ASoC: wcd934x: WDSP debug enhancement
Add interface to trigger WDSP dumps for debug use.
Important register dump and WDSP ramdump are both collected when
DEBUG_DUMP string is sent from userspace via WDSP misc node or
when WDSP boot timeout happens.
CRs-Fixed: 2117755
Change-Id: I8b91a8939201a54512a5e3557ce771b4ff2ff075
Signed-off-by: Walter Yang <yandongy@codeaurora.org>
diff --git a/asoc/codecs/wcd-dsp-mgr.c b/asoc/codecs/wcd-dsp-mgr.c
index 6cc9f8c..9bcb635 100644
--- a/asoc/codecs/wcd-dsp-mgr.c
+++ b/asoc/codecs/wcd-dsp-mgr.c
@@ -838,6 +838,45 @@
return 0;
}
+#ifdef CONFIG_DEBUG_FS
+static int wdsp_debug_dump_handler(struct wdsp_mgr_priv *wdsp, void *arg)
+{
+ struct wdsp_err_signal_arg *err_data;
+ int ret = 0;
+
+ WDSP_MGR_MUTEX_LOCK(wdsp, wdsp->ssr_mutex);
+ /* If there is no SSR, set the SSR type to collect ramdumps */
+ if (wdsp->ssr_type == WDSP_SSR_TYPE_NO_SSR) {
+ wdsp->ssr_type = WDSP_SSR_TYPE_WDSP_DOWN;
+ } else {
+ WDSP_DBG(wdsp, "SSR handling is running, skip debug ramdump");
+ ret = 0;
+ WDSP_MGR_MUTEX_UNLOCK(wdsp, wdsp->ssr_mutex);
+ goto done;
+ }
+ if (arg) {
+ err_data = (struct wdsp_err_signal_arg *) arg;
+ memcpy(&wdsp->dump_data.err_data, err_data,
+ sizeof(*err_data));
+ } else {
+ WDSP_DBG(wdsp, "Invalid input, arg is NULL");
+ ret = -EINVAL;
+ WDSP_MGR_MUTEX_UNLOCK(wdsp, wdsp->ssr_mutex);
+ goto done;
+ }
+ wdsp_collect_ramdumps(wdsp);
+ wdsp->ssr_type = WDSP_SSR_TYPE_NO_SSR;
+ WDSP_MGR_MUTEX_UNLOCK(wdsp, wdsp->ssr_mutex);
+done:
+ return ret;
+}
+#else
+static int wdsp_debug_dump_handler(struct wdsp_mgr_priv *wdsp, void *arg)
+{
+ return 0;
+}
+#endif
+
static int wdsp_signal_handler(struct device *wdsp_dev,
enum wdsp_signal signal, void *arg)
{
@@ -866,6 +905,9 @@
case WDSP_CDC_UP_SIGNAL:
ret = wdsp_ssr_handler(wdsp, arg, WDSP_SSR_TYPE_CDC_UP);
break;
+ case WDSP_DEBUG_DUMP:
+ ret = wdsp_debug_dump_handler(wdsp, arg);
+ break;
default:
ret = -EINVAL;
break;