forked from Minki/linux
V4L/DVB (6555): tuner: reorder functions to prepare for i2c conversion
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
159ffe77cd
commit
92de1f16d1
@ -585,221 +585,6 @@ static void tuner_status(struct dvb_frontend *fe)
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/* ---------------------------------------------------------------------- */
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LIST_HEAD(tuner_list);
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/* Search for existing radio and/or TV tuners on the given I2C adapter.
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Note that when this function is called from tuner_attach you can be
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certain no other devices will be added/deleted at the same time, I2C
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core protects against that. */
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static void tuner_lookup(struct i2c_adapter *adap,
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struct tuner **radio, struct tuner **tv)
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{
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struct tuner *pos;
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*radio = NULL;
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*tv = NULL;
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list_for_each_entry(pos, &tuner_list, list) {
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int mode_mask;
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if (pos->i2c->adapter != adap ||
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pos->i2c->driver->id != I2C_DRIVERID_TUNER)
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continue;
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mode_mask = pos->mode_mask & ~T_STANDBY;
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if (*radio == NULL && mode_mask == T_RADIO)
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*radio = pos;
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/* Note: currently TDA9887 is the only demod-only
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device. If other devices appear then we need to
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make this test more general. */
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else if (*tv == NULL && pos->type != TUNER_TDA9887 &&
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(pos->mode_mask & (T_ANALOG_TV | T_DIGITAL_TV)))
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*tv = pos;
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}
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}
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/* During client attach, set_type is called by adapter's attach_inform callback.
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set_type must then be completed by tuner_attach.
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*/
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static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
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{
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struct i2c_client *client;
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struct tuner *t;
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struct tuner *radio;
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struct tuner *tv;
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client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
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if (NULL == client)
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return -ENOMEM;
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t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
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if (NULL == t) {
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kfree(client);
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return -ENOMEM;
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}
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t->i2c = client;
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client_template.adapter = adap;
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client_template.addr = addr;
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memcpy(client, &client_template, sizeof(struct i2c_client));
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i2c_set_clientdata(client, t);
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t->type = UNSET;
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t->audmode = V4L2_TUNER_MODE_STEREO;
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t->mode_mask = T_UNINITIALIZED;
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if (show_i2c) {
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unsigned char buffer[16];
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int i,rc;
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memset(buffer, 0, sizeof(buffer));
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rc = i2c_master_recv(client, buffer, sizeof(buffer));
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tuner_info("I2C RECV = ");
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for (i=0;i<rc;i++)
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printk("%02x ",buffer[i]);
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printk("\n");
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}
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/* HACK: This test were added to avoid tuner to probe tda9840 and tea6415c on the MXB card */
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if (adap->id == I2C_HW_SAA7146 && addr < 0x4a)
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return -ENODEV;
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/* autodetection code based on the i2c addr */
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if (!no_autodetect) {
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switch (addr) {
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case 0x10:
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if (tea5761_autodetection(t->i2c->adapter, t->i2c->addr) != EINVAL) {
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t->type = TUNER_TEA5761;
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t->mode_mask = T_RADIO;
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t->mode = T_STANDBY;
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t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
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tuner_lookup(t->i2c->adapter, &radio, &tv);
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if (tv)
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tv->mode_mask &= ~T_RADIO;
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goto register_client;
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}
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break;
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case 0x42:
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case 0x43:
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case 0x4a:
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case 0x4b:
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/* If chip is not tda8290, don't register.
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since it can be tda9887*/
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if (tda829x_probe(t) == 0) {
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tuner_dbg("tda829x detected\n");
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} else {
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/* Default is being tda9887 */
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t->type = TUNER_TDA9887;
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t->mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
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t->mode = T_STANDBY;
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goto register_client;
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}
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break;
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case 0x60:
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if (tea5767_autodetection(t->i2c->adapter, t->i2c->addr) != EINVAL) {
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t->type = TUNER_TEA5767;
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t->mode_mask = T_RADIO;
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t->mode = T_STANDBY;
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t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
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tuner_lookup(t->i2c->adapter, &radio, &tv);
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if (tv)
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tv->mode_mask &= ~T_RADIO;
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goto register_client;
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}
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break;
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}
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}
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/* Initializes only the first TV tuner on this adapter. Why only the
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first? Because there are some devices (notably the ones with TI
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tuners) that have more than one i2c address for the *same* device.
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Experience shows that, except for just one case, the first
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address is the right one. The exception is a Russian tuner
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(ACORP_Y878F). So, the desired behavior is just to enable the
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first found TV tuner. */
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tuner_lookup(t->i2c->adapter, &radio, &tv);
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if (tv == NULL) {
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t->mode_mask = T_ANALOG_TV | T_DIGITAL_TV;
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if (radio == NULL)
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t->mode_mask |= T_RADIO;
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tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask);
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t->tv_freq = 400 * 16; /* Sets freq to VHF High */
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t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
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}
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/* Should be just before return */
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register_client:
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tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
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/* Sets a default mode */
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if (t->mode_mask & T_ANALOG_TV) {
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t->mode = T_ANALOG_TV;
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} else if (t->mode_mask & T_RADIO) {
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t->mode = T_RADIO;
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} else {
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t->mode = T_DIGITAL_TV;
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}
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i2c_attach_client (client);
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set_type (client,t->type, t->mode_mask, t->config, t->tuner_callback);
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return 0;
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}
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static int tuner_probe(struct i2c_adapter *adap)
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{
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if (0 != addr) {
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normal_i2c[0] = addr;
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normal_i2c[1] = I2C_CLIENT_END;
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}
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/* HACK: Ignore 0x6b and 0x6f on cx88 boards.
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* FusionHDTV5 RT Gold has an ir receiver at 0x6b
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* and an RTC at 0x6f which can get corrupted if probed.
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*/
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if ((adap->id == I2C_HW_B_CX2388x) ||
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(adap->id == I2C_HW_B_CX23885)) {
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unsigned int i = 0;
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while (i < I2C_CLIENT_MAX_OPTS && ignore[i] != I2C_CLIENT_END)
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i += 2;
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if (i + 4 < I2C_CLIENT_MAX_OPTS) {
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ignore[i+0] = adap->nr;
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ignore[i+1] = 0x6b;
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ignore[i+2] = adap->nr;
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ignore[i+3] = 0x6f;
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ignore[i+4] = I2C_CLIENT_END;
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} else
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printk(KERN_WARNING "tuner: "
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"too many options specified "
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"in i2c probe ignore list!\n");
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}
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if (adap->class & I2C_CLASS_TV_ANALOG)
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return i2c_probe(adap, &addr_data, tuner_attach);
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return 0;
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}
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static int tuner_detach(struct i2c_client *client)
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{
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struct tuner *t = i2c_get_clientdata(client);
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struct analog_tuner_ops *ops = t->fe.ops.analog_demod_ops;
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int err;
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err = i2c_detach_client(t->i2c);
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if (err) {
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tuner_warn
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("Client deregistration failed, client not detached.\n");
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return err;
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}
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if (ops && ops->release)
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ops->release(&t->fe);
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list_del(&t->list);
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kfree(t);
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kfree(client);
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return 0;
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}
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/*
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* Switch tuner to other mode. If tuner support both tv and radio,
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* set another frequency to some value (This is needed for some pal
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@ -1156,6 +941,229 @@ static int tuner_resume(struct i2c_client *c)
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return 0;
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}
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/* ---------------------------------------------------------------------- */
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LIST_HEAD(tuner_list);
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/* Search for existing radio and/or TV tuners on the given I2C adapter.
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Note that when this function is called from tuner_attach you can be
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certain no other devices will be added/deleted at the same time, I2C
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core protects against that. */
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static void tuner_lookup(struct i2c_adapter *adap,
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struct tuner **radio, struct tuner **tv)
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{
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struct tuner *pos;
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*radio = NULL;
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*tv = NULL;
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list_for_each_entry(pos, &tuner_list, list) {
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int mode_mask;
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if (pos->i2c->adapter != adap ||
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pos->i2c->driver->id != I2C_DRIVERID_TUNER)
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continue;
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mode_mask = pos->mode_mask & ~T_STANDBY;
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if (*radio == NULL && mode_mask == T_RADIO)
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*radio = pos;
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/* Note: currently TDA9887 is the only demod-only
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device. If other devices appear then we need to
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make this test more general. */
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else if (*tv == NULL && pos->type != TUNER_TDA9887 &&
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(pos->mode_mask & (T_ANALOG_TV | T_DIGITAL_TV)))
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*tv = pos;
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}
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}
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/* During client attach, set_type is called by adapter's attach_inform callback.
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set_type must then be completed by tuner_attach.
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*/
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static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
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{
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struct i2c_client *client;
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struct tuner *t;
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struct tuner *radio;
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struct tuner *tv;
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client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
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if (NULL == client)
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return -ENOMEM;
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t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
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if (NULL == t) {
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kfree(client);
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return -ENOMEM;
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}
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t->i2c = client;
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client_template.adapter = adap;
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client_template.addr = addr;
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memcpy(client, &client_template, sizeof(struct i2c_client));
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i2c_set_clientdata(client, t);
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t->type = UNSET;
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t->audmode = V4L2_TUNER_MODE_STEREO;
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t->mode_mask = T_UNINITIALIZED;
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if (show_i2c) {
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unsigned char buffer[16];
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int i, rc;
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memset(buffer, 0, sizeof(buffer));
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rc = i2c_master_recv(client, buffer, sizeof(buffer));
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tuner_info("I2C RECV = ");
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for (i = 0; i < rc; i++)
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printk(KERN_CONT "%02x ", buffer[i]);
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printk("\n");
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}
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/* HACK: This test were added to avoid tuner to probe tda9840 and
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tea6415c on the MXB card */
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if (adap->id == I2C_HW_SAA7146 && addr < 0x4a)
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return -ENODEV;
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/* autodetection code based on the i2c addr */
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if (!no_autodetect) {
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switch (addr) {
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case 0x10:
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if (tea5761_autodetection(t->i2c->adapter, t->i2c->addr)
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!= EINVAL) {
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t->type = TUNER_TEA5761;
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t->mode_mask = T_RADIO;
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t->mode = T_STANDBY;
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/* Sets freq to FM range */
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t->radio_freq = 87.5 * 16000;
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tuner_lookup(t->i2c->adapter, &radio, &tv);
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if (tv)
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tv->mode_mask &= ~T_RADIO;
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goto register_client;
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}
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break;
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case 0x42:
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case 0x43:
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case 0x4a:
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case 0x4b:
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/* If chip is not tda8290, don't register.
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since it can be tda9887*/
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if (tda829x_probe(t) == 0) {
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tuner_dbg("tda829x detected\n");
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} else {
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/* Default is being tda9887 */
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t->type = TUNER_TDA9887;
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t->mode_mask = T_RADIO | T_ANALOG_TV |
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T_DIGITAL_TV;
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t->mode = T_STANDBY;
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goto register_client;
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}
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break;
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case 0x60:
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if (tea5767_autodetection(t->i2c->adapter, t->i2c->addr)
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!= EINVAL) {
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t->type = TUNER_TEA5767;
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t->mode_mask = T_RADIO;
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t->mode = T_STANDBY;
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/* Sets freq to FM range */
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t->radio_freq = 87.5 * 16000;
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tuner_lookup(t->i2c->adapter, &radio, &tv);
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if (tv)
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tv->mode_mask &= ~T_RADIO;
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goto register_client;
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}
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break;
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}
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}
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/* Initializes only the first TV tuner on this adapter. Why only the
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first? Because there are some devices (notably the ones with TI
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tuners) that have more than one i2c address for the *same* device.
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Experience shows that, except for just one case, the first
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address is the right one. The exception is a Russian tuner
|
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(ACORP_Y878F). So, the desired behavior is just to enable the
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first found TV tuner. */
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tuner_lookup(t->i2c->adapter, &radio, &tv);
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if (tv == NULL) {
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t->mode_mask = T_ANALOG_TV | T_DIGITAL_TV;
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if (radio == NULL)
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t->mode_mask |= T_RADIO;
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tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask);
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t->tv_freq = 400 * 16; /* Sets freq to VHF High */
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t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
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}
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/* Should be just before return */
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register_client:
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tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
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/* Sets a default mode */
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if (t->mode_mask & T_ANALOG_TV) {
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t->mode = T_ANALOG_TV;
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} else if (t->mode_mask & T_RADIO) {
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t->mode = T_RADIO;
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} else {
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t->mode = T_DIGITAL_TV;
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}
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i2c_attach_client(client);
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set_type(client, t->type, t->mode_mask, t->config, t->tuner_callback);
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return 0;
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}
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static int tuner_probe(struct i2c_adapter *adap)
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{
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if (0 != addr) {
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normal_i2c[0] = addr;
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normal_i2c[1] = I2C_CLIENT_END;
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}
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/* HACK: Ignore 0x6b and 0x6f on cx88 boards.
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* FusionHDTV5 RT Gold has an ir receiver at 0x6b
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* and an RTC at 0x6f which can get corrupted if probed.
|
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*/
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if ((adap->id == I2C_HW_B_CX2388x) ||
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(adap->id == I2C_HW_B_CX23885)) {
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unsigned int i = 0;
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while (i < I2C_CLIENT_MAX_OPTS && ignore[i] != I2C_CLIENT_END)
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i += 2;
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if (i + 4 < I2C_CLIENT_MAX_OPTS) {
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ignore[i+0] = adap->nr;
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ignore[i+1] = 0x6b;
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ignore[i+2] = adap->nr;
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ignore[i+3] = 0x6f;
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ignore[i+4] = I2C_CLIENT_END;
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} else
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printk(KERN_WARNING "tuner: "
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"too many options specified "
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"in i2c probe ignore list!\n");
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}
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if (adap->class & I2C_CLASS_TV_ANALOG)
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return i2c_probe(adap, &addr_data, tuner_attach);
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return 0;
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}
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static int tuner_detach(struct i2c_client *client)
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{
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struct tuner *t = i2c_get_clientdata(client);
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struct analog_tuner_ops *ops = t->fe.ops.analog_demod_ops;
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int err;
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err = i2c_detach_client(t->i2c);
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if (err) {
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tuner_warn
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("Client deregistration failed, client not detached.\n");
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return err;
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}
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if (ops && ops->release)
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ops->release(&t->fe);
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list_del(&t->list);
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kfree(t);
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kfree(client);
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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|
||||
static struct i2c_driver driver = {
|
||||
|
||||
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Reference in New Issue
Block a user