#include <linux/slab.h>
#include <linux/power_supply.h>
#include <linux/pm_runtime.h>
+#include <linux/suspend.h>
#include <acpi/video.h>
#include <acpi/actbl.h>
struct amdgpu_dm_backlight_caps backlight_caps;
};
+struct amdgpu_atcs_functions {
+ bool get_ext_state;
+ bool pcie_perf_req;
+ bool pcie_dev_rdy;
+ bool pcie_bus_width;
+ bool power_shift_control;
+};
+
+struct amdgpu_atcs {
+ acpi_handle handle;
+
+ struct amdgpu_atcs_functions functions;
+};
+
+static struct amdgpu_acpi_priv {
+ struct amdgpu_atif atif;
+ struct amdgpu_atcs atcs;
+} amdgpu_acpi_priv;
+
/* Call the ATIF method
*/
/**
* amdgpu_atif_call - call an ATIF method
*
- * @handle: acpi handle
+ * @atif: atif structure
* @function: the ATIF function to execute
* @params: ATIF function params
*
/**
* amdgpu_atif_verify_interface - verify ATIF
*
- * @handle: acpi handle
* @atif: amdgpu atif struct
*
* Execute the ATIF_FUNCTION_VERIFY_INTERFACE ATIF function
return err;
}
-static acpi_handle amdgpu_atif_probe_handle(acpi_handle dhandle)
-{
- acpi_handle handle = NULL;
- char acpi_method_name[255] = { 0 };
- struct acpi_buffer buffer = { sizeof(acpi_method_name), acpi_method_name };
- acpi_status status;
-
- /* For PX/HG systems, ATIF and ATPX are in the iGPU's namespace, on dGPU only
- * systems, ATIF is in the dGPU's namespace.
- */
- status = acpi_get_handle(dhandle, "ATIF", &handle);
- if (ACPI_SUCCESS(status))
- goto out;
-
- if (amdgpu_has_atpx()) {
- status = acpi_get_handle(amdgpu_atpx_get_dhandle(), "ATIF",
- &handle);
- if (ACPI_SUCCESS(status))
- goto out;
- }
-
- DRM_DEBUG_DRIVER("No ATIF handle found\n");
- return NULL;
-out:
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
- DRM_DEBUG_DRIVER("Found ATIF handle %s\n", acpi_method_name);
- return handle;
-}
-
/**
* amdgpu_atif_get_notification_params - determine notify configuration
*
- * @handle: acpi handle
- * @n: atif notification configuration struct
+ * @atif: acpi handle
*
* Execute the ATIF_FUNCTION_GET_SYSTEM_PARAMETERS ATIF function
* to determine if a notifier is used and if so which one
/**
* amdgpu_atif_query_backlight_caps - get min and max backlight input signal
*
- * @handle: acpi handle
+ * @atif: acpi handle
*
* Execute the QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS ATIF function
* to determine the acceptable range of backlight values
/**
* amdgpu_atif_get_sbios_requests - get requested sbios event
*
- * @handle: acpi handle
+ * @atif: acpi handle
* @req: atif sbios request struct
*
* Execute the ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS ATIF function
static int amdgpu_atif_handler(struct amdgpu_device *adev,
struct acpi_bus_event *event)
{
- struct amdgpu_atif *atif = adev->atif;
+ struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif;
int count;
DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n",
return NOTIFY_DONE;
/* Is this actually our event? */
- if (!atif ||
- !atif->notification_cfg.enabled ||
+ if (!atif->notification_cfg.enabled ||
event->type != atif->notification_cfg.command_code) {
/* These events will generate keypresses otherwise */
if (event->type == ACPI_VIDEO_NOTIFY_PROBE)
/**
* amdgpu_atcs_call - call an ATCS method
*
- * @handle: acpi handle
+ * @atcs: atcs structure
* @function: the ATCS function to execute
* @params: ATCS function params
*
* Executes the requested ATCS function (all asics).
* Returns a pointer to the acpi output buffer.
*/
-static union acpi_object *amdgpu_atcs_call(acpi_handle handle, int function,
+static union acpi_object *amdgpu_atcs_call(struct amdgpu_atcs *atcs,
+ int function,
struct acpi_buffer *params)
{
acpi_status status;
atcs_arg_elements[1].integer.value = 0;
}
- status = acpi_evaluate_object(handle, "ATCS", &atcs_arg, &buffer);
+ status = acpi_evaluate_object(atcs->handle, NULL, &atcs_arg, &buffer);
/* Fail only if calling the method fails and ATIF is supported */
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
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;
+ f->power_shift_control = mask & ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED;
}
/**
* amdgpu_atcs_verify_interface - verify ATCS
*
- * @handle: acpi handle
* @atcs: amdgpu atcs struct
*
* Execute the ATCS_FUNCTION_VERIFY_INTERFACE ATCS function
* (all asics).
