Dump function that stores all readable ABB registers to a memory
areas where they can be accessed from dump file.
Signed-off-by: Jonas Aaberg <jonas.ab...@stericsson.com>
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
Reviewed-by: Mattias WALLIN <mattias.wal...@stericsson.com>
---
drivers/mfd/ab8500-debugfs.c | 50 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index 18ff86b..250b77b 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -600,6 +600,56 @@ void ab8500_dump_all_banks(struct device *dev)
}
}
+/* Space for 500 registers. */
+#define DUMP_MAX_REGS 700
+struct ab8500_register_dump
+{
+ u8 bank;
+ u8 reg;
+ u8 value;
+ int ret;
+} ab8500_complete_register_dump[DUMP_MAX_REGS];
+
+extern int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size);
+
+/* This shall only be called upon kernel panic! */
+void ab8500_dump_all_banks_to_mem(void)
+{
+ int i, r = 0;
+ u8 bank;
+
+ pr_info("Saving all ABB registers at \"ab8500_complete_register_dump\" "
+ "for crash analyze.\n");
+
+ for (bank = 1; bank < AB8500_NUM_BANKS; bank++) {
+ for (i = 0; i < debug_ranges[bank].num_ranges; i++) {
+ u8 reg;
+
+ for (reg = debug_ranges[bank].range[i].first;
+ reg <= debug_ranges[bank].range[i].last;
+ reg++) {
+ u8 value;
+ int err;
+
+ err = prcmu_abb_read(bank, reg, &value, 1);
+
+ ab8500_complete_register_dump[r].ret = err;
+ ab8500_complete_register_dump[r].bank = bank;
+ ab8500_complete_register_dump[r].reg = reg;
+ ab8500_complete_register_dump[r].value = value;
+
+ r++;
+
+ if (r >= DUMP_MAX_REGS) {
+ pr_err("%s: too many register to
dump!\n",
+ __func__);
+ return;
+ }
+ }
+ }
+ }
+}
+
static int ab8500_all_banks_open(struct inode *inode, struct file *file)
{
struct seq_file *s;
--
1.7.10.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
