* [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
@ 2014-09-28 17:05 ` Markus Pargmann
0 siblings, 0 replies; 10+ messages in thread
From: Markus Pargmann @ 2014-09-28 17:05 UTC (permalink / raw)
To: Wim Van Sebroeck
Cc: Support Opensource, Philipp Zabel, Guenter Roeck, linux-watchdog,
linux-arm-kernel, kernel
From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
This driver supports the watchdog device inside the DA9063 PMIC.
Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
Notes:
Changes in v7:
- Remove unnecessary range checks
- Realign line breaks
- Cleanup use of unsigned int for selector and timeouts
Changes in v6:
- Fix compile error
Changes in v5:
- Kconfig: Add note about the module name.
- Change selector variables to int
- Style fixes
- use unsigned int to remove gcc verbose warning
- Integrate _kick() and _disable() into the calling functions
Changes in v4:
- Fixed indentation
- Fixed lock without unlock
- Check for parent device and device driver data in probe(). If not present,
this is an invalid prober initialization, return -EINVAL.
Changes in v3:
- Cleanup error handling for timeout selection and setting
- Fix race condition due to late wdt drvdata setup
- Remove static struct watchdog_device. It is not initialized in the probe
function
- Use WATCHDOG_NOWAYOUT_INIT_STATUS for the status
- Remove 0 shift using DA9063_TWDSCALE_SHIFT
drivers/watchdog/Kconfig | 9 ++
drivers/watchdog/Makefile | 1 +
drivers/watchdog/da9063_wdt.c | 191 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 201 insertions(+)
create mode 100644 drivers/watchdog/da9063_wdt.c
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index f57312fced80..669de63a7a48 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -87,6 +87,15 @@ config DA9055_WATCHDOG
This driver can also be built as a module. If so, the module
will be called da9055_wdt.
+config DA9063_WATCHDOG
+ tristate "Dialog DA9063 Watchdog"
+ depends on MFD_DA9063
+ select WATCHDOG_CORE
+ help
+ Support for the watchdog in the DA9063 PMIC.
+
+ This driver can be built as a module. The module name is da9063_wdt.
+
config GPIO_WATCHDOG
tristate "Watchdog device controlled through GPIO-line"
depends on OF_GPIO
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index 468c3204c3b1..6c467a9821fe 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -173,6 +173,7 @@ obj-$(CONFIG_XEN_WDT) += xen_wdt.o
# Architecture Independent
obj-$(CONFIG_DA9052_WATCHDOG) += da9052_wdt.o
obj-$(CONFIG_DA9055_WATCHDOG) += da9055_wdt.o
+obj-$(CONFIG_DA9063_WATCHDOG) += da9063_wdt.o
obj-$(CONFIG_GPIO_WATCHDOG) += gpio_wdt.o
obj-$(CONFIG_WM831X_WATCHDOG) += wm831x_wdt.o
obj-$(CONFIG_WM8350_WATCHDOG) += wm8350_wdt.o
diff --git a/drivers/watchdog/da9063_wdt.c b/drivers/watchdog/da9063_wdt.c
new file mode 100644
index 000000000000..2cd6b2c2dd2a
--- /dev/null
+++ b/drivers/watchdog/da9063_wdt.c
@@ -0,0 +1,191 @@
+/*
+ * Watchdog driver for DA9063 PMICs.
+ *
+ * Copyright(c) 2012 Dialog Semiconductor Ltd.
+ *
+ * Author: Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/watchdog.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/mfd/da9063/registers.h>
+#include <linux/mfd/da9063/core.h>
+#include <linux/regmap.h>
+
+/*
+ * Watchdog selector to timeout in seconds.
+ * 0: WDT disabled;
+ * others: timeout = 2048 ms * 2^(TWDSCALE-1).
+ */
+static const unsigned int wdt_timeout[] = { 0, 2, 4, 8, 16, 32, 65, 131 };
+#define DA9063_TWDSCALE_DISABLE 0
+#define DA9063_TWDSCALE_MIN 1
+#define DA9063_TWDSCALE_MAX (ARRAY_SIZE(wdt_timeout) - 1)
+#define DA9063_WDT_MIN_TIMEOUT wdt_timeout[DA9063_TWDSCALE_MIN]
+#define DA9063_WDT_MAX_TIMEOUT wdt_timeout[DA9063_TWDSCALE_MAX]
+#define DA9063_WDG_TIMEOUT wdt_timeout[3]
+
+struct da9063_watchdog {
+ struct da9063 *da9063;
+ struct watchdog_device wdtdev;
+};
+
+static unsigned int da9063_wdt_timeout_to_sel(unsigned int secs)
+{
+ unsigned int i;
+
+ for (i = DA9063_TWDSCALE_MIN; i <= DA9063_TWDSCALE_MAX; i++) {
+ if (wdt_timeout[i] >= secs)
+ return i;
+ }
+
+ return DA9063_TWDSCALE_MAX;
+}
+
+static int _da9063_wdt_set_timeout(struct da9063 *da9063, unsigned int regval)
+{
+ return regmap_update_bits(da9063->regmap, DA9063_REG_CONTROL_D,
+ DA9063_TWDSCALE_MASK, regval);
+}
+
+static int da9063_wdt_start(struct watchdog_device *wdd)
+{
+ struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
+ unsigned int selector;
+ int ret;
+
+ selector = da9063_wdt_timeout_to_sel(wdt->wdtdev.timeout);
+ ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
+ if (ret)
+ dev_err(wdt->da9063->dev, "Watchdog failed to start (err = %d)\n",
+ ret);
+
+ return ret;
+}
+
+static int da9063_wdt_stop(struct watchdog_device *wdd)
+{
+ struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
+ int ret;
+
+ ret = regmap_update_bits(wdt->da9063->regmap, DA9063_REG_CONTROL_D,
+ DA9063_TWDSCALE_MASK, DA9063_TWDSCALE_DISABLE);
+ if (ret)
+ dev_alert(wdt->da9063->dev, "Watchdog failed to stop (err = %d)\n",
+ ret);
+
+ return ret;
+}
+
+static int da9063_wdt_ping(struct watchdog_device *wdd)
+{
+ struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
+ int ret;
+
+ ret = regmap_write(wdt->da9063->regmap, DA9063_REG_CONTROL_F,
+ DA9063_WATCHDOG);
+ if (ret)
+ dev_alert(wdt->da9063->dev, "Failed to ping the watchdog (err = %d)\n",
+ ret);
+
+ return ret;
+}
+
+static int da9063_wdt_set_timeout(struct watchdog_device *wdd,
+ unsigned int timeout)
+{
+ struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
+ unsigned int selector;
+ int ret;
+
+ selector = da9063_wdt_timeout_to_sel(timeout);
+ ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
+ if (ret)
+ dev_err(wdt->da9063->dev, "Failed to set watchdog timeout (err = %d)\n",
+ ret);
+ else
+ wdd->timeout = wdt_timeout[selector];
+
+ return ret;
+}
+
+static const struct watchdog_info da9063_watchdog_info = {
+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+ .identity = "DA9063 Watchdog",
+};
+
+static const struct watchdog_ops da9063_watchdog_ops = {
+ .owner = THIS_MODULE,
+ .start = da9063_wdt_start,
+ .stop = da9063_wdt_stop,
+ .ping = da9063_wdt_ping,
+ .set_timeout = da9063_wdt_set_timeout,
+};
+
+static int da9063_wdt_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct da9063 *da9063;
+ struct da9063_watchdog *wdt;
+
+ if (!pdev->dev.parent)
+ return -EINVAL;
+
+ da9063 = dev_get_drvdata(pdev->dev.parent);
+ if (!da9063)
+ return -EINVAL;
+
+ wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
+ if (!wdt)
+ return -ENOMEM;
+
+ wdt->da9063 = da9063;
+
+ wdt->wdtdev.info = &da9063_watchdog_info;
+ wdt->wdtdev.ops = &da9063_watchdog_ops;
+ wdt->wdtdev.min_timeout = DA9063_WDT_MIN_TIMEOUT;
+ wdt->wdtdev.max_timeout = DA9063_WDT_MAX_TIMEOUT;
+ wdt->wdtdev.timeout = DA9063_WDG_TIMEOUT;
+
+ wdt->wdtdev.status = WATCHDOG_NOWAYOUT_INIT_STATUS;
+
+ watchdog_set_drvdata(&wdt->wdtdev, wdt);
+ dev_set_drvdata(&pdev->dev, wdt);
+
+ ret = watchdog_register_device(&wdt->wdtdev);
+
+ return ret;
+}
+
+static int da9063_wdt_remove(struct platform_device *pdev)
+{
+ struct da9063_watchdog *wdt = dev_get_drvdata(&pdev->dev);
+
+ watchdog_unregister_device(&wdt->wdtdev);
+
+ return 0;
+}
+
+static struct platform_driver da9063_wdt_driver = {
+ .probe = da9063_wdt_probe,
+ .remove = da9063_wdt_remove,
+ .driver = {
+ .name = DA9063_DRVNAME_WATCHDOG,
+ },
+};
+module_platform_driver(da9063_wdt_driver);
+
+MODULE_AUTHOR("Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>");
+MODULE_DESCRIPTION("Watchdog driver for Dialog DA9063");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DA9063_DRVNAME_WATCHDOG);
--
2.1.0
^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
@ 2014-09-28 17:05 ` Markus Pargmann
0 siblings, 0 replies; 10+ messages in thread
From: Markus Pargmann @ 2014-09-28 17:05 UTC (permalink / raw)
To: linux-arm-kernel
From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
This driver supports the watchdog device inside the DA9063 PMIC.
Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
Notes:
Changes in v7:
- Remove unnecessary range checks
- Realign line breaks
- Cleanup use of unsigned int for selector and timeouts
Changes in v6:
- Fix compile error
Changes in v5:
- Kconfig: Add note about the module name.
- Change selector variables to int
- Style fixes
- use unsigned int to remove gcc verbose warning
- Integrate _kick() and _disable() into the calling functions
Changes in v4:
- Fixed indentation
- Fixed lock without unlock
- Check for parent device and device driver data in probe(). If not present,
this is an invalid prober initialization, return -EINVAL.
Changes in v3:
- Cleanup error handling for timeout selection and setting
- Fix race condition due to late wdt drvdata setup
- Remove static struct watchdog_device. It is not initialized in the probe
function
- Use WATCHDOG_NOWAYOUT_INIT_STATUS for the status
- Remove 0 shift using DA9063_TWDSCALE_SHIFT
drivers/watchdog/Kconfig | 9 ++
drivers/watchdog/Makefile | 1 +
drivers/watchdog/da9063_wdt.c | 191 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 201 insertions(+)
create mode 100644 drivers/watchdog/da9063_wdt.c
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index f57312fced80..669de63a7a48 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -87,6 +87,15 @@ config DA9055_WATCHDOG
This driver can also be built as a module. If so, the module
will be called da9055_wdt.
+config DA9063_WATCHDOG
+ tristate "Dialog DA9063 Watchdog"
+ depends on MFD_DA9063
+ select WATCHDOG_CORE
+ help
+ Support for the watchdog in the DA9063 PMIC.
+
+ This driver can be built as a module. The module name is da9063_wdt.
+
config GPIO_WATCHDOG
tristate "Watchdog device controlled through GPIO-line"
depends on OF_GPIO
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index 468c3204c3b1..6c467a9821fe 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -173,6 +173,7 @@ obj-$(CONFIG_XEN_WDT) += xen_wdt.o
# Architecture Independent
obj-$(CONFIG_DA9052_WATCHDOG) += da9052_wdt.o
obj-$(CONFIG_DA9055_WATCHDOG) += da9055_wdt.o
+obj-$(CONFIG_DA9063_WATCHDOG) += da9063_wdt.o
obj-$(CONFIG_GPIO_WATCHDOG) += gpio_wdt.o
obj-$(CONFIG_WM831X_WATCHDOG) += wm831x_wdt.o
obj-$(CONFIG_WM8350_WATCHDOG) += wm8350_wdt.o
diff --git a/drivers/watchdog/da9063_wdt.c b/drivers/watchdog/da9063_wdt.c
new file mode 100644
index 000000000000..2cd6b2c2dd2a
--- /dev/null
+++ b/drivers/watchdog/da9063_wdt.c
@@ -0,0 +1,191 @@
+/*
+ * Watchdog driver for DA9063 PMICs.
+ *
+ * Copyright(c) 2012 Dialog Semiconductor Ltd.
+ *
+ * Author: Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/watchdog.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/mfd/da9063/registers.h>
+#include <linux/mfd/da9063/core.h>
+#include <linux/regmap.h>
+
+/*
+ * Watchdog selector to timeout in seconds.
+ * 0: WDT disabled;
+ * others: timeout = 2048 ms * 2^(TWDSCALE-1).
+ */
+static const unsigned int wdt_timeout[] = { 0, 2, 4, 8, 16, 32, 65, 131 };
+#define DA9063_TWDSCALE_DISABLE 0
+#define DA9063_TWDSCALE_MIN 1
+#define DA9063_TWDSCALE_MAX (ARRAY_SIZE(wdt_timeout) - 1)
+#define DA9063_WDT_MIN_TIMEOUT wdt_timeout[DA9063_TWDSCALE_MIN]
+#define DA9063_WDT_MAX_TIMEOUT wdt_timeout[DA9063_TWDSCALE_MAX]
+#define DA9063_WDG_TIMEOUT wdt_timeout[3]
+
+struct da9063_watchdog {
+ struct da9063 *da9063;
+ struct watchdog_device wdtdev;
+};
+
+static unsigned int da9063_wdt_timeout_to_sel(unsigned int secs)
+{
+ unsigned int i;
+
+ for (i = DA9063_TWDSCALE_MIN; i <= DA9063_TWDSCALE_MAX; i++) {
+ if (wdt_timeout[i] >= secs)
+ return i;
+ }
+
+ return DA9063_TWDSCALE_MAX;
+}
+
+static int _da9063_wdt_set_timeout(struct da9063 *da9063, unsigned int regval)
+{
+ return regmap_update_bits(da9063->regmap, DA9063_REG_CONTROL_D,
+ DA9063_TWDSCALE_MASK, regval);
+}
+
+static int da9063_wdt_start(struct watchdog_device *wdd)
+{
+ struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
+ unsigned int selector;
+ int ret;
+
+ selector = da9063_wdt_timeout_to_sel(wdt->wdtdev.timeout);
+ ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
+ if (ret)
+ dev_err(wdt->da9063->dev, "Watchdog failed to start (err = %d)\n",
+ ret);
+
+ return ret;
+}
+
+static int da9063_wdt_stop(struct watchdog_device *wdd)
+{
+ struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
+ int ret;
+
+ ret = regmap_update_bits(wdt->da9063->regmap, DA9063_REG_CONTROL_D,
+ DA9063_TWDSCALE_MASK, DA9063_TWDSCALE_DISABLE);
+ if (ret)
+ dev_alert(wdt->da9063->dev, "Watchdog failed to stop (err = %d)\n",
+ ret);
+
+ return ret;
+}
+
+static int da9063_wdt_ping(struct watchdog_device *wdd)
+{
+ struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
+ int ret;
+
+ ret = regmap_write(wdt->da9063->regmap, DA9063_REG_CONTROL_F,
+ DA9063_WATCHDOG);
+ if (ret)
+ dev_alert(wdt->da9063->dev, "Failed to ping the watchdog (err = %d)\n",
+ ret);
+
+ return ret;
+}
+
+static int da9063_wdt_set_timeout(struct watchdog_device *wdd,
+ unsigned int timeout)
+{
+ struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
+ unsigned int selector;
+ int ret;
+
+ selector = da9063_wdt_timeout_to_sel(timeout);
+ ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
+ if (ret)
+ dev_err(wdt->da9063->dev, "Failed to set watchdog timeout (err = %d)\n",
+ ret);
+ else
+ wdd->timeout = wdt_timeout[selector];
+
+ return ret;
+}
+
+static const struct watchdog_info da9063_watchdog_info = {
+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+ .identity = "DA9063 Watchdog",
+};
+
