Allow to pass a direct hint via -H option

If a string with '=' is passed to -H option, hda-emu parses the value
and handles as a hint string directly.

2 files changed, 11 insertions, 1 deletions

diff --git a/README b/README
index 6e31a44..914e67d 100644
--- a/README
+++ b/README
@@ -423,7 +423,8 @@ register and pin-config value in each line just like in *_pin_configs
 sysfs files.
 
 Similarly, you can give the initial hints strings either from sysfs
-file in alsa-info.sh output or an external file via -H option.
+file in alsa-info.sh output or an external file via -H option.  Also,
+you can pass a hint directrly via -H option, e.g. -H "jack_detect=0".
 
 If you want to debug a certain jack-plug state at the initial time,
 pass the pin NID to turn on via -j option.  When nothing is set, all
diff --git a/hda-emu.c b/hda-emu.c
index 4ac9e34..6d74f2e 100644
--- a/hda-emu.c
+++ b/hda-emu.c
@@ -1146,6 +1146,15 @@ static int load_init_hints(struct xhda_codec *codec, char *hints)
 	char buf[256];
 	struct xhda_sysfs_list *sys;
 
+	if (strchr(hints, '=')) {
+		/* direct hint string */
+		if (_parse_hints(_codec, hints)) {
+			hda_log(HDA_LOG_ERR, "Invalid hints %s\n", hints);
+			return -EINVAL;
+		}
+		return 0;
+	}
+
 	for (sys = codec->sysfs_list; sys; sys = sys->next) {
 		if (sys->type == XHDA_SYS_HINTS &&
 		    !strcmp(sys->id, hints)) {