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-rw-r--r--drivers/acpi/bus.c2
-rw-r--r--drivers/acpi/ec.c26
-rw-r--r--drivers/acpi/fan.c40
-rw-r--r--drivers/acpi/processor_throttling.c4
-rw-r--r--include/acpi/acpi_bus.h3
5 files changed, 63 insertions, 12 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index d7a115c362d1b5..f4487c38d9f294 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -200,7 +200,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
* Get device's current power state
*/
acpi_bus_get_power(device->handle, &device->power.state);
- if (state == device->power.state) {
+ if ((state == device->power.state) && !device->flags.force_power_state) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
state));
return 0;
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 97dc16155a556d..987b967c746707 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -26,6 +26,9 @@
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
+/* Uncomment next line to get verbose print outs*/
+/* #define DEBUG */
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
@@ -47,9 +50,6 @@
#undef PREFIX
#define PREFIX "ACPI: EC: "
-/* Uncomment next line to get verbose print outs*/
-/* #define DEBUG */
-
/* EC status register */
#define ACPI_EC_FLAG_OBF 0x01 /* Output buffer full */
#define ACPI_EC_FLAG_IBF 0x02 /* Input buffer full */
@@ -82,6 +82,7 @@ enum {
EC_FLAGS_ADDRESS, /* Address is being written */
EC_FLAGS_NO_WDATA_GPE, /* Don't expect WDATA GPE event */
EC_FLAGS_WDATA, /* Data is being written */
+ EC_FLAGS_NO_OBF1_GPE, /* Don't expect GPE before read */
};
static int acpi_ec_remove(struct acpi_device *device, int type);
@@ -138,26 +139,26 @@ static struct acpi_ec {
static inline u8 acpi_ec_read_status(struct acpi_ec *ec)
{
u8 x = inb(ec->command_addr);
- pr_debug(PREFIX "---> status = 0x%2x\n", x);
+ pr_debug(PREFIX "---> status = 0x%2.2x\n", x);
return x;
}
static inline u8 acpi_ec_read_data(struct acpi_ec *ec)
{
u8 x = inb(ec->data_addr);
- pr_debug(PREFIX "---> data = 0x%2x\n", x);
+ pr_debug(PREFIX "---> data = 0x%2.2x\n", x);
return inb(ec->data_addr);
}
static inline void acpi_ec_write_cmd(struct acpi_ec *ec, u8 command)
{
- pr_debug(PREFIX "<--- command = 0x%2x\n", command);
+ pr_debug(PREFIX "<--- command = 0x%2.2x\n", command);
outb(command, ec->command_addr);
}
static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
{
- pr_debug(PREFIX "<--- data = 0x%2x\n", data);
+ pr_debug(PREFIX "<--- data = 0x%2.2x\n", data);
outb(data, ec->data_addr);
}
@@ -179,6 +180,10 @@ static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event)
static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
{
int ret = 0;
+
+ if (unlikely(event == ACPI_EC_EVENT_OBF_1 &&
+ test_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags)))
+ force_poll = 1;
if (unlikely(test_bit(EC_FLAGS_ADDRESS, &ec->flags) &&
test_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags)))
force_poll = 1;
@@ -192,7 +197,12 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
goto end;
clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
if (acpi_ec_check_status(ec, event)) {
- if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) {
+ if (event == ACPI_EC_EVENT_OBF_1) {
+ /* miss OBF_1 GPE, don't expect it */
+ pr_info(PREFIX "missing OBF confirmation, "
+ "don't expect it any longer.\n");
+ set_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags);
+ } else if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) {
/* miss address GPE, don't expect it anymore */
pr_info(PREFIX "missing address confirmation, "
"don't expect it any longer.\n");
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index a5a5532db26808..a6e149d692cbd3 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -47,6 +47,8 @@ MODULE_LICENSE("GPL");
static int acpi_fan_add(struct acpi_device *device);
static int acpi_fan_remove(struct acpi_device *device, int type);
+static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state);
+static int acpi_fan_resume(struct acpi_device *device);
static const struct acpi_device_id fan_device_ids[] = {
{"PNP0C0B", 0},
@@ -61,6 +63,8 @@ static struct acpi_driver acpi_fan_driver = {
.ops = {
.add = acpi_fan_add,
.remove = acpi_fan_remove,
+ .suspend = acpi_fan_suspend,
+ .resume = acpi_fan_resume,
},
};
@@ -191,6 +195,10 @@ static int acpi_fan_add(struct acpi_device *device)
goto end;
}
+ device->flags.force_power_state = 1;
+ acpi_bus_set_power(device->handle, state);
+ device->flags.force_power_state = 0;
+
result = acpi_fan_add_fs(device);
if (result)
goto end;
@@ -216,6 +224,38 @@ static int acpi_fan_remove(struct acpi_device *device, int type)
return 0;
}
+static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state)
+{
+ if (!device)
+ return -EINVAL;
+
+ acpi_bus_set_power(device->handle, ACPI_STATE_D0);
+
+ return AE_OK;
+}
+
+static int acpi_fan_resume(struct acpi_device *device)
+{
+ int result = 0;
+ int power_state = 0;
+
+ if (!device)
+ return -EINVAL;
+
+ result = acpi_bus_get_power(device->handle, &power_state);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Error reading fan power state\n"));
+ return result;
+ }
+
+ device->flags.force_power_state = 1;
+ acpi_bus_set_power(device->handle, power_state);
+ device->flags.force_power_state = 0;
+
+ return result;
+}
+
static int __init acpi_fan_init(void)
{
int result = 0;
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 6742d7bc4777d8..1685b40abda7c2 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -775,12 +775,12 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
acpi_processor_get_throttling_states(pr) ||
acpi_processor_get_platform_limit(pr))
{
- if (acpi_processor_get_fadt_info(pr))
- return 0;
pr->throttling.acpi_processor_get_throttling =
&acpi_processor_get_throttling_fadt;
pr->throttling.acpi_processor_set_throttling =
&acpi_processor_set_throttling_fadt;
+ if (acpi_processor_get_fadt_info(pr))
+ return 0;
} else {
pr->throttling.acpi_processor_get_throttling =
&acpi_processor_get_throttling_ptc;
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 19c3ead2a90bb7..7b74b60a68a47b 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -168,7 +168,8 @@ struct acpi_device_flags {
u32 power_manageable:1;
u32 performance_manageable:1;
u32 wake_capable:1; /* Wakeup(_PRW) supported? */
- u32 reserved:20;
+ u32 force_power_state:1;
+ u32 reserved:19;
};
/* File System */
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-30 14:37:00 +0000