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linux-next/drivers/media/dvb-frontends/tua6100.c
Sakari Ailus bcb63314e2 [media] media: Drop FSF's postal address from the source code files 
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00

202 lines
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/**
* Driver for Infineon tua6100 pll.
*
* (c) 2006 Andrew de Quincey
*
* Based on code found in budget-av.c, which has the following:
* Compiled from various sources by Michael Hunold <michael@mihu.de>
*
* CI interface support (c) 2004 Olivier Gournet <ogournet@anevia.com> &
* Andrew de Quincey <adq_dvb@lidskialf.net>
*
* Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
*
* Copyright (C) 1999-2002 Ralph Metzler
* & Marcus Metzler for convergence integrated media GmbH
* 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.
*/
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/dvb/frontend.h>
#include <asm/types.h>
#include "tua6100.h"
struct tua6100_priv {
/* i2c details */
int i2c_address;
struct i2c_adapter *i2c;
u32 frequency;
};
static void tua6100_release(struct dvb_frontend *fe)
{
kfree(fe->tuner_priv);
fe->tuner_priv = NULL;
}
static int tua6100_sleep(struct dvb_frontend *fe)
{
struct tua6100_priv *priv = fe->tuner_priv;
int ret;
u8 reg0[] = { 0x00, 0x00 };
struct i2c_msg msg = { .addr = priv->i2c_address, .flags = 0, .buf = reg0, .len = 2 };
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if ((ret = i2c_transfer (priv->i2c, &msg, 1)) != 1) {
printk("%s: i2c error\n", __func__);
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return (ret == 1) ? 0 : ret;
}
static int tua6100_set_params(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct tua6100_priv *priv = fe->tuner_priv;
u32 div;
u32 prediv;
u8 reg0[] = { 0x00, 0x00 };
u8 reg1[] = { 0x01, 0x00, 0x00, 0x00 };
u8 reg2[] = { 0x02, 0x00, 0x00 };
struct i2c_msg msg0 = { .addr = priv->i2c_address, .flags = 0, .buf = reg0, .len = 2 };
struct i2c_msg msg1 = { .addr = priv->i2c_address, .flags = 0, .buf = reg1, .len = 4 };
struct i2c_msg msg2 = { .addr = priv->i2c_address, .flags = 0, .buf = reg2, .len = 3 };
#define _R 4
#define _P 32
#define _ri 4000000
// setup register 0
if (c->frequency < 2000000)
reg0[1] = 0x03;
else
reg0[1] = 0x07;
// setup register 1
if (c->frequency < 1630000)
reg1[1] = 0x2c;
else
reg1[1] = 0x0c;
if (_P == 64)
reg1[1] |= 0x40;
if (c->frequency >= 1525000)
reg1[1] |= 0x80;
// register 2
reg2[1] = (_R >> 8) & 0x03;
reg2[2] = _R;
if (c->frequency < 1455000)
reg2[1] |= 0x1c;
else if (c->frequency < 1630000)
reg2[1] |= 0x0c;
else
reg2[1] |= 0x1c;
/*
* The N divisor ratio (note: c->frequency is in kHz, but we
* need it in Hz)
*/
prediv = (c->frequency * _R) / (_ri / 1000);
div = prediv / _P;
reg1[1] |= (div >> 9) & 0x03;
reg1[2] = div >> 1;
reg1[3] = (div << 7);
priv->frequency = ((div * _P) * (_ri / 1000)) / _R;
// Finally, calculate and store the value for A
reg1[3] |= (prediv - (div*_P)) & 0x7f;
#undef _R
#undef _P
#undef _ri
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if (i2c_transfer(priv->i2c, &msg0, 1) != 1)
return -EIO;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if (i2c_transfer(priv->i2c, &msg2, 1) != 1)
return -EIO;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if (i2c_transfer(priv->i2c, &msg1, 1) != 1)
return -EIO;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return 0;
}
static int tua6100_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct tua6100_priv *priv = fe->tuner_priv;
*frequency = priv->frequency;
return 0;
}
static const struct dvb_tuner_ops tua6100_tuner_ops = {
.info = {
.name = "Infineon TUA6100",
.frequency_min = 950000,
.frequency_max = 2150000,
.frequency_step = 1000,
},
.release = tua6100_release,
.sleep = tua6100_sleep,
.set_params = tua6100_set_params,
.get_frequency = tua6100_get_frequency,
};
struct dvb_frontend *tua6100_attach(struct dvb_frontend *fe, int addr, struct i2c_adapter *i2c)
{
struct tua6100_priv *priv = NULL;
u8 b1 [] = { 0x80 };
u8 b2 [] = { 0x00 };
struct i2c_msg msg [] = { { .addr = addr, .flags = 0, .buf = b1, .len = 1 },
{ .addr = addr, .flags = I2C_M_RD, .buf = b2, .len = 1 } };
int ret;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
ret = i2c_transfer (i2c, msg, 2);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
if (ret != 2)
return NULL;
priv = kzalloc(sizeof(struct tua6100_priv), GFP_KERNEL);
if (priv == NULL)
return NULL;
priv->i2c_address = addr;
priv->i2c = i2c;
memcpy(&fe->ops.tuner_ops, &tua6100_tuner_ops, sizeof(struct dvb_tuner_ops));
fe->tuner_priv = priv;
return fe;
}
EXPORT_SYMBOL(tua6100_attach);
MODULE_DESCRIPTION("DVB tua6100 driver");
MODULE_AUTHOR("Andrew de Quincey");
MODULE_LICENSE("GPL");
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