Merge tag 'platform-drivers-x86-v4.11-1' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver updates from Darren Hart:
 "Big picture:

   - New intel_turbo_max_3 driver, providing max core frequency
     information to the scheduler. Intel PMC APL support, s0ix read API,
     and fixes.

   - New Silead touchscreen platform touchscreen descriptions.
     Additional hotkey support for the intel-hid driver.

   - New model support for dell-laptop and hp_accel.

   - Several cleanups, especially to the fujitsu-laptop and
     intel_mid_powerbtn drivers.

  Detail summary:

  platorm/x86:
   - silead depends on I2C being built-in
   - add support for devices with Silead touchscreens
   - Support Turbo Boost Max 3.0 for non HWP systems

  intel_turbo_max_3:
   - make it explicitly non-modular

  dell-laptop:
   - Add Latitude 7480 and others to the DMI whitelist

  intel-hid:
   - Support 5 button array

  thinkpad_acpi:
   - Call led_classdev_notify_brightness_hw_changed on kbd brightness change
   - Use brightness_set_blocking callback for LEDs
   - Stop setting led_classdev brightness directly

  acer-wmi:
   - add another KEY_WLAN keycode
   - Inform firmware that RF Button Driver is active
   - setup accelerometer when machine has appropriate notify event

  asus-wireless:
   - Fix indentation
   - Use per-HID HSWC parameters

  intel_pmc_ipc:
   - Add APL PMC PCI Id
   - read s0ix residency API
   - Remove unused iTCO_version variable

  alienware-wmi:
   - Remove header duplicate

  intel_pmc_core:
   - fix out-of-bounds accesses on stack

  intel_mid_powerbtn:
   - Use SCU IPC directly
   - Unify IRQ acknowledgment
   - Move comment to where it belongs
   - Unify PBSTATUS access
   - Remove snail address
   - Sort headers alphabetically
   - Join string literals
   - Enable driver for Merrifield
   - Acknowledge interrupts
   - Factor out mfld_ack()
   - Introduce driver data
   - Substitute mfld by mid
   - Convert to use devm_*()

  fujitsu-laptop:
   - make hotkey handling functions more similar
   - break up complex loop condition
   - move keycode processing to separate functions
   - decrease indentation in acpi_fujitsu_hotkey_notify()
   - simplify logolamp_get()
   - rework logolamp_set() to properly handle errors
   - set default trigger for radio LED to rfkill-any

  dell-smbios:
   - Auto-select as needed

  intel_mid_thermal:
   - Fix module autoload
   - Remove duplicated platform device ID

  mlx-platform:
   - mlxcpld-hotplug driver style fixes

  hp_accel:
   - Add support for HP ZBook 17"

* tag 'platform-drivers-x86-v4.11-1' of git://git.infradead.org/linux-platform-drivers-x86: (45 commits)
  platform/x86: intel_turbo_max_3: make it explicitly non-modular
  platform/x86: dell-laptop: Add Latitude 7480 and others to the DMI whitelist
  platform/x86: intel-hid: Support 5 button array
  platform/x86: thinkpad_acpi: Call led_classdev_notify_brightness_hw_changed on kbd brightness change
  platform/x86: thinkpad_acpi: Use brightness_set_blocking callback for LEDs
  platform/x86: thinkpad_acpi: Stop setting led_classdev brightness directly
  leds: class: Add new optional brightness_hw_changed attribute
  platform/x86: acer-wmi: add another KEY_WLAN keycode
  platform/x86: acer-wmi: Inform firmware that RF Button Driver is active
  platform/x86: asus-wireless: Fix indentation
  platform/x86: asus-wireless: Use per-HID HSWC parameters
  platform/x86: intel_pmc_ipc: Add APL PMC PCI Id
  platform/x86: intel_pmc_ipc: read s0ix residency API
  platform/x86: alienware-wmi: Remove header duplicate
  platform/x86: intel_mid_powerbtn: Use SCU IPC directly
  platform/x86: intel_mid_powerbtn: Unify IRQ acknowledgment
  platform/x86: intel_mid_powerbtn: Move comment to where it belongs
  platform/x86: intel_mid_powerbtn: Unify PBSTATUS access
  platform/x86: intel_pmc_core: fix out-of-bounds accesses on stack
  platform/x86: silead depends on I2C being built-in
  ...

1 files changed, 91 insertions, 5 deletions

diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c
index cb3ab2b212b1..bcf438f38781 100644
--- a/drivers/platform/x86/intel-hid.c
+++ b/drivers/platform/x86/intel-hid.c
@@ -1,5 +1,5 @@
 /*
- *  Intel HID event driver for Windows 8
+ *  Intel HID event & 5 button array driver
  *
  *  Copyright (C) 2015 Alex Hung <alex.hung@canonical.com>
  *  Copyright (C) 2015 Andrew Lutomirski <luto@kernel.org>
@@ -57,8 +57,24 @@ static const struct key_entry intel_hid_keymap[] = {
 	{ KE_END },
 };
 
