Hi,
Here is the final set of EC init patches.
Renamed ec_ecdt into boot_ec, hope that's ok...
Regards,
Alex.
>From nobody Thu Mar 1 01:31:38 2007
Subject: [PATCH 1/9] ACPI: EC: Make EC to initialize first in ACPI
To: Alexey Starikovskiy <[EMAIL PROTECTED]>
Date: Thu, 01 Mar 2007 01:31:38 +0300
Message-ID: <[EMAIL PROTECTED]>
User-Agent: StGIT/0.11
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
---
drivers/acpi/Makefile | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 5956e9f..9623aac 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -1,6 +1,6 @@
#
# Makefile for the Linux ACPI interpreter
-#
+#
export ACPI_CFLAGS
@@ -32,16 +32,17 @@ #
processor-objs += processor_core.o processor_throttling.o \
processor_idle.o processor_thermal.o
ifdef CONFIG_CPU_FREQ
-processor-objs += processor_perflib.o
+processor-objs += processor_perflib.o
endif
obj-y += sleep/
obj-y += bus.o glue.o
obj-y += scan.o
+# Keep EC driver first. Initialization of others depend on it.
+obj-$(CONFIG_ACPI_EC) += ec.o
obj-$(CONFIG_ACPI_AC) += ac.o
obj-$(CONFIG_ACPI_BATTERY) += battery.o
obj-$(CONFIG_ACPI_BUTTON) += button.o
-obj-$(CONFIG_ACPI_EC) += ec.o
obj-$(CONFIG_ACPI_FAN) += fan.o
obj-$(CONFIG_ACPI_DOCK) += dock.o
obj-$(CONFIG_ACPI_BAY) += bay.o
>From nobody Thu Mar 1 01:31:39 2007
Subject: [PATCH 2/9] ACPI: EC: "Fake ECDT" workaround is not needed any longer.
To: Alexey Starikovskiy <[EMAIL PROTECTED]>
Date: Thu, 01 Mar 2007 01:31:39 +0300
Message-ID: <[EMAIL PROTECTED]>
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
User-Agent: StGIT/0.11
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
---
drivers/acpi/ec.c | 80 -----------------------------------------------------
1 files changed, 0 insertions(+), 80 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index ab68883..9a65372 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -800,74 +800,6 @@ static int acpi_ec_stop(struct acpi_devi
return 0;
}
-static acpi_status __init
-acpi_fake_ecdt_callback(acpi_handle handle,
- u32 Level, void *context, void **retval)
-{
- acpi_status status;
-
- mutex_init(&ec_ecdt->lock);
- if (acpi_ec_mode == EC_INTR) {
- init_waitqueue_head(&ec_ecdt->wait);
- }
- status = acpi_walk_resources(handle, METHOD_NAME__CRS,
- acpi_ec_io_ports, ec_ecdt);
- if (ACPI_FAILURE(status))
- return status;
-
- ec_ecdt->uid = -1;
- acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->uid);
-
- 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, ec_ecdt->command_addr,
- ec_ecdt->data_addr));
-
- return AE_CTRL_TERMINATE;
-}
-
-/*
- * Some BIOS (such as some from Gateway laptops) access EC region very early
- * such as in BAT0._INI or EC._INI before an EC device is found and
- * do not provide an ECDT. According to ACPI spec, ECDT isn't mandatorily
- * required, but if EC regison is accessed early, it is required.
- * The routine tries to workaround the BIOS bug by pre-scan EC device
- * It assumes that _CRS, _HID, _GPE, _UID methods of EC don't touch any
- * op region (since _REG isn't invoked yet). The assumption is true for
- * all systems found.
- */
-static int __init acpi_ec_fake_ecdt(void)
-{
- acpi_status status;
- int ret = 0;
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Try to make an fake ECDT"));
-
- ec_ecdt = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
- if (!ec_ecdt) {
- ret = -ENOMEM;
- goto error;
- }
-
- status = acpi_get_devices(ACPI_EC_HID,
- acpi_fake_ecdt_callback, NULL, NULL);
- if (ACPI_FAILURE(status)) {
- kfree(ec_ecdt);
- ec_ecdt = NULL;
- ret = -ENODEV;
- ACPI_EXCEPTION((AE_INFO, status, "Can't make an fake ECDT"));
- goto error;
- }
- return 0;
- error:
- return ret;
-}
-
static int __init acpi_ec_get_real_ecdt(void)
{
acpi_status status;
@@ -912,17 +844,12 @@ static int __init acpi_ec_get_real_ecdt(
return -ENODEV;
}
-static int __initdata acpi_fake_ecdt_enabled;
int __init acpi_ec_ecdt_probe(void)
{
acpi_status status;
int ret;
ret = acpi_ec_get_real_ecdt();
- /* Try to make a fake ECDT */
- if (ret && acpi_fake_ecdt_enabled) {
- ret = acpi_ec_fake_ecdt();
- }
if (ret)
return 0;
@@ -996,13 +923,6 @@ static void __exit acpi_ec_exit(void)
}
#endif /* 0 */
-static int __init acpi_fake_ecdt_setup(char *str)
-{
- acpi_fake_ecdt_enabled = 1;
- return 1;
-}
-
-__setup("acpi_fake_ecdt", acpi_fake_ecdt_setup);
static int __init acpi_ec_set_intr_mode(char *str)
{
int intr;
>From nobody Thu Mar 1 01:31:39 2007
Subject: [PATCH 3/9] ACPI: EC: enable burst functionality in EC.
