| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * HD-audio codec core device |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/device.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/export.h> |
| #include <linux/pm_runtime.h> |
| #include <sound/hdaudio.h> |
| #include <sound/hda_regmap.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include "local.h" |
| |
| static void setup_fg_nodes(struct hdac_device *codec); |
| static int get_codec_vendor_name(struct hdac_device *codec); |
| |
| static void default_release(struct device *dev) |
| { |
| snd_hdac_device_exit(dev_to_hdac_dev(dev)); |
| } |
| |
| /** |
| * snd_hdac_device_init - initialize the HD-audio codec base device |
| * @codec: device to initialize |
| * @bus: but to attach |
| * @name: device name string |
| * @addr: codec address |
| * |
| * Returns zero for success or a negative error code. |
| * |
| * This function increments the runtime PM counter and marks it active. |
| * The caller needs to turn it off appropriately later. |
| * |
| * The caller needs to set the device's release op properly by itself. |
| */ |
| int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus, |
| const char *name, unsigned int addr) |
| { |
| struct device *dev; |
| hda_nid_t fg; |
| int err; |
| |
| dev = &codec->dev; |
| device_initialize(dev); |
| dev->parent = bus->dev; |
| dev->bus = &snd_hda_bus_type; |
| dev->release = default_release; |
| dev->groups = hdac_dev_attr_groups; |
| dev_set_name(dev, "%s", name); |
| device_enable_async_suspend(dev); |
| |
| codec->bus = bus; |
| codec->addr = addr; |
| codec->type = HDA_DEV_CORE; |
| mutex_init(&codec->widget_lock); |
| mutex_init(&codec->regmap_lock); |
| pm_runtime_set_active(&codec->dev); |
| pm_runtime_get_noresume(&codec->dev); |
| atomic_set(&codec->in_pm, 0); |
| |
| err = snd_hdac_bus_add_device(bus, codec); |
| if (err < 0) |
| goto error; |
| |
| /* fill parameters */ |
| codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, |
| AC_PAR_VENDOR_ID); |
| if (codec->vendor_id == -1) { |
| /* read again, hopefully the access method was corrected |
| * in the last read... |
| */ |
| codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, |
| AC_PAR_VENDOR_ID); |
| } |
| |
| codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, |
| AC_PAR_SUBSYSTEM_ID); |
| codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, |
| AC_PAR_REV_ID); |
| |
| setup_fg_nodes(codec); |
| if (!codec->afg && !codec->mfg) { |
| dev_err(dev, "no AFG or MFG node found\n"); |
| err = -ENODEV; |
| goto error; |
| } |
| |
| fg = codec->afg ? codec->afg : codec->mfg; |
| |
| err = snd_hdac_refresh_widgets(codec); |
| if (err < 0) |
| goto error; |
| |
| codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE); |
| /* reread ssid if not set by parameter */ |
| if (codec->subsystem_id == -1 || codec->subsystem_id == 0) |
| snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0, |
| &codec->subsystem_id); |
| |
| err = get_codec_vendor_name(codec); |
| if (err < 0) |
| goto error; |
| |
| codec->chip_name = kasprintf(GFP_KERNEL, "ID %x", |
| codec->vendor_id & 0xffff); |
| if (!codec->chip_name) { |
| err = -ENOMEM; |
| goto error; |
| } |
| |
| return 0; |
| |
| error: |
| put_device(&codec->dev); |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_device_init); |
| |
| /** |
| * snd_hdac_device_exit - clean up the HD-audio codec base device |
| * @codec: device to clean up |
| */ |
| void snd_hdac_device_exit(struct hdac_device *codec) |
| { |
| pm_runtime_put_noidle(&codec->dev); |
| /* keep balance of runtime PM child_count in parent device */ |
| pm_runtime_set_suspended(&codec->dev); |
| snd_hdac_bus_remove_device(codec->bus, codec); |
| kfree(codec->vendor_name); |
| kfree(codec->chip_name); |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_device_exit); |
| |
| /** |
| * snd_hdac_device_register - register the hd-audio codec base device |
| * @codec: the device to register |
| */ |
| int snd_hdac_device_register(struct hdac_device *codec) |
| { |
| int err; |
| |
| err = device_add(&codec->dev); |
| if (err < 0) |
