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yaml --- r: 113987 b: refs/heads/master c: e4aab64 h: refs/heads/master i: 113985: 4d86efe 113983: 2b01c23 v: v3
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Igor M. Liplianin
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Mauro Carvalho Chehab
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Oct 12, 2008
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--- | ||
refs/heads/master: 8316568930074723bdc47d6777f822be0422a5b7 | ||
refs/heads/master: e4aab64cb78a42e45e1d387f272712e06cf89a66 |
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/* | ||
Driver for ST STB6000 DVBS Silicon tuner | ||
Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by) | ||
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. | ||
*/ | ||
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#include <linux/module.h> | ||
#include <linux/dvb/frontend.h> | ||
#include <asm/types.h> | ||
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#include "stb6000.h" | ||
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static int debug; | ||
#define dprintk(args...) \ | ||
do { \ | ||
if (debug) \ | ||
printk(KERN_DEBUG "stb6000: " args); \ | ||
} while (0) | ||
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struct stb6000_priv { | ||
/* i2c details */ | ||
int i2c_address; | ||
struct i2c_adapter *i2c; | ||
u32 frequency; | ||
}; | ||
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static int stb6000_release(struct dvb_frontend *fe) | ||
{ | ||
kfree(fe->tuner_priv); | ||
fe->tuner_priv = NULL; | ||
return 0; | ||
} | ||
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static int stb6000_sleep(struct dvb_frontend *fe) | ||
{ | ||
struct stb6000_priv *priv = fe->tuner_priv; | ||
int ret; | ||
u8 buf[] = { 10, 0 }; | ||
struct i2c_msg msg = { | ||
.addr = priv->i2c_address, | ||
.flags = 0, | ||
.buf = buf, | ||
.len = 2 | ||
}; | ||
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dprintk("%s:\n", __func__); | ||
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if (fe->ops.i2c_gate_ctrl) | ||
fe->ops.i2c_gate_ctrl(fe, 1); | ||
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ret = i2c_transfer(priv->i2c, &msg, 1); | ||
if (ret != 1) | ||
dprintk("%s: i2c error\n", __func__); | ||
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if (fe->ops.i2c_gate_ctrl) | ||
fe->ops.i2c_gate_ctrl(fe, 0); | ||
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return (ret == 1) ? 0 : ret; | ||
} | ||
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static int stb6000_set_params(struct dvb_frontend *fe, | ||
struct dvb_frontend_parameters *params) | ||
{ | ||
struct stb6000_priv *priv = fe->tuner_priv; | ||
unsigned int n, m; | ||
int ret; | ||
u32 freq_mhz; | ||
int bandwidth; | ||
u8 buf[12]; | ||
struct i2c_msg msg = { | ||
.addr = priv->i2c_address, | ||
.flags = 0, | ||
.buf = buf, | ||
.len = 12 | ||
}; | ||
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dprintk("%s:\n", __func__); | ||
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freq_mhz = params->frequency / 1000; | ||
bandwidth = params->u.qpsk.symbol_rate / 1000000; | ||
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if (bandwidth > 31) | ||
bandwidth = 31; | ||
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if ((freq_mhz > 949) && (freq_mhz < 2151)) { | ||
buf[0] = 0x01; | ||
buf[1] = 0xac; | ||
if (freq_mhz < 1950) | ||
buf[1] = 0xaa; | ||
if (freq_mhz < 1800) | ||
buf[1] = 0xa8; | ||
if (freq_mhz < 1650) | ||
buf[1] = 0xa6; | ||
if (freq_mhz < 1530) | ||
buf[1] = 0xa5; | ||
if (freq_mhz < 1470) | ||
buf[1] = 0xa4; | ||
if (freq_mhz < 1370) | ||
buf[1] = 0xa2; | ||
if (freq_mhz < 1300) | ||
buf[1] = 0xa1; | ||
if (freq_mhz < 1200) | ||
buf[1] = 0xa0; | ||
if (freq_mhz < 1075) | ||
buf[1] = 0xbc; | ||
if (freq_mhz < 1000) | ||
buf[1] = 0xba; | ||
if (freq_mhz < 1075) { | ||
n = freq_mhz / 8; /* vco=lo*4 */ | ||
m = 2; | ||
} else { | ||
n = freq_mhz / 16; /* vco=lo*2 */ | ||
m = 1; | ||
} | ||
buf[2] = n >> 1; | ||
buf[3] = (unsigned char)(((n & 1) << 7) | | ||
(m * freq_mhz - n * 16) | 0x60); | ||
buf[4] = 0x04; | ||
buf[5] = 0x0e; | ||
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buf[6] = (unsigned char)(bandwidth); | ||
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buf[7] = 0xd8; | ||
buf[8] = 0xd0; | ||
buf[9] = 0x50; | ||
buf[10] = 0xeb; | ||
buf[11] = 0x4f; | ||
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if (fe->ops.i2c_gate_ctrl) | ||
fe->ops.i2c_gate_ctrl(fe, 1); | ||
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ret = i2c_transfer(priv->i2c, &msg, 1); | ||
if (ret != 1) | ||
dprintk("%s: i2c error\n", __func__); | ||
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udelay(10); | ||
