/* * Copyright (C) 2011 Samsung Electronics Co.Ltd * Authors: * Seung-Woo Kim * Inki Dae * Joonyoung Shim * * Based on drivers/media/video/s5p-tv/mixer_reg.c * * 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 #include "regs-mixer.h" #include "regs-vp.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "exynos_drm_drv.h" #include "exynos_drm_crtc.h" #include "exynos_drm_fb.h" #include "exynos_drm_plane.h" #include "exynos_drm_iommu.h" #define MIXER_WIN_NR 3 #define VP_DEFAULT_WIN 2 /* * Mixer color space conversion coefficient triplet. * Used for CSC from RGB to YCbCr. * Each coefficient is a 10-bit fixed point number with * sign and no integer part, i.e. * [0:8] = fractional part (representing a value y = x / 2^9) * [9] = sign * Negative values are encoded with two's complement. */ #define MXR_CSC_C(x) ((int)((x) * 512.0) & 0x3ff) #define MXR_CSC_CT(a0, a1, a2) \ ((MXR_CSC_C(a0) << 20) | (MXR_CSC_C(a1) << 10) | (MXR_CSC_C(a2) << 0)) /* YCbCr value, used for mixer background color configuration. */ #define MXR_YCBCR_VAL(y, cb, cr) (((y) << 16) | ((cb) << 8) | ((cr) << 0)) /* The pixelformats that are natively supported by the mixer. */ #define MXR_FORMAT_RGB565 4 #define MXR_FORMAT_ARGB1555 5 #define MXR_FORMAT_ARGB4444 6 #define MXR_FORMAT_ARGB8888 7 struct mixer_resources { int irq; void __iomem *mixer_regs; void __iomem *vp_regs; spinlock_t reg_slock; struct clk *mixer; struct clk *vp; struct clk *hdmi; struct clk *sclk_mixer; struct clk *sclk_hdmi; struct clk *mout_mixer; }; enum mixer_version_id { MXR_VER_0_0_0_16, MXR_VER_16_0_33_0, MXR_VER_128_0_0_184, }; enum mixer_flag_bits { MXR_BIT_POWERED, MXR_BIT_VSYNC, MXR_BIT_INTERLACE, MXR_BIT_VP_ENABLED, MXR_BIT_HAS_SCLK, }; static const uint32_t mixer_formats[] = { DRM_FORMAT_XRGB4444, DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555, DRM_FORMAT_ARGB1555, DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, }; static const uint32_t vp_formats[] = { DRM_FORMAT_NV12, DRM_FORMAT_NV21, }; struct mixer_context { struct platform_device *pdev; struct device *dev; struct drm_device *drm_dev; struct exynos_drm_crtc *crtc; struct exynos_drm_plane planes[MIXER_WIN_NR]; unsigned long flags; struct mixer_resources mixer_res; enum mixer_version_id mxr_ver; }; struct mixer_drv_data { enum mixer_version_id version; bool is_vp_enabled; bool has_sclk; }; static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = { { .zpos = 0, .type = DRM_PLANE_TYPE_PRIMARY, .pixel_formats = mixer_formats, .num_pixel_formats = ARRAY_SIZE(mixer_formats), .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE | EXYNOS_DRM_PLANE_CAP_ZPOS, }, { .zpos = 1, .type = DRM_PLANE_TYPE_CURSOR, .pixel_formats = mixer_formats, .num_pixel_formats = ARRAY_SIZE(mixer_formats), .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE | EXYNOS_DRM_PLANE_CAP_ZPOS, }, { .zpos = 2, .type = DRM_PLANE_TYPE_OVERLAY, .pixel_formats = vp_formats, .num_pixel_formats = ARRAY_SIZE(vp_formats), .capabilities = EXYNOS_DRM_PLANE_CAP_SCALE | EXYNOS_DRM_PLANE_CAP_ZPOS, }, }; static const u8 filter_y_horiz_tap8[] = { 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 2, 4, 5, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 0, -6, -12, -16, -18, -20, -21, -20, -20, -18, -16, -13, -10, -8, -5, -2, 127, 126, 125, 121, 114, 107, 99, 89, 79, 68, 57, 46, 35, 25, 16, 8, }; static const u8 filter_y_vert_tap4[] = { 0, -3, -6, -8, -8, -8, -8, -7, -6, -5, -4, -3, -2, -1, -1, 0, 127, 126, 124, 118, 111, 102, 92, 81, 70, 59, 48, 37, 27, 19, 11, 5, 0, 5, 11, 19, 27, 37, 48, 59, 70, 81, 92, 102, 111, 118, 124, 126, 0, 0, -1, -1, -2, -3, -4, -5, -6, -7, -8, -8, -8, -8, -6, -3, }; static const u8 filter_cr_horiz_tap4[] = { 0, -3, -6, -8, -8, -8, -8, -7, -6, -5, -4, -3, -2, -1, -1, 0, 127, 126, 124, 118, 111, 102, 92, 81, 70, 59, 48, 37, 27, 19, 11, 5, }; static inline bool is_alpha_format(unsigned int pixel_format) { switch (pixel_format) { case DRM_FORMAT_ARGB8888: case DRM_FORMAT_ARGB1555: case DRM_FORMAT_ARGB4444: return true; default: return false; } } static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id) { return readl(res->vp_regs + reg_id); } static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id, u32 val) { writel(val, res->vp_regs + reg_id); } static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id, u32 val, u32 mask) { u32 old = vp_reg_read(res, reg_id); val = (val & mask) | (old & ~mask); writel(val, res->vp_regs + reg_id); } static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id) { return readl(res->mixer_regs + reg_id); } static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id, u32 val) { writel(val, res->mixer_regs + reg_id); } static inline void mixer_reg_writemask(struct mixer_resources *res, u32 reg_id, u32 val, u32 mask) { u32 old = mixer_reg_read(res, reg_id); val = (val & mask) | (old & ~mask); writel(val, res->mixer_regs + reg_id); } static void mixer_regs_dump(struct mixer_context *ctx) { #define DUMPREG(reg_id) \ do { \ DRM_DEBUG_KMS(#reg_id " = %08x\n", \ (u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \ } while (0) DUMPREG(MXR_STATUS); DUMPREG(MXR_CFG); DUMPREG(MXR_INT_EN); DUMPREG(MXR_INT_STATUS); DUMPREG(MXR_LAYER_CFG); DUMPREG(MXR_VIDEO_CFG); DUMPREG(MXR_GRAPHIC0_CFG); DUMPREG(MXR_GRAPHIC0_BASE); DUMPREG(MXR_GRAPHIC0_SPAN); DUMPREG(MXR_GRAPHIC0_WH); DUMPREG(MXR_GRAPHIC0_SXY); DUMPREG(MXR_GRAPHIC0_DXY); DUMPREG(MXR_GRAPHIC1_CFG); DUMPREG(MXR_GRAPHIC1_BASE); DUMPREG(MXR_GRAPHIC1_SPAN); DUMPREG(MXR_GRAPHIC1_WH); DUMPREG(MXR_GRAPHIC1_SXY); DUMPREG(MXR_GRAPHIC1_DXY); #undef DUMPREG } static void vp_regs_dump(struct mixer_context *ctx) { #define DUMPREG(reg_id) \ do { \ DRM_DEBUG_KMS(#reg_id " = %08x\n", \ (u32) readl(ctx->mixer_res.vp_regs + reg_id)); \ } while (0) DUMPREG(VP_ENABLE); DUMPREG(VP_SRESET); DUMPREG(VP_SHADOW_UPDATE); DUMPREG(VP_FIELD_ID); DUMPREG(VP_MODE); DUMPREG(VP_IMG_SIZE_Y); DUMPREG(VP_IMG_SIZE_C); DUMPREG(VP_PER_RATE_CTRL); DUMPREG(VP_TOP_Y_PTR); DUMPREG(VP_BOT_Y_PTR); DUMPREG(VP_TOP_C_PTR); DUMPREG(VP_BOT_C_PTR); DUMPREG(VP_ENDIAN_MODE); DUMPREG(VP_SRC_H_POSITION); DUMPREG(VP_SRC_V_POSITION); DUMPREG(VP_SRC_WIDTH); DUMPREG(VP_SRC_HEIGHT); DUMPREG(VP_DST_H_POSITION); DUMPREG(VP_DST_V_POSITION); DUMPREG(VP_DST_WIDTH); DUMPREG(VP_DST_HEIGHT); DUMPREG(VP_H_RATIO); DUMPREG(VP_V_RATIO); #undef DUMPREG } static inline void vp_filter_set(struct mixer_resources *res, int reg_id, const u8 *data, unsigned int size) { /* assure 4-byte align */ BUG_ON(size & 3); for (; size; size -= 4, reg_id += 4, data += 4) { u32 val = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3]; vp_reg_write(res, reg_id, val); } } static void vp_default_filter(struct mixer_resources *res) { vp_filter_set(res, VP_POLY8_Y0_LL, filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8)); vp_filter_set(res, VP_POLY4_Y0_LL, filter_y_vert_tap4, sizeof(filter_y_vert_tap4)); vp_filter_set(res, VP_POLY4_C0_LL, filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4)); } static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win, bool alpha) { struct mixer_resources *res = &ctx->mixer_res; u32 val; val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */ if (alpha) { /* blending based on pixel alpha */ val |= MXR_GRP_CFG_BLEND_PRE_MUL; val |= MXR_GRP_CFG_PIXEL_BLEND_EN; } mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win), val, MXR_GRP_CFG_MISC_MASK); } static void mixer_cfg_vp_blend(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; u32 val; /* * No blending at the moment since the NV12/NV21 pixelformats don't * have an alpha channel. However the mixer supports a global alpha * value for a layer. Once this functionality is exposed, we can * support blending of the video layer through this. */ val = 0; mixer_reg_write(res, MXR_VIDEO_CFG, val); } static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable) { struct mixer_resources *res = &ctx->mixer_res; /* block update on vsync */ mixer_reg_writemask(res, MXR_STATUS, enable ? MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE); if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) vp_reg_write(res, VP_SHADOW_UPDATE, enable ? VP_SHADOW_UPDATE_ENABLE : 0); } static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height) { struct mixer_resources *res = &ctx->mixer_res; u32 val; /* choosing between interlace and progressive mode */ val = test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? MXR_CFG_SCAN_INTERLACE : MXR_CFG_SCAN_PROGRESSIVE; if (ctx->mxr_ver != MXR_VER_128_0_0_184) { /* choosing between proper HD and SD mode */ if (height <= 480) val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD; else if (height <= 576) val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD; else if (height <= 720) val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD; else if (height <= 1080) val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD; else val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD; } mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK); } static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height) { struct mixer_resources *res = &ctx->mixer_res; u32 val; switch (height) { case 480: case 576: val = MXR_CFG_RGB601_0_255; break; case 720: case 1080: default: val = MXR_CFG_RGB709_16_235; /* Configure the BT.709 CSC matrix for full range RGB. */ mixer_reg_write(res, MXR_CM_COEFF_Y, MXR_CSC_CT( 0.184, 0.614, 0.063) | MXR_CM_COEFF_RGB_FULL); mixer_reg_write(res, MXR_CM_COEFF_CB, MXR_CSC_CT(-0.102, -0.338, 0.440)); mixer_reg_write(res, MXR_CM_COEFF_CR, MXR_CSC_CT( 0.440, -0.399, -0.040)); break; } mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK); } static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win, unsigned int priority, bool enable) { struct mixer_resources *res = &ctx->mixer_res; u32 val = enable ? ~0 : 0; switch (win) { case 0: mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE); mixer_reg_writemask(res, MXR_LAYER_CFG, MXR_LAYER_CFG_GRP0_VAL(priority), MXR_LAYER_CFG_GRP0_MASK); break; case 1: mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE); mixer_reg_writemask(res, MXR_LAYER_CFG, MXR_LAYER_CFG_GRP1_VAL(priority), MXR_LAYER_CFG_GRP1_MASK); break; case VP_DEFAULT_WIN: if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) { vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON); mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_VP_ENABLE); mixer_reg_writemask(res, MXR_LAYER_CFG, MXR_LAYER_CFG_VP_VAL(priority), MXR_LAYER_CFG_VP_MASK); } break; } } static void mixer_run(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_REG_RUN); } static void mixer_stop(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; int timeout = 20; mixer_reg_writemask(res, MXR_STATUS, 0, MXR_STATUS_REG_RUN); while (!(mixer_reg_read(res, MXR_STATUS) & MXR_STATUS_REG_IDLE) && --timeout) usleep_range(10000, 12000); } static void vp_video_buffer(struct mixer_context *ctx, struct exynos_drm_plane *plane) { struct exynos_drm_plane_state *state = to_exynos_plane_state(plane->base.state); struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode; struct mixer_resources *res = &ctx->mixer_res; struct drm_framebuffer *fb = state->base.fb; unsigned int priority = state->base.normalized_zpos + 1; unsigned long flags; dma_addr_t luma_addr[2], chroma_addr[2]; bool tiled_mode = false; bool crcb_mode = false; u32 val; switch (fb->format->format) { case DRM_FORMAT_NV12: crcb_mode = false; break; case DRM_FORMAT_NV21: crcb_mode = true; break; default: DRM_ERROR("pixel format for vp is wrong [%d].