1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
2ccae7af2SMauro Carvalho Chehab /*
3ccae7af2SMauro Carvalho Chehab * Driver for Microtune MT2060 "Single chip dual conversion broadband tuner"
4ccae7af2SMauro Carvalho Chehab *
5ccae7af2SMauro Carvalho Chehab * Copyright (c) 2006 Olivier DANET <odanet@caramail.com>
6ccae7af2SMauro Carvalho Chehab */
7ccae7af2SMauro Carvalho Chehab
8ccae7af2SMauro Carvalho Chehab /* In that file, frequencies are expressed in kiloHertz to avoid 32 bits overflows */
9ccae7af2SMauro Carvalho Chehab
10ccae7af2SMauro Carvalho Chehab #include <linux/module.h>
11ccae7af2SMauro Carvalho Chehab #include <linux/delay.h>
12ccae7af2SMauro Carvalho Chehab #include <linux/dvb/frontend.h>
13ccae7af2SMauro Carvalho Chehab #include <linux/i2c.h>
14ccae7af2SMauro Carvalho Chehab #include <linux/slab.h>
15ccae7af2SMauro Carvalho Chehab
16fada1935SMauro Carvalho Chehab #include <media/dvb_frontend.h>
17ccae7af2SMauro Carvalho Chehab
18ccae7af2SMauro Carvalho Chehab #include "mt2060.h"
19ccae7af2SMauro Carvalho Chehab #include "mt2060_priv.h"
20ccae7af2SMauro Carvalho Chehab
21ccae7af2SMauro Carvalho Chehab static int debug;
22ccae7af2SMauro Carvalho Chehab module_param(debug, int, 0644);
23ccae7af2SMauro Carvalho Chehab MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
24ccae7af2SMauro Carvalho Chehab
25ccae7af2SMauro Carvalho Chehab #define dprintk(args...) do { if (debug) {printk(KERN_DEBUG "MT2060: " args); printk("\n"); }} while (0)
26ccae7af2SMauro Carvalho Chehab
27ccae7af2SMauro Carvalho Chehab // Reads a single register
mt2060_readreg(struct mt2060_priv * priv,u8 reg,u8 * val)28ccae7af2SMauro Carvalho Chehab static int mt2060_readreg(struct mt2060_priv *priv, u8 reg, u8 *val)
29ccae7af2SMauro Carvalho Chehab {
30ccae7af2SMauro Carvalho Chehab struct i2c_msg msg[2] = {
31b4756707SSean Young { .addr = priv->cfg->i2c_address, .flags = 0, .len = 1 },
32b4756707SSean Young { .addr = priv->cfg->i2c_address, .flags = I2C_M_RD, .len = 1 },
33ccae7af2SMauro Carvalho Chehab };
34b4756707SSean Young int rc = 0;
35b4756707SSean Young u8 *b;
36b4756707SSean Young
37b4756707SSean Young b = kmalloc(2, GFP_KERNEL);
38b4756707SSean Young if (!b)
39b4756707SSean Young return -ENOMEM;
40b4756707SSean Young
41b4756707SSean Young b[0] = reg;
42b4756707SSean Young b[1] = 0;
43b4756707SSean Young
44b4756707SSean Young msg[0].buf = b;
45b4756707SSean Young msg[1].buf = b + 1;
46ccae7af2SMauro Carvalho Chehab
47ccae7af2SMauro Carvalho Chehab if (i2c_transfer(priv->i2c, msg, 2) != 2) {
48ccae7af2SMauro Carvalho Chehab printk(KERN_WARNING "mt2060 I2C read failed\n");
49b4756707SSean Young rc = -EREMOTEIO;
50ccae7af2SMauro Carvalho Chehab }
51b4756707SSean Young *val = b[1];
52b4756707SSean Young kfree(b);
53b4756707SSean Young
54b4756707SSean Young return rc;
55ccae7af2SMauro Carvalho Chehab }
56ccae7af2SMauro Carvalho Chehab
57ccae7af2SMauro Carvalho Chehab // Writes a single register
mt2060_writereg(struct mt2060_priv * priv,u8 reg,u8 val)58ccae7af2SMauro Carvalho Chehab static int mt2060_writereg(struct mt2060_priv *priv, u8 reg, u8 val)
59ccae7af2SMauro Carvalho Chehab {
60ccae7af2SMauro Carvalho Chehab struct i2c_msg msg = {
61b4756707SSean Young .addr = priv->cfg->i2c_address, .flags = 0, .len = 2
62ccae7af2SMauro Carvalho Chehab };
63b4756707SSean Young u8 *buf;
64b4756707SSean Young int rc = 0;
65b4756707SSean Young
66b4756707SSean Young buf = kmalloc(2, GFP_KERNEL);
67b4756707SSean Young if (!buf)
68b4756707SSean Young return -ENOMEM;
69b4756707SSean Young
70b4756707SSean Young buf[0] = reg;
71b4756707SSean Young buf[1] = val;
72b4756707SSean Young
73b4756707SSean Young msg.buf = buf;
