diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2023-05-15 15:10:29 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-05-27 16:06:46 +0530 |
| commit | f40bb2446f1e27f14fff97b811ed862ef73a6583 (patch) | |
| tree | ff0a49459374fd67d165ea52cea8b7dfd62ed616 /drivers/soundwire | |
| parent | d3565643dda3260dcb7c17b57759e35a02908d17 (diff) | |
| download | linux-f40bb2446f1e27f14fff97b811ed862ef73a6583.tar.gz | |
soundwire: intel_ace2x: configure link PHY
Unlike previous hardware generations, the glue-to-master transition is
not managed by software, instead the transitions are managed as part
of the power-up/down sequences controlled by SPA/CPA bits.
The only thing that's required is to configure the link PHY for
'normal' operation instead of the PHY test mode.
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: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230515071042.2038-14-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire')
| -rw-r--r-- | drivers/soundwire/intel_ace2x.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/soundwire/intel_ace2x.c b/drivers/soundwire/intel_ace2x.c index 01668246b7ba6..5deff32976f13 100644 --- a/drivers/soundwire/intel_ace2x.c +++ b/drivers/soundwire/intel_ace2x.c @@ -15,6 +15,22 @@ #include "bus.h" #include "intel.h" +/* + * shim vendor-specific (vs) ops + */ + +static void intel_shim_vs_init(struct sdw_intel *sdw) +{ + void __iomem *shim_vs = sdw->link_res->shim_vs; + u16 act = 0; + + u16p_replace_bits(&act, 0x1, SDW_SHIM2_INTEL_VS_ACTMCTL_DOAIS); + act |= SDW_SHIM2_INTEL_VS_ACTMCTL_DACTQE; + act |= SDW_SHIM2_INTEL_VS_ACTMCTL_DODS; + intel_writew(shim_vs, SDW_SHIM2_INTEL_VS_ACTMCTL, act); + usleep_range(10, 15); +} + static int intel_link_power_up(struct sdw_intel *sdw) { struct sdw_bus *bus = &sdw->cdns.bus; @@ -63,6 +79,9 @@ static int intel_link_power_up(struct sdw_intel *sdw) *shim_mask |= BIT(link_id); sdw->cdns.link_up = true; + + intel_shim_vs_init(sdw); + out: mutex_unlock(sdw->link_res->shim_lock); |