diff options
| author | Cezary Rojewski <cezary.rojewski@intel.com> | 2025-04-07 13:23:43 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-04-07 14:39:55 +0100 |
| commit | 318c9eef63dd30b59dc8d63c7205ae997aa1e524 (patch) | |
| tree | 6b872df13ec857b962ae0148b87227f7e7b3c877 /include/sound/hdaudio_ext.h | |
| parent | 0af2f6be1b4281385b618cb86ad946eded089ac8 (diff) | |
ALSA: hda: Allow to fetch hlink by ID
Starting with LNL platform, Intel HDAudio Links carry IDs specifying
non-HDAudio transfer type they help facilitate e.g.: 0xC0 for I2S as
defined by AZX_REG_ML_LEPTR_ID_INTEL_SSP.
The mechanism accounts for LEPTR register as it is Reserved if
LCAP.ALT for given Link equals 0.
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Link: https://patch.msgid.link/20250407112352.3720779-2-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/hdaudio_ext.h')
| -rw-r--r-- | include/sound/hdaudio_ext.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h index 4c7a40e149a5..60ec12e3b72f 100644 --- a/include/sound/hdaudio_ext.h +++ b/include/sound/hdaudio_ext.h @@ -22,6 +22,7 @@ void snd_hdac_ext_bus_ppcap_enable(struct hdac_bus *chip, bool enable); void snd_hdac_ext_bus_ppcap_int_enable(struct hdac_bus *chip, bool enable); int snd_hdac_ext_bus_get_ml_capabilities(struct hdac_bus *bus); +struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_id(struct hdac_bus *bus, u32 id); struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_addr(struct hdac_bus *bus, int addr); struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_name(struct hdac_bus *bus, const char *codec_name); @@ -97,12 +98,16 @@ struct hdac_ext_link { void __iomem *ml_addr; /* link output stream reg pointer */ u32 lcaps; /* link capablities */ u16 lsdiid; /* link sdi identifier */ + u32 id; int ref_count; struct list_head list; }; +#define hdac_ext_link_alt(link) ((link)->lcaps & AZX_ML_HDA_LCAP_ALT) +#define hdac_ext_link_ofls(link) ((link)->lcaps & AZX_ML_HDA_LCAP_OFLS) + int snd_hdac_ext_bus_link_power_up(struct hdac_ext_link *hlink); int snd_hdac_ext_bus_link_power_down(struct hdac_ext_link *hlink); int snd_hdac_ext_bus_link_power_up_all(struct hdac_bus *bus); |