\n", fb->format->format); return; } luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0); chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1); if (mode->flags & DRM_MODE_FLAG_INTERLACE) { __set_bit(MXR_BIT_INTERLACE, &ctx->flags); if (tiled_mode) { luma_addr[1] = luma_addr[0] + 0x40; chroma_addr[1] = chroma_addr[0] + 0x40; } else { luma_addr[1] = luma_addr[0] + fb->pitches[0]; chroma_addr[1] = chroma_addr[0] + fb->pitches[0]; } } else { __clear_bit(MXR_BIT_INTERLACE, &ctx->flags); luma_addr[1] = 0; chroma_addr[1] = 0; } spin_lock_irqsave(&res->reg_slock, flags); /* interlace or progressive scan mode */ val = (test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? ~0 : 0); vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP); /* setup format */ val = (crcb_mode ? VP_MODE_NV21 : VP_MODE_NV12); val |= (tiled_mode ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR); vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK); /* setting size of input image */ vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) | VP_IMG_VSIZE(fb->height)); /* chroma height has to reduced by 2 to avoid chroma distorions */ vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[0]) | VP_IMG_VSIZE(fb->height / 2)); vp_reg_write(res, VP_SRC_WIDTH, state->src.w); vp_reg_write(res, VP_SRC_HEIGHT, state->src.h); vp_reg_write(res, VP_SRC_H_POSITION, VP_SRC_H_POSITION_VAL(state->src.x)); vp_reg_write(res, VP_SRC_V_POSITION, state->src.y); vp_reg_write(res, VP_DST_WIDTH, state->crtc.w); vp_reg_write(res, VP_DST_H_POSITION, state->crtc.x); if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) { vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h / 2); vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y / 2); } else { vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h); vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y); } vp_reg_write(res, VP_H_RATIO, state->h_ratio); vp_reg_write(res, VP_V_RATIO, state->v_ratio); vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE); /* set buffer address to vp */ vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]); vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]); vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]); vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]); mixer_cfg_scan(ctx, mode->vdisplay); mixer_cfg_rgb_fmt(ctx, mode->vdisplay); mixer_cfg_layer(ctx, plane->index, priority, true); mixer_cfg_vp_blend(ctx); mixer_run(ctx); spin_unlock_irqrestore(&res->reg_slock, flags); mixer_regs_dump(ctx); vp_regs_dump(ctx); } static void mixer_layer_update(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE); } static void mixer_graph_buffer(struct mixer_context *ctx, struct exynos_drm_plane *plane) { struct exynos_drm_plane_state *state = to_exynos_plane_state(plane->base.state); struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode; struct mixer_resources *res = &ctx->mixer_res; struct drm_framebuffer *fb = state->base.fb; unsigned int priority = state->base.normalized_zpos + 1; unsigned long flags; unsigned int win = plane->index; unsigned int x_ratio = 0, y_ratio = 0; unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset; dma_addr_t dma_addr; unsigned int fmt; u32 val; switch (fb->format->format) { case DRM_FORMAT_XRGB4444: case DRM_FORMAT_ARGB4444: fmt = MXR_FORMAT_ARGB4444; break; case DRM_FORMAT_XRGB1555: case DRM_FORMAT_ARGB1555: fmt = MXR_FORMAT_ARGB1555; break; case DRM_FORMAT_RGB565: fmt = MXR_FORMAT_RGB565; break; case DRM_FORMAT_XRGB8888: case DRM_FORMAT_ARGB8888: fmt = MXR_FORMAT_ARGB8888; break; default: DRM_DEBUG_KMS("pixelformat unsupported by mixer\n"); return; } /* ratio is already checked by common plane code */ x_ratio = state->h_ratio == (1 << 15); y_ratio = state->v_ratio == (1 << 15); dst_x_offset = state->crtc.x; dst_y_offset = state->crtc.y; /* converting dma address base and source offset */ dma_addr = exynos_drm_fb_dma_addr(fb, 0) + (state->src.x * fb->format->cpp[0]) + (state->src.y * fb->pitches[0]); src_x_offset = 0; src_y_offset = 0; if (mode->flags & DRM_MODE_FLAG_INTERLACE) __set_bit(MXR_BIT_INTERLACE, &ctx->flags); else __clear_bit(MXR_BIT_INTERLACE, &ctx->flags); spin_lock_irqsave(&res->reg_slock, flags); /* setup format */ mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win), MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK); /* setup