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path: root/drivers/media/platform/s5p-tv/mixer_reg.c
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Diffstat (limited to 'drivers/media/platform/s5p-tv/mixer_reg.c')
-rw-r--r--drivers/media/platform/s5p-tv/mixer_reg.c553
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 000000000000..3b1670a045f4
--- /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);
+}
+