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yaml --- r: 92387 b: refs/heads/master c: 4b1431c h: refs/heads/master i: 92385: 0e095b4 92383: ef10dee v: v3
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Hartmut Hackmann
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Mauro Carvalho Chehab
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Apr 24, 2008
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--- | ||
refs/heads/master: 26ec394e7c528e6f71e53a1335846328b8453ef5 | ||
refs/heads/master: 4b1431ca1c98e26569c9b6cd6d06265cef9495ec |
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/* | ||
* 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. | ||
* | ||
* | ||
* 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 | ||
*/ | ||
#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> | ||
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#include "dvb_frontend.h" | ||
#include "isl6405.h" | ||
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struct isl6405 { | ||
u8 config; | ||
u8 override_or; | ||
u8 override_and; | ||
struct i2c_adapter *i2c; | ||
u8 i2c_addr; | ||
}; | ||
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static int isl6405_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) | ||
{ | ||
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) }; | ||
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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; | ||
}; | ||
} | ||
isl6405->config |= isl6405->override_or; | ||
isl6405->config &= isl6405->override_and; | ||
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return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO; | ||
} | ||
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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) }; | ||
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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; | ||
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return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO; | ||
} | ||
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static void isl6405_release(struct dvb_frontend *fe) | ||
{ | ||
/* power off */ | ||
isl6405_set_voltage(fe, SEC_VOLTAGE_OFF); | ||
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/* free */ | ||
kfree(fe->sec_priv); | ||
fe->sec_priv = NULL; | ||
} | ||
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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; | ||
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/* 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; | ||
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/* bits which should be forced to '1' */ | ||
isl6405->override_or = override_set; | ||
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/* bits which should be forced to '0' */ | ||
isl6405->override_and = ~override_clear; | ||
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/* detect if it is present or not */ | ||
if (isl6405_set_voltage(fe, SEC_VOLTAGE_OFF)) { | ||
kfree(isl6405); | ||
fe->sec_priv = NULL; | ||
return NULL; | ||
} | ||
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/* install release callback */ | ||
fe->ops.release_sec = isl6405_release; | ||
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/* override frontend ops */ | ||
fe->ops.set_voltage = isl6405_set_voltage; | ||
fe->ops.enable_high_lnb_voltage = isl6405_enable_high_lnb_voltage; | ||
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return fe; | ||
} | ||
EXPORT_SYMBOL(isl6405_attach); | ||
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MODULE_DESCRIPTION("Driver for lnb supply and control ic isl6405"); | ||
MODULE_AUTHOR("Hartmut Hackmann & Oliver Endriss"); | ||
MODULE_LICENSE("GPL"); |
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/* | ||
* isl6405.h - 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. | ||
* | ||
* | ||
* 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 | ||
*/ | ||
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#ifndef _ISL6405_H | ||
#define _ISL6405_H | ||
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#include <linux/dvb/frontend.h> | ||
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/* system register bits */ | ||
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/* this bit selects register (control) 1 or 2 | ||
note that the bit maps are different */ | ||
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#define ISL6405_SR 0x80 | ||
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/* SR = 0 */ | ||
#define ISL6405_OLF1 0x01 | ||
#define ISL6405_EN1 0x02 | ||
#define ISL6405_VSEL1 0x04 | ||
#define ISL6405_LLC1 0x08 | ||
#define ISL6405_ENT1 0x10 | ||
#define ISL6405_ISEL1 0x20 | ||
#define ISL6405_DCL 0x40 | ||
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/* SR = 1 */ | ||
#define ISL6405_OLF2 0x01 | ||
#define ISL6405_OTF 0x02 | ||
#define ISL6405_EN2 0x04 | ||
#define ISL6405_VSEL2 0x08 | ||
#define ISL6405_LLC2 0x10 | ||
#define ISL6405_ENT2 0x20 | ||
#define ISL6405_ISEL2 0x40 | ||
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#if defined(CONFIG_DVB_ISL6405) || (defined(CONFIG_DVB_ISL6405_MODULE) && defined(MODULE)) | ||
/* override_set and override_clear control which system register bits (above) | ||
* to always set & clear | ||
*/ | ||
extern struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, | ||
u8 i2c_addr, u8 override_set, u8 override_clear); | ||
#else | ||
static inline struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe, | ||
struct i2c_adapter *i2c, u8 i2c_addr, | ||
u8 override_set, u8 override_clear) | ||
{ | ||
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__); | ||
return NULL; | ||
} | ||
#endif /* CONFIG_DVB_ISL6405 */ | ||
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#endif |
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