aboutsummaryrefslogtreecommitdiff
path: root/drivers/acpi/ec.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/ec.c')
-rw-r--r--drivers/acpi/ec.c356
1 files changed, 158 insertions, 198 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index e6d4b084dca..9c52d87d6f0 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -45,35 +45,34 @@ ACPI_MODULE_NAME("acpi_ec")
#define ACPI_EC_DRIVER_NAME "ACPI Embedded Controller Driver"
#define ACPI_EC_DEVICE_NAME "Embedded Controller"
#define ACPI_EC_FILE_INFO "info"
-
+#undef PREFIX
+#define PREFIX "ACPI: EC: "
/* EC status register */
#define ACPI_EC_FLAG_OBF 0x01 /* Output buffer full */
#define ACPI_EC_FLAG_IBF 0x02 /* Input buffer full */
#define ACPI_EC_FLAG_BURST 0x10 /* burst mode */
#define ACPI_EC_FLAG_SCI 0x20 /* EC-SCI occurred */
-
/* EC commands */
-#define ACPI_EC_COMMAND_READ 0x80
-#define ACPI_EC_COMMAND_WRITE 0x81
-#define ACPI_EC_BURST_ENABLE 0x82
-#define ACPI_EC_BURST_DISABLE 0x83
-#define ACPI_EC_COMMAND_QUERY 0x84
-
+enum ec_command {
+ ACPI_EC_COMMAND_READ = 0x80,
+ ACPI_EC_COMMAND_WRITE = 0x81,
+ ACPI_EC_BURST_ENABLE = 0x82,
+ ACPI_EC_BURST_DISABLE = 0x83,
+ ACPI_EC_COMMAND_QUERY = 0x84,
+};
/* EC events */
-enum {
+enum ec_event {
ACPI_EC_EVENT_OBF_1 = 1, /* Output buffer full */
- ACPI_EC_EVENT_IBF_0, /* Input buffer empty */
+ ACPI_EC_EVENT_IBF_0, /* Input buffer empty */
};
-#define ACPI_EC_DELAY 50 /* Wait 50ms max. during EC ops */
+#define ACPI_EC_DELAY 500 /* Wait 500ms max. during EC ops */
#define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */
-#define ACPI_EC_UDELAY 100 /* Poll @ 100us increments */
-#define ACPI_EC_UDELAY_COUNT 1000 /* Wait 10ms max. during EC ops */
-enum {
- EC_INTR = 1, /* Output buffer full */
- EC_POLL, /* Input buffer empty */
-};
+static enum ec_mode {
+ EC_INTR = 1, /* Output buffer full */
+ EC_POLL, /* Input buffer empty */
+} acpi_ec_mode = EC_INTR;
static int acpi_ec_remove(struct acpi_device *device, int type);
static int acpi_ec_start(struct acpi_device *device);
@@ -93,22 +92,21 @@ static struct acpi_driver acpi_ec_driver = {
};
/* If we find an EC via the ECDT, we need to keep a ptr to its context */
-struct acpi_ec {
+static struct acpi_ec {
acpi_handle handle;
unsigned long uid;
- unsigned long gpe_bit;
+ unsigned long gpe;
unsigned long command_addr;
unsigned long data_addr;
unsigned long global_lock;
- struct semaphore sem;
- unsigned int expect_event;
+ struct mutex lock;
+ atomic_t query_pending;
atomic_t leaving_burst; /* 0 : No, 1 : Yes, 2: abort */
wait_queue_head_t wait;
} *ec_ecdt;
/* External interfaces use first EC only, so remember */
static struct acpi_device *first_ec;
-static int acpi_ec_mode = EC_INTR;
/* --------------------------------------------------------------------------
Transaction Management
@@ -134,54 +132,41 @@ static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
outb(data, ec->data_addr);
}
-static int acpi_ec_check_status(u8 status, u8 event)
+static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event)
{
- switch (event) {
- case ACPI_EC_EVENT_OBF_1:
+ u8 status = acpi_ec_read_status(ec);
+
+ if (event == ACPI_EC_EVENT_OBF_1) {
if (status & ACPI_EC_FLAG_OBF)
return 1;
- break;
- case ACPI_EC_EVENT_IBF_0:
+ } else if (event == ACPI_EC_EVENT_IBF_0) {
if (!(status & ACPI_EC_FLAG_IBF))
