Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 1 | /* |
| 2 | * cx18 I2C functions |
| 3 | * |
| 4 | * Derived from ivtv-i2c.c |
| 5 | * |
| 6 | * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 21 | * 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include "cx18-driver.h" |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 25 | #include "cx18-io.h" |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 26 | #include "cx18-cards.h" |
| 27 | #include "cx18-gpio.h" |
| 28 | #include "cx18-av-core.h" |
Adrian Bunk | 5051099 | 2008-05-05 18:25:22 -0300 | [diff] [blame] | 29 | #include "cx18-i2c.h" |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 30 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 31 | #define CX18_REG_I2C_1_WR 0xf15000 |
| 32 | #define CX18_REG_I2C_1_RD 0xf15008 |
| 33 | #define CX18_REG_I2C_2_WR 0xf25100 |
| 34 | #define CX18_REG_I2C_2_RD 0xf25108 |
| 35 | |
| 36 | #define SETSCL_BIT 0x0001 |
| 37 | #define SETSDL_BIT 0x0002 |
| 38 | #define GETSCL_BIT 0x0004 |
| 39 | #define GETSDL_BIT 0x0008 |
| 40 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 41 | #define CX18_CS5345_I2C_ADDR 0x4c |
| 42 | |
| 43 | /* This array should match the CX18_HW_ defines */ |
| 44 | static const u8 hw_driverids[] = { |
| 45 | I2C_DRIVERID_TUNER, |
| 46 | I2C_DRIVERID_TVEEPROM, |
| 47 | I2C_DRIVERID_CS5345, |
| 48 | 0, /* CX18_HW_GPIO dummy driver ID */ |
| 49 | 0 /* CX18_HW_CX23418 dummy driver ID */ |
| 50 | }; |
| 51 | |
| 52 | /* This array should match the CX18_HW_ defines */ |
| 53 | static const u8 hw_addrs[] = { |
| 54 | 0, |
| 55 | 0, |
| 56 | CX18_CS5345_I2C_ADDR, |
| 57 | 0, /* CX18_HW_GPIO dummy driver ID */ |
| 58 | 0, /* CX18_HW_CX23418 dummy driver ID */ |
| 59 | }; |
| 60 | |
| 61 | /* This array should match the CX18_HW_ defines */ |
| 62 | /* This might well become a card-specific array */ |
| 63 | static const u8 hw_bus[] = { |
| 64 | 0, |
| 65 | 0, |
| 66 | 0, |
| 67 | 0, /* CX18_HW_GPIO dummy driver ID */ |
| 68 | 0, /* CX18_HW_CX23418 dummy driver ID */ |
| 69 | }; |
| 70 | |
| 71 | /* This array should match the CX18_HW_ defines */ |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 72 | static const char * const hw_devicenames[] = { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 73 | "tuner", |
| 74 | "tveeprom", |
| 75 | "cs5345", |
| 76 | "gpio", |
| 77 | "cx23418", |
| 78 | }; |
| 79 | |
| 80 | int cx18_i2c_register(struct cx18 *cx, unsigned idx) |
| 81 | { |
| 82 | struct i2c_board_info info; |
| 83 | struct i2c_client *c; |
| 84 | u8 id, bus; |
| 85 | int i; |
| 86 | |
| 87 | CX18_DEBUG_I2C("i2c client register\n"); |
| 88 | if (idx >= ARRAY_SIZE(hw_driverids) || hw_driverids[idx] == 0) |
| 89 | return -1; |
| 90 | id = hw_driverids[idx]; |
| 91 | bus = hw_bus[idx]; |
| 92 | memset(&info, 0, sizeof(info)); |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 93 | strlcpy(info.type, hw_devicenames[idx], sizeof(info.type)); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 94 | info.addr = hw_addrs[idx]; |
| 95 | for (i = 0; i < I2C_CLIENTS_MAX; i++) |
| 96 | if (cx->i2c_clients[i] == NULL) |
| 97 | break; |
| 98 | |
| 99 | if (i == I2C_CLIENTS_MAX) { |
| 100 | CX18_ERR("insufficient room for new I2C client!\n"); |
| 101 | return -ENOMEM; |
| 102 | } |
| 103 | |
| 104 | if (id != I2C_DRIVERID_TUNER) { |
| 105 | c = i2c_new_device(&cx->i2c_adap[bus], &info); |
| 106 | if (c->driver == NULL) |
| 107 | i2c_unregister_device(c); |
| 108 | else |
| 109 | cx->i2c_clients[i] = c; |
| 110 | return cx->i2c_clients[i] ? 0 : -ENODEV; |
| 111 | } |
| 112 | |
| 113 | /* special tuner handling */ |
| 114 | c = i2c_new_probed_device(&cx->i2c_adap[1], &info, cx->card_i2c->radio); |
| 115 | if (c && c->driver == NULL) |
| 116 | i2c_unregister_device(c); |
| 117 | else if (c) |
| 118 | cx->i2c_clients[i++] = c; |
| 119 | c = i2c_new_probed_device(&cx->i2c_adap[1], &info, cx->card_i2c->demod); |
| 120 | if (c && c->driver == NULL) |
| 121 | i2c_unregister_device(c); |
| 122 | else if (c) |
| 123 | cx->i2c_clients[i++] = c; |
| 124 | c = i2c_new_probed_device(&cx->i2c_adap[1], &info, cx->card_i2c->tv); |
| 125 | if (c && c->driver == NULL) |
| 126 | i2c_unregister_device(c); |
| 127 | else if (c) |
| 128 | cx->i2c_clients[i++] = c; |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | static int attach_inform(struct i2c_client *client) |
| 133 | { |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | static int detach_inform(struct i2c_client *client) |
| 138 | { |
| 139 | int i; |
| 140 | struct cx18 *cx = (struct cx18 *)i2c_get_adapdata(client->adapter); |
| 141 | |
| 142 | CX18_DEBUG_I2C("i2c client detach\n"); |
| 143 | for (i = 0; i < I2C_CLIENTS_MAX; i++) { |
| 144 | if (cx->i2c_clients[i] == client) { |
| 145 | cx->i2c_clients[i] = NULL; |
| 146 | break; |
| 147 | } |
| 148 | } |
| 149 | CX18_DEBUG_I2C("i2c detach [client=%s,%s]\n", |
| 150 | client->name, (i < I2C_CLIENTS_MAX) ? "ok" : "failed"); |
| 151 | |
| 152 | return 0; |
| 153 | } |
| 154 | |
| 155 | static void cx18_setscl(void *data, int state) |
| 156 | { |
| 157 | struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; |
| 158 | int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; |
| 159 | u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR; |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 160 | u32 r = cx18_read_reg(cx, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 161 | |
| 162 | if (state) |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 163 | cx18_write_reg_sync(cx, r | SETSCL_BIT, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 164 | else |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 165 | cx18_write_reg_sync(cx, r & ~SETSCL_BIT, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | static void cx18_setsda(void *data, int state) |
| 169 | { |
| 170 | struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; |
| 171 | int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; |
| 172 | u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR; |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 173 | u32 r = cx18_read_reg(cx, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 174 | |
| 175 | if (state) |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 176 | cx18_write_reg_sync(cx, r | SETSDL_BIT, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 177 | else |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 178 | cx18_write_reg_sync(cx, r & ~SETSDL_BIT, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | static int cx18_getscl(void *data) |
| 182 | { |
| 183 | struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; |
| 184 | int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; |
| 185 | u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD; |
| 186 | |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 187 | return cx18_read_reg(cx, addr) & GETSCL_BIT; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | static int cx18_getsda(void *data) |
| 191 | { |
| 192 | struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; |
| 193 | int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; |
| 194 | u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD; |
| 195 | |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 196 | return cx18_read_reg(cx, addr) & GETSDL_BIT; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | /* template for i2c-bit-algo */ |
| 200 | static struct i2c_adapter cx18_i2c_adap_template = { |
| 201 | .name = "cx18 i2c driver", |
| 202 | .id = I2C_HW_B_CX2341X, |
| 203 | .algo = NULL, /* set by i2c-algo-bit */ |
| 204 | .algo_data = NULL, /* filled from template */ |
| 205 | .client_register = attach_inform, |
| 206 | .client_unregister = detach_inform, |
| 207 | .owner = THIS_MODULE, |
| 208 | }; |
| 209 | |
| 210 | #define CX18_SCL_PERIOD (10) /* usecs. 10 usec is period for a 100 KHz clock */ |
| 211 | #define CX18_ALGO_BIT_TIMEOUT (2) /* seconds */ |
| 212 | |
| 213 | static struct i2c_algo_bit_data cx18_i2c_algo_template = { |
| 214 | .setsda = cx18_setsda, |
| 215 | .setscl = cx18_setscl, |
| 216 | .getsda = cx18_getsda, |
| 217 | .getscl = cx18_getscl, |
| 218 | .udelay = CX18_SCL_PERIOD/2, /* 1/2 clock period in usec*/ |
| 219 | .timeout = CX18_ALGO_BIT_TIMEOUT*HZ /* jiffies */ |
| 220 | }; |
| 221 | |
| 222 | static struct i2c_client cx18_i2c_client_template = { |
| 223 | .name = "cx18 internal", |
| 224 | }; |
| 225 | |
| 226 | int cx18_call_i2c_client(struct cx18 *cx, int addr, unsigned cmd, void *arg) |
| 227 | { |
| 228 | struct i2c_client *client; |
| 229 | int retval; |
| 230 | int i; |
| 231 | |
| 232 | CX18_DEBUG_I2C("call_i2c_client addr=%02x\n", addr); |
| 233 | for (i = 0; i < I2C_CLIENTS_MAX; i++) { |
| 234 | client = cx->i2c_clients[i]; |
| 235 | if (client == NULL || client->driver == NULL || |
| 236 | client->driver->command == NULL) |
| 237 | continue; |
| 238 | if (addr == client->addr) { |
| 239 | retval = client->driver->command(client, cmd, arg); |
| 240 | return retval; |
| 241 | } |
| 242 | } |
| 243 | if (cmd != VIDIOC_G_CHIP_IDENT) |
| 244 | CX18_ERR("i2c addr 0x%02x not found for cmd 0x%x!\n", |
| 245 | addr, cmd); |
| 246 | return -ENODEV; |
| 247 | } |
| 248 | |
| 249 | /* Find the i2c device based on the driver ID and return |
| 250 | its i2c address or -ENODEV if no matching device was found. */ |
| 251 | static int cx18_i2c_id_addr(struct cx18 *cx, u32 id) |
| 252 | { |
| 253 | struct i2c_client *client; |
| 254 | int retval = -ENODEV; |
| 255 | int i; |
| 256 | |
| 257 | for (i = 0; i < I2C_CLIENTS_MAX; i++) { |
| 258 | client = cx->i2c_clients[i]; |
| 259 | if (client == NULL || client->driver == NULL) |
| 260 | continue; |
| 261 | if (id == client->driver->id) { |
| 262 | retval = client->addr; |
| 263 | break; |
| 264 | } |
| 265 | } |
| 266 | return retval; |
| 267 | } |
| 268 | |
| 269 | /* Find the i2c device name matching the DRIVERID */ |
| 270 | static const char *cx18_i2c_id_name(u32 id) |
| 271 | { |
| 272 | int i; |
| 273 | |
| 274 | for (i = 0; i < ARRAY_SIZE(hw_driverids); i++) |
| 275 | if (hw_driverids[i] == id) |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 276 | return hw_devicenames[i]; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 277 | return "unknown device"; |
| 278 | } |
| 279 | |
| 280 | /* Find the i2c device name matching the CX18_HW_ flag */ |
| 281 | static const char *cx18_i2c_hw_name(u32 hw) |
| 282 | { |
| 283 | int i; |
| 284 | |
| 285 | for (i = 0; i < ARRAY_SIZE(hw_driverids); i++) |
| 286 | if (1 << i == hw) |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 287 | return hw_devicenames[i]; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 288 | return "unknown device"; |
| 289 | } |
| 290 | |
| 291 | /* Find the i2c device matching the CX18_HW_ flag and return |
| 292 | its i2c address or -ENODEV if no matching device was found. */ |
| 293 | int cx18_i2c_hw_addr(struct cx18 *cx, u32 hw) |
| 294 | { |
| 295 | int i; |
| 296 | |
| 297 | for (i = 0; i < ARRAY_SIZE(hw_driverids); i++) |
| 298 | if (1 << i == hw) |
| 299 | return cx18_i2c_id_addr(cx, hw_driverids[i]); |
| 300 | return -ENODEV; |
| 301 | } |
| 302 | |
| 303 | /* Calls i2c device based on CX18_HW_ flag. If hw == 0, then do nothing. |
| 304 | If hw == CX18_HW_GPIO then call the gpio handler. */ |
| 305 | int cx18_i2c_hw(struct cx18 *cx, u32 hw, unsigned int cmd, void *arg) |
| 306 | { |
| 307 | int addr; |
| 308 | |
Sri Deevi | 03c2808 | 2008-06-21 11:06:44 -0300 | [diff] [blame] | 309 | if (hw == 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 310 | return 0; |
Sri Deevi | 03c2808 | 2008-06-21 11:06:44 -0300 | [diff] [blame] | 311 | |
| 312 | if (hw == CX18_HW_GPIO) |
| 313 | return cx18_gpio(cx, cmd, arg); |
| 314 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 315 | if (hw == CX18_HW_CX23418) |
| 316 | return cx18_av_cmd(cx, cmd, arg); |
| 317 | |
| 318 | addr = cx18_i2c_hw_addr(cx, hw); |
| 319 | if (addr < 0) { |
| 320 | CX18_ERR("i2c hardware 0x%08x (%s) not found for cmd 0x%x!\n", |
| 321 | hw, cx18_i2c_hw_name(hw), cmd); |
| 322 | return addr; |
| 323 | } |
| 324 | return cx18_call_i2c_client(cx, addr, cmd, arg); |
| 325 | } |
| 326 | |
| 327 | /* Calls i2c device based on I2C driver ID. */ |
| 328 | int cx18_i2c_id(struct cx18 *cx, u32 id, unsigned int cmd, void *arg) |
| 329 | { |
| 330 | int addr; |
| 331 | |
| 332 | addr = cx18_i2c_id_addr(cx, id); |
| 333 | if (addr < 0) { |
| 334 | if (cmd != VIDIOC_G_CHIP_IDENT) |
| 335 | CX18_ERR("i2c ID 0x%08x (%s) not found for cmd 0x%x!\n", |
| 336 | id, cx18_i2c_id_name(id), cmd); |
| 337 | return addr; |
| 338 | } |
| 339 | return cx18_call_i2c_client(cx, addr, cmd, arg); |
| 340 | } |
| 341 | |
| 342 | /* broadcast cmd for all I2C clients and for the gpio subsystem */ |
| 343 | void cx18_call_i2c_clients(struct cx18 *cx, unsigned int cmd, void *arg) |
| 344 | { |
| 345 | if (cx->i2c_adap[0].algo == NULL || cx->i2c_adap[1].algo == NULL) { |
| 346 | CX18_ERR("adapter is not set\n"); |
| 347 | return; |
| 348 | } |
| 349 | cx18_av_cmd(cx, cmd, arg); |
| 350 | i2c_clients_command(&cx->i2c_adap[0], cmd, arg); |
| 351 | i2c_clients_command(&cx->i2c_adap[1], cmd, arg); |
Sri Deevi | 03c2808 | 2008-06-21 11:06:44 -0300 | [diff] [blame] | 352 | if (cx->hw_flags & CX18_HW_GPIO) |
| 353 | cx18_gpio(cx, cmd, arg); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 354 | } |
| 355 | |
| 356 | /* init + register i2c algo-bit adapter */ |
| 357 | int init_cx18_i2c(struct cx18 *cx) |
| 358 | { |
| 359 | int i; |
| 360 | CX18_DEBUG_I2C("i2c init\n"); |
| 361 | |
Sri Deevi | 03c2808 | 2008-06-21 11:06:44 -0300 | [diff] [blame] | 362 | /* Sanity checks for the I2C hardware arrays. They must be the |
| 363 | * same size and GPIO/CX23418 must be the last entries. |
| 364 | */ |
| 365 | if (ARRAY_SIZE(hw_driverids) != ARRAY_SIZE(hw_addrs) || |
| 366 | ARRAY_SIZE(hw_devicenames) != ARRAY_SIZE(hw_addrs) || |
| 367 | CX18_HW_GPIO != (1 << (ARRAY_SIZE(hw_addrs) - 2)) || |
| 368 | CX18_HW_CX23418 != (1 << (ARRAY_SIZE(hw_addrs) - 1)) || |
| 369 | hw_driverids[ARRAY_SIZE(hw_addrs) - 1]) { |
| 370 | CX18_ERR("Mismatched I2C hardware arrays\n"); |
| 371 | return -ENODEV; |
| 372 | } |
| 373 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 374 | for (i = 0; i < 2; i++) { |
| 375 | memcpy(&cx->i2c_adap[i], &cx18_i2c_adap_template, |
| 376 | sizeof(struct i2c_adapter)); |
| 377 | memcpy(&cx->i2c_algo[i], &cx18_i2c_algo_template, |
| 378 | sizeof(struct i2c_algo_bit_data)); |
| 379 | cx->i2c_algo_cb_data[i].cx = cx; |
| 380 | cx->i2c_algo_cb_data[i].bus_index = i; |
| 381 | cx->i2c_algo[i].data = &cx->i2c_algo_cb_data[i]; |
| 382 | cx->i2c_adap[i].algo_data = &cx->i2c_algo[i]; |
| 383 | |
| 384 | sprintf(cx->i2c_adap[i].name + strlen(cx->i2c_adap[i].name), |
| 385 | " #%d-%d", cx->num, i); |
| 386 | i2c_set_adapdata(&cx->i2c_adap[i], cx); |
| 387 | |
| 388 | memcpy(&cx->i2c_client[i], &cx18_i2c_client_template, |
| 389 | sizeof(struct i2c_client)); |
| 390 | sprintf(cx->i2c_client[i].name + |
| 391 | strlen(cx->i2c_client[i].name), "%d", i); |
| 392 | cx->i2c_client[i].adapter = &cx->i2c_adap[i]; |
| 393 | cx->i2c_adap[i].dev.parent = &cx->dev->dev; |
| 394 | } |
| 395 | |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 396 | if (cx18_read_reg(cx, CX18_REG_I2C_2_WR) != 0x0003c02f) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 397 | /* Reset/Unreset I2C hardware block */ |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 398 | /* Clock select 220MHz */ |
| 399 | cx18_write_reg(cx, 0x10000000, 0xc71004); |
| 400 | /* Clock Enable */ |
| 401 | cx18_write_reg_sync(cx, 0x10001000, 0xc71024); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 402 | } |
| 403 | /* courtesy of Steven Toth <stoth@hauppauge.com> */ |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 404 | cx18_write_reg_sync(cx, 0x00c00000, 0xc7001c); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 405 | mdelay(10); |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 406 | cx18_write_reg_sync(cx, 0x00c000c0, 0xc7001c); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 407 | mdelay(10); |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 408 | cx18_write_reg_sync(cx, 0x00c00000, 0xc7001c); |
Andy Walls | 53ad02e | 2008-07-06 19:36:52 -0300 | [diff] [blame] | 409 | mdelay(10); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 410 | |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 411 | /* Set to edge-triggered intrs. */ |
| 412 | cx18_write_reg_sync(cx, 0x00c00000, 0xc730c8); |
| 413 | /* Clear any stale intrs */ |
| 414 | cx18_write_reg_sync(cx, 0x00c00000, 0xc730c4); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 415 | |
| 416 | /* Hw I2C1 Clock Freq ~100kHz */ |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 417 | cx18_write_reg_sync(cx, 0x00021c0f & ~4, CX18_REG_I2C_1_WR); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 418 | cx18_setscl(&cx->i2c_algo_cb_data[0], 1); |
| 419 | cx18_setsda(&cx->i2c_algo_cb_data[0], 1); |
| 420 | |
| 421 | /* Hw I2C2 Clock Freq ~100kHz */ |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 422 | cx18_write_reg_sync(cx, 0x00021c0f & ~4, CX18_REG_I2C_2_WR); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 423 | cx18_setscl(&cx->i2c_algo_cb_data[1], 1); |
| 424 | cx18_setsda(&cx->i2c_algo_cb_data[1], 1); |
| 425 | |
Andy Walls | 1f09e8a | 2008-06-22 01:27:00 -0300 | [diff] [blame] | 426 | cx18_reset_i2c_slaves_gpio(cx); |
| 427 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 428 | return i2c_bit_add_bus(&cx->i2c_adap[0]) || |
| 429 | i2c_bit_add_bus(&cx->i2c_adap[1]); |
| 430 | } |
| 431 | |
| 432 | void exit_cx18_i2c(struct cx18 *cx) |
| 433 | { |
| 434 | int i; |
| 435 | CX18_DEBUG_I2C("i2c exit\n"); |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame^] | 436 | cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_1_WR) | 4, |
| 437 | CX18_REG_I2C_1_WR); |
| 438 | cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_2_WR) | 4, |
| 439 | CX18_REG_I2C_2_WR); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 440 | |
| 441 | for (i = 0; i < 2; i++) { |
| 442 | i2c_del_adapter(&cx->i2c_adap[i]); |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | /* |
| 447 | Hauppauge HVR1600 should have: |
| 448 | 32 cx24227 |
| 449 | 98 unknown |
| 450 | a0 eeprom |
| 451 | c2 tuner |
| 452 | e? zilog ir |
| 453 | */ |