diff options
Diffstat (limited to 'drivers/media/video/tuner-core.c')
| -rw-r--r-- | drivers/media/video/tuner-core.c | 1205 |
1 files changed, 653 insertions, 552 deletions
diff --git a/drivers/media/video/tuner-core.c b/drivers/media/video/tuner-core.c index 1cec1224913f..9363ed91a4cb 100644 --- a/drivers/media/video/tuner-core.c +++ b/drivers/media/video/tuner-core.c @@ -1,7 +1,17 @@ /* - * * i2c tv tuner chip device driver * core core, i.e. kernel interfaces, registering and so on + * + * Copyright(c) by Ralph Metzler, Gerd Knorr, Gunther Mayer + * + * Copyright(c) 2005-2011 by Mauro Carvalho Chehab + * - Added support for a separate Radio tuner + * - Major rework and cleanups at the code + * + * This driver supports many devices and the idea is to let the driver + * detect which device is present. So rather than listing all supported + * devices here, we pretend to support a single, fake device type that will + * handle both radio and analog TV tuning. */ #include <linux/module.h> @@ -32,9 +42,111 @@ #define UNSET (-1U) -#define PREFIX t->i2c->driver->driver.name +#define PREFIX (t->i2c->driver->driver.name) + +/* + * Driver modprobe parameters + */ + +/* insmod options used at init time => read/only */ +static unsigned int addr; +static unsigned int no_autodetect; +static unsigned int show_i2c; + +module_param(addr, int, 0444); +module_param(no_autodetect, int, 0444); +module_param(show_i2c, int, 0444); + +/* insmod options used at runtime => read/write */ +static int tuner_debug; +static unsigned int tv_range[2] = { 44, 958 }; +static unsigned int radio_range[2] = { 65, 108 }; +static char pal[] = "--"; +static char secam[] = "--"; +static char ntsc[] = "-"; + +module_param_named(debug, tuner_debug, int, 0644); +module_param_array(tv_range, int, NULL, 0644); +module_param_array(radio_range, int, NULL, 0644); +module_param_string(pal, pal, sizeof(pal), 0644); +module_param_string(secam, secam, sizeof(secam), 0644); +module_param_string(ntsc, ntsc, sizeof(ntsc), 0644); + +/* + * Static vars + */ + +static LIST_HEAD(tuner_list); +static const struct v4l2_subdev_ops tuner_ops; + +/* + * Debug macros + */ + +#define tuner_warn(fmt, arg...) do { \ + printk(KERN_WARNING "%s %d-%04x: " fmt, PREFIX, \ + i2c_adapter_id(t->i2c->adapter), \ + t->i2c->addr, ##arg); \ + } while (0) + +#define tuner_info(fmt, arg...) do { \ + printk(KERN_INFO "%s %d-%04x: " fmt, PREFIX, \ + i2c_adapter_id(t->i2c->adapter), \ + t->i2c->addr, ##arg); \ + } while (0) + +#define tuner_err(fmt, arg...) do { \ + printk(KERN_ERR "%s %d-%04x: " fmt, PREFIX, \ + i2c_adapter_id(t->i2c->adapter), \ + t->i2c->addr, ##arg); \ + } while (0) -/** This macro allows us to probe dynamically, avoiding static links */ +#define tuner_dbg(fmt, arg...) do { \ + if (tuner_debug) \ + printk(KERN_DEBUG "%s %d-%04x: " fmt, PREFIX, \ + i2c_adapter_id(t->i2c->adapter), \ + t->i2c->addr, ##arg); \ + } while (0) + +/* + * Internal struct used inside the driver + */ + +struct tuner { + /* device */ + struct dvb_frontend fe; + struct i2c_client *i2c; + struct v4l2_subdev sd; + struct list_head list; + + /* keep track of the current settings */ + v4l2_std_id std; + unsigned int tv_freq; + unsigned int radio_freq; + unsigned int audmode; + + enum v4l2_tuner_type mode; + unsigned int mode_mask; /* Combination of allowable modes */ + + bool standby; /* Standby mode */ + + unsigned int type; /* chip type id */ + unsigned int config; + const char *name; +}; + +/* + * Function prototypes + */ + +static void set_tv_freq(struct i2c_client *c, unsigned int freq); +static void set_radio_freq(struct i2c_client *c, unsigned int freq); + +/* + * tuner attach/detach logic + */ + +/* This macro allows us to probe dynamically, avoiding static links */ #ifdef CONFIG_MEDIA_ATTACH #define tuner_symbol_probe(FUNCTION, ARGS...) ({ \ int __r = -EINVAL; \ @@ -74,92 +186,15 @@ static void tuner_detach(struct dvb_frontend *fe) } #endif -struct tuner { - /* device */ - struct dvb_frontend fe; - struct i2c_client *i2c; - struct v4l2_subdev sd; - struct list_head list; - unsigned int using_v4l2:1; - - /* keep track of the current settings */ - v4l2_std_id std; - unsigned int tv_freq; - unsigned int radio_freq; - unsigned int audmode; - - unsigned int mode; - unsigned int mode_mask; /* Combination of allowable modes */ - - unsigned int type; /* chip type id */ - unsigned int config; - const char *name; -}; static inline struct tuner *to_tuner(struct v4l2_subdev *sd) { return container_of(sd, struct tuner, sd); } - -/* insmod options used at init time => read/only */ -static unsigned int addr; -static unsigned int no_autodetect; -static unsigned int show_i2c; - -/* insmod options used at runtime => read/write */ -static int tuner_debug; - -#define tuner_warn(fmt, arg...) do { \ - printk(KERN_WARNING "%s %d-%04x: " fmt, PREFIX, \ - i2c_adapter_id(t->i2c->adapter), \ - t->i2c->addr, ##arg); \ - } while (0) - -#define tuner_info(fmt, arg...) do { \ - printk(KERN_INFO "%s %d-%04x: " fmt, PREFIX, \ - i2c_adapter_id(t->i2c->adapter), \ - t->i2c->addr, ##arg); \ - } while (0) - -#define tuner_err(fmt, arg...) do { \ - printk(KERN_ERR "%s %d-%04x: " fmt, PREFIX, \ - i2c_adapter_id(t->i2c->adapter), \ - t->i2c->addr, ##arg); \ - } while (0) - -#define tuner_dbg(fmt, arg...) do { \ - if (tuner_debug) \ - printk(KERN_DEBUG "%s %d-%04x: " fmt, PREFIX, \ - i2c_adapter_id(t->i2c->adapter), \ - t->i2c->addr, ##arg); \ - } while (0) - -/* ------------------------------------------------------------------------ */ - -static unsigned int tv_range[2] = { 44, 958 }; -static unsigned int radio_range[2] = { 65, 108 }; - -static char pal[] = "--"; -static char secam[] = "--"; -static char ntsc[] = "-"; - - -module_param(addr, int, 0444); -module_param(no_autodetect, int, 0444); -module_param(show_i2c, int, 0444); -module_param_named(debug,tuner_debug, int, 0644); -module_param_string(pal, pal, sizeof(pal), 0644); -module_param_string(secam, secam, sizeof(secam), 0644); -module_param_string(ntsc, ntsc, sizeof(ntsc), 0644); -module_param_array(tv_range, int, NULL, 0644); -module_param_array(radio_range, int, NULL, 0644); - -MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners"); -MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer"); -MODULE_LICENSE("GPL"); - -/* ---------------------------------------------------------------------- */ +/* + * struct analog_demod_ops callbacks + */ static void fe_set_params(struct dvb_frontend *fe, struct analog_parameters *params) @@ -215,102 +250,25 @@ static struct analog_demod_ops tuner_analog_ops = { .tuner_status = tuner_status }; -/* 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 = to_tuner(i2c_get_clientdata(c)); - struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; - - struct analog_parameters params = { - .mode = t->mode, - .audmode = t->audmode, - .std = t->std - }; - - if (t->type == UNSET) { - tuner_warn ("tuner type not set\n"); - return; - } - if (NULL == analog_ops->set_params) { - tuner_warn ("Tuner has no way to set tv freq\n"); - return; - } - if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) { - tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n", - freq / 16, freq % 16 * 100 / 16, tv_range[0], - tv_range[1]); - /* V4L2 spec: if the freq is not possible then the closest - possible value should be selected */ - if (freq < tv_range[0] * 16) - freq = tv_range[0] * 16; - else - freq = tv_range[1] * 16; - } - params.frequency = freq; - - analog_ops->set_params(&t->fe, ¶ms); -} - -static void set_radio_freq(struct i2c_client *c, unsigned int freq) -{ - struct tuner *t = to_tuner(i2c_get_clientdata(c)); - struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; - - struct analog_parameters params = { - .mode = t->mode, - .audmode = t->audmode, - .std = t->std - }; - - if (t->type == UNSET) { - tuner_warn ("tuner type not set\n"); - return; - } - if (NULL == analog_ops->set_params) { - tuner_warn ("tuner has no way to set radio frequency\n"); - return; - } - if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) { - tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n", - freq / 16000, freq % 16000 * 100 / 16000, - radio_range[0], radio_range[1]); - /* V4L2 spec: if the freq is not possible then the closest - possible value should be selected */ - if (freq < radio_range[0] * 16000) - freq = radio_range[0] * 16000; - else - freq = radio_range[1] * 16000; - } - params.frequency = freq; - - analog_ops->set_params(&t->fe, ¶ms); -} - -static void set_freq(struct i2c_client *c, unsigned long freq) -{ - struct tuner *t = to_tuner(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); - t->radio_freq = 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); - t->tv_freq = freq; - break; - default: - tuner_dbg("freq set: unknown mode: 0x%04x!\n",t->mode); - } -} - -static struct xc5000_config xc5000_cfg; +/* + * Functions to select between radio and TV and tuner probe/remove functions + */ +/** + * set_type - Sets the tuner type for a given device + * + * @c: i2c_client descriptoy + * @type: type of the tuner (e. g. tuner number) + * @new_mode_mask: Indicates if tuner supports TV and/or Radio + * @new_config: an optional parameter ranging from 0-255 used by + a few tuners to adjust an internal parameter, + like LNA mode + * @tuner_callback: an optional function to be called when switching + * to analog mode + * + * This function applys the tuner config to tuner specified + * by tun_setup structure. It contains several per-tuner initialization "magic" + */ static void set_type(struct i2c_client *c, unsigned int type, unsigned int new_mode_mask, unsigned int new_config, int (*tuner_callback) (void *dev, int component, int cmd, int arg)) @@ -322,7 +280,7 @@ static void set_type(struct i2c_client *c, unsigned int type, int tune_now = 1; if (type == UNSET || type == TUNER_ABSENT) { - tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr); + tuner_dbg("tuner 0x%02x: Tuner type absent\n", c->addr); return; } @@ -334,12 +292,6 @@ static void set_type(struct i2c_client *c, unsigned int type, t->fe.callback = tuner_callback; } - if (t->mode == T_UNINITIALIZED) { - tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr); - - return; - } - /* discard private data, in case set_type() was previously called */ tuner_detach(&t->fe); t->fe.analog_demod_priv = NULL; @@ -414,9 +366,12 @@ static void set_type(struct i2c_client *c, unsigned int type, break; case TUNER_XC5000: { - xc5000_cfg.i2c_address = t->i2c->addr; - /* if_khz will be set when the digital dvb_attach() occurs */ - xc5000_cfg.if_khz = 0; + struct