/* * $Id: tuner-core.c,v 1.40 2005/07/01 20:13:29 mchehab Exp $ * * i2c tv tuner chip device driver * core core, i.e. kernel interfaces, registering and so on */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "compat.h" /* * comment line bellow to return to old behavor, where only one I2C device is supported */ #define UNSET (-1U) /* standard i2c insmod options */ static unsigned short normal_i2c[] = { 0x4b, /* tda8290 */ 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, I2C_CLIENT_END }; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13) static unsigned short normal_i2c_range[] = { I2C_CLIENT_END }; #endif I2C_CLIENT_INSMOD; /* insmod options used at init time => read/only */ static unsigned int addr = 0; module_param(addr, int, 0444); /* insmod options used at runtime => read/write */ unsigned int tuner_debug = 0; module_param(tuner_debug, int, 0644); static unsigned int tv_range[2] = { 44, 958 }; static unsigned int radio_range[2] = { 65, 108 }; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10) static unsigned int dummy; module_param_array(tv_range, int, dummy, 0644); module_param_array(radio_range, int, dummy, 0644); #else module_param_array(tv_range, int, NULL, 0644); module_param_array(radio_range, int, NULL, 0644); #endif MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners"); MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer"); MODULE_LICENSE("GPL"); static struct i2c_driver driver; static struct i2c_client client_template; /* ---------------------------------------------------------------------- */ /* Set tuner frequency, freq in Units of 62.5kHz = 1/16MHz */ static void set_tv_freq(struct i2c_client *c, unsigned int freq) { struct tuner *t = i2c_get_clientdata(c); if (t->type == UNSET) { tuner_info("tuner type not set\n"); return; } if (NULL == t->tv_freq) { tuner_info("Huh? tv_set is NULL?\n"); return; } if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) { tuner_info("TV freq (%d.%02d) out of range (%d-%d)\n", freq / 16, freq % 16 * 100 / 16, tv_range[0], tv_range[1]); } t->tv_freq(c, freq); } static void set_radio_freq(struct i2c_client *c, unsigned int freq) { struct tuner *t = i2c_get_clientdata(c); if (t->type == UNSET) { tuner_info("tuner type not set\n"); return; } if (NULL == t->radio_freq) { tuner_info("no radio tuning for this one, sorry.\n"); return; } if (freq >= radio_range[0] * 16000 && freq <= radio_range[1] * 16000) { if (tuner_debug) tuner_info("radio freq step 62.5Hz (%d.%06d)\n", freq / 16000, freq % 16000 * 1000 / 16); t->radio_freq(c, freq); } else { tuner_info("radio freq (%d.%02d) out of range (%d-%d)\n", freq / 16000, freq % 16000 * 100 / 16000, radio_range[0], radio_range[1]); } return; } static void set_freq(struct i2c_client *c, unsigned long freq) { struct tuner *t = i2c_get_clientdata(c); switch (t->mode) { case V4L2_TUNER_RADIO: tuner_dbg("radio freq set to %lu.%02lu\n", freq / 16000, freq % 16000 * 100 / 16000); set_radio_freq(c, freq); break; case V4L2_TUNER_ANALOG_TV: case V4L2_TUNER_DIGITAL_TV: tuner_dbg("tv freq set to %lu.%02lu\n", freq / 16, freq % 16 * 100 / 16); set_tv_freq(c, freq); break; } t->freq = freq; } static void set_type(struct i2c_client *c, unsigned int type, enum tuner_admin_state new_admin_status) { struct tuner *t = i2c_get_clientdata(c); unsigned int i; unsigned char buffer[4]; /* sanity check */ if (type == UNSET || type == TUNER_ABSENT) { printk("tuner 0x%02x: Tuner type absent\n",c->addr); return; } if (type >= tuner_count) { printk("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count); return; } /* This code prevents against I2C early announces */ if (NULL == t->i2c.dev.driver) { printk("tuner 0x%02x: I2C driver not registred yet!\n",c->addr); for (i=0;(i<5)&&(NULL == t->i2c.dev.driver);i++) { msleep(1); /* Giver 1 ms for I2C */ } if (NULL == t->i2c.dev.driver) { printk("tuner 0x%02x: I2C driver still not registred. Giving up!