aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/i915/intel_opregion.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/i915/intel_opregion.c')
-rw-r--r--drivers/gpu/drm/i915/intel_opregion.c71
1 files changed, 41 insertions, 30 deletions
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 289140bc83cb..18bd0af855dc 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -25,6 +25,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/acpi.h>
#include <linux/acpi_io.h>
#include <acpi/video.h>
@@ -149,7 +151,7 @@ struct opregion_asle {
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;
+ struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
u32 max;
if (!(bclp & ASLE_BCLP_VALID))
@@ -161,7 +163,7 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
max = intel_panel_get_max_backlight(dev);
intel_panel_set_backlight(dev, bclp * max / 255);
- asle->cblv = (bclp*0x64)/0xff | ASLE_CBLV_VALID;
+ iowrite32((bclp*0x64)/0xff | ASLE_CBLV_VALID, &asle->cblv);
return 0;
}
@@ -198,14 +200,14 @@ static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
void intel_opregion_asle_intr(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct opregion_asle *asle = dev_priv->opregion.asle;
+ struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
u32 asle_stat = 0;
u32 asle_req;
if (!asle)
return;
- asle_req = asle->aslc & ASLE_REQ_MSK;
+ asle_req = ioread32(&asle->aslc) & ASLE_REQ_MSK;
if (!asle_req) {
DRM_DEBUG_DRIVER("non asle set request??\n");
@@ -213,31 +215,31 @@ void intel_opregion_asle_intr(struct drm_device *dev)
}
if (asle_req & ASLE_SET_ALS_ILLUM)
- asle_stat |= asle_set_als_illum(dev, asle->alsi);
+ asle_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi));
if (asle_req & ASLE_SET_BACKLIGHT)
- asle_stat |= asle_set_backlight(dev, asle->bclp);
+ asle_stat |= asle_set_backlight(dev, ioread32(&asle->bclp));
if (asle_req & ASLE_SET_PFIT)
- asle_stat |= asle_set_pfit(dev, asle->pfit);
+ asle_stat |= asle_set_pfit(dev, ioread32(&asle->pfit));
if (asle_req & ASLE_SET_PWM_FREQ)
- asle_stat |= asle_set_pwm_freq(dev, asle->pfmb);
+ asle_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb));
- asle->aslc = asle_stat;
+ iowrite32(asle_stat, &asle->aslc);
}
void intel_opregion_gse_intr(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct opregion_asle *asle = dev_priv->opregion.asle;
+ struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
u32 asle_stat = 0;
u32 asle_req;
if (!asle)
return;
- asle_req = asle->aslc & ASLE_REQ_MSK;
+ asle_req = ioread32(&asle->aslc) & ASLE_REQ_MSK;
if (!asle_req) {
DRM_DEBUG_DRIVER("non asle set request??\n");
@@ -250,7 +252,7 @@ void intel_opregion_gse_intr(struct drm_device *dev)
}
if (asle_req & ASLE_SET_BACKLIGHT)
- asle_stat |= asle_set_backlight(dev, asle->bclp);
+ asle_stat |= asle_set_backlight(dev, ioread32(&asle->bclp));
if (asle_req & ASLE_SET_PFIT) {
DRM_DEBUG_DRIVER("Pfit is not supported\n");
@@ -262,7 +264,7 @@ void intel_opregion_gse_intr(struct drm_device *dev)
asle_stat |= ASLE_PWM_FREQ_FAILED;
}
- asle->aslc = asle_stat;
+ iowrite32(asle_stat, &asle->aslc);
}
#define ASLE_ALS_EN (1<<0)
#define ASLE_BLC_EN (1<<1)
@@ -272,15 +274,16 @@ void intel_opregion_gse_intr(struct drm_device *dev)
void intel_opregion_enable_asle(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct opregion_asle *asle = dev_priv->opregion.asle;
+ struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
if (asle) {
if (IS_MOBILE(dev))
intel_enable_asle(dev);
- asle->tche = ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN |
- ASLE_PFMB_EN;
- asle->ardy = 1;
+ iowrite32(ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN |
+ ASLE_PFMB_EN,
+ &asle->tche);
+ iowrite32(1, &asle->ardy);
}
}
@@ -298,7 +301,7 @@ static int intel_opregion_video_event(struct notifier_block *nb,
Linux, these are handled by the dock, button and video drivers.
