platform/chrome: mfd/cros_ec_dev: Add sysfs entry to set keyboard wake lid angle

This adds a sysfs attribute (/sys/class/chromeos/cros_ec/kb_wake_angle)
used to set and get the keyboard wake lid angle. This attribute is
present only if 2 accelerometers are controlled by the EC.

This patch also moves the cros_ec features check before the device is
added so the features map obtained from the EC is ready on time.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benson Leung <bleung@chromium.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
index c61535979b8f..2d4e23c9ea0a 100644
--- a/include/linux/mfd/cros_ec.h
+++ b/include/linux/mfd/cros_ec.h
@@ -183,6 +183,7 @@ struct cros_ec_debugfs;
  * @ec_dev: cros_ec_device structure to talk to the physical device
  * @dev: pointer to the platform device
  * @debug_info: cros_ec_debugfs structure for debugging information
+ * @has_kb_wake_angle: true if at least 2 accelerometer are connected to the EC.
  * @cmd_offset: offset to apply for each command.
  */
 struct cros_ec_dev {
@@ -191,6 +192,7 @@ struct cros_ec_dev {
         struct cros_ec_device *ec_dev;
         struct device *dev;
         struct cros_ec_debugfs *debug_info;
+        bool has_kb_wake_angle;
         u16 cmd_offset;
         u32 features[2];
 };