summaryrefslogtreecommitdiff
path: root/linux-core/i915_opregion.c
diff options
context:
space:
mode:
Diffstat (limited to 'linux-core/i915_opregion.c')
-rw-r--r--linux-core/i915_opregion.c389
1 files changed, 0 insertions, 389 deletions
diff --git a/linux-core/i915_opregion.c b/linux-core/i915_opregion.c
deleted file mode 100644
index 1fa599ea..00000000
--- a/linux-core/i915_opregion.c
+++ /dev/null
@@ -1,389 +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.
- *
- */
-
-#include <linux/acpi.h>
-
-#include "drmP.h"
-#include "i915_drm.h"
-#include "i915_drv.h"
-
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,25)
-#define PCI_ASLE 0xe4
-#define PCI_ASLS 0xfc
-
-#define OPREGION_SZ (8*1024)
-#define OPREGION_HEADER_OFFSET 0
-#define OPREGION_ACPI_OFFSET 0x100
-#define OPREGION_SWSCI_OFFSET 0x200
-#define OPREGION_ASLE_OFFSET 0x300
-#define OPREGION_VBT_OFFSET 0x1000
-
-#define OPREGION_SIGNATURE "IntelGraphicsMem"
-#define MBOX_ACPI (1<<0)
-#define MBOX_SWSCI (1<<1)
-#define MBOX_ASLE (1<<2)
-
-/* _DOD id definitions */
-#define OUTPUT_CONNECTOR_MSK 0xf000
-#define OUTPUT_CONNECTOR_OFFSET 12
-
-#define OUTPUT_PORT_MSK 0x00f0
-#define OUTPUT_PORT_OFFSET 4
- #define OUTPUT_PORT_ANALOG 0
- #define OUTPUT_PORT_LVDS 1
- #define OUTPUT_PORT_SDVOB 2
- #define OUTPUT_PORT_SDVOC 3
- #define OUTPUT_PORT_TV 4
-
-#define OUTPUT_DISPLAY_MSK 0x0f00
-#define OUTPUT_DISPLAY_OFFSET 8
- #define OUTPUT_DISPLAY_OTHER 0
- #define OUTPUT_DISPLAY_VGA 1
- #define OUTPUT_DISPLAY_TV 2
- #define OUTPUT_DISPLAY_DIGI 3
- #define OUTPUT_DISPLAY_FLAT_PANEL 4
-
-/* predefined id for integrated LVDS and VGA connector */
-#define OUTPUT_INT_LVDS 0x00000110
-#define OUTPUT_INT_VGA 0x80000100
-
-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));
-
-/* 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_FAIL (2<<10)
-#define ASLE_BACKLIGHT_FAIL (2<<12)
-#define ASLE_PFIT_FAIL (2<<14)
-#define ASLE_PWM_FREQ_FAIL (2<<16)
-
-/* 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)
-
-static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct opregion_asle *asle = dev_priv->opregion.asle;
- u32 blc_pwm_ctl;
-
- if (!(bclp & ASLE_BCLP_VALID))
- return ASLE_BACKLIGHT_FAIL;
-
- bclp &= ASLE_BCLP_MSK;
- if (bclp < 0 || bclp > 255)
- return ASLE_BACKLIGHT_FAIL;
-
- blc_pwm_ctl = I915_READ(BLC_PWM_CTL);
- blc_pwm_ctl &= ~BACKLIGHT_DUTY_CYCLE_MASK;
- I915_WRITE(BLC_PWM_CTL, blc_pwm_ctl | ((bclp * 0x101) -1));
- asle->cblv = (bclp*0x64)/0xff | ASLE_CBLV_VALID;
-
- return 0;
-}
-
-static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
-{
- return 0;
-}
-
-static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- if (pfmb & ASLE_PFMB_PWM_VALID) {
- u32 blc_pwm_ctl = I915_READ(BLC_PWM_CTL);
- u32 pwm = pfmb & ASLE_PFMB_PWM_MASK;
- blc_pwm_ctl &= BACKLIGHT_DUTY_CYCLE_MASK;
- pwm = pwm >> 9;
- // FIXME - what do we do with the PWM?
- }
- return 0;
-}
-
-static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
-{
- if (!(pfit & ASLE_PFIT_VALID))
- return ASLE_PFIT_FAIL;
- return 0;
-}
-
-void opregion_asle_intr(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct opregion_asle *asle = dev_priv->opregion.asle;
- u32 asle_stat = 0;
- u32 asle_req;
-
- if (!asle)
- return;
-
- asle_req = asle->aslc & ASLE_REQ_MSK;
-
- if (!asle_req) {
- DRM_DEBUG("non asle set request??\n");
- return;
- }
-
- if (asle_req & ASLE_SET_ALS_ILLUM)
- asle_stat |= asle_set_als_illum(dev, asle->alsi);
-
- if (asle_req & ASLE_SET_BACKLIGHT)
- asle_stat |= asle_set_backlight(dev, asle->bclp);
-
- if (asle_req & ASLE_SET_PFIT)
- asle_stat |= asle_set_pfit(dev, asle->pfit);
-
- if (asle_req & ASLE_SET_PWM_FREQ)
- asle_stat |= asle_set_pwm_freq(dev, asle->pfmb);
-
- asle->aslc = asle_stat;
-}
-
-#define ASLE_ALS_EN (1<<0)
-#define ASLE_BLC_EN (1<<1)
-#define ASLE_PFIT_EN (1<<2)
-#define ASLE_PFMB_EN (1<<3)
-
-void opregion_enable_asle(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct opregion_asle *asle = dev_priv->opregion.asle;
-
- if (asle) {
- if (IS_MOBILE(dev)) {
- u32 pipeb_stats = I915_READ(PIPEBSTAT);
- /* Some hardware uses the legacy backlight controller
- to signal interrupts, so we need to set up pipe B
- to generate an IRQ on writes */
- pipeb_stats |= I915_LEGACY_BLC_EVENT_ENABLE;
- I915_WRITE(PIPEBSTAT, pipeb_stats);
-
- dev_priv->irq_mask_reg &=
- ~I915_DISPLAY_PIPE_B_EVENT_INTERRUPT;
- }
-
- dev_priv->irq_mask_reg &= ~I915_ASLE_INTERRUPT;
-
- asle->tche = ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN |
- ASLE_PFMB_EN;
- asle->ardy = 1;
- }
-}
-
-#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;
-
-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.
- We might want to fix the video driver to be opregion-aware in
- future, but right now we just indicate to the firmware that the
- request has been handled */
-
- struct opregion_acpi *acpi;
-
- if (!system_opregion)
- return NOTIFY_DONE;
-
- acpi = system_opregion->acpi;
- acpi->csts = 0;
-
- return NOTIFY_OK;
-}
-
-static struct notifier_block intel_opregion_notifier = {
- .notifier_call = intel_opregion_video_event,
-};
-
-int intel_opregion_init(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_opregion *opregion = &dev_priv->opregion;
- void *base;
- u32 asls, mboxes;
- int err = 0;
-
- pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
- DRM_DEBUG("graphic opregion physical addr: 0x%x\n", asls);
- if (asls == 0) {
- DRM_DEBUG("ACPI OpRegion not supported!\n");
- return -ENOTSUPP;
- }
-
- base = ioremap(asls, OPREGION_SZ);
- if (!base)
- return -ENOMEM;
-
- opregion->header = base;
- if (memcmp(opregion->header->signature, OPREGION_SIGNATURE, 16)) {
- DRM_DEBUG("opregion signature mismatch\n");
- err = -EINVAL;
- goto err_out;
- }
-
- mboxes = opregion->header->mboxes;
- if (mboxes & MBOX_ACPI) {
- DRM_DEBUG("Public ACPI methods supported\n");
- opregion->acpi = base + OPREGION_ACPI_OFFSET;
- } else {
- DRM_DEBUG("Public ACPI methods not supported\n");
- err = -ENOTSUPP;
- goto err_out;
- }
- opregion->enabled = 1;
-
- if (mboxes & MBOX_SWSCI) {
- DRM_DEBUG("SWSCI supported\n");
- opregion->swsci = base + OPREGION_SWSCI_OFFSET;
- }
- if (mboxes & MBOX_ASLE) {
- DRM_DEBUG("ASLE supported\n");
- opregion->asle = base + OPREGION_ASLE_OFFSET;
- }
-
- /* 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;
-
- system_opregion = opregion;
- register_acpi_notifier(&intel_opregion_notifier);
-
- return 0;
-
-err_out:
- iounmap(opregion->header);
- opregion->header = NULL;
- return err;
-}
-
-void intel_opregion_free(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_opregion *opregion = &dev_priv->opregion;
-
- if (!opregion->enabled)
- return;
-
- opregion->acpi->drdy = 0;
-
- 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->enabled = 0;
-}
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 17:29:54 +0000