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, 59 insertions, 8 deletions

diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c
index 0bf51d574fa9..0651d47b8eeb 100644
--- a/drivers/platform/x86/intel_pmc_ipc.c
+++ b/drivers/platform/x86/intel_pmc_ipc.c
@@ -32,7 +32,10 @@
 #include <linux/notifier.h>
 #include <linux/suspend.h>
 #include <linux/acpi.h>
+#include <linux/io-64-nonatomic-lo-hi.h>
+
 #include <asm/intel_pmc_ipc.h>
+
 #include <linux/platform_data/itco_wdt.h>
 
 /*
@@ -54,6 +57,18 @@
 #define IPC_WRITE_BUFFER	0x80
 #define IPC_READ_BUFFER		0x90
 
+/* PMC Global Control Registers */
+#define GCR_TELEM_DEEP_S0IX_OFFSET	0x1078
+#define GCR_TELEM_SHLW_S0IX_OFFSET	0x1080
+
+/* Residency with clock rate at 19.2MHz to usecs */
+#define S0IX_RESIDENCY_IN_USECS(d, s)		\
+({						\
+	u64 result = 10ull * ((d) + (s));	\
+	do_div(result, 192);			\
+	result;					\
+})
+
 /*
  * 16-byte buffer for sending data associated with IPC command.
  */
@@ -68,7 +83,7 @@
 #define PLAT_RESOURCE_IPC_INDEX		0
 #define PLAT_RESOURCE_IPC_SIZE		0x1000
 #define PLAT_RESOURCE_GCR_OFFSET	0x1008
-#define PLAT_RESOURCE_GCR_SIZE		0x4
+#define PLAT_RESOURCE_GCR_SIZE		0x1000
 #define PLAT_RESOURCE_BIOS_DATA_INDEX	1
 #define PLAT_RESOURCE_BIOS_IFACE_INDEX	2
 #define PLAT_RESOURCE_TELEM_SSRAM_INDEX	3
@@ -97,8 +112,6 @@
 #define TCO_PMC_OFFSET			0x8
 #define TCO_PMC_SIZE			0x4
 
-static const int iTCO_version = 3;
-
 static struct intel_pmc_ipc_dev {
 	struct device *dev;
 	void __iomem *ipc_base;
@@ -115,6 +128,7 @@ static struct intel_pmc_ipc_dev {
 	/* gcr */
 	resource_size_t gcr_base;
 	int gcr_size;
+	bool has_gcr_regs;
 
 	/* punit */
 	struct platform_device *punit_dev;
@@ -180,6 +194,11 @@ static inline u32 ipc_data_readl(u32 offset)
 	return readl(ipcdev.ipc_base + IPC_READ_BUFFER + offset);
 }
 
+static inline u64 gcr_data_readq(u32 offset)
+{
+	return readq(ipcdev.ipc_base + offset);
+}
+
 static int intel_pmc_ipc_check_status(void)
 {
 	int status;
@@ -389,6 +408,7 @@ static void ipc_pci_remove(struct pci_dev *pdev)
 static const struct pci_device_id ipc_pci_ids[] = {
 	{PCI_VDEVICE(INTEL, 0x0a94), 0},
 	{PCI_VDEVICE(INTEL, 0x1a94), 0},
+	{PCI_VDEVICE(INTEL, 0x5a94), 0},
 	{ 0,}
 };
 MODULE_DEVICE_TABLE(pci, ipc_pci_ids);
@@ -712,7 +732,8 @@ static int ipc_plat_get_res(struct platform_device *pdev)
 		dev_err(&pdev->dev, "Failed to get ipc resource\n");
 		return -ENXIO;
 	}
-	size = PLAT_RESOURCE_IPC_SIZE;
+	size = PLAT_RESOURCE_IPC_SIZE + PLAT_RESOURCE_GCR_SIZE;
+
 	if (!request_mem_region(res->start, size, pdev->name)) {
 		dev_err(&pdev->dev, "Failed to request ipc resource\n");
 		return -EBUSY;
@@ -748,6 +769,28 @@ static int ipc_plat_get_res(struct platform_device *pdev)
 	return 0;
 }
 
+/**
+ * intel_pmc_s0ix_counter_read() - Read S0ix residency.
+ * @data: Out param that contains current S0ix residency count.
+ *
+ * Return: an error code or 0 on success.
+ */
+int intel_pmc_s0ix_counter_read(u64 *data)
+{
+	u64 deep, shlw;
+
+	if (!ipcdev.has_gcr_regs)
+		return -EACCES;
+
+	deep = gcr_data_readq(GCR_TELEM_DEEP_S0IX_OFFSET);
+	shlw = gcr_data_readq(GCR_TELEM_SHLW_S0IX_OFFSET);
+
+	*data = S0IX_RESIDENCY_IN_USECS(deep, shlw);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(intel_pmc_s0ix_counter_read);
+
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id ipc_acpi_ids[] = {
 	{ "INT34D2", 0},
@@ -797,6 +840,8 @@ static int ipc_plat_probe(struct platform_device *pdev)
 		goto err_sys;
 	}
 
+	ipcdev.has_gcr_regs = true;
+
 	return 0;
 err_sys:
 	free_irq(ipcdev.irq, &ipcdev);
@@ -808,8 +853,11 @@ err_device:
 	iounmap(ipcdev.ipc_base);
 	res = platform_get_resource(pdev, IORESOURCE_MEM,
 				    PLAT_RESOURCE_IPC_INDEX);
-	if (res)
-		release_mem_region(res->start, PLAT_RESOURCE_IPC_SIZE);
+	if (res) {
+		release_mem_region(res->start,
+				   PLAT_RESOURCE_IPC_SIZE +
+				   PLAT_RESOURCE_GCR_SIZE);
+	}
 	return ret;
 }
 
@@ -825,8 +873,11 @@ static int ipc_plat_remove(struct platform_device *pdev)
 	iounmap(ipcdev.ipc_base);
 	res = platform_get_resource(pdev, IORESOURCE_MEM,
 				    PLAT_RESOURCE_IPC_INDEX);
-	if (res)
-		release_mem_region(res->start, PLAT_RESOURCE_IPC_SIZE);
+	if (res) {
+		release_mem_region(res->start,
+				   PLAT_RESOURCE_IPC_SIZE +
+				   PLAT_RESOURCE_GCR_SIZE);
+	}
 	ipcdev.dev = NULL;
 	return 0;
 }