From: Matthew Garrett mjg@redhat.com
The Integrated Graphics Device opregion specification defines a mechanism for the OS and system firmware to collaborate on various graphics-related functionality. This is currently implemented in the i915 driver but isn't strictly limited to these devices. Move it to a more generic location and remove the i915 dependency, while simultaneously reworking i915 to make use of the new driver.
Signed-off-by: Matthew Garrett mjg@redhat.com Acked-by: Acked-by: Jesse Barnes jbarnes@virtuousgeek.org Cc: Alan Cox alan@linux.intel.com Cc: Keith Packard keithp@keithp.com Cc: Len Brown lenb@kernel.org [ickle: rebase onto drm-core-next] Signed-off-by: Chris Wilson chris@chris-wilson.co.uk ---
Note: neither the opregion_dev interface or the alse_set_* properly report failures. As such we have a slight change in behaviour on Ironlake+ platforms and an uncorrected bug for earlier chipsets. -Chris
--- drivers/acpi/Kconfig | 8 + drivers/acpi/Makefile | 1 + drivers/acpi/acpi_igd_opregion.c | 411 ++++++++++++++++++++++++++ drivers/gpu/drm/Kconfig | 1 + drivers/gpu/drm/i915/Makefile | 1 - drivers/gpu/drm/i915/i915_debugfs.c | 2 +- drivers/gpu/drm/i915/i915_dma.c | 13 +- drivers/gpu/drm/i915/i915_drv.c | 6 +- drivers/gpu/drm/i915/i915_drv.h | 34 +-- drivers/gpu/drm/i915/i915_irq.c | 7 +- drivers/gpu/drm/i915/intel_bios.c | 8 +- drivers/gpu/drm/i915/intel_lvds.c | 2 +- drivers/gpu/drm/i915/intel_opregion.c | 516 --------------------------------- drivers/gpu/drm/i915/intel_panel.c | 4 +- include/acpi/acpi_igd_opregion.h | 105 +++++++ 15 files changed, 552 insertions(+), 567 deletions(-) create mode 100644 drivers/acpi/acpi_igd_opregion.c delete mode 100644 drivers/gpu/drm/i915/intel_opregion.c create mode 100644 include/acpi/acpi_igd_opregion.h
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 2aa042a..7ace174 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -383,4 +383,12 @@ config ACPI_HED
source "drivers/acpi/apei/Kconfig"
+config ACPI_IGD_OPREGION + tristate "ACPI Integrated Graphics Device OpRegion support" + help + This driver adds support for the Intel ACPI Integrated Graphics + Device OpRegion specification, allowing communication between + the firmware and graphics driver on mobile systems with Intel + graphics + endif # ACPI diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index d113fa5..dcade4b 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -62,6 +62,7 @@ obj-$(CONFIG_ACPI_SBS) += sbs.o obj-$(CONFIG_ACPI_POWER_METER) += power_meter.o obj-$(CONFIG_ACPI_HED) += hed.o obj-$(CONFIG_ACPI_EC_DEBUGFS) += ec_sys.o +obj-$(CONFIG_ACPI_IGD_OPREGION) += acpi_igd_opregion.o
# processor has its own "processor." module_param namespace processor-y := processor_driver.o processor_throttling.o diff --git a/drivers/acpi/acpi_igd_opregion.c b/drivers/acpi/acpi_igd_opregion.c new file mode 100644 index 0000000..0015ca8 --- /dev/null +++ b/drivers/acpi/acpi_igd_opregion.c @@ -0,0 +1,411 @@ +/* + * 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 <linux/acpi_io.h> +#include <acpi/video.h> +#include <acpi/acpi_igd_opregion.h> +#include <drm/drmP.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) + +/* 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) + +/* 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 opregion_dev *dev, u32 bclp) +{ + struct opregion_asle *asle = dev->opregion.asle; + u32 max = dev->max_backlight; + + if (!