blob: 9790d412f1927041713c0a23e78f2f83317632ea [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002
3 cx88-i2c.c -- all the i2c code is here
4
5 Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
Mauro Carvalho Chehab4ac97912005-11-08 21:37:43 -08006 & Marcus Metzler (mocm@thp.uni-koeln.de)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 (c) 2002 Yurij Sysoev <yurij@naturesoft.net>
8 (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23
24*/
25
26#include <linux/module.h>
27#include <linux/moduleparam.h>
28#include <linux/init.h>
29
30#include <asm/io.h>
31
32#include "cx88.h"
33
34static unsigned int i2c_debug = 0;
35module_param(i2c_debug, int, 0644);
36MODULE_PARM_DESC(i2c_debug,"enable debug messages [i2c]");
37
38static unsigned int i2c_scan = 0;
39module_param(i2c_scan, int, 0444);
40MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
41
42#define dprintk(level,fmt, arg...) if (i2c_debug >= level) \
43 printk(KERN_DEBUG "%s: " fmt, core->name , ## arg)
44
45/* ----------------------------------------------------------------------- */
46
Adrian Bunk408b6642005-05-01 08:59:29 -070047static void cx8800_bit_setscl(void *data, int state)
Linus Torvalds1da177e2005-04-16 15:20:36 -070048{
49 struct cx88_core *core = data;
50
51 if (state)
52 core->i2c_state |= 0x02;
53 else
54 core->i2c_state &= ~0x02;
55 cx_write(MO_I2C, core->i2c_state);
56 cx_read(MO_I2C);
57}
58
Adrian Bunk408b6642005-05-01 08:59:29 -070059static void cx8800_bit_setsda(void *data, int state)
Linus Torvalds1da177e2005-04-16 15:20:36 -070060{
61 struct cx88_core *core = data;
62
63 if (state)
64 core->i2c_state |= 0x01;
65 else
66 core->i2c_state &= ~0x01;
67 cx_write(MO_I2C, core->i2c_state);
68 cx_read(MO_I2C);
69}
70
71static int cx8800_bit_getscl(void *data)
72{
73 struct cx88_core *core = data;
74 u32 state;
75
76 state = cx_read(MO_I2C);
77 return state & 0x02 ? 1 : 0;
78}
79
80static int cx8800_bit_getsda(void *data)
81{
82 struct cx88_core *core = data;
83 u32 state;
84
85 state = cx_read(MO_I2C);
86 return state & 0x01;
87}
88
89/* ----------------------------------------------------------------------- */
90
91static int attach_inform(struct i2c_client *client)
92{
Mauro Carvalho Chehab4ac97912005-11-08 21:37:43 -080093 struct tuner_setup tun_setup;
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 struct cx88_core *core = i2c_get_adapdata(client->adapter);
95
Mauro Carvalho Chehab41ef7c12005-07-12 13:58:44 -070096 dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n",
Jean Delvarefae91e72005-08-15 19:57:04 +020097 client->driver->name, client->addr, client->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 if (!client->driver->command)
99 return 0;
100
Mauro Carvalho Chehab4ac97912005-11-08 21:37:43 -0800101 if (core->radio_type != UNSET) {
Mauro Carvalho Chehab41ef7c12005-07-12 13:58:44 -0700102 if ((core->radio_addr==ADDR_UNSET)||(core->radio_addr==client->addr)) {
103 tun_setup.mode_mask = T_RADIO;
104 tun_setup.type = core->radio_type;
105 tun_setup.addr = core->radio_addr;
106
107 client->driver->command (client, TUNER_SET_TYPE_ADDR, &tun_setup);
108 }
Mauro Carvalho Chehab4ac97912005-11-08 21:37:43 -0800109 }
110 if (core->tuner_type != UNSET) {
Mauro Carvalho Chehab41ef7c12005-07-12 13:58:44 -0700111 if ((core->tuner_addr==ADDR_UNSET)||(core->tuner_addr==client->addr)) {
112
113 tun_setup.mode_mask = T_ANALOG_TV;
114 tun_setup.type = core->tuner_type;
115 tun_setup.addr = core->tuner_addr;
116
117 client->driver->command (client,TUNER_SET_TYPE_ADDR, &tun_setup);
118 }
Mauro Carvalho Chehab4ac97912005-11-08 21:37:43 -0800119 }
Mauro Carvalho Chehabb45009b2005-06-23 22:05:03 -0700120
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 if (core->tda9887_conf)
