->domain) { iommu_detach_device(dc->domain, dc->dev); dc->domain = NULL; } return 0; } static const struct host1x_client_ops dc_client_ops = { .init = tegra_dc_init, .exit = tegra_dc_exit, }; static const struct tegra_dc_soc_info tegra20_dc_soc_info = { .supports_border_color = true, .supports_interlacing = false, .supports_cursor = false, .supports_block_linear = false, .pitch_align = 8, .has_powergate = false, }; static const struct tegra_dc_soc_info tegra30_dc_soc_info = { .supports_border_color = true, .supports_interlacing = false, .supports_cursor = false, .supports_block_linear = false, .pitch_align = 8, .has_powergate = false, }; static const struct tegra_dc_soc_info tegra114_dc_soc_info = { .supports_border_color = true, .supports_interlacing = false, .supports_cursor = false, .supports_block_linear = false, .pitch_align = 64, .has_powergate = true, }; static const struct tegra_dc_soc_info tegra124_dc_soc_info = { .supports_border_color = false, .supports_interlacing = true, .supports_cursor = true, .supports_block_linear = true, .pitch_align = 64, .has_powergate = true, }; static const struct of_device_id tegra_dc_of_match[] = { { .compatible = "nvidia,tegra124-dc", .data = &tegra124_dc_soc_info, }, { .compatible = "nvidia,tegra114-dc", .data = &tegra114_dc_soc_info, }, { .compatible = "nvidia,tegra30-dc", .data = &tegra30_dc_soc_info, }, { .compatible = "nvidia,tegra20-dc", .data = &tegra20_dc_soc_info, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, tegra_dc_of_match); static int tegra_dc_parse_dt(struct tegra_dc *dc) { struct device_node *np; u32 value = 0; int err; err = of_property_read_u32(dc->dev->of_node, "nvidia,head", &value); if (err < 0) { dev_err(dc->dev, "missing \"nvidia,head\" property\n"); /* * If the nvidia,head property isn't present, try to find the * correct head number by looking up the position of this * display controller's node within the device tree. Assuming * that the nodes are ordered properly in the DTS file and * that the translation into a flattened device tree blob * preserves that ordering this will actually yield the right * head number. * * If those assumptions don't hold, this will still work for * cases where only a single display controller is used. */ for_each_matching_node(np, tegra_dc_of_match) { if (np == dc->dev->of_node) break; value++; } } dc->pipe = value; return 0; } static int tegra_dc_probe(struct platform_device *pdev) { const struct of_device_id *id; struct resource *regs; struct tegra_dc *dc; int err; dc = devm_kzalloc(&pdev->dev, sizeof(*dc), GFP_KERNEL); if (!dc) return -ENOMEM; id = of_match_node(tegra_dc_of_match, pdev->dev.of_node); if (!id) return -ENODEV; spin_lock_init(&dc->lock); INIT_LIST_HEAD(&dc->list); dc->dev = &pdev->dev; dc->soc = id->data; err = tegra_dc_parse_dt(dc); if (err < 0) return err; dc->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(dc->clk)) { dev_err(&pdev->dev, "failed to get clock\n"); return PTR_ERR(dc->clk); } dc->rst = devm_reset_control_get(&pdev->dev, "dc"); if (IS_ERR(dc->rst)) { dev_err(&pdev->dev, "failed to get reset\n"); return PTR_ERR(dc->rst); } if (dc->soc->has_powergate) { if (dc->pipe == 0) dc->powergate = TEGRA_POWERGATE_DIS; else dc->powergate = TEGRA_POWERGATE_DISB; err = tegra_powergate_sequence_power_up(dc->powergate, dc->clk, dc->rst); if (err < 0) { dev_err(&pdev->dev, "failed to power partition: %d\n", err); return err; } } else { err = clk_prepare_enable(dc->clk); if (err < 0) { dev_err(&pdev->dev, "failed to enable clock: %d\n", err); return err; } err = reset_control_deassert(dc->rst); if (err < 0) { dev_err(&pdev->dev, "failed to deassert reset: %d\n", err); return err; } } regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); dc->regs = devm_ioremap_resource(&pdev->dev, regs); if (IS_ERR(dc->regs)) return PTR_ERR(dc->regs); dc->irq = platform_get_irq(pdev, 0); if (dc->irq < 0) { dev_err(&pdev->dev, "failed to get IRQ\n"); return -ENXIO; } INIT_LIST_HEAD(&dc->client.list); dc->client.ops = &dc_client_ops; dc->client.dev = &pdev->dev; err = tegra_dc_rgb_probe(dc); if (err < 0 && err != -ENODEV) { dev_err(&pdev->dev, "failed to probe RGB output: %d\n", err); return err; } err = host1x_client_register(&dc->client); if (err < 0) { dev_err(&pdev->dev, "failed to register host1x client: %d\n", err); return err; } platform_set_drvdata(pdev, dc); return 0; } static int tegra_dc_remove(struct platform_device *pdev) { struct tegra_dc *dc = platform_get_drvdata(pdev); int err; err = host1x_client_unregister(&dc->client); if (err < 0) { dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", err); return err; } err = tegra_dc_rgb_remove(dc); if (err < 0) { dev_err(&pdev->dev, "failed to remove RGB output: %d\n", err); return err; } reset_control_assert(dc->rst); if (dc->soc->has_powergate) tegra_powergate_power_off(dc->powergate); clk_disable_unprepare(dc->clk); return 0; } struct platform_driver tegra_dc_driver = { .driver = { .name = "tegra-dc", .owner = THIS_MODULE, .of_match_table = tegra_dc_of_match, }, .probe = tegra_dc_probe, .remove = tegra_dc_remove, };