return 1;
- break;
- default:
- break;
}
return 0;
}
-static int acpi_ec_wait(struct acpi_ec *ec, u8 event)
+static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event)
{
- int i = (acpi_ec_mode == EC_POLL) ? ACPI_EC_UDELAY_COUNT : 0;
- long time_left;
-
- ec->expect_event = event;
- if (acpi_ec_check_status(acpi_ec_read_status(ec), event)) {
- ec->expect_event = 0;
- return 0;
- }
-
- do {
- if (acpi_ec_mode == EC_POLL) {
- udelay(ACPI_EC_UDELAY);
- } else {
- time_left = wait_event_timeout(ec->wait,
- !ec->expect_event,
- msecs_to_jiffies(ACPI_EC_DELAY));
- if (time_left > 0) {
- ec->expect_event = 0;
+ if (acpi_ec_mode == EC_POLL) {
+ unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
+ while (time_before(jiffies, delay)) {
+ if (acpi_ec_check_status(ec, event))
return 0;
- }
}
- if (acpi_ec_check_status(acpi_ec_read_status(ec), event)) {
- ec->expect_event = 0;
+ } else {
+ if (wait_event_timeout(ec->wait,
+ acpi_ec_check_status(ec, event),
+ msecs_to_jiffies(ACPI_EC_DELAY)) ||
+ acpi_ec_check_status(ec, event)) {
return 0;
+ } else {
+ printk(KERN_ERR PREFIX "acpi_ec_wait timeout,"
+ " status = %d, expect_event = %d\n",
+ acpi_ec_read_status(ec), event);
}
- } while (--i > 0);
-
- ec->expect_event = 0;
+ }
return -ETIME;
}
@@ -196,7 +181,6 @@ int acpi_ec_enter_burst_mode(struct acpi_ec *ec)
u8 tmp = 0;
u8 status = 0;
-
status = acpi_ec_read_status(ec);
if (status != -EINVAL && !(status & ACPI_EC_FLAG_BURST)) {
status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
@@ -212,7 +196,7 @@ int acpi_ec_enter_burst_mode(struct acpi_ec *ec)
atomic_set(&ec->leaving_burst, 0);
return 0;
- end:
+ end:
ACPI_EXCEPTION((AE_INFO, status, "EC wait, burst mode"));
return -1;
}
@@ -221,58 +205,68 @@ int acpi_ec_leave_burst_mode(struct acpi_ec *ec)
{
u8 status = 0;
-
status = acpi_ec_read_status(ec);
- if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)){
+ if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)) {
status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
- if(status)
+ if (status)
goto end;
acpi_ec_write_cmd(ec, ACPI_EC_BURST_DISABLE);
acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
}
atomic_set(&ec->leaving_burst, 1);
return 0;
- end:
+ end:
ACPI_EXCEPTION((AE_INFO, status, "EC leave burst mode"));
return -1;
}
-#endif /* ACPI_FUTURE_USAGE */
+#endif /* ACPI_FUTURE_USAGE */
static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
- const u8 *wdata, unsigned wdata_len,
- u8 *rdata, unsigned rdata_len)
+ const u8 * wdata, unsigned wdata_len,
+ u8 * rdata, unsigned rdata_len)
{
- int result;
+ int result = 0;
acpi_ec_write_cmd(ec, command);
- for (; wdata_len > 0; wdata_len --) {
+ for (; wdata_len > 0; --wdata_len) {
result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
- if (result)
- return result;
+ if (result) {
+ printk(KERN_ERR PREFIX
+ "write_cmd timeout, command = %d\n", command);
+ goto end;
+ }
acpi_ec_write_data(ec, *(wdata++));
}
- if (command == ACPI_EC_COMMAND_WRITE) {
+ if (!rdata_len) {
result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
- if (result)
- return result;
+ if (result) {
+ printk(KERN_ERR PREFIX
+ "finish-write timeout, command = %d\n", command);
+ goto end;
+ }
+ } else if (command == ACPI_EC_COMMAND_QUERY) {
+ atomic_set(&ec->query_pending, 0);
}
- for (; rdata_len > 0; rdata_len --) {
+ for (; rdata_len > 0; --rdata_len) {
result = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF_1);
- if (result)
- return result;
+ if (result) {
+ printk(KERN_ERR PREFIX "read timeout, command = %d\n",
+ command);
+ goto end;
+ }
*(rdata++) = acpi_ec_read_data(ec);
}
-
- return 0;
+ end:
+ return result;
}
static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
- const u8 *wdata, unsigned wdata_len,
- u8 *rdata, unsigned rdata_len)
+ const u8 * wdata, unsigned wdata_len,
+ u8 * rdata, unsigned rdata_len)
{
int status;
u32 glk;
@@ -280,36 +274,40 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
if (!ec || (wdata_len && !wdata) || (rdata_len && !rdata))
return -EINVAL;
- if (rdata)
- memset(rdata, 0, rdata_len);
+ if (rdata)
+ memset(rdata, 0, rdata_len);
+ mutex_lock(&ec->lock);
if (ec->global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return -ENODEV;
}
- down(&ec->sem);
+
+ /* Make sure GPE is enabled before doing transaction */
+ acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
if (status) {
- printk(KERN_DEBUG PREFIX "read EC, IB not empty\n");
+ printk(KERN_DEBUG PREFIX
+ "input buffer is not empty, aborting transaction\n");
goto end;
}
- status = acpi_ec_transaction_unlocked(ec, command,
- wdata, wdata_len,
- rdata, rdata_len);
+ status = acpi_ec_transaction_unlocked(ec, command,
+ wdata, wdata_len,
+ rdata, rdata_len);
-end:
- up(&ec->sem);
+ end:
if (ec->global_lock)
acpi_release_global_lock(glk);
+ mutex_unlock(&ec->lock);
return status;
}
-static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 *data)
+static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 * data)
{
int result;
u8 d;
@@ -322,15 +320,15 @@ static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 *data)
static int acpi_ec_write(struct acpi_ec *ec, u8 address, u8 data)
{
- u8 wdata[2] = { address, data };
- return acpi_ec_transaction(ec, ACPI_EC_COMMAND_WRITE,
+ u8 wdata[2] = { address, data };
+ return acpi_ec_transaction(ec, ACPI_EC_COMMAND_WRITE,
wdata, 2, NULL, 0);
}
/*
* Externally callable EC access functions. For now, assume 1 EC only
*/
-int ec_read(u8 addr, u8 *val)
+int ec_read(u8 addr, u8 * val)
{
struct acpi_ec *ec;
int err;
@@ -369,9 +367,9 @@ int ec_write(u8 addr, u8 val)
EXPORT_SYMBOL(ec_write);
-extern int ec_transaction(u8 command,
- const u8 *wdata, unsigned wdata_len,
- u8 *rdata, unsigned rdata_len)
+int ec_transaction(u8 command,
+ const u8 * wdata, unsigned wdata_len,
+ u8 * rdata, unsigned rdata_len)
{
struct acpi_ec *ec;
@@ -386,65 +384,49 @@ extern int ec_transaction(u8 command,
EXPORT_SYMBOL(ec_transaction);
-static int acpi_ec_query(struct acpi_ec *ec, u8 *data)
+static int acpi_ec_query(struct acpi_ec *ec, u8 * data)
{
int result;
- u8 d;
+ u8 d;
- if (!ec || !data)
- return -EINVAL;
+ if (!ec || !data)
+ return -EINVAL;
- /*
- * Query the EC to find out which _Qxx method we need to evaluate.
- * Note that successful completion of the query causes the ACPI_EC_SCI
- * bit to be cleared (and thus clearing the interrupt source).
- */
+ /*
+ * Query the EC to find out which _Qxx method we need to evaluate.
+ * Note that successful completion of the query causes the ACPI_EC_SCI
+ * bit to be cleared (and thus clearing the interrupt source).
