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yaml
---
r: 250843
b: refs/heads/master
c: 4cb3f53
h: refs/heads/master
i:
  250841: b4b190c
  250839: 9ae6395
v: v3
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Virupax Sadashivpetimath authored and Ben Dooks committed May 24, 2011
1 parent f257f41 commit c5b356f
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Showing 2 changed files with 20 additions and 9 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: cd20e4fa910540c339b483d0b95ca237abf3354a
refs/heads/master: 4cb3f538cd88fddaa659a924e7abdb685cd5e784
27 changes: 19 additions & 8 deletions trunk/drivers/i2c/busses/i2c-nomadik.c
Original file line number Diff line number Diff line change
Expand Up @@ -442,7 +442,8 @@ static int read_i2c(struct nmk_i2c_dev *dev)

if (timeout == 0) {
/* controller has timedout, re-init the h/w */
dev_err(&dev->pdev->dev, "controller timed out, re-init h/w\n");
dev_err(&dev->pdev->dev, "read from slave 0x%x timed out\n",
dev->cli.slave_adr);
(void) init_hw(dev);
status = -ETIMEDOUT;
}
Expand Down Expand Up @@ -506,7 +507,8 @@ static int write_i2c(struct nmk_i2c_dev *dev)

if (timeout == 0) {
/* controller has timedout, re-init the h/w */
dev_err(&dev->pdev->dev, "controller timed out, re-init h/w\n");
dev_err(&dev->pdev->dev, "write to slave 0x%x timed out\n",
dev->cli.slave_adr);
(void) init_hw(dev);
status = -ETIMEDOUT;
}
Expand Down Expand Up @@ -568,6 +570,7 @@ static int nmk_i2c_xfer(struct i2c_adapter *i2c_adap,
int i;
u32 cause;
struct nmk_i2c_dev *dev = i2c_get_adapdata(i2c_adap);
u32 i2c_sr;

dev->busy = true;

Expand Down Expand Up @@ -607,14 +610,22 @@ static int nmk_i2c_xfer(struct i2c_adapter *i2c_adap,
status = write_i2c(dev);
}
if (status || (dev->result)) {
/* get the abort cause */
cause = (readl(dev->virtbase + I2C_SR) >> 4) & 0x7;
dev_err(&dev->pdev->dev, "%s\n",
cause >= ARRAY_SIZE(abort_causes)
? "unknown reason" : abort_causes[cause]);
i2c_sr = readl(dev->virtbase + I2C_SR);
/*
* Check if the controller I2C operation status is set
* to ABORT(11b).
*/
if (((i2c_sr >> 2) & 0x3) == 0x3) {
/* get the abort cause */
cause = (i2c_sr >> 4)
& 0x7;
dev_err(&dev->pdev->dev, "%s\n", cause >=
ARRAY_SIZE(abort_causes) ?
"unknown reason" :
abort_causes[cause]);
}

status = status ? status : dev->result;

goto out;
}
udelay(I2C_DELAY);
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