To: Alexey Starikovskiy <[EMAIL PROTECTED]>
Date: Thu, 01 Mar 2007 01:31:39 +0300
Message-ID: <[EMAIL PROTECTED]>
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
User-Agent: StGIT/0.11
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
---
drivers/acpi/ec.c | 96 ++++++++++++++++++++++-------------------------------
1 files changed, 40 insertions(+), 56 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 9a65372..816caec 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -100,7 +100,6 @@ static struct acpi_ec {
unsigned long global_lock;
struct mutex lock;
atomic_t query_pending;
- atomic_t leaving_burst; /* 0 : No, 1 : Yes, 2: abort */
wait_queue_head_t wait;
} *ec_ecdt;
@@ -170,56 +169,6 @@ static int acpi_ec_wait(struct acpi_ec *
return -ETIME;
}
-#ifdef ACPI_FUTURE_USAGE
-/*
- * Note: samsung nv5000 doesn't work with ec burst mode.
- * http://bugzilla.kernel.org/show_bug.cgi?id=4980
- */
-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);
- if (status)
- goto end;
- acpi_ec_write_cmd(ec, ACPI_EC_BURST_ENABLE);
- status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF_1);
- tmp = acpi_ec_read_data(ec);
- if (tmp != 0x90) { /* Burst ACK byte */
- return -EINVAL;
- }
- }
-
- atomic_set(&ec->leaving_burst, 0);
- return 0;
- end:
- ACPI_EXCEPTION((AE_INFO, status, "EC wait, burst mode"));
- return -1;
-}
-
-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)) {
- status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
- 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:
- ACPI_EXCEPTION((AE_INFO, status, "EC leave burst mode"));
- return -1;
-}
-#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)
@@ -308,6 +257,21 @@ static int acpi_ec_transaction(struct ac
return status;
}
+/*
+ * Note: samsung nv5000 doesn't work with ec burst mode.
+ * http://bugzilla.kernel.org/show_bug.cgi?id=4980
+ */
+int acpi_ec_burst_enable(struct acpi_ec *ec)
+{
+ u8 d;
+ return acpi_ec_transaction(ec, ACPI_EC_BURST_ENABLE, NULL, 0, &d, 1);
+}
+
+int acpi_ec_burst_disable(struct acpi_ec *ec)
+{
+ return acpi_ec_transaction(ec, ACPI_EC_BURST_DISABLE, NULL, 0, NULL, 0);
+}
+
static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 * data)
{
int result;
@@ -329,6 +293,28 @@ static int acpi_ec_write(struct acpi_ec
/*
* Externally callable EC access functions. For now, assume 1 EC only
*/
+int ec_burst_enable(void)
+{
+ struct acpi_ec *ec;
+ if (!first_ec)
+ return -ENODEV;
+ ec = acpi_driver_data(first_ec);
+ return acpi_ec_burst_enable(ec);
+}
+
+EXPORT_SYMBOL(ec_burst_enable);
+
+int ec_burst_disable(void)
+{
+ struct acpi_ec *ec;
+ if (!first_ec)
+ return -ENODEV;
+ ec = acpi_driver_data(first_ec);
+ return acpi_ec_burst_disable(ec);
+}
+
+EXPORT_SYMBOL(ec_burst_disable);
+
int ec_read(u8 addr, u8 * val)
{
struct acpi_ec *ec;
@@ -369,8 +355,8 @@ int ec_write(u8 addr, u8 val)
EXPORT_SYMBOL(ec_write);
int ec_transaction(u8 command,
- const u8 * wdata, unsigned wdata_len,
- u8 * rdata, unsigned rdata_len)
+ const u8 * wdata, unsigned wdata_len,
+ u8 * rdata, unsigned rdata_len)
{
struct acpi_ec *ec;
@@ -634,7 +620,6 @@ static int acpi_ec_add(struct acpi_devic
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);
}
strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
@@ -936,8 +921,7 @@ static int __init acpi_ec_set_intr_mode(
acpi_ec_mode = EC_POLL;
}
acpi_ec_driver.ops.add = acpi_ec_add;
- printk(KERN_NOTICE PREFIX "%s mode.\n",
- intr ? "interrupt" : "polling");
+ printk(KERN_NOTICE PREFIX "%s mode.\n", intr ? "interrupt" : "polling");
return 1;
}
>From nobody Thu Mar 1 01:31:39 2007
Subject: [PATCH 4/9] ACPI: EC: Remove casts to/from void* from ec.c
To: Alexey Starikovskiy <[EMAIL PROTECTED]>
Date: Thu, 01 Mar 2007 01:31:39 +0300
Message-ID: <[EMAIL PROTECTED]>
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
User-Agent: StGIT/0.11
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
---
drivers/acpi/ec.c | 12 +++++-------
1 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 816caec..7f50ea1 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -402,7 +402,7 @@ static int acpi_ec_query(struct acpi_ec