\n",c->addr); t->type=type; /* not registered yet */ return; } tuner_info("tuner 0x%02x: Workaround worked\n",c->addr); } /* if ((t->admin_status==T_UNINITIALIZED) && (t->type == type)) return; */ tuner_dbg("set tuner type to %d\n",type); t->type = type; switch (t->type) { case TUNER_MT2032: microtune_init(c); break; case TUNER_PHILIPS_TDA8290: tda8290_init(c); break; case TUNER_TEA5767: if (tea5767_tuner_init(c) == EINVAL) { tuner_dbg("tuner is not a tea5767!\n"); t->type = TUNER_ABSENT; t->admin_status = T_UNINITIALIZED; return; } t->admin_status = T_RADIO; break; case TUNER_PHILIPS_FMD1216ME_MK3: buffer[0] = 0x0b; buffer[1] = 0xdc; buffer[2] = 0x9c; buffer[3] = 0x60; i2c_master_send(c, buffer, 4); mdelay(1); buffer[2] = 0x86; buffer[3] = 0x54; i2c_master_send(c, buffer, 4); default_tuner_init(c); break; default: default_tuner_init(c); break; } if (t->admin_status == T_UNINITIALIZED) t->admin_status = new_admin_status; tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n", c->adapter->name, c->driver->name, c->addr << 1, type, t->admin_status); } static void set_addr(struct i2c_client *c, struct tuner_addr *tun_addr) { struct tuner *t = i2c_get_clientdata(c); enum tuner_admin_state new_admin_status; /* ADDR_UNSET defaults to first available tuner */ if (tun_addr->addr == ADDR_UNSET) { /* If no Address specifyed, accepts only if tuner is */ if (!(t->admin_status & tun_addr->v4l2_tuner)) return; set_type(c, tun_addr->type, tun_addr->v4l2_tuner); } else { new_admin_status = tun_addr->v4l2_tuner; /* Sets tuner to its configured value */ if (tun_addr->addr == c->addr) set_type(c, tun_addr->type, new_admin_status); } } static inline int check_mode(struct tuner *t, char *cmd) { if (1 << t->mode & t->admin_status) { if (tuner_debug) { switch (t->mode) { case V4L2_TUNER_RADIO: tuner_dbg("Cmd %s accepted for radio\n", cmd); break; case V4L2_TUNER_ANALOG_TV: tuner_dbg("Cmd %s accepted for analog TV\n", cmd); break; case V4L2_TUNER_DIGITAL_TV: tuner_dbg("Cmd %s accepted for digital TV\n", cmd); break; } } return 0; } return EINVAL; } static char pal[] = "-"; module_param_string(pal, pal, sizeof(pal), 0644); static char secam[] = "-"; module_param_string(secam, secam, sizeof(secam), 0644); /* get more precise norm info from insmod option */ static int tuner_fixup_std(struct tuner *t) { if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) { switch (pal[0]) { case 'b': case 'B': case 'g': case 'G': tuner_dbg ("insmod fixup: PAL => PAL-BG\n"); t->std = V4L2_STD_PAL_BG; break; case 'i': case 'I': tuner_dbg ("insmod fixup: PAL => PAL-I\n"); t->std = V4L2_STD_PAL_I; break; case 'd': case 'D': case 'k': case 'K': tuner_dbg ("insmod fixup: PAL => PAL-DK\n"); t->std = V4L2_STD_PAL_DK; break; case 'M': case 'm': tuner_dbg ("insmod fixup: PAL => PAL-M\n"); t->std = V4L2_STD_PAL_M; break; case 'N': case 'n': tuner_dbg ("insmod fixup: PAL => PAL-N\n"); t->std = V4L2_STD_PAL_N; break; } } if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) { switch (secam[0]) { case 'd': case 'D': case 'k': case 'K': tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n"); t->std = V4L2_STD_SECAM_DK; break; case 'l': case 'L': tuner_dbg ("insmod fixup: SECAM => SECAM-L\n"); t->std = V4L2_STD_SECAM_L; break; } } return 0; } /* ---------------------------------------------------------------------- */ /* static var Used only in tuner_attach and tuner_probe */ static unsigned default_admin_status; static int tuner_attach(struct i2c_adapter *adap, int addr, int kind) { struct tuner *t; client_template.adapter = adap; client_template.addr = addr; t = kmalloc(sizeof(struct tuner), GFP_KERNEL); if (NULL == t) return -ENOMEM; memset(t, 0, sizeof(struct tuner)); memcpy(&t->i2c, &client_template, sizeof(struct i2c_client)); i2c_set_clientdata(&t->i2c, t); t->type = UNSET; t->radio_if2 = 10700 * 1000; /* 10.7MHz - FM radio */ t->audmode = V4L2_TUNER_MODE_STEREO; t->admin_status = T_UNINITIALIZED; tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name); /* TEA5767 autodetection code - only for addr = 0xc0 */ if (addr == 0x60) { if (tea5767_autodetection(&t->i2c)!