cregit-Linux how code gets into the kernel

Release 4.10 arch/arm/mach-sa1100/include/mach/shannon.h

#ifndef _INCLUDE_SHANNON_H

#define _INCLUDE_SHANNON_H

/* taken from comp.os.inferno Tue, 12 Sep 2000 09:21:50 GMT,
 * written by <forsyth@vitanuova.com> */


#define SHANNON_GPIO_SPI_FLASH		GPIO_GPIO (0)	
/* Output - Driven low, enables SPI to flash */

#define SHANNON_GPIO_SPI_DSP		GPIO_GPIO (1)	
/* Output - Driven low, enables SPI to DSP */
/* lcd lower = GPIO 2-9 */

#define SHANNON_GPIO_SPI_OUTPUT		GPIO_GPIO (10)	
/* Output - SPI output to DSP */

#define SHANNON_GPIO_SPI_INPUT		GPIO_GPIO (11)	
/* Input  - SPI input from DSP */

#define SHANNON_GPIO_SPI_CLOCK		GPIO_GPIO (12)	
/* Output - Clock for SPI */

#define SHANNON_GPIO_SPI_FRAME		GPIO_GPIO (13)	
/* Output - Frame marker - not used */

#define SHANNON_GPIO_SPI_RTS		GPIO_GPIO (14)	
/* Input  - SPI Ready to Send */

#define SHANNON_IRQ_GPIO_SPI_RTS	IRQ_GPIO14

#define SHANNON_GPIO_SPI_CTS		GPIO_GPIO (15)	
/* Output - SPI Clear to Send */

#define SHANNON_GPIO_IRQ_CODEC		GPIO_GPIO (16)	
/* in, irq from ucb1200 */

#define SHANNON_IRQ_GPIO_IRQ_CODEC	IRQ_GPIO16

#define SHANNON_GPIO_DSP_RESET		GPIO_GPIO (17)	
/* Output - Drive low to reset the DSP */

#define SHANNON_GPIO_CODEC_RESET	GPIO_GPIO (18)	
/* Output - Drive low to reset the UCB1x00 */

#define SHANNON_GPIO_U3_RTS		GPIO_GPIO (19)	
/* ?? */

#define SHANNON_GPIO_U3_CTS		GPIO_GPIO (20)	
/* ?? */

#define SHANNON_GPIO_SENSE_12V		GPIO_GPIO (21)	
/* Input, 12v flash unprotect detected */

#define SHANNON_GPIO_DISP_EN		22		
/* out */
/* XXX GPIO 23 unaccounted for */

#define SHANNON_GPIO_EJECT_0		24		
/* in */

#define SHANNON_GPIO_EJECT_1		25		
/* in */

#define SHANNON_GPIO_RDY_0		26		
/* in */

#define SHANNON_GPIO_RDY_1		27		
/* in */

/* MCP UCB codec GPIO pins... */


#define SHANNON_UCB_GPIO_BACKLIGHT	9

#define SHANNON_UCB_GPIO_BRIGHT_MASK  	7

#define SHANNON_UCB_GPIO_BRIGHT		6

#define SHANNON_UCB_GPIO_CONTRAST_MASK	0x3f

#define SHANNON_UCB_GPIO_CONTRAST	0

#endif

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