Re: [PATCH v2 01/10] mfd: max77686: Convert to use regmap_irq

Doug Anderson
2014-06-17T20:59:27Z

Javier,

On Mon, Jun 16, 2014 at 11:02 AM, Javier Martinez Canillas
<javier.martinez@collabora.co.uk> wrote:
> @@ -127,15 +175,48 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
> }
> i2c_set_clientdata(max77686->rtc, max77686);
>
> - max77686_irq_init(max77686);
> + max77686->rtc_regmap = devm_regmap_init_i2c(max77686->rtc,
> + &max77686_rtc_regmap_config);
> + if (IS_ERR(max77686->rtc_regmap)) {
> + ret = PTR_ERR(max77686->rtc_regmap);
> + dev_err(max77686->dev, "failed to allocate RTC regmap: %d\n",
> + ret);
> + goto err_unregister_i2c;
> + }
> +
> + ret = regmap_add_irq_chip(max77686->regmap, max77686->irq,
> + IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
> + IRQF_SHARED, 0, &max77686_irq_chip,
> + &max77686->irq_data);
> + if (ret != 0) {
> + dev_err(&i2c->dev, "failed to add PMIC irq chip: %d\n", ret);
> + goto err_unregister_i2c;
> + }
> + ret = regmap_add_irq_chip(max77686->rtc_regmap, max77686->irq,
> + IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
> + IRQF_SHARED, 0, &max77686_rtc_irq_chip,
> + &max77686->rtc_irq_data);
> + if (ret != 0) {
> + dev_err(&i2c->dev, "failed to add RTC irq chip: %d\n", ret);
> + goto err_del_irqc;
> + }
>
> ret = mfd_add_devices(max77686->dev, -1, max77686_devs,
> ARRAY_SIZE(max77686_devs), NULL, 0, NULL);
> if (ret < 0) {
> - mfd_remove_devices(max77686->dev);
> - i2c_unregister_device(max77686->rtc);
> + dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret);
> + goto err_del_rtc_irqc;
> }
>
> + return 0;
> +
> +err_del_rtc_irqc:
> + regmap_del_irq_chip(max77686->irq, max77686->rtc_irq_data);
> +err_del_irqc:
> + regmap_del_irq_chip(max77686->irq, max77686->irq_data);

I would imagine you either don't need these regmap_del_irq_chip() here
or that you _do_ need them in max77686_i2c_remove().

...from looking at other drivers I think the answer is to add them to
max77686_i2c_remove().

> diff --git a/include/linux/mfd/max77686-private.h b/include/linux/mfd/max77686-private.h
> index 8c75a9c..3a810b1 100644
> --- a/include/linux/mfd/max77686-private.h
> +++ b/include/linux/mfd/max77686-private.h
> @@ -205,7 +205,7 @@ enum max77686_irq {
> MAX77686_PMICIRQ_140C,
> MAX77686_PMICIRQ_120C,
>
> - MAX77686_RTCIRQ_RTC60S,
> + MAX77686_RTCIRQ_RTC60S = 0,
> MAX77686_RTCIRQ_RTCA1,
> MAX77686_RTCIRQ_RTCA2,
> MAX77686_RTCIRQ_SMPL,
> @@ -215,6 +215,25 @@ enum max77686_irq {
> MAX77686_IRQ_NR,

Maybe remove MAX77686_IRQ_NR which no longer makes any sense now that
you start over at 0 partway through.

Overall this looks good to me, so once nits above are fixed feel to
add my Reviewed-by. I've also built and booted this patch on
exynos5250-snow and tested that the RTC wakealarm fires and can even
wake the system up (with some additional work that I'll email you
about).

Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Doug Anderson <dianders@chromium.org>