patch-2.4.22 linux-2.4.22/drivers/acpi/ospm/ec/ectransx.c
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- Lines: 344
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.21/drivers/acpi/ospm/ec/ectransx.c
- Orig date:
2002-11-28 15:53:12.000000000 -0800
diff -urN linux-2.4.21/drivers/acpi/ospm/ec/ectransx.c linux-2.4.22/drivers/acpi/ospm/ec/ectransx.c
@@ -1,343 +0,0 @@
-/*****************************************************************************
- *
- * Module Name: ectransx.c
- * $Revision: 24 $
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000, 2001 Andrew Grover
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-#include <acpi.h>
-#include "ec.h"
-
-#define _COMPONENT ACPI_EC
- MODULE_NAME ("ectransx")
-
-
-/****************************************************************************
- *
- * FUNCTION: ec_io_wait
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-ec_io_wait (
- EC_CONTEXT *ec,
- EC_EVENT wait_event)
-{
- EC_STATUS ec_status = 0;
- u32 i = 100;
-
- if (!ec || ((wait_event != EC_EVENT_OUTPUT_BUFFER_FULL)
- && (wait_event != EC_EVENT_INPUT_BUFFER_EMPTY))) {
- return(AE_BAD_PARAMETER);
- }
-
- /*
- * Wait for Event:
- * ---------------
- * Poll the EC status register waiting for the event to occur.
- * Note that we'll wait a maximum of 1ms in 10us chunks.
- */
- switch (wait_event) {
-
- case EC_EVENT_OUTPUT_BUFFER_FULL:
- do {
- acpi_os_read_port(ec->status_port, &ec_status, 8);
- if (ec_status & EC_FLAG_OUTPUT_BUFFER) {
- return(AE_OK);
- }
- acpi_os_stall(10);
- } while (--i>0);
- break;
-
- case EC_EVENT_INPUT_BUFFER_EMPTY:
- do {
- acpi_os_read_port(ec->status_port, &ec_status, 8);
- if (!(ec_status & EC_FLAG_INPUT_BUFFER)) {
- return(AE_OK);
- }
- acpi_os_stall(10);
- } while (--i>0);
- break;
- }
-
- return(AE_TIME);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: ec_io_read
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-ec_io_read (
- EC_CONTEXT *ec,
- u32 io_port,
- u8 *data,
- EC_EVENT wait_event)
-{
- acpi_status status = AE_OK;
-
- if (!ec || !data) {
- return(AE_BAD_PARAMETER);
- }
-
- acpi_os_read_port(io_port, (u32*) data, 8);
-
- if (wait_event) {
- status = ec_io_wait(ec, wait_event);
- }
-
- return(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: ec_io_write
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-ec_io_write (
- EC_CONTEXT *ec,
- u32 io_port,
- u8 data,
- EC_EVENT wait_event)
-{
- acpi_status status = AE_OK;
-
- if (!ec) {
- return(AE_BAD_PARAMETER);
- }
-
- acpi_os_write_port(io_port, data, 8);
-
- if (wait_event) {
- status = ec_io_wait(ec, wait_event);
- }
-
- return(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: ec_read
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-ec_read (
- EC_CONTEXT *ec,
- u8 address,
- u8 *data)
-{
- acpi_status status = AE_OK;
-
- FUNCTION_TRACE("ec_read");
-
- if (!ec || !data) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- if (ec->use_global_lock) {
- status = acpi_acquire_global_lock();
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Could not acquire Global Lock\n"));
- return_ACPI_STATUS(status);
- }
- }
-
- status = ec_io_write(ec, ec->command_port, EC_COMMAND_READ,
- EC_EVENT_INPUT_BUFFER_EMPTY);
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Unable to send 'read command' to EC.\n"));
- return_ACPI_STATUS(status);
- }
-
- status = ec_io_write(ec, ec->data_port, address,
- EC_EVENT_OUTPUT_BUFFER_FULL);
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Unable to send 'read address' to EC.\n"));
- return_ACPI_STATUS(status);
- }
-
- status = ec_io_read(ec, ec->data_port, data, EC_EVENT_NONE);
-
- if (ec->use_global_lock) {
- acpi_release_global_lock();
- }
-
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Read data [%02x] from address [%02x] on ec [%02x].\n", (*data), address, ec->device_handle));
-
- return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: ec_write
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-ec_write (
- EC_CONTEXT *ec,
- u8 address,
- u8 data)
-{
- acpi_status status = AE_OK;
-
- FUNCTION_TRACE("ec_write");
-
- if (!ec)
- return_ACPI_STATUS(AE_BAD_PARAMETER);
-
- if (ec->use_global_lock) {
- status = acpi_acquire_global_lock();
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Could not acquire Global Lock\n"));
- return_ACPI_STATUS(status);
- }
- }
-
- status = ec_io_write(ec, ec->command_port, EC_COMMAND_WRITE,
- EC_EVENT_INPUT_BUFFER_EMPTY);
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Unable to send 'write command' to EC.\n"));
- return_ACPI_STATUS(status);
- }
-
- status = ec_io_write(ec, ec->data_port, address,
- EC_EVENT_INPUT_BUFFER_EMPTY);
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Unable to send 'write address' to EC.\n"));
- return_ACPI_STATUS(status);
- }
-
- status = ec_io_write(ec, ec->data_port, data,
- EC_EVENT_INPUT_BUFFER_EMPTY);
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Unable to send 'write data' to EC.\n"));
- return_ACPI_STATUS(status);
- }
-
- if (ec->use_global_lock) {
- acpi_release_global_lock();
- }
-
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Wrote data [%02x] to address [%02x] on ec [%02x].\n", data, address, ec->device_handle));
-
- return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: ec_transaction
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-ec_transaction (
- EC_CONTEXT *ec,
- EC_REQUEST *request)
-{
- acpi_status status = AE_OK;
-
- FUNCTION_TRACE("ec_transaction");
-
- if (!ec || !request) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /*
- * Obtain mutex to serialize all EC transactions.
- */
- status = acpi_os_wait_semaphore(ec->mutex, 1, EC_DEFAULT_TIMEOUT);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /*
- * Perform the transaction.
- */
- switch (request->command) {
-
- case EC_COMMAND_READ:
- status = ec_read(ec, request->address, &(request->data));
- break;
-
- case EC_COMMAND_WRITE:
- status = ec_write(ec, request->address, request->data);
- break;
-
- default:
- status = AE_SUPPORT;
- break;
- }
-
- /*
- * Signal the mutex to indicate transaction completion.
- */
- acpi_os_signal_semaphore(ec->mutex, 1);
-
- return_ACPI_STATUS(status);
-}
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