summaryrefslogtreecommitdiff
path: root/drivers/media/pci/mantis/mantis_vp2040.c
blob: 67795adb833656575a8106ad6419cf24524ef523 (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
// SPDX-License-Identifier: GPL-2.0-or-later
/*
	Mantis VP-2040 driver

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

*/

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

#include <media/dmxdev.h>
#include <media/dvbdev.h>
#include <media/dvb_demux.h>
#include <media/dvb_frontend.h>
#include <media/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"

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

static 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,
};