linux-kernel - Re: [PATCH v4 2/5] mfd: rn5t618: add IRQ support

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Message-ID: <20191216152715.GH2369@dell>
Date:   Mon, 16 Dec 2019 15:27:15 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Andreas Kemnade <andreas@...nade.info>
Cc:     robh+dt@...nel.org, mark.rutland@....com, a.zummo@...ertech.it,
        alexandre.belloni@...tlin.com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-rtc@...r.kernel.org,
        stefan@...er.ch, b.galvani@...il.com, phh@....me,
        letux-kernel@...nphoenux.org
Subject: Re: [PATCH v4 2/5] mfd: rn5t618: add IRQ support

On Wed, 11 Dec 2019, Andreas Kemnade wrote:

> This adds support for IRQ handling in the RC5T619 which is required
> for properly implementing subdevices like RTC.
> For now only definitions for the variant RC5T619 are included.
> 
> Signed-off-by: Andreas Kemnade <andreas@...nade.info>
> ---
> Changes in v4:
> merge rn5t618-irq.c into rn5t618.c
> use macros for IRQ table
> 
> Changes in v3:
> alignment cleanup
> 
> Changes in v2:
> - no dead code, did some more testing and thinking for that
> - remove extra empty lines
>  drivers/mfd/Kconfig         |  1 +
>  drivers/mfd/rn5t618.c       | 88 +++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/mfd/rn5t618.h | 15 ++++++++
>  3 files changed, 104 insertions(+)
> 
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index ae24d3ea68ea..522e068d0082 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1057,6 +1057,7 @@ config MFD_RN5T618
>  	depends on OF
>  	select MFD_CORE
>  	select REGMAP_I2C
> +	select REGMAP_IRQ
>  	help
>  	  Say yes here to add support for the Ricoh RN5T567,
>  	  RN5T618, RC5T619 PMIC.
> diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
> index da5cd9c92a59..76d997c0cfe4 100644
> --- a/drivers/mfd/rn5t618.c
> +++ b/drivers/mfd/rn5t618.c
> @@ -8,6 +8,8 @@
>  
>  #include <linux/delay.h>
>  #include <linux/i2c.h>
> +#include <linux/interrupt.h>
> +#include <linux/irq.h>
>  #include <linux/mfd/core.h>
>  #include <linux/mfd/rn5t618.h>
>  #include <linux/module.h>
> @@ -45,9 +47,63 @@ static const struct regmap_config rn5t618_regmap_config = {
>  	.cache_type	= REGCACHE_RBTREE,
>  };
>  
> +static const struct regmap_irq rc5t619_irqs[] = {
> +	REGMAP_IRQ_REG(RN5T618_IRQ_SYS, 0, BIT(0)),
> +	REGMAP_IRQ_REG(RN5T618_IRQ_DCDC, 0, BIT(1)),
> +	REGMAP_IRQ_REG(RN5T618_IRQ_RTC, 0, BIT(2)),
> +	REGMAP_IRQ_REG(RN5T618_IRQ_ADC, 0, BIT(3)),
> +	REGMAP_IRQ_REG(RN5T618_IRQ_GPIO, 0, BIT(4)),
> +	REGMAP_IRQ_REG(RN5T618_IRQ_CHG, 0, BIT(6)),
> +};
> +
> +static const struct regmap_irq_chip rc5t619_irq_chip = {
> +	.name = "rc5t619",
> +	.irqs = rc5t619_irqs,
> +	.num_irqs = ARRAY_SIZE(rc5t619_irqs),
> +	.num_regs = 1,
> +	.status_base = RN5T618_INTMON,
> +	.mask_base = RN5T618_INTEN,
> +	.mask_invert = true,
> +};
> +
>  static struct rn5t618 *rn5t618_pm_power_off;
>  static struct notifier_block rn5t618_restart_handler;
>  
> +int rn5t618_irq_init(struct rn5t618 *rn5t618)

Static?

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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