| /* |
| * Copyright 2008 Intel Corporation <hong.liu@intel.com> |
| * Copyright 2008 Red Hat <mjg@redhat.com> |
| * |
| * 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, sub license, 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 (including the |
| * next paragraph) 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 |
| * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS 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. |
| * |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/acpi.h> |
| #include <acpi/video.h> |
| |
| #include <drm/drmP.h> |
| #include <drm/i915_drm.h> |
| #include "i915_drv.h" |
| #include "intel_drv.h" |
| |
| #define PCI_ASLE 0xe4 |
| #define PCI_ASLS 0xfc |
| #define PCI_SWSCI 0xe8 |
| #define PCI_SWSCI_SCISEL (1 << 15) |
| #define PCI_SWSCI_GSSCIE (1 << 0) |
| |
| #define OPREGION_HEADER_OFFSET 0 |
| #define OPREGION_ACPI_OFFSET 0x100 |
| #define ACPI_CLID 0x01ac /* current lid state indicator */ |
| #define ACPI_CDCK 0x01b0 /* current docking state indicator */ |
| #define OPREGION_SWSCI_OFFSET 0x200 |
| #define OPREGION_ASLE_OFFSET 0x300 |
| #define OPREGION_VBT_OFFSET 0x400 |
| |
| #define OPREGION_SIGNATURE "IntelGraphicsMem" |
| #define MBOX_ACPI (1<<0) |
| #define MBOX_SWSCI (1<<1) |
| #define MBOX_ASLE (1<<2) |
| |
| struct opregion_header { |
| u8 signature[16]; |
| u32 size; |
| u32 opregion_ver; |
| u8 bios_ver[32]; |
| u8 vbios_ver[16]; |
| u8 driver_ver[16]; |
| u32 mboxes; |
| u8 reserved[164]; |
| } __packed; |
| |
| /* OpRegion mailbox #1: public ACPI methods */ |
| struct opregion_acpi { |
| u32 drdy; /* driver readiness */ |
| u32 csts; /* notification status */ |
| u32 cevt; /* current event */ |
| u8 rsvd1[20]; |
| u32 didl[8]; /* supported display devices ID list */ |
| u32 cpdl[8]; /* currently presented display list */ |
| u32 cadl[8]; /* currently active display list */ |
| u32 nadl[8]; /* next active devices list */ |
| u32 aslp; /* ASL sleep time-out */ |
| u32 tidx; /* toggle table index */ |
| u32 chpd; /* current hotplug enable indicator */ |
| u32 clid; /* current lid state*/ |
| u32 cdck; /* current docking state */ |
| u32 sxsw; /* Sx state resume */ |
| u32 evts; /* ASL supported events */ |
| u32 cnot; /* current OS notification */ |
| u32 nrdy; /* driver status */ |
| u8 rsvd2[60]; |
| } __packed; |
| |
| /* OpRegion mailbox #2: SWSCI */ |
| struct opregion_swsci { |
| u32 scic; /* SWSCI command|status|data */ |
| u32 parm; /* command parameters */ |
| u32 dslp; /* driver sleep time-out */ |
| u8 rsvd[244]; |
| } __packed; |
| |
| /* OpRegion mailbox #3: ASLE */ |
| struct opregion_asle { |
| u32 ardy; /* driver readiness */ |
| u32 aslc; /* ASLE interrupt command */ |
| u32 tche; /* technology enabled indicator */ |
| u32 alsi; /* current ALS illuminance reading */ |
| u32 bclp; /* backlight brightness to set */ |
| u32 pfit; /* panel fitting state */ |
| u32 cblv; /* current brightness level */ |
| u16 bclm[20]; /* backlight level duty cycle mapping table */ |
| u32 cpfm; /* current panel fitting mode */ |
| u32 epfm; /* enabled panel fitting modes */ |
| u8 plut[74]; /* panel LUT and identifier */ |
| u32 pfmb; /* PWM freq and min brightness */ |
| u32 cddv; /* color correction default values */ |
| u32 pcft; /* power conservation features */ |
| u32 srot; /* supported rotation angles */ |
| u32 iuer; /* IUER events */ |
| u8 rsvd[86]; |
| } __packed; |
| |
| /* Driver readiness indicator */ |
| #define ASLE_ARDY_READY (1 << 0) |
| #define ASLE_ARDY_NOT_READY (0 << 0) |
| |
| /* ASLE Interrupt Command (ASLC) bits */ |
| #define ASLC_SET_ALS_ILLUM (1 << 0) |
| #define ASLC_SET_BACKLIGHT (1 << 1) |
| #define ASLC_SET_PFIT (1 << 2) |
| #define ASLC_SET_PWM_FREQ (1 << 3) |
| #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) |
| #define ASLC_BUTTON_ARRAY (1 << 5) |
| #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) |
| #define ASLC_DOCKING_INDICATOR (1 << 7) |
| #define ASLC_ISCT_STATE_CHANGE (1 << 8) |
| #define ASLC_REQ_MSK 0x1ff |