xc5000_config xc5000_cfg = { + .i2c_address = t->i2c->addr, + /* if_khz will be set at dvb_attach() */ + .if_khz = 0, + }; + if (!dvb_attach(xc5000_attach, &t->fe, t->i2c->adapter, &xc5000_cfg)) goto attach_failed; @@ -459,8 +414,7 @@ static void set_type(struct i2c_client *c, unsigned int type, tuner_dbg("type set to %s\n", t->name); - if (t->mode_mask == T_UNINITIALIZED) - t->mode_mask = new_mode_mask; + t->mode_mask = new_mode_mask; /* Some tuners require more initialization setup before use, such as firmware download or device calibration. @@ -468,9 +422,12 @@ static void set_type(struct i2c_client *c, unsigned int type, FIXME: better to move set_freq to the tuner code. This is needed on analog tuners for PLL to properly work */ - if (tune_now) - set_freq(c, (V4L2_TUNER_RADIO == t->mode) ? - t->radio_freq : t->tv_freq); + if (tune_now) { + if (V4L2_TUNER_RADIO == t->mode) + set_radio_freq(c, t->radio_freq); + else + set_tv_freq(c, t->tv_freq); + } tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n", c->adapter->name, c->driver->driver.name, c->addr << 1, type, @@ -480,86 +437,426 @@ static void set_type(struct i2c_client *c, unsigned int type, attach_failed: tuner_dbg("Tuner attach for type = %d failed.\n", t->type); t->type = TUNER_ABSENT; - t->mode_mask = T_UNINITIALIZED; return; } -/* - * This function apply tuner config to tuner specified - * by tun_setup structure. I addr is unset, then admin status - * and tun addr status is more precise then current status, - * it's applied. Otherwise status and type are applied only to - * tuner with exactly the same addr. -*/ - -static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup) +/** + * tuner_s_type_addr - Sets the tuner type for a device + * + * @sd: subdev descriptor + * @tun_setup: type to be associated to a given tuner i2c address + * + * This function applys the tuner config to tuner specified + * by tun_setup structure. + * If tuner I2C address is UNSET, then it will only set the device + * if the tuner supports the mode specified in the call. + * If the address is specified, the change will be applied only if + * tuner I2C address matches. + * The call can change the tuner number and the tuner mode. + */ +static int tuner_s_type_addr(struct v4l2_subdev *sd, + struct tuner_setup *tun_setup) { - struct tuner *t = to_tuner(i2c_get_clientdata(c)); + struct tuner *t = to_tuner(sd); + struct i2c_client *c = v4l2_get_subdevdata(sd); - if ( (t->type == UNSET && ((tun_setup->addr == ADDR_UNSET) && - (t->mode_mask & tun_setup->mode_mask))) || - (tun_setup->addr == c->addr)) { - set_type(c, tun_setup->type, tun_setup->mode_mask, - tun_setup->config, tun_setup->tuner_callback); + tuner_dbg("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x, config=0x%02x\n", + tun_setup->type, + tun_setup->addr, + tun_setup->mode_mask, + tun_setup->config); + + if ((t->type == UNSET && ((tun_setup->addr == ADDR_UNSET) && + (t->mode_mask & tun_setup->mode_mask))) || + (tun_setup->addr == c->addr)) { + set_type(c, tun_setup->type, tun_setup->mode_mask, + tun_setup->config, tun_setup->tuner_callback); } else tuner_dbg("set addr discarded for type %i, mask %x. " "Asked to change tuner at addr 0x%02x, with mask %x\n", t->type, t->mode_mask, tun_setup->addr, tun_setup->mode_mask); + + return 0; } -static inline int check_mode(struct tuner *t, char *cmd) +/** + * tuner_s_config - Sets tuner configuration + * + * @sd: subdev descriptor + * @cfg: tuner configuration + * + * Calls tuner set_config() private function to set some tuner-internal + * parameters + */ +static int tuner_s_config(struct v4l2_subdev *sd, + const struct v4l2_priv_tun_config *cfg) { - if ((1 << t->mode & t->mode_mask) == 0) { - return -EINVAL; + struct tuner *t = to_tuner(sd); + struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; + + if (t->type != cfg->tuner) + return 0; + + if (analog_ops->set_config) { + analog_ops->set_config(&t->fe, cfg->priv); + return 0; } - 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; + tuner_dbg("Tuner frontend module has no way to set config\n"); + return 0; +} + +/** + * tuner_lookup - Seek for tuner adapters + * + * @adap: i2c_adapter struct + * @radio: pointer to be filled if the adapter is radio + * @tv: pointer to be filled if the adapter is TV + * + * Search for existing radio and/or TV tuners on the given I2C adapter, + * discarding demod-only adapters (tda9887). + * + * Note that when this function is called from tuner_probe you can be + * certain no other devices will be added/deleted at the same time, I2C + * core protects against that. + */ +static void tuner_lookup(struct i2c_adapter *adap, + struct tuner **radio, struct tuner **tv) +{ + struct tuner *pos; + + *radio = NULL; + *tv = NULL; + + list_for_each_entry(pos, &tuner_list, list) { + int mode_mask; + + if (pos->i2c->adapter != adap || + strcmp(pos->i2c->driver->driver.name, "tuner")) + continue; + + mode_mask = pos->mode_mask; + if (*radio == NULL && mode_mask == T_RADIO) + *radio = pos; + /* Note: currently TDA9887 is the only demod-only + device. If other devices appear then we need to + make this test more general. */ + else if (*tv == NULL && pos->type != TUNER_TDA9887 && + (pos->mode_mask & T_ANALOG_TV)) + *tv = pos; + } +} + +/** + *tuner_probe - Probes the existing