Commit | Line | Data |
---|---|---|
53c4e955 | 1 | |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | |
4 | cx88-i2c.c -- all the i2c code is here | |
5 | ||
6 | Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de) | |
4ac97914 | 7 | & Marcus Metzler (mocm@thp.uni-koeln.de) |
1da177e4 LT |
8 | (c) 2002 Yurij Sysoev <yurij@naturesoft.net> |
9 | (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org> | |
10 | ||
3153d0d0 MCC |
11 | (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org> |
12 | - Multituner support and i2c address binding | |
13 | ||
1da177e4 LT |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
16 | the Free Software Foundation; either version 2 of the License, or | |
17 | (at your option) any later version. | |
18 | ||
19 | This program is distributed in the hope that it will be useful, | |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU General Public License | |
25 | along with this program; if not, write to the Free Software | |
26 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | ||
28 | */ | |
29 | ||
30 | #include <linux/module.h> | |
1da177e4 LT |
31 | #include <linux/init.h> |
32 | ||
33 | #include <asm/io.h> | |
34 | ||
35 | #include "cx88.h" | |
5e453dc7 | 36 | #include <media/v4l2-common.h> |
1da177e4 LT |
37 | |
38 | static unsigned int i2c_debug = 0; | |
39 | module_param(i2c_debug, int, 0644); | |
40 | MODULE_PARM_DESC(i2c_debug,"enable debug messages [i2c]"); | |
41 | ||
42 | static unsigned int i2c_scan = 0; | |
43 | module_param(i2c_scan, int, 0444); | |
44 | MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time"); | |
45 | ||
141276b5 MCC |
46 | static unsigned int i2c_udelay = 5; |
47 | module_param(i2c_udelay, int, 0644); | |
48 | MODULE_PARM_DESC(i2c_udelay,"i2c delay at insmod time, in usecs " | |
49 | "(should be 5 or higher). Lower value means higher bus speed."); | |
50 | ||
1da177e4 LT |
51 | #define dprintk(level,fmt, arg...) if (i2c_debug >= level) \ |
52 | printk(KERN_DEBUG "%s: " fmt, core->name , ## arg) | |
53 | ||
54 | /* ----------------------------------------------------------------------- */ | |
55 | ||
408b664a | 56 | static void cx8800_bit_setscl(void *data, int state) |
1da177e4 LT |
57 | { |
58 | struct cx88_core *core = data; | |
59 | ||
60 | if (state) | |
61 | core->i2c_state |= 0x02; | |
62 | else | |
63 | core->i2c_state &= ~0x02; | |
64 | cx_write(MO_I2C, core->i2c_state); | |
65 | cx_read(MO_I2C); | |
66 | } | |
67 | ||
408b664a | 68 | static void cx8800_bit_setsda(void *data, int state) |
1da177e4 LT |
69 | { |
70 | struct cx88_core *core = data; | |
71 | ||
72 | if (state) | |
73 | core->i2c_state |= 0x01; | |
74 | else | |
75 | core->i2c_state &= ~0x01; | |
76 | cx_write(MO_I2C, core->i2c_state); | |
77 | cx_read(MO_I2C); | |
78 | } | |
79 | ||
80 | static int cx8800_bit_getscl(void *data) | |
81 | { | |
82 | struct cx88_core *core = data; | |
83 | u32 state; | |
84 | ||
85 | state = cx_read(MO_I2C); | |
86 | return state & 0x02 ? 1 : 0; | |
87 | } | |
88 | ||
89 | static int cx8800_bit_getsda(void *data) | |
90 | { | |
91 | struct cx88_core *core = data; | |
92 | u32 state; | |
93 | ||
94 | state = cx_read(MO_I2C); | |
95 | return state & 0x01; | |
96 | } | |
97 | ||
98 | /* ----------------------------------------------------------------------- */ | |
99 | ||
100 | static int attach_inform(struct i2c_client *client) | |
101 | { | |
4ac97914 | 102 | struct tuner_setup tun_setup; |
1da177e4 LT |
103 | struct cx88_core *core = i2c_get_adapdata(client->adapter); |
104 | ||
41ef7c1e | 105 | dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n", |
604f28e2 | 106 | client->driver->driver.name, client->addr, client->name); |
1da177e4 LT |
107 | if (!client->driver->command) |
108 | return 0; | |
109 | ||
6a59d64c TP |
110 | if (core->board.radio_type != UNSET) { |
111 | if ((core->board.radio_addr==ADDR_UNSET)||(core->board.radio_addr==client->addr)) { | |
60464da8 ST |
112 | tun_setup.mode_mask = T_RADIO; |
113 | tun_setup.type = core->board.radio_type; | |
114 | tun_setup.addr = core->board.radio_addr; | |
115 | tun_setup.tuner_callback = cx88_tuner_callback; | |
41ef7c1e MCC |
116 | client->driver->command (client, TUNER_SET_TYPE_ADDR, &tun_setup); |
117 | } | |
4ac97914 | 118 | } |
6a59d64c TP |
119 | if (core->board.tuner_type != UNSET) { |
120 | if ((core->board.tuner_addr==ADDR_UNSET)||(core->board.tuner_addr==client->addr)) { | |
41ef7c1e | 121 | |
60464da8 ST |
122 | tun_setup.mode_mask = T_ANALOG_TV; |
123 | tun_setup.type = core->board.tuner_type; | |
124 | tun_setup.addr = core->board.tuner_addr; | |
125 | tun_setup.tuner_callback = cx88_tuner_callback; | |
41ef7c1e MCC |
126 | client->driver->command (client,TUNER_SET_TYPE_ADDR, &tun_setup); |
127 | } | |
4ac97914 | 128 | } |
b45009b0 | 129 | |
7f171123 MCC |
130 | if (core->board.tda9887_conf) { |
131 | struct v4l2_priv_tun_config tda9887_cfg; | |
132 | ||
133 | tda9887_cfg.tuner = TUNER_TDA9887; | |
134 | tda9887_cfg.priv = &core->board.tda9887_conf; | |
135 | ||
136 | client->driver->command(client, TUNER_SET_CONFIG, &tda9887_cfg); | |
137 | } | |
1da177e4 LT |
138 | return 0; |
139 | } | |
140 | ||
141 | static int detach_inform(struct i2c_client *client) | |
142 | { | |
143 | struct cx88_core *core = i2c_get_adapdata(client->adapter); | |
144 | ||
fae91e72 | 145 | dprintk(1, "i2c detach [client=%s]\n", client->name); |
1da177e4 LT |
146 | return 0; |
147 | } | |
148 | ||
149 | void cx88_call_i2c_clients(struct cx88_core *core, unsigned int cmd, void *arg) | |
150 | { | |
151 | if (0 != core->i2c_rc) | |
152 | return; | |
611900c1 | 153 | |
5a3ebe87 | 154 | #if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE) |
76ac5dd6 | 155 | if ( (core->dvbdev) && (core->dvbdev->dvb.frontend) ) { |
dea74869 PB |
156 | if (core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl) |
157 | core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl(core->dvbdev->dvb.frontend, 1); | |
611900c1 ST |
158 | |
159 | i2c_clients_command(&core->i2c_adap, cmd, arg); | |
160 | ||
dea74869 PB |
161 | if (core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl) |
162 | core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl(core->dvbdev->dvb.frontend, 0); | |
bcb17c42 | 163 | } else |
05ad3907 | 164 | #endif |
bcb17c42 | 165 | i2c_clients_command(&core->i2c_adap, cmd, arg); |
1da177e4 LT |
166 | } |
167 | ||
7e520d09 | 168 | static const struct i2c_algo_bit_data cx8800_i2c_algo_template = { |
1da177e4 LT |
169 | .setsda = cx8800_bit_setsda, |
170 | .setscl = cx8800_bit_setscl, | |
171 | .getsda = cx8800_bit_getsda, | |
172 | .getscl = cx8800_bit_getscl, | |
173 | .udelay = 16, | |
1da177e4 LT |
174 | .timeout = 200, |
175 | }; | |
176 | ||
177 | /* ----------------------------------------------------------------------- */ | |
178 | ||
1da177e4 | 179 | static char *i2c_devs[128] = { |
6ddcc919 | 180 | [ 0x1c >> 1 ] = "lgdt330x", |
1da177e4 LT |
181 | [ 0x86 >> 1 ] = "tda9887/cx22702", |
182 | [ 0xa0 >> 1 ] = "eeprom", | |
183 | [ 0xc0 >> 1 ] = "tuner (analog)", | |
184 | [ 0xc2 >> 1 ] = "tuner (analog/dvb)", | |
60464da8 | 185 | [ 0xc8 >> 1 ] = "xc5000", |
1da177e4 LT |
186 | }; |
187 | ||
188 | static void do_i2c_scan(char *name, struct i2c_client *c) | |
189 | { | |
190 | unsigned char buf; | |
191 | int i,rc; | |
192 | ||
53c4e955 | 193 | for (i = 0; i < ARRAY_SIZE(i2c_devs); i++) { |
1da177e4 LT |
194 | c->addr = i; |
195 | rc = i2c_master_recv(c,&buf,0); | |
196 | if (rc < 0) | |
197 | continue; | |
198 | printk("%s: i2c scan: found device @ 0x%x [%s]\n", | |
199 | name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???"); | |
200 | } | |
201 | } | |
202 | ||
203 | /* init + register i2c algo-bit adapter */ | |
204 | int cx88_i2c_init(struct cx88_core *core, struct pci_dev *pci) | |
205 | { | |
141276b5 MCC |
206 | /* Prevents usage of invalid delay values */ |
207 | if (i2c_udelay<5) | |
208 | i2c_udelay=5; | |
141276b5 | 209 | |
1da177e4 LT |
210 | memcpy(&core->i2c_algo, &cx8800_i2c_algo_template, |
211 | sizeof(core->i2c_algo)); | |
1da177e4 | 212 | |
6a59d64c | 213 | if (core->board.tuner_type != TUNER_ABSENT) |
1da177e4 | 214 | core->i2c_adap.class |= I2C_CLASS_TV_ANALOG; |
6a59d64c | 215 | if (core->board.mpeg & CX88_MPEG_DVB) |
1da177e4 LT |
216 | core->i2c_adap.class |= I2C_CLASS_TV_DIGITAL; |
217 | ||
218 | core->i2c_adap.dev.parent = &pci->dev; | |
219 | strlcpy(core->i2c_adap.name,core->name,sizeof(core->i2c_adap.name)); | |
7e520d09 JD |
220 | core->i2c_adap.owner = THIS_MODULE; |
221 | core->i2c_adap.id = I2C_HW_B_CX2388x; | |
222 | core->i2c_adap.client_register = attach_inform; | |
223 | core->i2c_adap.client_unregister = detach_inform; | |
224 | core->i2c_algo.udelay = i2c_udelay; | |
4ac97914 MCC |
225 | core->i2c_algo.data = core; |
226 | i2c_set_adapdata(&core->i2c_adap,core); | |
227 | core->i2c_adap.algo_data = &core->i2c_algo; | |
228 | core->i2c_client.adapter = &core->i2c_adap; | |
7e520d09 | 229 | strlcpy(core->i2c_client.name, "cx88xx internal", I2C_NAME_SIZE); |
1da177e4 LT |
230 | |
231 | cx8800_bit_setscl(core,1); | |
232 | cx8800_bit_setsda(core,1); | |
233 | ||
234 | core->i2c_rc = i2c_bit_add_bus(&core->i2c_adap); | |
235 | if (0 == core->i2c_rc) { | |
236 | dprintk(1, "i2c register ok\n"); | |
237 | if (i2c_scan) | |
238 | do_i2c_scan(core->name,&core->i2c_client); | |
239 | } else | |
240 | printk("%s: i2c register FAILED\n", core->name); | |
241 | return core->i2c_rc; | |
242 | } | |
243 | ||
244 | /* ----------------------------------------------------------------------- */ | |
245 | ||
246 | EXPORT_SYMBOL(cx88_call_i2c_clients); | |
1da177e4 LT |
247 | |
248 | /* | |
249 | * Local variables: | |
250 | * c-basic-offset: 8 | |
251 | * End: | |
252 | */ |