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> |
Nick Dyer | 7f3884f7 | 2015-08-04 16:36:29 -0700 | [diff] [blame] | 26 | #include <linux/platform_data/atmel_mxt_ts.h> |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 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 | |
Benson Leung | 5502486 | 2014-07-15 17:43:11 -0700 | [diff] [blame] | 40 | #define MAX_I2C_DEVICE_DEFERRALS 5 |
| 41 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 42 | static struct i2c_client *als; |
| 43 | static struct i2c_client *tp; |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 44 | static struct i2c_client *ts; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 45 | |
Olof Johansson | 6d3c1af | 2013-11-25 13:10:25 -0800 | [diff] [blame] | 46 | static const char *i2c_adapter_names[] = { |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 47 | "SMBus I801 adapter", |
Benson Leung | 741bf0c | 2013-02-21 12:14:55 -0800 | [diff] [blame] | 48 | "i915 gmbus vga", |
| 49 | "i915 gmbus panel", |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 50 | "i2c-designware-pci", |
| 51 | "i2c-designware-pci", |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 52 | }; |
| 53 | |
| 54 | /* Keep this enum consistent with i2c_adapter_names */ |
| 55 | enum i2c_adapter_type { |
| 56 | I2C_ADAPTER_SMBUS = 0, |
Benson Leung | 741bf0c | 2013-02-21 12:14:55 -0800 | [diff] [blame] | 57 | I2C_ADAPTER_VGADDC, |
| 58 | I2C_ADAPTER_PANEL, |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 59 | I2C_ADAPTER_DESIGNWARE_0, |
| 60 | I2C_ADAPTER_DESIGNWARE_1, |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 61 | }; |
| 62 | |
Benson Leung | 5502486 | 2014-07-15 17:43:11 -0700 | [diff] [blame] | 63 | enum i2c_peripheral_state { |
| 64 | UNPROBED = 0, |
| 65 | PROBED, |
| 66 | TIMEDOUT, |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 67 | }; |
| 68 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 69 | struct i2c_peripheral { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 70 | int (*add)(enum i2c_adapter_type type); |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 71 | enum i2c_adapter_type type; |
Benson Leung | 5502486 | 2014-07-15 17:43:11 -0700 | [diff] [blame] | 72 | enum i2c_peripheral_state state; |
| 73 | int tries; |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 74 | }; |
| 75 | |
| 76 | #define MAX_I2C_PERIPHERALS 3 |
| 77 | |
| 78 | struct chromeos_laptop { |
| 79 | struct i2c_peripheral i2c_peripherals[MAX_I2C_PERIPHERALS]; |
| 80 | }; |
| 81 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 82 | static struct chromeos_laptop *cros_laptop; |
| 83 | |
| 84 | static struct i2c_board_info cyapa_device = { |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 85 | I2C_BOARD_INFO("cyapa", CYAPA_TP_I2C_ADDR), |
| 86 | .flags = I2C_CLIENT_WAKE, |
| 87 | }; |
| 88 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 89 | static struct i2c_board_info isl_als_device = { |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 90 | I2C_BOARD_INFO("isl29018", ISL_ALS_I2C_ADDR), |
| 91 | }; |
| 92 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 93 | static struct i2c_board_info tsl2583_als_device = { |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 94 | I2C_BOARD_INFO("tsl2583", TAOS_ALS_I2C_ADDR), |
| 95 | }; |
| 96 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 97 | static struct i2c_board_info tsl2563_als_device = { |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 98 | I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR), |
| 99 | }; |
| 100 | |
Nick Dyer | fb5e4c3e | 2014-05-18 23:00:15 -0700 | [diff] [blame] | 101 | static int mxt_t19_keys[] = { |
| 102 | KEY_RESERVED, |
| 103 | KEY_RESERVED, |
| 104 | KEY_RESERVED, |
| 105 | KEY_RESERVED, |
| 106 | KEY_RESERVED, |
| 107 | BTN_LEFT |
| 108 | }; |
| 109 | |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 110 | static struct mxt_platform_data atmel_224s_tp_platform_data = { |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 111 | .irqflags = IRQF_TRIGGER_FALLING, |
Nick Dyer | fb5e4c3e | 2014-05-18 23:00:15 -0700 | [diff] [blame] | 112 | .t19_num_keys = ARRAY_SIZE(mxt_t19_keys), |
| 113 | .t19_keymap = mxt_t19_keys, |
Nick Dyer | 7f3884f7 | 2015-08-04 16:36:29 -0700 | [diff] [blame] | 114 | .suspend_mode = MXT_SUSPEND_T9_CTRL, |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 115 | }; |
