forked from Minki/linux
V4L/DVB (3214): Calculate the saa7115 AMCLK regs instead of using fixed values
- Calculate the audio master clock registers from the actual frequencies. This simplifies the code and it also prepares for adding CGC2 support. - VIDIOC_INT_AUDIO_CLOCK_FREQ now receives an u32 instead of an enum. It is more generic and actually easier to implement. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
21fa715e67
commit
3578d3dd0b
@ -23,11 +23,13 @@
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#include "cx25840.h"
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inline static int set_audclk_freq(struct i2c_client *client,
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enum v4l2_audio_clock_freq freq)
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static int set_audclk_freq(struct i2c_client *client, u32 freq)
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{
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struct cx25840_state *state = i2c_get_clientdata(client);
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if (freq != 32000 && freq != 44100 && freq != 48000)
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return -EINVAL;
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/* assert soft reset */
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cx25840_and_or(client, 0x810, ~0x1, 0x01);
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@ -38,7 +40,7 @@ inline static int set_audclk_freq(struct i2c_client *client,
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switch (state->audio_input) {
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case AUDIO_TUNER:
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switch (freq) {
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case V4L2_AUDCLK_32_KHZ:
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case 32000:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040610);
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@ -51,7 +53,7 @@ inline static int set_audclk_freq(struct i2c_client *client,
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cx25840_write4(client, 0x90c, 0x7ff70108);
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break;
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case V4L2_AUDCLK_441_KHZ:
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case 44100:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040910);
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@ -64,7 +66,7 @@ inline static int set_audclk_freq(struct i2c_client *client,
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cx25840_write4(client, 0x90c, 0x596d0108);
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break;
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case V4L2_AUDCLK_48_KHZ:
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case 48000:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040a10);
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@ -84,7 +86,7 @@ inline static int set_audclk_freq(struct i2c_client *client,
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case AUDIO_INTERN:
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case AUDIO_RADIO:
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switch (freq) {
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case V4L2_AUDCLK_32_KHZ:
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case 32000:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f04081e);
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@ -103,7 +105,7 @@ inline static int set_audclk_freq(struct i2c_client *client,
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cx25840_write(client, 0x127, 0x54);
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break;
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case V4L2_AUDCLK_441_KHZ:
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case 44100:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040918);
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@ -119,7 +121,7 @@ inline static int set_audclk_freq(struct i2c_client *client,
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cx25840_write4(client, 0x90c, 0x85730108);
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break;
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case V4L2_AUDCLK_48_KHZ:
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case 48000:
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/* VID_PLL and AUX_PLL */
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cx25840_write4(client, 0x108, 0x0f040a18);
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@ -317,7 +319,7 @@ int cx25840_audio(struct i2c_client *client, unsigned int cmd, void *arg)
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case AUDC_SET_INPUT:
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return set_input(client, *(int *)arg);
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case VIDIOC_INT_AUDIO_CLOCK_FREQ:
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return set_audclk_freq(client, *(enum v4l2_audio_clock_freq *)arg);
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return set_audclk_freq(client, *(u32 *)arg);
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case VIDIOC_G_CTRL:
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_VOLUME:
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@ -802,7 +802,7 @@ static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
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i2c_set_clientdata(client, state);
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memset(state, 0, sizeof(struct cx25840_state));
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state->input = CX25840_TUNER;
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state->audclk_freq = V4L2_AUDCLK_48_KHZ;
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state->audclk_freq = 48000;
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state->audio_input = AUDIO_TUNER;
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state->cardtype = CARDTYPE_PVR150;
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@ -1008,13 +1008,7 @@ static void log_status(struct i2c_client *client)
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cx25840_info("Specified audio input: %s\n",
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state->audio_input == 0 ? "Tuner" : "External");
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switch (state->audclk_freq) {
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case V4L2_AUDCLK_441_KHZ: p = "44.1 kHz"; break;
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case V4L2_AUDCLK_48_KHZ: p = "48 kHz"; break;
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case V4L2_AUDCLK_32_KHZ: p = "32 kHz"; break;
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default: p = "undefined";
