Re: [PATCH 1/2] gspca: sn9c2028: Add support for Genius Videocam Live v2

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Hi Vasily,

Thanks for the patches.

On 19-04-15 20:52, Vasily Khoruzhick wrote:

Signed-off-by: Vasily Khoruzhick <anarsoul@xxxxxxxxx>
---
  drivers/media/usb/gspca/sn9c2028.c | 120 ++++++++++++++++++++++++++++++++++++-
  1 file changed, 119 insertions(+), 1 deletion(-)

diff --git a/drivers/media/usb/gspca/sn9c2028.c b/drivers/media/usb/gspca/sn9c2028.c
index 39b6b2e..317b02c 100644
--- a/drivers/media/usb/gspca/sn9c2028.c
+++ b/drivers/media/usb/gspca/sn9c2028.c
@@ -2,6 +2,7 @@
   * SN9C2028 library
   *
   * Copyright (C) 2009 Theodore Kilgore <kilgota@xxxxxxxxxx>
+ * Copyright (C) 2015 Vasily Khoruzhick <anarsoul@xxxxxxxxx>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
@@ -128,7 +129,7 @@ static int sn9c2028_long_command(struct gspca_dev *gspca_dev, u8 *command)
  	status = -1;
  	for (i = 0; i < 256 && status < 2; i++)
  		status = sn9c2028_read1(gspca_dev);
-	if (status != 2) {
+	if (status < 0) {
  		pr_err("long command status read error %d\n", status);
  		return (status < 0) ? status : -EIO;
  	}


Do you really need this change ? sn9c2028_read1 returns either a negative
error code, or the byte read from the sn9c2028 chip. This functions wait for
the sn9c2028 to return a read value of 2. I admit that the check in the for
vs the check in the error reporting is not chosen well, both should probably
be != 2. But checking for status < 0 is not good as this does not catch
a successful read from the chip not returning 2.


@@ -178,6 +179,9 @@ static int sd_config(struct gspca_dev *gspca_dev,
  	case 0x7005:
  		PDEBUG(D_PROBE, "Genius Smart 300 camera");
  		break;
+	case 0x7003:
+		PDEBUG(D_PROBE, "Genius Videocam Live v2");
+		break;
  	case 0x8000:
  		PDEBUG(D_PROBE, "DC31VC");
  		break;
@@ -530,6 +534,116 @@ static int start_genius_cam(struct gspca_dev *gspca_dev)
  				  ARRAY_SIZE(genius_start_commands));
  }

