linux-kernel - Re: [PATCH 1/1] regmap: Add support for continously numbered pages across regmap range

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Message-ID: <20121128115638.GO32691@opensource.wolfsonmicro.com>
Date:	Wed, 28 Nov 2012 11:56:38 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	"Navada Kanyana, Mukund" <navada@...com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] regmap: Add support for continously numbered pages
 across regmap range

On Wed, Nov 28, 2012 at 11:52:22AM +0000, Navada Kanyana, Mukund wrote:

> static const struct regmap_range_cfg aic325x_ranges[] = {
>         { .name = "CONF", .range_min = 128,
>           .range_max = 383,
>           .selector_reg = 0x0,
>           .selector_mask = 0xff,
>           .selector_shift = 0,
>           .window_start = 0, .window_len =128,
>         },
>         { .name = "MINIDSP_A_CM_A", .range_min = AIC325X_ADSP_CM_A_BASE,
>           .range_max = AIC325X_ADSP_CM_A_BASE + 1152,
>           .selector_reg = 0x0,
>           .selector_mask = 0xff,
>           .selector_shift = 0,
>           .window_start = 0, .window_len =128,
>         },
> };

You appear to have two different ranges with the same selector and
window.  I'm really not sure why you expect this to work...  what
happens when someone reads from the two different ranges simultaneously?

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