mirror of https://gitee.com/openkylin/linux.git
Improvements to the hdmi-codec driver and ALSA infrastructure around it
to support the HDMI Channel Mapping and IEC958 controls -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCYMHitQAKCRDj7w1vZxhR xQ40AP49z0mUifkpbyUvYwdmrUVlg2JEWSTOWaH3tp0kke/dBQEA1vYxdMimhFu3 SYKXxgtvlT7vL48vNYBxGbNuGQvzJw4= =IWna -----END PGP SIGNATURE----- gpgsig -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmDHK+QACgkQJNaLcl1U h9DGHAf/ZhveHulV/2ysiFroyNxcp0PLT49/I/2AAyPhglREmbrXhWCALLcVf0ur UqN2OlvdaiiozXHqsLrm5i1qKvz86659FPv8kEBpLyOgvCpsOu+HnjYk+EEJ2nDf u8YDbXc5HZQ6bLD2cz/KRKPs7HlTtzq5yCn1tPsaNvcnOQ3/XnyeDo7XegIiah46 ts3mnOHTvYDujMehxIxMW0oe29pz6qibHynG4iNiEkVw0ZlBvHC4d0MWunSP8GpV wrHt62K0xgrI5UU4ilpIXozUiFZGiFm9grPwZ6sXFGEvtSVLRUJebnCGe5ccgXQ5 4iNE9EClQHYZZm/vYpB4YxTPis1+bQ== =k79R -----END PGP SIGNATURE----- Merge tag 'asoc-hdmi-codec-improvements-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into asoc-5.14 Improvements to the hdmi-codec driver and ALSA infrastructure around it to support the HDMI Channel Mapping and IEC958 controls
This commit is contained in:
Mark Brown
commit
116b1e12b7
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@ -3508,14 +3508,15 @@ field must be set, though).
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“IEC958 Playback Con Mask” is used to return the bit-mask for the IEC958
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status bits of consumer mode. Similarly, “IEC958 Playback Pro Mask”
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returns the bitmask for professional mode. They are read-only controls,
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and are defined as MIXER controls (iface =
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``SNDRV_CTL_ELEM_IFACE_MIXER``).
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returns the bitmask for professional mode. They are read-only controls.
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Meanwhile, “IEC958 Playback Default” control is defined for getting and
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setting the current default IEC958 bits. Note that this one is usually
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defined as a PCM control (iface = ``SNDRV_CTL_ELEM_IFACE_PCM``),
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although in some places it's defined as a MIXER control.
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setting the current default IEC958 bits.
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Due to historical reasons, both variants of the Playback Mask and the
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Playback Default controls can be implemented on either a
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``SNDRV_CTL_ELEM_IFACE_PCM`` or a ``SNDRV_CTL_ELEM_IFACE_MIXER`` iface.
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Drivers should expose the mask and default on the same iface though.
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In addition, you can define the control switches to enable/disable or to
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set the raw bit mode. The implementation will depend on the chip, but
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@ -65,12 +65,22 @@ struct hdmi_codec_ops {
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/*
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* Configures HDMI-encoder for audio stream.
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* Mandatory
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* Having either prepare or hw_params is mandatory.
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*/
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int (*hw_params)(struct device *dev, void *data,
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struct hdmi_codec_daifmt *fmt,
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struct hdmi_codec_params *hparms);
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/*
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* Configures HDMI-encoder for audio stream. Can be called
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* multiple times for each setup.
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*
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* Having either prepare or hw_params is mandatory.
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*/
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int (*prepare)(struct device *dev, void *data,
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struct hdmi_codec_daifmt *fmt,
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struct hdmi_codec_params *hparms);
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/*
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* Shuts down the audio stream.