=EINVAL) { t->type = TUNER_TEA5767; t->admin_status = T_RADIO|T_STANDBY; default_admin_status &= ~T_RADIO; /* Should be just before return */ i2c_attach_client(&t->i2c); return 0; } } /* Initializes only the first adapter found */ if (default_admin_status != T_UNINITIALIZED) { tuner_dbg("admin to card = 0x%02x\n", default_admin_status); t->admin_status = default_admin_status; default_admin_status = T_UNINITIALIZED; } /* Should be just before return */ i2c_attach_client(&t->i2c); return 0; } static int tuner_probe(struct i2c_adapter *adap) { if (0 != addr) { normal_i2c[0] = addr; normal_i2c[1] = I2C_CLIENT_END; } default_admin_status = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV; if (adap->class & I2C_CLASS_TV_ANALOG) return i2c_probe(adap, &addr_data, tuner_attach); return 0; } static int tuner_detach(struct i2c_client *client) { struct tuner *t = i2c_get_clientdata(client); int err; err = i2c_detach_client(&t->i2c); if (err) { tuner_warn ("Client deregistration failed, client not detached.\n"); return err; } kfree(t); return 0; } static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd) { int freq; if (mode != t->mode) { t->mode = mode; /* If TV/Radio tuners are separate, put the other tuner in standby mode*/ if (check_mode(t, cmd) == EINVAL) { t->admin_status |= T_STANDBY; if (V4L2_TUNER_RADIO == mode) { freq=400 * 16; /* Why 400 MHz? */ set_tv_freq(client, freq); } else { freq=87.5 * 16000; /* Is it the better value? */ set_radio_freq(client, freq); } return EINVAL; } else { /* Disables standby mode */ t->admin_status &= ~T_STANDBY; set_freq (client, t->freq); } } return 0; } #define switch_v4l2() if (!t->using_v4l2 && tuner_debug) \ tuner_info("switching to v4l2\n"); \ t->using_v4l2 = 1; static inline int check_v4l2(struct tuner *t) { if (t->using_v4l2) { if (tuner_debug) tuner_info("ignore v4l1 call\n"); return EINVAL; } return 0; } static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg) { struct tuner *t = i2c_get_clientdata(client); unsigned int *iarg = (int *)arg; switch (cmd) { /* --- configuration --- */ case TUNER_SET_TYPE: if (tuner_debug) tuner_dbg("Calling set_type for type=%d\n",*iarg); set_type(client, *iarg, T_RADIO | T_ANALOG_TV | T_DIGITAL_TV); break; case TUNER_SET_TYPE_ADDR: if (tuner_debug) tuner_dbg("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n", ((struct tuner_addr *)arg)->type, ((struct tuner_addr *)arg)->addr, ((struct tuner_addr *)arg)->v4l2_tuner); set_addr(client, (struct tuner_addr *)arg); break; case AUDC_SET_RADIO: set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO"); break; case AUDC_CONFIG_PINNACLE: if (check_mode(t, "AUDC_CONFIG_PINNACLE") == EINVAL) return 0; switch (*iarg) { case 2: tuner_dbg("pinnacle pal\n"); t->radio_if2 = 33300 * 1000; break; case 3: tuner_dbg("pinnacle ntsc\n"); t->radio_if2 = 41300 * 1000; break; } break; /* --- v4l ioctls --- */ /* take care: bttv does userspace copying, we'll get a kernel pointer here... */ case VIDIOCSCHAN: { static const v4l2_std_id map[] = { [VIDEO_MODE_PAL] = V4L2_STD_PAL, [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M, [VIDEO_MODE_SECAM] = V4L2_STD_SECAM, [4 /* bttv */ ] = V4L2_STD_PAL_M, [5 /* bttv */ ] = V4L2_STD_PAL_N, [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP, }; struct video_channel *vc = arg; if (check_v4l2(t) == EINVAL) return 0; if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL) return 0; if (vc->norm < ARRAY_SIZE(map)) t->std = map[vc->norm]; tuner_fixup_std(t); if (t->freq) set_tv_freq(client, t->freq); return 0; } case VIDIOCSFREQ: { unsigned long *v = arg; if (check_mode(t, "VIDIOCSFREQ") == EINVAL) return 0; if (check_v4l2(t) == EINVAL) return 0; set_freq(client, *v); return 0; } case VIDIOCGTUNER: { struct video_tuner *vt = arg; if (check_mode(t, "VIDIOCGTUNER") == EINVAL) return 0; if (check_v4l2(t) == EINVAL) return 0; if (V4L2_TUNER_RADIO == t->mode) { if (t->has_signal) vt->signal = t->has_signal(client); if (t->is_stereo) { if (t->is_stereo(client)) vt->flags |= VIDEO_TUNER_STEREO_ON; else vt->flags &= ~VIDEO_TUNER_STEREO_ON; } vt->flags |= V4L2_TUNER_CAP_LOW; /* Allow freqs at 62.5 