summaryrefslogtreecommitdiffstats
path: root/drivers/media/pci/mantis/mantis_vp2040.c
blob: d480741afd786dc3e13420077d43f4567f38e666 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
/*
	Mantis VP-2040 driver

	Copyright (C) Manu Abraham (abraham.manu@gmail.com)

	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.
*/

#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/interrupt.h>

#include "dmxdev.h"
#include "dvbdev.h"
#include "dvb_demux.h"
#include "dvb_frontend.h"
#include "dvb_net.h"

#include "tda1002x.h"
#include "mantis_common.h"
#include "mantis_ioc.h"
#include "mantis_dvb.h"
#include "mantis_vp2040.h"

#define MANTIS_MODEL_NAME	"VP-2040"
#define MANTIS_DEV_TYPE		"DVB-C"

struct tda1002x_config vp2040_tda1002x_cu1216_config = {
	.demod_address	= 0x18 >> 1,
	.invert		= 1,
};

struct tda10023_config vp2040_tda10023_cu1216_config = {
	.demod_address	= 0x18 >> 1,
	.invert		= 1,
};

static int tda1002x_cu1216_tuner_set(struct dvb_frontend *fe)
{
	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
	struct mantis_pci *mantis	= fe->dvb->priv;
	struct i2c_adapter *adapter	= &mantis->adapter;

	u8 buf[6];
	struct i2c_msg msg = {.addr = 0x60, .flags = 0, .buf = buf, .len = sizeof(buf)};
	int i;

#define CU1216_IF 36125000
#define TUNER_MUL 62500

	u32 div = (p->frequency + CU1216_IF + TUNER_MUL / 2) / TUNER_MUL;

	buf[0] = (div >> 8) & 0x7f;
	buf[1] = div & 0xff;
	buf[2] = 0xce;
	buf[3] = (p->frequency < 150000000 ? 0x01 :
		  p->frequency < 445000000 ? 0x02 : 0x04);
	buf[4] = 0xde;
	buf[5] = 0x20;

	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);

	if (i2c_transfer(adapter, &msg, 1) != 1)
		return -EIO;

	/* wait for the pll lock */
	msg.flags = I2C_M_RD;
	msg.len = 1;
	for (i = 0; i < 20; i++) {
		if (fe->ops.i2c_gate_ctrl)
			fe->ops.i2c_gate_ctrl(fe, 1);

		if (i2c_transfer(adapter, &msg, 1) == 1 && (buf[0] & 0x40))
			break;

		msleep(10);
	}

	/* switch the charge pump to the lower current */
	msg.flags = 0;
	msg.len = 2;
	msg.buf = &buf[2];
	buf[2] &= ~0x40;
	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);

	if (i2c_transfer(adapter, &msg, 1) != 1)
		return -EIO;

	return 0;
}

static u8 read_pwm(struct mantis_pci *mantis)
{
	struct i2c_adapter *adapter = &mantis->adapter;

	u8 b = 0xff;
	u8 pwm;
	struct i2c_msg msg[] = {
		{.addr = 0x50, .flags = 0, .buf = &b, .len = 1},
		{.addr = 0x50, .flags = I2C_M_RD, .buf = &pwm, .len = 1}
	};

	if ((i2c_transfer(adapter, msg, 2) != 2)
	    || (pwm == 0xff))
		pwm = 0x48;

	return pwm;
}

static int vp2040_frontend_init(struct mantis_pci *mantis, struct dvb_frontend *fe)
{
	struct i2c_adapter *adapter = &mantis->adapter;

	int err = 0;

	err = mantis_frontend_power(mantis, POWER_ON);
	if (err == 0) {
		mantis_frontend_soft_reset(mantis);
		msleep(250);

		dprintk(MANTIS_ERROR, 1, "Probing for CU1216 (DVB-C)");
		fe = dvb_attach(tda10021_attach, &vp2040_tda1002x_cu1216_config,
				     adapter,
				     read_pwm(mantis));

		if (fe) {
			dprintk(MANTIS_ERROR, 1,
				"found Philips CU1216 DVB-C frontend (TDA10021) @ 0x%02x",
				vp2040_tda1002x_cu1216_config.demod_address);
		} else {
			fe = dvb_attach(tda10023_attach, &vp2040_tda10023_cu1216_config,
					     adapter,
					     read_pwm(mantis));

			if (fe) {
				dprintk(MANTIS_ERROR, 1,
					"found Philips CU1216 DVB-C frontend (TDA10023) @ 0x%02x",
					vp2040_tda1002x_cu1216_config.demod_address);
			}
		}

		if (fe) {
			fe->ops.tuner_ops.set_params = tda1002x_cu1216_tuner_set;
			dprintk(MANTIS_ERROR, 1, "Mantis DVB-C Philips CU1216 frontend attach success");
		} else {
			return -1;
		}
	} else {
		dprintk(MANTIS_ERROR, 1, "Frontend on <%s> POWER ON failed! <%d>",
			adapter->name,
			err);

		return -EIO;
	}
	mantis->fe = fe;
	dprintk(MANTIS_DEBUG, 1, "Done!");

	return 0;
}

struct mantis_hwconfig vp2040_config = {
	.model_name	= MANTIS_MODEL_NAME,
	.dev_type	= MANTIS_DEV_TYPE,
	.ts_size	= MANTIS_TS_204,

	.baud_rate	= MANTIS_BAUD_9600,
	.parity		= MANTIS_PARITY_NONE,
	.bytes		= 0,

	.frontend_init	= vp2040_frontend_init,
	.power		= GPIF_A12,
	.reset		= GPIF_A13,
};
OpenPOWER on IntegriCloud