Also print out MSR registers written to the sensor. This isn't entirely
optimal as the debug strings are produced even if they're not used but
that isn't really a grave issue --- the I²C bus is very slow anyway.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/media/i2c/ccs/ccs-reg-access.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/media/i2c/ccs/ccs-reg-access.c b/drivers/media/i2c/ccs/ccs-reg-access.c
index 2025e9ab6e91..c600f143a1b9 100644
--- a/drivers/media/i2c/ccs/ccs-reg-access.c
+++ b/drivers/media/i2c/ccs/ccs-reg-access.c
@@ -387,12 +387,20 @@ int ccs_write_data_regs(struct ccs_sensor *sensor, struct ccs_reg *regs,
for (j = 0; j < regs->len;
j += msg.len - 2, regdata += msg.len - 2) {
+ char printbuf[(MAX_WRITE_LEN << 1) + 1 /* nil */] =
+ { 0 };
int rval;
msg.len = min(regs->len - j, MAX_WRITE_LEN);
+ bin2hex(printbuf, regdata, msg.len);
+ dev_dbg(&client->dev,
+ "writing msr reg 0x%4.4x value 0x%s\n",
+ regs->addr + j, printbuf);
+
put_unaligned_be16(regs->addr + j, buf);
memcpy(buf + 2, regdata, msg.len);
+
msg.len += 2;
rval = ccs_write_retry(client, &msg);
--
2.27.0
