[PATCH v2 43/66] media: sun6i-csi: Tidy capture configure code
Paul Kocialkowski
paul.kocialkowski at bootlin.com
Sat Feb 5 10:54:06 PST 2022
Some misc code cleanups and preparation for upcoming changes.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski at bootlin.com>
---
.../sunxi/sun6i-csi/sun6i_csi_capture.c | 105 ++++++++----------
1 file changed, 46 insertions(+), 59 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 12c02408d18e..726416d98c46 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
@@ -353,133 +353,120 @@ static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_device *csi_dev,
static void
sun6i_csi_capture_configure_interface(struct sun6i_csi_device *csi_dev)
{
+ struct device *dev = csi_dev->dev;
+ struct regmap *regmap = csi_dev->regmap;
struct v4l2_fwnode_endpoint *endpoint =
&csi_dev->bridge.source->endpoint;
+ unsigned char bus_width = endpoint->bus.parallel.bus_width;
+ unsigned int flags = endpoint->bus.parallel.flags;
u32 pixelformat, field;
- unsigned char bus_width;
- u32 flags;
- u32 cfg = 0;
- bool input_interlaced = false;
+ u32 value = SUN6I_CSI_IF_CFG_IF_CSI;
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;
+ value |= 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;
+ value |= 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;
+ value |= SUN6I_CSI_IF_CFG_IF_CSI_YUV_COMBINED;
else
- cfg |= SUN6I_CSI_IF_CFG_IF_CSI_YUV_RAW;
+ value |= SUN6I_CSI_IF_CFG_IF_CSI_YUV_RAW;
if (flags & V4L2_MBUS_FIELD_EVEN_LOW)
- cfg |= SUN6I_CSI_IF_CFG_FIELD_NEGATIVE;
+ value |= SUN6I_CSI_IF_CFG_FIELD_NEGATIVE;
else
- cfg |= SUN6I_CSI_IF_CFG_FIELD_POSITIVE;
+ value |= SUN6I_CSI_IF_CFG_FIELD_POSITIVE;
if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
- cfg |= SUN6I_CSI_IF_CFG_VREF_POL_NEGATIVE;
+ value |= SUN6I_CSI_IF_CFG_VREF_POL_NEGATIVE;
else
- cfg |= SUN6I_CSI_IF_CFG_VREF_POL_POSITIVE;
+ value |= SUN6I_CSI_IF_CFG_VREF_POL_POSITIVE;
if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
- cfg |= SUN6I_CSI_IF_CFG_HREF_POL_NEGATIVE;
+ value |= SUN6I_CSI_IF_CFG_HREF_POL_NEGATIVE;
else
- cfg |= SUN6I_CSI_IF_CFG_HREF_POL_POSITIVE;
+ value |= SUN6I_CSI_IF_CFG_HREF_POL_POSITIVE;
if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
- cfg |= SUN6I_CSI_IF_CFG_CLK_POL_RISING;
+ value |= SUN6I_CSI_IF_CFG_CLK_POL_RISING;
else
- cfg |= SUN6I_CSI_IF_CFG_CLK_POL_FALLING;
+ value |= 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;
+ value |= SUN6I_CSI_IF_CFG_IF_CSI_BT1120;
else
- cfg |= SUN6I_CSI_IF_CFG_IF_CSI_BT656;
+ value |= SUN6I_CSI_IF_CFG_IF_CSI_BT656;
if (flags & V4L2_MBUS_FIELD_EVEN_LOW)
- cfg |= SUN6I_CSI_IF_CFG_FIELD_NEGATIVE;
+ value |= SUN6I_CSI_IF_CFG_FIELD_NEGATIVE;
else
- cfg |= SUN6I_CSI_IF_CFG_FIELD_POSITIVE;
+ value |= SUN6I_CSI_IF_CFG_FIELD_POSITIVE;
if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
- cfg |= SUN6I_CSI_IF_CFG_CLK_POL_RISING;
+ value |= SUN6I_CSI_IF_CFG_CLK_POL_RISING;
else
- cfg |= SUN6I_CSI_IF_CFG_CLK_POL_FALLING;
+ value |= SUN6I_CSI_IF_CFG_CLK_POL_FALLING;
break;
default:
- dev_warn(csi_dev->dev, "Unsupported bus type: %d\n",
- endpoint->bus_type);
+ dev_warn(dev, "unsupported bus type: %d\n", endpoint->bus_type);
break;
}
switch (bus_width) {
case 8:
- cfg |= SUN6I_CSI_IF_CFG_DATA_WIDTH_8;
+ /* 16-bit YUV formats use a doubled width in 8-bit mode. */
+ case 16:
+ value |= SUN6I_CSI_IF_CFG_DATA_WIDTH_8;
break;
case 10:
- cfg |= SUN6I_CSI_IF_CFG_DATA_WIDTH_10;
+ value |= 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 */
+ value |= SUN6I_CSI_IF_CFG_DATA_WIDTH_12;
break;
default:
- dev_warn(csi_dev->dev, "Unsupported bus width: %u\n", bus_width);
+ dev_warn(dev, "unsupported bus width: %u\n", bus_width);
break;
}
- regmap_write(csi_dev->regmap, SUN6I_CSI_IF_CFG_REG, cfg);
+ regmap_write(regmap, SUN6I_CSI_IF_CFG_REG, value);
}
static void sun6i_csi_capture_configure_format(struct sun6i_csi_device *csi_dev)
{
+ struct regmap *regmap = csi_dev->regmap;
u32 mbus_code, pixelformat, field;
- u32 cfg = 0;
- u32 val;
+ u8 input_format, input_yuv_seq, output_format;
+ u32 value = 0;
sun6i_csi_capture_format(csi_dev, &pixelformat, &field);
sun6i_csi_bridge_format(csi_dev, &mbus_code, NULL);
- val = get_csi_input_format(csi_dev, 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);
+ input_format = get_csi_input_format(csi_dev, mbus_code, pixelformat);
+ input_yuv_seq = get_csi_input_seq(csi_dev, mbus_code, pixelformat);
+ output_format = get_csi_output_format(csi_dev, pixelformat, field);
- val = get_csi_input_seq(csi_dev, mbus_code, pixelformat);
- cfg |= SUN6I_CSI_CH_CFG_INPUT_YUV_SEQ(val);
+ value |= SUN6I_CSI_CH_CFG_OUTPUT_FMT(output_format);
+ value |= SUN6I_CSI_CH_CFG_INPUT_FMT(input_format);
+ value |= SUN6I_CSI_CH_CFG_INPUT_YUV_SEQ(input_yuv_seq);
if (field == V4L2_FIELD_TOP)
- cfg |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD0;
+ value |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD0;
else if (field == V4L2_FIELD_BOTTOM)
- cfg |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD1;
+ value |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD1;
else
- cfg |= SUN6I_CSI_CH_CFG_FIELD_SEL_EITHER;
+ value |= SUN6I_CSI_CH_CFG_FIELD_SEL_EITHER;
- regmap_write(csi_dev->regmap, SUN6I_CSI_CH_CFG_REG, cfg);
+ regmap_write(regmap, SUN6I_CSI_CH_CFG_REG, value);
}
static void sun6i_csi_capture_configure_window(struct sun6i_csi_device *csi_dev)
--
2.34.1
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