tuners on an I2C bus + * + * @client: i2c_client descriptor + * @id: not used + * + * This routine probes for tuners at the expected I2C addresses. On most + * cases, if a device answers to a given I2C address, it assumes that the + * device is a tuner. On a few cases, however, an additional logic is needed + * to double check if the device is really a tuner, or to identify the tuner + * type, like on tea5767/5761 devices. + * + * During client attach, set_type is called by adapter's attach_inform callback. + * set_type must then be completed by tuner_probe. + */ +static int tuner_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct tuner *t; + struct tuner *radio; + struct tuner *tv; + + t = kzalloc(sizeof(struct tuner), GFP_KERNEL); + if (NULL == t) + return -ENOMEM; + v4l2_i2c_subdev_init(&t->sd, client, &tuner_ops); + t->i2c = client; + t->name = "(tuner unset)"; + t->type = UNSET; + t->audmode = V4L2_TUNER_MODE_STEREO; + t->standby = 1; + t->radio_freq = 87.5 * 16000; /* Initial freq range */ + t->tv_freq = 400 * 16; /* Sets freq to VHF High - needed for some PLL's to properly start */ + + if (show_i2c) { + unsigned char buffer[16]; + int i, rc; + + memset(buffer, 0, sizeof(buffer)); + rc = i2c_master_recv(client, buffer, sizeof(buffer)); + tuner_info("I2C RECV = "); + for (i = 0; i < rc; i++) + printk(KERN_CONT "%02x ", buffer[i]); + printk("\n"); + } + + /* autodetection code based on the i2c addr */ + if (!no_autodetect) { + switch (client->addr) { + case 0x10: + if (tuner_symbol_probe(tea5761_autodetection, + t->i2c->adapter, + t->i2c->addr) >= 0) { + t->type = TUNER_TEA5761; + t->mode_mask = T_RADIO; + tuner_lookup(t->i2c->adapter, &radio, &tv); + if (tv) + tv->mode_mask &= ~T_RADIO; + + goto register_client; + } + kfree(t); + return -ENODEV; + case 0x42: + case 0x43: + case 0x4a: + case 0x4b: + /* If chip is not tda8290, don't register. + since it can be tda9887*/ + if (tuner_symbol_probe(tda829x_probe, t->i2c->adapter, + t->i2c->addr) >= 0) { + tuner_dbg("tda829x detected\n"); + } else { + /* Default is being tda9887 */ + t->type = TUNER_TDA9887; + t->mode_mask = T_RADIO | T_ANALOG_TV; + goto register_client; + } + break; + case 0x60: + if (tuner_symbol_probe(tea5767_autodetection, + t->i2c->adapter, t->i2c->addr) + >= 0) { + t->type = TUNER_TEA5767; + t->mode_mask = T_RADIO; + /* Sets freq to FM range */ + tuner_lookup(t->i2c->adapter, &radio, &tv); + if (tv) + tv->mode_mask &= ~T_RADIO; + + goto register_client; + } + break; + } + } + + /* Initializes only the first TV tuner on this adapter. Why only the + first? Because there are some devices (notably the ones with TI + tuners) that have more than one i2c address for the *same* device. + Experience shows that, except for just one case, the first + address is the right one. The exception is a Russian tuner + (ACORP_Y878F). So, the desired behavior is just to enable the + first found TV tuner. */ + tuner_lookup(t->i2c->adapter, &radio, &tv); + if (tv == NULL) { + t->mode_mask = T_ANALOG_TV; + if (radio == NULL) + t->mode_mask |= T_RADIO; + tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask); + } + + /* Should be just before return */ +register_client: + /* Sets a default mode */ + if (t->mode_mask & T_ANALOG_TV) + t->mode = V4L2_TUNER_ANALOG_TV; + else + t->mode = V4L2_TUNER_RADIO; + set_type(client, t->type, t->mode_mask, t->config, t->fe.callback); + list_add_tail(&t->list, &tuner_list); + + tuner_info("Tuner %d found with type(s)%s%s.\n", + t->type, + t->mode_mask & T_RADIO ? " Radio" : "", + t->mode_mask & T_ANALOG_TV ? " TV" : ""); + return 0; +} + +/** + * tuner_remove - detaches a tuner + * + * @client: i2c_client descriptor + */ + +static int tuner_remove(struct i2c_client *client) +{ + struct tuner *t = to_tuner(i2c_get_clientdata(client)); + + v4l2_device_unregister_subdev(&t->sd); + tuner_detach(&t->fe); + t->fe.analog_demod_priv = NULL; + + list_del(&t->list); + kfree(t); + return 0; +} + +/* + * Functions to switch between Radio and TV + * + * A few cards have a separate I2C tuner for radio. Those routines + * take care of switching between TV/Radio mode, filtering only the + * commands that apply to the Radio or TV tuner. + */ + +/** + * check_mode - Verify if tuner supports the requested mode + * @t: a pointer to the module's internal struct_tuner + * + * This function checks if the tuner is capable of tuning analog TV, + * digital TV or radio, depending on what the caller wants. If the + * tuner can't support that mode, it returns -EINVAL. Otherwise, it + * returns 0. + * This function is needed for boards that have a separate tuner for + * radio (like devices with tea5767). + */ +static inline int check_mode(struct tuner *t, enum v4l2_tuner_type mode) +{ + if ((1 << mode & t->mode_mask) == 0) + return -EINVAL; + + return 0; +} + +/** + * set_mode_freq - Switch tuner to other mode. + * @client: struct i2c_client pointer + * @t: a pointer to the module's internal struct_tuner + * @mode: enum v4l2_type (radio or TV) + * @freq: frequency to set (0 means to use the previous one) + * + * If tuner doesn't support the needed mode (radio or TV), prints a + * debug message and returns -EINVAL, changing its state to standby. + * Otherwise, changes the state and sets frequency to the last value, if + * the