serial: remove cris/etrax uart drivers

ETRAX FS UART

Required properties:

- compatible : "axis,etraxfs-uart"

- reg: offset and length of the register set for the device.

- interrupts: device interrupt

Optional properties:

- {dtr,dsr,rng,dcd}-gpios: specify a GPIO for DTR/DSR/RI/DCD

  line respectively.

Example:

serial@b00260000 {

	compatible = "axis,etraxfs-uart";

	reg = <0xb0026000 0x1000>;

	interrupts = <68>;

	dtr-gpios = <&sysgpio 0 GPIO_ACTIVE_LOW>;

	dsr-gpios = <&sysgpio 1 GPIO_ACTIVE_LOW>;

	rng-gpios = <&sysgpio 2 GPIO_ACTIVE_LOW>;

	dcd-gpios = <&sysgpio 3 GPIO_ACTIVE_LOW>;

};

	depends on SERIAL_VT8500=y

	select SERIAL_CORE_CONSOLE

config SERIAL_ETRAXFS

	bool "ETRAX FS serial port support"

	depends on ETRAX_ARCH_V32 && OF

	select SERIAL_CORE

	select SERIAL_MCTRL_GPIO if GPIOLIB

config SERIAL_ETRAXFS_CONSOLE

	bool "ETRAX FS serial console support"

	depends on SERIAL_ETRAXFS

	select SERIAL_CORE_CONSOLE

config SERIAL_NETX

	tristate "NetX serial port support"

	depends on ARCH_NETX

obj-$(CONFIG_SERIAL_MPSC) += mpsc.o

obj-$(CONFIG_SERIAL_MESON) += meson_uart.o

obj-$(CONFIG_SERIAL_SB1250_DUART) += sb1250-duart.o

obj-$(CONFIG_ETRAX_SERIAL) += crisv10.o

obj-$(CONFIG_SERIAL_ETRAXFS) += etraxfs-uart.o

obj-$(CONFIG_SERIAL_SCCNXP) += sccnxp.o

obj-$(CONFIG_SERIAL_SC16IS7XX_CORE) += sc16is7xx.o

obj-$(CONFIG_SERIAL_JSM) += jsm/

/* SPDX-License-Identifier: GPL-2.0 */

/*

 * serial.h: Arch-dep definitions for the Etrax100 serial driver.

 *

 * Copyright (C) 1998-2007 Axis Communications AB

 */

#ifndef _ETRAX_SERIAL_H

#define _ETRAX_SERIAL_H

#include <linux/circ_buf.h>

#include <asm/termios.h>

#include <asm/dma.h>

#include <arch/io_interface_mux.h>

/* Software state per channel */

#ifdef __KERNEL__

/*

 * This is our internal structure for each serial port's state.

 *

 * Many fields are paralleled by the structure used by the serial_struct

 * structure.

 *

 * For definitions of the flags field, see tty.h

 */

#define SERIAL_RECV_DESCRIPTORS 8

struct etrax_recv_buffer {

	struct etrax_recv_buffer *next;

	unsigned short length;

	unsigned char error;

	unsigned char pad;

	unsigned char buffer[0];

};

struct e100_serial {

	struct tty_port port;

	int baud;

	volatile u8	*ioport;	/* R_SERIALx_CTRL */

	u32		irq;	/* bitnr in R_IRQ_MASK2 for dmaX_descr */

	/* Output registers */

	volatile u8 *oclrintradr;	/* adr to R_DMA_CHx_CLR_INTR */

	volatile u32 *ofirstadr;	/* adr to R_DMA_CHx_FIRST */

	volatile u8 *ocmdadr;		/* adr to R_DMA_CHx_CMD */

	const volatile u8 *ostatusadr;	/* adr to R_DMA_CHx_STATUS */

	/* Input registers */

	volatile u8 *iclrintradr;	/* adr to R_DMA_CHx_CLR_INTR */

	volatile u32 *ifirstadr;	/* adr to R_DMA_CHx_FIRST */

	volatile u8 *icmdadr;		/* adr to R_DMA_CHx_CMD */

	volatile u32 *idescradr;	/* adr to R_DMA_CHx_DESCR */

	u8 rx_ctrl;	/* shadow for R_SERIALx_REC_CTRL */

	u8 tx_ctrl;	/* shadow for R_SERIALx_TR_CTRL */

	u8 iseteop;	/* bit number for R_SET_EOP for the input dma */

	int enabled;	/* Set to 1 if the port is enabled in HW config */

	u8 dma_out_enabled;	/* Set to 1 if DMA should be used */

	u8 dma_in_enabled;	/* Set to 1 if DMA should be used */

	/* end of fields defined in rs_table[] in .c-file */

	int		dma_owner;

	unsigned int	dma_in_nbr;

	unsigned int	dma_out_nbr;

	unsigned int	dma_in_irq_nbr;

	unsigned int	dma_out_irq_nbr;

	unsigned long	dma_in_irq_flags;

	unsigned long	dma_out_irq_flags;

	char		*dma_in_irq_description;

	char		*dma_out_irq_description;

	enum cris_io_interface io_if;

	char            *io_if_description;

	u8		uses_dma_in;  /* Set to 1 if DMA is used */

	u8		uses_dma_out; /* Set to 1 if DMA is used */

	u8		forced_eop;   /* a fifo eop has been forced */

	int			baud_base;     /* For special baudrates */

	int			custom_divisor; /* For special baudrates */

	struct etrax_dma_descr	tr_descr;

	struct etrax_dma_descr	rec_descr[SERIAL_RECV_DESCRIPTORS];

	int			cur_rec_descr;

	volatile int		tr_running; /* 1 if output is running */

	int			x_char;	/* xon/xoff character */

	unsigned long		event;

	int			line;

	int			type;  /* PORT_ETRAX */

	struct circ_buf		xmit;

	struct etrax_recv_buffer *first_recv_buffer;

	struct etrax_recv_buffer *last_recv_buffer;

	unsigned int		recv_cnt;

	unsigned int		max_recv_cnt;

	struct work_struct	work;

	struct async_icount	icount;   /* error-statistics etc.*/

	unsigned long char_time_usec;       /* The time for 1 char, in usecs */

	unsigned long flush_time_usec;      /* How often we should flush */

	unsigned long last_tx_active_usec;  /* Last tx usec in the jiffies */

	unsigned long last_tx_active;       /* Last tx time in jiffies */

	unsigned long last_rx_active_usec;  /* Last rx usec in the jiffies */

	unsigned long last_rx_active;       /* Last rx time in jiffies */

	int break_detected_cnt;

	int errorcode;

#ifdef CONFIG_ETRAX_RS485

	struct serial_rs485	rs485;  /* RS-485 support */

#endif

};

/* this PORT is not in the standard serial.h. it's not actually used for

 * anything since we only have one type of async serial-port anyway in this

 * system.

 */

#define PORT_ETRAX 1

/*

 * Events are used to schedule things to happen at timer-interrupt

 * time, instead of at rs interrupt time.

 */

#define RS_EVENT_WRITE_WAKEUP	0

#endif /* __KERNEL__ */

#endif /* !_ETRAX_SERIAL_H */