diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_opregion.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_opregion.c | 1151 |
1 files changed, 1151 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c new file mode 100644 index 000000000..abff2d6ce --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_opregion.c @@ -0,0 +1,1151 @@ +/* + * 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. + * + */ + +#include <linux/acpi.h> +#include <linux/dmi.h> +#include <linux/firmware.h> +#include <acpi/video.h> + +#include "display/intel_panel.h" + +#include "i915_drv.h" +#include "intel_acpi.h" +#include "intel_display_types.h" +#include "intel_opregion.h" + +#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_ASLE_EXT_OFFSET 0x1C00 + +#define OPREGION_SIGNATURE "IntelGraphicsMem" +#define MBOX_ACPI (1<<0) +#define MBOX_SWSCI (1<<1) +#define MBOX_ASLE (1<<2) +#define MBOX_ASLE_EXT (1<<4) + +struct opregion_header { + u8 signature[16]; + u32 size; + struct { + u8 rsvd; + u8 revision; + u8 minor; + u8 major; + } __packed over; + u8 bios_ver[32]; + u8 vbios_ver[16]; + u8 driver_ver[16]; + u32 mboxes; + u32 driver_model; + u32 pcon; + u8 dver[32]; + u8 rsvd[124]; +} __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 */ + u32 did2[7]; /* extended supported display devices ID list */ + u32 cpd2[7]; /* extended attached display devices list */ + u8 rsvd2[4]; +} __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 */ + u64 fdss; + u32 fdsp; + u32 stat; + u64 rvda; /* Physical (2.0) or relative from opregion (2.1+) + * address of raw VBT data. */ + u32 rvds; /* Size of raw vbt data */ + u8 rsvd[58]; +} __packed; + +/* OpRegion mailbox #5: ASLE ext */ +struct opregion_asle_ext { + u32 phed; /* Panel Header */ + u8 bddc[256]; /* Panel EDID */ + u8 rsvd[764]; +} __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 MAX_DSLP 1500 + +static int swsci(struct drm_i915_private *dev_priv, + u32 function, u32 parm, u32 *parm_out) +{ + struct opregion_swsci *swsci = dev_priv->opregion.swsci; + struct pci_dev *pdev = dev_priv->drm.pdev; + u32 main_function, sub_function, scic; + u16 swsci_val; + 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 = 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 = swsci->scic; + if (scic & SWSCI_SCIC_INDICATOR) { + drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n"); + return -EBUSY; + } + + scic = function | SWSCI_SCIC_INDICATOR; + + swsci->parm = parm; + swsci->scic = scic; + + /* Ensure SCI event is selected and event trigger is cleared. */ + pci_read_config_word(pdev, SWSCI, &swsci_val); + if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) { + swsci_val |= SWSCI_SCISEL; + swsci_val &= ~SWSCI_GSSCIE; + pci_write_config_word(pdev, SWSCI, swsci_val); + } + + /* Use event trigger to tell bios to check the mail. */ + swsci_val |= SWSCI_GSSCIE; + pci_write_config_word(pdev, SWSCI, swsci_val); + + /* Poll for the result. */ +#define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) + if (wait_for(C, dslp)) { + drm_dbg(&dev_priv->drm, "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_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic); + return -EIO; + } + + if (parm_out) + *parm_out = 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_i915_private *dev_priv = to_i915(intel_encoder->base.dev); + u32 parm = 0; + u32 type = 0; + u32 port; + + /* don't care about old stuff for now */ + if (!HAS_DDI(dev_priv)) + return 0; + + if (intel_encoder->type == INTEL_OUTPUT_DSI) + port = 0; + else + port = intel_encoder->port; + + if (port == PORT_E) { + port = 0; + } else { + parm |= 1 << port; + port++; + } + + /* + * The port numbering and mapping here is bizarre. The now-obsolete + * swsci spec supports ports numbered [0..4]. Port E is handled as a + * special case, but port F and beyond are not. The functionality is + * supposed to be obsolete for new platforms. Just bail out if the port + * number is out of bounds after mapping. + */ + if (port > 4) { + drm_dbg_kms(&dev_priv->drm, + "[ENCODER:%d:%s] port %c (index %u) out of bounds for display power state notification\n", + intel_encoder->base.base.id, intel_encoder->base.name, + port_name(intel_encoder->port), port); + return -EINVAL; + } + + if (!enable) + parm |= 4 << 8; + + switch (intel_encoder->type) { + case INTEL_OUTPUT_ANALOG: + type = DISPLAY_TYPE_CRT; + break; + case INTEL_OUTPUT_DDI: + case INTEL_OUTPUT_DP: + case INTEL_OUTPUT_HDMI: + case INTEL_OUTPUT_DP_MST: + type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; + break; + case INTEL_OUTPUT_EDP: + case INTEL_OUTPUT_DSI: + type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; + break; + default: + drm_WARN_ONCE(&dev_priv->drm, 1, + "unsupported intel_encoder type %d\n", + intel_encoder->type); + return -EINVAL; + } + + parm |= type << (16 + port * 3); + + return swsci(dev_priv, 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_i915_private *dev_priv, + pci_power_t state) +{ + int i; + + if (!HAS_DDI(dev_priv)) + return 0; + + for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { + if (state == power_state_map[i].pci_power_state) + return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE, + power_state_map[i].parm, NULL); + } + + return -EINVAL; +} + +static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp) +{ + struct intel_connector *connector; + struct drm_connector_list_iter conn_iter; + struct opregion_asle *asle = dev_priv->opregion.asle; + struct drm_device *dev = &dev_priv->drm; + + drm_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp); + + if (acpi_video_get_backlight_type() == acpi_backlight_native) { + drm_dbg_kms(&dev_priv->drm, + "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_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n", + bclp); + drm_connector_list_iter_begin(dev, &conn_iter); + for_each_intel_connector_iter(connector, &conn_iter) + intel_panel_set_backlight_acpi(connector->base.state, bclp, 255); + drm_connector_list_iter_end(&conn_iter); + asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID; + + drm_modeset_unlock(&dev->mode_config.connection_mutex); + + + return 0; +} + +static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, 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_dbg(&dev_priv->drm, "Illum is not supported\n"); + return ASLC_ALS_ILLUM_FAILED; +} + +static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb) +{ + drm_dbg(&dev_priv->drm, "PWM freq is not supported\n"); + return ASLC_PWM_FREQ_FAILED; +} + +static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit) +{ + /* Panel fitting is currently controlled by the X code, so this is a + noop until modesetting support works fully */ + drm_dbg(&dev_priv->drm, "Pfit is not supported\n"); + return ASLC_PFIT_FAILED; +} + +static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot) +{ + drm_dbg(&dev_priv->drm, "SROT is not supported\n"); + return ASLC_ROTATION_ANGLES_FAILED; +} + +static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer) +{ + if (!iuer) + drm_dbg(&dev_priv->drm, + "Button array event is not supported (nothing)\n"); + if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) + drm_dbg(&dev_priv->drm, + "Button array event is not supported (rotation lock)\n"); + if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) + drm_dbg(&dev_priv->drm, + "Button array event is not supported (volume down)\n"); + if (iuer & ASLE_IUER_VOLUME_UP_BTN) + drm_dbg(&dev_priv->drm, + "Button array event is not supported (volume up)\n"); + if (iuer & ASLE_IUER_WINDOWS_BTN) + drm_dbg(&dev_priv->drm, + "Button array event is not supported (windows)\n"); + if (iuer & ASLE_IUER_POWER_BTN) + drm_dbg(&dev_priv->drm, + "Button array event is not supported (power)\n"); + + return ASLC_BUTTON_ARRAY_FAILED; +} + +static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer) +{ + if (iuer & ASLE_IUER_CONVERTIBLE) + drm_dbg(&dev_priv->drm, + "Convertible is not supported (clamshell)\n"); + else + drm_dbg(&dev_priv->drm, + "Convertible is not supported (slate)\n"); + + return ASLC_CONVERTIBLE_FAILED; +} + +static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer) +{ + if (iuer & ASLE_IUER_DOCKING) + drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n"); + else + drm_dbg(&dev_priv->drm, + "Docking is not supported (undocked)\n"); + + return ASLC_DOCKING_FAILED; +} + +static u32 asle_isct_state(struct drm_i915_private *dev_priv) +{ + drm_dbg(&dev_priv->drm, "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 opregion_asle *asle = dev_priv->opregion.asle; + u32 aslc_stat = 0; + u32 aslc_req; + + if (!asle) + return; + + aslc_req = asle->aslc; + + if (!(aslc_req & ASLC_REQ_MSK)) { + drm_dbg(&dev_priv->drm, + "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_priv, asle->alsi); + + if (aslc_req & ASLC_SET_BACKLIGHT) + aslc_stat |= asle_set_backlight(dev_priv, asle->bclp); + + if (aslc_req & ASLC_SET_PFIT) + aslc_stat |= asle_set_pfit(dev_priv, asle->pfit); + + if (aslc_req & ASLC_SET_PWM_FREQ) + aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb); + + if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) + aslc_stat |= asle_set_supported_rotation_angles(dev_priv, + asle->srot); + + if (aslc_req & ASLC_BUTTON_ARRAY) + aslc_stat |= asle_set_button_array(dev_priv, asle->iuer); + + if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) + aslc_stat |= asle_set_convertible(dev_priv, asle->iuer); + + if (aslc_req & ASLC_DOCKING_INDICATOR) + aslc_stat |= asle_set_docking(dev_priv, asle->iuer); + + if (aslc_req & ASLC_ISCT_STATE_CHANGE) + aslc_stat |= asle_isct_state(dev_priv); + + asle->aslc = aslc_stat; +} + +void intel_opregion_asle_intr(struct drm_i915_private *dev_priv) +{ + 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) + +/* + * 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. + */ +static int intel_opregion_video_event(struct notifier_block *nb, + unsigned long val, void *data) +{ + struct intel_opregion *opregion = container_of(nb, struct intel_opregion, + acpi_notifier); + struct acpi_bus_event *event = data; + struct opregion_acpi *acpi; + int ret = NOTIFY_OK; + + if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) + return NOTIFY_DONE; + + acpi = opregion->acpi; + + if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) + ret = NOTIFY_BAD; + + acpi->csts = 0; + + return ret; +} + +/* + * 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 set_did(struct intel_opregion *opregion, int i, u32 val) +{ + if (i < ARRAY_SIZE(opregion->acpi->didl)) { + opregion->acpi->didl[i] = val; + } else { + i -= ARRAY_SIZE(opregion->acpi->didl); + + if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) + return; + + opregion->acpi->did2[i] = val; + } +} + +static void intel_didl_outputs(struct drm_i915_private *dev_priv) +{ + struct intel_opregion *opregion = &dev_priv->opregion; + struct intel_connector *connector; + struct drm_connector_list_iter conn_iter; + int i = 0, max_outputs; + + /* + * In theory, did2, the extended didl, gets added at opregion version + * 3.0. In practice, however, we're supposed to set it for earlier + * versions as well, since a BIOS that doesn't understand did2 should + * not look at it anyway. Use a variable so we can tweak this if a need + * arises later. + */ + max_outputs = ARRAY_SIZE(opregion->acpi->didl) + + ARRAY_SIZE(opregion->acpi->did2); + + intel_acpi_device_id_update(dev_priv); + + drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); + for_each_intel_connector_iter(connector, &conn_iter) { + if (i < max_outputs) + set_did(opregion, i, connector->acpi_device_id); + i++; + } + drm_connector_list_iter_end(&conn_iter); + + drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i); + + if (i > max_outputs) + drm_err(&dev_priv->drm, + "More than %d outputs in connector list\n", + max_outputs); + + /* If fewer than max outputs, the list must be null terminated */ + if (i < max_outputs) + set_did(opregion, i, 0); +} + +static void intel_setup_cadls(struct drm_i915_private *dev_priv) +{ + struct intel_opregion *opregion = &dev_priv->opregion; + struct intel_connector *connector; + struct drm_connector_list_iter conn_iter; + int i = 0; + + /* + * Initialize the CADL field from the connector device ids. This is + * essentially the same as copying from the DIDL. 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. + * + * Note that internal panels should be at the front of the connector + * list already, ensuring they're not left out. + */ + drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); + for_each_intel_connector_iter(connector, &conn_iter) { + if (i >= ARRAY_SIZE(opregion->acpi->cadl)) + break; + opregion->acpi->cadl[i++] = connector->acpi_device_id; + } + drm_connector_list_iter_end(&conn_iter); + + /* If fewer than 8 active devices, the list must be null terminated */ + if (i < ARRAY_SIZE(opregion->acpi->cadl)) + opregion->acpi->cadl[i] = 0; +} + +static void swsci_setup(struct drm_i915_private *dev_priv) +{ + 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_priv, 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_priv, 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_priv, 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_dbg(&dev_priv->drm, + "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_dbg(&dev_priv->drm, + "SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", + opregion->swsci_gbda_sub_functions, + opregion->swsci_sbcb_sub_functions); +} + +static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) +{ + DRM_DEBUG_KMS("Falling back to manually reading VBT from " + "VBIOS ROM for %s\n", id->ident); + return 1; +} + +static const struct dmi_system_id intel_no_opregion_vbt[] = { + { + .callback = intel_no_opregion_vbt_callback, + .ident = "ThinkCentre A57", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), + }, + }, + { } +}; + +static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv) +{ + struct intel_opregion *opregion = &dev_priv->opregion; + const struct firmware *fw = NULL; + const char *name = dev_priv->params.vbt_firmware; + int ret; + + if (!name || !