static void acpi_ec_gpe_query(void *ec_cxt)
{
- struct acpi_ec *ec = (struct acpi_ec *)ec_cxt;
+ struct acpi_ec *ec = ec_cxt;
u8 value = 0;
char object_name[8];
@@ -420,7 +420,7 @@ static u32 acpi_ec_gpe_handler(void *dat
{
acpi_status status = AE_OK;
u8 value;
- struct acpi_ec *ec = (struct acpi_ec *)data;
+ struct acpi_ec *ec = data;
if (acpi_ec_mode == EC_INTR) {
wake_up(&ec->wait);
@@ -464,7 +464,7 @@ acpi_ec_space_handler(u32 function,
void *handler_context, void *region_context)
{
int result = 0;
- struct acpi_ec *ec = NULL;
+ struct acpi_ec *ec = handler_context;
u64 temp = *value;
acpi_integer f_v = 0;
int i = 0;
@@ -476,8 +476,6 @@ acpi_ec_space_handler(u32 function,
return AE_BAD_PARAMETER;
}
- ec = (struct acpi_ec *)handler_context;
-
next_byte:
switch (function) {
case ACPI_READ:
@@ -533,7 +531,7 @@ static struct proc_dir_entry *acpi_ec_di
static int acpi_ec_read_info(struct seq_file *seq, void *offset)
{
- struct acpi_ec *ec = (struct acpi_ec *)seq->private;
+ struct acpi_ec *ec = seq->private;
if (!ec)
goto end;
@@ -689,7 +687,7 @@ static int acpi_ec_remove(struct acpi_de
static acpi_status
acpi_ec_io_ports(struct acpi_resource *resource, void *context)
{
- struct acpi_ec *ec = (struct acpi_ec *)context;
+ struct acpi_ec *ec = context;
if (resource->type != ACPI_RESOURCE_TYPE_IO) {
return AE_OK;
>From nobody Thu Mar 1 01:31:40 2007
Subject: [PATCH 5/9] ACPI: EC: Put install handlers into separate function.
To: Alexey Starikovskiy <[EMAIL PROTECTED]>
Date: Thu, 01 Mar 2007 01:31:40 +0300
Message-ID: <[EMAIL PROTECTED]>
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
User-Agent: StGIT/0.11
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
---
drivers/acpi/ec.c | 87 ++++++++++++++++-------------------------------------
1 files changed, 27 insertions(+), 60 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 7f50ea1..5147caa 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -709,6 +709,28 @@ acpi_ec_io_ports(struct acpi_resource *r
return AE_OK;
}
+static int ec_install_handlers(struct acpi_ec *ec)
+{
+ acpi_status 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, 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, &acpi_ec_gpe_handler);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
static int acpi_ec_start(struct acpi_device *device)
{
acpi_status status = AE_OK;
@@ -736,28 +758,7 @@ static int acpi_ec_start(struct acpi_dev
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02lx, ports=0x%2lx,0x%2lx",
ec->gpe, ec->command_addr, ec->data_addr));
- /*
- * Install GPE handler
- */
- 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, 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, &acpi_ec_gpe_handler);
- return -ENODEV;
- }
-
- return AE_OK;
+ return ec_install_handlers(ec);
}
static int acpi_ec_stop(struct acpi_device *device, int type)
@@ -813,23 +814,12 @@ static int __init acpi_ec_get_real_ecdt(
ec_ecdt->global_lock = TRUE;
ec_ecdt->uid = ecdt_ptr->uid;
- status = acpi_get_handle(NULL, ecdt_ptr->id, &ec_ecdt->handle);
- if (ACPI_FAILURE(status)) {
- goto error;
- }
-
+ ec_ecdt->handle = ACPI_ROOT_OBJECT;
return 0;
- error:
- ACPI_EXCEPTION((AE_INFO, status, "Could not use ECDT"));
- kfree(ec_ecdt);
- ec_ecdt = NULL;
-
- return -ENODEV;
}
int __init acpi_ec_ecdt_probe(void)
{
- acpi_status status;
int ret;
ret = acpi_ec_get_real_ecdt();
@@ -837,33 +827,10 @@ int __init acpi_ec_ecdt_probe(void)
if (ret)
return 0;
- /*
- * Install GPE handler
- */
- 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, 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,
- &acpi_ec_space_handler,
- &acpi_ec_space_setup,
- ec_ecdt);
- if (ACPI_FAILURE(status)) {
- acpi_remove_gpe_handler(NULL, ec_ecdt->gpe,
- &acpi_ec_gpe_handler);
- goto error;
- }
-
- return 0;
+ ret = ec_install_handlers(ec_ecdt);
+ if (!ret)
+ return 0;
- error:
- ACPI_EXCEPTION((AE_INFO, status, "Could not use ECDT"));
kfree(ec_ecdt);
ec_ecdt = NULL;
>From nobody Thu Mar 1 01:31:40 2007
Subject: [PATCH 6/9] ACPI: EC: Clean ECDT and namespace parsing.
