Dudley Du | c2c06c4 | 2015-07-20 16:53:30 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Cypress APA trackpad with I2C interface |
| 3 | * |
| 4 | * Author: Dudley Du <dudl@cypress.com> |
| 5 | * |
| 6 | * Copyright (C) 2015 Cypress Semiconductor, Inc. |
| 7 | * |
| 8 | * This file is subject to the terms and conditions of the GNU General Public |
| 9 | * License. See the file COPYING in the main directory of this archive for |
| 10 | * more details. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/delay.h> |
| 14 | #include <linux/i2c.h> |
| 15 | #include <linux/input.h> |
| 16 | #include <linux/input/mt.h> |
| 17 | #include <linux/mutex.h> |
| 18 | #include <linux/completion.h> |
| 19 | #include <linux/slab.h> |
| 20 | #include <asm/unaligned.h> |
| 21 | #include <linux/crc-itu-t.h> |
| 22 | #include "cyapa.h" |
| 23 | |
| 24 | |
| 25 | #define GEN6_ENABLE_CMD_IRQ 0x41 |
| 26 | #define GEN6_DISABLE_CMD_IRQ 0x42 |
| 27 | #define GEN6_ENABLE_DEV_IRQ 0x43 |
| 28 | #define GEN6_DISABLE_DEV_IRQ 0x44 |
| 29 | |
| 30 | #define GEN6_POWER_MODE_ACTIVE 0x01 |
| 31 | #define GEN6_POWER_MODE_LP_MODE1 0x02 |
| 32 | #define GEN6_POWER_MODE_LP_MODE2 0x03 |
| 33 | #define GEN6_POWER_MODE_BTN_ONLY 0x04 |
| 34 | |
| 35 | #define GEN6_SET_POWER_MODE_INTERVAL 0x47 |
| 36 | #define GEN6_GET_POWER_MODE_INTERVAL 0x48 |
| 37 | |
| 38 | #define GEN6_MAX_RX_NUM 14 |
| 39 | #define GEN6_RETRIEVE_DATA_ID_RX_ATTENURATOR_IDAC 0x00 |
| 40 | #define GEN6_RETRIEVE_DATA_ID_ATTENURATOR_TRIM 0x12 |
| 41 | |
| 42 | |
| 43 | struct pip_app_cmd_head { |
| 44 | __le16 addr; |
| 45 | __le16 length; |
| 46 | u8 report_id; |
| 47 | u8 resv; /* Reserved, must be 0 */ |
| 48 | u8 cmd_code; /* bit7: resv, set to 0; bit6~0: command code.*/ |
| 49 | } __packed; |
| 50 | |
| 51 | struct pip_app_resp_head { |
| 52 | __le16 length; |
| 53 | u8 report_id; |
| 54 | u8 resv; /* Reserved, must be 0 */ |
| 55 | u8 cmd_code; /* bit7: TGL; bit6~0: command code.*/ |
| 56 | /* |
| 57 | * The value of data_status can be the first byte of data or |
| 58 | * the command status or the unsupported command code depending on the |
| 59 | * requested command code. |
| 60 | */ |
| 61 | u8 data_status; |
| 62 | } __packed; |
| 63 | |
| 64 | struct pip_fixed_info { |
| 65 | u8 silicon_id_high; |
| 66 | u8 silicon_id_low; |
| 67 | u8 family_id; |
| 68 | }; |
| 69 | |
| 70 | static u8 pip_get_bl_info[] = { |
| 71 | 0x04, 0x00, 0x0B, 0x00, 0x40, 0x00, 0x01, 0x38, |
| 72 | 0x00, 0x00, 0x70, 0x9E, 0x17 |
| 73 | }; |
| 74 | |
| 75 | static bool cyapa_sort_pip_hid_descriptor_data(struct cyapa *cyapa, |
| 76 | u8 *buf, int len) |
| 77 | { |
| 78 | if (len != PIP_HID_DESCRIPTOR_SIZE) |
| 79 | return false; |
| 80 | |
| 81 | if (buf[PIP_RESP_REPORT_ID_OFFSET] == PIP_HID_APP_REPORT_ID || |
| 82 | buf[PIP_RESP_REPORT_ID_OFFSET] == PIP_HID_BL_REPORT_ID) |
| 83 | return true; |
| 84 | |
| 85 | return false; |
| 86 | } |
| 87 | |
| 88 | static int cyapa_get_pip_fixed_info(struct cyapa *cyapa, |
| 89 | struct pip_fixed_info *pip_info, bool is_bootloader) |
| 90 | { |
| 91 | u8 resp_data[PIP_READ_SYS_INFO_RESP_LENGTH]; |
| 92 | int resp_len; |
| 93 | u16 product_family; |
| 94 | int error; |
| 95 | |
| 96 | if (is_bootloader) { |
| 97 | /* Read Bootloader Information to determine Gen5 or Gen6. */ |
| 98 | resp_len = sizeof(resp_data); |
| 99 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, |
| 100 | pip_get_bl_info, sizeof(pip_get_bl_info), |
| 101 | resp_data, &resp_len, |
| 102 | 2000, cyapa_sort_tsg_pip_bl_resp_data, |
| 103 | false); |
| 104 | if (error || resp_len < PIP_BL_GET_INFO_RESP_LENGTH) |
| 105 | return error ? error : -EIO; |
| 106 | |
| 107 | pip_info->family_id = resp_data[8]; |
| 108 | pip_info->silicon_id_low = resp_data[10]; |
| 109 | pip_info->silicon_id_high = resp_data[11]; |
| 110 | |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | /* Get App System Information to determine Gen5 or Gen6. */ |
| 115 | resp_len = sizeof(resp_data); |
| 116 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, |
| 117 | pip_read_sys_info, PIP_READ_SYS_INFO_CMD_LENGTH, |
| 118 | resp_data, &resp_len, |
| 119 | 2000, cyapa_pip_sort_system_info_data, false); |
| 120 | if (error || resp_len < PIP_READ_SYS_INFO_RESP_LENGTH) |
| 121 | return error ? error : -EIO; |
| 122 | |
| 123 | product_family = get_unaligned_le16(&resp_data[7]); |
| 124 | if ((product_family & PIP_PRODUCT_FAMILY_MASK) != |
| 125 | PIP_PRODUCT_FAMILY_TRACKPAD) |
| 126 | return -EINVAL; |
| 127 | |
| 128 | pip_info->family_id = resp_data[19]; |
| 129 | pip_info->silicon_id_low = resp_data[21]; |
| 130 | pip_info->silicon_id_high = resp_data[22]; |
| 131 | |
| 132 | return 0; |
| 133 | |
| 134 | } |
| 135 | |
| 136 | int cyapa_pip_state_parse(struct cyapa *cyapa, u8 *reg_data, int len) |
| 137 | { |
| 138 | u8 cmd[] = { 0x01, 0x00}; |
| 139 | struct pip_fixed_info pip_info; |
| 140 | u8 resp_data[PIP_HID_DESCRIPTOR_SIZE]; |
| 141 | int resp_len; |
| 142 | bool is_bootloader; |
| 143 | int error; |
| 144 | |
| 145 | cyapa->state = CYAPA_STATE_NO_DEVICE; |
| 146 | |
| 147 | /* Try to wake from it deep sleep state if it is. */ |
| 148 | cyapa_pip_deep_sleep(cyapa, PIP_DEEP_SLEEP_STATE_ON); |
| 149 | |
| 150 | /* Empty the buffer queue to get fresh data with later commands. */ |
| 151 | cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); |
| 152 | |
| 153 | /* |
| 154 | * Read description info from trackpad device to determine running in |
| 155 | * APP mode or Bootloader mode. |
| 156 | */ |
| 157 | resp_len = PIP_HID_DESCRIPTOR_SIZE; |
| 158 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, |
| 159 | cmd, sizeof(cmd), |
| 160 | resp_data, &resp_len, |
| 161 | 300, |
| 162 | cyapa_sort_pip_hid_descriptor_data, |
| 163 | false); |
| 164 | if (error) |
| 165 | return error; |
| 166 | |
| 167 | if (resp_data[PIP_RESP_REPORT_ID_OFFSET] == PIP_HID_BL_REPORT_ID) |
| 168 | is_bootloader = true; |
| 169 | else if (resp_data[PIP_RESP_REPORT_ID_OFFSET] == PIP_HID_APP_REPORT_ID) |
| 170 | is_bootloader = false; |
| 171 | else |
| 172 | return -EAGAIN; |
| 173 | |
| 174 | /* Get PIP fixed information to determine Gen5 or Gen6. */ |
| 175 | memset(&pip_info, 0, sizeof(struct pip_fixed_info)); |
| 176 | error = cyapa_get_pip_fixed_info(cyapa, &pip_info, is_bootloader); |
| 177 | if (error) |
| 178 | return error; |
| 179 | |
| 180 | if (pip_info.family_id == 0x9B && pip_info.silicon_id_high == 0x0B) { |
| 181 | cyapa->gen = CYAPA_GEN6; |
| 182 | cyapa->state = is_bootloader ? CYAPA_STATE_GEN6_BL |
| 183 | : CYAPA_STATE_GEN6_APP; |
| 184 | } else if (pip_info.family_id == 0x91 && |
| 185 | pip_info.silicon_id_high == 0x02) { |
| 186 | cyapa->gen = CYAPA_GEN5; |
| 187 | cyapa->state = is_bootloader ? CYAPA_STATE_GEN5_BL |
| 188 | : CYAPA_STATE_GEN5_APP; |
| 189 | } |
| 190 | |
| 191 | return 0; |
| 192 | } |
| 193 | |
| 194 | static int cyapa_gen6_read_sys_info(struct cyapa *cyapa) |
| 195 | { |
| 196 | u8 resp_data[PIP_READ_SYS_INFO_RESP_LENGTH]; |
| 197 | int resp_len; |
| 198 | u16 product_family; |
| 199 | u8 rotat_align; |
| 200 | int error; |
| 201 | |
