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path: root/drivers/media/tuners/mt2060.c
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Diffstat (limited to 'drivers/media/tuners/mt2060.c')
-rw-r--r--drivers/media/tuners/mt2060.c129
1 files changed, 121 insertions, 8 deletions
diff --git a/drivers/media/tuners/mt2060.c b/drivers/media/tuners/mt2060.c
index 94077ea78dde..2e487f9a2cc3 100644
--- a/drivers/media/tuners/mt2060.c
+++ b/drivers/media/tuners/mt2060.c
@@ -13,10 +13,6 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*
* GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.=
*/
/* In that file, frequencies are expressed in kiloHertz to avoid 32 bits overflows */
@@ -71,13 +67,24 @@ static int mt2060_writereg(struct mt2060_priv *priv, u8 reg, u8 val)
// Writes a set of consecutive registers
static int mt2060_writeregs(struct mt2060_priv *priv,u8 *buf, u8 len)
{
+ int rem, val_len;
+ u8 xfer_buf[16];
struct i2c_msg msg = {
- .addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = len
+ .addr = priv->cfg->i2c_address, .flags = 0, .buf = xfer_buf
};
- if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
- printk(KERN_WARNING "mt2060 I2C write failed (len=%i)\n",(int)len);
- return -EREMOTEIO;
+
+ for (rem = len - 1; rem > 0; rem -= priv->i2c_max_regs) {
+ val_len = min_t(int, rem, priv->i2c_max_regs);
+ msg.len = 1 + val_len;
+ xfer_buf[0] = buf[0] + len - 1 - rem;
+ memcpy(&xfer_buf[1], &buf[1 + len - 1 - rem], val_len);
+
+ if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
+ printk(KERN_WARNING "mt2060 I2C write failed (len=%i)\n", val_len);
+ return -EREMOTEIO;
+ }
}
+
return 0;
}
@@ -306,9 +313,16 @@ static int mt2060_init(struct dvb_frontend *fe)
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
+ if (priv->sleep) {
+ ret = mt2060_writereg(priv, REG_MISC_CTRL, 0x20);
+ if (ret)
+ goto err_i2c_gate_ctrl;
+ }
+
ret = mt2060_writereg(priv, REG_VGAG,
(priv->cfg->clock_out << 6) | 0x33);
+err_i2c_gate_ctrl:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
@@ -325,7 +339,13 @@ static int mt2060_sleep(struct dvb_frontend *fe)
ret = mt2060_writereg(priv, REG_VGAG,
(priv->cfg->clock_out << 6) | 0x30);
+ if (ret)
+ goto err_i2c_gate_ctrl;
+
+ if (priv->sleep)
+ ret = mt2060_writereg(priv, REG_MISC_CTRL, 0xe8);
+err_i2c_gate_ctrl:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
@@ -369,6 +389,7 @@ struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter
priv->cfg = cfg;
priv->i2c = i2c;
priv->if1_freq = if1;
+ priv->i2c_max_regs = ~0;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
@@ -396,6 +417,98 @@ struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter
}
EXPORT_SYMBOL(mt2060_attach);
+static int mt2060_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct mt2060_platform_data *pdata = client->dev.platform_data;
+ struct dvb_frontend *fe;
+ struct mt2060_priv *dev;
+ int ret;
+ u8 chip_id;
+
+ dev_dbg(&client->dev, "\n");
+
+ if (!pdata) {
+ dev_err(&client->dev, "Cannot proceed without platform data\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ dev = devm_kzalloc(&client->dev, sizeof(*dev), GFP_KERNEL);
+ if (!dev) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ fe = pdata->dvb_frontend;
+ dev->config.i2c_address = client->addr;
+ dev->config.clock_out = pdata->clock_out;
+ dev->cfg = &dev->config;
+ dev->i2c = client->adapter;
+ dev->if1_freq = pdata->if1 ? pdata->if1 : 1220;
+ dev->client = client;
+ dev->i2c_max_regs = pdata->i2c_write_max ? pdata->i2c_write_max - 1 : ~0;
+ dev->sleep = true;
+
+ ret = mt2060_readreg(dev, REG_PART_REV, &chip_id);
+ if (ret) {
+ ret = -ENODEV;
+ goto err;
+ }
+
+ dev_dbg(&client->dev, "chip id=%02x\n", chip_id);
+
+ if (chip_id != PART_REV) {
+ ret = -ENODEV;
+ goto err;
+ }
+
+ /* Power on, calibrate, sleep */
+ ret = mt2060_writereg(dev, REG_MISC_CTRL, 0x20);
+ if (ret)
+ goto err;
+ mt2060_calibrate(dev);
+ ret = mt2060_writereg(dev, REG_MISC_CTRL, 0xe8);
+ if (ret)
+ goto err;
+
+ dev_info(&client->dev, "Microtune MT2060 successfully identified\n");
+ memcpy(&fe->ops.tuner_ops, &mt2060_tuner_ops, sizeof(fe->ops.tuner_ops));
+ fe->ops.tuner_ops.release = NULL;
+ fe->tuner_priv = dev;
+ i2c_set_clientdata(client, dev);
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int mt2060_remove(struct i2c_client *client)
+{
+ dev_dbg(&client->dev, "\n");
+
+ return 0;
+}
+
+static const struct i2c_device_id mt2060_id_table[] = {
+ {"mt2060", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, mt2060_id_table);
+
+static struct i2c_driver mt2060_driver = {
+ .driver = {
+ .name = "mt2060",
+ .suppress_bind_attrs = true,
+ },
+ .probe = mt2060_probe,
+ .remove = mt2060_remove,
+ .id_table = mt2060_id_table,
+};
+
+module_i2c_driver(mt2060_driver);
+
MODULE_AUTHOR("Olivier DANET");
MODULE_DESCRIPTION("Microtune MT2060 silicon tuner driver");
MODULE_LICENSE("GPL");