diff options
Diffstat (limited to 'sound/hda/hdac_device.c')
| -rw-r--r-- | sound/hda/hdac_device.c | 1171 |
1 files changed, 0 insertions, 1171 deletions
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c deleted file mode 100644 index 0053831eed2d..000000000000 --- a/sound/hda/hdac_device.c +++ /dev/null @@ -1,1171 +0,0 @@ -// 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 > 16) - 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); |