tuner can sleep or if it supports both Radio and TV. + */ +static int set_mode_freq(struct i2c_client *client, struct tuner *t, + enum v4l2_tuner_type mode, unsigned int freq) +{ + struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; + + if (mode != t->mode) { + if (check_mode(t, mode) == -EINVAL) { + tuner_dbg("Tuner doesn't support mode %d. " + "Putting tuner to sleep\n", mode); + t->standby = true; + if (analog_ops->standby) + analog_ops->standby(&t->fe); + return -EINVAL; + } + t->mode = mode; + tuner_dbg("Changing to mode %d\n", mode); } + if (t->mode == V4L2_TUNER_RADIO) { + if (freq) + t->radio_freq = freq; + set_radio_freq(client, t->radio_freq); + } else { + if (freq) + t->tv_freq = freq; + set_tv_freq(client, t->tv_freq); + } + return 0; } -/* get more precise norm info from insmod option */ +/* + * Functions that are specific for TV mode + */ + +/** + * set_tv_freq - Set tuner frequency, freq in Units of 62.5 kHz = 1/16MHz + * + * @c: i2c_client descriptor + * @freq: frequency + */ +static void set_tv_freq(struct i2c_client *c, unsigned int freq) +{ + struct tuner *t = to_tuner(i2c_get_clientdata(c)); + struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; + + struct analog_parameters params = { + .mode = t->mode, + .audmode = t->audmode, + .std = t->std + }; + + if (t->type == UNSET) { + tuner_warn("tuner type not set\n"); + return; + } + if (NULL == analog_ops->set_params) { + tuner_warn("Tuner has no way to set tv freq\n"); + return; + } + if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) { + tuner_dbg("TV freq (%d.%02d) out of range (%d-%d)\n", + freq / 16, freq % 16 * 100 / 16, tv_range[0], + tv_range[1]); + /* V4L2 spec: if the freq is not possible then the closest + possible value should be selected */ + if (freq < tv_range[0] * 16) + freq = tv_range[0] * 16; + else + freq = tv_range[1] * 16; + } + params.frequency = freq; + tuner_dbg("tv freq set to %d.%02d\n", + freq / 16, freq % 16 * 100 / 16); + t->tv_freq = freq; + t->standby = false; + + analog_ops->set_params(&t->fe, ¶ms); +} + +/** + * tuner_fixup_std - force a given video standard variant + * + * @t: tuner internal struct + * + * A few devices or drivers have problem to detect some standard variations. + * On other operational systems, the drivers generally have a per-country + * code, and some logic to apply per-country hacks. V4L2 API doesn't provide + * such hacks. Instead, it relies on a proper video standard selection from + * the userspace application. However, as some apps are buggy, not allowing + * to distinguish all video standard variations, a modprobe parameter can + * be used to force a video standard match. + */ static int tuner_fixup_std(struct tuner *t) { if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) { switch (pal[0]) { case '6': - tuner_dbg ("insmod fixup: PAL => PAL-60\n"); + tuner_dbg("insmod fixup: PAL => PAL-60\n"); t->std = V4L2_STD_PAL_60; break; case 'b': case 'B': case 'g': case 'G': - tuner_dbg ("insmod fixup: PAL => PAL-BG\n"); + 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"); + 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"); + 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"); + tuner_dbg("insmod fixup: PAL => PAL-M\n"); t->std = V4L2_STD_PAL_M; break; case 'N': @@ -568,7 +865,7 @@ static int tuner_fixup_std(struct tuner *t) tuner_dbg("insmod fixup: PAL => PAL-Nc\n"); t->std = V4L2_STD_PAL_Nc; } else { - tuner_dbg ("insmod fixup: PAL => PAL-N\n"); + tuner_dbg("insmod fixup: PAL => PAL-N\n"); t->std = V4L2_STD_PAL_N; } break; @@ -576,7 +873,7 @@ static int tuner_fixup_std(struct tuner *t) /* default parameter, do nothing */ break; default: - tuner_warn ("pal= argument not recognised\n"); + tuner_warn("pal= argument not recognised\n"); break; } } @@ -589,22 +886,24 @@ static int tuner_fixup_std(struct tuner *t) case 'h': case 'H': tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n"); - t->std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H; + t->std = V4L2_STD_SECAM_B | + V4L2_STD_SECAM_G | + V4L2_STD_SECAM_H; break; case 'd': case 'D': case 'k': case 'K': - tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n"); + tuner_dbg("insmod fixup: SECAM => SECAM-DK\n"); t->std = V4L2_STD_SECAM_DK; break; case 'l': case 'L': - if ((secam[1]=='C')||(secam[1]=='c')) { - tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n"); + if ((secam[1] == 'C') || (secam[1] == 'c')) { + tuner_dbg("insmod fixup: SECAM => SECAM-L'\n"); t->std = V4L2_STD_SECAM_LC; } else { - tuner_dbg ("insmod fixup: SECAM => SECAM-L\n"); + tuner_dbg("insmod fixup: SECAM => SECAM-L\n"); t->std = V4L2_STD_SECAM_L; } break; @@ -612,7 +911,7 @@ static int tuner_fixup_std(struct tuner *t) /* default parameter, do nothing */ break; default: - tuner_warn ("secam= argument not recognised\n"); + tuner_warn("secam= argument not recognised\n"); break; } } @@ -645,6 +944,66 @@ static int tuner_fixup_std(struct tuner *t) return 0; } +/* + * Functions that are specific for Radio mode + */ + +/** + * set_radio_freq - Set tuner frequency, freq in Units of 62.5 Hz = 1/16kHz + * + * @c: i2c_client descriptor + * @freq: frequency + */ +static void set_radio_freq(struct i2c_client *c, unsigned int freq) +{ + struct tuner *t = to_tuner(i2c_get_clientdata(c)); + struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; + + struct analog_parameters params = { + .mode = t->mode, + .audmode = t->audmode, + .std = t->std + }; + + if (t->type == UNSET) { + tuner_warn("tuner type not set\n"); + return; + } + if (NULL == analog_ops->set_params) { + tuner_warn("tuner has no way to set radio frequency\n"); + return; + } + if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) { + tuner_dbg("radio freq (%d.