| return err; |
| mutex_lock(&codec->widget_lock); |
| err = hda_widget_sysfs_init(codec); |
| mutex_unlock(&codec->widget_lock); |
| if (err < 0) { |
| device_del(&codec->dev); |
| return err; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_device_register); |
| |
| /** |
| * snd_hdac_device_unregister - unregister the hd-audio codec base device |
| * @codec: the device to unregister |
| */ |
| void snd_hdac_device_unregister(struct hdac_device *codec) |
| { |
| if (device_is_registered(&codec->dev)) { |
| mutex_lock(&codec->widget_lock); |
| hda_widget_sysfs_exit(codec); |
| mutex_unlock(&codec->widget_lock); |
| device_del(&codec->dev); |
| snd_hdac_bus_remove_device(codec->bus, codec); |
| } |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_device_unregister); |
| |
| /** |
| * snd_hdac_device_set_chip_name - set/update the codec name |
| * @codec: the HDAC device |
| * @name: name string to set |
| * |
| * Returns 0 if the name is set or updated, or a negative error code. |
| */ |
| int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name) |
| { |
| char *newname; |
| |
| if (!name) |
| return 0; |
| newname = kstrdup(name, GFP_KERNEL); |
| if (!newname) |
| return -ENOMEM; |
| kfree(codec->chip_name); |
| codec->chip_name = newname; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name); |
| |
| /** |
| * snd_hdac_codec_modalias - give the module alias name |
| * @codec: HDAC device |
| * @buf: string buffer to store |
| * @size: string buffer size |
| * |
| * Returns the size of string, like snprintf(), or a negative error code. |
| */ |
| int snd_hdac_codec_modalias(const struct hdac_device *codec, char *buf, size_t size) |
| { |
| return scnprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n", |
| codec->vendor_id, codec->revision_id, codec->type); |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias); |
| |
| /** |
| * snd_hdac_make_cmd - compose a 32bit command word to be sent to the |
| * HD-audio controller |
| * @codec: the codec object |
| * @nid: NID to encode |
| * @verb: verb to encode |
| * @parm: parameter to encode |
| * |
| * Return an encoded command verb or -1 for error. |
| */ |
| static unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid, |
| unsigned int verb, unsigned int parm) |
| { |
| u32 val, addr; |
| |
| addr = codec->addr; |
| if ((addr & ~0xf) || (nid & ~0x7f) || |
| (verb & ~0xfff) || (parm & ~0xffff)) { |
| dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n", |
| addr, nid, verb, parm); |
| return -1; |
| } |
| |
| val = addr << 28; |
| val |= (u32)nid << 20; |
| val |= verb << 8; |
| val |= parm; |
| return val; |
| } |
| |
| /** |
| * snd_hdac_exec_verb - execute an encoded verb |
| * @codec: the codec object |
| * @cmd: encoded verb to execute |
| * @flags: optional flags, pass zero for default |
| * @res: the pointer to store the result, NULL if running async |
| * |
| * Returns zero if successful, or a negative error code. |
| * |
| * This calls the exec_verb op when set in hdac_codec. If not, |
| * call the default snd_hdac_bus_exec_verb(). |
| */ |
| int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, |
| unsigned int flags, unsigned int *res) |
| { |
| if (codec->exec_verb) |
| return codec->exec_verb(codec, cmd, flags, res); |
| return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res); |
| } |
| |
| |
| /** |
| * snd_hdac_read - execute a verb |
| * @codec: the codec object |
| * @nid: NID to execute a verb |
| * @verb: verb to execute |
| * @parm: parameter for a verb |
| * @res: the pointer to store the result, NULL if running async |
| * |
| * Returns zero if successful, or a negative error code. |
| */ |
| int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, |
| unsigned int verb, unsigned int parm, unsigned int *res) |
| { |
| unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm); |
| |
| return snd_hdac_exec_verb(codec, cmd, 0, res); |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_read); |
| |
| /** |
| * _snd_hdac_read_parm - read a parmeter |
| * @codec: the codec object |
| * @nid: NID to read a parameter |
| * @parm: parameter to read |
| * @res: pointer to store the read value |
| * |
| * This function returns zero or an error unlike snd_hdac_read_parm(). |
| */ |
| int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, |
| unsigned int *res) |
| { |
| unsigned int cmd; |
| |
| cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; |
| return snd_hdac_regmap_read_raw(codec, cmd, res); |
| } |
| EXPORT_SYMBOL_GPL(_snd_hdac_read_parm); |
| |
| /** |
| * snd_hdac_read_parm_uncached - read a codec parameter without caching |
| * @codec: the codec object |
| * @nid: NID to read a parameter |
| * @parm: parameter to read |
| * |
| * Returns -1 for error. If you need to distinguish the error more |
| * strictly, use snd_hdac_read() directly. |
| */ |
| int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, |
| int parm) |
| { |
| unsigned int cmd, val; |
| |
| cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; |
| if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0) |
| return -1; |
| return val; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached); |
| |
| /** |
| * snd_hdac_override_parm - override read-only parameters |
| * @codec: the codec object |
| * @nid: NID for the parameter |
| * @parm: the parameter to change |
| * @val: the parameter value to overwrite |
| */ |
| int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, |
| unsigned int parm, unsigned int val) |
| { |
| unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm; |
| int err; |
| |
| if (!codec->regmap) |
| return -EINVAL; |
| |
| codec->caps_overwriting = true; |
| err = snd_hdac_regmap_write_raw(codec, verb, val); |
| codec->caps_overwriting = false; |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_override_parm); |
| |
| /** |
| * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes |
| * @codec: the codec object |
| * @nid: NID to inspect |
| * @start_id: the pointer to store the starting NID |
| * |
| * Returns the number of subtree nodes or zero if not found. |
| * This function reads parameters always without caching. |
| */ |
| int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, |
| hda_nid_t *start_id) |
| { |
| unsigned int parm; |
| |
| parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT); |
| if (parm == -1) { |
| *start_id = 0; |
| return 0; |
| } |
| *start_id = (parm >> 16) & 0x7fff; |
| return (int)(parm & 0x7fff); |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes); |
| |
| /* |
| * look for an AFG and MFG nodes |
| */ |
| static void setup_fg_nodes(struct hdac_device *codec) |
| { |
| int i, total_nodes, function_id; |
| hda_nid_t nid; |
| |
| total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid); |
| for (i = 0; i < total_nodes; i++, nid++) { |
| function_id = snd_hdac_read_parm(codec, nid, |
| AC_PAR_FUNCTION_TYPE); |
| switch (function_id & 0xff) { |
| case AC_GRP_AUDIO_FUNCTION: |
| codec->afg = nid; |
| codec->afg_function_id = function_id & 0xff; |
| codec->afg_unsol = (function_id >> 8) & 1; |
| break; |
| case AC_GRP_MODEM_FUNCTION: |
| codec->mfg = nid; |
| codec->mfg_function_id = function_id & 0xff; |
| codec->mfg_unsol = (function_id >> 8) & 1; |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| /** |
| * snd_hdac_refresh_widgets - Reset the widget start/end nodes |
| * @codec: the codec object |
| */ |
| int snd_hdac_refresh_widgets(struct hdac_device *codec) |
| { |
| hda_nid_t start_nid; |
| int nums, err = 0; |
| |
| /* |
| * Serialize against multiple threads trying to update the sysfs |
| * widgets array. |
| */ |
| mutex_lock(&codec->widget_lock); |
| nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid); |
| if (!start_nid || nums <= 0 || nums >= 0xff) { |
| dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n", |
| codec->afg); |
| err = -EINVAL; |
| goto unlock; |
| } |
| |
| err = hda_widget_sysfs_reinit(codec, start_nid, nums); |
| if (err < 0) |
| goto unlock; |
| |
| codec->num_nodes = nums; |
| codec->start_nid = start_nid; |
| codec->end_nid = start_nid + nums; |
| unlock: |
| mutex_unlock(&codec->widget_lock); |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); |
| |
| /* return CONNLIST_LEN parameter of the given widget */ |
| static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) |
| { |
| unsigned int wcaps = get_wcaps(codec, nid); |
| unsigned int parm; |
| |
| if (!(wcaps & AC_WCAP_CONN_LIST) && |
| get_wcaps_type(wcaps) != AC_WID_VOL_KNB) |
| return 0; |
| |
| parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); |
| if (parm == -1) |
| parm = 0; |
| return parm; |
| } |
| |
| /** |
| * snd_hdac_get_connections - get a widget connection list |
| * @codec: the codec object |
| * @nid: NID |
| * @conn_list: the array to store the results, can be NULL |
| * @max_conns: the max size of the given array |
| * |
| * Returns the number of connected widgets, zero for no connection, or a |
| * negative error code. When the number of elements don't fit with the |
| * given array size, it returns -ENOSPC. |
| * |
| * When @conn_list is NULL, it just checks the number of connections. |
| */ |
| int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, |
| hda_nid_t *conn_list, int max_conns) |
| { |
| unsigned int parm; |
| int i, conn_len, conns, err; |
| unsigned int shift, num_elems, mask; |
| hda_nid_t prev_nid; |
| int null_count = 0; |
| |
| parm = get_num_conns(codec, nid); |
| if (!parm) |
| return 0; |
| |
| if (parm & AC_CLIST_LONG) { |
| /* long form */ |
| shift = 16; |
| num_elems = 2; |
| } else { |
| /* short form */ |
| shift = 8; |
| num_elems = 4; |
| } |
| conn_len = parm & AC_CLIST_LENGTH; |
| mask = (1 << (shift-1)) - 1; |
| |
| if (!conn_len) |
| return 0; /* no connection */ |
| |
| if (conn_len == 1) { |
| /* single connection */ |
| err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, |
| &parm); |
| if (err < 0) |
| return err; |
| if (conn_list) |
| conn_list[0] = parm & mask; |
| return 1; |
| } |
| |
| /* multi connection */ |
| conns = 0; |
| prev_nid = 0; |
| for (i = 0; i < conn_len; i++) { |
| int range_val; |
| hda_nid_t val, n; |
| |
| if (i % num_elems == 0) { |
| err = snd_hdac_read(codec, nid, |
| AC_VERB_GET_CONNECT_LIST, i, |
| &parm); |
| if (err < 0) |
| return -EIO; |
| } |
| range_val = !!(parm & (1 << (shift-1))); /* ranges */ |
| val = parm & mask; |
| if (val == 0 && null_count++) { /* no second chance */ |
| dev_dbg(&codec->dev, |
| "invalid CONNECT_LIST verb %x[%i]:%x\n", |
| nid, i, parm); |
| return 0; |
| } |
| parm >>= shift; |
| if (range_val) { |
| /* ranges between the previous and this one */ |
| if (!prev_nid || prev_nid >= val) { |
| dev_warn(&codec->dev, |
| "invalid dep_range_val %x:%x\n", |
| prev_nid, val); |
| continue; |
| } |
| for (n = prev_nid + 1; n <= val; n++) { |
| if (conn_list) { |
| if (conns >= max_conns) |
| return -ENOSPC; |
| conn_list[conns] = n; |
| } |
| conns++; |
| } |
| } else { |
| if (conn_list) { |
| if (conns >= max_conns) |
| return -ENOSPC; |
| conn_list[conns] = val; |
| } |
| conns++; |
| } |
| prev_nid = val; |
| } |
| return conns; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_get_connections); |
| |
| #ifdef CONFIG_PM |
| /** |
| * snd_hdac_power_up - power up the codec |
| * @codec: the codec object |
| * |
| * This function calls the runtime PM helper to power up the given codec. |
| * Unlike snd_hdac_power_up_pm(), you should call this only for the code |
| * path that isn't included in PM path. Otherwise it gets stuck. |
| * |
| * Returns zero if successful, or a negative error code. |
| */ |
| int snd_hdac_power_up(struct hdac_device *codec) |
| { |
| return pm_runtime_get_sync(&codec->dev); |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_power_up); |
| |
| /** |
| * snd_hdac_power_down - power down the codec |
| * @codec: the codec object |
| * |
| * Returns zero if successful, or a negative error code. |
| */ |
| int snd_hdac_power_down(struct hdac_device *codec) |
| { |
| struct device *dev = &codec->dev; |
| |
| pm_runtime_mark_last_busy(dev); |
| return pm_runtime_put_autosuspend(dev); |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_power_down); |
| |
| /** |
| * snd_hdac_power_up_pm - power up the codec |
| * @codec: the codec object |
| * |
| * This function can be called in a recursive code path like init code |
| * which may be called by PM suspend/resume again. OTOH, if a power-up |
| * call must wake up the sleeper (e.g. in a kctl callback), use |
| * snd_hdac_power_up() instead. |
| * |
| * Returns zero if successful, or a negative error code. |
| */ |
| int snd_hdac_power_up_pm(struct hdac_device *codec) |
| { |
| if (!atomic_inc_not_zero(&codec->in_pm)) |
| return snd_hdac_power_up(codec); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); |
| |
| /* like snd_hdac_power_up_pm(), but only increment the pm count when |
| * already powered up. Returns -1 if not powered up, 1 if incremented |
| * or 0 if unchanged. Only used in hdac_regmap.c |
| */ |
| int snd_hdac_keep_power_up(struct hdac_device *codec) |
| { |
| if (!atomic_inc_not_zero(&codec->in_pm)) { |
| int ret = pm_runtime_get_if_active(&codec->dev); |
| if (!ret) |
| return -1; |
| if (ret < 0) |
| return 0; |
| } |
| return 1; |
| } |
| |
| /** |
| * snd_hdac_power_down_pm - power down the codec |
| * @codec: the codec object |
| * |
| * Like snd_hdac_power_up_pm(), this function is used in a recursive |
| * code path like init code which may be called by PM suspend/resume again. |
| * |
| * Returns zero if successful, or a negative error code. |
| */ |
| int snd_hdac_power_down_pm(struct hdac_device *codec) |
| { |
| if (atomic_dec_if_positive(&codec->in_pm) < 0) |
| return snd_hdac_power_down(codec); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); |
| #endif |
| |
| /* codec vendor labels */ |
| struct hda_vendor_id { |
| unsigned int id; |
| const char *name; |
| }; |
| |
| static const struct hda_vendor_id hda_vendor_ids[] = { |
| { 0x0014, "Loongson" }, |
| { 0x1002, "ATI" }, |
| { 0x1013, "Cirrus Logic" }, |
| { 0x1057, "Motorola" }, |
| { 0x1095, "Silicon Image" }, |
| { 0x10de, "Nvidia" }, |
| { 0x10ec, "Realtek" }, |
| { 0x1102, "Creative" }, |
| { 0x1106, "VIA" }, |
| { 0x111d, "IDT" }, |
| { 0x11c1, "LSI" }, |
| { 0x11d4, "Analog Devices" }, |
| { 0x13f6, "C-Media" }, |
| { 0x14f1, "Conexant" }, |
| { 0x17e8, "Chrontel" }, |
| { 0x1854, "LG" }, |
| { 0x19e5, "Huawei" }, |
| { 0x1aec, "Wolfson Microelectronics" }, |
| { 0x1af4, "QEMU" }, |
| { 0x1fa8, "Senarytech" }, |
| { 0x434d, "C-Media" }, |
| { 0x8086, "Intel" }, |
| { 0x8384, "SigmaTel" }, |
| {} /* terminator */ |
| }; |
| |
| /* store the codec vendor name */ |
| static int get_codec_vendor_name(struct hdac_device *codec) |
| { |
| const struct hda_vendor_id *c; |
| u16 vendor_id = codec->vendor_id >> 16; |
| |
| for (c = hda_vendor_ids; c->id; c++) { |
| if (c->id == vendor_id) { |
| codec->vendor_name = kstrdup(c->name, GFP_KERNEL); |
| return codec->vendor_name ? 0 : -ENOMEM; |
| } |
| } |
| |
| codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); |
| return codec->vendor_name ? 0 : -ENOMEM; |
| } |
| |
| /* |
| * stream formats |
| */ |
| struct hda_rate_tbl { |
| unsigned int hz; |
| unsigned int alsa_bits; |
| unsigned int hda_fmt; |
| }; |
| |
| /* rate = base * mult / div */ |
| #define HDA_RATE(base, mult, div) \ |
| (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ |
| (((div) - 1) << AC_FMT_DIV_SHIFT)) |
| |
| static const struct hda_rate_tbl rate_bits[] = { |
| /* rate in Hz, ALSA rate bitmask, HDA format value */ |
| |
| /* autodetected value used in snd_hda_query_supported_pcm */ |
| { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, |
| { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, |
| { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, |
| { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, |
| { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, |
| { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, |
| { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, |
| { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, |
| { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, |
| { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, |
| { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, |
| #define AC_PAR_PCM_RATE_BITS 11 |
| /* up to bits 10, 384kHZ isn't supported properly */ |
| |
| /* not autodetected value */ |
| { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, |
| |
| { 0 } /* terminator */ |
| }; |
| |
| static snd_pcm_format_t snd_hdac_format_normalize(snd_pcm_format_t format) |
| { |
| switch (format) { |
| case SNDRV_PCM_FORMAT_S20_LE: |
| case SNDRV_PCM_FORMAT_S24_LE: |
| return SNDRV_PCM_FORMAT_S32_LE; |
| |
| case SNDRV_PCM_FORMAT_U20_LE: |
| case SNDRV_PCM_FORMAT_U24_LE: |
| return SNDRV_PCM_FORMAT_U32_LE; |
| |
| case SNDRV_PCM_FORMAT_S20_BE: |
| case SNDRV_PCM_FORMAT_S24_BE: |
| return SNDRV_PCM_FORMAT_S32_BE; |
| |
| case SNDRV_PCM_FORMAT_U20_BE: |
| case SNDRV_PCM_FORMAT_U24_BE: |
| return SNDRV_PCM_FORMAT_U32_BE; |
| |
| default: |
| return format; |
| } |
| } |
| |
| /** |
| * snd_hdac_stream_format_bits - obtain bits per sample value. |
| * @format: the PCM format. |
| * @subformat: the PCM subformat. |
| * @maxbits: the maximum bits per sample. |
| * |
| * Return: The number of bits per sample. |
| */ |
| unsigned int snd_hdac_stream_format_bits(snd_pcm_format_t format, snd_pcm_subformat_t subformat, |
| unsigned int maxbits) |
| { |
| struct snd_pcm_hw_params params; |
| unsigned int bits; |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| params_set_format(¶ms, snd_hdac_format_normalize(format)); |
| snd_mask_set(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_SUBFORMAT), |
| (__force unsigned int)subformat); |
| |
| bits = snd_pcm_hw_params_bits(¶ms); |
| if (maxbits) |
| return min(bits, maxbits); |
| return bits; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_stream_format_bits); |
| |
| /** |
| * snd_hdac_stream_format - convert format parameters to SDxFMT value. |
| * @channels: the number of channels. |
| * @bits: bits per sample. |
| * @rate: the sample rate. |
| * |
| * Return: The format bitset or zero if invalid. |
| */ |
| unsigned int snd_hdac_stream_format(unsigned int channels, unsigned int bits, unsigned int rate) |
| { |
| unsigned int val = 0; |
| int i; |
| |
| for (i = 0; rate_bits[i].hz; i++) { |
| if (rate_bits[i].hz == rate) { |
| val = rate_bits[i].hda_fmt; |
| break; |
| } |
| } |
| |
| if (!rate_bits[i].hz) |
| return 0; |
| |
| if (channels == 0 || channels > 8) |
| return 0; |
| val |= channels - 1; |
| |
| switch (bits) { |
| case 8: |
| val |= AC_FMT_BITS_8; |
| break; |
| case 16: |
| val |= AC_FMT_BITS_16; |
| break; |
| case 20: |
| val |= AC_FMT_BITS_20; |
| break; |
| case 24: |
| val |= AC_FMT_BITS_24; |
| break; |
| case 32: |
| val |= AC_FMT_BITS_32; |
| break; |
| default: |
| return 0; |
| } |
| |
| return val; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_stream_format); |
| |
| /** |
| * snd_hdac_spdif_stream_format - convert format parameters to SDxFMT value. |
| * @channels: the number of channels. |
| * @bits: bits per sample. |
| * @rate: the sample rate. |
| * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant). |
| * |
| * Return: The format bitset or zero if invalid. |
| */ |
| unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bits, |
| unsigned int rate, unsigned short spdif_ctls) |
| { |
| unsigned int val = snd_hdac_stream_format(channels, bits, rate); |
| |
| if (val && spdif_ctls & AC_DIG1_NONAUDIO) |
| val |= AC_FMT_TYPE_NON_PCM; |
| |
| return val; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_spdif_stream_format); |
| |
| static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) |
| { |
| unsigned int val = 0; |
| |
| if (nid != codec->afg && |
| (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) |
| val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); |
| if (!val || val == -1) |
| val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); |
| if (!val || val == -1) |
| return 0; |
| return val; |
| } |
| |
| static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) |
| { |
| unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); |
| |
| if (!streams || streams == -1) |
| streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); |
| if (!streams || streams == -1) |
| return 0; |
| return streams; |
| } |
| |
| /** |
| * snd_hdac_query_supported_pcm - query the supported PCM rates and formats |
| * @codec: the codec object |
| * @nid: NID to query |
| * @ratesp: the pointer to store the detected rate bitflags |
| * @formatsp: the pointer to store the detected formats |
| * @subformatsp: the pointer to store the detected subformats for S32_LE format |
| * @bpsp: the pointer to store the detected format widths |
| * |
| * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp, |
| * @subformatsp or @bpsp argument is ignored. |
| * |
| * Returns 0 if successful, otherwise a negative error code. |
| */ |
| int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, |
| u32 *ratesp, u64 *formatsp, u32 *subformatsp, |
| unsigned int *bpsp) |
| { |
| unsigned int i, val, wcaps; |
| |
| wcaps = get_wcaps(codec, nid); |
| val = query_pcm_param(codec, nid); |
| |
| if (ratesp) { |
| u32 rates = 0; |
| for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { |
| if (val & (1 << i)) |
| rates |= rate_bits[i].alsa_bits; |
| } |
| if (rates == 0) { |
| dev_err(&codec->dev, |
| "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", |
| nid, val, |
| (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); |
| return -EIO; |
| } |
| *ratesp = rates; |
| } |
| |
| if (formatsp || subformatsp || bpsp) { |
| unsigned int streams, bps; |
| u32 subformats = 0; |
| u64 formats = 0; |
| |
| streams = query_stream_param(codec, nid); |
| if (!streams) |
| return -EIO; |
| |
| bps = 0; |
| if (streams & AC_SUPFMT_PCM) { |
| if (val & AC_SUPPCM_BITS_8) { |
| formats |= SNDRV_PCM_FMTBIT_U8; |
| bps = 8; |
| } |
| if (val & AC_SUPPCM_BITS_16) { |
| formats |= SNDRV_PCM_FMTBIT_S16_LE; |
| bps = 16; |
| } |
| if (val & AC_SUPPCM_BITS_20) { |
| formats |= SNDRV_PCM_FMTBIT_S32_LE; |
| subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_20; |
| bps = 20; |
| } |
| if (val & AC_SUPPCM_BITS_24) { |
| formats |= SNDRV_PCM_FMTBIT_S32_LE; |
| subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_24; |
| bps = 24; |
| } |
| if (val & AC_SUPPCM_BITS_32) { |
| if (wcaps & AC_WCAP_DIGITAL) { |
| formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; |
| } else { |
| formats |= SNDRV_PCM_FMTBIT_S32_LE; |
| subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_MAX; |
| bps = 32; |
| } |
| } |
| } |
| #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ |
| if (streams & AC_SUPFMT_FLOAT32) { |
| formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; |
| if (!bps) |
| bps = 32; |
| } |
| #endif |
| if (streams == AC_SUPFMT_AC3) { |
| /* should be exclusive */ |
| /* temporary hack: we have still no proper support |
| * for the direct AC3 stream... |
| */ |
| formats |= SNDRV_PCM_FMTBIT_U8; |
| bps = 8; |
| } |
| if (formats == 0) { |
| dev_err(&codec->dev, |
| "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", |
| nid, val, |
| (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, |
| streams); |
| return -EIO; |
| } |
| if (formatsp) |
| *formatsp = formats; |
| if (subformatsp) |
| *subformatsp = subformats; |
| if (bpsp) |
| *bpsp = bps; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); |
| |
| /** |
| * snd_hdac_is_supported_format - Check the validity of the format |
| * @codec: the codec object |
| * @nid: NID to check |
| * @format: the HD-audio format value to check |
| * |
| * Check whether the given node supports the format value. |
| * |
| * Returns true if supported, false if not. |
| */ |
| bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, |
| unsigned int format) |
| { |
| int i; |
| unsigned int val = 0, rate, stream; |
| |
| val = query_pcm_param(codec, nid); |
| if (!val) |
| return false; |
| |
| rate = format & 0xff00; |
| for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) |
| if (rate_bits[i].hda_fmt == rate) { |
| if (val & (1 << i)) |
| break; |
| return false; |
| } |
| if (i >= AC_PAR_PCM_RATE_BITS) |
| return false; |
| |
| stream = query_stream_param(codec, nid); |
| if (!stream) |
| return false; |
| |
| if (stream & AC_SUPFMT_PCM) { |
| switch (format & 0xf0) { |
| case 0x00: |
| if (!(val & AC_SUPPCM_BITS_8)) |
| return false; |
| break; |
| case 0x10: |
| if (!(val & AC_SUPPCM_BITS_16)) |
| return false; |
| break; |
| case 0x20: |
| if (!(val & AC_SUPPCM_BITS_20)) |
| return false; |
| break; |
| case 0x30: |
| if (!(val & AC_SUPPCM_BITS_24)) |
| return false; |
| break; |
| case 0x40: |
| if (!(val & AC_SUPPCM_BITS_32)) |
| return false; |
| break; |
| default: |
| return false; |
| } |
| } else { |
| /* FIXME: check for float32 and AC3? */ |
| } |
| |
| return true; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); |
| |
| static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid, |
| int flags, unsigned int verb, unsigned int parm) |
| { |
| unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); |
| unsigned int res; |
| |
| if (snd_hdac_exec_verb(hdac, cmd, flags, &res)) |
| return -1; |
| |
| return res; |
| } |
| |
| static int codec_write(struct hdac_device *hdac, hda_nid_t nid, |
| int flags, unsigned int verb, unsigned int parm) |
| { |
| unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); |
| |
| return snd_hdac_exec_verb(hdac, cmd, flags, NULL); |
| } |
| |
| /** |
| * snd_hdac_codec_read - send a command and get the response |
| * @hdac: the HDAC device |
| * @nid: NID to send the command |
| * @flags: optional bit flags |
| * @verb: the verb to send |
| * @parm: the parameter for the verb |
| * |
| * Send a single command and read the corresponding response. |
| * |
| * Returns the obtained response value, or -1 for an error. |
| */ |
| int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, |
| int flags, unsigned int verb, unsigned int parm) |
| { |
| return codec_read(hdac, nid, flags, verb, parm); |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_codec_read); |
| |
| /** |
| * snd_hdac_codec_write - send a single command without waiting for response |
| * @hdac: the HDAC device |
| * @nid: NID to send the command |
| * @flags: optional bit flags |
| * @verb: the verb to send |
| * @parm: the parameter for the verb |
| * |
| * Send a single command without waiting for response. |
| * |
| * Returns 0 if successful, or a negative error code. |
| */ |
| int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, |
| int flags, unsigned int verb, unsigned int parm) |
| { |
| return codec_write(hdac, nid, flags, verb, parm); |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_codec_write); |
| |
| /** |
| * snd_hdac_check_power_state - check whether the actual power state matches |
| * with the target state |
| * |
| * @hdac: the HDAC device |
| * @nid: NID to send the command |
| * @target_state: target state to check for |
| * |
| * Return true if state matches, false if not |
| */ |
| bool snd_hdac_check_power_state(struct hdac_device *hdac, |
| hda_nid_t nid, unsigned int target_state) |
| { |
| unsigned int state = codec_read(hdac, nid, 0, |
| AC_VERB_GET_POWER_STATE, 0); |
| |
| if (state & AC_PWRST_ERROR) |
| return true; |
| state = (state >> 4) & 0x0f; |
| return (state == target_state); |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_check_power_state); |
| /** |
| * snd_hdac_sync_power_state - wait until actual power state matches |
| * with the target state |
| * |
| * @codec: the HDAC device |
| * @nid: NID to send the command |
| * @power_state: target power state to wait for |
| * |
| * Return power state or PS_ERROR if codec rejects GET verb. |
| */ |
| unsigned int snd_hdac_sync_power_state(struct hdac_device *codec, |
| hda_nid_t nid, unsigned int power_state) |
| { |
| unsigned long end_time = jiffies + msecs_to_jiffies(500); |
| unsigned int state, actual_state, count; |
| |
| for (count = 0; count < 500; count++) { |
| state = snd_hdac_codec_read(codec, nid, 0, |
| AC_VERB_GET_POWER_STATE, 0); |
| if (state & AC_PWRST_ERROR) { |
| msleep(20); |
| break; |
| } |
| actual_state = (state >> 4) & 0x0f; |
| if (actual_state == power_state) |
| break; |
| if (time_after_eq(jiffies, end_time)) |
| break; |
| /* wait until the codec reachs to the target state */ |
| msleep(1); |
| } |
| return state; |
| } |
| EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state); |