| 116 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 117 | static struct i2c_board_info atmel_224s_tp_device = { |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 118 | I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR), |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 119 | .platform_data = &atmel_224s_tp_platform_data, |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 120 | .flags = I2C_CLIENT_WAKE, |
| 121 | }; |
| 122 | |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 123 | static struct mxt_platform_data atmel_1664s_platform_data = { |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 124 | .irqflags = IRQF_TRIGGER_FALLING, |
Nick Dyer | 7f3884f7 | 2015-08-04 16:36:29 -0700 | [diff] [blame] | 125 | .suspend_mode = MXT_SUSPEND_T9_CTRL, |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 126 | }; |
| 127 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 128 | static struct i2c_board_info atmel_1664s_device = { |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 129 | I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR), |
Benson Leung | 2ef3920 | 2013-03-07 19:43:34 -0800 | [diff] [blame] | 130 | .platform_data = &atmel_1664s_platform_data, |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 131 | .flags = I2C_CLIENT_WAKE, |
| 132 | }; |
| 133 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 134 | static struct i2c_client *__add_probed_i2c_device( |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 135 | const char *name, |
| 136 | int bus, |
| 137 | struct i2c_board_info *info, |
Dmitry Torokhov | 96cba9b | 2015-04-14 13:50:09 -0700 | [diff] [blame] | 138 | const unsigned short *alt_addr_list) |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 139 | { |
| 140 | const struct dmi_device *dmi_dev; |
| 141 | const struct dmi_dev_onboard *dev_data; |
| 142 | struct i2c_adapter *adapter; |
Dmitry Torokhov | 96cba9b | 2015-04-14 13:50:09 -0700 | [diff] [blame] | 143 | struct i2c_client *client = NULL; |
| 144 | const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END }; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 145 | |
| 146 | if (bus < 0) |
| 147 | return NULL; |
| 148 | /* |
| 149 | * If a name is specified, look for irq platform information stashed |
| 150 | * in DMI_DEV_TYPE_DEV_ONBOARD by the Chrome OS custom system firmware. |
| 151 | */ |
| 152 | if (name) { |
| 153 | dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, name, NULL); |
| 154 | if (!dmi_dev) { |
| 155 | pr_err("%s failed to dmi find device %s.\n", |
| 156 | __func__, |
| 157 | name); |
| 158 | return NULL; |
| 159 | } |
| 160 | dev_data = (struct dmi_dev_onboard *)dmi_dev->device_data; |
| 161 | if (!dev_data) { |
| 162 | pr_err("%s failed to get data from dmi for %s.\n", |
| 163 | __func__, name); |
| 164 | return NULL; |
| 165 | } |
| 166 | info->irq = dev_data->instance; |
| 167 | } |
| 168 | |
| 169 | adapter = i2c_get_adapter(bus); |
| 170 | if (!adapter) { |
| 171 | pr_err("%s failed to get i2c adapter %d.\n", __func__, bus); |
| 172 | return NULL; |
| 173 | } |
| 174 | |
Dmitry Torokhov | 96cba9b | 2015-04-14 13:50:09 -0700 | [diff] [blame] | 175 | /* |
| 176 | * Add the i2c device. If we can't detect it at the primary |
| 177 | * address we scan secondary addresses. In any case the client |
| 178 | * structure gets assigned primary address. |
| 179 | */ |
| 180 | client = i2c_new_probed_device(adapter, info, addr_list, NULL); |
| 181 | if (!client && alt_addr_list) { |
| 182 | struct i2c_board_info dummy_info = { |
| 183 | I2C_BOARD_INFO("dummy", info->addr), |
| 184 | }; |
| 185 | struct i2c_client *dummy; |
| 186 | |
| 187 | dummy = i2c_new_probed_device(adapter, &dummy_info, |
| 188 | alt_addr_list, NULL); |
| 189 | if (dummy) { |
| 190 | pr_debug("%s %d-%02x is probed at %02x\n", |
| 191 | __func__, bus, info->addr, dummy->addr); |
| 192 | i2c_unregister_device(dummy); |
| 193 | client = i2c_new_device(adapter, info); |
| 194 | } |
| 195 | } |
| 196 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 197 | if (!client) |
Benson Leung | 5502486 | 2014-07-15 17:43:11 -0700 | [diff] [blame] | 198 | pr_notice("%s failed to register device %d-%02x\n", |
| 199 | __func__, bus, info->addr); |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 200 | else |
| 201 | pr_debug("%s added i2c device %d-%02x\n", |