| 202 | /* Get App System Information to determine Gen5 or Gen6. */ |
| 203 | resp_len = sizeof(resp_data); |
| 204 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, |
| 205 | pip_read_sys_info, PIP_READ_SYS_INFO_CMD_LENGTH, |
| 206 | resp_data, &resp_len, |
| 207 | 2000, cyapa_pip_sort_system_info_data, false); |
| 208 | if (error || resp_len < sizeof(resp_data)) |
| 209 | return error ? error : -EIO; |
| 210 | |
| 211 | product_family = get_unaligned_le16(&resp_data[7]); |
| 212 | if ((product_family & PIP_PRODUCT_FAMILY_MASK) != |
| 213 | PIP_PRODUCT_FAMILY_TRACKPAD) |
| 214 | return -EINVAL; |
| 215 | |
| 216 | cyapa->platform_ver = (resp_data[67] >> PIP_BL_PLATFORM_VER_SHIFT) & |
| 217 | PIP_BL_PLATFORM_VER_MASK; |
| 218 | cyapa->fw_maj_ver = resp_data[9]; |
| 219 | cyapa->fw_min_ver = resp_data[10]; |
| 220 | |
| 221 | cyapa->electrodes_x = resp_data[33]; |
| 222 | cyapa->electrodes_y = resp_data[34]; |
| 223 | |
| 224 | cyapa->physical_size_x = get_unaligned_le16(&resp_data[35]) / 100; |
| 225 | cyapa->physical_size_y = get_unaligned_le16(&resp_data[37]) / 100; |
| 226 | |
| 227 | cyapa->max_abs_x = get_unaligned_le16(&resp_data[39]); |
| 228 | cyapa->max_abs_y = get_unaligned_le16(&resp_data[41]); |
| 229 | |
| 230 | cyapa->max_z = get_unaligned_le16(&resp_data[43]); |
| 231 | |
| 232 | cyapa->x_origin = resp_data[45] & 0x01; |
| 233 | cyapa->y_origin = resp_data[46] & 0x01; |
| 234 | |
| 235 | cyapa->btn_capability = (resp_data[70] << 3) & CAPABILITY_BTN_MASK; |
| 236 | |
| 237 | memcpy(&cyapa->product_id[0], &resp_data[51], 5); |
| 238 | cyapa->product_id[5] = '-'; |
| 239 | memcpy(&cyapa->product_id[6], &resp_data[56], 6); |
| 240 | cyapa->product_id[12] = '-'; |
| 241 | memcpy(&cyapa->product_id[13], &resp_data[62], 2); |
| 242 | cyapa->product_id[15] = '\0'; |
| 243 | |
Dudley Du | a487c03 | 2015-10-12 10:16:16 -0700 | [diff] [blame] | 244 | /* Get the number of Rx electrodes. */ |
Dudley Du | c2c06c4 | 2015-07-20 16:53:30 -0700 | [diff] [blame] | 245 | rotat_align = resp_data[68]; |
Dudley Du | a487c03 | 2015-10-12 10:16:16 -0700 | [diff] [blame] | 246 | cyapa->electrodes_rx = |
| 247 | rotat_align ? cyapa->electrodes_y : cyapa->electrodes_x; |
Dudley Du | c2c06c4 | 2015-07-20 16:53:30 -0700 | [diff] [blame] | 248 | cyapa->aligned_electrodes_rx = (cyapa->electrodes_rx + 3) & ~3u; |
| 249 | |
| 250 | if (!cyapa->electrodes_x || !cyapa->electrodes_y || |
| 251 | !cyapa->physical_size_x || !cyapa->physical_size_y || |
| 252 | !cyapa->max_abs_x || !cyapa->max_abs_y || !cyapa->max_z) |
| 253 | return -EINVAL; |
| 254 | |
| 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | static int cyapa_gen6_bl_read_app_info(struct cyapa *cyapa) |
| 259 | { |
| 260 | u8 resp_data[PIP_BL_APP_INFO_RESP_LENGTH]; |
| 261 | int resp_len; |
| 262 | int error; |
| 263 | |
| 264 | resp_len = sizeof(resp_data); |
| 265 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, |
| 266 | pip_bl_read_app_info, PIP_BL_READ_APP_INFO_CMD_LENGTH, |
| 267 | resp_data, &resp_len, |
| 268 | 500, cyapa_sort_tsg_pip_bl_resp_data, false); |
| 269 | if (error || resp_len < PIP_BL_APP_INFO_RESP_LENGTH || |
| 270 | !PIP_CMD_COMPLETE_SUCCESS(resp_data)) |
| 271 | return error ? error : -EIO; |
| 272 | |
| 273 | cyapa->fw_maj_ver = resp_data[8]; |
| 274 | cyapa->fw_min_ver = resp_data[9]; |
| 275 | |
| 276 | cyapa->platform_ver = (resp_data[12] >> PIP_BL_PLATFORM_VER_SHIFT) & |
| 277 | PIP_BL_PLATFORM_VER_MASK; |
| 278 | |
| 279 | memcpy(&cyapa->product_id[0], &resp_data[13], 5); |
| 280 | cyapa->product_id[5] = '-'; |
