Instantiate the atmel mxt224s trackpad on this system.
The trackpad may appear at two possible addresses:
0x4b in operational mode.
0x25 in bootloader mode.
Signed-off-by: Benson Leung <bleung@xxxxxxxxxxxx>
---
drivers/platform/x86/chromeos_laptop.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/drivers/platform/x86/chromeos_laptop.c b/drivers/platform/x86/chromeos_laptop.c
index f3a292b..febedc0 100644
--- a/drivers/platform/x86/chromeos_laptop.c
+++ b/drivers/platform/x86/chromeos_laptop.c
@@ -25,6 +25,8 @@
#include <linux/i2c.h>
#include <linux/module.h>
+#define ATMEL_TP_I2C_ADDR 0x4b
+#define ATMEL_TP_I2C_BL_ADDR 0x25
#define CYAPA_TP_I2C_ADDR 0x67
#define ISL_ALS_I2C_ADDR 0x44
#define TAOS_ALS_I2C_ADDR 0x29
@@ -62,6 +64,12 @@ static struct i2c_board_info __initdata tsl2563_als_device = {
I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR),
};
+static struct i2c_board_info __initdata atmel_224s_tp_device = {
+ I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR),
+ .platform_data = NULL,
+ .flags = I2C_CLIENT_WAKE,
+};
+
static struct i2c_client __init *__add_probed_i2c_device(
const char *name,
int bus,
@@ -193,6 +201,19 @@ static int __init setup_cyapa_smbus_tp(const struct dmi_system_id *id)
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_isl29018_als(const struct dmi_system_id *id)
{
/* add isl29018 light sensor */
@@ -232,6 +253,14 @@ static struct dmi_system_id __initdata chromeos_laptop_dmi_table[] = {
.callback = setup_cyapa_smbus_tp,
},
{
+ .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"),
--
1.8.1.3
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