| /* response bits */ |
| #define ASLC_ALS_ILLUM_FAILED (1 << 10) |
| #define ASLC_BACKLIGHT_FAILED (1 << 12) |
| #define ASLC_PFIT_FAILED (1 << 14) |
| #define ASLC_PWM_FREQ_FAILED (1 << 16) |
| #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) |
| #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) |
| #define ASLC_CONVERTIBLE_FAILED (1 << 22) |
| #define ASLC_DOCKING_FAILED (1 << 24) |
| #define ASLC_ISCT_STATE_FAILED (1 << 26) |
| |
| /* Technology enabled indicator */ |
| #define ASLE_TCHE_ALS_EN (1 << 0) |
| #define ASLE_TCHE_BLC_EN (1 << 1) |
| #define ASLE_TCHE_PFIT_EN (1 << 2) |
| #define ASLE_TCHE_PFMB_EN (1 << 3) |
| |
| /* ASLE backlight brightness to set */ |
| #define ASLE_BCLP_VALID (1<<31) |
| #define ASLE_BCLP_MSK (~(1<<31)) |
| |
| /* ASLE panel fitting request */ |
| #define ASLE_PFIT_VALID (1<<31) |
| #define ASLE_PFIT_CENTER (1<<0) |
| #define ASLE_PFIT_STRETCH_TEXT (1<<1) |
| #define ASLE_PFIT_STRETCH_GFX (1<<2) |
| |
| /* PWM frequency and minimum brightness */ |
| #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) |
| #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) |
| #define ASLE_PFMB_PWM_MASK (0x7ffffe00) |
| #define ASLE_PFMB_PWM_VALID (1<<31) |
| |
| #define ASLE_CBLV_VALID (1<<31) |
| |
| /* IUER */ |
| #define ASLE_IUER_DOCKING (1 << 7) |
| #define ASLE_IUER_CONVERTIBLE (1 << 6) |
| #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) |
| #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) |
| #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) |
| #define ASLE_IUER_WINDOWS_BTN (1 << 1) |
| #define ASLE_IUER_POWER_BTN (1 << 0) |
| |
| /* Software System Control Interrupt (SWSCI) */ |
| #define SWSCI_SCIC_INDICATOR (1 << 0) |
| #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 |
| #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) |
| #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 |
| #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) |
| #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 |
| #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) |
| #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 |
| #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) |
| #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 |
| |
| #define SWSCI_FUNCTION_CODE(main, sub) \ |
| ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ |
| (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) |
| |
| /* SWSCI: Get BIOS Data (GBDA) */ |
| #define SWSCI_GBDA 4 |
| #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) |
| #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) |
| #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) |
| #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) |
| #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) |
| #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) |
| #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) |
| |
| /* SWSCI: System BIOS Callbacks (SBCB) */ |
| #define SWSCI_SBCB 6 |
| #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) |
| #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) |
| #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) |
| #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) |
| #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) |
| #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) |
| #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) |
| #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) |
| #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) |
| #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) |
| #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) |
| #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) |
| #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) |
| #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) |
| #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) |
| #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) |
| |
| #define ACPI_OTHER_OUTPUT (0<<8) |
| #define ACPI_VGA_OUTPUT (1<<8) |
| #define ACPI_TV_OUTPUT (2<<8) |
| #define ACPI_DIGITAL_OUTPUT (3<<8) |
| #define ACPI_LVDS_OUTPUT (4<<8) |
| |
| #define MAX_DSLP 1500 |
| |
| #ifdef CONFIG_ACPI |
| static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct opregion_swsci __iomem *swsci = dev_priv->opregion.swsci; |
| u32 main_function, sub_function, scic; |
| u16 pci_swsci; |
| u32 dslp; |
| |
| if (!swsci) |
| return -ENODEV; |
| |
| main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> |
| SWSCI_SCIC_MAIN_FUNCTION_SHIFT; |
| sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> |
| SWSCI_SCIC_SUB_FUNCTION_SHIFT; |
| |
| /* Check if we can call the function. See swsci_setup for details. */ |
| if (main_function == SWSCI_SBCB) { |
| if ((dev_priv->opregion.swsci_sbcb_sub_functions & |
| (1 << sub_function)) == 0) |
| return -EINVAL; |
| } else if (main_function == SWSCI_GBDA) { |
| if ((dev_priv->opregion.swsci_gbda_sub_functions & |
| (1 << sub_function)) == 0) |
| return -EINVAL; |
| } |
| |
| /* Driver sleep timeout in ms. */ |
| dslp = ioread32(&swsci->dslp); |
| if (!dslp) { |
| /* The spec says 2ms should be the default, but it's too small |
| * for some machines. */ |
| dslp = 50; |
| } else if (dslp > MAX_DSLP) { |
| /* Hey bios, trust must be earned. */ |
| DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " |
| "using %u ms instead\n", dslp, MAX_DSLP); |
| dslp = MAX_DSLP; |
| } |
| |
| /* The spec tells us to do this, but we are the only user... */ |
| scic = ioread32(&swsci->scic); |
| if (scic & SWSCI_SCIC_INDICATOR) { |
| DRM_DEBUG_DRIVER("SWSCI request already in progress\n"); |
| return -EBUSY; |
| } |
| |
| scic = function | SWSCI_SCIC_INDICATOR; |
| |
| iowrite32(parm, &swsci->parm); |
| iowrite32(scic, &swsci->scic); |
| |
| /* Ensure SCI event is selected and event trigger is cleared. */ |
| pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci); |
| if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) { |
| pci_swsci |= PCI_SWSCI_SCISEL; |
| pci_swsci &= ~PCI_SWSCI_GSSCIE; |
| pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); |
| } |
| |
| /* Use event trigger to tell bios to check the mail. */ |
| pci_swsci |= PCI_SWSCI_GSSCIE; |
| pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); |
| |
| /* Poll for the result. */ |
| #define C (((scic = ioread32(&swsci->scic)) & SWSCI_SCIC_INDICATOR) == 0) |
| if (wait_for(C, dslp)) { |
| DRM_DEBUG_DRIVER("SWSCI request timed out\n"); |
| return -ETIMEDOUT; |
| } |
| |
| scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> |
| SWSCI_SCIC_EXIT_STATUS_SHIFT; |
| |
| /* Note: scic == 0 is an error! */ |
| if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { |
| DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic); |
| return -EIO; |
| } |
| |
| if (parm_out) |
| *parm_out = ioread32(&swsci->parm); |
| |
| return 0; |
| |
| #undef C |
| } |
| |
| #define DISPLAY_TYPE_CRT 0 |
| #define DISPLAY_TYPE_TV 1 |
| #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 |
| #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 |
| |
| int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, |
| bool enable) |
| { |
| struct drm_device *dev = intel_encoder->base.dev; |
| u32 parm = 0; |
| u32 type = 0; |
| u32 port; |
| |
| /* don't care about old stuff for now */ |
| if (!HAS_DDI(dev)) |
| return 0; |
| |
| port = intel_ddi_get_encoder_port(intel_encoder); |
| if (port == PORT_E) { |
| port = 0; |
| } else { |
| parm |= 1 << port; |
| port++; |
| } |
| |
| if (!enable) |
| parm |= 4 << 8; |
| |
| switch (intel_encoder->type) { |
| case INTEL_OUTPUT_ANALOG: |
| type = DISPLAY_TYPE_CRT; |
| break; |
| case INTEL_OUTPUT_UNKNOWN: |
| case INTEL_OUTPUT_DISPLAYPORT: |
| case INTEL_OUTPUT_HDMI: |
| case INTEL_OUTPUT_DP_MST: |
| type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; |
| break; |
| case INTEL_OUTPUT_EDP: |
| type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; |
| break; |
| default: |
