From: Wolfram Sang <w.sang@pengutronix.de>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Greg KH <greg@kroah.com>,
Dimitris Papastamos <dp@opensource.wolfsonmicro.com>,
Liam Girdwood <lrg@ti.com>, Samuel Oritz <sameo@linux.intel.com>,
Graeme Gregory <gg@slimlogic.co.uk>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/4] regmap: Add I2C bus support
Date: Sat, 9 Jul 2011 13:53:07 +0200 [thread overview]
Message-ID: <20110709115307.GA19804@pengutronix.de> (raw)
In-Reply-To: <1310187044-13269-2-git-send-email-broonie@opensource.wolfsonmicro.com>
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Hi Mark,
On Sat, Jul 09, 2011 at 01:50:42PM +0900, Mark Brown wrote:
> +#include <linux/regmap.h>
> +#include <linux/i2c.h>
> +#include <linux/module.h>
I second Lars-Peter with init.h here (from his first review).
> +static int regmap_i2c_read(struct device *dev,
> + const void *reg, size_t reg_size,
> + void *val, size_t val_size)
> +{
> + struct i2c_client *i2c = to_i2c_client(dev);
> + struct i2c_msg xfer[2];
> + int ret;
> +
> + if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_PROTOCOL_MANGLING))
> + return -ENOTSUPP;
Even more here. MANGLING is not needed for reading (and it will fail for a
number of i2c-masters).
Regards,
Wolfram
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2011-07-09 11:53 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-09 4:49 [PATCH 0/4] regmap: Generic I2C and SPI register map library Mark Brown
2011-07-09 4:50 ` [PATCH 1/4] regmap: Add generic non-memory mapped register access API Mark Brown
2011-07-09 4:50 ` [PATCH 2/4] regmap: Add I2C bus support Mark Brown
2011-07-09 11:53 ` Wolfram Sang [this message]
2011-07-09 14:08 ` Mark Brown
2011-07-09 14:57 ` Wolfram Sang
2011-07-10 2:59 ` Mark Brown
2011-07-10 9:03 ` Wolfram Sang
2011-07-09 4:50 ` [PATCH 3/4] regmap: Add SPI " Mark Brown
2011-07-15 2:53 ` Grant Likely
2011-07-15 4:39 ` Mark Brown
2011-07-15 5:04 ` Grant Likely
2011-07-15 5:09 ` Mark Brown
2011-07-15 9:01 ` Jonathan Cameron
2011-07-15 18:30 ` Grant Likely
2011-07-09 4:50 ` [PATCH 4/4] regulator: Convert tps65023 to use regmap API Mark Brown
2011-07-15 2:53 ` Grant Likely
2011-07-15 4:48 ` Mark Brown
2011-07-15 18:29 ` Grant Likely
2011-07-16 1:47 ` Mark Brown
2011-07-16 2:06 ` Grant Likely
2011-07-16 2:13 ` Mark Brown
2011-07-09 5:44 ` [PATCH 1/4] regmap: Add generic non-memory mapped register access API Greg KH
2011-07-15 2:53 ` Grant Likely
2011-07-15 3:25 ` Mark Brown
2011-07-15 3:30 ` Grant Likely
-- strict thread matches above, loose matches on Subject: below --
2011-07-15 6:22 [PATCH 0/4] regmap: Generic I2C and SPI register map library Mark Brown
2011-07-15 6:23 ` [PATCH 1/4] regmap: Add generic non-memory mapped register access API Mark Brown
2011-07-15 6:23 ` [PATCH 2/4] regmap: Add I2C bus support Mark Brown
2011-07-16 2:48 [PATCH 0/4] regmap: Generic I2C and SPI register map library Mark Brown
2011-07-16 2:48 ` [PATCH 1/4] regmap: Add generic non-memory mapped register access API Mark Brown
2011-07-16 2:48 ` [PATCH 2/4] regmap: Add I2C bus support Mark Brown
2011-07-18 10:04 [PATCH 0/4] regmap: Generic I2C and SPI register map library Mark Brown
2011-07-18 10:07 ` [PATCH 1/4] regmap: Add generic non-memory mapped register access API Mark Brown
2011-07-18 10:07 ` [PATCH 2/4] regmap: Add I2C bus support Mark Brown
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