To: Alexey Starikovskiy <[EMAIL PROTECTED]>
Date: Thu, 01 Mar 2007 01:31:40 +0300
Message-ID: <[EMAIL PROTECTED]>
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
User-Agent: StGIT/0.11
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
---
drivers/acpi/ec.c | 203 ++++++++++++++++++++++++++++-------------------------
1 files changed, 108 insertions(+), 95 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 5147caa..c6dec3d 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -599,73 +599,72 @@ static int acpi_ec_remove_fs(struct acpi
/* --------------------------------------------------------------------------
Driver Interface
--------------------------------------------------------------------------
*/
+static acpi_status
+ec_parse_io_ports(struct acpi_resource *resource, void *context);
+
+static acpi_status
+ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval);
+
+static struct acpi_ec *make_acpi_ec(void)
+{
+ struct acpi_ec *ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
+ if (!ec)
+ return NULL;
+
+ atomic_set(&ec->query_pending, 0);
+ mutex_init(&ec->lock);
+ init_waitqueue_head(&ec->wait);
+
+ return ec;
+}
static int acpi_ec_add(struct acpi_device *device)
{
- int result = 0;
acpi_status status = AE_OK;
struct acpi_ec *ec = NULL;
if (!device)
return -EINVAL;
- ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
+ strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
+ strcpy(acpi_device_class(device), ACPI_EC_CLASS);
+
+ ec = make_acpi_ec();
if (!ec)
return -ENOMEM;
- ec->handle = device->handle;
- ec->uid = -1;
- mutex_init(&ec->lock);
- atomic_set(&ec->query_pending, 0);
- if (acpi_ec_mode == EC_INTR) {
- init_waitqueue_head(&ec->wait);
+ status = ec_parse_device(device->handle, 0, ec, NULL);
+ if (status != AE_CTRL_TERMINATE) {
+ kfree(ec);
+ return -EINVAL;
}
- strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
- strcpy(acpi_device_class(device), ACPI_EC_CLASS);
- acpi_driver_data(device) = ec;
-
- /* Use the global lock for all EC transactions? */
- 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 */
+ /* Check if we found the boot EC */
if (ec_ecdt) {
- acpi_remove_address_space_handler(ACPI_ROOT_OBJECT,
- ACPI_ADR_SPACE_EC,
- &acpi_ec_space_handler);
+ if (ec_ecdt->gpe == ec->gpe) {
+ /* We might have incorrect info for GL at boot time */
+ mutex_lock(&ec_ecdt->lock);
+ ec_ecdt->global_lock = ec->global_lock;
+ mutex_unlock(&ec_ecdt->lock);
+ kfree(ec);
+ ec = ec_ecdt;
+ }
+ }
- acpi_remove_gpe_handler(NULL, ec_ecdt->gpe,
- &acpi_ec_gpe_handler);
+ ec->handle = device->handle;
- kfree(ec_ecdt);
- }
+ acpi_driver_data(device) = ec;
- /* Get GPE bit assignment (EC events). */
- /* TODO: Add support for _GPE returning a package */
- status = acpi_evaluate_integer(ec->handle, "_GPE", NULL, &ec->gpe);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Obtaining GPE bit assignment"));
- result = -ENODEV;
- goto end;
- }
+ if (!first_ec)
+ first_ec = device;
- result = acpi_ec_add_fs(device);
- if (result)
- goto end;
+ acpi_ec_add_fs(device);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s [%s] (gpe %d) interrupt mode.",
acpi_device_name(device), acpi_device_bid(device),
(u32) ec->gpe));
- if (!first_ec)
- first_ec = device;
-
- end:
- if (result)
- kfree(ec);
-
- return result;
+ return 0;
}
static int acpi_ec_remove(struct acpi_device *device, int type)
@@ -679,13 +678,19 @@ static int acpi_ec_remove(struct acpi_de
acpi_ec_remove_fs(device);
- kfree(ec);
+ acpi_driver_data(device) = NULL;
+ if (device == first_ec)
+ first_ec = NULL;
+
+ /* Don't touch boot EC */
+ if (ec_ecdt != ec)
+ kfree(ec);
return 0;
}
static acpi_status
-acpi_ec_io_ports(struct acpi_resource *resource, void *context)
