Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Luca Tettamanti | 1466 | 52.56% | 6 | 18.75% |
Alex Deucher | 818 | 29.33% | 12 | 37.50% |
Alberto Milone | 400 | 14.34% | 1 | 3.12% |
Jérôme Glisse | 46 | 1.65% | 3 | 9.38% |
Matthew Garrett | 18 | 0.65% | 1 | 3.12% |
Jean Delvare | 17 | 0.61% | 3 | 9.38% |
Sam Ravnborg | 9 | 0.32% | 1 | 3.12% |
Rafael J. Wysocki | 4 | 0.14% | 1 | 3.12% |
Daniel Vetter | 3 | 0.11% | 1 | 3.12% |
Thomas Zimmermann | 3 | 0.11% | 1 | 3.12% |
Lee Jones | 3 | 0.11% | 1 | 3.12% |
Dave Airlie | 2 | 0.07% | 1 | 3.12% |
Total | 2789 | 32 |
/* * 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. * */ #include <linux/acpi.h> #include <linux/backlight.h> #include <linux/pci.h> #include <linux/pm_runtime.h> #include <linux/power_supply.h> #include <linux/slab.h> #include <acpi/acpi_bus.h> #include <acpi/video.h> #include <drm/drm_probe_helper.h> #include "atom.h" #include "radeon.h" #include "radeon_acpi.h" #include "radeon_pm.h" #if defined(CONFIG_VGA_SWITCHEROO) bool radeon_atpx_dgpu_req_power_for_displays(void); #else static inline bool radeon_atpx_dgpu_req_power_for_displays(void) { return false; } #endif #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; #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; /* Call the ATIF method */ /** * radeon_atif_call - call an ATIF method * * @handle: acpi handle * @function: the ATIF function to execute * @params: ATIF function params * * Executes the requested ATIF function (all asics). * Returns a pointer to the acpi output buffer. */ static union acpi_object *radeon_atif_call(acpi_handle handle, int function, struct acpi_buffer *params) { acpi_status status; union acpi_object atif_arg_elements[2]; struct acpi_object_list atif_arg; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; atif_arg.count = 2; atif_arg.pointer = &atif_arg_elements[0]; atif_arg_elements[0].type = ACPI_TYPE_INTEGER; atif_arg_elements[0].integer.value = function; if (params) { atif_arg_elements[1].type = ACPI_TYPE_BUFFER; atif_arg_elements[1].buffer.length = params->length; atif_arg_elements[1].buffer.pointer = params->pointer; } else { /* We need a second fake parameter */ atif_arg_elements[1].type = ACPI_TYPE_INTEGER; atif_arg_elements[1].integer.value = 0; } status = acpi_evaluate_object(handle, "ATIF", &atif_arg, &buffer); /* Fail only if calling the method fails and ATIF is supported */ if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { DRM_DEBUG_DRIVER("failed to evaluate ATIF got %s\n", acpi_format_exception(status)); kfree(buffer.pointer); return NULL; } return buffer.pointer; } /** * radeon_atif_parse_notification - parse supported notifications * * @n: supported notifications struct * @mask: supported notifications mask from ATIF * * Use the supported notifications mask from ATIF function * ATIF_FUNCTION_VERIFY_INTERFACE to determine what notifications * are supported (all asics). */ static void radeon_atif_parse_notification(struct radeon_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; } /** * radeon_atif_parse_functions - parse supported functions * * @f: supported functions struct * @mask: supported functions mask from ATIF * * Use the supported functions mask from ATIF function * ATIF_FUNCTION_VERIFY_INTERFACE to determine what functions * are supported (all asics). */ static void radeon_atif_parse_functions(struct radeon_atif_functions *f, u32 mask) { 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; } /** * radeon_atif_verify_interface - verify ATIF * * @handle: acpi handle * @atif: radeon atif struct * * Execute the ATIF_FUNCTION_VERIFY_INTERFACE ATIF function * to initialize ATIF and determine what features are supported * (all asics). * returns 0 on success, error on failure. */ static int radeon_atif_verify_interface(acpi_handle handle, struct radeon_atif *atif) { union acpi_object *info; struct atif_verify_interface output; size_t size; int err = 0; info = radeon_atif_call(handle, ATIF_FUNCTION_VERIFY_INTERFACE, NULL); if (!info) return -EIO; memset(&output, 0, sizeof(output)); size = *(u16 *) info->buffer.pointer; if (size < 12) { DRM_INFO("ATIF 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("ATIF version %u\n", output.version); radeon_atif_parse_notification(&atif->notifications, output.notification_mask); radeon_atif_parse_functions(&atif->functions, output.function_bits); out: kfree(info); return err; } /** * radeon_atif_get_notification_params - determine notify configuration * * @handle: acpi handle * @n: atif notification configuration struct * * Execute the ATIF_FUNCTION_GET_SYSTEM_PARAMETERS ATIF function * to determine if a notifier is used and if so which one * (all asics). This is either Notify(VGA, 0x81) or Notify(VGA, n) * where n is specified in the result if a notifier is used. * Returns 0 on success, error on failure. */ static int radeon_atif_get_notification_params(acpi_handle handle, struct radeon_atif_notification_cfg *n) { union acpi_object *info; struct atif_system_params params; size_t size; int err = 0; info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_PARAMETERS, NULL); if (!info) { err = -EIO; goto out; } size = *(u16 *) info->buffer.pointer; if (size < 10) { err = -EINVAL; goto out; } memset(¶ms, 0, sizeof(params)); size = min(sizeof(params), size); memcpy(¶ms, info->buffer.pointer, size); DRM_DEBUG_DRIVER("SYSTEM_PARAMS: mask = %#x, flags = %#x\n", params.flags, params.valid_mask); params.flags = params.flags & params.valid_mask; if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_NONE) { n->enabled = false; n->command_code = 0; } else if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_81) { n->enabled = true; n->command_code = 0x81; } else { if (size < 11) { err = -EINVAL; goto out; } n->enabled = true; n->command_code = params.command_code; } out: DRM_DEBUG_DRIVER("Notification %s, command code = %#x\n", (n->enabled ? "enabled" : "disabled"), n->command_code); kfree(info); return err; } /** * radeon_atif_get_sbios_requests - get requested sbios event * * @handle: acpi handle * @req: atif sbios request struct * * Execute the ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS ATIF function * to determine what requests the sbios is making to the driver * (all asics). * Returns 0 on success, error on failure. */ static int radeon_atif_get_sbios_requests(acpi_handle handle, struct atif_sbios_requests *req) { union acpi_object *info; size_t size; int count = 0; info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS, NULL); if (!info) return -EIO; size = *(u16 *)info->buffer.pointer; if (size < 0xd) { count = -EINVAL; goto out; } memset(req, 0, sizeof(*req)); size = min(sizeof(*req), size); memcpy(req, info->buffer.pointer, size); DRM_DEBUG_DRIVER("SBIOS pending requests: %#x\n", req->pending); count = hweight32(req->pending); out: kfree(info); return count; } /** * radeon_atif_handler - handle ATIF notify requests * * @rdev: radeon_device pointer * @event: atif sbios request struct * * Checks the acpi event and if it matches an atif event, * handles it. * Returns NOTIFY code */ static int radeon_atif_handler(struct radeon_device *rdev, struct acpi_bus_event *event) { struct radeon_atif *atif = &rdev->atif; struct atif_sbios_requests req; acpi_handle handle; int count; DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n", event->device_class, event->type); if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) return NOTIFY_DONE; if (!atif->notification_cfg.enabled || event->type != atif->notification_cfg.command_code) /* Not our event */ return NOTIFY_DONE; /* Check pending SBIOS requests */ handle = ACPI_HANDLE(&rdev->pdev->dev); count = radeon_atif_get_sbios_requests(handle, &req); if (count <= 0) return NOTIFY_DONE; DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count); if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) { struct radeon_encoder *enc = atif->encoder_for_bl; if (enc) { DRM_DEBUG_DRIVER("Changing brightness to %d\n", req.backlight_level); radeon_set_backlight_level(rdev, enc, req.backlight_level); if (rdev->is_atom_bios) { struct radeon_encoder_atom_dig *dig = enc->enc_priv; backlight_force_update(dig->bl_dev, BACKLIGHT_UPDATE_HOTKEY); } else { struct radeon_encoder_lvds *dig = enc->enc_priv; backlight_force_update(dig->bl_dev, BACKLIGHT_UPDATE_HOTKEY); } } } if (req.pending & ATIF_DGPU_DISPLAY_EVENT) { if ((rdev->flags & RADEON_IS_PX) && radeon_atpx_dgpu_req_power_for_displays()) { pm_runtime_get_sync(rdev->ddev->dev); /* Just fire off a uevent and let userspace tell us what to do */ drm_helper_hpd_irq_event(rdev->ddev); pm_runtime_mark_last_busy(rdev->ddev->dev); pm_runtime_put_autosuspend(rdev->ddev->dev); } } /* TODO: check other events */ /* We've handled the event, stop the notifier chain. The ACPI interface * overloads ACPI_VIDEO_NOTIFY_PROBE, we don't want to send that to * userspace if the event was generated only to signal a SBIOS * request. */ return NOTIFY_BAD; } /* Call the ATCS method */ /** * radeon_atcs_call - call an ATCS method * * @handle: acpi handle * @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 *radeon_atcs_call(acpi_handle handle, int function, struct acpi_buffer *params) { acpi_status status; union acpi_object atcs_arg_elements[2]; struct acpi_object_list atcs_arg; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; atcs_arg.count = 2; atcs_arg.pointer = &atcs_arg_elements[0]; atcs_arg_elements[0].type = ACPI_TYPE_INTEGER; atcs_arg_elements[0].integer.value = function; if (params) { atcs_arg_elements[1].type = ACPI_TYPE_BUFFER; atcs_arg_elements[1].buffer.length = params->length; atcs_arg_elements[1].buffer.pointer = params->pointer; } else { /* We need a second fake parameter */ atcs_arg_elements[1].type = ACPI_TYPE_INTEGER; atcs_arg_elements[1].integer.value = 0; } status = acpi_evaluate_object(handle, "ATCS", &atcs_arg, &buffer); /* Fail only if calling the method fails and ATIF is supported */ if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { DRM_DEBUG_DRIVER("failed to evaluate ATCS got %s\n", acpi_format_exception(status)); kfree(buffer.pointer); return NULL; } return buffer.pointer; } /** * 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). */ static void radeon_atcs_parse_functions(struct radeon_atcs_functions *f, u32 mask) { 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 (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); }
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