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![Lukas Wunner](/assets/img/avatar_default.png)
This was added to three files even though they don't use any vga_switcheroo symbols: Added to radeon_acpi.c by commitd7a2952f1a
("drm/radeon: Add support for the ATIF ACPI method to the radeon driver"). Added to radeon_asic.c by commit0a10c85129
("drm/radeon: create radeon_asic.c"). Added to radeon_bios.c by commit6a9ee8af34
("vga_switcheroo: initial implementation (v15)"). Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
789 lines
22 KiB
C
789 lines
22 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/video.h>
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#include <drm/drmP.h>
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#include <drm/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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#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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struct atcs_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 function_bits; /* supported functions bit vector */
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} __packed;
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#define ATCS_VALID_FLAGS_MASK 0x3
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struct atcs_pref_req_input {
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u16 size; /* structure size in bytes (includes size field) */
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u16 client_id; /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */
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u16 valid_flags_mask; /* valid flags mask */
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u16 flags; /* flags */
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u8 req_type; /* request type */
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u8 perf_req; /* performance request */
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} __packed;
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struct atcs_pref_req_output {
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u16 size; /* structure size in bytes (includes size field) */
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u8 ret_val; /* return value */
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} __packed;
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/* Call the ATIF method
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*/
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/**
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* radeon_atif_call - call an ATIF method
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*
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* @handle: acpi handle
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* @function: the ATIF function to execute
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* @params: ATIF function params
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*
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* Executes the requested ATIF function (all asics).
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* Returns a pointer to the acpi output buffer.
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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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/**
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* radeon_atif_parse_notification - parse supported notifications
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*
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* @n: supported notifications struct
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* @mask: supported notifications mask from ATIF
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*
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* Use the supported notifications mask from ATIF function
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* ATIF_FUNCTION_VERIFY_INTERFACE to determine what notifications
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* are supported (all asics).
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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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/**
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* radeon_atif_parse_functions - parse supported functions
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*
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* @f: supported functions struct
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* @mask: supported functions mask from ATIF
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*
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* Use the supported functions mask from ATIF function
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* ATIF_FUNCTION_VERIFY_INTERFACE to determine what functions
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* are supported (all asics).
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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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/**
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* radeon_atif_verify_interface - verify ATIF
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*
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* @handle: acpi handle
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* @atif: radeon atif struct
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*
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* Execute the ATIF_FUNCTION_VERIFY_INTERFACE ATIF function
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* to initialize ATIF and determine what features are supported
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* (all asics).
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* returns 0 on success, error on failure.
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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: %zu\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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/**
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* radeon_atif_get_notification_params - determine notify configuration
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*
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* @handle: acpi handle
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* @n: atif notification configuration struct
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*
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* Execute the ATIF_FUNCTION_GET_SYSTEM_PARAMETERS ATIF function
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* to determine if a notifier is used and if so which one
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* (all asics). This is either Notify(VGA, 0x81) or Notify(VGA, n)
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* where n is specified in the result if a notifier is used.
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* Returns 0 on success, error on failure.
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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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/**
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* radeon_atif_get_sbios_requests - get requested sbios event
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*
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* @handle: acpi handle
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* @req: atif sbios request struct
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*
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* Execute the ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS ATIF function
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* to determine what requests the sbios is making to the driver
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* (all asics).
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* Returns 0 on success, error on failure.
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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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/**
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* radeon_atif_handler - handle ATIF notify requests
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*
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* @rdev: radeon_device pointer
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* @event: atif sbios request struct
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*
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* Checks the acpi event and if it matches an atif event,
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* handles it.
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* Returns NOTIFY code
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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 = 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->encoder_for_bl;
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if (enc) {
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DRM_DEBUG_DRIVER("Changing brightness to %d\n",
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req.backlight_level);
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radeon_set_backlight_level(rdev, enc, req.backlight_level);
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#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
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if (rdev->is_atom_bios) {
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struct radeon_encoder_atom_dig *dig = enc->enc_priv;
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backlight_force_update(dig->bl_dev,
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BACKLIGHT_UPDATE_HOTKEY);
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} else {
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struct radeon_encoder_lvds *dig = enc->enc_priv;
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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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#endif
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}
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}
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/* TODO: check other events */
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/* We've handled the event, stop the notifier chain. The ACPI interface
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* overloads ACPI_VIDEO_NOTIFY_PROBE, we don't want to send that to
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* userspace if the event was generated only to signal a SBIOS
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* request.
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*/
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return NOTIFY_BAD;
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}
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|
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/* Call the ATCS method
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*/
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/**
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* radeon_atcs_call - call an ATCS method
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*
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* @handle: acpi handle
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* @function: the ATCS function to execute
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* @params: ATCS function params
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*
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* Executes the requested ATCS function (all asics).
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* Returns a pointer to the acpi output buffer.
|
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*/
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static union acpi_object *radeon_atcs_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 atcs_arg_elements[2];
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struct acpi_object_list atcs_arg;
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struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
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atcs_arg.count = 2;
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atcs_arg.pointer = &atcs_arg_elements[0];
|
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|
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atcs_arg_elements[0].type = ACPI_TYPE_INTEGER;
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atcs_arg_elements[0].integer.value = function;
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|
|
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if (params) {
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atcs_arg_elements[1].type = ACPI_TYPE_BUFFER;
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atcs_arg_elements[1].buffer.length = params->length;
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atcs_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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atcs_arg_elements[1].type = ACPI_TYPE_INTEGER;
|
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atcs_arg_elements[1].integer.value = 0;
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}
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|
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status = acpi_evaluate_object(handle, "ATCS", &atcs_arg, &buffer);
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|
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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 ATCS 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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|
|
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return buffer.pointer;
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}
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|
|
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/**
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* radeon_atcs_parse_functions - parse supported functions
|
|
*
|
|
* @f: supported functions struct
|
|
* @mask: supported functions mask from ATCS
|
|
*
|
|
* Use the supported functions mask from ATCS function
|
|
* ATCS_FUNCTION_VERIFY_INTERFACE to determine what functions
|
|
* are supported (all asics).
|
|
*/
|
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static void radeon_atcs_parse_functions(struct radeon_atcs_functions *f, u32 mask)
|
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{
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|
f->get_ext_state = mask & ATCS_GET_EXTERNAL_STATE_SUPPORTED;
|
|
f->pcie_perf_req = mask & ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED;
|
|
f->pcie_dev_rdy = mask & ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED;
|
|
f->pcie_bus_width = mask & ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED;
|
|
}
|
|
|
|
/**
|
|
* radeon_atcs_verify_interface - verify ATCS
|
|
*
|
|
* @handle: acpi handle
|
|
* @atcs: radeon atcs struct
|
|
*
|
|
* Execute the ATCS_FUNCTION_VERIFY_INTERFACE ATCS function
|
|
* to initialize ATCS and determine what features are supported
|
|
* (all asics).
|
|
* returns 0 on success, error on failure.
|
|
*/
|
|
static int radeon_atcs_verify_interface(acpi_handle handle,
|
|
struct radeon_atcs *atcs)
|
|
{
|
|
union acpi_object *info;
|
|
struct atcs_verify_interface output;
|
|
size_t size;
|
|
int err = 0;
|
|
|
|
info = radeon_atcs_call(handle, ATCS_FUNCTION_VERIFY_INTERFACE, NULL);
|
|
if (!info)
|
|
return -EIO;
|
|
|
|
memset(&output, 0, sizeof(output));
|
|
|
|
size = *(u16 *) info->buffer.pointer;
|
|
if (size < 8) {
|
|
DRM_INFO("ATCS buffer is too small: %zu\n", size);
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
size = min(sizeof(output), size);
|
|
|
|
memcpy(&output, info->buffer.pointer, size);
|
|
|
|
/* TODO: check version? */
|
|
DRM_DEBUG_DRIVER("ATCS version %u\n", output.version);
|
|
|
|
radeon_atcs_parse_functions(&atcs->functions, output.function_bits);
|
|
|
|
out:
|
|
kfree(info);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* radeon_acpi_is_pcie_performance_request_supported
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Check if the ATCS pcie_perf_req and pcie_dev_rdy methods
|
|
* are supported (all asics).
|
|
* returns true if supported, false if not.
|
|
*/
|
|
bool radeon_acpi_is_pcie_performance_request_supported(struct radeon_device *rdev)
|
|
{
|
|
struct radeon_atcs *atcs = &rdev->atcs;
|
|
|
|
if (atcs->functions.pcie_perf_req && atcs->functions.pcie_dev_rdy)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* radeon_acpi_pcie_notify_device_ready
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Executes the PCIE_DEVICE_READY_NOTIFICATION method
|
|
* (all asics).
|
|
* returns 0 on success, error on failure.
|
|
*/
|
|
int radeon_acpi_pcie_notify_device_ready(struct radeon_device *rdev)
|
|
{
|
|
acpi_handle handle;
|
|
union acpi_object *info;
|
|
struct radeon_atcs *atcs = &rdev->atcs;
|
|
|
|
/* Get the device handle */
|
|
handle = ACPI_HANDLE(&rdev->pdev->dev);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
if (!atcs->functions.pcie_dev_rdy)
|
|
return -EINVAL;
|
|
|
|
info = radeon_atcs_call(handle, ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION, NULL);
|
|
if (!info)
|
|
return -EIO;
|
|
|
|
kfree(info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* radeon_acpi_pcie_performance_request
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
* @perf_req: requested perf level (pcie gen speed)
|
|
* @advertise: set advertise caps flag if set
|
|
*
|
|
* Executes the PCIE_PERFORMANCE_REQUEST method to
|
|
* change the pcie gen speed (all asics).
|
|
* returns 0 on success, error on failure.
|
|
*/
|
|
int radeon_acpi_pcie_performance_request(struct radeon_device *rdev,
|
|
u8 perf_req, bool advertise)
|
|
{
|
|
acpi_handle handle;
|
|
union acpi_object *info;
|
|
struct radeon_atcs *atcs = &rdev->atcs;
|
|
struct atcs_pref_req_input atcs_input;
|
|
struct atcs_pref_req_output atcs_output;
|
|
struct acpi_buffer params;
|
|
size_t size;
|
|
u32 retry = 3;
|
|
|
|
/* Get the device handle */
|
|
handle = ACPI_HANDLE(&rdev->pdev->dev);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
if (!atcs->functions.pcie_perf_req)
|
|
return -EINVAL;
|
|
|
|
atcs_input.size = sizeof(struct atcs_pref_req_input);
|
|
/* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */
|
|
atcs_input.client_id = rdev->pdev->devfn | (rdev->pdev->bus->number << 8);
|
|
atcs_input.valid_flags_mask = ATCS_VALID_FLAGS_MASK;
|
|
atcs_input.flags = ATCS_WAIT_FOR_COMPLETION;
|
|
if (advertise)
|
|
atcs_input.flags |= ATCS_ADVERTISE_CAPS;
|
|
atcs_input.req_type = ATCS_PCIE_LINK_SPEED;
|
|
atcs_input.perf_req = perf_req;
|
|
|
|
params.length = sizeof(struct atcs_pref_req_input);
|
|
params.pointer = &atcs_input;
|
|
|
|
while (retry--) {
|
|
info = radeon_atcs_call(handle, ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST, ¶ms);
|
|
if (!info)
|
|
return -EIO;
|
|
|
|
memset(&atcs_output, 0, sizeof(atcs_output));
|
|
|
|
size = *(u16 *) info->buffer.pointer;
|
|
if (size < 3) {
|
|
DRM_INFO("ATCS buffer is too small: %zu\n", size);
|
|
kfree(info);
|
|
return -EINVAL;
|
|
}
|
|
size = min(sizeof(atcs_output), size);
|
|
|
|
memcpy(&atcs_output, info->buffer.pointer, size);
|
|
|
|
kfree(info);
|
|
|
|
switch (atcs_output.ret_val) {
|
|
case ATCS_REQUEST_REFUSED:
|
|
default:
|
|
return -EINVAL;
|
|
case ATCS_REQUEST_COMPLETE:
|
|
return 0;
|
|
case ATCS_REQUEST_IN_PROGRESS:
|
|
udelay(10);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* radeon_acpi_event - handle notify events
|
|
*
|
|
* @nb: notifier block
|
|
* @val: val
|
|
* @data: acpi event
|
|
*
|
|
* Calls relevant radeon functions in response to various
|
|
* acpi events.
|
|
* Returns NOTIFY code
|
|
*/
|
|
static int radeon_acpi_event(struct notifier_block *nb,
|
|
unsigned long val,
|
|
void *data)
|
|
{
|
|
struct radeon_device *rdev = container_of(nb, struct radeon_device, acpi_nb);
|
|
struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
|
|
|
|
if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0) {
|
|
if (power_supply_is_system_supplied() > 0)
|
|
DRM_DEBUG_DRIVER("pm: AC\n");
|
|
else
|
|
DRM_DEBUG_DRIVER("pm: DC\n");
|
|
|
|
radeon_pm_acpi_event_handler(rdev);
|
|
}
|
|
|
|
/* Check for pending SBIOS requests */
|
|
return radeon_atif_handler(rdev, entry);
|
|
}
|
|
|
|
/* Call all ACPI methods here */
|
|
/**
|
|
* radeon_acpi_init - init driver acpi support
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Verifies the AMD ACPI interfaces and registers with the acpi
|
|
* notifier chain (all asics).
|
|
* Returns 0 on success, error on failure.
|
|
*/
|
|
int radeon_acpi_init(struct radeon_device *rdev)
|
|
{
|
|
acpi_handle handle;
|
|
struct radeon_atif *atif = &rdev->atif;
|
|
struct radeon_atcs *atcs = &rdev->atcs;
|
|
int ret;
|
|
|
|
/* Get the device handle */
|
|
handle = ACPI_HANDLE(&rdev->pdev->dev);
|
|
|
|
/* No need to proceed if we're sure that ATIF is not supported */
|
|
if (!ASIC_IS_AVIVO(rdev) || !rdev->bios || !handle)
|
|
return 0;
|
|
|
|
/* Call the ATCS method */
|
|
ret = radeon_atcs_verify_interface(handle, atcs);
|
|
if (ret) {
|
|
DRM_DEBUG_DRIVER("Call to ATCS verify_interface failed: %d\n", ret);
|
|
}
|
|
|
|
/* Call the ATIF method */
|
|
ret = radeon_atif_verify_interface(handle, atif);
|
|
if (ret) {
|
|
DRM_DEBUG_DRIVER("Call to ATIF verify_interface failed: %d\n", ret);
|
|
goto out;
|
|
}
|
|
|
|
if (atif->notifications.brightness_change) {
|
|
struct drm_encoder *tmp;
|
|
struct radeon_encoder *target = NULL;
|
|
|
|
/* Find the encoder controlling the brightness */
|
|
list_for_each_entry(tmp, &rdev->ddev->mode_config.encoder_list,
|
|
head) {
|
|
struct radeon_encoder *enc = to_radeon_encoder(tmp);
|
|
|
|
if ((enc->devices & (ATOM_DEVICE_LCD_SUPPORT)) &&
|
|
enc->enc_priv) {
|
|
if (rdev->is_atom_bios) {
|
|
struct radeon_encoder_atom_dig *dig = enc->enc_priv;
|
|
if (dig->bl_dev) {
|
|
target = enc;
|
|
break;
|
|
}
|
|
} else {
|
|
struct radeon_encoder_lvds *dig = enc->enc_priv;
|
|
if (dig->bl_dev) {
|
|
target = enc;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
atif->encoder_for_bl = target;
|
|
if (!target) {
|
|
/* Brightness change notification is enabled, but we
|
|
* didn't find a backlight controller, this should
|
|
* never happen.
|
|
*/
|
|
DRM_ERROR("Cannot find a backlight controller\n");
|
|
}
|
|
}
|
|
|
|
if (atif->functions.sbios_requests && !atif->functions.system_params) {
|
|
/* XXX check this workraround, if sbios request function is
|
|
* present we have to see how it's configured in the system
|
|
* params
|
|
*/
|
|
atif->functions.system_params = true;
|
|
}
|
|
|
|
if (atif->functions.system_params) {
|
|
ret = radeon_atif_get_notification_params(handle,
|
|
&atif->notification_cfg);
|
|
if (ret) {
|
|
DRM_DEBUG_DRIVER("Call to GET_SYSTEM_PARAMS failed: %d\n",
|
|
ret);
|
|
/* Disable notification */
|
|
atif->notification_cfg.enabled = false;
|
|
}
|
|
}
|
|
|
|
out:
|
|
rdev->acpi_nb.notifier_call = radeon_acpi_event;
|
|
register_acpi_notifier(&rdev->acpi_nb);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* radeon_acpi_fini - tear down driver acpi support
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
*
|
|
* Unregisters with the acpi notifier chain (all asics).
|
|
*/
|
|
void radeon_acpi_fini(struct radeon_device *rdev)
|
|
{
|
|
unregister_acpi_notifier(&rdev->acpi_nb);
|
|
}
|