%02d) out of range (%d-%d)\n", + freq / 16000, freq % 16000 * 100 / 16000, + radio_range[0], radio_range[1]); + /* V4L2 spec: if the freq is not possible then the closest + possible value should be selected */ + if (freq < radio_range[0] * 16000) + freq = radio_range[0] * 16000; + else + freq = radio_range[1] * 16000; + } + params.frequency = freq; + tuner_dbg("radio freq set to %d.%02d\n", + freq / 16000, freq % 16000 * 100 / 16000); + t->radio_freq = freq; + t->standby = false; + + analog_ops->set_params(&t->fe, ¶ms); +} + +/* + * Debug function for reporting tuner status to userspace + */ + +/** + * tuner_status - Dumps the current tuner status at dmesg + * @fe: pointer to struct dvb_frontend + * + * This callback is used only for driver debug purposes, answering to + * VIDIOC_LOG_STATUS. No changes should happen on this call. + */ static void tuner_status(struct dvb_frontend *fe) { struct tuner *t = fe->analog_demod_priv; @@ -654,10 +1013,16 @@ static void tuner_status(struct dvb_frontend *fe) const char *p; switch (t->mode) { - case V4L2_TUNER_RADIO: p = "radio"; break; - case V4L2_TUNER_ANALOG_TV: p = "analog TV"; break; - case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break; - default: p = "undefined"; break; + case V4L2_TUNER_RADIO: + p = "radio"; + break; + case V4L2_TUNER_DIGITAL_TV: + p = "digital TV"; + break; + case V4L2_TUNER_ANALOG_TV: + default: + p = "analog TV"; + break; } if (t->mode == V4L2_TUNER_RADIO) { freq = t->radio_freq / 16000; @@ -666,11 +1031,12 @@ static void tuner_status(struct dvb_frontend *fe) freq = t->tv_freq / 16; freq_fraction = (t->tv_freq % 16) * 100 / 16; } - tuner_info("Tuner mode: %s\n", p); + tuner_info("Tuner mode: %s%s\n", p, + t->standby ? " on standby mode" : ""); tuner_info("Frequency: %lu.%02lu MHz\n", freq, freq_fraction); tuner_info("Standard: 0x%08lx\n", (unsigned long)t->std); if (t->mode != V4L2_TUNER_RADIO) - return; + return; if (fe_tuner_ops->get_status) { u32 tuner_status; @@ -683,132 +1049,58 @@ static void tuner_status(struct dvb_frontend *fe) if (analog_ops->has_signal) tuner_info("Signal strength: %d\n", analog_ops->has_signal(fe)); - if (analog_ops->is_stereo) - tuner_info("Stereo: %s\n", - analog_ops->is_stereo(fe) ? "yes" : "no"); } -/* ---------------------------------------------------------------------- */ - /* - * Switch tuner to other mode. If tuner support both tv and radio, - * set another frequency to some value (This is needed for some pal - * tuners to avoid locking). Otherwise, just put second tuner in - * standby mode. + * Function to splicitly change mode to radio. Probably not needed anymore */ -static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd) -{ - struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; - - if (mode == t->mode) - return 0; - - t->mode = mode; - - if (check_mode(t, cmd) == -EINVAL) { - tuner_dbg("Tuner doesn't support this mode. " - "Putting tuner to sleep\n"); - t->mode = T_STANDBY; - if (analog_ops->standby) - analog_ops->standby(&t->fe); - return -EINVAL; - } - return 0; -} - -#define switch_v4l2() if (!t->using_v4l2) \ - tuner_dbg("switching to v4l2\n"); \ - t->using_v4l2 = 1; - -static inline int check_v4l2(struct tuner *t) -{ - /* bttv still uses both v4l1 and v4l2 calls to the tuner (v4l2 for - TV, v4l1 for radio), until that is fixed this code is disabled. - Otherwise the radio (v4l1) wouldn't tune after using the TV (v4l2) - first. */ - return 0; -} - -static int tuner_s_type_addr(struct v4l2_subdev *sd, struct tuner_setup *type) -{ - struct tuner *t = to_tuner(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - - tuner_dbg("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x, config=0x%02x\n", - type->type, - type->addr, - type->mode_mask, - type->config); - - set_addr(client, type); - return 0; -} - static int tuner_s_radio(struct v4l2_subdev *sd) { struct tuner *t = to_tuner(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); - if (set_mode(client, t, V4L2_TUNER_RADIO, "s_radio") == -EINVAL) + if (set_mode_freq(client, t, V4L2_TUNER_RADIO, 0) == -EINVAL) return 0; - if (t->radio_freq) - set_freq(client, t->radio_freq); return 0; } +/* + * Tuner callbacks to handle userspace ioctl's + */ + +/** + * tuner_s_power - controls the power state of the tuner + * @sd: pointer to struct v4l2_subdev + * @on: a zero value puts the tuner to sleep + */ static int tuner_s_power(struct v4l2_subdev *sd, int on) { struct tuner *t = to_tuner(sd); struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; + /* FIXME: Why this function don't wake the tuner if on != 0 ? */ if (on) return 0; tuner_dbg("Putting tuner to sleep\n"); - - if (check_mode(t, "s_power") == -EINVAL) - return 0; - t->mode = T_STANDBY; + t->standby = true; if (analog_ops->standby) analog_ops->standby(&t->fe); return 0; } -static int tuner_s_config(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *cfg) -{ - struct tuner *t = to_tuner(sd); - struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; - - if (t->type != cfg->tuner) - return 0; - - if (analog_ops->set_config) { - analog_ops->set_config(&t->fe, cfg->priv); - return 0; - } - - tuner_dbg("Tuner frontend module has no way to set config\n"); - return 0; -} - -/* --- v4l ioctls --- */ -/* take care: bttv does userspace copying, we'll get a - kernel pointer here... */ static int tuner_s_std(struct v4l2_subdev *sd, v4l2_std_id std) { struct tuner *t = to_tuner(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); - if (set_mode(client, t, V4L2_TUNER_ANALOG_TV, "s_std") == -EINVAL) + if (set_mode_freq(client, t, V4L2_TUNER_ANALOG_TV, 0) == -EINVAL) return 0; - switch_v4l2(); - t->std = std; tuner_fixup_std(t); - if (t->tv_freq) - set_freq(client, t->tv_freq); + return 0; } @@ -817,10 +1109,8 @@ static int tuner_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) struct tuner *t = to_tuner(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); - if (set_mode(client, t, f->type, "s_frequency") == -EINVAL) + if (set_mode_freq(client, t, f->type, f->frequency) == -EINVAL) return 0; - switch_v4l2(); - set_freq(client, f->frequency); return 0; } @@ -830,21 +1120,20 @@ static int tuner_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) struct tuner *t = to_tuner(sd); struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops; - if (check_mode(t, "g_frequency") == -EINVAL) + if (check_mode(t, f->type) == -EINVAL) return 0; - switch_v4l2(); f->type = t->mode; - if (fe_tuner_ops->get_frequency) { + if (fe_tuner_ops->get_frequency && !t->standby) { u32 abs_freq; fe_tuner_ops->get_frequency(&t->fe, &abs_freq); f->frequency = (V4L2_TUNER_RADIO == t->mode) ? DIV_ROUND_CLOSEST(abs_freq * 2, 125) : DIV_ROUND_CLOSEST(abs_freq, 62500); - return 0; + } else { + f->frequency = (V4L2_TUNER_RADIO == t->mode) ? + t->radio_freq : t->tv_freq; } - f->frequency = (V4L2_TUNER_RADIO == t->mode) ? - t->radio_freq : t->tv_freq; return 0; } @@ -854,10 +1143,8 @@ static int tuner_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops; - if (check_mode(t, "g_tuner") == -EINVAL) + if (check_mode(t, vt->type) == -EINVAL) return 0; - switch_v4l2(); - vt->type = t->mode; if (analog_ops->get_afc) vt->afc = analog_ops->get_afc(&t->fe); @@ -870,8 +1157,7 @@ static int tuner_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) } /* radio mode */ - vt->rxsubchans = - V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; + vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; if (fe_tuner_ops->get_status) { u32 tuner_status; @@ -880,21 +1166,14 @@ static int tuner_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) (tuner_status & TUNER_STATUS_STEREO) ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO; - } else { - if (analog_ops->is_stereo) { - vt->rxsubchans = - analog_ops->is_stereo(&t->fe) ? - V4L2_TUNER_SUB_STEREO : - V4L2_TUNER_SUB_MONO; - } } if (analog_ops->has_signal) vt->signal = analog_ops->has_signal(&t->fe); - vt->capability |= - V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; + vt->capability |= V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; vt->audmode = t->audmode; vt->rangelow = radio_range[0] * 16000; vt->rangehigh = radio_range[1] * 16000; + return 0; } @@ -903,16 +1182,12 @@ static int tuner_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) struct tuner *t = to_tuner(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); - if (check_mode(t, "s_tuner") == -EINVAL) + if (set_mode_freq(client, t, vt->type, 0) == -EINVAL) return 0; - switch_v4l2(); + if (t->mode == V4L2_TUNER_RADIO) + t->audmode = vt->audmode; - /* do nothing unless we're a radio tuner */ - if (t->mode != V4L2_TUNER_RADIO) - return 0; - t->audmode = vt->audmode; - set_radio_freq(client, t->radio_freq); return 0; } @@ -929,9 +1204,13 @@ static int tuner_log_status(struct v4l2_subdev *sd) static int tuner_suspend(struct i2c_client *c, pm_message_t state) { struct tuner *t = to_tuner(i2c_get_clientdata(c)); + struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; tuner_dbg("suspend\n"); - /* FIXME: power down ??? */ + + if (!t->standby && analog_ops->standby) + analog_ops->standby(&t->fe); + return 0; } @@ -940,13 +1219,10 @@ static int tuner_resume(struct i2c_client *c) struct tuner *t = to_tuner(i2c_get_clientdata(c)); tuner_dbg("resume\n"); - if (V4L2_TUNER_RADIO == t->mode) { - if (t->radio_freq) - set_freq(c, t->radio_freq); - } else { - if (t->tv_freq) - set_freq(c, t->tv_freq); - } + + if (!t->standby) + set_mode_freq(c, t, t->type, 0); + return 0; } @@ -964,7 +1240,9 @@ static int tuner_command(struct i2c_client *client, unsigned cmd, void *arg) return -ENOIOCTLCMD; } -/* ----------------------------------------------------------------------- */ +/* + * Callback structs + */ static const struct v4l2_subdev_core_ops tuner_core_ops = { .log_status = tuner_log_status, @@ -987,183 +1265,10 @@ static const struct v4l2_subdev_ops tuner_ops = { .tuner = &tuner_tuner_ops, }; -/* ---------------------------------------------------------------------- */ - -static LIST_HEAD(tuner_list); - -/* Search for existing radio and/or TV tuners on the given I2C adapter. - Note that when this function is called from tuner_probe you