// SPDX-License-Identifier: GPL-2.0
/*
* Freescale QUICC Engine UART device driver
*
* Author: Timur Tabi <timur@freescale.com>
*
* Copyright 2007 Freescale Semiconductor, Inc.
*
* This driver adds support for UART devices via Freescale's QUICC Engine
* found on some Freescale SOCs.
*
* If Soft-UART support is needed but not already present, then this driver
* will request and upload the "Soft-UART" microcode upon probe. The
* filename of the microcode should be fsl_qe_ucode_uart_X_YZ.bin, where "X"
* is the name of the SOC (e.g. 8323), and YZ is the revision of the SOC,
* (e.g. "11" for 1.1).
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/dma-mapping.h>
#include <soc/fsl/qe/ucc_slow.h>
#include <linux/firmware.h>
#include <soc/fsl/cpm.h>
#ifdef CONFIG_PPC32
#include <asm/reg.h> /* mfspr, SPRN_SVR */
#endif
/*
* The GUMR flag for Soft UART. This would normally be defined in qe.h,
* but Soft-UART is a hack and we want to keep everything related to it in
* this file.
*/
#define UCC_SLOW_GUMR_H_SUART 0x00004000 /* Soft-UART */
/*
* soft_uart is 1 if we need to use Soft-UART mode
*/
