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https://github.com/torvalds/linux
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[media] mn88473: convert driver to I2C binding
Driver was using DVB proprietary binding model. As it is I2C device, we could change it to normal kernel I2C driver. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
parent
df810e8a97
commit
01b4be1452
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@ -40,13 +40,13 @@ static int mn88473_wregs(struct mn88473_dev *dev, u16 reg, const u8 *val, int le
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buf[0] = (reg >> 0) & 0xff;
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buf[0] = (reg >> 0) & 0xff;
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memcpy(&buf[1], val, len);
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memcpy(&buf[1], val, len);
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ret = i2c_transfer(dev->i2c, msg, 1);
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ret = i2c_transfer(dev->client[0]->adapter, msg, 1);
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if (ret == 1) {
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if (ret == 1) {
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ret = 0;
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ret = 0;
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} else {
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} else {
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dev_warn(&dev->i2c->dev,
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dev_warn(&dev->client[0]->dev,
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"%s: i2c wr failed=%d reg=%02x len=%d\n",
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"i2c wr failed=%d reg=%02x len=%d\n",
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KBUILD_MODNAME, ret, reg, len);
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ret, reg, len);
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ret = -EREMOTEIO;
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ret = -EREMOTEIO;
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}
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}
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@ -79,14 +79,14 @@ static int mn88473_rregs(struct mn88473_dev *dev, u16 reg, u8 *val, int len)
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buf[0] = (reg >> 0) & 0xff;
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buf[0] = (reg >> 0) & 0xff;
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ret = i2c_transfer(dev->i2c, msg, 2);
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ret = i2c_transfer(dev->client[0]->adapter, msg, 2);
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if (ret == 2) {
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if (ret == 2) {
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memcpy(val, buf, len);
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memcpy(val, buf, len);
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ret = 0;
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ret = 0;
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} else {
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} else {
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dev_warn(&dev->i2c->dev,
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dev_warn(&dev->client[0]->dev,
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"%s: i2c rd failed=%d reg=%02x len=%d\n",
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"i2c rd failed=%d reg=%02x len=%d\n",
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KBUILD_MODNAME, ret, reg, len);
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ret, reg, len);
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ret = -EREMOTEIO;
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ret = -EREMOTEIO;
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}
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}
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@ -114,15 +114,16 @@ static int mn88473_get_tune_settings(struct dvb_frontend *fe,
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static int mn88473_set_frontend(struct dvb_frontend *fe)
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static int mn88473_set_frontend(struct dvb_frontend *fe)
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{
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret, i;
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int ret, i;
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u32 if_frequency;
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u32 if_frequency;
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u8 delivery_system_val, if_val[3], bw_val[7];
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u8 delivery_system_val, if_val[3], bw_val[7];
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dev_dbg(&dev->i2c->dev,
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dev_dbg(&client->dev,
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"%s: delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
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"delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
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__func__, c->delivery_system, c->modulation,
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c->delivery_system, c->modulation,
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c->frequency, c->bandwidth_hz, c->symbol_rate,
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c->frequency, c->bandwidth_hz, c->symbol_rate,
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c->inversion, c->stream_id);
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c->inversion, c->stream_id);
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@ -188,8 +189,7 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
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if (ret)
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if (ret)
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goto err;
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goto err;
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dev_dbg(&dev->i2c->dev, "%s: get_if_frequency=%d\n",
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dev_dbg(&client->dev, "get_if_frequency=%d\n", if_frequency);
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__func__, if_frequency);
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} else {
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} else {
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if_frequency = 0;
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if_frequency = 0;
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}
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}
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@ -200,8 +200,8 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
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case 5070000:
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case 5070000:
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break;
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break;
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default:
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default:
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dev_err(&dev->i2c->dev, "%s: IF frequency %d not supported\n",
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dev_err(&client->dev, "IF frequency %d not supported\n",
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KBUILD_MODNAME, if_frequency);
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if_frequency);
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ret = -EINVAL;
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ret = -EINVAL;
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goto err;
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goto err;
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}
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}
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@ -271,13 +271,14 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
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return 0;
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return 0;
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err:
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err:
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dev_dbg(&dev->i2c->dev, "%s: failed=%d\n", __func__, ret);
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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return ret;
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}
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}
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static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
