threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
58 lines
1.2 KiB
ArmAsm
58 lines
1.2 KiB
ArmAsm
/*
|
|
* arch/arm/include/debug/8250.S
|
|
*
|
|
* Copyright (C) 1994-2013 Russell King
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/serial_reg.h>
|
|
|
|
.macro addruart, rp, rv, tmp
|
|
ldr \rp, =CONFIG_DEBUG_UART_PHYS
|
|
ldr \rv, =CONFIG_DEBUG_UART_VIRT
|
|
.endm
|
|
|
|
#ifdef CONFIG_DEBUG_UART_8250_WORD
|
|
.macro store, rd, rx:vararg
|
|
ARM_BE8(rev \rd, \rd)
|
|
str \rd, \rx
|
|
ARM_BE8(rev \rd, \rd)
|
|
.endm
|
|
|
|
.macro load, rd, rx:vararg
|
|
ldr \rd, \rx
|
|
ARM_BE8(rev \rd, \rd)
|
|
.endm
|
|
#else
|
|
.macro store, rd, rx:vararg
|
|
strb \rd, \rx
|
|
.endm
|
|
|
|
.macro load, rd, rx:vararg
|
|
ldrb \rd, \rx
|
|
.endm
|
|
#endif
|
|
|
|
#define UART_SHIFT CONFIG_DEBUG_UART_8250_SHIFT
|
|
|
|
.macro senduart,rd,rx
|
|
store \rd, [\rx, #UART_TX << UART_SHIFT]
|
|
.endm
|
|
|
|
.macro busyuart,rd,rx
|
|
1002: load \rd, [\rx, #UART_LSR << UART_SHIFT]
|
|
and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
|
|
teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
|
|
bne 1002b
|
|
.endm
|
|
|
|
.macro waituart,rd,rx
|
|
#ifdef CONFIG_DEBUG_UART_8250_FLOW_CONTROL
|
|
1001: load \rd, [\rx, #UART_MSR << UART_SHIFT]
|
|
tst \rd, #UART_MSR_CTS
|
|
beq 1001b
|
|
#endif
|
|
.endm
|