[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/media/dvb-frontends/a8293.c b/src/kernel/linux/v4.14/drivers/media/dvb-frontends/a8293.c
new file mode 100644
index 0000000..e1e9bdd
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/media/dvb-frontends/a8293.c
@@ -0,0 +1,140 @@
+/*
+ * Allegro A8293 SEC driver
+ *
+ * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "a8293.h"
+
+struct a8293_dev {
+ struct i2c_client *client;
+ u8 reg[2];
+};
+
+static int a8293_set_voltage(struct dvb_frontend *fe,
+ enum fe_sec_voltage fe_sec_voltage)
+{
+ struct a8293_dev *dev = fe->sec_priv;
+ struct i2c_client *client = dev->client;
+ int ret;
+ u8 reg0, reg1;
+
+ dev_dbg(&client->dev, "fe_sec_voltage=%d\n", fe_sec_voltage);
+
+ switch (fe_sec_voltage) {
+ case SEC_VOLTAGE_OFF:
+ /* ENB=0 */
+ reg0 = 0x10;
+ break;
+ case SEC_VOLTAGE_13:
+ /* VSEL0=1, VSEL1=0, VSEL2=0, VSEL3=0, ENB=1*/
+ reg0 = 0x31;
+ break;
+ case SEC_VOLTAGE_18:
+ /* VSEL0=0, VSEL1=0, VSEL2=0, VSEL3=1, ENB=1*/
+ reg0 = 0x38;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+ if (reg0 != dev->reg[0]) {
+ ret = i2c_master_send(client, ®0, 1);
+ if (ret < 0)
+ goto err;
+ dev->reg[0] = reg0;
+ }
+
+ /* TMODE=0, TGATE=1 */
+ reg1 = 0x82;
+ if (reg1 != dev->reg[1]) {
+ ret = i2c_master_send(client, ®1, 1);
+ if (ret < 0)
+ goto err;
+ dev->reg[1] = reg1;
+ }
+
+ usleep_range(1500, 50000);
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int a8293_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct a8293_dev *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;
+
+ /* check if the SEC is there */
+ ret = i2c_master_recv(client, buf, 2);
+ if (ret < 0)
+ 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 = {
+ .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@iki.fi>");
+MODULE_DESCRIPTION("Allegro A8293 SEC driver");
+MODULE_LICENSE("GPL");