ENGR00281859-1 mxc: asrc: Add debug message for asrc_isr()

asrc_isr() is mainly used to detect and record overload error,
so we add some print massage to make it easy to debug.

Also fixed an incorrect function name -- dev_debug() by using
the correct one -- dev_dbg() in dump_regs().

Signed-off-by: Nicolin Chen <B42378@freescale.com>

diff --git a/drivers/mxc/asrc/mxc_asrc.c b/drivers/mxc/asrc/mxc_asrc.c
index 46a1f770f3292a046e7e275d67415e6e53c00a77..377de8f90725e1740bff4db12343dc7e86950ee9 100644 (file)
--- a/drivers/mxc/asrc/mxc_asrc.c
+++ b/drivers/mxc/asrc/mxc_asrc.c
@@ -31,6 +31,9 @@
 #define pair_err(fmt, ...) \
        dev_err(asrc->dev, "Pair %c: " fmt, 'A' + index, ##__VA_ARGS__)
 
+#define pair_dbg(fmt, ...) \
+       dev_dbg(asrc->dev, "Pair %c: " fmt, 'A' + index, ##__VA_ARGS__)
+
 DEFINE_SPINLOCK(data_lock);
 DEFINE_SPINLOCK(pair_lock);
 
@@ -158,7 +161,7 @@ static void dump_regs(void)
        for (i = 0; i < ARRAY_SIZE(asrc_reg); i++) {
                reg = asrc_reg[i];
                regmap_read(asrc->regmap, reg, &val);
-               dev_debug(asrc->dev, "REG addr=0x%x val=0x%x\n", reg, val);
+               dev_dbg(asrc->dev, "REG addr=0x%x val=0x%x\n", reg, val);
        }
 }
 #else
@@ -550,8 +553,11 @@ void asrc_finish_conv(enum asrc_pair_index index)
 }
 EXPORT_SYMBOL(asrc_finish_conv);
 
-#define SET_OVERLOAD_ERR(index, err) \
-       do {asrc->asrc_pair[index].overload_error |= err; } while (0)
+#define SET_OVERLOAD_ERR(index, err, msg) \
+       do { \
+               asrc->asrc_pair[index].overload_error |= err; \
+               pair_dbg(msg); \
+       } while (0)
 
 static irqreturn_t asrc_isr(int irq, void *dev_id)
 {
@@ -564,15 +570,20 @@ static irqreturn_t asrc_isr(int irq, void *dev_id)
                if (asrc->asrc_pair[index].active == 0)
                        continue;
                if (status & ASRSTR_ATQOL)
-                       SET_OVERLOAD_ERR(index, ASRC_TASK_Q_OVERLOAD);
+                       SET_OVERLOAD_ERR(index, ASRC_TASK_Q_OVERLOAD,
+                                       "Task Queue FIFO overload");
                if (status & ASRSTR_AOOL(index))
-                       SET_OVERLOAD_ERR(index, ASRC_OUTPUT_TASK_OVERLOAD);
+                       SET_OVERLOAD_ERR(index, ASRC_OUTPUT_TASK_OVERLOAD,
+                                       "Output Task Overload");
                if (status & ASRSTR_AIOL(index))
-                       SET_OVERLOAD_ERR(index, ASRC_INPUT_TASK_OVERLOAD);
+                       SET_OVERLOAD_ERR(index, ASRC_INPUT_TASK_OVERLOAD,
+                                       "Input Task Overload");
                if (status & ASRSTR_AODO(index))
-                       SET_OVERLOAD_ERR(index, ASRC_OUTPUT_BUFFER_OVERFLOW);
+                       SET_OVERLOAD_ERR(index, ASRC_OUTPUT_BUFFER_OVERFLOW,
+                                       "Output Data Buffer has overflowed");
                if (status & ASRSTR_AIDU(index))
-                       SET_OVERLOAD_ERR(index, ASRC_INPUT_BUFFER_UNDERRUN);
+                       SET_OVERLOAD_ERR(index, ASRC_INPUT_BUFFER_UNDERRUN,
+                                       "Input Data Buffer has underflowed");
        }
 
        /* Clean overload error  */