+static const struct watchdog_ops da9063_watchdog_ops = {
+ .owner = THIS_MODULE,
+ .start = da9063_wdt_start,
+ .stop = da9063_wdt_stop,
+ .ping = da9063_wdt_ping,
+ .set_timeout = da9063_wdt_set_timeout,
+};
+
+static int da9063_wdt_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct da9063 *da9063;
+ struct da9063_watchdog *wdt;
+
+ if (!pdev->dev.parent)
+ return -EINVAL;
+
+ da9063 = dev_get_drvdata(pdev->dev.parent);
+ if (!da9063)
+ return -EINVAL;
+
+ wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
+ if (!wdt)
+ return -ENOMEM;
+
+ wdt->da9063 = da9063;
+
+ wdt->wdtdev.info = &da9063_watchdog_info;
+ wdt->wdtdev.ops = &da9063_watchdog_ops;
+ wdt->wdtdev.min_timeout = DA9063_WDT_MIN_TIMEOUT;
+ wdt->wdtdev.max_timeout = DA9063_WDT_MAX_TIMEOUT;
+ wdt->wdtdev.timeout = DA9063_WDG_TIMEOUT;
+
+ wdt->wdtdev.status = WATCHDOG_NOWAYOUT_INIT_STATUS;
+
+ watchdog_set_drvdata(&wdt->wdtdev, wdt);
+ dev_set_drvdata(&pdev->dev, wdt);
+
+ ret = watchdog_register_device(&wdt->wdtdev);
+
+ return ret;
+}
+
+static int da9063_wdt_remove(struct platform_device *pdev)
+{
+ struct da9063_watchdog *wdt = dev_get_drvdata(&pdev->dev);
+
+ watchdog_unregister_device(&wdt->wdtdev);
+
+ return 0;
+}
+
+static struct platform_driver da9063_wdt_driver = {
+ .probe = da9063_wdt_probe,
+ .remove = da9063_wdt_remove,
+ .driver = {
+ .name = DA9063_DRVNAME_WATCHDOG,
+ },
+};
+module_platform_driver(da9063_wdt_driver);
+
+MODULE_AUTHOR("Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>");
+MODULE_DESCRIPTION("Watchdog driver for Dialog DA9063");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DA9063_DRVNAME_WATCHDOG);
--
2.1.0
^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
2014-09-28 17:05 ` Markus Pargmann
@ 2014-09-28 17:19 ` Guenter Roeck
-1 siblings, 0 replies; 10+ messages in thread
From: Guenter Roeck @ 2014-09-28 17:19 UTC (permalink / raw)
To: Markus Pargmann, Wim Van Sebroeck
Cc: Support Opensource, Philipp Zabel, linux-watchdog,
linux-arm-kernel, kernel
On 09/28/2014 10:05 AM, Markus Pargmann wrote:
> From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
>
> This driver supports the watchdog device inside the DA9063 PMIC.
>
> Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Thanks for your patience,
Guenter
> ---
>
> Notes:
> Changes in v7:
> - Remove unnecessary range checks
> - Realign line breaks
> - Cleanup use of unsigned int for selector and timeouts
>
> Changes in v6:
> - Fix compile error
>
> Changes in v5:
> - Kconfig: Add note about the module name.
> - Change selector variables to int
> - Style fixes
> - use unsigned int to remove gcc verbose warning
> - Integrate _kick() and _disable() into the calling functions
>
> Changes in v4:
> - Fixed indentation
> - Fixed lock without unlock
> - Check for parent device and device driver data in probe(). If not present,
> this is an invalid prober initialization, return -EINVAL.
>
> Changes in v3:
> - Cleanup error handling for timeout selection and setting
> - Fix race condition due to late wdt drvdata setup
> - Remove static struct watchdog_device. It is not initialized in the probe
> function
> - Use WATCHDOG_NOWAYOUT_INIT_STATUS for the status
> - Remove 0 shift using DA9063_TWDSCALE_SHIFT
>
> drivers/watchdog/Kconfig | 9 ++
> drivers/watchdog/Makefile | 1 +
> drivers/watchdog/da9063_wdt.c | 191 ++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 201 insertions(+)
> create mode 100644 drivers/watchdog/da9063_wdt.c
>
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index f57312fced80..669de63a7a48 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -87,6 +87,15 @@ config DA9055_WATCHDOG
> This driver can also be built as a module. If so, the module
> will be called da9055_wdt.
>
> +config DA9063_WATCHDOG
> + tristate "Dialog DA9063 Watchdog"
> + depends on MFD_DA9063
> + select WATCHDOG_CORE
> + help
> + Support for the watchdog in the DA9063 PMIC.
> +
> + This driver can be built as a module. The module name is da9063_wdt.
> +
> config GPIO_WATCHDOG
> tristate "Watchdog device controlled through GPIO-line"
> depends on OF_GPIO
> diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
> index 468c3204c3b1..6c467a9821fe 100644
> --- a/drivers/watchdog/Makefile
> +++ b/drivers/watchdog/Makefile
> @@ -173,6 +173,7 @@ obj-$(CONFIG_XEN_WDT) += xen_wdt.o
> # Architecture Independent
> obj-$(CONFIG_DA9052_WATCHDOG) += da9052_wdt.o
> obj-$(CONFIG_DA9055_WATCHDOG) += da9055_wdt.o
> +obj-$(CONFIG_DA9063_WATCHDOG) += da9063_wdt.o
> obj-$(CONFIG_GPIO_WATCHDOG) += gpio_wdt.o
> obj-$(CONFIG_WM831X_WATCHDOG) += wm831x_wdt.o
> obj-$(CONFIG_WM8350_WATCHDOG) += wm8350_wdt.o
> diff --git a/drivers/watchdog/da9063_wdt.c b/drivers/watchdog/da9063_wdt.c
> new file mode 100644
> index 000000000000..2cd6b2c2dd2a
> --- /dev/null
> +++ b/drivers/watchdog/da9063_wdt.c
> @@ -0,0 +1,191 @@
> +/*
> + * Watchdog driver for DA9063 PMICs.
> + *
> + * Copyright(c) 2012 Dialog Semiconductor Ltd.
> + *
> + * Author: Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or (at your
> + * option) any later version.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/watchdog.h>
> +#include <linux/platform_device.h>
> +#include <linux/uaccess.h>
> +#include <linux/slab.h>
> +#include <linux/delay.h>
> +#include <linux/mfd/da9063/registers.h>
> +#include <linux/mfd/da9063/core.h>
> +#include <linux/regmap.h>
> +
> +/*
> + * Watchdog selector to timeout in seconds.
> + * 0: WDT disabled;
> + * others: timeout = 2048 ms * 2^(TWDSCALE-1).
> + */
> +static const unsigned int wdt_timeout[] = { 0, 2, 4, 8, 16, 32, 65, 131 };
> +#define DA9063_TWDSCALE_DISABLE 0
> +#define DA9063_TWDSCALE_MIN 1
> +#define DA9063_TWDSCALE_MAX (ARRAY_SIZE(wdt_timeout) - 1)
> +#define DA9063_WDT_MIN_TIMEOUT wdt_timeout[DA9063_TWDSCALE_MIN]
> +#define DA9063_WDT_MAX_TIMEOUT wdt_timeout[DA9063_TWDSCALE_MAX]
> +#define DA9063_WDG_TIMEOUT wdt_timeout[3]
> +
> +struct da9063_watchdog {
> + struct da9063 *da9063;
> + struct watchdog_device wdtdev;
> +};
> +
> +static unsigned int da9063_wdt_timeout_to_sel(unsigned int secs)
> +{
> + unsigned int i;
> +
> + for (i = DA9063_TWDSCALE_MIN; i <= DA9063_TWDSCALE_MAX; i++) {
> + if (wdt_timeout[i] >= secs)
> + return i;
> + }
> +
> + return DA9063_TWDSCALE_MAX;
> +}
> +
> +static int _da9063_wdt_set_timeout(struct da9063 *da9063, unsigned int regval)
> +{
> + return regmap_update_bits(da9063->regmap, DA9063_REG_CONTROL_D,
> + DA9063_TWDSCALE_MASK, regval);
> +}
> +
> +static int da9063_wdt_start(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + unsigned int selector;
> + int ret;
> +
> + selector = da9063_wdt_timeout_to_sel(wdt->wdtdev.timeout);
> + ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
> + if (ret)
> + dev_err(wdt->da9063->dev, "Watchdog failed to start (err = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_stop(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + int ret;
> +
> + ret = regmap_update_bits(wdt->da9063->regmap, DA9063_REG_CONTROL_D,
> + DA9063_TWDSCALE_MASK, DA9063_TWDSCALE_DISABLE);
> + if (ret)
> + dev_alert(wdt->da9063->dev, "Watchdog failed to stop (err = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_ping(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + int ret;
> +
> + ret = regmap_write(wdt->da9063->regmap, DA9063_REG_CONTROL_F,
> + DA9063_WATCHDOG);
> + if (ret)
> + dev_alert(wdt->da9063->dev, "Failed to ping the watchdog (err = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_set_timeout(struct watchdog_device *wdd,
> + unsigned int timeout)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + unsigned int selector;
> + int ret;
> +
> + selector = da9063_wdt_timeout_to_sel(timeout);
> + ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
> + if (ret)
> + dev_err(wdt->da9063->dev, "Failed to set watchdog timeout (err = %d)\n",
> + ret);
> + else
> + wdd->timeout = wdt_timeout[selector];
> +
> + return ret;
> +}
> +
> +static const struct watchdog_info da9063_watchdog_info = {
> + .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
> + .identity = "DA9063 Watchdog",
> +};
> +
> +static const struct watchdog_ops da9063_watchdog_ops = {
> + .owner = THIS_MODULE,
> + .start = da9063_wdt_start,
> + .stop = da9063_wdt_stop,
> + .ping = da9063_wdt_ping,
> + .set_timeout = da9063_wdt_set_timeout,
> +};
> +
> +static int da9063_wdt_probe(struct platform_device *pdev)
> +{
> + int ret;
> + struct da9063 *da9063;
> + struct da9063_watchdog *wdt;
> +
> + if (!pdev->dev.parent)
> + return -EINVAL;
> +
> + da9063 = dev_get_drvdata(pdev->dev.parent);
> + if (!da9063)
> + return -EINVAL;
> +
> + wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
> + if (!wdt)
> + return -ENOMEM;
> +
> + wdt->da9063 = da9063;
> +
> + wdt->wdtdev.info = &da9063_watchdog_info;
> + wdt->wdtdev.ops = &da9063_watchdog_ops;
> + wdt->wdtdev.min_timeout = DA9063_WDT_MIN_TIMEOUT;
> + wdt->wdtdev.max_timeout = DA9063_WDT_MAX_TIMEOUT;
> + wdt->wdtdev.timeout = DA9063_WDG_TIMEOUT;
> +
> + wdt->wdtdev.status = WATCHDOG_NOWAYOUT_INIT_STATUS;
> +
> + watchdog_set_drvdata(&wdt->wdtdev, wdt);
> + dev_set_drvdata(&pdev->dev, wdt);
> +
> + ret = watchdog_register_device(&wdt->wdtdev);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_remove(struct platform_device *pdev)
> +{
> + struct da9063_watchdog *wdt = dev_get_drvdata(&pdev->dev);
> +
> + watchdog_unregister_device(&wdt->wdtdev);
> +
> + return 0;
> +}
> +
> +static struct platform_driver da9063_wdt_driver = {
> + .probe = da9063_wdt_probe,
> + .remove = da9063_wdt_remove,
> + .driver = {
> + .name = DA9063_DRVNAME_WATCHDOG,
> + },
> +};
> +module_platform_driver(da9063_wdt_driver);
> +
> +MODULE_AUTHOR("Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>");
> +MODULE_DESCRIPTION("Watchdog driver for Dialog DA9063");
> +MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:" DA9063_DRVNAME_WATCHDOG);
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
@ 2014-09-28 17:19 ` Guenter Roeck
0 siblings, 0 replies; 10+ messages in thread
From: Guenter Roeck @ 2014-09-28 17:19 UTC (permalink / raw)
To: linux-arm-kernel
On 09/28/2014 10:05 AM, Markus Pargmann wrote:
> From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
>
> This driver supports the watchdog device inside the DA9063 PMIC.
>
> Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Thanks for your patience,
Guenter
> ---
>
> Notes:
> Changes in v7:
> - Remove unnecessary range checks
> - Realign line breaks
> - Cleanup use of unsigned int for selector and timeouts
>
> Changes in v6:
> - Fix compile error
>
> Changes in v5:
> - Kconfig: Add note about the module name.
> - Change selector variables to int
> - Style fixes
> - use unsigned int to remove gcc verbose warning
> - Integrate _kick() and _disable() into the calling functions
>
> Changes in v4:
> - Fixed indentation
> - Fixed lock without unlock
> - Check for parent device and device driver data in probe(). If not present,
> this is an invalid prober initialization, return -EINVAL.
>
> Changes in v3:
> - Cleanup error handling for timeout selection and setting
> - Fix race condition due to late wdt drvdata setup
> - Remove static struct watchdog_device. It is not initialized in the probe
> function
> - Use WATCHDOG_NOWAYOUT_INIT_STATUS for the status
> - Remove 0 shift using DA9063_TWDSCALE_SHIFT
>
> drivers/watchdog/Kconfig | 9 ++
> drivers/watchdog/Makefile | 1 +
> drivers/watchdog/da9063_wdt.c | 191 ++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 201 insertions(+)
> create mode 100644 drivers/watchdog/da9063_wdt.c
>
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index f57312fced80..669de63a7a48 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -87,6 +87,15 @@ config DA9055_WATCHDOG
> This driver can also be built as a module. If so, the module
> will be called da9055_wdt.
>
> +config DA9063_WATCHDOG
> + tristate "Dialog DA9063 Watchdog"
> + depends on MFD_DA9063
> + select WATCHDOG_CORE
> + help
> + Support for the watchdog in the DA9063 PMIC.
> +
> + This driver can be built as a module. The module name is da9063_wdt.
