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| author | Vinod Koul <vkoul@kernel.org> | 2019-08-13 09:35:46 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-09-04 14:57:19 +0530 |
| commit | c7578c1d6285252d862b324f6fc26dd5adc8517c (patch) | |
| tree | df8b857395a35ee11673115f6ea70c26bcefdb75 | |
| parent | a2e484585ad306aa8ac84140ef54d722ac8f45df (diff) | |
| download | linux-c7578c1d6285252d862b324f6fc26dd5adc8517c.tar.gz | |
soundwire: Add compute_params callback
This callback allows masters to compute the bus parameters required. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20190813083550.5877-2-srinivas.kandagatla@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/soundwire/stream.c | 10 | ||||
| -rw-r--r-- | include/linux/soundwire/sdw.h | 2 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index 8d6c13528b68..0bc1b4dbd14b 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -1485,6 +1485,16 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream) bus->params.bandwidth += m_rt->stream->params.rate * m_rt->ch_count * m_rt->stream->params.bps; + /* Compute params */ + if (bus->compute_params) { + ret = bus->compute_params(bus); + if (ret < 0) { + dev_err(bus->dev, "Compute params failed: %d", + ret); + return ret; + } + } + /* Program params */ ret = sdw_program_params(bus); if (ret < 0) { diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index be9fe08d4e9c..9932eabcb581 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -728,6 +728,7 @@ struct sdw_master_ops { * Bit set implies used number, bit clear implies unused number. * @bus_lock: bus lock * @msg_lock: message lock + * @compute_params: points to Bus resource management implementation * @ops: Master callback ops * @port_ops: Master port callback ops * @params: Current bus parameters @@ -750,6 +751,7 @@ struct sdw_bus { DECLARE_BITMAP(assigned, SDW_MAX_DEVICES); struct mutex bus_lock; struct mutex msg_lock; + int (*compute_params)(struct sdw_bus *bus); const struct sdw_master_ops *ops; const struct sdw_master_port_ops *port_ops; struct sdw_bus_params params; |