Patch to add the s_power function to the saa7115.c code.
Signed-off-by: Franklin Meng<fmeng2002@xxxxxxxxx>
diff -r b6b82258cf5e linux/drivers/media/video/saa7115.c
--- a/linux/drivers/media/video/saa7115.c Thu Dec 31 19:14:54 2009 -0200
+++ b/linux/drivers/media/video/saa7115.c Sun Jan 17 22:54:21 2010 -0800
@@ -1338,6 +1338,59 @@
return 0;
}
+static int saa711x_s_power(struct v4l2_subdev *sd, int val)
+{
+ struct saa711x_state *state = to_state(sd);
+
+ if(val > 1 || val < 0)
+ return -EINVAL;
+
+ /* There really isn't a way to put the chip into power saving
+ other than by pulling CE to ground so all we do is return
+ out of this function
+ */
+ if(val == 0)
+ return 0;
+
+ /* When enabling the chip again we need to reinitialize the
+ all the values
+ */
+ state->input = -1;
+ state->output = SAA7115_IPORT_ON;
+ state->enable = 1;
+ state->radio = 0;
+ state->bright = 128;
+ state->contrast = 64;
+ state->hue = 0;
+ state->sat = 64;
+
+ state->audclk_freq = 48000;
+
+ v4l2_dbg(1, debug, sd, "writing init values s_power\n");
+
+ /* init to 60hz/48khz */
+ state->crystal_freq = SAA7115_FREQ_24_576_MHZ;
+ switch (state->ident) {
+ case V4L2_IDENT_SAA7111:
+ saa711x_writeregs(sd, saa7111_init);
+ break;
+ case V4L2_IDENT_SAA7113:
+ saa711x_writeregs(sd, saa7113_init);
+ break;
+ default:
+ state->crystal_freq = SAA7115_FREQ_32_11_MHZ;
+ saa711x_writeregs(sd, saa7115_init_auto_input);
+ }
+ if (state->ident != V4L2_IDENT_SAA7111)
+ saa711x_writeregs(sd, saa7115_init_misc);
+ saa711x_set_v4lstd(sd, V4L2_STD_NTSC);
+
+ v4l2_dbg(1, debug, sd, "status: (1E) 0x%02x, (1F) 0x%02x\n",
+ saa711x_read(sd, R_1E_STATUS_BYTE_1_VD_DEC),
+ saa711x_read(sd, R_1F_STATUS_BYTE_2_VD_DEC));
+ return 0;
+}
+
static int saa711x_reset(struct v4l2_subdev *sd, u32 val)
{
v4l2_dbg(1, debug, sd, "decoder RESET\n");
@@ -1513,6 +1566,7 @@
.s_std = saa711x_s_std,
.reset = saa711x_reset,
.s_gpio = saa711x_s_gpio,
+ .s_power = saa711x_s_power,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = saa711x_g_register,
.s_register = saa711x_s_register,
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
