Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | |
3 | cx88-i2c.c -- all the i2c code is here | |
4 | ||
5 | Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de) | |
4ac97914 | 6 | & Marcus Metzler (mocm@thp.uni-koeln.de) |
1da177e4 LT |
7 | (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 | ||
34 | static unsigned int i2c_debug = 0; | |
35 | module_param(i2c_debug, int, 0644); | |
36 | MODULE_PARM_DESC(i2c_debug,"enable debug messages [i2c]"); | |
37 | ||
38 | static unsigned int i2c_scan = 0; | |
39 | module_param(i2c_scan, int, 0444); | |
40 | MODULE_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 | ||
408b664a | 47 | static void cx8800_bit_setscl(void *data, int state) |
1da177e4 LT |
48 | { |
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 | ||
408b664a | 59 | static void cx8800_bit_setsda(void *data, int state) |
1da177e4 LT |
60 | { |
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 | ||
71 | static 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 | ||
80 | static 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 | ||
91 | static int attach_inform(struct i2c_client *client) | |
92 | { | |
4ac97914 | 93 | struct tuner_setup tun_setup; |
1da177e4 LT |
94 | struct cx88_core *core = i2c_get_adapdata(client->adapter); |
95 | ||
41ef7c1e | 96 | dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n", |
604f28e2 | 97 | client->driver->driver.name, client->addr, client->name); |
1da177e4 LT |
98 | if (!client->driver->command) |
99 | return 0; | |
100 | ||
4ac97914 | 101 | if (core->radio_type != UNSET) { |
41ef7c1e MCC |
102 | 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 | } | |
4ac97914 MCC |
109 | } |
110 | if (core->tuner_type != UNSET) { | |
41ef7c1e MCC |
111 | 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 | } | |
4ac97914 | 119 | } |
b45009b0 | 120 | |
1da177e4 LT |
121 | if (core->tda9887_conf) |
122 | client->driver->command(client, TDA9887_SET_CONFIG, &core->tda9887_conf); | |
123 | return 0; | |
124 | } | |
125 | ||
126 | static int detach_inform(struct i2c_client *client) | |
127 | { | |
128 | struct cx88_core *core = i2c_get_adapdata(client->adapter); | |
129 | ||
fae91e72 | 130 | dprintk(1, "i2c detach [client=%s]\n", client->name); |
1da177e4 LT |
131 | return 0; |
132 | } | |
133 | ||
134 | void 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 | ||
141 | static 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 | ||
153 | static struct i2c_adapter cx8800_i2c_adap_template = { | |
fae91e72 | 154 | .name = "cx2388x", |
1da177e4 LT |
155 | .owner = THIS_MODULE, |
156 | .id = I2C_HW_B_CX2388x, | |
157 | .client_register = attach_inform, | |
158 | .client_unregister = detach_inform, | |
159 | }; | |
160 | ||
161 | static struct i2c_client cx8800_i2c_client_template = { | |
4ac97914 | 162 | .name = "cx88xx internal", |
1da177e4 LT |
163 | }; |
164 | ||
165 | static char *i2c_devs[128] = { | |
6ddcc919 | 166 | [ 0x1c >> 1 ] = "lgdt330x", |
1da177e4 LT |
167 | [ 0x86 >> 1 ] = "tda9887/cx22702", |
168 | [ 0xa0 >> 1 ] = "eeprom", | |
169 | [ 0xc0 >> 1 ] = "tuner (analog)", | |
170 | [ 0xc2 >> 1 ] = "tuner (analog/dvb)", | |
171 | }; | |
172 | ||
173 | static 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 */ | |
189 | int 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)); | |
4ac97914 MCC |
205 | 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; | |
1da177e4 LT |
209 | |
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 | ||
225 | EXPORT_SYMBOL(cx88_call_i2c_clients); | |
226 | EXPORT_SYMBOL(cx88_i2c_init); | |
227 | ||
228 | /* | |
229 | * Local variables: | |
230 | * c-basic-offset: 8 | |
231 | * End: | |
232 | */ |