linux-kernel - Re: [PATCH 2/2] staging:iio:imu:adis16400 regmap introduction.

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Message-ID: <20110908163017.GC3098@opensource.wolfsonmicro.com>
Date:	Thu, 8 Sep 2011 09:30:18 -0700
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Jonathan Cameron <jic23@....ac.uk>
Cc:	linux-kernel@...r.kernel.org, Michael.Hennerich@...log.com,
	linux-iio@...r.kernel.org
Subject: Re: [PATCH 2/2] staging:iio:imu:adis16400 regmap introduction.

On Thu, Sep 08, 2011 at 03:09:24PM +0100, Jonathan Cameron wrote:
> Apply regmap for the basic register reads and writes.
> Note not currently used at all for the mass reads
> that occur in the buffer code.

Looks good, shame adding the register access lists makes the diffstat
grow rather than shrink - a separate patch adding the access maps would
be good for showing the benefits :)

> +	case ADIS16400_DIAG_STAT:
> +		return true;
> +	default:
> +		return 0;

Should use either 1/0 or true/false consistently (probably the latter).

> +static const struct regmap_config adis16400_regmap_config = {
> +	.reg_bits = 8,
> +	.reg_pad_bits = 8,
> +	.val_bits = 16,
> +	.half_write = true,
> +	.writeable_reg = &adis16400_reg_writeable,
> +	.readable_reg = &adis16400_reg_readable,
> +	.precious_reg = &adis16400_reg_precious,
> +	.volatile_reg = &adis16400_reg_volatile,
> +	.max_register = 0x56,
> +	.write_flag_mask = 0x80,
> +	.read_flag_mask = 0,

No need to set things to zero explicitly.

> -
> +	spi->cs_between_transfers = 1;

Guess we need that change to go in first...
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