Implement I2C client bindings.
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/dvb-frontends/a8293.c | 87 +++++++++++++++++++++++++++++++++++--
drivers/media/dvb-frontends/a8293.h | 15 +++++++
2 files changed, 99 insertions(+), 3 deletions(-)
diff --git a/drivers/media/dvb-frontends/a8293.c b/drivers/media/dvb-frontends/a8293.c
index 780da58..3f0cf9e 100644
--- a/drivers/media/dvb-frontends/a8293.c
+++ b/drivers/media/dvb-frontends/a8293.c
@@ -22,8 +22,9 @@
#include "a8293.h"
struct a8293_priv {
+ u8 i2c_addr;
struct i2c_adapter *i2c;
- const struct a8293_config *cfg;
+ struct i2c_client *client;
u8 reg[2];
};
@@ -32,7 +33,7 @@ static int a8293_i2c(struct a8293_priv *priv, u8 *val, int len, bool rd)
int ret;
struct i2c_msg msg[1] = {
{
- .addr = priv->cfg->i2c_addr,
+ .addr = priv->i2c_addr,
.len = len,
.buf = val,
}
@@ -128,7 +129,7 @@ struct dvb_frontend *a8293_attach(struct dvb_frontend *fe,
/* setup the priv */
priv->i2c = i2c;
- priv->cfg = cfg;
+ priv->i2c_addr = cfg->i2c_addr;
fe->sec_priv = priv;
/* check if the SEC is there */
@@ -164,6 +165,86 @@ err:
}
EXPORT_SYMBOL(a8293_attach);
+static int a8293_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct a8293_priv *dev;
+ struct a8293_platform_data *pdata = client->dev.platform_data;
+ struct dvb_frontend *fe = pdata->dvb_frontend;
+ int ret;
+ u8 buf[2];
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ dev->client = client;
+ dev->i2c = client->adapter;
+ dev->i2c_addr = client->addr;
+
+ /* check if the SEC is there */
+ ret = a8293_rd(dev, buf, 2);
+ if (ret)
+ goto err_kfree;
+
+ /* ENB=0 */
+ dev->reg[0] = 0x10;
+ ret = a8293_wr(dev, &dev->reg[0], 1);
+ if (ret)
+ goto err_kfree;
+
+ /* TMODE=0, TGATE=1 */
+ dev->reg[1] = 0x82;
+ ret = a8293_wr(dev, &dev->reg[1], 1);
+ if (ret)
+ goto err_kfree;
+
+ /* override frontend ops */
+ fe->ops.set_voltage = a8293_set_voltage;
+
+ fe->sec_priv = dev;
+ i2c_set_clientdata(client, dev);
+
+ dev_info(&client->dev, "Allegro A8293 SEC successfully attached\n");
+ return 0;
+err_kfree:
+ kfree(dev);
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int a8293_remove(struct i2c_client *client)
+{
+ struct a8293_dev *dev = i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "\n");
+
+ kfree(dev);
+ return 0;
+}
+
+static const struct i2c_device_id a8293_id_table[] = {
+ {"a8293", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, a8293_id_table);
+
+static struct i2c_driver a8293_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "a8293",
+ .suppress_bind_attrs = true,
+ },
+ .probe = a8293_probe,
+ .remove = a8293_remove,
+ .id_table = a8293_id_table,
+};
+
+module_i2c_driver(a8293_driver);
+
MODULE_AUTHOR("Antti Palosaari <crope@xxxxxx>");
MODULE_DESCRIPTION("Allegro A8293 SEC driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb-frontends/a8293.h b/drivers/media/dvb-frontends/a8293.h
index 5f04119..aff3653 100644
--- a/drivers/media/dvb-frontends/a8293.h
+++ b/drivers/media/dvb-frontends/a8293.h
@@ -21,8 +21,23 @@
#ifndef A8293_H
#define A8293_H
+#include "dvb_frontend.h"
#include <linux/kconfig.h>
+/*
+ * I2C address
+ * 0x08, 0x09, 0x0a, 0x0b
+ */
+
+/**
+ * struct a8293_platform_data - Platform data for the a8293 driver
+ * @dvb_frontend: DVB frontend.
+ */
+struct a8293_platform_data {
+ struct dvb_frontend *dvb_frontend;
+};
+
+
struct a8293_config {
u8 i2c_addr;
};
--
http://palosaari.fi/
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