Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pul removal of obsolete architecture ports from Arnd Bergmann:
 "This removes the entire architecture code for blackfin, cris, frv,
  m32r, metag, mn10300, score, and tile, including the associated device
  drivers.

  I have been working with the (former) maintainers for each one to
  ensure that my interpretation was right and the code is definitely
  unused in mainline kernels. Many had fond memories of working on the
  respective ports to start with and getting them included in upstream,
  but also saw no point in keeping the port alive without any users.

  In the end, it seems that while the eight architectures are extremely
  different, they all suffered the same fate: There was one company in
  charge of an SoC line, a CPU microarchitecture and a software
  ecosystem, which was more costly than licensing newer off-the-shelf
  CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
  seems that all the SoC product lines are still around, but have not
  used the custom CPU architectures for several years at this point. In
  contrast, CPU instruction sets that remain popular and have actively
  maintained kernel ports tend to all be used across multiple licensees.

  [ See the new nds32 port merged in the previous commit for the next
    generation of "one company in charge of an SoC line, a CPU
    microarchitecture and a software ecosystem"   - Linus ]

  The removal came out of a discussion that is now documented at
  https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
  marking any ports as deprecated but remove them all at once after I
  made sure that they are all unused. Some architectures (notably tile,
  mn10300, and blackfin) are still being shipped in products with old
  kernels, but those products will never be updated to newer kernel
  releases.

  After this series, we still have a few architectures without mainline
  gcc support:

   - unicore32 and hexagon both have very outdated gcc releases, but the
     maintainers promised to work on providing something newer. At least
     in case of hexagon, this will only be llvm, not gcc.

   - openrisc, risc-v and nds32 are still in the process of finishing
     their support or getting it added to mainline gcc in the first
     place. They all have patched gcc-7.3 ports that work to some
     degree, but complete upstream support won't happen before gcc-8.1.
     Csky posted their first kernel patch set last week, their situation
     will be similar

  [ Palmer Dabbelt points out that RISC-V support is in mainline gcc
    since gcc-7, although gcc-7.3.0 is the recommended minimum  - Linus ]"

This really says it all:

 2498 files changed, 95 insertions(+), 467668 deletions(-)

* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
  MAINTAINERS: UNICORE32: Change email account
  staging: iio: remove iio-trig-bfin-timer driver
  tty: hvc: remove tile driver
  tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
  serial: remove tile uart driver
  serial: remove m32r_sio driver
  serial: remove blackfin drivers
  serial: remove cris/etrax uart drivers
  usb: Remove Blackfin references in USB support
  usb: isp1362: remove blackfin arch glue
  usb: musb: remove blackfin port
  usb: host: remove tilegx platform glue
  pwm: remove pwm-bfin driver
  i2c: remove bfin-twi driver
  spi: remove blackfin related host drivers
  watchdog: remove bfin_wdt driver
  can: remove bfin_can driver
  mmc: remove bfin_sdh driver
  input: misc: remove blackfin rotary driver
  input: keyboard: remove bf54x driver
  ...

19 files changed, 0 insertions, 11368 deletions

diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index b811442c5ce6..e5041c605fd0 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -151,19 +151,6 @@ config LEGACY_PTY_COUNT
 	  When not in use, each legacy PTY occupies 12 bytes on 32-bit
 	  architectures and 24 bytes on 64-bit architectures.
 
-config BFIN_JTAG_COMM
-	tristate "Blackfin JTAG Communication"
-	depends on BLACKFIN
-	help
-	  Add support for emulating a TTY device over the Blackfin JTAG.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called bfin_jtag_comm.
-
-config BFIN_JTAG_COMM_CONSOLE
-	bool "Console on Blackfin JTAG"
-	depends on BFIN_JTAG_COMM=y
-
 config SERIAL_NONSTANDARD
 	bool "Non-standard serial port support"
 	depends on HAS_IOMEM
@@ -402,19 +389,6 @@ config GOLDFISH_TTY_EARLY_CONSOLE
 	default y if GOLDFISH_TTY=y
 	select SERIAL_EARLYCON
 
-config DA_TTY
-	bool "DA TTY"
-	depends on METAG_DA
-	select SERIAL_NONSTANDARD
-	help
-	  This enables a TTY on a Dash channel.
-
-config DA_CONSOLE
-	bool "DA Console"
-	depends on DA_TTY
-	help
-	  This enables a console on a Dash channel.
-
 config MIPS_EJTAG_FDC_TTY
 	bool "MIPS EJTAG Fast Debug Channel TTY"
 	depends on MIPS_CDMM
diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index 8ce3a8661b31..c72cafdf32b4 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -20,7 +20,6 @@ obj-$(CONFIG_SERIAL_DEV_BUS)	+= serdev/
 
