soundwire: Add stream configuration APIs
Add APIs for prepare, enable, disable and de-prepare stream. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>hifive-unleashed-5.1
Sanyog Kale
Vinod Koul
parent
99b8a5d608
commit
5c3eb9f7bd
|
|
@ -17,6 +17,7 @@
|
|||
*/
|
||||
int sdw_add_bus_master(struct sdw_bus *bus)
|
||||
{
|
||||
struct sdw_master_prop *prop = NULL;
|
||||
int ret;
|
||||
|
||||
if (!bus->dev) {
|
||||
|
|
@ -79,9 +80,17 @@ int sdw_add_bus_master(struct sdw_bus *bus)
|
|||
}
|
||||
|
||||
/*
|
||||
* Initialize clock values based on Master properties. The max
|
||||
* frequency is read from max_freq property. Current assumption
|
||||
* is that the bus will start at highest clock frequency when
|
||||
* powered on.
|
||||
*
|
||||
* Default active bank will be 0 as out of reset the Slaves have
|
||||
* to start with bank 0 (Table 40 of Spec)
|
||||
*/
|
||||
prop = &bus->prop;
|
||||
bus->params.max_dr_freq = prop->max_freq * SDW_DOUBLE_RATE_FACTOR;
|
||||
bus->params.curr_dr_freq = bus->params.max_dr_freq;
|
||||
bus->params.curr_bank = SDW_BANK0;
|
||||
bus->params.next_bank = SDW_BANK1;
|
||||
|
||||
|
|
|
|||
|
|
@ -1233,3 +1233,247 @@ struct sdw_dpn_prop *sdw_get_slave_dpn_prop(struct sdw_slave *slave,
|
|||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int _sdw_prepare_stream(struct sdw_stream_runtime *stream)
|
||||
{
|
||||
struct sdw_master_runtime *m_rt = stream->m_rt;
|
||||
struct sdw_bus *bus = m_rt->bus;
|
||||
struct sdw_master_prop *prop = NULL;
|
||||
struct sdw_bus_params params;
|
||||
int ret;
|
||||
|
||||
prop = &bus->prop;
|
||||
memcpy(¶ms, &bus->params, sizeof(params));
|
||||
|
||||
/* TODO: Support Asynchronous mode */
|
||||
if ((prop->max_freq % stream->params.rate) != 0) {
|
||||
dev_err(bus->dev, "Async mode not supported");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Increment cumulative bus bandwidth */
|
||||
/* TODO: Update this during Device-Device support */
|
||||
bus->params.bandwidth += m_rt->stream->params.rate *
|
||||
m_rt->ch_count * m_rt->stream->params.bps;
|
||||
|
||||
/* Program params */
|
||||
ret = sdw_program_params(bus);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "Program params failed: %d", ret);
|
||||
goto restore_params;
|
||||
}
|
||||
|
||||
ret = do_bank_switch(stream);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "Bank switch failed: %d", ret);
|
||||
goto restore_params;
|
||||
}
|
||||
|
||||
/* Prepare port(s) on the new clock configuration */
|
||||
ret = sdw_prep_deprep_ports(m_rt, true);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "Prepare port(s) failed ret = %d",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
stream->state = SDW_STREAM_PREPARED;
|
||||
|
||||
return ret;
|
||||
|
||||
restore_params:
|
||||
memcpy(&bus->params, ¶ms, sizeof(params));
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* sdw_prepare_stream() - Prepare SoundWire stream
|
||||
*
|
||||
* @stream: Soundwire stream
|
||||
*
|
||||
* Documentation/soundwire/stream.txt explains this API in detail
|
||||
*/
|
||||
int sdw_prepare_stream(struct sdw_stream_runtime *stream)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
if (!stream) {
|
||||
pr_err("SoundWire: Handle not found for stream");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
mutex_lock(&stream->m_rt->bus->bus_lock);
|
||||
|
||||
ret = _sdw_prepare_stream(stream);
|
||||
if (ret < 0)
|
||||
pr_err("Prepare for stream:%s failed: %d", stream->name, ret);
|
||||
|
||||
mutex_unlock(&stream->m_rt->bus->bus_lock);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL(sdw_prepare_stream);
|
||||
|
||||
static int _sdw_enable_stream(struct sdw_stream_runtime *stream)
|
||||
{
|
||||
struct sdw_master_runtime *m_rt = stream->m_rt;
|
||||
struct sdw_bus *bus = m_rt->bus;
|
||||
int ret;
|
||||
|
||||
/* Program params */
|
||||
ret = sdw_program_params(bus);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "Program params failed: %d", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Enable port(s) */
|
||||
ret = sdw_enable_disable_ports(m_rt, true);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "Enable port(s) failed ret: %d", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = do_bank_switch(stream);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "Bank switch failed: %d", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
stream->state = SDW_STREAM_ENABLED;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* sdw_enable_stream() - Enable SoundWire stream
