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drivers: video: ov5640: Add support for test patterns

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Add support for 4 test pattern modes:
- Color bar
- Color bar rolling
- Square
- Square rolling

Signed-off-by: Phi Bang Nguyen <phibang.nguyen@nxp.com>
This commit is contained in:
Phi Bang Nguyen 2024-06-18 18:44:29 +02:00 committed by Carles Cufí
parent 865032103b
commit c1980c2806
1 changed files with 32 additions and 0 deletions
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32
drivers/video/ov5640.c
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@ -35,6 +35,7 @@ LOG_MODULE_REGISTER(video_ov5640, CONFIG_VIDEO_LOG_LEVEL);
#define TIMING_TC_REG21_REG 0x3821
#define HZ5060_CTRL01_REG 0x3c01
#define ISP_CTRL01_REG 0x5001
#define PRE_ISP_TEST_SET1 0x503d
#define SC_PLL_CTRL0_REG 0x3034
#define SC_PLL_CTRL1_REG 0x3035
@ -569,12 +570,43 @@ static int ov5640_stream_stop(const struct device *dev)
return ov5640_write_reg(&cfg->i2c, SYS_CTRL0_REG, SYS_CTRL0_SW_PWDN);
}
#define TEST_PATTERN_ENABLE BIT(7)
#define TEST_PATTERN_ROLLING BIT(6)
#define TEST_PATTERN_BAR (0 << 0)
#define TEST_PATTERN_SQUARE (2 << 0)
static const uint8_t test_pattern_val[] = {
0,
TEST_PATTERN_ENABLE | TEST_PATTERN_BAR | (1 << 2),
TEST_PATTERN_ENABLE | TEST_PATTERN_BAR | (1 << 2) | TEST_PATTERN_ROLLING,
TEST_PATTERN_ENABLE | TEST_PATTERN_SQUARE,
TEST_PATTERN_ENABLE | TEST_PATTERN_SQUARE | TEST_PATTERN_ROLLING,
};
static int ov5640_set_ctrl_test_pattern(const struct device *dev, int value)
{
const struct ov5640_config *cfg = dev->config;
return ov5640_write_reg(&cfg->i2c, PRE_ISP_TEST_SET1, test_pattern_val[value]);
}
static int ov5640_set_ctrl(const struct device *dev, unsigned int cid, void *value)
{
switch (cid) {
case VIDEO_CID_CAMERA_TEST_PATTERN:
return ov5640_set_ctrl_test_pattern(dev, (int)value);
default:
return -ENOTSUP;
}
}
static const struct video_driver_api ov5640_driver_api = {
.set_format = ov5640_set_fmt,
.get_format = ov5640_get_fmt,
.get_caps = ov5640_get_caps,
.stream_start = ov5640_stream_start,
.stream_stop = ov5640_stream_stop,
.set_ctrl = ov5640_set_ctrl,
};
static int ov5640_init(const struct device *dev)