Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
49 lines
1.0 KiB
ArmAsm
49 lines
1.0 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
*
|
|
* Copyright (C) 2007 Google, Inc.
|
|
* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
|
|
* Author: Brian Swetland <swetland@google.com>
|
|
*/
|
|
|
|
.macro addruart, rp, rv, tmp
|
|
ldr \rp, =CONFIG_DEBUG_UART_PHYS
|
|
ldr \rv, =CONFIG_DEBUG_UART_VIRT
|
|
.endm
|
|
|
|
.macro senduart, rd, rx
|
|
ARM_BE8(rev \rd, \rd )
|
|
@ Write the 1 character to UARTDM_TF
|
|
str \rd, [\rx, #0x70]
|
|
.endm
|
|
|
|
.macro waituartcts,rd,rx
|
|
.endm
|
|
|
|
.macro waituarttxrdy, rd, rx
|
|
@ check for TX_EMT in UARTDM_SR
|
|
ldr \rd, [\rx, #0x08]
|
|
ARM_BE8(rev \rd, \rd )
|
|
tst \rd, #0x08
|
|
bne 1002f
|
|
@ wait for TXREADY in UARTDM_ISR
|
|
1001: ldr \rd, [\rx, #0x14]
|
|
ARM_BE8(rev \rd, \rd )
|
|
tst \rd, #0x80
|
|
beq 1001b
|
|
1002:
|
|
@ Clear TX_READY by writing to the UARTDM_CR register
|
|
mov \rd, #0x300
|
|
ARM_BE8(rev \rd, \rd )
|
|
str \rd, [\rx, #0x10]
|
|
@ Write 0x1 to NCF register
|
|
mov \rd, #0x1
|
|
ARM_BE8(rev \rd, \rd )
|
|
str \rd, [\rx, #0x40]
|
|
@ UARTDM reg. Read to induce delay
|
|
ldr \rd, [\rx, #0x08]
|
|
.endm
|
|
|
|
.macro busyuart, rd, rx
|
|
.endm
|