--- /dev/null
+/*
+ *
+ * device driver for philips saa7134 based TV cards
+ * tv audio decoder (fm stereo, nicam, ...)
+ *
+ * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/delay.h>
+#include <linux/freezer.h>
+#include <asm/div64.h>
+
+#include "saa7134-reg.h"
+#include "saa7134.h"
+
+/* ------------------------------------------------------------------ */
+
+static unsigned int audio_debug;
+module_param(audio_debug, int, 0644);
+MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
+
+static unsigned int audio_ddep;
+module_param(audio_ddep, int, 0644);
+MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
+
+static int audio_clock_override = UNSET;
+module_param(audio_clock_override, int, 0644);
+
+static int audio_clock_tweak;
+module_param(audio_clock_tweak, int, 0644);
+MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
+
+#define dprintk(fmt, arg...) if (audio_debug) \
+ printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
+#define d2printk(fmt, arg...) if (audio_debug > 1) \
+ printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
+
+#define print_regb(reg) printk("%s: reg 0x%03x [%-16s]: 0x%02x\n", \
+ dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
+
+/* msecs */
+#define SCAN_INITIAL_DELAY 1000
+#define SCAN_SAMPLE_DELAY 200
+#define SCAN_SUBCARRIER_DELAY 2000
+
+/* ------------------------------------------------------------------ */
+/* saa7134 code */
+
+static struct mainscan {
+ char *name;
+ v4l2_std_id std;
+ int carr;
+} mainscan[] = {
+ {
+ .name = "MN",
+ .std = V4L2_STD_MN,
+ .carr = 4500,
+ },{
+ .name = "BGH",
+ .std = V4L2_STD_B | V4L2_STD_GH,
+ .carr = 5500,
+ },{
+ .name = "I",
+ .std = V4L2_STD_PAL_I,
+ .carr = 6000,
+ },{
+ .name = "DKL",
+ .std = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
+ .carr = 6500,
+ }
+};
+
+static struct saa7134_tvaudio tvaudio[] = {
+ {
+ .name = "PAL-B/G FM-stereo",
+ .std = V4L2_STD_PAL_BG,
+ .mode = TVAUDIO_FM_BG_STEREO,
+ .carr1 = 5500,
+ .carr2 = 5742,
+ },{
+ .name = "PAL-D/K1 FM-stereo",
+ .std = V4L2_STD_PAL_DK,
+ .carr1 = 6500,
+ .carr2 = 6258,
+ .mode = TVAUDIO_FM_BG_STEREO,
+ },{
+ .name = "PAL-D/K2 FM-stereo",
+ .std = V4L2_STD_PAL_DK,
+ .carr1 = 6500,
+ .carr2 = 6742,
+ .mode = TVAUDIO_FM_BG_STEREO,
+ },{
+ .name = "PAL-D/K3 FM-stereo",
+ .std = V4L2_STD_PAL_DK,
+ .carr1 = 6500,
+ .carr2 = 5742,
+ .mode = TVAUDIO_FM_BG_STEREO,
+ },{
+ .name = "PAL-B/G NICAM",
+ .std = V4L2_STD_PAL_BG,
+ .carr1 = 5500,
+ .carr2 = 5850,
+ .mode = TVAUDIO_NICAM_FM,
+ },{
+ .name = "PAL-I NICAM",
+ .std = V4L2_STD_PAL_I,
+ .carr1 = 6000,
+ .carr2 = 6552,
+ .mode = TVAUDIO_NICAM_FM,
+ },{
+ .name = "PAL-D/K NICAM",
+ .std = V4L2_STD_PAL_DK,
+ .carr1 = 6500,
+ .carr2 = 5850,
+ .mode = TVAUDIO_NICAM_FM,
+ },{
+ .name = "SECAM-L NICAM",
+ .std = V4L2_STD_SECAM_L,
+ .carr1 = 6500,
+ .carr2 = 5850,
+ .mode = TVAUDIO_NICAM_AM,
+ },{
+ .name = "SECAM-D/K NICAM",
+ .std = V4L2_STD_SECAM_DK,
+ .carr1 = 6500,
+ .carr2 = 5850,
+ .mode = TVAUDIO_NICAM_FM,
+ },{
+ .name = "NTSC-A2 FM-stereo",
+ .std = V4L2_STD_NTSC,
+ .carr1 = 4500,
+ .carr2 = 4724,
+ .mode = TVAUDIO_FM_K_STEREO,
+ },{
+ .name = "NTSC-M",
+ .std = V4L2_STD_NTSC,
+ .carr1 = 4500,
+ .carr2 = -1,
+ .mode = TVAUDIO_FM_MONO,
+ }
+};
+#define TVAUDIO ARRAY_SIZE(tvaudio)
+
+/* ------------------------------------------------------------------ */
+
+static u32 tvaudio_carr2reg(u32 carrier)
+{
+ u64 a = carrier;
+
+ a <<= 24;
+ do_div(a,12288);
+ return a;
+}
+
+static void tvaudio_setcarrier(struct saa7134_dev *dev,
+ int primary, int secondary)
+{
+ if (-1 == secondary)
+ secondary = primary;
+ saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
+ saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
+}
+
+#define SAA7134_MUTE_MASK 0xbb
+#define SAA7134_MUTE_ANALOG 0x04
+#define SAA7134_MUTE_I2S 0x40
+
+static void mute_input_7134(struct saa7134_dev *dev)
+{
+ unsigned int mute;
+ struct saa7134_input *in;
+ int ausel=0, ics=0, ocs=0;
+ int mask;
+
+ /* look what is to do ... */
+ in = dev->input;
+ mute = (dev->ctl_mute ||
+ (dev->automute && (&card(dev).radio) != in));
+ if (card(dev).mute.name) {
+ /*
+ * 7130 - we'll mute using some unconnected audio input
+ * 7134 - we'll probably should switch external mux with gpio
+ */
+ if (mute)
+ in = &card(dev).mute;
+ }
+
+ if (dev->hw_mute == mute &&
+ dev->hw_input == in && !dev->insuspend) {
+ dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
+ mute,in->name);
+ return;
+ }
+
+ dprintk("ctl_mute=%d automute=%d input=%s => mute=%d input=%s\n",
+ dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
+ dev->hw_mute = mute;
+ dev->hw_input = in;
+
+ if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
+ /* 7134 mute */
+ saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
+ SAA7134_MUTE_MASK |
+ SAA7134_MUTE_ANALOG |
+ SAA7134_MUTE_I2S :
+ SAA7134_MUTE_MASK);
+
+ /* switch internal audio mux */
+ switch (in->amux) {
+ case TV: ausel=0xc0; ics=0x00; ocs=0x02; break;
+ case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break;
+ case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break;
+ case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
+ }
+ saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
+ saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
+ saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
+ // for oss, we need to change the clock configuration
+ if (in->amux == TV)
+ saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
+ else
+ saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x01);
+
+ /* switch gpio-connected external audio mux */
+ if (0 == card(dev).gpiomask)
+ return;
+
+ mask = card(dev).gpiomask;
+ saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
+ saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
+ saa7134_track_gpio(dev,in->name);
+}
+
+static void tvaudio_setmode(struct saa7134_dev *dev,
+ struct saa7134_tvaudio *audio,
+ char *note)
+{
+ int acpf, tweak = 0;
+
+ if (dev->tvnorm->id == V4L2_STD_NTSC) {
+ acpf = 0x19066;
+ } else {
+ acpf = 0x1e000;
+ }
+ if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
+ tweak = audio_clock_tweak;
+
+ if (note)
+ dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
+ note,audio->name,
+ audio->carr1 / 1000, audio->carr1 % 1000,
+ audio->carr2 / 1000, audio->carr2 % 1000,
+ acpf, tweak);
+
+ acpf += tweak;
+ saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
+ saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
+ saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
+ tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
+
+ switch (audio->mode) {
+ case TVAUDIO_FM_MONO:
+ case TVAUDIO_FM_BG_STEREO:
+ saa_writeb(SAA7134_DEMODULATOR, 0x00);
+ saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
+ saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
+ saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
+ saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
+ break;
+ case TVAUDIO_FM_K_STEREO:
+ saa_writeb(SAA7134_DEMODULATOR, 0x00);
+ saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x01);
+ saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
+ saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
+ saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
+ break;
+ case TVAUDIO_NICAM_FM:
+ saa_writeb(SAA7134_DEMODULATOR, 0x10);
+ saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
+ saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
+ saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
+ saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
+ break;
+ case TVAUDIO_NICAM_AM:
+ saa_writeb(SAA7134_DEMODULATOR, 0x12);
+ saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
+ saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
+ saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
+ saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
+ break;
+ case TVAUDIO_FM_SAT_STEREO:
+ /* not implemented (yet) */
+ break;
+ }
+}
+
+static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
+{
+ if (dev->thread.scan1 == dev->thread.scan2 &&
+ !kthread_should_stop()) {
+ if (timeout < 0) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
+ } else {
+ schedule_timeout_interruptible
+ (msecs_to_jiffies(timeout));
+ }
+ }
+ return dev->thread.scan1 != dev->thread.scan2;
+}
+
+static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
+{
+ __s32 left,right,value;
+
+ if (!(dev->tvnorm->id & scan->std)) {
+ value = 0;
+ dprintk("skipping %d.%03d MHz [%4s]\n",
+ scan->carr / 1000, scan->carr % 1000, scan->name);
+ return 0;
+ }
+
+ if (audio_debug > 1) {
+ int i;
+ dprintk("debug %d:",scan->carr);
+ for (i = -150; i <= 150; i += 30) {
+ tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
+ saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
+ if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
+ return -1;
+ value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
+ if (0 == i)
+ printk(" # %6d # ",value >> 16);
+ else
+ printk(" %6d",value >> 16);
+ }
+ printk("\n");
+ }
+
+ tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
+ saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
+ if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
+ return -1;
+ left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
+
+ tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
+ saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
+ if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
+ return -1;
+ right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
+
+ left >>= 16;
+ right >>= 16;
+ value = left > right ? left - right : right - left;
+ dprintk("scanning %d.%03d MHz [%4s] => dc is %5d [%d/%d]\n",
+ scan->carr / 1000, scan->carr % 1000,
+ scan->name, value, left, right);
+ return value;
+}
+
+
+static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
+{
+ __u32 idp, nicam, nicam_status;
+ int retval = -1;
+
+ switch (audio->mode) {
+ case TVAUDIO_FM_MONO:
+ return V4L2_TUNER_SUB_MONO;
+ case TVAUDIO_FM_K_STEREO:
+ case TVAUDIO_FM_BG_STEREO:
+ idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
+ dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
+ if (0x03 == (idp & 0x03))
+ retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+ else if (0x05 == (idp & 0x05))
+ retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+ else if (0x01 == (idp & 0x01))
+ retval = V4L2_TUNER_SUB_MONO;
+ break;
+ case TVAUDIO_FM_SAT_STEREO:
+ /* not implemented (yet) */
+ break;
+ case TVAUDIO_NICAM_FM:
+ case TVAUDIO_NICAM_AM:
+ nicam = saa_readb(SAA7134_AUDIO_STATUS);
+ dprintk("getstereo: nicam=0x%x\n",nicam);
+ if (nicam & 0x1) {
+ nicam_status = saa_readb(SAA7134_NICAM_STATUS);
+ dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
+
+ switch (nicam_status & 0x03) {
+ case 0x01:
+ retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+ break;
+ case 0x02:
+ retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+ break;
+ default:
+ retval = V4L2_TUNER_SUB_MONO;
+ }
+ } else {
+ /* No nicam detected */
+ }
+ break;
+ }
+ if (retval != -1)
+ dprintk("found audio subchannels:%s%s%s%s\n",
+ (retval & V4L2_TUNER_SUB_MONO) ? " mono" : "",
+ (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
+ (retval & V4L2_TUNER_SUB_LANG1) ? " lang1" : "",
+ (retval & V4L2_TUNER_SUB_LANG2) ? " lang2" : "");
+ return retval;
+}
+
+static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
+ u32 mode)
+{
+ static char *name[] = {
+ [ V4L2_TUNER_MODE_MONO ] = "mono",
+ [ V4L2_TUNER_MODE_STEREO ] = "stereo",
+ [ V4L2_TUNER_MODE_LANG1 ] = "lang1",
+ [ V4L2_TUNER_MODE_LANG2 ] = "lang2",
+ [ V4L2_TUNER_MODE_LANG1_LANG2 ] = "lang1+lang2",
+ };
+ static u32 fm[] = {
+ [ V4L2_TUNER_MODE_MONO ] = 0x00, /* ch1 */
+ [ V4L2_TUNER_MODE_STEREO ] = 0x80, /* auto */
+ [ V4L2_TUNER_MODE_LANG1 ] = 0x00, /* ch1 */
+ [ V4L2_TUNER_MODE_LANG2 ] = 0x01, /* ch2 */
+ [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80, /* auto */
+ };
+ u32 reg;
+
+ switch (audio->mode) {
+ case TVAUDIO_FM_MONO:
+ /* nothing to do ... */
+ break;
+ case TVAUDIO_FM_K_STEREO:
+ case TVAUDIO_FM_BG_STEREO:
+ case TVAUDIO_NICAM_AM:
+ case TVAUDIO_NICAM_FM:
+ dprintk("setstereo [fm] => %s\n",
+ name[ mode % ARRAY_SIZE(name) ]);
+ reg = fm[ mode % ARRAY_SIZE(fm) ];
+ saa_writeb(SAA7134_FM_DEMATRIX, reg);
+ break;
+ case TVAUDIO_FM_SAT_STEREO:
+ /* Not implemented */
+ break;
+ }
+ return 0;
+}
+
+static int tvaudio_thread(void *data)
+{
+ struct saa7134_dev *dev = data;
+ int carr_vals[ARRAY_SIZE(mainscan)];
+ unsigned int i, audio, nscan;
+ int max1,max2,carrier,rx,mode,lastmode,default_carrier;
+
+ set_freezable();
+
+ for (;;) {
+ tvaudio_sleep(dev,-1);
+ if (kthread_should_stop())
+ goto done;
+
+ restart:
+ try_to_freeze();
+
+ dev->thread.scan1 = dev->thread.scan2;
+ dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
+ dev->tvaudio = NULL;
+
+ saa_writeb(SAA7134_MONITOR_SELECT, 0xa0);
+ saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
+
+ if (dev->ctl_automute)
+ dev->automute = 1;
+
+ mute_input_7134(dev);
+
+ /* give the tuner some time */
+ if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
+ goto restart;
+
+ max1 = 0;
+ max2 = 0;
+ nscan = 0;
+ carrier = 0;
+ default_carrier = 0;
+ for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
+ if (!(dev->tvnorm->id & mainscan[i].std))
+ continue;
+ if (!default_carrier)
+ default_carrier = mainscan[i].carr;
+ nscan++;
+ }
+
+ if (1 == nscan) {
+ /* only one candidate -- skip scan ;) */
+ dprintk("only one main carrier candidate - skipping scan\n");
+ max1 = 12345;
+ carrier = default_carrier;
+ } else {
+ /* scan for the main carrier */
+ saa_writeb(SAA7134_MONITOR_SELECT,0x00);
+ tvaudio_setmode(dev,&tvaudio[0],NULL);
+ for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
+ carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
+ if (dev->thread.scan1 != dev->thread.scan2)
+ goto restart;
+ }
+ for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
+ if (max1 < carr_vals[i]) {
+ max2 = max1;
