mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-18 17:54:13 +08:00
V4L/DVB (4606): Add driver for TUA6100
This driver was originally in budget-av.c, however I have extracted it into a seperate file to permit reuse. I also reworked the code to make it maintainable. I then examined the KNC1 windows drivers and rewrote the code in order to configure the PLL as they do. This solves a lot of reported tuning problems. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Andrew de Quincey
Mauro Carvalho Chehab
parent
c4e4aac887
commit
00be2e7c64
@ -296,4 +296,11 @@ config DVB_ISL6421
|
||||
help
|
||||
An SEC control chip.
|
||||
|
||||
config DVB_TUA6100
|
||||
tristate "TUA6100 PLL"
|
||||
depends on DVB_CORE && I2C
|
||||
default m if DVB_FE_CUSTOMISE
|
||||
help
|
||||
A DVBS PLL chip.
|
||||
|
||||
endmenu
|
||||
|
||||
@ -36,3 +36,4 @@ obj-$(CONFIG_DVB_ISL6421) += isl6421.o
|
||||
obj-$(CONFIG_DVB_TDA10086) += tda10086.o
|
||||
obj-$(CONFIG_DVB_TDA826X) += tda826x.o
|
||||
obj-$(CONFIG_DVB_TUNER_MT2060) += mt2060.o
|
||||
obj-$(CONFIG_DVB_TUA6100) += tua6100.o
|
||||
|
||||
205
drivers/media/dvb/frontends/tua6100.c
Normal file
205
drivers/media/dvb/frontends/tua6100.c
Normal file
@ -0,0 +1,205 @@
|
||||
/**
|
||||
* 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.
|
||||
*
|
||||
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#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 int tua6100_release(struct dvb_frontend *fe)
|
||||
{
|
||||
if (fe->tuner_priv)
|
||||
kfree(fe->tuner_priv);
|
||||
fe->tuner_priv = NULL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
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", __FUNCTION__);
|
||||
}
|
||||
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 dvb_frontend_parameters *params)
|
||||
{
|
||||
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 (params->frequency < 2000000) {
|
||||
reg0[1] = 0x03;
|
||||
} else {
|
||||
reg0[1] = 0x07;
|
||||
}
|
||||
|
||||
// setup register 1
|
||||
if (params->frequency < 1630000) {
|
||||
reg1[1] = 0x2c;
|
||||
} else {
|
||||
reg1[1] = 0x0c;
|
||||
}
|
||||
if (_P == 64)
|
||||
reg1[1] |= 0x40;
|
||||
if (params->frequency >= 1525000)
|
||||
reg1[1] |= 0x80;
|
||||
|
||||
// register 2
|
||||
reg2[1] = (_R >> 8) & 0x03;
|
||||
reg2[2] = _R;
|
||||
if (params->frequency < 1455000) {
|
||||
reg2[1] |= 0x1c;
|
||||
} else if (params->frequency < 1630000) {
|
||||
reg2[1] |= 0x0c;
|
||||
} else {
|
||||
reg2[1] |= 0x1c;
|
||||
}
|
||||
|
||||
// The N divisor ratio (note: params->frequency is in kHz, but we need it in Hz)
|
||||
prediv = (params->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 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");
|
||||
47
drivers/media/dvb/frontends/tua6100.h
Normal file
47
drivers/media/dvb/frontends/tua6100.h
Normal file
@ -0,0 +1,47 @@
|
||||
/**
|
||||
* 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.
|
||||
*
|
||||
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#ifndef __DVB_TUA6100_H__
|
||||
#define __DVB_TUA6100_H__
|
||||
|
||||
#include <linux/i2c.h>
|
||||
#include "dvb_frontend.h"
|
||||
|
||||
/**
|
||||
* Attach a tua6100 pll to the supplied frontend structure.
|
||||
*
|
||||
* @param fe Frontend to attach to.
|
||||
* @param addr i2c address of the pll.
|
||||
* @param i2c i2c adapter to use.
|
||||
* @return FE pointer on success, NULL on failure.
|
||||
*/
|
||||
extern struct dvb_frontend *tua6100_attach(struct dvb_frontend *fe, int addr, struct i2c_adapter *i2c);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user