(bclp & ASLE_BCLP_VALID)) + return ASLE_BACKLIGHT_FAILED; + + bclp &= ASLE_BCLP_MSK; + if (bclp > 255) + return ASLE_BACKLIGHT_FAILED; + + if (dev->set_backlight) + dev->set_backlight(dev->drm_dev, bclp * max / 255); + + asle->cblv = (bclp*0x64)/0xff | ASLE_CBLV_VALID; + + return 0; +} + +static u32 asle_set_als_illum(struct opregion_dev *dev, u32 alsi) +{ + if (dev->set_als_illum) + dev->set_als_illum(dev->drm_dev, alsi); + return 0; +} + +static u32 asle_set_pwm_freq(struct opregion_dev *dev, u32 pfmb) +{ + if (pfmb & ASLE_PFMB_PWM_VALID) { + if (dev->set_pwm_freq) + dev->set_pwm_freq(dev->drm_dev, pfmb); + } + return 0; +} + +static u32 asle_set_pfit(struct opregion_dev *dev, u32 pfit) +{ + if (!(pfit & ASLE_PFIT_VALID)) + return ASLE_PFIT_FAILED; + + if (dev->set_pfit) + dev->set_pfit(dev->drm_dev, pfit); + + return 0; +} + +void igd_opregion_intr(struct opregion_dev *dev) +{ + struct opregion_asle *asle = dev->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_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; +} +EXPORT_SYMBOL(igd_opregion_intr); + +#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 igd_opregion_enable_asle(struct opregion_dev *dev) +{ + struct opregion_asle *asle = dev->opregion.asle; + + if (asle && dev->enable_asle) { + dev->enable_asle(dev->drm_dev); + + asle->tche = ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN | + ASLE_PFMB_EN; + asle->ardy = 1; + } +} +EXPORT_SYMBOL(igd_opregion_enable_asle); + +#define ACPI_EV_DISPLAY_SWITCH (1<<0) +#define ACPI_EV_LID (1<<1) +#define ACPI_EV_DOCK (1<<2) + +static struct igd_opregion *system_opregion; + +static int igd_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 igd_opregion_notifier = { + .notifier_call = igd_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 igd_didl_outputs(struct opregion_dev *dev) +{ + struct igd_opregion *opregion = &dev->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; + int i = 0; + + handle = DEVICE_ACPI_HANDLE(&dev->drm_dev->pdev->dev); + if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &acpi_dev))) + return; + + if (acpi_is_video_device(acpi_dev)) + acpi_video_bus = acpi_dev; + else { + list_for_each_entry(acpi_cdev, &acpi_dev->children, node) { + if (acpi_is_video_device(acpi_cdev)) { + acpi_video_bus = acpi_cdev; + break; + } + } + } + + if (!acpi_video_bus) { + printk(KERN_WARNING "No ACPI video bus found\n"); + return; + } + + list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) { + if (i >= 8) { + dev_printk(KERN_ERR, &dev->drm_dev->pdev->dev, + "More than 8 outputs detected\n"); + return; + } + status = + acpi_evaluate_integer(acpi_cdev->handle, "_ADR", + NULL, &device_id); + if (ACPI_SUCCESS(status)) { + if (!device_id) + goto blind_set; + opregion->acpi->didl[i] = (u32)(device_id & 0x0f0f); + i++; + } + } + +end: + /* If fewer than 8 outputs, the list must be null terminated */ + if (i < 8) + opregion->acpi->didl[i] = 0; + return; + +blind_set: + i = 0; + list_for_each_entry(connector, &dev->drm_dev->mode_config.connector_list, head) { + int output_type = ACPI_OTHER_OUTPUT; + if (i >= 8) { + dev_printk(KERN_ERR, &dev->drm_dev->pdev->dev, + "More than 8 outputs detected\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; + } + opregion->acpi->didl[i] |= (1<<31) | output_type | i; + i++; + } + goto end; +} + +void igd_opregion_init(struct opregion_dev *dev) +{ + struct igd_opregion *opregion = &dev->opregion; + + if (!opregion->header) + return; + + if (opregion->acpi) { + if (drm_core_check_feature(dev->drm_dev, DRIVER_MODESET)) + igd_didl_outputs(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; + + system_opregion = opregion; + register_acpi_notifier(&igd_opregion_notifier); + } + + if (opregion->asle) + dev->enable_asle(dev->drm_dev); +} +EXPORT_SYMBOL(igd_opregion_init); + +void igd_opregion_fini(struct opregion_dev *dev) +{ + struct igd_opregion *opregion = &dev->opregion; + + if (!opregion->header) + return; + + if (opregion->acpi) { + opregion->acpi->drdy = 0; + + system_opregion = NULL; + unregister_acpi_notifier(&igd_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; +} +EXPORT_SYMBOL(igd_opregion_fini); +#endif + +int igd_opregion_setup(struct opregion_dev *dev) +{ + struct igd_opregion *opregion = &dev->opregion; + void *base; + u32 asls, mboxes; + int err = 0; + + pci_read_config_dword(dev->drm_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; + + 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; + + 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_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; + } + + return 0; + +err_out: + iounmap(base); + return err; +} +EXPORT_SYMBOL(igd_opregion_setup); diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index a6feb78c..501f4dc 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -99,6 +99,7 @@ config DRM_I915 select INPUT if ACPI select ACPI_VIDEO if ACPI select ACPI_BUTTON if ACPI + select ACPI_IGD_OPREGION if ACPI help Choose this option if you have a system that has "Intel Graphics Media Accelerator" or "HD Graphics" integrated graphics, diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 0ae6a7c..776c362 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -28,7 +28,6 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o \ intel_dvo.o \ intel_ringbuffer.o \ intel_overlay.o \ - intel_opregion.o \ dvo_ch7xxx.o \ dvo_ch7017.o \ dvo_ivch.o \ diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 09e0327..e67ff81 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1129,7 +1129,7 @@ static int i915_opregion(struct seq_file *m, void *unused) struct drm_info_node *node = (struct drm_info_node *) m->private; struct drm_device *dev = node->minor->dev; drm_i915_private_t *dev_priv = dev->dev_private; - struct intel_opregion *opregion = &dev_priv->opregion; + struct igd_opregion *opregion = &dev_priv->opregion_dev.opregion; int ret;
ret = mutex_lock_interruptible(&dev->struct_mutex); diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 7273037..ff057a8 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1990,7 +1990,14 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) /* Try to make sure MCHBAR is enabled before poking at it */ intel_setup_mchbar(dev); intel_setup_gmbus(dev); - intel_opregion_setup(dev); + + if (IS_MOBILE(dev)) { + dev_priv->opregion_dev.max_backlight = intel_panel_get_max_backlight(dev); + dev_priv->opregion_dev.set_backlight = intel_panel_set_backlight; + } + dev_priv->opregion_dev.enable_asle = intel_enable_asle; + dev_priv->opregion_dev.drm_dev = dev; + igd_opregion_setup(&dev_priv->opregion_dev);
/* Make sure the bios did its job and set up vital registers */ intel_setup_bios(dev); @@ -2049,7 +2056,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) }
/* Must be done after probing outputs */ - intel_opregion_init(dev); + igd_opregion_init(&dev_priv->opregion_dev); acpi_video_register();
setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed, @@ -2138,7 +2145,7 @@ int i915_driver_unload(struct drm_device *dev) if (dev->pdev->msi_enabled) pci_disable_msi(dev->pdev);
- intel_opregion_fini(dev); + igd_opregion_fini(&dev_priv->opregion_dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) { /* Flush any outstanding unpin_work. */ diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index c34a8dd..cf66ca8 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -316,7 +316,7 @@ static int i915_drm_freeze(struct drm_device *dev)
i915_save_state(dev);
- intel_opregion_fini(dev); + igd_opregion_fini(&dev_priv->opregion_dev);
/* Modeset on resume, not lid events */ dev_priv->modeset_on_lid = 0; @@ -366,7 +366,7 @@ static int i915_drm_thaw(struct drm_device *dev) }
i915_restore_state(dev); - intel_opregion_setup(dev); + igd_opregion_setup(&dev_priv->opregion_dev);