| 281 | memcpy(&cyapa->product_id[6], &resp_data[18], 6); |
| 282 | cyapa->product_id[12] = '-'; |
| 283 | memcpy(&cyapa->product_id[13], &resp_data[24], 2); |
| 284 | cyapa->product_id[15] = '\0'; |
| 285 | |
| 286 | return 0; |
| 287 | |
| 288 | } |
| 289 | |
| 290 | static int cyapa_gen6_config_dev_irq(struct cyapa *cyapa, u8 cmd_code) |
| 291 | { |
| 292 | u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, cmd_code }; |
| 293 | u8 resp_data[6]; |
| 294 | int resp_len; |
| 295 | int error; |
| 296 | |
| 297 | resp_len = sizeof(resp_data); |
| 298 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd), |
| 299 | resp_data, &resp_len, |
| 300 | 500, cyapa_sort_tsg_pip_app_resp_data, false); |
| 301 | if (error || !VALID_CMD_RESP_HEADER(resp_data, cmd_code) || |
| 302 | !PIP_CMD_COMPLETE_SUCCESS(resp_data) |
| 303 | ) |
| 304 | return error < 0 ? error : -EINVAL; |
| 305 | |
| 306 | return 0; |
| 307 | } |
| 308 | |
Dudley Du | 945525e | 2015-07-20 16:57:53 -0700 | [diff] [blame] | 309 | static int cyapa_gen6_set_proximity(struct cyapa *cyapa, bool enable) |
| 310 | { |
| 311 | int error; |
| 312 | |
| 313 | cyapa_gen6_config_dev_irq(cyapa, GEN6_DISABLE_CMD_IRQ); |
| 314 | error = cyapa_pip_set_proximity(cyapa, enable); |
| 315 | cyapa_gen6_config_dev_irq(cyapa, GEN6_ENABLE_CMD_IRQ); |
| 316 | |
| 317 | return error; |
| 318 | } |
| 319 | |
Dudley Du | c2c06c4 | 2015-07-20 16:53:30 -0700 | [diff] [blame] | 320 | static int cyapa_gen6_change_power_state(struct cyapa *cyapa, u8 power_mode) |
| 321 | { |
| 322 | u8 cmd[] = { 0x04, 0x00, 0x06, 0x00, 0x2f, 0x00, 0x46, power_mode }; |
| 323 | u8 resp_data[6]; |
| 324 | int resp_len; |
| 325 | int error; |
| 326 | |
| 327 | resp_len = sizeof(resp_data); |
| 328 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd), |
| 329 | resp_data, &resp_len, |
| 330 | 500, cyapa_sort_tsg_pip_app_resp_data, false); |
| 331 | if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x46)) |
| 332 | return error < 0 ? error : -EINVAL; |
| 333 | |
| 334 | /* New power state applied in device not match the set power state. */ |
| 335 | if (resp_data[5] != power_mode) |
| 336 | return -EAGAIN; |
| 337 | |
| 338 | return 0; |
| 339 | } |
| 340 | |
| 341 | static int cyapa_gen6_set_interval_setting(struct cyapa *cyapa, |
| 342 | struct gen6_interval_setting *interval_setting) |
| 343 | { |
| 344 | struct gen6_set_interval_cmd { |
| 345 | __le16 addr; |
| 346 | __le16 length; |
| 347 | u8 report_id; |
| 348 | u8 rsvd; /* Reserved, must be 0 */ |
| 349 | u8 cmd_code; |
| 350 | __le16 active_interval; |
| 351 | __le16 lp1_interval; |
| 352 | __le16 lp2_interval; |
| 353 | } __packed set_interval_cmd; |
| 354 | u8 resp_data[11]; |
| 355 | int resp_len; |
| 356 | int error; |
| 357 | |
| 358 | memset(&set_interval_cmd, 0, sizeof(set_interval_cmd)); |
| 359 | put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &set_interval_cmd.addr); |
| 360 | put_unaligned_le16(sizeof(set_interval_cmd) - 2, |
| 361 | &set_interval_cmd.length); |
| 362 | set_interval_cmd.report_id = PIP_APP_CMD_REPORT_ID; |
| 363 | set_interval_cmd.cmd_code = GEN6_SET_POWER_MODE_INTERVAL; |
| 364 | put_unaligned_le16(interval_setting->active_interval, |
| 365 | &set_interval_cmd.active_interval); |
| 366 | put_unaligned_le16(interval_setting->lp1_interval, |
| 367 | &set_interval_cmd.lp1_interval); |
| 368 | put_unaligned_le16(interval_setting->lp2_interval, |
| 369 | &set_interval_cmd.lp2_interval); |
| 370 | |
| 371 | resp_len = sizeof(resp_data); |
| 372 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, |
