Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 1 | /* |
| 2 | * chromeos_laptop.c - Driver to instantiate Chromebook i2c/smbus devices. |
| 3 | * |
| 4 | * Author : Benson Leung <bleung@chromium.org> |
| 5 | * |
| 6 | * Copyright (C) 2012 Google, Inc. |
| 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 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <linux/dmi.h> |
| 25 | #include <linux/i2c.h> |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 26 | #include <linux/i2c/atmel_mxt_ts.h> |
| 27 | #include <linux/input.h> |
| 28 | #include <linux/interrupt.h> |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 29 | #include <linux/module.h> |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 30 | #include <linux/platform_device.h> |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 31 | |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 32 | #define ATMEL_TP_I2C_ADDR 0x4b |
| 33 | #define ATMEL_TP_I2C_BL_ADDR 0x25 |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 34 | #define ATMEL_TS_I2C_ADDR 0x4a |
| 35 | #define ATMEL_TS_I2C_BL_ADDR 0x26 |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 36 | #define CYAPA_TP_I2C_ADDR 0x67 |
| 37 | #define ISL_ALS_I2C_ADDR 0x44 |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 38 | #define TAOS_ALS_I2C_ADDR 0x29 |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 39 | |
| 40 | static struct i2c_client *als; |
| 41 | static struct i2c_client *tp; |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 42 | static struct i2c_client *ts; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 43 | |
| 44 | const char *i2c_adapter_names[] = { |
| 45 | "SMBus I801 adapter", |
Benson Leung | 741bf0c | 2013-02-21 12:14:55 -0800 | [diff] [blame] | 46 | "i915 gmbus vga", |
| 47 | "i915 gmbus panel", |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 48 | }; |
| 49 | |
| 50 | /* Keep this enum consistent with i2c_adapter_names */ |
| 51 | enum i2c_adapter_type { |
| 52 | I2C_ADAPTER_SMBUS = 0, |
Benson Leung | 741bf0c | 2013-02-21 12:14:55 -0800 | [diff] [blame] | 53 | I2C_ADAPTER_VGADDC, |
| 54 | I2C_ADAPTER_PANEL, |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 55 | }; |
| 56 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 57 | struct i2c_peripheral { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 58 | int (*add)(enum i2c_adapter_type type); |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 59 | enum i2c_adapter_type type; |
| 60 | }; |
| 61 | |
| 62 | #define MAX_I2C_PERIPHERALS 3 |
| 63 | |
| 64 | struct chromeos_laptop { |
| 65 | struct i2c_peripheral i2c_peripherals[MAX_I2C_PERIPHERALS]; |
| 66 | }; |
| 67 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 68 | static struct chromeos_laptop *cros_laptop; |
| 69 | |
| 70 | static struct i2c_board_info cyapa_device = { |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 71 | I2C_BOARD_INFO("cyapa", CYAPA_TP_I2C_ADDR), |
| 72 | .flags = I2C_CLIENT_WAKE, |
| 73 | }; |
| 74 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 75 | static struct i2c_board_info isl_als_device = { |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 76 | I2C_BOARD_INFO("isl29018", ISL_ALS_I2C_ADDR), |
| 77 | }; |
| 78 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 79 | static struct i2c_board_info tsl2583_als_device = { |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 80 | I2C_BOARD_INFO("tsl2583", TAOS_ALS_I2C_ADDR), |
| 81 | }; |
| 82 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 83 | static struct i2c_board_info tsl2563_als_device = { |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 84 | I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR), |
| 85 | }; |
| 86 | |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 87 | static struct mxt_platform_data atmel_224s_tp_platform_data = { |
| 88 | .x_line = 18, |
| 89 | .y_line = 12, |
| 90 | .x_size = 102*20, |
| 91 | .y_size = 68*20, |
| 92 | .blen = 0x80, /* Gain setting is in upper 4 bits */ |
| 93 | .threshold = 0x32, |
| 94 | .voltage = 0, /* 3.3V */ |
| 95 | .orient = MXT_VERTICAL_FLIP, |
| 96 | .irqflags = IRQF_TRIGGER_FALLING, |
| 97 | .is_tp = true, |
| 98 | .key_map = { KEY_RESERVED, |
| 99 | KEY_RESERVED, |
| 100 | KEY_RESERVED, |
| 101 | BTN_LEFT }, |
| 102 | .config = NULL, |
| 103 | .config_length = 0, |
| 104 | }; |
| 105 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 106 | static struct i2c_board_info atmel_224s_tp_device = { |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 107 | I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR), |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 108 | .platform_data = &atmel_224s_tp_platform_data, |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 109 | .flags = I2C_CLIENT_WAKE, |
| 110 | }; |