| WARN_ONCE(1, "unsupported intel_encoder type %d\n", |
| intel_encoder->type); |
| return -EINVAL; |
| } |
| |
| parm |= type << (16 + port * 3); |
| |
| return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); |
| } |
| |
| static const struct { |
| pci_power_t pci_power_state; |
| u32 parm; |
| } power_state_map[] = { |
| { PCI_D0, 0x00 }, |
| { PCI_D1, 0x01 }, |
| { PCI_D2, 0x02 }, |
| { PCI_D3hot, 0x04 }, |
| { PCI_D3cold, 0x04 }, |
| }; |
| |
| int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) |
| { |
| int i; |
| |
| if (!HAS_DDI(dev)) |
| return 0; |
| |
| for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { |
| if (state == power_state_map[i].pci_power_state) |
| return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE, |
| power_state_map[i].parm, NULL); |
| } |
| |
| return -EINVAL; |
| } |
| |
| static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_connector *intel_connector; |
| struct opregion_asle __iomem *asle = dev_priv->opregion.asle; |
| |
| DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); |
| |
| /* |
| * If the acpi_video interface is not supposed to be used, don't |
| * bother processing backlight level change requests from firmware. |
| */ |
| if (!acpi_video_verify_backlight_support()) { |
| DRM_DEBUG_KMS("opregion backlight request ignored\n"); |
| return 0; |
| } |
| |
| if (!(bclp & ASLE_BCLP_VALID)) |
| return ASLC_BACKLIGHT_FAILED; |
| |
| bclp &= ASLE_BCLP_MSK; |
| if (bclp > 255) |
| return ASLC_BACKLIGHT_FAILED; |
| |
| drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
| |
| /* |
| * Update backlight on all connectors that support backlight (usually |
| * only one). |
| */ |
| DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); |
| list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) |
| intel_panel_set_backlight_acpi(intel_connector, bclp, 255); |
| iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv); |
| |
| drm_modeset_unlock(&dev->mode_config.connection_mutex); |
| |
| |
| return 0; |
| } |
| |
| static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) |
| { |
| /* alsi is the current ALS reading in lux. 0 indicates below sensor |
| range, 0xffff indicates above sensor range. 1-0xfffe are valid */ |
| DRM_DEBUG_DRIVER("Illum is not supported\n"); |
| return ASLC_ALS_ILLUM_FAILED; |
| } |
| |
| static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) |
| { |
| DRM_DEBUG_DRIVER("PWM freq is not supported\n"); |
| return ASLC_PWM_FREQ_FAILED; |
| } |
| |
| static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) |
| { |
| /* Panel fitting is currently controlled by the X code, so this is a |
| noop until modesetting support works fully */ |
| DRM_DEBUG_DRIVER("Pfit is not supported\n"); |
| return ASLC_PFIT_FAILED; |
| } |
| |
| static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot) |
| { |
| DRM_DEBUG_DRIVER("SROT is not supported\n"); |
| return ASLC_ROTATION_ANGLES_FAILED; |
| } |
| |
| static u32 asle_set_button_array(struct drm_device *dev, u32 iuer) |
| { |
| if (!iuer) |
| DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); |
| if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) |
| DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); |
| if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) |
| DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); |
| if (iuer & ASLE_IUER_VOLUME_UP_BTN) |
| DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); |
| if (iuer & ASLE_IUER_WINDOWS_BTN) |
| DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); |
| if (iuer & ASLE_IUER_POWER_BTN) |
| DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); |
| |
| return ASLC_BUTTON_ARRAY_FAILED; |
| } |
| |
| static u32 asle_set_convertible(struct drm_device *dev, u32 iuer) |
| { |
| if (iuer & ASLE_IUER_CONVERTIBLE) |
| DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); |
| else |
| DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); |
| |
| return ASLC_CONVERTIBLE_FAILED; |
| } |
| |
