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path: root/drivers/gpu/drm/i915/intel_opregion.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_opregion.c')
-rw-r--r--drivers/gpu/drm/i915/intel_opregion.c506
1 files changed, 0 insertions, 506 deletions
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
deleted file mode 100644
index cfb8fb68f09c..000000000000
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ /dev/null
@@ -1,506 +0,0 @@
-/*
- * 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 <linux/acpi_io.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 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];
-} __attribute__((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];
-} __attribute__((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];
-} __attribute__((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 */
- u8 rsvd[102];
-} __attribute__((packed));
-
-/* Driver readiness indicator */
-#define ASLE_ARDY_READY (1 << 0)
-#define ASLE_ARDY_NOT_READY (0 << 0)
-
-/* ASLE irq request bits */
-#define ASLE_SET_ALS_ILLUM (1 << 0)
-#define ASLE_SET_BACKLIGHT (1 << 1)
-#define ASLE_SET_PFIT (1 << 2)
-#define ASLE_SET_PWM_FREQ (1 << 3)
-#define ASLE_REQ_MSK 0xf
-
-/* response bits of ASLE irq request */
-#define ASLE_ALS_ILLUM_FAILED (1<<10)
-#define ASLE_BACKLIGHT_FAILED (1<<12)
-#define ASLE_PFIT_FAILED (1<<14)
-#define ASLE_PWM_FREQ_FAILED (1<<16)
-
-/* 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)
-
-#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)
-
-#ifdef CONFIG_ACPI
-static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
-
- DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
-
- if (!(bclp & ASLE_BCLP_VALID))
- return ASLE_BACKLIGHT_FAILED;
-
- bclp &= ASLE_BCLP_MSK;
- if (bclp > 255)
- return ASLE_BACKLIGHT_FAILED;
-
- intel_panel_set_backlight(dev, bclp, 255);
- iowrite32((bclp*0x64)/0xff | ASLE_CBLV_VALID, &asle->cblv);
-
- 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 ASLE_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 ASLE_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 ASLE_PFIT_FAILED;
-}
-
-void intel_opregion_asle_intr(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
- u32 asle_stat = 0;
- u32 asle_req;
-
- if (!asle)
- return;
-
- asle_req = ioread32(&asle->aslc) & ASLE_REQ_MSK;
-
- if (!asle_req) {
- DRM_DEBUG_DRIVER("non asle set request??\n");
- return;
- }
-
- if (asle_req & ASLE_SET_ALS_ILLUM)
- asle_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi));
-
- if (asle_req & ASLE_SET_BACKLIGHT)
- asle_stat |= asle_set_backlight(dev, ioread32(&asle->bclp));
-
- if (asle_req & ASLE_SET_PFIT)
- asle_stat |= asle_set_pfit(dev, ioread32(&asle->pfit));
-
- if (asle_req & ASLE_SET_PWM_FREQ)
- asle_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb));
-
- iowrite32(asle_stat, &asle->aslc);
-}
-
-#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 = DEVICE_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);
-
- 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;
-}
-#endif
-
-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;
- }
-
- 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;
- }
- 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;
-}
generated by cgit (git 2.34.1) at 2025-12-25 11:31:23 +0000