From 5d43001ae43606dc525f55c482c545afba01bb55 Mon Sep 17 00:00:00 2001 From: Jaska Uimonen Date: Tue, 8 Oct 2019 11:44:43 -0500 Subject: [PATCH] ASoC: SOF: acpi led support for switch controls Currently sof doesn't support acpi leds with mute switches. So implement acpi leds following quite shamelessly existing HDA implementation by Takashi Iwai. Mute leds can be enabled in topology by adding led and direction token in switch control private data. Signed-off-by: Jaska Uimonen Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20191008164443.1358-10-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown --- include/uapi/sound/sof/tokens.h | 4 ++++ sound/soc/sof/control.c | 32 ++++++++++++++++++++++++++++++++ sound/soc/sof/sof-priv.h | 9 +++++++++ sound/soc/sof/topology.c | 13 +++++++++++++ 4 files changed, 58 insertions(+) diff --git a/include/uapi/sound/sof/tokens.h b/include/uapi/sound/sof/tokens.h index da18c9de1056..d65406f34361 100644 --- a/include/uapi/sound/sof/tokens.h +++ b/include/uapi/sound/sof/tokens.h @@ -113,4 +113,8 @@ /* ESAI */ #define SOF_TKN_IMX_ESAI_MCLK_ID 1100 +/* Led control for mute switches */ +#define SOF_TKN_MUTE_LED_USE 1300 +#define SOF_TKN_MUTE_LED_DIRECTION 1301 + #endif diff --git a/sound/soc/sof/control.c b/sound/soc/sof/control.c index a4983f90ff5b..41551e8f6ac3 100644 --- a/sound/soc/sof/control.c +++ b/sound/soc/sof/control.c @@ -11,8 +11,37 @@ /* Mixer Controls */ #include +#include #include "sof-priv.h" +static void update_mute_led(struct snd_sof_control *scontrol, + struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + unsigned int temp = 0; + unsigned int mask; + int i; + + mask = 1U << snd_ctl_get_ioffidx(kcontrol, &ucontrol->id); + + for (i = 0; i < scontrol->num_channels; i++) { + if (ucontrol->value.integer.value[i]) { + temp |= mask; + break; + } + } + + if (temp == scontrol->led_ctl.led_value) + return; + + scontrol->led_ctl.led_value = temp; + + if (!scontrol->led_ctl.direction) + ledtrig_audio_set(LED_AUDIO_MUTE, temp ? LED_OFF : LED_ON); + else + ledtrig_audio_set(LED_AUDIO_MICMUTE, temp ? LED_OFF : LED_ON); +} + static inline u32 mixer_to_ipc(unsigned int value, u32 *volume_map, int size) { if (value >= size) @@ -112,6 +141,9 @@ int snd_sof_switch_put(struct snd_kcontrol *kcontrol, cdata->chanv[i].channel = i; } + if (scontrol->led_ctl.use_led) + update_mute_led(scontrol, kcontrol, ucontrol); + /* notify DSP of mixer updates */ if (pm_runtime_active(sdev->dev)) snd_sof_ipc_set_get_comp_data(sdev->ipc, scontrol, diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index 44f789bf7fb0..5a11a8517fa5 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -15,6 +15,7 @@ #include #include +#include #include #include /* needs to be included before control.h */ @@ -310,6 +311,12 @@ struct snd_sof_pcm { bool prepared[2]; /* PCM_PARAMS set successfully */ }; +struct snd_sof_led_control { + unsigned int use_led; + unsigned int direction; + unsigned int led_value; +}; + /* ALSA SOF Kcontrol device */ struct snd_sof_control { struct snd_sof_dev *sdev; @@ -324,6 +331,8 @@ struct snd_sof_control { u32 *volume_table; /* volume table computed from tlv data*/ struct list_head list; /* list in sdev control list */ + + struct snd_sof_led_control led_ctl; }; /* ASoC SOF DAPM widget */ diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c index 3918301c573b..2e5fab1cfbb4 100644 --- a/sound/soc/sof/topology.c +++ b/sound/soc/sof/topology.c @@ -682,6 +682,14 @@ static const struct sof_topology_token dmic_pdm_tokens[] = { static const struct sof_topology_token hda_tokens[] = { }; +/* Leds */ +static const struct sof_topology_token led_tokens[] = { + {SOF_TKN_MUTE_LED_USE, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32, + offsetof(struct snd_sof_led_control, use_led), 0}, + {SOF_TKN_MUTE_LED_DIRECTION, SND_SOC_TPLG_TUPLE_TYPE_WORD, + get_token_u32, offsetof(struct snd_sof_led_control, direction), 0}, +}; + static void sof_parse_uuid_tokens(struct snd_soc_component *scomp, void *object, const struct sof_topology_token *tokens, @@ -944,6 +952,11 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, } out: + /* set up possible led control from mixer private data */ + ret = sof_parse_tokens(scomp, &scontrol->led_ctl, led_tokens, + ARRAY_SIZE(led_tokens), mc->priv.array, + le32_to_cpu(mc->priv.size)); + dev_dbg(sdev->dev, "tplg: load kcontrol index %d chans %d\n", scontrol->comp_id, scontrol->num_channels); -- 2.11.0