Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 444 insertions, 0 deletions

diff --git a/drivers/acpi/hardware/hwgpe.c b/drivers/acpi/hardware/hwgpe.c
new file mode 100644
index 000000000000..9ac1d639bf51
--- /dev/null
+++ b/drivers/acpi/hardware/hwgpe.c
@@ -0,0 +1,444 @@
+
+/******************************************************************************
+ *
+ * Module Name: hwgpe - Low level GPE enable/disable/clear functions
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include <acpi/acevents.h>
+
+#define _COMPONENT          ACPI_HARDWARE
+         ACPI_MODULE_NAME    ("hwgpe")
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_write_gpe_enable_reg
+ *
+ * PARAMETERS:  gpe_event_info      - Info block for the GPE to be enabled
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Write a GPE enable register.  Note: The bit for this GPE must
+ *              already be cleared or set in the parent register
+ *              enable_for_run mask.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_hw_write_gpe_enable_reg (
+        struct acpi_gpe_event_info      *gpe_event_info)
+{
+        struct acpi_gpe_register_info   *gpe_register_info;
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_ENTRY ();
+
+
+        /* Get the info block for the entire GPE register */
+
+        gpe_register_info = gpe_event_info->register_info;
+        if (!gpe_register_info) {
+                return (AE_NOT_EXIST);
+        }
+
+        /* Write the entire GPE (runtime) enable register */
+
+        status = acpi_hw_low_level_write (8, gpe_register_info->enable_for_run,
+                          &gpe_register_info->enable_address);
+
+        return (status);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_clear_gpe
+ *
+ * PARAMETERS:  gpe_event_info      - Info block for the GPE to be cleared
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Clear the status bit for a single GPE.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_hw_clear_gpe (
+        struct acpi_gpe_event_info      *gpe_event_info)
+{
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_ENTRY ();
+
+
+        /*
+         * Write a one to the appropriate bit in the status register to
+         * clear this GPE.
+         */
+        status = acpi_hw_low_level_write (8, gpe_event_info->register_bit,
+                          &gpe_event_info->register_info->status_address);
+
+        return (status);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_get_gpe_status
+ *
+ * PARAMETERS:  gpe_event_info      - Info block for the GPE to queried
+ *              event_status        - Where the GPE status is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Return the status of a single GPE.
+ *
+ ******************************************************************************/
+#ifdef ACPI_FUTURE_USAGE
+acpi_status
+acpi_hw_get_gpe_status (
+        struct acpi_gpe_event_info      *gpe_event_info,
+        acpi_event_status               *event_status)
+{
+        u32                             in_byte;
+        u8                              register_bit;
+        struct acpi_gpe_register_info   *gpe_register_info;
+        acpi_status                     status;
+        acpi_event_status               local_event_status = 0;
+
+
+        ACPI_FUNCTION_ENTRY ();
+
+
+        if (!event_status) {
+                return (AE_BAD_PARAMETER);
+        }
+
+        /* Get the info block for the entire GPE register */
+
+        gpe_register_info = gpe_event_info->register_info;
+
+        /* Get the register bitmask for this GPE */
+
+        register_bit = gpe_event_info->register_bit;
+
+        /* GPE currently enabled? (enabled for runtime?) */
+
+        if (register_bit & gpe_register_info->enable_for_run) {
+                local_event_status |= ACPI_EVENT_FLAG_ENABLED;
+        }
+
+        /* GPE enabled for wake? */
+
+        if (register_bit & gpe_register_info->enable_for_wake) {
+                local_event_status |= ACPI_EVENT_FLAG_WAKE_ENABLED;
+        }
+
+        /* GPE currently active (status bit == 1)? */
+
+        status = acpi_hw_low_level_read (8, &in_byte, &gpe_register_info->status_address);
+        if (ACPI_FAILURE (status)) {
+                goto unlock_and_exit;
+        }
+
+        if (register_bit & in_byte) {
+                local_event_status |= ACPI_EVENT_FLAG_SET;
+        }
+
+        /* Set return value */
+
+        (*event_status) = local_event_status;
+
+
+unlock_and_exit:
+        return (status);
+}
+#endif  /*  ACPI_FUTURE_USAGE  */
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_disable_gpe_block
+ *
+ * PARAMETERS:  gpe_xrupt_info      - GPE Interrupt info
+ *              gpe_block           - Gpe Block info
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Disable all GPEs within a GPE block
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_hw_disable_gpe_block (
+        struct acpi_gpe_xrupt_info      *gpe_xrupt_info,
+        struct acpi_gpe_block_info      *gpe_block)
+{
+        u32                             i;
+        acpi_status                     status;
+
+
+        /* Examine each GPE Register within the block */
+
+        for (i = 0; i < gpe_block->register_count; i++) {
+                /* Disable all GPEs in this register */
+
+                status = acpi_hw_low_level_write (8, 0x00,
+                                 &gpe_block->register_info[i].enable_address);
+                if (ACPI_FAILURE (status)) {
+                        return (status);
+                }
+        }
+
+        return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_clear_gpe_block
+ *
+ * PARAMETERS:  gpe_xrupt_info      - GPE Interrupt info
+ *              gpe_block           - Gpe Block info
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Clear status bits for all GPEs within a GPE block
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_hw_clear_gpe_block (
+        struct acpi_gpe_xrupt_info      *gpe_xrupt_info,
+        struct acpi_gpe_block_info      *gpe_block)
+{
+        u32                             i;
+        acpi_status                     status;
+
+
+        /* Examine each GPE Register within the block */
+
+        for (i = 0; i < gpe_block->register_count; i++) {
+                /* Clear status on all GPEs in this register */
+
+                status = acpi_hw_low_level_write (8, 0xFF,
+                                 &gpe_block->register_info[i].status_address);
+                if (ACPI_FAILURE (status)) {
+                        return (status);
+                }
+        }
+
+        return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_enable_runtime_gpe_block
+ *
+ * PARAMETERS:  gpe_xrupt_info      - GPE Interrupt info
+ *              gpe_block           - Gpe Block info
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enable all "runtime" GPEs within a GPE block. (Includes
+ *              combination wake/run GPEs.)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_hw_enable_runtime_gpe_block (
+        struct acpi_gpe_xrupt_info      *gpe_xrupt_info,
+        struct acpi_gpe_block_info      *gpe_block)
+{
+        u32                             i;
+        acpi_status                     status;
+
+
+        /* NOTE: assumes that all GPEs are currently disabled */
+
+        /* Examine each GPE Register within the block */
+
+        for (i = 0; i < gpe_block->register_count; i++) {
+                if (!gpe_block->register_info[i].enable_for_run) {
+                        continue;
+                }
+
+                /* Enable all "runtime" GPEs in this register */
+
+                status = acpi_hw_low_level_write (8, gpe_block->register_info[i].enable_for_run,
+                                 &gpe_block->register_info[i].enable_address);
+                if (ACPI_FAILURE (status)) {
+                        return (status);
+                }
+        }
+
+        return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_enable_wakeup_gpe_block
+ *
+ * PARAMETERS:  gpe_xrupt_info      - GPE Interrupt info
+ *              gpe_block           - Gpe Block info
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enable all "wake" GPEs within a GPE block.  (Includes
+ *              combination wake/run GPEs.)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_hw_enable_wakeup_gpe_block (
+        struct acpi_gpe_xrupt_info      *gpe_xrupt_info,
+        struct acpi_gpe_block_info      *gpe_block)
+{
+        u32                             i;
+        acpi_status                     status;
+
+
+        /* Examine each GPE Register within the block */
+
+        for (i = 0; i < gpe_block->register_count; i++) {
+                if (!gpe_block->register_info[i].enable_for_wake) {
+                        continue;
+                }
+
+                /* Enable all "wake" GPEs in this register */
+
+                status = acpi_hw_low_level_write (8, gpe_block->register_info[i].enable_for_wake,
+                                 &gpe_block->register_info[i].enable_address);
+                if (ACPI_FAILURE (status)) {
+                        return (status);
+                }
+        }
+
+        return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_disable_all_gpes
+ *
+ * PARAMETERS:  Flags           - ACPI_NOT_ISR or ACPI_ISR
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Disable and clear all GPEs
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_hw_disable_all_gpes (
+        u32                             flags)
+{
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("hw_disable_all_gpes");
+
+
+        status = acpi_ev_walk_gpe_list (acpi_hw_disable_gpe_block, flags);
+        status = acpi_ev_walk_gpe_list (acpi_hw_clear_gpe_block, flags);
+        return_ACPI_STATUS (status);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_enable_all_runtime_gpes
+ *
+ * PARAMETERS:  Flags           - ACPI_NOT_ISR or ACPI_ISR
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enable all GPEs of the given type
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_hw_enable_all_runtime_gpes (
+        u32                             flags)
+{
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("hw_enable_all_runtime_gpes");
+
+
+        status = acpi_ev_walk_gpe_list (acpi_hw_enable_runtime_gpe_block, flags);
+        return_ACPI_STATUS (status);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_enable_all_wakeup_gpes
+ *
+ * PARAMETERS:  Flags           - ACPI_NOT_ISR or ACPI_ISR
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enable all GPEs of the given type
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_hw_enable_all_wakeup_gpes (
+        u32                             flags)
+{
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("hw_enable_all_wakeup_gpes");
+
+
+        status = acpi_ev_walk_gpe_list (acpi_hw_enable_wakeup_gpe_block, flags);
+        return_ACPI_STATUS (status);
+}
+