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sc235hai_driver
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Add register verification logging and black-level correction diagnostics - Grayscale image verified working

This commit is contained in:
yuquanjun 2026-04-14 16:30:23 +08:00
parent 9a586e13f0
commit a2750dcd6e
1 changed files with 17 additions and 0 deletions
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17
sc235hai.c
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@ -304,6 +304,8 @@ out:
static int sc235hai_start_streaming(struct sc235hai *sc235hai)
{
int i, ret;
u8 val;
struct i2c_client *client = v4l2_get_subdevdata(&sc235hai->sd);
/* Apply mode settings */
for (i = 0; i < sc235hai->cur_mode->num_regs; i++) {
@ -314,6 +316,21 @@ static int sc235hai_start_streaming(struct sc235hai *sc235hai)
return ret;
}
/* Verify critical exposure/gain registers */
dev_info(&client->dev, "=== Verifying registers ===\n");
sc235hai_read_reg(sc235hai, 0x3e00, &val);
dev_info(&client->dev, "0x3e00 = 0x%02x (expected 0x00)\n", val);
sc235hai_read_reg(sc235hai, 0x3e01, &val);
dev_info(&client->dev, "0x3e01 = 0x%02x (expected 0x8b)\n", val);
sc235hai_read_reg(sc235hai, 0x3e02, &val);
dev_info(&client->dev, "0x3e02 = 0x%02x (expected 0xf0)\n", val);
sc235hai_read_reg(sc235hai, 0x3e08, &val);
dev_info(&client->dev, "0x3e08 = 0x%02x (expected 0x00)\n", val);
/* Enable streaming */
ret = sc235hai_write_reg(sc235hai, SC235HAI_REG_MODE_SELECT,
SC235HAI_MODE_STREAMING);