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* Mandatory
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@ -4,6 +4,14 @@
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#include <linux/types.h>
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int snd_pcm_create_iec958_consumer_default(u8 *cs, size_t len);
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int snd_pcm_fill_iec958_consumer(struct snd_pcm_runtime *runtime, u8 *cs,
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size_t len);
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int snd_pcm_fill_iec958_consumer_hw_params(struct snd_pcm_hw_params *params,
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u8 *cs, size_t len);
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int snd_pcm_create_iec958_consumer(struct snd_pcm_runtime *runtime, u8 *cs,
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size_t len);
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@ -9,14 +9,51 @@
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#include <sound/pcm_params.h>
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#include <sound/pcm_iec958.h>
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static int create_iec958_consumer(uint rate, uint sample_width,
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u8 *cs, size_t len)
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/**
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* snd_pcm_create_iec958_consumer_default - create default consumer format IEC958 channel status
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* @cs: channel status buffer, at least four bytes
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* @len: length of channel status buffer
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*
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* Create the consumer format channel status data in @cs of maximum size
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* @len. When relevant, the configuration-dependant bits will be set as
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* unspecified.
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*
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* Drivers should then call einter snd_pcm_fill_iec958_consumer() or
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* snd_pcm_fill_iec958_consumer_hw_params() to replace these unspecified
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* bits by their actual values.
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*
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* Drivers may wish to tweak the contents of the buffer after creation.
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*
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* Returns: length of buffer, or negative error code if something failed.
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*/
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int snd_pcm_create_iec958_consumer_default(u8 *cs, size_t len)
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{
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unsigned int fs, ws;
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if (len < 4)
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return -EINVAL;
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memset(cs, 0, len);
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cs[0] = IEC958_AES0_CON_NOT_COPYRIGHT | IEC958_AES0_CON_EMPHASIS_NONE;
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cs[1] = IEC958_AES1_CON_GENERAL;
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cs[2] = IEC958_AES2_CON_SOURCE_UNSPEC | IEC958_AES2_CON_CHANNEL_UNSPEC;
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cs[3] = IEC958_AES3_CON_CLOCK_1000PPM | IEC958_AES3_CON_FS_NOTID;
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if (len > 4)
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cs[4] = IEC958_AES4_CON_WORDLEN_NOTID;
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return len;
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}
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EXPORT_SYMBOL_GPL(snd_pcm_create_iec958_consumer_default);
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static int fill_iec958_consumer(uint rate, uint sample_width,
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u8 *cs, size_t len)
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{
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if (len < 4)
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return -EINVAL;
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if ((cs[3] & IEC958_AES3_CON_FS) == IEC958_AES3_CON_FS_NOTID) {
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unsigned int fs;
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switch (rate) {
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case 32000:
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fs = IEC958_AES3_CON_FS_32000;
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@ -43,7 +80,14 @@ static int create_iec958_consumer(uint rate, uint sample_width,
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return -EINVAL;
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}
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if (len > 4) {
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cs[3] &= ~IEC958_AES3_CON_FS;
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cs[3] |= fs;
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}
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if (len > 4 &&
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(cs[4] & IEC958_AES4_CON_WORDLEN) == IEC958_AES4_CON_WORDLEN_NOTID) {
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unsigned int ws;
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switch (sample_width) {
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case 16:
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ws = IEC958_AES4_CON_WORDLEN_20_16;
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@ -64,21 +108,58 @@ static int create_iec958_consumer(uint rate, uint sample_width,
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default:
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return -EINVAL;
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}
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cs[4] &= ~IEC958_AES4_CON_WORDLEN;
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cs[4] |= ws;
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}
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memset(cs, 0, len);
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cs[0] = IEC958_AES0_CON_NOT_COPYRIGHT | IEC958_AES0_CON_EMPHASIS_NONE;
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cs[1] = IEC958_AES1_CON_GENERAL;
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cs[2] = IEC958_AES2_CON_SOURCE_UNSPEC | IEC958_AES2_CON_CHANNEL_UNSPEC;
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cs[3] = IEC958_AES3_CON_CLOCK_1000PPM | fs;
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if (len > 4)
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cs[4] = ws;
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return len;
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}
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/**
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* snd_pcm_fill_iec958_consumer - Fill consumer format IEC958 channel status
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* @runtime: pcm runtime structure with ->rate filled in
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* @cs: channel status buffer, at least four bytes
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* @len: length of channel status buffer
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*
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* Fill the unspecified bits in an IEC958 status bits array using the
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* parameters of the PCM runtime @runtime.
