arch/arm/mach-pxa/mfp-pxa27x.h

Source file repositories/reference/linux-study-clean/arch/arm/mach-pxa/mfp-pxa27x.h

File Facts

System: Linux kernel
Corpus path: arch/arm/mach-pxa/mfp-pxa27x.h
Extension: .h
Size: 21917 bytes
Lines: 473
Domain: Architecture Layer
Bucket: arch/arm
Inferred role: Architecture Layer: implementation source
Status: source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
Touches IRQ or DMA behavior; this matters for the representative real-device path.

Dependency Surface

mfp-pxa2xx.h

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef __ASM_ARCH_MFP_PXA27X_H
#define __ASM_ARCH_MFP_PXA27X_H

/*
 * NOTE:  for those special-function bidirectional GPIOs, as described
 * in the "PXA27x Developer's Manual" Section 24.4.2.1, only its input
 * alternative is preserved, the direction is actually selected by the
 * specific controller, and this should work in most cases.
 */

#include "mfp-pxa2xx.h"

/* Note: GPIO3/GPIO4 will be driven by Power I2C when PCFR/PI2C_EN
 * bit is set, regardless of the GPIO configuration
 */
#define GPIO3_GPIO		MFP_CFG_IN(GPIO3, AF0)
#define GPIO4_GPIO		MFP_CFG_IN(GPIO4, AF0)

/* GPIO */
#define GPIO85_GPIO		MFP_CFG_IN(GPIO85, AF0)
#define GPIO86_GPIO		MFP_CFG_IN(GPIO86, AF0)
#define GPIO87_GPIO		MFP_CFG_IN(GPIO87, AF0)
#define GPIO88_GPIO		MFP_CFG_IN(GPIO88, AF0)
#define GPIO89_GPIO		MFP_CFG_IN(GPIO89, AF0)
#define GPIO90_GPIO		MFP_CFG_IN(GPIO90, AF0)
#define GPIO91_GPIO		MFP_CFG_IN(GPIO91, AF0)
#define GPIO92_GPIO		MFP_CFG_IN(GPIO92, AF0)
#define GPIO93_GPIO		MFP_CFG_IN(GPIO93, AF0)
#define GPIO94_GPIO		MFP_CFG_IN(GPIO94, AF0)
#define GPIO95_GPIO		MFP_CFG_IN(GPIO95, AF0)
#define GPIO96_GPIO		MFP_CFG_IN(GPIO96, AF0)
#define GPIO97_GPIO		MFP_CFG_IN(GPIO97, AF0)
#define GPIO98_GPIO		MFP_CFG_IN(GPIO98, AF0)
#define GPIO99_GPIO		MFP_CFG_IN(GPIO99, AF0)
#define GPIO100_GPIO		MFP_CFG_IN(GPIO100, AF0)
#define GPIO101_GPIO		MFP_CFG_IN(GPIO101, AF0)
#define GPIO102_GPIO		MFP_CFG_IN(GPIO102, AF0)
#define GPIO103_GPIO		MFP_CFG_IN(GPIO103, AF0)
#define GPIO104_GPIO		MFP_CFG_IN(GPIO104, AF0)
#define GPIO105_GPIO		MFP_CFG_IN(GPIO105, AF0)
#define GPIO106_GPIO		MFP_CFG_IN(GPIO106, AF0)
#define GPIO107_GPIO		MFP_CFG_IN(GPIO107, AF0)
#define GPIO108_GPIO		MFP_CFG_IN(GPIO108, AF0)
#define GPIO109_GPIO		MFP_CFG_IN(GPIO109, AF0)
#define GPIO110_GPIO		MFP_CFG_IN(GPIO110, AF0)
#define GPIO111_GPIO		MFP_CFG_IN(GPIO111, AF0)
#define GPIO112_GPIO		MFP_CFG_IN(GPIO112, AF0)
#define GPIO113_GPIO		MFP_CFG_IN(GPIO113, AF0)
#define GPIO114_GPIO		MFP_CFG_IN(GPIO114, AF0)
#define GPIO115_GPIO		MFP_CFG_IN(GPIO115, AF0)
#define GPIO116_GPIO		MFP_CFG_IN(GPIO116, AF0)
#define GPIO117_GPIO		MFP_CFG_IN(GPIO117, AF0)
#define GPIO118_GPIO		MFP_CFG_IN(GPIO118, AF0)
#define GPIO119_GPIO		MFP_CFG_IN(GPIO119, AF0)
#define GPIO120_GPIO		MFP_CFG_IN(GPIO120, AF0)

