Commit 766a2aad authored by Linus Walleij's avatar Linus Walleij Committed by Wim Van Sebroeck
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watchdog: gemini/ftwdt010: rename driver and symbols 



This renames all the driver files and symbols for the Gemini
watchdog to FTWDT010 as it has been revealed that this IP block
is a generic watchdog timer from Faraday Technology used in
several SoC designs.

Select this driver by default for the Gemini, it is a sensible
driver to always have enabled.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent ef3c9cc1

drivers/watchdog/Kconfig

+8 −6
Original line number Diff line number Diff line
@@ -321,16 +321,18 @@ config 977_WATCHDOG 


	  Not sure? It's safe to say N.



config GEMINI_WATCHDOG

	tristate "Gemini watchdog"

	depends on ARCH_GEMINI

config FTWDT010_WATCHDOG

	tristate "Faraday Technology FTWDT010 watchdog"

	depends on ARM || COMPILE_TEST

	select WATCHDOG_CORE

	default ARCH_GEMINI

	help

	  Say Y here if to include support for the watchdog timer

	  embedded in the Cortina Systems Gemini family of devices.

	  Say Y here if to include support for the Faraday Technology

	  FTWDT010 watchdog timer embedded in the Cortina Systems Gemini

	  family of devices.



	  To compile this driver as a module, choose M here: the

	  module will be called gemini_wdt.

	  module will be called ftwdt010_wdt.



config IXP4XX_WATCHDOG

	tristate "IXP4xx Watchdog"

drivers/watchdog/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -46,7 +46,7 @@ obj-$(CONFIG_OMAP_WATCHDOG) += omap_wdt.o 
obj-$(CONFIG_TWL4030_WATCHDOG) += twl4030_wdt.o

obj-$(CONFIG_21285_WATCHDOG) += wdt285.o

obj-$(CONFIG_977_WATCHDOG) += wdt977.o

obj-$(CONFIG_GEMINI_WATCHDOG) += gemini_wdt.o

obj-$(CONFIG_FTWDT010_WATCHDOG) += ftwdt010_wdt.o

obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o

obj-$(CONFIG_KS8695_WATCHDOG) += ks8695_wdt.o

obj-$(CONFIG_S3C2410_WATCHDOG) += s3c2410_wdt.o

drivers/watchdog/gemini_wdt.c→drivers/watchdog/ftwdt010_wdt.c

+59 −58
Original line number Diff line number Diff line 
/*

 * Watchdog driver for Cortina Systems Gemini SoC

 * Watchdog driver for Faraday Technology FTWDT010

 *

 * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>

 *
@@ -22,10 +22,10 @@ 
#include <linux/slab.h>

#include <linux/watchdog.h>



#define GEMINI_WDCOUNTER	0x0

#define GEMINI_WDLOAD		0x4

#define GEMINI_WDRESTART	0x8

#define GEMINI_WDCR		0xC

#define FTWDT010_WDCOUNTER	0x0

#define FTWDT010_WDLOAD		0x4

#define FTWDT010_WDRESTART	0x8

#define FTWDT010_WDCR		0xC



#define WDRESTART_MAGIC		0x5AB9
@@ -35,79 +35,79 @@ 


#define WDT_CLOCK		5000000		/* 5 MHz */



struct gemini_wdt {

struct ftwdt010_wdt {

	struct watchdog_device	wdd;

	struct device		*dev;

	void __iomem		*base;

};



static inline

struct gemini_wdt *to_gemini_wdt(struct watchdog_device *wdd)

struct ftwdt010_wdt *to_ftwdt010_wdt(struct watchdog_device *wdd)

{

	return container_of(wdd, struct gemini_wdt, wdd);

	return container_of(wdd, struct ftwdt010_wdt, wdd);

}



static int gemini_wdt_start(struct watchdog_device *wdd)

static int ftwdt010_wdt_start(struct watchdog_device *wdd)

{

	struct gemini_wdt *gwdt = to_gemini_wdt(wdd);

	struct ftwdt010_wdt *gwdt = to_ftwdt010_wdt(wdd);



	writel(wdd->timeout * WDT_CLOCK, gwdt->base + GEMINI_WDLOAD);

	writel(WDRESTART_MAGIC, gwdt->base + GEMINI_WDRESTART);

	writel(wdd->timeout * WDT_CLOCK, gwdt->base + FTWDT010_WDLOAD);

	writel(WDRESTART_MAGIC, gwdt->base + FTWDT010_WDRESTART);