+ max1 = carr_vals[i];
+ carrier = mainscan[i].carr;
+ } else if (max2 < carr_vals[i]) {
+ max2 = carr_vals[i];
+ }
+ }
+ }
+
+ if (0 != carrier && max1 > 2000 && max1 > max2*3) {
+ /* found good carrier */
+ dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
+ dev->tvnorm->name, carrier/1000, carrier%1000,
+ max1, max2);
+ dev->last_carrier = carrier;
+ dev->automute = 0;
+
+ } else if (0 != dev->last_carrier) {
+ /* no carrier -- try last detected one as fallback */
+ carrier = dev->last_carrier;
+ dprintk("audio carrier scan failed, "
+ "using %d.%03d MHz [last detected]\n",
+ carrier/1000, carrier%1000);
+ dev->automute = 1;
+
+ } else {
+ /* no carrier + no fallback -- use default */
+ carrier = default_carrier;
+ dprintk("audio carrier scan failed, "
+ "using %d.%03d MHz [default]\n",
+ carrier/1000, carrier%1000);
+ dev->automute = 1;
+ }
+ tvaudio_setcarrier(dev,carrier,carrier);
+ saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
+ saa7134_tvaudio_setmute(dev);
+ /* find the exact tv audio norm */
+ for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
+ if (dev->tvnorm->id != UNSET &&
+ !(dev->tvnorm->id & tvaudio[i].std))
+ continue;
+ if (tvaudio[i].carr1 != carrier)
+ continue;
+ /* Note: at least the primary carrier is right here */
+ if (UNSET == audio)
+ audio = i;
+ tvaudio_setmode(dev,&tvaudio[i],"trying");
+ if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
+ goto restart;
+ if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
+ audio = i;
+ break;
+ }
+ }
+ saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
+ if (UNSET == audio)
+ continue;
+ tvaudio_setmode(dev,&tvaudio[audio],"using");
+
+ tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
+ dev->tvaudio = &tvaudio[audio];
+
+ lastmode = 42;
+ for (;;) {
+
+ try_to_freeze();
+
+ if (tvaudio_sleep(dev,5000))
+ goto restart;
+ if (kthread_should_stop())
+ break;
+ if (UNSET == dev->thread.mode) {
+ rx = tvaudio_getstereo(dev, &tvaudio[audio]);
+ mode = saa7134_tvaudio_rx2mode(rx);
+ } else {
+ mode = dev->thread.mode;
+ }
+ if (lastmode != mode) {
+ tvaudio_setstereo(dev,&tvaudio[audio],mode);
+ lastmode = mode;
+ }
+ }
+ }
+
+ done:
+ dev->thread.stopped = 1;
+ return 0;
+}
+
+/* ------------------------------------------------------------------ */
+/* saa7133 / saa7135 code */
+
+static char *stdres[0x20] = {
+ [0x00] = "no standard detected",
+ [0x01] = "B/G (in progress)",
+ [0x02] = "D/K (in progress)",
+ [0x03] = "M (in progress)",
+
+ [0x04] = "B/G A2",
+ [0x05] = "B/G NICAM",
+ [0x06] = "D/K A2 (1)",
+ [0x07] = "D/K A2 (2)",
+ [0x08] = "D/K A2 (3)",
+ [0x09] = "D/K NICAM",
+ [0x0a] = "L NICAM",
+ [0x0b] = "I NICAM",
+
+ [0x0c] = "M Korea",
+ [0x0d] = "M BTSC ",
+ [0x0e] = "M EIAJ",
+
+ [0x0f] = "FM radio / IF 10.7 / 50 deemp",
+ [0x10] = "FM radio / IF 10.7 / 75 deemp",
+ [0x11] = "FM radio / IF sel / 50 deemp",
+ [0x12] = "FM radio / IF sel / 75 deemp",
+
+ [0x13 ... 0x1e ] = "unknown",
+ [0x1f] = "??? [in progress]",
+};
+
+#define DSP_RETRY 32
+#define DSP_DELAY 16
+#define SAA7135_DSP_RWCLEAR_RERR 1
+
+static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
+{
+ int state = saa_readb(SAA7135_DSP_RWSTATE);
+ if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
+ d2printk("%s: resetting error bit\n", dev->name);
+ saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
+ }
+ return 0;
+}
+
+static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
+{
+ int state, count = DSP_RETRY;
+
