diff options
Diffstat (limited to 'drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c')
| -rw-r--r-- | drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c | 364 |
1 files changed, 356 insertions, 8 deletions
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c index 638d4ab33acd..83391a24d596 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c @@ -198,18 +198,366 @@ sun6i_csi_capture_buffer_configure(struct sun6i_csi_device *csi_dev, } } -static void sun6i_csi_capture_configure(struct sun6i_csi_device *csi_dev) +static enum csi_input_fmt get_csi_input_format(struct sun6i_csi_device *csi_dev, + u32 mbus_code, u32 pixformat) +{ + /* non-YUV */ + if ((mbus_code & 0xF000) != 0x2000) + return CSI_INPUT_FORMAT_RAW; + + switch (pixformat) { + case V4L2_PIX_FMT_YUYV: + case V4L2_PIX_FMT_YVYU: + case V4L2_PIX_FMT_UYVY: + case V4L2_PIX_FMT_VYUY: + return CSI_INPUT_FORMAT_RAW; + default: + break; + } + + /* not support YUV420 input format yet */ + dev_dbg(csi_dev->dev, "Select YUV422 as default input format of CSI.\n"); + return CSI_INPUT_FORMAT_YUV422; +} + +static enum csi_output_fmt +get_csi_output_format(struct sun6i_csi_device *csi_dev, u32 pixformat, + u32 field) +{ + bool buf_interlaced = false; + + if (field == V4L2_FIELD_INTERLACED + || field == V4L2_FIELD_INTERLACED_TB + || field == V4L2_FIELD_INTERLACED_BT) + buf_interlaced = true; + + switch (pixformat) { + case V4L2_PIX_FMT_SBGGR8: + case V4L2_PIX_FMT_SGBRG8: + case V4L2_PIX_FMT_SGRBG8: + case V4L2_PIX_FMT_SRGGB8: + return buf_interlaced ? CSI_FRAME_RAW_8 : CSI_FIELD_RAW_8; + case V4L2_PIX_FMT_SBGGR10: + case V4L2_PIX_FMT_SGBRG10: + case V4L2_PIX_FMT_SGRBG10: + case V4L2_PIX_FMT_SRGGB10: + return buf_interlaced ? CSI_FRAME_RAW_10 : CSI_FIELD_RAW_10; + case V4L2_PIX_FMT_SBGGR12: + case V4L2_PIX_FMT_SGBRG12: + case V4L2_PIX_FMT_SGRBG12: + case V4L2_PIX_FMT_SRGGB12: + return buf_interlaced ? CSI_FRAME_RAW_12 : CSI_FIELD_RAW_12; + + case V4L2_PIX_FMT_YUYV: + case V4L2_PIX_FMT_YVYU: + case V4L2_PIX_FMT_UYVY: + case V4L2_PIX_FMT_VYUY: + return buf_interlaced ? CSI_FRAME_RAW_8 : CSI_FIELD_RAW_8; + + case V4L2_PIX_FMT_NV12_16L16: + return buf_interlaced ? CSI_FRAME_MB_YUV420 : + CSI_FIELD_MB_YUV420; + case V4L2_PIX_FMT_NV12: + case V4L2_PIX_FMT_NV21: + return buf_interlaced ? CSI_FRAME_UV_CB_YUV420 : + CSI_FIELD_UV_CB_YUV420; + case V4L2_PIX_FMT_YUV420: + case V4L2_PIX_FMT_YVU420: + return buf_interlaced ? CSI_FRAME_PLANAR_YUV420 : + CSI_FIELD_PLANAR_YUV420; + case V4L2_PIX_FMT_NV16: + case V4L2_PIX_FMT_NV61: + return buf_interlaced ? CSI_FRAME_UV_CB_YUV422 : + CSI_FIELD_UV_CB_YUV422; + case V4L2_PIX_FMT_YUV422P: + return buf_interlaced ? CSI_FRAME_PLANAR_YUV422 : + CSI_FIELD_PLANAR_YUV422; + + case V4L2_PIX_FMT_RGB565: + case V4L2_PIX_FMT_RGB565X: + return buf_interlaced ? CSI_FRAME_RGB565 : CSI_FIELD_RGB565; + + case V4L2_PIX_FMT_JPEG: + return buf_interlaced ? CSI_FRAME_RAW_8 : CSI_FIELD_RAW_8; + + default: + dev_warn(csi_dev->dev, "Unsupported pixformat: 0x%x\n", pixformat); + break; + } + + return CSI_FIELD_RAW_8; +} + +static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_device *csi_dev, + u32 mbus_code, u32 pixformat) +{ + /* Input sequence does not apply to non-YUV formats */ + if ((mbus_code & 0xF000) != 0x2000) + return 0; + + switch (pixformat) { + case V4L2_PIX_FMT_NV12_16L16: + case V4L2_PIX_FMT_NV12: + case V4L2_PIX_FMT_NV16: + case V4L2_PIX_FMT_YUV420: + case V4L2_PIX_FMT_YUV422P: + switch (mbus_code) { + case MEDIA_BUS_FMT_UYVY8_2X8: + case MEDIA_BUS_FMT_UYVY8_1X16: + return CSI_INPUT_SEQ_UYVY; + case MEDIA_BUS_FMT_VYUY8_2X8: + case MEDIA_BUS_FMT_VYUY8_1X16: + return CSI_INPUT_SEQ_VYUY; + case MEDIA_BUS_FMT_YUYV8_2X8: + case MEDIA_BUS_FMT_YUYV8_1X16: + return CSI_INPUT_SEQ_YUYV; + case MEDIA_BUS_FMT_YVYU8_1X16: + case MEDIA_BUS_FMT_YVYU8_2X8: + return CSI_INPUT_SEQ_YVYU; + default: + dev_warn(csi_dev->dev, "Unsupported mbus code: 0x%x\n", + mbus_code); + break; + } + break; + case V4L2_PIX_FMT_NV21: + case V4L2_PIX_FMT_NV61: + case V4L2_PIX_FMT_YVU420: + switch (mbus_code) { + case MEDIA_BUS_FMT_UYVY8_2X8: + case MEDIA_BUS_FMT_UYVY8_1X16: + return CSI_INPUT_SEQ_VYUY; + case MEDIA_BUS_FMT_VYUY8_2X8: + case MEDIA_BUS_FMT_VYUY8_1X16: + return CSI_INPUT_SEQ_UYVY; + case MEDIA_BUS_FMT_YUYV8_2X8: + case MEDIA_BUS_FMT_YUYV8_1X16: + return CSI_INPUT_SEQ_YVYU; + case MEDIA_BUS_FMT_YVYU8_1X16: + case MEDIA_BUS_FMT_YVYU8_2X8: + return CSI_INPUT_SEQ_YUYV; + default: + dev_warn(csi_dev->dev, "Unsupported mbus code: 0x%x\n", + mbus_code); + break; + } + break; + + case V4L2_PIX_FMT_YUYV: + return CSI_INPUT_SEQ_YUYV; + + default: + dev_warn(csi_dev->dev, "Unsupported pixformat: 0x%x, defaulting to YUYV\n", + pixformat); + break; + } + + return CSI_INPUT_SEQ_YUYV; +} + +static void +sun6i_csi_capture_configure_interface(struct sun6i_csi_device *csi_dev) +{ + struct v4l2_fwnode_endpoint *endpoint = + &csi_dev->bridge.source_parallel.endpoint; + u32 pixelformat, field; + unsigned char bus_width; + u32 flags; + u32 cfg = 0; + bool input_interlaced = false; + + sun6i_csi_capture_format(csi_dev, &pixelformat, &field); + + if (field == V4L2_FIELD_INTERLACED || + field == V4L2_FIELD_INTERLACED_TB || + field == V4L2_FIELD_INTERLACED_BT) + input_interlaced = true; + + bus_width = endpoint->bus.parallel.bus_width; + + if (input_interlaced) + cfg |= SUN6I_CSI_IF_CFG_SRC_TYPE_INTERLACED | + SUN6I_CSI_IF_CFG_FIELD_DT_PCLK_SHIFT(1) | + SUN6I_CSI_IF_CFG_FIELD_DT_FIELD_VSYNC; + else + cfg |= SUN6I_CSI_IF_CFG_SRC_TYPE_PROGRESSIVE; + + switch (endpoint->bus_type) { + case V4L2_MBUS_PARALLEL: + cfg |= SUN6I_CSI_IF_CFG_IF_CSI; + + flags = endpoint->bus.parallel.flags; + + if (bus_width == 16) + cfg |= SUN6I_CSI_IF_CFG_IF_CSI_YUV_COMBINED; + else + cfg |= SUN6I_CSI_IF_CFG_IF_CSI_YUV_RAW; + + if (flags & V4L2_MBUS_FIELD_EVEN_LOW) + cfg |= SUN6I_CSI_IF_CFG_FIELD_NEGATIVE; + else + cfg |= SUN6I_CSI_IF_CFG_FIELD_POSITIVE; + + if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) + cfg |= SUN6I_CSI_IF_CFG_VREF_POL_NEGATIVE; + else + cfg |= SUN6I_CSI_IF_CFG_VREF_POL_POSITIVE; + + if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) + cfg |= SUN6I_CSI_IF_CFG_HREF_POL_NEGATIVE; + else + cfg |= SUN6I_CSI_IF_CFG_HREF_POL_POSITIVE; + + if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING) + cfg |= SUN6I_CSI_IF_CFG_CLK_POL_RISING; + else + cfg |= SUN6I_CSI_IF_CFG_CLK_POL_FALLING; + break; + case V4L2_MBUS_BT656: + cfg |= SUN6I_CSI_IF_CFG_IF_CSI; + + flags = endpoint->bus.parallel.flags; + + if (bus_width == 16) + cfg |= SUN6I_CSI_IF_CFG_IF_CSI_BT1120; + else + cfg |= SUN6I_CSI_IF_CFG_IF_CSI_BT656; + + if (flags & V4L2_MBUS_FIELD_EVEN_LOW) + cfg |= SUN6I_CSI_IF_CFG_FIELD_NEGATIVE; + else + cfg |= SUN6I_CSI_IF_CFG_FIELD_POSITIVE; + + if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) + cfg |= SUN6I_CSI_IF_CFG_CLK_POL_RISING; + else + cfg |= SUN6I_CSI_IF_CFG_CLK_POL_FALLING; + break; + default: + dev_warn(csi_dev->dev, "Unsupported bus type: %d\n", + endpoint->bus_type); + break; + } + + switch (bus_width) { + case 8: + cfg |= SUN6I_CSI_IF_CFG_DATA_WIDTH_8; + break; + case 10: + cfg |= SUN6I_CSI_IF_CFG_DATA_WIDTH_10; + break; + case 12: + cfg |= SUN6I_CSI_IF_CFG_DATA_WIDTH_12; + break; + case 16: /* No need to configure DATA_WIDTH for 16bit */ + break; + default: + dev_warn(csi_dev->dev, "Unsupported bus width: %u\n", bus_width); + break; + } + + regmap_write(csi_dev->regmap, SUN6I_CSI_IF_CFG_REG, cfg); +} + +static void sun6i_csi_capture_configure_format(struct sun6i_csi_device *csi_dev) { struct sun6i_csi_capture *capture = &csi_dev->capture; - struct sun6i_csi_config config = { 0 }; + u32 pixelformat, field; + u32 cfg = 0; + u32 val; + + sun6i_csi_capture_format(csi_dev, &pixelformat, &field); + + val = get_csi_input_format(csi_dev, capture->mbus_code, pixelformat); + cfg |= SUN6I_CSI_CH_CFG_INPUT_FMT(val); + + val = get_csi_output_format(csi_dev, pixelformat, field); + cfg |= SUN6I_CSI_CH_CFG_OUTPUT_FMT(val); - config.pixelformat = capture->format.fmt.pix.pixelformat; - config.code = capture->mbus_code; - config.field = capture->format.fmt.pix.field; - config.width = capture->format.fmt.pix.width; - config.height = capture->format.fmt.pix.height; + val = get_csi_input_seq(csi_dev, capture->mbus_code, pixelformat); + cfg |= SUN6I_CSI_CH_CFG_INPUT_YUV_SEQ(val); - sun6i_csi_update_config(csi_dev, &config); + if (field == V4L2_FIELD_TOP) + cfg |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD0; + else if (field == V4L2_FIELD_BOTTOM) + cfg |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD1; + else + cfg |= SUN6I_CSI_CH_CFG_FIELD_SEL_EITHER; + + regmap_write(csi_dev->regmap, SUN6I_CSI_CH_CFG_REG, cfg); +} + +static void sun6i_csi_capture_configure_window(struct sun6i_csi_device *csi_dev) +{ + u32 pixelformat, field; + u32 width, height; + u32 bytesperline_y; + u32 bytesperline_c; + u32 hor_len; + + sun6i_csi_capture_dimensions(csi_dev, &width, &height); + sun6i_csi_capture_format(csi_dev, &pixelformat, &field); + + hor_len = width; + + switch (pixelformat) { + case V4L2_PIX_FMT_YUYV: + case V4L2_PIX_FMT_YVYU: + case V4L2_PIX_FMT_UYVY: + case V4L2_PIX_FMT_VYUY: + dev_dbg(csi_dev->dev, + "Horizontal length should be 2 times of width for packed YUV formats!\n"); + hor_len = width * 2; + break; + default: + break; + } + + regmap_write(csi_dev->regmap, SUN6I_CSI_CH_HSIZE_REG, + SUN6I_CSI_CH_HSIZE_LEN(hor_len) | + SUN6I_CSI_CH_HSIZE_START(0)); + regmap_write(csi_dev->regmap, SUN6I_CSI_CH_VSIZE_REG, + SUN6I_CSI_CH_VSIZE_LEN(height) | + SUN6I_CSI_CH_VSIZE_START(0)); + + switch (pixelformat) { + case V4L2_PIX_FMT_NV12_16L16: + case V4L2_PIX_FMT_NV12: + case V4L2_PIX_FMT_NV21: + case V4L2_PIX_FMT_NV16: + case V4L2_PIX_FMT_NV61: + bytesperline_y = width; + bytesperline_c = width; + break; + case V4L2_PIX_FMT_YUV420: + case V4L2_PIX_FMT_YVU420: + bytesperline_y = width; + bytesperline_c = width / 2; + break; + case V4L2_PIX_FMT_YUV422P: + bytesperline_y = width; + bytesperline_c = width / 2; + break; + default: /* raw */ + dev_dbg(csi_dev->dev, + "Calculating pixelformat(0x%x)'s bytesperline as a packed format\n", + pixelformat); + bytesperline_y = (sun6i_csi_get_bpp(pixelformat) * + width) / 8; + bytesperline_c = 0; + break; + } + + regmap_write(csi_dev->regmap, SUN6I_CSI_CH_BUF_LEN_REG, + SUN6I_CSI_CH_BUF_LEN_CHROMA_LINE(bytesperline_c) | + SUN6I_CSI_CH_BUF_LEN_LUMA_LINE(bytesperline_y)); +} + +static void sun6i_csi_capture_configure(struct sun6i_csi_device *csi_dev) +{ + sun6i_csi_capture_configure_interface(csi_dev); + sun6i_csi_capture_configure_format(csi_dev); + sun6i_csi_capture_configure_window(csi_dev); } /* State */ |