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c49170742d
Move it out of the radeon_pm.c and into radeon_acpi.c since we use it for more than just pm now. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
405 lines
12 KiB
C
405 lines
12 KiB
C
/*
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* Copyright 2012 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <linux/pci.h>
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#include <linux/acpi.h>
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#include <linux/slab.h>
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#include <linux/power_supply.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/video.h>
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#include "drmP.h"
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#include "drm.h"
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#include "drm_sarea.h"
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#include "drm_crtc_helper.h"
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#include "radeon.h"
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#include "radeon_acpi.h"
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#include "atom.h"
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#include <linux/vga_switcheroo.h>
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#define ACPI_AC_CLASS "ac_adapter"
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extern void radeon_pm_acpi_event_handler(struct radeon_device *rdev);
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struct atif_verify_interface {
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u16 size; /* structure size in bytes (includes size field) */
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u16 version; /* version */
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u32 notification_mask; /* supported notifications mask */
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u32 function_bits; /* supported functions bit vector */
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} __packed;
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struct atif_system_params {
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u16 size; /* structure size in bytes (includes size field) */
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u32 valid_mask; /* valid flags mask */
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u32 flags; /* flags */
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u8 command_code; /* notify command code */
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} __packed;
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struct atif_sbios_requests {
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u16 size; /* structure size in bytes (includes size field) */
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u32 pending; /* pending sbios requests */
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u8 panel_exp_mode; /* panel expansion mode */
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u8 thermal_gfx; /* thermal state: target gfx controller */
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u8 thermal_state; /* thermal state: state id (0: exit state, non-0: state) */
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u8 forced_power_gfx; /* forced power state: target gfx controller */
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u8 forced_power_state; /* forced power state: state id */
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u8 system_power_src; /* system power source */
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u8 backlight_level; /* panel backlight level (0-255) */
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} __packed;
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#define ATIF_NOTIFY_MASK 0x3
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#define ATIF_NOTIFY_NONE 0
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#define ATIF_NOTIFY_81 1
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#define ATIF_NOTIFY_N 2
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/* Call the ATIF method
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*/
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static union acpi_object *radeon_atif_call(acpi_handle handle, int function,
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struct acpi_buffer *params)
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{
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acpi_status status;
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union acpi_object atif_arg_elements[2];
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struct acpi_object_list atif_arg;
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struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
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atif_arg.count = 2;
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atif_arg.pointer = &atif_arg_elements[0];
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atif_arg_elements[0].type = ACPI_TYPE_INTEGER;
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atif_arg_elements[0].integer.value = function;
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if (params) {
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atif_arg_elements[1].type = ACPI_TYPE_BUFFER;
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atif_arg_elements[1].buffer.length = params->length;
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atif_arg_elements[1].buffer.pointer = params->pointer;
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} else {
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/* We need a second fake parameter */
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atif_arg_elements[1].type = ACPI_TYPE_INTEGER;
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atif_arg_elements[1].integer.value = 0;
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}
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status = acpi_evaluate_object(handle, "ATIF", &atif_arg, &buffer);
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/* Fail only if calling the method fails and ATIF is supported */
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if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
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DRM_DEBUG_DRIVER("failed to evaluate ATIF got %s\n",
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acpi_format_exception(status));
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kfree(buffer.pointer);
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return NULL;
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}
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return buffer.pointer;
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}
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static void radeon_atif_parse_notification(struct radeon_atif_notifications *n, u32 mask)
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{
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n->display_switch = mask & ATIF_DISPLAY_SWITCH_REQUEST_SUPPORTED;
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n->expansion_mode_change = mask & ATIF_EXPANSION_MODE_CHANGE_REQUEST_SUPPORTED;
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n->thermal_state = mask & ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED;
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n->forced_power_state = mask & ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED;
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n->system_power_state = mask & ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED;
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n->display_conf_change = mask & ATIF_DISPLAY_CONF_CHANGE_REQUEST_SUPPORTED;
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n->px_gfx_switch = mask & ATIF_PX_GFX_SWITCH_REQUEST_SUPPORTED;
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n->brightness_change = mask & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED;
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n->dgpu_display_event = mask & ATIF_DGPU_DISPLAY_EVENT_SUPPORTED;
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}
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static void radeon_atif_parse_functions(struct radeon_atif_functions *f, u32 mask)
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{
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f->system_params = mask & ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED;
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f->sbios_requests = mask & ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED;
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f->select_active_disp = mask & ATIF_SELECT_ACTIVE_DISPLAYS_SUPPORTED;
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f->lid_state = mask & ATIF_GET_LID_STATE_SUPPORTED;
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f->get_tv_standard = mask & ATIF_GET_TV_STANDARD_FROM_CMOS_SUPPORTED;
