diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 17:31:16 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-15 16:43:09 -0300 |
commit | 2c3fb08b3f74b8792004095a1f6881a3296ff643 (patch) | |
tree | 19be9d09c4aa66d4363ee9d38a43721f5d6b144f /drivers/media/platform/s5p-tv/mixer_reg.c | |
parent | 2a2d1cf46500ab7599d0b45ee837f3936763ccac (diff) |
[media] rename drivers/media/video as .../platform
The remaining drivers are mostly platform drivers. Name the
dir to reflect it.
It makes sense to latter break it into a few other dirs.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/platform/s5p-tv/mixer_reg.c')
-rw-r--r-- | drivers/media/platform/s5p-tv/mixer_reg.c | 553 |
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); +} + |