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path: root/drivers/gpu/drm/exynos/exynos_mixer.c
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_mixer.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_mixer.c1070
1 files changed, 1070 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
new file mode 100644
index 000000000000..ac24cff39775
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -0,0 +1,1070 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * Authors:
+ * Seung-Woo Kim <sw0312.kim@samsung.com>
+ * Inki Dae <inki.dae@samsung.com>
+ * Joonyoung Shim <jy0922.shim@samsung.com>
+ *
+ * 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 "drmP.h"
+
+#include "regs-mixer.h"
+#include "regs-vp.h"
+
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/wait.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <linux/pm_runtime.h>
+#include <linux/clk.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/exynos_drm.h>
+
+#include "exynos_drm_drv.h"
+#include "exynos_drm_hdmi.h"
+#include "exynos_hdmi.h"
+#include "exynos_mixer.h"
+
+#define get_mixer_context(dev) platform_get_drvdata(to_platform_device(dev))
+
+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 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_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);
+
+ 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 = (ctx->interlace ? MXR_CFG_SCAN_INTERLACE :
+ MXR_CFG_SCAN_PROGRASSIVE);
+
+ /* choosing between porper 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;
+
+ if (height == 480) {
+ val = MXR_CFG_RGB601_0_255;
+ } else if (height == 576) {
+ val = MXR_CFG_RGB601_0_255;
+ } else if (height == 720) {
+ val = MXR_CFG_RGB709_16_235;
+ mixer_reg_write(res, MXR_CM_COEFF_Y,
+ (1 << 30) | (94 << 20) | (314 << 10) |
+ (32 << 0));
+ mixer_reg_write(res, MXR_CM_COEFF_CB,
+ (972 << 20) | (851 << 10) | (225 << 0));
+ mixer_reg_write(res, MXR_CM_COEFF_CR,
+ (225 << 20) | (820 << 10) | (1004 << 0));
+ } else if (height == 1080) {
+ val = MXR_CFG_RGB709_16_235;
+ mixer_reg_write(res, MXR_CM_COEFF_Y,
+ (1 << 30) | (94 << 20) | (314 << 10) |
+ (32 << 0));
+ mixer_reg_write(res, MXR_CM_COEFF_CB,
+ (972 << 20) | (851 << 10) | (225 << 0));
+ mixer_reg_write(res, MXR_CM_COEFF_CR,
+ (225 << 20) | (820 << 10) | (1004 << 0));
+ } else {
+ val = MXR_CFG_RGB709_16_235;
+ mixer_reg_write(res, MXR_CM_COEFF_Y,
+ (1 << 30) | (94 << 20) | (314 << 10) |
+ (32 << 0));
+ mixer_reg_write(res, MXR_CM_COEFF_CB,
+ (972 << 20) | (851 << 10) | (225 << 0));
+ mixer_reg_write(res, MXR_CM_COEFF_CR,
+ (225 << 20) | (820 << 10) | (1004 << 0));
+ }
+
+ mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
+}
+
+static void mixer_cfg_layer(struct mixer_context *ctx, int win, 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);
+ break;
+ case 1:
+ mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
+ break;
+ case 2:
+ vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
+ mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_VP_ENABLE);
+ 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);
+
+ mixer_regs_dump(ctx);
+}
+
