linux-kernel - Re: [PATCH v2 1/1] iio: trigger: stm32-timer: Make use of device properties

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Date:   Sun, 13 Feb 2022 18:22:20 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Fabrice Gasnier <fabrice.gasnier@...s.st.com>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Olivier MOYSAN <olivier.moysan@...s.st.com>
Subject: Re: [PATCH v2 1/1] iio: trigger: stm32-timer: Make use of device
 properties

On Wed, 9 Feb 2022 15:24:22 +0100
Fabrice Gasnier <fabrice.gasnier@...s.st.com> wrote:

> On 2/5/22 6:31 PM, Jonathan Cameron wrote:
> > On Wed,  2 Feb 2022 22:41:12 +0200
> > Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:
> >   
> >> Convert the module to be property provider agnostic and allow
> >> it to be used on non-OF platforms.
> >>
> >> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>  
> > Looks fine to me.  The stm32 drivers are well maintained so I'll
> > leave this one on list a little longer for feedback.
> > 
> > +Cc: Fabrice
> >   
> >> ---
> >> v2: dropped depends on OF
> >>  drivers/iio/trigger/Kconfig               |  2 +-
> >>  drivers/iio/trigger/stm32-timer-trigger.c | 11 ++++++-----
> >>  2 files changed, 7 insertions(+), 6 deletions(-)  
> 
> Hi Andy, Jonathan,
> 
> You can add my:
> Reviewed-by: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
Applied to the togreg branch of iio.git and pushed out as testing for
0-day to poke at it and see if we missed anything.

Thanks,

Jonathan

> 
> Thanks,
> Best Regards,
> Fabrice
> 
> >>
> >> diff --git a/drivers/iio/trigger/Kconfig b/drivers/iio/trigger/Kconfig
> >> index 8cef2f7452e8..7ecb69725b1d 100644
> >> --- a/drivers/iio/trigger/Kconfig
> >> +++ b/drivers/iio/trigger/Kconfig
> >> @@ -38,7 +38,7 @@ config IIO_STM32_LPTIMER_TRIGGER
> >>  
> >>  config IIO_STM32_TIMER_TRIGGER
> >>  	tristate "STM32 Timer Trigger"
> >> -	depends on (ARCH_STM32 && OF && MFD_STM32_TIMERS) || COMPILE_TEST
> >> +	depends on (ARCH_STM32 && MFD_STM32_TIMERS) || COMPILE_TEST
> >>  	help
> >>  	  Select this option to enable STM32 Timer Trigger
> >>  
> >> diff --git a/drivers/iio/trigger/stm32-timer-trigger.c b/drivers/iio/trigger/stm32-timer-trigger.c
> >> index 4f9461e1412c..5049d9ecfc1a 100644
> >> --- a/drivers/iio/trigger/stm32-timer-trigger.c
> >> +++ b/drivers/iio/trigger/stm32-timer-trigger.c
> >> @@ -11,9 +11,10 @@
> >>  #include <linux/iio/timer/stm32-timer-trigger.h>
> >>  #include <linux/iio/trigger.h>
> >>  #include <linux/mfd/stm32-timers.h>
> >> +#include <linux/mod_devicetable.h>
> >>  #include <linux/module.h>
> >>  #include <linux/platform_device.h>
> >> -#include <linux/of_device.h>
> >> +#include <linux/property.h>
> >>  
> >>  #define MAX_TRIGGERS 7
> >>  #define MAX_VALIDS 5
> >> @@ -771,11 +772,11 @@ static int stm32_timer_trigger_probe(struct platform_device *pdev)
> >>  	unsigned int index;
> >>  	int ret;
> >>  
> >> -	if (of_property_read_u32(dev->of_node, "reg", &index))
> >> -		return -EINVAL;
> >> +	ret = device_property_read_u32(dev, "reg", &index);
> >> +	if (ret)
> >> +		return ret;
> >>  
> >> -	cfg = (const struct stm32_timer_trigger_cfg *)
> >> -		of_match_device(dev->driver->of_match_table, dev)->data;
> >> +	cfg = device_get_match_data(dev);
> >>  
> >>  	if (index >= ARRAY_SIZE(triggers_table) ||
> >>  	    index >= cfg->num_valids_table)  
> >