linux-kernel - Re: [PATCH v2 RESEND] input: keyboard: snvs_pwrkey: Fix SNVS

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Date:   Tue, 27 Sep 2022 10:12:48 +0200
From:   Mattijs Korpershoek <mkorpershoek@...libre.com>
To:     Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-input@...r.kernel.org
Cc:     Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>,
        Robin van der Gracht <robin@...tonic.nl>,
        linux-kernel@...r.kernel.org, kernel@...i.sm,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, stable@...r.kernel.org,
        Martin Kepplinger <martin.kepplinger@...i.sm>
Subject: Re: [PATCH v2 RESEND] input: keyboard: snvs_pwrkey: Fix
 SNVS_HPVIDR1 register address

On Tue, Sep 27, 2022 at 08:25, Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm> wrote:

> Both i.MX6 and i.MX8 reference manuals list 0xBF8 as SNVS_HPVIDR1
> (chapters 57.9 and 6.4.5 respectively).
>
> Without this, trying to read the revision number results in 0 on
> all revisions, causing the i.MX6 quirk to apply on all platforms,
> which in turn causes the driver to synthesise power button release
> events instead of passing the real one as they happen even on
> platforms like i.MX8 where that's not wanted.
>
> Fixes: 1a26c920717a ("Input: snvs_pwrkey - send key events for i.MX6 S, DL and Q")
> Cc: <stable@...r.kernel.org>
> Tested-by: Martin Kepplinger <martin.kepplinger@...i.sm>
> Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>

Reviewed-by: Mattijs Korpershoek <mkorpershoek@...libre.com>

> ---
> Resent <20220321171755.656750-1-sebastian.krzyszkowiak@...i.sm>
> v2: augmented commit message; added cc: stable and tested-by
> ---
>  drivers/input/keyboard/snvs_pwrkey.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/input/keyboard/snvs_pwrkey.c b/drivers/input/keyboard/snvs_pwrkey.c
> index 65286762b02a..ad8660be0127 100644
> --- a/drivers/input/keyboard/snvs_pwrkey.c
> +++ b/drivers/input/keyboard/snvs_pwrkey.c
> @@ -20,7 +20,7 @@
>  #include <linux/mfd/syscon.h>
>  #include <linux/regmap.h>
>  
> -#define SNVS_HPVIDR1_REG	0xF8
> +#define SNVS_HPVIDR1_REG	0xBF8
>  #define SNVS_LPSR_REG		0x4C	/* LP Status Register */
>  #define SNVS_LPCR_REG		0x38	/* LP Control Register */
>  #define SNVS_HPSR_REG		0x14
> -- 
> 2.35.1