| 111 | |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 112 | static struct mxt_platform_data atmel_1664s_platform_data = { |
| 113 | .x_line = 32, |
| 114 | .y_line = 50, |
| 115 | .x_size = 1700, |
| 116 | .y_size = 2560, |
| 117 | .blen = 0x89, /* Gain setting is in upper 4 bits */ |
| 118 | .threshold = 0x28, |
| 119 | .voltage = 0, /* 3.3V */ |
| 120 | .orient = MXT_ROTATED_90_COUNTER, |
| 121 | .irqflags = IRQF_TRIGGER_FALLING, |
| 122 | .is_tp = false, |
| 123 | .config = NULL, |
| 124 | .config_length = 0, |
| 125 | }; |
| 126 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 127 | static struct i2c_board_info atmel_1664s_device = { |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 128 | I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR), |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 129 | .platform_data = &atmel_1664s_platform_data, |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 130 | .flags = I2C_CLIENT_WAKE, |
| 131 | }; |
| 132 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 133 | static struct i2c_client *__add_probed_i2c_device( |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 134 | const char *name, |
| 135 | int bus, |
| 136 | struct i2c_board_info *info, |
| 137 | const unsigned short *addrs) |
| 138 | { |
| 139 | const struct dmi_device *dmi_dev; |
| 140 | const struct dmi_dev_onboard *dev_data; |
| 141 | struct i2c_adapter *adapter; |
| 142 | struct i2c_client *client; |
| 143 | |
| 144 | if (bus < 0) |
| 145 | return NULL; |
| 146 | /* |
| 147 | * If a name is specified, look for irq platform information stashed |
| 148 | * in DMI_DEV_TYPE_DEV_ONBOARD by the Chrome OS custom system firmware. |
| 149 | */ |
| 150 | if (name) { |
| 151 | dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, name, NULL); |
| 152 | if (!dmi_dev) { |
| 153 | pr_err("%s failed to dmi find device %s.\n", |
| 154 | __func__, |
| 155 | name); |
| 156 | return NULL; |
| 157 | } |
| 158 | dev_data = (struct dmi_dev_onboard *)dmi_dev->device_data; |
| 159 | if (!dev_data) { |
| 160 | pr_err("%s failed to get data from dmi for %s.\n", |
| 161 | __func__, name); |
| 162 | return NULL; |
| 163 | } |
| 164 | info->irq = dev_data->instance; |
| 165 | } |
| 166 | |
| 167 | adapter = i2c_get_adapter(bus); |
| 168 | if (!adapter) { |
| 169 | pr_err("%s failed to get i2c adapter %d.\n", __func__, bus); |
| 170 | return NULL; |
| 171 | } |
| 172 | |
| 173 | /* add the i2c device */ |
| 174 | client = i2c_new_probed_device(adapter, info, addrs, NULL); |
| 175 | if (!client) |
| 176 | pr_err("%s failed to register device %d-%02x\n", |
| 177 | __func__, bus, info->addr); |
| 178 | else |
| 179 | pr_debug("%s added i2c device %d-%02x\n", |
| 180 | __func__, bus, info->addr); |
| 181 | |
| 182 | i2c_put_adapter(adapter); |
| 183 | return client; |
| 184 | } |
| 185 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 186 | static int __find_i2c_adap(struct device *dev, void *data) |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 187 | { |
| 188 | const char *name = data; |
| 189 | static const char *prefix = "i2c-"; |
| 190 | struct i2c_adapter *adapter; |
| 191 | if (strncmp(dev_name(dev), prefix, strlen(prefix)) != 0) |
| 192 | return 0; |
| 193 | adapter = to_i2c_adapter(dev); |
| 194 | return (strncmp(adapter->name, name, strlen(name)) == 0); |
| 195 | } |
| 196 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 197 | static int find_i2c_adapter_num(enum i2c_adapter_type type) |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 198 | { |
| 199 | struct device *dev = NULL; |
| 200 | struct i2c_adapter *adapter; |
| 201 | const char *name = i2c_adapter_names[type]; |
| 202 | /* find the adapter by name */ |
| 203 | dev = bus_find_device(&i2c_bus_type, NULL, (void *)name, |
| 204 | __find_i2c_adap); |
| 205 | if (!dev) { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 206 | /* Adapters may appear later. Deferred probing will retry */ |
| 207 | pr_notice("%s: i2c adapter %s not found on system.\n", __func__, |
| 208 | name); |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 209 | return -ENODEV; |
| 210 | } |
| 211 | adapter = to_i2c_adapter(dev); |
| 212 | return adapter->nr; |
| 213 | } |
| 214 | |
| 215 | /* |
Benson Leung | bcaf089 | 2013-02-21 12:14:58 -0800 | [diff] [blame] | 216 | * Takes a list of addresses in addrs as such : |
| 217 | * { addr1, ... , addrn, I2C_CLIENT_END }; |
| 218 | * add_probed_i2c_device will use i2c_new_probed_device |
| 219 | * and probe for devices at all of the addresses listed. |
| 220 | * Returns NULL if no devices found. |
| 221 | * See Documentation/i2c/instantiating-devices for more information. |
| 222 | */ |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 223 | static struct i2c_client *add_probed_i2c_device( |
Benson Leung | bcaf089 | 2013-02-21 12:14:58 -0800 | [diff] [blame] | 224 | const char *name, |
| 225 | enum i2c_adapter_type type, |
| 226 | struct i2c_board_info *info, |
| 227 | const unsigned short *addrs) |
| 228 | { |
| 229 | return __add_probed_i2c_device(name, |
| 230 | find_i2c_adapter_num(type), |
| 231 | info, |
| 232 | addrs); |
| 233 | } |
| 234 | |
| 235 | /* |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 236 | * Probes for a device at a single address, the one provided by |
| 237 | * info->addr. |
| 238 | * Returns NULL if no device found. |
| 239 | */ |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 240 | static struct i2c_client *add_i2c_device(const char *name, |
Benson Leung | e7b2884 | 2013-02-21 12:14:56 -0800 | [diff] [blame] | 241 | enum i2c_adapter_type type, |
| 242 | struct i2c_board_info *info) |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 243 | { |
| 244 | const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END }; |
| 245 | return __add_probed_i2c_device(name, |
Benson Leung | e7b2884 | 2013-02-21 12:14:56 -0800 | [diff] [blame] | 246 | find_i2c_adapter_num(type), |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 247 | info, |
| 248 | addr_list); |
| 249 | } |
| 250 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 251 | static int setup_cyapa_tp(enum i2c_adapter_type type) |
Benson Leung | e7b2884 | 2013-02-21 12:14:56 -0800 | [diff] [blame] | 252 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 253 | if (tp) |
| 254 | return 0; |
| 255 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 256 | /* add cyapa touchpad */ |
| 257 | tp = add_i2c_device("trackpad", type, &cyapa_device); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 258 | return (!tp) ? -EAGAIN : 0; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 259 | } |
| 260 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 261 | static int setup_atmel_224s_tp(enum i2c_adapter_type type) |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 262 | { |
| 263 | const unsigned short addr_list[] = { ATMEL_TP_I2C_BL_ADDR, |
| 264 | ATMEL_TP_I2C_ADDR, |
| 265 | I2C_CLIENT_END }; |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 266 | if (tp) |
| 267 | return 0; |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 268 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 269 | /* add atmel mxt touchpad */ |
| 270 | tp = add_probed_i2c_device("trackpad", type, |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 271 | &atmel_224s_tp_device, addr_list); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 272 | return (!tp) ? -EAGAIN : 0; |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 273 | } |
| 274 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 275 | static int setup_atmel_1664s_ts(enum i2c_adapter_type type) |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 276 | { |
| 277 | const unsigned short addr_list[] = { ATMEL_TS_I2C_BL_ADDR, |
| 278 | ATMEL_TS_I2C_ADDR, |
| 279 | I2C_CLIENT_END }; |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 280 | if (ts) |
| 281 | return 0; |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 282 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 283 | /* add atmel mxt touch device */ |
| 284 | ts = add_probed_i2c_device("touchscreen", type, |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 285 | &atmel_1664s_device, addr_list); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 286 | return (!ts) ? -EAGAIN : 0; |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 287 | } |
| 288 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 289 | static int setup_isl29018_als(enum i2c_adapter_type type) |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 290 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 291 | if (als) |
| 292 | return 0; |
| 293 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 294 | /* add isl29018 light sensor */ |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 295 | als = add_i2c_device("lightsensor", type, &isl_als_device); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 296 | return (!als) ? -EAGAIN : 0; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 297 | } |
| 298 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 299 | static int setup_tsl2583_als(enum i2c_adapter_type type) |
Benson Leung | cc5c398 | 2013-02-21 12:14:57 -0800 | [diff] [blame] | 300 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 301 | if (als) |
| 302 | return 0; |
| 303 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 304 | /* add tsl2583 light sensor */ |
| 305 | als = add_i2c_device(NULL, type, &tsl2583_als_device); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 306 | return (!als) ? -EAGAIN : 0; |
Benson Leung | cc5c398 | 2013-02-21 12:14:57 -0800 | [diff] [blame] | 307 | } |
| 308 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 309 | static int setup_tsl2563_als(enum i2c_adapter_type type) |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 310 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 311 | if (als) |
| 312 | return 0; |
| 313 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 314 | /* add tsl2563 light sensor */ |
| 315 | als = add_i2c_device(NULL, type, &tsl2563_als_device); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 316 | return (!als) ? -EAGAIN : 0; |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 317 | } |
| 318 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 319 | static int __init chromeos_laptop_dmi_matched(const struct dmi_system_id *id) |
| 320 | { |
| 321 | cros_laptop = (void *)id->driver_data; |
| 322 | pr_debug("DMI Matched %s.\n", id->ident); |
| 323 | |
| 324 | /* Indicate to dmi_scan that processing is done. */ |
| 325 | return 1; |
| 326 | } |
| 327 | |
| 328 | static int chromeos_laptop_probe(struct platform_device *pdev) |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 329 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 330 | int i; |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 331 | int ret = 0; |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 332 | |
| 333 | for (i = 0; i < MAX_I2C_PERIPHERALS; i++) { |
| 334 | struct i2c_peripheral *i2c_dev; |
| 335 | |
| 336 | i2c_dev = &cros_laptop->i2c_peripherals[i]; |
| 337 | |
| 338 | /* No more peripherals. */ |
| 339 | if (i2c_dev->add == NULL) |
| 340 | break; |
| 341 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 342 | /* Add the device. Set -EPROBE_DEFER on any failure */ |
| 343 | if (i2c_dev->add(i2c_dev->type)) |
| 344 | ret = -EPROBE_DEFER; |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 345 | } |
| 346 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 347 | return ret; |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 348 | } |
| 349 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 350 | static struct chromeos_laptop samsung_series_5_550 = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 351 | .i2c_peripherals = { |
| 352 | /* Touchpad. */ |
| 353 | { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS }, |
| 354 | /* Light Sensor. */ |
| 355 | { .add = setup_isl29018_als, I2C_ADAPTER_SMBUS }, |
| 356 | }, |
| 357 | }; |
| 358 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 359 | static struct chromeos_laptop samsung_series_5 = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 360 | .i2c_peripherals = { |
| 361 | /* Light Sensor. */ |
| 362 | { .add = setup_tsl2583_als, I2C_ADAPTER_SMBUS }, |
| 363 | }, |
| 364 | }; |
| 365 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 366 | static struct chromeos_laptop chromebook_pixel = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 367 | .i2c_peripherals = { |
| 368 | /* Touch Screen. */ |
| 369 | { .add = setup_atmel_1664s_ts, I2C_ADAPTER_PANEL }, |
| 370 | /* Touchpad. */ |
| 371 | { .add = setup_atmel_224s_tp, I2C_ADAPTER_VGADDC }, |
| 372 | /* Light Sensor. */ |
| 373 | { .add = setup_isl29018_als, I2C_ADAPTER_PANEL }, |
| 374 | }, |
| 375 | }; |
| 376 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 377 | static struct chromeos_laptop acer_c7_chromebook = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 378 | .i2c_peripherals = { |
| 379 | /* Touchpad. */ |
| 380 | { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS }, |
| 381 | }, |
| 382 | }; |
| 383 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 384 | static struct chromeos_laptop acer_ac700 = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 385 | .i2c_peripherals = { |
| 386 | /* Light Sensor. */ |
| 387 | { .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS }, |
| 388 | }, |
| 389 | }; |
| 390 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 391 | static struct chromeos_laptop hp_pavilion_14_chromebook = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 392 | .i2c_peripherals = { |
| 393 | /* Touchpad. */ |
| 394 | { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS }, |
| 395 | }, |
| 396 | }; |
| 397 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 398 | static struct chromeos_laptop cr48 = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 399 | .i2c_peripherals = { |
| 400 | /* Light Sensor. */ |
| 401 | { .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS }, |
| 402 | }, |
| 403 | }; |
| 404 | |
| 405 | #define _CBDD(board_) \ |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 406 | .callback = chromeos_laptop_dmi_matched, \ |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 407 | .driver_data = (void *)&board_ |
| 408 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 409 | static struct dmi_system_id __initdata chromeos_laptop_dmi_table[] = { |
