mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
215cedec37
1) This is not allowed by the kernel coding style 2) Just configure your editor correctly 3) It's really ugly Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
296 lines
7.7 KiB
C
296 lines
7.7 KiB
C
/*
|
|
* Driver for Microtune MT2131 "QAM/8VSB single chip tuner"
|
|
*
|
|
* Copyright (c) 2006 Steven Toth <stoth@linuxtv.org>
|
|
*
|
|
* 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/delay.h>
|
|
#include <linux/dvb/frontend.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "dvb_frontend.h"
|
|
|
|
#include "mt2131.h"
|
|
#include "mt2131_priv.h"
|
|
|
|
static int debug;
|
|
module_param(debug, int, 0644);
|
|
MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
|
|
|
|
#define dprintk(level,fmt, arg...) if (debug >= level) \
|
|
printk(KERN_INFO "%s: " fmt, "mt2131", ## arg)
|
|
|
|
static u8 mt2131_config1[] = {
|
|
0x01,
|
|
0x50, 0x00, 0x50, 0x80, 0x00, 0x49, 0xfa, 0x88,
|
|
0x08, 0x77, 0x41, 0x04, 0x00, 0x00, 0x00, 0x32,
|
|
0x7f, 0xda, 0x4c, 0x00, 0x10, 0xaa, 0x78, 0x80,
|
|
0xff, 0x68, 0xa0, 0xff, 0xdd, 0x00, 0x00
|
|
};
|
|
|
|
static u8 mt2131_config2[] = {
|
|
0x10,
|
|
0x7f, 0xc8, 0x0a, 0x5f, 0x00, 0x04
|
|
};
|
|
|
|
static int mt2131_readreg(struct mt2131_priv *priv, u8 reg, u8 *val)
|
|
{
|
|
struct i2c_msg msg[2] = {
|
|
{ .addr = priv->cfg->i2c_address, .flags = 0,
|
|
.buf = ®, .len = 1 },
|
|
{ .addr = priv->cfg->i2c_address, .flags = I2C_M_RD,
|
|
.buf = val, .len = 1 },
|
|
};
|
|
|
|
if (i2c_transfer(priv->i2c, msg, 2) != 2) {
|
|
printk(KERN_WARNING "mt2131 I2C read failed\n");
|
|
return -EREMOTEIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mt2131_writereg(struct mt2131_priv *priv, u8 reg, u8 val)
|
|
{
|
|
u8 buf[2] = { reg, val };
|
|
struct i2c_msg msg = { .addr = priv->cfg->i2c_address, .flags = 0,
|
|
.buf = buf, .len = 2 };
|
|
|
|
if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
|
|
printk(KERN_WARNING "mt2131 I2C write failed\n");
|
|
return -EREMOTEIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mt2131_writeregs(struct mt2131_priv *priv,u8 *buf, u8 len)
|
|
{
|
|
struct i2c_msg msg = { .addr = priv->cfg->i2c_address,
|
|
.flags = 0, .buf = buf, .len = len };
|
|
|
|
if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
|
|
printk(KERN_WARNING "mt2131 I2C write failed (len=%i)\n",
|
|
(int)len);
|
|
return -EREMOTEIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mt2131_set_params(struct dvb_frontend *fe)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
struct mt2131_priv *priv;
|
|
int ret=0, i;
|
|
u32 freq;
|
|
u8 if_band_center;
|
|
u32 f_lo1, f_lo2;
|
|
u32 div1, num1, div2, num2;
|
|
u8 b[8];
|
|
u8 lockval = 0;
|
|
|
|
priv = fe->tuner_priv;
|
|