122 client->driver->command(client, TDA9887_SET_CONFIG, &core->tda9887_conf);
123 return 0;
124}
125
126static int detach_inform(struct i2c_client *client)
127{
128 struct cx88_core *core = i2c_get_adapdata(client->adapter);
129
Jean Delvarefae91e72005-08-15 19:57:04 +0200130 dprintk(1, "i2c detach [client=%s]\n", client->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 return 0;
132}
133
134void cx88_call_i2c_clients(struct cx88_core *core, unsigned int cmd, void *arg)
135{
136 if (0 != core->i2c_rc)
137 return;
138 i2c_clients_command(&core->i2c_adap, cmd, arg);
139}
140
141static struct i2c_algo_bit_data cx8800_i2c_algo_template = {
142 .setsda = cx8800_bit_setsda,
143 .setscl = cx8800_bit_setscl,
144 .getsda = cx8800_bit_getsda,
145 .getscl = cx8800_bit_getscl,
146 .udelay = 16,
147 .mdelay = 10,
148 .timeout = 200,
149};
150
151/* ----------------------------------------------------------------------- */
152
153static struct i2c_adapter cx8800_i2c_adap_template = {
Jean Delvarefae91e72005-08-15 19:57:04 +0200154 .name = "cx2388x",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 .owner = THIS_MODULE,
156 .id = I2C_HW_B_CX2388x,
157 .client_register = attach_inform,
158 .client_unregister = detach_inform,
159};
160
161static struct i2c_client cx8800_i2c_client_template = {
Mauro Carvalho Chehab4ac97912005-11-08 21:37:43 -0800162 .name = "cx88xx internal",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163};
164
165static char *i2c_devs[128] = {
Michael Krufky6ddcc912005-07-27 11:46:00 -0700166 [ 0x1c >> 1 ] = "lgdt330x",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 [ 0x86 >> 1 ] = "tda9887/cx22702",
168 [ 0xa0 >> 1 ] = "eeprom",
169 [ 0xc0 >> 1 ] = "tuner (analog)",
170 [ 0xc2 >> 1 ] = "tuner (analog/dvb)",
171};
172
173static void do_i2c_scan(char *name, struct i2c_client *c)
174{
175 unsigned char buf;
176 int i,rc;
177
178 for (i = 0; i < 128; i++) {
179 c->addr = i;
180 rc = i2c_master_recv(c,&buf,0);
181 if (rc < 0)
182 continue;
183 printk("%s: i2c scan: found device @ 0x%x [%s]\n",
184 name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
185 }
186}
187
188/* init + register i2c algo-bit adapter */
189int cx88_i2c_init(struct cx88_core *core, struct pci_dev *pci)
190{
191 memcpy(&core->i2c_adap, &cx8800_i2c_adap_template,
192 sizeof(core->i2c_adap));
193 memcpy(&core->i2c_algo, &cx8800_i2c_algo_template,
194 sizeof(core->i2c_algo));
195 memcpy(&core->i2c_client, &cx8800_i2c_client_template,
196 sizeof(core->i2c_client));
197
198 if (core->tuner_type != TUNER_ABSENT)
199 core->i2c_adap.class |= I2C_CLASS_TV_ANALOG;
200 if (cx88_boards[core->board].dvb)
201 core->i2c_adap.class |= I2C_CLASS_TV_DIGITAL;
202
203 core->i2c_adap.dev.parent = &pci->dev;
204 strlcpy(core->i2c_adap.name,core->name,sizeof(core->i2c_adap.name));
Mauro Carvalho Chehab4ac97912005-11-08 21:37:43 -0800205 core->i2c_algo.data = core;
206 i2c_set_adapdata(&core->i2c_adap,core);
207 core->i2c_adap.algo_data = &core->i2c_algo;
208 core->i2c_client.adapter = &core->i2c_adap;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
210 cx8800_bit_setscl(core,1);
211 cx8800_bit_setsda(core,1);
212
213 core->i2c_rc = i2c_bit_add_bus(&core->i2c_adap);
214 if (0 == core->i2c_rc) {
215 dprintk(1, "i2c register ok\n");
216 if (i2c_scan)
217 do_i2c_scan(core->name,&core->i2c_client);
218 } else
219 printk("%s: i2c register FAILED\n", core->name);
220 return core->i2c_rc;
221}
222
223/* ----------------------------------------------------------------------- */
224
225EXPORT_SYMBOL(cx88_call_i2c_clients);
226EXPORT_SYMBOL(cx88_i2c_init);
227
228/*
229 * Local variables:
230 * c-basic-offset: 8
231 * End:
232 */