mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 19:31:53 +00:00
2f27bdce97
Moved duplicated code to separate files. LNBP21 stuff rewritten from scratch, BSBE1 copied from av7110.c. Modified budget driver to use the new routines. Signed-off-by: Oliver Endriss <o.endriss@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
/*
|
|
* lnbp21.h - driver for lnb supply and control ic lnbp21
|
|
*
|
|
* 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.
|
|
*
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
|
|
*
|
|
*
|
|
* the project's page is at http://www.linuxtv.org
|
|
*/
|
|
|
|
#ifndef _LNBP21_H
|
|
#define _LNBP21_H
|
|
|
|
/* system register */
|
|
#define LNBP21_OLF 0x01
|
|
#define LNBP21_OTF 0x02
|
|
#define LNBP21_EN 0x04
|
|
#define LNBP21_VSEL 0x08
|
|
#define LNBP21_LLC 0x10
|
|
#define LNBP21_TEN 0x20
|
|
#define LNBP21_ISEL 0x40
|
|
#define LNBP21_PCL 0x80
|
|
|
|
struct lnbp21 {
|
|
u8 config;
|
|
u8 override_or;
|
|
u8 override_and;
|
|
struct i2c_adapter *i2c;
|
|
void (*release_chain)(struct dvb_frontend* fe);
|
|
};
|
|
|
|
static int lnbp21_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
|
|
{
|
|
struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->misc_priv;
|
|
struct i2c_msg msg = { .addr = 0x08, .flags = 0,
|
|
.buf = &lnbp21->config,
|
|
.len = sizeof(lnbp21->config) };
|
|
|
|
lnbp21->config &= ~(LNBP21_VSEL | LNBP21_EN);
|
|
|
|
switch(voltage) {
|
|
case SEC_VOLTAGE_OFF:
|
|
break;
|
|
case SEC_VOLTAGE_13:
|
|
lnbp21->config |= LNBP21_EN;
|
|
break;
|
|
case SEC_VOLTAGE_18:
|
|
lnbp21->config |= (LNBP21_EN | LNBP21_VSEL);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
};
|
|
|
|
lnbp21->config |= lnbp21->override_or;
|
|
lnbp21->config &= lnbp21->override_and;
|
|
|
|
return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
|
|
}
|
|
|
|
static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
|
|
{
|
|
struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->misc_priv;
|
|
struct i2c_msg msg = { .addr = 0x08, .flags = 0,
|
|
.buf = &lnbp21->config,
|
|
.len = sizeof(lnbp21->config) };
|
|
|
|
if (arg)
|
|
lnbp21->config |= LNBP21_LLC;
|
|
else
|
|
lnbp21->config &= ~LNBP21_LLC;
|
|
|
|
lnbp21->config |= lnbp21->override_or;
|
|
lnbp21->config &= lnbp21->override_and;
|
|
|
|
return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
|
|
}
|
|
|
|
static void lnbp21_exit(struct dvb_frontend *fe)
|
|
{
|
|
struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->misc_priv;
|
|
|
|
/* LNBP power off */
|
|
lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF);
|
|
|
|
/* free data & call next release routine */
|
|
fe->ops->release = lnbp21->release_chain;
|
|
kfree(fe->misc_priv);
|
|
fe->misc_priv = NULL;
|
|
if (fe->ops->release)
|
|
fe->ops->release(fe);
|
|
}
|
|
|
|
static int lnbp21_init(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 override_set, u8 override_clear)
|
|
{
|
|
struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL);
|
|
|
|
if (!lnbp21)
|
|
return -ENOMEM;
|
|
|
|
/* default configuration */
|
|
lnbp21->config = LNBP21_ISEL;
|
|
|
|
/* bits which should be forced to '1' */
|
|
lnbp21->override_or = override_set;
|
|
|
|
/* bits which should be forced to '0' */
|
|
lnbp21->override_and = ~override_clear;
|
|
|
|
/* install release callback */
|
|
lnbp21->release_chain = fe->ops->release;
|
|
fe->ops->release = lnbp21_exit;
|
|
|
|
/* override frontend ops */
|
|
fe->ops->set_voltage = lnbp21_set_voltage;
|
|
fe->ops->enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage;
|
|
|
|
lnbp21->i2c = i2c;
|
|
fe->misc_priv = lnbp21;
|
|
|
|
return lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF);
|
|
}
|
|
|
|
#endif
|