+ */
- result = acpi_ec_transaction(ec, ACPI_EC_COMMAND_QUERY, NULL, 0, &d, 1);
- if (result)
- return result;
+ result = acpi_ec_transaction(ec, ACPI_EC_COMMAND_QUERY, NULL, 0, &d, 1);
+ if (result)
+ return result;
- if (!d)
- return -ENODATA;
+ if (!d)
+ return -ENODATA;
- *data = d;
- return 0;
+ *data = d;
+ return 0;
}
/* --------------------------------------------------------------------------
Event Management
-------------------------------------------------------------------------- */
-struct acpi_ec_query_data {
- acpi_handle handle;
- u8 data;
-};
-
static void acpi_ec_gpe_query(void *ec_cxt)
{
struct acpi_ec *ec = (struct acpi_ec *)ec_cxt;
u8 value = 0;
- static char object_name[8];
+ char object_name[8];
- if (!ec)
- goto end;
-
- value = acpi_ec_read_status(ec);
-
- if (!(value & ACPI_EC_FLAG_SCI))
- goto end;
-
- if (acpi_ec_query(ec, &value))
- goto end;
+ if (!ec || acpi_ec_query(ec, &value))
+ return;
snprintf(object_name, 8, "_Q%2.2X", value);
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluating %s", object_name));
+ printk(KERN_INFO PREFIX "evaluating %s\n", object_name);
acpi_evaluate_object(ec->handle, object_name, NULL, NULL);
-
- end:
- acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
}
static u32 acpi_ec_gpe_handler(void *data)
@@ -453,22 +435,18 @@ static u32 acpi_ec_gpe_handler(void *data)
u8 value;
struct acpi_ec *ec = (struct acpi_ec *)data;
- acpi_clear_gpe(NULL, ec->gpe_bit, ACPI_ISR);
- value = acpi_ec_read_status(ec);
-
if (acpi_ec_mode == EC_INTR) {
- if (acpi_ec_check_status(value, ec->expect_event)) {
- ec->expect_event = 0;
- wake_up(&ec->wait);
- }
+ wake_up(&ec->wait);
}
- if (value & ACPI_EC_FLAG_SCI) {
- status = acpi_os_execute(OSL_EC_BURST_HANDLER, acpi_ec_gpe_query, ec);
- return status == AE_OK ?
- ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
+ value = acpi_ec_read_status(ec);
+ if ((value & ACPI_EC_FLAG_SCI) && !atomic_read(&ec->query_pending)) {
+ atomic_set(&ec->query_pending, 1);
+ status =
+ acpi_os_execute(OSL_EC_BURST_HANDLER, acpi_ec_gpe_query,
+ ec);
}
- acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_ISR);
+
return status == AE_OK ?
ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
}
@@ -504,7 +482,6 @@ acpi_ec_space_handler(u32 function,
acpi_integer f_v = 0;
int i = 0;
-
if ((address > 0xFF) || !value || !handler_context)
return AE_BAD_PARAMETER;
@@ -518,7 +495,7 @@ acpi_ec_space_handler(u32 function,
switch (function) {
case ACPI_READ:
temp = 0;
- result = acpi_ec_read(ec, (u8) address, (u8 *) &temp);
+ result = acpi_ec_read(ec, (u8) address, (u8 *) & temp);
break;
case ACPI_WRITE:
result = acpi_ec_write(ec, (u8) address, (u8) temp);
@@ -571,18 +548,15 @@ static int acpi_ec_read_info(struct seq_file *seq, void *offset)
{
struct acpi_ec *ec = (struct acpi_ec *)seq->private;
-
if (!ec)
goto end;
- seq_printf(seq, "gpe bit: 0x%02x\n",
- (u32) ec->gpe_bit);
+ seq_printf(seq, "gpe: 0x%02x\n", (u32) ec->gpe);
seq_printf(seq, "ports: 0x%02x, 0x%02x\n",
- (u32) ec->command_addr,
- (u32) ec->data_addr);
+ (u32) ec->command_addr, (u32) ec->data_addr);
seq_printf(seq, "use global lock: %s\n",
ec->global_lock ? "yes" : "no");
- acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
+ acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
end:
return 0;
@@ -605,7 +579,6 @@ static int acpi_ec_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
-
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_ec_dir);
@@ -648,18 +621,17 @@ static int acpi_ec_add(struct acpi_device *device)
acpi_status status = AE_OK;
struct acpi_ec *ec = NULL;
-
if (!device)
return -EINVAL;
- ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
+ ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
if (!ec)
return -ENOMEM;
