/*
- *
* 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>
#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)
+
+#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 */
+/* This macro allows us to probe dynamically, avoiding static links */
#ifdef CONFIG_MEDIA_ATTACH
#define tuner_symbol_probe(FUNCTION, ARGS...) ({ \
int __r = -EINVAL; \
}
#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)
.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))
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;
}
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;
+ /* discard private data, in case set_type() was previously called */
+ tuner_detach(&t->fe);
+ t->fe.analog_demod_priv = NULL;
switch (t->type) {
case TUNER_MT2032:
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;
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.
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,
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;
}
-/* get more precise norm info from insmod option */
+/*
+ * 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;
+}
+
+/*
+ * 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':
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;
/* default parameter, do nothing */
break;
default:
- tuner_warn ("pal= argument not recognised\n");
+ tuner_warn("pal= argument not recognised\n");
break;
}
}
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;
/* default parameter, do nothing */
break;
default:
- tuner_warn ("secam= argument not recognised\n");
+ tuner_warn("secam= argument not recognised\n");
break;
}
}
break;
}
}
- return 0;
+ 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;
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;
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;
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;
}
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;
}
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;
}
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);
}
/* 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;
(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;
}
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;
}
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;
}
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;
}
return -ENOIOCTLCMD;
}
-/* ----------------------------------------------------------------------- */
+/*
+ * Callback structs
+ */
static const struct v4l2_subdev_core_ops tuner_core_ops = {
.log_status = tuner_log_status,
.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 */
{ }
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");
git.openpandora.org / pandora-kernel.git / blobdiff