diff options
Diffstat (limited to 'drivers/media/video/saa7134/saa7134-tvaudio.c')
| -rw-r--r-- | drivers/media/video/saa7134/saa7134-tvaudio.c | 1031 |
1 files changed, 1031 insertions, 0 deletions
diff --git a/drivers/media/video/saa7134/saa7134-tvaudio.c b/drivers/media/video/saa7134/saa7134-tvaudio.c new file mode 100644 index 000000000000..ecac13c006d5 --- /dev/null +++ b/drivers/media/video/saa7134/saa7134-tvaudio.c @@ -0,0 +1,1031 @@ +/* + * $Id: saa7134-tvaudio.c,v 1.22 2005/01/07 13:11:19 kraxel Exp $ + * + * 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/moduleparam.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/smp_lock.h> +#include <asm/div64.h> + +#include "saa7134-reg.h" +#include "saa7134.h" + +/* ------------------------------------------------------------------ */ + +static unsigned int audio_debug = 0; +module_param(audio_debug, int, 0644); +MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]"); + +static unsigned int audio_ddep = 0; +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 = 0; +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 = "M", + .std = V4L2_STD_NTSC | V4L2_STD_PAL_M, + .carr = 4500, + },{ + .name = "BG", + .std = V4L2_STD_PAL_BG, + .carr = 5500, + },{ + .name = "I", + .std = V4L2_STD_PAL_I, + .carr = 6000, + },{ + .name = "DKL", + .std = V4L2_STD_PAL_DK | V4L2_STD_SECAM, + .carr = 6500, + } +}; + +static struct saa7134_tvaudio tvaudio[] = { + { + .name = "PAL-B/G FM-stereo", + .std = V4L2_STD_PAL, + .mode = TVAUDIO_FM_BG_STEREO, + .carr1 = 5500, + .carr2 = 5742, + },{ + .name = "PAL-D/K1 FM-stereo", + .std = V4L2_STD_PAL, + .carr1 = 6500, + .carr2 = 6258, + .mode = TVAUDIO_FM_BG_STEREO, + },{ + .name = "PAL-D/K2 FM-stereo", + .std = V4L2_STD_PAL, + .carr1 = 6500, + .carr2 = 6742, + .mode = TVAUDIO_FM_BG_STEREO, + },{ + .name = "PAL-D/K3 FM-stereo", + .std = V4L2_STD_PAL, + .carr1 = 6500, + .carr2 = 5742, + .mode = TVAUDIO_FM_BG_STEREO, + },{ + .name = "PAL-B/G NICAM", + .std = V4L2_STD_PAL, + .carr1 = 5500, + .carr2 = 5850, + .mode = TVAUDIO_NICAM_FM, + },{ + .name = "PAL-I NICAM", + .std = V4L2_STD_PAL, + .carr1 = 6000, + .carr2 = 6552, + .mode = TVAUDIO_NICAM_FM, + },{ + .name = "PAL-D/K NICAM", + .std = V4L2_STD_PAL, + .carr1 = 6500, + .carr2 = 5850, + .mode = TVAUDIO_NICAM_FM, + },{ + .name = "SECAM-L NICAM", + .std = V4L2_STD_SECAM, + .carr1 = 6500, + .carr2 = 5850, + .mode = TVAUDIO_NICAM_AM, + },{ + .name = "SECAM-D/K", + .std = V4L2_STD_SECAM, + .carr1 = 6500, + .carr2 = -1, + .mode = TVAUDIO_FM_MONO, + },{ + .name = "NTSC-M", + .std = V4L2_STD_NTSC, + .carr1 = 4500, + .carr2 = -1, + .mode = TVAUDIO_FM_MONO, + },{ + .name = "NTSC-A2 FM-stereo", + .std = V4L2_STD_NTSC, + .carr1 = 4500, + .carr2 = 4724, + .mode = TVAUDIO_FM_K_STEREO, + } +}; +#define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio)) + +/* ------------------------------------------------------------------ */ + +static void tvaudio_init(struct saa7134_dev *dev) +{ + int clock = saa7134_boards[dev->board].audio_clock; + + if (UNSET != audio_clock_override) + clock = audio_clock_override; + + /* 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); + saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01); + + saa_writeb(SAA7134_NICAM_ERROR_LOW, 0x14); + saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50); + saa_writeb(SAA7134_MONITOR_SELECT, 0xa0); + saa_writeb(SAA7134_FM_DEMATRIX, 0x80); +} + +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)); +} + +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 (PCI_DEVICE_ID_PHILIPS_SAA7130 == dev->pci->device && + card(dev).mute.name) { + /* 7130 - we'll mute using some unconnected audio input */ + if (mute) + in = &card(dev).mute; + } + if (dev->hw_mute == mute && + dev->hw_input == in) { + 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 ? 