 # tty drivers
 obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o
-obj-$(CONFIG_BFIN_JTAG_COMM)	+= bfin_jtag_comm.o
 obj-$(CONFIG_CYCLADES)		+= cyclades.o
 obj-$(CONFIG_ISI)		+= isicom.o
 obj-$(CONFIG_MOXA_INTELLIO)	+= moxa.o
@@ -32,7 +31,6 @@ obj-$(CONFIG_SYNCLINKMP)	+= synclinkmp.o
 obj-$(CONFIG_SYNCLINK)		+= synclink.o
 obj-$(CONFIG_PPC_EPAPR_HV_BYTECHAN) += ehv_bytechan.o
 obj-$(CONFIG_GOLDFISH_TTY)	+= goldfish.o
-obj-$(CONFIG_DA_TTY)		+= metag_da.o
 obj-$(CONFIG_MIPS_EJTAG_FDC_TTY) += mips_ejtag_fdc.o
 obj-$(CONFIG_VCC)		+= vcc.o
 
diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c
deleted file mode 100644
index c369bf27a67b..000000000000
--- a/drivers/tty/bfin_jtag_comm.c
+++ /dev/null
@@ -1,353 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * TTY over Blackfin JTAG Communication
- *
- * Copyright 2008-2009 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-#define DRV_NAME "bfin-jtag-comm"
-#define DEV_NAME "ttyBFJC"
-#define pr_fmt(fmt) DRV_NAME ": " fmt
-
-#include <linux/circ_buf.h>
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/kernel.h>
-#include <linux/kthread.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/atomic.h>
-
-#define pr_init(fmt, args...) ({ static const __initconst char __fmt[] = fmt; printk(__fmt, ## args); })
-
-/* See the Debug/Emulation chapter in the HRM */
-#define EMUDOF   0x00000001	/* EMUDAT_OUT full & valid */
-#define EMUDIF   0x00000002	/* EMUDAT_IN full & valid */
-#define EMUDOOVF 0x00000004	/* EMUDAT_OUT overflow */
-#define EMUDIOVF 0x00000008	/* EMUDAT_IN overflow */
-
-static inline uint32_t bfin_write_emudat(uint32_t emudat)
-{
-	__asm__ __volatile__("emudat = %0;" : : "d"(emudat));
-	return emudat;
-}
-
-static inline uint32_t bfin_read_emudat(void)
-{
-	uint32_t emudat;
-	__asm__ __volatile__("%0 = emudat;" : "=d"(emudat));
-	return emudat;
-}
-
-static inline uint32_t bfin_write_emudat_chars(char a, char b, char c, char d)
-{
-	return bfin_write_emudat((a << 0) | (b << 8) | (c << 16) | (d << 24));
-}
-
-#define CIRC_SIZE 2048	/* see comment in tty_io.c:do_tty_write() */
-#define CIRC_MASK (CIRC_SIZE - 1)
-#define circ_empty(circ)     ((circ)->head == (circ)->tail)
-#define circ_free(circ)      CIRC_SPACE((circ)->head, (circ)->tail, CIRC_SIZE)
-#define circ_cnt(circ)       CIRC_CNT((circ)->head, (circ)->tail, CIRC_SIZE)
-#define circ_byte(circ, idx) ((circ)->buf[(idx) & CIRC_MASK])
-
-static struct tty_driver *bfin_jc_driver;
-static struct task_struct *bfin_jc_kthread;
-static struct tty_port port;
-static volatile struct circ_buf bfin_jc_write_buf;
-
-static int
-bfin_jc_emudat_manager(void *arg)
-{
-	uint32_t inbound_len = 0, outbound_len = 0;
-
-	while (!kthread_should_stop()) {
-		struct tty_struct *tty = tty_port_tty_get(&port);
-		/* no one left to give data to, so sleep */
-		if (tty == NULL && circ_empty(&bfin_jc_write_buf)) {
-			pr_debug("waiting for readers\n");
-			__set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule();
-			continue;
-		}
-
-		/* no data available, so just chill */
-		if (!(bfin_read_DBGSTAT() & EMUDIF) && circ_empty(&bfin_jc_write_buf)) {
-			pr_debug("waiting for data (in_len = %i) (circ: %i %i)\n",
-				inbound_len, bfin_jc_write_buf.tail, bfin_jc_write_buf.head);
-			tty_kref_put(tty);
-			if (inbound_len)
-				schedule();
-			else
-				schedule_timeout_interruptible(HZ);
-			continue;
-		}
-
-		/* if incoming data is ready, eat it */
-		if (bfin_read_DBGSTAT() & EMUDIF) {
-			uint32_t emudat = bfin_read_emudat();
-			if (inbound_len == 0) {
-				pr_debug("incoming length: 0x%08x\n", emudat);
-				inbound_len = emudat;
-			} else {
-				size_t num_chars = (4 <= inbound_len ? 4 : inbound_len);
-				pr_debug("  incoming data: 0x%08x (pushing %zu)\n", emudat, num_chars);
-				inbound_len -= num_chars;
-				tty_insert_flip_string(&port, (unsigned char *)&emudat, num_chars);
-				tty_flip_buffer_push(&port);
-			}
-		}
-
-		/* if outgoing data is ready, post it */
-		if (!(bfin_read_DBGSTAT() & EMUDOF) && !circ_empty(&bfin_jc_write_buf)) {
-			if (outbound_len == 0) {
-				outbound_len = circ_cnt(&bfin_jc_write_buf);
-				bfin_write_emudat(outbound_len);
-				pr_debug("outgoing length: 0x%08x\n", outbound_len);
-			} else {
-				int tail = bfin_jc_write_buf.tail;
-				size_t ate = (4 <= outbound_len ? 4 : outbound_len);
-				uint32_t emudat =
-				bfin_write_emudat_chars(
-					circ_byte(&bfin_jc_write_buf, tail + 0),
-					circ_byte(&bfin_jc_write_buf, tail + 1),
-					circ_byte(&bfin_jc_write_buf, tail + 2),
-					circ_byte(&bfin_jc_write_buf, tail + 3)
-				);
-				bfin_jc_write_buf.tail += ate;
-				outbound_len -= ate;
-				if (tty)
-					tty_wakeup(tty);
-				pr_debug("  outgoing data: 0x%08x (pushing %zu)\n", emudat, ate);
-			}
-		}
-		tty_kref_put(tty);
-	}
-
-	__set_current_state(TASK_RUNNING);
-	return 0;
-}
-
-static int
-bfin_jc_open(struct tty_struct *tty, struct file *filp)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&port.lock, flags);
-	port.count++;
-	spin_unlock_irqrestore(&port.lock, flags);
-	tty_port_tty_set(&port, tty);
-	wake_up_process(bfin_jc_kthread);
-	return 0;
-}
-
-static void
-bfin_jc_close(struct tty_struct *tty, struct file *filp)
-{
-	unsigned long flags;
-	bool last;
-
-	spin_lock_irqsave(&port.lock, flags);
-	last = --port.count == 0;
-	spin_unlock_irqrestore(&port.lock, flags);
-	if (last)
-		tty_port_tty_set(&port, NULL);
-	wake_up_process(bfin_jc_kthread);
-}
-
-/* XXX: we dont handle the put_char() case where we must handle count = 1 */
-static int
-bfin_jc_circ_write(const unsigned char *buf, int count)
-{
-	int i;
-	count = min(count, circ_free(&bfin_jc_write_buf));
-	pr_debug("going to write chunk of %i bytes\n", count);
-	for (i = 0; i < count; ++i)
-		circ_byte(&bfin_jc_write_buf, bfin_jc_write_buf.head + i) = buf[i];
-	bfin_jc_write_buf.head += i;
-	return i;
-}
-
-#ifndef CONFIG_BFIN_JTAG_COMM_CONSOLE
-# define console_lock()
-# define console_unlock()
-#endif
-static int
-bfin_jc_write(struct tty_struct *tty, const unsigned char *buf, int count)
-{
-	int i;
-	console_lock();
-	i = bfin_jc_circ_write(buf, count);
-	console_unlock();
-	wake_up_process(bfin_jc_kthread);
-	return i;
-}
-
-static void
-bfin_jc_flush_chars(struct tty_struct *tty)
-{
-	wake_up_process(bfin_jc_kthread);
-}
-
-static int
-bfin_jc_write_room(struct tty_struct *tty)
-{
-	return circ_free(&bfin_jc_write_buf);
-}
-
-static int
-bfin_jc_chars_in_buffer(struct tty_struct *tty)
-{
-	return circ_cnt(&bfin_jc_write_buf);
-}
-
-static const struct tty_operations bfin_jc_ops = {
-	.open            = bfin_jc_open,
-	.close           = bfin_jc_close,
-	.write           = bfin_jc_write,
-	/*.put_char        = bfin_jc_put_char,*/
-	.flush_chars     = bfin_jc_flush_chars,
-	.write_room      = bfin_jc_write_room,
-	.chars_in_buffer = bfin_jc_chars_in_buffer,
-};
-
-static int __init bfin_jc_init(void)
-{
-	int ret;
-
-	bfin_jc_kthread = kthread_create(bfin_jc_emudat_manager, NULL, DRV_NAME);
-	if (IS_ERR(bfin_jc_kthread))
-		return PTR_ERR(bfin_jc_kthread);
-
-	ret = -ENOMEM;
-
-	bfin_jc_write_buf.head = bfin_jc_write_buf.tail = 0;
-	bfin_jc_write_buf.buf = kmalloc(CIRC_SIZE, GFP_KERNEL);
-	if (!bfin_jc_write_buf.buf)
-		goto err_buf;
-
-	bfin_jc_driver = alloc_tty_driver(1);
-	if (!bfin_jc_driver)
-		goto err_driver;
-
-	tty_port_init(&port);
-
-	bfin_jc_driver->driver_name  = DRV_NAME;
-	bfin_jc_driver->name         = DEV_NAME;
-	bfin_jc_driver->type         = TTY_DRIVER_TYPE_SERIAL;
-	bfin_jc_driver->subtype      = SERIAL_TYPE_NORMAL;
-	bfin_jc_driver->init_termios = tty_std_termios;
-	tty_set_operations(bfin_jc_driver, &bfin_jc_ops);
-	tty_port_link_device(&port, bfin_jc_driver, 0);
-
-	ret = tty_register_driver(bfin_jc_driver);
-	if (ret)
-		goto err;
-
-	pr_init(KERN_INFO DRV_NAME ": initialized\n");
-
-	return 0;
-
- err:
-	tty_port_destroy(&port);
-	put_tty_driver(bfin_jc_driver);
- err_driver:
-	kfree(bfin_jc_write_buf.buf);
- err_buf:
-	kthread_stop(bfin_jc_kthread);
-	return ret;
-}
-module_init(bfin_jc_init);
-
-static void __exit bfin_jc_exit(void)
-{
-	kthread_stop(bfin_jc_kthread);
-	kfree(bfin_jc_write_buf.buf);
-	tty_unregister_driver(bfin_jc_driver);
-	put_tty_driver(bfin_jc_driver);
-	tty_port_destroy(&port);
-}
-module_exit(bfin_jc_exit);
-
-#if defined(CONFIG_BFIN_JTAG_COMM_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
-static void
-bfin_jc_straight_buffer_write(const char *buf, unsigned count)
-{
-	unsigned ate = 0;
-	while (bfin_read_DBGSTAT() & EMUDOF)
-		continue;
-	bfin_write_emudat(count);
-	while (ate < count) {
-		while (bfin_read_DBGSTAT() & EMUDOF)
-			continue;
-		bfin_write_emudat_chars(buf[ate], buf[ate+1], buf[ate+2], buf[ate+3]);
-		ate += 4;
-	}
-}
-#endif
-
-#ifdef CONFIG_BFIN_JTAG_COMM_CONSOLE
-static void
-bfin_jc_console_write(struct console *co, const char *buf, unsigned count)
-{
-	if (bfin_jc_kthread == NULL)
-		bfin_jc_straight_buffer_write(buf, count);
-	else
-		bfin_jc_circ_write(buf, count);
-}
-
-static struct tty_driver *
-bfin_jc_console_device(struct console *co, int *index)
-{
-	*index = co->index;
-	return bfin_jc_driver;
-}
-
-static struct console bfin_jc_console = {
-	.name    = DEV_NAME,
-	.write   = bfin_jc_console_write,
-	.device  = bfin_jc_console_device,
-	.flags   = CON_ANYTIME | CON_PRINTBUFFER,
-	.index   = -1,
-};
-
-static int __init bfin_jc_console_init(void)
-{
-	register_console(&bfin_jc_console);
-	return 0;
-}
-console_initcall(bfin_jc_console_init);
-#endif
-
-#ifdef CONFIG_EARLY_PRINTK
-static void __init
-bfin_jc_early_write(struct console *co, const char *buf, unsigned int count)
-{
-	bfin_jc_straight_buffer_write(buf, count);
-}
-
-static struct console bfin_jc_early_console __initdata = {
-	.name   = "early_BFJC",
-	.write   = bfin_jc_early_write,
-	.flags   = CON_ANYTIME | CON_PRINTBUFFER,
-	.index   = -1,
-};
-
-struct console * __init
-bfin_jc_early_init(unsigned int port, unsigned int cflag)
-{
-	return &bfin_jc_early_console;
-}
-#endif
-
-MODULE_AUTHOR("Mike Frysinger <vapier@gentoo.org>");
-MODULE_DESCRIPTION("TTY over Blackfin JTAG Communication");
-MODULE_LICENSE("GPL");
diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig
index fec457edad14..3bade5ad3d71 100644
--- a/drivers/tty/hvc/Kconfig
+++ b/drivers/tty/hvc/Kconfig
@@ -88,15 +88,6 @@ config HVC_DCC
 	 driver. This console is used through a JTAG only on ARM. If you don't have
 	 a JTAG then you probably don't want this option.
 
-config HVC_BFIN_JTAG
-	bool "Blackfin JTAG console"
-	depends on BLACKFIN
-	select HVC_DRIVER
-	help
-	 This console uses the Blackfin JTAG to create a console under the
-	 the HVC driver.  If you don't have JTAG, then you probably don't
-	 want this option.
-
 config HVCS
 	tristate "IBM Hypervisor Virtual Console Server support"
 	depends on PPC_PSERIES && HVC_CONSOLE
diff --git a/drivers/tty/hvc/Makefile b/drivers/tty/hvc/Makefile
index 0b02ec7f1dfd..7da1934d34e8 100644
--- a/drivers/tty/hvc/Makefile
+++ b/drivers/tty/hvc/Makefile
@@ -3,12 +3,10 @@ obj-$(CONFIG_HVC_CONSOLE)	+= hvc_vio.o hvsi_lib.o
 obj-$(CONFIG_HVC_OPAL)		+= hvc_opal.o hvsi_lib.o
 obj-$(CONFIG_HVC_OLD_HVSI)	+= hvsi.o
 obj-$(CONFIG_HVC_RTAS)		+= hvc_rtas.o
-obj-$(CONFIG_HVC_TILE)		+= hvc_tile.o
 obj-$(CONFIG_HVC_DCC)		+= hvc_dcc.o
 obj-$(CONFIG_HVC_DRIVER)	+= hvc_console.o
 obj-$(CONFIG_HVC_IRQ)		+= hvc_irq.o
 obj-$(CONFIG_HVC_XEN)		+= hvc_xen.o
 obj-$(CONFIG_HVC_IUCV)		+= hvc_iucv.o
 obj-$(CONFIG_HVC_UDBG)		+= hvc_udbg.o
-obj-$(CONFIG_HVC_BFIN_JTAG)	+= hvc_bfin_jtag.o
 obj-$(CONFIG_HVCS)		+= hvcs.o
diff --git a/drivers/tty/hvc/hvc_bfin_jtag.c b/drivers/tty/hvc/hvc_bfin_jtag.c
deleted file mode 100644
index dd7cae4c195b..000000000000
--- a/drivers/tty/hvc/hvc_bfin_jtag.c
+++ /dev/null
@@ -1,104 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Console via Blackfin JTAG Communication
- *
- * Copyright 2008-2011 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-
-#include "hvc_console.h"
-
-/* See the Debug/Emulation chapter in the HRM */
-#define EMUDOF   0x00000001	/* EMUDAT_OUT full & valid */
-#define EMUDIF   0x00000002	/* EMUDAT_IN full & valid */
-#define EMUDOOVF 0x00000004	/* EMUDAT_OUT overflow */
-#define EMUDIOVF 0x00000008	/* EMUDAT_IN overflow */
-
-/* Helper functions to glue the register API to simple C operations */
-static inline uint32_t bfin_write_emudat(uint32_t emudat)
-{
-	__asm__ __volatile__("emudat = %0;" : : "d"(emudat));
-	return emudat;
-}
-
-static inline uint32_t bfin_read_emudat(void)
-{
-	uint32_t emudat;
-	__asm__ __volatile__("%0 = emudat;" : "=d"(emudat));
-	return emudat;
-}
-
-/* Send data to the host */
-static int hvc_bfin_put_chars(uint32_t vt, const char *buf, int count)
-{
-	static uint32_t outbound_len;
-	uint32_t emudat;
-	int ret;
-
-	if (bfin_read_DBGSTAT() & EMUDOF)
-		return 0;
-
-	if (!outbound_len) {
-		outbound_len = count;
-		bfin_write_emudat(outbound_len);
-		return 0;
-	}
-
-	ret = min(outbound_len, (uint32_t)4);
-	memcpy(&emudat, buf, ret);
-	bfin_write_emudat(emudat);
-	outbound_len -= ret;
-
-	return ret;
-}
-
-/* Receive data from the host */
-static int hvc_bfin_get_chars(uint32_t vt, char *buf, int count)
-{
-	static uint32_t inbound_len;
-	uint32_t emudat;
-	int ret;
-
-	if (!(bfin_read_DBGSTAT() & EMUDIF))
-		return 0;
-	emudat = bfin_read_emudat();
-
-	if (!inbound_len) {
-		inbound_len = emudat;
-		return 0;
-	}
-
-	ret = min(inbound_len, (uint32_t)4);
-	memcpy(buf, &emudat, ret);
-	inbound_len -= ret;
-
-	return ret;
-}
-
-/* Glue the HVC layers to the Blackfin layers */
-static const struct hv_ops hvc_bfin_get_put_ops = {
-	.get_chars = hvc_bfin_get_chars,
-	.put_chars = hvc_bfin_put_chars,
-};
-
-static int __init hvc_bfin_console_init(void)
-{
-	hvc_instantiate(0, 0, &hvc_bfin_get_put_ops);
-	return 0;
-}
-console_initcall(hvc_bfin_console_init);
-
-static int __init hvc_bfin_init(void)
-{
-	hvc_alloc(0, 0, &hvc_bfin_get_put_ops, 128);
-	return 0;
-}
-device_initcall(hvc_bfin_init);
diff --git a/drivers/tty/hvc/hvc_tile.c b/drivers/tty/hvc/hvc_tile.c
deleted file mode 100644
index b517c0661abb..000000000000
--- a/drivers/tty/hvc/hvc_tile.c
+++ /dev/null
@@ -1,196 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- * Tilera TILE Processor hypervisor console
- */
-
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/moduleparam.h>
-#include <linux/platform_device.h>
-#include <linux/types.h>
-
-#include <asm/setup.h>
-#include <arch/sim_def.h>
-
-#include <hv/hypervisor.h>
-
-#include "hvc_console.h"
-
-static int use_sim_console;
-static int __init sim_console(char *str)
-{
-	use_sim_console = 1;
-	return 0;
-}
-early_param("sim_console", sim_console);
-
-int tile_console_write(const char *buf, int count)
-{
-	if (unlikely(use_sim_console)) {
-		int i;
-		for (i = 0; i < count; ++i)
-			__insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_PUTC |
-				     (buf[i] << _SIM_CONTROL_OPERATOR_BITS));
-		__insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_PUTC |
-			     (SIM_PUTC_FLUSH_BINARY <<
-			      _SIM_CONTROL_OPERATOR_BITS));
-		return 0;
-	} else {
-		/* Translate 0 bytes written to EAGAIN for hvc_console_print. */
-		return hv_console_write((HV_VirtAddr)buf, count) ?: -EAGAIN;
-	}
-}
-
-static int hvc_tile_put_chars(uint32_t vt, const char *buf, int count)
-{
-	return tile_console_write(buf, count);
-}
-
-static int hvc_tile_get_chars(uint32_t vt, char *buf, int count)
-{
-	int i, c;
-
-	for (i = 0; i < count; ++i) {
-		c = hv_console_read_if_ready();
-		if (c < 0)
-			break;
-		buf[i] = c;
-	}
-
-	return i;
-}
-
-#ifdef __tilegx__
-/*
- * IRQ based callbacks.
- */
-static int hvc_tile_notifier_add_irq(struct hvc_struct *hp, int irq)
-{
-	int rc;
-	int cpu = raw_smp_processor_id();  /* Choose an arbitrary cpu */
-	HV_Coord coord = { .x = cpu_x(cpu), .y = cpu_y(cpu) };
-
-	rc = notifier_add_irq(hp, irq);
-	if (rc)
-		return rc;
-
-	/*
-	 * Request that the hypervisor start sending us interrupts.
-	 * If the hypervisor returns an error, we still return 0, so that
-	 * we can fall back to polling.
-	 */
-	if (hv_console_set_ipi(KERNEL_PL, irq, coord) < 0)
-		notifier_del_irq(hp, irq);
-
-	return 0;
-}
-
-static void hvc_tile_notifier_del_irq(struct hvc_struct *hp, int irq)
-{
-	HV_Coord coord = { 0, 0 };
-
-	/* Tell the hypervisor to stop sending us interrupts. */
-	hv_console_set_ipi(KERNEL_PL, -1, coord);
-
-	notifier_del_irq(hp, irq);
-}
-
-static void hvc_tile_notifier_hangup_irq(struct hvc_struct *hp, int irq)
-{
-	hvc_tile_notifier_del_irq(hp, irq);
-}
-#endif
-
-static const struct hv_ops hvc_tile_get_put_ops = {
-	.get_chars = hvc_tile_get_chars,
-	.put_chars = hvc_tile_put_chars,
-#ifdef __tilegx__
-	.notifier_add = hvc_tile_notifier_add_irq,
-	.notifier_del = hvc_tile_notifier_del_irq,
-	.notifier_hangup = hvc_tile_notifier_hangup_irq,
-#endif
-};
-
-
-#ifdef __tilegx__
-static int hvc_tile_probe(struct platform_device *pdev)
