2008-04-22 11:42:09 -06:00
|
|
|
/*
|
|
|
|
* isl6405.c - driver for dual lnb supply and control ic ISL6405
|
|
|
|
*
|
|
|
|
* Copyright (C) 2008 Hartmut Hackmann
|
|
|
|
* Copyright (C) 2006 Oliver Endriss
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*
|
2016-10-28 05:31:20 -06:00
|
|
|
* To obtain the license, point your browser to
|
|
|
|
* http://www.gnu.org/copyleft/gpl.html
|
2008-04-22 11:42:09 -06:00
|
|
|
*
|
|
|
|
*
|
2015-12-04 05:38:59 -07:00
|
|
|
* the project's page is at https://linuxtv.org
|
2008-04-22 11:42:09 -06:00
|
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/errno.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/string.h>
|
|
|
|
#include <linux/slab.h>
|
|
|
|
|
2017-12-28 11:03:51 -07:00
|
|
|
#include <media/dvb_frontend.h>
|
2008-04-22 11:42:09 -06:00
|
|
|
#include "isl6405.h"
|
|
|
|
|
|
|
|
struct isl6405 {
|
|
|
|
u8 config;
|
|
|
|
u8 override_or;
|
|
|
|
u8 override_and;
|
|
|
|
struct i2c_adapter *i2c;
|
|
|
|
u8 i2c_addr;
|
|
|
|
};
|
|
|
|
|
2015-06-07 11:53:52 -06:00
|
|
|
static int isl6405_set_voltage(struct dvb_frontend *fe,
|
|
|
|
enum fe_sec_voltage voltage)
|
2008-04-22 11:42:09 -06:00
|
|
|
{
|
|
|
|
struct isl6405 *isl6405 = (struct isl6405 *) fe->sec_priv;
|
|
|
|
struct i2c_msg msg = { .addr = isl6405->i2c_addr, .flags = 0,
|
|
|
|
.buf = &isl6405->config,
|
|
|
|
.len = sizeof(isl6405->config) };
|
|
|
|
|
|
|
|
if (isl6405->override_or & 0x80) {
|
|
|
|
isl6405->config &= ~(ISL6405_VSEL2 | ISL6405_EN2);
|
|
|
|
switch (voltage) {
|
|
|
|
case SEC_VOLTAGE_OFF:
|
|
|
|
break;
|
|
|
|
case SEC_VOLTAGE_13:
|
|
|
|
isl6405->config |= ISL6405_EN2;
|
|
|
|
break;
|
|
|
|
case SEC_VOLTAGE_18:
|
|
|
|
isl6405->config |= (ISL6405_EN2 | ISL6405_VSEL2);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
isl6405->config &= ~(ISL6405_VSEL1 | ISL6405_EN1);
|
|
|
|
switch (voltage) {
|
|
|
|
case SEC_VOLTAGE_OFF:
|
|
|
|
break;
|
|
|
|
case SEC_VOLTAGE_13:
|
|
|
|
isl6405->config |= ISL6405_EN1;
|
|
|
|
break;
|
|
|
|
case SEC_VOLTAGE_18:
|
|
|
|
isl6405->config |= (ISL6405_EN1 | ISL6405_VSEL1);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
2012-09-28 02:37:22 -06:00
|
|
|
}
|
2008-04-22 11:42:09 -06:00
|
|
|
}
|
|
|
|
isl6405->config |= isl6405->override_or;
|
|
|
|
isl6405->config &= isl6405->override_and;
|
|
|
|
|
|
|
|
return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int isl6405_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
|
|
|
|
{
|
|
|
|
struct isl6405 *isl6405 = (struct isl6405 *) fe->sec_priv;
|
|
|
|
struct i2c_msg msg = { .addr = isl6405->i2c_addr, .flags = 0,
|
|
|
|
.buf = &isl6405->config,
|
|
|
|
.len = sizeof(isl6405->config) };
|
|
|
|
|
|
|
|
if (isl6405->override_or & 0x80) {
|
|
|
|
if (arg)
|
|
|
|
isl6405->config |= ISL6405_LLC2;
|
|
|
|
else
|
|
|
|
isl6405->config &= ~ISL6405_LLC2;
|
|
|
|
} else {
|
|
|
|
if (arg)
|
|
|
|
isl6405->config |= ISL6405_LLC1;
|
|
|
|
else
|
|
|
|
isl6405->config &= ~ISL6405_LLC1;
|
|
|
|
}
|
|
|
|
isl6405->config |= isl6405->override_or;
|
|
|
|
isl6405->config &= isl6405->override_and;
|
|
|
|
|
|
|
|
return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void isl6405_release(struct dvb_frontend *fe)
|
|
|
|
{
|
|
|
|
/* power off */
|
|
|
|
isl6405_set_voltage(fe, SEC_VOLTAGE_OFF);
|
|
|
|
|
|
|
|
/* free */
|
|
|
|
kfree(fe->sec_priv);
|
|
|
|
fe->sec_priv = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c,
|
|
|
|
u8 i2c_addr, u8 override_set, u8 override_clear)
|
|
|
|
{
|
|
|
|
struct isl6405 *isl6405 = kmalloc(sizeof(struct isl6405), GFP_KERNEL);
|
|
|
|
if (!isl6405)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
/* default configuration */
|
|
|
|
if (override_set & 0x80)
|
|
|
|
isl6405->config = ISL6405_ISEL2;
|
|
|
|
else
|
|
|
|
isl6405->config = ISL6405_ISEL1;
|
|
|
|
isl6405->i2c = i2c;
|
|
|
|
isl6405->i2c_addr = i2c_addr;
|
|
|
|
fe->sec_priv = isl6405;
|
|
|
|
|
|
|
|
/* bits which should be forced to '1' */
|
|
|
|
isl6405->override_or = override_set;
|
|
|
|
|
|
|
|
/* bits which should be forced to '0' */
|
|
|
|
isl6405->override_and = ~override_clear;
|
|
|
|
|
|
|
|
/* detect if it is present or not */
|
|
|
|
if (isl6405_set_voltage(fe, SEC_VOLTAGE_OFF)) {
|
|
|
|
kfree(isl6405);
|
|
|
|
fe->sec_priv = NULL;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* install release callback */
|
|
|
|
fe->ops.release_sec = isl6405_release;
|
|
|
|
|
|
|
|
/* override frontend ops */
|
|
|
|
fe->ops.set_voltage = isl6405_set_voltage;
|
|
|
|
fe->ops.enable_high_lnb_voltage = isl6405_enable_high_lnb_voltage;
|
|
|
|
|
|
|
|
return fe;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(isl6405_attach);
|
|
|
|
|
|
|
|
MODULE_DESCRIPTION("Driver for lnb supply and control ic isl6405");
|
|
|
|
MODULE_AUTHOR("Hartmut Hackmann & Oliver Endriss");
|
|
|
|
MODULE_LICENSE("GPL");
|