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> |
Andy Walls | 1ed9dcc | 2008-11-22 01:37:34 -0300 | [diff] [blame] | 7 | * Copyright (C) 2008 Andy Walls <awalls@radix.net> |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 22 | * 02111-1307 USA |
| 23 | */ |
| 24 | |
| 25 | #include "cx18-driver.h" |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 26 | #include "cx18-io.h" |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 27 | #include "cx18-cards.h" |
| 28 | #include "cx18-gpio.h" |
| 29 | #include "cx18-av-core.h" |
Adrian Bunk | 5051099 | 2008-05-05 18:25:22 -0300 | [diff] [blame] | 30 | #include "cx18-i2c.h" |
Andy Walls | ced0737 | 2008-11-02 10:59:04 -0300 | [diff] [blame] | 31 | #include "cx18-irq.h" |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 32 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 33 | #define CX18_REG_I2C_1_WR 0xf15000 |
| 34 | #define CX18_REG_I2C_1_RD 0xf15008 |
| 35 | #define CX18_REG_I2C_2_WR 0xf25100 |
| 36 | #define CX18_REG_I2C_2_RD 0xf25108 |
| 37 | |
| 38 | #define SETSCL_BIT 0x0001 |
| 39 | #define SETSDL_BIT 0x0002 |
| 40 | #define GETSCL_BIT 0x0004 |
| 41 | #define GETSDL_BIT 0x0008 |
| 42 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 43 | #define CX18_CS5345_I2C_ADDR 0x4c |
| 44 | |
| 45 | /* This array should match the CX18_HW_ defines */ |
| 46 | static const u8 hw_driverids[] = { |
| 47 | I2C_DRIVERID_TUNER, |
| 48 | I2C_DRIVERID_TVEEPROM, |
| 49 | I2C_DRIVERID_CS5345, |
| 50 | 0, /* CX18_HW_GPIO dummy driver ID */ |
| 51 | 0 /* CX18_HW_CX23418 dummy driver ID */ |
| 52 | }; |
| 53 | |
| 54 | /* This array should match the CX18_HW_ defines */ |
| 55 | static const u8 hw_addrs[] = { |
| 56 | 0, |
| 57 | 0, |
| 58 | CX18_CS5345_I2C_ADDR, |
| 59 | 0, /* CX18_HW_GPIO dummy driver ID */ |
| 60 | 0, /* CX18_HW_CX23418 dummy driver ID */ |
| 61 | }; |
| 62 | |
| 63 | /* This array should match the CX18_HW_ defines */ |
| 64 | /* This might well become a card-specific array */ |
| 65 | static const u8 hw_bus[] = { |
| 66 | 0, |
| 67 | 0, |
| 68 | 0, |
| 69 | 0, /* CX18_HW_GPIO dummy driver ID */ |
| 70 | 0, /* CX18_HW_CX23418 dummy driver ID */ |
| 71 | }; |
| 72 | |
| 73 | /* This array should match the CX18_HW_ defines */ |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 74 | static const char * const hw_devicenames[] = { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 75 | "tuner", |
| 76 | "tveeprom", |
| 77 | "cs5345", |
| 78 | "gpio", |
| 79 | "cx23418", |
| 80 | }; |
| 81 | |
| 82 | int cx18_i2c_register(struct cx18 *cx, unsigned idx) |
| 83 | { |
| 84 | struct i2c_board_info info; |
| 85 | struct i2c_client *c; |
| 86 | u8 id, bus; |
| 87 | int i; |
| 88 | |
| 89 | CX18_DEBUG_I2C("i2c client register\n"); |
| 90 | if (idx >= ARRAY_SIZE(hw_driverids) || hw_driverids[idx] == 0) |
| 91 | return -1; |
| 92 | id = hw_driverids[idx]; |
| 93 | bus = hw_bus[idx]; |
| 94 | memset(&info, 0, sizeof(info)); |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 95 | strlcpy(info.type, hw_devicenames[idx], sizeof(info.type)); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 96 | info.addr = hw_addrs[idx]; |
| 97 | for (i = 0; i < I2C_CLIENTS_MAX; i++) |
| 98 | if (cx->i2c_clients[i] == NULL) |
| 99 | break; |
| 100 | |
| 101 | if (i == I2C_CLIENTS_MAX) { |
| 102 | CX18_ERR("insufficient room for new I2C client!\n"); |
| 103 | return -ENOMEM; |
| 104 | } |
| 105 | |
| 106 | if (id != I2C_DRIVERID_TUNER) { |
| 107 | c = i2c_new_device(&cx->i2c_adap[bus], &info); |
| 108 | if (c->driver == NULL) |
| 109 | i2c_unregister_device(c); |
| 110 | else |
| 111 | cx->i2c_clients[i] = c; |
| 112 | return cx->i2c_clients[i] ? 0 : -ENODEV; |
| 113 | } |
| 114 | |
| 115 | /* special tuner handling */ |
| 116 | c = i2c_new_probed_device(&cx->i2c_adap[1], &info, cx->card_i2c->radio); |
| 117 | if (c && c->driver == NULL) |
| 118 | i2c_unregister_device(c); |
| 119 | else if (c) |
| 120 | cx->i2c_clients[i++] = c; |
| 121 | c = i2c_new_probed_device(&cx->i2c_adap[1], &info, cx->card_i2c->demod); |
| 122 | if (c && c->driver == NULL) |
| 123 | i2c_unregister_device(c); |
| 124 | else if (c) |
| 125 | cx->i2c_clients[i++] = c; |
| 126 | c = i2c_new_probed_device(&cx->i2c_adap[1], &info, cx->card_i2c->tv); |
| 127 | if (c && c->driver == NULL) |
| 128 | i2c_unregister_device(c); |
| 129 | else if (c) |
| 130 | cx->i2c_clients[i++] = c; |
| 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | static int attach_inform(struct i2c_client *client) |
| 135 | { |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | static int detach_inform(struct i2c_client *client) |
| 140 | { |
| 141 | int i; |
| 142 | struct cx18 *cx = (struct cx18 *)i2c_get_adapdata(client->adapter); |
| 143 | |
| 144 | CX18_DEBUG_I2C("i2c client detach\n"); |
| 145 | for (i = 0; i < I2C_CLIENTS_MAX; i++) { |
| 146 | if (cx->i2c_clients[i] == client) { |
| 147 | cx->i2c_clients[i] = NULL; |
| 148 | break; |
| 149 | } |
| 150 | } |
| 151 | CX18_DEBUG_I2C("i2c detach [client=%s,%s]\n", |
| 152 | client->name, (i < I2C_CLIENTS_MAX) ? "ok" : "failed"); |
| 153 | |
| 154 | return 0; |
| 155 | } |
| 156 | |
| 157 | static void cx18_setscl(void *data, int state) |
| 158 | { |
| 159 | struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; |
| 160 | int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; |
| 161 | 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] | 162 | u32 r = cx18_read_reg(cx, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 163 | |
| 164 | if (state) |
Andy Walls | 3f75c61 | 2008-11-16 23:33:41 -0300 | [diff] [blame] | 165 | cx18_write_reg(cx, r | SETSCL_BIT, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 166 | else |
Andy Walls | 3f75c61 | 2008-11-16 23:33:41 -0300 | [diff] [blame] | 167 | cx18_write_reg(cx, r & ~SETSCL_BIT, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | static void cx18_setsda(void *data, int state) |
| 171 | { |
| 172 | struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; |
| 173 | int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; |
| 174 | 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] | 175 | u32 r = cx18_read_reg(cx, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 176 | |
| 177 | if (state) |
Andy Walls | 3f75c61 | 2008-11-16 23:33:41 -0300 | [diff] [blame] | 178 | cx18_write_reg(cx, r | SETSDL_BIT, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 179 | else |
Andy Walls | 3f75c61 | 2008-11-16 23:33:41 -0300 | [diff] [blame] | 180 | cx18_write_reg(cx, r & ~SETSDL_BIT, addr); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | static int cx18_getscl(void *data) |
| 184 | { |
| 185 | struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; |
| 186 | int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; |
| 187 | u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD; |
| 188 | |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 189 | return cx18_read_reg(cx, addr) & GETSCL_BIT; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | static int cx18_getsda(void *data) |
| 193 | { |
| 194 | struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; |
| 195 | int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; |
| 196 | u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD; |
| 197 | |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 198 | return cx18_read_reg(cx, addr) & GETSDL_BIT; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | /* template for i2c-bit-algo */ |
| 202 | static struct i2c_adapter cx18_i2c_adap_template = { |
| 203 | .name = "cx18 i2c driver", |
| 204 | .id = I2C_HW_B_CX2341X, |
| 205 | .algo = NULL, /* set by i2c-algo-bit */ |
| 206 | .algo_data = NULL, /* filled from template */ |
| 207 | .client_register = attach_inform, |
| 208 | .client_unregister = detach_inform, |
| 209 | .owner = THIS_MODULE, |
| 210 | }; |
| 211 | |
| 212 | #define CX18_SCL_PERIOD (10) /* usecs. 10 usec is period for a 100 KHz clock */ |
| 213 | #define CX18_ALGO_BIT_TIMEOUT (2) /* seconds */ |
| 214 | |
| 215 | static struct i2c_algo_bit_data cx18_i2c_algo_template = { |
| 216 | .setsda = cx18_setsda, |
| 217 | .setscl = cx18_setscl, |
| 218 | .getsda = cx18_getsda, |
| 219 | .getscl = cx18_getscl, |
| 220 | .udelay = CX18_SCL_PERIOD/2, /* 1/2 clock period in usec*/ |
| 221 | .timeout = CX18_ALGO_BIT_TIMEOUT*HZ /* jiffies */ |
| 222 | }; |
| 223 | |
| 224 | static struct i2c_client cx18_i2c_client_template = { |
| 225 | .name = "cx18 internal", |
| 226 | }; |
| 227 | |
| 228 | int cx18_call_i2c_client(struct cx18 *cx, int addr, unsigned cmd, void *arg) |
| 229 | { |
| 230 | struct i2c_client *client; |
| 231 | int retval; |
| 232 | int i; |
| 233 | |
| 234 | CX18_DEBUG_I2C("call_i2c_client addr=%02x\n", addr); |
| 235 | for (i = 0; i < I2C_CLIENTS_MAX; i++) { |
| 236 | client = cx->i2c_clients[i]; |
| 237 | if (client == NULL || client->driver == NULL || |
| 238 | client->driver->command == NULL) |
| 239 | continue; |
| 240 | if (addr == client->addr) { |
| 241 | retval = client->driver->command(client, cmd, arg); |
| 242 | return retval; |
| 243 | } |
| 244 | } |
Hans Verkuil | aecde8b | 2008-12-30 07:14:19 -0300 | [diff] [blame^] | 245 | if (cmd != VIDIOC_DBG_G_CHIP_IDENT) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 246 | CX18_ERR("i2c addr 0x%02x not found for cmd 0x%x!\n", |
| 247 | addr, cmd); |
| 248 | return -ENODEV; |
| 249 | } |
| 250 | |
| 251 | /* Find the i2c device based on the driver ID and return |
| 252 | its i2c address or -ENODEV if no matching device was found. */ |
| 253 | static int cx18_i2c_id_addr(struct cx18 *cx, u32 id) |
| 254 | { |
| 255 | struct i2c_client *client; |
| 256 | int retval = -ENODEV; |
| 257 | int i; |
| 258 | |
| 259 | for (i = 0; i < I2C_CLIENTS_MAX; i++) { |
| 260 | client = cx->i2c_clients[i]; |
| 261 | if (client == NULL || client->driver == NULL) |
| 262 | continue; |
| 263 | if (id == client->driver->id) { |
| 264 | retval = client->addr; |
| 265 | break; |
| 266 | } |
| 267 | } |
| 268 | return retval; |
| 269 | } |
| 270 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 271 | /* Find the i2c device name matching the CX18_HW_ flag */ |
| 272 | static const char *cx18_i2c_hw_name(u32 hw) |
| 273 | { |
| 274 | int i; |
| 275 | |
| 276 | for (i = 0; i < ARRAY_SIZE(hw_driverids); i++) |
| 277 | if (1 << i == hw) |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 278 | return hw_devicenames[i]; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 279 | return "unknown device"; |
| 280 | } |
| 281 | |
| 282 | /* Find the i2c device matching the CX18_HW_ flag and return |
| 283 | its i2c address or -ENODEV if no matching device was found. */ |
| 284 | int cx18_i2c_hw_addr(struct cx18 *cx, u32 hw) |
| 285 | { |
| 286 | int i; |
| 287 | |
| 288 | for (i = 0; i < ARRAY_SIZE(hw_driverids); i++) |
| 289 | if (1 << i == hw) |
| 290 | return cx18_i2c_id_addr(cx, hw_driverids[i]); |
| 291 | return -ENODEV; |
| 292 | } |
| 293 | |
| 294 | /* Calls i2c device based on CX18_HW_ flag. If hw == 0, then do nothing. |
| 295 | If hw == CX18_HW_GPIO then call the gpio handler. */ |
| 296 | int cx18_i2c_hw(struct cx18 *cx, u32 hw, unsigned int cmd, void *arg) |
| 297 | { |
| 298 | int addr; |
| 299 | |
Sri Deevi | 03c2808 | 2008-06-21 11:06:44 -0300 | [diff] [blame] | 300 | if (hw == 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 301 | return 0; |
Sri Deevi | 03c2808 | 2008-06-21 11:06:44 -0300 | [diff] [blame] | 302 | |
| 303 | if (hw == CX18_HW_GPIO) |
| 304 | return cx18_gpio(cx, cmd, arg); |
| 305 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 306 | if (hw == CX18_HW_CX23418) |
| 307 | return cx18_av_cmd(cx, cmd, arg); |
| 308 | |
| 309 | addr = cx18_i2c_hw_addr(cx, hw); |
| 310 | if (addr < 0) { |
| 311 | CX18_ERR("i2c hardware 0x%08x (%s) not found for cmd 0x%x!\n", |
| 312 | hw, cx18_i2c_hw_name(hw), cmd); |
| 313 | return addr; |
| 314 | } |
| 315 | return cx18_call_i2c_client(cx, addr, cmd, arg); |
| 316 | } |
| 317 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 318 | /* broadcast cmd for all I2C clients and for the gpio subsystem */ |
| 319 | void cx18_call_i2c_clients(struct cx18 *cx, unsigned int cmd, void *arg) |
| 320 | { |
| 321 | if (cx->i2c_adap[0].algo == NULL || cx->i2c_adap[1].algo == NULL) { |
| 322 | CX18_ERR("adapter is not set\n"); |
| 323 | return; |
| 324 | } |
| 325 | cx18_av_cmd(cx, cmd, arg); |
| 326 | i2c_clients_command(&cx->i2c_adap[0], cmd, arg); |
| 327 | i2c_clients_command(&cx->i2c_adap[1], cmd, arg); |
Sri Deevi | 03c2808 | 2008-06-21 11:06:44 -0300 | [diff] [blame] | 328 | if (cx->hw_flags & CX18_HW_GPIO) |
| 329 | cx18_gpio(cx, cmd, arg); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | /* init + register i2c algo-bit adapter */ |
| 333 | int init_cx18_i2c(struct cx18 *cx) |
| 334 | { |
| 335 | int i; |
| 336 | CX18_DEBUG_I2C("i2c init\n"); |
| 337 | |
Sri Deevi | 03c2808 | 2008-06-21 11:06:44 -0300 | [diff] [blame] | 338 | /* Sanity checks for the I2C hardware arrays. They must be the |
| 339 | * same size and GPIO/CX23418 must be the last entries. |
| 340 | */ |
| 341 | if (ARRAY_SIZE(hw_driverids) != ARRAY_SIZE(hw_addrs) || |
| 342 | ARRAY_SIZE(hw_devicenames) != ARRAY_SIZE(hw_addrs) || |
| 343 | CX18_HW_GPIO != (1 << (ARRAY_SIZE(hw_addrs) - 2)) || |
| 344 | CX18_HW_CX23418 != (1 << (ARRAY_SIZE(hw_addrs) - 1)) || |
| 345 | hw_driverids[ARRAY_SIZE(hw_addrs) - 1]) { |
| 346 | CX18_ERR("Mismatched I2C hardware arrays\n"); |
| 347 | return -ENODEV; |
| 348 | } |
| 349 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 350 | for (i = 0; i < 2; i++) { |
| 351 | memcpy(&cx->i2c_adap[i], &cx18_i2c_adap_template, |
| 352 | sizeof(struct i2c_adapter)); |
| 353 | memcpy(&cx->i2c_algo[i], &cx18_i2c_algo_template, |
| 354 | sizeof(struct i2c_algo_bit_data)); |
| 355 | cx->i2c_algo_cb_data[i].cx = cx; |
| 356 | cx->i2c_algo_cb_data[i].bus_index = i; |
| 357 | cx->i2c_algo[i].data = &cx->i2c_algo_cb_data[i]; |
| 358 | cx->i2c_adap[i].algo_data = &cx->i2c_algo[i]; |
| 359 | |
| 360 | sprintf(cx->i2c_adap[i].name + strlen(cx->i2c_adap[i].name), |
| 361 | " #%d-%d", cx->num, i); |
| 362 | i2c_set_adapdata(&cx->i2c_adap[i], cx); |
| 363 | |
| 364 | memcpy(&cx->i2c_client[i], &cx18_i2c_client_template, |
| 365 | sizeof(struct i2c_client)); |
| 366 | sprintf(cx->i2c_client[i].name + |
| 367 | strlen(cx->i2c_client[i].name), "%d", i); |
| 368 | cx->i2c_client[i].adapter = &cx->i2c_adap[i]; |
| 369 | cx->i2c_adap[i].dev.parent = &cx->dev->dev; |
| 370 | } |
| 371 | |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 372 | if (cx18_read_reg(cx, CX18_REG_I2C_2_WR) != 0x0003c02f) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 373 | /* Reset/Unreset I2C hardware block */ |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 374 | /* Clock select 220MHz */ |
Andy Walls | ced0737 | 2008-11-02 10:59:04 -0300 | [diff] [blame] | 375 | cx18_write_reg_expect(cx, 0x10000000, 0xc71004, |
| 376 | 0x00000000, 0x10001000); |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 377 | /* Clock Enable */ |
Andy Walls | ced0737 | 2008-11-02 10:59:04 -0300 | [diff] [blame] | 378 | cx18_write_reg_expect(cx, 0x10001000, 0xc71024, |
| 379 | 0x00001000, 0x10001000); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 380 | } |
| 381 | /* courtesy of Steven Toth <stoth@hauppauge.com> */ |
Andy Walls | ced0737 | 2008-11-02 10:59:04 -0300 | [diff] [blame] | 382 | cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 383 | mdelay(10); |
Andy Walls | ced0737 | 2008-11-02 10:59:04 -0300 | [diff] [blame] | 384 | cx18_write_reg_expect(cx, 0x00c000c0, 0xc7001c, 0x000000c0, 0x00c000c0); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 385 | mdelay(10); |
Andy Walls | ced0737 | 2008-11-02 10:59:04 -0300 | [diff] [blame] | 386 | cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0); |
Andy Walls | 53ad02e | 2008-07-06 19:36:52 -0300 | [diff] [blame] | 387 | mdelay(10); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 388 | |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 389 | /* Set to edge-triggered intrs. */ |
Andy Walls | ced0737 | 2008-11-02 10:59:04 -0300 | [diff] [blame] | 390 | cx18_write_reg(cx, 0x00c00000, 0xc730c8); |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 391 | /* Clear any stale intrs */ |
Andy Walls | ced0737 | 2008-11-02 10:59:04 -0300 | [diff] [blame] | 392 | cx18_write_reg_expect(cx, HW2_I2C1_INT|HW2_I2C2_INT, HW2_INT_CLR_STATUS, |
| 393 | ~(HW2_I2C1_INT|HW2_I2C2_INT), HW2_I2C1_INT|HW2_I2C2_INT); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 394 | |
| 395 | /* Hw I2C1 Clock Freq ~100kHz */ |
Andy Walls | 3f75c61 | 2008-11-16 23:33:41 -0300 | [diff] [blame] | 396 | cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_1_WR); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 397 | cx18_setscl(&cx->i2c_algo_cb_data[0], 1); |
| 398 | cx18_setsda(&cx->i2c_algo_cb_data[0], 1); |
| 399 | |
| 400 | /* Hw I2C2 Clock Freq ~100kHz */ |
Andy Walls | 3f75c61 | 2008-11-16 23:33:41 -0300 | [diff] [blame] | 401 | cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_2_WR); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 402 | cx18_setscl(&cx->i2c_algo_cb_data[1], 1); |
| 403 | cx18_setsda(&cx->i2c_algo_cb_data[1], 1); |
| 404 | |
Andy Walls | 1f09e8a | 2008-06-22 01:27:00 -0300 | [diff] [blame] | 405 | cx18_reset_i2c_slaves_gpio(cx); |
| 406 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 407 | return i2c_bit_add_bus(&cx->i2c_adap[0]) || |
| 408 | i2c_bit_add_bus(&cx->i2c_adap[1]); |
| 409 | } |
| 410 | |
| 411 | void exit_cx18_i2c(struct cx18 *cx) |
| 412 | { |
| 413 | int i; |
| 414 | CX18_DEBUG_I2C("i2c exit\n"); |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 415 | cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_1_WR) | 4, |
| 416 | CX18_REG_I2C_1_WR); |
| 417 | cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_2_WR) | 4, |
| 418 | CX18_REG_I2C_2_WR); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 419 | |
| 420 | for (i = 0; i < 2; i++) { |
| 421 | i2c_del_adapter(&cx->i2c_adap[i]); |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | /* |
| 426 | Hauppauge HVR1600 should have: |
| 427 | 32 cx24227 |
| 428 | 98 unknown |
| 429 | a0 eeprom |
| 430 | c2 tuner |
| 431 | e? zilog ir |
| 432 | */ |