+/* 5 button array notification value. */
+static const struct key_entry intel_array_keymap[] = {
+	{ KE_KEY,    0xC2, { KEY_LEFTMETA } },                /* Press */
+	{ KE_IGNORE, 0xC3, { KEY_LEFTMETA } },                /* Release */
+	{ KE_KEY,    0xC4, { KEY_VOLUMEUP } },                /* Press */
+	{ KE_IGNORE, 0xC5, { KEY_VOLUMEUP } },                /* Release */
+	{ KE_KEY,    0xC6, { KEY_VOLUMEDOWN } },              /* Press */
+	{ KE_IGNORE, 0xC7, { KEY_VOLUMEDOWN } },              /* Release */
+	{ KE_SW,     0xC8, { .sw = { SW_ROTATE_LOCK, 1 } } }, /* Press */
+	{ KE_SW,     0xC9, { .sw = { SW_ROTATE_LOCK, 0 } } }, /* Release */
+	{ KE_KEY,    0xCE, { KEY_POWER } },                   /* Press */
+	{ KE_IGNORE, 0xCF, { KEY_POWER } },                   /* Release */
+	{ KE_END },
+};
+
 struct intel_hid_priv {
 	struct input_dev *input_dev;
+	struct input_dev *array;
 };
 
 static int intel_hid_set_enable(struct device *device, int enable)
@@ -78,15 +94,43 @@ static int intel_hid_set_enable(struct device *device, int enable)
 	return 0;
 }
 
+static void intel_button_array_enable(struct device *device, bool enable)
+{
+	struct intel_hid_priv *priv = dev_get_drvdata(device);
+	acpi_handle handle = ACPI_HANDLE(device);
+	unsigned long long button_cap;
+	acpi_status status;
+
+	if (!priv->array)
+		return;
+
+	/* Query supported platform features */
+	status = acpi_evaluate_integer(handle, "BTNC", NULL, &button_cap);
+	if (ACPI_FAILURE(status)) {
+		dev_warn(device, "failed to get button capability\n");
+		return;
+	}
+
+	/* Enable|disable features - power button is always enabled */
+	status = acpi_execute_simple_method(handle, "BTNE",
+					    enable ? button_cap : 1);
+	if (ACPI_FAILURE(status))
+		dev_warn(device, "failed to set button capability\n");
+}
+
 static int intel_hid_pl_suspend_handler(struct device *device)
 {
 	intel_hid_set_enable(device, 0);
+	intel_button_array_enable(device, false);
+
 	return 0;
 }
 
 static int intel_hid_pl_resume_handler(struct device *device)
 {
 	intel_hid_set_enable(device, 1);
+	intel_button_array_enable(device, true);
+
 	return 0;
 }
 
@@ -126,6 +170,27 @@ err_free_device:
 	return ret;
 }
 
+static int intel_button_array_input_setup(struct platform_device *device)
+{
+	struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
+	int ret;
+
+	/* Setup input device for 5 button array */
+	priv->array = devm_input_allocate_device(&device->dev);
+	if (!priv->array)
+		return -ENOMEM;
+
+	ret = sparse_keymap_setup(priv->array, intel_array_keymap, NULL);
+	if (ret)
+		return ret;
+
+	priv->array->dev.parent = &device->dev;
+	priv->array->name = "Intel HID 5 button array";
+	priv->array->id.bustype = BUS_HOST;
+
+	return input_register_device(priv->array);
+}
+
 static void intel_hid_input_destroy(struct platform_device *device)
 {
 	struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
@@ -140,10 +205,11 @@ static void notify_handler(acpi_handle handle, u32 event, void *context)
 	unsigned long long ev_index;
 	acpi_status status;
 
-	/* The platform spec only defines one event code: 0xC0. */
+	/* 0xC0 is for HID events, other values are for 5 button array */
 	if (event != 0xc0) {
-		dev_warn(&device->dev, "received unknown event (0x%x)\n",
-			 event);
+		if (!priv->array ||
+		    !sparse_keymap_report_event(priv->array, event, 1, true))
+			dev_info(&device->dev, "unknown event 0x%x\n", event);
 		return;
 	}
 
@@ -161,8 +227,8 @@ static void notify_handler(acpi_handle handle, u32 event, void *context)
 static int intel_hid_probe(struct platform_device *device)
 {
 	acpi_handle handle = ACPI_HANDLE(&device->dev);
+	unsigned long long event_cap, mode;
 	struct intel_hid_priv *priv;
-	unsigned long long mode;
 	acpi_status status;
 	int err;
 
@@ -193,6 +259,15 @@ static int intel_hid_probe(struct platform_device *device)
 		return err;
 	}
 
+	/* Setup 5 button array */
+	status = acpi_evaluate_integer(handle, "HEBC", NULL, &event_cap);
+	if (ACPI_SUCCESS(status) && (event_cap & 0x20000)) {
+		dev_info(&device->dev, "platform supports 5 button array\n");
+		err = intel_button_array_input_setup(device);
+		if (err)
+			pr_err("Failed to setup Intel 5 button array hotkeys\n");
+	}
+
 	status = acpi_install_notify_handler(handle,
 					     ACPI_DEVICE_NOTIFY,
 					     notify_handler,
@@ -206,6 +281,16 @@ static int intel_hid_probe(struct platform_device *device)
 	if (err)
 		goto err_remove_notify;
 
+	if (priv->array) {
+		intel_button_array_enable(&device->dev, true);
+
+		/* Call button load method to enable HID power button */
+		status = acpi_evaluate_object(handle, "BTNL", NULL, NULL);
+		if (ACPI_FAILURE(status))
+			dev_warn(&device->dev,
+				 "failed to enable HID power button\n");
+	}
+
 	return 0;
 
 err_remove_notify:
@@ -224,6 +309,7 @@ static int intel_hid_remove(struct platform_device *device)
 	acpi_remove_notify_handler(handle, ACPI_DEVICE_NOTIFY, notify_handler);
 	intel_hid_input_destroy(device);
 	intel_hid_set_enable(&device->dev, 0);
+	intel_button_array_enable(&device->dev, false);
 
 	/*
 	 * Even if we failed to shut off the event stream, we can still