On Thursday 21 July 2011 04:57 PM, Santosh Shilimkar wrote:
Thanks for your review.
On 7/21/2011 4:39 PM, Shubhrajyoti D wrote:
<snip>
+ /*
+ * Enabling all wakup sources to stop I2C freezing on
+ * WFI instruction.
+ * REVISIT: Some wkup sources might not be needed.
+ */
Surely not related to your patch. But the 'REVISIT:' caught
my attention. Is the comment still valid.
Yes I will look and optimise the settings. Obviously all of them may not
be needed.
Will get back on this.
Also I see that we are not writing it for " < OMAP_I2C_REV_ON_3530_4430"
I will send a patch correcting the same.
+ dev->westate = OMAP_I2C_WE_ALL;
+ if (dev->rev< OMAP_I2C_REV_ON_3530_4430)
Space if (dev->rev < OMAP_I2C_REV_ON_3530_4430)
+ omap_i2c_write_reg(dev, OMAP_I2C_WE_REG,
+ dev->westate);
}
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
@@ -612,6 +572,11 @@ static int omap_i2c_xfer_msg(struct i2c_adapter
*adap,
return r;
if (r == 0) {
dev_err(dev->dev, "controller timed out\n");
+ if (dev->device_reset != NULL) {
+ r = dev->device_reset(dev->dev);
+ if (r< 0)
ditto
+ dev_err(dev->dev, "reset failed\n");
+ }
omap_i2c_init(dev);
return -ETIMEDOUT;
}
@@ -622,6 +587,11 @@ static int omap_i2c_xfer_msg(struct i2c_adapter
*adap,
/* We have an error */
if (dev->cmd_err& (OMAP_I2C_STAT_AL | OMAP_I2C_STAT_ROVR |
You can fix this one as well.
OMAP_I2C_STAT_XUDF)) {
+ if (dev->device_reset != NULL) {
+ r = dev->device_reset(dev->dev);
+ if (r< 0)
here too.
+ dev_err(dev->dev, "reset failed\n");
+ }
omap_i2c_init(dev);
return -EIO;
}
@@ -1024,6 +994,7 @@ omap_i2c_probe(struct platform_device *pdev)
if (pdata != NULL) {
speed = pdata->clkrate;
dev->set_mpu_wkup_lat = pdata->set_mpu_wkup_lat;
+ dev->device_reset = pdata->device_reset;
} else {
speed = 100; /* Default speed */
dev->set_mpu_wkup_lat = NULL;
Regards
Santosh
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