geometry */ mixer_reg_write(res, MXR_GRAPHIC_SPAN(win), fb->pitches[0] / fb->format->cpp[0]); /* setup display size */ if (ctx->mxr_ver == MXR_VER_128_0_0_184 && win == DEFAULT_WIN) { val = MXR_MXR_RES_HEIGHT(mode->vdisplay); val |= MXR_MXR_RES_WIDTH(mode->hdisplay); mixer_reg_write(res, MXR_RESOLUTION, val); } val = MXR_GRP_WH_WIDTH(state->src.w); val |= MXR_GRP_WH_HEIGHT(state->src.h); val |= MXR_GRP_WH_H_SCALE(x_ratio); val |= MXR_GRP_WH_V_SCALE(y_ratio); mixer_reg_write(res, MXR_GRAPHIC_WH(win), val); /* setup offsets in source image */ val = MXR_GRP_SXY_SX(src_x_offset); val |= MXR_GRP_SXY_SY(src_y_offset); mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val); /* setup offsets in display image */ val = MXR_GRP_DXY_DX(dst_x_offset); val |= MXR_GRP_DXY_DY(dst_y_offset); mixer_reg_write(res, MXR_GRAPHIC_DXY(win), val); /* set buffer address to mixer */ mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr); mixer_cfg_scan(ctx, mode->vdisplay); mixer_cfg_rgb_fmt(ctx, mode->vdisplay); mixer_cfg_layer(ctx, win, priority, true); mixer_cfg_gfx_blend(ctx, win, is_alpha_format(fb->format->format)); /* layer update mandatory for mixer 16.0.33.0 */ if (ctx->mxr_ver == MXR_VER_16_0_33_0 || ctx->mxr_ver == MXR_VER_128_0_0_184) mixer_layer_update(ctx); mixer_run(ctx); spin_unlock_irqrestore(&res->reg_slock, flags); mixer_regs_dump(ctx); } static void vp_win_reset(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; unsigned int tries = 100; vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING); while (--tries) { /* waiting until VP_SRESET_PROCESSING is 0 */ if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING) break; mdelay(10); } WARN(tries == 0, "failed to reset Video Processor\n"); } static void mixer_win_reset(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; unsigned long flags; spin_lock_irqsave(&res->reg_slock, flags); mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK); /* set output in RGB888 mode */ mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK); /* 16 beat burst in DMA */ mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST, MXR_STATUS_BURST_MASK); /* reset default layer priority */ mixer_reg_write(res, MXR_LAYER_CFG, 0); /* set all background colors to RGB (0,0,0) */ mixer_reg_write(res, MXR_BG_COLOR0, MXR_YCBCR_VAL(0, 128, 128)); mixer_reg_write(res, MXR_BG_COLOR1, MXR_YCBCR_VAL(0, 128, 128)); mixer_reg_write(res, MXR_BG_COLOR2, MXR_YCBCR_VAL(0, 128, 128)); if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) { /* configuration of Video Processor Registers */ vp_win_reset(ctx); vp_default_filter(res); } /* disable all layers */ mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE); mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE); if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE); spin_unlock_irqrestore(&res->reg_slock, flags); } static irqreturn_t mixer_irq_handler(int irq, void *arg) { struct mixer_context *ctx = arg; struct mixer_resources *res = &ctx->mixer_res; u32 val, base, shadow; spin_lock(&res->reg_slock); /* read interrupt status for handling and clearing flags for VSYNC */ val = mixer_reg_read(res, MXR_INT_STATUS); /* handling VSYNC */ if (val & MXR_INT_STATUS_VSYNC) { /* vsync interrupt use different bit for read and clear */ val |= MXR_INT_CLEAR_VSYNC; val &= ~MXR_INT_STATUS_VSYNC; /* interlace scan need to check shadow register */ if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) { base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0)); shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0)); if (base != shadow) goto out; base = mixer_reg_read(res, MXR_GRAPHIC_BASE(1)); shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1)); if (base != shadow) goto out; } drm_crtc_handle_vblank(&ctx->crtc->base); } out: /* clear interrupts */ mixer_reg_write(res, MXR_INT_STATUS, val); spin_unlock(&res->reg_slock); return IRQ_HANDLED; } static int mixer_resources_init(struct