Improve Bay and Cherry Trail device support

- Enable AXP288 PMIC support on x86_64 for battery charging and monitoring
  support on Bay and Cherry Trail tablets and laptops
- Enable various drivers for peripherals found on Bay and Cherry Trail tablets
- Add some small patches fixing suspend/resume touchscreen and accelerometer
  issues on various Bay and Cherry Trail tablets

1 files changed, 53 insertions, 0 deletions

diff --git a/0011-Input-goodix-Add-support-for-capacitive-home-button.patch b/0011-Input-goodix-Add-support-for-capacitive-home-button.patch
new file mode 100644
index 000000000..162357c21
--- /dev/null
+++ b/0011-Input-goodix-Add-support-for-capacitive-home-button.patch
@@ -0,0 +1,53 @@
+From 2a99775c336303d2efc43eab4f24b34722a28faa Mon Sep 17 00:00:00 2001
+From: "Sergei A. Trusov" <sergei.a.trusov@ya.ru>
+Date: Tue, 20 Jun 2017 18:08:35 +0200
+Subject: [PATCH 11/16] Input: goodix: Add support for capacitive home button
+
+On some x86 tablets with a Goodix touchscreen, the Windows logo on the
+front is a capacitive home button. Touching this button results in a touch
+with bit 4 of the first byte set, while only the lower 4 bits (0-3) are
+used to indicate the number of touches.
+
+Report a KEY_LEFTMETA press when this happens.
+
+Note that the hardware might support more than one button, in which
+case the "id" byte of coor_data would identify the button in question.
+This is not implemented as we don't have access to hardware with
+multiple buttons.
+
+Signed-off-by: Sergei A. Trusov <sergei.a.trusov@ya.ru>
+Acked-by: Bastien Nocera <hadess@hadess.net>
+---
+ drivers/input/touchscreen/goodix.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
+index 240b16f3ee97..903137d9cf7d 100644
+--- a/drivers/input/touchscreen/goodix.c
++++ b/drivers/input/touchscreen/goodix.c
+@@ -267,6 +267,12 @@ static void goodix_process_events(struct goodix_ts_data *ts)
+ 	if (touch_num < 0)
+ 		return;
+ 
++	/*
++	 * Bit 4 of the first byte reports the status of the capacitive
++	 * Windows/Home button.
++	 */
++	input_report_key(ts->input_dev, KEY_LEFTMETA, !!(point_data[0] & BIT(4)));
++
+ 	for (i = 0; i < touch_num; i++)
+ 		goodix_ts_report_touch(ts,
+ 				&point_data[1 + GOODIX_CONTACT_SIZE * i]);
+@@ -612,6 +618,9 @@ static int goodix_request_input_dev(struct goodix_ts_data *ts)
+ 	ts->input_dev->id.product = ts->id;
+ 	ts->input_dev->id.version = ts->version;
+ 
++	/* Capacitive Windows/Home button on some devices */
++	input_set_capability(ts->input_dev, EV_KEY, KEY_LEFTMETA);
++
+ 	error = input_register_device(ts->input_dev);
+ 	if (error) {
+ 		dev_err(&ts->client->dev,
+-- 
+2.13.0
+