ALSA: hda - add connection to thinkpad_acpi to control mute/micmute LEDs

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index ec68eae..993b25c 100644 (file)
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -3208,11 +3208,17 @@ static int cx_auto_init(struct hda_codec *codec)
        return 0;
 }
 
+static void cx_auto_free(struct hda_codec *codec)
+{
+       snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_FREE);
+       snd_hda_gen_free(codec);
+}
+
 static const struct hda_codec_ops cx_auto_patch_ops = {
        .build_controls = cx_auto_build_controls,
        .build_pcms = snd_hda_gen_build_pcms,
        .init = cx_auto_init,
-       .free = snd_hda_gen_free,
+       .free = cx_auto_free,
        .unsol_event = snd_hda_jack_unsol_event,
 #ifdef CONFIG_PM
        .check_power_status = snd_hda_gen_check_power_status,
@@ -3232,8 +3238,84 @@ enum {
        CXT_FIXUP_HEADPHONE_MIC_PIN,
        CXT_FIXUP_HEADPHONE_MIC,
        CXT_FIXUP_GPIO1,
+       CXT_FIXUP_THINKPAD_ACPI,
 };
 
+#if IS_ENABLED(CONFIG_THINKPAD_ACPI)
+
+#include <linux/thinkpad_acpi.h>
+
+static int (*led_set_func)(int, bool);
+
+static void update_tpacpi_mute_led(void *private_data, int enabled)
+{
+       struct hda_codec *codec = private_data;
+       struct conexant_spec *spec = codec->spec;
+
+       if (spec->dynamic_eapd)
+               cx_auto_vmaster_hook(private_data, enabled);
+
+       if (led_set_func)
+               led_set_func(TPACPI_LED_MUTE, !enabled);
+}
+
+static void update_tpacpi_micmute_led(struct hda_codec *codec,
+                                     struct snd_ctl_elem_value *ucontrol)
+{
+       if (!ucontrol || !led_set_func)
+               return;
+       if (strcmp("Capture Switch", ucontrol->id.name) == 0 && ucontrol->id.index == 0) {
+               /* TODO: How do I verify if it's a mono or stereo here? */
+               bool val = ucontrol->value.integer.value[0] || ucontrol->value.integer.value[1];
+               led_set_func(TPACPI_LED_MICMUTE, !val);
+       }
+}
+
+static void cxt_fixup_thinkpad_acpi(struct hda_codec *codec,
+                                 const struct hda_fixup *fix, int action)
+{
+       struct conexant_spec *spec = codec->spec;
+
+       bool removefunc = false;
+
+       if (action == HDA_FIXUP_ACT_PROBE) {
+               if (!led_set_func)
+                       led_set_func = symbol_request(tpacpi_led_set);
+               if (!led_set_func) {
+                       snd_printk(KERN_WARNING "Failed to find thinkpad-acpi symbol tpacpi_led_set\n");
+                       return;
+               }
+
+               removefunc = true;
+               if (led_set_func(TPACPI_LED_MUTE, false) >= 0) {
+                       spec->gen.vmaster_mute.hook = update_tpacpi_mute_led;
+                       removefunc = false;
+               }
+               if (led_set_func(TPACPI_LED_MICMUTE, false) >= 0) {
+                       if (spec->gen.num_adc_nids > 1)
+                               snd_printdd("Skipping micmute LED control due to several ADCs");
+                       else {
+                               spec->gen.cap_sync_hook = update_tpacpi_micmute_led;
+                               removefunc = false;
+                       }
+               }
+       }
+
+       if (led_set_func && (action == HDA_FIXUP_ACT_FREE || removefunc)) {
+               symbol_put(tpacpi_led_set);
+               led_set_func = NULL;
+       }
+}
+
+#else
+
+static void cxt_fixup_thinkpad_acpi(struct hda_codec *codec,
+                                 const struct hda_fixup *fix, int action)
+{
+}
+
+#endif
+
 static void cxt_fixup_stereo_dmic(struct hda_codec *codec,
                                  const struct hda_fixup *fix, int action)
 {
@@ -3344,6 +3426,8 @@ static const struct hda_fixup cxt_fixups[] = {
        [CXT_PINCFG_LENOVO_TP410] = {
                .type = HDA_FIXUP_PINS,
                .v.pins = cxt_pincfg_lenovo_tp410,
+               .chained = true,
+               .chain_id = CXT_FIXUP_THINKPAD_ACPI,
        },
        [CXT_PINCFG_LEMOTE_A1004] = {
                .type = HDA_FIXUP_PINS,
@@ -3385,6 +3469,10 @@ static const struct hda_fixup cxt_fixups[] = {
                        { }
                },
        },
+       [CXT_FIXUP_THINKPAD_ACPI] = {
+               .type = HDA_FIXUP_FUNC,
+               .v.func = cxt_fixup_thinkpad_acpi,
+       },
 };
 
 static const struct snd_pci_quirk cxt5051_fixups[] = {
@@ -3507,7 +3595,7 @@ static int patch_conexant_auto(struct hda_codec *codec)
        return 0;
 
  error:
-       snd_hda_gen_free(codec);
+       cx_auto_free(codec);
        return err;
 }