+static void vp_video_buffer(struct mixer_context *ctx, int win)
+{
+ struct mixer_resources *res = &ctx->mixer_res;
+ unsigned long flags;
+ struct hdmi_win_data *win_data;
+ unsigned int full_width, full_height, width, height;
+ unsigned int x_ratio, y_ratio;
+ unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
+ unsigned int mode_width, mode_height;
+ unsigned int buf_num;
+ dma_addr_t luma_addr[2], chroma_addr[2];
+ bool tiled_mode = false;
+ bool crcb_mode = false;
+ u32 val;
+
+ win_data = &ctx->win_data[win];
+
+ switch (win_data->pixel_format) {
+ case DRM_FORMAT_NV12MT:
+ tiled_mode = true;
+ case DRM_FORMAT_NV12M:
+ crcb_mode = false;
+ buf_num = 2;
+ break;
+ /* TODO: single buffer format NV12, NV21 */
+ default:
+ /* ignore pixel format at disable time */
+ if (!win_data->dma_addr)
+ break;
+
+ DRM_ERROR("pixel format for vp is wrong [%d].\n",
+ win_data->pixel_format);
+ return;
+ }
+
+ full_width = win_data->fb_width;
+ full_height = win_data->fb_height;
+ width = win_data->crtc_width;
+ height = win_data->crtc_height;
+ mode_width = win_data->mode_width;
+ mode_height = win_data->mode_height;
+
+ /* scaling feature: (src << 16) / dst */
+ x_ratio = (width << 16) / width;
+ y_ratio = (height << 16) / height;
+
+ src_x_offset = win_data->fb_x;
+ src_y_offset = win_data->fb_y;
+ dst_x_offset = win_data->crtc_x;
+ dst_y_offset = win_data->crtc_y;
+
+ if (buf_num == 2) {
+ luma_addr[0] = win_data->dma_addr;
+ chroma_addr[0] = win_data->chroma_dma_addr;
+ } else {
+ luma_addr[0] = win_data->dma_addr;
+ chroma_addr[0] = win_data->dma_addr
+ + (full_width * full_height);
+ }
+
+ if (win_data->scan_flags & DRM_MODE_FLAG_INTERLACE) {
+ ctx->interlace = true;
+ if (tiled_mode) {
+ luma_addr[1] = luma_addr[0] + 0x40;
+ chroma_addr[1] = chroma_addr[0] + 0x40;
+ } else {
+ luma_addr[1] = luma_addr[0] + full_width;
+ chroma_addr[1] = chroma_addr[0] + full_width;
+ }
+ } else {
+ ctx->interlace = false;
+ luma_addr[1] = 0;
+ chroma_addr[1] = 0;
+ }
+
+ spin_lock_irqsave(&res->reg_slock, flags);
+ mixer_vsync_set_update(ctx, false);
+
+ /* interlace or progressive scan mode */
+ val = (ctx->interlace ? ~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(full_width) |
+ VP_IMG_VSIZE(full_height));
+ /* chroma height has to reduced by 2 to avoid chroma distorions */
+ vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(full_width) |
+ VP_IMG_VSIZE(full_height / 2));
+
+ vp_reg_write(res, VP_SRC_WIDTH, width);
+ vp_reg_write(res, VP_SRC_HEIGHT, height);
+ vp_reg_write(res, VP_SRC_H_POSITION,
+ VP_SRC_H_POSITION_VAL(src_x_offset));
+ vp_reg_write(res, VP_SRC_V_POSITION, src_y_offset);
+
+ vp_reg_write(res, VP_DST_WIDTH, width);
+ vp_reg_write(res, VP_DST_H_POSITION, dst_x_offset);
+ if (ctx->interlace) {
+ vp_reg_write(res, VP_DST_HEIGHT, height / 2);
+ vp_reg_write(res, VP_DST_V_POSITION, dst_y_offset / 2);
+ } else {
+ vp_reg_write(res, VP_DST_HEIGHT, height);
+ vp_reg_write(res, VP_DST_V_POSITION, dst_y_offset);
+ }
+
+ vp_reg_write(res, VP_H_RATIO, x_ratio);
+ vp_reg_write(res, VP_V_RATIO, y_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_height);
