1 files changed, 553 insertions, 0 deletions

diff --git a/drivers/media/platform/s5p-tv/mixer_reg.c b/drivers/media/platform/s5p-tv/mixer_reg.c
new file mode 100644
index 0000000..b713403
--- /dev/null
+++ b/drivers/media/platform/s5p-tv/mixer_reg.c
@@ -0,0 +1,553 @@
+/*
+ * Samsung TV Mixer driver
+ *
+ * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+ *
+ * Tomasz Stanislawski, <t.stanislaws@samsung.com>
+ *
+ * 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 Foundiation. either version 2 of the License,
+ * or (at your option) any later version
+ */
+
+#include "mixer.h"
+#include "regs-mixer.h"
+#include "regs-vp.h"
+
+#include <linux/delay.h>
+
+/* Register access subroutines */
+
+static inline u32 vp_read(struct mxr_device *mdev, u32 reg_id)
+{
+	return readl(mdev->res.vp_regs + reg_id);
+}
+
+static inline void vp_write(struct mxr_device *mdev, u32 reg_id, u32 val)
+{
+	writel(val, mdev->res.vp_regs + reg_id);
+}
+
+static inline void vp_write_mask(struct mxr_device *mdev, u32 reg_id,
+	u32 val, u32 mask)
+{
+	u32 old = vp_read(mdev, reg_id);
+
+	val = (val & mask) | (old & ~mask);
+	writel(val, mdev->res.vp_regs + reg_id);
+}
+
+static inline u32 mxr_read(struct mxr_device *mdev, u32 reg_id)
+{
+	return readl(mdev->res.mxr_regs + reg_id);
+}
+
+static inline void mxr_write(struct mxr_device *mdev, u32 reg_id, u32 val)
+{
+	writel(val, mdev->res.mxr_regs + reg_id);
+}
+
+static inline void mxr_write_mask(struct mxr_device *mdev, u32 reg_id,
+	u32 val, u32 mask)
+{
+	u32 old = mxr_read(mdev, reg_id);
+
+	val = (val & mask) | (old & ~mask);
+	writel(val, mdev->res.mxr_regs + reg_id);
+}
+
+void mxr_vsync_set_update(struct mxr_device *mdev, int en)
+{
+	/* block update on vsync */
+	mxr_write_mask(mdev, MXR_STATUS, en ? MXR_STATUS_SYNC_ENABLE : 0,
+		MXR_STATUS_SYNC_ENABLE);
+	vp_write(mdev, VP_SHADOW_UPDATE, en ? VP_SHADOW_UPDATE_ENABLE : 0);
+}
+
+static void __mxr_reg_vp_reset(struct mxr_device *mdev)
+{
+	int tries = 100;
+
+	vp_write(mdev, VP_SRESET, VP_SRESET_PROCESSING);
+	for (tries = 100; tries; --tries) {
+		/* waiting until VP_SRESET_PROCESSING is 0 */
+		if (~vp_read(mdev, VP_SRESET) & VP_SRESET_PROCESSING)
+			break;
+		mdelay(10);
+	}
+	WARN(tries == 0, "failed to reset Video Processor\n");
+}
+
+static void mxr_reg_vp_default_filter(struct mxr_device *mdev);
+
+void mxr_reg_reset(struct mxr_device *mdev)
+{
+	unsigned long flags;
+	u32 val; /* value stored to register */
+
+	spin_lock_irqsave(&mdev->reg_slock, flags);
+	mxr_vsync_set_update(mdev, MXR_DISABLE);
+
+	/* set output in RGB888 mode */
+	mxr_write(mdev, MXR_CFG, MXR_CFG_OUT_RGB888);
+
+	/* 16 beat burst in DMA */
+	mxr_write_mask(mdev, 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);
+	mxr_write(mdev, MXR_LAYER_CFG, val);
+
+	/* use dark gray background color */
+	mxr_write(mdev, MXR_BG_COLOR0, 0x808080);
+	mxr_write(mdev, MXR_BG_COLOR1, 0x808080);
+	mxr_write(mdev, MXR_BG_COLOR2, 0x808080);
+
+	/* setting graphical layers */
+
+	val  = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
+	val |= MXR_GRP_CFG_BLEND_PRE_MUL; /* premul mode */
+	val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */
+
+	/* the same configuration for both layers */
+	mxr_write(mdev, MXR_GRAPHIC_CFG(0), val);
+	mxr_write(mdev, MXR_GRAPHIC_CFG(1), val);
+
+	/* configuration of Video Processor Registers */
