2019-05-23 09:14:50 +00:00
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// SPDX-License-Identifier: GPL-2.0-or-later
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2006-04-28 00:45:01 +00:00
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/*
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2009-03-03 14:24:18 +00:00
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* lnbp21.c - driver for lnb supply and control ic lnbp21
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2006-04-28 00:45:01 +00:00
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*
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2009-12-13 11:58:38 +00:00
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* Copyright (C) 2006, 2009 Oliver Endriss <o.endriss@gmx.de>
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2009-03-03 14:24:18 +00:00
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* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
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2006-04-28 00:45:01 +00:00
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*
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2015-12-04 12:38:59 +00:00
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* the project's page is at https://linuxtv.org
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2006-04-28 00:45:01 +00:00
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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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2017-12-28 18:03:51 +00:00
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#include <media/dvb_frontend.h>
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2006-04-28 00:45:01 +00:00
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#include "lnbp21.h"
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2009-03-03 14:24:18 +00:00
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#include "lnbh24.h"
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2006-04-28 00:45:01 +00:00
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struct lnbp21 {
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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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2009-03-03 14:24:18 +00:00
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u8 i2c_addr;
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2006-04-28 00:45:01 +00:00
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};
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2009-03-03 14:24:18 +00:00
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static int lnbp21_set_voltage(struct dvb_frontend *fe,
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2015-06-07 17:53:52 +00:00
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enum fe_sec_voltage voltage)
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2006-04-28 00:45:01 +00:00
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{
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2006-08-08 12:10:08 +00:00
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struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
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2009-03-03 14:24:18 +00:00
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struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
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2006-04-28 00:45:01 +00:00
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.buf = &lnbp21->config,
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.len = sizeof(lnbp21->config) };
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lnbp21->config &= ~(LNBP21_VSEL | LNBP21_EN);
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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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lnbp21->config |= LNBP21_EN;
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break;
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case SEC_VOLTAGE_18:
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lnbp21->config |= (LNBP21_EN | LNBP21_VSEL);
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break;
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default:
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return -EINVAL;
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2012-09-28 08:37:22 +00:00
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}
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2006-04-28 00:45:01 +00:00
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lnbp21->config |= lnbp21->override_or;
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lnbp21->config &= lnbp21->override_and;
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return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
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}
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static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
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{
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2006-08-08 12:10:08 +00:00
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struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
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2009-03-03 14:24:18 +00:00
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struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
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2006-04-28 00:45:01 +00:00
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.buf = &lnbp21->config,
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.len = sizeof(lnbp21->config) };
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if (arg)
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lnbp21->config |= LNBP21_LLC;
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else
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lnbp21->config &= ~LNBP21_LLC;
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lnbp21->config |= lnbp21->override_or;
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lnbp21->config &= lnbp21->override_and;
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return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
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}
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2009-12-13 11:58:38 +00:00
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static int lnbp21_set_tone(struct dvb_frontend *fe,
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2015-06-07 17:53:52 +00:00
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enum fe_sec_tone_mode tone)
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2009-12-13 11:58:38 +00:00
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{
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struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
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struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
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.buf = &lnbp21->config,
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.len = sizeof(lnbp21->config) };
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switch (tone) {
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case SEC_TONE_OFF:
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lnbp21->config &= ~LNBP21_TEN;
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break;
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case SEC_TONE_ON:
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lnbp21->config |= LNBP21_TEN;
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break;
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default:
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return -EINVAL;
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2012-09-28 08:37:22 +00:00
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}
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2009-12-13 11:58:38 +00:00
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lnbp21->config |= lnbp21->override_or;
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lnbp21->config &= lnbp21->override_and;
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return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
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}
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2006-04-28 00:45:01 +00:00
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static void lnbp21_release(struct dvb_frontend *fe)
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{
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/* LNBP power off */
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lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF);
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2006-08-08 12:10:08 +00:00
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/* free data */
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kfree(fe->sec_priv);
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fe->sec_priv = NULL;
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2006-04-28 00:45:01 +00:00
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}
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2009-03-03 14:24:18 +00:00
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static struct dvb_frontend *lnbx2x_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, u8 override_set,
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u8 override_clear, u8 i2c_addr, u8 config)
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2006-04-28 00:45:01 +00:00
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{
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struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL);
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if (!lnbp21)
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2006-08-08 12:10:08 +00:00
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return NULL;
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2006-04-28 00:45:01 +00:00
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/* default configuration */
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2009-03-03 14:24:18 +00:00
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lnbp21->config = config;
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2006-04-28 00:45:01 +00:00
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lnbp21->i2c = i2c;
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2009-03-03 14:24:18 +00:00
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lnbp21->i2c_addr = i2c_addr;
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2006-08-08 12:10:08 +00:00
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fe->sec_priv = lnbp21;
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2006-04-28 00:45:01 +00:00
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/* bits which should be forced to '1' */
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lnbp21->override_or = override_set;
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/* bits which should be forced to '0' */
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lnbp21->override_and = ~override_clear;
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/* detect if it is present or not */
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if (lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF)) {
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kfree(lnbp21);
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2006-08-08 12:10:08 +00:00
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return NULL;
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2006-04-28 00:45:01 +00:00
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}
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/* install release callback */
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2006-08-08 22:58:27 +00:00
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fe->ops.release_sec = lnbp21_release;
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2006-04-28 00:45:01 +00:00
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/* override frontend ops */
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2006-05-14 08:01:31 +00:00
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fe->ops.set_voltage = lnbp21_set_voltage;
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fe->ops.enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage;
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2010-01-22 19:01:44 +00:00
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if (!(override_clear & LNBH24_TEN)) /*22kHz logic controlled by demod*/
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2010-01-13 08:01:56 +00:00
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fe->ops.set_tone = lnbp21_set_tone;
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2009-05-23 00:07:46 +00:00
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printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr);
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2006-04-28 00:45:01 +00:00
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2006-08-08 12:10:08 +00:00
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return fe;
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2006-04-28 00:45:01 +00:00
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}
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2009-03-03 14:24:18 +00:00
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2009-03-04 13:40:31 +00:00
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struct dvb_frontend *lnbh24_attach(struct dvb_frontend *fe,
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2009-03-03 14:24:18 +00:00
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struct i2c_adapter *i2c, u8 override_set,
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u8 override_clear, u8 i2c_addr)
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{
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return lnbx2x_attach(fe, i2c, override_set, override_clear,
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i2c_addr, LNBH24_TTX);
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}
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EXPORT_SYMBOL(lnbh24_attach);
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struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, u8 override_set,
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u8 override_clear)
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{
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return lnbx2x_attach(fe, i2c, override_set, override_clear,
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0x08, LNBP21_ISEL);
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}
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2006-04-28 00:45:01 +00:00
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EXPORT_SYMBOL(lnbp21_attach);
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2009-03-03 14:24:18 +00:00
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MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21, lnbh24");
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MODULE_AUTHOR("Oliver Endriss, Igor M. Liplianin");
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2006-04-28 00:45:01 +00:00
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MODULE_LICENSE("GPL");
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