mixer_context *mixer_ctx) { struct device *dev = &mixer_ctx->pdev->dev; struct mixer_resources *mixer_res = &mixer_ctx->mixer_res; struct resource *res; int ret; spin_lock_init(&mixer_res->reg_slock); mixer_res->mixer = devm_clk_get(dev, "mixer"); if (IS_ERR(mixer_res->mixer)) { dev_err(dev, "failed to get clock 'mixer'\n"); return -ENODEV; } mixer_res->hdmi = devm_clk_get(dev, "hdmi"); if (IS_ERR(mixer_res->hdmi)) { dev_err(dev, "failed to get clock 'hdmi'\n"); return PTR_ERR(mixer_res->hdmi); } mixer_res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi"); if (IS_ERR(mixer_res->sclk_hdmi)) { dev_err(dev, "failed to get clock 'sclk_hdmi'\n"); return -ENODEV; } res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0); if (res == NULL) { dev_err(dev, "get memory resource failed.\n"); return -ENXIO; } mixer_res->mixer_regs = devm_ioremap(dev, res->start, resource_size(res)); if (mixer_res->mixer_regs == NULL) { dev_err(dev, "register mapping failed.\n"); return -ENXIO; } res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0); if (res == NULL) { dev_err(dev, "get interrupt resource failed.\n"); return -ENXIO; } ret = devm_request_irq(dev, res->start, mixer_irq_handler, 0, "drm_mixer", mixer_ctx); if (ret) { dev_err(dev, "request interrupt failed.\n"); return ret; } mixer_res->irq = res->start; return 0; } static int vp_resources_init(struct mixer_context *mixer_ctx) { struct device *dev = &mixer_ctx->pdev->dev; struct mixer_resources *mixer_res = &mixer_ctx->mixer_res; struct resource *res; mixer_res->vp = devm_clk_get(dev, "vp"); if (IS_ERR(mixer_res->vp)) { dev_err(dev, "failed to get clock 'vp'\n"); return -ENODEV; } if (test_bit(MXR_BIT_HAS_SCLK, &mixer_ctx->flags)) { mixer_res->sclk_mixer = devm_clk_get(dev, "sclk_mixer"); if (IS_ERR(mixer_res->sclk_mixer)) { dev_err(dev, "failed to get clock 'sclk_mixer'\n"); return -ENODEV; } mixer_res->mout_mixer = devm_clk_get(dev, "mout_mixer"); if (IS_ERR(mixer_res->mout_mixer)) { dev_err(dev, "failed to get clock 'mout_mixer'\n"); return -ENODEV; } if (mixer_res->sclk_hdmi && mixer_res->mout_mixer) clk_set_parent(mixer_res->mout_mixer, mixer_res->sclk_hdmi); } res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1); if (res == NULL) { dev_err(dev, "get memory resource failed.\n"); return -ENXIO; } mixer_res->vp_regs = devm_ioremap(dev, res->start, resource_size(res)); if (mixer_res->vp_regs == NULL) { dev_err(dev, "register mapping failed.\n"); return -ENXIO; } return 0; } static int mixer_initialize(struct mixer_context *mixer_ctx, struct drm_device *drm_dev) { int ret; struct exynos_drm_private *priv; priv = drm_dev->dev_private; mixer_ctx->drm_dev = drm_dev; /* acquire resources: regs, irqs, clocks */ ret = mixer_resources_init(mixer_ctx); if (ret) { DRM_ERROR("mixer_resources_init failed ret=%d\n", ret); return ret; } if (test_bit(MXR_BIT_VP_ENABLED, &mixer_ctx->flags)) { /* acquire vp resources: regs, irqs, clocks */ ret = vp_resources_init(mixer_ctx); if (ret) { DRM_ERROR("vp_resources_init failed ret=%d\n", ret); return ret; } } return drm_iommu_attach_device(drm_dev, mixer_ctx->dev); } static void mixer_ctx_remove(struct mixer_context *mixer_ctx) { drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev); } static int mixer_enable_vblank(struct exynos_drm_crtc *crtc) { struct mixer_context *mixer_ctx = crtc->ctx; struct mixer_resources *res = &mixer_ctx->mixer_res; __set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags); if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return 0; /* enable vsync interrupt */ mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC); mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC); return 0; } static void mixer_disable_vblank(struct exynos_drm_crtc *crtc) { struct mixer_context *mixer_ctx = crtc->ctx; struct mixer_resources *res = &mixer_ctx->mixer_res; __clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags); if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; /* disable