diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2023-05-15 15:10:27 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-05-27 16:06:45 +0530 |
| commit | 806f5abd9ce7af9b0140976095e57614364d4011 (patch) | |
| tree | 7a81c67a4b4f5eb4163f9629dc4aa9eff53795e9 /drivers/soundwire | |
| parent | 312316d5a16c46ae0630dda574b243dba06195c6 (diff) | |
| download | linux-806f5abd9ce7af9b0140976095e57614364d4011.tar.gz | |
soundwire: intel_ace2x: add link power-up/down helpers
only power-up/down for now, the frequency is not set.
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/20230515071042.2038-12-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 | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/soundwire/intel_ace2x.c b/drivers/soundwire/intel_ace2x.c index 1c47bb2adb93d..5b6a608e63bab 100644 --- a/drivers/soundwire/intel_ace2x.c +++ b/drivers/soundwire/intel_ace2x.c @@ -10,12 +10,62 @@ #include <linux/soundwire/sdw_registers.h> #include <linux/soundwire/sdw.h> #include <linux/soundwire/sdw_intel.h> +#include <sound/hda-mlink.h> #include "cadence_master.h" #include "bus.h" #include "intel.h" +static int intel_link_power_up(struct sdw_intel *sdw) +{ + int ret; + + mutex_lock(sdw->link_res->shim_lock); + + ret = hdac_bus_eml_sdw_power_up_unlocked(sdw->link_res->hbus, sdw->instance); + if (ret < 0) { + dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_power_up failed: %d\n", + __func__, ret); + goto out; + } + + sdw->cdns.link_up = true; +out: + mutex_unlock(sdw->link_res->shim_lock); + + return ret; +} + +static int intel_link_power_down(struct sdw_intel *sdw) +{ + int ret; + + mutex_lock(sdw->link_res->shim_lock); + + sdw->cdns.link_up = false; + + ret = hdac_bus_eml_sdw_power_down_unlocked(sdw->link_res->hbus, sdw->instance); + if (ret < 0) { + dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_power_down failed: %d\n", + __func__, ret); + + /* + * we leave the sdw->cdns.link_up flag as false since we've disabled + * the link at this point and cannot handle interrupts any longer. + */ + } + + mutex_unlock(sdw->link_res->shim_lock); + + return ret; +} + const struct sdw_intel_hw_ops sdw_intel_lnl_hw_ops = { .debugfs_init = intel_ace2x_debugfs_init, .debugfs_exit = intel_ace2x_debugfs_exit, + + .link_power_up = intel_link_power_up, + .link_power_down = intel_link_power_down, }; EXPORT_SYMBOL_NS(sdw_intel_lnl_hw_ops, SOUNDWIRE_INTEL); + +MODULE_IMPORT_NS(SND_SOC_SOF_HDA_MLINK); |