*name) + return -ENOENT; + + ret = request_firmware(&fw, name, &dev_priv->drm.pdev->dev); + if (ret) { + drm_err(&dev_priv->drm, + "Requesting VBT firmware \"%s\" failed (%d)\n", + name, ret); + return ret; + } + + if (intel_bios_is_valid_vbt(fw->data, fw->size)) { + opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL); + if (opregion->vbt_firmware) { + drm_dbg_kms(&dev_priv->drm, + "Found valid VBT firmware \"%s\"\n", name); + opregion->vbt = opregion->vbt_firmware; + opregion->vbt_size = fw->size; + ret = 0; + } else { + ret = -ENOMEM; + } + } else { + drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n", + name); + ret = -EINVAL; + } + + release_firmware(fw); + + return ret; +} + +int intel_opregion_setup(struct drm_i915_private *dev_priv) +{ + struct intel_opregion *opregion = &dev_priv->opregion; + struct pci_dev *pdev = dev_priv->drm.pdev; + u32 asls, mboxes; + char buf[sizeof(OPREGION_SIGNATURE)]; + int err = 0; + void *base; + const void *vbt; + u32 vbt_size; + + BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); + BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); + BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); + BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); + BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400); + + pci_read_config_dword(pdev, ASLS, &asls); + drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n", + asls); + if (asls == 0) { + drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n"); + return -ENOTSUPP; + } + + INIT_WORK(&opregion->asle_work, asle_work); + + base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB); + if (!base) + return -ENOMEM; + + memcpy(buf, base, sizeof(buf)); + + if (memcmp(buf, OPREGION_SIGNATURE, 16)) { + drm_dbg(&dev_priv->drm, "opregion signature mismatch\n"); + err = -EINVAL; + goto err_out; + } + opregion->header = base; + opregion->lid_state = base + ACPI_CLID; + + drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n", + opregion->header->over.major, + opregion->header->over.minor, + opregion->header->over.revision); + + mboxes = opregion->header->mboxes; + if (mboxes & MBOX_ACPI) { + drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n"); + opregion->acpi = base + OPREGION_ACPI_OFFSET; + /* + * Indicate we handle monitor hotplug events ourselves so we do + * not need ACPI notifications for them. Disabling these avoids + * triggering the AML code doing the notifation, which may be + * broken as Windows also seems to disable these. + */ + opregion->acpi->chpd = 1; + } + + if (mboxes & MBOX_SWSCI) { + drm_dbg(&dev_priv->drm, "SWSCI supported\n"); + opregion->swsci = base + OPREGION_SWSCI_OFFSET; + swsci_setup(dev_priv); + } + + if (mboxes & MBOX_ASLE) { + drm_dbg(&dev_priv->drm, "ASLE supported\n"); + opregion->asle = base + OPREGION_ASLE_OFFSET; + + opregion->asle->ardy = ASLE_ARDY_NOT_READY; + } + + if (mboxes & MBOX_ASLE_EXT) + drm_dbg(&dev_priv->drm, "ASLE extension supported\n"); + + if (intel_load_vbt_firmware(dev_priv) == 0) + goto out; + + if (dmi_check_system(intel_no_opregion_vbt)) + goto out; + + if (opregion->header->over.major >= 2 && opregion->asle && + opregion->asle->rvda && opregion->asle->rvds) { + resource_size_t rvda = opregion->asle->rvda; + + /* + * opregion 2.0: rvda is the physical VBT address. + * + * opregion 2.1+: rvda is unsigned, relative offset from + * opregion base, and should never point within opregion. + */ + if (opregion->header->over.major > 2 || + opregion->header->over.minor >= 1) { + drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE); + + rvda += asls; + } + + opregion->rvda = memremap(rvda, opregion->asle->rvds, + MEMREMAP_WB); + + vbt = opregion->rvda; + vbt_size = opregion->asle->rvds; + if (intel_bios_is_valid_vbt(vbt, vbt_size)) { + drm_dbg_kms(&dev_priv->drm, + "Found valid VBT in ACPI OpRegion (RVDA)\n"); + opregion->vbt = vbt; + opregion->vbt_size = vbt_size; + goto