| 410 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 411 | .ident = "Samsung Series 5 550", |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 412 | .matches = { |
| 413 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"), |
| 414 | DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"), |
| 415 | }, |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 416 | _CBDD(samsung_series_5_550), |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 417 | }, |
| 418 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 419 | .ident = "Samsung Series 5", |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 420 | .matches = { |
| 421 | DMI_MATCH(DMI_PRODUCT_NAME, "Alex"), |
| 422 | }, |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 423 | _CBDD(samsung_series_5), |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 424 | }, |
| 425 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 426 | .ident = "Chromebook Pixel", |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 427 | .matches = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 428 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), |
| 429 | DMI_MATCH(DMI_PRODUCT_NAME, "Link"), |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 430 | }, |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 431 | _CBDD(chromebook_pixel), |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 432 | }, |
| 433 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 434 | .ident = "Acer C7 Chromebook", |
| 435 | .matches = { |
| 436 | DMI_MATCH(DMI_PRODUCT_NAME, "Parrot"), |
| 437 | }, |
| 438 | _CBDD(acer_c7_chromebook), |
| 439 | }, |
| 440 | { |
| 441 | .ident = "Acer AC700", |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 442 | .matches = { |
| 443 | DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"), |
| 444 | }, |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 445 | _CBDD(acer_ac700), |
| 446 | }, |
| 447 | { |
| 448 | .ident = "HP Pavilion 14 Chromebook", |
| 449 | .matches = { |
| 450 | DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"), |
| 451 | }, |
| 452 | _CBDD(hp_pavilion_14_chromebook), |
| 453 | }, |
| 454 | { |
| 455 | .ident = "Cr-48", |
| 456 | .matches = { |
| 457 | DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), |
| 458 | }, |
| 459 | _CBDD(cr48), |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 460 | }, |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 461 | { } |
| 462 | }; |
| 463 | MODULE_DEVICE_TABLE(dmi, chromeos_laptop_dmi_table); |
| 464 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 465 | static struct platform_device *cros_platform_device; |
| 466 | |
| 467 | static struct platform_driver cros_platform_driver = { |
| 468 | .driver = { |
| 469 | .name = "chromeos_laptop", |
| 470 | .owner = THIS_MODULE, |
| 471 | }, |
| 472 | .probe = chromeos_laptop_probe, |
| 473 | }; |
| 474 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 475 | static int __init chromeos_laptop_init(void) |
| 476 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 477 | int ret; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 478 | if (!dmi_check_system(chromeos_laptop_dmi_table)) { |
| 479 | pr_debug("%s unsupported system.\n", __func__); |
| 480 | return -ENODEV; |
| 481 | } |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 482 | |
| 483 | ret = platform_driver_register(&cros_platform_driver); |
| 484 | if (ret) |
| 485 | return ret; |
| 486 | |
| 487 | cros_platform_device = platform_device_alloc("chromeos_laptop", -1); |
| 488 | if (!cros_platform_device) { |
| 489 | ret = -ENOMEM; |
| 490 | goto fail_platform_device1; |
| 491 | } |
| 492 | |
| 493 | ret = platform_device_add(cros_platform_device); |
| 494 | if (ret) |
| 495 | goto fail_platform_device2; |
| 496 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 497 | return 0; |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame^] | 498 | |
| 499 | fail_platform_device2: |
| 500 | platform_device_put(cros_platform_device); |
| 501 | fail_platform_device1: |
| 502 | platform_driver_unregister(&cros_platform_driver); |
| 503 | return ret; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | static void __exit chromeos_laptop_exit(void) |
| 507 | { |
| 508 | if (als) |
| 509 | i2c_unregister_device(als); |
| 510 | if (tp) |
| 511 | i2c_unregister_device(tp); |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 512 | if (ts) |
| 513 | i2c_unregister_device(ts); |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 514 | } |
| 515 | |
| 516 | module_init(chromeos_laptop_init); |
| 517 | module_exit(chromeos_laptop_exit); |
| 518 | |
| 519 | MODULE_DESCRIPTION("Chrome OS Laptop driver"); |
| 520 | MODULE_AUTHOR("Benson Leung <bleung@chromium.org>"); |
| 521 | MODULE_LICENSE("GPL"); |