Version 2, i moved reading from microcontroler register after is_cx2583x return.
Signed-off-by: Miroslav Slugen <[email protected]>
From: Miroslav Slugen <[email protected]>
Date: Mon, 12 Dec 2011 00:19:34 +0100
Subject: [PATCH] cx25840_g_tuner should support also radio mode for detecting
current audio mode, and we can use cx25840 register 0x805 for FM radio lock,
also reworked mode detection.
---
diff -Naurp a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
--- a/drivers/media/video/cx25840/cx25840-core.c 2012-01-16 16:18:06.181583026 +0100
+++ b/drivers/media/video/cx25840/cx25840-core.c 2012-01-16 16:23:38.665583026 +0100
@@ -1589,37 +1589,68 @@ static int cx25840_g_tuner(struct v4l2_s
{
struct cx25840_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
- u8 vpres = cx25840_read(client, 0x40e) & 0x20;
+ u8 vpres = 0;
u8 mode;
- int val = 0;
+ int val = V4L2_TUNER_SUB_MONO;
- if (state->radio)
- return 0;
+ if (!state->radio) {
+ vpres = cx25840_read(client, 0x40e) & 0x20;
+ vt->signal = vpres ? 0xffff : 0x0;
+ }
- vt->signal = vpres ? 0xffff : 0x0;
if (is_cx2583x(state))
return 0;
- vt->capability |=
- V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
- V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
+ /* stereo for all modes, even radio */
+ vt->capability |= V4L2_TUNER_CAP_STEREO;
+
+ if (!state->radio) {
+ vt->capability |= V4L2_TUNER_CAP_LANG1 |
+ V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
+ } else {
+ /* Works only for 0xf9 AUD_MODE */
+ mode = cx25840_read(client, 0x805);
+ /* usable modes from datasheet 0x01 - 0x11 */
+ vt->signal = ((mode >= 1) && (mode <= 0x11)) ? 0xffff : 0;
+ }
mode = cx25840_read(client, 0x804);
/* get rxsubchans and audmode */
- if ((mode & 0xf) == 1)
+ switch (mode & 0xf) {
+ case 0:
+ vt->audmode = V4L2_TUNER_MODE_MONO;
+ break;
+ case 1:
val |= V4L2_TUNER_SUB_STEREO;
- else
- val |= V4L2_TUNER_SUB_MONO;
-
- if (mode == 2 || mode == 4)
+ vt->audmode = V4L2_TUNER_MODE_STEREO;
+ break;
+ case 2:
+ case 4:
val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+ /* can't detect exact audio mode */
+ vt->audmode = state->audmode;
+ break;
+ default:
+ /* audio mode is forced or unknown */
+ switch (state->audmode) {
+ case V4L2_TUNER_MODE_STEREO:
+ val |= V4L2_TUNER_SUB_STEREO;
+ break;
+ case V4L2_TUNER_MODE_LANG1:
+ case V4L2_TUNER_MODE_LANG2:
+ case V4L2_TUNER_MODE_LANG1_LANG2:
+ val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+ break;
+ }
+ vt->audmode = state->audmode;
+ break;
+ }
if (mode & 0x10)
val |= V4L2_TUNER_SUB_SAP;
vt->rxsubchans = val;
- vt->audmode = state->audmode;
return 0;
}
--
1.7.2.3
