drivers/media/platform/broadcom/bcm2835-unicam-regs.h

Source file repositories/reference/linux-study-clean/drivers/media/platform/broadcom/bcm2835-unicam-regs.h

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/broadcom/bcm2835-unicam-regs.h
Extension
.h
Size
7002 bytes
Lines
247
Domain
Driver Families
Bucket
drivers/media
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef VC4_REGS_UNICAM_H
#define VC4_REGS_UNICAM_H

#include <linux/bits.h>

/*
 * The following values are taken from files found within the code drop
 * made by Broadcom for the BCM21553 Graphics Driver, predominantly in
 * brcm_usrlib/dag/vmcsx/vcinclude/hardware_vc4.h.
 * They have been modified to be only the register offset.
 */
#define UNICAM_CTRL		0x000
#define UNICAM_STA		0x004
#define UNICAM_ANA		0x008
#define UNICAM_PRI		0x00c
#define UNICAM_CLK		0x010
#define UNICAM_CLT		0x014
#define UNICAM_DAT0		0x018
#define UNICAM_DAT1		0x01c
#define UNICAM_DAT2		0x020
#define UNICAM_DAT3		0x024
#define UNICAM_DLT		0x028
#define UNICAM_CMP0		0x02c
#define UNICAM_CMP1		0x030
#define UNICAM_CAP0		0x034
#define UNICAM_CAP1		0x038
#define UNICAM_ICTL		0x100
#define UNICAM_ISTA		0x104
#define UNICAM_IDI0		0x108
#define UNICAM_IPIPE		0x10c
#define UNICAM_IBSA0		0x110
#define UNICAM_IBEA0		0x114
#define UNICAM_IBLS		0x118
#define UNICAM_IBWP		0x11c
#define UNICAM_IHWIN		0x120
#define UNICAM_IHSTA		0x124
#define UNICAM_IVWIN		0x128
#define UNICAM_IVSTA		0x12c
#define UNICAM_ICC		0x130
#define UNICAM_ICS		0x134
#define UNICAM_IDC		0x138
#define UNICAM_IDPO		0x13c
#define UNICAM_IDCA		0x140
#define UNICAM_IDCD		0x144
#define UNICAM_IDS		0x148
#define UNICAM_DCS		0x200
#define UNICAM_DBSA0		0x204
#define UNICAM_DBEA0		0x208
#define UNICAM_DBWP		0x20c
#define UNICAM_DBCTL		0x300
#define UNICAM_IBSA1		0x304
#define UNICAM_IBEA1		0x308
#define UNICAM_IDI1		0x30c
#define UNICAM_DBSA1		0x310
#define UNICAM_DBEA1		0x314
#define UNICAM_MISC		0x400

/*
 * The following bitmasks are from the kernel released by Broadcom
 * for Android - https://android.googlesource.com/kernel/bcm/
 * The Rhea, Hawaii, and Java chips all contain the same VideoCore4
 * Unicam block as BCM2835, as defined in eg
 * arch/arm/mach-rhea/include/mach/rdb_A0/brcm_rdb_cam.h and similar.
 * Values reworked to use the kernel BIT and GENMASK macros.
 *
 * Some of the bit mnenomics have been amended to match the datasheet.
 */
/* UNICAM_CTRL Register */
#define UNICAM_CPE		BIT(0)
#define UNICAM_MEM		BIT(1)
#define UNICAM_CPR		BIT(2)
#define UNICAM_CPM_MASK		GENMASK(3, 3)
#define UNICAM_CPM_CSI2		0
#define UNICAM_CPM_CCP2		1
#define UNICAM_SOE		BIT(4)
#define UNICAM_DCM_MASK		GENMASK(5, 5)
#define UNICAM_DCM_STROBE	0
#define UNICAM_DCM_DATA		1
#define UNICAM_SLS		BIT(6)
#define UNICAM_PFT_MASK		GENMASK(11, 8)
#define UNICAM_OET_MASK		GENMASK(20, 12)

/* UNICAM_STA Register */
#define UNICAM_SYN		BIT(0)
#define UNICAM_CS		BIT(1)
#define UNICAM_SBE		BIT(2)
#define UNICAM_PBE		BIT(3)
#define UNICAM_HOE		BIT(4)
#define UNICAM_PLE		BIT(5)
#define UNICAM_SSC		BIT(6)

Annotation

Implementation Notes