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/string.h>
28 #include "dvb_frontend.h"
30 #include "stv6110x_reg.h"
32 #include "stv6110x_priv.h"
34 static unsigned int verbose;
35 module_param(verbose, int, 0644);
36 MODULE_PARM_DESC(verbose, "Set Verbosity level");
38 static u8 stv6110x_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
40 static int stv6110x_read_reg(struct stv6110x_state *stv6110x, u8 reg, u8 *data)
43 const struct stv6110x_config *config = stv6110x->config;
46 struct i2c_msg msg[] = {
47 { .addr = config->addr, .flags = 0, .buf = b0, .len = 1 },
48 { .addr = config->addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }
51 ret = i2c_transfer(stv6110x->i2c, msg, 2);
53 dprintk(FE_ERROR, 1, "I/O Error");
61 static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data)
64 const struct stv6110x_config *config = stv6110x->config;
65 u8 buf[] = { reg, data };
66 struct i2c_msg msg = { .addr = config->addr, .flags = 0, . buf = buf, .len = 2 };
68 ret = i2c_transfer(stv6110x->i2c, &msg, 1);
70 dprintk(FE_ERROR, 1, "I/O Error");
77 static int stv6110x_init(struct dvb_frontend *fe)
79 struct stv6110x_state *stv6110x = fe->tuner_priv;
83 for (i = 0; i < ARRAY_SIZE(stv6110x_regs); i++) {
84 ret = stv6110x_write_reg(stv6110x, i, stv6110x_regs[i]);
86 dprintk(FE_ERROR, 1, "Initialization failed");
94 static int stv6110x_set_frequency(struct dvb_frontend *fe, u32 frequency)
96 struct stv6110x_state *stv6110x = fe->tuner_priv;
98 s32 pVal, pCalc, rDivOpt = 0, pCalcOpt = 1000;
101 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_K, (REFCLOCK_MHz - 16));
103 if (frequency <= 1023000) {
104 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
105 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
107 } else if (frequency <= 1300000) {
108 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
109 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
111 } else if (frequency <= 2046000) {
112 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
113 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
116 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
117 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
121 for (rDiv = 0; rDiv <= 3; rDiv++) {
122 pCalc = (REFCLOCK_kHz / 100) / R_DIV(rDiv);
124 if ((abs((s32)(pCalc - pVal))) < (abs((s32)(pCalcOpt - pVal))))
127 pCalcOpt = (REFCLOCK_kHz / 100) / R_DIV(rDivOpt);
130 divider = (frequency * R_DIV(rDivOpt) * pVal) / REFCLOCK_kHz;
131 divider = (divider + 5) / 10;
133 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_R_DIV, rDivOpt);
134 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_N_DIV_11_8, MSB(divider));
135 STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG0], TNG0_N_DIV_7_0, LSB(divider));
137 /* VCO Auto calibration */
138 STV6110x_SETFIELD(stv6110x_regs[STV6110x_STAT1], STAT1_CALVCO_STRT, 1);
140 stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x_regs[STV6110x_CTRL1]);
141 stv6110x_write_reg(stv6110x, STV6110x_TNG1, stv6110x_regs[STV6110x_TNG1]);
142 stv6110x_write_reg(stv6110x, STV6110x_TNG0, stv6110x_regs[STV6110x_TNG0]);
143 stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x_regs[STV6110x_STAT1]);
145 for (i = 0; i < TRIALS; i++) {
146 stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x_regs[STV6110x_STAT1]);
147 if (!STV6110x_GETFIELD(STAT1_CALVCO_STRT, stv6110x_regs[STV6110x_STAT1]))
155 static int stv6110x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
157 struct stv6110x_state *stv6110x = fe->tuner_priv;
159 stv6110x_read_reg(stv6110x, STV6110x_TNG1, &stv6110x_regs[STV6110x_TNG1]);
160 stv6110x_read_reg(stv6110x, STV6110x_TNG0, &stv6110x_regs[STV6110x_TNG0]);
162 *frequency = (MAKEWORD16(STV6110x_GETFIELD(TNG1_N_DIV_11_8, stv6110x_regs[STV6110x_TNG1]),
163 STV6110x_GETFIELD(TNG0_N_DIV_7_0, stv6110x_regs[STV6110x_TNG0]))) * REFCLOCK_kHz;
165 *frequency /= (1 << (STV6110x_GETFIELD(TNG1_R_DIV, stv6110x_regs[STV6110x_TNG1]) +
166 STV6110x_GETFIELD(TNG1_DIV4SEL, stv6110x_regs[STV6110x_TNG1])));
173 static int stv6110x_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
175 struct stv6110x_state *stv6110x = fe->tuner_priv;
179 halfbw = bandwidth >> 1;
181 if (halfbw > 36000000)
182 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_CF, 31); /* LPF */
183 else if (halfbw < 5000000)
184 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_CF, 0); /* LPF */
186 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_CF, ((halfbw / 1000000) - 5)); /* LPF */
189 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x0); /* cal. clk activated */
