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| author | Yufeng Shen <miletus@chromium.org> | 2013-02-21 21:15:00 +0100 |
|---|---|---|
| committer | Matthew Garrett <matthew.garrett@nebula.com> | 2013-02-27 14:30:45 +0100 |
| commit | 33a84f8a7694e442a624556ef3ae40e91e31bd11 (patch) | |
| tree | f91023b8d091a2d063004b068b900de715bb1f88 /drivers/platform | |
| parent | Platform: x86: chromeos_laptop - Add support for probing devices (diff) | |
| download | linux-33a84f8a7694e442a624556ef3ae40e91e31bd11.tar.xz linux-33a84f8a7694e442a624556ef3ae40e91e31bd11.zip | |
Platform: x86: chromeos_laptop - Add Pixel Touchscreen
Instantiate the atmel mxt1664s touchscreen on this system.
The touchscreen may appear at two possible addresses:
0x4a in operational mode.
0x26 in bootloader mode.
Signed-off-by: Yufeng Shen <miletus@chromium.org>
Signed-off-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/chromeos_laptop.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/platform/x86/chromeos_laptop.c b/drivers/platform/x86/chromeos_laptop.c index c13f0c5e282a..e5380e772b26 100644 --- a/drivers/platform/x86/chromeos_laptop.c +++ b/drivers/platform/x86/chromeos_laptop.c @@ -27,12 +27,15 @@ #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", @@ -66,6 +69,12 @@ static struct i2c_board_info __initdata atmel_224s_tp_device = { .flags = I2C_CLIENT_WAKE, }; +static struct i2c_board_info __initdata atmel_1664s_device = { + I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR), + .platform_data = NULL, + .flags = I2C_CLIENT_WAKE, +}; + static struct i2c_client __init *__add_probed_i2c_device( const char *name, int bus, @@ -201,6 +210,18 @@ static int __init setup_atmel_224s_tp(const struct dmi_system_id *id) 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) { @@ -233,6 +254,14 @@ static struct dmi_system_id __initdata chromeos_laptop_dmi_table[] = { .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"), @@ -302,6 +331,8 @@ static void __exit chromeos_laptop_exit(void) i2c_unregister_device(als); if (tp) i2c_unregister_device(tp); + if (ts) + i2c_unregister_device(ts); } module_init(chromeos_laptop_init); |