+	__mxr_reg_vp_reset(mdev);
+	mxr_reg_vp_default_filter(mdev);
+
+	/* enable all interrupts */
+	mxr_write_mask(mdev, MXR_INT_EN, ~0, MXR_INT_EN_ALL);
+
+	mxr_vsync_set_update(mdev, MXR_ENABLE);
+	spin_unlock_irqrestore(&mdev->reg_slock, flags);
+}
+
+void mxr_reg_graph_format(struct mxr_device *mdev, int idx,
+	const struct mxr_format *fmt, const struct mxr_geometry *geo)
+{
+	u32 val;
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdev->reg_slock, flags);
+	mxr_vsync_set_update(mdev, MXR_DISABLE);
+
+	/* setup format */
+	mxr_write_mask(mdev, MXR_GRAPHIC_CFG(idx),
+		MXR_GRP_CFG_FORMAT_VAL(fmt->cookie), MXR_GRP_CFG_FORMAT_MASK);
+
+	/* setup geometry */
+	mxr_write(mdev, MXR_GRAPHIC_SPAN(idx), geo->src.full_width);
+	val  = MXR_GRP_WH_WIDTH(geo->src.width);
+	val |= MXR_GRP_WH_HEIGHT(geo->src.height);
+	val |= MXR_GRP_WH_H_SCALE(geo->x_ratio);
+	val |= MXR_GRP_WH_V_SCALE(geo->y_ratio);
+	mxr_write(mdev, MXR_GRAPHIC_WH(idx), val);
+
+	/* setup offsets in source image */
+	val  = MXR_GRP_SXY_SX(geo->src.x_offset);
+	val |= MXR_GRP_SXY_SY(geo->src.y_offset);
+	mxr_write(mdev, MXR_GRAPHIC_SXY(idx), val);
+
+	/* setup offsets in display image */
+	val  = MXR_GRP_DXY_DX(geo->dst.x_offset);
+	val |= MXR_GRP_DXY_DY(geo->dst.y_offset);
+	mxr_write(mdev, MXR_GRAPHIC_DXY(idx), val);
+
+	mxr_vsync_set_update(mdev, MXR_ENABLE);
+	spin_unlock_irqrestore(&mdev->reg_slock, flags);
+}
+
+void mxr_reg_vp_format(struct mxr_device *mdev,
+	const struct mxr_format *fmt, const struct mxr_geometry *geo)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdev->reg_slock, flags);
+	mxr_vsync_set_update(mdev, MXR_DISABLE);
+
+	vp_write_mask(mdev, VP_MODE, fmt->cookie, VP_MODE_FMT_MASK);
+
+	/* setting size of input image */
+	vp_write(mdev, VP_IMG_SIZE_Y, VP_IMG_HSIZE(geo->src.full_width) |
+		VP_IMG_VSIZE(geo->src.full_height));
+	/* chroma height has to reduced by 2 to avoid chroma distorions */
+	vp_write(mdev, VP_IMG_SIZE_C, VP_IMG_HSIZE(geo->src.full_width) |
+		VP_IMG_VSIZE(geo->src.full_height / 2));
+
+	vp_write(mdev, VP_SRC_WIDTH, geo->src.width);
+	vp_write(mdev, VP_SRC_HEIGHT, geo->src.height);
+	vp_write(mdev, VP_SRC_H_POSITION,
+		VP_SRC_H_POSITION_VAL(geo->src.x_offset));
+	vp_write(mdev, VP_SRC_V_POSITION, geo->src.y_offset);
+
+	vp_write(mdev, VP_DST_WIDTH, geo->dst.width);
+	vp_write(mdev, VP_DST_H_POSITION, geo->dst.x_offset);
+	if (geo->dst.field == V4L2_FIELD_INTERLACED) {
+		vp_write(mdev, VP_DST_HEIGHT, geo->dst.height / 2);
+		vp_write(mdev, VP_DST_V_POSITION, geo->dst.y_offset / 2);
+	} else {
+		vp_write(mdev, VP_DST_HEIGHT, geo->dst.height);
+		vp_write(mdev, VP_DST_V_POSITION, geo->dst.y_offset);
+	}
+
+	vp_write(mdev, VP_H_RATIO, geo->x_ratio);
+	vp_write(mdev, VP_V_RATIO, geo->y_ratio);
+
+	vp_write(mdev, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
+
+	mxr_vsync_set_update(mdev, MXR_ENABLE);
+	spin_unlock_irqrestore(&mdev->reg_slock, flags);
+
+}
+
+void mxr_reg_graph_buffer(struct mxr_device *mdev, int idx, dma_addr_t addr)
+{
+	u32 val = addr ? ~0 : 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdev->reg_slock, flags);
+	mxr_vsync_set_update(mdev, MXR_DISABLE);
+
+	if (idx == 0)
+		mxr_write_mask(mdev, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
+	else
+		mxr_write_mask(mdev, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
+	mxr_write(mdev, MXR_GRAPHIC_BASE(idx), addr);
+
+	mxr_vsync_set_update(mdev, MXR_ENABLE);
+	spin_unlock_irqrestore(&mdev->reg_slock, flags);
+}
+
+void mxr_reg_vp_buffer(struct mxr_device *mdev,
+	dma_addr_t luma_addr[2], dma_addr_t chroma_addr[2])
+{
+	u32 val = luma_addr[0] ? ~0 : 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdev->reg_slock, flags);
+	mxr_vsync_set_update(mdev, MXR_DISABLE);
+
+	mxr_write_mask(mdev, MXR_CFG, val, MXR_CFG_VP_ENABLE);
+	vp_write_mask(mdev, VP_ENABLE, val, VP_ENABLE_ON);
+	/* TODO: fix tiled mode */
+	vp_write(mdev, VP_TOP_Y_PTR, luma_addr[0]);
+	vp_write(mdev, VP_TOP_C_PTR, chroma_addr[0]);
+	vp_write(mdev, VP_BOT_Y_PTR, luma_addr[1]);
+	vp_write(mdev, VP_BOT_C_PTR, chroma_addr[1]);
+
+	mxr_vsync_set_update(mdev, MXR_ENABLE);
+	spin_unlock_irqrestore(&mdev->reg_slock, flags);
+}
+
+static void mxr_irq_layer_handle(struct mxr_layer *layer)
+{
+	struct list_head *head = &layer->enq_list;
+	struct mxr_buffer *done;
+
+	/* skip non-existing layer */
+	if (layer == NULL)
+		return;
+
+	spin_lock(&layer->enq_slock);
+	if (layer->state == MXR_LAYER_IDLE)
+		goto done;
+
+	done = layer->shadow_buf;
+	layer->shadow_buf = layer->update_buf;
+
+	if (list_empty(head)) {
+		if (layer->state != MXR_LAYER_STREAMING)
+			layer->update_buf = NULL;
+	} else {
+		struct mxr_buffer *next;
+		next = list_first_entry(head, struct mxr_buffer, list);
+		list_del(&next->list);
+		layer->update_buf = next;
+	}
+
+	layer->ops.buffer_set(layer, layer->update_buf);
+
+	if (done && done != layer->shadow_buf)
+		vb2_buffer_done(&done->vb, VB2_BUF_STATE_DONE);
+
+done:
+	spin_unlock(&layer->enq_slock);
+}
+
+irqreturn_t mxr_irq_handler(int irq, void *dev_data)
+{
+	struct mxr_device *mdev = dev_data;
+	u32 i, val;
+
+	spin_lock(&mdev->reg_slock);
+	val = mxr_read(mdev, MXR_INT_STATUS);
+
+	/* wake up process waiting for VSYNC */
+	if (val & MXR_INT_STATUS_VSYNC) {
+		set_bit(MXR_EVENT_VSYNC, &mdev->event_flags);
+		/* toggle TOP field event if working in interlaced mode */
+		if (~mxr_read(mdev, MXR_CFG) & MXR_CFG_SCAN_PROGRASSIVE)
+			change_bit(MXR_EVENT_TOP, &mdev->event_flags);
+		wake_up(&mdev->event_queue);
+		/* vsync interrupt use different bit for read and clear */
+		val &= ~MXR_INT_STATUS_VSYNC;
+		val |= MXR_INT_CLEAR_VSYNC;
+	}
+
+	/* clear interrupts */
+	mxr_write(mdev, MXR_INT_STATUS, val);
+
+	spin_unlock(&mdev->reg_slock);
+	/* leave on non-vsync event */
+	if (~val & MXR_INT_CLEAR_VSYNC)
+		return IRQ_HANDLED;
+	/* skip layer update on bottom field */
+	if (!test_bit(MXR_EVENT_TOP, &mdev->event_flags))
+		return IRQ_HANDLED;
+	for (i = 0; i < MXR_MAX_LAYERS; ++i)
+		mxr_irq_layer_handle(mdev->layer[i]);
+	return IRQ_HANDLED;
+}
+
+void mxr_reg_s_output(struct mxr_device *mdev, int cookie)
+{
+	u32 val;
+
+	val = cookie == 0 ? MXR_CFG_DST_SDO : MXR_CFG_DST_HDMI;
+	mxr_write_mask(mdev, MXR_CFG, val, MXR_CFG_DST_MASK);
+}
+
+void mxr_reg_streamon(struct mxr_device *mdev)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdev->reg_slock, flags);
+	/* single write -> no need to block vsync update */
+
+	/* start MIXER */
+	mxr_write_mask(mdev, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
+	set_bit(MXR_EVENT_TOP, &mdev->event_flags);
+
+	spin_unlock_irqrestore(&mdev->reg_slock, flags);
+}
+
+void mxr_reg_streamoff(struct mxr_device *mdev)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdev->reg_slock, flags);
