/* * * i2c tv tuner chip device driver * controls all those simple 4-control-bytes style tuners. */ #include #include #include #include static int offset = 0; module_param(offset, int, 0666); MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner"); /* ---------------------------------------------------------------------- */ /* tv standard selection for Temic 4046 FM5 this value takes the low bits of control byte 2 from datasheet Rev.01, Feb.00 standard BG I L L2 D picture IF 38.9 38.9 38.9 33.95 38.9 sound 1 33.4 32.9 32.4 40.45 32.4 sound 2 33.16 NICAM 33.05 32.348 33.05 33.05 */ #define TEMIC_SET_PAL_I 0x05 #define TEMIC_SET_PAL_DK 0x09 #define TEMIC_SET_PAL_L 0x0a // SECAM ? #define TEMIC_SET_PAL_L2 0x0b // change IF ! #define TEMIC_SET_PAL_BG 0x0c /* tv tuner system standard selection for Philips FQ1216ME this value takes the low bits of control byte 2 from datasheet "1999 Nov 16" (supersedes "1999 Mar 23") standard BG DK I L L` picture carrier 38.90 38.90 38.90 38.90 33.95 colour 34.47 34.47 34.47 34.47 38.38 sound 1 33.40 32.40 32.90 32.40 40.45 sound 2 33.16 - - - - NICAM 33.05 33.05 32.35 33.05 39.80 */ #define PHILIPS_SET_PAL_I 0x01 /* Bit 2 always zero !*/ #define PHILIPS_SET_PAL_BGDK 0x09 #define PHILIPS_SET_PAL_L2 0x0a #define PHILIPS_SET_PAL_L 0x0b /* system switching for Philips FI1216MF MK2 from datasheet "1996 Jul 09", standard BG L L' picture carrier 38.90 38.90 33.95 colour 34.47 34.37 38.38 sound 1 33.40 32.40 40.45 sound 2 33.16 - - NICAM 33.05 33.05 39.80 */ #define PHILIPS_MF_SET_BG 0x01 /* Bit 2 must be zero, Bit 3 is system output */ #define PHILIPS_MF_SET_PAL_L 0x03 // France #define PHILIPS_MF_SET_PAL_L2 0x02 // L' /* Control byte */ #define TUNER_RATIO_MASK 0x06 /* Bit cb1:cb2 */ #define TUNER_RATIO_SELECT_50 0x00 #define TUNER_RATIO_SELECT_32 0x02 #define TUNER_RATIO_SELECT_166 0x04 #define TUNER_RATIO_SELECT_62 0x06 #define TUNER_CHARGE_PUMP 0x40 /* Bit cb6 */ /* Status byte */ #define TUNER_POR 0x80 #define TUNER_FL 0x40 #define TUNER_MODE 0x38 #define TUNER_AFC 0x07 #define TUNER_SIGNAL 0x07 #define TUNER_STEREO 0x10 #define TUNER_PLL_LOCKED 0x40 #define TUNER_STEREO_MK3 0x04 #define TUNER_PARAM_ANALOG 0 /* to be removed */ /* FIXME: * Right now, all tuners are using the first tuner_params[] array element * for analog mode. In the future, we will be merging similar tuner * definitions together, such that each tuner definition will have a * tuner_params struct for each available video standard. At that point, * TUNER_PARAM_ANALOG will be removed, and the tuner_params[] array * element will be chosen based on the video standard in use. * */ /* ---------------------------------------------------------------------- */ static int tuner_getstatus(struct i2c_client *c) { unsigned char byte; if (1 != i2c_master_recv(c,&byte,1)) return 0; return byte; } static int tuner_signal(struct i2c_client *c) { return (tuner_getstatus(c) & TUNER_SIGNAL) << 13; } static int tuner_stereo(struct i2c_client *c) { int stereo, status; struct tuner *t = i2c_get_clientdata(c); status = tuner_getstatus (c); switch (t->type) { case TUNER_PHILIPS_FM1216ME_MK3: case TUNER_PHILIPS_FM1236_MK3: case TUNER_PHILIPS_FM1256_IH3: stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3); break; default: stereo = status & TUNER_STEREO; } return stereo; } /* ---------------------------------------------------------------------- */ static void default_set_tv_freq(struct i2c_client *c, unsigned int freq) { struct tuner *t = i2c_get_clientdata(c); u8 config, cb, tuneraddr; u16 div; struct tunertype *tun; u8 buffer[4]; int rc, IFPCoff, i, j; tun = &tuners[t->type]; j = TUNER_PARAM_ANALOG; /* IFPCoff = Video Intermediate Frequency - Vif: 940 =16*58.75 NTSC/J (Japan) 732 =16*45.75 M/N STD 704 =16*44 ATSC (at DVB code) 632 =16*39.50 I U.K. 622.4=16*38.90 B/G D/K I, L STD 592 =16*37.00 D China 590 =16.36.875 B Australia 543.2=16*33.95 L' STD 171.2=16*10.70 FM Radio (at set_radio_freq) */ if (t->std == V4L2_STD_NTSC_M_JP) { IFPCoff = 940; } else if ((t->std & V4L2_STD_MN) && !(t->std & ~V4L2_STD_MN)) { IFPCoff = 732; } else if (t->std == V4L2_STD_SECAM_LC) { IFPCoff = 543; } else { IFPCoff = 623; } for (i = 0; i < tun->params[j].count; i++) { if (freq > tun->params[j].ranges[i].limit) continue; break; } if (i == tun->params[j].count) { tuner_dbg("TV frequency out of range (%d > %d)", freq, tun->params[j].ranges[i - 1].limit); freq = tun->params[j].ranges[--i].limit; } config = tun->params[j].ranges[i].config; cb = tun->params[j].ranges[i].cb; /* i == 0 -> VHF_LO * i == 1 -> VHF_HI * i == 2 -> UHF */ tuner_dbg("tv: range %d\n",i); div=freq + IFPCoff + offset; tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n", freq / 16, freq % 16 * 100 / 16, IFPCoff / 16, IFPCoff % 16 * 100 / 16, offset / 16, offset % 16 * 100 / 16, div); /* tv norm specific stuff for multi-norm tuners */ switch (t->type) { case TUNER_PHILIPS_SECAM: // FI1216MF /* 0x01 -> ??? no change ??? */ /* 0x02 -> PAL BDGHI / SECAM L */ /* 0x04 -> ??? PAL others / SECAM others ??? */ cb &= ~0x02; if (t->std & V4L2_STD_SECAM) cb |= 0x02; break; case TUNER_TEMIC_4046FM5: cb &= ~0x0f; if (t->std & V4L2_STD_PAL_BG) { cb |= TEMIC_SET_PAL_BG; } else if (t->std & V4L2_STD_PAL_I) { cb |= TEMIC_SET_PAL_I; } else if (t->std & V4L2_STD_PAL_DK) { cb |= TEMIC_SET_PAL_DK; } else if (t->std & V4L2_STD_SECAM_L) { cb |= TEMIC_SET_PAL_L; } break; case TUNER_PHILIPS_FQ1216ME: cb &= ~0x0f; if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) { cb |= PHILIPS_SET_PAL_BGDK; } else if (t->std & V4L2_STD_PAL_I) { cb |= PHILIPS_SET_PAL_I; } else if (t->std & V4L2_STD_SECAM_L) { cb |= PHILIPS_SET_PAL_L; } break; case TUNER_PHILIPS_ATSC: /* 0x00 -> ATSC antenna input 1 */ /* 0x01 -> ATSC antenna input 2 */ /* 0x02 -> NTSC antenna input 1 */ /* 0x03 -> NTSC antenna input 2 */ cb &= ~0x03; if (!(t->std & V4L2_STD_ATSC)) cb |= 2; /* FIXME: input */ break; case TUNER_MICROTUNE_4042FI5: /* Set the charge pump for fast tuning */ config |= TUNER_CHARGE_PUMP; break; case TUNER_PHILIPS_TUV1236D: /* 0x40 -> ATSC antenna input 1 */ /* 0x48 -> ATSC antenna input 2 */ /* 0x00 -> NTSC antenna input 1 */ /* 0x08 -> NTSC antenna input 2 */ buffer[0] = 0x14; buffer[1] = 0x00; buffer[2] = 0x17; buffer[3] = 0x00; cb &= ~0x40; if (t->std & V4L2_STD_ATSC) { cb |= 0x40; buffer[1] = 0x04; } /* set to the correct mode (analog or digital) */ tuneraddr = c->addr; c->addr = 0x0a; if (2 != (rc = i2c_master_send(c,&buffer[0],2))) tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc); if (2 != (rc = i2c_master_send(c,&buffer[2],2))) tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc); c->addr = tuneraddr; /* FIXME: input */ break; } if (tuners[t->type].params->cb_first_if_lower_freq && div < t->last_div) { buffer[0] = config; buffer[1] = cb; buffer[2] = (div>>8) & 0x7f; buffer[3] = div & 0xff; } else { buffer[0] = (div>>8) & 0x7f; buffer[1] = div & 0xff; buffer[2] = config; buffer[3] = cb; } t->last_div = div; tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n", buffer[0],buffer[1],buffer[2],buffer[3]); if (4 != (rc = i2c_master_send(c,buffer,4))) tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc); if (t->type == TUNER_MICROTUNE_4042FI5) { // FIXME - this may also work for other tuners unsigned long timeout = jiffies + msecs_to_jiffies(1); u8 status_byte = 0; /* Wait until the PLL locks */ for (;;) { if (time_after(jiffies,timeout)) return; if (1 != (rc = i2c_master_recv(c,&status_byte,1))) { tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc); break; } if (status_byte & TUNER_PLL_LOCKED) break; udelay(10); } /* Set the charge pump for optimized phase noise figure */ config &= ~TUNER_CHARGE_PUMP; buffer[0] = (div>>8) & 0x7f; buffer[1] = div & 0xff; buffer[2] = config; buffer[3] = cb; tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n", buffer[0],buffer[1],buffer[2],buffer[3]); if (4 != (rc = i2c_master_send(c,buffer,4))) tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc); } } static void default_set_radio_freq(struct i2c_client *c, unsigned int freq) { struct tunertype *tun; struct tuner *t = i2c_get_clientdata(c); u8 buffer[4]; u16 div; int rc, j; tun = &tuners[t->type]; j = TUNER_PARAM_ANALOG; div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */ buffer[2] = (tun->params[j].ranges[0].config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */ switch (t->type) { case TUNER_TENA_9533_DI: case TUNER_YMEC_TVF_5533MF: tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n"); return; case TUNER_PHILIPS_FM1216ME_MK3: case TUNER_PHILIPS_FM1236_MK3: case TUNER_PHILIPS_FMD1216ME_MK3: buffer[3] = 0x19; break; case TUNER_PHILIPS_FM1256_IH3: div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */ buffer[3] = 0x19; break; case TUNER_LG_PAL_FM: buffer[3] = 0xa5; break; case TUNER_MICROTUNE_4049FM5: div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */ buffer[3] = 0xa4; break; default: buffer[3] = 0xa4; break; } buffer[0] = (div>>8) & 0x7f; buffer[1] = div & 0xff; if (tuners[t->type].params->cb_first_if_lower_freq && div < t->last_div) { buffer[0] = buffer[2]; buffer[1] = buffer[3]; buffer[2] = (div>>8) & 0x7f; buffer[3] = div & 0xff; } else { buffer[0] = (div>>8) & 0x7f; buffer[1] = div & 0xff; } tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n", buffer[0],buffer[1],buffer[2],buffer[3]); t->last_div = div; if (4 != (rc = i2c_master_send(c,buffer,4))) tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc); } int default_tuner_init(struct i2c_client *c) { struct tuner *t = i2c_get_clientdata(c); tuner_info("type set to %d (%s)\n", t->type, tuners[t->type].name); strlcpy(c->name, tuners[t->type].name, sizeof(c->name)); t->set_tv_freq = default_set_tv_freq; t->set_radio_freq = default_set_radio_freq; t->has_signal = tuner_signal; t->is_stereo = tuner_stereo; t->standby = NULL; return 0; } /* * Overrides for Emacs so that we follow Linus's tabbing style. * --------------------------------------------------------------------------- * Local variables: * c-basic-offset: 8 * End: */