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From: mpa@pengutronix.de (Markus Pargmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 12/20] regmap: Introduce max_raw_io for regmap_bulk_read/write
Date: Wed, 12 Aug 2015 14:38:44 +0200	[thread overview]
Message-ID: <20150812123844.GH19600@pengutronix.de> (raw)
In-Reply-To: <20150812114931.GZ10748@sirena.org.uk>

On Wed, Aug 12, 2015 at 12:49:31PM +0100, Mark Brown wrote:
> On Wed, Aug 12, 2015 at 12:12:37PM +0200, Markus Pargmann wrote:
> 
> > +	/* if set, raw reads/writes are limited to this size */
> > +	size_t max_raw_io;
> > +
> 
> Do this separately for read and write, there's doubtless going to be
> something that has asymmetry.

Okay.

> 
> > +		if (!map->use_single_rw) {
> > +			write_count = total_bytes / map->max_raw_io;
> > +			write_bytes = map->max_raw_io;
> 
> We may not be able to fit a whole number of values into whatever the
> constraint that the bus has is and partial values don't seem like a good
> idea.

Oh right. Will change the calculation so that there are no partial
values being written.

> 
> > +			reg_stride *= write_bytes / val_bytes;
> > +		}
> 
> This is very confusing, regmap already has a concept of stride and this
> isn't the same thing.

Okay, will rename it.

Thanks,

Markus

-- 
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  reply	other threads:[~2015-08-12 12:38 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-12 10:12 [PATCH 00/20] Regmap max_raw_io and bmc150 SPI support Markus Pargmann
2015-08-12 10:12 ` [PATCH 01/20] regmap: Add missing comments about struct regmap_bus Markus Pargmann
2015-08-12 20:12   ` Hartmut Knaack
2015-08-17  7:19     ` Markus Pargmann
2015-08-12 10:12 ` [PATCH 02/20] regmap: Remove regmap_bulk_write 64bit support Markus Pargmann
2015-08-12 10:25   ` Mark Brown
2015-08-12 10:44     ` Markus Pargmann
2015-08-12 10:57       ` Mark Brown
2015-08-12 12:28         ` Markus Pargmann
2015-08-12 12:35           ` Mark Brown
2015-08-12 13:08             ` Markus Pargmann
2015-08-12 14:56               ` Mark Brown
2015-08-12 10:12 ` [PATCH 03/20] regmap: Fix integertypes for register address and value Markus Pargmann
2015-08-12 10:12 ` [PATCH 04/20] regmap: Do not skip format initialization Markus Pargmann
2015-08-12 10:43   ` Mark Brown
2015-08-12 10:12 ` [PATCH 05/20] regmap: Restructure writes in _regmap_raw_write() Markus Pargmann
2015-08-12 10:54   ` Mark Brown
2015-08-12 10:12 ` [PATCH 06/20] regmap: Fix regmap_bulk_write for bus writes Markus Pargmann
2015-08-12 11:10   ` Mark Brown
2015-08-12 12:07     ` Markus Pargmann
2015-08-12 10:12 ` [PATCH 07/20] regmap: Without bus read() or write(), force use_single_rw Markus Pargmann
2015-08-12 10:33   ` Daniel Kurtz
2015-08-12 10:45     ` Markus Pargmann
2015-08-12 11:13   ` Mark Brown
2015-08-12 10:12 ` [PATCH 08/20] regmap: Fix regmap_can_raw_write check Markus Pargmann
2015-08-12 10:12 ` [PATCH 09/20] regmap: _regmap_raw_write fix for busses without write() Markus Pargmann
2015-08-12 11:20   ` Mark Brown
2015-08-12 12:20     ` Markus Pargmann
2015-08-12 12:34       ` Mark Brown
2015-08-12 13:05         ` Markus Pargmann
2015-08-14 16:40           ` Mark Brown
2015-08-12 10:12 ` [PATCH 10/20] regmap: _regmap_raw_multi_reg_write: Add reg_write() support Markus Pargmann
2015-08-12 12:39   ` Mark Brown
2015-08-12 13:17     ` Markus Pargmann
2015-08-12 10:12 ` [PATCH 11/20] regmap: _regmap_raw_read: Add handling of busses without bus->read() Markus Pargmann
2015-08-12 11:27   ` Mark Brown
2015-08-12 12:34     ` Markus Pargmann
2015-08-14 16:34       ` Mark Brown
2015-08-12 10:12 ` [PATCH 12/20] regmap: Introduce max_raw_io for regmap_bulk_read/write Markus Pargmann
2015-08-12 11:49   ` Mark Brown
2015-08-12 12:38     ` Markus Pargmann [this message]
2015-08-12 10:12 ` [PATCH 13/20] regmap: regmap max_raw_io getter function Markus Pargmann
2015-08-12 11:51   ` Mark Brown
2015-08-12 12:51     ` Markus Pargmann
2015-08-12 10:12 ` [PATCH 14/20] regmap: Add raw_write/read checks for max_raw_write/read sizes Markus Pargmann
2015-08-12 11:57   ` Mark Brown
2015-08-12 12:47     ` Markus Pargmann
2015-08-14 16:36       ` Mark Brown
2015-08-12 10:12 ` [PATCH 15/20] regmap-i2c: Add smbus i2c block support Markus Pargmann
2015-08-12 11:59   ` Mark Brown
2015-08-12 12:52     ` Markus Pargmann
2015-08-12 10:12 ` [PATCH 16/20] iio: bmc150: Fix irq checks Markus Pargmann
2015-08-15 13:13   ` Jonathan Cameron
2015-08-17  7:24     ` Markus Pargmann
2015-08-12 10:12 ` [PATCH 17/20] iio: bmc150: Use i2c regmap Markus Pargmann
2015-08-12 12:01   ` Mark Brown
2015-08-12 12:52     ` Markus Pargmann
2015-08-15 13:27   ` Jonathan Cameron
2015-08-17  7:49     ` Markus Pargmann
2015-08-12 10:12 ` [PATCH 18/20] iio: bcm150: Remove i2c_client from private data Markus Pargmann
2015-08-15 13:33   ` Jonathan Cameron
2015-08-17  7:57     ` Markus Pargmann
2015-08-12 10:12 ` [PATCH 19/20] iio: bmc150: Split the driver into core and i2c Markus Pargmann
2015-08-15 13:41   ` Jonathan Cameron
2015-08-17  7:59     ` Markus Pargmann
2015-08-12 10:12 ` [PATCH 20/20] iio: bmc150: Add SPI driver Markus Pargmann
2015-08-12 12:03   ` Mark Brown
2015-08-17  8:00     ` Markus Pargmann
2015-08-15 13:47   ` Jonathan Cameron
2015-08-17  8:03     ` Markus Pargmann
2015-08-12 10:37 ` [PATCH 00/20] Regmap max_raw_io and bmc150 SPI support Mark Brown
2015-08-12 10:47   ` Markus Pargmann
2015-08-14 16:34     ` Mark Brown

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