Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[linux-2.6.git] / drivers / media / dvb / mantis / mantis_vp2040.c
1 /*
2         Mantis VP-2040 driver
3
4         Copyright (C) Manu Abraham (abraham.manu@gmail.com)
5
6         This program is free software; you can redistribute it and/or modify
7         it under the terms of the GNU General Public License as published by
8         the Free Software Foundation; either version 2 of the License, or
9         (at your option) any later version.
10
11         This program is distributed in the hope that it will be useful,
12         but WITHOUT ANY WARRANTY; without even the implied warranty of
13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14         GNU General Public License for more details.
15
16         You should have received a copy of the GNU General Public License
17         along with this program; if not, write to the Free Software
18         Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include <linux/signal.h>
22 #include <linux/sched.h>
23 #include <linux/interrupt.h>
24
25 #include "dmxdev.h"
26 #include "dvbdev.h"
27 #include "dvb_demux.h"
28 #include "dvb_frontend.h"
29 #include "dvb_net.h"
30
31 #include "tda1002x.h"
32 #include "mantis_common.h"
33 #include "mantis_ioc.h"
34 #include "mantis_dvb.h"
35 #include "mantis_vp2040.h"
36
37 #define MANTIS_MODEL_NAME       "VP-2040"
38 #define MANTIS_DEV_TYPE         "DVB-C"
39
40 struct tda1002x_config vp2040_tda1002x_cu1216_config = {
41         .demod_address  = 0x18 >> 1,
42         .invert         = 1,
43 };
44
45 struct tda10023_config vp2040_tda10023_cu1216_config = {
46         .demod_address  = 0x18 >> 1,
47         .invert         = 1,
48 };
49
50 static int tda1002x_cu1216_tuner_set(struct dvb_frontend *fe)
51 {
52         struct dtv_frontend_properties *p = &fe->dtv_property_cache;
53         struct mantis_pci *mantis       = fe->dvb->priv;
54         struct i2c_adapter *adapter     = &mantis->adapter;
55
56         u8 buf[6];
57         struct i2c_msg msg = {.addr = 0x60, .flags = 0, .buf = buf, .len = sizeof(buf)};
58         int i;
59
60 #define CU1216_IF 36125000
61 #define TUNER_MUL 62500
62
63         u32 div = (p->frequency + CU1216_IF + TUNER_MUL / 2) / TUNER_MUL;
64
65         buf[0] = (div >> 8) & 0x7f;
66         buf[1] = div & 0xff;
67         buf[2] = 0xce;
68         buf[3] = (p->frequency < 150000000 ? 0x01 :
69                   p->frequency < 445000000 ? 0x02 : 0x04);
70         buf[4] = 0xde;
71         buf[5] = 0x20;
72
73         if (fe->ops.i2c_gate_ctrl)
74                 fe->ops.i2c_gate_ctrl(fe, 1);
75
76         if (i2c_transfer(adapter, &msg, 1) != 1)
77                 return -EIO;
78
79         /* wait for the pll lock */
80         msg.flags = I2C_M_RD;
81         msg.len = 1;
82         for (i = 0; i < 20; i++) {
83                 if (fe->ops.i2c_gate_ctrl)
84                         fe->ops.i2c_gate_ctrl(fe, 1);
85
86                 if (i2c_transfer(adapter, &msg, 1) == 1 && (buf[0] & 0x40))
87                         break;
88
89                 msleep(10);
90         }
91
92         /* switch the charge pump to the lower current */
93         msg.flags = 0;
94         msg.len = 2;
95         msg.buf = &buf[2];
96         buf[2] &= ~0x40;
97         if (fe->ops.i2c_gate_ctrl)
98                 fe->ops.i2c_gate_ctrl(fe, 1);
99
100         if (i2c_transfer(adapter, &msg, 1) != 1)
101                 return -EIO;
102
103         return 0;
104 }
105
106 static u8 read_pwm(struct mantis_pci *mantis)
107 {
108         struct i2c_adapter *adapter = &mantis->adapter;
109
110         u8 b = 0xff;
111         u8 pwm;
112         struct i2c_msg msg[] = {
113                 {.addr = 0x50, .flags = 0, .buf = &b, .len = 1},
114                 {.addr = 0x50, .flags = I2C_M_RD, .buf = &pwm, .len = 1}
115         };
116
117         if ((i2c_transfer(adapter, msg, 2) != 2)
118             || (pwm == 0xff))
119                 pwm = 0x48;
120
121         return pwm;
122 }
123
124 static int vp2040_frontend_init(struct mantis_pci *mantis, struct dvb_frontend *fe)
125 {
126         struct i2c_adapter *adapter = &mantis->adapter;
127
128         int err = 0;
129
130         err = mantis_frontend_power(mantis, POWER_ON);
131         if (err == 0) {
132                 mantis_frontend_soft_reset(mantis);
133                 msleep(250);
134
135                 dprintk(MANTIS_ERROR, 1, "Probing for CU1216 (DVB-C)");
136                 fe = dvb_attach(tda10021_attach, &vp2040_tda1002x_cu1216_config,
137                                      adapter,
138                                      read_pwm(mantis));
139
140                 if (fe) {
141                         dprintk(MANTIS_ERROR, 1,
142                                 "found Philips CU1216 DVB-C frontend (TDA10021) @ 0x%02x",
143                                 vp2040_tda1002x_cu1216_config.demod_address);
144                 } else {
145                         fe = dvb_attach(tda10023_attach, &vp2040_tda10023_cu1216_config,
146                                              adapter,
147                                              read_pwm(mantis));
148
149                         if (fe) {
150                                 dprintk(MANTIS_ERROR, 1,
151                                         "found Philips CU1216 DVB-C frontend (TDA10023) @ 0x%02x",
152                                         vp2040_tda1002x_cu1216_config.demod_address);
153                         }
154                 }
155
156                 if (fe) {
157                         fe->ops.tuner_ops.set_params = tda1002x_cu1216_tuner_set;
158                         dprintk(MANTIS_ERROR, 1, "Mantis DVB-C Philips CU1216 frontend attach success");
159                 } else {
160                         return -1;
161                 }
162         } else {
163                 dprintk(MANTIS_ERROR, 1, "Frontend on <%s> POWER ON failed! <%d>",
164                         adapter->name,
165                         err);
166
167                 return -EIO;
168         }
169         mantis->fe = fe;
170         dprintk(MANTIS_DEBUG, 1, "Done!");
171
172         return 0;
173 }
174
175 struct mantis_hwconfig vp2040_config = {
176         .model_name     = MANTIS_MODEL_NAME,
177         .dev_type       = MANTIS_DEV_TYPE,
178         .ts_size        = MANTIS_TS_204,
179
180         .baud_rate      = MANTIS_BAUD_9600,
181         .parity         = MANTIS_PARITY_NONE,
182         .bytes          = 0,
183
184         .frontend_init  = vp2040_frontend_init,
185         .power          = GPIF_A12,
186         .reset          = GPIF_A13,
187 };