tty: hvc: remove tile driver

The Tile architecture is obsolete and getting removed from the kernel,
this removes the corresponding console driver as well.
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

drivers/tty/hvc/Makefile

@@ -3,7 +3,6 @@ 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

drivers/tty/hvc/hvc_tile.c

-// 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);