drm/amdgpu: Make struct amdgpu_atif private to amdgpu_acpi.c

Currently, there is nothing in amdgpu that actually uses these structs
other than amdgpu_acpi.c. Additionally, since we're about to start
saving the correct ACPI handle to use for calling ATIF in this struct
this saves us from having to handle making sure that the acpi_handle
(and by proxy, the type definition for acpi_handle and all of the other
acpi headers) doesn't need to be included within the amdgpu_drv struct
itself. This follows the example set by amdgpu_atpx_handler.c.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index a59c07590ceec2f314768066cbed28126ed68a6d..7df5d3d11aff91d415aa1329c757753ff602cb09 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -190,6 +190,7 @@ struct amdgpu_job;
 struct amdgpu_irq_src;
 struct amdgpu_fpriv;
 struct amdgpu_bo_va_mapping;
+struct amdgpu_atif;
 
 enum amdgpu_cp_irq {
        AMDGPU_CP_IRQ_GFX_EOP = 0,
@@ -1269,43 +1270,6 @@ struct amdgpu_vram_scratch {
 /*
  * ACPI
  */
-struct amdgpu_atif_notification_cfg {
-       bool enabled;
-       int command_code;
-};
-
-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;
-};
-
-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;
-};
-
-struct amdgpu_atif {
-       struct amdgpu_atif_notifications notifications;
-       struct amdgpu_atif_functions functions;
-       struct amdgpu_atif_notification_cfg notification_cfg;
-       struct amdgpu_encoder *encoder_for_bl;
-};
-
 struct amdgpu_atcs_functions {
        bool get_ext_state;
        bool pcie_perf_req;
@@ -1466,7 +1430,7 @@ struct amdgpu_device {
 #if defined(CONFIG_DEBUG_FS)
        struct dentry                   *debugfs_regs[AMDGPU_DEBUGFS_MAX_COMPONENTS];
 #endif
-       struct amdgpu_atif              atif;
+       struct amdgpu_atif              *atif;
        struct amdgpu_atcs              atcs;
        struct mutex                    srbm_mutex;
        /* GRBM index mutex. Protects concurrent access to GRBM index */

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 8fa850a070e0fe8ea7a67823008ff7e543d8d1dc..22c7e8ec0b9a684ec2bde6b8ac568886396fc6ae 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -34,6 +34,43 @@
 #include "amd_acpi.h"
 #include "atom.h"
 
+struct amdgpu_atif_notification_cfg {
+       bool enabled;
+       int command_code;
+};
+
+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;
+};
+
+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;
+};
+
+struct amdgpu_atif {
+       struct amdgpu_atif_notifications notifications;
+       struct amdgpu_atif_functions functions;
+       struct amdgpu_atif_notification_cfg notification_cfg;
+       struct amdgpu_encoder *encoder_for_bl;
+};
+
 /* Call the ATIF method
  */
 /**
@@ -292,7 +329,7 @@ out:
 static int amdgpu_atif_handler(struct amdgpu_device *adev,
                        struct acpi_bus_event *event)
 {
-       struct amdgpu_atif *atif = &adev->atif;
+       struct amdgpu_atif *atif = adev->atif;
        struct atif_sbios_requests req;
        acpi_handle handle;
        int count;
@@ -303,7 +340,8 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
        if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
                return NOTIFY_DONE;
 
-       if (!atif->notification_cfg.enabled ||
+       if (!atif ||
+           !atif->notification_cfg.enabled ||
            event->type != atif->notification_cfg.command_code)
                /* Not our event */
                return NOTIFY_DONE;
@@ -642,7 +680,7 @@ static int amdgpu_acpi_event(struct notifier_block *nb,
 int amdgpu_acpi_init(struct amdgpu_device *adev)
 {
        acpi_handle handle;
-       struct amdgpu_atif *atif = &adev->atif;
+       struct amdgpu_atif *atif;
        struct amdgpu_atcs *atcs = &adev->atcs;
        int ret;
 
@@ -659,11 +697,19 @@ int amdgpu_acpi_init(struct amdgpu_device *adev)
        }
 
        /* Call the ATIF method */
+       atif = kzalloc(sizeof(*atif), GFP_KERNEL);
+       if (!atif) {
+               DRM_WARN("Not enough memory to initialize ATIF\n");
+               goto out;
+       }
+
        ret = amdgpu_atif_verify_interface(handle, atif);
        if (ret) {
                DRM_DEBUG_DRIVER("Call to ATIF verify_interface failed: %d\n", ret);
+               kfree(atif);
                goto out;
        }
+       adev->atif = atif;
 
        if (atif->notifications.brightness_change) {
                struct drm_encoder *tmp;
@@ -720,4 +766,6 @@ out:
 void amdgpu_acpi_fini(struct amdgpu_device *adev)
 {
        unregister_acpi_notifier(&adev->acpi_nb);
+       if (adev->atif)
+               kfree(adev->atif);
 }