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*
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* Drivers may wish to tweak the contents of the buffer after its been
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* filled.
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*
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* Returns: length of buffer, or negative error code if something failed.
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*/
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int snd_pcm_fill_iec958_consumer(struct snd_pcm_runtime *runtime,
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u8 *cs, size_t len)
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{
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return fill_iec958_consumer(runtime->rate,
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snd_pcm_format_width(runtime->format),
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cs, len);
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}
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EXPORT_SYMBOL_GPL(snd_pcm_fill_iec958_consumer);
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/**
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* snd_pcm_fill_iec958_consumer_hw_params - Fill consumer format IEC958 channel status
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* @params: the hw_params instance for extracting rate and sample format
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* @cs: channel status buffer, at least four bytes
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* @len: length of channel status buffer
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*
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* Fill the unspecified bits in an IEC958 status bits array using the
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* parameters of the PCM hardware parameters @params.
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*
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* Drivers may wish to tweak the contents of the buffer after its been
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* filled..
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*
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* Returns: length of buffer, or negative error code if something failed.
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*/
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int snd_pcm_fill_iec958_consumer_hw_params(struct snd_pcm_hw_params *params,
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u8 *cs, size_t len)
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{
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return fill_iec958_consumer(params_rate(params), params_width(params), cs, len);
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}
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EXPORT_SYMBOL_GPL(snd_pcm_fill_iec958_consumer_hw_params);
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/**
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* snd_pcm_create_iec958_consumer - create consumer format IEC958 channel status
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* @runtime: pcm runtime structure with ->rate filled in
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@ -95,9 +176,13 @@ static int create_iec958_consumer(uint rate, uint sample_width,
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int snd_pcm_create_iec958_consumer(struct snd_pcm_runtime *runtime, u8 *cs,
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size_t len)
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{
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return create_iec958_consumer(runtime->rate,
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snd_pcm_format_width(runtime->format),
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cs, len);
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int ret;
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ret = snd_pcm_create_iec958_consumer_default(cs, len);
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if (ret < 0)
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return ret;
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return snd_pcm_fill_iec958_consumer(runtime, cs, len);
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}
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EXPORT_SYMBOL(snd_pcm_create_iec958_consumer);
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@ -117,7 +202,12 @@ EXPORT_SYMBOL(snd_pcm_create_iec958_consumer);
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int snd_pcm_create_iec958_consumer_hw_params(struct snd_pcm_hw_params *params,
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u8 *cs, size_t len)
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{
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return create_iec958_consumer(params_rate(params), params_width(params),
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cs, len);
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int ret;
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ret = snd_pcm_create_iec958_consumer_default(cs, len);
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if (ret < 0)
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return ret;
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return fill_iec958_consumer(params_rate(params), params_width(params), cs, len);
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}
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EXPORT_SYMBOL(snd_pcm_create_iec958_consumer_hw_params);
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@ -277,6 +277,7 @@ struct hdmi_codec_priv {
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bool busy;
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struct snd_soc_jack *jack;
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unsigned int jack_status;
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u8 iec_status[5];
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};
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static const struct snd_soc_dapm_widget hdmi_widgets[] = {
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@ -385,6 +386,47 @@ static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
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return 0;
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}
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static int hdmi_codec_iec958_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
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uinfo->count = 1;
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return 0;
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}
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static int hdmi_codec_iec958_default_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
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struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
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memcpy(ucontrol->value.iec958.status, hcp->iec_status,
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sizeof(hcp->iec_status));
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return 0;
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}
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static int hdmi_codec_iec958_default_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
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struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
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memcpy(hcp->iec_status, ucontrol->value.iec958.status,
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sizeof(hcp->iec_status));
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return 0;
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}
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static int hdmi_codec_iec958_mask_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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memset(ucontrol->value.iec958.status, 0xff,
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sizeof_field(struct hdmi_codec_priv, iec_status));
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return 0;
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}
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static int hdmi_codec_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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@ -439,6 +481,42 @@ static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
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mutex_unlock(&hcp->lock);
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}
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static int hdmi_codec_fill_codec_params(struct snd_soc_dai *dai,
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unsigned int sample_width,
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unsigned int sample_rate,
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unsigned int channels,
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struct hdmi_codec_params *hp)
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{
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struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
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int idx;
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/* Select a channel allocation that matches with ELD and pcm channels */
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idx = hdmi_codec_get_ch_alloc_table_idx(hcp, channels);
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if (idx < 0) {
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dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
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idx);
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hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
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return idx;
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}
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memset(hp, 0, sizeof(*hp));
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hdmi_audio_infoframe_init(&hp->cea);
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hp->cea.channels = channels;
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hp->cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
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hp->cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
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hp->cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
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hp->cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
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hp->sample_width = sample_width;
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hp->sample_rate = sample_rate;
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hp->channels = channels;
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hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
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return 0;
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}
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static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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|
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@ -453,13 +531,25 @@ static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
|
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.dig_subframe = { 0 },
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}
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};
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int ret, idx;
|
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int ret;
|
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|
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if (!hcp->hcd.ops->hw_params)
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return 0;
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dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
|
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params_width(params), params_rate(params),
|
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params_channels(params));
|
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|
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ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
|
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ret = hdmi_codec_fill_codec_params(dai,
|
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params_width(params),
|
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params_rate(params),
|
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params_channels(params),
|
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&hp);
|
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if (ret < 0)
|
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return ret;
|
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|
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memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