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f->set_tv_standard = mask & ATIF_SET_TV_STANDARD_IN_CMOS_SUPPORTED;
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f->get_panel_expansion_mode = mask & ATIF_GET_PANEL_EXPANSION_MODE_FROM_CMOS_SUPPORTED;
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f->set_panel_expansion_mode = mask & ATIF_SET_PANEL_EXPANSION_MODE_IN_CMOS_SUPPORTED;
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f->temperature_change = mask & ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED;
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f->graphics_device_types = mask & ATIF_GET_GRAPHICS_DEVICE_TYPES_SUPPORTED;
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}
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static int radeon_atif_verify_interface(acpi_handle handle,
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struct radeon_atif *atif)
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{
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union acpi_object *info;
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struct atif_verify_interface output;
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size_t size;
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int err = 0;
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info = radeon_atif_call(handle, ATIF_FUNCTION_VERIFY_INTERFACE, NULL);
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if (!info)
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return -EIO;
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memset(&output, 0, sizeof(output));
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size = *(u16 *) info->buffer.pointer;
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if (size < 12) {
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DRM_INFO("ATIF buffer is too small: %lu\n", size);
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err = -EINVAL;
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goto out;
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}
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size = min(sizeof(output), size);
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memcpy(&output, info->buffer.pointer, size);
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/* TODO: check version? */
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DRM_DEBUG_DRIVER("ATIF version %u\n", output.version);
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radeon_atif_parse_notification(&atif->notifications, output.notification_mask);
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radeon_atif_parse_functions(&atif->functions, output.function_bits);
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out:
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kfree(info);
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return err;
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}
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static int radeon_atif_get_notification_params(acpi_handle handle,
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struct radeon_atif_notification_cfg *n)
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{
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union acpi_object *info;
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struct atif_system_params params;
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size_t size;
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int err = 0;
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info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_PARAMETERS, NULL);
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if (!info) {
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err = -EIO;
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goto out;
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}
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size = *(u16 *) info->buffer.pointer;
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if (size < 10) {
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err = -EINVAL;
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goto out;
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}
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memset(¶ms, 0, sizeof(params));
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size = min(sizeof(params), size);
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memcpy(¶ms, info->buffer.pointer, size);
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DRM_DEBUG_DRIVER("SYSTEM_PARAMS: mask = %#x, flags = %#x\n",
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params.flags, params.valid_mask);
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params.flags = params.flags & params.valid_mask;
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if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_NONE) {
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n->enabled = false;
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n->command_code = 0;
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} else if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_81) {
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n->enabled = true;
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n->command_code = 0x81;
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} else {
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if (size < 11) {
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err = -EINVAL;
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goto out;
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}
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n->enabled = true;
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n->command_code = params.command_code;
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}
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out:
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DRM_DEBUG_DRIVER("Notification %s, command code = %#x\n",
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(n->enabled ? "enabled" : "disabled"),
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n->command_code);
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kfree(info);
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return err;
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}
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static int radeon_atif_get_sbios_requests(acpi_handle handle,
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struct atif_sbios_requests *req)
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{
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union acpi_object *info;
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size_t size;
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int count = 0;
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info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS, NULL);
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if (!info)
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return -EIO;
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size = *(u16 *)info->buffer.pointer;
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if (size < 0xd) {
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count = -EINVAL;
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goto out;
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}
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memset(req, 0, sizeof(*req));
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size = min(sizeof(*req), size);
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memcpy(req, info->buffer.pointer, size);
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DRM_DEBUG_DRIVER("SBIOS pending requests: %#x\n", req->pending);
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count = hweight32(req->pending);
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out:
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kfree(info);
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return count;
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}
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int radeon_atif_handler(struct radeon_device *rdev,
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struct acpi_bus_event *event)
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{
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struct radeon_atif *atif = &rdev->atif;
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struct atif_sbios_requests req;
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acpi_handle handle;
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int count;
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DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n",
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event->device_class, event->type);
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if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
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return NOTIFY_DONE;
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if (!atif->notification_cfg.enabled ||
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event->type != atif->notification_cfg.command_code)
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/* Not our event */
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return NOTIFY_DONE;
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/* Check pending SBIOS requests */
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handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
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count = radeon_atif_get_sbios_requests(handle, &req);
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if (count <= 0)
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return NOTIFY_DONE;
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DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count);
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if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) {
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struct radeon_encoder *enc = atif->backlight_ctl;
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if (enc) {
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struct radeon_encoder_atom_dig *dig = enc->enc_priv;
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dig->backlight_level = req.backlight_level;
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DRM_DEBUG_DRIVER("Changing brightness to %d\n",
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req.backlight_level);
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atombios_set_panel_brightness(enc);
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backlight_force_update(dig->bl_dev,
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BACKLIGHT_UPDATE_HOTKEY);
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}
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}
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/* TODO: check other events */
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return NOTIFY_OK;
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}
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static int radeon_acpi_event(struct notifier_block *nb,
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unsigned long val,
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void *data)
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{
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struct radeon_device *rdev = container_of(nb, struct radeon_device, acpi_nb);
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struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
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if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0) {
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if (power_supply_is_system_supplied() > 0)
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DRM_DEBUG_DRIVER("pm: AC\n");
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else
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DRM_DEBUG_DRIVER("pm: DC\n");
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radeon_pm_acpi_event_handler(rdev);
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}
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/* Check for pending SBIOS requests */
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return radeon_atif_handler(rdev, entry);
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}
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/* Call all ACPI methods here */
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int radeon_acpi_init(struct radeon_device *rdev)
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{
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acpi_handle handle;
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struct radeon_atif *atif = &rdev->atif;
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int ret;
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/* Get the device handle */
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handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
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/* No need to proceed if we're sure that ATIF is not supported */
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if (!ASIC_IS_AVIVO(rdev) || !rdev->bios || !handle)
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return 0;
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/* Call the ATIF method */
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ret = radeon_atif_verify_interface(handle, atif);
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if (ret) {
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DRM_DEBUG_DRIVER("Call to verify_interface failed: %d\n", ret);
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goto out;
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}
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if (atif->notifications.brightness_change) {
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struct drm_encoder *tmp;
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struct radeon_encoder *target = NULL;
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/* Find the encoder controlling the brightness */
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list_for_each_entry(tmp, &rdev->ddev->mode_config.encoder_list,
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head) {
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struct radeon_encoder *enc = to_radeon_encoder(tmp);
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struct radeon_encoder_atom_dig *dig = enc->enc_priv;
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if ((enc->devices & (ATOM_DEVICE_LCD_SUPPORT)) &&
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dig->bl_dev != NULL) {
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target = enc;
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break;
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}
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}
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atif->backlight_ctl = target;
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if (!target) {
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/* Brightness change notification is enabled, but we
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* didn't find a backlight controller, this should
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* never happen.
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*/
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DRM_ERROR("Cannot find a backlight controller\n");
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}
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}
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if (atif->functions.sbios_requests && !atif->functions.system_params) {
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/* XXX check this workraround, if sbios request function is
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* present we have to see how it's configured in the system
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* params
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*/
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atif->functions.system_params = true;
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}
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if (atif->functions.system_params) {
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ret = radeon_atif_get_notification_params(handle,
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&atif->notification_cfg);
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if (ret) {
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DRM_DEBUG_DRIVER("Call to GET_SYSTEM_PARAMS failed: %d\n",
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ret);
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/* Disable notification */
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atif->notification_cfg.enabled = false;
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}
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}
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out:
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rdev->acpi_nb.notifier_call = radeon_acpi_event;
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register_acpi_notifier(&rdev->acpi_nb);
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return ret;
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}
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void radeon_acpi_fini(struct radeon_device *rdev)
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{
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unregister_acpi_notifier(&rdev->acpi_nb);
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}
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