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Benson Leungd1381f42012-10-25 14:21:21 -07001/*
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 Dyer7f3884f72015-08-04 16:36:29 -070026#include <linux/platform_data/atmel_mxt_ts.h>
Benson Leung2ef39202013-03-07 19:43:34 -080027#include <linux/input.h>
28#include <linux/interrupt.h>
Benson Leungd1381f42012-10-25 14:21:21 -070029#include <linux/module.h>
Benson Leung9ad36922013-10-20 20:58:25 -070030#include <linux/platform_device.h>
Benson Leungd1381f42012-10-25 14:21:21 -070031
Benson Leung8e1ad4c2013-02-21 12:14:59 -080032#define ATMEL_TP_I2C_ADDR 0x4b
33#define ATMEL_TP_I2C_BL_ADDR 0x25
Yufeng Shen33a84f82013-02-21 12:15:00 -080034#define ATMEL_TS_I2C_ADDR 0x4a
35#define ATMEL_TS_I2C_BL_ADDR 0x26
Benson Leungd1381f42012-10-25 14:21:21 -070036#define CYAPA_TP_I2C_ADDR 0x67
37#define ISL_ALS_I2C_ADDR 0x44
Benson Leungaabf3f42013-02-01 14:34:45 -080038#define TAOS_ALS_I2C_ADDR 0x29
Benson Leungd1381f42012-10-25 14:21:21 -070039
Benson Leung55024862014-07-15 17:43:11 -070040#define MAX_I2C_DEVICE_DEFERRALS 5
41
Benson Leungd1381f42012-10-25 14:21:21 -070042static struct i2c_client *als;
43static struct i2c_client *tp;
Yufeng Shen33a84f82013-02-21 12:15:00 -080044static struct i2c_client *ts;
Benson Leungd1381f42012-10-25 14:21:21 -070045
Olof Johansson6d3c1af2013-11-25 13:10:25 -080046static const char *i2c_adapter_names[] = {
Benson Leungd1381f42012-10-25 14:21:21 -070047 "SMBus I801 adapter",
Benson Leung741bf0c2013-02-21 12:14:55 -080048 "i915 gmbus vga",
49 "i915 gmbus panel",
Mika Westerbergda3b0ab2014-06-17 14:02:00 -070050 "i2c-designware-pci",
51 "i2c-designware-pci",
Benson Leungd1381f42012-10-25 14:21:21 -070052};
53
54/* Keep this enum consistent with i2c_adapter_names */
55enum i2c_adapter_type {
56 I2C_ADAPTER_SMBUS = 0,
Benson Leung741bf0c2013-02-21 12:14:55 -080057 I2C_ADAPTER_VGADDC,
58 I2C_ADAPTER_PANEL,
Mika Westerbergda3b0ab2014-06-17 14:02:00 -070059 I2C_ADAPTER_DESIGNWARE_0,
60 I2C_ADAPTER_DESIGNWARE_1,
Benson Leungd1381f42012-10-25 14:21:21 -070061};
62
Benson Leung55024862014-07-15 17:43:11 -070063enum i2c_peripheral_state {
64 UNPROBED = 0,
65 PROBED,
66 TIMEDOUT,
Benson Leungd1381f42012-10-25 14:21:21 -070067};
68
Aaron Durbinec199dd2013-10-20 20:58:24 -070069struct i2c_peripheral {
Benson Leung9ad36922013-10-20 20:58:25 -070070 int (*add)(enum i2c_adapter_type type);
Aaron Durbinec199dd2013-10-20 20:58:24 -070071 enum i2c_adapter_type type;
Benson Leung55024862014-07-15 17:43:11 -070072 enum i2c_peripheral_state state;
73 int tries;
Aaron Durbinec199dd2013-10-20 20:58:24 -070074};
75
76#define MAX_I2C_PERIPHERALS 3
77
78struct chromeos_laptop {
79 struct i2c_peripheral i2c_peripherals[MAX_I2C_PERIPHERALS];
80};
81
Benson Leung9ad36922013-10-20 20:58:25 -070082static struct chromeos_laptop *cros_laptop;
83
84static struct i2c_board_info cyapa_device = {
Benson Leungd1381f42012-10-25 14:21:21 -070085 I2C_BOARD_INFO("cyapa", CYAPA_TP_I2C_ADDR),
86 .flags = I2C_CLIENT_WAKE,
87};
88
Benson Leung9ad36922013-10-20 20:58:25 -070089static struct i2c_board_info isl_als_device = {
Benson Leungd1381f42012-10-25 14:21:21 -070090 I2C_BOARD_INFO("isl29018", ISL_ALS_I2C_ADDR),
91};
92
Benson Leung9ad36922013-10-20 20:58:25 -070093static struct i2c_board_info tsl2583_als_device = {
Benson Leung8016bcb2013-02-01 14:34:46 -080094 I2C_BOARD_INFO("tsl2583", TAOS_ALS_I2C_ADDR),
95};
96
Benson Leung9ad36922013-10-20 20:58:25 -070097static struct i2c_board_info tsl2563_als_device = {