vsync interrupt */ mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC); mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC); } static void mixer_atomic_begin(struct exynos_drm_crtc *crtc) { struct mixer_context *mixer_ctx = crtc->ctx; if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; mixer_vsync_set_update(mixer_ctx, false); } static void mixer_update_plane(struct exynos_drm_crtc *crtc, struct exynos_drm_plane *plane) { struct mixer_context *mixer_ctx = crtc->ctx; DRM_DEBUG_KMS("win: %d\n", plane->index); if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; if (plane->index == VP_DEFAULT_WIN) vp_video_buffer(mixer_ctx, plane); else mixer_graph_buffer(mixer_ctx, plane); } static void mixer_disable_plane(struct exynos_drm_crtc *crtc, struct exynos_drm_plane *plane) { struct mixer_context *mixer_ctx = crtc->ctx; struct mixer_resources *res = &mixer_ctx->mixer_res; unsigned long flags; DRM_DEBUG_KMS("win: %d\n", plane->index); if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; spin_lock_irqsave(&res->reg_slock, flags); mixer_cfg_layer(mixer_ctx, plane->index, 0, false); spin_unlock_irqrestore(&res->reg_slock, flags); } static void mixer_atomic_flush(struct exynos_drm_crtc *crtc) { struct mixer_context *mixer_ctx = crtc->ctx; if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; mixer_vsync_set_update(mixer_ctx, true); exynos_crtc_handle_event(crtc); } static void mixer_enable(struct exynos_drm_crtc *crtc) { struct mixer_context *ctx = crtc->ctx; struct mixer_resources *res = &ctx->mixer_res; if (test_bit(MXR_BIT_POWERED, &ctx->flags)) return; pm_runtime_get_sync(ctx->dev); exynos_drm_pipe_clk_enable(crtc, true); mixer_vsync_set_update(ctx, false); mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET); if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) { mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC); mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC); } mixer_win_reset(ctx); mixer_vsync_set_update(ctx, true); set_bit(MXR_BIT_POWERED, &ctx->flags); } static void mixer_disable(struct exynos_drm_crtc *crtc) { struct mixer_context *ctx = crtc->ctx; int i; if (!test_bit(MXR_BIT_POWERED, &ctx->flags)) return; mixer_stop(ctx); mixer_regs_dump(ctx); for (i = 0; i < MIXER_WIN_NR; i++) mixer_disable_plane(crtc, &ctx->planes[i]); exynos_drm_pipe_clk_enable(crtc, false); pm_runtime_put(ctx->dev); clear_bit(MXR_BIT_POWERED, &ctx->flags); } /* Only valid for Mixer version 16.0.33.0 */ static int mixer_atomic_check(struct exynos_drm_crtc *crtc, struct drm_crtc_state *state) { struct drm_display_mode *mode = &state->adjusted_mode; u32 w, h; w = mode->hdisplay; h = mode->vdisplay; DRM_DEBUG_KMS("xres=%d, yres=%d, refresh=%d, intl=%d\n", mode->hdisplay, mode->vdisplay, mode->vrefresh, (mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0); if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) || (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) || (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080)) return 0; return -EINVAL; } static const struct exynos_drm_crtc_ops mixer_crtc_ops = { .enable = mixer_enable, .disable = mixer_disable, .enable_vblank = mixer_enable_vblank, .disable_vblank = mixer_disable_vblank, .atomic_begin = mixer_atomic_begin, .update_plane = mixer_update_plane, .disable_plane = mixer_disable_plane, .atomic_flush = mixer_atomic_flush, .atomic_check = mixer_atomic_check, }; static const struct mixer_drv_data exynos5420_mxr_drv_data = { .version = MXR_VER_128_0_0_184, .is_vp_enabled = 0, }; static const struct mixer_drv_data exynos5250_mxr_drv_data = { .version = MXR_VER_16_0_33_0, .is_vp_enabled = 0, }; static const struct mixer_drv_data exynos4212_mxr_drv_data = { .version = MXR_VER_0_0_0_16, .is_vp_enabled = 1, }; static const struct mixer_drv_data exynos4210_mxr_drv_data = { .version = MXR_VER_0_0_0_16, .is_vp_enabled = 1, .has_sclk = 1, }; static const struct of_device_id