[PATCH v3 3/5] media: ov02c10: Split the PLL registers off the mode tables

[Felipe Calliari <calliarifelipe@gmail.com>]

The PLL is programmed partly by the common mode table and partly by the
per-lane tables, which override 0x0303 and 0x0305 with the same values
for either lane count and also set 0x0316.

Move the 0x03xx PLL registers into a table of their own, keeping only
the values that end up in the sensor, and write it before the mode
tables. The PLL settings depend on the external clock rate rather than
on the mode or the lane count, and this prepares for supporting clock
rates other than 19.2 MHz.

No functional change intended.

Signed-off-by: Felipe Calliari <calliarifelipe@gmail.com>
---

Notes:
    Changes in v3:
    - New patch, as asked by Sakari.

 drivers/media/i2c/ov02c10.c | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/drivers/media/i2c/ov02c10.c b/drivers/media/i2c/ov02c10.c
index cdccbdef3..0e5010303 100644
--- a/drivers/media/i2c/ov02c10.c
+++ b/drivers/media/i2c/ov02c10.c
@@ -89,12 +89,6 @@ struct ov02c10_mode {
 };
 
 static const struct reg_sequence sensor_1928x1092_30fps_setting[] = {
-	{0x0301, 0x08},
-	{0x0303, 0x06},
-	{0x0304, 0x01},
-	{0x0305, 0xe0},
-	{0x0313, 0x40},
-	{0x031c, 0x4f},
 	{0x3020, 0x97},
 	{0x3022, 0x01},
 	{0x3026, 0xb4},
@@ -303,10 +297,6 @@ static const struct reg_sequence sensor_1928x1092_30fps_1lane_setting[] = {
 	{0x394e, 0x0b},
 	{0x4800, 0x24},
 	{0x5000, 0xf5},
-	/* plls */
-	{0x0303, 0x05},
-	{0x0305, 0x90},
-	{0x0316, 0x90},
 	{0x3016, 0x12},
 };
 
@@ -330,11 +320,17 @@ static const struct reg_sequence sensor_1928x1092_30fps_2lane_setting[] = {
 	{0x4d0d, 0x00},
 	{0x5000, 0xfd},
 	{0x481f, 0x30},
-	/* plls */
+	{0x3016, 0x32},
+};
+
+static const struct reg_sequence sensor_pll_19_2mhz_setting[] = {
+	{0x0301, 0x08},
 	{0x0303, 0x05},
+	{0x0304, 0x01},
 	{0x0305, 0x90},
+	{0x0313, 0x40},
 	{0x0316, 0x90},
-	{0x3016, 0x32},
+	{0x031c, 0x4f},
 };
 
 static const char * const ov02c10_test_pattern_menu[] = {
@@ -601,6 +597,14 @@ static int ov02c10_enable_streams(struct v4l2_subdev *sd,
 	if (ret)
 		return ret;
 
+	ret = regmap_multi_reg_write(ov02c10->regmap,
+				     sensor_pll_19_2mhz_setting,
+				     ARRAY_SIZE(sensor_pll_19_2mhz_setting));
+	if (ret) {
+		dev_err(ov02c10->dev, "failed to write PLL settings\n");
+		goto out;
+	}
+
 	reg_sequence = mode->reg_sequence;
 	sequence_length = mode->sequence_length;
 	ret = regmap_multi_reg_write(ov02c10->regmap,
-- 
2.55.0