Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame^] | 6 | & Marcus Metzler (mocm@thp.uni-koeln.de) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Adrian Bunk | 408b664 | 2005-05-01 08:59:29 -0700 | [diff] [blame] | 47 | static void cx8800_bit_setscl(void *data, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Adrian Bunk | 408b664 | 2005-05-01 08:59:29 -0700 | [diff] [blame] | 59 | static void cx8800_bit_setsda(void *data, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame^] | 93 | struct tuner_setup tun_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | struct cx88_core *core = i2c_get_adapdata(client->adapter); |
| 95 | |
Mauro Carvalho Chehab | 41ef7c1 | 2005-07-12 13:58:44 -0700 | [diff] [blame] | 96 | dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n", |
Jean Delvare | fae91e7 | 2005-08-15 19:57:04 +0200 | [diff] [blame] | 97 | client->driver->name, client->addr, client->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | if (!client->driver->command) |
| 99 | return 0; |
| 100 | |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame^] | 101 | if (core->radio_type != UNSET) { |
Mauro Carvalho Chehab | 41ef7c1 | 2005-07-12 13:58:44 -0700 | [diff] [blame] | 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 | } |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame^] | 109 | } |
| 110 | if (core->tuner_type != UNSET) { |
Mauro Carvalho Chehab | 41ef7c1 | 2005-07-12 13:58:44 -0700 | [diff] [blame] | 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 | } |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame^] | 119 | } |
Mauro Carvalho Chehab | b45009b | 2005-06-23 22:05:03 -0700 | [diff] [blame] | 120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Jean Delvare | fae91e7 | 2005-08-15 19:57:04 +0200 | [diff] [blame] | 130 | dprintk(1, "i2c detach [client=%s]\n", client->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 = { |
Jean Delvare | fae91e7 | 2005-08-15 19:57:04 +0200 | [diff] [blame] | 154 | .name = "cx2388x", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 = { |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame^] | 162 | .name = "cx88xx internal", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | }; |
| 164 | |
| 165 | static char *i2c_devs[128] = { |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 166 | [ 0x1c >> 1 ] = "lgdt330x", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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)); |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame^] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |