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linux_dsm_epyc7002/drivers/gpu/drm/amd/include/amd_acpi.h
David Francis 206bbafe00 drm/amd: Query and use ACPI backlight caps 
ACPI ATIF has a function called query
backlight transfer characteristics.  Among the
information returned by this function is
the minimum and maximum input signals for the
backlight

Call that function on ACPI init.  When DM
backlight device is updated, copy over the
backlight caps into DM, but only once.  Use
the backlight caps in the backlight-to-dc
calculation

Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-26 15:54:39 -05:00

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/*
* Copyright 2012 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef AMD_ACPI_H
#define AMD_ACPI_H
#define ACPI_AC_CLASS "ac_adapter"
struct atif_verify_interface {
u16 size; /* structure size in bytes (includes size field) */
u16 version; /* version */
u32 notification_mask; /* supported notifications mask */
u32 function_bits; /* supported functions bit vector */
} __packed;
struct atif_system_params {
u16 size; /* structure size in bytes (includes size field) */
u32 valid_mask; /* valid flags mask */
u32 flags; /* flags */
u8 command_code; /* notify command code */
} __packed;
struct atif_sbios_requests {
u16 size; /* structure size in bytes (includes size field) */
u32 pending; /* pending sbios requests */
u8 panel_exp_mode; /* panel expansion mode */
u8 thermal_gfx; /* thermal state: target gfx controller */
u8 thermal_state; /* thermal state: state id (0: exit state, non-0: state) */
u8 forced_power_gfx; /* forced power state: target gfx controller */
u8 forced_power_state; /* forced power state: state id */
u8 system_power_src; /* system power source */
u8 backlight_level; /* panel backlight level (0-255) */
} __packed;
struct atif_qbtc_arguments {
u16 size; /* structure size in bytes (includes size field) */
u8 requested_display; /* which display is requested */
} __packed;
#define ATIF_QBTC_MAX_DATA_POINTS 99
struct atif_qbtc_data_point {
u8 luminance; /* luminance in percent */
u8 ipnut_signal; /* input signal in range 0-255 */
} __packed;
struct atif_qbtc_output {
u16 size; /* structure size in bytes (includes size field) */
u16 flags; /* all zeroes */
u8 error_code; /* error code */
u8 ac_level; /* default brightness on AC power */
u8 dc_level; /* default brightness on DC power */
u8 min_input_signal; /* max input signal in range 0-255 */
u8 max_input_signal; /* min input signal in range 0-255 */
u8 number_of_points; /* number of data points */
struct atif_qbtc_data_point data_points[ATIF_QBTC_MAX_DATA_POINTS];
} __packed;
#define ATIF_NOTIFY_MASK 0x3
#define ATIF_NOTIFY_NONE 0
#define ATIF_NOTIFY_81 1
#define ATIF_NOTIFY_N 2
struct atcs_verify_interface {
u16 size; /* structure size in bytes (includes size field) */
u16 version; /* version */
u32 function_bits; /* supported functions bit vector */
} __packed;
#define ATCS_VALID_FLAGS_MASK 0x3
struct atcs_pref_req_input {
u16 size; /* structure size in bytes (includes size field) */
u16 client_id; /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */
u16 valid_flags_mask; /* valid flags mask */
u16 flags; /* flags */
u8 req_type; /* request type */
u8 perf_req; /* performance request */
} __packed;
struct atcs_pref_req_output {
u16 size; /* structure size in bytes (includes size field) */
u8 ret_val; /* return value */
} __packed;
/* AMD hw uses four ACPI control methods:
* 1. ATIF
* ARG0: (ACPI_INTEGER) function code
* ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes
* OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes
* ATIF provides an entry point for the gfx driver to interact with the sbios.
* The AMD ACPI notification mechanism uses Notify (VGA, 0x81) or a custom
* notification. Which notification is used as indicated by the ATIF Control
* Method GET_SYSTEM_PARAMETERS. When the driver receives Notify (VGA, 0x81) or
* a custom notification it invokes ATIF Control Method GET_SYSTEM_BIOS_REQUESTS
* to identify pending System BIOS requests and associated parameters. For
* example, if one of the pending requests is DISPLAY_SWITCH_REQUEST, the driver
* will perform display device detection and invoke ATIF Control Method
* SELECT_ACTIVE_DISPLAYS.
*
* 2. ATPX
* ARG0: (ACPI_INTEGER) function code
* ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes
* OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes
* ATPX methods are used on PowerXpress systems to handle mux switching and
* discrete GPU power control.
*
* 3. ATRM
* ARG0: (ACPI_INTEGER) offset of vbios rom data
* ARG1: (ACPI_BUFFER) size of the buffer to fill (up to 4K).
* OUTPUT: (ACPI_BUFFER) output buffer
* ATRM provides an interfacess to access the discrete GPU vbios image on
* PowerXpress systems with multiple GPUs.
*
* 4. ATCS
* ARG0: (ACPI_INTEGER) function code
* ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes
* OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes
* ATCS provides an interface to AMD chipset specific functionality.
*
*/
/* ATIF */
#define ATIF_FUNCTION_VERIFY_INTERFACE 0x0
/* ARG0: ATIF_FUNCTION_VERIFY_INTERFACE
* ARG1: none
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* WORD - version
* DWORD - supported notifications mask
* DWORD - supported functions bit vector
*/
/* Notifications mask */
# define ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED (1 << 2)
# define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED (1 << 3)
# define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED (1 << 4)
# define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED (1 << 7)
# define ATIF_DGPU_DISPLAY_EVENT_SUPPORTED (1 << 8)
# define ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST_SUPPORTED (1 << 12)
/* supported functions vector */
# define ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED (1 << 0)
# define ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED (1 << 1)
# define ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED (1 << 12)
# define ATIF_QUERY_BACKLIGHT_TRANSFER_CHARACTERISTICS_SUPPORTED (1 << 15)
# define ATIF_READY_TO_UNDOCK_NOTIFICATION_SUPPORTED (1 << 16)
# define ATIF_GET_EXTERNAL_GPU_INFORMATION_SUPPORTED (1 << 20)
#define ATIF_FUNCTION_GET_SYSTEM_PARAMETERS 0x1
/* ARG0: ATIF_FUNCTION_GET_SYSTEM_PARAMETERS
* ARG1: none
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* DWORD - valid flags mask
* DWORD - flags
*
* OR
*
* WORD - structure size in bytes (includes size field)
* DWORD - valid flags mask
* DWORD - flags
* BYTE - notify command code
*
* flags
* bits 1:0:
* 0 - Notify(VGA, 0x81) is not used for notification
* 1 - Notify(VGA, 0x81) is used for notification
* 2 - Notify(VGA, n) is used for notification where
* n (0xd0-0xd9) is specified in notify command code.
* bit 2:
* 1 - lid changes not reported though int10
* bit 3:
* 1 - system bios controls overclocking
* bit 4:
* 1 - enable overclocking
*/
#define ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS 0x2
/* ARG0: ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS
* ARG1: none
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* DWORD - pending sbios requests
* BYTE - reserved (all zeroes)
* BYTE - thermal state: target gfx controller
* BYTE - thermal state: state id (0: exit state, non-0: state)
* BYTE - forced power state: target gfx controller
* BYTE - forced power state: state id (0: forced state, non-0: state)
* BYTE - system power source
* BYTE - panel backlight level (0-255)
* BYTE - GPU package power limit: target gfx controller
* DWORD - GPU package power limit: value (24:8 fractional format, Watts)
*/
/* pending sbios requests */
# define ATIF_THERMAL_STATE_CHANGE_REQUEST (1 << 2)
# define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST (1 << 3)
# define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST (1 << 4)
# define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST (1 << 7)
# define ATIF_DGPU_DISPLAY_EVENT (1 << 8)
# define ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST (1 << 12)
/* target gfx controller */
# define ATIF_TARGET_GFX_SINGLE 0
# define ATIF_TARGET_GFX_PX_IGPU 1
# define ATIF_TARGET_GFX_PX_DGPU 2
/* system power source */
# define ATIF_POWER_SOURCE_AC 1
# define ATIF_POWER_SOURCE_DC 2
# define ATIF_POWER_SOURCE_RESTRICTED_AC_1 3
# define ATIF_POWER_SOURCE_RESTRICTED_AC_2 4
#define ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION 0xD
/* ARG0: ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION
* ARG1:
* WORD - structure size in bytes (includes size field)
* WORD - gfx controller id
* BYTE - current temperature (degress Celsius)
* OUTPUT: none
*/
#define ATIF_FUNCTION_QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS 0x10
/* ARG0: ATIF_FUNCTION_QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS
* ARG1:
* WORD - structure size in bytes (includes size field)
* BYTE - requested display
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* WORD - flags (currently all 16 bits are reserved)
* BYTE - error code (on failure, disregard all below fields)
* BYTE - AC level (default brightness in percent when machine has full power)
* BYTE - DC level (default brightness in percent when machine is on battery)
* BYTE - min input signal, in range 0-255, corresponding to 0% backlight
* BYTE - max input signal, in range 0-255, corresponding to 100% backlight
* BYTE - number of reported data points
* BYTE - luminance level in percent \ repeated structure
* BYTE - input signal in range 0-255 / does not have entries for 0% and 100%
*/
/* requested display */
# define ATIF_QBTC_REQUEST_LCD1 0
# define ATIF_QBTC_REQUEST_CRT1 1
# define ATIF_QBTC_REQUEST_DFP1 3
# define ATIF_QBTC_REQUEST_CRT2 4
# define ATIF_QBTC_REQUEST_LCD2 5
# define ATIF_QBTC_REQUEST_DFP2 7
# define ATIF_QBTC_REQUEST_DFP3 9
# define ATIF_QBTC_REQUEST_DFP4 10
# define ATIF_QBTC_REQUEST_DFP5 11
# define ATIF_QBTC_REQUEST_DFP6 12
/* error code */
# define ATIF_QBTC_ERROR_CODE_SUCCESS 0
# define ATIF_QBTC_ERROR_CODE_FAILURE 1
# define ATIF_QBTC_ERROR_CODE_DEVICE_NOT_SUPPORTED 2
#define ATIF_FUNCTION_READY_TO_UNDOCK_NOTIFICATION 0x11
/* ARG0: ATIF_FUNCTION_READY_TO_UNDOCK_NOTIFICATION
* ARG1: none
* OUTPUT: none
*/
#define ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION 0x15
/* ARG0: ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION
* ARG1: none
* OUTPUT:
* WORD - number of reported external gfx devices
* WORD - device structure size in bytes (excludes device size field)
* WORD - flags \
* WORD - bus number / repeated structure
*/
/* flags */
# define ATIF_EXTERNAL_GRAPHICS_PORT (1 << 0)
/* ATPX */
#define ATPX_FUNCTION_VERIFY_INTERFACE 0x0
/* ARG0: ATPX_FUNCTION_VERIFY_INTERFACE
* ARG1: none
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* WORD - version
* DWORD - supported functions bit vector
*/
/* supported functions vector */
# define ATPX_GET_PX_PARAMETERS_SUPPORTED (1 << 0)
# define ATPX_POWER_CONTROL_SUPPORTED (1 << 1)
# define ATPX_DISPLAY_MUX_CONTROL_SUPPORTED (1 << 2)
# define ATPX_I2C_MUX_CONTROL_SUPPORTED (1 << 3)
# define ATPX_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION_SUPPORTED (1 << 4)
# define ATPX_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION_SUPPORTED (1 << 5)
# define ATPX_GET_DISPLAY_CONNECTORS_MAPPING_SUPPORTED (1 << 7)
# define ATPX_GET_DISPLAY_DETECTION_PORTS_SUPPORTED (1 << 8)
#define ATPX_FUNCTION_GET_PX_PARAMETERS 0x1
/* ARG0: ATPX_FUNCTION_GET_PX_PARAMETERS
* ARG1: none
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* DWORD - valid flags mask
* DWORD - flags
*/
/* flags */
# define ATPX_LVDS_I2C_AVAILABLE_TO_BOTH_GPUS (1 << 0)
# define ATPX_CRT1_I2C_AVAILABLE_TO_BOTH_GPUS (1 << 1)
# define ATPX_DVI1_I2C_AVAILABLE_TO_BOTH_GPUS (1 << 2)
# define ATPX_CRT1_RGB_SIGNAL_MUXED (1 << 3)
# define ATPX_TV_SIGNAL_MUXED (1 << 4)
# define ATPX_DFP_SIGNAL_MUXED (1 << 5)
# define ATPX_SEPARATE_MUX_FOR_I2C (1 << 6)
# define ATPX_DYNAMIC_PX_SUPPORTED (1 << 7)
# define ATPX_ACF_NOT_SUPPORTED (1 << 8)
# define ATPX_FIXED_NOT_SUPPORTED (1 << 9)
# define ATPX_DYNAMIC_DGPU_POWER_OFF_SUPPORTED (1 << 10)
# define ATPX_DGPU_REQ_POWER_FOR_DISPLAYS (1 << 11)
# define ATPX_DGPU_CAN_DRIVE_DISPLAYS (1 << 12)
# define ATPX_MS_HYBRID_GFX_SUPPORTED (1 << 14)
#define ATPX_FUNCTION_POWER_CONTROL 0x2
/* ARG0: ATPX_FUNCTION_POWER_CONTROL
* ARG1:
* WORD - structure size in bytes (includes size field)
* BYTE - dGPU power state (0: power off, 1: power on)
* OUTPUT: none
*/
#define ATPX_FUNCTION_DISPLAY_MUX_CONTROL 0x3
/* ARG0: ATPX_FUNCTION_DISPLAY_MUX_CONTROL
* ARG1:
* WORD - structure size in bytes (includes size field)
* WORD - display mux control (0: iGPU, 1: dGPU)
* OUTPUT: none
*/
# define ATPX_INTEGRATED_GPU 0
# define ATPX_DISCRETE_GPU 1
#define ATPX_FUNCTION_I2C_MUX_CONTROL 0x4
/* ARG0: ATPX_FUNCTION_I2C_MUX_CONTROL
* ARG1:
* WORD - structure size in bytes (includes size field)
* WORD - i2c/aux/hpd mux control (0: iGPU, 1: dGPU)
* OUTPUT: none
*/
#define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION 0x5
/* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION
* ARG1:
* WORD - structure size in bytes (includes size field)
* WORD - target gpu (0: iGPU, 1: dGPU)
* OUTPUT: none
*/
#define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION 0x6
/* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION
* ARG1:
* WORD - structure size in bytes (includes size field)
* WORD - target gpu (0: iGPU, 1: dGPU)
* OUTPUT: none
*/
#define ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING 0x8
/* ARG0: ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING
* ARG1: none
* OUTPUT:
* WORD - number of display connectors
* WORD - connector structure size in bytes (excludes connector size field)
* BYTE - flags \
* BYTE - ATIF display vector bit position } repeated
* BYTE - adapter id (0: iGPU, 1-n: dGPU ordered by pcie bus number) } structure
* WORD - connector ACPI id /
*/
/* flags */
# define ATPX_DISPLAY_OUTPUT_SUPPORTED_BY_ADAPTER_ID_DEVICE (1 << 0)
# define ATPX_DISPLAY_HPD_SUPPORTED_BY_ADAPTER_ID_DEVICE (1 << 1)
# define ATPX_DISPLAY_I2C_SUPPORTED_BY_ADAPTER_ID_DEVICE (1 << 2)
#define ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS 0x9
/* ARG0: ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS
* ARG1: none
* OUTPUT:
* WORD - number of HPD/DDC ports
* WORD - port structure size in bytes (excludes port size field)
* BYTE - ATIF display vector bit position \
* BYTE - hpd id } reapeated structure
* BYTE - ddc id /
*
* available on A+A systems only
*/
/* hpd id */
# define ATPX_HPD_NONE 0
# define ATPX_HPD1 1
# define ATPX_HPD2 2
# define ATPX_HPD3 3
# define ATPX_HPD4 4
# define ATPX_HPD5 5
# define ATPX_HPD6 6
/* ddc id */
# define ATPX_DDC_NONE 0
# define ATPX_DDC1 1
# define ATPX_DDC2 2
# define ATPX_DDC3 3
# define ATPX_DDC4 4
# define ATPX_DDC5 5
# define ATPX_DDC6 6
# define ATPX_DDC7 7
# define ATPX_DDC8 8
/* ATCS */
#define ATCS_FUNCTION_VERIFY_INTERFACE 0x0
/* ARG0: ATCS_FUNCTION_VERIFY_INTERFACE
* ARG1: none
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* WORD - version
* DWORD - supported functions bit vector
*/
/* supported functions vector */
# define ATCS_GET_EXTERNAL_STATE_SUPPORTED (1 << 0)
# define ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED (1 << 1)
# define ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED (1 << 2)
# define ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED (1 << 3)
#define ATCS_FUNCTION_GET_EXTERNAL_STATE 0x1
/* ARG0: ATCS_FUNCTION_GET_EXTERNAL_STATE
* ARG1: none
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* DWORD - valid flags mask
* DWORD - flags (0: undocked, 1: docked)
*/
/* flags */
# define ATCS_DOCKED (1 << 0)
#define ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST 0x2
/* ARG0: ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST
* ARG1:
* WORD - structure size in bytes (includes size field)
* WORD - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num)
* WORD - valid flags mask
* WORD - flags
* BYTE - request type
* BYTE - performance request
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* BYTE - return value
*/
/* flags */
# define ATCS_ADVERTISE_CAPS (1 << 0)
# define ATCS_WAIT_FOR_COMPLETION (1 << 1)
/* request type */
# define ATCS_PCIE_LINK_SPEED 1
/* performance request */
# define ATCS_REMOVE 0
# define ATCS_FORCE_LOW_POWER 1
# define ATCS_PERF_LEVEL_1 2 /* PCIE Gen 1 */
# define ATCS_PERF_LEVEL_2 3 /* PCIE Gen 2 */
# define ATCS_PERF_LEVEL_3 4 /* PCIE Gen 3 */
/* return value */
# define ATCS_REQUEST_REFUSED 1
# define ATCS_REQUEST_COMPLETE 2
# define ATCS_REQUEST_IN_PROGRESS 3
#define ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION 0x3
/* ARG0: ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION
* ARG1: none
* OUTPUT: none
*/
#define ATCS_FUNCTION_SET_PCIE_BUS_WIDTH 0x4
/* ARG0: ATCS_FUNCTION_SET_PCIE_BUS_WIDTH
* ARG1:
* WORD - structure size in bytes (includes size field)
* WORD - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num)
* BYTE - number of active lanes
* OUTPUT:
* WORD - structure size in bytes (includes size field)
* BYTE - number of active lanes
*/
#endif
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