1 // SPDX-License-Identifier: GPL-2.0
3 // Driver for LNB supply and control IC STMicroelectronics LNBH29
15  * struct lnbh29_priv - LNBH29 driver private data
47 			.addr = priv->i2c_address,  in lnbh29_read_vmon()
52 			.addr = priv->i2c_address,  in lnbh29_read_vmon()
59 	ret = i2c_transfer(priv->i2c, msg, 2);  in lnbh29_read_vmon()
61 		ret = -EIO;  in lnbh29_read_vmon()
63 		dev_dbg(&priv->i2c->dev, "LNBH29 I2C transfer failed (%d)\n",  in lnbh29_read_vmon()
69 		dev_err(&priv->i2c->dev,  in lnbh29_read_vmon()
72 		return -EIO;  in lnbh29_read_vmon()
81 	struct lnbh29_priv *priv = fe->sec_priv;  in lnbh29_set_voltage()
85 		.addr = priv->i2c_address,  in lnbh29_set_voltage()
87 		.len = sizeof(priv->config),  in lnbh29_set_voltage()
88 		.buf = priv->config  in lnbh29_set_voltage()
102 		return -EINVAL;  in lnbh29_set_voltage()
104 	priv->config[1] &= ~LNBH29_VSEL_MASK;  in lnbh29_set_voltage()
105 	priv->config[1] |= data_reg;  in lnbh29_set_voltage()
107 	ret = i2c_transfer(priv->i2c, &msg, 1);  in lnbh29_set_voltage()
109 		ret = -EIO;  in lnbh29_set_voltage()
111 		dev_err(&priv->i2c->dev, "LNBH29 I2C transfer error (%d)\n",  in lnbh29_set_voltage()
116 	/* Soft-start time (Vout 0V to 18V) is Typ. 6ms. */  in lnbh29_set_voltage()
128 	kfree(fe->sec_priv);  in lnbh29_release()
129 	fe->sec_priv = NULL;  in lnbh29_release()
142 	priv->i2c_address = (cfg->i2c_address >> 1);  in lnbh29_attach()
143 	priv->i2c = i2c;  in lnbh29_attach()
144 	priv->config[0] = 0x01;  in lnbh29_attach()
145 	priv->config[1] = cfg->data_config;  in lnbh29_attach()
146 	fe->sec_priv = priv;  in lnbh29_attach()
149 		dev_err(&i2c->dev, "no LNBH29 found at I2C addr 0x%02x\n",  in lnbh29_attach()
150 			priv->i2c_address);  in lnbh29_attach()
152 		fe->sec_priv = NULL;  in lnbh29_attach()
156 	fe->ops.release_sec = lnbh29_release;  in lnbh29_attach()
157 	fe->ops.set_voltage = lnbh29_set_voltage;  in lnbh29_attach()
159 	dev_info(&i2c->dev, "LNBH29 attached at I2C addr 0x%02x\n",  in lnbh29_attach()
160 		 priv->i2c_address);  in lnbh29_attach()