+ mixer_cfg_rgb_fmt(ctx, mode_height);
+ mixer_cfg_layer(ctx, win, true);
+ mixer_run(ctx);
+
+ mixer_vsync_set_update(ctx, true);
+ spin_unlock_irqrestore(&res->reg_slock, flags);
+
+ vp_regs_dump(ctx);
+}
+
+static void mixer_graph_buffer(struct mixer_context *ctx, int win)
+{
+ struct mixer_resources *res = &ctx->mixer_res;
+ unsigned long flags;
+ struct hdmi_win_data *win_data;
+ unsigned int full_width, width, height;
+ unsigned int x_ratio, y_ratio;
+ unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
+ unsigned int mode_width, mode_height;
+ dma_addr_t dma_addr;
+ unsigned int fmt;
+ u32 val;
+
+ win_data = &ctx->win_data[win];
+
+ #define RGB565 4
+ #define ARGB1555 5
+ #define ARGB4444 6
+ #define ARGB8888 7
+
+ switch (win_data->bpp) {
+ case 16:
+ fmt = ARGB4444;
+ break;
+ case 32:
+ fmt = ARGB8888;
+ break;
+ default:
+ fmt = ARGB8888;
+ }
+
+ dma_addr = win_data->dma_addr;
+ full_width = win_data->fb_width;
+ width = win_data->crtc_width;
+ height = win_data->crtc_height;
+ mode_width = win_data->mode_width;
+ mode_height = win_data->mode_height;
+
+ /* 2x scaling feature */
+ x_ratio = 0;
+ y_ratio = 0;
+
+ src_x_offset = win_data->fb_x;
+ src_y_offset = win_data->fb_y;
+ dst_x_offset = win_data->crtc_x;
+ dst_y_offset = win_data->crtc_y;
+
+ /* converting dma address base and source offset */
+ dma_addr = dma_addr
+ + (src_x_offset * win_data->bpp >> 3)
+ + (src_y_offset * full_width * win_data->bpp >> 3);
+ src_x_offset = 0;
+ src_y_offset = 0;
+
+ if (win_data->scan_flags & DRM_MODE_FLAG_INTERLACE)
+ ctx->interlace = true;
+ else
+ ctx->interlace = false;
+
+ spin_lock_irqsave(&res->reg_slock, flags);
+ mixer_vsync_set_update(ctx, false);
+
+ /* 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), full_width);
+
+ val = MXR_GRP_WH_WIDTH(width);
+ val |= MXR_GRP_WH_HEIGHT(height);
+ 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_height);
+ mixer_cfg_rgb_fmt(ctx, mode_height);
+ mixer_cfg_layer(ctx, win, true);
+ mixer_run(ctx);
+
+ mixer_vsync_set_update(ctx, true);
+ spin_unlock_irqrestore(&res->reg_slock, flags);
+}
+
+static void vp_win_reset(struct mixer_context *ctx)
+{
+ struct mixer_resources *res = &ctx->mixer_res;
+ int tries = 100;
+
+ vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING);
+ for (tries = 100; tries; --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 int mixer_enable_vblank(void *ctx, int pipe)
+{
+ struct mixer_context *mixer_ctx = ctx;
+ struct mixer_resources *res = &mixer_ctx->mixer_res;
+
+ DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
+
+ mixer_ctx->pipe = pipe;
+
+ /* enable vsync interrupt */
+ mixer_reg_writemask(res, MXR_INT_EN, MXR_INT_EN_VSYNC,
+ MXR_INT_EN_VSYNC);
+
+ return 0;
+}
+
+static void mixer_disable_vblank(void *ctx)
+{
+ struct mixer_context *mixer_ctx = ctx;
+ struct mixer_resources *res = &mixer_ctx->mixer_res;
+
+ DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
+
+ /* disable vsync interrupt */
+ mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
+}
+
+static void mixer_win_mode_set(void *ctx,
