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authorRodrigo Vivi <[email protected]>2018-07-23 09:13:12 -0700
committerRodrigo Vivi <[email protected]>2018-07-23 09:13:12 -0700
commitc74a7469f97c0f40b46e82ee979f9fb1bb6e847c (patch)
treef2690a1a916b73ef94657fbf0e0141ae57701825 /drivers/firmware/google/coreboot_table.h
parent6f15a7de86c8cf2dc09fc9e6d07047efa40ef809 (diff)
parent500775074f88d9cf5416bed2ca19592812d62c41 (diff)
Merge drm/drm-next into drm-intel-next-queued
We need a backmerge to get DP_DPCD_REV_14 before we push other i915 changes to dinq that could break compilation. Signed-off-by: Rodrigo Vivi <[email protected]>
Diffstat (limited to 'drivers/firmware/google/coreboot_table.h')
-rw-r--r--drivers/firmware/google/coreboot_table.h72
1 files changed, 61 insertions, 11 deletions
diff --git a/drivers/firmware/google/coreboot_table.h b/drivers/firmware/google/coreboot_table.h
index 6eff1ae0c5d3..8ad95a94481b 100644
--- a/drivers/firmware/google/coreboot_table.h
+++ b/drivers/firmware/google/coreboot_table.h
@@ -3,7 +3,9 @@
*
* Internal header for coreboot table access.
*
+ * Copyright 2014 Gerd Hoffmann <[email protected]>
* Copyright 2017 Google Inc.
+ * Copyright 2017 Samuel Holland <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2.0 as published by
@@ -20,14 +22,6 @@
#include <linux/io.h>
-/* List of coreboot entry structures that is used */
-struct lb_cbmem_ref {
- uint32_t tag;
- uint32_t size;
-
- uint64_t cbmem_addr;
-};
-
/* Coreboot table header structure */
struct coreboot_table_header {
char signature[4];
@@ -38,11 +32,67 @@ struct coreboot_table_header {
u32 table_entries;
};
-/* Retrieve coreboot table entry with tag *tag* and copy it to data */
-int coreboot_table_find(int tag, void *data, size_t data_size);
+/* List of coreboot entry structures that is used */
+/* Generic */
+struct coreboot_table_entry {
+ u32 tag;
+ u32 size;
+};
+
+/* Points to a CBMEM entry */
+struct lb_cbmem_ref {
+ u32 tag;
+ u32 size;
+
+ u64 cbmem_addr;
+};
+
+/* Describes framebuffer setup by coreboot */
+struct lb_framebuffer {
+ u32 tag;
+ u32 size;
+
+ u64 physical_address;
+ u32 x_resolution;
+ u32 y_resolution;
+ u32 bytes_per_line;
+ u8 bits_per_pixel;
+ u8 red_mask_pos;
+ u8 red_mask_size;
+ u8 green_mask_pos;
+ u8 green_mask_size;
+ u8 blue_mask_pos;
+ u8 blue_mask_size;
+ u8 reserved_mask_pos;
+ u8 reserved_mask_size;
+};
+
+/* A device, additionally with information from coreboot. */
+struct coreboot_device {
+ struct device dev;
+ union {
+ struct coreboot_table_entry entry;
+ struct lb_cbmem_ref cbmem_ref;
+ struct lb_framebuffer framebuffer;
+ };
+};
+
+/* A driver for handling devices described in coreboot tables. */
+struct coreboot_driver {
+ int (*probe)(struct coreboot_device *);
+ int (*remove)(struct coreboot_device *);
+ struct device_driver drv;
+ u32 tag;
+};
+
+/* Register a driver that uses the data from a coreboot table. */
+int coreboot_driver_register(struct coreboot_driver *driver);
+
+/* Unregister a driver that uses the data from a coreboot table. */
+void coreboot_driver_unregister(struct coreboot_driver *driver);
/* Initialize coreboot table module given a pointer to iomem */
-int coreboot_table_init(void __iomem *ptr);
+int coreboot_table_init(struct device *dev, void __iomem *ptr);
/* Cleanup coreboot table module */
int coreboot_table_exit(void);