/* KMS EnterVT equivalent */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { @@ -386,7 +386,7 @@ static int i915_drm_thaw(struct drm_device *dev) ironlake_enable_rc6(dev); }
- intel_opregion_init(dev); + igd_opregion_init(&dev_priv->opregion_dev);
dev_priv->modeset_on_lid = 0;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 4496505..4d2475b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -36,6 +36,7 @@ #include <linux/io-mapping.h> #include <linux/i2c.h> #include <drm/intel-gtt.h> +#include <acpi/acpi_igd_opregion.h>
/* General customization: */ @@ -102,21 +103,6 @@ struct mem_block { struct drm_file *file_priv; /* NULL: free, -1: heap, other: real files */ };
-struct opregion_header; -struct opregion_acpi; -struct opregion_swsci; -struct opregion_asle; - -struct intel_opregion { - struct opregion_header *header; - struct opregion_acpi *acpi; - struct opregion_swsci *swsci; - struct opregion_asle *asle; - void *vbt; - u32 __iomem *lid_state; -}; -#define OPREGION_SIZE (8*1024) - struct intel_overlay; struct intel_overlay_error_state;
@@ -322,7 +308,7 @@ typedef struct drm_i915_private { int cfb_plane; int cfb_y;
- struct intel_opregion opregion; + struct opregion_dev opregion_dev;
/* overlay */ struct intel_overlay *overlay; @@ -1237,22 +1223,6 @@ extern inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter) } extern void intel_i2c_reset(struct drm_device *dev);
-/* intel_opregion.c */ -extern int intel_opregion_setup(struct drm_device *dev); -#ifdef CONFIG_ACPI -extern void intel_opregion_init(struct drm_device *dev); -extern void intel_opregion_fini(struct drm_device *dev); -extern void intel_opregion_asle_intr(struct drm_device *dev); -extern void intel_opregion_gse_intr(struct drm_device *dev); -extern void intel_opregion_enable_asle(struct drm_device *dev); -#else -static inline void intel_opregion_init(struct drm_device *dev) { return; } -static inline void intel_opregion_fini(struct drm_device *dev) { return; } -static inline void intel_opregion_asle_intr(struct drm_device *dev) { return; } -static inline void intel_opregion_gse_intr(struct drm_device *dev) { return; } -static inline void intel_opregion_enable_asle(struct drm_device *dev) { return; } -#endif - /* intel_acpi.c */ #ifdef CONFIG_ACPI extern void intel_register_dsm_handler(void); diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 188b497..8d9f406 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -496,7 +496,7 @@ static irqreturn_t ironlake_irq_handler(struct drm_device *dev) notify_ring(dev, &dev_priv->ring[BCS]);
if (de_iir & DE_GSE) - intel_opregion_gse_intr(dev); + igd_opregion_intr(&dev_priv->opregion_dev);
if (de_iir & DE_PLANEA_FLIP_DONE) { intel_prepare_page_flip(dev, 0); @@ -1203,9 +1203,8 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) blc_event = true; }
- if (blc_event || (iir & I915_ASLE_INTERRUPT)) - intel_opregion_asle_intr(dev); + igd_opregion_intr(&dev_priv->opregion_dev);
/* With MSI, interrupts are only generated when iir * transitions from zero to nonzero. If another bit got @@ -1762,7 +1761,7 @@ int i915_driver_irq_postinstall(struct drm_device *dev) I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); }
- intel_opregion_enable_asle(dev); + igd_opregion_enable_asle(&dev_priv->opregion_dev);
return 0; } diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index fb5b4d4..5123cf9 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -611,15 +611,15 @@ intel_parse_bios(struct drm_device *dev)
init_vbt_defaults(dev_priv);
- /* XXX Should this validation be moved to intel_opregion.c? */ - if (dev_priv->opregion.vbt) { - struct vbt_header *vbt = dev_priv->opregion.vbt; + /* XXX Should this validation be moved to acpi_igd_opregion.c? */ + if (dev_priv->opregion_dev.opregion.vbt) { + struct vbt_header *vbt = dev_priv->opregion_dev.opregion.vbt; if (memcmp(vbt->signature, "$VBT", 4) == 0) { DRM_DEBUG_DRIVER("Using VBT from OpRegion: %20s\n", vbt->signature); bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset); } else - dev_priv->opregion.vbt = NULL; + dev_priv->opregion_dev.opregion.vbt = NULL; }
if (bdb == NULL) { diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 1a311ad..a499e867e 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -828,7 +828,7 @@ static bool lvds_is_present_in_vbt(struct drm_device *dev, * additional data. Trust that if the VBT was written into * the OpRegion then they have validated the LVDS's existence. */ - if (dev_priv->opregion.vbt) + if (dev_priv->opregion_dev.opregion.vbt) return true; }
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c deleted file mode 100644 index d2c7104..0000000 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ /dev/null @@ -1,516 +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 <linux/acpi_io.h> -#include <acpi/video.h> - -#include "drmP.h" -#include "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)); - -/* 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) - -/* 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 *asle = dev_priv->opregion.asle; - u32 max; - - if (!(bclp & ASLE_BCLP_VALID)) - return ASLE_BACKLIGHT_FAILED; - - bclp &= ASLE_BCLP_MSK; - if (bclp > 255) - return ASLE_BACKLIGHT_FAILED; - - max = intel_panel_get_max_backlight(dev); - intel_panel_set_backlight(dev, bclp * max / 255); - asle->cblv = (bclp*0x64)/0xff | ASLE_CBLV_VALID; - - 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 */ - 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) -{ - /* Panel fitting is currently controlled by the X code, so this is a - noop until modesetting support works fully */ - if (!(pfit & ASLE_PFIT_VALID)) - return ASLE_PFIT_FAILED; - return 0; -} - -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; - 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_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; -} - -/* Only present on Ironlake+ */ -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; - 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_ALS_ILLUM) { - DRM_DEBUG_DRIVER("Illum is not supported\n"); - asle_stat |= ASLE_ALS_ILLUM_FAILED; - } - - if (asle_req & ASLE_SET_BACKLIGHT) - asle_stat |= asle_set_backlight(dev, asle->bclp); - - if (asle_req & ASLE_SET_PFIT) { - DRM_DEBUG_DRIVER("Pfit is not supported\n"); - asle_stat |= ASLE_PFIT_FAILED; - } - - if (asle_req & ASLE_SET_PWM_FREQ) { - DRM_DEBUG_DRIVER("PWM freq is not supported\n"); - asle_stat |= ASLE_PWM_FREQ_FAILED; - } - - 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 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; - - 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; - } -} - -#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. - 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, -}; - -/* - * 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; - int i = 0; - - handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev); - if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &acpi_dev))) - return; - - if (acpi_is_video_device(acpi_dev)) - acpi_video_bus = acpi_dev; - else { - list_for_each_entry(acpi_cdev, &acpi_dev->children, node) { - if (acpi_is_video_device(acpi_cdev)) { - acpi_video_bus = acpi_cdev; - break; - } - } - } - - if (!acpi_video_bus) { - printk(KERN_WARNING "No ACPI video bus found\n"); - return; - } - - list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) { - if (i >= 8) { - dev_printk (KERN_ERR, &dev->pdev->dev, - "More than 8 outputs detected\n"); - return; - } - status = - acpi_evaluate_integer(acpi_cdev->handle, "_ADR", - NULL, &device_id); - if (ACPI_SUCCESS(status)) { - if (!device_id) - goto blind_set; - opregion->acpi->didl[i] = (u32)(device_id & 0x0f0f); - i++; - } - } - -end: - /* If fewer than 8 outputs, the list must be null terminated */ - if (i < 8) - opregion->acpi->didl[i] = 0; - 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_printk (KERN_ERR, &dev->pdev->dev, - "More than 8 outputs detected\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; - } - opregion->acpi->didl[i] |= (1<<31) | output_type | i; - i++; - } - goto end; -} - -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); - - /* 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); - } - - if (opregion->asle) - intel_opregion_enable_asle(dev); -} - -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->acpi) { - 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->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 *base; - u32 asls, mboxes; - 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; - - 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_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; - } - - return 0; - -err_out: - iounmap(base); - return err; -} diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 4e5ff59..51565bb 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -261,8 +261,8 @@ intel_panel_detect(struct drm_device *dev) * appears to be either the BIOS or Linux ACPI fault */ #if 0 /* Assume that the BIOS does not lie through the OpRegion... */ - if (dev_priv->opregion.lid_state) - return ioread32(dev_priv->opregion.lid_state) & 0x1 ? + if (dev_priv->opregion_dev.opregion.acpi) + return ioread32(&dev_priv->opregion_dev.opregion.acpi->clid) & 0x1 ? connector_status_connected : connector_status_disconnected; #endif diff --git a/include/acpi/acpi_igd_opregion.h b/include/acpi/acpi_igd_opregion.h new file mode 100644 index 0000000..36fefd2 --- /dev/null +++ b/include/acpi/acpi_igd_opregion.h @@ -0,0 +1,105 @@ +#ifndef __ACPI_IGD_OPREGION_H__ +#define __ACPI_IGD_OPREGION_H__ + +#include <drm/drmP.h> + +#define OPREGION_SIZE (8*1024) + +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 { + u32 scic; /* SWSCI command|status|data */ + u32 parm; /* command parameters */ + u32 dslp; /* driver sleep time-out */ + u8 rsvd[244]; +} __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; + +struct igd_opregion { + struct opregion_header *header; + struct opregion_acpi *acpi; + struct opregion_swsci *swsci; + struct opregion_asle *asle; + void *vbt; +}; + +struct opregion_dev { + struct drm_device *drm_dev; + u32 max_backlight; + void (*set_backlight)(struct drm_device *dev, u32 value); + void (*set_als_illum)(struct drm_device *dev, u32 alsi); + void (*set_pwm_freq)(struct drm_device *dev, u32 pfmb); + void (*set_pfit)(struct drm_device *dev, u32 pfit); + void (*enable_asle)(struct drm_device *drm_dev); + struct igd_opregion opregion; +}; + +#if (defined CONFIG_ACPI_IGD_OPREGION || defined CONFIG_ACPI_IGD_OPREGION_MODULE) + +int igd_opregion_setup(struct opregion_dev *dev); +void igd_opregion_init(struct opregion_dev *dev); +void igd_opregion_fini(struct opregion_dev *dev); +void igd_opregion_intr(struct opregion_dev *dev); +void igd_opregion_enable_asle(struct opregion_dev *dev); + +#else + +static inline int igd_opregion_setup(struct opregion_dev *dev) +{ + return 0; +} + +static inline void igd_opregion_init(struct opregion_dev *dev) {}; +static inline void igd_opregion_fini(struct opregion_dev *dev) {}; +static inline void igd_opregion_intr(struct opregion_dev *dev) {}; +static inline void igd_opregion_enable_asle(struct opregion_dev *dev) {}; +#endif +#endif