353 lines
10 KiB
C
353 lines
10 KiB
C
|
/*
|
||
|
|
* Copyright 2011 Intel Corporation
|
||
|
|
*
|
||
|
|
* 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL
|
||
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS 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 "psb_drv.h"
|
||
|
|
#include "psb_irq.h"
|
||
|
|
#include "psb_intel_reg.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];
|
||
|
|
} __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 {
|
||
|
|
/*FIXME: add it later*/
|
||
|
|
} __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];
|
||
|
|
} __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_FAILED (1<<10)
|
||
|
|
#define ASLE_BACKLIGHT_FAILED (1<<12)
|
||
|
|
#define ASLE_PFIT_FAILED (1<<14)
|
||
|
|
#define ASLE_PWM_FREQ_FAILED (1<<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)
|
||
|
|
|
||
|
|
/* 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)
|
||
|
|
|
||
|
|
/* 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 struct psb_intel_opregion *system_opregion;
|
||
|
|
|
||
|
|
static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
|
||
|
|
{
|
||
|
|
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
|
||
|
|
struct opregion_asle *asle = dev_priv->opregion.asle;
|
||
|
|
|
||
|
|
DRM_DEBUG_DRIVER("asle set backlight %x\n", bclp);
|
||
|
|
|
||
|
|
if (!(bclp & ASLE_BCLP_VALID))
|
||
|
|
return ASLE_BACKLIGHT_FAILED;
|
||
|
|
|
||
|
|
bclp &= ASLE_BCLP_MSK;
|
||
|
|
if (bclp > 255)
|
||
|
|
return ASLE_BACKLIGHT_FAILED;
|
||
|
|
|
||
|
|
gma_backlight_set(dev, bclp * PSB_MAX_BRIGHTNESS / 255);
|
||
|
|
|
||
|
|
asle->cblv = (bclp * 0x64) / 0xff | ASLE_CBLV_VALID;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void psb_intel_opregion_asle_work(struct work_struct *work)
|
||
|
|
{
|
||
|
|
struct psb_intel_opregion *opregion =
|
||
|
|
container_of(work, struct psb_intel_opregion, asle_work);
|
||
|
|
struct drm_psb_private *dev_priv =
|
||
|
|
container_of(opregion, struct drm_psb_private, opregion);
|
||
|
|
struct opregion_asle *asle = opregion->asle;
|
||
|
|
u32 asle_stat = 0;
|
||
|
|
u32 asle_req;
|
||
|
|
|
||
|
|
if (!asle)
|
||
|
|
return;
|
||
|
|
|
||
|
|
asle_req = asle->aslc & ASLE_REQ_MSK;
|
||
|
|
if (!asle_req) {
|
||
|
|
DRM_DEBUG_DRIVER("non asle set request??\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (asle_req & ASLE_SET_BACKLIGHT)
|
||
|
|
asle_stat |= asle_set_backlight(&dev_priv->dev, asle->bclp);
|
||
|
|
|
||
|
|
asle->aslc = asle_stat;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void psb_intel_opregion_asle_intr(struct drm_device *dev)
|
||
|
|
{
|
||
|
|
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
|
||
|
|
|
||
|
|
if (dev_priv->opregion.asle)
|
||
|
|
schedule_work(&dev_priv->opregion.asle_work);
|
||
|
|
}
|
||
|
|
|
||
|
|
#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 psb_intel_opregion_enable_asle(struct drm_device *dev)
|
||
|
|
{
|
||
|
|
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
|
||
|
|
struct opregion_asle *asle = dev_priv->opregion.asle;
|
||
|
|
|
||
|
|
if (asle && system_opregion ) {
|
||
|
|
/* Don't do this on Medfield or other non PC like devices, they
|
||
|
|
use the bit for something different altogether */
|
||
|
|
gma_enable_pipestat(dev_priv, 0, PIPE_LEGACY_BLC_EVENT_ENABLE);
|
||
|
|
gma_enable_pipestat(dev_priv, 1, PIPE_LEGACY_BLC_EVENT_ENABLE);
|
||
|
|
|
||
|
|
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 int psb_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 psb_intel_opregion_notifier = {
|
||
|
|
.notifier_call = psb_intel_opregion_video_event,
|
||
|
|
};
|
||
|
|
|
||
|
|
void psb_intel_opregion_init(struct drm_device *dev)
|
||
|
|
{
|
||
|
|
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
|
||
|
|
struct psb_intel_opregion *opregion = &dev_priv->opregion;
|
||
|
|
|
||
|
|
if (!opregion->header)
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (opregion->acpi) {
|
||
|
|
/* 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(&psb_intel_opregion_notifier);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void psb_intel_opregion_fini(struct drm_device *dev)
|
||
|
|
{
|
||
|
|
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
|
||
|
|
struct psb_intel_opregion *opregion = &dev_priv->opregion;
|
||
|
|
|
||
|
|
if (!opregion->header)
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (opregion->acpi) {
|
||
|
|
opregion->acpi->drdy = 0;
|
||
|
|
|
||
|
|
system_opregion = NULL;
|
||
|
|
unregister_acpi_notifier(&psb_intel_opregion_notifier);
|
||
|
|
}
|
||
|
|
|
||
|
|
cancel_work_sync(&opregion->asle_work);
|
||
|
|
|
||
|
|
/* 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;
|
||
|
|
}
|
||
|
|
|
||
|
|
int psb_intel_opregion_setup(struct drm_device *dev)
|
||
|
|
{
|
||
|
|
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
|
||
|
|
struct pci_dev *pdev = to_pci_dev(dev->dev);
|
||
|
|
struct psb_intel_opregion *opregion = &dev_priv->opregion;
|
||
|
|
u32 opregion_phy, mboxes;
|
||
|
|
void __iomem *base;
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
pci_read_config_dword(pdev, PCI_ASLS, &opregion_phy);
|
||
|
|
if (opregion_phy == 0) {
|
||
|
|
DRM_DEBUG_DRIVER("ACPI Opregion not supported\n");
|
||
|
|
return -ENOTSUPP;
|
||
|
|
}
|
||
|
|
|
||
|
|
INIT_WORK(&opregion->asle_work, psb_intel_opregion_asle_work);
|
||
|
|
|
||
|
|
DRM_DEBUG("OpRegion detected at 0x%8x\n", opregion_phy);
|
||
|
|
base = acpi_os_ioremap(opregion_phy, 8*1024);
|
||
|
|
if (!base)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
if (memcmp(base, 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 = opregion->header->mboxes;
|
||
|
|
if (mboxes & MBOX_ACPI) {
|
||
|
|
DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
|
||
|
|
opregion->acpi = base + OPREGION_ACPI_OFFSET;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mboxes & MBOX_ASLE) {
|
||
|
|
DRM_DEBUG_DRIVER("ASLE supported\n");
|
||
|
|
opregion->asle = base + OPREGION_ASLE_OFFSET;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_out:
|
||
|
|
iounmap(base);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|