| 202 | __func__, bus, info->addr); |
| 203 | |
| 204 | i2c_put_adapter(adapter); |
| 205 | return client; |
| 206 | } |
| 207 | |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 208 | struct i2c_lookup { |
| 209 | const char *name; |
| 210 | int instance; |
| 211 | int n; |
| 212 | }; |
| 213 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 214 | static int __find_i2c_adap(struct device *dev, void *data) |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 215 | { |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 216 | struct i2c_lookup *lookup = data; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 217 | static const char *prefix = "i2c-"; |
| 218 | struct i2c_adapter *adapter; |
Robin Schroer | 49c68a2 | 2014-05-29 20:45:07 +0200 | [diff] [blame] | 219 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 220 | if (strncmp(dev_name(dev), prefix, strlen(prefix)) != 0) |
| 221 | return 0; |
| 222 | adapter = to_i2c_adapter(dev); |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 223 | if (strncmp(adapter->name, lookup->name, strlen(lookup->name)) == 0 && |
| 224 | lookup->n++ == lookup->instance) |
| 225 | return 1; |
| 226 | return 0; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 227 | } |
| 228 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 229 | static int find_i2c_adapter_num(enum i2c_adapter_type type) |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 230 | { |
| 231 | struct device *dev = NULL; |
| 232 | struct i2c_adapter *adapter; |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 233 | struct i2c_lookup lookup; |
| 234 | |
| 235 | memset(&lookup, 0, sizeof(lookup)); |
| 236 | lookup.name = i2c_adapter_names[type]; |
| 237 | lookup.instance = (type == I2C_ADAPTER_DESIGNWARE_1) ? 1 : 0; |
| 238 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 239 | /* find the adapter by name */ |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 240 | dev = bus_find_device(&i2c_bus_type, NULL, &lookup, __find_i2c_adap); |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 241 | if (!dev) { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 242 | /* Adapters may appear later. Deferred probing will retry */ |
| 243 | pr_notice("%s: i2c adapter %s not found on system.\n", __func__, |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 244 | lookup.name); |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 245 | return -ENODEV; |
| 246 | } |
| 247 | adapter = to_i2c_adapter(dev); |
| 248 | return adapter->nr; |
| 249 | } |
| 250 | |
| 251 | /* |
Benson Leung | bcaf089 | 2013-02-21 12:14:58 -0800 | [diff] [blame] | 252 | * Takes a list of addresses in addrs as such : |
| 253 | * { addr1, ... , addrn, I2C_CLIENT_END }; |
| 254 | * add_probed_i2c_device will use i2c_new_probed_device |
| 255 | * and probe for devices at all of the addresses listed. |
| 256 | * Returns NULL if no devices found. |
| 257 | * See Documentation/i2c/instantiating-devices for more information. |
| 258 | */ |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 259 | static struct i2c_client *add_probed_i2c_device( |
Benson Leung | bcaf089 | 2013-02-21 12:14:58 -0800 | [diff] [blame] | 260 | const char *name, |
| 261 | enum i2c_adapter_type type, |
| 262 | struct i2c_board_info *info, |
| 263 | const unsigned short *addrs) |
| 264 | { |
| 265 | return __add_probed_i2c_device(name, |
| 266 | find_i2c_adapter_num(type), |
| 267 | info, |
| 268 | addrs); |
| 269 | } |
| 270 | |
| 271 | /* |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 272 | * Probes for a device at a single address, the one provided by |
| 273 | * info->addr. |
| 274 | * Returns NULL if no device found. |
| 275 | */ |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 276 | static struct i2c_client *add_i2c_device(const char *name, |
Benson Leung | e7b2884 | 2013-02-21 12:14:56 -0800 | [diff] [blame] | 277 | enum i2c_adapter_type type, |
| 278 | struct i2c_board_info *info) |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 279 | { |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 280 | return __add_probed_i2c_device(name, |
Benson Leung | e7b2884 | 2013-02-21 12:14:56 -0800 | [diff] [blame] | 281 | find_i2c_adapter_num(type), |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 282 | info, |
