diff options
author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2023-04-04 13:41:24 +0300 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2023-04-06 18:45:47 +0300 |
commit | 87a6ddc0cf1c62dbc7c2cc4b5f764a2e992c5ba6 (patch) | |
tree | 6a374d0819374e5b855d3787fa052758462fd846 /sound/soc/sof/intel/hda-mlink.c | |
parent | d56d205857a2f6e10a1047532134321072f758b7 (diff) | |
download | linux-87a6ddc0cf1c62dbc7c2cc4b5f764a2e992c5ba6.tar.xz |
ASoC: SOF: Intel: hda-mlink: program SoundWire LSDIID registers
Each SoundWire peripheral can be programmed from the manager side
either with a regular command FIFO, or with the HDaudio CORB/RIRB
DMA-based mechanism. The mapping between SoundWire peripheral and SDI
address is handled with the LSDIID register.
This mapping only works of course if each peripheral has a unique
address across all links. This has already been enforced in previous
Intel contributions allowing for an IDA-based solution for the device
number allocation.
The checks on the dev_num are handled at the SoundWire level, but the
locking is handled at the hda-mlink level.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20230404104127.5629-16-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/intel/hda-mlink.c')
-rw-r--r-- | sound/soc/sof/intel/hda-mlink.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda-mlink.c b/sound/soc/sof/intel/hda-mlink.c index cbbc8639691c..5810d6f8719c 100644 --- a/sound/soc/sof/intel/hda-mlink.c +++ b/sound/soc/sof/intel/hda-mlink.c @@ -323,6 +323,16 @@ static bool hdaml_link_check_cmdsync(u32 __iomem *lsync, u32 cmdsync_mask) return !!(val & cmdsync_mask); } +static void hdaml_link_set_lsdiid(u32 __iomem *lsdiid, int dev_num) +{ + u32 val; + + val = readl(lsdiid); + val |= BIT(dev_num); + + writel(val, lsdiid); +} + /* END HDAML section */ static int hda_ml_alloc_h2link(struct hdac_bus *bus, int index) @@ -698,6 +708,26 @@ int hdac_bus_eml_sdw_power_down_unlocked(struct hdac_bus *bus, int sublink) } EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_power_down_unlocked, SND_SOC_SOF_HDA_MLINK); +int hdac_bus_eml_sdw_set_lsdiid(struct hdac_bus *bus, int sublink, int dev_num) +{ + struct hdac_ext2_link *h2link; + struct hdac_ext_link *hlink; + + h2link = find_ext2_link(bus, true, AZX_REG_ML_LEPTR_ID_SDW); + if (!h2link) + return -ENODEV; + + hlink = &h2link->hext_link; + + mutex_lock(&h2link->eml_lock); + + hdaml_link_set_lsdiid(hlink->ml_addr + AZX_REG_ML_LSDIID_OFFSET(sublink), dev_num); + + mutex_unlock(&h2link->eml_lock); + + return 0; +} EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_set_lsdiid, SND_SOC_SOF_HDA_MLINK); + void hda_bus_ml_put_all(struct hdac_bus *bus) { struct hdac_ext_link *hlink; |