+ state = saa_readb(SAA7135_DSP_RWSTATE);
+ if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
+ printk(KERN_WARNING "%s: dsp access error\n", dev->name);
+ saa_dsp_reset_error_bit(dev);
+ return -EIO;
+ }
+ while (0 == (state & bit)) {
+ if (unlikely(0 == count)) {
+ printk("%s: dsp access wait timeout [bit=%s]\n",
+ dev->name,
+ (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
+ (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
+ (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
+ "???");
+ return -EIO;
+ }
+ saa_wait(DSP_DELAY);
+ state = saa_readb(SAA7135_DSP_RWSTATE);
+ count--;
+ }
+ return 0;
+}
+
+
+int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
+{
+ int err;
+
+ d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
+ err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
+ if (err < 0)
+ return err;
+ saa_writel(reg,value);
+ err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
+ if (err < 0)
+ return err;
+ return 0;
+}
+
+static int getstereo_7133(struct saa7134_dev *dev)
+{
+ int retval = V4L2_TUNER_SUB_MONO;
+ u32 value;
+
+ value = saa_readl(0x528 >> 2);
+ if (value & 0x20)
+ retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+ if (value & 0x40)
+ retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+ return retval;
+}
+
+static int mute_input_7133(struct saa7134_dev *dev)
+{
+ u32 reg = 0;
+ u32 xbarin, xbarout;
+ int mask;
+ struct saa7134_input *in;
+
+ xbarin = 0x03;
+ switch (dev->input->amux) {
+ case TV:
+ reg = 0x02;
+ xbarin = 0;
+ break;
+ case LINE1:
+ reg = 0x00;
+ break;
+ case LINE2:
+ case LINE2_LEFT:
+ reg = 0x09;
+ break;
+ }
+ saa_dsp_writel(dev, 0x464 >> 2, xbarin);
+ if (dev->ctl_mute) {
+ reg = 0x07;
+ xbarout = 0xbbbbbb;
+ } else
+ xbarout = 0xbbbb10;
+ saa_dsp_writel(dev, 0x46c >> 2, xbarout);
+
+ saa_writel(0x594 >> 2, reg);
+
+
+ /* switch gpio-connected external audio mux */
+ if (0 != card(dev).gpiomask) {
+ mask = card(dev).gpiomask;
+
+ if (card(dev).mute.name && dev->ctl_mute)
+ in = &card(dev).mute;
+ else
+ in = dev->input;
+
+ saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
+ saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
+ saa7134_track_gpio(dev,in->name);
+ }
+
+ return 0;
+}
+
+static int tvaudio_thread_ddep(void *data)
+{
+ struct saa7134_dev *dev = data;
+ u32 value, norms;
+
+ set_freezable();
+ for (;;) {
+ tvaudio_sleep(dev,-1);
+ if (kthread_should_stop())
+ goto done;
+ restart:
+ try_to_freeze();
+
+ dev->thread.scan1 = dev->thread.scan2;
+ dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
+
+ if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
+ /* insmod option override */
+ norms = (audio_ddep << 2) | 0x01;
+ dprintk("ddep override: %s\n",stdres[audio_ddep]);
+ } else if (&card(dev).radio == dev->input) {
+ dprintk("FM Radio\n");
+ if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
+ norms = (0x11 << 2) | 0x01;
+ /* set IF frequency to 5.5 MHz */
+ saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
+ } else {
+ norms = (0x0f << 2) | 0x01;
+ }
+ } else {
+ /* (let chip) scan for sound carrier */
+ norms = 0;
+ if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
+ norms |= 0x04;
+ if (dev->tvnorm->id & V4L2_STD_PAL_I)
+ norms |= 0x20;
+ if (dev->tvnorm->id & V4L2_STD_DK)
+ norms |= 0x08;
+ if (dev->tvnorm->id & V4L2_STD_MN)
+ norms |= 0x40;
+ if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
+ norms |= 0x10;
+ if (0 == norms)
+ norms = 0x7c; /* all */
+ dprintk("scanning:%s%s%s%s%s\n",