| 373 | (u8 *)&set_interval_cmd, sizeof(set_interval_cmd), |
| 374 | resp_data, &resp_len, |
| 375 | 500, cyapa_sort_tsg_pip_app_resp_data, false); |
| 376 | if (error || |
| 377 | !VALID_CMD_RESP_HEADER(resp_data, GEN6_SET_POWER_MODE_INTERVAL)) |
| 378 | return error < 0 ? error : -EINVAL; |
| 379 | |
| 380 | /* Get the real set intervals from response. */ |
| 381 | interval_setting->active_interval = get_unaligned_le16(&resp_data[5]); |
| 382 | interval_setting->lp1_interval = get_unaligned_le16(&resp_data[7]); |
| 383 | interval_setting->lp2_interval = get_unaligned_le16(&resp_data[9]); |
| 384 | |
| 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | static int cyapa_gen6_get_interval_setting(struct cyapa *cyapa, |
| 389 | struct gen6_interval_setting *interval_setting) |
| 390 | { |
| 391 | u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, |
| 392 | GEN6_GET_POWER_MODE_INTERVAL }; |
| 393 | u8 resp_data[11]; |
| 394 | int resp_len; |
| 395 | int error; |
| 396 | |
| 397 | resp_len = sizeof(resp_data); |
| 398 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd), |
| 399 | resp_data, &resp_len, |
| 400 | 500, cyapa_sort_tsg_pip_app_resp_data, false); |
| 401 | if (error || |
| 402 | !VALID_CMD_RESP_HEADER(resp_data, GEN6_GET_POWER_MODE_INTERVAL)) |
| 403 | return error < 0 ? error : -EINVAL; |
| 404 | |
| 405 | interval_setting->active_interval = get_unaligned_le16(&resp_data[5]); |
| 406 | interval_setting->lp1_interval = get_unaligned_le16(&resp_data[7]); |
| 407 | interval_setting->lp2_interval = get_unaligned_le16(&resp_data[9]); |
| 408 | |
| 409 | return 0; |
| 410 | } |
| 411 | |
| 412 | static int cyapa_gen6_deep_sleep(struct cyapa *cyapa, u8 state) |
| 413 | { |
| 414 | u8 ping[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x00 }; |
| 415 | |
| 416 | if (state == PIP_DEEP_SLEEP_STATE_ON) |
| 417 | /* |
| 418 | * Send ping command to notify device prepare for wake up |
| 419 | * when it's in deep sleep mode. At this time, device will |
| 420 | * response nothing except an I2C NAK. |
| 421 | */ |
| 422 | cyapa_i2c_pip_write(cyapa, ping, sizeof(ping)); |
| 423 | |
| 424 | return cyapa_pip_deep_sleep(cyapa, state); |
| 425 | } |
| 426 | |
| 427 | static int cyapa_gen6_set_power_mode(struct cyapa *cyapa, |
Dudley Du | 3cd4786 | 2016-03-04 11:23:09 -0800 | [diff] [blame] | 428 | u8 power_mode, u16 sleep_time, enum cyapa_pm_stage pm_stage) |
Dudley Du | c2c06c4 | 2015-07-20 16:53:30 -0700 | [diff] [blame] | 429 | { |
| 430 | struct device *dev = &cyapa->client->dev; |
| 431 | struct gen6_interval_setting *interval_setting = |
| 432 | &cyapa->gen6_interval_setting; |
| 433 | u8 lp_mode; |
| 434 | int error; |
| 435 | |
| 436 | if (cyapa->state != CYAPA_STATE_GEN6_APP) |
| 437 | return 0; |
| 438 | |
| 439 | if (PIP_DEV_GET_PWR_STATE(cyapa) == UNINIT_PWR_MODE) { |
| 440 | /* |
| 441 | * Assume TP in deep sleep mode when driver is loaded, |
| 442 | * avoid driver unload and reload command IO issue caused by TP |
| 443 | * has been set into deep sleep mode when unloading. |
| 444 | */ |
| 445 | PIP_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF); |
| 446 | } |
| 447 | |
| 448 | if (PIP_DEV_UNINIT_SLEEP_TIME(cyapa) && |
| 449 | PIP_DEV_GET_PWR_STATE(cyapa) != PWR_MODE_OFF) |
| 450 | PIP_DEV_SET_SLEEP_TIME(cyapa, UNINIT_SLEEP_TIME); |
| 451 | |
| 452 | if (PIP_DEV_GET_PWR_STATE(cyapa) == power_mode) { |
| 453 | if (power_mode == PWR_MODE_OFF || |
| 454 | power_mode == PWR_MODE_FULL_ACTIVE || |
| 455 | power_mode == PWR_MODE_BTN_ONLY || |
| 456 | PIP_DEV_GET_SLEEP_TIME(cyapa) == sleep_time) { |
| 457 | /* Has in correct power mode state, early return. */ |
| 458 | return 0; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | if (power_mode == PWR_MODE_OFF) { |
| 463 | cyapa_gen6_config_dev_irq(cyapa, GEN6_DISABLE_CMD_IRQ); |
| 464 | |
| 465 | error = cyapa_gen6_deep_sleep(cyapa, PIP_DEEP_SLEEP_STATE_OFF); |
| 466 | if (error) { |
| 467 | dev_err(dev, "enter deep sleep fail: %d\n", error); |
| 468 | return error; |
| 469 | } |
| 470 | |
| 471 | PIP_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF); |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | /* |
| 476 | * When trackpad in power off mode, it cannot change to other power |
| 477 | * state directly, must be wake up from sleep firstly, then |
| 478 | * continue to do next power sate change. |
| 479 | */ |
| 480 | if (PIP_DEV_GET_PWR_STATE(cyapa) == PWR_MODE_OFF) { |
| 481 | error = cyapa_gen6_deep_sleep(cyapa, PIP_DEEP_SLEEP_STATE_ON); |
| 482 | if (error) { |
| 483 | dev_err(dev, "deep sleep wake fail: %d\n", error); |
| 484 | return error; |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | /* |
| 489 | * Disable device assert interrupts for command response to avoid |
| 490 | * disturbing system suspending or hibernating process. |
| 491 | */ |
| 492 | cyapa_gen6_config_dev_irq(cyapa, GEN6_DISABLE_CMD_IRQ); |
| 493 | |
| 494 | if (power_mode == PWR_MODE_FULL_ACTIVE) { |
| 495 | error = cyapa_gen6_change_power_state(cyapa, |
| 496 | GEN6_POWER_MODE_ACTIVE); |
| 497 | if (error) { |
| 498 | dev_err(dev, "change to active fail: %d\n", error); |
| 499 | goto out; |
| 500 | } |
| 501 | |
| 502 | PIP_DEV_SET_PWR_STATE(cyapa, PWR_MODE_FULL_ACTIVE); |
| 503 | |
| 504 | /* Sync the interval setting from device. */ |
| 505 | cyapa_gen6_get_interval_setting(cyapa, interval_setting); |
| 506 | |
| 507 | } else if (power_mode == PWR_MODE_BTN_ONLY) { |
| 508 | error = cyapa_gen6_change_power_state(cyapa, |
| 509 | GEN6_POWER_MODE_BTN_ONLY); |
| 510 | if (error) { |
| 511 | dev_err(dev, "fail to button only mode: %d\n", error); |
| 512 | goto out; |
| 513 | } |
| 514 | |
| 515 | PIP_DEV_SET_PWR_STATE(cyapa, PWR_MODE_BTN_ONLY); |
| 516 | } else { |
| 517 | /* |
| 518 | * Gen6 internally supports to 2 low power scan interval time, |
| 519 | * so can help to switch power mode quickly. |
| 520 | * such as runtime suspend and system suspend. |
| 521 | */ |
| 522 | if (interval_setting->lp1_interval == sleep_time) { |
| 523 | lp_mode = GEN6_POWER_MODE_LP_MODE1; |
| 524 | } else if (interval_setting->lp2_interval == sleep_time) { |
| 525 | lp_mode = GEN6_POWER_MODE_LP_MODE2; |
| 526 | } else { |
| 527 | if (interval_setting->lp1_interval == 0) { |
| 528 | interval_setting->lp1_interval = sleep_time; |
| 529 | lp_mode = GEN6_POWER_MODE_LP_MODE1; |
| 530 | } else { |
| 531 | interval_setting->lp2_interval = sleep_time; |
| 532 | lp_mode = GEN6_POWER_MODE_LP_MODE2; |
| 533 | } |
| 534 | cyapa_gen6_set_interval_setting(cyapa, |
| 535 | interval_setting); |
| 536 | } |
| 537 | |
| 538 | error = cyapa_gen6_change_power_state(cyapa, lp_mode); |
| 539 | if (error) { |
| 540 | dev_err(dev, "set power state to 0x%02x failed: %d\n", |
| 541 | lp_mode, error); |
| 542 | goto out; |
| 543 | } |
| 544 | |
| 545 | PIP_DEV_SET_SLEEP_TIME(cyapa, sleep_time); |
| 546 | PIP_DEV_SET_PWR_STATE(cyapa, |
| 547 | cyapa_sleep_time_to_pwr_cmd(sleep_time)); |
| 548 | } |
| 549 | |
| 550 | out: |
| 551 | cyapa_gen6_config_dev_irq(cyapa, GEN6_ENABLE_CMD_IRQ); |
| 552 | return error; |
| 553 | } |
| 554 | |
| 555 | static int cyapa_gen6_initialize(struct cyapa *cyapa) |
| 556 | { |
| 557 | return 0; |
| 558 | } |
| 559 | |
| 560 | static int cyapa_pip_retrieve_data_structure(struct cyapa *cyapa, |
| 561 | u16 read_offset, u16 read_len, u8 data_id, |
| 562 | u8 *data, int *data_buf_lens) |
| 563 | { |
| 564 | struct retrieve_data_struct_cmd { |
| 565 | struct pip_app_cmd_head head; |
| 566 | __le16 read_offset; |
| 567 | __le16 read_length; |
| 568 | u8 data_id; |
| 569 | } __packed cmd; |
| 570 | u8 resp_data[GEN6_MAX_RX_NUM + 10]; |
| 571 | int resp_len; |
| 572 | int error; |
| 573 | |
| 574 | memset(&cmd, 0, sizeof(cmd)); |
| 575 | put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &cmd.head.addr); |
| 576 | put_unaligned_le16(sizeof(cmd), &cmd.head.length - 2); |
| 577 | cmd.head.report_id = PIP_APP_CMD_REPORT_ID; |
| 578 | cmd.head.cmd_code = PIP_RETRIEVE_DATA_STRUCTURE; |
| 579 | put_unaligned_le16(read_offset, &cmd.read_offset); |
| 580 | put_unaligned_le16(read_len, &cmd.read_length); |
| 581 | cmd.data_id = data_id; |
| 582 | |
| 583 | resp_len = sizeof(resp_data); |
| 584 | error = cyapa_i2c_pip_cmd_irq_sync(cyapa, |
| 585 | (u8 *)&cmd, sizeof(cmd), |
| 586 | resp_data, &resp_len, |
| 587 | 500, cyapa_sort_tsg_pip_app_resp_data, |
| 588 | true); |
| 589 | if (error || !PIP_CMD_COMPLETE_SUCCESS(resp_data) || |
| 590 | resp_data[6] != data_id || |
| 591 | !VALID_CMD_RESP_HEADER(resp_data, PIP_RETRIEVE_DATA_STRUCTURE)) |
| 592 | return (error < 0) ? error : -EAGAIN; |
| 593 | |
| 594 | read_len = get_unaligned_le16(&resp_data[7]); |
| 595 | if (*data_buf_lens < read_len) { |
| 596 | *data_buf_lens = read_len; |
| 597 | return -ENOBUFS; |
| 598 | } |
| 599 | |
| 600 | memcpy(data, &resp_data[10], read_len); |
| 601 | *data_buf_lens = read_len; |
| 602 | return 0; |
| 603 | } |
| 604 | |
| 605 | static ssize_t cyapa_gen6_show_baseline(struct device *dev, |
| 606 | struct device_attribute *attr, char *buf) |
| 607 | { |
| 608 | struct cyapa *cyapa = dev_get_drvdata(dev); |
| 609 | u8 data[GEN6_MAX_RX_NUM]; |
| 610 | int data_len; |
| 611 | int size = 0; |
| 612 | int i; |
| 613 | int error; |
| 614 | int resume_error; |
| 615 | |
| 616 | if (!cyapa_is_pip_app_mode(cyapa)) |
| 617 | return -EBUSY; |
| 618 | |
| 619 | /* 1. Suspend Scanning*/ |
| 620 | error = cyapa_pip_suspend_scanning(cyapa); |
| 621 | if (error) |
| 622 | return error; |
| 623 | |
| 624 | /* 2. IDAC and RX Attenuator Calibration Data (Center Frequency). */ |
| 625 | data_len = sizeof(data); |
| 626 | error = cyapa_pip_retrieve_data_structure(cyapa, 0, data_len, |
| 627 | GEN6_RETRIEVE_DATA_ID_RX_ATTENURATOR_IDAC, |
| 628 | data, &data_len); |
| 629 | if (error) |
| 630 | goto resume_scanning; |
| 631 | |
| 632 | size = scnprintf(buf, PAGE_SIZE, "%d %d %d %d %d %d ", |
| 633 | data[0], /* RX Attenuator Mutual */ |
| 634 | data[1], /* IDAC Mutual */ |
| 635 | data[2], /* RX Attenuator Self RX */ |
| 636 | data[3], /* IDAC Self RX */ |
| 637 | data[4], /* RX Attenuator Self TX */ |
| 638 | data[5] /* IDAC Self TX */ |
| 639 | ); |
| 640 | |
| 641 | /* 3. Read Attenuator Trim. */ |
| 642 | data_len = sizeof(data); |
| 643 | error = cyapa_pip_retrieve_data_structure(cyapa, 0, data_len, |
| 644 | GEN6_RETRIEVE_DATA_ID_ATTENURATOR_TRIM, |
| 645 | data, &data_len); |
| 646 | if (error) |
| 647 | goto resume_scanning; |
| 648 | |
| 649 | /* set attenuator trim values. */ |
| 650 | for (i = 0; i < data_len; i++) |
| 651 | size += scnprintf(buf + size, PAGE_SIZE - size, "%d ", data[i]); |
| 652 | size += scnprintf(buf + size, PAGE_SIZE - size, "\n"); |