74ccae7af2SMauro Carvalho Chehab
75ccae7af2SMauro Carvalho Chehab if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
76ccae7af2SMauro Carvalho Chehab printk(KERN_WARNING "mt2060 I2C write failed\n");
77b4756707SSean Young rc = -EREMOTEIO;
78ccae7af2SMauro Carvalho Chehab }
79b4756707SSean Young kfree(buf);
80b4756707SSean Young return rc;
81ccae7af2SMauro Carvalho Chehab }
82ccae7af2SMauro Carvalho Chehab
83ccae7af2SMauro Carvalho Chehab // Writes a set of consecutive registers
mt2060_writeregs(struct mt2060_priv * priv,u8 * buf,u8 len)84ccae7af2SMauro Carvalho Chehab static int mt2060_writeregs(struct mt2060_priv *priv,u8 *buf, u8 len)
85ccae7af2SMauro Carvalho Chehab {
86433c4864SAntti Palosaari int rem, val_len;
87b4756707SSean Young u8 *xfer_buf;
88b4756707SSean Young int rc = 0;
89ccae7af2SMauro Carvalho Chehab struct i2c_msg msg = {
90b4756707SSean Young .addr = priv->cfg->i2c_address, .flags = 0
91ccae7af2SMauro Carvalho Chehab };
92433c4864SAntti Palosaari
93b4756707SSean Young xfer_buf = kmalloc(16, GFP_KERNEL);
94b4756707SSean Young if (!xfer_buf)
95b4756707SSean Young return -ENOMEM;
96b4756707SSean Young
97b4756707SSean Young msg.buf = xfer_buf;
98b4756707SSean Young
99433c4864SAntti Palosaari for (rem = len - 1; rem > 0; rem -= priv->i2c_max_regs) {
100433c4864SAntti Palosaari val_len = min_t(int, rem, priv->i2c_max_regs);
101433c4864SAntti Palosaari msg.len = 1 + val_len;
102433c4864SAntti Palosaari xfer_buf[0] = buf[0] + len - 1 - rem;
103433c4864SAntti Palosaari memcpy(&xfer_buf[1], &buf[1 + len - 1 - rem], val_len);
104433c4864SAntti Palosaari
105ccae7af2SMauro Carvalho Chehab if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
106433c4864SAntti Palosaari printk(KERN_WARNING "mt2060 I2C write failed (len=%i)\n", val_len);
107b4756707SSean Young rc = -EREMOTEIO;
108b4756707SSean Young break;
109ccae7af2SMauro Carvalho Chehab }
110433c4864SAntti Palosaari }
111433c4864SAntti Palosaari
112b4756707SSean Young kfree(xfer_buf);
113b4756707SSean Young return rc;
114ccae7af2SMauro Carvalho Chehab }
115ccae7af2SMauro Carvalho Chehab
116ccae7af2SMauro Carvalho Chehab // Initialisation sequences
117ccae7af2SMauro Carvalho Chehab // LNABAND=3, NUM1=0x3C, DIV1=0x74, NUM2=0x1080, DIV2=0x49
118ccae7af2SMauro Carvalho Chehab static u8 mt2060_config1[] = {
119ccae7af2SMauro Carvalho Chehab REG_LO1C1,
120ccae7af2SMauro Carvalho Chehab 0x3F, 0x74, 0x00, 0x08, 0x93
121ccae7af2SMauro Carvalho Chehab };
122ccae7af2SMauro Carvalho Chehab
123ccae7af2SMauro Carvalho Chehab // FMCG=2, GP2=0, GP1=0
124ccae7af2SMauro Carvalho Chehab static u8 mt2060_config2[] = {
125ccae7af2SMauro Carvalho Chehab REG_MISC_CTRL,
126ccae7af2SMauro Carvalho Chehab 0x20, 0x1E, 0x30, 0xff, 0x80, 0xff, 0x00, 0x2c, 0x42
127ccae7af2SMauro Carvalho Chehab };
128ccae7af2SMauro Carvalho Chehab
129ccae7af2SMauro Carvalho Chehab // VGAG=3, V1CSE=1
130ccae7af2SMauro Carvalho Chehab
131ccae7af2SMauro Carvalho Chehab #ifdef MT2060_SPURCHECK
132ccae7af2SMauro Carvalho Chehab /* The function below calculates the frequency offset between the output frequency if2
133ccae7af2SMauro Carvalho Chehab and the closer cross modulation subcarrier between lo1 and lo2 up to the tenth harmonic */
mt2060_spurcalc(u32 lo1,u32 lo2,u32 if2)134ccae7af2SMauro Carvalho Chehab static int mt2060_spurcalc(u32 lo1,u32 lo2,u32 if2)
135ccae7af2SMauro Carvalho Chehab {
136ccae7af2SMauro Carvalho Chehab int I,J;
137ccae7af2SMauro Carvalho Chehab int dia,diamin,diff;
138ccae7af2SMauro Carvalho Chehab diamin=1000000;
139ccae7af2SMauro Carvalho Chehab for (I = 1; I < 10; I++) {
140ccae7af2SMauro Carvalho Chehab J = ((2*I*lo1)/lo2+1)/2;
141ccae7af2SMauro Carvalho Chehab diff = I*(int)lo1-J*(int)lo2;