/* Crystal and Clock Signals */
#define GPIO9_HZ_CLK		MFP_CFG_OUT(GPIO9,  AF1, DRIVE_LOW)
#define GPIO10_HZ_CLK		MFP_CFG_OUT(GPIO10, AF1, DRIVE_LOW)
#define GPIO11_48_MHz		MFP_CFG_OUT(GPIO11, AF3, DRIVE_LOW)
#define GPIO12_48_MHz		MFP_CFG_OUT(GPIO12, AF3, DRIVE_LOW)
#define GPIO13_CLK_EXT		MFP_CFG_IN(GPIO13, AF1)

/* OS Timer Signals */
#define GPIO11_EXT_SYNC_0	MFP_CFG_IN(GPIO11, AF1)
#define GPIO12_EXT_SYNC_1	MFP_CFG_IN(GPIO12, AF1)
#define GPIO9_CHOUT_0		MFP_CFG_OUT(GPIO9,  AF3, DRIVE_LOW)
#define GPIO10_CHOUT_1		MFP_CFG_OUT(GPIO10, AF3, DRIVE_LOW)
#define GPIO11_CHOUT_0		MFP_CFG_OUT(GPIO11, AF1, DRIVE_LOW)
#define GPIO12_CHOUT_1		MFP_CFG_OUT(GPIO12, AF1, DRIVE_LOW)

/* SDRAM and Static Memory I/O Signals */
#define GPIO20_nSDCS_2		MFP_CFG_OUT(GPIO20, AF1, DRIVE_HIGH)
#define GPIO21_nSDCS_3		MFP_CFG_OUT(GPIO21, AF1, DRIVE_HIGH)
#define GPIO15_nCS_1		MFP_CFG_OUT(GPIO15, AF2, DRIVE_HIGH)
#define GPIO78_nCS_2		MFP_CFG_OUT(GPIO78, AF2, DRIVE_HIGH)
#define GPIO79_nCS_3		MFP_CFG_OUT(GPIO79, AF2, DRIVE_HIGH)
#define GPIO80_nCS_4		MFP_CFG_OUT(GPIO80, AF2, DRIVE_HIGH)
#define GPIO33_nCS_5		MFP_CFG_OUT(GPIO33, AF2, DRIVE_HIGH)

/* Miscellaneous I/O and DMA Signals */
#define GPIO21_DVAL_0		MFP_CFG_OUT(GPIO21, AF2, DRIVE_HIGH)
#define GPIO116_DVAL_0		MFP_CFG_OUT(GPIO116, AF1, DRIVE_HIGH)
#define GPIO33_DVAL_1		MFP_CFG_OUT(GPIO33, AF1, DRIVE_HIGH)
#define GPIO96_DVAL_1		MFP_CFG_OUT(GPIO96, AF2, DRIVE_HIGH)
#define GPIO18_RDY		MFP_CFG_IN(GPIO18, AF1)
#define GPIO20_DREQ_0		MFP_CFG_IN(GPIO20, AF1)
#define GPIO115_DREQ_0		MFP_CFG_IN(GPIO115, AF1)
#define GPIO80_DREQ_1		MFP_CFG_IN(GPIO80, AF1)
#define GPIO97_DREQ_1		MFP_CFG_IN(GPIO97, AF2)

Annotation

Immediate include surface: `mfp-pxa2xx.h`.
Atlas domain: Architecture Layer / arch/arm.
Implementation status: source implementation candidate.
IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.