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authorHans Verkuil <hverkuil@xs4all.nl>2006-04-02 12:50:42 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-06-25 01:57:36 -0300
commitb7f8292c96463810edfecff70dd4631d47e5a36b (patch)
tree02b1cfb3f753ea82c6fa51c901420074875be355 /drivers/media
parent2eb606db1134ce860cc0cbf8b533b6315d182e21 (diff)
V4L/DVB (3711): Add support for VIDIOC_INT_S_CRYSTAL_FREQ internal command.
Some saa7115-based cards use a different crystal frequency and a different audio clock generation. Add a new VIDIOC_INT_S_CRYSTAL_FREQ command to be able to set these values. Also change the default APLL setting to 0. It makes no sense to have the audio clock independent from the video clock, this can lead to audio/video synchronization problems. Setting this to 0 is also consistent with the old saa7114.c source and the way the Hauppauge Windows driver sets it. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/video/saa7115.c51
-rw-r--r--drivers/media/video/v4l2-common.c9
2 files changed, 51 insertions, 9 deletions
diff --git a/drivers/media/video/saa7115.c b/drivers/media/video/saa7115.c
index dceebc0b125..edea9e3d2dc 100644
--- a/drivers/media/video/saa7115.c
+++ b/drivers/media/video/saa7115.c
@@ -72,6 +72,10 @@ struct saa7115_state {
int sat;
enum v4l2_chip_ident ident;
u32 audclk_freq;
+ u32 crystal_freq;
+ u8 ucgc;
+ u8 cgcdiv;
+ u8 apll;
};
/* ----------------------------------------------------------------------- */
@@ -375,10 +379,6 @@ static const unsigned char saa7113_init_auto_input[] = {
};
static const unsigned char saa7115_init_misc[] = {
- 0x38, 0x03, /* audio stuff */
- 0x39, 0x10,
- 0x3a, 0x08,
-
0x81, 0x01, /* reg 0x15,0x16 define blanking window */
0x82, 0x00,
0x83, 0x01, /* I port settings */
@@ -584,6 +584,7 @@ static int saa7115_set_audio_clock_freq(struct i2c_client *client, u32 freq)
u32 acni;
u32 hz;
u64 f;
+ u8 acc = 0; /* reg 0x3a, audio clock control */
v4l_dbg(1, debug, client, "set audio clock freq: %d\n", freq);
@@ -591,18 +592,34 @@ static int saa7115_set_audio_clock_freq(struct i2c_client *client, u32 freq)
if (freq < 32000 || freq > 48000)
return -EINVAL;
+ /* The saa7113 has no audio clock */
+ if (state->ident == V4L2_IDENT_SAA7113)
+ return 0;
+
/* hz is the refresh rate times 100 */
hz = (state->std & V4L2_STD_525_60) ? 5994 : 5000;
/* acpf = (256 * freq) / field_frequency == (256 * 100 * freq) / hz */
acpf = (25600 * freq) / hz;
/* acni = (256 * freq * 2^23) / crystal_frequency =
(freq * 2^(8+23)) / crystal_frequency =
- (freq << 31) / 32.11 MHz */
+ (freq << 31) / crystal_frequency */
f = freq;
f = f << 31;
- do_div(f, 32110000);
+ do_div(f, state->crystal_freq);
acni = f;
+ if (state->ucgc) {
+ acpf = acpf * state->cgcdiv / 16;
+ acni = acni * state->cgcdiv / 16;
+ acc = 0x80;
+ if (state->cgcdiv == 3)
+ acc |= 0x40;
+ }
+ if (state->apll)
+ acc |= 0x08;
+ saa7115_write(client, 0x38, 0x03);
+ saa7115_write(client, 0x39, 0x10);
+ saa7115_write(client, 0x3a, acc);
saa7115_write(client, 0x30, acpf & 0xff);
saa7115_write(client, 0x31, (acpf >> 8) & 0xff);
saa7115_write(client, 0x32, (acpf >> 16) & 0x03);
@@ -1260,6 +1277,21 @@ static int saa7115_command(struct i2c_client *client, unsigned int cmd, void *ar
}
break;
+ case VIDIOC_INT_S_CRYSTAL_FREQ:
+ {
+ struct v4l2_crystal_freq *freq = arg;
+
+ if (freq->freq != SAA7115_FREQ_32_11_MHZ &&
+ freq->freq != SAA7115_FREQ_24_576_MHZ)
+ return -EINVAL;
+ state->crystal_freq = freq->freq;
+ state->cgcdiv = (freq->flags & SAA7115_FREQ_FL_CGCDIV) ? 3 : 4;
+ state->ucgc = (freq->flags & SAA7115_FREQ_FL_UCGC) ? 1 : 0;
+ state->apll = (freq->flags & SAA7115_FREQ_FL_APLL) ? 1 : 0;
+ saa7115_set_audio_clock_freq(client, state->audclk_freq);
+ break;
+ }
+
case VIDIOC_INT_DECODE_VBI_LINE:
saa7115_decode_vbi_line(client, arg);
break;
@@ -1401,10 +1433,13 @@ static int saa7115_attach(struct i2c_adapter *adapter, int address, int kind)
v4l_dbg(1, debug, client, "writing init values\n");
/* init to 60hz/48khz */
- if (state->ident == V4L2_IDENT_SAA7113)
+ if (state->ident == V4L2_IDENT_SAA7113) {
+ state->crystal_freq = SAA7115_FREQ_24_576_MHZ;
saa7115_writeregs(client, saa7113_init_auto_input);
- else
+ } else {
+ state->crystal_freq = SAA7115_FREQ_32_11_MHZ;
saa7115_writeregs(client, saa7115_init_auto_input);
+ }
saa7115_writeregs(client, saa7115_init_misc);
saa7115_writeregs(client, saa7115_cfg_60hz_fullres_x);
saa7115_writeregs(client, saa7115_cfg_60hz_fullres_y);
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index d330fa985bc..ad92e07e74f 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -331,7 +331,8 @@ static const char *v4l2_int_ioctls[] = {
[_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)] = "VIDIOC_INT_S_AUDIO_ROUTING",
[_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)] = "VIDIOC_INT_G_AUDIO_ROUTING",
[_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)] = "VIDIOC_INT_S_VIDEO_ROUTING",
- [_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)] = "VIDIOC_INT_G_VIDEO_ROUTING"
+ [_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)] = "VIDIOC_INT_G_VIDEO_ROUTING",
+ [_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)] = "VIDIOC_INT_S_CRYSTAL_FREQ"
};
#define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_ioctls)
@@ -667,6 +668,12 @@ void v4l_printk_ioctl_arg(char *s,unsigned int cmd, void *arg)
printk ("%s: input=0x%x, output=0x%x\n", s, p->input, p->output);
break;
}
+ case VIDIOC_INT_S_CRYSTAL_FREQ:
+ {
+ struct v4l2_crystal_freq *p=arg;
+ printk ("%s: freq=%u, flags=0x%x\n", s, p->freq, p->flags);
+ break;
+ }
case VIDIOC_G_SLICED_VBI_CAP:
{
struct v4l2_sliced_vbi_cap *p=arg;