^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) // hdac_component.c - routines for sync between HD-A core and DRM driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/component.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <sound/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <sound/hdaudio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <sound/hda_component.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <sound/hda_register.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static void hdac_acomp_release(struct device *dev, void *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static struct drm_audio_component *hdac_get_acomp(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) return devres_find(dev, hdac_acomp_release, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * snd_hdac_set_codec_wakeup - Enable / disable HDMI/DP codec wakeup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * @bus: HDA core bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * @enable: enable or disable the wakeup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * This function is supposed to be used only by a HD-audio controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * driver that needs the interaction with graphics driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * This function should be called during the chip reset, also called at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * resume for updating STATESTS register read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * Returns zero for success or a negative error code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct drm_audio_component *acomp = bus->audio_component;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (!acomp || !acomp->ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (!acomp->ops->codec_wake_override)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) dev_dbg(bus->dev, "%s codec wakeup\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) enable ? "enable" : "disable");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) acomp->ops->codec_wake_override(acomp->dev, enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) EXPORT_SYMBOL_GPL(snd_hdac_set_codec_wakeup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * snd_hdac_display_power - Power up / down the power refcount
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * @bus: HDA core bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * @idx: HDA codec address, pass HDA_CODEC_IDX_CONTROLLER for controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * @enable: power up or down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * This function is used by either HD-audio controller or codec driver that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * needs the interaction with graphics driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * This function updates the power status, and calls the get_power() and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * put_power() ops accordingly, toggling the codec wakeup, too.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) void snd_hdac_display_power(struct hdac_bus *bus, unsigned int idx, bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct drm_audio_component *acomp = bus->audio_component;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) dev_dbg(bus->dev, "display power %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) enable ? "enable" : "disable");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) mutex_lock(&bus->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) set_bit(idx, &bus->display_power_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) clear_bit(idx, &bus->display_power_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (!acomp || !acomp->ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (bus->display_power_status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (!bus->display_power_active) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) unsigned long cookie = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (acomp->ops->get_power)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) cookie = acomp->ops->get_power(acomp->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) snd_hdac_set_codec_wakeup(bus, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) snd_hdac_set_codec_wakeup(bus, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) bus->display_power_active = cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (bus->display_power_active) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) unsigned long cookie = bus->display_power_active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (acomp->ops->put_power)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) acomp->ops->put_power(acomp->dev, cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) bus->display_power_active = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) mutex_unlock(&bus->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) EXPORT_SYMBOL_GPL(snd_hdac_display_power);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * snd_hdac_sync_audio_rate - Set N/CTS based on the sample rate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * @codec: HDA codec
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * @nid: the pin widget NID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * @dev_id: device identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * @rate: the sample rate to set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * This function is supposed to be used only by a HD-audio controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * driver that needs the interaction with graphics driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * This function sets N/CTS value based on the given sample rate.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * Returns zero for success, or a negative error code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) int dev_id, int rate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct hdac_bus *bus = codec->bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct drm_audio_component *acomp = bus->audio_component;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int port, pipe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (!acomp || !acomp->ops || !acomp->ops->sync_audio_rate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) port = nid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (acomp->audio_ops && acomp->audio_ops->pin2port) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) port = acomp->audio_ops->pin2port(codec, nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (port < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) pipe = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return acomp->ops->sync_audio_rate(acomp->dev, port, pipe, rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * snd_hdac_acomp_get_eld - Get the audio state and ELD via component
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * @codec: HDA codec
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * @nid: the pin widget NID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * @dev_id: device identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * @audio_enabled: the pointer to store the current audio state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * @buffer: the buffer pointer to store ELD bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * @max_bytes: the max bytes to be stored on @buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * This function is supposed to be used only by a HD-audio controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * driver that needs the interaction with graphics driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * This function queries the current state of the audio on the given
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * digital port and fetches the ELD bytes onto the given buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * It returns the number of bytes for the total ELD data, zero for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * invalid ELD, or a negative error code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * The return size is the total bytes required for the whole ELD bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * thus it may be over @max_bytes. If it's over @max_bytes, it implies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * that only a part of ELD bytes have been fetched.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) bool *audio_enabled, char *buffer, int max_bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct hdac_bus *bus = codec->bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct drm_audio_component *acomp = bus->audio_component;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) int port, pipe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (!acomp || !acomp->ops || !acomp->ops->get_eld)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) port = nid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (acomp->audio_ops && acomp->audio_ops->pin2port) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) port = acomp->audio_ops->pin2port(codec, nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (port < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) pipe = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return acomp->ops->get_eld(acomp->dev, port, pipe, audio_enabled,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) buffer, max_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static int hdac_component_master_bind(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct drm_audio_component *acomp = hdac_get_acomp(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (WARN_ON(!acomp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) ret = component_bind_all(dev, acomp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (WARN_ON(!(acomp->dev && acomp->ops))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) goto out_unbind;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /* pin the module to avoid dynamic unbinding, but only if given */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (!try_module_get(acomp->ops->owner)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) goto out_unbind;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (acomp->audio_ops && acomp->audio_ops->master_bind) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) ret = acomp->audio_ops->master_bind(dev, acomp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) goto module_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) complete_all(&acomp->master_bind_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) module_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) module_put(acomp->ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) out_unbind:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) component_unbind_all(dev, acomp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) complete_all(&acomp->master_bind_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static void hdac_component_master_unbind(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct drm_audio_component *acomp = hdac_get_acomp(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (acomp->audio_ops && acomp->audio_ops->master_unbind)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) acomp->audio_ops->master_unbind(dev, acomp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) module_put(acomp->ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) component_unbind_all(dev, acomp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) WARN_ON(acomp->ops || acomp->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static const struct component_master_ops hdac_component_master_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) .bind = hdac_component_master_bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) .unbind = hdac_component_master_unbind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) * snd_hdac_acomp_register_notifier - Register audio component ops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * @bus: HDA core bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * @aops: audio component ops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * This function is supposed to be used only by a HD-audio controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * driver that needs the interaction with graphics driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * This function sets the given ops to be called by the graphics driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * Returns zero for success or a negative error code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) int snd_hdac_acomp_register_notifier(struct hdac_bus *bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) const struct drm_audio_component_audio_ops *aops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (!bus->audio_component)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) bus->audio_component->audio_ops = aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) EXPORT_SYMBOL_GPL(snd_hdac_acomp_register_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * snd_hdac_acomp_init - Initialize audio component
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * @bus: HDA core bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * @aops: audio component ops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * @match_master: match function for finding components
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * @extra_size: Extra bytes to allocate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * This function is supposed to be used only by a HD-audio controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * driver that needs the interaction with graphics driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * This function initializes and sets up the audio component to communicate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * with graphics driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * Unlike snd_hdac_i915_init(), this function doesn't synchronize with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * binding with the DRM component. Each caller needs to sync via master_bind
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) * audio_ops.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * Returns zero for success or a negative error code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) int snd_hdac_acomp_init(struct hdac_bus *bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) const struct drm_audio_component_audio_ops *aops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) int (*match_master)(struct device *, int, void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) size_t extra_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct component_match *match = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct device *dev = bus->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct drm_audio_component *acomp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (WARN_ON(hdac_get_acomp(dev)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) acomp = devres_alloc(hdac_acomp_release, sizeof(*acomp) + extra_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (!acomp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) acomp->audio_ops = aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) init_completion(&acomp->master_bind_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) bus->audio_component = acomp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) devres_add(dev, acomp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) component_match_add_typed(dev, &match, match_master, bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) ret = component_master_add_with_match(dev, &hdac_component_master_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) bus->audio_component = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) devres_destroy(dev, hdac_acomp_release, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) dev_info(dev, "failed to add audio component master (%d)\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) EXPORT_SYMBOL_GPL(snd_hdac_acomp_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * snd_hdac_acomp_exit - Finalize audio component
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * @bus: HDA core bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * This function is supposed to be used only by a HD-audio controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) * driver that needs the interaction with graphics driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * This function releases the audio component that has been used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) * Returns zero for success or a negative error code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) int snd_hdac_acomp_exit(struct hdac_bus *bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) struct device *dev = bus->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct drm_audio_component *acomp = bus->audio_component;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) if (!acomp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) if (WARN_ON(bus->display_power_active) && acomp->ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) acomp->ops->put_power(acomp->dev, bus->display_power_active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) bus->display_power_active = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) bus->display_power_status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) component_master_del(dev, &hdac_component_master_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) bus->audio_component = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) devres_destroy(dev, hdac_acomp_release, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) EXPORT_SYMBOL_GPL(snd_hdac_acomp_exit);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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