> +
> config GPIO_WATCHDOG
> tristate "Watchdog device controlled through GPIO-line"
> depends on OF_GPIO
> diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
> index 468c3204c3b1..6c467a9821fe 100644
> --- a/drivers/watchdog/Makefile
> +++ b/drivers/watchdog/Makefile
> @@ -173,6 +173,7 @@ obj-$(CONFIG_XEN_WDT) += xen_wdt.o
> # Architecture Independent
> obj-$(CONFIG_DA9052_WATCHDOG) += da9052_wdt.o
> obj-$(CONFIG_DA9055_WATCHDOG) += da9055_wdt.o
> +obj-$(CONFIG_DA9063_WATCHDOG) += da9063_wdt.o
> obj-$(CONFIG_GPIO_WATCHDOG) += gpio_wdt.o
> obj-$(CONFIG_WM831X_WATCHDOG) += wm831x_wdt.o
> obj-$(CONFIG_WM8350_WATCHDOG) += wm8350_wdt.o
> diff --git a/drivers/watchdog/da9063_wdt.c b/drivers/watchdog/da9063_wdt.c
> new file mode 100644
> index 000000000000..2cd6b2c2dd2a
> --- /dev/null
> +++ b/drivers/watchdog/da9063_wdt.c
> @@ -0,0 +1,191 @@
> +/*
> + * Watchdog driver for DA9063 PMICs.
> + *
> + * Copyright(c) 2012 Dialog Semiconductor Ltd.
> + *
> + * Author: Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or (at your
> + * option) any later version.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/watchdog.h>
> +#include <linux/platform_device.h>
> +#include <linux/uaccess.h>
> +#include <linux/slab.h>
> +#include <linux/delay.h>
> +#include <linux/mfd/da9063/registers.h>
> +#include <linux/mfd/da9063/core.h>
> +#include <linux/regmap.h>
> +
> +/*
> + * Watchdog selector to timeout in seconds.
> + * 0: WDT disabled;
> + * others: timeout = 2048 ms * 2^(TWDSCALE-1).
> + */
> +static const unsigned int wdt_timeout[] = { 0, 2, 4, 8, 16, 32, 65, 131 };
> +#define DA9063_TWDSCALE_DISABLE 0
> +#define DA9063_TWDSCALE_MIN 1
> +#define DA9063_TWDSCALE_MAX (ARRAY_SIZE(wdt_timeout) - 1)
> +#define DA9063_WDT_MIN_TIMEOUT wdt_timeout[DA9063_TWDSCALE_MIN]
> +#define DA9063_WDT_MAX_TIMEOUT wdt_timeout[DA9063_TWDSCALE_MAX]
> +#define DA9063_WDG_TIMEOUT wdt_timeout[3]
> +
> +struct da9063_watchdog {
> + struct da9063 *da9063;
> + struct watchdog_device wdtdev;
> +};
> +
> +static unsigned int da9063_wdt_timeout_to_sel(unsigned int secs)
> +{
> + unsigned int i;
> +
> + for (i = DA9063_TWDSCALE_MIN; i <= DA9063_TWDSCALE_MAX; i++) {
> + if (wdt_timeout[i] >= secs)
> + return i;
> + }
> +
> + return DA9063_TWDSCALE_MAX;
> +}
> +
> +static int _da9063_wdt_set_timeout(struct da9063 *da9063, unsigned int regval)
> +{
> + return regmap_update_bits(da9063->regmap, DA9063_REG_CONTROL_D,
> + DA9063_TWDSCALE_MASK, regval);
> +}
> +
> +static int da9063_wdt_start(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + unsigned int selector;
> + int ret;
> +
> + selector = da9063_wdt_timeout_to_sel(wdt->wdtdev.timeout);
> + ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
> + if (ret)
> + dev_err(wdt->da9063->dev, "Watchdog failed to start (err = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_stop(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + int ret;
> +
> + ret = regmap_update_bits(wdt->da9063->regmap, DA9063_REG_CONTROL_D,
> + DA9063_TWDSCALE_MASK, DA9063_TWDSCALE_DISABLE);
> + if (ret)
> + dev_alert(wdt->da9063->dev, "Watchdog failed to stop (err = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_ping(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + int ret;
> +
> + ret = regmap_write(wdt->da9063->regmap, DA9063_REG_CONTROL_F,
> + DA9063_WATCHDOG);
> + if (ret)
> + dev_alert(wdt->da9063->dev, "Failed to ping the watchdog (err = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_set_timeout(struct watchdog_device *wdd,
> + unsigned int timeout)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + unsigned int selector;
> + int ret;
> +
> + selector = da9063_wdt_timeout_to_sel(timeout);
> + ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
> + if (ret)
> + dev_err(wdt->da9063->dev, "Failed to set watchdog timeout (err = %d)\n",
> + ret);
> + else
> + wdd->timeout = wdt_timeout[selector];
> +
> + return ret;
> +}
> +
> +static const struct watchdog_info da9063_watchdog_info = {
> + .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
> + .identity = "DA9063 Watchdog",
> +};
> +
> +static const struct watchdog_ops da9063_watchdog_ops = {
> + .owner = THIS_MODULE,
> + .start = da9063_wdt_start,
> + .stop = da9063_wdt_stop,
> + .ping = da9063_wdt_ping,
> + .set_timeout = da9063_wdt_set_timeout,
> +};
> +
> +static int da9063_wdt_probe(struct platform_device *pdev)
> +{
> + int ret;
> + struct da9063 *da9063;
> + struct da9063_watchdog *wdt;
> +
> + if (!pdev->dev.parent)
> + return -EINVAL;
> +
> + da9063 = dev_get_drvdata(pdev->dev.parent);
> + if (!da9063)
> + return -EINVAL;
> +
> + wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
> + if (!wdt)
> + return -ENOMEM;
> +
> + wdt->da9063 = da9063;
> +
> + wdt->wdtdev.info = &da9063_watchdog_info;
> + wdt->wdtdev.ops = &da9063_watchdog_ops;
> + wdt->wdtdev.min_timeout = DA9063_WDT_MIN_TIMEOUT;
> + wdt->wdtdev.max_timeout = DA9063_WDT_MAX_TIMEOUT;
> + wdt->wdtdev.timeout = DA9063_WDG_TIMEOUT;
> +
> + wdt->wdtdev.status = WATCHDOG_NOWAYOUT_INIT_STATUS;
> +
> + watchdog_set_drvdata(&wdt->wdtdev, wdt);
> + dev_set_drvdata(&pdev->dev, wdt);
> +
> + ret = watchdog_register_device(&wdt->wdtdev);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_remove(struct platform_device *pdev)
> +{
> + struct da9063_watchdog *wdt = dev_get_drvdata(&pdev->dev);
> +
> + watchdog_unregister_device(&wdt->wdtdev);
> +
> + return 0;
> +}
> +
> +static struct platform_driver da9063_wdt_driver = {
> + .probe = da9063_wdt_probe,
> + .remove = da9063_wdt_remove,
> + .driver = {
> + .name = DA9063_DRVNAME_WATCHDOG,
> + },
> +};
> +module_platform_driver(da9063_wdt_driver);
> +
> +MODULE_AUTHOR("Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>");
> +MODULE_DESCRIPTION("Watchdog driver for Dialog DA9063");
> +MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:" DA9063_DRVNAME_WATCHDOG);
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
2014-09-28 17:19 ` Guenter Roeck
@ 2014-09-28 17:27 ` Markus Pargmann
-1 siblings, 0 replies; 10+ messages in thread
From: Markus Pargmann @ 2014-09-28 17:27 UTC (permalink / raw)
To: Guenter Roeck
Cc: Wim Van Sebroeck, Support Opensource, Philipp Zabel,
linux-watchdog, linux-arm-kernel, kernel
[-- Attachment #1: Type: text/plain, Size: 861 bytes --]
On Sun, Sep 28, 2014 at 10:19:56AM -0700, Guenter Roeck wrote:
> On 09/28/2014 10:05 AM, Markus Pargmann wrote:
> >From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> >
> >This driver supports the watchdog device inside the DA9063 PMIC.
