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Commit | Line | Data |
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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 | 37 | |
ff699e6b | 38 | static unsigned int i2c_debug; |
1da177e4 LT |
39 | module_param(i2c_debug, int, 0644); |
40 | MODULE_PARM_DESC(i2c_debug,"enable debug messages [i2c]"); | |
41 | ||
ff699e6b | 42 | static unsigned int i2c_scan; |
1da177e4 LT |
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 | ||
7e520d09 | 100 | static const struct i2c_algo_bit_data cx8800_i2c_algo_template = { |
1da177e4 LT |
101 | .setsda = cx8800_bit_setsda, |
102 | .setscl = cx8800_bit_setscl, | |
103 | .getsda = cx8800_bit_getsda, | |
104 | .getscl = cx8800_bit_getscl, | |
105 | .udelay = 16, | |
1da177e4 LT |
106 | .timeout = 200, |
107 | }; | |
108 | ||
109 | /* ----------------------------------------------------------------------- */ | |
110 | ||
1da177e4 | 111 | static char *i2c_devs[128] = { |
6ddcc919 | 112 | [ 0x1c >> 1 ] = "lgdt330x", |
1da177e4 LT |
113 | [ 0x86 >> 1 ] = "tda9887/cx22702", |
114 | [ 0xa0 >> 1 ] = "eeprom", | |
115 | [ 0xc0 >> 1 ] = "tuner (analog)", | |
116 | [ 0xc2 >> 1 ] = "tuner (analog/dvb)", | |
60464da8 | 117 | [ 0xc8 >> 1 ] = "xc5000", |
1da177e4 LT |
118 | }; |
119 | ||
120 | static void do_i2c_scan(char *name, struct i2c_client *c) | |
121 | { | |
122 | unsigned char buf; | |
123 | int i,rc; | |
124 | ||
53c4e955 | 125 | for (i = 0; i < ARRAY_SIZE(i2c_devs); i++) { |
1da177e4 LT |
126 | c->addr = i; |
127 | rc = i2c_master_recv(c,&buf,0); | |
128 | if (rc < 0) | |
129 | continue; | |
130 | printk("%s: i2c scan: found device @ 0x%x [%s]\n", | |
131 | name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???"); | |
132 | } | |
133 | } | |
134 | ||
135 | /* init + register i2c algo-bit adapter */ | |
136 | int cx88_i2c_init(struct cx88_core *core, struct pci_dev *pci) | |
137 | { | |
141276b5 MCC |
138 | /* Prevents usage of invalid delay values */ |
139 | if (i2c_udelay<5) | |
140 | i2c_udelay=5; | |
141276b5 | 141 | |
1da177e4 LT |
142 | memcpy(&core->i2c_algo, &cx8800_i2c_algo_template, |
143 | sizeof(core->i2c_algo)); | |
1da177e4 | 144 | |
1da177e4 LT |
145 | |
146 | core->i2c_adap.dev.parent = &pci->dev; | |
147 | strlcpy(core->i2c_adap.name,core->name,sizeof(core->i2c_adap.name)); | |
7e520d09 JD |
148 | core->i2c_adap.owner = THIS_MODULE; |
149 | core->i2c_adap.id = I2C_HW_B_CX2388x; | |
7e520d09 | 150 | core->i2c_algo.udelay = i2c_udelay; |
4ac97914 | 151 | core->i2c_algo.data = core; |
9467fe12 | 152 | i2c_set_adapdata(&core->i2c_adap, &core->v4l2_dev); |
4ac97914 MCC |
153 | core->i2c_adap.algo_data = &core->i2c_algo; |
154 | core->i2c_client.adapter = &core->i2c_adap; | |
7e520d09 | 155 | strlcpy(core->i2c_client.name, "cx88xx internal", I2C_NAME_SIZE); |
1da177e4 LT |
156 | |
157 | cx8800_bit_setscl(core,1); | |
158 | cx8800_bit_setsda(core,1); | |
159 | ||
160 | core->i2c_rc = i2c_bit_add_bus(&core->i2c_adap); | |
161 | if (0 == core->i2c_rc) { | |
1cbd89db ST |
162 | static u8 tuner_data[] = |
163 | { 0x0b, 0xdc, 0x86, 0x52 }; | |
164 | static struct i2c_msg tuner_msg = | |
165 | { .flags = 0, .addr = 0xc2 >> 1, .buf = tuner_data, .len = 4 }; | |
166 | ||
1da177e4 | 167 | dprintk(1, "i2c register ok\n"); |
1cbd89db ST |
168 | switch( core->boardnr ) { |
169 | case CX88_BOARD_HAUPPAUGE_HVR1300: | |
170 | case CX88_BOARD_HAUPPAUGE_HVR3000: | |
171 | case CX88_BOARD_HAUPPAUGE_HVR4000: | |
172 | printk("%s: i2c init: enabling analog demod on HVR1300/3000/4000 tuner\n", | |
173 | core->name); | |
174 | i2c_transfer(core->i2c_client.adapter, &tuner_msg, 1); | |
175 | break; | |
176 | default: | |
177 | break; | |
178 | } | |
1da177e4 LT |
179 | if (i2c_scan) |
180 | do_i2c_scan(core->name,&core->i2c_client); | |
181 | } else | |
182 | printk("%s: i2c register FAILED\n", core->name); | |
c668f32d JD |
183 | |
184 | /* Instantiate the IR receiver device, if present */ | |
185 | if (0 == core->i2c_rc) { | |
186 | struct i2c_board_info info; | |
187 | const unsigned short addr_list[] = { | |
188 | 0x18, 0x6b, 0x71, | |
189 | I2C_CLIENT_END | |
190 | }; | |
806b07c2 | 191 | const unsigned short *addrp; |
c668f32d JD |
192 | |
193 | memset(&info, 0, sizeof(struct i2c_board_info)); | |
194 | strlcpy(info.type, "ir_video", I2C_NAME_SIZE); | |
806b07c2 JD |
195 | /* |
196 | * We can't call i2c_new_probed_device() because it uses | |
197 | * quick writes for probing and at least some R receiver | |
198 | * devices only reply to reads. | |
199 | */ | |
200 | for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) { | |
201 | if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0, | |
202 | I2C_SMBUS_READ, 0, | |
203 | I2C_SMBUS_QUICK, NULL) >= 0) { | |
204 | info.addr = *addrp; | |
205 | i2c_new_device(&core->i2c_adap, &info); | |
206 | break; | |
207 | } | |
208 | } | |
c668f32d | 209 | } |
1da177e4 LT |
210 | return core->i2c_rc; |
211 | } | |
212 | ||
213 | /* ----------------------------------------------------------------------- */ | |
214 | ||
1da177e4 LT |
215 | /* |
216 | * Local variables: | |
217 | * c-basic-offset: 8 | |
218 | * End: | |
219 | */ |