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drm/radeon: Add support for the ATIF ACPI method to the radeon driver

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By calling the ATIF method in the radeon driver we can make sure
that hotkeys such as the video switch key emit ACPI events when
pressed.

agd5f: fix warning

Signed-off-by: Alberto Milone <alberto.milone@canonical.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alberto Milone 2010-07-06 11:40:24 -04:00 committed by Dave Airlie
parent 9bd7ef5f5a
commit d7a2952f1a
4 changed files with 82 additions and 1 deletions
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1
drivers/gpu/drm/radeon/Makefile
View File

@ -69,5 +69,6 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \
radeon-$(CONFIG_COMPAT) += radeon_ioc32.o
radeon-$(CONFIG_VGA_SWITCHEROO) += radeon_atpx_handler.o
radeon-$(CONFIG_ACPI) += radeon_acpi.o
obj-$(CONFIG_DRM_RADEON)+= radeon.o

7
drivers/gpu/drm/radeon/radeon.h
View File

@ -1414,6 +1414,13 @@ extern void r700_cp_fini(struct radeon_device *rdev);
extern void evergreen_disable_interrupt_state(struct radeon_device *rdev);
extern int evergreen_irq_set(struct radeon_device *rdev);
/* radeon_acpi.c */
#if defined(CONFIG_ACPI)
extern int radeon_acpi_init(struct radeon_device *rdev);
#else
static inline int radeon_acpi_init(struct radeon_device *rdev) { return 0; }
#endif
/* evergreen */
struct evergreen_mc_save {
u32 vga_control[6];

67
drivers/gpu/drm/radeon/radeon_acpi.c Normal file
View File

@ -0,0 +1,67 @@
#include <linux/pci.h>
#include <linux/acpi.h>
#include <linux/slab.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
#include "drmP.h"
#include "drm.h"
#include "drm_sarea.h"
#include "drm_crtc_helper.h"
#include "radeon.h"
#include <linux/vga_switcheroo.h>
/* Call the ATIF method
*
* Note: currently we discard the output
*/
static int radeon_atif_call(acpi_handle handle)
{
acpi_status status;
union acpi_object atif_arg_elements[2];
struct acpi_object_list atif_arg;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
atif_arg.count = 2;
atif_arg.pointer = &atif_arg_elements[0];
atif_arg_elements[0].type = ACPI_TYPE_INTEGER;
atif_arg_elements[0].integer.value = 0;
atif_arg_elements[1].type = ACPI_TYPE_INTEGER;
atif_arg_elements[1].integer.value = 0;
status = acpi_evaluate_object(handle, "ATIF", &atif_arg, &buffer);
/* Fail only if calling the method fails and ATIF is supported */
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
printk(KERN_INFO "failed to evaluate ATIF got %s\n", acpi_format_exception(status));
kfree(buffer.pointer);
return 1;
}
kfree(buffer.pointer);
return 0;
}
/* Call all ACPI methods here */
int radeon_acpi_init(struct radeon_device *rdev)
{
acpi_handle handle;
int ret;
/* No need to proceed if we're sure that ATIF is not supported */
if (!ASIC_IS_AVIVO(rdev) || !rdev->bios)
return 0;
/* Get the device handle */
handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
/* Call the ATIF method */
ret = radeon_atif_call(handle);
if (ret)
return ret;
return 0;
}

8
drivers/gpu/drm/radeon/radeon_kms.c
View File

@ -49,7 +49,7 @@ int radeon_driver_unload_kms(struct drm_device *dev)
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
{
struct radeon_device *rdev;
int r;
int r, acpi_status;
rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
if (rdev == NULL) {
@ -77,6 +77,12 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
goto out;
}
/* Call ACPI methods */
acpi_status = radeon_acpi_init(rdev);
if (acpi_status)
dev_err(&dev->pdev->dev, "Error during ACPI methods call\n");
/* Again modeset_init should fail only on fatal error
* otherwise it should provide enough functionalities
* for shadowfb to run