1 /*
2 	Mantis VP-2033 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 <media/dmxdev.h>
26 #include <media/dvbdev.h>
27 #include <media/dvb_demux.h>
28 #include <media/dvb_frontend.h>
29 #include <media/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_vp2033.h"
36 
37 #define MANTIS_MODEL_NAME	"VP-2033"
38 #define MANTIS_DEV_TYPE		"DVB-C"
39 
40 static struct tda1002x_config vp2033_tda1002x_cu1216_config = {
41 	.demod_address = 0x18 >> 1,
42 	.invert = 1,
43 };
44 
45 static struct tda10023_config vp2033_tda10023_cu1216_config = {
46 	.demod_address = 0x18 >> 1,
47 	.invert = 1,
48 };
49 
50 static u8 read_pwm(struct mantis_pci *mantis)
51 {
52 	struct i2c_adapter *adapter = &mantis->adapter;
53 
54 	u8 b = 0xff;
55 	u8 pwm;
56 	struct i2c_msg msg[] = {
57 		{.addr = 0x50, .flags = 0, .buf = &b, .len = 1},
58 		{.addr = 0x50, .flags = I2C_M_RD, .buf = &pwm, .len = 1}
59 	};
60 
61 	if ((i2c_transfer(adapter, msg, 2) != 2)
62 	    || (pwm == 0xff))
63 		pwm = 0x48;
64 
65 	return pwm;
66 }
67 
68 static int tda1002x_cu1216_tuner_set(struct dvb_frontend *fe)
69 {
70 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
71 	struct mantis_pci *mantis = fe->dvb->priv;
72 	struct i2c_adapter *adapter = &mantis->adapter;
73 
74 	u8 buf[6];
75 	struct i2c_msg msg = {.addr = 0x60, .flags = 0, .buf = buf, .len = sizeof(buf)};
76 	int i;
77 
78 #define CU1216_IF 36125000
79 #define TUNER_MUL 62500
80 
81 	u32 div = (p->frequency + CU1216_IF + TUNER_MUL / 2) / TUNER_MUL;
82 
83 	buf[0] = (div >> 8) & 0x7f;
84 	buf[1] = div & 0xff;
85 	buf[2] = 0xce;
86 	buf[3] = (p->frequency < 150000000 ? 0x01 :
87 		  p->frequency < 445000000 ? 0x02 : 0x04);
88 	buf[4] = 0xde;
89 	buf[5] = 0x20;
90 
91 	if (fe->ops.i2c_gate_ctrl)
92 		fe->ops.i2c_gate_ctrl(fe, 1);
93 
94 	if (i2c_transfer(adapter, &msg, 1) != 1)
95 		return -EIO;
96 
97 	/* wait for the pll lock */
98 	msg.flags = I2C_M_RD;
99 	msg.len = 1;
100 	for (i = 0; i < 20; i++) {
101 		if (fe->ops.i2c_gate_ctrl)
102 			fe->ops.i2c_gate_ctrl(fe, 1);
103 
104 		if (i2c_transfer(adapter, &msg, 1) == 1 && (buf[0] & 0x40))
105 			break;
106 
107 		msleep(10);
108 	}
109 
110 	/* switch the charge pump to the lower current */
111 	msg.flags = 0;
112 	msg.len = 2;
113 	msg.buf = &buf[2];
114 	buf[2] &= ~0x40;
115 	if (fe->ops.i2c_gate_ctrl)
116 		fe->ops.i2c_gate_ctrl(fe, 1);
117 
118 	if (i2c_transfer(adapter, &msg, 1) != 1)
119 		return -EIO;
120 
121 	return 0;
122 }
123 
124 static int vp2033_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, &vp2033_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 				vp2033_tda1002x_cu1216_config.demod_address);
144 		} else {
145 			fe = dvb_attach(tda10023_attach, &vp2033_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 					vp2033_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 
170 	mantis->fe = fe;
171 	dprintk(MANTIS_DEBUG, 1, "Done!");
172 
173 	return 0;
174 }
175 
176 struct mantis_hwconfig vp2033_config = {
177 	.model_name	= MANTIS_MODEL_NAME,
178 	.dev_type	= MANTIS_DEV_TYPE,
179 	.ts_size	= MANTIS_TS_204,
180 
181 	.baud_rate	= MANTIS_BAUD_9600,
182 	.parity		= MANTIS_PARITY_NONE,
183 	.bytes		= 0,
184 
185 	.frontend_init	= vp2033_frontend_init,
186 	.power		= GPIF_A12,
187 	.reset		= GPIF_A13,
188 };
189