+	/* single write -> no need to block vsync update */
+
+	/* stop MIXER */
+	mxr_write_mask(mdev, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
+
+	spin_unlock_irqrestore(&mdev->reg_slock, flags);
+}
+
+int mxr_reg_wait4vsync(struct mxr_device *mdev)
+{
+	int ret;
+
+	clear_bit(MXR_EVENT_VSYNC, &mdev->event_flags);
+	/* TODO: consider adding interruptible */
+	ret = wait_event_timeout(mdev->event_queue,
+		test_bit(MXR_EVENT_VSYNC, &mdev->event_flags),
+		msecs_to_jiffies(1000));
+	if (ret > 0)
+		return 0;
+	if (ret < 0)
+		return ret;
+	mxr_warn(mdev, "no vsync detected - timeout\n");
+	return -ETIME;
+}
+
+void mxr_reg_set_mbus_fmt(struct mxr_device *mdev,
+	struct v4l2_mbus_framefmt *fmt)
+{
+	u32 val = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdev->reg_slock, flags);
+	mxr_vsync_set_update(mdev, MXR_DISABLE);
+
+	/* selecting colorspace accepted by output */
+	if (fmt->colorspace == V4L2_COLORSPACE_JPEG)
+		val |= MXR_CFG_OUT_YUV444;
+	else
+		val |= MXR_CFG_OUT_RGB888;
+
+	/* choosing between interlace and progressive mode */
+	if (fmt->field == V4L2_FIELD_INTERLACED)
+		val |= MXR_CFG_SCAN_INTERLACE;
+	else
+		val |= MXR_CFG_SCAN_PROGRASSIVE;
+
+	/* choosing between porper HD and SD mode */
+	if (fmt->height == 480)
+		val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
+	else if (fmt->height == 576)
+		val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
+	else if (fmt->height == 720)
+		val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
+	else if (fmt->height == 1080)
+		val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
+	else
+		WARN(1, "unrecognized mbus height %u!\n", fmt->height);
+
+	mxr_write_mask(mdev, MXR_CFG, val, MXR_CFG_SCAN_MASK |
+		MXR_CFG_OUT_MASK);
+
+	val = (fmt->field == V4L2_FIELD_INTERLACED) ? ~0 : 0;
+	vp_write_mask(mdev, VP_MODE, val,
+		VP_MODE_LINE_SKIP | VP_MODE_FIELD_ID_AUTO_TOGGLING);
+
+	mxr_vsync_set_update(mdev, MXR_ENABLE);
+	spin_unlock_irqrestore(&mdev->reg_slock, flags);
+}
+
+void mxr_reg_graph_layer_stream(struct mxr_device *mdev, int idx, int en)
+{
+	/* no extra actions need to be done */
+}
+
+void mxr_reg_vp_layer_stream(struct mxr_device *mdev, int en)
+{
+	/* no extra actions need to be done */
+}
+
+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 void mxr_reg_vp_filter_set(struct mxr_device *mdev,
+	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_write(mdev, reg_id, val);
+	}
+}
+
+static void mxr_reg_vp_default_filter(struct mxr_device *mdev)
+{
+	mxr_reg_vp_filter_set(mdev, VP_POLY8_Y0_LL,
+		filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
+	mxr_reg_vp_filter_set(mdev, VP_POLY4_Y0_LL,
+		filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
+	mxr_reg_vp_filter_set(mdev, VP_POLY4_C0_LL,
+		filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
+}
+
+static void mxr_reg_mxr_dump(struct mxr_device *mdev)
+{
+#define DUMPREG(reg_id) \
+do { \
+	mxr_dbg(mdev, #reg_id " = %08x\n", \
+		(u32)readl(mdev->res.mxr_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 mxr_reg_vp_dump(struct mxr_device *mdev)
+{
+#define DUMPREG(reg_id) \
+do { \
+	mxr_dbg(mdev, #reg_id " = %08x\n", \
+		(u32) readl(mdev->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
+}
+
+void mxr_reg_dump(struct mxr_device *mdev)
+{
+	mxr_reg_mxr_dump(mdev);
+	mxr_reg_vp_dump(mdev);
+}
+