-{
-	struct hvc_struct *hp;
-	int tile_hvc_irq;
-
-	/* Create our IRQ and register it. */
-	tile_hvc_irq = irq_alloc_hwirq(-1);
-	if (!tile_hvc_irq)
-		return -ENXIO;
-
-	tile_irq_activate(tile_hvc_irq, TILE_IRQ_PERCPU);
-	hp = hvc_alloc(0, tile_hvc_irq, &hvc_tile_get_put_ops, 128);
-	if (IS_ERR(hp)) {
-		irq_free_hwirq(tile_hvc_irq);
-		return PTR_ERR(hp);
-	}
-	dev_set_drvdata(&pdev->dev, hp);
-
-	return 0;
-}
-
-static int hvc_tile_remove(struct platform_device *pdev)
-{
-	int rc;
-	struct hvc_struct *hp = dev_get_drvdata(&pdev->dev);
-
-	rc = hvc_remove(hp);
-	if (rc == 0)
-		irq_free_hwirq(hp->data);
-
-	return rc;
-}
-
-static void hvc_tile_shutdown(struct platform_device *pdev)
-{
-	struct hvc_struct *hp = dev_get_drvdata(&pdev->dev);
-
-	hvc_tile_notifier_del_irq(hp, hp->data);
-}
-
-static struct platform_device hvc_tile_pdev = {
-	.name           = "hvc-tile",
-	.id             = 0,
-};
-
-static struct platform_driver hvc_tile_driver = {
-	.probe          = hvc_tile_probe,
-	.remove         = hvc_tile_remove,
-	.shutdown	= hvc_tile_shutdown,
-	.driver         = {
-		.name   = "hvc-tile",
-	}
-};
-#endif
-
-static int __init hvc_tile_console_init(void)
-{
-	hvc_instantiate(0, 0, &hvc_tile_get_put_ops);
-	add_preferred_console("hvc", 0, NULL);
-	return 0;
-}
-console_initcall(hvc_tile_console_init);
-
-static int __init hvc_tile_init(void)
-{
-#ifndef __tilegx__
-	struct hvc_struct *hp;
-	hp = hvc_alloc(0, 0, &hvc_tile_get_put_ops, 128);
-	return PTR_ERR_OR_ZERO(hp);
-#else
-	platform_device_register(&hvc_tile_pdev);
-	return platform_driver_register(&hvc_tile_driver);
-#endif
-}
-device_initcall(hvc_tile_init);
diff --git a/drivers/tty/metag_da.c b/drivers/tty/metag_da.c
deleted file mode 100644
index 99eaed4b2dbc..000000000000
--- a/drivers/tty/metag_da.c
+++ /dev/null
@@ -1,665 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  dashtty.c - tty driver for Dash channels interface.
- *
- *  Copyright (C) 2007,2008,2012 Imagination Technologies
- */
-
-#include <linux/atomic.h>
-#include <linux/completion.h>
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/export.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/kthread.h>
-#include <linux/moduleparam.h>
-#include <linux/mutex.h>
-#include <linux/sched.h>
-#include <linux/serial.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/uaccess.h>
-
-#include <asm/da.h>
-
-/* Channel error codes */
-#define CONAOK	0
-#define CONERR	1
-#define CONBAD	2
-#define CONPRM	3
-#define CONADR	4
-#define CONCNT	5
-#define CONCBF	6
-#define CONCBE	7
-#define CONBSY	8
-
-/* Default channel for the console */
-#define CONSOLE_CHANNEL      1
-
-#define NUM_TTY_CHANNELS     6
-
-/* Auto allocate */
-#define DA_TTY_MAJOR        0
-
-/* A speedy poll rate helps the userland debug process connection response.
- * But, if you set it too high then no other userland processes get much
- * of a look in.
- */
-#define DA_TTY_POLL (HZ / 50)
-
-/*
- * A short put delay improves latency but has a high throughput overhead
- */
-#define DA_TTY_PUT_DELAY (HZ / 100)
-
-static atomic_t num_channels_need_poll = ATOMIC_INIT(0);
-
-static struct timer_list poll_timer;
-
-static struct tty_driver *channel_driver;