	/* set clock before enabling */

	writel(WDCR_CLOCK_5MHZ | WDCR_SYS_RST,

			gwdt->base + GEMINI_WDCR);

			gwdt->base + FTWDT010_WDCR);

	writel(WDCR_CLOCK_5MHZ | WDCR_SYS_RST | WDCR_ENABLE,

			gwdt->base + GEMINI_WDCR);

			gwdt->base + FTWDT010_WDCR);



	return 0;

}



static int gemini_wdt_stop(struct watchdog_device *wdd)

static int ftwdt010_wdt_stop(struct watchdog_device *wdd)

{

	struct gemini_wdt *gwdt = to_gemini_wdt(wdd);

	struct ftwdt010_wdt *gwdt = to_ftwdt010_wdt(wdd);



	writel(0, gwdt->base + GEMINI_WDCR);

	writel(0, gwdt->base + FTWDT010_WDCR);



	return 0;

}



static int gemini_wdt_ping(struct watchdog_device *wdd)

static int ftwdt010_wdt_ping(struct watchdog_device *wdd)

{

	struct gemini_wdt *gwdt = to_gemini_wdt(wdd);

	struct ftwdt010_wdt *gwdt = to_ftwdt010_wdt(wdd);



	writel(WDRESTART_MAGIC, gwdt->base + GEMINI_WDRESTART);

	writel(WDRESTART_MAGIC, gwdt->base + FTWDT010_WDRESTART);



	return 0;

}



static int gemini_wdt_set_timeout(struct watchdog_device *wdd,

static int ftwdt010_wdt_set_timeout(struct watchdog_device *wdd,

				  unsigned int timeout)

{

	wdd->timeout = timeout;

	if (watchdog_active(wdd))

		gemini_wdt_start(wdd);

		ftwdt010_wdt_start(wdd);



	return 0;

}



static irqreturn_t gemini_wdt_interrupt(int irq, void *data)

static irqreturn_t ftwdt010_wdt_interrupt(int irq, void *data)

{

	struct gemini_wdt *gwdt = data;

	struct ftwdt010_wdt *gwdt = data;



	watchdog_notify_pretimeout(&gwdt->wdd);



	return IRQ_HANDLED;

}



static const struct watchdog_ops gemini_wdt_ops = {

	.start		= gemini_wdt_start,

	.stop		= gemini_wdt_stop,

	.ping		= gemini_wdt_ping,

	.set_timeout	= gemini_wdt_set_timeout,

static const struct watchdog_ops ftwdt010_wdt_ops = {

	.start		= ftwdt010_wdt_start,

	.stop		= ftwdt010_wdt_stop,

	.ping		= ftwdt010_wdt_ping,

	.set_timeout	= ftwdt010_wdt_set_timeout,

	.owner		= THIS_MODULE,

};



static const struct watchdog_info gemini_wdt_info = {

static const struct watchdog_info ftwdt010_wdt_info = {

	.options	= WDIOF_KEEPALIVEPING

			| WDIOF_MAGICCLOSE

			| WDIOF_SETTIMEOUT,
@@ -115,11 +115,11 @@ static const struct watchdog_info gemini_wdt_info = { 
};





static int gemini_wdt_probe(struct platform_device *pdev)

static int ftwdt010_wdt_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	struct resource *res;

	struct gemini_wdt *gwdt;

	struct ftwdt010_wdt *gwdt;

	unsigned int reg;

	int irq;

	int ret;
@@ -138,8 +138,8 @@ static int gemini_wdt_probe(struct platform_device *pdev) 
		return -EINVAL;



	gwdt->dev = dev;

	gwdt->wdd.info = &gemini_wdt_info;

	gwdt->wdd.ops = &gemini_wdt_ops;

	gwdt->wdd.info = &ftwdt010_wdt_info;

	gwdt->wdd.ops = &ftwdt010_wdt_ops;

	gwdt->wdd.min_timeout = 1;

	gwdt->wdd.max_timeout = 0xFFFFFFFF / WDT_CLOCK;

	gwdt->wdd.parent = dev;
@@ -151,14 +151,14 @@ static int gemini_wdt_probe(struct platform_device *pdev) 
	gwdt->wdd.timeout = 13U;

	watchdog_init_timeout(&gwdt->wdd, 0, dev);



	reg = readw(gwdt->base + GEMINI_WDCR);

	reg = readw(gwdt->base + FTWDT010_WDCR);

	if (reg & WDCR_ENABLE) {

		/* Watchdog was enabled by the bootloader, disable it. */

		reg &= ~WDCR_ENABLE;

		writel(reg, gwdt->base + GEMINI_WDCR);

		writel(reg, gwdt->base + FTWDT010_WDCR);