Dmitry Torokhov | 96cba9b | 2015-04-14 13:50:09 -0700 | [diff] [blame] | 283 | NULL); |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 284 | } |
| 285 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 286 | static int setup_cyapa_tp(enum i2c_adapter_type type) |
Benson Leung | e7b2884 | 2013-02-21 12:14:56 -0800 | [diff] [blame] | 287 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 288 | if (tp) |
| 289 | return 0; |
| 290 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 291 | /* add cyapa touchpad */ |
| 292 | tp = add_i2c_device("trackpad", type, &cyapa_device); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 293 | return (!tp) ? -EAGAIN : 0; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 294 | } |
| 295 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 296 | static int setup_atmel_224s_tp(enum i2c_adapter_type type) |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 297 | { |
| 298 | const unsigned short addr_list[] = { ATMEL_TP_I2C_BL_ADDR, |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 299 | I2C_CLIENT_END }; |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 300 | if (tp) |
| 301 | return 0; |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 302 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 303 | /* add atmel mxt touchpad */ |
| 304 | tp = add_probed_i2c_device("trackpad", type, |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 305 | &atmel_224s_tp_device, addr_list); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 306 | return (!tp) ? -EAGAIN : 0; |
Benson Leung | 8e1ad4c | 2013-02-21 12:14:59 -0800 | [diff] [blame] | 307 | } |
| 308 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 309 | static int setup_atmel_1664s_ts(enum i2c_adapter_type type) |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 310 | { |
| 311 | const unsigned short addr_list[] = { ATMEL_TS_I2C_BL_ADDR, |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 312 | I2C_CLIENT_END }; |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 313 | if (ts) |
| 314 | return 0; |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 315 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 316 | /* add atmel mxt touch device */ |
| 317 | ts = add_probed_i2c_device("touchscreen", type, |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 318 | &atmel_1664s_device, addr_list); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 319 | return (!ts) ? -EAGAIN : 0; |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 320 | } |
| 321 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 322 | static int setup_isl29018_als(enum i2c_adapter_type type) |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 323 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 324 | if (als) |
| 325 | return 0; |
| 326 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 327 | /* add isl29018 light sensor */ |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 328 | als = add_i2c_device("lightsensor", type, &isl_als_device); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 329 | return (!als) ? -EAGAIN : 0; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 330 | } |
| 331 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 332 | static int setup_tsl2583_als(enum i2c_adapter_type type) |
Benson Leung | cc5c398 | 2013-02-21 12:14:57 -0800 | [diff] [blame] | 333 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 334 | if (als) |
| 335 | return 0; |
| 336 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 337 | /* add tsl2583 light sensor */ |
| 338 | als = add_i2c_device(NULL, type, &tsl2583_als_device); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 339 | return (!als) ? -EAGAIN : 0; |
Benson Leung | cc5c398 | 2013-02-21 12:14:57 -0800 | [diff] [blame] | 340 | } |
| 341 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 342 | static int setup_tsl2563_als(enum i2c_adapter_type type) |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 343 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 344 | if (als) |
| 345 | return 0; |
| 346 | |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 347 | /* add tsl2563 light sensor */ |
| 348 | als = add_i2c_device(NULL, type, &tsl2563_als_device); |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 349 | return (!als) ? -EAGAIN : 0; |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 350 | } |