|
||||
*
|
||||
* @stream: Soundwire stream
|
||||
*
|
||||
* Documentation/soundwire/stream.txt explains this API in detail
|
||||
*/
|
||||
int sdw_enable_stream(struct sdw_stream_runtime *stream)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
if (!stream) {
|
||||
pr_err("SoundWire: Handle not found for stream");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
mutex_lock(&stream->m_rt->bus->bus_lock);
|
||||
|
||||
ret = _sdw_enable_stream(stream);
|
||||
if (ret < 0)
|
||||
pr_err("Enable for stream:%s failed: %d", stream->name, ret);
|
||||
|
||||
mutex_unlock(&stream->m_rt->bus->bus_lock);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL(sdw_enable_stream);
|
||||
|
||||
static int _sdw_disable_stream(struct sdw_stream_runtime *stream)
|
||||
{
|
||||
struct sdw_master_runtime *m_rt = stream->m_rt;
|
||||
struct sdw_bus *bus = m_rt->bus;
|
||||
int ret;
|
||||
|
||||
/* Disable port(s) */
|
||||
ret = sdw_enable_disable_ports(m_rt, false);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "Disable port(s) failed: %d", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
stream->state = SDW_STREAM_DISABLED;
|
||||
|
||||
/* Program params */
|
||||
ret = sdw_program_params(bus);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "Program params failed: %d", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return do_bank_switch(stream);
|
||||
}
|
||||
|
||||
/**
|
||||
* sdw_disable_stream() - Disable SoundWire stream
|
||||
*
|
||||
* @stream: Soundwire stream
|
||||
*
|
||||
* Documentation/soundwire/stream.txt explains this API in detail
|
||||
*/
|
||||
int sdw_disable_stream(struct sdw_stream_runtime *stream)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
if (!stream) {
|
||||
pr_err("SoundWire: Handle not found for stream");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
mutex_lock(&stream->m_rt->bus->bus_lock);
|
||||
|
||||
ret = _sdw_disable_stream(stream);
|
||||
if (ret < 0)
|
||||
pr_err("Disable for stream:%s failed: %d", stream->name, ret);
|
||||
|
||||
mutex_unlock(&stream->m_rt->bus->bus_lock);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL(sdw_disable_stream);
|
||||
|
||||
static int _sdw_deprepare_stream(struct sdw_stream_runtime *stream)
|
||||
{
|
||||
struct sdw_master_runtime *m_rt = stream->m_rt;
|
||||
struct sdw_bus *bus = m_rt->bus;
|
||||
int ret = 0;
|
||||
|
||||
/* De-prepare port(s) */
|
||||
ret = sdw_prep_deprep_ports(m_rt, false);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "De-prepare port(s) failed: %d", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
stream->state = SDW_STREAM_DEPREPARED;
|
||||
|
||||
/* TODO: Update this during Device-Device support */
|
||||
bus->params.bandwidth -= m_rt->stream->params.rate *
|
||||
m_rt->ch_count * m_rt->stream->params.bps;
|
||||
|
||||
/* Program params */
|
||||
ret = sdw_program_params(bus);
|
||||
if (ret < 0) {
|
||||
dev_err(bus->dev, "Program params failed: %d", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return do_bank_switch(stream);
|
||||
}
|
||||
|
||||
/**
|
||||
* sdw_deprepare_stream() - Deprepare SoundWire stream
|
||||
*
|
||||
* @stream: Soundwire stream
|
||||
*
|
||||
* Documentation/soundwire/stream.txt explains this API in detail
|
||||
*/
|
||||
int sdw_deprepare_stream(struct sdw_stream_runtime *stream)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
if (!stream) {
|
||||
pr_err("SoundWire: Handle not found for stream");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
mutex_lock(&stream->m_rt->bus->bus_lock);
|
||||
|
||||
ret = _sdw_deprepare_stream(stream);
|
||||
if (ret < 0)
|
||||
pr_err("De-prepare for stream:%d failed: %d", ret, ret);
|
||||
|
||||
mutex_unlock(&stream->m_rt->bus->bus_lock);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL(sdw_deprepare_stream);
|
||||
|
|
|
|||
|
|
@ -791,6 +791,10 @@ int sdw_stream_remove_master(struct sdw_bus *bus,
|
|||
struct sdw_stream_runtime *stream);
|
||||
int sdw_stream_remove_slave(struct sdw_slave *slave,
|
||||
struct sdw_stream_runtime *stream);
|
||||
int sdw_prepare_stream(struct sdw_stream_runtime *stream);
|
||||
int sdw_enable_stream(struct sdw_stream_runtime *stream);
|
||||
int sdw_disable_stream(struct sdw_stream_runtime *stream);
|
||||
int sdw_deprepare_stream(struct sdw_stream_runtime *stream);
|
||||
|
||||
/* messaging and data APIs */
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue