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authorVaibhav Hiremath <vaibhav.hiremath@linaro.org>2015-07-14 10:36:44 +0300
committerWolfram Sang <wsa@the-dreams.de>2015-08-10 09:37:30 +0300
commit3a2dc1677b60af250bea85d470ef5151c70a1264 (patch)
tree5843d19d66837ef064338e0c739a13a13f3f3b92 /drivers/i2c/busses/i2c-pxa.c
parente2b498fd55a871ab3913914b982e3dd07d32e90e (diff)
downloadlinux-3a2dc1677b60af250bea85d470ef5151c70a1264.tar.xz
i2c: pxa: Update debug function to dump more info on error
Update i2c_pxa_scream_blue_murder() fn to print more information in case of error. Also, use dev_err variants instead of printk. Signed-off-by: Jett.Zhou <jtzhou@marvell.com> Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org> Cc: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-pxa.c')
-rw-r--r--drivers/i2c/busses/i2c-pxa.c22
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index d0cc058f42c3..beeed7c53f2d 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -132,6 +132,7 @@ 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;
@@ -253,15 +254,20 @@ static void i2c_pxa_show_state(struct pxa_i2c *i2c, int lno, const char *fname)
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: msg_num: %d msg_idx: %d msg_ptr: %d\n",
+ struct device *dev = &i2c->adap.dev;
+
+ dev_err(dev, "slave_0x%x error: %s\n",
+ i2c->req_slave_addr >> 1, why);
+ dev_err(dev, "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_DEBUG "i2c: log: ");
+ dev_err(dev, "IBMR: %08x IDBR: %08x ICR: %08x ISR: %08x\n",
+ readl(_IBMR(i2c)), readl(_IDBR(i2c)), readl(_ICR(i2c)),
+ readl(_ISR(i2c)));
+ dev_dbg(dev, "log: ");
for (i = 0; i < i2c->irqlogidx; i++)
- printk("[%08x:%08x] ", i2c->isrlog[i], i2c->icrlog[i]);
- printk("\n");
+ pr_debug("[%08x:%08x] ", i2c->isrlog[i], i2c->icrlog[i]);
+
+ pr_debug("\n");
}
#else /* ifdef DEBUG */
@@ -638,6 +644,7 @@ 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.
@@ -951,6 +958,7 @@ 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.