| 351 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 352 | static int __init chromeos_laptop_dmi_matched(const struct dmi_system_id *id) |
| 353 | { |
| 354 | cros_laptop = (void *)id->driver_data; |
| 355 | pr_debug("DMI Matched %s.\n", id->ident); |
| 356 | |
| 357 | /* Indicate to dmi_scan that processing is done. */ |
| 358 | return 1; |
| 359 | } |
| 360 | |
| 361 | static int chromeos_laptop_probe(struct platform_device *pdev) |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 362 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 363 | int i; |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 364 | int ret = 0; |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 365 | |
| 366 | for (i = 0; i < MAX_I2C_PERIPHERALS; i++) { |
| 367 | struct i2c_peripheral *i2c_dev; |
| 368 | |
| 369 | i2c_dev = &cros_laptop->i2c_peripherals[i]; |
| 370 | |
| 371 | /* No more peripherals. */ |
| 372 | if (i2c_dev->add == NULL) |
| 373 | break; |
| 374 | |
Benson Leung | 5502486 | 2014-07-15 17:43:11 -0700 | [diff] [blame] | 375 | if (i2c_dev->state == TIMEDOUT || i2c_dev->state == PROBED) |
| 376 | continue; |
| 377 | |
| 378 | /* |
| 379 | * Check that the i2c adapter is present. |
| 380 | * -EPROBE_DEFER if missing as the adapter may appear much |
| 381 | * later. |
| 382 | */ |
| 383 | if (find_i2c_adapter_num(i2c_dev->type) == -ENODEV) { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 384 | ret = -EPROBE_DEFER; |
Benson Leung | 5502486 | 2014-07-15 17:43:11 -0700 | [diff] [blame] | 385 | continue; |
| 386 | } |
| 387 | |
| 388 | /* Add the device. */ |
| 389 | if (i2c_dev->add(i2c_dev->type) == -EAGAIN) { |
| 390 | /* |
| 391 | * Set -EPROBE_DEFER a limited num of times |
| 392 | * if device is not successfully added. |
| 393 | */ |
| 394 | if (++i2c_dev->tries < MAX_I2C_DEVICE_DEFERRALS) { |
| 395 | ret = -EPROBE_DEFER; |
| 396 | } else { |
| 397 | /* Ran out of tries. */ |
| 398 | pr_notice("%s: Ran out of tries for device.\n", |
| 399 | __func__); |
| 400 | i2c_dev->state = TIMEDOUT; |
| 401 | } |
| 402 | } else { |
| 403 | i2c_dev->state = PROBED; |
| 404 | } |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 405 | } |
| 406 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 407 | return ret; |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 408 | } |
| 409 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 410 | static struct chromeos_laptop samsung_series_5_550 = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 411 | .i2c_peripherals = { |
| 412 | /* Touchpad. */ |
| 413 | { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS }, |
| 414 | /* Light Sensor. */ |
| 415 | { .add = setup_isl29018_als, I2C_ADAPTER_SMBUS }, |
| 416 | }, |
| 417 | }; |
| 418 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 419 | static struct chromeos_laptop samsung_series_5 = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 420 | .i2c_peripherals = { |
| 421 | /* Light Sensor. */ |
| 422 | { .add = setup_tsl2583_als, I2C_ADAPTER_SMBUS }, |
| 423 | }, |
| 424 | }; |
| 425 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 426 | static struct chromeos_laptop chromebook_pixel = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 427 | .i2c_peripherals = { |
| 428 | /* Touch Screen. */ |
| 429 | { .add = setup_atmel_1664s_ts, I2C_ADAPTER_PANEL }, |
| 430 | /* Touchpad. */ |
| 431 | { .add = setup_atmel_224s_tp, I2C_ADAPTER_VGADDC }, |
| 432 | /* Light Sensor. */ |
| 433 | { .add = setup_isl29018_als, I2C_ADAPTER_PANEL }, |
| 434 | }, |
| 435 | }; |
| 436 | |
Benson Leung | 5ea9567 | 2014-06-17 14:02:01 -0700 | [diff] [blame] | 437 | static struct chromeos_laptop hp_chromebook_14 = { |
| 438 | .i2c_peripherals = { |
| 439 | /* Touchpad. */ |
| 440 | { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 }, |
| 441 | }, |
| 442 | }; |
| 443 | |
Mohammed Habibulla | 0e1e5e5 | 2014-06-17 14:02:02 -0700 | [diff] [blame] | 444 | static struct chromeos_laptop dell_chromebook_11 = { |
| 445 | .i2c_peripherals = { |
| 446 | /* Touchpad. */ |
| 447 | { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 }, |
| 448 | }, |
| 449 | }; |
| 450 | |
Gene Chen | 963cb6f | 2014-06-17 14:02:03 -0700 | [diff] [blame] | 451 | static struct chromeos_laptop toshiba_cb35 = { |
| 452 | .i2c_peripherals = { |
| 453 | /* Touchpad. */ |
| 454 | { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 }, |
| 455 | }, |
| 456 | }; |