+ struct exynos_drm_overlay *overlay)
+{
+ struct mixer_context *mixer_ctx = ctx;
+ struct hdmi_win_data *win_data;
+ int win;
+
+ DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
+
+ if (!overlay) {
+ DRM_ERROR("overlay is NULL\n");
+ return;
+ }
+
+ DRM_DEBUG_KMS("set [%d]x[%d] at (%d,%d) to [%d]x[%d] at (%d,%d)\n",
+ overlay->fb_width, overlay->fb_height,
+ overlay->fb_x, overlay->fb_y,
+ overlay->crtc_width, overlay->crtc_height,
+ overlay->crtc_x, overlay->crtc_y);
+
+ win = overlay->zpos;
+ if (win == DEFAULT_ZPOS)
+ win = mixer_ctx->default_win;
+
+ if (win < 0 || win > HDMI_OVERLAY_NUMBER) {
+ DRM_ERROR("overlay plane[%d] is wrong\n", win);
+ return;
+ }
+
+ win_data = &mixer_ctx->win_data[win];
+
+ win_data->dma_addr = overlay->dma_addr[0];
+ win_data->vaddr = overlay->vaddr[0];
+ win_data->chroma_dma_addr = overlay->dma_addr[1];
+ win_data->chroma_vaddr = overlay->vaddr[1];
+ win_data->pixel_format = overlay->pixel_format;
+ win_data->bpp = overlay->bpp;
+
+ win_data->crtc_x = overlay->crtc_x;
+ win_data->crtc_y = overlay->crtc_y;
+ win_data->crtc_width = overlay->crtc_width;
+ win_data->crtc_height = overlay->crtc_height;
+
+ win_data->fb_x = overlay->fb_x;
+ win_data->fb_y = overlay->fb_y;
+ win_data->fb_width = overlay->fb_width;
+ win_data->fb_height = overlay->fb_height;
+
+ win_data->mode_width = overlay->mode_width;
+ win_data->mode_height = overlay->mode_height;
+
+ win_data->scan_flags = overlay->scan_flag;
+}
+
+static void mixer_win_commit(void *ctx, int zpos)
+{
+ struct mixer_context *mixer_ctx = ctx;
+ int win = zpos;
+
+ DRM_DEBUG_KMS("[%d] %s, win: %d\n", __LINE__, __func__, win);
+
+ if (win == DEFAULT_ZPOS)
+ win = mixer_ctx->default_win;
+
+ if (win < 0 || win > HDMI_OVERLAY_NUMBER) {
+ DRM_ERROR("overlay plane[%d] is wrong\n", win);
+ return;
+ }
+
+ if (win > 1)
+ vp_video_buffer(mixer_ctx, win);
+ else
+ mixer_graph_buffer(mixer_ctx, win);
+}
+
+static void mixer_win_disable(void *ctx, int zpos)
+{
+ struct mixer_context *mixer_ctx = ctx;
+ struct mixer_resources *res = &mixer_ctx->mixer_res;
+ unsigned long flags;
+ int win = zpos;
+
+ DRM_DEBUG_KMS("[%d] %s, win: %d\n", __LINE__, __func__, win);
+
+ if (win == DEFAULT_ZPOS)
+ win = mixer_ctx->default_win;
+
+ if (win < 0 || win > HDMI_OVERLAY_NUMBER) {
+ DRM_ERROR("overlay plane[%d] is wrong\n", win);
+ return;
+ }
+
+ spin_lock_irqsave(&res->reg_slock, flags);
+ mixer_vsync_set_update(mixer_ctx, false);
+
+ mixer_cfg_layer(mixer_ctx, win, false);
+
+ mixer_vsync_set_update(mixer_ctx, true);
+ spin_unlock_irqrestore(&res->reg_slock, flags);
+}
+
+static struct exynos_hdmi_overlay_ops overlay_ops = {
+ .enable_vblank = mixer_enable_vblank,
+ .disable_vblank = mixer_disable_vblank,
+ .win_mode_set = mixer_win_mode_set,
+ .win_commit = mixer_win_commit,
+ .win_disable = mixer_win_disable,
+};
+
+/* for pageflip event */
+static void mixer_finish_pageflip(struct drm_device *drm_dev, int crtc)
+{
+ struct exynos_drm_private *dev_priv = drm_dev->dev_private;
+ struct drm_pending_vblank_event *e, *t;
+ struct timeval now;
+ unsigned long flags;
+ bool is_checked = false;
+
+ spin_lock_irqsave(&drm_dev->event_lock, flags);
+
+ list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list,
+ base.link) {
+ /* if event's pipe isn't same as crtc then ignore it. */
+ if (crtc != e->pipe)
+ continue;
+
+ is_checked = true;
+ do_gettimeofday(&now);
+ e->event.sequence = 0;
+ e->event.tv_sec = now.tv_sec;
+ e->event.tv_usec = now.tv_usec;
+
+ list_move_tail(&e->base.link, &e->base.file_priv->event_list);
+ wake_up_interruptible(&e->base.file_priv->event_wait);
+ }
+
+ if (is_checked)
+ drm_vblank_put(drm_dev, crtc);
+
+ spin_unlock_irqrestore(&drm_dev->event_lock, flags);
+}
+
+static irqreturn_t mixer_irq_handler(int irq, void *arg)
+{
+ struct exynos_drm_hdmi_context *drm_hdmi_ctx = arg;
+ struct mixer_context *ctx =
+ (struct mixer_context *)drm_hdmi_ctx->ctx;
+ struct mixer_resources *res = &ctx->mixer_res;
+ u32 val, val_base;
+
+ 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) {
+ /* interlace scan need to check shadow register */
+ if (ctx->interlace) {
+ val_base = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0));
+ if (ctx->win_data[0].dma_addr != val_base)
+ goto out;
+
+ val_base = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1));
+ if (ctx->win_data[1].dma_addr != val_base)
+ goto out;
+ }
+
+ drm_handle_vblank(drm_hdmi_ctx->drm_dev, ctx->pipe);
+ mixer_finish_pageflip(drm_hdmi_ctx->drm_dev, ctx->pipe);
+ }
+
+out:
+ /* clear interrupts */
+ if (~val & MXR_INT_EN_VSYNC) {
+ /* vsync interrupt use different bit for read and clear */
+ val &= ~MXR_INT_EN_VSYNC;
+ val |= MXR_INT_CLEAR_VSYNC;
+ }
+ mixer_reg_write(res, MXR_INT_STATUS, val);
+
+ spin_unlock(&res->reg_slock);
+
+ return IRQ_HANDLED;
+}
+
+static void mixer_win_reset(struct mixer_context *ctx)
+{
+ struct mixer_resources *res = &ctx->mixer_res;
+ unsigned long flags;
+ u32 val; /* value stored to register */
+
+ spin_lock_irqsave(&res->reg_slock, flags);
+ mixer_vsync_set_update(ctx, false);
+
+ 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);
+
+ /* setting default layer priority: layer1 > video > layer0
+ * because typical usage scenario would be
+ * layer0 - framebuffer
+ * video - video overlay
+ * layer1 - OSD
+ */
+ val = MXR_LAYER_CFG_GRP0_VAL(1);
+ val |= MXR_LAYER_CFG_VP_VAL(2);
+ val |= MXR_LAYER_CFG_GRP1_VAL(3);
+ mixer_reg_write(res, MXR_LAYER_CFG, val);
+
+ /* setting background color */
+ mixer_reg_write(res, MXR_BG_COLOR0, 0x008080);
+ mixer_reg_write(res, MXR_BG_COLOR1, 0x008080);
+ mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
+
+ /* setting graphical layers */
+
+ val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
+ val |= MXR_GRP_CFG_WIN_BLEND_EN;
+ val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */
+
+ /* the same configuration for both layers */
+ mixer_reg_write(res, MXR_GRAPHIC_CFG(0), val);
+
+ val |= MXR_GRP_CFG_BLEND_PRE_MUL;
+ val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
+ mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val);
+
+ /* 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);
+ mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
+
+ mixer_vsync_set_update(ctx, true);
+ spin_unlock_irqrestore(&res->reg_slock, flags);
+}
+
+static void mixer_resource_poweron(struct mixer_context *ctx)
+{
+ struct mixer_resources *res = &ctx->mixer_res;
+
+ DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
+
+ clk_enable(res->mixer);
+ clk_enable(res->vp);
+ clk_enable(res->sclk_mixer);
+
+ mixer_win_reset(ctx);
+}
+
+static void mixer_resource_poweroff(struct mixer_context *ctx)
+{
+ struct mixer_resources *res = &ctx->mixer_res;
+
+ DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
+
+ clk_disable(res->mixer);
+ clk_disable(res->vp);
+ clk_disable(res->sclk_mixer);
+}
+
+static int mixer_runtime_resume(struct device *dev)
+{
+ struct exynos_drm_hdmi_context *ctx = get_mixer_context(dev);
+
+ DRM_DEBUG_KMS("resume - start\n");
+
+ mixer_resource_poweron((struct mixer_context *)ctx->ctx);
+
+ return 0;
+}
+
+static int mixer_runtime_suspend(struct device *dev)
+{
+ struct exynos_drm_hdmi_context *ctx = get_mixer_context(dev);
+
+ DRM_DEBUG_KMS("suspend - start\n");
+
+ mixer_resource_poweroff((struct mixer_context *)ctx->ctx);
+
+ return 0;
+}
+
+static const struct dev_pm_ops mixer_pm_ops = {
+ .runtime_suspend = mixer_runtime_suspend,
+ .runtime_resume = mixer_runtime_resume,
+};
+
+static int __devinit mixer_resources_init(struct exynos_drm_hdmi_context *ctx,
+ struct platform_device *pdev)
+{
+ struct mixer_context *mixer_ctx =
+ (struct mixer_context *)ctx->ctx;
+ struct device *dev = &pdev->dev;
+ struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
+ struct resource *res;
+ int ret;
+
+ mixer_res->dev = dev;
+ spin_lock_init(&mixer_res->reg_slock);
+
+ mixer_res->mixer = clk_get(dev, "mixer");
+ if (IS_ERR_OR_NULL(mixer_res->mixer)) {
+ dev_err(dev, "failed to get clock 'mixer'\n");
+ ret = -ENODEV;
+ goto fail;
+ }
+ mixer_res->vp = clk_get(dev, "vp");
+ if (IS_ERR_OR_NULL(mixer_res->vp)) {
+ dev_err(dev, "failed to get clock 'vp'\n");
+ ret = -ENODEV;
+ goto fail;
+ }
+ mixer_res->sclk_mixer = clk_get(dev, "sclk_mixer");
+ if (IS_ERR_OR_NULL(mixer_res->sclk_mixer)) {
+ dev_err(dev, "failed to get clock 'sclk_mixer'\n");
+ ret = -ENODEV;
+ goto fail;
+ }
+ mixer_res->sclk_hdmi = clk_get(dev, "sclk_hdmi");
+ if (IS_ERR_OR_NULL(mixer_res->sclk_hdmi)) {
+ dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
+ ret = -ENODEV;
+ goto fail;
+ }
+ mixer_res->sclk_dac = clk_get(dev, "sclk_dac");
+ if (IS_ERR_OR_NULL(mixer_res->sclk_dac)) {
+ dev_err(dev, "failed to get clock 'sclk_dac'\n");
+ ret = -ENODEV;
+ goto fail;
+ }
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mxr");
+ if (res == NULL) {
+ dev_err(dev, "get memory resource failed.\n");
+ ret = -ENXIO;
+ goto fail;
+ }
+
+ clk_set_parent(mixer_res->sclk_mixer, mixer_res->sclk_hdmi);
+
+ mixer_res->mixer_regs = ioremap(res->start, resource_size(res));
+ if (mixer_res->mixer_regs == NULL) {
+ dev_err(dev, "register mapping failed.\n");
+ ret = -ENXIO;
+ goto fail;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vp");
+ if (res == NULL) {
+ dev_err(dev, "get memory resource failed.\n");
+ ret = -ENXIO;