- memset(ec, 0, sizeof(struct acpi_ec));
ec->handle = device->handle;
ec->uid = -1;
- init_MUTEX(&ec->sem);
+ mutex_init(&ec->lock);
+ atomic_set(&ec->query_pending, 0);
if (acpi_ec_mode == EC_INTR) {
atomic_set(&ec->leaving_burst, 1);
init_waitqueue_head(&ec->wait);
@@ -669,8 +641,7 @@ static int acpi_ec_add(struct acpi_device *device)
acpi_driver_data(device) = ec;
/* Use the global lock for all EC transactions? */
- acpi_evaluate_integer(ec->handle, "_GLK", NULL,
- &ec->global_lock);
+ acpi_evaluate_integer(ec->handle, "_GLK", NULL, &ec->global_lock);
/* XXX we don't test uids, because on some boxes ecdt uid = 0, see:
http://bugzilla.kernel.org/show_bug.cgi?id=6111 */
@@ -679,7 +650,7 @@ static int acpi_ec_add(struct acpi_device *device)
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler);
- acpi_remove_gpe_handler(NULL, ec_ecdt->gpe_bit,
+ acpi_remove_gpe_handler(NULL, ec_ecdt->gpe,
&acpi_ec_gpe_handler);
kfree(ec_ecdt);
@@ -687,11 +658,10 @@ static int acpi_ec_add(struct acpi_device *device)
/* Get GPE bit assignment (EC events). */
/* TODO: Add support for _GPE returning a package */
- status =
- acpi_evaluate_integer(ec->handle, "_GPE", NULL,
- &ec->gpe_bit);
+ status = acpi_evaluate_integer(ec->handle, "_GPE", NULL, &ec->gpe);
if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "Obtaining GPE bit assignment"));
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Obtaining GPE bit assignment"));
result = -ENODEV;
goto end;
}
@@ -701,13 +671,13 @@ static int acpi_ec_add(struct acpi_device *device)
goto end;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s [%s] (gpe %d) interrupt mode.",
- acpi_device_name(device), acpi_device_bid(device),
- (u32) ec->gpe_bit));
+ acpi_device_name(device), acpi_device_bid(device),
+ (u32) ec->gpe));
if (!first_ec)
first_ec = device;
- end:
+ end:
if (result)
kfree(ec);
@@ -718,7 +688,6 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
{
struct acpi_ec *ec = NULL;
-
if (!device)
return -EINVAL;
@@ -761,7 +730,6 @@ static int acpi_ec_start(struct acpi_device *device)
acpi_status status = AE_OK;
struct acpi_ec *ec = NULL;
-
if (!device)
return -EINVAL;
@@ -782,27 +750,26 @@ static int acpi_ec_start(struct acpi_device *device)
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02lx, ports=0x%2lx,0x%2lx",
- ec->gpe_bit, ec->command_addr, ec->data_addr));
+ ec->gpe, ec->command_addr, ec->data_addr));
/*
* Install GPE handler
*/
- status = acpi_install_gpe_handler(NULL, ec->gpe_bit,
+ status = acpi_install_gpe_handler(NULL, ec->gpe,
ACPI_GPE_EDGE_TRIGGERED,
&acpi_ec_gpe_handler, ec);
if (ACPI_FAILURE(status)) {
return -ENODEV;
}
- acpi_set_gpe_type(NULL, ec->gpe_bit, ACPI_GPE_TYPE_RUNTIME);
- acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
+ acpi_set_gpe_type(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
+ acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
status = acpi_install_address_space_handler(ec->handle,
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler,
&acpi_ec_space_setup, ec);
if (ACPI_FAILURE(status)) {
- acpi_remove_gpe_handler(NULL, ec->gpe_bit,
- &acpi_ec_gpe_handler);
+ acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
return -ENODEV;
}
@@ -814,7 +781,6 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
acpi_status status = AE_OK;
struct acpi_ec *ec = NULL;
-
if (!device)
return -EINVAL;
@@ -826,9 +792,7 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
if (ACPI_FAILURE(status))
return -ENODEV;
- status =
- acpi_remove_gpe_handler(NULL, ec->gpe_bit,
- &acpi_ec_gpe_handler);
+ status = acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
if (ACPI_FAILURE(status))
return -ENODEV;
@@ -841,7 +805,7 @@ acpi_fake_ecdt_callback(acpi_handle handle,
{
acpi_status status;
- init_MUTEX(&ec_ecdt->sem);
+ mutex_init(&ec_ecdt->lock);
if (acpi_ec_mode == EC_INTR) {
init_waitqueue_head(&ec_ecdt->wait);
}
@@ -853,16 +817,15 @@ acpi_fake_ecdt_callback(acpi_handle handle,
ec_ecdt->uid = -1;
acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->uid);
- status =
- acpi_evaluate_integer(handle, "_GPE", NULL,
- &ec_ecdt->gpe_bit);
+ status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec_ecdt->gpe);
if (ACPI_FAILURE(status))
return status;
ec_ecdt->global_lock = TRUE;
ec_ecdt->handle = handle;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "GPE=0x%02lx, ports=0x%2lx, 0x%2lx",
- ec_ecdt->gpe_bit, ec_ecdt->command_addr, ec_ecdt->data_addr));
+ ec_ecdt->gpe, ec_ecdt->command_addr,
+ ec_ecdt->data_addr));
return AE_CTRL_TERMINATE;
}
@@ -884,12 +847,11 @@ static int __init acpi_ec_fake_ecdt(void)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Try to make an fake ECDT"));
- ec_ecdt = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
+ ec_ecdt = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
if (!ec_ecdt) {
ret = -ENOMEM;
goto error;
}
- memset(ec_ecdt, 0, sizeof(struct acpi_ec));
status = acpi_get_devices(ACPI_EC_HID,
acpi_fake_ecdt_callback, NULL, NULL);
@@ -901,7 +863,7 @@ static int __init acpi_ec_fake_ecdt(void)
goto error;
}
return 0;
- error:
+ error:
return ret;
}
@@ -921,30 +883,28 @@ static int __init acpi_ec_get_real_ecdt(void)
/*
* Generate a temporary ec context to use until the namespace is scanned
*/
- ec_ecdt = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
+ ec_ecdt = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
if (!ec_ecdt)
return -ENOMEM;
- memset(ec_ecdt, 0, sizeof(struct acpi_ec));
- init_MUTEX(&ec_ecdt->sem);
+ mutex_init(&ec_ecdt->lock);
if (acpi_ec_mode == EC_INTR) {
init_waitqueue_head(&ec_ecdt->wait);
}
ec_ecdt->command_addr = ecdt_ptr->ec_control.address;
ec_ecdt->data_addr = ecdt_ptr->ec_data.address;
- ec_ecdt->gpe_bit = ecdt_ptr->gpe_bit;
+ ec_ecdt->gpe = ecdt_ptr->gpe_bit;
/* use the GL just to be safe */
ec_ecdt->global_lock = TRUE;
ec_ecdt->uid = ecdt_ptr->uid;
- status =
- acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->handle);
+ status = acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->handle);
if (ACPI_FAILURE(status)) {
goto error;
}
return 0;
- error:
+ error:
ACPI_EXCEPTION((AE_INFO, status, "Could not use ECDT"));
kfree(ec_ecdt);
ec_ecdt = NULL;
@@ -970,14 +930,14 @@ int __init acpi_ec_ecdt_probe(void)
/*
* Install GPE handler
*/
- status = acpi_install_gpe_handler(NULL, ec_ecdt->gpe_bit,
+ status = acpi_install_gpe_handler(NULL, ec_ecdt->gpe,
ACPI_GPE_EDGE_TRIGGERED,
&acpi_ec_gpe_handler, ec_ecdt);
if (ACPI_FAILURE(status)) {
goto error;
}
- acpi_set_gpe_type(NULL, ec_ecdt->gpe_bit, ACPI_GPE_TYPE_RUNTIME);
- acpi_enable_gpe(NULL, ec_ecdt->gpe_bit, ACPI_NOT_ISR);
+ acpi_set_gpe_type(NULL, ec_ecdt->gpe, ACPI_GPE_TYPE_RUNTIME);
+ acpi_enable_gpe(NULL, ec_ecdt->gpe, ACPI_NOT_ISR);
status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
ACPI_ADR_SPACE_EC,
@@ -985,7 +945,7 @@ int __init acpi_ec_ecdt_probe(void)
&acpi_ec_space_setup,
ec_ecdt);
if (ACPI_FAILURE(status)) {
- acpi_remove_gpe_handler(NULL, ec_ecdt->gpe_bit,
+ acpi_remove_gpe_handler(NULL, ec_ecdt->gpe,
&acpi_ec_gpe_handler);
goto error;
}
@@ -1004,7 +964,6 @@ static int __init acpi_ec_init(void)
{
int result = 0;
-
if (acpi_disabled)
return 0;
@@ -1057,7 +1016,8 @@ static int __init acpi_ec_set_intr_mode(char *str)
acpi_ec_mode = EC_POLL;
}
acpi_ec_driver.ops.add = acpi_ec_add;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "EC %s mode.\n", intr ? "interrupt" : "polling"));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "EC %s mode.\n",
+ intr ? "interrupt" : "polling"));
return 1;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 00:54:57 +0000