| static u32 asle_set_docking(struct drm_device *dev, u32 iuer) |
| { |
| if (iuer & ASLE_IUER_DOCKING) |
| DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); |
| else |
| DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); |
| |
| return ASLC_DOCKING_FAILED; |
| } |
| |
| static u32 asle_isct_state(struct drm_device *dev) |
| { |
| DRM_DEBUG_DRIVER("ISCT is not supported\n"); |
| return ASLC_ISCT_STATE_FAILED; |
| } |
| |
| static void asle_work(struct work_struct *work) |
| { |
| struct intel_opregion *opregion = |
| container_of(work, struct intel_opregion, asle_work); |
| struct drm_i915_private *dev_priv = |
| container_of(opregion, struct drm_i915_private, opregion); |
| struct drm_device *dev = dev_priv->dev; |
| struct opregion_asle __iomem *asle = dev_priv->opregion.asle; |
| u32 aslc_stat = 0; |
| u32 aslc_req; |
| |
| if (!asle) |
| return; |
| |
| aslc_req = ioread32(&asle->aslc); |
| |
| if (!(aslc_req & ASLC_REQ_MSK)) { |
| DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", |
| aslc_req); |
| return; |
| } |
| |
| if (aslc_req & ASLC_SET_ALS_ILLUM) |
| aslc_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi)); |
| |
| if (aslc_req & ASLC_SET_BACKLIGHT) |
| aslc_stat |= asle_set_backlight(dev, ioread32(&asle->bclp)); |
| |
| if (aslc_req & ASLC_SET_PFIT) |
| aslc_stat |= asle_set_pfit(dev, ioread32(&asle->pfit)); |
| |
| if (aslc_req & ASLC_SET_PWM_FREQ) |
| aslc_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb)); |
| |
| if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) |
| aslc_stat |= asle_set_supported_rotation_angles(dev, |
| ioread32(&asle->srot)); |
| |
| if (aslc_req & ASLC_BUTTON_ARRAY) |
| aslc_stat |= asle_set_button_array(dev, ioread32(&asle->iuer)); |
| |
| if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) |
| aslc_stat |= asle_set_convertible(dev, ioread32(&asle->iuer)); |
| |
| if (aslc_req & ASLC_DOCKING_INDICATOR) |
| aslc_stat |= asle_set_docking(dev, ioread32(&asle->iuer)); |
| |
| if (aslc_req & ASLC_ISCT_STATE_CHANGE) |
| aslc_stat |= asle_isct_state(dev); |
| |
| iowrite32(aslc_stat, &asle->aslc); |
| } |
| |
| void intel_opregion_asle_intr(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| |
| if (dev_priv->opregion.asle) |
| schedule_work(&dev_priv->opregion.asle_work); |
| } |
| |
| #define ACPI_EV_DISPLAY_SWITCH (1<<0) |
| #define ACPI_EV_LID (1<<1) |
| #define ACPI_EV_DOCK (1<<2) |
| |
| static struct intel_opregion *system_opregion; |
| |
| static int intel_opregion_video_event(struct notifier_block *nb, |
| unsigned long val, void *data) |
| { |
| /* The only video events relevant to opregion are 0x80. These indicate |
| either a docking event, lid switch or display switch request. In |
| Linux, these are handled by the dock, button and video drivers. |
| */ |
| |
| struct opregion_acpi __iomem *acpi; |
| struct acpi_bus_event *event = data; |
| int ret = NOTIFY_OK; |
| |
| if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) |
| return NOTIFY_DONE; |
| |
| if (!system_opregion) |
| return NOTIFY_DONE; |
| |
| acpi = system_opregion->acpi; |
| |
| if (event->type == 0x80 && |
| (ioread32(&acpi->cevt) & 1) == 0) |
| ret = NOTIFY_BAD; |
| |
| iowrite32(0, &acpi->csts); |
| |
| return ret; |
| } |
| |
| static struct notifier_block intel_opregion_notifier = { |
| .notifier_call = intel_opregion_video_event, |
| }; |
| |
| /* |
| * Initialise the DIDL field in opregion. This passes a list of devices to |
| * the firmware. Values are defined by section B.4.2 of the ACPI specification |
| * (version 3) |
| */ |
| |
| static void intel_didl_outputs(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_opregion *opregion = &dev_priv->opregion; |
| struct drm_connector *connector; |
| acpi_handle handle; |
| struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL; |
| unsigned long long device_id; |
| acpi_status status; |
| u32 temp; |
| int i = 0; |
| |
| handle = ACPI_HANDLE(&dev->pdev->dev); |
| if (!handle || acpi_bus_get_device(handle, &acpi_dev)) |
| return; |
| |
| if (acpi_is_video_device(handle)) |
| acpi_video_bus = acpi_dev; |
| else { |
| list_for_each_entry(acpi_cdev, &acpi_dev->children, node) { |
| if (acpi_is_video_device(acpi_cdev->handle)) { |
| acpi_video_bus = acpi_cdev; |
| break; |
| } |
| } |
| } |
| |
| if (!acpi_video_bus) { |
| pr_warn("No ACPI video bus found\n"); |
| return; |
| } |
| |
| list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) { |
| if (i >= 8) { |
| dev_dbg(&dev->pdev->dev, |
| "More than 8 outputs detected via ACPI\n"); |
| return; |
| } |
| status = |
| acpi_evaluate_integer(acpi_cdev->handle, "_ADR", |
| NULL, &device_id); |
| if (ACPI_SUCCESS(status)) { |
| if (!device_id) |
| goto blind_set; |
| iowrite32((u32)(device_id & 0x0f0f), |
| &opregion->acpi->didl[i]); |
| i++; |
| } |
| } |
| |
| end: |
| /* If fewer than 8 outputs, the list must be null terminated */ |
| if (i < 8) |
| iowrite32(0, &opregion->acpi->didl[i]); |
| return; |
| |
| blind_set: |
| i = 0; |
| list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| int output_type = ACPI_OTHER_OUTPUT; |
| if (i >= 8) { |
| dev_dbg(&dev->pdev->dev, |
| "More than 8 outputs in connector list\n"); |
| return; |
| } |
| switch (connector->connector_type) { |
| case DRM_MODE_CONNECTOR_VGA: |
| case DRM_MODE_CONNECTOR_DVIA: |
| output_type = ACPI_VGA_OUTPUT; |
| break; |
| case DRM_MODE_CONNECTOR_Composite: |
| case DRM_MODE_CONNECTOR_SVIDEO: |
| case DRM_MODE_CONNECTOR_Component: |
| case DRM_MODE_CONNECTOR_9PinDIN: |
| output_type = ACPI_TV_OUTPUT; |
| break; |
| case DRM_MODE_CONNECTOR_DVII: |
| case DRM_MODE_CONNECTOR_DVID: |
| case DRM_MODE_CONNECTOR_DisplayPort: |
| case DRM_MODE_CONNECTOR_HDMIA: |
| case DRM_MODE_CONNECTOR_HDMIB: |
| output_type = ACPI_DIGITAL_OUTPUT; |
| break; |
| case DRM_MODE_CONNECTOR_LVDS: |
| output_type = ACPI_LVDS_OUTPUT; |
| break; |
| } |
| temp = ioread32(&opregion->acpi->didl[i]); |
| iowrite32(temp | (1<<31) | output_type | i, |
| &opregion->acpi->didl[i]); |
| i++; |
| } |
| goto end; |
| } |
| |
| static void intel_setup_cadls(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_opregion *opregion = &dev_priv->opregion; |
| int i = 0; |
| u32 disp_id; |
| |
| /* Initialize the CADL field by duplicating the DIDL values. |
| * Technically, this is not always correct as display outputs may exist, |
| * but not active. This initialization is necessary for some Clevo |
| * laptops that check this field before processing the brightness and |
| * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if |
| * there are less than eight devices. */ |
| do { |
| disp_id = ioread32(&opregion->acpi->didl[i]); |
| iowrite32(disp_id, &opregion->acpi->cadl[i]); |
| } while (++i < 8 && disp_id != 0); |
| } |
| |
| void intel_opregion_init(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_opregion *opregion = &dev_priv->opregion; |
| |
| if (!opregion->header) |
| return; |
| |
| if (opregion->acpi) { |
| if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
| intel_didl_outputs(dev); |
| intel_setup_cadls(dev); |
| } |
| |
| /* Notify BIOS we are ready to handle ACPI video ext notifs. |
| * Right now, all the events are handled by the ACPI video module. |
| * We don't actually need to do anything with them. */ |
| iowrite32(0, &opregion->acpi->csts); |
| iowrite32(1, &opregion->acpi->drdy); |
| |
| system_opregion = opregion; |
| register_acpi_notifier(&intel_opregion_notifier); |
| } |
| |
| if (opregion->asle) { |
| iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche); |
| iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy); |
| } |
| } |
| |
| void intel_opregion_fini(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_opregion *opregion = &dev_priv->opregion; |
| |
| if (!opregion->header) |
| return; |
| |
| if (opregion->asle) |
| iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); |
| |
| cancel_work_sync(&dev_priv->opregion.asle_work); |
| |
| if (opregion->acpi) { |
| iowrite32(0, &opregion->acpi->drdy); |
| |
| system_opregion = NULL; |
