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ARM: i.MX: iim: don't make detour over cdev API 

imx_iim_read is a iim internal function, so access the
internal functions rather than using the cdev API.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2014-05-16 10:17:14 +02:00
parent 310c20d927
commit e315ea6f7d
1 changed files with 23 additions and 18 deletions
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41
arch/arm/mach-imx/iim.c
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@ -51,6 +51,8 @@ struct iim_priv {
int sense_enable;
};
static struct iim_priv *imx_iim;
static int imx_iim_fuse_sense(struct iim_bank *bank, unsigned int row)
{
struct iim_priv *iim = bank->iim;
@ -113,6 +115,22 @@ static ssize_t imx_iim_cdev_read(struct cdev *cdev, void *buf, size_t count,
return size;
}
int imx_iim_read(unsigned int banknum, int offset, void *buf, int count)
{
struct iim_priv *iim = imx_iim;
struct iim_bank *bank;
if (!imx_iim)
return -ENODEV;
if (banknum > IIM_NUM_BANKS)
return -EINVAL;
bank = iim->bank[banknum];
return imx_iim_cdev_read(&bank->cdev, buf, count, offset, 0);
}
static int imx_iim_fuse_blow(struct iim_bank *bank, unsigned int row, u8 value)
{
struct iim_priv *iim = bank->iim;
@ -274,8 +292,13 @@ static int imx_iim_probe(struct device_d *dev)
struct iim_priv *iim;
int i, ret;
if (imx_iim)
return -EBUSY;
iim = xzalloc(sizeof(*iim));
imx_iim = iim;
strcpy(iim->dev.name, "iim");
iim->dev.parent = dev;
iim->dev.id = DEVICE_ID_SINGLE;
@ -326,21 +349,3 @@ static int imx_iim_init(void)
return 0;
}
coredevice_initcall(imx_iim_init);
int imx_iim_read(unsigned int bank, int offset, void *buf, int count)
{
struct cdev *cdev;
char *name = asprintf(DRIVERNAME "_bank%d", bank);
int ret;
cdev = cdev_open(name, O_RDONLY);
if (!cdev)
return -ENODEV;
ret = cdev_read(cdev, buf, count, offset, 0);
cdev_close(cdev);
free(name);
return ret;
}