On 06/26/2017 06:33 PM, Sakari Ailus wrote:

Hi Hugues,

On Thu, Jun 22, 2017 at 05:05:40PM +0200, Hugues Fruchet wrote:

quoted

Align resolution sequences on initialization sequence using
i2c_rv structure NULL terminated .This add flexibility
on resolution sequence size.
Document resolution related registers by using corresponding
define instead of hexa address/value.

Signed-off-by: Hugues Fruchet <redacted>
---
  drivers/media/i2c/ov9650.c | 98 ++++++++++++++++++++++++++++++----------------
  1 file changed, 64 insertions(+), 34 deletions(-)

diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c
index 4311da6..8b283c9 100644
--- a/drivers/media/i2c/ov9650.c
+++ b/drivers/media/i2c/ov9650.c

@@ -227,11 +227,16 @@ struct ov965x_ctrls {
  	u8 update;
  };
  
+struct i2c_rv {
+	u8 addr;
+	u8 value;
+};
+
  struct ov965x_framesize {
  	u16 width;
  	u16 height;
  	u16 max_exp_lines;
-	const u8 *regs;
+	const struct i2c_rv *regs;
  };
  
  struct ov965x_interval {

@@ -280,9 +285,11 @@ struct ov965x {
  	u8 apply_frame_fmt;
  };
  
-struct i2c_rv {
-	u8 addr;
-	u8 value;
+struct ov965x_pixfmt {
+	u32 code;
+	u32 colorspace;
+	/* REG_TSLB value, only bits [3:2] may be set. */
+	u8 tslb_reg;
  };
  
  static const struct i2c_rv ov965x_init_regs[] = {

@@ -342,30 +349,59 @@ struct i2c_rv {
  	{ REG_NULL, 0 }
  };
  
-#define NUM_FMT_REGS 14
-/*
- * COM7,  COM3,  COM4, HSTART, HSTOP, HREF, VSTART, VSTOP, VREF,
- * EXHCH, EXHCL, ADC,  OCOM,   OFON
- */
-static const u8 frame_size_reg_addr[NUM_FMT_REGS] = {
-	0x12, 0x0c, 0x0d, 0x17, 0x18, 0x32, 0x19, 0x1a, 0x03,
-	0x2a, 0x2b, 0x37, 0x38, 0x39,
-};
-
-static const u8 ov965x_sxga_regs[NUM_FMT_REGS] = {
-	0x00, 0x00, 0x00, 0x1e, 0xbe, 0xbf, 0x01, 0x81, 0x12,
-	0x10, 0x34, 0x81, 0x93, 0x51,
+static const struct i2c_rv ov965x_sxga_regs[] = {
+	{ REG_COM7, 0x00 },
+	{ REG_COM3, 0x00 },
+	{ REG_COM4, 0x00 },
+	{ REG_HSTART, 0x1e },
+	{ REG_HSTOP, 0xbe },
+	{ 0x32, 0xbf },
+	{ REG_VSTART, 0x01 },
+	{ REG_VSTOP, 0x81 },
+	{ REG_VREF, 0x12 },
+	{ REG_EXHCH, 0x10 },
+	{ REG_EXHCL, 0x34 },
+	{ REG_ADC, 0x81 },
+	{ REG_ACOM, 0x93 },
+	{ REG_OFON, 0x51 },
+	{ REG_NULL, 0 },
  };
  
-static const u8 ov965x_vga_regs[NUM_FMT_REGS] = {
-	0x40, 0x04, 0x80, 0x26, 0xc6, 0xed, 0x01, 0x3d, 0x00,
-	0x10, 0x40, 0x91, 0x12, 0x43,
+static const struct i2c_rv ov965x_vga_regs[] = {
+	{ REG_COM7, 0x40 },
+	{ REG_COM3, 0x04 },
+	{ REG_COM4, 0x80 },
+	{ REG_HSTART, 0x26 },
+	{ REG_HSTOP, 0xc6 },
+	{ 0x32, 0xed },
+	{ REG_VSTART, 0x01 },
+	{ REG_VSTOP, 0x3d },
+	{ REG_VREF, 0x00 },
+	{ REG_EXHCH, 0x10 },
+	{ REG_EXHCL, 0x40 },
+	{ REG_ADC, 0x91 },
+	{ REG_ACOM, 0x12 },
+	{ REG_OFON, 0x43 },
+	{ REG_NULL, 0 },
  };
  
  /* Determined empirically. */
-static const u8 ov965x_qvga_regs[NUM_FMT_REGS] = {
-	0x10, 0x04, 0x80, 0x25, 0xc5, 0xbf, 0x00, 0x80, 0x12,
-	0x10, 0x40, 0x91, 0x12, 0x43,
+static const struct i2c_rv ov965x_qvga_regs[] = {
+	{ REG_COM7, 0x10 },
+	{ REG_COM3, 0x04 },
+	{ REG_COM4, 0x80 },
+	{ REG_HSTART, 0x25 },
+	{ REG_HSTOP, 0xc5 },
+	{ 0x32, 0xbf },
+	{ REG_VSTART, 0x00 },
+	{ REG_VSTOP, 0x80 },
+	{ REG_VREF, 0x12 },
+	{ REG_EXHCH, 0x10 },
+	{ REG_EXHCL, 0x40 },
+	{ REG_ADC, 0x91 },
+	{ REG_ACOM, 0x12 },
+	{ REG_OFON, 0x43 },
+	{ REG_NULL, 0 },
  };
  
  static const struct ov965x_framesize ov965x_framesizes[] = {

@@ -387,13 +423,6 @@ struct i2c_rv {
  	},
  };
  
-struct ov965x_pixfmt {
-	u32 code;
-	u32 colorspace;
-	/* REG_TSLB value, only bits [3:2] may be set. */
-	u8 tslb_reg;
-};

Any particular reason for moving struct ov965x_pixfmt definition?

Not in the right patch, must be in 5/6 [media] ov9650: add multiple 
variant support, I'll fix in v2.

quoted

-
  static const struct ov965x_pixfmt ov965x_formats[] = {
  	{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG, 0x00},
  	{ MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG, 0x04},

@@ -1268,11 +1297,12 @@ static int ov965x_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config
  
  static int ov965x_set_frame_size(struct ov965x *ov965x)
  {
-	int i, ret = 0;
+	int ret = 0;
+
+	v4l2_dbg(1, debug, ov965x->client, "%s\n", __func__);
  
-	for (i = 0; ret == 0 && i < NUM_FMT_REGS; i++)
-		ret = ov965x_write(ov965x->client, frame_size_reg_addr[i],
-				   ov965x->frame_size->regs[i]);
+	ret = ov965x_write_array(ov965x->client,
+				 ov965x->frame_size->regs);
  	return ret;
  }