0xbf : 0xbb); + + /* 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); + + /* 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) +{ + DECLARE_WAITQUEUE(wait, current); + + add_wait_queue(&dev->thread.wq, &wait); + if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) { + if (timeout < 0) { + set_current_state(TASK_INTERRUPTIBLE); + schedule(); + } else { +#if 0 + /* hmm, that one doesn't return on wakeup ... */ + msleep_interruptible(timeout); +#else + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(msecs_to_jiffies(timeout)); +#endif + } + } + remove_wait_queue(&dev->thread.wq, &wait); + return dev->thread.scan1 != dev->thread.scan2; +} + +static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan) +{ + __s32 left,right,value; + + 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"); + } + + if (dev->tvnorm->id & scan->std) { + 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); + } else { + value = 0; + dprintk("skipping %d.%03d MHz [%4s]\n", + scan->carr / 1000, scan->carr % 1000, scan->name); + } + return value; +} + +#if 0 +static void sifdebug_dump_regs(struct saa7134_dev *dev) +{ + print_regb(AUDIO_STATUS); + print_regb(IDENT_SIF); + print_regb(LEVEL_READOUT1); + print_regb(LEVEL_READOUT2); + print_regb(DCXO_IDENT_CTRL); + print_regb(DEMODULATOR); + print_regb(AGC_GAIN_SELECT); + print_regb(MONITOR_SELECT); + print_regb(FM_DEEMPHASIS); + print_regb(FM_DEMATRIX); + print_regb(SIF_SAMPLE_FREQ); + print_regb(ANALOG_IO_SELECT); +} +#endif + +static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio) +{ + __u32 idp,nicam; + 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_NICAM_STATUS); + dprintk("getstereo: nicam=0x%x\n",nicam); + switch (nicam & 0x0b) { + case 0x09: + retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; + break; + case 0x0a: + retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; + break; + case 0x08: + default: + retval = V4L2_TUNER_SUB_MONO; + break; + } + 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", + }; + 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 */ + }; + u32 reg; + + switch (audio->mode) { + case TVAUDIO_FM_MONO: + /* nothing to do ... */ + break; + case TVAUDIO_FM_K_STEREO: + case TVAUDIO_FM_BG_STEREO: + 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: + case TVAUDIO_NICAM_AM: + case TVAUDIO_NICAM_FM: + /* FIXME */ + 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; + + daemonize("%s", dev->name); + allow_signal(SIGTERM); + for (;;) { + tvaudio_sleep(dev,-1); + if (dev->thread.shutdown || signal_pending(current)) + goto done; + + restart: + dev->thread.scan1 = dev->thread.scan2; + dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1); + dev->tvaudio = NULL; + tvaudio_init(dev); + 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 ;) */ + 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; + + } else if (0 != dev->last_carrier) { + /* no carrier -- try last detected one as fallback */ + carrier = dev->last_carrier; + printk(KERN_WARNING "%s/audio: audio carrier scan failed, " + "using %d.%03d MHz [last detected]\n", + dev->name, carrier/1000, carrier%1000); + + } else { + /* no carrier + no fallback -- use default */ + carrier = default_carrier; + printk(KERN_WARNING "%s/audio: audio carrier scan failed, " + "using %d.%03d MHz [default]\n", + dev->name, carrier/1000, carrier%1000); + } + tvaudio_setcarrier(dev,carrier,carrier); + dev->automute = 0; + 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; + + 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 (;;) { + if (tvaudio_sleep(dev,5000)) + goto restart; + if (dev->thread.shutdown || signal_pending(current)) + break; + if (UNSET == dev->thread.mode) { + rx = tvaudio_getstereo(dev,&tvaudio[i]); + mode = saa7134_tvaudio_rx2mode(rx); + } else { + mode = dev->thread.mode; + } + if (lastmode != mode) { + tvaudio_setstereo(dev,&tvaudio[audio],mode); + lastmode = mode; + } + } + } + + done: + complete_and_exit(&dev->thread.exit, 0); + 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 + +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("%s: dsp access error\n",dev->name); + /* FIXME: send ack ... */ + 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; +} + +#if 0 +static int saa_dsp_readl(struct saa7134_dev *dev, int reg, u32 *value) +{ + int err; + + d2printk("dsp read reg 0x%x\n", reg<<2); + saa_readl(reg); + err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_RDB); + if (err < 0) + return err; + *value = saa_readl(reg); + d2printk("dsp read => 0x%06x\n", *value & 0xffffff); + err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_IDA); + if (err < 0) + return err; + return 0; +} +#endif + +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; + int mask; + + switch (dev->input->amux) { + case TV: + reg = 0x02; + break; + case LINE1: + reg = 0x00; + break; + case LINE2: + case LINE2_LEFT: + reg = 0x01; + break; + } + if (dev->ctl_mute) + reg = 0x07; + saa_writel(0x594 >> 2, reg); + + /* switch gpio-connected external audio mux */ + if (0 != card(dev).gpiomask) { + mask = card(dev).gpiomask; + saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask); + saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, dev->input->gpio); + saa7134_track_gpio(dev,dev->input->name); + } + return 0; +} + +static int tvaudio_thread_ddep(void *data) +{ + struct saa7134_dev *dev = data; + u32 value, norms, clock; + + daemonize("%s", dev->name); + allow_signal(SIGTERM); + + clock = saa7134_boards[dev->board].audio_clock; + if (UNSET != audio_clock_override) + clock = audio_clock_override; + saa_writel(0x598 >> 2, clock); + + /* unmute */ + saa_dsp_writel(dev, 0x474 >> 2, 0x00); + saa_dsp_writel(dev, 0x450 >> 2, 0x00); + + for (;;) { + tvaudio_sleep(dev,-1); + if (dev->thread.shutdown || signal_pending(current)) + goto done; + + restart: + 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"); + norms = (0x0f << 2) | 0x01; + } else { + /* (let chip) scan for sound carrier */ + norms = 0; + if (dev->tvnorm->id & V4L2_STD_PAL) { + dprintk("PAL scan\n"); + norms |= 0x2c; /* B/G + D/K + I */ + } + if (dev->tvnorm->id & V4L2_STD_NTSC) { + dprintk("NTSC scan\n"); + norms |= 0x40; /* M */ + } + if (dev->tvnorm->id & V4L2_STD_SECAM) { + dprintk("SECAM scan\n"); + norms |= 0x18; /* L + D/K */ + } + 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: + complete_and_exit(&dev->thread.exit, 0); + return 0; +} + +/* ------------------------------------------------------------------ */ +/* common stuff + external entry points */ + +static void saa7134_enable_i2s(struct saa7134_dev *dev) +{ + int i2s_format; + + if (!card_is_empress(dev)) + return; + 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); +} + +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; +} + +int saa7134_tvaudio_init2(struct saa7134_dev *dev) +{ + DECLARE_MUTEX_LOCKED(sem); + 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.pid = -1; + if (my_thread) { + /* start tvaudio thread */ + init_waitqueue_head(&dev->thread.wq); + init_completion(&dev->thread.exit); + dev->thread.pid = kernel_thread(my_thread,dev,0); + if (dev->thread.pid < 0) + printk(KERN_WARNING "%s: kernel_thread() failed\n", + dev->name); + saa7134_tvaudio_do_scan(dev); + } + + saa7134_enable_i2s(dev); + return 0; +} + +int saa7134_tvaudio_fini(struct saa7134_dev *dev) +{ + /* shutdown tvaudio thread */ + if (dev->thread.pid >= 0) { + dev->thread.shutdown = 1; + wake_up_interruptible(&dev->thread.wq); + wait_for_completion(&dev->thread.exit); + } + saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */ + return 0; +} + +int saa7134_tvaudio_do_scan(struct saa7134_dev *dev) +{ + if (dev->thread.pid >= 0) { + dev->thread.mode = UNSET; + dev->thread.scan2++; + wake_up_interruptible(&dev->thread.wq); + } else { + dev->automute = 0; + saa7134_tvaudio_setmute(dev); + } + return 0; +} + +/* ----------------------------------------------------------- */ +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ |