#define __SOUND_HDAUDIO_H
#include <linux/device.h>
+#include <sound/hda_verbs.h>
+
+struct hdac_bus;
+struct hdac_device;
+struct hdac_driver;
/*
* exported bus type
struct hdac_device {
struct device dev;
int type;
+ struct hdac_bus *bus;
+ unsigned int addr; /* codec address */
+ struct list_head list; /* list point for bus codec_list */
};
/* device/driver type used for matching */
struct device_driver driver;
int type;
int (*match)(struct hdac_device *dev, struct hdac_driver *drv);
+ void (*unsol_event)(struct hdac_device *dev, unsigned int event);
};
#define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)
+/*
+ * HD-audio bus base driver
+ */
+struct hdac_bus_ops {
+ /* send a single command */
+ int (*command)(struct hdac_bus *bus, unsigned int cmd);
+ /* get a response from the last command */
+ int (*get_response)(struct hdac_bus *bus, unsigned int addr,
+ unsigned int *res);
+};
+
+#define HDA_UNSOL_QUEUE_SIZE 64
+
+struct hdac_bus {
+ struct device *dev;
+ const struct hdac_bus_ops *ops;
+
+ /* codec linked list */
+ struct list_head codec_list;
+ unsigned int num_codecs;
+
+ /* link caddr -> codec */
+ struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];
+
+ /* unsolicited event queue */
+ u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */
+ unsigned int unsol_rp, unsol_wp;
+ struct work_struct unsol_work;
+
+ /* bit flags of powered codecs */
+ unsigned long codec_powered;
+
+ /* flags */
+ bool sync_write:1; /* sync after verb write */
+
+ /* locks */
+ struct mutex cmd_mutex;
+};
+
+int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
+ const struct hdac_bus_ops *ops);
+void snd_hdac_bus_exit(struct hdac_bus *bus);
+int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
+ unsigned int cmd, unsigned int *res);
+int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
+ unsigned int cmd, unsigned int *res);
+void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);
+
+int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
+void snd_hdac_bus_remove_device(struct hdac_bus *bus,
+ struct hdac_device *codec);
+
#endif /* __SOUND_HDAUDIO_H */
--- /dev/null
+/*
+ * HD-audio core bus driver
+ */
+
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/export.h>
+#include <sound/hdaudio.h>
+
+static void process_unsol_events(struct work_struct *work);
+
+/**
+ * snd_hdac_bus_init - initialize a HD-audio bas bus
+ * @bus: the pointer to bus object
+ *
+ * Returns 0 if successful, or a negative error code.
+ */
+int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
+ const struct hdac_bus_ops *ops)
+{
+ memset(bus, 0, sizeof(*bus));
+ bus->dev = dev;
+ bus->ops = ops;
+ INIT_LIST_HEAD(&bus->codec_list);
+ INIT_WORK(&bus->unsol_work, process_unsol_events);
+ mutex_init(&bus->cmd_mutex);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_bus_init);
+
+/**
+ * snd_hdac_bus_exit - clean up a HD-audio bas bus
+ * @bus: the pointer to bus object
+ */
+void snd_hdac_bus_exit(struct hdac_bus *bus)
+{
+ WARN_ON(!list_empty(&bus->codec_list));
+ cancel_work_sync(&bus->unsol_work);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_bus_exit);
+
+/**
+ * snd_hdac_bus_exec_verb - execute a HD-audio verb on the given bus
+ * @bus: bus object
+ * @cmd: HD-audio encoded verb
+ * @res: pointer to store the response, NULL if performing asynchronously
+ *
+ * Returns 0 if successful, or a negative error code.
+ */
+int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
+ unsigned int cmd, unsigned int *res)
+{
+ int err;
+
+ mutex_lock(&bus->cmd_mutex);
+ err = snd_hdac_bus_exec_verb_unlocked(bus, addr, cmd, res);
+ mutex_unlock(&bus->cmd_mutex);
+ return err;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_bus_exec_verb);
+
+/**
+ * snd_hdac_bus_exec_verb_unlocked - unlocked version
+ * @bus: bus object
+ * @cmd: HD-audio encoded verb
+ * @res: pointer to store the response, NULL if performing asynchronously
+ *
+ * Returns 0 if successful, or a negative error code.
+ */
+int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
+ unsigned int cmd, unsigned int *res)
+{
+ unsigned int tmp;
+ int err;
+
+ if (cmd == ~0)
+ return -EINVAL;
+
+ if (res)
+ *res = -1;
+ else if (bus->sync_write)
+ res = &tmp;
+ for (;;) {
+ err = bus->ops->command(bus, cmd);
+ if (err != -EAGAIN)
+ break;
+ /* process pending verbs */
+ err = bus->ops->get_response(bus, addr, &tmp);
+ if (err)
+ break;
+ }
+ if (!err && res)
+ err = bus->ops->get_response(bus, addr, res);
+ return err;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_bus_exec_verb_unlocked);
+
+/**
+ * snd_hdac_bus_queue_event - add an unsolicited event to queue
+ * @bus: the BUS
+ * @res: unsolicited event (lower 32bit of RIRB entry)
+ * @res_ex: codec addr and flags (upper 32bit or RIRB entry)
+ *
+ * Adds the given event to the queue. The events are processed in
+ * the workqueue asynchronously. Call this function in the interrupt
+ * hanlder when RIRB receives an unsolicited event.
+ */
+void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex)
+{
+ unsigned int wp;
+
+ if (!bus)
+ return;
+
+ wp = (bus->unsol_wp + 1) % HDA_UNSOL_QUEUE_SIZE;
+ bus->unsol_wp = wp;
+
+ wp <<= 1;
+ bus->unsol_queue[wp] = res;
+ bus->unsol_queue[wp + 1] = res_ex;
+
+ schedule_work(&bus->unsol_work);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_bus_queue_event);
+
+/*
+ * process queued unsolicited events
+ */
+static void process_unsol_events(struct work_struct *work)
+{
+ struct hdac_bus *bus = container_of(work, struct hdac_bus, unsol_work);
+ struct hdac_device *codec;
+ struct hdac_driver *drv;
+ unsigned int rp, caddr, res;
+
+ while (bus->unsol_rp != bus->unsol_wp) {
+ rp = (bus->unsol_rp + 1) % HDA_UNSOL_QUEUE_SIZE;
+ bus->unsol_rp = rp;
+ rp <<= 1;
+ res = bus->unsol_queue[rp];
+ caddr = bus->unsol_queue[rp + 1];
+ if (!(caddr & (1 << 4))) /* no unsolicited event? */
+ continue;
+ codec = bus->caddr_tbl[caddr & 0x0f];
+ if (!codec || !codec->dev.driver)
+ continue;
+ drv = drv_to_hdac_driver(codec->dev.driver);
+ if (drv->unsol_event)
+ drv->unsol_event(codec, res);
+ }
+}
+
+int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec)
+{
+ if (bus->caddr_tbl[codec->addr]) {
+ dev_err(bus->dev, "address 0x%x is already occupied\n",
+ codec->addr);
+ return -EBUSY;
+ }
+
+ list_add_tail(&codec->list, &bus->codec_list);
+ bus->caddr_tbl[codec->addr] = codec;
+ set_bit(codec->addr, &bus->codec_powered);
+ bus->num_codecs++;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_bus_add_device);
+
+void snd_hdac_bus_remove_device(struct hdac_bus *bus,
+ struct hdac_device *codec)
+{
+ WARN_ON(bus != codec->bus);
+ if (list_empty(&codec->list))
+ return;
+ list_del_init(&codec->list);
+ bus->caddr_tbl[codec->addr] = NULL;
+ clear_bit(codec->addr, &bus->codec_powered);
+ bus->num_codecs--;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_bus_remove_device);
#include "hda_jack.h"
#include <sound/hda_hwdep.h>
-#define CREATE_TRACE_POINTS
-#include "hda_trace.h"
-
#ifdef CONFIG_PM
#define codec_in_pm(codec) atomic_read(&(codec)->in_pm)
#define hda_codec_is_power_on(codec) \
make_codec_cmd(struct hda_codec *codec, hda_nid_t nid, int flags,
unsigned int verb, unsigned int parm)
{
+ unsigned int addr = codec->core.addr;
u32 val;
- if ((codec->addr & ~0xf) || (nid & ~0x7f) ||
+ if ((addr & ~0xf) || (nid & ~0x7f) ||
(verb & ~0xfff) || (parm & ~0xffff)) {
codec_err(codec, "hda-codec: out of range cmd %x:%x:%x:%x\n",
- codec->addr, nid, verb, parm);
+ addr, nid, verb, parm);
return ~0;
}
- val = (u32)codec->addr << 28;
+ val = (u32)addr << 28;
val |= (u32)nid << 20;
val |= verb << 8;
val |= parm;
if (cmd == ~0)
return -1;
- if (res)
- *res = -1;
again:
snd_hda_power_up(codec);
- mutex_lock(&bus->cmd_mutex);
+ mutex_lock(&bus->core.cmd_mutex);
if (flags & HDA_RW_NO_RESPONSE_FALLBACK)
bus->no_response_fallback = 1;
- for (;;) {
- trace_hda_send_cmd(codec, cmd);
- err = bus->ops.command(bus, cmd);
- if (err != -EAGAIN)
- break;
- /* process pending verbs */
- bus->ops.get_response(bus, codec->addr);
- }
- if (!err && res) {
- *res = bus->ops.get_response(bus, codec->addr);
- trace_hda_get_response(codec, *res);
- }
+ err = snd_hdac_bus_exec_verb_unlocked(&bus->core, codec->core.addr,
+ cmd, res);
bus->no_response_fallback = 0;
- mutex_unlock(&bus->cmd_mutex);
+ mutex_unlock(&bus->core.cmd_mutex);
snd_hda_power_down(codec);
- if (!codec_in_pm(codec) && res && *res == -1 && bus->rirb_error) {
+ if (!codec_in_pm(codec) && res && err < 0 && bus->rirb_error) {
if (bus->response_reset) {
codec_dbg(codec,
"resetting BUS due to fatal communication error\n");
- trace_hda_bus_reset(bus);
bus->ops.bus_reset(bus);
}
goto again;
unsigned int verb, unsigned int parm)
{
unsigned int cmd = make_codec_cmd(codec, nid, flags, verb, parm);
- unsigned int res;
- return codec_exec_verb(codec, cmd, flags,
- codec->bus->sync_write ? &res : NULL);
+ return codec_exec_verb(codec, cmd, flags, NULL);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_write);
return devices;
}
-/**
- * snd_hda_queue_unsol_event - add an unsolicited event to queue
- * @bus: the BUS
- * @res: unsolicited event (lower 32bit of RIRB entry)
- * @res_ex: codec addr and flags (upper 32bit or RIRB entry)
- *
- * Adds the given event to the queue. The events are processed in
- * the workqueue asynchronously. Call this function in the interrupt
- * hanlder when RIRB receives an unsolicited event.
- *
- * Returns 0 if successful, or a negative error code.
- */
-int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex)
-{
- struct hda_bus_unsolicited *unsol;
- unsigned int wp;
-
- if (!bus)
- return 0;
-
- trace_hda_unsol_event(bus, res, res_ex);
- unsol = &bus->unsol;
- wp = (unsol->wp + 1) % HDA_UNSOL_QUEUE_SIZE;
- unsol->wp = wp;
-
- wp <<= 1;
- unsol->queue[wp] = res;
- unsol->queue[wp + 1] = res_ex;
-
- schedule_work(&unsol->work);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_hda_queue_unsol_event);
-
-/*
- * process queued unsolicited events
- */
-static void process_unsol_events(struct work_struct *work)
-{
- struct hda_bus *bus = container_of(work, struct hda_bus, unsol.work);
- struct hda_bus_unsolicited *unsol = &bus->unsol;
- struct hda_codec *codec;
- unsigned int rp, caddr, res;
-
- while (unsol->rp != unsol->wp) {
- rp = (unsol->rp + 1) % HDA_UNSOL_QUEUE_SIZE;
- unsol->rp = rp;
- rp <<= 1;
- res = unsol->queue[rp];
- caddr = unsol->queue[rp + 1];
- if (!(caddr & (1 << 4))) /* no unsolicited event? */
- continue;
- codec = bus->caddr_tbl[caddr & 0x0f];
- if (codec && codec->patch_ops.unsol_event)
- codec->patch_ops.unsol_event(codec, res);
- }
-}
-
/*
* destructor
*/
{
if (!bus)
return;
-
- WARN_ON(!list_empty(&bus->codec_list));
- cancel_work_sync(&bus->unsol.work);
if (bus->ops.private_free)
bus->ops.private_free(bus);
+ snd_hdac_bus_exit(&bus->core);
kfree(bus);
}
return 0;
}
+/* hdac_bus_ops translations */
+static int _hda_bus_command(struct hdac_bus *_bus, unsigned int cmd)
+{
+ struct hda_bus *bus = container_of(_bus, struct hda_bus, core);
+ return bus->ops.command(bus, cmd);
+}
+
+static int _hda_bus_get_response(struct hdac_bus *_bus, unsigned int addr,
+ unsigned int *res)
+{
+ struct hda_bus *bus = container_of(_bus, struct hda_bus, core);
+ *res = bus->ops.get_response(bus, addr);
+ return bus->rirb_error ? -EIO : 0;
+}
+
+static const struct hdac_bus_ops bus_ops = {
+ .command = _hda_bus_command,
+ .get_response = _hda_bus_get_response,
+};
+
/**
* snd_hda_bus_new - create a HDA bus
* @card: the card entry
if (!bus)
return -ENOMEM;
+ err = snd_hdac_bus_init(&bus->core, card->dev, &bus_ops);
+ if (err < 0) {
+ kfree(bus);
+ return err;
+ }
+
bus->card = card;
- mutex_init(&bus->cmd_mutex);
mutex_init(&bus->prepare_mutex);
- INIT_LIST_HEAD(&bus->codec_list);
- INIT_WORK(&bus->unsol.work, process_unsol_events);
err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops);
if (err < 0) {
struct hda_codec *codec = dev_to_hda_codec(dev);
free_init_pincfgs(codec);
- list_del(&codec->list);
- codec->bus->caddr_tbl[codec->addr] = NULL;
- clear_bit(codec->addr, &codec->bus->codec_powered);
+ snd_hdac_bus_remove_device(&codec->bus->core, &codec->core);
snd_hda_sysfs_clear(codec);
free_hda_cache(&codec->amp_cache);
free_hda_cache(&codec->cmd_cache);
kfree(codec->chip_name);
kfree(codec->modelname);
kfree(codec->wcaps);
- codec->bus->num_codecs--;
kfree(codec);
}
if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
return -EINVAL;
- if (bus->caddr_tbl[codec_addr]) {
- dev_err(card->dev,
- "address 0x%x is already occupied\n",
- codec_addr);
- return -EBUSY;
- }
-
codec = kzalloc(sizeof(*codec), GFP_KERNEL);
if (!codec)
return -ENOMEM;
+ codec->core.bus = &bus->core;
+ codec->core.addr = codec_addr;
+ codec->core.type = HDA_DEV_LEGACY;
+
dev = hda_codec_dev(codec);
device_initialize(dev);
- dev->parent = card->dev;
+ dev->parent = bus->core.dev;
dev->bus = &snd_hda_bus_type;
dev->release = snd_hda_codec_dev_release;
dev->groups = snd_hda_dev_attr_groups;
dev_set_name(dev, "hdaudioC%dD%d", card->number, codec_addr);
dev_set_drvdata(dev, codec); /* for sysfs */
device_enable_async_suspend(dev);
- codec->core.type = HDA_DEV_LEGACY;
codec->bus = bus;
codec->card = card;
/* snd_hda_codec_new() marks the codec as power-up, and leave it as is.
* it's powered down later in snd_hda_codec_dev_register().
*/
- set_bit(codec->addr, &bus->codec_powered);
+ set_bit(codec->core.addr, &bus->core.codec_powered);
pm_runtime_set_active(hda_codec_dev(codec));
pm_runtime_get_noresume(hda_codec_dev(codec));
codec->power_jiffies = jiffies;
}
}
- list_add_tail(&codec->list, &bus->codec_list);
- bus->num_codecs++;
-
- bus->caddr_tbl[codec_addr] = codec;
+ err = snd_hdac_bus_add_device(&bus->core, &codec->core);
+ if (err < 0)
+ goto error;
codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT,
AC_PAR_VENDOR_ID);
/* make other inactive cvts with the same stream-tag dirty */
type = get_wcaps_type(get_wcaps(codec, nid));
- list_for_each_entry(c, &codec->bus->codec_list, list) {
+ list_for_each_codec(c, codec->bus) {
for (i = 0; i < c->cvt_setups.used; i++) {
p = snd_array_elem(&c->cvt_setups, i);
if (!p->active && p->stream_tag == stream_tag &&
struct hda_codec *c;
int i;
- list_for_each_entry(c, &codec->bus->codec_list, list) {
+ list_for_each_codec(c, codec->bus) {
for (i = 0; i < c->cvt_setups.used; i++) {
struct hda_cvt_setup *p;
p = snd_array_elem(&c->cvt_setups, i);
if (!list_empty(&card->ctl_files))
goto err_clear;
- list_for_each_entry(codec, &bus->codec_list, list) {
+ list_for_each_codec(codec, bus) {
struct hda_pcm *cpcm;
list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
if (!cpcm->pcm)
verb = verb | (parm >> 8);
parm &= 0xff;
key = build_cmd_cache_key(nid, verb);
- mutex_lock(&codec->bus->cmd_mutex);
+ mutex_lock(&codec->bus->core.cmd_mutex);
c = get_alloc_hash(&codec->cmd_cache, key);
if (c) {
c->val = parm;
c->dirty = cache_only;
}
- mutex_unlock(&codec->bus->cmd_mutex);
+ mutex_unlock(&codec->bus->core.cmd_mutex);
return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_write_cache);
verb = verb | (parm >> 8);
parm &= 0xff;
key = build_cmd_cache_key(nid, verb);
- mutex_lock(&codec->bus->cmd_mutex);
+ mutex_lock(&codec->bus->core.cmd_mutex);
c = get_hash(&codec->cmd_cache, key);
if (c && c->val == parm) {
- mutex_unlock(&codec->bus->cmd_mutex);
+ mutex_unlock(&codec->bus->core.cmd_mutex);
return 0;
}
- mutex_unlock(&codec->bus->cmd_mutex);
+ mutex_unlock(&codec->bus->core.cmd_mutex);
return snd_hda_codec_write_cache(codec, nid, flags, verb, parm);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_update_cache);
codec->patch_ops.suspend(codec);
hda_cleanup_all_streams(codec);
state = hda_set_power_state(codec, AC_PWRST_D3);
- trace_hda_power_down(codec);
update_power_acct(codec, true);
atomic_dec(&codec->in_pm);
return state;
{
atomic_inc(&codec->in_pm);
- trace_hda_power_up(codec);
hda_mark_cmd_cache_dirty(codec);
codec->power_jiffies = jiffies;
snd_pcm_suspend_all(pcm->pcm);
state = hda_call_codec_suspend(codec);
if (codec->d3_stop_clk && codec->epss && (state & AC_PWRST_CLK_STOP_OK))
- clear_bit(codec->addr, &codec->bus->codec_powered);
+ clear_bit(codec->core.addr, &codec->bus->core.codec_powered);
return 0;
}
{
struct hda_codec *codec = dev_to_hda_codec(dev);
- set_bit(codec->addr, &codec->bus->codec_powered);
+ set_bit(codec->core.addr, &codec->bus->core.codec_powered);
hda_call_codec_resume(codec);
pm_runtime_mark_last_busy(dev);
return 0;
err = codec->patch_ops.build_pcms(codec);
if (err < 0) {
codec_err(codec, "cannot build PCMs for #%d (error %d)\n",
- codec->addr, err);
+ codec->core.addr, err);
return err;
}
if (err < 0) {
codec_err(codec,
"cannot attach PCM stream %d for codec #%d\n",
- dev, codec->addr);
+ dev, codec->core.addr);
continue; /* no fatal error */
}
}
* the codec addr; if it still fails (or it's the
* primary codec), then try another control index
*/
- if (!addr && codec->addr)
- addr = codec->addr;
+ if (!addr && codec->core.addr)
+ addr = codec->core.addr;
else if (!idx && !knew->index) {
idx = find_empty_mixer_ctl_idx(codec,
knew->name, 0);
{
struct hda_codec *c;
- list_for_each_entry(c, &bus->codec_list, list)
+ list_for_each_codec(c, bus)
codec_set_power_save(c, delay);
}
EXPORT_SYMBOL_GPL(snd_hda_set_power_save);
{
struct hda_codec *codec;
- list_for_each_entry(codec, &bus->codec_list, list) {
+ list_for_each_codec(codec, bus) {
/* FIXME: maybe a better way needed for forced reset */
cancel_delayed_work_sync(&codec->jackpoll_work);
#ifdef CONFIG_PM
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff