diff options
Diffstat (limited to 'drivers/platform/x86/chromeos_laptop.c')
| -rw-r--r-- | drivers/platform/x86/chromeos_laptop.c | 408 |
1 files changed, 0 insertions, 408 deletions
diff --git a/drivers/platform/x86/chromeos_laptop.c b/drivers/platform/x86/chromeos_laptop.c deleted file mode 100644 index 3e5b4497a1d..00000000000 --- a/drivers/platform/x86/chromeos_laptop.c +++ /dev/null @@ -1,408 +0,0 @@ -/* - * chromeos_laptop.c - Driver to instantiate Chromebook i2c/smbus devices. - * - * Author : Benson Leung <bleung@chromium.org> - * - * Copyright (C) 2012 Google, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <linux/dmi.h> -#include <linux/i2c.h> -#include <linux/i2c/atmel_mxt_ts.h> -#include <linux/input.h> -#include <linux/interrupt.h> -#include <linux/module.h> - -#define ATMEL_TP_I2C_ADDR 0x4b -#define ATMEL_TP_I2C_BL_ADDR 0x25 -#define ATMEL_TS_I2C_ADDR 0x4a -#define ATMEL_TS_I2C_BL_ADDR 0x26 -#define CYAPA_TP_I2C_ADDR 0x67 -#define ISL_ALS_I2C_ADDR 0x44 -#define TAOS_ALS_I2C_ADDR 0x29 - -static struct i2c_client *als; -static struct i2c_client *tp; -static struct i2c_client *ts; - -const char *i2c_adapter_names[] = { - "SMBus I801 adapter", - "i915 gmbus vga", - "i915 gmbus panel", -}; - -/* Keep this enum consistent with i2c_adapter_names */ -enum i2c_adapter_type { - I2C_ADAPTER_SMBUS = 0, - I2C_ADAPTER_VGADDC, - I2C_ADAPTER_PANEL, -}; - -static struct i2c_board_info __initdata cyapa_device = { - I2C_BOARD_INFO("cyapa", CYAPA_TP_I2C_ADDR), - .flags = I2C_CLIENT_WAKE, -}; - -static struct i2c_board_info __initdata isl_als_device = { - I2C_BOARD_INFO("isl29018", ISL_ALS_I2C_ADDR), -}; - -static struct i2c_board_info __initdata tsl2583_als_device = { - I2C_BOARD_INFO("tsl2583", TAOS_ALS_I2C_ADDR), -}; - -static struct i2c_board_info __initdata tsl2563_als_device = { - I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR), -}; - -static struct mxt_platform_data atmel_224s_tp_platform_data = { - .x_line = 18, - .y_line = 12, - .x_size = 102*20, - .y_size = 68*20, - .blen = 0x80, /* Gain setting is in upper 4 bits */ - .threshold = 0x32, - .voltage = 0, /* 3.3V */ - .orient = MXT_VERTICAL_FLIP, - .irqflags = IRQF_TRIGGER_FALLING, - .is_tp = true, - .key_map = { KEY_RESERVED, - KEY_RESERVED, - KEY_RESERVED, - BTN_LEFT }, - .config = NULL, - .config_length = 0, -}; - -static struct i2c_board_info __initdata atmel_224s_tp_device = { - I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR), - .platform_data = &atmel_224s_tp_platform_data, - .flags = I2C_CLIENT_WAKE, -}; - -static struct mxt_platform_data atmel_1664s_platform_data = { - .x_line = 32, - .y_line = 50, - .x_size = 1700, - .y_size = 2560, - .blen = 0x89, /* Gain setting is in upper 4 bits */ - .threshold = 0x28, - .voltage = 0, /* 3.3V */ - .orient = MXT_ROTATED_90_COUNTER, - .irqflags = IRQF_TRIGGER_FALLING, - .is_tp = false, - .config = NULL, - .config_length = 0, -}; - -static struct i2c_board_info __initdata atmel_1664s_device = { - I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR), - .platform_data = &atmel_1664s_platform_data, - .flags = I2C_CLIENT_WAKE, -}; - -static struct i2c_client __init *__add_probed_i2c_device( - const char *name, - int bus, - struct i2c_board_info *info, - const unsigned short *addrs) -{ - const struct dmi_device *dmi_dev; - const struct dmi_dev_onboard *dev_data; - struct i2c_adapter *adapter; - struct i2c_client *client; - - if (bus < 0) - return NULL; - /* - * If a name is specified, look for irq platform information stashed - * in DMI_DEV_TYPE_DEV_ONBOARD by the Chrome OS custom system firmware. - */ - if (name) { - dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, name, NULL); - if (!dmi_dev) { - pr_err("%s failed to dmi find device %s.\n", - __func__, - name); - return NULL; - } - dev_data = (struct dmi_dev_onboard *)dmi_dev->device_data; - if (!dev_data) { - pr_err("%s failed to get data from dmi for %s.\n", - __func__, name); - return NULL; - } - info->irq = dev_data->instance; - } - - adapter = i2c_get_adapter(bus); - if (!adapter) { - pr_err("%s failed to get i2c adapter %d.\n", __func__, bus); - return NULL; - } - - /* add the i2c device */ - client = i2c_new_probed_device(adapter, info, addrs, NULL); - if (!client) - pr_err("%s failed to register device %d-%02x\n", - __func__, bus, info->addr); - else - pr_debug("%s added i2c device %d-%02x\n", - __func__, bus, info->addr); - - i2c_put_adapter(adapter); - return client; -} - -static int __init __find_i2c_adap(struct device *dev, void *data) -{ - const char *name = data; - static const char *prefix = "i2c-"; - struct i2c_adapter *adapter; - if (strncmp(dev_name(dev), prefix, strlen(prefix)) != 0) - return 0; - adapter = to_i2c_adapter(dev); - return (strncmp(adapter->name, name, strlen(name)) == 0); -} - -static int __init find_i2c_adapter_num(enum i2c_adapter_type type) -{ - struct device *dev = NULL; - struct i2c_adapter *adapter; - const char *name = i2c_adapter_names[type]; - /* find the adapter by name */ - dev = bus_find_device(&i2c_bus_type, NULL, (void *)name, - __find_i2c_adap); - if (!dev) { - pr_err("%s: i2c adapter %s not found on system.\n", __func__, - name); - return -ENODEV; - } - adapter = to_i2c_adapter(dev); - return adapter->nr; -} - -/* - * Takes a list of addresses in addrs as such : - * { addr1, ... , addrn, I2C_CLIENT_END }; - * add_probed_i2c_device will use i2c_new_probed_device - * and probe for devices at all of the addresses listed. - * Returns NULL if no devices found. - * See Documentation/i2c/instantiating-devices for more information. - */ -static __init struct i2c_client *add_probed_i2c_device( - const char *name, - enum i2c_adapter_type type, - struct i2c_board_info *info, - const unsigned short *addrs) -{ - return __add_probed_i2c_device(name, - find_i2c_adapter_num(type), - info, - addrs); -} - -/* - * Probes for a device at a single address, the one provided by - * info->addr. - * Returns NULL if no device found. - */ -static __init struct i2c_client *add_i2c_device(const char *name, - enum i2c_adapter_type type, - struct i2c_board_info *info) -{ - const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END }; - return __add_probed_i2c_device(name, - find_i2c_adapter_num(type), - info, - addr_list); -} - - -static struct i2c_client __init *add_smbus_device(const char *name, - struct i2c_board_info *info) -{ - return add_i2c_device(name, I2C_ADAPTER_SMBUS, info); -} - -static int __init setup_cyapa_smbus_tp(const struct dmi_system_id *id) -{ - /* add cyapa touchpad on smbus */ - tp = add_smbus_device("trackpad", &cyapa_device); - return 0; -} - -static int __init setup_atmel_224s_tp(const struct dmi_system_id *id) -{ - const unsigned short addr_list[] = { ATMEL_TP_I2C_BL_ADDR, - ATMEL_TP_I2C_ADDR, - I2C_CLIENT_END }; - - /* add atmel mxt touchpad on VGA DDC GMBus */ - tp = add_probed_i2c_device("trackpad", I2C_ADAPTER_VGADDC, - &atmel_224s_tp_device, addr_list); - return 0; -} - -static int __init setup_atmel_1664s_ts(const struct dmi_system_id *id) -{ - const unsigned