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authorLee Jones <lee.jones@linaro.org>2013-02-12 14:35:28 +0000
committerLee Jones <lee.jones@linaro.org>2013-03-07 12:27:31 +0800
commit5ff9090f3de360578a2a4f53812fcfce761bfaaa (patch)
treeb0ec46c9a931bdbc8c8a620009df7c69c872ca84 /drivers/mfd/ab8500-debugfs.c
parentcfc0849c66099dc62ed6d879d8128977bd087aa7 (diff)
mfd: ab8500-debug: Function to save all ABB registers to mem
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.aberg@stericsson.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Mattias WALLIN <mattias.wallin@stericsson.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/ab8500-debugfs.c')
-rw-r--r--drivers/mfd/ab8500-debugfs.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index 75366b55f16c..7febf171e755 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -601,6 +601,56 @@ 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;