	}



	ret = devm_request_irq(dev, irq, gemini_wdt_interrupt, 0,

	ret = devm_request_irq(dev, irq, ftwdt010_wdt_interrupt, 0,

			       "watchdog bark", gwdt);

	if (ret)

		return ret;
@@ -171,59 +171,60 @@ static int gemini_wdt_probe(struct platform_device *pdev) 


	/* Set up platform driver data */

	platform_set_drvdata(pdev, gwdt);

	dev_info(dev, "Gemini watchdog driver enabled\n");

	dev_info(dev, "FTWDT010 watchdog driver enabled\n");



	return 0;

}



static int __maybe_unused gemini_wdt_suspend(struct device *dev)

static int __maybe_unused ftwdt010_wdt_suspend(struct device *dev)

{

	struct gemini_wdt *gwdt = dev_get_drvdata(dev);

	struct ftwdt010_wdt *gwdt = dev_get_drvdata(dev);

	unsigned int reg;



	reg = readw(gwdt->base + GEMINI_WDCR);

	reg = readw(gwdt->base + FTWDT010_WDCR);

	reg &= ~WDCR_ENABLE;

	writel(reg, gwdt->base + GEMINI_WDCR);

	writel(reg, gwdt->base + FTWDT010_WDCR);



	return 0;

}



static int __maybe_unused gemini_wdt_resume(struct device *dev)

static int __maybe_unused ftwdt010_wdt_resume(struct device *dev)

{

	struct gemini_wdt *gwdt = dev_get_drvdata(dev);

	struct ftwdt010_wdt *gwdt = dev_get_drvdata(dev);

	unsigned int reg;



	if (watchdog_active(&gwdt->wdd)) {

		reg = readw(gwdt->base + GEMINI_WDCR);

		reg = readw(gwdt->base + FTWDT010_WDCR);

		reg |= WDCR_ENABLE;

		writel(reg, gwdt->base + GEMINI_WDCR);

		writel(reg, gwdt->base + FTWDT010_WDCR);

	}



	return 0;

}



static const struct dev_pm_ops gemini_wdt_dev_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(gemini_wdt_suspend,

				gemini_wdt_resume)

static const struct dev_pm_ops ftwdt010_wdt_dev_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(ftwdt010_wdt_suspend,

				ftwdt010_wdt_resume)

};



#ifdef CONFIG_OF

static const struct of_device_id gemini_wdt_match[] = {

static const struct of_device_id ftwdt010_wdt_match[] = {

	{ .compatible = "faraday,ftwdt010" },

	{ .compatible = "cortina,gemini-watchdog" },

	{},

};

MODULE_DEVICE_TABLE(of, gemini_wdt_match);

MODULE_DEVICE_TABLE(of, ftwdt010_wdt_match);

#endif



static struct platform_driver gemini_wdt_driver = {

	.probe		= gemini_wdt_probe,

static struct platform_driver ftwdt010_wdt_driver = {

	.probe		= ftwdt010_wdt_probe,

	.driver		= {

		.name	= "gemini-wdt",

		.of_match_table = of_match_ptr(gemini_wdt_match),

		.pm = &gemini_wdt_dev_pm_ops,

		.name	= "ftwdt010-wdt",

		.of_match_table = of_match_ptr(ftwdt010_wdt_match),

		.pm = &ftwdt010_wdt_dev_pm_ops,

	},

};

module_platform_driver(gemini_wdt_driver);

module_platform_driver(ftwdt010_wdt_driver);

MODULE_AUTHOR("Linus Walleij");

MODULE_DESCRIPTION("Watchdog driver for Gemini");

MODULE_DESCRIPTION("Watchdog driver for Faraday Technology FTWDT010");

MODULE_LICENSE("GPL");

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