+ goto fail_mixer_regs;
+ }
+
+ mixer_res->vp_regs = ioremap(res->start, resource_size(res));
+ if (mixer_res->vp_regs == NULL) {
+ dev_err(dev, "register mapping failed.\n");
+ ret = -ENXIO;
+ goto fail_mixer_regs;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "irq");
+ if (res == NULL) {
+ dev_err(dev, "get interrupt resource failed.\n");
+ ret = -ENXIO;
+ goto fail_vp_regs;
+ }
+
+ ret = request_irq(res->start, mixer_irq_handler, 0, "drm_mixer", ctx);
+ if (ret) {
+ dev_err(dev, "request interrupt failed.\n");
+ goto fail_vp_regs;
+ }
+ mixer_res->irq = res->start;
+
+ return 0;
+
+fail_vp_regs:
+ iounmap(mixer_res->vp_regs);
+
+fail_mixer_regs:
+ iounmap(mixer_res->mixer_regs);
+
+fail:
+ if (!IS_ERR_OR_NULL(mixer_res->sclk_dac))
+ clk_put(mixer_res->sclk_dac);
+ if (!IS_ERR_OR_NULL(mixer_res->sclk_hdmi))
+ clk_put(mixer_res->sclk_hdmi);
+ if (!IS_ERR_OR_NULL(mixer_res->sclk_mixer))
+ clk_put(mixer_res->sclk_mixer);
+ if (!IS_ERR_OR_NULL(mixer_res->vp))
+ clk_put(mixer_res->vp);
+ if (!IS_ERR_OR_NULL(mixer_res->mixer))
+ clk_put(mixer_res->mixer);
+ mixer_res->dev = NULL;
+ return ret;
+}
+
+static void mixer_resources_cleanup(struct mixer_context *ctx)
+{
+ struct mixer_resources *res = &ctx->mixer_res;
+
+ disable_irq(res->irq);
+ free_irq(res->irq, ctx);
+
+ iounmap(res->vp_regs);
+ iounmap(res->mixer_regs);
+}
+
+static int __devinit mixer_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct exynos_drm_hdmi_context *drm_hdmi_ctx;
+ struct mixer_context *ctx;
+ int ret;
+
+ dev_info(dev, "probe start\n");
+
+ drm_hdmi_ctx = kzalloc(sizeof(*drm_hdmi_ctx), GFP_KERNEL);
+ if (!drm_hdmi_ctx) {
+ DRM_ERROR("failed to allocate common hdmi context.\n");
+ return -ENOMEM;
+ }
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx) {
+ DRM_ERROR("failed to alloc mixer context.\n");
+ kfree(drm_hdmi_ctx);
+ return -ENOMEM;
+ }
+
+ drm_hdmi_ctx->ctx = (void *)ctx;
+
+ platform_set_drvdata(pdev, drm_hdmi_ctx);
+
+ /* acquire resources: regs, irqs, clocks */
+ ret = mixer_resources_init(drm_hdmi_ctx, pdev);
+ if (ret)
+ goto fail;
+
+ /* register specific callback point to common hdmi. */
+ exynos_drm_overlay_ops_register(&overlay_ops);
+
+ mixer_resource_poweron(ctx);
+
+ return 0;
+
+
+fail:
+ dev_info(dev, "probe failed\n");
+ return ret;
+}
+
+static int mixer_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct exynos_drm_hdmi_context *drm_hdmi_ctx =
+ platform_get_drvdata(pdev);
+ struct mixer_context *ctx = (struct mixer_context *)drm_hdmi_ctx->ctx;
+
+ dev_info(dev, "remove sucessful\n");
+
+ mixer_resource_poweroff(ctx);
+ mixer_resources_cleanup(ctx);
+
+ return 0;
+}
+
+struct platform_driver mixer_driver = {
+ .driver = {
+ .name = "s5p-mixer",
+ .owner = THIS_MODULE,
+ .pm = &mixer_pm_ops,
+ },
+ .probe = mixer_probe,
+ .remove = __devexit_p(mixer_remove),
+};
+EXPORT_SYMBOL(mixer_driver);
+
+MODULE_AUTHOR("Seung-Woo Kim, <sw0312.kim@samsung.com>");
+MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
+MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
+MODULE_DESCRIPTION("Samsung DRM HDMI mixer Driver");
+MODULE_LICENSE("GPL");