|
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ret = snd_pcm_fill_iec958_consumer_hw_params(params, hp.iec.status,
|
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sizeof(hp.iec.status));
|
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if (ret < 0) {
|
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dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
|
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|
|
@ -467,32 +557,47 @@ static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
|
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return ret;
|
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}
|
||||
|
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hdmi_audio_infoframe_init(&hp.cea);
|
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hp.cea.channels = params_channels(params);
|
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hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
|
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hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
|
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hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
|
||||
|
||||
/* Select a channel allocation that matches with ELD and pcm channels */
|
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idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
|
||||
if (idx < 0) {
|
||||
dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
|
||||
idx);
|
||||
hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
|
||||
return idx;
|
||||
}
|
||||
hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
|
||||
hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
|
||||
|
||||
hp.sample_width = params_width(params);
|
||||
hp.sample_rate = params_rate(params);
|
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hp.channels = params_channels(params);
|
||||
|
||||
cf->bit_fmt = params_format(params);
|
||||
return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
|
||||
cf, &hp);
|
||||
}
|
||||
|
||||
static int hdmi_codec_prepare(struct snd_pcm_substream *substream,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
|
||||
struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
unsigned int channels = runtime->channels;
|
||||
unsigned int width = snd_pcm_format_width(runtime->format);
|
||||
unsigned int rate = runtime->rate;
|
||||
struct hdmi_codec_params hp;
|
||||
int ret;
|
||||
|
||||
if (!hcp->hcd.ops->prepare)
|
||||
return 0;
|
||||
|
||||
dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
|
||||
width, rate, channels);
|
||||
|
||||
ret = hdmi_codec_fill_codec_params(dai, width, rate, channels, &hp);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
|
||||
ret = snd_pcm_fill_iec958_consumer(runtime, hp.iec.status,
|
||||
sizeof(hp.iec.status));
|
||||
if (ret < 0) {
|
||||
dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
cf->bit_fmt = runtime->format;
|
||||
return hcp->hcd.ops->prepare(dai->dev->parent, hcp->hcd.data,
|
||||
cf, &hp);
|
||||
}
|
||||
|
||||
static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
|
||||
unsigned int fmt)
|
||||
{
|
||||
|
|
@ -603,6 +708,7 @@ static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
|
|||
.startup = hdmi_codec_startup,
|
||||
.shutdown = hdmi_codec_shutdown,
|
||||
.hw_params = hdmi_codec_hw_params,
|
||||
.prepare = hdmi_codec_prepare,
|
||||
.set_fmt = hdmi_codec_i2s_set_fmt,
|
||||
.mute_stream = hdmi_codec_mute,
|
||||
.auto_selectable_formats = &hdmi_codec_formats,
|
||||
|
|
@ -641,21 +747,37 @@ static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
|
|||
SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE |\
|
||||
SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
|
||||
|
||||
struct snd_kcontrol_new hdmi_codec_controls[] = {
|
||||
{
|
||||
.access = SNDRV_CTL_ELEM_ACCESS_READ,
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
|
||||
.info = hdmi_codec_iec958_info,
|
||||
.get = hdmi_codec_iec958_mask_get,
|
||||
},
|
||||
{
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
|
||||
.info = hdmi_codec_iec958_info,
|
||||
.get = hdmi_codec_iec958_default_get,
|
||||
.put = hdmi_codec_iec958_default_put,
|
||||
},
|
||||
{
|
||||
.access = (SNDRV_CTL_ELEM_ACCESS_READ |
|
||||
SNDRV_CTL_ELEM_ACCESS_VOLATILE),
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = "ELD",
|
||||
.info = hdmi_eld_ctl_info,
|
||||
.get = hdmi_eld_ctl_get,
|
||||
},
|
||||
};
|
||||
|
||||
static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
struct snd_soc_dai_driver *drv = dai->driver;
|
||||
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
|
||||
struct snd_kcontrol *kctl;
|
||||
struct snd_kcontrol_new hdmi_eld_ctl = {
|
||||
.access = SNDRV_CTL_ELEM_ACCESS_READ |
|
||||
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = "ELD",
|
||||
.info = hdmi_eld_ctl_info,
|
||||
.get = hdmi_eld_ctl_get,
|
||||
.device = rtd->pcm->device,
|
||||
};
|
||||
unsigned int i;
|
||||
int ret;
|
||||
|
||||
ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
|
||||
|
|
@ -672,12 +794,21 @@ static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
|
|||
hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
|
||||
hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) {
|
||||
struct snd_kcontrol *kctl;
|
||||
|
||||
/* add ELD ctl with the device number corresponding to the PCM stream */
|
||||
kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
|
||||
kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component);
|
||||
if (!kctl)
|
||||
return -ENOMEM;
|
||||
|
||||
return snd_ctl_add(rtd->card->snd_card, kctl);
|
||||
kctl->id.device = rtd->pcm->device;
|
||||
ret = snd_ctl_add(rtd->card->snd_card, kctl);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hdmi_dai_probe(struct snd_soc_dai *dai)
|
||||
|
|
@ -870,7 +1001,8 @@ static int hdmi_codec_probe(struct platform_device *pdev)
|
|||
}
|
||||
|
||||
dai_count = hcd->i2s + hcd->spdif;
|
||||
if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
|
||||
if (dai_count < 1 || !hcd->ops ||
|
||||
(!hcd->ops->hw_params && !hcd->ops->prepare) ||
|
||||
!hcd->ops->audio_shutdown) {
|
||||
dev_err(dev, "%s: Invalid parameters\n", __func__);
|
||||
return -EINVAL;
|
||||
|
|
@ -883,6 +1015,11 @@ static int hdmi_codec_probe(struct platform_device *pdev)
|
|||
hcp->hcd = *hcd;
|
||||
mutex_init(&hcp->lock);
|
||||
|
||||
ret = snd_pcm_create_iec958_consumer_default(hcp->iec_status,
|
||||
sizeof(hcp->iec_status));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
|
||||
if (!daidrv)
|
||||
return -ENOMEM;
|
||||
|
|
|
|||
Loading…
Reference in New Issue