> >
> >Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> >Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> >Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
>
> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Thanks for your reviews.
Best regards,
Markus
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
@ 2014-09-28 17:27 ` Markus Pargmann
0 siblings, 0 replies; 10+ messages in thread
From: Markus Pargmann @ 2014-09-28 17:27 UTC (permalink / raw)
To: linux-arm-kernel
On Sun, Sep 28, 2014 at 10:19:56AM -0700, Guenter Roeck wrote:
> On 09/28/2014 10:05 AM, Markus Pargmann wrote:
> >From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> >
> >This driver supports the watchdog device inside the DA9063 PMIC.
> >
> >Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> >Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> >Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
>
> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Thanks for your reviews.
Best regards,
Markus
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
2014-09-28 17:05 ` Markus Pargmann
@ 2014-09-29 7:55 ` Opensource [Steve Twiss]
-1 siblings, 0 replies; 10+ messages in thread
From: Opensource [Steve Twiss] @ 2014-09-29 7:55 UTC (permalink / raw)
To: Markus Pargmann, Wim Van Sebroeck
Cc: Support Opensource, Philipp Zabel, Guenter Roeck, linux-watchdog,
linux-arm-kernel, kernel
On 28 September 2014 18:06 Markus Pargmann wrote:
> From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
>
> This driver supports the watchdog device inside the DA9063 PMIC.
>
> Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
> ---
>
Thank you Markus,
I'll get a reply back to you as soon as I can ...
Regards,
Steve
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
@ 2014-09-29 7:55 ` Opensource [Steve Twiss]
0 siblings, 0 replies; 10+ messages in thread
From: Opensource [Steve Twiss] @ 2014-09-29 7:55 UTC (permalink / raw)
To: linux-arm-kernel
On 28 September 2014 18:06 Markus Pargmann wrote:
> From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
>
> This driver supports the watchdog device inside the DA9063 PMIC.
>
> Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
> ---
>
Thank you Markus,
I'll get a reply back to you as soon as I can ...
Regards,
Steve
^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
2014-09-28 17:05 ` Markus Pargmann
@ 2014-09-29 13:39 ` Opensource [Steve Twiss]
-1 siblings, 0 replies; 10+ messages in thread
From: Opensource [Steve Twiss] @ 2014-09-29 13:39 UTC (permalink / raw)
To: Markus Pargmann, Wim Van Sebroeck
Cc: Support Opensource, Philipp Zabel, Guenter Roeck, linux-watchdog,
linux-arm-kernel, kernel
On 28 September 2014 18:06, Markus Pargmann wrote:
> From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
>
> This driver supports the watchdog device inside the DA9063 PMIC.
>
> Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Steve Twiss <stwiss.opensource@diasemi.com>
Tested-by: Steve Twiss <stwiss.opensource@diasemi.com>
Best regards,
Steve
> ---
>
> Notes:
> Changes in v7:
> - Remove unnecessary range checks
> - Realign line breaks
> - Cleanup use of unsigned int for selector and timeouts
>
> Changes in v6:
> - Fix compile error
>
> Changes in v5:
> - Kconfig: Add note about the module name.
> - Change selector variables to int
> - Style fixes
> - use unsigned int to remove gcc verbose warning
> - Integrate _kick() and _disable() into the calling functions
>
> Changes in v4:
> - Fixed indentation
> - Fixed lock without unlock
> - Check for parent device and device driver data in probe(). If not present,
> this is an invalid prober initialization, return -EINVAL.
>
> Changes in v3:
> - Cleanup error handling for timeout selection and setting
> - Fix race condition due to late wdt drvdata setup
> - Remove static struct watchdog_device. It is not initialized in the probe
> function
> - Use WATCHDOG_NOWAYOUT_INIT_STATUS for the status
> - Remove 0 shift using DA9063_TWDSCALE_SHIFT
>
> drivers/watchdog/Kconfig | 9 ++
> drivers/watchdog/Makefile | 1 +
> drivers/watchdog/da9063_wdt.c | 191
> ++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 201 insertions(+)
> create mode 100644 drivers/watchdog/da9063_wdt.c
>
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index f57312fced80..669de63a7a48 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -87,6 +87,15 @@ config DA9055_WATCHDOG
> This driver can also be built as a module. If so, the module
> will be called da9055_wdt.
>
> +config DA9063_WATCHDOG
> + tristate "Dialog DA9063 Watchdog"
> + depends on MFD_DA9063
> + select WATCHDOG_CORE
> + help
> + Support for the watchdog in the DA9063 PMIC.
> +
> + This driver can be built as a module. The module name is
> da9063_wdt.
> +
> config GPIO_WATCHDOG
> tristate "Watchdog device controlled through GPIO-line"
> depends on OF_GPIO
> diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
> index 468c3204c3b1..6c467a9821fe 100644
> --- a/drivers/watchdog/Makefile
> +++ b/drivers/watchdog/Makefile
> @@ -173,6 +173,7 @@ obj-$(CONFIG_XEN_WDT) += xen_wdt.o
> # Architecture Independent
> obj-$(CONFIG_DA9052_WATCHDOG) += da9052_wdt.o
> obj-$(CONFIG_DA9055_WATCHDOG) += da9055_wdt.o
> +obj-$(CONFIG_DA9063_WATCHDOG) += da9063_wdt.o
> obj-$(CONFIG_GPIO_WATCHDOG) += gpio_wdt.o
> obj-$(CONFIG_WM831X_WATCHDOG) += wm831x_wdt.o
> obj-$(CONFIG_WM8350_WATCHDOG) += wm8350_wdt.o
> diff --git a/drivers/watchdog/da9063_wdt.c
> b/drivers/watchdog/da9063_wdt.c
> new file mode 100644
> index 000000000000..2cd6b2c2dd2a
> --- /dev/null
> +++ b/drivers/watchdog/da9063_wdt.c
> @@ -0,0 +1,191 @@
> +/*
> + * Watchdog driver for DA9063 PMICs.
> + *
> + * Copyright(c) 2012 Dialog Semiconductor Ltd.
> + *
> + * Author: Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or (at your
> + * option) any later version.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/watchdog.h>
> +#include <linux/platform_device.h>
> +#include <linux/uaccess.h>
> +#include <linux/slab.h>
> +#include <linux/delay.h>
> +#include <linux/mfd/da9063/registers.h>
> +#include <linux/mfd/da9063/core.h>
> +#include <linux/regmap.h>
> +
> +/*
> + * Watchdog selector to timeout in seconds.
> + * 0: WDT disabled;
> + * others: timeout = 2048 ms * 2^(TWDSCALE-1).
> + */
> +static const unsigned int wdt_timeout[] = { 0, 2, 4, 8, 16, 32, 65, 131 };
> +#define DA9063_TWDSCALE_DISABLE 0
> +#define DA9063_TWDSCALE_MIN 1
> +#define DA9063_TWDSCALE_MAX (ARRAY_SIZE(wdt_timeout) -
> 1)
> +#define DA9063_WDT_MIN_TIMEOUT
> wdt_timeout[DA9063_TWDSCALE_MIN]
> +#define DA9063_WDT_MAX_TIMEOUT
> wdt_timeout[DA9063_TWDSCALE_MAX]
> +#define DA9063_WDG_TIMEOUT wdt_timeout[3]
> +
> +struct da9063_watchdog {
> + struct da9063 *da9063;
> + struct watchdog_device wdtdev;
> +};
> +
> +static unsigned int da9063_wdt_timeout_to_sel(unsigned int secs)
> +{
> + unsigned int i;
> +
> + for (i = DA9063_TWDSCALE_MIN; i <= DA9063_TWDSCALE_MAX; i++)
> {
> + if (wdt_timeout[i] >= secs)
> + return i;
> + }
> +
> + return DA9063_TWDSCALE_MAX;
> +}
> +
> +static int _da9063_wdt_set_timeout(struct da9063 *da9063, unsigned int
> regval)
> +{
> + return regmap_update_bits(da9063->regmap,
> DA9063_REG_CONTROL_D,
> + DA9063_TWDSCALE_MASK, regval);
> +}
> +
> +static int da9063_wdt_start(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + unsigned int selector;
> + int ret;
> +
> + selector = da9063_wdt_timeout_to_sel(wdt->wdtdev.timeout);
> + ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
> + if (ret)
> + dev_err(wdt->da9063->dev, "Watchdog failed to start (err =
> %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_stop(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + int ret;
> +
> + ret = regmap_update_bits(wdt->da9063->regmap,
> DA9063_REG_CONTROL_D,
> + DA9063_TWDSCALE_MASK,
> DA9063_TWDSCALE_DISABLE);
> + if (ret)
> + dev_alert(wdt->da9063->dev, "Watchdog failed to stop (err
> = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_ping(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + int ret;
> +
> + ret = regmap_write(wdt->da9063->regmap,
> DA9063_REG_CONTROL_F,
> + DA9063_WATCHDOG);
> + if (ret)
> + dev_alert(wdt->da9063->dev, "Failed to ping the watchdog
> (err = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_set_timeout(struct watchdog_device *wdd,
> + unsigned int timeout)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + unsigned int selector;
> + int ret;
> +
> + selector = da9063_wdt_timeout_to_sel(timeout);
> + ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
> + if (ret)
> + dev_err(wdt->da9063->dev, "Failed to set watchdog timeout
> (err = %d)\n",
> + ret);
> + else
> + wdd->timeout = wdt_timeout[selector];
> +
> + return ret;
> +}
> +
> +static const struct watchdog_info da9063_watchdog_info = {
> + .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
> + .identity = "DA9063 Watchdog",
> +};
> +
> +static const struct watchdog_ops da9063_watchdog_ops = {
> + .owner = THIS_MODULE,
> + .start = da9063_wdt_start,
> + .stop = da9063_wdt_stop,
> + .ping = da9063_wdt_ping,
> + .set_timeout = da9063_wdt_set_timeout,
> +};
> +
> +static int da9063_wdt_probe(struct platform_device *pdev)
> +{
> + int ret;
> + struct da9063 *da9063;
> + struct da9063_watchdog *wdt;
> +
> + if (!pdev->dev.parent)
> + return -EINVAL;
> +
> + da9063 = dev_get_drvdata(pdev->dev.parent);
> + if (!da9063)
> + return -EINVAL;
> +
> + wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
> + if (!wdt)
> + return -ENOMEM;
> +
> + wdt->da9063 = da9063;
> +
> + wdt->wdtdev.info = &da9063_watchdog_info;
> + wdt->wdtdev.ops = &da9063_watchdog_ops;
> + wdt->wdtdev.min_timeout = DA9063_WDT_MIN_TIMEOUT;
> + wdt->wdtdev.max_timeout = DA9063_WDT_MAX_TIMEOUT;
> + wdt->wdtdev.timeout = DA9063_WDG_TIMEOUT;
> +
> + wdt->wdtdev.status = WATCHDOG_NOWAYOUT_INIT_STATUS;
> +
> + watchdog_set_drvdata(&wdt->wdtdev, wdt);
> + dev_set_drvdata(&pdev->dev, wdt);
> +
> + ret = watchdog_register_device(&wdt->wdtdev);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_remove(struct platform_device *pdev)
> +{
> + struct da9063_watchdog *wdt = dev_get_drvdata(&pdev->dev);
> +
> + watchdog_unregister_device(&wdt->wdtdev);
> +
> + return 0;
> +}
> +
> +static struct platform_driver da9063_wdt_driver = {
> + .probe = da9063_wdt_probe,
> + .remove = da9063_wdt_remove,
> + .driver = {
> + .name = DA9063_DRVNAME_WATCHDOG,
> + },
> +};
> +module_platform_driver(da9063_wdt_driver);
> +
> +MODULE_AUTHOR("Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>");
> +MODULE_DESCRIPTION("Watchdog driver for Dialog DA9063");
> +MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:" DA9063_DRVNAME_WATCHDOG);
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver.
@ 2014-09-29 13:39 ` Opensource [Steve Twiss]
0 siblings, 0 replies; 10+ messages in thread
From: Opensource [Steve Twiss] @ 2014-09-29 13:39 UTC (permalink / raw)
To: linux-arm-kernel
On 28 September 2014 18:06, Markus Pargmann wrote:
> From: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
>
> This driver supports the watchdog device inside the DA9063 PMIC.
>
> Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Steve Twiss <stwiss.opensource@diasemi.com>
Tested-by: Steve Twiss <stwiss.opensource@diasemi.com>
Best regards,
Steve
> ---
>
> Notes:
> Changes in v7:
> - Remove unnecessary range checks
> - Realign line breaks
> - Cleanup use of unsigned int for selector and timeouts
>
> Changes in v6:
> - Fix compile error
>
> Changes in v5:
> - Kconfig: Add note about the module name.
> - Change selector variables to int
> - Style fixes
> - use unsigned int to remove gcc verbose warning
> - Integrate _kick() and _disable() into the calling functions
>
> Changes in v4:
> - Fixed indentation
> - Fixed lock without unlock
> - Check for parent device and device driver data in probe(). If not present,
> this is an invalid prober initialization, return -EINVAL.
>
> Changes in v3:
> - Cleanup error handling for timeout selection and setting
> - Fix race condition due to late wdt drvdata setup
> - Remove static struct watchdog_device. It is not initialized in the probe
> function
> - Use WATCHDOG_NOWAYOUT_INIT_STATUS for the status
> - Remove 0 shift using DA9063_TWDSCALE_SHIFT
>
> drivers/watchdog/Kconfig | 9 ++
> drivers/watchdog/Makefile | 1 +
> drivers/watchdog/da9063_wdt.c | 191
> ++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 201 insertions(+)
> create mode 100644 drivers/watchdog/da9063_wdt.c
>
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index f57312fced80..669de63a7a48 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -87,6 +87,15 @@ config DA9055_WATCHDOG
> This driver can also be built as a module. If so, the module
> will be called da9055_wdt.
>
> +config DA9063_WATCHDOG
> + tristate "Dialog DA9063 Watchdog"
> + depends on MFD_DA9063
> + select WATCHDOG_CORE
> + help
> + Support for the watchdog in the DA9063 PMIC.
> +
> + This driver can be built as a module. The module name is
> da9063_wdt.
> +
> config GPIO_WATCHDOG
> tristate "Watchdog device controlled through GPIO-line"
> depends on OF_GPIO
> diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
> index 468c3204c3b1..6c467a9821fe 100644
> --- a/drivers/watchdog/Makefile
> +++ b/drivers/watchdog/Makefile
> @@ -173,6 +173,7 @@ obj-$(CONFIG_XEN_WDT) += xen_wdt.o
> # Architecture Independent
> obj-$(CONFIG_DA9052_WATCHDOG) += da9052_wdt.o
> obj-$(CONFIG_DA9055_WATCHDOG) += da9055_wdt.o
> +obj-$(CONFIG_DA9063_WATCHDOG) += da9063_wdt.o
> obj-$(CONFIG_GPIO_WATCHDOG) += gpio_wdt.o
> obj-$(CONFIG_WM831X_WATCHDOG) += wm831x_wdt.o
> obj-$(CONFIG_WM8350_WATCHDOG) += wm8350_wdt.o
> diff --git a/drivers/watchdog/da9063_wdt.c
> b/drivers/watchdog/da9063_wdt.c
> new file mode 100644
> index 000000000000..2cd6b2c2dd2a
> --- /dev/null
> +++ b/drivers/watchdog/da9063_wdt.c
> @@ -0,0 +1,191 @@
> +/*
> + * Watchdog driver for DA9063 PMICs.
> + *
> + * Copyright(c) 2012 Dialog Semiconductor Ltd.
> + *
> + * Author: Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or (at your
> + * option) any later version.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/watchdog.h>
> +#include <linux/platform_device.h>
> +#include <linux/uaccess.h>
> +#include <linux/slab.h>
> +#include <linux/delay.h>
> +#include <linux/mfd/da9063/registers.h>
> +#include <linux/mfd/da9063/core.h>
> +#include <linux/regmap.h>
> +
> +/*
> + * Watchdog selector to timeout in seconds.
> + * 0: WDT disabled;
> + * others: timeout = 2048 ms * 2^(TWDSCALE-1).
> + */
> +static const unsigned int wdt_timeout[] = { 0, 2, 4, 8, 16, 32, 65, 131 };
> +#define DA9063_TWDSCALE_DISABLE 0
> +#define DA9063_TWDSCALE_MIN 1
> +#define DA9063_TWDSCALE_MAX (ARRAY_SIZE(wdt_timeout) -
> 1)
> +#define DA9063_WDT_MIN_TIMEOUT
> wdt_timeout[DA9063_TWDSCALE_MIN]
> +#define DA9063_WDT_MAX_TIMEOUT
> wdt_timeout[DA9063_TWDSCALE_MAX]
> +#define DA9063_WDG_TIMEOUT wdt_timeout[3]
> +
> +struct da9063_watchdog {
> + struct da9063 *da9063;
> + struct watchdog_device wdtdev;
> +};
> +
> +static unsigned int da9063_wdt_timeout_to_sel(unsigned int secs)
> +{
> + unsigned int i;
> +
> + for (i = DA9063_TWDSCALE_MIN; i <= DA9063_TWDSCALE_MAX; i++)
> {
> + if (wdt_timeout[i] >= secs)
> + return i;
> + }
> +
> + return DA9063_TWDSCALE_MAX;
> +}
> +
> +static int _da9063_wdt_set_timeout(struct da9063 *da9063, unsigned int
> regval)
> +{
> + return regmap_update_bits(da9063->regmap,
> DA9063_REG_CONTROL_D,
> + DA9063_TWDSCALE_MASK, regval);
> +}
> +
> +static int da9063_wdt_start(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + unsigned int selector;
> + int ret;
> +
> + selector = da9063_wdt_timeout_to_sel(wdt->wdtdev.timeout);
> + ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
> + if (ret)
> + dev_err(wdt->da9063->dev, "Watchdog failed to start (err =
> %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_stop(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + int ret;
> +
> + ret = regmap_update_bits(wdt->da9063->regmap,
> DA9063_REG_CONTROL_D,
> + DA9063_TWDSCALE_MASK,
> DA9063_TWDSCALE_DISABLE);
> + if (ret)
> + dev_alert(wdt->da9063->dev, "Watchdog failed to stop (err
> = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_ping(struct watchdog_device *wdd)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + int ret;
> +
> + ret = regmap_write(wdt->da9063->regmap,
> DA9063_REG_CONTROL_F,
> + DA9063_WATCHDOG);
> + if (ret)
> + dev_alert(wdt->da9063->dev, "Failed to ping the watchdog
> (err = %d)\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_set_timeout(struct watchdog_device *wdd,
> + unsigned int timeout)
> +{
> + struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
> + unsigned int selector;
> + int ret;
> +
> + selector = da9063_wdt_timeout_to_sel(timeout);
> + ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
> + if (ret)
> + dev_err(wdt->da9063->dev, "Failed to set watchdog timeout
> (err = %d)\n",
> + ret);
> + else
> + wdd->timeout = wdt_timeout[selector];
> +
> + return ret;
> +}
> +
> +static const struct watchdog_info da9063_watchdog_info = {
> + .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
> + .identity = "DA9063 Watchdog",
> +};
> +
> +static const struct watchdog_ops da9063_watchdog_ops = {
> + .owner = THIS_MODULE,
> + .start = da9063_wdt_start,
> + .stop = da9063_wdt_stop,
> + .ping = da9063_wdt_ping,
> + .set_timeout = da9063_wdt_set_timeout,
> +};
> +
> +static int da9063_wdt_probe(struct platform_device *pdev)
> +{
> + int ret;
> + struct da9063 *da9063;
> + struct da9063_watchdog *wdt;
> +
> + if (!pdev->dev.parent)
> + return -EINVAL;
> +
> + da9063 = dev_get_drvdata(pdev->dev.parent);
> + if (!da9063)
> + return -EINVAL;
> +
> + wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
> + if (!wdt)
> + return -ENOMEM;
> +
> + wdt->da9063 = da9063;
> +
> + wdt->wdtdev.info = &da9063_watchdog_info;
> + wdt->wdtdev.ops = &da9063_watchdog_ops;
> + wdt->wdtdev.min_timeout = DA9063_WDT_MIN_TIMEOUT;
> + wdt->wdtdev.max_timeout = DA9063_WDT_MAX_TIMEOUT;
> + wdt->wdtdev.timeout = DA9063_WDG_TIMEOUT;
> +
> + wdt->wdtdev.status = WATCHDOG_NOWAYOUT_INIT_STATUS;
> +
> + watchdog_set_drvdata(&wdt->wdtdev, wdt);
> + dev_set_drvdata(&pdev->dev, wdt);
> +
> + ret = watchdog_register_device(&wdt->wdtdev);
> +
> + return ret;
> +}
> +
> +static int da9063_wdt_remove(struct platform_device *pdev)
> +{
> + struct da9063_watchdog *wdt = dev_get_drvdata(&pdev->dev);
> +
> + watchdog_unregister_device(&wdt->wdtdev);
> +
> + return 0;
> +}
> +
> +static struct platform_driver da9063_wdt_driver = {
> + .probe = da9063_wdt_probe,
> + .remove = da9063_wdt_remove,
> + .driver = {
> + .name = DA9063_DRVNAME_WATCHDOG,
> + },
> +};
> +module_platform_driver(da9063_wdt_driver);
> +
> +MODULE_AUTHOR("Mariusz Wojtasik <mariusz.wojtasik@diasemi.com>");
> +MODULE_DESCRIPTION("Watchdog driver for Dialog DA9063");
> +MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:" DA9063_DRVNAME_WATCHDOG);
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2014-09-29 13:39 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-09-28 17:05 [PATCH v7] watchdog: Add DA9063 PMIC watchdog driver Markus Pargmann
2014-09-28 17:05 ` Markus Pargmann
2014-09-28 17:19 ` Guenter Roeck
2014-09-28 17:19 ` Guenter Roeck
2014-09-28 17:27 ` Markus Pargmann
2014-09-28 17:27 ` Markus Pargmann
2014-09-29 7:55 ` Opensource [Steve Twiss]
2014-09-29 7:55 ` Opensource [Steve Twiss]
2014-09-29 13:39 ` Opensource [Steve Twiss]
2014-09-29 13:39 ` Opensource [Steve Twiss]
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