[PATCH (v2) 11/11] watchdog: bcm63xx_wdt: Use brcm,bcm6345-wdt device tree binding

[Simon Arlott <simon@fire.lp0.eu>]

Add of_match_table for "brcm,bcm6345-wdt".

Use a NULL clock name when not on mach-bcm63xx so that the device tree
clock name does not have to be "periph".

Allow the watchdog to be selected on BMIPS_GENERIC and select the BCM6345
timer interrupt handler.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
---
Patch 7 split into two patches.

On 25/11/15 02:44, Guenter Roeck wrote:
>> +	hw = devm_kzalloc(&pdev->dev, sizeof(*hw), GFP_KERNEL);
>> +	wdd = devm_kzalloc(&pdev->dev, sizeof(*wdd), GFP_KERNEL);
> 
> It would be better to allocate wdd as part of struct bcm63xx_wdt_hw.

This altered the context of this patch (was 10/10 now 11/11) because
platform_get_drvdata() is now "hw" instead of "wdd".

 drivers/watchdog/Kconfig       |  3 ++-
 drivers/watchdog/bcm63xx_wdt.c | 14 +++++++++++++-
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 6815b74..0c50add 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1272,8 +1272,9 @@ config OCTEON_WDT
 
 config BCM63XX_WDT
 	tristate "Broadcom BCM63xx hardware watchdog"
-	depends on BCM63XX
+	depends on BCM63XX || BMIPS_GENERIC
 	select WATCHDOG_CORE
+	select BCM6345_L2_TIMER_IRQ if BMIPS_GENERIC
 	help
 	  Watchdog driver for the built in watchdog hardware in Broadcom
 	  BCM63xx SoC.
diff --git a/drivers/watchdog/bcm63xx_wdt.c b/drivers/watchdog/bcm63xx_wdt.c
index fa6c28b..4db4145 100644
--- a/drivers/watchdog/bcm63xx_wdt.c
+++ b/drivers/watchdog/bcm63xx_wdt.c
@@ -22,6 +22,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
 #include <linux/watchdog.h>
@@ -31,7 +32,11 @@
 
 #define PFX KBUILD_MODNAME
 
-#define WDT_CLK_NAME		"periph"
+#ifdef CONFIG_BCM63XX
+# define WDT_CLK_NAME		"periph"
+#else
+# define WDT_CLK_NAME		NULL
+#endif
 
 struct bcm63xx_wdt_hw {
 	struct watchdog_device wdd;
@@ -286,12 +291,19 @@ static void bcm63xx_wdt_shutdown(struct platform_device *pdev)
 	bcm63xx_wdt_stop(&hw->wdd);
 }
 
+static const struct of_device_id bcm63xx_wdt_dt_ids[] = {
+	{ .compatible = "brcm,bcm6345-wdt" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, bcm63xx_wdt_dt_ids);
+
 static struct platform_driver bcm63xx_wdt_driver = {
 	.probe	= bcm63xx_wdt_probe,
 	.remove = bcm63xx_wdt_remove,
 	.shutdown = bcm63xx_wdt_shutdown,
 	.driver = {
 		.name = "bcm63xx-wdt",
+		.of_match_table = bcm63xx_wdt_dt_ids,
 	}
 };
 
-- 
2.1.4

-- 
Simon Arlott