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-rw-r--r--linux-core/Makefile.kernel3
-rw-r--r--linux-core/i915_drv.c4
-rw-r--r--linux-core/i915_opregion.c386
3 files changed, 392 insertions, 1 deletions
diff --git a/linux-core/Makefile.kernel b/linux-core/Makefile.kernel
index b9f078dd..45a6b1f9 100644
--- a/linux-core/Makefile.kernel
+++ b/linux-core/Makefile.kernel
@@ -20,7 +20,8 @@ r128-objs := r128_drv.o r128_cce.o r128_state.o r128_irq.o
mga-objs := mga_drv.o mga_dma.o mga_state.o mga_warp.o mga_irq.o
i810-objs := i810_drv.o i810_dma.o
i915-objs := i915_drv.o i915_dma.o i915_irq.o i915_mem.o i915_fence.o \
- i915_buffer.o i915_compat.o i915_execbuf.o i915_suspend.o
+ i915_buffer.o i915_compat.o i915_execbuf.o i915_suspend.o \
+ i915_opregion.o
nouveau-objs := nouveau_drv.o nouveau_state.o nouveau_fifo.o nouveau_mem.o \
nouveau_object.o nouveau_irq.o nouveau_notifier.o nouveau_swmthd.o \
nouveau_sgdma.o nouveau_dma.o nouveau_bo.o nouveau_fence.o \
diff --git a/linux-core/i915_drv.c b/linux-core/i915_drv.c
index be25239d..abb45de7 100644
--- a/linux-core/i915_drv.c
+++ b/linux-core/i915_drv.c
@@ -80,6 +80,8 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
i915_save_state(dev);
+ intel_opregion_free(dev);
+
if (state.event == PM_EVENT_SUSPEND) {
/* Shut down the device */
pci_disable_device(dev->pdev);
@@ -99,6 +101,8 @@ static int i915_resume(struct drm_device *dev)
i915_restore_state(dev);
+ intel_opregion_init(dev);
+
return 0;
}
diff --git a/linux-core/i915_opregion.c b/linux-core/i915_opregion.c
new file mode 100644
index 00000000..e691571a
--- /dev/null
+++ b/linux-core/i915_opregion.c
@@ -0,0 +1,386 @@
+/*
+ *
+ * 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"
+
+#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) {
+ u32 pipeb_stats = I915_READ(PIPEBSTAT);
+ if (IS_MOBILE(dev)) {
+ /* Some hardware uses the legacy backlight controller
+ to signal interrupts, so we need to set up pipe B
+ to generate an IRQ on writes */
+ I915_WRITE(PIPEBSTAT, pipeb_stats |=
+ I915_LEGACY_BLC_EVENT_ENABLE);
+ dev_priv->irq_enable_reg |=
+ (I915_ASLE_INTERRUPT
+ | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT);
+ } else
+ dev_priv->irq_enable_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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 21:41:40 +0000