out; + } else { + drm_dbg_kms(&dev_priv->drm, + "Invalid VBT in ACPI OpRegion (RVDA)\n"); + memunmap(opregion->rvda); + opregion->rvda = NULL; + } + } + + vbt = base + OPREGION_VBT_OFFSET; + /* + * The VBT specification says that if the ASLE ext mailbox is not used + * its area is reserved, but on some CHT boards the VBT extends into the + * ASLE ext area. Allow this even though it is against the spec, so we + * do not end up rejecting the VBT on those boards (and end up not + * finding the LCD panel because of this). + */ + vbt_size = (mboxes & MBOX_ASLE_EXT) ? + OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE; + vbt_size -= OPREGION_VBT_OFFSET; + if (intel_bios_is_valid_vbt(vbt, vbt_size)) { + drm_dbg_kms(&dev_priv->drm, + "Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); + opregion->vbt = vbt; + opregion->vbt_size = vbt_size; + } else { + drm_dbg_kms(&dev_priv->drm, + "Invalid VBT in ACPI OpRegion (Mailbox #4)\n"); + } + +out: + return 0; + +err_out: + memunmap(base); + return err; +} + +static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id) +{ + DRM_INFO("Using panel type from OpRegion on %s\n", id->ident); + return 1; +} + +static const struct dmi_system_id intel_use_opregion_panel_type[] = { + { + .callback = intel_use_opregion_panel_type_callback, + .ident = "Conrac GmbH IX45GM2", + .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"), + DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"), + }, + }, + { } +}; + +int +intel_opregion_get_panel_type(struct drm_i915_private *dev_priv) +{ + u32 panel_details; + int ret; + + ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details); + if (ret) { + drm_dbg_kms(&dev_priv->drm, + "Failed to get panel details from OpRegion (%d)\n", + ret); + return ret; + } + + ret = (panel_details >> 8) & 0xff; + if (ret > 0x10) { + drm_dbg_kms(&dev_priv->drm, + "Invalid OpRegion panel type 0x%x\n", ret); + return -EINVAL; + } + + /* fall back to VBT panel type? */ + if (ret == 0x0) { + drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n"); + return -ENODEV; + } + + /* + * So far we know that some machined must use it, others must not use it. + * There doesn't seem to be any way to determine which way to go, except + * via a quirk list :( + */ + if (!dmi_check_system(intel_use_opregion_panel_type)) { + drm_dbg_kms(&dev_priv->drm, + "Ignoring OpRegion panel type (%d)\n", ret - 1); + return -ENODEV; + } + + return ret - 1; +} + +void intel_opregion_register(struct drm_i915_private *i915) +{ + struct intel_opregion *opregion = &i915->opregion; + + if (!opregion->header) + return; + + if (opregion->acpi) { + opregion->acpi_notifier.notifier_call = + intel_opregion_video_event; + register_acpi_notifier(&opregion->acpi_notifier); + } + + intel_opregion_resume(i915); +} + +void intel_opregion_resume(struct drm_i915_private *i915) +{ + struct intel_opregion *opregion = &i915->opregion; + + if (!opregion->header) + return; + + if (opregion->acpi) { + intel_didl_outputs(i915); + intel_setup_cadls(i915); + + /* + * 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. + */ + opregion->acpi->csts = 0; + opregion->acpi->drdy = 1; + } + + if (opregion->asle) { + opregion->asle->tche = ASLE_TCHE_BLC_EN; + opregion->asle->ardy = ASLE_ARDY_READY; + } + + intel_opregion_notify_adapter(i915, PCI_D0); +} + +void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state) +{ + struct intel_opregion *opregion = &i915->opregion; + + if (!opregion->header) + return; + + intel_opregion_notify_adapter(i915, state); + + if (opregion->asle) + opregion->asle->ardy = ASLE_ARDY_NOT_READY; + + cancel_work_sync(&i915->opregion.asle_work); + + if (opregion->acpi) + opregion->acpi->drdy = 0; +} + +void intel_opregion_unregister(struct drm_i915_private *i915) +{ + struct intel_opregion *opregion = &i915->opregion; + + intel_opregion_suspend(i915, PCI_D1); + + if (!opregion->header) + return; + + if (opregion->acpi_notifier.notifier_call) { + unregister_acpi_notifier(&opregion->acpi_notifier); + opregion->acpi_notifier.notifier_call = NULL; + } + + /* just clear all opregion memory pointers now */ + memunmap(opregion->header); + if (opregion->rvda) { + memunmap(opregion->rvda); + opregion->rvda = NULL; + } + if (opregion->vbt_firmware) { + kfree(opregion->vbt_firmware); + opregion->vbt_firmware = NULL; + } + opregion->header = NULL; + opregion->acpi = NULL; + opregion->swsci = NULL; + opregion->asle = NULL; + opregion->vbt = NULL; + opregion->lid_state = NULL; +} |