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}
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cx25840_info("Specified audioclock freq: %s\n", p);
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cx25840_info("Specified audioclock freq: %d Hz\n", state->audclk_freq);
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switch (pref_mode & 0xf) {
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case 0: p = "mono/language A"; break;
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@ -65,7 +65,7 @@ struct cx25840_state {
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enum cx25840_cardtype cardtype;
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enum cx25840_input input;
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int audio_input;
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enum v4l2_audio_clock_freq audclk_freq;
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u32 audclk_freq;
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};
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/* ----------------------------------------------------------------------- */
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@ -39,6 +39,7 @@
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-common.h>
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#include <asm/div64.h>
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MODULE_DESCRIPTION("Philips SAA7114/SAA7115 video decoder driver");
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MODULE_AUTHOR("Maxim Yevtyushkin, Kevin Thayer, Chris Kennedy, Hans Verkuil");
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@ -78,7 +79,7 @@ struct saa7115_state {
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int hue;
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int sat;
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enum v4l2_chip_ident ident;
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enum v4l2_audio_clock_freq audclk_freq;
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u32 audclk_freq;
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};
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/* ----------------------------------------------------------------------- */
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@ -469,80 +470,6 @@ static const unsigned char saa7115_init_misc[] = {
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0x00, 0x00
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};
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/* ============== SAA7715 AUDIO settings ============= */
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/* 48.0 kHz */
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static const unsigned char saa7115_cfg_48_audio[] = {
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0x34, 0xce,
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0x35, 0xfb,
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0x36, 0x30,
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0x00, 0x00
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};
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/* 44.1 kHz */
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static const unsigned char saa7115_cfg_441_audio[] = {
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0x34, 0xf2,
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0x35, 0x00,
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0x36, 0x2d,
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0x00, 0x00
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};
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/* 32.0 kHz */
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static const unsigned char saa7115_cfg_32_audio[] = {
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0x34, 0xdf,
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0x35, 0xa7,
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0x36, 0x20,
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0x00, 0x00
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};
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/* 48.0 kHz 60hz */
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static const unsigned char saa7115_cfg_60hz_48_audio[] = {
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0x30, 0xcd,
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0x31, 0x20,
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0x32, 0x03,
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0x00, 0x00
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};
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/* 48.0 kHz 50hz */
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static const unsigned char saa7115_cfg_50hz_48_audio[] = {
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0x30, 0x00,
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0x31, 0xc0,
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0x32, 0x03,
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0x00, 0x00
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};
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/* 44.1 kHz 60hz */
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static const unsigned char saa7115_cfg_60hz_441_audio[] = {
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0x30, 0xbc,
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0x31, 0xdf,
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0x32, 0x02,
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0x00, 0x00
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};
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/* 44.1 kHz 50hz */
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static const unsigned char saa7115_cfg_50hz_441_audio[] = {
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0x30, 0x00,
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0x31, 0x72,
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0x32, 0x03,
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0x00, 0x00
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};
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/* 32.0 kHz 60hz */
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static const unsigned char saa7115_cfg_60hz_32_audio[] = {
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0x30, 0xde,
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0x31, 0x15,
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0x32, 0x02,
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0x00, 0x00
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};
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/* 32.0 kHz 50hz */
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static const unsigned char saa7115_cfg_50hz_32_audio[] = {
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0x30, 0x00,
