drivers/media/platform/samsung/s5p-jpeg/jpeg-regs.h

Source file repositories/reference/linux-study-clean/drivers/media/platform/samsung/s5p-jpeg/jpeg-regs.h

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/samsung/s5p-jpeg/jpeg-regs.h
Extension
.h
Size
22801 bytes
Lines
647
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 JPEG_REGS_H_
#define JPEG_REGS_H_

/* Register and bit definitions for S5PC210 */

/* JPEG mode register */
#define S5P_JPGMOD			0x00
#define S5P_PROC_MODE_MASK		(0x1 << 3)
#define S5P_PROC_MODE_DECOMPR		(0x1 << 3)
#define S5P_PROC_MODE_COMPR		(0x0 << 3)
#define S5P_SUBSAMPLING_MODE_MASK	0x7
#define S5P_SUBSAMPLING_MODE_444	(0x0 << 0)
#define S5P_SUBSAMPLING_MODE_422	(0x1 << 0)
#define S5P_SUBSAMPLING_MODE_420	(0x2 << 0)
#define S5P_SUBSAMPLING_MODE_GRAY	(0x3 << 0)

/* JPEG operation status register */
#define S5P_JPGOPR			0x04

/* Quantization tables*/
#define S5P_JPG_QTBL			0x08
#define S5P_QT_NUMt_SHIFT(t)		(((t) - 1) << 1)
#define S5P_QT_NUMt_MASK(t)		(0x3 << S5P_QT_NUMt_SHIFT(t))

/* Huffman tables */
#define S5P_JPG_HTBL			0x0c
#define S5P_HT_NUMt_AC_SHIFT(t)		(((t) << 1) - 1)
#define S5P_HT_NUMt_AC_MASK(t)		(0x1 << S5P_HT_NUMt_AC_SHIFT(t))

#define S5P_HT_NUMt_DC_SHIFT(t)		(((t) - 1) << 1)
#define S5P_HT_NUMt_DC_MASK(t)		(0x1 << S5P_HT_NUMt_DC_SHIFT(t))

/* JPEG restart interval register upper byte */
#define S5P_JPGDRI_U			0x10

/* JPEG restart interval register lower byte */
#define S5P_JPGDRI_L			0x14

/* JPEG vertical resolution register upper byte */
#define S5P_JPGY_U			0x18

/* JPEG vertical resolution register lower byte */
#define S5P_JPGY_L			0x1c

/* JPEG horizontal resolution register upper byte */
#define S5P_JPGX_U			0x20

/* JPEG horizontal resolution register lower byte */
#define S5P_JPGX_L			0x24

/* JPEG byte count register upper byte */
#define S5P_JPGCNT_U			0x28

/* JPEG byte count register middle byte */
#define S5P_JPGCNT_M			0x2c

/* JPEG byte count register lower byte */
#define S5P_JPGCNT_L			0x30

/* JPEG interrupt setting register */
#define S5P_JPGINTSE			0x34
#define S5P_RSTm_INT_EN_MASK		(0x1 << 7)
#define S5P_RSTm_INT_EN			(0x1 << 7)
#define S5P_DATA_NUM_INT_EN_MASK	(0x1 << 6)
#define S5P_DATA_NUM_INT_EN		(0x1 << 6)
#define S5P_FINAL_MCU_NUM_INT_EN_MASK	(0x1 << 5)
#define S5P_FINAL_MCU_NUM_INT_EN	(0x1 << 5)

/* JPEG interrupt status register */
#define S5P_JPGINTST			0x38
#define S5P_RESULT_STAT_SHIFT		6
#define S5P_RESULT_STAT_MASK		(0x1 << S5P_RESULT_STAT_SHIFT)
#define S5P_STREAM_STAT_SHIFT		5
#define S5P_STREAM_STAT_MASK		(0x1 << S5P_STREAM_STAT_SHIFT)

/* JPEG command register */
#define S5P_JPGCOM			0x4c
#define S5P_INT_RELEASE			(0x1 << 2)

/* Raw image data r/w address register */
#define S5P_JPG_IMGADR			0x50

/* JPEG file r/w address register */
#define S5P_JPG_JPGADR			0x58

/* Coefficient for RGB-to-YCbCr converter register */
#define S5P_JPG_COEF(n)			(0x5c + (((n) - 1) << 2))
#define S5P_COEFn_SHIFT(j)		((3 - (j)) << 3)
#define S5P_COEFn_MASK(j)		(0xff << S5P_COEFn_SHIFT(j))

Annotation

Implementation Notes