+ (norms & 0x04) ? " B/G" : "",
+ (norms & 0x08) ? " D/K" : "",
+ (norms & 0x10) ? " L/L'" : "",
+ (norms & 0x20) ? " I" : "",
+ (norms & 0x40) ? " M" : "");
+ }
+
+ /* kick automatic standard detection */
+ saa_dsp_writel(dev, 0x454 >> 2, 0);
+ saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
+
+ /* setup crossbars */
+ saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
+ saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
+
+ if (tvaudio_sleep(dev,3000))
+ goto restart;
+ value = saa_readl(0x528 >> 2) & 0xffffff;
+
+ dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
+ value, stdres[value & 0x1f],
+ (value & 0x000020) ? ",stereo" : "",
+ (value & 0x000040) ? ",dual" : "");
+ dprintk("detailed status: "
+ "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
+ (value & 0x000080) ? " A2/EIAJ pilot tone " : "",
+ (value & 0x000100) ? " A2/EIAJ dual " : "",
+ (value & 0x000200) ? " A2/EIAJ stereo " : "",
+ (value & 0x000400) ? " A2/EIAJ noise mute " : "",
+
+ (value & 0x000800) ? " BTSC/FM radio pilot " : "",
+ (value & 0x001000) ? " SAP carrier " : "",
+ (value & 0x002000) ? " BTSC stereo noise mute " : "",
+ (value & 0x004000) ? " SAP noise mute " : "",
+ (value & 0x008000) ? " VDSP " : "",
+
+ (value & 0x010000) ? " NICST " : "",
+ (value & 0x020000) ? " NICDU " : "",
+ (value & 0x040000) ? " NICAM muted " : "",
+ (value & 0x080000) ? " NICAM reserve sound " : "",
+
+ (value & 0x100000) ? " init done " : "");
+ }
+
+ done:
+ dev->thread.stopped = 1;
+ return 0;
+}
+
+/* ------------------------------------------------------------------ */
+/* common stuff + external entry points */
+
+void saa7134_enable_i2s(struct saa7134_dev *dev)
+{
+ int i2s_format;
+
+ if (!card_is_empress(dev))
+ return;
+
+ if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
+ return;
+
+ /* configure GPIO for out */
+ saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
+
+ switch (dev->pci->device) {
+ case PCI_DEVICE_ID_PHILIPS_SAA7133:
+ case PCI_DEVICE_ID_PHILIPS_SAA7135:
+ /* Set I2S format (SONY) */
+ saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
+ /* Start I2S */
+ saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
+ break;
+
+ case PCI_DEVICE_ID_PHILIPS_SAA7134:
+ i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
+
+ /* enable I2S audio output for the mpeg encoder */
+ saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
+ saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
+ saa_writeb(SAA7134_I2S_OUTPUT_LEVEL, 0x0F);
+ saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x01);
+
+ default:
+ break;
+ }
+}
+
+int saa7134_tvaudio_rx2mode(u32 rx)
+{
+ u32 mode;
+
+ mode = V4L2_TUNER_MODE_MONO;
+ if (rx & V4L2_TUNER_SUB_STEREO)
+ mode = V4L2_TUNER_MODE_STEREO;
+ else if (rx & V4L2_TUNER_SUB_LANG1)
+ mode = V4L2_TUNER_MODE_LANG1;
+ else if (rx & V4L2_TUNER_SUB_LANG2)
+ mode = V4L2_TUNER_MODE_LANG2;
+ return mode;
+}
+
+void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
+{
+ switch (dev->pci->device) {
+ case PCI_DEVICE_ID_PHILIPS_SAA7130:
+ case PCI_DEVICE_ID_PHILIPS_SAA7134:
+ mute_input_7134(dev);
+ break;
+ case PCI_DEVICE_ID_PHILIPS_SAA7133:
+ case PCI_DEVICE_ID_PHILIPS_SAA7135:
+ mute_input_7133(dev);
+ break;
+ }
+}
+
+void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
+ struct saa7134_input *in)
+{
+ dev->input = in;
+ switch (dev->pci->device) {
+ case PCI_DEVICE_ID_PHILIPS_SAA7130:
+ case PCI_DEVICE_ID_PHILIPS_SAA7134:
+ mute_input_7134(dev);
+ break;
+ case PCI_DEVICE_ID_PHILIPS_SAA7133:
+ case PCI_DEVICE_ID_PHILIPS_SAA7135:
+ mute_input_7133(dev);
+ break;
+ }
+ saa7134_enable_i2s(dev);
+}
+
+void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
+{
+ switch (dev->pci->device) {
+ case PCI_DEVICE_ID_PHILIPS_SAA7134:
+ saa_writeb(SAA7134_CHANNEL1_LEVEL, level & 0x1f);
+ saa_writeb(SAA7134_CHANNEL2_LEVEL, level & 0x1f);
+ saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
+ break;
+ }
+}
+
+int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
+{
+ int retval = V4L2_TUNER_SUB_MONO;
+
+ switch (dev->pci->device) {
+ case PCI_DEVICE_ID_PHILIPS_SAA7134:
+ if (dev->tvaudio)
+ retval = tvaudio_getstereo(dev,dev->tvaudio);
+ break;
+ case PCI_DEVICE_ID_PHILIPS_SAA7133:
+ case PCI_DEVICE_ID_PHILIPS_SAA7135:
+ retval = getstereo_7133(dev);
+ break;
+ }
+ return retval;
+}
+
+void saa7134_tvaudio_init(struct saa7134_dev *dev)
+{
+ int clock = saa7134_boards[dev->board].audio_clock;
+
+ if (UNSET != audio_clock_override)
+ clock = audio_clock_override;
+
+ switch (dev->pci->device) {
+ case PCI_DEVICE_ID_PHILIPS_SAA7134:
+ /* init all audio registers */
+ saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x00);
+ if (need_resched())
+ schedule();
+ else
+ udelay(10);
+
+ saa_writeb(SAA7134_AUDIO_CLOCK0, clock & 0xff);
+ saa_writeb(SAA7134_AUDIO_CLOCK1, (clock >> 8) & 0xff);
+ saa_writeb(SAA7134_AUDIO_CLOCK2, (clock >> 16) & 0xff);
+ /* frame locked audio is mandatory for NICAM */
+ saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01);
+ saa_writeb(SAA7134_NICAM_ERROR_LOW, 0x14);
+ saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
+ break;
+ case PCI_DEVICE_ID_PHILIPS_SAA7133:
+ case PCI_DEVICE_ID_PHILIPS_SAA7135:
+ saa_writel(0x598 >> 2, clock);
+ saa_dsp_writel(dev, 0x474 >> 2, 0x00);
+ saa_dsp_writel(dev, 0x450 >> 2, 0x00);
+ }
+}
+
+int saa7134_tvaudio_init2(struct saa7134_dev *dev)
+{
+ int (*my_thread)(void *data) = NULL;
+
+ switch (dev->pci->device) {
+ case PCI_DEVICE_ID_PHILIPS_SAA7134:
+ my_thread = tvaudio_thread;
+ break;
+ case PCI_DEVICE_ID_PHILIPS_SAA7133:
+ case PCI_DEVICE_ID_PHILIPS_SAA7135:
+ my_thread = tvaudio_thread_ddep;
+ break;
+ }
+
+ dev->thread.thread = NULL;
+ dev->thread.scan1 = dev->thread.scan2 = 0;
+ if (my_thread) {
+ saa7134_tvaudio_init(dev);
+ /* start tvaudio thread */
+ dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
+ if (IS_ERR(dev->thread.thread)) {
+ printk(KERN_WARNING "%s: kernel_thread() failed\n",
+ dev->name);
+ /* XXX: missing error handling here */
+ }
+ }
+
+ saa7134_enable_i2s(dev);
+ return 0;
+}
+
+int saa7134_tvaudio_close(struct saa7134_dev *dev)
+{
+ dev->automute = 1;
+ /* anything else to undo? */
+ return 0;
+}
+
+int saa7134_tvaudio_fini(struct saa7134_dev *dev)
+{
+ /* shutdown tvaudio thread */
+ if (dev->thread.thread && !dev->thread.stopped)
+ kthread_stop(dev->thread.thread);
+
+ saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
+ return 0;
+}
+
+int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
+{
+ if (dev->input->amux != TV) {
+ dprintk("sound IF not in use, skipping scan\n");
+ dev->automute = 0;
+ saa7134_tvaudio_setmute(dev);
+ } else if (dev->thread.thread) {
+ dev->thread.mode = UNSET;
+ dev->thread.scan2++;
+
+ if (!dev->insuspend && !dev->thread.stopped)
+ wake_up_process(dev->thread.thread);
+ } else {
+ dev->automute = 0;
+ saa7134_tvaudio_setmute(dev);
+ }
+ return 0;
+}
+
+EXPORT_SYMBOL(saa_dsp_writel);
+EXPORT_SYMBOL(saa7134_tvaudio_setmute);
Code Review / kvmfornfv.git / blobdiff