| 457 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 458 | static struct chromeos_laptop acer_c7_chromebook = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 459 | .i2c_peripherals = { |
| 460 | /* Touchpad. */ |
| 461 | { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS }, |
| 462 | }, |
| 463 | }; |
| 464 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 465 | static struct chromeos_laptop acer_ac700 = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 466 | .i2c_peripherals = { |
| 467 | /* Light Sensor. */ |
| 468 | { .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS }, |
| 469 | }, |
| 470 | }; |
| 471 | |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 472 | static struct chromeos_laptop acer_c720 = { |
| 473 | .i2c_peripherals = { |
Michael Mullin | b90b3c4 | 2014-07-15 20:00:54 -0400 | [diff] [blame] | 474 | /* Touchscreen. */ |
| 475 | { .add = setup_atmel_1664s_ts, I2C_ADAPTER_DESIGNWARE_1 }, |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 476 | /* Touchpad. */ |
| 477 | { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 }, |
| 478 | /* Light Sensor. */ |
| 479 | { .add = setup_isl29018_als, I2C_ADAPTER_DESIGNWARE_1 }, |
| 480 | }, |
| 481 | }; |
| 482 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 483 | static struct chromeos_laptop hp_pavilion_14_chromebook = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 484 | .i2c_peripherals = { |
| 485 | /* Touchpad. */ |
| 486 | { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS }, |
| 487 | }, |
| 488 | }; |
| 489 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 490 | static struct chromeos_laptop cr48 = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 491 | .i2c_peripherals = { |
| 492 | /* Light Sensor. */ |
| 493 | { .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS }, |
| 494 | }, |
| 495 | }; |
| 496 | |
| 497 | #define _CBDD(board_) \ |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 498 | .callback = chromeos_laptop_dmi_matched, \ |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 499 | .driver_data = (void *)&board_ |
| 500 | |
Benson Leung | cdddd23 | 2013-10-20 20:58:26 -0700 | [diff] [blame] | 501 | static struct dmi_system_id chromeos_laptop_dmi_table[] __initdata = { |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 502 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 503 | .ident = "Samsung Series 5 550", |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 504 | .matches = { |
| 505 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"), |
| 506 | DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"), |
| 507 | }, |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 508 | _CBDD(samsung_series_5_550), |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 509 | }, |
| 510 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 511 | .ident = "Samsung Series 5", |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 512 | .matches = { |
| 513 | DMI_MATCH(DMI_PRODUCT_NAME, "Alex"), |
| 514 | }, |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 515 | _CBDD(samsung_series_5), |
Benson Leung | 8016bcb | 2013-02-01 14:34:46 -0800 | [diff] [blame] | 516 | }, |
| 517 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 518 | .ident = "Chromebook Pixel", |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 519 | .matches = { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 520 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), |
| 521 | DMI_MATCH(DMI_PRODUCT_NAME, "Link"), |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 522 | }, |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 523 | _CBDD(chromebook_pixel), |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 524 | }, |
| 525 | { |
Mohammed Habibulla | 0e1e5e5 | 2014-06-17 14:02:02 -0700 | [diff] [blame] | 526 | .ident = "Wolf", |
| 527 | .matches = { |
| 528 | DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"), |
| 529 | DMI_MATCH(DMI_PRODUCT_NAME, "Wolf"), |
| 530 | }, |
| 531 | _CBDD(dell_chromebook_11), |
| 532 | }, |
| 533 | { |
Benson Leung | 5ea9567 | 2014-06-17 14:02:01 -0700 | [diff] [blame] | 534 | .ident = "HP Chromebook 14", |
| 535 | .matches = { |
| 536 | DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"), |
| 537 | DMI_MATCH(DMI_PRODUCT_NAME, "Falco"), |
| 538 | }, |
| 539 | _CBDD(hp_chromebook_14), |
| 540 | }, |
| 541 | { |