|
|
freq = c->frequency / 1000; /* Hz -> kHz */
|
|
dprintk(1, "%s() freq=%d\n", __func__, freq);
|
|
|
|
f_lo1 = freq + MT2131_IF1 * 1000;
|
|
f_lo1 = (f_lo1 / 250) * 250;
|
|
f_lo2 = f_lo1 - freq - MT2131_IF2;
|
|
|
|
priv->frequency = (f_lo1 - f_lo2 - MT2131_IF2) * 1000;
|
|
|
|
/* Frequency LO1 = 16MHz * (DIV1 + NUM1/8192 ) */
|
|
num1 = f_lo1 * 64 / (MT2131_FREF / 128);
|
|
div1 = num1 / 8192;
|
|
num1 &= 0x1fff;
|
|
|
|
/* Frequency LO2 = 16MHz * (DIV2 + NUM2/8192 ) */
|
|
num2 = f_lo2 * 64 / (MT2131_FREF / 128);
|
|
div2 = num2 / 8192;
|
|
num2 &= 0x1fff;
|
|
|
|
if (freq <= 82500) if_band_center = 0x00; else
|
|
if (freq <= 137500) if_band_center = 0x01; else
|
|
if (freq <= 192500) if_band_center = 0x02; else
|
|
if (freq <= 247500) if_band_center = 0x03; else
|
|
if (freq <= 302500) if_band_center = 0x04; else
|
|
if (freq <= 357500) if_band_center = 0x05; else
|
|
if (freq <= 412500) if_band_center = 0x06; else
|
|
if (freq <= 467500) if_band_center = 0x07; else
|
|
if (freq <= 522500) if_band_center = 0x08; else
|
|
if (freq <= 577500) if_band_center = 0x09; else
|
|
if (freq <= 632500) if_band_center = 0x0A; else
|
|
if (freq <= 687500) if_band_center = 0x0B; else
|
|
if (freq <= 742500) if_band_center = 0x0C; else
|
|
if (freq <= 797500) if_band_center = 0x0D; else
|
|
if (freq <= 852500) if_band_center = 0x0E; else
|
|
if (freq <= 907500) if_band_center = 0x0F; else
|
|
if (freq <= 962500) if_band_center = 0x10; else
|
|
if (freq <= 1017500) if_band_center = 0x11; else
|
|
if (freq <= 1072500) if_band_center = 0x12; else if_band_center = 0x13;
|
|
|
|
b[0] = 1;
|
|
b[1] = (num1 >> 5) & 0xFF;
|
|
b[2] = (num1 & 0x1F);
|
|
b[3] = div1;
|
|
b[4] = (num2 >> 5) & 0xFF;
|
|
b[5] = num2 & 0x1F;
|
|
b[6] = div2;
|
|
|
|
dprintk(1, "IF1: %dMHz IF2: %dMHz\n", MT2131_IF1, MT2131_IF2);
|
|
dprintk(1, "PLL freq=%dkHz band=%d\n", (int)freq, (int)if_band_center);
|
|
dprintk(1, "PLL f_lo1=%dkHz f_lo2=%dkHz\n", (int)f_lo1, (int)f_lo2);
|
|
dprintk(1, "PLL div1=%d num1=%d div2=%d num2=%d\n",
|
|
(int)div1, (int)num1, (int)div2, (int)num2);
|
|
dprintk(1, "PLL [1..6]: %2x %2x %2x %2x %2x %2x\n",
|
|
(int)b[1], (int)b[2], (int)b[3], (int)b[4], (int)b[5],
|
|
(int)b[6]);
|
|
|
|
ret = mt2131_writeregs(priv,b,7);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mt2131_writereg(priv, 0x0b, if_band_center);
|
|
|
|
/* Wait for lock */
|
|
i = 0;
|
|
do {
|
|
mt2131_readreg(priv, 0x08, &lockval);
|
|
if ((lockval & 0x88) == 0x88)
|
|
break;
|
|
msleep(4);
|
|
i++;
|
|
} while (i < 10);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mt2131_get_frequency(struct dvb_frontend *fe, u32 *frequency)
|
|
{
|
|
struct mt2131_priv *priv = fe->tuner_priv;
|
|
dprintk(1, "%s()\n", __func__);
|
|
*frequency = priv->frequency;
|
|
return 0;
|
|
}
|
|
|
|
static int mt2131_get_status(struct dvb_frontend *fe, u32 *status)
|
|
{
|
|
struct mt2131_priv *priv = fe->tuner_priv;
|
|
u8 lock_status = 0;
|
|
u8 afc_status = 0;
|
|
|
|
*status = 0;
|
|
|
|
mt2131_readreg(priv, 0x08, &lock_status);
|
|
if ((lock_status & 0x88) == 0x88)
|
|
*status = TUNER_STATUS_LOCKED;
|
|
|
|
mt2131_readreg(priv, 0x09, &afc_status);
|
|
dprintk(1, "%s() - LO Status = 0x%x, AFC Status = 0x%x\n",
|
|
__func__, lock_status, afc_status);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt2131_init(struct dvb_frontend *fe)
|
|
{
|
|
struct mt2131_priv *priv = fe->tuner_priv;
|
|
int ret;
|
|
dprintk(1, "%s()\n", __func__);
|
|
|
|
if ((ret = mt2131_writeregs(priv, mt2131_config1,
|
|
sizeof(mt2131_config1))) < 0)
|
|
return ret;
|
|
|
|
mt2131_writereg(priv, 0x0b, 0x09);
|
|
mt2131_writereg(priv, 0x15, 0x47);
|
|
mt2131_writereg(priv, 0x07, 0xf2);
|
|
mt2131_writereg(priv, 0x0b, 0x01);
|
|
|
|
if ((ret = mt2131_writeregs(priv, mt2131_config2,
|
|
sizeof(mt2131_config2))) < 0)
|
|
return ret;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mt2131_release(struct dvb_frontend *fe)
|
|
{
|
|
dprintk(1, "%s()\n", __func__);
|
|
kfree(fe->tuner_priv);
|
|
fe->tuner_priv = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static const struct dvb_tuner_ops mt2131_tuner_ops = {
|
|
.info = {
|
|
.name = "Microtune MT2131",
|
|
.frequency_min = 48000000,
|
|
.frequency_max = 860000000,
|
|
.frequency_step = 50000,
|
|
},
|
|
|
|
.release = mt2131_release,
|
|
.init = mt2131_init,
|
|
|
|
.set_params = mt2131_set_params,
|
|
.get_frequency = mt2131_get_frequency,
|
|
.get_status = mt2131_get_status
|
|
};
|
|
|
|
struct dvb_frontend * mt2131_attach(struct dvb_frontend *fe,
|
|
struct i2c_adapter *i2c,
|
|
struct mt2131_config *cfg, u16 if1)
|
|
{
|
|
struct mt2131_priv *priv = NULL;
|
|
u8 id = 0;
|
|
|
|
dprintk(1, "%s()\n", __func__);
|
|
|
|
priv = kzalloc(sizeof(struct mt2131_priv), GFP_KERNEL);
|
|
if (priv == NULL)
|
|
return NULL;
|
|
|
|
priv->cfg = cfg;
|
|
priv->i2c = i2c;
|
|
|
|
if (mt2131_readreg(priv, 0, &id) != 0) {
|
|
kfree(priv);
|
|
return NULL;
|
|
}
|
|
if ( (id != 0x3E) && (id != 0x3F) ) {
|
|
printk(KERN_ERR "MT2131: Device not found at addr 0x%02x\n",
|
|
cfg->i2c_address);
|
|
kfree(priv);
|
|
return NULL;
|
|
}
|
|
|
|
printk(KERN_INFO "MT2131: successfully identified at address 0x%02x\n",
|
|
cfg->i2c_address);
|
|
memcpy(&fe->ops.tuner_ops, &mt2131_tuner_ops,
|
|
sizeof(struct dvb_tuner_ops));
|
|
|
|
fe->tuner_priv = priv;
|
|
return fe;
|
|
}
|
|
EXPORT_SYMBOL(mt2131_attach);
|
|
|
|
MODULE_AUTHOR("Steven Toth");
|
|
MODULE_DESCRIPTION("Microtune MT2131 silicon tuner driver");
|
|
MODULE_LICENSE("GPL");
|