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Merge branches 'acpi-scan', 'acpi-pm', 'acpi-lpss' and 'acpi-processor' 

* acpi-scan:
  ACPI: Add _DEP support to fix battery issue on Asus T100TA

* acpi-pm:
  ACPI / sleep: Drain outstanding events after disabling multiple GPEs
  ACPI / PM: Fixed a typo in a comment

* acpi-lpss:
  dmaengine: dw: enable runtime PM
  ACPI / LPSS: introduce a 'proxy' device to power on LPSS for DMA
  ACPI / LPSS: allow to use specific PM domain during ->probe()
  ACPI / LPSS: add all LPSS devices to the specific power domain

* acpi-processor:
  ACPI / cpuidle: avoid assigning signed errno to acpi_status
  ACPI / processor: remove unused variabled from acpi_processor_power structure
  ACPI / processor: Update the comments in processor.h
wifi-calibration
Rafael J. Wysocki 2014-12-08 19:52:16 +01:00
parent 1b07db3178 40e7fcb192 c52fa70c79 bb32baf76e 6fd8050a35
commit 69bad361e6
11 changed files with 181 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
drivers/acpi/acpi_lpss.c
View File

@ -1,7 +1,7 @@
/*
* ACPI support for Intel Lynxpoint LPSS.
*
* Copyright (C) 2013, Intel Corporation
* Copyright (C) 2013, 2014, Intel Corporation
* Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
* Rafael J. Wysocki <rafael.j.wysocki@intel.com>
*
@ -60,6 +60,8 @@ ACPI_MODULE_NAME("acpi_lpss");
#define LPSS_CLK_DIVIDER BIT(2)
#define LPSS_LTR BIT(3)
#define LPSS_SAVE_CTX BIT(4)
#define LPSS_DEV_PROXY BIT(5)
#define LPSS_PROXY_REQ BIT(6)
struct lpss_private_data;
@ -70,8 +72,10 @@ struct lpss_device_desc {
void (*setup)(struct lpss_private_data *pdata);
};
static struct device *proxy_device;
static struct lpss_device_desc lpss_dma_desc = {
.flags = LPSS_CLK,
.flags = LPSS_CLK | LPSS_PROXY_REQ,
};
struct lpss_private_data {
@ -146,22 +150,24 @@ static struct lpss_device_desc byt_pwm_dev_desc = {
};
static struct lpss_device_desc byt_uart_dev_desc = {
.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX |
LPSS_DEV_PROXY,
.prv_offset = 0x800,
.setup = lpss_uart_setup,
};
static struct lpss_device_desc byt_spi_dev_desc = {
.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX |
LPSS_DEV_PROXY,
.prv_offset = 0x400,
};
static struct lpss_device_desc byt_sdio_dev_desc = {
.flags = LPSS_CLK,
.flags = LPSS_CLK | LPSS_DEV_PROXY,
};
static struct lpss_device_desc byt_i2c_dev_desc = {
.flags = LPSS_CLK | LPSS_SAVE_CTX,
.flags = LPSS_CLK | LPSS_SAVE_CTX | LPSS_DEV_PROXY,
.prv_offset = 0x800,
.setup = byt_i2c_setup,
};
@ -368,6 +374,8 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
adev->driver_data = pdata;
pdev = acpi_create_platform_device(adev);
if (!IS_ERR_OR_NULL(pdev)) {
if (!proxy_device && dev_desc->flags & LPSS_DEV_PROXY)
proxy_device = &pdev->dev;
return 1;
}
@ -499,14 +507,15 @@ static void acpi_lpss_set_ltr(struct device *dev, s32 val)
/**
* acpi_lpss_save_ctx() - Save the private registers of LPSS device
* @dev: LPSS device
* @pdata: pointer to the private data of the LPSS device
*
* Most LPSS devices have private registers which may loose their context when
* the device is powered down. acpi_lpss_save_ctx() saves those registers into
* prv_reg_ctx array.
*/
static void acpi_lpss_save_ctx(struct device *dev)
static void acpi_lpss_save_ctx(struct device *dev,
struct lpss_private_data *pdata)
{
struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
unsigned int i;
for (i = 0; i < LPSS_PRV_REG_COUNT; i++) {
@ -521,12 +530,13 @@ static void acpi_lpss_save_ctx(struct device *dev)
/**
* acpi_lpss_restore_ctx() - Restore the private registers of LPSS device
* @dev: LPSS device
* @pdata: pointer to the private data of the LPSS device
*
* Restores the registers that were previously stored with acpi_lpss_save_ctx().
*/
static void acpi_lpss_restore_ctx(struct device *dev)
static void acpi_lpss_restore_ctx(struct device *dev,
struct lpss_private_data *pdata)
{
struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
unsigned int i;
/*
@ -549,23 +559,31 @@ static void acpi_lpss_restore_ctx(struct device *dev)
#ifdef CONFIG_PM_SLEEP
static int acpi_lpss_suspend_late(struct device *dev)
{
int ret = pm_generic_suspend_late(dev);
struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
int ret;
ret = pm_generic_suspend_late(dev);
if (ret)
return ret;
acpi_lpss_save_ctx(dev);
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
acpi_lpss_save_ctx(dev, pdata);
return acpi_dev_suspend_late(dev);
}
static int acpi_lpss_resume_early(struct device *dev)
{
int ret = acpi_dev_resume_early(dev);
struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
int ret;
ret = acpi_dev_resume_early(dev);
if (ret)
return ret;
acpi_lpss_restore_ctx(dev);
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
acpi_lpss_restore_ctx(dev, pdata);
return pm_generic_resume_early(dev);
}
#endif /* CONFIG_PM_SLEEP */
@ -573,23 +591,44 @@ static int acpi_lpss_resume_early(struct device *dev)
#ifdef CONFIG_PM_RUNTIME
static int acpi_lpss_runtime_suspend(struct device *dev)
{
int ret = pm_generic_runtime_suspend(dev);
struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
int ret;
ret = pm_generic_runtime_suspend(dev);
if (ret)
return ret;
acpi_lpss_save_ctx(dev);
return acpi_dev_runtime_suspend(dev);
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
acpi_lpss_save_ctx(dev, pdata);
ret = acpi_dev_runtime_suspend(dev);
if (ret)
return ret;
if (pdata->dev_desc->flags & LPSS_PROXY_REQ && proxy_device)
return pm_runtime_put_sync_suspend(proxy_device);
return 0;
}
static int acpi_lpss_runtime_resume(struct device *dev)
{
int ret = acpi_dev_runtime_resume(dev);
struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
int ret;
if (pdata->dev_desc->flags & LPSS_PROXY_REQ && proxy_device) {
ret = pm_runtime_get_sync(proxy_device);
if (ret)
return ret;
}
ret = acpi_dev_runtime_resume(dev);
if (ret)
return ret;
acpi_lpss_restore_ctx(dev);
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
acpi_lpss_restore_ctx(dev, pdata);
return pm_generic_runtime_resume(dev);
}
#endif /* CONFIG_PM_RUNTIME */
@ -631,30 +670,27 @@ static int acpi_lpss_platform_notify(struct notifier_block *nb,
return 0;
pdata = acpi_driver_data(adev);
if (!pdata || !pdata->mmio_base)
if (!pdata)
return 0;
if (pdata->mmio_size < pdata->dev_desc->prv_offset + LPSS_LTR_SIZE) {
if (pdata->mmio_base &&
pdata->mmio_size < pdata->dev_desc->prv_offset + LPSS_LTR_SIZE) {
dev_err(&pdev->dev, "MMIO size insufficient to access LTR\n");
return 0;
}
switch (action) {
case BUS_NOTIFY_BOUND_DRIVER:
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
pdev->dev.pm_domain = &acpi_lpss_pm_domain;
break;
case BUS_NOTIFY_UNBOUND_DRIVER:
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
pdev->dev.pm_domain = NULL;
break;
case BUS_NOTIFY_ADD_DEVICE:
pdev->dev.pm_domain = &acpi_lpss_pm_domain;
if (pdata->dev_desc->flags & LPSS_LTR)
return sysfs_create_group(&pdev->dev.kobj,
&lpss_attr_group);
break;
case BUS_NOTIFY_DEL_DEVICE:
if (pdata->dev_desc->flags & LPSS_LTR)
sysfs_remove_group(&pdev->dev.kobj, &lpss_attr_group);
pdev->dev.pm_domain = NULL;
break;
default:
break;
}

4
drivers/acpi/battery.c
View File

@ -1180,6 +1180,10 @@ static int acpi_battery_add(struct acpi_device *device)
if (!device)
return -EINVAL;
if (device->dep_unmet)
return -EPROBE_DEFER;
battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
if (!battery)
return -ENOMEM;

2
drivers/acpi/device_pm.c
View File

@ -201,7 +201,7 @@ int acpi_device_set_power(struct acpi_device *device, int state)
* Transition Power
* ----------------
* In accordance with the ACPI specification first apply power (via
* power resources) and then evalute _PSx.
* power resources) and then evaluate _PSx.
*/
if (device->power.flags.power_resources) {
result = acpi_power_transition(device, state);

14
drivers/acpi/processor_idle.c
View File

@ -334,10 +334,10 @@ static int acpi_processor_get_power_info_default(struct acpi_processor *pr)
static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
{
acpi_status status = 0;
acpi_status status;
u64 count;
int current_count;
int i;
int i, ret = 0;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *cst;
@ -358,7 +358,7 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
/* There must be at least 2 elements */
if (!cst || (cst->type != ACPI_TYPE_PACKAGE) || cst->package.count < 2) {
printk(KERN_ERR PREFIX "not enough elements in _CST\n");
status = -EFAULT;
ret = -EFAULT;
goto end;
}
@ -367,7 +367,7 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
/* Validate number of power states. */
if (count < 1 || count != cst->package.count - 1) {
printk(KERN_ERR PREFIX "count given by _CST is not valid\n");
status = -EFAULT;
ret = -EFAULT;
goto end;
}
@ -489,12 +489,12 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
/* Validate number of power states discovered */
if (current_count < 2)
status = -EFAULT;
ret = -EFAULT;
end:
kfree(buffer.pointer);
return status;
return ret;
}
static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
@ -1111,7 +1111,7 @@ static int acpi_processor_registered;
int acpi_processor_power_init(struct acpi_processor *pr)
{
acpi_status status = 0;
acpi_status status;
int retval;
struct cpuidle_device *dev;
static int first_run;

85
drivers/acpi/scan.c
View File

@ -36,6 +36,8 @@ bool acpi_force_hot_remove;
static const char *dummy_hid = "device";
static LIST_HEAD(acpi_dep_list);
static DEFINE_MUTEX(acpi_dep_list_lock);
static LIST_HEAD(acpi_bus_id_list);
static DEFINE_MUTEX(acpi_scan_lock);
static LIST_HEAD(acpi_scan_handlers_list);
@ -43,6 +45,12 @@ DEFINE_MUTEX(acpi_device_lock);
LIST_HEAD(acpi_wakeup_device_list);
static DEFINE_MUTEX(acpi_hp_context_lock);
struct acpi_dep_data {
struct list_head node;
acpi_handle master;
acpi_handle slave;
};
struct acpi_device_bus_id{
char bus_id[15];
unsigned int instance_no;
@ -2193,6 +2201,59 @@ static void acpi_scan_init_hotplug(struct acpi_device *adev)
}
}
static void acpi_device_dep_initialize(struct acpi_device *adev)
{
struct acpi_dep_data *dep;
struct acpi_handle_list dep_devices;
acpi_status status;
int i;
if (!acpi_has_method(adev->handle, "_DEP"))
return;
status = acpi_evaluate_reference(adev->handle, "_DEP", NULL,
&dep_devices);
if (ACPI_FAILURE(status)) {
dev_err(&adev->dev, "Failed to evaluate _DEP.\n");
return;
}
for (i = 0; i < dep_devices.count; i++) {
struct acpi_device_info *info;
int skip;
status = acpi_get_object_info(dep_devices.handles[i], &info);
if (ACPI_FAILURE(status)) {
dev_err(&adev->dev, "Error reading device info\n");
continue;
}
/*
* Skip the dependency of Windows System Power
* Management Controller
*/
skip = info->valid & ACPI_VALID_HID &&
!strcmp(info->hardware_id.string, "INT3396");
kfree(info);
if (skip)
continue;
dep = kzalloc(sizeof(struct acpi_dep_data), GFP_KERNEL);
if (!dep)
return;
dep->master = dep_devices.handles[i];
dep->slave = adev->handle;
adev->dep_unmet++;
mutex_lock(&acpi_dep_list_lock);
list_add_tail(&dep->node , &acpi_dep_list);
mutex_unlock(&acpi_dep_list_lock);
}
}
static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
void *not_used, void **return_value)
{
@ -2219,6 +2280,7 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
return AE_CTRL_DEPTH;
acpi_scan_init_hotplug(device);
acpi_device_dep_initialize(device);
out:
if (!*return_value)
@ -2339,6 +2401,29 @@ static void acpi_bus_attach(struct acpi_device *device)
device->handler->hotplug.notify_online(device);
}
void acpi_walk_dep_device_list(acpi_handle handle)
{
struct acpi_dep_data *dep, *tmp;
struct acpi_device *adev;
mutex_lock(&acpi_dep_list_lock);
list_for_each_entry_safe(dep, tmp, &acpi_dep_list, node) {
if (dep->master == handle) {
acpi_bus_get_device(dep->slave, &adev);
if (!adev)
continue;
adev->dep_unmet--;
if (!adev->dep_unmet)
acpi_bus_attach(adev);
list_del(&dep->node);
kfree(dep);
}
}
mutex_unlock(&acpi_dep_list_lock);
}
EXPORT_SYMBOL_GPL(acpi_walk_dep_device_list);
/**
* acpi_bus_scan - Add ACPI device node objects in a given namespace scope.
* @handle: Root of the namespace scope to scan.

2
drivers/acpi/sleep.c
View File

@ -630,6 +630,7 @@ static int acpi_freeze_begin(void)
static int acpi_freeze_prepare(void)
{
acpi_enable_all_wakeup_gpes();
acpi_os_wait_events_complete();
enable_irq_wake(acpi_gbl_FADT.sci_interrupt);
return 0;
}
@ -825,6 +826,7 @@ static void acpi_power_off_prepare(void)
/* Prepare to power off the system */
acpi_sleep_prepare(ACPI_STATE_S5);
acpi_disable_all_gpes();
acpi_os_wait_events_complete();
}
static void acpi_power_off(void)

11
drivers/dma/dw/core.c
View File

@ -22,6 +22,7 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include "../dmaengine.h"
#include "internal.h"
@ -1504,6 +1505,9 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
dw->regs = chip->regs;
chip->dw = dw;
pm_runtime_enable(chip->dev);
pm_runtime_get_sync(chip->dev);
dw_params = dma_read_byaddr(chip->regs, DW_PARAMS);
autocfg = dw_params >> DW_PARAMS_EN & 0x1;
@ -1667,11 +1671,14 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
dev_info(chip->dev, "DesignWare DMA Controller, %d channels\n",
nr_channels);
pm_runtime_put_sync_suspend(chip->dev);
return 0;
err_dma_register:
free_irq(chip->irq, dw);
err_pdata:
pm_runtime_put_sync_suspend(chip->dev);
return err;
}
EXPORT_SYMBOL_GPL(dw_dma_probe);
@ -1681,6 +1688,8 @@ int dw_dma_remove(struct dw_dma_chip *chip)
struct dw_dma *dw = chip->dw;
struct dw_dma_chan *dwc, *_dwc;
pm_runtime_get_sync(chip->dev);
dw_dma_off(dw);
dma_async_device_unregister(&dw->dma);
@ -1693,6 +1702,8 @@ int dw_dma_remove(struct dw_dma_chip *chip)
channel_clear_bit(dw, CH_EN, dwc->mask);
}
pm_runtime_put_sync_suspend(chip->dev);
pm_runtime_disable(chip->dev);
return 0;
}
EXPORT_SYMBOL_GPL(dw_dma_remove);

1
drivers/i2c/i2c-core.c
View File

@ -403,6 +403,7 @@ static int acpi_i2c_install_space_handler(struct i2c_adapter *adapter)
return -ENOMEM;
}
acpi_walk_dep_device_list(handle);
return 0;
}

1
include/acpi/acpi_bus.h
View File

@ -372,6 +372,7 @@ struct acpi_device {
void *driver_data;
struct device dev;
unsigned int physical_node_count;
unsigned int dep_unmet;
struct list_head physical_node_list;
struct mutex physical_node_lock;
void (*remove)(struct acpi_device *);

7
include/acpi/processor.h
View File

@ -67,9 +67,6 @@ struct acpi_processor_cx {
};
struct acpi_processor_power {
struct acpi_processor_cx *state;
unsigned long bm_check_timestamp;
u32 default_state;
int count;
struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
int timer_broadcast_on_state;
@ -313,11 +310,13 @@ static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
#endif /* CONFIG_CPU_FREQ */
/* in processor_core.c */
void acpi_processor_set_pdc(acpi_handle handle);
int acpi_get_apicid(acpi_handle, int type, u32 acpi_id);
int acpi_map_cpuid(int apic_id, u32 acpi_id);
int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);
/* in processor_pdc.c */
void acpi_processor_set_pdc(acpi_handle handle);
/* in processor_throttling.c */
int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
int acpi_processor_get_throttling_info(struct acpi_processor *pr);

1
include/linux/acpi.h
View File

@ -432,6 +432,7 @@ extern bool acpi_driver_match_device(struct device *dev,
const struct device_driver *drv);
int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *);
int acpi_device_modalias(struct device *, char *, int);
void acpi_walk_dep_device_list(acpi_handle handle);
struct platform_device *acpi_create_platform_device(struct acpi_device *);
#define ACPI_PTR(_ptr) (_ptr)