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0x31, 0x80,
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0x32, 0x02,
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0x00, 0x00
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};
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static int saa7115_odd_parity(u8 c)
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{
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c ^= (c >> 4);
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@ -627,40 +554,38 @@ static int saa7115_decode_wss(u8 * p)
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}
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static int saa7115_set_audio_clock_freq(struct i2c_client *client, enum v4l2_audio_clock_freq freq)
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static int saa7115_set_audio_clock_freq(struct i2c_client *client, u32 freq)
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{
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struct saa7115_state *state = i2c_get_clientdata(client);
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u32 acpf;
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u32 acni;
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u32 hz;
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u64 f;
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saa7115_dbg("set audio clock freq: %d\n", freq);
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switch (freq) {
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case V4L2_AUDCLK_32_KHZ:
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saa7115_writeregs(client, saa7115_cfg_32_audio);
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if (state->std & V4L2_STD_525_60) {
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saa7115_writeregs(client, saa7115_cfg_60hz_32_audio);
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} else {
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saa7115_writeregs(client, saa7115_cfg_50hz_32_audio);
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}
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break;
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case V4L2_AUDCLK_441_KHZ:
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saa7115_writeregs(client, saa7115_cfg_441_audio);
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if (state->std & V4L2_STD_525_60) {
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saa7115_writeregs(client, saa7115_cfg_60hz_441_audio);
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} else {
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saa7115_writeregs(client, saa7115_cfg_50hz_441_audio);
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}
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break;
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case V4L2_AUDCLK_48_KHZ:
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saa7115_writeregs(client, saa7115_cfg_48_audio);
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if (state->std & V4L2_STD_525_60) {
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saa7115_writeregs(client, saa7115_cfg_60hz_48_audio);
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} else {
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saa7115_writeregs(client, saa7115_cfg_50hz_48_audio);
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}
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break;
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default:
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saa7115_dbg("invalid audio setting %d\n", freq);
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return -EINVAL;
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}
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/* sanity check */
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if (freq < 32000 || freq > 48000)
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return -EINVAL;
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/* hz is the refresh rate times 100 */
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hz = (state->std & V4L2_STD_525_60) ? 5994 : 5000;
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/* acpf = (256 * freq) / field_frequency == (256 * 100 * freq) / hz */
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acpf = (25600 * freq) / hz;
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/* acni = (256 * freq * 2^23) / crystal_frequency =
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(freq * 2^(8+23)) / crystal_frequency =
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(freq << 31) / 32.11 MHz */
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f = freq;
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f = f << 31;
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do_div(f, 32110000);
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acni = f;
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saa7115_write(client, 0x30, acpf & 0xff);
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saa7115_write(client, 0x31, (acpf >> 8) & 0xff);
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saa7115_write(client, 0x32, (acpf >> 16) & 0x03);
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saa7115_write(client, 0x34, acni & 0xff);
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saa7115_write(client, 0x35, (acni >> 8) & 0xff);
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saa7115_write(client, 0x36, (acni >> 16) & 0x3f);
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state->audclk_freq = freq;
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return 0;
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}
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@ -773,24 +698,17 @@ static v4l2_std_id saa7115_get_v4lstd(struct i2c_client *client)
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static void saa7115_log_status(struct i2c_client *client)
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{
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struct saa7115_state *state = i2c_get_clientdata(client);
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char *audfreq = "undefined";
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int reg1e, reg1f;
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int signalOk;
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int vcr;
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switch (state->audclk_freq) {
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case V4L2_AUDCLK_32_KHZ: audfreq = "32 kHz"; break;
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case V4L2_AUDCLK_441_KHZ: audfreq = "44.1 kHz"; break;
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case V4L2_AUDCLK_48_KHZ: audfreq = "48 kHz"; break;
