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soundwire: qcom: allow multi-link on newer devices

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Newer Qualcomm SoCs like X1E80100 might come with four speakers spread
over two Soundwire controllers, thus they need a multi-link Soundwire
stream runtime.

Cc: Mark Brown <broonie@kernel.org>
Cc: alsa-devel@alsa-project.org
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240405144141.47217-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2024-04-05 16:41:41 +02:00 committed by Vinod Koul
parent b18c25afab
commit ce5e811e06
1 changed files with 22 additions and 0 deletions
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22
drivers/soundwire/qcom.c
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@ -905,6 +905,18 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
return 0;
}
static int qcom_swrm_read_prop(struct sdw_bus *bus)
{
struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus);
if (ctrl->version >= SWRM_VERSION_2_0_0) {
bus->multi_link = true;
bus->hw_sync_min_links = 3;
}
return 0;
}
static enum sdw_command_response qcom_swrm_xfer_msg(struct sdw_bus *bus,
struct sdw_msg *msg)
{
@ -1056,6 +1068,7 @@ static const struct sdw_master_port_ops qcom_swrm_port_ops = {
};
static const struct sdw_master_ops qcom_swrm_ops = {
.read_prop = qcom_swrm_read_prop,
.xfer_msg = qcom_swrm_xfer_msg,
.pre_bank_switch = qcom_swrm_pre_bank_switch,
};
@ -1173,6 +1186,15 @@ static int qcom_swrm_stream_alloc_ports(struct qcom_swrm_ctrl *ctrl,
mutex_lock(&ctrl->port_lock);
list_for_each_entry(m_rt, &stream->master_list, stream_node) {
/*
* For streams with multiple masters:
* Allocate ports only for devices connected to this master.
* Such devices will have ports allocated by their own master
* and its qcom_swrm_stream_alloc_ports() call.
*/
if (ctrl->bus.id != m_rt->bus->id)
continue;
if (m_rt->direction == SDW_DATA_DIR_RX) {
maxport = ctrl->num_dout_ports;
port_mask = &ctrl->dout_port_mask;