short addr_list[] = { ATMEL_TS_I2C_BL_ADDR, - ATMEL_TS_I2C_ADDR, - I2C_CLIENT_END }; - - /* add atmel mxt touch device on PANEL GMBus */ - ts = add_probed_i2c_device("touchscreen", I2C_ADAPTER_PANEL, - &atmel_1664s_device, addr_list); - return 0; -} - - -static int __init setup_isl29018_als(const struct dmi_system_id *id) -{ - /* add isl29018 light sensor */ - als = add_smbus_device("lightsensor", &isl_als_device); - return 0; -} - -static int __init setup_isl29023_als(const struct dmi_system_id *id) -{ - /* add isl29023 light sensor on Panel GMBus */ - als = add_i2c_device("lightsensor", I2C_ADAPTER_PANEL, - &isl_als_device); - return 0; -} - -static int __init setup_tsl2583_als(const struct dmi_system_id *id) -{ - /* add tsl2583 light sensor on smbus */ - als = add_smbus_device(NULL, &tsl2583_als_device); - return 0; -} - -static int __init setup_tsl2563_als(const struct dmi_system_id *id) -{ - /* add tsl2563 light sensor on smbus */ - als = add_smbus_device(NULL, &tsl2563_als_device); - return 0; -} - -static struct dmi_system_id __initdata chromeos_laptop_dmi_table[] = { - { - .ident = "Samsung Series 5 550 - Touchpad", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"), - DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"), - }, - .callback = setup_cyapa_smbus_tp, - }, - { - .ident = "Chromebook Pixel - Touchscreen", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), - DMI_MATCH(DMI_PRODUCT_NAME, "Link"), - }, - .callback = setup_atmel_1664s_ts, - }, - { - .ident = "Chromebook Pixel - Touchpad", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), - DMI_MATCH(DMI_PRODUCT_NAME, "Link"), - }, - .callback = setup_atmel_224s_tp, - }, - { - .ident = "Samsung Series 5 550 - Light Sensor", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"), - DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"), - }, - .callback = setup_isl29018_als, - }, - { - .ident = "Chromebook Pixel - Light Sensor", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), - DMI_MATCH(DMI_PRODUCT_NAME, "Link"), - }, - .callback = setup_isl29023_als, - }, - { - .ident = "Acer C7 Chromebook - Touchpad", - .matches = { - DMI_MATCH(DMI_PRODUCT_NAME, "Parrot"), - }, - .callback = setup_cyapa_smbus_tp, - }, - { - .ident = "HP Pavilion 14 Chromebook - Touchpad", - .matches = { - DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"), - }, - .callback = setup_cyapa_smbus_tp, - }, - { - .ident = "Samsung Series 5 - Light Sensor", - .matches = { - DMI_MATCH(DMI_PRODUCT_NAME, "Alex"), - }, - .callback = setup_tsl2583_als, - }, - { - .ident = "Cr-48 - Light Sensor", - .matches = { - DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), - }, - .callback = setup_tsl2563_als, - }, - { - .ident = "Acer AC700 - Light Sensor", - .matches = { - DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"), - }, - .callback = setup_tsl2563_als, - }, - { } -}; -MODULE_DEVICE_TABLE(dmi, chromeos_laptop_dmi_table); - -static int __init chromeos_laptop_init(void) -{ - if (!dmi_check_system(chromeos_laptop_dmi_table)) { - pr_debug("%s unsupported system.\n", __func__); - return -ENODEV; - } - return 0; -} - -static void __exit chromeos_laptop_exit(void) -{ - if (als) - i2c_unregister_device(als); - if (tp) - i2c_unregister_device(tp); - if (ts) - i2c_unregister_device(ts); -} - -module_init(chromeos_laptop_init); -module_exit(chromeos_laptop_exit); - -MODULE_DESCRIPTION("Chrome OS Laptop driver"); -MODULE_AUTHOR("Benson Leung <bleung@chromium.org>"); -MODULE_LICENSE("GPL"); |