+ec_parse_io_ports(struct acpi_resource *resource, void *context)
{
struct acpi_ec *ec = context;
@@ -711,9 +716,10 @@ acpi_ec_io_ports(struct acpi_resource *r
static int ec_install_handlers(struct acpi_ec *ec)
{
- acpi_status status = acpi_install_gpe_handler(NULL, ec->gpe,
- ACPI_GPE_EDGE_TRIGGERED,
- &acpi_ec_gpe_handler, ec);
+ acpi_status status;
+ 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, ACPI_GPE_TYPE_RUNTIME);
@@ -733,8 +739,7 @@ static int ec_install_handlers(struct ac
static int acpi_ec_start(struct acpi_device *device)
{
- acpi_status status = AE_OK;
- struct acpi_ec *ec = NULL;
+ struct acpi_ec *ec;
if (!device)
return -EINVAL;
@@ -744,32 +749,31 @@ static int acpi_ec_start(struct acpi_dev
if (!ec)
return -EINVAL;
- /*
- * Get I/O port addresses. Convert to GAS format.
- */
- status = acpi_walk_resources(ec->handle, METHOD_NAME__CRS,
- acpi_ec_io_ports, ec);
- if (ACPI_FAILURE(status) || ec->command_addr == 0) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Error getting I/O port addresses"));
- return -ENODEV;
- }
-
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02lx, ports=0x%2lx,0x%2lx",
ec->gpe, ec->command_addr, ec->data_addr));
+ /* Boot EC is already working */
+ if (ec == ec_ecdt)
+ return 0;
+
return ec_install_handlers(ec);
}
static int acpi_ec_stop(struct acpi_device *device, int type)
{
- acpi_status status = AE_OK;
- struct acpi_ec *ec = NULL;
+ acpi_status status;
+ struct acpi_ec *ec;
if (!device)
return -EINVAL;
ec = acpi_driver_data(device);
+ if (!ec)
+ return -EINVAL;
+
+ /* Don't touch boot EC */
+ if (ec == ec_ecdt)
+ return 0;
status = acpi_remove_address_space_handler(ec->handle,
ACPI_ADR_SPACE_EC,
@@ -784,53 +788,66 @@ static int acpi_ec_stop(struct acpi_devi
return 0;
}
-static int __init acpi_ec_get_real_ecdt(void)
+static acpi_status
+ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
+{
+ acpi_status status;
+
+ struct acpi_ec *ec = context;
+ status = acpi_walk_resources(handle, METHOD_NAME__CRS,
+ ec_parse_io_ports, ec);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ /* Get GPE bit assignment (EC events). */
+ /* TODO: Add support for _GPE returning a package */
+ status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec->gpe);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ /* Use the global lock for all EC transactions? */
+ acpi_evaluate_integer(handle, "_GLK", NULL, &ec->global_lock);
+
+ ec->handle = handle;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "GPE=0x%02lx, ports=0x%2lx, 0x%2lx",
+ ec->gpe, ec->command_addr, ec->data_addr));
+
+ return AE_CTRL_TERMINATE;
+}
+
+int __init acpi_ec_ecdt_probe(void)
{
+ int ret;
acpi_status status;
struct acpi_table_ecdt *ecdt_ptr;
+ ec_ecdt = make_acpi_ec();
+ if (!ec_ecdt)
+ return -ENOMEM;
+ /*
+ * Generate a boot ec context
+ */
+
status = acpi_get_table(ACPI_SIG_ECDT, 1,
(struct acpi_table_header **)&ecdt_ptr);
if (ACPI_FAILURE(status))
- return -ENODEV;
+ goto error;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found ECDT"));
- /*
- * Generate a temporary ec context to use until the namespace is scanned
- */
- ec_ecdt = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
- if (!ec_ecdt)
- return -ENOMEM;
-
- mutex_init(&ec_ecdt->lock);
- if (acpi_ec_mode == EC_INTR) {
- init_waitqueue_head(&ec_ecdt->wait);
- }
ec_ecdt->command_addr = ecdt_ptr->control.address;
ec_ecdt->data_addr = ecdt_ptr->data.address;
ec_ecdt->gpe = ecdt_ptr->gpe;
/* use the GL just to be safe */
ec_ecdt->global_lock = TRUE;
ec_ecdt->uid = ecdt_ptr->uid;
-
ec_ecdt->handle = ACPI_ROOT_OBJECT;
- return 0;
-}
-
-int __init acpi_ec_ecdt_probe(void)
-{
- int ret;
-
- ret = acpi_ec_get_real_ecdt();
-
- if (ret)
- return 0;
ret = ec_install_handlers(ec_ecdt);
if (!ret)
return 0;
-
+ error:
kfree(ec_ecdt);
ec_ecdt = NULL;
@@ -880,12 +897,8 @@ static int __init acpi_ec_set_intr_mode(
if (!get_option(&str, &intr))
return 0;
- if (intr) {
- acpi_ec_mode = EC_INTR;
- } else {
- acpi_ec_mode = EC_POLL;
- }
- acpi_ec_driver.ops.add = acpi_ec_add;
+ acpi_ec_mode = (intr) ? EC_INTR : EC_POLL;
+
printk(KERN_NOTICE PREFIX "%s mode.\n", intr ? "interrupt" : "polling");
return 1;
>From nobody Thu Mar 1 01:31:40 2007
Subject: [PATCH 7/9] ACPI: EC: Rename ec_ecdt to more informative boot_ec
To: Alexey Starikovskiy <[EMAIL PROTECTED]>
Date: Thu, 01 Mar 2007 01:31:40 +0300
Message-ID: <[EMAIL PROTECTED]>
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
User-Agent: StGIT/0.11
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
---
drivers/acpi/ec.c | 45 +++++++++++++++++++++------------------------
1 files changed, 21 insertions(+), 24 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index c6dec3d..9ca87b6 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -101,7 +101,7 @@ static struct acpi_ec {
struct mutex lock;
atomic_t query_pending;
wait_queue_head_t wait;
-} *ec_ecdt;
+} *boot_ec;
/* External interfaces use first EC only, so remember */
static struct acpi_device *first_ec;
@@ -640,21 +640,18 @@ static int acpi_ec_add(struct acpi_devic
}
/* Check if we found the boot EC */
- if (ec_ecdt) {
- if (ec_ecdt->gpe == ec->gpe) {
+ if (boot_ec) {
+ if (boot_ec->gpe == ec->gpe) {
/* We might have incorrect info for GL at boot time */
- mutex_lock(&ec_ecdt->lock);
- ec_ecdt->global_lock = ec->global_lock;
- mutex_unlock(&ec_ecdt->lock);
+ mutex_lock(&boot_ec->lock);
+ boot_ec->global_lock = ec->global_lock;
+ mutex_unlock(&boot_ec->lock);
kfree(ec);
- ec = ec_ecdt;
+ ec = boot_ec;
}
}
-
ec->handle = device->handle;
-
acpi_driver_data(device) = ec;
-
if (!first_ec)
first_ec = device;
@@ -683,7 +680,7 @@ static int acpi_ec_remove(struct acpi_de
first_ec = NULL;
/* Don't touch boot EC */
- if (ec_ecdt != ec)
+ if (boot_ec != ec)
kfree(ec);
return 0;
@@ -753,7 +750,7 @@ static int acpi_ec_start(struct acpi_dev
ec->gpe, ec->command_addr, ec->data_addr));
/* Boot EC is already working */
- if (ec == ec_ecdt)
+ if (ec == boot_ec)
return 0;
return ec_install_handlers(ec);
@@ -772,7 +769,7 @@ static int acpi_ec_stop(struct acpi_devi
return -EINVAL;
/* Don't touch boot EC */
- if (ec == ec_ecdt)
+ if (ec == boot_ec)
return 0;
status = acpi_remove_address_space_handler(ec->handle,
@@ -822,8 +819,8 @@ int __init acpi_ec_ecdt_probe(void)
acpi_status status;
struct acpi_table_ecdt *ecdt_ptr;
- ec_ecdt = make_acpi_ec();
- if (!ec_ecdt)
+ boot_ec = make_acpi_ec();
+ if (!boot_ec)
return -ENOMEM;
/*
* Generate a boot ec context
@@ -836,20 +833,20 @@ int __init acpi_ec_ecdt_probe(void)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found ECDT"));
- ec_ecdt->command_addr = ecdt_ptr->control.address;
- ec_ecdt->data_addr = ecdt_ptr->data.address;
- ec_ecdt->gpe = ecdt_ptr->gpe;
+ boot_ec->command_addr = ecdt_ptr->control.address;
+ boot_ec->data_addr = ecdt_ptr->data.address;
+ boot_ec->gpe = ecdt_ptr->gpe;
/* use the GL just to be safe */
- ec_ecdt->global_lock = TRUE;
- ec_ecdt->uid = ecdt_ptr->uid;
- ec_ecdt->handle = ACPI_ROOT_OBJECT;
+ boot_ec->global_lock = TRUE;
+ boot_ec->uid = ecdt_ptr->uid;
+ boot_ec->handle = ACPI_ROOT_OBJECT;
- ret = ec_install_handlers(ec_ecdt);
+ ret = ec_install_handlers(boot_ec);
if (!ret)
return 0;
error:
- kfree(ec_ecdt);
- ec_ecdt = NULL;
+ kfree(boot_ec);
+ boot_ec = NULL;
return -ENODEV;
}
>From nobody Thu Mar 1 01:31:40 2007
Subject: [PATCH 8/9] ACPI: EC: first_ec is better to be acpi_ec than
acpi_device.
To: Alexey Starikovskiy <[EMAIL PROTECTED]>
Date: Thu, 01 Mar 2007 01:31:40 +0300
Message-ID: <[EMAIL PROTECTED]>
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
User-Agent: StGIT/0.11
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
---
drivers/acpi/ec.c | 41 +++++++++++++----------------------------
1 files changed, 13 insertions(+), 28 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 9ca87b6..fbfb256 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -91,6 +91,7 @@ static struct acpi_driver acpi_ec_driver
};
/* If we find an EC via the ECDT, we need to keep a ptr to its context */
+/* External interfaces use first EC only, so remember */
static struct acpi_ec {
acpi_handle handle;
unsigned long uid;
@@ -101,10 +102,7 @@ static struct acpi_ec {
struct mutex lock;
atomic_t query_pending;
wait_queue_head_t wait;
-} *boot_ec;
-
-/* External interfaces use first EC only, so remember */
-static struct acpi_device *first_ec;
+} *boot_ec, *first_ec;
/* --------------------------------------------------------------------------
Transaction Management
@@ -295,38 +293,31 @@ static int acpi_ec_write(struct acpi_ec
*/
int ec_burst_enable(void)
{
- struct acpi_ec *ec;
if (!first_ec)
return -ENODEV;
- ec = acpi_driver_data(first_ec);
- return acpi_ec_burst_enable(ec);
+ return acpi_ec_burst_enable(first_ec);
}
EXPORT_SYMBOL(ec_burst_enable);
int ec_burst_disable(void)
{
- struct acpi_ec *ec;
if (!first_ec)
return -ENODEV;
- ec = acpi_driver_data(first_ec);
- return acpi_ec_burst_disable(ec);
+ return acpi_ec_burst_disable(first_ec);
}
EXPORT_SYMBOL(ec_burst_disable);
int ec_read(u8 addr, u8 * val)
{
- struct acpi_ec *ec;
int err;
u8 temp_data;
if (!first_ec)
return -ENODEV;
- ec = acpi_driver_data(first_ec);
-
- err = acpi_ec_read(ec, addr, &temp_data);
+ err = acpi_ec_read(first_ec, addr, &temp_data);
if (!err) {
*val = temp_data;
@@ -339,15 +330,12 @@ EXPORT_SYMBOL(ec_read);
int ec_write(u8 addr, u8 val)
{
- struct acpi_ec *ec;
int err;
if (!first_ec)
return -ENODEV;
- ec = acpi_driver_data(first_ec);
-
- err = acpi_ec_write(ec, addr, val);
+ err = acpi_ec_write(first_ec, addr, val);
return err;
}
@@ -358,14 +346,10 @@ int ec_transaction(u8 command,
const u8 * wdata, unsigned wdata_len,
u8 * rdata, unsigned rdata_len)
{
- struct acpi_ec *ec;
-
if (!first_ec)
return -ENODEV;
- ec = acpi_driver_data(first_ec);
-
- return acpi_ec_transaction(ec, command, wdata,
+ return acpi_ec_transaction(first_ec, command, wdata,
wdata_len, rdata, rdata_len);
}
@@ -649,11 +633,10 @@ static int acpi_ec_add(struct acpi_devic
kfree(ec);
ec = boot_ec;
}
- }
+ } else
+ first_ec = ec;
ec->handle = device->handle;
acpi_driver_data(device) = ec;
- if (!first_ec)
- first_ec = device;
acpi_ec_add_fs(device);
@@ -676,7 +659,7 @@ static int acpi_ec_remove(struct acpi_de
acpi_ec_remove_fs(device);
acpi_driver_data(device) = NULL;
- if (device == first_ec)
+ if (ec == first_ec)
first_ec = NULL;
/* Don't touch boot EC */
@@ -842,8 +825,10 @@ int __init acpi_ec_ecdt_probe(void)
boot_ec->handle = ACPI_ROOT_OBJECT;
ret = ec_install_handlers(boot_ec);
- if (!ret)
+ if (!ret) {
+ first_ec = boot_ec;
return 0;
+ }
error:
kfree(boot_ec);
boot_ec = NULL;
>From nobody Thu Mar 1 01:31:41 2007
Subject: [PATCH 9/9] ACPI: EC: Cleanup of EC initialization
To: Alexey Starikovskiy <[EMAIL PROTECTED]>
Date: Thu, 01 Mar 2007 01:31:41 +0300
Message-ID: <[EMAIL PROTECTED]>
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
User-Agent: StGIT/0.11
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
---
drivers/acpi/ec.c | 32 +++++++++++++-------------------
1 files changed, 13 insertions(+), 19 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index fbfb256..fce38fe 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1,6 +1,8 @@
/*
- * acpi_ec.c - ACPI Embedded Controller Driver ($Revision: 38 $)
+ * ec.c - ACPI Embedded Controller Driver (v2.0)
*
+ * Copyright (C) 2006, 2007 Alexey Starikovskiy <[EMAIL PROTECTED]>
+ * Copyright (C) 2006 Denis Sadykov <[EMAIL PROTECTED]>
* Copyright (C) 2004 Luming Yu <[EMAIL PROTECTED]>
* Copyright (C) 2001, 2002 Andy Grover <[EMAIL PROTECTED]>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <[EMAIL PROTECTED]>
@@ -94,7 +96,6 @@ static struct acpi_driver acpi_ec_driver
/* External interfaces use first EC only, so remember */
static struct acpi_ec {
acpi_handle handle;
- unsigned long uid;
unsigned long gpe;
unsigned long command_addr;
unsigned long data_addr;
@@ -520,13 +521,11 @@ static int acpi_ec_read_info(struct seq_
if (!ec)
goto end;
- 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);
- seq_printf(seq, "use global lock: %s\n",
+ seq_printf(seq, "gpe:\t\t\t0x%02x\n", (u32) ec->gpe);
+ seq_printf(seq, "ports:\t\t\t0x%02x, 0x%02x\n",
+ (unsigned)ec->command_addr, (unsigned)ec->data_addr);
+ seq_printf(seq, "use global lock:\t%s\n",
ec->global_lock ? "yes" : "no");
- acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
-
end:
return 0;
}
@@ -649,15 +648,13 @@ static int acpi_ec_add(struct acpi_devic
static int acpi_ec_remove(struct acpi_device *device, int type)
{
- struct acpi_ec *ec = NULL;
+ struct acpi_ec *ec;
if (!device)
return -EINVAL;
ec = acpi_driver_data(device);
-
acpi_ec_remove_fs(device);
-
acpi_driver_data(device) = NULL;
if (ec == first_ec)
first_ec = NULL;
@@ -665,7 +662,6 @@ static int acpi_ec_remove(struct acpi_de
/* Don't touch boot EC */
if (boot_ec != ec)
kfree(ec);
-
return 0;
}
@@ -674,22 +670,20 @@ ec_parse_io_ports(struct acpi_resource *
{
struct acpi_ec *ec = context;
- if (resource->type != ACPI_RESOURCE_TYPE_IO) {
+ if (resource->type != ACPI_RESOURCE_TYPE_IO)
return AE_OK;
- }
/*
* The first address region returned is the data port, and
* the second address region returned is the status/command
* port.
*/
- if (ec->data_addr == 0) {
+ if (ec->data_addr == 0)
ec->data_addr = resource->data.io.minimum;
- } else if (ec->command_addr == 0) {
+ else if (ec->command_addr == 0)
ec->command_addr = resource->data.io.minimum;
- } else {
+ else
return AE_CTRL_TERMINATE;
- }
return AE_OK;
}
@@ -702,6 +696,7 @@ static int ec_install_handlers(struct ac
&acpi_ec_gpe_handler, ec);
if (ACPI_FAILURE(status))
return -ENODEV;
+
acpi_set_gpe_type(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
@@ -821,7 +816,6 @@ int __init acpi_ec_ecdt_probe(void)
boot_ec->gpe = ecdt_ptr->gpe;
/* use the GL just to be safe */
boot_ec->global_lock = TRUE;
- boot_ec->uid = ecdt_ptr->uid;
boot_ec->handle = ACPI_ROOT_OBJECT;
ret = ec_install_handlers(boot_ec);
