intel_fb: enable Intel VBT lookup via ACPI

Fixes #2965

repos/dde_linux/intel_fb.list

@@ -128,6 +128,7 @@ linux-x.x.x/drivers/gpu/drm/i915/intel_lvds.c
 linux-x.x.x/drivers/gpu/drm/i915/intel_mocs.c
 linux-x.x.x/drivers/gpu/drm/i915/intel_mocs.h
 linux-x.x.x/drivers/gpu/drm/i915/intel_modes.c
+linux-x.x.x/drivers/gpu/drm/i915/intel_opregion.c
 linux-x.x.x/drivers/gpu/drm/i915/intel_opregion.h
 linux-x.x.x/drivers/gpu/drm/i915/intel_overlay.c
 linux-x.x.x/drivers/gpu/drm/i915/intel_panel.c

repos/dde_linux/lib/import/import-intel_fb_include.mk

@@ -25,3 +25,4 @@ INC_DIR += $(SRC_DIR)/include \
 
 CC_OPT += -U__linux__ -D__KERNEL__
 CC_OPT += -DCONFIG_DRM_I915_KMS -DCONFIG_I2C -DCONFIG_I2C_BOARDINFO
+CC_OPT += -DCONFIG_ACPI

repos/dde_linux/ports/dde_linux.hash

@@ -1 +1 @@
-b88acdf93d8db71180a25937fba45ec6b39a2841
+5ee7d9befaff281fec480e2257f302c76fe85126

repos/dde_linux/src/drivers/framebuffer/intel/dummies.c

@@ -1771,3 +1771,36 @@ int stop_machine(cpu_stop_fn_t a, void *b, const struct cpumask *c)
 	TRACE_AND_STOP;
 	return -1;
 }
+
+int unregister_acpi_notifier(struct notifier_block *nb)
+{
+	TRACE_AND_STOP;
+	return -1;
+}
+
+const struct acpi_device_id * i2c_acpi_match_device(const struct acpi_device_id *matches,
+                                                    struct i2c_client *client)
+{
+	TRACE_AND_STOP;
+	return 0;
+}
+
+static int i2c_acpi_notify(struct notifier_block *nb, unsigned long value, void *arg)
+{
+	TRACE_AND_STOP;
+	return -1;
+}
+
+struct notifier_block i2c_acpi_notifier = {
+	.notifier_call = i2c_acpi_notify,
+};
+
+void intel_unregister_dsm_handler(void)
+{
+	TRACE_AND_STOP;
+}
+
+enum acpi_backlight_type acpi_video_get_backlight_type(void)
+{
+	TRACE_AND_STOP;
+}

repos/dde_linux/src/drivers/framebuffer/intel/include/lx_emul.h

@@ -1231,10 +1231,30 @@ struct acpi_device;
 struct acpi_dev_node { struct acpi_device *companion; };
 
 
+/*********************
+ ** acpi/acpi_bus.h **
+ *********************/
+
+typedef char acpi_bus_id[8];
+typedef char acpi_device_class[20];
+
+struct acpi_bus_event {
+	struct list_head node;
+	acpi_device_class device_class;
+	acpi_bus_id bus_id;
+	u32 type;
+	u32 data;
+};
+
+
 /****************
  ** linux/io.h **
  ****************/
 
+enum {
+	MEMREMAP_WB = 1 << 0,
+};
+
 #define writel(value, addr) (*(volatile uint32_t *)(addr) = (value))
 #define readl(addr)         (*(volatile uint32_t *)(addr))
 
@@ -1563,8 +1583,6 @@ void vga_put(struct pci_dev *pdev, unsigned int rsrc);
  ** linux/notifier.h **
  **********************/
 
-#define NOTIFY_DONE 0x0000
-
 /* needed by intel_lvds.c */
 
 struct notifier_block;
@@ -1573,7 +1591,12 @@ typedef int (*notifier_fn_t)(struct notifier_block *nb, unsigned long action, vo
 
 struct notifier_block { notifier_fn_t notifier_call; };
 
-enum { NOTIFY_OK = 0x0001 };
+enum {
+	NOTIFY_DONE      = 0x0000,
+	NOTIFY_OK        = 0x0001,
+	NOTIFY_STOP_MASK = 0x8000,
+	NOTIFY_BAD       = (NOTIFY_STOP_MASK|0x0002),
+};
 
 struct atomic_notifier_head { unsigned dummy; };
 
@@ -1605,9 +1628,32 @@ static inline bool vgacon_text_force(void) { return false; }
  ** acpi/video.h **
  ******************/
 
+#define ACPI_VIDEO_CLASS "video"
+
 int acpi_video_register(void);
 void acpi_video_unregister(void);
 
+enum acpi_backlight_type {
+	acpi_backlight_native = 3,
+};
+enum acpi_backlight_type acpi_video_get_backlight_type(void);
+
+
+/******************
+ ** acpi/video.h **
+ ******************/
+
+int register_acpi_notifier(struct notifier_block *);
+int unregister_acpi_notifier(struct notifier_block *);
+
+
+/**********************
+ ** linux/memremap.h **
+ **********************/
+
+void *memremap(resource_size_t offset, size_t size, unsigned long flags);
+void memunmap(void *addr);
+
 
 /*****************
  ** asm/ioctl.h **

repos/dde_linux/src/drivers/framebuffer/intel/lx_emul.cc

@@ -1121,17 +1121,33 @@ void cpu_relax(void)
  ** drivers/pci/rom.c **
  ***********************/
 
+static Genode::Constructible<Genode::Attached_io_mem_dataspace> video_rom;
+
 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size)
 {
+	/* solely available in BIOS legacy mode ... */
 	enum { VIDEO_ROM_BASE = 0xC0000, VIDEO_ROM_SIZE = 0x20000 };
 
-	static Genode::Attached_io_mem_dataspace vrom(Lx_kit::env().env(),
-	                                              VIDEO_ROM_BASE, VIDEO_ROM_SIZE);
-	*size = VIDEO_ROM_SIZE;
-	return vrom.local_addr<void*>();
+	BUG_ON(video_rom.constructed());
+
+	try {
+		video_rom.construct(Lx_kit::env().env(), VIDEO_ROM_BASE, VIDEO_ROM_SIZE);
+		*size = VIDEO_ROM_SIZE;
+		return video_rom->local_addr<void*>();
+	} catch (...) {
+		Genode::warning("could not map ",
+		                Genode::Hex_range<Genode::addr_t>(VIDEO_ROM_BASE,
+		                                                  VIDEO_ROM_SIZE),
+		                " video rom region");
+	}
+
+	return nullptr;
 }
 
-void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom) {}
+void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom) {
+	BUG_ON(!video_rom.constructed());
+	video_rom.destruct();
+}
 
 
 /******************
@@ -1924,4 +1940,59 @@ u64 local_clock(void)
 	return jiffies_to_nsecs(jiffies);
 }
 
+
+/******************************************************************
+ ** ACPI related function called by Intel driver (-DCONFIG_ACPI) **
+ ******************************************************************/
+
+
+static Genode::Constructible<Genode::Attached_io_mem_dataspace> opregion;
+
+void *memremap(resource_size_t offset, size_t size, unsigned long flags)
+{
+	Genode::addr_t paddr = offset & ~0xfffUL;
+	Genode::addr_t psize = size + (offset & 0xfff);
+
+	BUG_ON(opregion.constructed());
+
+	try {
+		opregion.construct(Lx_kit::env().env(), paddr, psize);
+		return opregion->local_addr<uint8_t>() + (offset & 0xfff);
+	} catch (...) {
+		Genode::warning("could not map ",
+		                Genode::Hex_range<Genode::addr_t>(offset, size),
+		                " ACPI opregion");
+	}
+	return nullptr;
+}
+
+void memunmap(void *addr)
+{
+	BUG_ON(!opregion.constructed());
+	opregion.destruct();
+}
+
+
+void intel_register_dsm_handler(void)
+{
+	Genode::warning(__func__, " called");
+}
+
+void i2c_acpi_register_devices(struct i2c_adapter *adap)
+{
+	Genode::warning(__func__, " called");
+}
+
+int register_acpi_notifier(struct notifier_block *nb)
+{
+	Genode::warning(__func__, " called");
+	return 0;
+}
+
+int acpi_reconfig_notifier_register(struct notifier_block *nb)
+{
+	Genode::warning(__func__, " called");
+	return 0;
+}
+
 } /* extern "C" */

repos/dde_linux/src/include/lx_emul/pci.h

@@ -36,6 +36,7 @@ enum { PCI_ANY_ID = ~0U };
 typedef enum {
 	PCI_D0    = 0,
 	PCI_D1    = 1,
+	PCI_D2    = 2,
 	PCI_D3hot = 3,
 	PCI_D3cold = 4,
 } pci_power_t;