diff options
Diffstat (limited to 'drivers/soundwire/intel_ace2x.c')
| -rw-r--r-- | drivers/soundwire/intel_ace2x.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/soundwire/intel_ace2x.c b/drivers/soundwire/intel_ace2x.c index 781fe0aefa68..fff312c6968d 100644 --- a/drivers/soundwire/intel_ace2x.c +++ b/drivers/soundwire/intel_ace2x.c @@ -706,10 +706,30 @@ static void intel_program_sdi(struct sdw_intel *sdw, int dev_num) __func__, sdw->instance, dev_num); } +static int intel_get_link_count(struct sdw_intel *sdw) +{ + int ret; + + ret = hdac_bus_eml_get_count(sdw->link_res->hbus, true, AZX_REG_ML_LEPTR_ID_SDW); + if (!ret) { + dev_err(sdw->cdns.dev, "%s: could not retrieve link count\n", __func__); + return -ENODEV; + } + + if (ret > SDW_INTEL_MAX_LINKS) { + dev_err(sdw->cdns.dev, "%s: link count %d exceed max %d\n", __func__, ret, SDW_INTEL_MAX_LINKS); + return -EINVAL; + } + + 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, + .get_link_count = intel_get_link_count, + .register_dai = intel_register_dai, .check_clock_stop = intel_check_clock_stop, |