platform/x86: intel_scu_wdt: Move driver from arch/x86

The ACPI-enabled Intel MID platforms neither have WDAT table nor proper IDs
to instantiate watchdog device. In order to keep them working move the board
code from arch/x86 to drivers/platform/x86.

Note, the complete SFI support is going to be removed, that's why PDx86
has been chosen as a new home for it. This is the only device which needs
additional code so far.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

2 files changed, 0 insertions, 83 deletions

diff --git a/arch/x86/platform/intel-mid/device_libs/Makefile b/arch/x86/platform/intel-mid/device_libs/Makefile
index 480fed21cc7d..918edac9ab9a 100644
--- a/arch/x86/platform/intel-mid/device_libs/Makefile
+++ b/arch/x86/platform/intel-mid/device_libs/Makefile
@@ -30,4 +30,3 @@ obj-$(subst m,y,$(CONFIG_GPIO_PCA953X)) += platform_tca6416.o
 obj-$(subst m,y,$(CONFIG_KEYBOARD_GPIO)) += platform_gpio_keys.o
 obj-$(subst m,y,$(CONFIG_INTEL_MID_POWER_BUTTON)) += platform_mrfld_power_btn.o
 obj-$(subst m,y,$(CONFIG_RTC_DRV_CMOS)) += platform_mrfld_rtc.o
-obj-$(subst m,y,$(CONFIG_INTEL_MID_WATCHDOG)) += platform_mrfld_wdt.o
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_mrfld_wdt.c b/arch/x86/platform/intel-mid/device_libs/platform_mrfld_wdt.c
deleted file mode 100644
index 227218a8f98e..000000000000
--- a/arch/x86/platform/intel-mid/device_libs/platform_mrfld_wdt.c
+++ /dev/null
@@ -1,82 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Intel Merrifield watchdog platform device library file
- *
- * (C) Copyright 2014 Intel Corporation
- * Author: David Cohen <david.a.cohen@linux.intel.com>
- */
-
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/platform_data/intel-mid_wdt.h>
-
-#include <asm/intel-mid.h>
-#include <asm/intel_scu_ipc.h>
-#include <asm/io_apic.h>
-#include <asm/hw_irq.h>
-
-#define TANGIER_EXT_TIMER0_MSI 12
-
-static struct platform_device wdt_dev = {
-	.name = "intel_mid_wdt",
-	.id = -1,
-};
-
-static int tangier_probe(struct platform_device *pdev)
-{
-	struct irq_alloc_info info;
-	struct intel_mid_wdt_pdata *pdata = pdev->dev.platform_data;
-	int gsi = TANGIER_EXT_TIMER0_MSI;
-	int irq;
-
-	if (!pdata)
-		return -EINVAL;
-
-	/* IOAPIC builds identity mapping between GSI and IRQ on MID */
-	ioapic_set_alloc_attr(&info, cpu_to_node(0), 1, 0);
-	irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info);
-	if (irq < 0) {
-		dev_warn(&pdev->dev, "cannot find interrupt %d in ioapic\n", gsi);
-		return irq;
-	}
-
-	pdata->irq = irq;
-	return 0;
-}
-
-static struct intel_mid_wdt_pdata tangier_pdata = {
-	.probe = tangier_probe,
-};
-
-static int wdt_scu_status_change(struct notifier_block *nb,
-				 unsigned long code, void *data)
-{
-	if (code == SCU_DOWN) {
-		platform_device_unregister(&wdt_dev);
-		return 0;
-	}
-
-	return platform_device_register(&wdt_dev);
-}
-
-static struct notifier_block wdt_scu_notifier = {
-	.notifier_call	= wdt_scu_status_change,
-};
-
-static int __init register_mid_wdt(void)
-{
-	if (intel_mid_identify_cpu() != INTEL_MID_CPU_CHIP_TANGIER)
-		return -ENODEV;
-
-	wdt_dev.dev.platform_data = &tangier_pdata;
-
-	/*
-	 * We need to be sure that the SCU IPC is ready before watchdog device
-	 * can be registered:
-	 */
-	intel_scu_notifier_add(&wdt_scu_notifier);
-
-	return 0;
-}
-arch_initcall(register_mid_wdt);