if (fe->ops.i2c_gate_ctrl) | ||
fe->ops.i2c_gate_ctrl(fe, 0); | ||
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buf[0] = 0x07; | ||
buf[1] = 0xdf; | ||
buf[2] = 0xd0; | ||
buf[3] = 0x50; | ||
buf[4] = 0xfb; | ||
msg.len = 5; | ||
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if (fe->ops.i2c_gate_ctrl) | ||
fe->ops.i2c_gate_ctrl(fe, 1); | ||
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ret = i2c_transfer(priv->i2c, &msg, 1); | ||
if (ret != 1) | ||
dprintk("%s: i2c error\n", __func__); | ||
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udelay(10); | ||
if (fe->ops.i2c_gate_ctrl) | ||
fe->ops.i2c_gate_ctrl(fe, 0); | ||
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priv->frequency = freq_mhz * 1000; | ||
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return (ret == 1) ? 0 : ret; | ||
} | ||
return -1; | ||
} | ||
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static int stb6000_get_frequency(struct dvb_frontend *fe, u32 *frequency) | ||
{ | ||
struct stb6000_priv *priv = fe->tuner_priv; | ||
*frequency = priv->frequency; | ||
return 0; | ||
} | ||
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static struct dvb_tuner_ops stb6000_tuner_ops = { | ||
.info = { | ||
.name = "ST STB6000", | ||
.frequency_min = 950000, | ||
.frequency_max = 2150000 | ||
}, | ||
.release = stb6000_release, | ||
.sleep = stb6000_sleep, | ||
.set_params = stb6000_set_params, | ||
.get_frequency = stb6000_get_frequency, | ||
}; | ||
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struct dvb_frontend *stb6000_attach(struct dvb_frontend *fe, int addr, | ||
struct i2c_adapter *i2c) | ||
{ | ||
struct stb6000_priv *priv = NULL; | ||
u8 b1[] = { 0, 0 }; | ||
struct i2c_msg msg[2] = { | ||
{ | ||
.addr = addr, | ||
.flags = 0, | ||
.buf = NULL, | ||
.len = 0 | ||
}, { | ||
.addr = addr, | ||
.flags = I2C_M_RD, | ||
.buf = b1, | ||
.len = 2 | ||
} | ||
}; | ||
int ret; | ||
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dprintk("%s:\n", __func__); | ||
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if (fe->ops.i2c_gate_ctrl) | ||
fe->ops.i2c_gate_ctrl(fe, 1); | ||
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/* is some i2c device here ? */ | ||
ret = i2c_transfer(i2c, msg, 2); | ||
if (fe->ops.i2c_gate_ctrl) | ||
fe->ops.i2c_gate_ctrl(fe, 0); | ||
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if (ret != 2) | ||
return NULL; | ||
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priv = kzalloc(sizeof(struct stb6000_priv), GFP_KERNEL); | ||
if (priv == NULL) | ||
return NULL; | ||
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priv->i2c_address = addr; | ||
priv->i2c = i2c; | ||
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memcpy(&fe->ops.tuner_ops, &stb6000_tuner_ops, | ||
sizeof(struct dvb_tuner_ops)); | ||
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fe->tuner_priv = priv; | ||
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return fe; | ||
} | ||
EXPORT_SYMBOL(stb6000_attach); | ||
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module_param(debug, int, 0644); | ||
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); | ||
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MODULE_DESCRIPTION("DVB STB6000 driver"); | ||
MODULE_AUTHOR("Igor M. Liplianin <liplianin@me.by>"); | ||
MODULE_LICENSE("GPL"); |
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@@ -0,0 +1,51 @@ | ||
/* | ||
Driver for ST stb6000 DVBS Silicon tuner | ||
Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by) | ||
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. | ||
*/ | ||
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#ifndef __DVB_STB6000_H__ | ||
#define __DVB_STB6000_H__ | ||
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#include <linux/i2c.h> | ||
#include "dvb_frontend.h" | ||
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/** | ||
* Attach a stb6000 tuner to the supplied frontend structure. | ||
* | ||
* @param fe Frontend to attach to. | ||
* @param addr i2c address of the tuner. | ||
* @param i2c i2c adapter to use. | ||
* @return FE pointer on success, NULL on failure. | ||
*/ | ||
#if defined(CONFIG_DVB_STB6000) || (defined(CONFIG_DVB_STB6000_MODULE) \ | ||
&& defined(MODULE)) | ||
extern struct dvb_frontend *stb6000_attach(struct dvb_frontend *fe, int addr, | ||
struct i2c_adapter *i2c); | ||
#else | ||
static inline struct dvb_frontend *stb6000_attach(struct dvb_frontend *fe, | ||
int addr, | ||
struct i2c_adapter *i2c) | ||
{ | ||
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); | ||
return NULL; | ||
} | ||
#endif /* CONFIG_DVB_STB6000 */ | ||
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#endif /* __DVB_STB6000_H__ */ |
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