From: Sangbeom Kim <sbkim73@samsung.com>
To: "'Mark Brown'" <broonie@opensource.wolfsonmicro.com>
Cc: sameo@linux.intel.com, linux-kernel@vger.kernel.org
Subject: RE: [PATCH 3/3] mfd: Add I2C control support for S5M8751
Date: Thu, 23 Jun 2011 10:25:37 +0900 [thread overview]
Message-ID: <017201cc3144$74e343d0$5ea9cb70$@com> (raw)
In-Reply-To: <20110622125050.GE23666@sirena.org.uk>
On Wed, Jun 22, 2011 at 09:51:57PM +0900, Mark Brown wrote:
> If the device doesn't support SPI this could just as well be merged into
> the main driver - the reason for splitting with devices that support
> both is that it gives more flexibility with what gets built into the
> core kernel when both APIs are enabled.
Thank for your comment,
We have a few PMIC (S5M8751, S5M8752 and others).
They have different features. And Each one will have separate core file.
But i2c interface is same.
So, I try to separate i2s code.
I would modify prefix like s5m87xx.
> > +static int s5m8751_i2c_read_device(struct s5m8751 *s5m8751, uint8_t
reg,
> > + uint8_t *val)
> > +{
> > + int ret;
> > + ret = i2c_smbus_read_byte_data(s5m8751->i2c_client, reg);
> > + if (ret < 0) {
> > + dev_err(s5m8751->dev, "failed reading at 0x%02x\n", reg);
> > + return ret;
> > + }
> > + *val = (uint8_t)ret;
>
> Why is this case required?
I want pass the read value by val
Thanks and regards,
SB Kim
next prev parent reply other threads:[~2011-06-23 1:25 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-22 5:53 [PATCH 0/3] S5M8751 core driver Sangbeom Kim
2011-06-22 5:53 ` [PATCH 1/3] mfd: Add S5M8751 register definitions Sangbeom Kim
2011-06-22 12:42 ` Mark Brown
2011-06-22 23:59 ` Sangbeom Kim
2011-06-22 5:53 ` [PATCH 2/3] mfd: Add initial S5M8751 support Sangbeom Kim
2011-06-22 12:48 ` Mark Brown
2011-06-23 1:14 ` Sangbeom Kim
2011-07-04 14:07 ` Samuel Ortiz
2011-07-04 23:49 ` Sangbeom Kim
2011-06-22 5:53 ` [PATCH 3/3] mfd: Add I2C control support for S5M8751 Sangbeom Kim
2011-06-22 8:56 ` Maxin B John
2011-06-22 12:50 ` Mark Brown
2011-06-23 1:25 ` Sangbeom Kim [this message]
2011-06-23 1:28 ` Mark Brown
2011-06-23 2:21 ` Sangbeom Kim
2011-06-23 10:35 ` Mark Brown
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