cns3xxx: drop target

[openwrt/openwrt.git] / target / linux / cns3xxx / patches-4.19 / 020-watchdog_support.patch

diff --git a/target/linux/cns3xxx/patches-4.19/020-watchdog_support.patch b/target/linux/cns3xxx/patches-4.19/020-watchdog_support.patch
deleted file mode 100644 (file)
index e626ff2..0000000
--- a/target/linux/cns3xxx/patches-4.19/020-watchdog_support.patch
+++ /dev/null
@@ -1,184 +0,0 @@
-Add a watchdog driver for ARM MPcore processors.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
---- a/drivers/watchdog/Kconfig
-+++ b/drivers/watchdog/Kconfig
-@@ -375,6 +375,13 @@ config KS8695_WATCHDOG
-         Watchdog timer embedded into KS8695 processor. This will reboot your
-         system when the timeout is reached.
- 
-+config MPCORE_WATCHDOG
-+      tristate "MPcore watchdog"
-+      depends on HAVE_ARM_TWD
-+      select WATCHDOG_CORE
-+      help
-+        Watchdog timer embedded into the MPcore system
-+
- config HAVE_S3C2410_WATCHDOG
-       bool
-       help
---- a/drivers/watchdog/Makefile
-+++ b/drivers/watchdog/Makefile
-@@ -49,6 +49,7 @@ obj-$(CONFIG_977_WATCHDOG) += wdt977.o
- obj-$(CONFIG_FTWDT010_WATCHDOG) += ftwdt010_wdt.o
- obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o
- obj-$(CONFIG_KS8695_WATCHDOG) += ks8695_wdt.o
-+obj-$(CONFIG_MPCORE_WATCHDOG) += mpcore_wdt.o
- obj-$(CONFIG_S3C2410_WATCHDOG) += s3c2410_wdt.o
- obj-$(CONFIG_SA1100_WATCHDOG) += sa1100_wdt.o
- obj-$(CONFIG_SAMA5D4_WATCHDOG) += sama5d4_wdt.o
---- /dev/null
-+++ b/drivers/watchdog/mpcore_wdt.c
-@@ -0,0 +1,118 @@
-+/*
-+ * Watchdog driver for ARM MPcore
-+ *
-+ * Copyright (C) 2017 Felix Fietkau <nbd@nbd.name>
-+ */
-+
-+#include <linux/export.h>
-+#include <linux/module.h>
-+#include <linux/kernel.h>
-+#include <linux/watchdog.h>
-+#include <linux/platform_device.h>
-+#include <linux/io.h>
-+#include <asm/smp_twd.h>
-+
-+static void __iomem *wdt_base;
-+static int wdt_timeout = 60;
-+
-+static int mpcore_wdt_keepalive(struct watchdog_device *wdd)
-+{
-+      static int perturb;
-+      u32 count;
-+
-+      count = (twd_timer_get_rate() / 256) * wdt_timeout;
-+
-+      /* Reload register needs a different value on each refresh */
-+      count += perturb;
-+      perturb = !perturb;
-+
-+      iowrite32(count, wdt_base + TWD_WDOG_LOAD);
-+
-+      return 0;
-+}
-+
-+static int mpcore_wdt_start(struct watchdog_device *wdd)
-+{
-+      mpcore_wdt_keepalive(wdd);
-+
-+      /* prescale = 256, mode = 1, enable = 1 */
-+      iowrite32(0x0000FF09, wdt_base + TWD_WDOG_CONTROL);
-+
-+      return 0;
-+}
-+
-+static int mpcore_wdt_stop(struct watchdog_device *wdd)
-+{
-+      iowrite32(0x12345678, wdt_base + TWD_WDOG_DISABLE);
-+      iowrite32(0x87654321, wdt_base + TWD_WDOG_DISABLE);
-+      iowrite32(0x0, wdt_base + TWD_WDOG_CONTROL);
-+
-+      return 0;
-+}
-+
-+static int mpcore_wdt_set_timeout(struct watchdog_device *wdd,
-+                               unsigned int timeout)
-+{
-+      mpcore_wdt_stop(wdd);
-+      wdt_timeout = timeout;
-+      mpcore_wdt_start(wdd);
-+
-+      return 0;
-+}
-+
-+static const struct watchdog_info mpcore_wdt_info = {
-+      .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
-+      .identity = "MPcore Watchdog",
-+};
-+
-+static const struct watchdog_ops mpcore_wdt_ops = {
-+      .owner = THIS_MODULE,
-+      .start = mpcore_wdt_start,
-+      .stop  = mpcore_wdt_stop,
-+      .ping  = mpcore_wdt_keepalive,
-+      .set_timeout = mpcore_wdt_set_timeout,
-+};
-+
-+static struct watchdog_device mpcore_wdt = {
-+      .info = &mpcore_wdt_info,
-+      .ops = &mpcore_wdt_ops,
-+      .min_timeout = 1,
-+      .max_timeout = 65535,
-+};
-+
-+static int mpcore_wdt_probe(struct platform_device *pdev)
-+{
-+      struct resource *res;
-+      unsigned long rate = twd_timer_get_rate();
-+
-+      pr_info("MPCore WD init. clockrate: %lu prescaler: %u countrate: %lu timeout: %us\n", rate, 256, rate / 256, wdt_timeout);
-+
-+      res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+      if (!res)
-+              return -ENODEV;
-+
-+      wdt_base = devm_ioremap_resource(&pdev->dev, res);
-+      if (IS_ERR(wdt_base))
-+              return PTR_ERR(wdt_base);
-+
-+      watchdog_register_device(&mpcore_wdt);
-+      return 0;
-+}
-+
-+static int mpcore_wdt_remove(struct platform_device *dev)
-+{
-+      watchdog_unregister_device(&mpcore_wdt);
-+      return 0;
-+}
-+
-+static struct platform_driver mpcore_wdt_driver = {
-+      .probe          = mpcore_wdt_probe,
-+      .remove         = mpcore_wdt_remove,
-+      .driver         = {
-+              .name   = "mpcore_wdt",
-+      },
-+};
-+
-+module_platform_driver(mpcore_wdt_driver);
-+MODULE_AUTHOR("Felix Fietkau <nbd@nbd.name>");
-+MODULE_LICENSE("GPL");
---- a/arch/arm/include/asm/smp_twd.h
-+++ b/arch/arm/include/asm/smp_twd.h
-@@ -34,5 +34,6 @@ struct twd_local_timer name __initdata =
- };
- 
- int twd_local_timer_register(struct twd_local_timer *);
-+unsigned long twd_timer_get_rate(void);
- 
- #endif
---- a/arch/arm/kernel/smp_twd.c
-+++ b/arch/arm/kernel/smp_twd.c
-@@ -15,6 +15,7 @@
- #include <linux/delay.h>
- #include <linux/device.h>
- #include <linux/err.h>
-+#include <linux/export.h>
- #include <linux/smp.h>
- #include <linux/jiffies.h>
- #include <linux/clockchips.h>
-@@ -380,6 +381,14 @@ int __init twd_local_timer_register(stru
-       return twd_local_timer_common_register(NULL);
- }
- 
-+/* Needed by mpcore_wdt */
-+unsigned long twd_timer_get_rate(void)
-+{
-+      return twd_timer_rate;
-+}
-+EXPORT_SYMBOL_GPL(twd_timer_get_rate);
-+
-+
- #ifdef CONFIG_OF
- static int __init twd_local_timer_of_register(struct device_node *np)
- {