| unregister_acpi_notifier(&intel_opregion_notifier); |
| } |
| |
| /* just clear all opregion memory pointers now */ |
| iounmap(opregion->header); |
| opregion->header = NULL; |
| opregion->acpi = NULL; |
| opregion->swsci = NULL; |
| opregion->asle = NULL; |
| opregion->vbt = NULL; |
| opregion->lid_state = NULL; |
| } |
| |
| static void swsci_setup(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_opregion *opregion = &dev_priv->opregion; |
| bool requested_callbacks = false; |
| u32 tmp; |
| |
| /* Sub-function code 0 is okay, let's allow them. */ |
| opregion->swsci_gbda_sub_functions = 1; |
| opregion->swsci_sbcb_sub_functions = 1; |
| |
| /* We use GBDA to ask for supported GBDA calls. */ |
| if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { |
| /* make the bits match the sub-function codes */ |
| tmp <<= 1; |
| opregion->swsci_gbda_sub_functions |= tmp; |
| } |
| |
| /* |
| * We also use GBDA to ask for _requested_ SBCB callbacks. The driver |
| * must not call interfaces that are not specifically requested by the |
| * bios. |
| */ |
| if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { |
| /* here, the bits already match sub-function codes */ |
| opregion->swsci_sbcb_sub_functions |= tmp; |
| requested_callbacks = true; |
| } |
| |
| /* |
| * But we use SBCB to ask for _supported_ SBCB calls. This does not mean |
| * the callback is _requested_. But we still can't call interfaces that |
| * are not requested. |
| */ |
| if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { |
| /* make the bits match the sub-function codes */ |
| u32 low = tmp & 0x7ff; |
| u32 high = tmp & ~0xfff; /* bit 11 is reserved */ |
| tmp = (high << 4) | (low << 1) | 1; |
| |
| /* best guess what to do with supported wrt requested */ |
| if (requested_callbacks) { |
| u32 req = opregion->swsci_sbcb_sub_functions; |
| if ((req & tmp) != req) |
| DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); |
| /* XXX: for now, trust the requested callbacks */ |
| /* opregion->swsci_sbcb_sub_functions &= tmp; */ |
| } else { |
| opregion->swsci_sbcb_sub_functions |= tmp; |
| } |
| } |
| |
| DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", |
| opregion->swsci_gbda_sub_functions, |
| opregion->swsci_sbcb_sub_functions); |
| } |
| #else /* CONFIG_ACPI */ |
| static inline void swsci_setup(struct drm_device *dev) {} |
| #endif /* CONFIG_ACPI */ |
| |
| int intel_opregion_setup(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_opregion *opregion = &dev_priv->opregion; |
| void __iomem *base; |
| u32 asls, mboxes; |
| char buf[sizeof(OPREGION_SIGNATURE)]; |
| int err = 0; |
| |
| pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); |
| DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); |
| if (asls == 0) { |
| DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); |
| return -ENOTSUPP; |
| } |
| |
| #ifdef CONFIG_ACPI |
| INIT_WORK(&opregion->asle_work, asle_work); |
| #endif |
| |
| base = acpi_os_ioremap(asls, OPREGION_SIZE); |
| if (!base) |
| return -ENOMEM; |
| |
| memcpy_fromio(buf, base, sizeof(buf)); |
| |
| if (memcmp(buf, OPREGION_SIGNATURE, 16)) { |
| DRM_DEBUG_DRIVER("opregion signature mismatch\n"); |
| err = -EINVAL; |
| goto err_out; |
| } |
| opregion->header = base; |
| opregion->vbt = base + OPREGION_VBT_OFFSET; |
| |
| opregion->lid_state = base + ACPI_CLID; |
| |
| mboxes = ioread32(&opregion->header->mboxes); |
| if (mboxes & MBOX_ACPI) { |
| DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); |
| opregion->acpi = base + OPREGION_ACPI_OFFSET; |
| } |
| |
| if (mboxes & MBOX_SWSCI) { |
| DRM_DEBUG_DRIVER("SWSCI supported\n"); |
| opregion->swsci = base + OPREGION_SWSCI_OFFSET; |
| swsci_setup(dev); |
| } |
| if (mboxes & MBOX_ASLE) { |
| DRM_DEBUG_DRIVER("ASLE supported\n"); |
| opregion->asle = base + OPREGION_ASLE_OFFSET; |
| |
| iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); |
| } |
| |
| return 0; |
| |
| err_out: |
| iounmap(base); |
| return err; |
| } |