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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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991ce92f8d
While https was always supported on linuxtv.org, only in Dec 3 2015 the website is using valid certificates. As we're planning to drop pure http support on some future, change all references at the media subsystem to point to the https URL instead. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
166 lines
4.3 KiB
C
166 lines
4.3 KiB
C
/*
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* isl6405.c - driver for dual lnb supply and control ic ISL6405
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*
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* Copyright (C) 2008 Hartmut Hackmann
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* Copyright (C) 2006 Oliver Endriss
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
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*
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*
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* the project's page is at https://linuxtv.org
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*/
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include "dvb_frontend.h"
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#include "isl6405.h"
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struct isl6405 {
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u8 config;
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u8 override_or;
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u8 override_and;
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struct i2c_adapter *i2c;
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u8 i2c_addr;
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};
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static int isl6405_set_voltage(struct dvb_frontend *fe,
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enum fe_sec_voltage voltage)
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{
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struct isl6405 *isl6405 = (struct isl6405 *) fe->sec_priv;
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struct i2c_msg msg = { .addr = isl6405->i2c_addr, .flags = 0,
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.buf = &isl6405->config,
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.len = sizeof(isl6405->config) };
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if (isl6405->override_or & 0x80) {
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isl6405->config &= ~(ISL6405_VSEL2 | ISL6405_EN2);
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switch (voltage) {
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case SEC_VOLTAGE_OFF:
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break;
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case SEC_VOLTAGE_13:
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isl6405->config |= ISL6405_EN2;
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break;
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case SEC_VOLTAGE_18:
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isl6405->config |= (ISL6405_EN2 | ISL6405_VSEL2);
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break;
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default:
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return -EINVAL;
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}
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} else {
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isl6405->config &= ~(ISL6405_VSEL1 | ISL6405_EN1);
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switch (voltage) {
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case SEC_VOLTAGE_OFF:
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break;
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case SEC_VOLTAGE_13:
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isl6405->config |= ISL6405_EN1;
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break;
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case SEC_VOLTAGE_18:
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isl6405->config |= (ISL6405_EN1 | ISL6405_VSEL1);
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break;
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default:
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return -EINVAL;
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}
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}
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isl6405->config |= isl6405->override_or;
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isl6405->config &= isl6405->override_and;
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return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO;
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}
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static int isl6405_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
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{
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struct isl6405 *isl6405 = (struct isl6405 *) fe->sec_priv;
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struct i2c_msg msg = { .addr = isl6405->i2c_addr, .flags = 0,
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.buf = &isl6405->config,
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.len = sizeof(isl6405->config) };
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if (isl6405->override_or & 0x80) {
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if (arg)
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isl6405->config |= ISL6405_LLC2;
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else
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isl6405->config &= ~ISL6405_LLC2;
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} else {
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if (arg)
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isl6405->config |= ISL6405_LLC1;
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else
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isl6405->config &= ~ISL6405_LLC1;
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}
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isl6405->config |= isl6405->override_or;
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isl6405->config &= isl6405->override_and;
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return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO;
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}
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static void isl6405_release(struct dvb_frontend *fe)
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{
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/* power off */
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isl6405_set_voltage(fe, SEC_VOLTAGE_OFF);
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/* free */
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kfree(fe->sec_priv);
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fe->sec_priv = NULL;
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}
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struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c,
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u8 i2c_addr, u8 override_set, u8 override_clear)
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{
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struct isl6405 *isl6405 = kmalloc(sizeof(struct isl6405), GFP_KERNEL);
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if (!isl6405)
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return NULL;
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/* default configuration */
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if (override_set & 0x80)
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isl6405->config = ISL6405_ISEL2;
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else
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isl6405->config = ISL6405_ISEL1;
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isl6405->i2c = i2c;
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isl6405->i2c_addr = i2c_addr;
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fe->sec_priv = isl6405;
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/* bits which should be forced to '1' */
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isl6405->override_or = override_set;
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/* bits which should be forced to '0' */
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isl6405->override_and = ~override_clear;
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/* detect if it is present or not */
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if (isl6405_set_voltage(fe, SEC_VOLTAGE_OFF)) {
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kfree(isl6405);
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fe->sec_priv = NULL;
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return NULL;
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}
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/* install release callback */
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fe->ops.release_sec = isl6405_release;
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/* override frontend ops */
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fe->ops.set_voltage = isl6405_set_voltage;
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fe->ops.enable_high_lnb_voltage = isl6405_enable_high_lnb_voltage;
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return fe;
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}
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EXPORT_SYMBOL(isl6405_attach);
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MODULE_DESCRIPTION("Driver for lnb supply and control ic isl6405");
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MODULE_AUTHOR("Hartmut Hackmann & Oliver Endriss");
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MODULE_LICENSE("GPL");
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