14b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann/* 24b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * isl6405.c - driver for dual lnb supply and control ic ISL6405 34b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * 44b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * Copyright (C) 2008 Hartmut Hackmann 54b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * Copyright (C) 2006 Oliver Endriss 64b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * 74b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * This program is free software; you can redistribute it and/or 84b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * modify it under the terms of the GNU General Public License 94b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * as published by the Free Software Foundation; either version 2 104b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * of the License, or (at your option) any later version. 114b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * 124b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * 134b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * This program is distributed in the hope that it will be useful, 144b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * but WITHOUT ANY WARRANTY; without even the implied warranty of 154b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 164b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * GNU General Public License for more details. 174b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * 184b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * 194b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * You should have received a copy of the GNU General Public License 204b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * along with this program; if not, write to the Free Software 214b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 224b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * Or, point your browser to http://www.gnu.org/copyleft/gpl.html 234b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * 244b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * 254b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann * the project's page is at http://www.linuxtv.org 264b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann */ 274b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann#include <linux/delay.h> 284b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann#include <linux/errno.h> 294b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann#include <linux/init.h> 304b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann#include <linux/kernel.h> 314b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann#include <linux/module.h> 324b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann#include <linux/string.h> 334b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann#include <linux/slab.h> 344b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 354b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann#include "dvb_frontend.h" 364b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann#include "isl6405.h" 374b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 384b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmannstruct isl6405 { 394b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann u8 config; 404b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann u8 override_or; 414b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann u8 override_and; 424b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann struct i2c_adapter *i2c; 434b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann u8 i2c_addr; 444b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann}; 454b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 464b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmannstatic int isl6405_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) 474b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann{ 484b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann struct isl6405 *isl6405 = (struct isl6405 *) fe->sec_priv; 494b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann struct i2c_msg msg = { .addr = isl6405->i2c_addr, .flags = 0, 504b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann .buf = &isl6405->config, 514b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann .len = sizeof(isl6405->config) }; 524b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 534b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann if (isl6405->override_or & 0x80) { 544b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config &= ~(ISL6405_VSEL2 | ISL6405_EN2); 554b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann switch (voltage) { 564b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann case SEC_VOLTAGE_OFF: 574b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann break; 584b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann case SEC_VOLTAGE_13: 594b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config |= ISL6405_EN2; 604b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann break; 614b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann case SEC_VOLTAGE_18: 624b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config |= (ISL6405_EN2 | ISL6405_VSEL2); 634b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann break; 644b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann default: 654b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann return -EINVAL; 664b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann } 674b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann } else { 684b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config &= ~(ISL6405_VSEL1 | ISL6405_EN1); 694b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann switch (voltage) { 704b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann case SEC_VOLTAGE_OFF: 714b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann break; 724b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann case SEC_VOLTAGE_13: 734b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config |= ISL6405_EN1; 744b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann break; 754b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann case SEC_VOLTAGE_18: 764b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config |= (ISL6405_EN1 | ISL6405_VSEL1); 774b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann break; 784b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann default: 794b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann return -EINVAL; 80c2c1b4156a447f113ef4d167decce29399c2667cPeter Senna Tschudin } 814b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann } 824b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config |= isl6405->override_or; 834b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config &= isl6405->override_and; 844b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 854b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO; 864b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann} 874b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 884b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmannstatic int isl6405_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg) 894b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann{ 904b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann struct isl6405 *isl6405 = (struct isl6405 *) fe->sec_priv; 914b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann struct i2c_msg msg = { .addr = isl6405->i2c_addr, .flags = 0, 924b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann .buf = &isl6405->config, 934b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann .len = sizeof(isl6405->config) }; 944b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 954b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann if (isl6405->override_or & 0x80) { 964b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann if (arg) 974b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config |= ISL6405_LLC2; 984b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann else 994b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config &= ~ISL6405_LLC2; 1004b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann } else { 1014b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann if (arg) 1024b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config |= ISL6405_LLC1; 1034b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann else 1044b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config &= ~ISL6405_LLC1; 1054b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann } 1064b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config |= isl6405->override_or; 1074b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config &= isl6405->override_and; 1084b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1094b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO; 1104b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann} 1114b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1124b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmannstatic void isl6405_release(struct dvb_frontend *fe) 1134b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann{ 1144b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann /* power off */ 1154b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405_set_voltage(fe, SEC_VOLTAGE_OFF); 1164b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1174b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann /* free */ 1184b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann kfree(fe->sec_priv); 1194b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann fe->sec_priv = NULL; 1204b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann} 1214b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1224b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmannstruct dvb_frontend *isl6405_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, 1234b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann u8 i2c_addr, u8 override_set, u8 override_clear) 1244b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann{ 1254b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann struct isl6405 *isl6405 = kmalloc(sizeof(struct isl6405), GFP_KERNEL); 1264b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann if (!isl6405) 1274b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann return NULL; 1284b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1294b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann /* default configuration */ 1304b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann if (override_set & 0x80) 1314b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config = ISL6405_ISEL2; 1324b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann else 1334b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->config = ISL6405_ISEL1; 1344b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->i2c = i2c; 1354b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->i2c_addr = i2c_addr; 1364b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann fe->sec_priv = isl6405; 1374b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1384b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann /* bits which should be forced to '1' */ 1394b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->override_or = override_set; 1404b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1414b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann /* bits which should be forced to '0' */ 1424b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann isl6405->override_and = ~override_clear; 1434b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1444b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann /* detect if it is present or not */ 1454b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann if (isl6405_set_voltage(fe, SEC_VOLTAGE_OFF)) { 1464b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann kfree(isl6405); 1474b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann fe->sec_priv = NULL; 1484b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann return NULL; 1494b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann } 1504b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1514b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann /* install release callback */ 1524b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann fe->ops.release_sec = isl6405_release; 1534b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1544b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann /* override frontend ops */ 1554b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann fe->ops.set_voltage = isl6405_set_voltage; 1564b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann fe->ops.enable_high_lnb_voltage = isl6405_enable_high_lnb_voltage; 1574b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1584b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann return fe; 1594b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann} 1604b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut HackmannEXPORT_SYMBOL(isl6405_attach); 1614b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut Hackmann 1624b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut HackmannMODULE_DESCRIPTION("Driver for lnb supply and control ic isl6405"); 1634b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut HackmannMODULE_AUTHOR("Hartmut Hackmann & Oliver Endriss"); 1644b1431ca1c98e26569c9b6cd6d06265cef9495ecHartmut HackmannMODULE_LICENSE("GPL"); 165