2 STV6110(A) Silicon tuner driver
4 Copyright (C) Manu Abraham <abraham.manu@gmail.com>
6 Copyright (C) ST Microelectronics
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include <linux/init.h>
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/slab.h>
27 #include <linux/string.h>
29 #include "dvb_frontend.h"
31 #include "stv6110x_reg.h"
33 #include "stv6110x_priv.h"
35 static unsigned int verbose
;
36 module_param(verbose
, int, 0644);
37 MODULE_PARM_DESC(verbose
, "Set Verbosity level");
39 static int stv6110x_read_reg(struct stv6110x_state
*stv6110x
, u8 reg
, u8
*data
)
42 const struct stv6110x_config
*config
= stv6110x
->config
;
45 struct i2c_msg msg
[] = {
46 { .addr
= config
->addr
, .flags
= 0, .buf
= b0
, .len
= 1 },
47 { .addr
= config
->addr
, .flags
= I2C_M_RD
, .buf
= b1
, .len
= 1 }
50 ret
= i2c_transfer(stv6110x
->i2c
, msg
, 2);
52 dprintk(FE_ERROR
, 1, "I/O Error");
60 static int stv6110x_write_regs(struct stv6110x_state
*stv6110x
, int start
, u8 data
[], int len
)
63 const struct stv6110x_config
*config
= stv6110x
->config
;
65 struct i2c_msg msg
= {
76 memcpy(&buf
[1], data
, len
);
78 ret
= i2c_transfer(stv6110x
->i2c
, &msg
, 1);
80 dprintk(FE_ERROR
, 1, "I/O Error");
87 static int stv6110x_write_reg(struct stv6110x_state
*stv6110x
, u8 reg
, u8 data
)
89 return stv6110x_write_regs(stv6110x
, reg
, &data
, 1);
92 static int stv6110x_init(struct dvb_frontend
*fe
)
94 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
97 ret
= stv6110x_write_regs(stv6110x
, 0, stv6110x
->regs
,
98 ARRAY_SIZE(stv6110x
->regs
));
100 dprintk(FE_ERROR
, 1, "Initialization failed");
107 static int stv6110x_set_frequency(struct dvb_frontend
*fe
, u32 frequency
)
109 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
111 s32 pVal
, pCalc
, rDivOpt
= 0, pCalcOpt
= 1000;
114 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL1
], CTRL1_K
, (REFCLOCK_MHz
- 16));
116 if (frequency
<= 1023000) {
117 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_DIV4SEL
, 1);
118 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_PRESC32_ON
, 0);
120 } else if (frequency
<= 1300000) {
121 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_DIV4SEL
, 1);
122 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_PRESC32_ON
, 1);
124 } else if (frequency
<= 2046000) {
125 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_DIV4SEL
, 0);
126 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_PRESC32_ON
, 0);
129 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_DIV4SEL
, 0);
130 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_PRESC32_ON
, 1);
134 for (rDiv
= 0; rDiv
<= 3; rDiv
++) {
135 pCalc
= (REFCLOCK_kHz
/ 100) / R_DIV(rDiv
);
137 if ((abs((s32
)(pCalc
- pVal
))) < (abs((s32
)(pCalcOpt
- pVal
))))
140 pCalcOpt
= (REFCLOCK_kHz
/ 100) / R_DIV(rDivOpt
);
143 divider
= (frequency
* R_DIV(rDivOpt
) * pVal
) / REFCLOCK_kHz
;
144 divider
= (divider
+ 5) / 10;
146 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_R_DIV
, rDivOpt
);
147 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG1
], TNG1_N_DIV_11_8
, MSB(divider
));
148 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_TNG0
], TNG0_N_DIV_7_0
, LSB(divider
));
150 /* VCO Auto calibration */
151 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_STAT1
], STAT1_CALVCO_STRT
, 1);
153 stv6110x_write_reg(stv6110x
, STV6110x_CTRL1
, stv6110x
->regs
[STV6110x_CTRL1
]);
154 stv6110x_write_reg(stv6110x
, STV6110x_TNG1
, stv6110x
->regs
[STV6110x_TNG1
]);
155 stv6110x_write_reg(stv6110x
, STV6110x_TNG0
, stv6110x
->regs
[STV6110x_TNG0
]);
156 stv6110x_write_reg(stv6110x
, STV6110x_STAT1
, stv6110x
->regs
[STV6110x_STAT1
]);
158 for (i
= 0; i
< TRIALS
; i
++) {
159 stv6110x_read_reg(stv6110x
, STV6110x_STAT1
, &stv6110x
->regs
[STV6110x_STAT1
]);
160 if (!STV6110x_GETFIELD(STAT1_CALVCO_STRT
, stv6110x
->regs
[STV6110x_STAT1
]))
168 static int stv6110x_get_frequency(struct dvb_frontend
*fe
, u32
*frequency
)
170 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
172 stv6110x_read_reg(stv6110x
, STV6110x_TNG1
, &stv6110x
->regs
[STV6110x_TNG1
]);
173 stv6110x_read_reg(stv6110x
, STV6110x_TNG0
, &stv6110x
->regs
[STV6110x_TNG0
]);
175 *frequency
= (MAKEWORD16(STV6110x_GETFIELD(TNG1_N_DIV_11_8
, stv6110x
->regs
[STV6110x_TNG1
]),
176 STV6110x_GETFIELD(TNG0_N_DIV_7_0
, stv6110x
->regs
[STV6110x_TNG0
]))) * REFCLOCK_kHz
;
178 *frequency
/= (1 << (STV6110x_GETFIELD(TNG1_R_DIV
, stv6110x
->regs
[STV6110x_TNG1
]) +
179 STV6110x_GETFIELD(TNG1_DIV4SEL
, stv6110x
->regs
[STV6110x_TNG1
])));
186 static int stv6110x_set_bandwidth(struct dvb_frontend
*fe
, u32 bandwidth
)
188 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
192 halfbw
= bandwidth
>> 1;
194 if (halfbw
> 36000000)
195 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL3
], CTRL3_CF
, 31); /* LPF */
196 else if (halfbw
< 5000000)
197 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL3
], CTRL3_CF
, 0); /* LPF */
199 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL3
], CTRL3_CF
, ((halfbw
/ 1000000) - 5)); /* LPF */
202 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL3
], CTRL3_RCCLK_OFF
, 0x0); /* cal. clk activated */
203 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_STAT1
], STAT1_CALRC_STRT
, 0x1); /* LPF auto cal */
205 stv6110x_write_reg(stv6110x
, STV6110x_CTRL3
, stv6110x
->regs
[STV6110x_CTRL3
]);
206 stv6110x_write_reg(stv6110x
, STV6110x_STAT1
, stv6110x
->regs
[STV6110x_STAT1
]);
208 for (i
= 0; i
< TRIALS
; i
++) {
209 stv6110x_read_reg(stv6110x
, STV6110x_STAT1
, &stv6110x
->regs
[STV6110x_STAT1
]);
210 if (!STV6110x_GETFIELD(STAT1_CALRC_STRT
, stv6110x
->regs
[STV6110x_STAT1
]))
214 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL3
], CTRL3_RCCLK_OFF
, 0x1); /* cal. done */
215 stv6110x_write_reg(stv6110x
, STV6110x_CTRL3
, stv6110x
->regs
[STV6110x_CTRL3
]);
220 static int stv6110x_get_bandwidth(struct dvb_frontend
*fe
, u32
*bandwidth
)
222 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
224 stv6110x_read_reg(stv6110x
, STV6110x_CTRL3
, &stv6110x
->regs
[STV6110x_CTRL3
]);
225 *bandwidth
= (STV6110x_GETFIELD(CTRL3_CF
, stv6110x
->regs
[STV6110x_CTRL3
]) + 5) * 2000000;
230 static int stv6110x_set_refclock(struct dvb_frontend
*fe
, u32 refclock
)
232 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
238 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL2
], CTRL2_CO_DIV
, 0);
241 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL2
], CTRL2_CO_DIV
, 1);
244 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL2
], CTRL2_CO_DIV
, 2);
248 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL2
], CTRL2_CO_DIV
, 3);
251 stv6110x_write_reg(stv6110x
, STV6110x_CTRL2
, stv6110x
->regs
[STV6110x_CTRL2
]);
256 static int stv6110x_get_bbgain(struct dvb_frontend
*fe
, u32
*gain
)
258 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
260 stv6110x_read_reg(stv6110x
, STV6110x_CTRL2
, &stv6110x
->regs
[STV6110x_CTRL2
]);
261 *gain
= 2 * STV6110x_GETFIELD(CTRL2_BBGAIN
, stv6110x
->regs
[STV6110x_CTRL2
]);
266 static int stv6110x_set_bbgain(struct dvb_frontend
*fe
, u32 gain
)
268 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
270 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL2
], CTRL2_BBGAIN
, gain
/ 2);
271 stv6110x_write_reg(stv6110x
, STV6110x_CTRL2
, stv6110x
->regs
[STV6110x_CTRL2
]);
276 static int stv6110x_set_mode(struct dvb_frontend
*fe
, enum tuner_mode mode
)
278 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
283 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL1
], CTRL1_SYN
, 0);
284 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL1
], CTRL1_RX
, 0);
285 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL1
], CTRL1_LPT
, 0);
289 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL1
], CTRL1_SYN
, 1);
290 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL1
], CTRL1_RX
, 1);
291 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL1
], CTRL1_LPT
, 1);
295 ret
= stv6110x_write_reg(stv6110x
, STV6110x_CTRL1
, stv6110x
->regs
[STV6110x_CTRL1
]);
297 dprintk(FE_ERROR
, 1, "I/O Error");
304 static int stv6110x_sleep(struct dvb_frontend
*fe
)
306 return stv6110x_set_mode(fe
, TUNER_SLEEP
);
309 static int stv6110x_get_status(struct dvb_frontend
*fe
, u32
*status
)
311 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
313 stv6110x_read_reg(stv6110x
, STV6110x_STAT1
, &stv6110x
->regs
[STV6110x_STAT1
]);
315 if (STV6110x_GETFIELD(STAT1_LOCK
, stv6110x
->regs
[STV6110x_STAT1
]))
316 *status
= TUNER_PHASELOCKED
;
324 static int stv6110x_release(struct dvb_frontend
*fe
)
326 struct stv6110x_state
*stv6110x
= fe
->tuner_priv
;
328 fe
->tuner_priv
= NULL
;
334 static struct dvb_tuner_ops stv6110x_ops
= {
336 .name
= "STV6110(A) Silicon Tuner",
337 .frequency_min
= 950000,
338 .frequency_max
= 2150000,
342 .init
= stv6110x_init
,
343 .sleep
= stv6110x_sleep
,
344 .release
= stv6110x_release
347 static struct stv6110x_devctl stv6110x_ctl
= {
348 .tuner_init
= stv6110x_init
,
349 .tuner_set_mode
= stv6110x_set_mode
,
350 .tuner_set_frequency
= stv6110x_set_frequency
,
351 .tuner_get_frequency
= stv6110x_get_frequency
,
352 .tuner_set_bandwidth
= stv6110x_set_bandwidth
,
353 .tuner_get_bandwidth
= stv6110x_get_bandwidth
,
354 .tuner_set_bbgain
= stv6110x_set_bbgain
,
355 .tuner_get_bbgain
= stv6110x_get_bbgain
,
356 .tuner_set_refclk
= stv6110x_set_refclock
,
357 .tuner_get_status
= stv6110x_get_status
,
360 struct stv6110x_devctl
*stv6110x_attach(struct dvb_frontend
*fe
,
361 const struct stv6110x_config
*config
,
362 struct i2c_adapter
*i2c
)
364 struct stv6110x_state
*stv6110x
;
365 u8 default_regs
[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
368 stv6110x
= kzalloc(sizeof (struct stv6110x_state
), GFP_KERNEL
);
369 if (stv6110x
== NULL
)
373 stv6110x
->config
= config
;
374 stv6110x
->devctl
= &stv6110x_ctl
;
375 memcpy(stv6110x
->regs
, default_regs
, 8);
378 switch (stv6110x
->config
->clk_div
) {
381 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL2
], CTRL2_CO_DIV
, 0);
384 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL2
], CTRL2_CO_DIV
, 1);
387 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL2
], CTRL2_CO_DIV
, 2);
391 STV6110x_SETFIELD(stv6110x
->regs
[STV6110x_CTRL2
], CTRL2_CO_DIV
, 3);
395 if (fe
->ops
.i2c_gate_ctrl
) {
396 ret
= fe
->ops
.i2c_gate_ctrl(fe
, 1);
401 ret
= stv6110x_write_regs(stv6110x
, 0, stv6110x
->regs
,
402 ARRAY_SIZE(stv6110x
->regs
));
404 dprintk(FE_ERROR
, 1, "Initialization failed");
408 if (fe
->ops
.i2c_gate_ctrl
) {
409 ret
= fe
->ops
.i2c_gate_ctrl(fe
, 0);
414 fe
->tuner_priv
= stv6110x
;
415 fe
->ops
.tuner_ops
= stv6110x_ops
;
417 printk("%s: Attaching STV6110x \n", __func__
);
418 return stv6110x
->devctl
;
424 EXPORT_SYMBOL(stv6110x_attach
);
426 MODULE_AUTHOR("Manu Abraham");
427 MODULE_DESCRIPTION("STV6110x Silicon tuner");
428 MODULE_LICENSE("GPL");