Benson Leungaabf3f42013-02-01 14:34:45 -080098 I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR),
99};
100
Nick Dyerfb5e4c3e2014-05-18 23:00:15 -0700101static 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 Leung2ef39202013-03-07 19:43:34 -0800110static struct mxt_platform_data atmel_224s_tp_platform_data = {
Benson Leung2ef39202013-03-07 19:43:34 -0800111 .irqflags = IRQF_TRIGGER_FALLING,
Nick Dyerfb5e4c3e2014-05-18 23:00:15 -0700112 .t19_num_keys = ARRAY_SIZE(mxt_t19_keys),
113 .t19_keymap = mxt_t19_keys,
Nick Dyer7f3884f72015-08-04 16:36:29 -0700114 .suspend_mode = MXT_SUSPEND_T9_CTRL,
Benson Leung2ef39202013-03-07 19:43:34 -0800115};
116
Benson Leung9ad36922013-10-20 20:58:25 -0700117static struct i2c_board_info atmel_224s_tp_device = {
Benson Leung8e1ad4c2013-02-21 12:14:59 -0800118 I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR),
Benson Leung2ef39202013-03-07 19:43:34 -0800119 .platform_data = &atmel_224s_tp_platform_data,
Benson Leung8e1ad4c2013-02-21 12:14:59 -0800120 .flags = I2C_CLIENT_WAKE,
121};
122
Benson Leung2ef39202013-03-07 19:43:34 -0800123static struct mxt_platform_data atmel_1664s_platform_data = {
Benson Leung2ef39202013-03-07 19:43:34 -0800124 .irqflags = IRQF_TRIGGER_FALLING,
Nick Dyer7f3884f72015-08-04 16:36:29 -0700125 .suspend_mode = MXT_SUSPEND_T9_CTRL,
Benson Leung2ef39202013-03-07 19:43:34 -0800126};
127
Benson Leung9ad36922013-10-20 20:58:25 -0700128static struct i2c_board_info atmel_1664s_device = {
Yufeng Shen33a84f82013-02-21 12:15:00 -0800129 I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR),
Benson Leung2ef39202013-03-07 19:43:34 -0800130 .platform_data = &atmel_1664s_platform_data,
Yufeng Shen33a84f82013-02-21 12:15:00 -0800131 .flags = I2C_CLIENT_WAKE,
132};
133
Benson Leung9ad36922013-10-20 20:58:25 -0700134static struct i2c_client *__add_probed_i2c_device(
Benson Leungd1381f42012-10-25 14:21:21 -0700135 const char *name,
136 int bus,
137 struct i2c_board_info *info,
Dmitry Torokhov96cba9b2015-04-14 13:50:09 -0700138 const unsigned short *alt_addr_list)
Benson Leungd1381f42012-10-25 14:21:21 -0700139{
140 const struct dmi_device *dmi_dev;
141 const struct dmi_dev_onboard *dev_data;
142 struct i2c_adapter *adapter;
Dmitry Torokhov96cba9b2015-04-14 13:50:09 -0700143 struct i2c_client *client = NULL;
144 const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END };
Benson Leungd1381f42012-10-25 14:21:21 -0700145
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 Torokhov96cba9b2015-04-14 13:50:09 -0700175 /*
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 Leungd1381f42012-10-25 14:21:21 -0700197 if (!client)
Benson Leung55024862014-07-15 17:43:11 -0700198 pr_notice("%s failed to register device %d-%02x\n",
199 __func__, bus, info->addr);
Benson Leungd1381f42012-10-25 14:21:21 -0700200 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 Westerbergda3b0ab2014-06-17 14:02:00 -0700208struct i2c_lookup {
209 const char *name;
210 int instance;
211 int n;
212};
213
Benson Leung9ad36922013-10-20 20:58:25 -0700214static int __find_i2c_adap(struct device *dev, void *data)
Benson Leungd1381f42012-10-25 14:21:21 -0700215{
Mika Westerbergda3b0ab2014-06-17 14:02:00 -0700216 struct i2c_lookup *lookup = data;
Benson Leungd1381f42012-10-25 14:21:21 -0700217 static const char *prefix = "i2c-";
218 struct i2c_adapter *adapter;
Robin Schroer49c68a22014-05-29 20:45:07 +0200219
Benson Leungd1381f42012-10-25 14:21:21 -0700220 if (strncmp(dev_name(dev), prefix, strlen(prefix)) != 0)
221 return 0;
222 adapter = to_i2c_adapter(dev);
Mika Westerbergda3b0ab2014-06-17 14:02:00 -0700223 if (strncmp(adapter->name, lookup->name, strlen(lookup->name)) == 0 &&
224 lookup->n++ == lookup->instance)
225 return 1;
226 return 0;
Benson Leungd1381f42012-10-25 14:21:21 -0700227}
228
Benson Leung9ad36922013-10-20 20:58:25 -0700229static int find_i2c_adapter_num(enum i2c_adapter_type type)
Benson Leungd1381f42012-10-25 14:21:21 -0700230{
231 struct device *dev = NULL;
232 struct i2c_adapter *adapter;
Mika Westerbergda3b0ab2014-06-17 14:02:00 -0700233 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 Leungd1381f42012-10-25 14:21:21 -0700239 /* find the adapter by name */
Mika Westerbergda3b0ab2014-06-17 14:02:00 -0700240 dev = bus_find_device(&i2c_bus_type, NULL, &lookup, __find_i2c_adap);
Benson Leungd1381f42012-10-25 14:21:21 -0700241 if (!dev) {
Benson Leung9ad36922013-10-20 20:58:25 -0700242 /* Adapters may appear later. Deferred probing will retry */
243 pr_notice("%s: i2c adapter %s not found on system.\n", __func__,
Mika Westerbergda3b0ab2014-06-17 14:02:00 -0700244 lookup.name);
Benson Leungd1381f42012-10-25 14:21:21 -0700245 return -ENODEV;
246 }
247 adapter = to_i2c_adapter(dev);
248 return adapter->nr;
249}
250
251/*
Benson Leungbcaf0892013-02-21 12:14:58 -0800252 * 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 Leung9ad36922013-10-20 20:58:25 -0700259static struct i2c_client *add_probed_i2c_device(
Benson Leungbcaf0892013-02-21 12:14:58 -0800260 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 Leungd1381f42012-10-25 14:21:21 -0700272 * Probes for a device at a single address, the one provided by
273 * info->addr.
274 * Returns NULL if no device found.
275 */
Benson Leung9ad36922013-10-20 20:58:25 -0700276static struct i2c_client *add_i2c_device(const char *name,
Benson Leunge7b28842013-02-21 12:14:56 -0800277 enum i2c_adapter_type type,
278 struct i2c_board_info *info)
Benson Leungd1381f42012-10-25 14:21:21 -0700279{
Benson Leungd1381f42012-10-25 14:21:21 -0700280 return __add_probed_i2c_device(name,
Benson Leunge7b28842013-02-21 12:14:56 -0800281 find_i2c_adapter_num(type),
Benson Leungd1381f42012-10-25 14:21:21 -0700282 info,
Dmitry Torokhov96cba9b2015-04-14 13:50:09 -0700283 NULL);
Benson Leungd1381f42012-10-25 14:21:21 -0700284}
285
Benson Leung9ad36922013-10-20 20:58:25 -0700286static int setup_cyapa_tp(enum i2c_adapter_type type)
Benson Leunge7b28842013-02-21 12:14:56 -0800287{
Benson Leung9ad36922013-10-20 20:58:25 -0700288 if (tp)
289 return 0;
290
Aaron Durbinec199dd2013-10-20 20:58:24 -0700291 /* add cyapa touchpad */
292 tp = add_i2c_device("trackpad", type, &cyapa_device);
Benson Leung9ad36922013-10-20 20:58:25 -0700293 return (!tp) ? -EAGAIN : 0;
Benson Leungd1381f42012-10-25 14:21:21 -0700294}
295
Benson Leung9ad36922013-10-20 20:58:25 -0700296static int setup_atmel_224s_tp(enum i2c_adapter_type type)
Benson Leung8e1ad4c2013-02-21 12:14:59 -0800297{
298 const unsigned short addr_list[] = { ATMEL_TP_I2C_BL_ADDR,
Benson Leung8e1ad4c2013-02-21 12:14:59 -0800299 I2C_CLIENT_END };
Benson Leung9ad36922013-10-20 20:58:25 -0700300 if (tp)
301 return 0;
Benson Leung8e1ad4c2013-02-21 12:14:59 -0800302
Aaron Durbinec199dd2013-10-20 20:58:24 -0700303 /* add atmel mxt touchpad */
304 tp = add_probed_i2c_device("trackpad", type,
Benson Leung8e1ad4c2013-02-21 12:14:59 -0800305 &atmel_224s_tp_device, addr_list);
Benson Leung9ad36922013-10-20 20:58:25 -0700306 return (!tp) ? -EAGAIN : 0;
