Update i2c_pxa_scream_blue_murder() fn to print more information
in case of error.
Signed-off-by: Jett.Zhou <jtz...@marvell.com>
[vaibhav.hirem...@linaro.org: Split patches into logical changes
and update the Changelog]
Signed-off-by: Vaibhav Hiremath <vaibhav.hirem...@linaro.org>
Cc: Wolfram Sang <w...@the-dreams.de>
Signed-off-by: Vaibhav Hiremath <vaibhav.hirem...@linaro.org>
---
drivers/i2c/busses/i2c-pxa.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index cf6c383..065e647 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -147,6 +147,7 @@ struct pxa_i2c {
unsigned int msg_idx;
unsigned int msg_ptr;
unsigned int slave_addr;
+ unsigned int req_slave_addr;
struct i2c_adapter adap;
struct clk *clk;
@@ -335,11 +336,13 @@ err_out:
static void i2c_pxa_scream_blue_murder(struct pxa_i2c *i2c, const char *why)
{
unsigned int i;
- printk(KERN_ERR "i2c: error: %s\n", why);
+ printk(KERN_ERR"i2c: <%s> slave_0x%x error: %s\n", i2c->adap.name,
+ i2c->req_slave_addr >> 1, why);
printk(KERN_ERR "i2c: msg_num: %d msg_idx: %d msg_ptr: %d\n",
i2c->msg_num, i2c->msg_idx, i2c->msg_ptr);
- printk(KERN_ERR "i2c: ICR: %08x ISR: %08x\n",
- readl(_ICR(i2c)), readl(_ISR(i2c)));
+ printk(KERN_ERR "i2c: IBMR: %08x IDBR: %08x ICR: %08x ISR: %08x\n",
+ readl(_IBMR(i2c)), readl(_IDBR(i2c)), readl(_ICR(i2c)),
+ readl(_ISR(i2c)));
printk(KERN_DEBUG "i2c: log: ");
for (i = 0; i < i2c->irqlogidx; i++)
printk("[%08x:%08x] ", i2c->isrlog[i], i2c->icrlog[i]);
@@ -736,6 +739,7 @@ static inline void i2c_pxa_start_message(struct pxa_i2c
*i2c)
* Step 1: target slave address into IDBR
*/
writel(i2c_pxa_addr_byte(i2c->msg), _IDBR(i2c));
+ i2c->req_slave_addr = i2c_pxa_addr_byte(i2c->msg);
/*
* Step 2: initiate the write.
@@ -1055,6 +1059,7 @@ static void i2c_pxa_irq_txempty(struct pxa_i2c *i2c, u32
isr)
* Write the next address.
*/
writel(i2c_pxa_addr_byte(i2c->msg), _IDBR(i2c));
+ i2c->req_slave_addr = i2c_pxa_addr_byte(i2c->msg);
/*
* And trigger a repeated start, and send the byte.
--
1.9.1
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