-
-static struct timer_list put_timer;
-static struct task_struct *dashtty_thread;
-
-/*
- * The console_poll parameter determines whether the console channel should be
- * polled for input.
- * By default the console channel isn't polled at all, in order to avoid the
- * overhead, but that means it isn't possible to have a login on /dev/console.
- */
-static bool console_poll;
-module_param(console_poll, bool, S_IRUGO);
-
-#define RX_BUF_SIZE 1024
-
-enum {
-	INCHR = 1,
-	OUTCHR,
-	RDBUF,
-	WRBUF,
-	RDSTAT
-};
-
-/**
- * struct dashtty_port - Wrapper struct for dashtty tty_port.
- * @port:		TTY port data
- * @rx_lock:		Lock for rx_buf.
- *			This protects between the poll timer and user context.
- *			It's also held during read SWITCH operations.
- * @rx_buf:		Read buffer
- * @xmit_lock:		Lock for xmit_*, and port.xmit_buf.
- *			This protects between user context and kernel thread.
- *			It's also held during write SWITCH operations.
- * @xmit_cnt:		Size of xmit buffer contents
- * @xmit_head:		Head of xmit buffer where data is written
- * @xmit_tail:		Tail of xmit buffer where data is read
- * @xmit_empty:		Completion for xmit buffer being empty
- */
-struct dashtty_port {
-	struct tty_port		 port;
-	spinlock_t		 rx_lock;
-	void			*rx_buf;
-	struct mutex		 xmit_lock;
-	unsigned int		 xmit_cnt;
-	unsigned int		 xmit_head;
-	unsigned int		 xmit_tail;
-	struct completion	 xmit_empty;
-};
-
-static struct dashtty_port dashtty_ports[NUM_TTY_CHANNELS];
-
-static atomic_t dashtty_xmit_cnt = ATOMIC_INIT(0);
-static wait_queue_head_t dashtty_waitqueue;
-
-/*
- * Low-level DA channel access routines
- */
-static int chancall(int in_bios_function, int in_channel,
-		    int in_arg2, void *in_arg3,
-		    void *in_arg4)
-{
-	register int   bios_function asm("D1Ar1") = in_bios_function;
-	register int   channel       asm("D0Ar2") = in_channel;
-	register int   arg2          asm("D1Ar3") = in_arg2;
-	register void *arg3          asm("D0Ar4") = in_arg3;
-	register void *arg4          asm("D1Ar5") = in_arg4;
-	register int   bios_call     asm("D0Ar6") = 3;
-	register int   result        asm("D0Re0");
-
-	asm volatile (
-		"MSETL	[A0StP++], %6,%4,%2\n\t"
-		"ADD	A0StP, A0StP, #8\n\t"
-		"SWITCH	#0x0C30208\n\t"
-		"GETD	%0, [A0StP+#-8]\n\t"
-		"SUB	A0StP, A0StP, #(4*6)+8\n\t"
-		: "=d" (result)   /* outs */
-		: "d" (bios_function),
-		  "d" (channel),
-		  "d" (arg2),
-		  "d" (arg3),
-		  "d" (arg4),
-		  "d" (bios_call) /* ins */
-		: "memory");
-
-	return result;
-}
-
-/*
- * Attempts to fetch count bytes from channel and returns actual count.
- */
-static int fetch_data(unsigned int channel)
-{
-	struct dashtty_port *dport = &dashtty_ports[channel];
-	int received = 0;
-
-	spin_lock_bh(&dport->rx_lock);
-	/* check the port isn't being shut down */
-	if (!dport->rx_buf)
-		goto unlock;
-	if (chancall(RDBUF, channel, RX_BUF_SIZE,
-		     (void *)dport->rx_buf, &received) == CONAOK) {
-		if (received) {
-			int space;
-			unsigned char *cbuf;
-
-			space = tty_prepare_flip_string(&dport->port, &cbuf,
-							received);
-
-			if (space <= 0)
-				goto unlock;
-
-			memcpy(cbuf, dport->rx_buf, space);
-			tty_flip_buffer_push(&dport->port);