Hz */ vt->rangelow = radio_range[0] * 16000; vt->rangehigh = radio_range[1] * 16000; } else { vt->rangelow = tv_range[0] * 16; vt->rangehigh = tv_range[1] * 16; } return 0; } case VIDIOCGAUDIO: { struct video_audio *va = arg; if (check_mode(t, "VIDIOCGAUDIO") == EINVAL) return 0; if (check_v4l2(t) == EINVAL) return 0; if (V4L2_TUNER_RADIO == t->mode && t->is_stereo) va->mode = t->is_stereo(client) ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO; return 0; } case VIDIOC_S_STD: { v4l2_std_id *id = arg; if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")==EINVAL) return 0; switch_v4l2(); t->std = *id; tuner_fixup_std(t); if (t->freq) set_freq(client, t->freq); break; } case VIDIOC_S_FREQUENCY: { struct v4l2_frequency *f = arg; t->freq = f->frequency; switch_v4l2(); if (V4L2_TUNER_RADIO == f->type && V4L2_TUNER_RADIO != t->mode) { if (set_mode(client,t,f->type,"VIDIOC_S_FREQUENCY") == EINVAL) return 0; } set_freq(client,t->freq); break; } case VIDIOC_G_FREQUENCY: { struct v4l2_frequency *f = arg; if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL) return 0; switch_v4l2(); f->type = t->mode; f->frequency = t->freq; break; } case VIDIOC_G_TUNER: { struct v4l2_tuner *tuner = arg; if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL) return 0; switch_v4l2(); if (V4L2_TUNER_RADIO == t->mode) { if (t->has_signal) tuner->signal = t->has_signal(client); if (t->is_stereo) { if (t->is_stereo(client)) { tuner->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO; } else { tuner->rxsubchans = V4L2_TUNER_SUB_MONO; } } tuner->capability |= V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; tuner->audmode = t->audmode; tuner->rangelow = radio_range[0] * 16000; tuner->rangehigh = radio_range[1] * 16000; } else { tuner->rangelow = tv_range[0] * 16; tuner->rangehigh = tv_range[1] * 16; } break; } case VIDIOC_S_TUNER: /* Allow changing radio range and audio mode */ { struct v4l2_tuner *tuner = arg; if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL) return 0; switch_v4l2(); /* To switch the audio mode, applications initialize the index and audmode fields and the reserved array and call the VIDIOC_S_TUNER ioctl. */ /* rxsubchannels: V4L2_TUNER_MODE_MONO, V4L2_TUNER_MODE_STEREO, V4L2_TUNER_MODE_LANG1, V4L2_TUNER_MODE_LANG2, V4L2_TUNER_MODE_SAP */ if (V4L2_TUNER_RADIO == t->mode) { if (tuner->audmode == V4L2_TUNER_MODE_MONO) t->audmode = V4L2_TUNER_MODE_MONO; else t->audmode = V4L2_TUNER_MODE_STEREO; set_radio_freq(client, t->freq); } break; } case TDA9887_SET_CONFIG: /* Nothing to do on tuner-core */ break; default: tuner_dbg("Unimplemented IOCTL 0x%08x called to tuner.\n", cmd); /* nothing */ break; } return 0; } static int tuner_suspend(struct device *dev, u32 state, u32 level) { struct i2c_client *c = container_of(dev, struct i2c_client, dev); struct tuner *t = i2c_get_clientdata(c); tuner_dbg("suspend\n"); /* FIXME: power down ??? */ return 0; } static int tuner_resume(struct device *dev, u32 level) { struct i2c_client *c = container_of(dev, struct i2c_client, dev); struct tuner *t = i2c_get_clientdata(c); tuner_dbg("resume\n"); if (t->freq) set_freq(c, t->freq); return 0; } /* ----------------------------------------------------------------------- */ static struct i2c_driver driver = { .owner = THIS_MODULE, .name = "tuner", .id = I2C_DRIVERID_TUNER, .flags = I2C_DF_NOTIFY, .attach_adapter = tuner_probe, .detach_client = tuner_detach, .command = tuner_command, .driver = { .suspend = tuner_suspend, .resume = tuner_resume, }, }; static struct i2c_client client_template = { I2C_DEVNAME("(tuner unset)"), .flags = I2C_CLIENT_ALLOW_USE, .driver = &driver, }; static int __init tuner_init_module(void) { return i2c_add_driver(&driver); } static void __exit tuner_cleanup_module(void) { i2c_del_driver(&driver); } module_init(tuner_init_module); module_exit(tuner_cleanup_module); /* * Overrides for Emacs so that we follow Linus's tabbing style. * --------------------------------------------------------------------------- * Local variables: * c-basic-offset: 8 * End: */