Allow the direct pin config via -P option

Like -H option, now hda-emu accepts the pin config value directly
specified via -P option like 0x0a=0x12345678.

2 files changed, 13 insertions, 1 deletions

diff --git a/README b/README
index 914e67d..1624bd1 100644
--- a/README
+++ b/README
@@ -420,7 +420,8 @@ the pin-default contents found in hwC0D0/init_pin_configs sysfs file.
 You can also pass an external file name to -P option instead of the
 sysfs files in the input file.  The file must contain a pair of
 register and pin-config value in each line just like in *_pin_configs
-sysfs files.
+sysfs files.  Also, you can pass a pin config directly via -P optoin,
+e.g. -P 0x0a=0x12345678.
 
 Similarly, you can give the initial hints strings either from sysfs
 file in alsa-info.sh output or an external file via -H option.  Also,
diff --git a/hda-emu.c b/hda-emu.c
index 6d74f2e..1d04910 100644
--- a/hda-emu.c
+++ b/hda-emu.c
@@ -1092,6 +1092,17 @@ static int override_pincfg(struct xhda_codec *codec, char *pincfg)
 	struct xhda_sysfs_list *sys;
 	int is_fw_file, is_in_pincfg;
 
+	if (strchr(pincfg, '=')) {
+		/* direct pincfg string */
+		int reg, val;
+		if (sscanf(pincfg, "%i %i", &reg, &val) != 2) {
+			hda_log(HDA_LOG_ERR, "Invalid pincfg %s\n", pincfg);
+			return -EINVAL;
+		}
+		set_pincfg(codec, reg, val);
+		return 0;
+	}
+
 	for (sys = codec->sysfs_list; sys; sys = sys->next) {
 		if (sys->type == XHDA_SYS_PINCFG &&
 		    !strcmp(sys->id, pincfg)) {