WSA Soundwire controller needs an full reset if clock stop support is not available in slave devices. WSA881x does not support clock stop however WSA883x supports clock stop.
Make setting this flag at runtime to address above issue.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- drivers/soundwire/qcom.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c index 74e38c0d651b..0224a5a866de 100644 --- a/drivers/soundwire/qcom.c +++ b/drivers/soundwire/qcom.c @@ -536,10 +536,14 @@ static int qcom_swrm_enumerate(struct sdw_bus *bus)
sdw_extract_slave_id(bus, addr, &id); found = false; + ctrl->clock_stop_not_supported = false; /* Now compare with entries */ list_for_each_entry_safe(slave, _s, &bus->slaves, node) { if (sdw_compare_devid(slave, id) == 0) { qcom_swrm_set_slave_dev_num(bus, slave, i); + if (!slave->prop.simple_clk_stop_capable) + ctrl->clock_stop_not_supported = true; + found = true; break; } @@ -1500,15 +1504,6 @@ static int qcom_swrm_probe(struct platform_device *pdev) (ctrl->version >> 24) & 0xff, (ctrl->version >> 16) & 0xff, ctrl->version & 0xffff);
- /* Clk stop is not supported on WSA Soundwire masters */ - if (ctrl->version <= 0x01030000) { - ctrl->clock_stop_not_supported = true; - } else { - ctrl->reg_read(ctrl, SWRM_COMP_MASTER_ID, &val); - if (val == MASTER_ID_WSA) - ctrl->clock_stop_not_supported = true; - } - #ifdef CONFIG_DEBUG_FS ctrl->debugfs = debugfs_create_dir("qualcomm-sdw", ctrl->bus.debugfs); debugfs_create_file("qualcomm-registers", 0400, ctrl->debugfs, ctrl,