+static int start_genius_videocam_live(struct gspca_dev *gspca_dev)
+{
+	int r;
+	struct sd *sd = (struct sd *) gspca_dev;
+	struct init_command genius_vcam_live_start_commands[] = {
+		{{0x0c, 0x01, 0x00, 0x00, 0x00, 0x00}, 0},
+		{{0x16, 0x01, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x10, 0x00, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x13, 0x25, 0x01, 0x16, 0x00, 0x00}, 4},
+		{{0x13, 0x26, 0x01, 0x12, 0x00, 0x00}, 4},
+
+		{{0x13, 0x28, 0x01, 0x0e, 0x00, 0x00}, 4},
+		{{0x13, 0x27, 0x01, 0x20, 0x00, 0x00}, 4},
+		{{0x13, 0x29, 0x01, 0x22, 0x00, 0x00}, 4},
+		{{0x13, 0x2c, 0x01, 0x02, 0x00, 0x00}, 4},
+		{{0x13, 0x2d, 0x01, 0x02, 0x00, 0x00}, 4},
+		{{0x13, 0x2e, 0x01, 0x09, 0x00, 0x00}, 4},
+		{{0x13, 0x2f, 0x01, 0x07, 0x00, 0x00}, 4},
+		{{0x11, 0x20, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x21, 0x2d, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x22, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x23, 0x03, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x10, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x11, 0x64, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x12, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x13, 0x91, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x14, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x15, 0x20, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x16, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x17, 0x60, 0x00, 0x00, 0x00}, 4},
+		{{0x1c, 0x20, 0x00, 0x2d, 0x00, 0x00}, 4},
+		{{0x13, 0x20, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x13, 0x21, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x13, 0x22, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x13, 0x23, 0x01, 0x01, 0x00, 0x00}, 4},
+		{{0x13, 0x24, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x13, 0x25, 0x01, 0x16, 0x00, 0x00}, 4},
+		{{0x13, 0x26, 0x01, 0x12, 0x00, 0x00}, 4},
+		{{0x13, 0x27, 0x01, 0x20, 0x00, 0x00}, 4},
+		{{0x13, 0x28, 0x01, 0x0e, 0x00, 0x00}, 4},
+		{{0x13, 0x29, 0x01, 0x22, 0x00, 0x00}, 4},
+		{{0x13, 0x2a, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x13, 0x2b, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x13, 0x2c, 0x01, 0x02, 0x00, 0x00}, 4},
+		{{0x13, 0x2d, 0x01, 0x02, 0x00, 0x00}, 4},
+		{{0x13, 0x2e, 0x01, 0x09, 0x00, 0x00}, 4},
+		{{0x13, 0x2f, 0x01, 0x07, 0x00, 0x00}, 4},
+		{{0x12, 0x34, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x13, 0x34, 0x01, 0xa1, 0x00, 0x00}, 4},
+		{{0x13, 0x35, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x01, 0x04, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x02, 0x92, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x10, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x11, 0x64, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x12, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x13, 0x91, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x14, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x15, 0x20, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x16, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x17, 0x60, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x20, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x21, 0x2d, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x22, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x23, 0x03, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x25, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x26, 0x02, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x27, 0x88, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x30, 0x38, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x31, 0x2a, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x32, 0x2a, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x33, 0x2a, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x34, 0x02, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x5b, 0x0a, 0x00, 0x00, 0x00}, 4},
+		{{0x13, 0x25, 0x01, 0x28, 0x00, 0x00}, 4},
+		{{0x13, 0x26, 0x01, 0x1e, 0x00, 0x00}, 4},
+		{{0x13, 0x28, 0x01, 0x0e, 0x00, 0x00}, 4},
+		{{0x13, 0x27, 0x01, 0x20, 0x00, 0x00}, 4},
+		{{0x13, 0x29, 0x01, 0x62, 0x00, 0x00}, 4},
+		{{0x13, 0x2c, 0x01, 0x02, 0x00, 0x00}, 4},
+		{{0x13, 0x2d, 0x01, 0x03, 0x00, 0x00}, 4},
+		{{0x13, 0x2e, 0x01, 0x0f, 0x00, 0x00}, 4},
+		{{0x13, 0x2f, 0x01, 0x0c, 0x00, 0x00}, 4},
+		{{0x11, 0x20, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x21, 0x2a, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x22, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x23, 0x28, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x10, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x11, 0x04, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x12, 0x00, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x13, 0x03, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x14, 0x01, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x15, 0xe0, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x16, 0x02, 0x00, 0x00, 0x00}, 4},
+		{{0x11, 0x17, 0x80, 0x00, 0x00, 0x00}, 4},
+		{{0x1c, 0x20, 0x00, 0x2a, 0x00, 0x00}, 1},
+		{{0x20, 0x34, 0xa1, 0x00, 0x00, 0x00}, 0},
+		/* Camera should start to capture now. */
+		{{0x12, 0x27, 0x01, 0x00, 0x00, 0x00}, 0},
+		{{0x1b, 0x32, 0x26, 0x00, 0x00, 0x00}, 0},
+		{{0x1d, 0x25, 0x10, 0x20, 0xab, 0x00}, 0},
+	};
+
+	r = run_start_commands(gspca_dev, genius_vcam_live_start_commands,
+				  ARRAY_SIZE(genius_vcam_live_start_commands));
+	if (r < 0)
+		return r;
+
+	return r;
+}
+
  static int start_vivitar_cam(struct gspca_dev *gspca_dev)
  {
  	struct init_command vivitar_start_commands[] = {
@@ -623,6 +737,9 @@ static int sd_start(struct gspca_dev *gspca_dev)
  	case 0x7005:
  		err_code = start_genius_cam(gspca_dev);
  		break;
+	case 0x7003:
+		err_code = start_genius_videocam_live(gspca_dev);
+		break;
  	case 0x8001:
  		err_code = start_spy_cam(gspca_dev);
  		break;
@@ -701,6 +818,7 @@ static const struct sd_desc sd_desc = {
  /* -- module initialisation -- */
  static const struct usb_device_id device_table[] = {
  	{USB_DEVICE(0x0458, 0x7005)}, /* Genius Smart 300, version 2 */
+	{USB_DEVICE(0x0458, 0x7003)}, /* Genius Videocam Live v2  */
  	/* The Genius Smart is untested. I can't find an owner ! */
  	/* {USB_DEVICE(0x0c45, 0x8000)}, DC31VC, Don't know this camera */
  	{USB_DEVICE(0x0c45, 0x8001)}, /* Wild Planet digital spy cam */



Otherwise this patch looks good.

Regards,

Hans
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