Benson Leung8e1ad4c2013-02-21 12:14:59 -0800307}
308
Benson Leung9ad36922013-10-20 20:58:25 -0700309static int setup_atmel_1664s_ts(enum i2c_adapter_type type)
Yufeng Shen33a84f82013-02-21 12:15:00 -0800310{
311 const unsigned short addr_list[] = { ATMEL_TS_I2C_BL_ADDR,
Yufeng Shen33a84f82013-02-21 12:15:00 -0800312 I2C_CLIENT_END };
Benson Leung9ad36922013-10-20 20:58:25 -0700313 if (ts)
314 return 0;
Yufeng Shen33a84f82013-02-21 12:15:00 -0800315
Aaron Durbinec199dd2013-10-20 20:58:24 -0700316 /* add atmel mxt touch device */
317 ts = add_probed_i2c_device("touchscreen", type,
Yufeng Shen33a84f82013-02-21 12:15:00 -0800318 &atmel_1664s_device, addr_list);
Benson Leung9ad36922013-10-20 20:58:25 -0700319 return (!ts) ? -EAGAIN : 0;
Yufeng Shen33a84f82013-02-21 12:15:00 -0800320}
321
Benson Leung9ad36922013-10-20 20:58:25 -0700322static int setup_isl29018_als(enum i2c_adapter_type type)
Benson Leungd1381f42012-10-25 14:21:21 -0700323{
Benson Leung9ad36922013-10-20 20:58:25 -0700324 if (als)
325 return 0;
326
Benson Leungd1381f42012-10-25 14:21:21 -0700327 /* add isl29018 light sensor */
Aaron Durbinec199dd2013-10-20 20:58:24 -0700328 als = add_i2c_device("lightsensor", type, &isl_als_device);
Benson Leung9ad36922013-10-20 20:58:25 -0700329 return (!als) ? -EAGAIN : 0;
Benson Leungd1381f42012-10-25 14:21:21 -0700330}
331
Benson Leung9ad36922013-10-20 20:58:25 -0700332static int setup_tsl2583_als(enum i2c_adapter_type type)
Benson Leungcc5c3982013-02-21 12:14:57 -0800333{
Benson Leung9ad36922013-10-20 20:58:25 -0700334 if (als)
335 return 0;
336
Aaron Durbinec199dd2013-10-20 20:58:24 -0700337 /* add tsl2583 light sensor */
338 als = add_i2c_device(NULL, type, &tsl2583_als_device);
Benson Leung9ad36922013-10-20 20:58:25 -0700339 return (!als) ? -EAGAIN : 0;
Benson Leungcc5c3982013-02-21 12:14:57 -0800340}
341
Benson Leung9ad36922013-10-20 20:58:25 -0700342static int setup_tsl2563_als(enum i2c_adapter_type type)
Benson Leung8016bcb2013-02-01 14:34:46 -0800343{
Benson Leung9ad36922013-10-20 20:58:25 -0700344 if (als)
345 return 0;
346
Aaron Durbinec199dd2013-10-20 20:58:24 -0700347 /* add tsl2563 light sensor */
348 als = add_i2c_device(NULL, type, &tsl2563_als_device);
Benson Leung9ad36922013-10-20 20:58:25 -0700349 return (!als) ? -EAGAIN : 0;
Benson Leung8016bcb2013-02-01 14:34:46 -0800350}
351
Benson Leung9ad36922013-10-20 20:58:25 -0700352static 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
361static int chromeos_laptop_probe(struct platform_device *pdev)
Benson Leungaabf3f42013-02-01 14:34:45 -0800362{
Aaron Durbinec199dd2013-10-20 20:58:24 -0700363 int i;
Benson Leung9ad36922013-10-20 20:58:25 -0700364 int ret = 0;
Aaron Durbinec199dd2013-10-20 20:58:24 -0700365
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 Leung55024862014-07-15 17:43:11 -0700375 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 Leung9ad36922013-10-20 20:58:25 -0700384 ret = -EPROBE_DEFER;
Benson Leung55024862014-07-15 17:43:11 -0700385 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 Durbinec199dd2013-10-20 20:58:24 -0700405 }
406
Benson Leung9ad36922013-10-20 20:58:25 -0700407 return ret;
Benson Leungaabf3f42013-02-01 14:34:45 -0800408}
409
Benson Leung9ad36922013-10-20 20:58:25 -0700410static struct chromeos_laptop samsung_series_5_550 = {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700411 .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 Leung9ad36922013-10-20 20:58:25 -0700419static struct chromeos_laptop samsung_series_5 = {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700420 .i2c_peripherals = {
421 /* Light Sensor. */
422 { .add = setup_tsl2583_als, I2C_ADAPTER_SMBUS },
423 },
424};
425
Benson Leung9ad36922013-10-20 20:58:25 -0700426static struct chromeos_laptop chromebook_pixel = {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700427 .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 Leung5ea95672014-06-17 14:02:01 -0700437static struct chromeos_laptop hp_chromebook_14 = {
438 .i2c_peripherals = {
439 /* Touchpad. */
440 { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 },
441 },
442};
443
Mohammed Habibulla0e1e5e52014-06-17 14:02:02 -0700444static struct chromeos_laptop dell_chromebook_11 = {
445 .i2c_peripherals = {
446 /* Touchpad. */
447 { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 },
448 },
449};
450
Gene Chen963cb6f2014-06-17 14:02:03 -0700451static struct chromeos_laptop toshiba_cb35 = {
452 .i2c_peripherals = {
453 /* Touchpad. */
454 { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 },
455 },
456};
457
Benson Leung9ad36922013-10-20 20:58:25 -0700458static struct chromeos_laptop acer_c7_chromebook = {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700459 .i2c_peripherals = {
460 /* Touchpad. */
461 { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS },
462 },
463};
464
Benson Leung9ad36922013-10-20 20:58:25 -0700465static struct chromeos_laptop acer_ac700 = {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700466 .i2c_peripherals = {
467 /* Light Sensor. */
468 { .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS },
469 },
470};
471
Mika Westerbergda3b0ab2014-06-17 14:02:00 -0700472static struct chromeos_laptop acer_c720 = {
473 .i2c_peripherals = {
Michael Mullinb90b3c42014-07-15 20:00:54 -0400474 /* Touchscreen. */
475 { .add = setup_atmel_1664s_ts, I2C_ADAPTER_DESIGNWARE_1 },
Mika Westerbergda3b0ab2014-06-17 14:02:00 -0700476 /* 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 Leung9ad36922013-10-20 20:58:25 -0700483static struct chromeos_laptop hp_pavilion_14_chromebook = {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700484 .i2c_peripherals = {
485 /* Touchpad. */
486 { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS },
487 },
488};
489
Benson Leung9ad36922013-10-20 20:58:25 -0700490static struct chromeos_laptop cr48 = {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700491 .i2c_peripherals = {
492 /* Light Sensor. */
493 { .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS },
494 },
495};
496
497#define _CBDD(board_) \
Benson Leung9ad36922013-10-20 20:58:25 -0700498 .callback = chromeos_laptop_dmi_matched, \
Aaron Durbinec199dd2013-10-20 20:58:24 -0700499 .driver_data = (void *)&board_
500
Benson Leungcdddd232013-10-20 20:58:26 -0700501static struct dmi_system_id chromeos_laptop_dmi_table[] __initdata = {
Benson Leungd1381f42012-10-25 14:21:21 -0700502 {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700503 .ident = "Samsung Series 5 550",
Benson Leungd1381f42012-10-25 14:21:21 -0700504 .matches = {
505 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"),
506 DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"),
507 },
Aaron Durbinec199dd2013-10-20 20:58:24 -0700508 _CBDD(samsung_series_5_550),
Benson Leungd1381f42012-10-25 14:21:21 -0700509 },
510 {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700511 .ident = "Samsung Series 5",
Benson Leung8016bcb2013-02-01 14:34:46 -0800512 .matches = {
