Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 130 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/a8293.c b/drivers/media/dvb-frontends/a8293.c
new file mode 100644
index 000000000..ba38783b2
--- /dev/null
+++ b/drivers/media/dvb-frontends/a8293.c
@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Allegro A8293 SEC driver
+ *
+ * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
+ */
+
+#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, &reg0, 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, &reg1, 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 void a8293_remove(struct i2c_client *client)
+{
+	struct a8293_dev *dev = i2c_get_clientdata(client);
+
+	dev_dbg(&client->dev, "\n");
+
+	kfree(dev);
+}
+
+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");