Re: [PATCH] drm/amd: update ATIF functions in AMD ACPI header

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On Thu, Nov 8, 2018 at 3:57 PM David Francis <David.Francis@xxxxxxx> wrote:
>
> The ACPI interface in AMD was a few years out of date
> and contained some unused and deprecated functions
>
> Remove functions: Select Active Displays, Get Lid State,
> Get TV Standard, Set TV Standard, Get Panel Expansion Mode,
> Set Panel Expansion Mode, Get Graphics Device Types
>
> Add functions: Query Backlight Transfer Characteristics,
> Ready To Undock Notification
>
> Changed functions: Get System Parameters,
> Get System BIOS Requests
>
> All changes are right from the standard
> ATI ACPI Control Methods V0.44
>
> Signed-off-by: David Francis <David.Francis@xxxxxxx>

Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c |  31 ++---
>  drivers/gpu/drm/amd/include/amd_acpi.h   | 151 +++++++----------------
>  2 files changed, 56 insertions(+), 126 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> index 7f0afc526419..471266901d1b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> @@ -41,28 +41,21 @@ struct amdgpu_atif_notification_cfg {
>  };
>
>  struct amdgpu_atif_notifications {
> -       bool display_switch;
> -       bool expansion_mode_change;
>         bool thermal_state;
>         bool forced_power_state;
>         bool system_power_state;
> -       bool display_conf_change;
> -       bool px_gfx_switch;
>         bool brightness_change;
>         bool dgpu_display_event;
> +       bool gpu_package_power_limit;
>  };
>
>  struct amdgpu_atif_functions {
>         bool system_params;
>         bool sbios_requests;
> -       bool select_active_disp;
> -       bool lid_state;
> -       bool get_tv_standard;
> -       bool set_tv_standard;
> -       bool get_panel_expansion_mode;
> -       bool set_panel_expansion_mode;
>         bool temperature_change;
> -       bool graphics_device_types;
> +       bool query_backlight_transfer_characteristics;
> +       bool ready_to_undock;
> +       bool external_gpu_information;
>  };
>
>  struct amdgpu_atif {
> @@ -137,15 +130,12 @@ static union acpi_object *amdgpu_atif_call(struct amdgpu_atif *atif,
>   */
>  static void amdgpu_atif_parse_notification(struct amdgpu_atif_notifications *n, u32 mask)
>  {
> -       n->display_switch = mask & ATIF_DISPLAY_SWITCH_REQUEST_SUPPORTED;
> -       n->expansion_mode_change = mask & ATIF_EXPANSION_MODE_CHANGE_REQUEST_SUPPORTED;
>         n->thermal_state = mask & ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED;
>         n->forced_power_state = mask & ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED;
>         n->system_power_state = mask & ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED;
> -       n->display_conf_change = mask & ATIF_DISPLAY_CONF_CHANGE_REQUEST_SUPPORTED;
> -       n->px_gfx_switch = mask & ATIF_PX_GFX_SWITCH_REQUEST_SUPPORTED;
>         n->brightness_change = mask & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED;
>         n->dgpu_display_event = mask & ATIF_DGPU_DISPLAY_EVENT_SUPPORTED;
> +       n->gpu_package_power_limit = mask & ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST_SUPPORTED;
>  }
>
>  /**
> @@ -162,14 +152,11 @@ static void amdgpu_atif_parse_functions(struct amdgpu_atif_functions *f, u32 mas
>  {
>         f->system_params = mask & ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED;
>         f->sbios_requests = mask & ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED;
> -       f->select_active_disp = mask & ATIF_SELECT_ACTIVE_DISPLAYS_SUPPORTED;
> -       f->lid_state = mask & ATIF_GET_LID_STATE_SUPPORTED;
> -       f->get_tv_standard = mask & ATIF_GET_TV_STANDARD_FROM_CMOS_SUPPORTED;
> -       f->set_tv_standard = mask & ATIF_SET_TV_STANDARD_IN_CMOS_SUPPORTED;
> -       f->get_panel_expansion_mode = mask & ATIF_GET_PANEL_EXPANSION_MODE_FROM_CMOS_SUPPORTED;
> -       f->set_panel_expansion_mode = mask & ATIF_SET_PANEL_EXPANSION_MODE_IN_CMOS_SUPPORTED;
>         f->temperature_change = mask & ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED;
> -       f->graphics_device_types = mask & ATIF_GET_GRAPHICS_DEVICE_TYPES_SUPPORTED;
> +       f->query_backlight_transfer_characteristics =
> +               mask & ATIF_QUERY_BACKLIGHT_TRANSFER_CHARACTERISTICS_SUPPORTED;
> +       f->ready_to_undock = mask & ATIF_READY_TO_UNDOCK_NOTIFICATION_SUPPORTED;
> +       f->external_gpu_information = mask & ATIF_GET_EXTERNAL_GPU_INFORMATION_SUPPORTED;
>  }
>
>  /**
> diff --git a/drivers/gpu/drm/amd/include/amd_acpi.h b/drivers/gpu/drm/amd/include/amd_acpi.h
> index 9b9699fc433f..8980edfe5fa9 100644
> --- a/drivers/gpu/drm/amd/include/amd_acpi.h
> +++ b/drivers/gpu/drm/amd/include/amd_acpi.h
> @@ -126,26 +126,18 @@ struct atcs_pref_req_output {
>   * DWORD - supported functions bit vector
>   */
>  /* Notifications mask */
> -#       define ATIF_DISPLAY_SWITCH_REQUEST_SUPPORTED               (1 << 0)
> -#       define ATIF_EXPANSION_MODE_CHANGE_REQUEST_SUPPORTED        (1 << 1)
>  #       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_DISPLAY_CONF_CHANGE_REQUEST_SUPPORTED          (1 << 5)
> -#       define ATIF_PX_GFX_SWITCH_REQUEST_SUPPORTED                (1 << 6)
>  #       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_SELECT_ACTIVE_DISPLAYS_SUPPORTED              (1 << 2)
> -#       define ATIF_GET_LID_STATE_SUPPORTED                       (1 << 3)
> -#       define ATIF_GET_TV_STANDARD_FROM_CMOS_SUPPORTED           (1 << 4)
> -#       define ATIF_SET_TV_STANDARD_IN_CMOS_SUPPORTED             (1 << 5)
> -#       define ATIF_GET_PANEL_EXPANSION_MODE_FROM_CMOS_SUPPORTED  (1 << 6)
> -#       define ATIF_SET_PANEL_EXPANSION_MODE_IN_CMOS_SUPPORTED    (1 << 7)
>  #       define ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED     (1 << 12)
> -#       define ATIF_GET_GRAPHICS_DEVICE_TYPES_SUPPORTED           (1 << 14)
> +#       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
> @@ -170,6 +162,10 @@ struct atcs_pref_req_output {
>   * 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
> @@ -177,28 +173,23 @@ struct atcs_pref_req_output {
>   * OUTPUT:
>   * WORD  - structure size in bytes (includes size field)
>   * DWORD - pending sbios requests
> - * BYTE  - panel expansion mode
> + * 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
> + * 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_DISPLAY_SWITCH_REQUEST                         (1 << 0)
> -#       define ATIF_EXPANSION_MODE_CHANGE_REQUEST                  (1 << 1)
>  #       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_DISPLAY_CONF_CHANGE_REQUEST                    (1 << 5)
> -#       define ATIF_PX_GFX_SWITCH_REQUEST                          (1 << 6)
>  #       define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST                (1 << 7)
>  #       define ATIF_DGPU_DISPLAY_EVENT                             (1 << 8)
> -/* panel expansion mode */
> -#       define ATIF_PANEL_EXPANSION_DISABLE                        0
> -#       define ATIF_PANEL_EXPANSION_FULL                           1
> -#       define ATIF_PANEL_EXPANSION_ASPECT                         2
> +#       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
> @@ -208,76 +199,6 @@ struct atcs_pref_req_output {
>  #       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_SELECT_ACTIVE_DISPLAYS                       0x3
> -/* ARG0: ATIF_FUNCTION_SELECT_ACTIVE_DISPLAYS
> - * ARG1:
> - * WORD  - structure size in bytes (includes size field)
> - * WORD  - selected displays
> - * WORD  - connected displays
> - * OUTPUT:
> - * WORD  - structure size in bytes (includes size field)
> - * WORD  - selected displays
> - */
> -#       define ATIF_LCD1                                           (1 << 0)
> -#       define ATIF_CRT1                                           (1 << 1)
> -#       define ATIF_TV                                             (1 << 2)
> -#       define ATIF_DFP1                                           (1 << 3)
> -#       define ATIF_CRT2                                           (1 << 4)
> -#       define ATIF_LCD2                                           (1 << 5)
> -#       define ATIF_DFP2                                           (1 << 7)
> -#       define ATIF_CV                                             (1 << 8)
> -#       define ATIF_DFP3                                           (1 << 9)
> -#       define ATIF_DFP4                                           (1 << 10)
> -#       define ATIF_DFP5                                           (1 << 11)
> -#       define ATIF_DFP6                                           (1 << 12)
> -#define ATIF_FUNCTION_GET_LID_STATE                                0x4
> -/* ARG0: ATIF_FUNCTION_GET_LID_STATE
> - * ARG1: none
> - * OUTPUT:
> - * WORD  - structure size in bytes (includes size field)
> - * BYTE  - lid state (0: open, 1: closed)
> - *
> - * GET_LID_STATE only works at boot and resume, for general lid
> - * status, use the kernel provided status
> - */
> -#define ATIF_FUNCTION_GET_TV_STANDARD_FROM_CMOS                    0x5
> -/* ARG0: ATIF_FUNCTION_GET_TV_STANDARD_FROM_CMOS
> - * ARG1: none
> - * OUTPUT:
> - * WORD  - structure size in bytes (includes size field)
> - * BYTE  - 0
> - * BYTE  - TV standard
> - */
> -#       define ATIF_TV_STD_NTSC                                    0
> -#       define ATIF_TV_STD_PAL                                     1
> -#       define ATIF_TV_STD_PALM                                    2
> -#       define ATIF_TV_STD_PAL60                                   3
> -#       define ATIF_TV_STD_NTSCJ                                   4
> -#       define ATIF_TV_STD_PALCN                                   5
> -#       define ATIF_TV_STD_PALN                                    6
> -#       define ATIF_TV_STD_SCART_RGB                               9
> -#define ATIF_FUNCTION_SET_TV_STANDARD_IN_CMOS                      0x6
> -/* ARG0: ATIF_FUNCTION_SET_TV_STANDARD_IN_CMOS
> - * ARG1:
> - * WORD  - structure size in bytes (includes size field)
> - * BYTE  - 0
> - * BYTE  - TV standard
> - * OUTPUT: none
> - */
> -#define ATIF_FUNCTION_GET_PANEL_EXPANSION_MODE_FROM_CMOS           0x7
> -/* ARG0: ATIF_FUNCTION_GET_PANEL_EXPANSION_MODE_FROM_CMOS
> - * ARG1: none
> - * OUTPUT:
> - * WORD  - structure size in bytes (includes size field)
> - * BYTE  - panel expansion mode
> - */
> -#define ATIF_FUNCTION_SET_PANEL_EXPANSION_MODE_IN_CMOS             0x8
> -/* ARG0: ATIF_FUNCTION_SET_PANEL_EXPANSION_MODE_IN_CMOS
> - * ARG1:
> - * WORD  - structure size in bytes (includes size field)
> - * BYTE  - panel expansion mode
> - * OUTPUT: none
> - */
>  #define ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION              0xD
>  /* ARG0: ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION
>   * ARG1:
> @@ -286,21 +207,43 @@ struct atcs_pref_req_output {
>   * BYTE  - current temperature (degress Celsius)
>   * OUTPUT: none
>   */
> -#define ATIF_FUNCTION_GET_GRAPHICS_DEVICE_TYPES                    0xF
> -/* ARG0: ATIF_FUNCTION_GET_GRAPHICS_DEVICE_TYPES
> - * ARG1: 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  - number of gfx devices
> - * WORD  - device structure size in bytes (excludes device size field)
> - * DWORD - flags         \
> - * WORD  - bus number     } repeated structure
> - * WORD  - device number /
> + * 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
>   */
> -/* flags */
> -#       define ATIF_PX_REMOVABLE_GRAPHICS_DEVICE                   (1 << 0)
> -#       define ATIF_XGP_PORT                                       (1 << 1)
> -#       define ATIF_VGA_ENABLED_GRAPHICS_DEVICE                    (1 << 2)
> -#       define ATIF_XGP_PORT_IN_DOCK                               (1 << 3)
>  #define ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION                 0x15
>  /* ARG0: ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION
>   * ARG1: none
> --
> 2.17.1
>
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