513 DMI_MATCH(DMI_PRODUCT_NAME, "Alex"),
514 },
Aaron Durbinec199dd2013-10-20 20:58:24 -0700515 _CBDD(samsung_series_5),
Benson Leung8016bcb2013-02-01 14:34:46 -0800516 },
517 {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700518 .ident = "Chromebook Pixel",
Benson Leungaabf3f42013-02-01 14:34:45 -0800519 .matches = {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700520 DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
521 DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
Benson Leungaabf3f42013-02-01 14:34:45 -0800522 },
Aaron Durbinec199dd2013-10-20 20:58:24 -0700523 _CBDD(chromebook_pixel),
Benson Leungaabf3f42013-02-01 14:34:45 -0800524 },
525 {
Mohammed Habibulla0e1e5e52014-06-17 14:02:02 -0700526 .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 Leung5ea95672014-06-17 14:02:01 -0700534 .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 Chen963cb6f2014-06-17 14:02:03 -0700542 .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 Durbinec199dd2013-10-20 20:58:24 -0700550 .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 Leungaabf3f42013-02-01 14:34:45 -0800558 .matches = {
559 DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
560 },
Aaron Durbinec199dd2013-10-20 20:58:24 -0700561 _CBDD(acer_ac700),
562 },
563 {
Mika Westerbergda3b0ab2014-06-17 14:02:00 -0700564 .ident = "Acer C720",
565 .matches = {
566 DMI_MATCH(DMI_PRODUCT_NAME, "Peppy"),
567 },
568 _CBDD(acer_c720),
569 },
570 {
Aaron Durbinec199dd2013-10-20 20:58:24 -0700571 .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 Leungaabf3f42013-02-01 14:34:45 -0800583 },
Benson Leungd1381f42012-10-25 14:21:21 -0700584 { }
585};
586MODULE_DEVICE_TABLE(dmi, chromeos_laptop_dmi_table);
587
Benson Leung9ad36922013-10-20 20:58:25 -0700588static struct platform_device *cros_platform_device;
589
590static struct platform_driver cros_platform_driver = {
591 .driver = {
592 .name = "chromeos_laptop",
Benson Leung9ad36922013-10-20 20:58:25 -0700593 },
594 .probe = chromeos_laptop_probe,
595};
596
Benson Leungd1381f42012-10-25 14:21:21 -0700597static int __init chromeos_laptop_init(void)
598{
Benson Leung9ad36922013-10-20 20:58:25 -0700599 int ret;
Robin Schroer49c68a22014-05-29 20:45:07 +0200600
Benson Leungd1381f42012-10-25 14:21:21 -0700601 if (!dmi_check_system(chromeos_laptop_dmi_table)) {
602 pr_debug("%s unsupported system.\n", __func__);
603 return -ENODEV;
604 }
Benson Leung9ad36922013-10-20 20:58:25 -0700605
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 Leungd1381f42012-10-25 14:21:21 -0700620 return 0;
Benson Leung9ad36922013-10-20 20:58:25 -0700621
622fail_platform_device2:
623 platform_device_put(cros_platform_device);
624fail_platform_device1:
625 platform_driver_unregister(&cros_platform_driver);
626 return ret;
Benson Leungd1381f42012-10-25 14:21:21 -0700627}
628
629static void __exit chromeos_laptop_exit(void)
630{
631 if (als)
632 i2c_unregister_device(als);
633 if (tp)
634 i2c_unregister_device(tp);
Yufeng Shen33a84f82013-02-21 12:15:00 -0800635 if (ts)
636 i2c_unregister_device(ts);
Wei Yongjun2b8454a2013-11-27 11:34:58 +0800637
638 platform_device_unregister(cros_platform_device);
639 platform_driver_unregister(&cros_platform_driver);
Benson Leungd1381f42012-10-25 14:21:21 -0700640}
641
642module_init(chromeos_laptop_init);
643module_exit(chromeos_laptop_exit);
644
645MODULE_DESCRIPTION("Chrome OS Laptop driver");
646MODULE_AUTHOR("Benson Leung <bleung@chromium.org>");
647MODULE_LICENSE("GPL");