Gene Chen | 963cb6f | 2014-06-17 14:02:03 -0700 | [diff] [blame] | 542 | .ident = "Toshiba CB35", |
| 543 | .matches = { |
| 544 | DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"), |
| 545 | DMI_MATCH(DMI_PRODUCT_NAME, "Leon"), |
| 546 | }, |
| 547 | _CBDD(toshiba_cb35), |
| 548 | }, |
| 549 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 550 | .ident = "Acer C7 Chromebook", |
| 551 | .matches = { |
| 552 | DMI_MATCH(DMI_PRODUCT_NAME, "Parrot"), |
| 553 | }, |
| 554 | _CBDD(acer_c7_chromebook), |
| 555 | }, |
| 556 | { |
| 557 | .ident = "Acer AC700", |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 558 | .matches = { |
| 559 | DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"), |
| 560 | }, |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 561 | _CBDD(acer_ac700), |
| 562 | }, |
| 563 | { |
Mika Westerberg | da3b0ab | 2014-06-17 14:02:00 -0700 | [diff] [blame] | 564 | .ident = "Acer C720", |
| 565 | .matches = { |
| 566 | DMI_MATCH(DMI_PRODUCT_NAME, "Peppy"), |
| 567 | }, |
| 568 | _CBDD(acer_c720), |
| 569 | }, |
| 570 | { |
Aaron Durbin | ec199dd | 2013-10-20 20:58:24 -0700 | [diff] [blame] | 571 | .ident = "HP Pavilion 14 Chromebook", |
| 572 | .matches = { |
| 573 | DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"), |
| 574 | }, |
| 575 | _CBDD(hp_pavilion_14_chromebook), |
| 576 | }, |
| 577 | { |
| 578 | .ident = "Cr-48", |
| 579 | .matches = { |
| 580 | DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), |
| 581 | }, |
| 582 | _CBDD(cr48), |
Benson Leung | aabf3f4 | 2013-02-01 14:34:45 -0800 | [diff] [blame] | 583 | }, |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 584 | { } |
| 585 | }; |
| 586 | MODULE_DEVICE_TABLE(dmi, chromeos_laptop_dmi_table); |
| 587 | |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 588 | static struct platform_device *cros_platform_device; |
| 589 | |
| 590 | static struct platform_driver cros_platform_driver = { |
| 591 | .driver = { |
| 592 | .name = "chromeos_laptop", |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 593 | }, |
| 594 | .probe = chromeos_laptop_probe, |
| 595 | }; |
| 596 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 597 | static int __init chromeos_laptop_init(void) |
| 598 | { |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 599 | int ret; |
Robin Schroer | 49c68a2 | 2014-05-29 20:45:07 +0200 | [diff] [blame] | 600 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 601 | if (!dmi_check_system(chromeos_laptop_dmi_table)) { |
| 602 | pr_debug("%s unsupported system.\n", __func__); |
| 603 | return -ENODEV; |
| 604 | } |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 605 | |
| 606 | ret = platform_driver_register(&cros_platform_driver); |
| 607 | if (ret) |
| 608 | return ret; |
| 609 | |
| 610 | cros_platform_device = platform_device_alloc("chromeos_laptop", -1); |
| 611 | if (!cros_platform_device) { |
| 612 | ret = -ENOMEM; |
| 613 | goto fail_platform_device1; |
| 614 | } |
| 615 | |
| 616 | ret = platform_device_add(cros_platform_device); |
| 617 | if (ret) |
| 618 | goto fail_platform_device2; |
| 619 | |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 620 | return 0; |
Benson Leung | 9ad3692 | 2013-10-20 20:58:25 -0700 | [diff] [blame] | 621 | |
| 622 | fail_platform_device2: |
| 623 | platform_device_put(cros_platform_device); |
| 624 | fail_platform_device1: |
| 625 | platform_driver_unregister(&cros_platform_driver); |
| 626 | return ret; |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 627 | } |
| 628 | |
| 629 | static void __exit chromeos_laptop_exit(void) |
| 630 | { |
| 631 | if (als) |
| 632 | i2c_unregister_device(als); |
| 633 | if (tp) |
| 634 | i2c_unregister_device(tp); |
Yufeng Shen | 33a84f8 | 2013-02-21 12:15:00 -0800 | [diff] [blame] | 635 | if (ts) |
| 636 | i2c_unregister_device(ts); |
Wei Yongjun | 2b8454a | 2013-11-27 11:34:58 +0800 | [diff] [blame] | 637 | |
| 638 | platform_device_unregister(cros_platform_device); |
| 639 | platform_driver_unregister(&cros_platform_driver); |
Benson Leung | d1381f4 | 2012-10-25 14:21:21 -0700 | [diff] [blame] | 640 | } |
| 641 | |
| 642 | module_init(chromeos_laptop_init); |
| 643 | module_exit(chromeos_laptop_exit); |
| 644 | |
| 645 | MODULE_DESCRIPTION("Chrome OS Laptop driver"); |
| 646 | MODULE_AUTHOR("Benson Leung <bleung@chromium.org>"); |
| 647 | MODULE_LICENSE("GPL"); |