Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Hardware parameter area specific to Sharp SL series devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (c) 2005 Richard Purdie
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Based on Sharp's 2.4 kernel patches
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/mach/sharpsl_param.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/memory.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * Certain hardware parameters determined at the time of device manufacture,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * typically including LCD parameters are loaded by the bootloader at the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * address PARAM_BASE. As the kernel will overwrite them, we need to store
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * them early in the boot process, then pass them to the appropriate drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * Not all devices use all parameters but the format is common to all.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #ifdef CONFIG_ARCH_SA1100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define PARAM_BASE	0xe8ffc000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define param_start(x)	(void *)(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define PARAM_BASE	0xa0000a00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define param_start(x)	__va(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define MAGIC_CHG(a,b,c,d) ( ( d << 24 ) | ( c << 16 )  | ( b << 8 ) | a )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define COMADJ_MAGIC	MAGIC_CHG('C','M','A','D')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define UUID_MAGIC	MAGIC_CHG('U','U','I','D')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define TOUCH_MAGIC	MAGIC_CHG('T','U','C','H')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define AD_MAGIC	MAGIC_CHG('B','V','A','D')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define PHAD_MAGIC	MAGIC_CHG('P','H','A','D')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct sharpsl_param_info sharpsl_param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) EXPORT_SYMBOL(sharpsl_param);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) void sharpsl_save_param(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	memcpy(&sharpsl_param, param_start(PARAM_BASE), sizeof(struct sharpsl_param_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	if (sharpsl_param.comadj_keyword != COMADJ_MAGIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		sharpsl_param.comadj=-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	if (sharpsl_param.phad_keyword != PHAD_MAGIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		sharpsl_param.phadadj=-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	if (sharpsl_param.uuid_keyword != UUID_MAGIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		sharpsl_param.uuid[0]=-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	if (sharpsl_param.touch_keyword != TOUCH_MAGIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 		sharpsl_param.touch_xp=-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	if (sharpsl_param.adadj_keyword != AD_MAGIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 		sharpsl_param.adadj=-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)