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[v4,1/5] soundwire: add static port mapping support

Message ID 20210315165650.13392-2-srinivas.kandagatla@linaro.org
State Accepted
Commit f4022062e5417ab7228e95aec1a8687059a19db7
Headers show
Series [v4,1/5] soundwire: add static port mapping support | expand

Commit Message

Srinivas Kandagatla March 15, 2021, 4:56 p.m. UTC 
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(+)
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Patch

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;