diff options
Diffstat (limited to 'sound/pci/hda/hda_cs_dsp_ctl.c')
| -rw-r--r-- | sound/pci/hda/hda_cs_dsp_ctl.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_cs_dsp_ctl.c b/sound/pci/hda/hda_cs_dsp_ctl.c new file mode 100644 index 000000000000..463ca06036bf --- /dev/null +++ b/sound/pci/hda/hda_cs_dsp_ctl.c @@ -0,0 +1,252 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// HDA DSP ALSA Control Driver +// +// Copyright 2022 Cirrus Logic, Inc. +// +// Author: Stefan Binding <sbinding@opensource.cirrus.com> + +#include <linux/module.h> +#include <sound/soc.h> +#include <linux/firmware/cirrus/cs_dsp.h> +#include <linux/firmware/cirrus/wmfw.h> +#include "hda_cs_dsp_ctl.h" + +#define ADSP_MAX_STD_CTRL_SIZE 512 + +struct hda_cs_dsp_coeff_ctl { + struct cs_dsp_coeff_ctl *cs_ctl; + struct snd_card *card; + struct snd_kcontrol *kctl; +}; + +static const char * const hda_cs_dsp_fw_text[HDA_CS_DSP_NUM_FW] = { + [HDA_CS_DSP_FW_SPK_PROT] = "Prot", + [HDA_CS_DSP_FW_SPK_CALI] = "Cali", + [HDA_CS_DSP_FW_SPK_DIAG] = "Diag", + [HDA_CS_DSP_FW_MISC] = "Misc", +}; + +const char * const hda_cs_dsp_fw_ids[HDA_CS_DSP_NUM_FW] = { + [HDA_CS_DSP_FW_SPK_PROT] = "spk-prot", + [HDA_CS_DSP_FW_SPK_CALI] = "spk-cali", + [HDA_CS_DSP_FW_SPK_DIAG] = "spk-diag", + [HDA_CS_DSP_FW_MISC] = "misc", +}; +EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_fw_ids, SND_HDA_CS_DSP_CONTROLS); + +static int hda_cs_dsp_coeff_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) +{ + struct hda_cs_dsp_coeff_ctl *ctl = (struct hda_cs_dsp_coeff_ctl *)snd_kcontrol_chip(kctl); + struct cs_dsp_coeff_ctl *cs_ctl = ctl->cs_ctl; + + uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; + uinfo->count = cs_ctl->len; + + return 0; +} + +static int hda_cs_dsp_coeff_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol) +{ + struct hda_cs_dsp_coeff_ctl *ctl = (struct hda_cs_dsp_coeff_ctl *)snd_kcontrol_chip(kctl); + struct cs_dsp_coeff_ctl *cs_ctl = ctl->cs_ctl; + char *p = ucontrol->value.bytes.data; + int ret = 0; + + mutex_lock(&cs_ctl->dsp->pwr_lock); + ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, p, cs_ctl->len); + mutex_unlock(&cs_ctl->dsp->pwr_lock); + + return ret; +} + +static int hda_cs_dsp_coeff_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol) +{ + struct hda_cs_dsp_coeff_ctl *ctl = (struct hda_cs_dsp_coeff_ctl *)snd_kcontrol_chip(kctl); + struct cs_dsp_coeff_ctl *cs_ctl = ctl->cs_ctl; + char *p = ucontrol->value.bytes.data; + int ret; + + mutex_lock(&cs_ctl->dsp->pwr_lock); + ret = cs_dsp_coeff_read_ctrl(cs_ctl, 0, p, cs_ctl->len); + mutex_unlock(&cs_ctl->dsp->pwr_lock); + + return ret; +} + +static unsigned int wmfw_convert_flags(unsigned int in) +{ + unsigned int out, rd, wr, vol; + + rd = SNDRV_CTL_ELEM_ACCESS_READ; + wr = SNDRV_CTL_ELEM_ACCESS_WRITE; + vol = SNDRV_CTL_ELEM_ACCESS_VOLATILE; + + out = 0; + + if (in) { + out |= rd; + if (in & WMFW_CTL_FLAG_WRITEABLE) + out |= wr; + if (in & WMFW_CTL_FLAG_VOLATILE) + out |= vol; + } else { + out |= rd | wr | vol; + } + + return out; +} + +static void hda_cs_dsp_add_kcontrol(struct hda_cs_dsp_coeff_ctl *ctl, const char *name) +{ + struct cs_dsp_coeff_ctl *cs_ctl = ctl->cs_ctl; + struct snd_kcontrol_new kcontrol = {0}; + struct snd_kcontrol *kctl; + int ret = 0; + + if (cs_ctl->len > ADSP_MAX_STD_CTRL_SIZE) { + dev_err(cs_ctl->dsp->dev, "KControl %s: length %zu exceeds maximum %d\n", name, + cs_ctl->len, ADSP_MAX_STD_CTRL_SIZE); + return; + } + + kcontrol.name = name; + kcontrol.info = hda_cs_dsp_coeff_info; + kcontrol.iface = SNDRV_CTL_ELEM_IFACE_MIXER; + kcontrol.access = wmfw_convert_flags(cs_ctl->flags); + kcontrol.get = hda_cs_dsp_coeff_get; + kcontrol.put = hda_cs_dsp_coeff_put; + + /* Save ctl inside private_data, ctl is owned by cs_dsp, + * and will be freed when cs_dsp removes the control */ + kctl = snd_ctl_new1(&kcontrol, (void *)ctl); + if (!kctl) + return; + + ret = snd_ctl_add(ctl->card, kctl); + if (ret) { + dev_err(cs_ctl->dsp->dev, "Failed to add KControl %s = %d\n", kcontrol.name, ret); + return; + } + + dev_dbg(cs_ctl->dsp->dev, "Added KControl: %s\n", kcontrol.name); + ctl->kctl = kctl; +} + +static void hda_cs_dsp_control_add(struct cs_dsp_coeff_ctl *cs_ctl, + const struct hda_cs_dsp_ctl_info *info) +{ + struct cs_dsp *cs_dsp = cs_ctl->dsp; + char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; + struct hda_cs_dsp_coeff_ctl *ctl; + const char *region_name; + int ret; + + region_name = cs_dsp_mem_region_name(cs_ctl->alg_region.type); + if (!region_name) { + dev_warn(cs_dsp->dev, "Unknown region type: %d\n", cs_ctl->alg_region.type); + return; + } + + ret = scnprintf(name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN, "%s %s %.12s %x", info->device_name, + cs_dsp->name, hda_cs_dsp_fw_text[info->fw_type], cs_ctl->alg_region.alg); + + if (cs_ctl->subname) { + int avail = SNDRV_CTL_ELEM_ID_NAME_MAXLEN - ret - 2; + int skip = 0; + + /* Truncate the subname from the start if it is too long */ + if (cs_ctl->subname_len > avail) + skip = cs_ctl->subname_len - avail; + + snprintf(name + ret, SNDRV_CTL_ELEM_ID_NAME_MAXLEN - ret, + " %.*s", cs_ctl->subname_len - skip, cs_ctl->subname + skip); + } + + ctl = kzalloc(sizeof(*ctl), GFP_KERNEL); + if (!ctl) + return; + + ctl->cs_ctl = cs_ctl; + ctl->card = info->card; + cs_ctl->priv = ctl; + + hda_cs_dsp_add_kcontrol(ctl, name); +} + +void hda_cs_dsp_add_controls(struct cs_dsp *dsp, const struct hda_cs_dsp_ctl_info *info) +{ + struct cs_dsp_coeff_ctl *cs_ctl; + + /* + * pwr_lock would cause mutex inversion with ALSA control lock compared + * to the get/put functions. + * It is safe to walk the list without holding a mutex because entries + * are persistent and only cs_dsp_power_up() or cs_dsp_remove() can + * change the list. + */ + lockdep_assert_not_held(&dsp->pwr_lock); + + list_for_each_entry(cs_ctl, &dsp->ctl_list, list) { + if (cs_ctl->flags & WMFW_CTL_FLAG_SYS) + continue; + + if (cs_ctl->priv) + continue; + + hda_cs_dsp_control_add(cs_ctl, info); + } +} +EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_add_controls, SND_HDA_CS_DSP_CONTROLS); + +void hda_cs_dsp_control_remove(struct cs_dsp_coeff_ctl *cs_ctl) +{ + struct hda_cs_dsp_coeff_ctl *ctl = cs_ctl->priv; + + kfree(ctl); +} +EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_control_remove, SND_HDA_CS_DSP_CONTROLS); + +int hda_cs_dsp_write_ctl(struct cs_dsp *dsp, const char *name, int type, + unsigned int alg, const void *buf, size_t len) +{ + struct cs_dsp_coeff_ctl *cs_ctl; + struct hda_cs_dsp_coeff_ctl *ctl; + int ret; + + mutex_lock(&dsp->pwr_lock); + cs_ctl = cs_dsp_get_ctl(dsp, name, type, alg); + ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, buf, len); + mutex_unlock(&dsp->pwr_lock); + if (ret < 0) + return ret; + + if (ret == 0 || (cs_ctl->flags & WMFW_CTL_FLAG_SYS)) + return 0; + + ctl = cs_ctl->priv; + + snd_ctl_notify(ctl->card, SNDRV_CTL_EVENT_MASK_VALUE, &ctl->kctl->id); + + return 0; +} +EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_write_ctl, SND_HDA_CS_DSP_CONTROLS); + +int hda_cs_dsp_read_ctl(struct cs_dsp *dsp, const char *name, int type, + unsigned int alg, void *buf, size_t len) +{ + int ret; + + mutex_lock(&dsp->pwr_lock); + ret = cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(dsp, name, type, alg), 0, buf, len); + mutex_unlock(&dsp->pwr_lock); + + return ret; + +} +EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_read_ctl, SND_HDA_CS_DSP_CONTROLS); + +MODULE_DESCRIPTION("CS_DSP ALSA Control HDA Library"); +MODULE_AUTHOR("Stefan Binding, <sbinding@opensource.cirrus.com>"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(FW_CS_DSP); |