#include <linux/pm_runtime.h>
#include <sound/hdaudio.h>
#include <sound/hda_regmap.h>
+#include <sound/pcm.h>
#include "local.h"
static void setup_fg_nodes(struct hdac_device *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(struct hdac_device *codec, char *buf, size_t size)
+{
+ return snprintf(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
}
EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets);
+/**
+ * snd_hdac_refresh_widget_sysfs - Reset the codec widgets and reinit the
+ * codec sysfs
+ * @codec: the codec object
+ *
+ * first we need to remove sysfs, then refresh widgets and lastly
+ * recreate it
+ */
+int snd_hdac_refresh_widget_sysfs(struct hdac_device *codec)
+{
+ int ret;
+
+ if (device_is_registered(&codec->dev))
+ hda_widget_sysfs_exit(codec);
+ ret = snd_hdac_refresh_widgets(codec);
+ if (ret) {
+ dev_err(&codec->dev, "failed to refresh widget: %d\n", ret);
+ return ret;
+ }
+ if (device_is_registered(&codec->dev)) {
+ ret = hda_widget_sysfs_init(codec);
+ if (ret) {
+ dev_err(&codec->dev, "failed to init sysfs: %d\n", ret);
+ return ret;
+ }
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_refresh_widget_sysfs);
+
/* return CONNLIST_LEN parameter of the given widget */
static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid)
{
* 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.
*/
-void snd_hdac_power_up(struct hdac_device *codec)
+int snd_hdac_power_up(struct hdac_device *codec)
{
- pm_runtime_get_sync(&codec->dev);
+ 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.
*/
-void snd_hdac_power_down(struct hdac_device *codec)
+int snd_hdac_power_down(struct hdac_device *codec)
{
struct device *dev = &codec->dev;
pm_runtime_mark_last_busy(dev);
- pm_runtime_put_autosuspend(dev);
+ return pm_runtime_put_autosuspend(dev);
}
EXPORT_SYMBOL_GPL(snd_hdac_power_down);
* 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.
*/
-void snd_hdac_power_up_pm(struct hdac_device *codec)
+int snd_hdac_power_up_pm(struct hdac_device *codec)
{
if (!atomic_inc_not_zero(&codec->in_pm))
- snd_hdac_power_up(codec);
+ return snd_hdac_power_up(codec);
+ return 0;
}
EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
*
* 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.
*/
-void snd_hdac_power_down_pm(struct hdac_device *codec)
+int snd_hdac_power_down_pm(struct hdac_device *codec)
{
if (atomic_dec_if_positive(&codec->in_pm) < 0)
- snd_hdac_power_down(codec);
+ return snd_hdac_power_down(codec);
+ return 0;
}
EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
#endif
+/**
+ * snd_hdac_link_power - Enable/disable the link power for a codec
+ * @codec: the codec object
+ * @bool: enable or disable the link power
+ */
+int snd_hdac_link_power(struct hdac_device *codec, bool enable)
+{
+ if (!codec->link_power_control)
+ return 0;
+
+ if (codec->bus->ops->link_power)
+ return codec->bus->ops->link_power(codec->bus, enable);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_link_power);
+
/* codec vendor labels */
struct hda_vendor_id {
unsigned int id;
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 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 */
+};
+
+/**
+ * snd_hdac_calc_stream_format - calculate the format bitset
+ * @rate: the sample rate
+ * @channels: the number of channels
+ * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
+ * @maxbps: the max. bps
+ * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant)
+ *
+ * Calculate the format bitset from the given rate, channels and th PCM format.
+ *
+ * Return zero if invalid.
+ */
+unsigned int snd_hdac_calc_stream_format(unsigned int rate,
+ unsigned int channels,
+ unsigned int format,
+ unsigned int maxbps,
+ unsigned short spdif_ctls)
+{
+ int i;
+ unsigned int val = 0;
+
+ 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 (snd_pcm_format_width(format)) {
+ case 8:
+ val |= AC_FMT_BITS_8;
+ break;
+ case 16:
+ val |= AC_FMT_BITS_16;
+ break;
+ case 20:
+ case 24:
+ case 32:
+ if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE)
+ val |= AC_FMT_BITS_32;
+ else if (maxbps >= 24)
+ val |= AC_FMT_BITS_24;
+ else
+ val |= AC_FMT_BITS_20;
+ break;
+ default:
+ return 0;
+ }
+
+ if (spdif_ctls & AC_DIG1_NONAUDIO)
+ val |= AC_FMT_TYPE_NON_PCM;
+
+ return val;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_calc_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
+ * @bpsp: the pointer to store the detected format widths
+ *
+ * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp
+ * or @bsps 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, 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 || bpsp) {
+ u64 formats = 0;
+ unsigned int streams, bps;
+
+ 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 (wcaps & AC_WCAP_DIGITAL) {
+ if (val & AC_SUPPCM_BITS_32)
+ formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
+ if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
+ formats |= SNDRV_PCM_FMTBIT_S32_LE;
+ if (val & AC_SUPPCM_BITS_24)
+ bps = 24;
+ else if (val & AC_SUPPCM_BITS_20)
+ bps = 20;
+ } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
+ AC_SUPPCM_BITS_32)) {
+ formats |= SNDRV_PCM_FMTBIT_S32_LE;
+ if (val & AC_SUPPCM_BITS_32)
+ bps = 32;
+ else if (val & AC_SUPPCM_BITS_24)
+ bps = 24;
+ else if (val & AC_SUPPCM_BITS_20)
+ bps = 20;
+ }
+ }
+#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 (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);
Code Review / kvmfornfv.git / blobdiff