142ccae7af2SMauro Carvalho Chehab if (diff < 0) diff=-diff;
143ccae7af2SMauro Carvalho Chehab dia = (diff-(int)if2);
144ccae7af2SMauro Carvalho Chehab if (dia < 0) dia=-dia;
145ccae7af2SMauro Carvalho Chehab if (diamin > dia) diamin=dia;
146ccae7af2SMauro Carvalho Chehab }
147ccae7af2SMauro Carvalho Chehab return diamin;
148ccae7af2SMauro Carvalho Chehab }
149ccae7af2SMauro Carvalho Chehab
150ccae7af2SMauro Carvalho Chehab #define BANDWIDTH 4000 // kHz
151ccae7af2SMauro Carvalho Chehab
152ccae7af2SMauro Carvalho Chehab /* Calculates the frequency offset to add to avoid spurs. Returns 0 if no offset is needed */
mt2060_spurcheck(u32 lo1,u32 lo2,u32 if2)153ccae7af2SMauro Carvalho Chehab static int mt2060_spurcheck(u32 lo1,u32 lo2,u32 if2)
154ccae7af2SMauro Carvalho Chehab {
155ccae7af2SMauro Carvalho Chehab u32 Spur,Sp1,Sp2;
156ccae7af2SMauro Carvalho Chehab int I,J;
157ccae7af2SMauro Carvalho Chehab I=0;
158ccae7af2SMauro Carvalho Chehab J=1000;
159ccae7af2SMauro Carvalho Chehab
160ccae7af2SMauro Carvalho Chehab Spur=mt2060_spurcalc(lo1,lo2,if2);
161ccae7af2SMauro Carvalho Chehab if (Spur < BANDWIDTH) {
162ccae7af2SMauro Carvalho Chehab /* Potential spurs detected */
163ccae7af2SMauro Carvalho Chehab dprintk("Spurs before : f_lo1: %d f_lo2: %d (kHz)",
164ccae7af2SMauro Carvalho Chehab (int)lo1,(int)lo2);
165ccae7af2SMauro Carvalho Chehab I=1000;
166ccae7af2SMauro Carvalho Chehab Sp1 = mt2060_spurcalc(lo1+I,lo2+I,if2);
167ccae7af2SMauro Carvalho Chehab Sp2 = mt2060_spurcalc(lo1-I,lo2-I,if2);
168ccae7af2SMauro Carvalho Chehab
169ccae7af2SMauro Carvalho Chehab if (Sp1 < Sp2) {
170ccae7af2SMauro Carvalho Chehab J=-J; I=-I; Spur=Sp2;
171ccae7af2SMauro Carvalho Chehab } else
172ccae7af2SMauro Carvalho Chehab Spur=Sp1;
173ccae7af2SMauro Carvalho Chehab
174ccae7af2SMauro Carvalho Chehab while (Spur < BANDWIDTH) {
175ccae7af2SMauro Carvalho Chehab I += J;
176ccae7af2SMauro Carvalho Chehab Spur = mt2060_spurcalc(lo1+I,lo2+I,if2);
177ccae7af2SMauro Carvalho Chehab }
178ccae7af2SMauro Carvalho Chehab dprintk("Spurs after : f_lo1: %d f_lo2: %d (kHz)",
179ccae7af2SMauro Carvalho Chehab (int)(lo1+I),(int)(lo2+I));
180ccae7af2SMauro Carvalho Chehab }
181ccae7af2SMauro Carvalho Chehab return I;
182ccae7af2SMauro Carvalho Chehab }
183ccae7af2SMauro Carvalho Chehab #endif
184ccae7af2SMauro Carvalho Chehab
185ccae7af2SMauro Carvalho Chehab #define IF2 36150 // IF2 frequency = 36.150 MHz
186ccae7af2SMauro Carvalho Chehab #define FREF 16000 // Quartz oscillator 16 MHz
187ccae7af2SMauro Carvalho Chehab
mt2060_set_params(struct dvb_frontend * fe)188ccae7af2SMauro Carvalho Chehab static int mt2060_set_params(struct dvb_frontend *fe)
189ccae7af2SMauro Carvalho Chehab {
190ccae7af2SMauro Carvalho Chehab struct dtv_frontend_properties *c = &fe->dtv_property_cache;
191ccae7af2SMauro Carvalho Chehab struct mt2060_priv *priv;
192ccae7af2SMauro Carvalho Chehab int i=0;
193ccae7af2SMauro Carvalho Chehab u32 freq;
194ccae7af2SMauro Carvalho Chehab u8 lnaband;
195ccae7af2SMauro Carvalho Chehab u32 f_lo1,f_lo2;
196ccae7af2SMauro Carvalho Chehab u32 div1,num1,div2,num2;
197ccae7af2SMauro Carvalho Chehab u8 b[8];
198ccae7af2SMauro Carvalho Chehab u32 if1;
199ccae7af2SMauro Carvalho Chehab
200ccae7af2SMauro Carvalho Chehab priv = fe->tuner_priv;
201ccae7af2SMauro Carvalho Chehab
202ccae7af2SMauro Carvalho Chehab if1 = priv->if1_freq;
203ccae7af2SMauro Carvalho Chehab b[0] = REG_LO1B1;
204ccae7af2SMauro Carvalho Chehab b[1] = 0xFF;
205ccae7af2SMauro Carvalho Chehab
206ccae7af2SMauro Carvalho Chehab if (fe->ops.i2c_gate_ctrl)
207ccae7af2SMauro Carvalho Chehab fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
208ccae7af2SMauro Carvalho Chehab
209ccae7af2SMauro Carvalho Chehab mt2060_writeregs(priv,b,2);
210ccae7af2SMauro Carvalho Chehab
211ccae7af2SMauro Carvalho Chehab freq = c->frequency / 1000; /* Hz -> kHz */
212ccae7af2SMauro Carvalho Chehab
213ccae7af2SMauro Carvalho Chehab f_lo1 = freq + if1 * 1000;
214ccae7af2SMauro Carvalho Chehab f_lo1 = (f_lo1 / 250) * 250;
215ccae7af2SMauro Carvalho Chehab f_lo2 = f_lo1 - freq - IF2;
216ccae7af2SMauro Carvalho Chehab // From the Comtech datasheet, the step used is 50kHz. The tuner chip could be more precise
217ccae7af2SMauro Carvalho Chehab f_lo2 = ((f_lo2 + 25) / 50) * 50;
218ef0d21e4SJulia Lawall priv->frequency = (f_lo1 - f_lo2 - IF2) * 1000;
219ccae7af2SMauro Carvalho Chehab
220ccae7af2SMauro Carvalho Chehab #ifdef MT2060_SPURCHECK
221ccae7af2SMauro Carvalho Chehab // LO-related spurs detection and correction
222ccae7af2SMauro Carvalho Chehab num1 = mt2060_spurcheck(f_lo1,f_lo2,IF2);
223ccae7af2SMauro Carvalho Chehab f_lo1 += num1;
224ccae7af2SMauro Carvalho Chehab f_lo2 += num1;
225ccae7af2SMauro Carvalho Chehab #endif
226ccae7af2SMauro Carvalho Chehab //Frequency LO1 = 16MHz * (DIV1 + NUM1/64 )
227ccae7af2SMauro Carvalho Chehab num1 = f_lo1 / (FREF / 64);
228ccae7af2SMauro Carvalho Chehab div1 = num1 / 64;
229ccae7af2SMauro Carvalho Chehab num1 &= 0x3f;
230ccae7af2SMauro Carvalho Chehab
231ccae7af2SMauro Carvalho Chehab // Frequency LO2 = 16MHz * (DIV2 + NUM2/8192 )
232ccae7af2SMauro Carvalho Chehab num2 = f_lo2 * 64 / (FREF / 128);
233ccae7af2SMauro Carvalho Chehab div2 = num2 / 8192;
234ccae7af2SMauro Carvalho Chehab num2 &= 0x1fff;
235ccae7af2SMauro Carvalho Chehab
236ccae7af2SMauro Carvalho Chehab if (freq <= 95000) lnaband = 0xB0; else
237ccae7af2SMauro Carvalho Chehab if (freq <= 180000) lnaband = 0xA0; else
238ccae7af2SMauro Carvalho Chehab if (freq <= 260000) lnaband = 0x90; else
239ccae7af2SMauro Carvalho Chehab if (freq <= 335000) lnaband = 0x80; else
240ccae7af2SMauro Carvalho Chehab if (freq <= 425000) lnaband = 0x70; else
241ccae7af2SMauro Carvalho Chehab if (freq <= 480000) lnaband = 0x60; else
242ccae7af2SMauro Carvalho Chehab if (freq <= 570000) lnaband = 0x50; else
243ccae7af2SMauro Carvalho Chehab if (freq <= 645000) lnaband = 0x40; else
244ccae7af2SMauro Carvalho Chehab if (freq <= 730000) lnaband = 0x30; else
245ccae7af2SMauro Carvalho Chehab if (freq <= 810000) lnaband = 0x20; else lnaband = 0x10;
246ccae7af2SMauro Carvalho Chehab
247ccae7af2SMauro Carvalho Chehab b[0] = REG_LO1C1;
248ccae7af2SMauro Carvalho Chehab b[1] = lnaband | ((num1 >>2) & 0x0F);
249ccae7af2SMauro Carvalho Chehab b[2] = div1;
250ccae7af2SMauro Carvalho Chehab b[3] = (num2 & 0x0F) | ((num1 & 3) << 4);
251ccae7af2SMauro Carvalho Chehab b[4] = num2 >> 4;
252ccae7af2SMauro Carvalho Chehab b[5] = ((num2 >>12) & 1) | (div2 << 1);
253ccae7af2SMauro Carvalho Chehab
254ccae7af2SMauro Carvalho Chehab dprintk("IF1: %dMHz",(int)if1);
255ccae7af2SMauro Carvalho Chehab dprintk("PLL freq=%dkHz f_lo1=%dkHz f_lo2=%dkHz",(int)freq,(int)f_lo1,(int)f_lo2);
256ccae7af2SMauro Carvalho Chehab dprintk("PLL div1=%d num1=%d div2=%d num2=%d",(int)div1,(int)num1,(int)div2,(int)num2);
257ccae7af2SMauro Carvalho Chehab dprintk("PLL [1..5]: %2x %2x %2x %2x %2x",(int)b[1],(int)b[2],(int)b[3],(int)b[4],(int)b[5]);
258ccae7af2SMauro Carvalho Chehab
259ccae7af2SMauro Carvalho Chehab mt2060_writeregs(priv,b,6);
260ccae7af2SMauro Carvalho Chehab
261ccae7af2SMauro Carvalho Chehab //Waits for pll lock or timeout
262ccae7af2SMauro Carvalho Chehab i = 0;
263ccae7af2SMauro Carvalho Chehab do {
264ccae7af2SMauro Carvalho Chehab mt2060_readreg(priv,REG_LO_STATUS,b);
265ccae7af2SMauro Carvalho Chehab if ((b[0] & 0x88)==0x88)
266ccae7af2SMauro Carvalho Chehab break;
267ccae7af2SMauro Carvalho Chehab msleep(4);
268ccae7af2SMauro Carvalho Chehab i++;
269ccae7af2SMauro Carvalho Chehab } while (i<10);
270ccae7af2SMauro Carvalho Chehab
271ccae7af2SMauro Carvalho Chehab if (fe->ops.i2c_gate_ctrl)
272ccae7af2SMauro Carvalho Chehab fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
273ccae7af2SMauro Carvalho Chehab
2744539fc5cSMauro Carvalho Chehab return 0;
275ccae7af2SMauro Carvalho Chehab }
276ccae7af2SMauro Carvalho Chehab
mt2060_calibrate(struct mt2060_priv * priv)277ccae7af2SMauro Carvalho Chehab static void mt2060_calibrate(struct mt2060_priv *priv)
278ccae7af2SMauro Carvalho Chehab {
279ccae7af2SMauro Carvalho Chehab u8 b = 0;
280ccae7af2SMauro Carvalho Chehab int i = 0;
281ccae7af2SMauro Carvalho Chehab
282ccae7af2SMauro Carvalho Chehab if (mt2060_writeregs(priv,mt2060_config1,sizeof(mt2060_config1)))
283ccae7af2SMauro Carvalho Chehab return;
284ccae7af2SMauro Carvalho Chehab if (mt2060_writeregs(priv,mt2060_config2,sizeof(mt2060_config2)))
285ccae7af2SMauro Carvalho Chehab return;
286ccae7af2SMauro Carvalho Chehab
287ccae7af2SMauro Carvalho Chehab /* initialize the clock output */
288ccae7af2SMauro Carvalho Chehab mt2060_writereg(priv, REG_VGAG, (priv->cfg->clock_out << 6) | 0x30);
289ccae7af2SMauro Carvalho Chehab
290ccae7af2SMauro Carvalho Chehab do {
291ccae7af2SMauro Carvalho Chehab b |= (1 << 6); // FM1SS;
292ccae7af2SMauro Carvalho Chehab mt2060_writereg(priv, REG_LO2C1,b);
293ccae7af2SMauro Carvalho Chehab msleep(20);
294ccae7af2SMauro Carvalho Chehab
295ccae7af2SMauro Carvalho Chehab if (i == 0) {
296ccae7af2SMauro Carvalho Chehab b |= (1 << 7); // FM1CA;
297ccae7af2SMauro Carvalho Chehab mt2060_writereg(priv, REG_LO2C1,b);
298ccae7af2SMauro Carvalho Chehab b &= ~(1 << 7); // FM1CA;
299ccae7af2SMauro Carvalho Chehab msleep(20);
300ccae7af2SMauro Carvalho Chehab }
301ccae7af2SMauro Carvalho Chehab
302ccae7af2SMauro Carvalho Chehab b &= ~(1 << 6); // FM1SS
303ccae7af2SMauro Carvalho Chehab mt2060_writereg(priv, REG_LO2C1,b);
304ccae7af2SMauro Carvalho Chehab
305ccae7af2SMauro Carvalho Chehab msleep(20);
306ccae7af2SMauro Carvalho Chehab i++;
307ccae7af2SMauro Carvalho Chehab } while (i < 9);
308ccae7af2SMauro Carvalho Chehab
309ccae7af2SMauro Carvalho Chehab i = 0;
310ccae7af2SMauro Carvalho Chehab while (i++ < 10 && mt2060_readreg(priv, REG_MISC_STAT, &b) == 0 && (b & (1 << 6)) == 0)
311ccae7af2SMauro Carvalho Chehab msleep(20);
312ccae7af2SMauro Carvalho Chehab
313ccae7af2SMauro Carvalho Chehab if (i <= 10) {
314ccae7af2SMauro Carvalho Chehab mt2060_readreg(priv, REG_FM_FREQ, &priv->fmfreq); // now find out, what is fmreq used for :)
315ccae7af2SMauro Carvalho Chehab dprintk("calibration was successful: %d", (int)priv->fmfreq);
316ccae7af2SMauro Carvalho Chehab } else
317ccae7af2SMauro Carvalho Chehab dprintk("FMCAL timed out");
318ccae7af2SMauro Carvalho Chehab }
319ccae7af2SMauro Carvalho Chehab
mt2060_get_frequency(struct dvb_frontend * fe,u32 * frequency)320ccae7af2SMauro Carvalho Chehab static int mt2060_get_frequency(struct dvb_frontend *fe, u32 *frequency)
321ccae7af2SMauro Carvalho Chehab {
322ccae7af2SMauro Carvalho Chehab struct mt2060_priv *priv = fe->tuner_priv;
323ccae7af2SMauro Carvalho Chehab *frequency = priv->frequency;
324ccae7af2SMauro Carvalho Chehab return 0;
325ccae7af2SMauro Carvalho Chehab }
326ccae7af2SMauro Carvalho Chehab
mt2060_get_if_frequency(struct dvb_frontend * fe,u32 * frequency)327ccae7af2SMauro Carvalho Chehab static int mt2060_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
328ccae7af2SMauro Carvalho Chehab {
329ccae7af2SMauro Carvalho Chehab *frequency = IF2 * 1000;
330ccae7af2SMauro Carvalho Chehab return 0;
331ccae7af2SMauro Carvalho Chehab }
332ccae7af2SMauro Carvalho Chehab
mt2060_init(struct dvb_frontend * fe)333ccae7af2SMauro Carvalho Chehab static int mt2060_init(struct dvb_frontend *fe)
334ccae7af2SMauro Carvalho Chehab {
335ccae7af2SMauro Carvalho Chehab struct mt2060_priv *priv = fe->tuner_priv;
336ccae7af2SMauro Carvalho Chehab int ret;
337ccae7af2SMauro Carvalho Chehab
338ccae7af2SMauro Carvalho Chehab if (fe->ops.i2c_gate_ctrl)
339ccae7af2SMauro Carvalho Chehab fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
340ccae7af2SMauro Carvalho Chehab
341e11415c8SAntti Palosaari if (priv->sleep) {
342e11415c8SAntti Palosaari ret = mt2060_writereg(priv, REG_MISC_CTRL, 0x20);
343e11415c8SAntti Palosaari if (ret)
344e11415c8SAntti Palosaari goto err_i2c_gate_ctrl;
345e11415c8SAntti Palosaari }
346e11415c8SAntti Palosaari
347ccae7af2SMauro Carvalho Chehab ret = mt2060_writereg(priv, REG_VGAG,
348ccae7af2SMauro Carvalho Chehab (priv->cfg->clock_out << 6) | 0x33);
349ccae7af2SMauro Carvalho Chehab
350e11415c8SAntti Palosaari err_i2c_gate_ctrl:
351ccae7af2SMauro Carvalho Chehab if (fe->ops.i2c_gate_ctrl)
352ccae7af2SMauro Carvalho Chehab fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
353ccae7af2SMauro Carvalho Chehab
354ccae7af2SMauro Carvalho Chehab return ret;
355ccae7af2SMauro Carvalho Chehab }
356ccae7af2SMauro Carvalho Chehab
mt2060_sleep(struct dvb_frontend * fe)357ccae7af2SMauro Carvalho Chehab static int mt2060_sleep(struct dvb_frontend *fe)
358ccae7af2SMauro Carvalho Chehab {
359ccae7af2SMauro Carvalho Chehab struct mt2060_priv *priv = fe->tuner_priv;
360ccae7af2SMauro Carvalho Chehab int ret;
361ccae7af2SMauro Carvalho Chehab
362ccae7af2SMauro Carvalho Chehab if (fe->ops.i2c_gate_ctrl)
363ccae7af2SMauro Carvalho Chehab fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
364ccae7af2SMauro Carvalho Chehab
365ccae7af2SMauro Carvalho Chehab ret = mt2060_writereg(priv, REG_VGAG,
366ccae7af2SMauro Carvalho Chehab (priv->cfg->clock_out << 6) | 0x30);
367e11415c8SAntti Palosaari if (ret)
368e11415c8SAntti Palosaari goto err_i2c_gate_ctrl;
369ccae7af2SMauro Carvalho Chehab
370e11415c8SAntti Palosaari if (priv->sleep)
371e11415c8SAntti Palosaari ret = mt2060_writereg(priv, REG_MISC_CTRL, 0xe8);
372e11415c8SAntti Palosaari
373e11415c8SAntti Palosaari err_i2c_gate_ctrl:
374ccae7af2SMauro Carvalho Chehab if (fe->ops.i2c_gate_ctrl)
375ccae7af2SMauro Carvalho Chehab fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
376ccae7af2SMauro Carvalho Chehab
377ccae7af2SMauro Carvalho Chehab return ret;
378ccae7af2SMauro Carvalho Chehab }
379ccae7af2SMauro Carvalho Chehab
mt2060_release(struct dvb_frontend * fe)380f2709c20SMauro Carvalho Chehab static void mt2060_release(struct dvb_frontend *fe)
381f2709c20SMauro Carvalho Chehab {
382f2709c20SMauro Carvalho Chehab kfree(fe->tuner_priv);
383f2709c20SMauro Carvalho Chehab fe->tuner_priv = NULL;
384f2709c20SMauro Carvalho Chehab }
385f2709c20SMauro Carvalho Chehab
386ccae7af2SMauro Carvalho Chehab static const struct dvb_tuner_ops mt2060_tuner_ops = {
387ccae7af2SMauro Carvalho Chehab .info = {
388ccae7af2SMauro Carvalho Chehab .name = "Microtune MT2060",
389a3f90c75SMauro Carvalho Chehab .frequency_min_hz = 48 * MHz,
390a3f90c75SMauro Carvalho Chehab .frequency_max_hz = 860 * MHz,
391a3f90c75SMauro Carvalho Chehab .frequency_step_hz = 50 * kHz,
392ccae7af2SMauro Carvalho Chehab },
393ccae7af2SMauro Carvalho Chehab
394f2709c20SMauro Carvalho Chehab .release = mt2060_release,
395ccae7af2SMauro Carvalho Chehab
396ccae7af2SMauro Carvalho Chehab .init = mt2060_init,
397ccae7af2SMauro Carvalho Chehab .sleep = mt2060_sleep,
398ccae7af2SMauro Carvalho Chehab
