Merge branch 'acpi-lpss'

* acpi-lpss:
  ACPI / LPSS: make code less confusing for reader
  ACPI / LPSS: Add support for exposing LTR registers to user space
  ACPI / scan: Add special handler for Intel Lynxpoint LPSS devices

4 files changed, 2 insertions, 175 deletions

diff --git a/drivers/clk/x86/Makefile b/drivers/clk/x86/Makefile
index f9ba4fab0dd..04781389d0f 100644
--- a/drivers/clk/x86/Makefile
+++ b/drivers/clk/x86/Makefile
@@ -1,2 +1,2 @@
-clk-x86-lpss-objs		:= clk-lpss.o clk-lpt.o
+clk-x86-lpss-objs		:= clk-lpt.o
 obj-$(CONFIG_X86_INTEL_LPSS)	+= clk-x86-lpss.o
diff --git a/drivers/clk/x86/clk-lpss.c b/drivers/clk/x86/clk-lpss.c
deleted file mode 100644
index b5e229f3c3d..00000000000
--- a/drivers/clk/x86/clk-lpss.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
- * Intel Low Power Subsystem clocks.
- *
- * Copyright (C) 2013, Intel Corporation
- * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
- *	    Heikki Krogerus <heikki.krogerus@linux.intel.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/acpi.h>
-#include <linux/clk.h>
-#include <linux/clk-provider.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/module.h>
-
-static int clk_lpss_is_mmio_resource(struct acpi_resource *res, void *data)
-{
-	struct resource r;
-	return !acpi_dev_resource_memory(res, &r);
-}
-
-static acpi_status clk_lpss_find_mmio(acpi_handle handle, u32 level,
-				      void *data, void **retval)
-{
-	struct resource_list_entry *rentry;
-	struct list_head resource_list;
-	struct acpi_device *adev;
-	const char *uid = data;
-	int ret;
-
-	if (acpi_bus_get_device(handle, &adev))
-		return AE_OK;
-
-	if (uid) {
-		if (!adev->pnp.unique_id)
-			return AE_OK;
-		if (strcmp(uid, adev->pnp.unique_id))
-			return AE_OK;
-	}
-
-	INIT_LIST_HEAD(&resource_list);
-	ret = acpi_dev_get_resources(adev, &resource_list,
-				     clk_lpss_is_mmio_resource, NULL);
-	if (ret < 0)
-		return AE_NO_MEMORY;
-
-	list_for_each_entry(rentry, &resource_list, node)
-		if (resource_type(&rentry->res) == IORESOURCE_MEM) {
-			*(struct resource *)retval = rentry->res;
-			break;
-		}
-
-	acpi_dev_free_resource_list(&resource_list);
-	return AE_OK;
-}
-
-/**
- * clk_register_lpss_gate - register LPSS clock gate
- * @name: name of this clock gate
- * @parent_name: parent clock name
- * @hid: ACPI _HID of the device
- * @uid: ACPI _UID of the device (optional)
- * @offset: LPSS PRV_CLOCK_PARAMS offset
- *
- * Creates and registers LPSS clock gate.
- */
-struct clk *clk_register_lpss_gate(const char *name, const char *parent_name,
-				   const char *hid, const char *uid,
-				   unsigned offset)
-{
-	struct resource res = { };
-	void __iomem *mmio_base;
-	acpi_status status;
-	struct clk *clk;
-
-	/*
-	 * First try to look the device and its mmio resource from the
-	 * ACPI namespace.
-	 */
-	status = acpi_get_devices(hid, clk_lpss_find_mmio, (void *)uid,
-				  (void **)&res);
-	if (ACPI_FAILURE(status) || !res.start)
-		return ERR_PTR(-ENODEV);
-
-	mmio_base = ioremap(res.start, resource_size(&res));
-	if (!mmio_base)
-		return ERR_PTR(-ENOMEM);
-
-	clk = clk_register_gate(NULL, name, parent_name, 0, mmio_base + offset,
-				0, 0, NULL);
-	if (IS_ERR(clk))
-		iounmap(mmio_base);
-
-	return clk;
-}
diff --git a/drivers/clk/x86/clk-lpss.h b/drivers/clk/x86/clk-lpss.h
deleted file mode 100644
index e9460f44229..00000000000
--- a/drivers/clk/x86/clk-lpss.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Intel Low Power Subsystem clock.
- *
- * Copyright (C) 2013, Intel Corporation
- * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
- *	    Heikki Krogerus <heikki.krogerus@linux.intel.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef __CLK_LPSS_H
-#define __CLK_LPSS_H
-
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/clk.h>
-
-#ifdef CONFIG_ACPI
-extern struct clk *clk_register_lpss_gate(const char *name,
-					  const char *parent_name,
-					  const char *hid, const char *uid,
-					  unsigned offset);
-#else
-static inline struct clk *clk_register_lpss_gate(const char *name,
-						 const char *parent_name,
-						 const char *hid,
-						 const char *uid,
-						 unsigned offset)
-{
-	return ERR_PTR(-ENODEV);
-}
-#endif
-
-#endif /* __CLK_LPSS_H */
diff --git a/drivers/clk/x86/clk-lpt.c b/drivers/clk/x86/clk-lpt.c
index 81298aeef7e..5cf4f468640 100644
--- a/drivers/clk/x86/clk-lpt.c
+++ b/drivers/clk/x86/clk-lpt.c
@@ -10,7 +10,6 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/acpi.h>
 #include <linux/clk.h>
 #include <linux/clkdev.h>
 #include <linux/clk-provider.h>
@@ -18,8 +17,6 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 
-#include "clk-lpss.h"
-
 #define PRV_CLOCK_PARAMS 0x800
 
 static int lpt_clk_probe(struct platform_device *pdev)
@@ -34,40 +31,6 @@ static int lpt_clk_probe(struct platform_device *pdev)
 
 	/* Shared DMA clock */
 	clk_register_clkdev(clk, "hclk", "INTL9C60.0.auto");
-
-	/* SPI clocks */
-	clk = clk_register_lpss_gate("spi0_clk", "lpss_clk", "INT33C0", NULL,
-				     PRV_CLOCK_PARAMS);
-	if (!IS_ERR(clk))
-		clk_register_clkdev(clk, NULL, "INT33C0:00");
-
-	clk = clk_register_lpss_gate("spi1_clk", "lpss_clk", "INT33C1", NULL,
-				     PRV_CLOCK_PARAMS);
-	if (!IS_ERR(clk))
-		clk_register_clkdev(clk, NULL, "INT33C1:00");
-
-	/* I2C clocks */
-	clk = clk_register_lpss_gate("i2c0_clk", "lpss_clk", "INT33C2", NULL,
-				     PRV_CLOCK_PARAMS);
-	if (!IS_ERR(clk))
-		clk_register_clkdev(clk, NULL, "INT33C2:00");
-
-	clk = clk_register_lpss_gate("i2c1_clk", "lpss_clk", "INT33C3", NULL,
-				     PRV_CLOCK_PARAMS);
-	if (!IS_ERR(clk))
-		clk_register_clkdev(clk, NULL, "INT33C3:00");
-
-	/* UART clocks */
-	clk = clk_register_lpss_gate("uart0_clk", "lpss_clk", "INT33C4", NULL,
-				     PRV_CLOCK_PARAMS);
-	if (!IS_ERR(clk))
-		clk_register_clkdev(clk, NULL, "INT33C4:00");
-
-	clk = clk_register_lpss_gate("uart1_clk", "lpss_clk", "INT33C5", NULL,
-				     PRV_CLOCK_PARAMS);
-	if (!IS_ERR(clk))
-		clk_register_clkdev(clk, NULL, "INT33C5:00");
-
 	return 0;
 }
 
@@ -79,8 +42,7 @@ static struct platform_driver lpt_clk_driver = {
 	.probe = lpt_clk_probe,
 };
 
-static int __init lpt_clk_init(void)
+int __init lpt_clk_init(void)
 {
 	return platform_driver_register(&lpt_clk_driver);
 }
-arch_initcall(lpt_clk_init);