190 STV6110x_SETFIELD(stv6110x_regs[STV6110x_STAT1], STAT1_CALRC_STRT, 0x1); /* LPF auto cal */
192 stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x_regs[STV6110x_CTRL3]);
193 stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x_regs[STV6110x_STAT1]);
195 for (i = 0; i < TRIALS; i++) {
196 stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x_regs[STV6110x_STAT1]);
197 if (!STV6110x_GETFIELD(STAT1_CALRC_STRT, stv6110x_regs[STV6110x_STAT1]))
201 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x1); /* cal. done */
202 stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x_regs[STV6110x_CTRL3]);
207 static int stv6110x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
209 struct stv6110x_state *stv6110x = fe->tuner_priv;
211 stv6110x_read_reg(stv6110x, STV6110x_CTRL3, &stv6110x_regs[STV6110x_CTRL3]);
212 *bandwidth = (STV6110x_GETFIELD(CTRL3_CF, stv6110x_regs[STV6110x_CTRL3]) + 5) * 2000000;
217 static int stv6110x_set_refclock(struct dvb_frontend *fe, u32 refclock)
219 struct stv6110x_state *stv6110x = fe->tuner_priv;
225 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
228 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
231 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
235 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
238 stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x_regs[STV6110x_CTRL2]);
243 static int stv6110x_get_bbgain(struct dvb_frontend *fe, u32 *gain)
245 struct stv6110x_state *stv6110x = fe->tuner_priv;
247 stv6110x_read_reg(stv6110x, STV6110x_CTRL2, &stv6110x_regs[STV6110x_CTRL2]);
248 *gain = 2 * STV6110x_GETFIELD(CTRL2_BBGAIN, stv6110x_regs[STV6110x_CTRL2]);
253 static int stv6110x_set_bbgain(struct dvb_frontend *fe, u32 gain)
255 struct stv6110x_state *stv6110x = fe->tuner_priv;
257 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_BBGAIN, gain / 2);
258 stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x_regs[STV6110x_CTRL2]);
263 static int stv6110x_set_mode(struct dvb_frontend *fe, enum tuner_mode mode)
265 struct stv6110x_state *stv6110x = fe->tuner_priv;
270 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_SYN, 0);
271 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_RX, 0);
272 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_LPT, 0);
276 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_SYN, 1);
277 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_RX, 1);
278 STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_LPT, 1);
282 ret = stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x_regs[STV6110x_CTRL1]);
284 dprintk(FE_ERROR, 1, "I/O Error");
291 static int stv6110x_sleep(struct dvb_frontend *fe)
293 return stv6110x_set_mode(fe, TUNER_SLEEP);
296 static int stv6110x_get_status(struct dvb_frontend *fe, u32 *status)
298 struct stv6110x_state *stv6110x = fe->tuner_priv;
300 stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x_regs[STV6110x_STAT1]);
302 if (STV6110x_GETFIELD(STAT1_LOCK, stv6110x_regs[STV6110x_STAT1]))
303 *status = TUNER_PHASELOCKED;
311 static int stv6110x_release(struct dvb_frontend *fe)
313 struct stv6110x_state *stv6110x = fe->tuner_priv;
315 fe->tuner_priv = NULL;
321 static struct dvb_tuner_ops stv6110x_ops = {
323 .name = "STV6110(A) Silicon Tuner",
324 .frequency_min = 950000,
325 .frequency_max = 2150000,
329 .init = stv6110x_init,
330 .sleep = stv6110x_sleep,
331 .release = stv6110x_release
334 static struct stv6110x_devctl stv6110x_ctl = {
335 .tuner_init = stv6110x_init,
336 .tuner_set_mode = stv6110x_set_mode,
337 .tuner_set_frequency = stv6110x_set_frequency,
338 .tuner_get_frequency = stv6110x_get_frequency,
339 .tuner_set_bandwidth = stv6110x_set_bandwidth,
340 .tuner_get_bandwidth = stv6110x_get_bandwidth,
341 .tuner_set_bbgain = stv6110x_set_bbgain,
342 .tuner_get_bbgain = stv6110x_get_bbgain,
343 .tuner_set_refclk = stv6110x_set_refclock,
344 .tuner_get_status = stv6110x_get_status,
347 struct stv6110x_devctl *stv6110x_attach(struct dvb_frontend *fe,
348 const struct stv6110x_config *config,
349 struct i2c_adapter *i2c)
351 struct stv6110x_state *stv6110x;
353 stv6110x = kzalloc(sizeof (struct stv6110x_state), GFP_KERNEL);
354 if (stv6110x == NULL)
358 stv6110x->config = config;
359 stv6110x->devctl = &stv6110x_ctl;
361 fe->tuner_priv = stv6110x;
362 fe->ops.tuner_ops = stv6110x_ops;
364 printk("%s: Attaching STV6110x \n", __func__);
365 return stv6110x->devctl;
371 EXPORT_SYMBOL(stv6110x_attach);
373 MODULE_AUTHOR("Manu Abraham");
374 MODULE_DESCRIPTION("STV6110x Silicon tuner");
375 MODULE_LICENSE("GPL");