Some of the SoundWire device ports are statically mapped to Controller ports during design, however there is no way to expose this information to the controller. Controllers like Qualcomm ones use this info to setup static bandwidth parameters for those ports.
A generic port allocation is not possible in this cases! So this patch adds a new member m_port_map to struct sdw_slave to expose this static map.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- include/linux/soundwire/sdw.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index d08039d65825..2f52d6609076 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -614,6 +614,7 @@ struct sdw_slave_ops { * @debugfs: Slave debugfs * @node: node for bus list * @port_ready: Port ready completion flag for each Slave port + * @m_port_map: static Master port map for each Slave port * @dev_num: Current Device Number, values can be 0 or dev_num_sticky * @dev_num_sticky: one-time static Device Number assigned by Bus * @probed: boolean tracking driver state @@ -645,6 +646,7 @@ struct sdw_slave { #endif struct list_head node; struct completion port_ready[SDW_MAX_PORTS]; + unsigned int m_port_map[SDW_MAX_PORTS]; enum sdw_clk_stop_mode curr_clk_stop_mode; u16 dev_num; u16 dev_num_sticky;