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}
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saa7115_info("Audio frequency: %s\n", audfreq);
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saa7115_info("Audio frequency: %d Hz\n", state->audclk_freq);
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if (client->name[6] == '4') {
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/* status for the saa7114 */
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reg1f = saa7115_read(client, 0x1f);
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signalOk = (reg1f & 0xc1) == 0x81;
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saa7115_info("Video signal: %s\n", signalOk ? "ok" : "bad");
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saa7115_info("Frequency: %s\n", (reg1f & 0x20) ? "60Hz" : "50Hz");
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saa7115_info("Frequency: %s\n", (reg1f & 0x20) ? "60 Hz" : "50 Hz");
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return;
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}
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@ -807,7 +725,7 @@ static void saa7115_log_status(struct i2c_client *client)
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saa7115_info("Input: Composite %d\n", state->input);
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}
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saa7115_info("Video signal: %s\n", signalOk ? (vcr ? "VCR" : "broadcast/DVD") : "bad");
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saa7115_info("Frequency: %s\n", (reg1f & 0x20) ? "60Hz" : "50Hz");
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saa7115_info("Frequency: %s\n", (reg1f & 0x20) ? "60 Hz" : "50 Hz");
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switch (reg1e & 0x03) {
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case 1:
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@ -1108,7 +1026,7 @@ static int saa7115_command(struct i2c_client *client, unsigned int cmd, void *ar
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return saa7115_get_v4lfmt(client, (struct v4l2_format *)arg);
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case VIDIOC_INT_AUDIO_CLOCK_FREQ:
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return saa7115_set_audio_clock_freq(client, *(enum v4l2_audio_clock_freq *)arg);
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return saa7115_set_audio_clock_freq(client, *(u32 *)arg);
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case VIDIOC_G_TUNER:
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{
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@ -1307,7 +1225,7 @@ static int saa7115_attach(struct i2c_adapter *adapter, int address, int kind)
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state->hue = 0;
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state->sat = 64;
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state->ident = (chip_id == 4) ? V4L2_IDENT_SAA7114 : V4L2_IDENT_SAA7115;
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state->audclk_freq = V4L2_AUDCLK_48_KHZ;
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state->audclk_freq = 48000;
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saa7115_dbg("writing init values\n");
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@ -1317,8 +1235,7 @@ static int saa7115_attach(struct i2c_adapter *adapter, int address, int kind)
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saa7115_writeregs(client, saa7115_cfg_60hz_fullres_x);
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saa7115_writeregs(client, saa7115_cfg_60hz_fullres_y);
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saa7115_writeregs(client, saa7115_cfg_60hz_video);
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saa7115_writeregs(client, saa7115_cfg_48_audio);
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saa7115_writeregs(client, saa7115_cfg_60hz_48_audio);
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saa7115_set_audio_clock_freq(client, state->audclk_freq);
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saa7115_writeregs(client, saa7115_cfg_reset_scaler);
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i2c_attach_client(client);
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@ -26,13 +26,6 @@
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#ifndef V4L2_COMMON_H_
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#define V4L2_COMMON_H_
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/* VIDIOC_INT_AUDIO_CLOCK_FREQ */
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enum v4l2_audio_clock_freq {
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V4L2_AUDCLK_32_KHZ = 32000,
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V4L2_AUDCLK_441_KHZ = 44100,
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V4L2_AUDCLK_48_KHZ = 48000,
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};
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/* VIDIOC_INT_G_REGISTER and VIDIOC_INT_S_REGISTER */
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struct v4l2_register {
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u32 i2c_id; /* I2C driver ID of the I2C chip. 0 for the I2C adapter. */
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@ -77,10 +70,12 @@ enum v4l2_chip_ident {
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/* Reset the I2C chip */
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#define VIDIOC_INT_RESET _IO ('d', 102)
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/* Set the frequency of the audio clock output.
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/* Set the frequency (in Hz) of the audio clock output.
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Used to slave an audio processor to the video decoder, ensuring that audio
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and video remain synchronized. */
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#define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOR ('d', 103, enum v4l2_audio_clock_freq)
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and video remain synchronized.
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Usual values for the frequency are 48000, 44100 or 32000 Hz.
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If the frequency is not supported, then -EINVAL is returned. */
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#define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32)
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/* Video decoders that support sliced VBI need to implement this ioctl.
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Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI
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