*/
- struct opregion_acpi *acpi;
+ struct opregion_acpi __iomem *acpi;
struct acpi_bus_event *event = data;
int ret = NOTIFY_OK;
@@ -310,10 +313,11 @@ static int intel_opregion_video_event(struct notifier_block *nb,
acpi = system_opregion->acpi;
- if (event->type == 0x80 && !(acpi->cevt & 0x1))
+ if (event->type == 0x80 &&
+ (ioread32(&acpi->cevt) & 1) == 0)
ret = NOTIFY_BAD;
- acpi->csts = 0;
+ iowrite32(0, &acpi->csts);
return ret;
}
@@ -337,6 +341,7 @@ static void intel_didl_outputs(struct drm_device *dev)
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);
@@ -355,7 +360,7 @@ static void intel_didl_outputs(struct drm_device *dev)
}
if (!acpi_video_bus) {
- printk(KERN_WARNING "No ACPI video bus found\n");
+ pr_warn("No ACPI video bus found\n");
return;
}
@@ -371,7 +376,8 @@ static void intel_didl_outputs(struct drm_device *dev)
if (ACPI_SUCCESS(status)) {
if (!device_id)
goto blind_set;
- opregion->acpi->didl[i] = (u32)(device_id & 0x0f0f);
+ iowrite32((u32)(device_id & 0x0f0f),
+ &opregion->acpi->didl[i]);
i++;
}
}
@@ -379,7 +385,7 @@ static void intel_didl_outputs(struct drm_device *dev)
end:
/* If fewer than 8 outputs, the list must be null terminated */
if (i < 8)
- opregion->acpi->didl[i] = 0;
+ iowrite32(0, &opregion->acpi->didl[i]);
return;
blind_set:
@@ -413,7 +419,9 @@ blind_set:
output_type = ACPI_LVDS_OUTPUT;
break;
}
- opregion->acpi->didl[i] |= (1<<31) | output_type | i;
+ temp = ioread32(&opregion->acpi->didl[i]);
+ iowrite32(temp | (1<<31) | output_type | i,
+ &opregion->acpi->didl[i]);
i++;
}
goto end;
@@ -434,8 +442,8 @@ void intel_opregion_init(struct drm_device *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. */
- opregion->acpi->csts = 0;
- opregion->acpi->drdy = 1;
+ iowrite32(0, &opregion->acpi->csts);
+ iowrite32(1, &opregion->acpi->drdy);
system_opregion = opregion;
register_acpi_notifier(&intel_opregion_notifier);
@@ -454,7 +462,7 @@ void intel_opregion_fini(struct drm_device *dev)
return;
if (opregion->acpi) {
- opregion->acpi->drdy = 0;
+ iowrite32(0, &opregion->acpi->drdy);
system_opregion = NULL;
unregister_acpi_notifier(&intel_opregion_notifier);
@@ -474,8 +482,9 @@ 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 *base;
+ void __iomem *base;
u32 asls, mboxes;
+ char buf[sizeof(OPREGION_SIGNATURE)];
int err = 0;
pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
@@ -489,7 +498,9 @@ int intel_opregion_setup(struct drm_device *dev)
if (!base)
return -ENOMEM;
- if (memcmp(base, OPREGION_SIGNATURE, 16)) {
+ memcpy_fromio(buf, base, sizeof(buf));
+
+ if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
DRM_DEBUG_DRIVER("opregion signature mismatch\n");
err = -EINVAL;
goto err_out;
@@ -499,7 +510,7 @@ int intel_opregion_setup(struct drm_device *dev)
opregion->lid_state = base + ACPI_CLID;
- mboxes = opregion->header->mboxes;
+ mboxes = ioread32(&opregion->header->mboxes);
if (mboxes & MBOX_ACPI) {
DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
opregion->acpi = base + OPREGION_ACPI_OFFSET;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.