| 653 | |
| 654 | resume_scanning: |
| 655 | /* 4. Resume Scanning*/ |
| 656 | resume_error = cyapa_pip_resume_scanning(cyapa); |
| 657 | if (resume_error || error) { |
| 658 | memset(buf, 0, PAGE_SIZE); |
| 659 | return resume_error ? resume_error : error; |
| 660 | } |
| 661 | |
| 662 | return size; |
| 663 | } |
| 664 | |
| 665 | static int cyapa_gen6_operational_check(struct cyapa *cyapa) |
| 666 | { |
| 667 | struct device *dev = &cyapa->client->dev; |
| 668 | int error; |
| 669 | |
| 670 | if (cyapa->gen != CYAPA_GEN6) |
| 671 | return -ENODEV; |
| 672 | |
| 673 | switch (cyapa->state) { |
| 674 | case CYAPA_STATE_GEN6_BL: |
| 675 | error = cyapa_pip_bl_exit(cyapa); |
| 676 | if (error) { |
| 677 | /* Try to update trackpad product information. */ |
| 678 | cyapa_gen6_bl_read_app_info(cyapa); |
| 679 | goto out; |
| 680 | } |
| 681 | |
| 682 | cyapa->state = CYAPA_STATE_GEN6_APP; |
| 683 | |
| 684 | case CYAPA_STATE_GEN6_APP: |
| 685 | /* |
| 686 | * If trackpad device in deep sleep mode, |
| 687 | * the app command will fail. |
| 688 | * So always try to reset trackpad device to full active when |
| 689 | * the device state is required. |
| 690 | */ |
| 691 | error = cyapa_gen6_set_power_mode(cyapa, |
Dudley Du | 3cd4786 | 2016-03-04 11:23:09 -0800 | [diff] [blame] | 692 | PWR_MODE_FULL_ACTIVE, 0, CYAPA_PM_ACTIVE); |
Dudley Du | c2c06c4 | 2015-07-20 16:53:30 -0700 | [diff] [blame] | 693 | if (error) |
| 694 | dev_warn(dev, "%s: failed to set power active mode.\n", |
| 695 | __func__); |
| 696 | |
Dudley Du | 945525e | 2015-07-20 16:57:53 -0700 | [diff] [blame] | 697 | /* By default, the trackpad proximity function is enabled. */ |
| 698 | error = cyapa_pip_set_proximity(cyapa, true); |
| 699 | if (error) |
| 700 | dev_warn(dev, "%s: failed to enable proximity.\n", |
| 701 | __func__); |
| 702 | |
Dudley Du | c2c06c4 | 2015-07-20 16:53:30 -0700 | [diff] [blame] | 703 | /* Get trackpad product information. */ |
| 704 | error = cyapa_gen6_read_sys_info(cyapa); |
| 705 | if (error) |
| 706 | goto out; |
| 707 | /* Only support product ID starting with CYTRA */ |
| 708 | if (memcmp(cyapa->product_id, product_id, |
| 709 | strlen(product_id)) != 0) { |
| 710 | dev_err(dev, "%s: unknown product ID (%s)\n", |
| 711 | __func__, cyapa->product_id); |
| 712 | error = -EINVAL; |
| 713 | } |
| 714 | break; |
| 715 | default: |
| 716 | error = -EINVAL; |
| 717 | } |
| 718 | |
| 719 | out: |
| 720 | return error; |
| 721 | } |
| 722 | |
| 723 | const struct cyapa_dev_ops cyapa_gen6_ops = { |
| 724 | .check_fw = cyapa_pip_check_fw, |
| 725 | .bl_enter = cyapa_pip_bl_enter, |
| 726 | .bl_initiate = cyapa_pip_bl_initiate, |
| 727 | .update_fw = cyapa_pip_do_fw_update, |
| 728 | .bl_activate = cyapa_pip_bl_activate, |
| 729 | .bl_deactivate = cyapa_pip_bl_deactivate, |
| 730 | |
| 731 | .show_baseline = cyapa_gen6_show_baseline, |
| 732 | .calibrate_store = cyapa_pip_do_calibrate, |
| 733 | |
| 734 | .initialize = cyapa_gen6_initialize, |
| 735 | |
| 736 | .state_parse = cyapa_pip_state_parse, |
| 737 | .operational_check = cyapa_gen6_operational_check, |
| 738 | |
| 739 | .irq_handler = cyapa_pip_irq_handler, |
| 740 | .irq_cmd_handler = cyapa_pip_irq_cmd_handler, |
| 741 | .sort_empty_output_data = cyapa_empty_pip_output_data, |
| 742 | .set_power_mode = cyapa_gen6_set_power_mode, |
Dudley Du | 945525e | 2015-07-20 16:57:53 -0700 | [diff] [blame] | 743 | |
| 744 | .set_proximity = cyapa_gen6_set_proximity, |
Dudley Du | c2c06c4 | 2015-07-20 16:53:30 -0700 | [diff] [blame] | 745 | }; |