[PATCH 4/5] drivers: watchdog: remove KVX watchdog

[clement.leger@linux.dev]

From: Clément Léger <clement.leger@linux.dev>

Remove the kvx watchdog driver.

Signed-off-by: Clément Léger <clement.leger@linux.dev>
---
 drivers/watchdog/Kconfig   |  17 ------
 drivers/watchdog/Makefile  |   1 -
 drivers/watchdog/kvx_wdt.c | 109 -------------------------------------
 3 files changed, 127 deletions(-)
 delete mode 100644 drivers/watchdog/kvx_wdt.c

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 14fdb7cf68..068d3c93dd 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -83,23 +83,6 @@ config WATCHDOG_ORION
 	help
 	  Add support for watchdog on the Marvall Armada XP
 
-config WATCHDOG_KVX
-	bool "KVX Core watchdog"
-	depends on KVX
-	help
-	  Add support for the KVX core watchdog.
-
-config WATCHDOG_KVX_EARLY_INIT
-	bool "KVX Core watchdog early init"
-	depends on WATCHDOG_KVX
-	help
-	  Activate the watchdog with early initcall
-
-config WATCHDOG_KVX_EARLY_TIMEOUT
-	int "KVX Core watchdog early timeout in cycles"
-	depends on WATCHDOG_KVX_EARLY_INIT
-	default 100000000
-
 config WATCHDOG_BCM2835
 	bool "Watchdog for BCM283x SoCs"
 	depends on ARCH_BCM283X || COMPILE_TEST
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index c49d090f8d..4b7fd74dfa 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -11,7 +11,6 @@ obj-$(CONFIG_WATCHDOG_JZ4740) += jz4740.o
 obj-$(CONFIG_WATCHDOG_IMX_RESET_SOURCE) += imxwd.o
 obj-$(CONFIG_WATCHDOG_IMX) += imxwd.o
 obj-$(CONFIG_WATCHDOG_IMXULP) += imxulp-wdt.o
-obj-$(CONFIG_WATCHDOG_KVX) += kvx_wdt.o
 obj-$(CONFIG_WATCHDOG_ORION) += orion_wdt.o
 obj-$(CONFIG_ARCH_BCM283X) += bcm2835_wdt.o
 obj-$(CONFIG_RAVE_SP_WATCHDOG) += rave-sp-wdt.o
diff --git a/drivers/watchdog/kvx_wdt.c b/drivers/watchdog/kvx_wdt.c
deleted file mode 100644
index 3e66aa38ba..0000000000
--- a/drivers/watchdog/kvx_wdt.c
+++ /dev/null
@@ -1,109 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2018 Kalray Inc.
- */
-
-#include <common.h>
-#include <init.h>
-#include <io.h>
-#include <of.h>
-#include <watchdog.h>
-
-#include <linux/clk.h>
-#include <linux/err.h>
-
-#include <asm/sfr.h>
-
-struct kvx_wdt {
-	uint64_t clk_rate;
-	struct watchdog wdd;
-};
-
-static void kvx_watchdog_disable(void)
-{
-	kvx_sfr_set_field(TCR, WUI, 0);
-	kvx_sfr_set_field(TCR, WCE, 0);
-}
-
-static int kvx_wdt_set_timeout(struct watchdog *wdd, unsigned int timeout)
-{
-	struct kvx_wdt *wdt = container_of(wdd, struct kvx_wdt, wdd);
-	uint64_t cycle_timeout = wdt->clk_rate * timeout;
-
-	/* Disable watchdog */
-	if (timeout == 0) {
-		kvx_watchdog_disable();
-		return 0;
-	}
-
-	kvx_sfr_set(WDV, cycle_timeout);
-	kvx_sfr_set(WDR, 0);
-
-	/* Start watchdog counting */
-	kvx_sfr_set_field(TCR, WUI, 1);
-	kvx_sfr_set_field(TCR, WCE, 1);
-
-	return 0;
-}
-
-static int count;
-
-static int kvx_wdt_drv_probe(struct device *dev)
-{
-	struct watchdog *wdd;
-	struct clk *clk;
-	struct kvx_wdt *kvx_wdt;
-
-	if (count != 0) {
-		dev_warn(dev, "Tried to register core watchdog twice\n");
-		return -EINVAL;
-	}
-	count++;
-
-	kvx_wdt = xzalloc(sizeof(*kvx_wdt));
-	clk = clk_get(dev, NULL);
-	if (IS_ERR(clk))
-		return PTR_ERR(clk);
-
-	kvx_wdt->clk_rate = clk_get_rate(clk);
-	clk_put(clk);
-
-	wdd = &kvx_wdt->wdd;
-	wdd->name = "kvx_wdt";
-	wdd->hwdev = dev;
-	wdd->set_timeout = kvx_wdt_set_timeout;
-
-	/* Be sure that interrupt are disabled */
-	kvx_sfr_set_field(TCR, WIE, 0);
-
-	return watchdog_register(wdd);
-}
-
-static struct of_device_id kvx_wdt_of_match[] = {
-	{ .compatible = "kalray,kvx-core-watchdog", },
-	{ /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, kvx_wdt_of_match);
-
-static struct driver kvx_wdt_driver = {
-	.name		= "kvx-wdt",
-	.probe		= kvx_wdt_drv_probe,
-	.of_compatible	= DRV_OF_COMPAT(kvx_wdt_of_match),
-};
-device_platform_driver(kvx_wdt_driver);
-
-#ifdef CONFIG_WATCHDOG_KVX_EARLY_INIT
-static int kvx_wdt_early_init(void)
-{
-	/* Set Start watchdog counting */
-	kvx_sfr_set(WDV, CONFIG_WATCHDOG_KVX_EARLY_TIMEOUT);
-	kvx_sfr_set(WDR, 0);
-
-	/* Start watchdog counting */
-	kvx_sfr_set_field(TCR, WUI, 1);
-	kvx_sfr_set_field(TCR, WCE, 1);
-
-	return 0;
-}
-core_initcall(kvx_wdt_early_init);
-#endif
-- 
2.55.0