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static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
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{
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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int ret;
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int ret;
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*status = 0;
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*status = 0;
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@ -292,49 +293,48 @@ static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
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return 0;
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return 0;
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err:
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err:
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dev_dbg(&dev->i2c->dev, "%s: failed=%d\n", __func__, ret);
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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return ret;
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}
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}
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static int mn88473_init(struct dvb_frontend *fe)
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static int mn88473_init(struct dvb_frontend *fe)
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{
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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int ret, len, remaining;
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int ret, len, remaining;
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const struct firmware *fw = NULL;
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const struct firmware *fw = NULL;
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u8 *fw_file = MN88473_FIRMWARE;
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u8 *fw_file = MN88473_FIRMWARE;
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dev_dbg(&dev->i2c->dev, "%s:\n", __func__);
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dev_dbg(&client->dev, "\n");
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if (dev->warm)
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if (dev->warm)
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return 0;
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return 0;
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/* request the firmware, this will block and timeout */
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/* request the firmware, this will block and timeout */
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ret = request_firmware(&fw, fw_file, dev->i2c->dev.parent);
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ret = request_firmware(&fw, fw_file, &client->dev);
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if (ret) {
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if (ret) {
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dev_err(&dev->i2c->dev, "%s: firmare file '%s' not found\n",
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dev_err(&client->dev, "firmare file '%s' not found\n", fw_file);
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KBUILD_MODNAME, fw_file);
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goto err;
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goto err;
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}
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}
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dev_info(&dev->i2c->dev, "%s: downloading firmware from file '%s'\n",
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dev_info(&client->dev, "downloading firmware from file '%s'\n",
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KBUILD_MODNAME, fw_file);
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fw_file);
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ret = mn88473_wreg(dev, 0x18f5, 0x03);
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ret = mn88473_wreg(dev, 0x18f5, 0x03);
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if (ret)
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if (ret)
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goto err;
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goto err;
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for (remaining = fw->size; remaining > 0;
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for (remaining = fw->size; remaining > 0;
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remaining -= (dev->cfg->i2c_wr_max - 1)) {
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remaining -= (dev->i2c_wr_max - 1)) {
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len = remaining;
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len = remaining;
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if (len > (dev->cfg->i2c_wr_max - 1))
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if (len > (dev->i2c_wr_max - 1))
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len = (dev->cfg->i2c_wr_max - 1);
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len = (dev->i2c_wr_max - 1);
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ret = mn88473_wregs(dev, 0x18f6,
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ret = mn88473_wregs(dev, 0x18f6,
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&fw->data[fw->size - remaining], len);
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&fw->data[fw->size - remaining], len);
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if (ret) {
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if (ret) {
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dev_err(&dev->i2c->dev,
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dev_err(&client->dev, "firmware download failed=%d\n",
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"%s: firmware download failed=%d\n",
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ret);
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KBUILD_MODNAME, ret);
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goto err;
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goto err;
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}
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}
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}
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}
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@ -354,16 +354,17 @@ static int mn88473_init(struct dvb_frontend *fe)
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if (fw)
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if (fw)
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release_firmware(fw);
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release_firmware(fw);
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dev_dbg(&dev->i2c->dev, "%s: failed=%d\n", __func__, ret);
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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return ret;
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}
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}
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static int mn88473_sleep(struct dvb_frontend *fe)
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static int mn88473_sleep(struct dvb_frontend *fe)
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{
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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int ret;
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int ret;
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dev_dbg(&dev->i2c->dev, "%s:\n", __func__);
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dev_dbg(&client->dev, "\n");
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ret = mn88473_wreg(dev, 0x1c05, 0x3e);
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ret = mn88473_wreg(dev, 0x1c05, 0x3e);
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if (ret)
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if (ret)
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@ -373,80 +374,35 @@ static int mn88473_sleep(struct dvb_frontend *fe)
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return 0;
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return 0;
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err:
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err:
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dev_dbg(&dev->i2c->dev, "%s: failed=%d\n", __func__, ret);
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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return ret;
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}
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}
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static void mn88473_release(struct dvb_frontend *fe)
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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kfree(dev);
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}
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struct dvb_frontend *mn88473_attach(const struct mn88473_config *cfg,
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struct i2c_adapter *i2c)
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{
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int ret;
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struct mn88473_dev *dev;
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u8 u8tmp;
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dev_dbg(&i2c->dev, "%s:\n", __func__);
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/* allocate memory for the internal state */
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dev = kzalloc(sizeof(struct mn88473_dev), GFP_KERNEL);
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if (!dev) {
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ret = -ENOMEM;
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dev_err(&i2c->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
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goto err;
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}
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dev->cfg = cfg;
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dev->i2c = i2c;
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/* check demod responds to I2C */
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ret = mn88473_rreg(dev, 0x1c00, &u8tmp);
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if (ret)
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goto err;
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/* create dvb_frontend */
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memcpy(&dev->fe.ops, &mn88473_ops, sizeof(struct dvb_frontend_ops));
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dev->fe.demodulator_priv = dev;
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return &dev->fe;
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err:
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dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
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kfree(dev);
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return NULL;
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}
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EXPORT_SYMBOL(mn88473_attach);
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static struct dvb_frontend_ops mn88473_ops = {
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static struct dvb_frontend_ops mn88473_ops = {
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.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_AC},
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.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_AC},
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.info = {
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.info = {
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.name = "Panasonic MN88473",
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.name = "Panasonic MN88473",
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.caps = FE_CAN_FEC_1_2 |
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.caps = FE_CAN_FEC_1_2 |
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FE_CAN_FEC_2_3 |
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FE_CAN_FEC_2_3 |
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FE_CAN_FEC_3_4 |
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FE_CAN_FEC_3_4 |
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FE_CAN_FEC_5_6 |
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FE_CAN_FEC_5_6 |
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FE_CAN_FEC_7_8 |
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FE_CAN_FEC_7_8 |
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FE_CAN_FEC_AUTO |
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FE_CAN_FEC_AUTO |
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FE_CAN_QPSK |
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FE_CAN_QPSK |
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FE_CAN_QAM_16 |
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FE_CAN_QAM_16 |
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FE_CAN_QAM_32 |
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FE_CAN_QAM_32 |
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FE_CAN_QAM_64 |
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FE_CAN_QAM_64 |
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FE_CAN_QAM_128 |
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FE_CAN_QAM_128 |
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FE_CAN_QAM_256 |
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FE_CAN_QAM_256 |
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FE_CAN_QAM_AUTO |
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FE_CAN_QAM_AUTO |
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FE_CAN_TRANSMISSION_MODE_AUTO |
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FE_CAN_TRANSMISSION_MODE_AUTO |
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FE_CAN_GUARD_INTERVAL_AUTO |
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FE_CAN_GUARD_INTERVAL_AUTO |
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FE_CAN_HIERARCHY_AUTO |
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FE_CAN_HIERARCHY_AUTO |
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FE_CAN_MUTE_TS |
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FE_CAN_MUTE_TS |
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FE_CAN_2G_MODULATION |
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FE_CAN_2G_MODULATION |
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FE_CAN_MULTISTREAM
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FE_CAN_MULTISTREAM
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},
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},
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.release = mn88473_release,
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.get_tune_settings = mn88473_get_tune_settings,
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.get_tune_settings = mn88473_get_tune_settings,
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.init = mn88473_init,
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.init = mn88473_init,
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@ -457,6 +413,110 @@ static struct dvb_frontend_ops mn88473_ops = {
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.read_status = mn88473_read_status,
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.read_status = mn88473_read_status,
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};
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};
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static int mn88473_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct mn88473_config *config = client->dev.platform_data;
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struct mn88473_dev *dev;
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int ret;
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u8 u8tmp;
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dev_dbg(&client->dev, "\n");
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/* Caller really need to provide pointer for frontend we create. */
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if (config->fe == NULL) {
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dev_err(&client->dev, "frontend pointer not defined\n");
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ret = -EINVAL;
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goto err;
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}
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (dev == NULL) {
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ret = -ENOMEM;
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goto err;
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}
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dev->client[0] = client;
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dev->i2c_wr_max = config->i2c_wr_max;
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/* check demod answers to I2C */
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ret = mn88473_rreg(dev, 0x1c00, &u8tmp);
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if (ret)
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goto err_kfree;
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/*
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* Chip has three I2C addresses for different register pages. Used
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* addresses are 0x18, 0x1a and 0x1c. We register two dummy clients,
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* 0x1a and 0x1c, in order to get own I2C client for each register page.
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*/
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dev->client[1] = i2c_new_dummy(client->adapter, 0x1a);
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if (dev->client[1] == NULL) {
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ret = -ENODEV;
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dev_err(&client->dev, "I2C registration failed\n");
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if (ret)
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goto err_kfree;
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}
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i2c_set_clientdata(dev->client[1], dev);
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dev->client[2] = i2c_new_dummy(client->adapter, 0x1c);
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if (dev->client[2] == NULL) {
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ret = -ENODEV;
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dev_err(&client->dev, "2nd I2C registration failed\n");
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|
if (ret)
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goto err_client_1_i2c_unregister_device;
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}
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i2c_set_clientdata(dev->client[2], dev);
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/* create dvb_frontend */
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||||||
|
memcpy(&dev->fe.ops, &mn88473_ops, sizeof(struct dvb_frontend_ops));
|
||||||
|
dev->fe.demodulator_priv = client;
|
||||||
|
*config->fe = &dev->fe;
|
||||||
|
i2c_set_clientdata(client, dev);
|
||||||
|
|
||||||
|
dev_info(&dev->client[0]->dev, "Panasonic MN88473 successfully attached\n");
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
err_client_1_i2c_unregister_device:
|
||||||
|
i2c_unregister_device(dev->client[1]);
|
||||||
|
err_kfree:
|
||||||
|
kfree(dev);
|
||||||
|
err:
|
||||||
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int mn88473_remove(struct i2c_client *client)
|
||||||
|
{
|
||||||
|
struct mn88473_dev *dev = i2c_get_clientdata(client);
|
||||||
|
|
||||||
|
dev_dbg(&client->dev, "\n");
|
||||||
|
|
||||||
|
i2c_unregister_device(dev->client[2]);
|
||||||
|
i2c_unregister_device(dev->client[1]);
|
||||||
|
|
||||||
|
kfree(dev);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static const struct i2c_device_id mn88473_id_table[] = {
|
||||||
|
{"mn88473", 0},
|
||||||
|
{}
|
||||||
|
};
|
||||||
|
MODULE_DEVICE_TABLE(i2c, mn88473_id_table);
|
||||||
|
|
||||||
|
static struct i2c_driver mn88473_driver = {
|
||||||
|
.driver = {
|
||||||
|
.owner = THIS_MODULE,
|
||||||
|
.name = "mn88473",
|
||||||
|
},
|
||||||
|
.probe = mn88473_probe,
|
||||||
|
.remove = mn88473_remove,
|
||||||
|
.id_table = mn88473_id_table,
|
||||||
|
};
|
||||||
|
|
||||||
|
module_i2c_driver(mn88473_driver);
|
||||||
|
|
||||||
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
|
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
|
||||||
MODULE_DESCRIPTION("Panasonic MN88473 DVB-T/T2/C demodulator driver");
|
MODULE_DESCRIPTION("Panasonic MN88473 DVB-T/T2/C demodulator driver");
|
||||||
MODULE_LICENSE("GPL");
|
MODULE_LICENSE("GPL");
|
||||||
|
|
|
@ -21,26 +21,18 @@
|
||||||
|
|
||||||
struct mn88473_config {
|
struct mn88473_config {
|
||||||
/*
|
/*
|
||||||
* max bytes I2C client could write
|
* Max num of bytes given I2C adapter could write at once.
|
||||||
* Value must be set.
|
* Default: none
|
||||||
*/
|
*/
|
||||||
int i2c_wr_max;
|
u16 i2c_wr_max;
|
||||||
|
|
||||||
|
|
||||||
|
/* Everything after that is returned by the driver. */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* DVB frontend.
|
||||||
|
*/
|
||||||
|
struct dvb_frontend **fe;
|
||||||
};
|
};
|
||||||
|
|
||||||
#if IS_ENABLED(CONFIG_DVB_MN88473)
|
|
||||||
extern struct dvb_frontend *mn88473_attach(
|
|
||||||
const struct mn88473_config *cfg,
|
|
||||||
struct i2c_adapter *i2c
|
|
||||||
);
|
|
||||||
#else
|
|
||||||
static inline struct dvb_frontend *mn88473_attach(
|
|
||||||
const struct mn88473_config *cfg,
|
|
||||||
struct i2c_adapter *i2c
|
|
||||||
)
|
|
||||||
{
|
|
||||||
dev_warn(&i2c->dev, "%s: driver disabled by Kconfig\n", __func__);
|
|
||||||
return NULL;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|
|
@ -24,9 +24,9 @@
|
||||||
#define MN88473_FIRMWARE "dvb-demod-mn88473-01.fw"
|
#define MN88473_FIRMWARE "dvb-demod-mn88473-01.fw"
|
||||||
|
|
||||||
struct mn88473_dev {
|
struct mn88473_dev {
|
||||||
struct i2c_adapter *i2c;
|
struct i2c_client *client[3];
|
||||||
const struct mn88473_config *cfg;
|
|
||||||
struct dvb_frontend fe;
|
struct dvb_frontend fe;
|
||||||
|
u16 i2c_wr_max;
|
||||||
fe_delivery_system_t delivery_system;
|
fe_delivery_system_t delivery_system;
|
||||||
bool warm; /* FW running */
|
bool warm; /* FW running */
|
||||||
};
|
};
|
||||||
|
|
Loading…
Reference in a new issue