can be - certain no other devices will be added/deleted at the same time, I2C - core protects against that. */ -static void tuner_lookup(struct i2c_adapter *adap, - struct tuner **radio, struct tuner **tv) -{ - struct tuner *pos; - - *radio = NULL; - *tv = NULL; - - list_for_each_entry(pos, &tuner_list, list) { - int mode_mask; - - if (pos->i2c->adapter != adap || - strcmp(pos->i2c->driver->driver.name, "tuner")) - continue; - - mode_mask = pos->mode_mask & ~T_STANDBY; - if (*radio == NULL && mode_mask == T_RADIO) - *radio = pos; - /* Note: currently TDA9887 is the only demod-only - device. If other devices appear then we need to - make this test more general. */ - else if (*tv == NULL && pos->type != TUNER_TDA9887 && - (pos->mode_mask & (T_ANALOG_TV | T_DIGITAL_TV))) - *tv = pos; - } -} - -/* During client attach, set_type is called by adapter's attach_inform callback. - set_type must then be completed by tuner_probe. +/* + * I2C structs and module init functions */ -static int tuner_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct tuner *t; - struct tuner *radio; - struct tuner *tv; - - t = kzalloc(sizeof(struct tuner), GFP_KERNEL); - if (NULL == t) - return -ENOMEM; - v4l2_i2c_subdev_init(&t->sd, client, &tuner_ops); - t->i2c = client; - t->name = "(tuner unset)"; - t->type = UNSET; - t->audmode = V4L2_TUNER_MODE_STEREO; - t->mode_mask = T_UNINITIALIZED; - - if (show_i2c) { - unsigned char buffer[16]; - int i, rc; - - memset(buffer, 0, sizeof(buffer)); - rc = i2c_master_recv(client, buffer, sizeof(buffer)); - tuner_info("I2C RECV = "); - for (i = 0; i < rc; i++) - printk(KERN_CONT "%02x ", buffer[i]); - printk("\n"); - } - /* autodetection code based on the i2c addr */ - if (!no_autodetect) { - switch (client->addr) { - case 0x10: - if (tuner_symbol_probe(tea5761_autodetection, - t->i2c->adapter, - t->i2c->addr) >= 0) { - t->type = TUNER_TEA5761; - t->mode_mask = T_RADIO; - t->mode = T_STANDBY; - /* Sets freq to FM range */ - t->radio_freq = 87.5 * 16000; - tuner_lookup(t->i2c->adapter, &radio, &tv); - if (tv) - tv->mode_mask &= ~T_RADIO; - - goto register_client; - } - kfree(t); - return -ENODEV; - case 0x42: - case 0x43: - case 0x4a: - case 0x4b: - /* If chip is not tda8290, don't register. - since it can be tda9887*/ - if (tuner_symbol_probe(tda829x_probe, t->i2c->adapter, - t->i2c->addr) >= 0) { - tuner_dbg("tda829x detected\n"); - } else { - /* Default is being tda9887 */ - t->type = TUNER_TDA9887; - t->mode_mask = T_RADIO | T_ANALOG_TV | - T_DIGITAL_TV; - t->mode = T_STANDBY; - goto register_client; - } - break; - case 0x60: - if (tuner_symbol_probe(tea5767_autodetection, - t->i2c->adapter, t->i2c->addr) - >= 0) { - t->type = TUNER_TEA5767; - t->mode_mask = T_RADIO; - t->mode = T_STANDBY; - /* Sets freq to FM range */ - t->radio_freq = 87.5 * 16000; - tuner_lookup(t->i2c->adapter, &radio, &tv); - if (tv) - tv->mode_mask &= ~T_RADIO; - - goto register_client; - } - break; - } - } - - /* Initializes only the first TV tuner on this adapter. Why only the - first? Because there are some devices (notably the ones with TI - tuners) that have more than one i2c address for the *same* device. - Experience shows that, except for just one case, the first - address is the right one. The exception is a Russian tuner - (ACORP_Y878F). So, the desired behavior is just to enable the - first found TV tuner. */ - tuner_lookup(t->i2c->adapter, &radio, &tv); - if (tv == NULL) { - t->mode_mask = T_ANALOG_TV | T_DIGITAL_TV; - if (radio == NULL) - t->mode_mask |= T_RADIO; - tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask); - t->tv_freq = 400 * 16; /* Sets freq to VHF High */ - t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */ - } - - /* Should be just before return */ -register_client: - tuner_info("chip found @ 0x%x (%s)\n", client->addr << 1, - client->adapter->name); - - /* Sets a default mode */ - if (t->mode_mask & T_ANALOG_TV) { - t->mode = V4L2_TUNER_ANALOG_TV; - } else if (t->mode_mask & T_RADIO) { - t->mode = V4L2_TUNER_RADIO; - } else { - t->mode = V4L2_TUNER_DIGITAL_TV; - } - set_type(client, t->type, t->mode_mask, t->config, t->fe.callback); - list_add_tail(&t->list, &tuner_list); - return 0; -} - -static int tuner_remove(struct i2c_client *client) -{ - struct tuner *t = to_tuner(i2c_get_clientdata(client)); - - v4l2_device_unregister_subdev(&t->sd); - tuner_detach(&t->fe); - t->fe.analog_demod_priv = NULL; - - list_del(&t->list); - kfree(t); - return 0; -} - -/* ----------------------------------------------------------------------- */ - -/* This driver supports many devices and the idea is to let the driver - detect which device is present. So rather than listing all supported - devices here, we pretend to support a single, fake device type. */ static const struct i2c_device_id tuner_id[] = { { "tuner", }, /* autodetect */ { } @@ -1196,10 +1301,6 @@ static __exit void exit_tuner(void) module_init(init_tuner); module_exit(exit_tuner); -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * --------------------------------------------------------------------------- - * Local variables: - * c-basic-offset: 8 - * End: - */ +MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners"); +MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer"); +MODULE_LICENSE("GPL"); |