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soundwire: intel_ace2x: add link power-up/down helpers

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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>
This commit is contained in:
Pierre-Louis Bossart 2023-05-15 15:10:27 +08:00 committed by Vinod Koul
parent 312316d5a1
commit 806f5abd9c
1 changed files with 50 additions and 0 deletions
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50
drivers/soundwire/intel_ace2x.c
View file

@ -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);