* returns 0 on success, error on failure.
*/
-static int amdgpu_atcs_verify_interface(acpi_handle handle,
- struct amdgpu_atcs *atcs)
+static int amdgpu_atcs_verify_interface(struct amdgpu_atcs *atcs)
{
union acpi_object *info;
struct atcs_verify_interface output;
size_t size;
int err = 0;
- info = amdgpu_atcs_call(handle, ATCS_FUNCTION_VERIFY_INTERFACE, NULL);
+ info = amdgpu_atcs_call(atcs, ATCS_FUNCTION_VERIFY_INTERFACE, NULL);
if (!info)
return -EIO;
*/
bool amdgpu_acpi_is_pcie_performance_request_supported(struct amdgpu_device *adev)
{
- struct amdgpu_atcs *atcs = &adev->atcs;
+ struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs;
if (atcs->functions.pcie_perf_req && atcs->functions.pcie_dev_rdy)
return true;
return false;
}
+/**
+ * amdgpu_acpi_is_power_shift_control_supported
+ *
+ * Check if the ATCS power shift control method
+ * is supported.
+ * returns true if supported, false if not.
+ */
+bool amdgpu_acpi_is_power_shift_control_supported(void)
+{
+ return amdgpu_acpi_priv.atcs.functions.power_shift_control;
+}
+
/**
* amdgpu_acpi_pcie_notify_device_ready
*
*/
int amdgpu_acpi_pcie_notify_device_ready(struct amdgpu_device *adev)
{
- acpi_handle handle;
union acpi_object *info;
- struct amdgpu_atcs *atcs = &adev->atcs;
-
- /* Get the device handle */
- handle = ACPI_HANDLE(&adev->pdev->dev);
- if (!handle)
- return -EINVAL;
+ struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs;
if (!atcs->functions.pcie_dev_rdy)
return -EINVAL;
- info = amdgpu_atcs_call(handle, ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION, NULL);
+ info = amdgpu_atcs_call(atcs, ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION, NULL);
if (!info)
return -EIO;
int amdgpu_acpi_pcie_performance_request(struct amdgpu_device *adev,
u8 perf_req, bool advertise)
{
- acpi_handle handle;
union acpi_object *info;
- struct amdgpu_atcs *atcs = &adev->atcs;
+ struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs;
struct atcs_pref_req_input atcs_input;
struct atcs_pref_req_output atcs_output;
struct acpi_buffer params;
if (amdgpu_acpi_pcie_notify_device_ready(adev))
return -EINVAL;
- /* Get the device handle */
- handle = ACPI_HANDLE(&adev->pdev->dev);
- if (!handle)
- return -EINVAL;
-
if (!atcs->functions.pcie_perf_req)
return -EINVAL;
params.pointer = &atcs_input;
while (retry--) {
- info = amdgpu_atcs_call(handle, ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST, ¶ms);
+ info = amdgpu_atcs_call(atcs, ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST, ¶ms);
if (!info)
return -EIO;
return 0;
}
+/**
+ * amdgpu_acpi_power_shift_control
+ *
+ * @adev: amdgpu_device pointer
+ * @dev_state: device acpi state
+ * @drv_state: driver state
+ *
+ * Executes the POWER_SHIFT_CONTROL method to
+ * communicate current dGPU device state and
+ * driver state to APU/SBIOS.
+ * returns 0 on success, error on failure.
+ */
+int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev,
+ u8 dev_state, bool drv_state)
+{
+ union acpi_object *info;
+ struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs;
+ struct atcs_pwr_shift_input atcs_input;
+ struct acpi_buffer params;
+
+ if (!amdgpu_acpi_is_power_shift_control_supported())
+ return -EINVAL;
+
+ atcs_input.size = sizeof(struct atcs_pwr_shift_input);
+ /* dGPU id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */
+ atcs_input.dgpu_id = adev->pdev->devfn | (adev->pdev->bus->number << 8);
+ atcs_input.dev_acpi_state = dev_state;
+ atcs_input.drv_state = drv_state;
+
+ params.length = sizeof(struct atcs_pwr_shift_input);
+ params.pointer = &atcs_input;
+
+ info = amdgpu_atcs_call(atcs, ATCS_FUNCTION_POWER_SHIFT_CONTROL, ¶ms);
+ if (!info) {
+ DRM_ERROR("ATCS PSC update failed\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/**
+ * amdgpu_acpi_smart_shift_update - update dGPU device state to SBIOS
+ *
+ * @dev: drm_device pointer
+ * @ss_state: current smart shift event
+ *
+ * returns 0 on success,
+ * otherwise return error number.
+ */
+int amdgpu_acpi_smart_shift_update(struct drm_device *dev, enum amdgpu_ss ss_state)
+{
+ struct amdgpu_device *adev = drm_to_adev(dev);
+ int r;
+
+ if (!amdgpu_device_supports_smart_shift(dev))
+ return 0;
+
+ switch (ss_state) {
+ /* SBIOS trigger “stop”, “enable” and “start” at D0, Driver Operational.
+ * SBIOS trigger “stop” at D3, Driver Not Operational.
+ * SBIOS trigger “stop” and “disable” at D0, Driver NOT operational.
+ */
+ case AMDGPU_SS_DRV_LOAD:
+ r = amdgpu_acpi_power_shift_control(adev,
+ AMDGPU_ATCS_PSC_DEV_STATE_D0,
+ AMDGPU_ATCS_PSC_DRV_STATE_OPR);
+ break;
+ case AMDGPU_SS_DEV_D0:
+ r = amdgpu_acpi_power_shift_control(adev,
+ AMDGPU_ATCS_PSC_DEV_STATE_D0,
+ AMDGPU_ATCS_PSC_DRV_STATE_OPR);
+ break;
+ case AMDGPU_SS_DEV_D3:
+ r = amdgpu_acpi_power_shift_control(adev,
+ AMDGPU_ATCS_PSC_DEV_STATE_D3_HOT,
+ AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR);
+ break;
+ case AMDGPU_SS_DRV_UNLOAD:
+ r = amdgpu_acpi_power_shift_control(adev,
+ AMDGPU_ATCS_PSC_DEV_STATE_D0,
+ AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return r;
+}
+
/**
* amdgpu_acpi_event - handle notify events
*
*/
int amdgpu_acpi_init(struct amdgpu_device *adev)
{
- acpi_handle handle, atif_handle;
- struct amdgpu_atif *atif;
- struct amdgpu_atcs *atcs = &adev->atcs;
- int ret;
-
- /* Get the device handle */
- handle = ACPI_HANDLE(&adev->pdev->dev);
-
- if (!adev->bios || !handle)
- return 0;
-
- /* Call the ATCS method */
- ret = amdgpu_atcs_verify_interface(handle, atcs);
- if (ret) {
- DRM_DEBUG_DRIVER("Call to ATCS verify_interface failed: %d\n", ret);
- }
-
- /* Probe for ATIF, and initialize it if found */
- atif_handle = amdgpu_atif_probe_handle(handle);
- if (!atif_handle)
- goto out;
-
- atif = kzalloc(sizeof(*atif), GFP_KERNEL);
- if (!atif) {
- DRM_WARN("Not enough memory to initialize ATIF\n");
- goto out;
- }
- atif->handle = atif_handle;
-
- /* Call the ATIF method */
- ret = amdgpu_atif_verify_interface(atif);
- if (ret) {
- DRM_DEBUG_DRIVER("Call to ATIF verify_interface failed: %d\n", ret);
- kfree(atif);
- goto out;
- }
- adev->atif = atif;
+ struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif;
#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
if (atif->notifications.brightness_change) {
if (amdgpu_device_has_dc_support(adev)) {
#if defined(CONFIG_DRM_AMD_DC)
struct amdgpu_display_manager *dm = &adev->dm;
- atif->bd = dm->backlight_dev;
+ if (dm->backlight_dev[0])
+ atif->bd = dm->backlight_dev[0];
#endif
} else {
struct drm_encoder *tmp;
}
}
#endif
+ adev->acpi_nb.notifier_call = amdgpu_acpi_event;
+ register_acpi_notifier(&adev->acpi_nb);
+
+ return 0;
+}
+
+void amdgpu_acpi_get_backlight_caps(struct amdgpu_dm_backlight_caps *caps)
+{
+ struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif;
+
+ caps->caps_valid = atif->backlight_caps.caps_valid;
+ caps->min_input_signal = atif->backlight_caps.min_input_signal;
+ caps->max_input_signal = atif->backlight_caps.max_input_signal;
+}
+
+/**
+ * amdgpu_acpi_fini - tear down driver acpi support
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Unregisters with the acpi notifier chain (all asics).
+ */
+void amdgpu_acpi_fini(struct amdgpu_device *adev)
+{
+ unregister_acpi_notifier(&adev->acpi_nb);
+}
+
+/**
+ * amdgpu_atif_pci_probe_handle - look up the ATIF handle
+ *
+ * @pdev: pci device
+ *
+ * Look up the ATIF handles (all asics).
+ * Returns true if the handle is found, false if not.
+ */
+static bool amdgpu_atif_pci_probe_handle(struct pci_dev *pdev)
+{
+ char acpi_method_name[255] = { 0 };
+ struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name};
+ acpi_handle dhandle, atif_handle;
+ acpi_status status;
+ int ret;
+
+ dhandle = ACPI_HANDLE(&pdev->dev);
+ if (!dhandle)
+ return false;
+
+ status = acpi_get_handle(dhandle, "ATIF", &atif_handle);
+ if (ACPI_FAILURE(status)) {
+ return false;
+ }
+ amdgpu_acpi_priv.atif.handle = atif_handle;
+ acpi_get_name(amdgpu_acpi_priv.atif.handle, ACPI_FULL_PATHNAME, &buffer);
+ DRM_DEBUG_DRIVER("Found ATIF handle %s\n", acpi_method_name);
+ ret = amdgpu_atif_verify_interface(&amdgpu_acpi_priv.atif);
+ if (ret) {
+ amdgpu_acpi_priv.atif.handle = 0;
+ return false;
+ }
+ return true;
+}
+
+/**
+ * amdgpu_atcs_pci_probe_handle - look up the ATCS handle
+ *
+ * @pdev: pci device
+ *
+ * Look up the ATCS handles (all asics).
+ * Returns true if the handle is found, false if not.
+ */
+static bool amdgpu_atcs_pci_probe_handle(struct pci_dev *pdev)
+{
+ char acpi_method_name[255] = { 0 };
+ struct acpi_buffer buffer = { sizeof(acpi_method_name), acpi_method_name };
+ acpi_handle dhandle, atcs_handle;
+ acpi_status status;
+ int ret;
+
+ dhandle = ACPI_HANDLE(&pdev->dev);
+ if (!dhandle)
+ return false;
+
+ status = acpi_get_handle(dhandle, "ATCS", &atcs_handle);
+ if (ACPI_FAILURE(status)) {
+ return false;
+ }
+ amdgpu_acpi_priv.atcs.handle = atcs_handle;
+ acpi_get_name(amdgpu_acpi_priv.atcs.handle, ACPI_FULL_PATHNAME, &buffer);
+ DRM_DEBUG_DRIVER("Found ATCS handle %s\n", acpi_method_name);
+ ret = amdgpu_atcs_verify_interface(&amdgpu_acpi_priv.atcs);
+ if (ret) {
+ amdgpu_acpi_priv.atcs.handle = 0;
+ return false;
+ }
+ return true;
+}
+
+/*
+ * amdgpu_acpi_detect - detect ACPI ATIF/ATCS methods
+ *
+ * Check if we have the ATIF/ATCS methods and populate
+ * the structures in the driver.
+ */
+void amdgpu_acpi_detect(void)
+{
+ struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif;
+ struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs;
+ struct pci_dev *pdev = NULL;
+ int ret;
+
+ while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
+ if (!atif->handle)
+ amdgpu_atif_pci_probe_handle(pdev);
+ if (!atcs->handle)
+ amdgpu_atcs_pci_probe_handle(pdev);
+ }
+
+ while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
+ if (!atif->handle)
+ amdgpu_atif_pci_probe_handle(pdev);
+ if (!atcs->handle)
+ amdgpu_atcs_pci_probe_handle(pdev);
+ }
if (atif->functions.sbios_requests && !atif->functions.system_params) {
/* XXX check this workraround, if sbios request function is
} else {
atif->backlight_caps.caps_valid = false;
}
-
-out:
- adev->acpi_nb.notifier_call = amdgpu_acpi_event;
- register_acpi_notifier(&adev->acpi_nb);
-
- return ret;
-}
-
-void amdgpu_acpi_get_backlight_caps(struct amdgpu_device *adev,
- struct amdgpu_dm_backlight_caps *caps)
-{
- if (!adev->atif) {
- caps->caps_valid = false;
- return;
- }
- caps->caps_valid = adev->atif->backlight_caps.caps_valid;
- caps->min_input_signal = adev->atif->backlight_caps.min_input_signal;
- caps->max_input_signal = adev->atif->backlight_caps.max_input_signal;
}
/**
- * amdgpu_acpi_fini - tear down driver acpi support
+ * amdgpu_acpi_is_s0ix_active
*
- * @adev: amdgpu_device pointer
- *
- * Unregisters with the acpi notifier chain (all asics).
- */
-void amdgpu_acpi_fini(struct amdgpu_device *adev)
-{
- unregister_acpi_notifier(&adev->acpi_nb);
- kfree(adev->atif);
-}
-
-/**
- * amdgpu_acpi_is_s0ix_supported
+ * @adev: amdgpu_device_pointer
*
* returns true if supported, false if not.
*/
-bool amdgpu_acpi_is_s0ix_supported(struct amdgpu_device *adev)
+bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev)
{
-#if defined(CONFIG_AMD_PMC)
+#if IS_ENABLED(CONFIG_AMD_PMC) && IS_ENABLED(CONFIG_SUSPEND)
if (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0) {
if (adev->flags & AMD_IS_APU)
- return true;
+ return pm_suspend_target_state == PM_SUSPEND_TO_IDLE;
}
#endif
return false;
projects / linux-2.6-microblaze.git / blobdiff