399ccae7af2SMauro Carvalho Chehab .set_params = mt2060_set_params,
400ccae7af2SMauro Carvalho Chehab .get_frequency = mt2060_get_frequency,
401ccae7af2SMauro Carvalho Chehab .get_if_frequency = mt2060_get_if_frequency,
402ccae7af2SMauro Carvalho Chehab };
403ccae7af2SMauro Carvalho Chehab
404ccae7af2SMauro Carvalho Chehab /* This functions tries to identify a MT2060 tuner by reading the PART/REV register. This is hasty. */
mt2060_attach(struct dvb_frontend * fe,struct i2c_adapter * i2c,struct mt2060_config * cfg,u16 if1)405ccae7af2SMauro Carvalho Chehab struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2060_config *cfg, u16 if1)
406ccae7af2SMauro Carvalho Chehab {
407ccae7af2SMauro Carvalho Chehab struct mt2060_priv *priv = NULL;
408ccae7af2SMauro Carvalho Chehab u8 id = 0;
409ccae7af2SMauro Carvalho Chehab
410ccae7af2SMauro Carvalho Chehab priv = kzalloc(sizeof(struct mt2060_priv), GFP_KERNEL);
411ccae7af2SMauro Carvalho Chehab if (priv == NULL)
412ccae7af2SMauro Carvalho Chehab return NULL;
413ccae7af2SMauro Carvalho Chehab
414ccae7af2SMauro Carvalho Chehab priv->cfg = cfg;
415ccae7af2SMauro Carvalho Chehab priv->i2c = i2c;
416ccae7af2SMauro Carvalho Chehab priv->if1_freq = if1;
417433c4864SAntti Palosaari priv->i2c_max_regs = ~0;
418ccae7af2SMauro Carvalho Chehab
419ccae7af2SMauro Carvalho Chehab if (fe->ops.i2c_gate_ctrl)
420ccae7af2SMauro Carvalho Chehab fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
421ccae7af2SMauro Carvalho Chehab
422ccae7af2SMauro Carvalho Chehab if (mt2060_readreg(priv,REG_PART_REV,&id) != 0) {
423ccae7af2SMauro Carvalho Chehab kfree(priv);
424ccae7af2SMauro Carvalho Chehab return NULL;
425ccae7af2SMauro Carvalho Chehab }
426ccae7af2SMauro Carvalho Chehab
427ccae7af2SMauro Carvalho Chehab if (id != PART_REV) {
428ccae7af2SMauro Carvalho Chehab kfree(priv);
429ccae7af2SMauro Carvalho Chehab return NULL;
430ccae7af2SMauro Carvalho Chehab }
431ccae7af2SMauro Carvalho Chehab printk(KERN_INFO "MT2060: successfully identified (IF1 = %d)\n", if1);
432ccae7af2SMauro Carvalho Chehab memcpy(&fe->ops.tuner_ops, &mt2060_tuner_ops, sizeof(struct dvb_tuner_ops));
433ccae7af2SMauro Carvalho Chehab
434ccae7af2SMauro Carvalho Chehab fe->tuner_priv = priv;
435ccae7af2SMauro Carvalho Chehab
436ccae7af2SMauro Carvalho Chehab mt2060_calibrate(priv);
437ccae7af2SMauro Carvalho Chehab
438ccae7af2SMauro Carvalho Chehab if (fe->ops.i2c_gate_ctrl)
439ccae7af2SMauro Carvalho Chehab fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
440ccae7af2SMauro Carvalho Chehab
441ccae7af2SMauro Carvalho Chehab return fe;
442ccae7af2SMauro Carvalho Chehab }
443*86495af1SGreg Kroah-Hartman EXPORT_SYMBOL_GPL(mt2060_attach);
444ccae7af2SMauro Carvalho Chehab
mt2060_probe(struct i2c_client * client)4459ebd0543SUwe Kleine-König static int mt2060_probe(struct i2c_client *client)
44659e8b7aaSAntti Palosaari {
44759e8b7aaSAntti Palosaari struct mt2060_platform_data *pdata = client->dev.platform_data;
44859e8b7aaSAntti Palosaari struct dvb_frontend *fe;
44959e8b7aaSAntti Palosaari struct mt2060_priv *dev;
45059e8b7aaSAntti Palosaari int ret;
45159e8b7aaSAntti Palosaari u8 chip_id;
45259e8b7aaSAntti Palosaari
45359e8b7aaSAntti Palosaari dev_dbg(&client->dev, "\n");
45459e8b7aaSAntti Palosaari
45559e8b7aaSAntti Palosaari if (!pdata) {
45659e8b7aaSAntti Palosaari dev_err(&client->dev, "Cannot proceed without platform data\n");
45759e8b7aaSAntti Palosaari ret = -EINVAL;
45859e8b7aaSAntti Palosaari goto err;
45959e8b7aaSAntti Palosaari }
46059e8b7aaSAntti Palosaari
46159e8b7aaSAntti Palosaari dev = devm_kzalloc(&client->dev, sizeof(*dev), GFP_KERNEL);
46259e8b7aaSAntti Palosaari if (!dev) {
46359e8b7aaSAntti Palosaari ret = -ENOMEM;
46459e8b7aaSAntti Palosaari goto err;
46559e8b7aaSAntti Palosaari }
46659e8b7aaSAntti Palosaari
46759e8b7aaSAntti Palosaari fe = pdata->dvb_frontend;
46859e8b7aaSAntti Palosaari dev->config.i2c_address = client->addr;
46959e8b7aaSAntti Palosaari dev->config.clock_out = pdata->clock_out;
47059e8b7aaSAntti Palosaari dev->cfg = &dev->config;
47159e8b7aaSAntti Palosaari dev->i2c = client->adapter;
47259e8b7aaSAntti Palosaari dev->if1_freq = pdata->if1 ? pdata->if1 : 1220;
47359e8b7aaSAntti Palosaari dev->client = client;
474433c4864SAntti Palosaari dev->i2c_max_regs = pdata->i2c_write_max ? pdata->i2c_write_max - 1 : ~0;
475e11415c8SAntti Palosaari dev->sleep = true;
47659e8b7aaSAntti Palosaari
47759e8b7aaSAntti Palosaari ret = mt2060_readreg(dev, REG_PART_REV, &chip_id);
47859e8b7aaSAntti Palosaari if (ret) {
47959e8b7aaSAntti Palosaari ret = -ENODEV;
48059e8b7aaSAntti Palosaari goto err;
48159e8b7aaSAntti Palosaari }
48259e8b7aaSAntti Palosaari
48359e8b7aaSAntti Palosaari dev_dbg(&client->dev, "chip id=%02x\n", chip_id);
48459e8b7aaSAntti Palosaari
48559e8b7aaSAntti Palosaari if (chip_id != PART_REV) {
48659e8b7aaSAntti Palosaari ret = -ENODEV;
48759e8b7aaSAntti Palosaari goto err;
48859e8b7aaSAntti Palosaari }
48959e8b7aaSAntti Palosaari
490e11415c8SAntti Palosaari /* Power on, calibrate, sleep */
491e11415c8SAntti Palosaari ret = mt2060_writereg(dev, REG_MISC_CTRL, 0x20);
492e11415c8SAntti Palosaari if (ret)
493e11415c8SAntti Palosaari goto err;
494e11415c8SAntti Palosaari mt2060_calibrate(dev);
495e11415c8SAntti Palosaari ret = mt2060_writereg(dev, REG_MISC_CTRL, 0xe8);
496e11415c8SAntti Palosaari if (ret)
497e11415c8SAntti Palosaari goto err;
498e11415c8SAntti Palosaari
49959e8b7aaSAntti Palosaari dev_info(&client->dev, "Microtune MT2060 successfully identified\n");
50059e8b7aaSAntti Palosaari memcpy(&fe->ops.tuner_ops, &mt2060_tuner_ops, sizeof(fe->ops.tuner_ops));
50159e8b7aaSAntti Palosaari fe->ops.tuner_ops.release = NULL;
50259e8b7aaSAntti Palosaari fe->tuner_priv = dev;
50359e8b7aaSAntti Palosaari i2c_set_clientdata(client, dev);
50459e8b7aaSAntti Palosaari
50559e8b7aaSAntti Palosaari return 0;
50659e8b7aaSAntti Palosaari err:
50759e8b7aaSAntti Palosaari dev_dbg(&client->dev, "failed=%d\n", ret);
50859e8b7aaSAntti Palosaari return ret;
50959e8b7aaSAntti Palosaari }
51059e8b7aaSAntti Palosaari
mt2060_remove(struct i2c_client * client)511ed5c2f5fSUwe Kleine-König static void mt2060_remove(struct i2c_client *client)
51259e8b7aaSAntti Palosaari {
51359e8b7aaSAntti Palosaari dev_dbg(&client->dev, "\n");
51459e8b7aaSAntti Palosaari }
51559e8b7aaSAntti Palosaari
51659e8b7aaSAntti Palosaari static const struct i2c_device_id mt2060_id_table[] = {
51759e8b7aaSAntti Palosaari {"mt2060", 0},
51859e8b7aaSAntti Palosaari {}
51959e8b7aaSAntti Palosaari };
52059e8b7aaSAntti Palosaari MODULE_DEVICE_TABLE(i2c, mt2060_id_table);
52159e8b7aaSAntti Palosaari
52259e8b7aaSAntti Palosaari static struct i2c_driver mt2060_driver = {
52359e8b7aaSAntti Palosaari .driver = {
52459e8b7aaSAntti Palosaari .name = "mt2060",
52559e8b7aaSAntti Palosaari .suppress_bind_attrs = true,
52659e8b7aaSAntti Palosaari },
527aaeb31c0SUwe Kleine-König .probe = mt2060_probe,
52859e8b7aaSAntti Palosaari .remove = mt2060_remove,
52959e8b7aaSAntti Palosaari .id_table = mt2060_id_table,
53059e8b7aaSAntti Palosaari };
53159e8b7aaSAntti Palosaari
53259e8b7aaSAntti Palosaari module_i2c_driver(mt2060_driver);
53359e8b7aaSAntti Palosaari
534ccae7af2SMauro Carvalho Chehab MODULE_AUTHOR("Olivier DANET");
535ccae7af2SMauro Carvalho Chehab MODULE_DESCRIPTION("Microtune MT2060 silicon tuner driver");
536ccae7af2SMauro Carvalho Chehab MODULE_LICENSE("GPL");
537