+/* power up/down widgets in the all paths that match with the given NID
+ * as terminals (either start- or endpoint)
+ *
+ * returns the last changed NID, or zero if unchanged.
+ */
+static hda_nid_t set_path_power(struct hda_codec *codec, hda_nid_t nid,
+ int pin_state, int stream_state)
+{
+ struct hda_gen_spec *spec = codec->spec;
+ hda_nid_t last, changed = 0;
+ struct nid_path *path;
+ int n;
+
+ for (n = 0; n < spec->paths.used; n++) {
+ path = snd_array_elem(&spec->paths, n);
+ if (path->path[0] == nid ||
+ path->path[path->depth - 1] == nid) {
+ bool pin_old = path->pin_enabled;
+ bool stream_old = path->stream_enabled;
+
+ if (pin_state >= 0)
+ path->pin_enabled = pin_state;
+ if (stream_state >= 0)
+ path->stream_enabled = stream_state;
+ if ((!path->pin_fixed && path->pin_enabled != pin_old)
+ || path->stream_enabled != stream_old) {
+ last = path_power_update(codec, path, true);
+ if (last)
+ changed = last;
+ }
+ }
+ }
+ return changed;
+}
+
+/* check the jack status for power control */
+static bool detect_pin_state(struct hda_codec *codec, hda_nid_t pin)
+{
+ if (!is_jack_detectable(codec, pin))
+ return true;
+ return snd_hda_jack_detect_state(codec, pin) != HDA_JACK_NOT_PRESENT;
+}
+
+/* power up/down the paths of the given pin according to the jack state;
+ * power = 0/1 : only power up/down if it matches with the jack state,
+ * < 0 : force power up/down to follow the jack sate
+ *
+ * returns the last changed NID, or zero if unchanged.
+ */
+static hda_nid_t set_pin_power_jack(struct hda_codec *codec, hda_nid_t pin,
+ int power)
+{
+ bool on;
+
+ if (!codec->power_save_node)
+ return 0;
+
+ on = detect_pin_state(codec, pin);
+
+ if (power >= 0 && on != power)
+ return 0;
+ return set_path_power(codec, pin, on, -1);
+}
+
+static void pin_power_callback(struct hda_codec *codec,
+ struct hda_jack_callback *jack,
+ bool on)
+{
+ if (jack && jack->tbl->nid)
+ sync_power_state_change(codec,
+ set_pin_power_jack(codec, jack->tbl->nid, on));
+}
+
+/* callback only doing power up -- called at first */
+static void pin_power_up_callback(struct hda_codec *codec,
+ struct hda_jack_callback *jack)
+{
+ pin_power_callback(codec, jack, true);
+}
+
+/* callback only doing power down -- called at last */
+static void pin_power_down_callback(struct hda_codec *codec,
+ struct hda_jack_callback *jack)
+{
+ pin_power_callback(codec, jack, false);
+}
+
+/* set up the power up/down callbacks */
+static void add_pin_power_ctls(struct hda_codec *codec, int num_pins,
+ const hda_nid_t *pins, bool on)
+{
+ int i;
+ hda_jack_callback_fn cb =
+ on ? pin_power_up_callback : pin_power_down_callback;
+
+ for (i = 0; i < num_pins && pins[i]; i++) {
+ if (is_jack_detectable(codec, pins[i]))
+ snd_hda_jack_detect_enable_callback(codec, pins[i], cb);
+ else
+ set_path_power(codec, pins[i], true, -1);
+ }
+}
+
+/* enabled power callback to each available I/O pin with jack detections;
+ * the digital I/O pins are excluded because of the unreliable detectsion
+ */
+static void add_all_pin_power_ctls(struct hda_codec *codec, bool on)
+{
+ struct hda_gen_spec *spec = codec->spec;
+ struct auto_pin_cfg *cfg = &spec->autocfg;
+ int i;
+
+ if (!codec->power_save_node)
+ return;
+ add_pin_power_ctls(codec, cfg->line_outs, cfg->line_out_pins, on);
+ if (cfg->line_out_type != AUTO_PIN_HP_OUT)
+ add_pin_power_ctls(codec, cfg->hp_outs, cfg->hp_pins, on);
+ if (cfg->line_out_type != AUTO_PIN_SPEAKER_OUT)
+ add_pin_power_ctls(codec, cfg->speaker_outs, cfg->speaker_pins, on);
+ for (i = 0; i < cfg->num_inputs; i++)
+ add_pin_power_ctls(codec, 1, &cfg->inputs[i].pin, on);
+}
+
+/* sync path power up/down with the jack states of given pins */
+static void sync_pin_power_ctls(struct hda_codec *codec, int num_pins,
+ const hda_nid_t *pins)
+{
+ int i;
+
+ for (i = 0; i < num_pins && pins[i]; i++)
+ if (is_jack_detectable(codec, pins[i]))
+ set_pin_power_jack(codec, pins[i], -1);
+}
+
+/* sync path power up/down with pins; called at init and resume */
+static void sync_all_pin_power_ctls(struct hda_codec *codec)
+{
+ struct hda_gen_spec *spec = codec->spec;
+ struct auto_pin_cfg *cfg = &spec->autocfg;
+ int i;
+
+ if (!codec->power_save_node)
+ return;
+ sync_pin_power_ctls(codec, cfg->line_outs, cfg->line_out_pins);
+ if (cfg->line_out_type != AUTO_PIN_HP_OUT)
+ sync_pin_power_ctls(codec, cfg->hp_outs, cfg->hp_pins);
+ if (cfg->line_out_type != AUTO_PIN_SPEAKER_OUT)
+ sync_pin_power_ctls(codec, cfg->speaker_outs, cfg->speaker_pins);
+ for (i = 0; i < cfg->num_inputs; i++)
+ sync_pin_power_ctls(codec, 1, &cfg->inputs[i].pin);
+}
+
+/* add fake paths if not present yet */
+static int add_fake_paths(struct hda_codec *codec, hda_nid_t nid,
+ int num_pins, const hda_nid_t *pins)
+{
+ struct hda_gen_spec *spec = codec->spec;
+ struct nid_path *path;
+ int i;
+
+ for (i = 0; i < num_pins; i++) {
+ if (!pins[i])
+ break;
+ if (get_nid_path(codec, nid, pins[i], 0))
+ continue;
+ path = snd_array_new(&spec->paths);
+ if (!path)
+ return -ENOMEM;
+ memset(path, 0, sizeof(*path));
+ path->depth = 2;
+ path->path[0] = nid;
+ path->path[1] = pins[i];
+ path->active = true;
+ }
+ return 0;
+}
+
+/* create fake paths to all outputs from beep */
+static int add_fake_beep_paths(struct hda_codec *codec)
+{
+ struct hda_gen_spec *spec = codec->spec;
+ struct auto_pin_cfg *cfg = &spec->autocfg;
+ hda_nid_t nid = spec->beep_nid;
+ int err;
+
+ if (!codec->power_save_node || !nid)
+ return 0;
+ err = add_fake_paths(codec, nid, cfg->line_outs, cfg->line_out_pins);
+ if (err < 0)
+ return err;
+ if (cfg->line_out_type != AUTO_PIN_HP_OUT) {
+ err = add_fake_paths(codec, nid, cfg->hp_outs, cfg->hp_pins);
+ if (err < 0)
+ return err;
+ }
+ if (cfg->line_out_type != AUTO_PIN_SPEAKER_OUT) {
+ err = add_fake_paths(codec, nid, cfg->speaker_outs,
+ cfg->speaker_pins);
+ if (err < 0)
+ return err;
+ }
+ return 0;
+}
+
+/* power up/down beep widget and its output paths */
+static void beep_power_hook(struct hda_beep *beep, bool on)
+{
+ set_path_power(beep->codec, beep->nid, -1, on);
+}
+
+/**
+ * snd_hda_gen_fix_pin_power - Fix the power of the given pin widget to D0
+ * @codec: the HDA codec
+ * @pin: NID of pin to fix
+ */
+int snd_hda_gen_fix_pin_power(struct hda_codec *codec, hda_nid_t pin)
+{
+ struct hda_gen_spec *spec = codec->spec;
+ struct nid_path *path;
+
+ path = snd_array_new(&spec->paths);
+ if (!path)
+ return -ENOMEM;
+ memset(path, 0, sizeof(*path));
+ path->depth = 1;
+ path->path[0] = pin;
+ path->active = true;
+ path->pin_fixed = true;
+ path->stream_enabled = true;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hda_gen_fix_pin_power);