mixer_match_types[] = { { .compatible = "samsung,exynos4210-mixer", .data = &exynos4210_mxr_drv_data, }, { .compatible = "samsung,exynos4212-mixer", .data = &exynos4212_mxr_drv_data, }, { .compatible = "samsung,exynos5-mixer", .data = &exynos5250_mxr_drv_data, }, { .compatible = "samsung,exynos5250-mixer", .data = &exynos5250_mxr_drv_data, }, { .compatible = "samsung,exynos5420-mixer", .data = &exynos5420_mxr_drv_data, }, { /* end node */ } }; MODULE_DEVICE_TABLE(of, mixer_match_types); static int mixer_bind(struct device *dev, struct device *manager, void *data) { struct mixer_context *ctx = dev_get_drvdata(dev); struct drm_device *drm_dev = data; struct exynos_drm_plane *exynos_plane; unsigned int i; int ret; ret = mixer_initialize(ctx, drm_dev); if (ret) return ret; for (i = 0; i < MIXER_WIN_NR; i++) { if (i == VP_DEFAULT_WIN && !test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) continue; ret = exynos_plane_init(drm_dev, &ctx->planes[i], i, &plane_configs[i]); if (ret) return ret; } exynos_plane = &ctx->planes[DEFAULT_WIN]; ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base, EXYNOS_DISPLAY_TYPE_HDMI, &mixer_crtc_ops, ctx); if (IS_ERR(ctx->crtc)) { mixer_ctx_remove(ctx); ret = PTR_ERR(ctx->crtc); goto free_ctx; } return 0; free_ctx: devm_kfree(dev, ctx); return ret; } static void mixer_unbind(struct device *dev, struct device *master, void *data) { struct mixer_context *ctx = dev_get_drvdata(dev); mixer_ctx_remove(ctx); } static const struct component_ops mixer_component_ops = { .bind = mixer_bind, .unbind = mixer_unbind, }; static int mixer_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; const struct mixer_drv_data *drv; struct mixer_context *ctx; int ret; ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) { DRM_ERROR("failed to alloc mixer context.\n"); return -ENOMEM; } drv = of_device_get_match_data(dev); ctx->pdev = pdev; ctx->dev = dev; ctx->mxr_ver = drv->version; if (drv->is_vp_enabled) __set_bit(MXR_BIT_VP_ENABLED, &ctx->flags); if (drv->has_sclk) __set_bit(MXR_BIT_HAS_SCLK, &ctx->flags); platform_set_drvdata(pdev, ctx); ret = component_add(&pdev->dev, &mixer_component_ops); if (!ret) pm_runtime_enable(dev); return ret; } static int mixer_remove(struct platform_device *pdev) { pm_runtime_disable(&pdev->dev); component_del(&pdev->dev, &mixer_component_ops); return 0; } static int __maybe_unused exynos_mixer_suspend(struct device *dev) { struct mixer_context *ctx = dev_get_drvdata(dev); struct mixer_resources *res = &ctx->mixer_res; clk_disable_unprepare(res->hdmi); clk_disable_unprepare(res->mixer); if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) { clk_disable_unprepare(res->vp); if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags)) clk_disable_unprepare(res->sclk_mixer); } return 0; } static int __maybe_unused exynos_mixer_resume(struct device *dev) { struct mixer_context *ctx = dev_get_drvdata(dev); struct mixer_resources *res = &ctx->mixer_res; int ret; ret = clk_prepare_enable(res->mixer); if (ret < 0) { DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret); return ret; } ret = clk_prepare_enable(res->hdmi); if (ret < 0) { DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret); return ret; } if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) { ret = clk_prepare_enable(res->vp); if (ret < 0) { DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n", ret); return ret; } if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags)) { ret = clk_prepare_enable(res->sclk_mixer); if (ret < 0) { DRM_ERROR("Failed to prepare_enable the " \ "sclk_mixer clk [%d]\n", ret); return ret; } } } return 0; } static const struct dev_pm_ops exynos_mixer_pm_ops = { SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL) }; struct platform_driver mixer_driver = { .driver = { .name = "exynos-mixer", .owner = THIS_MODULE, .pm = &exynos_mixer_pm_ops, .of_match_table = mixer_match_types, }, .probe = mixer_probe, .remove = mixer_remove, };