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path: root/drivers/soundwire/stream.c
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Diffstat (limited to 'drivers/soundwire/stream.c')
-rw-r--r--drivers/soundwire/stream.c488
1 files changed, 359 insertions, 129 deletions
diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
index e5c7e1ef6318..bd879b1a76c8 100644
--- a/drivers/soundwire/stream.c
+++ b/drivers/soundwire/stream.c
@@ -626,9 +626,10 @@ static int sdw_program_params(struct sdw_bus *bus)
return ret;
}
-static int sdw_bank_switch(struct sdw_bus *bus)
+static int sdw_bank_switch(struct sdw_bus *bus, int m_rt_count)
{
int col_index, row_index;
+ bool multi_link;
struct sdw_msg *wr_msg;
u8 *wbuf = NULL;
int ret = 0;
@@ -638,6 +639,8 @@ static int sdw_bank_switch(struct sdw_bus *bus)
if (!wr_msg)
return -ENOMEM;
+ bus->defer_msg.msg = wr_msg;
+
wbuf = kzalloc(sizeof(*wbuf), GFP_KERNEL);
if (!wbuf) {
ret = -ENOMEM;
@@ -658,17 +661,29 @@ static int sdw_bank_switch(struct sdw_bus *bus)
SDW_MSG_FLAG_WRITE, wbuf);
wr_msg->ssp_sync = true;
- ret = sdw_transfer(bus, wr_msg);
+ /*
+ * Set the multi_link flag only when both the hardware supports
+ * and there is a stream handled by multiple masters
+ */
+ multi_link = bus->multi_link && (m_rt_count > 1);
+
+ if (multi_link)
+ ret = sdw_transfer_defer(bus, wr_msg, &bus->defer_msg);
+ else
+ ret = sdw_transfer(bus, wr_msg);
+
if (ret < 0) {
dev_err(bus->dev, "Slave frame_ctrl reg write failed");
goto error;
}
- kfree(wr_msg);
- kfree(wbuf);
- bus->defer_msg.msg = NULL;
- bus->params.curr_bank = !bus->params.curr_bank;
- bus->params.next_bank = !bus->params.next_bank;
+ if (!multi_link) {
+ kfree(wr_msg);
+ kfree(wbuf);
+ bus->defer_msg.msg = NULL;
+ bus->params.curr_bank = !bus->params.curr_bank;
+ bus->params.next_bank = !bus->params.next_bank;
+ }
return 0;
@@ -679,37 +694,138 @@ error_1:
return ret;
}
+/**
+ * sdw_ml_sync_bank_switch: Multilink register bank switch
+ *
+ * @bus: SDW bus instance
+ *
+ * Caller function should free the buffers on error
+ */
+static int sdw_ml_sync_bank_switch(struct sdw_bus *bus)
+{
+ unsigned long time_left;
+
+ if (!bus->multi_link)
+ return 0;
+
+ /* Wait for completion of transfer */
+ time_left = wait_for_completion_timeout(&bus->defer_msg.complete,
+ bus->bank_switch_timeout);
+
+ if (!time_left) {
+ dev_err(bus->dev, "Controller Timed out on bank switch");
+ return -ETIMEDOUT;
+ }
+
+ bus->params.curr_bank = !bus->params.curr_bank;
+ bus->params.next_bank = !bus->params.next_bank;
+
+ if (bus->defer_msg.msg) {
+ kfree(bus->defer_msg.msg->buf);
+ kfree(bus->defer_msg.msg);
+ }
+
+ return 0;
+}
+
static int do_bank_switch(struct sdw_stream_runtime *stream)
{
- struct sdw_master_runtime *m_rt = stream->m_rt;
+ struct sdw_master_runtime *m_rt = NULL;
const struct sdw_master_ops *ops;
- struct sdw_bus *bus = m_rt->bus;
+ struct sdw_bus *bus = NULL;
+ bool multi_link = false;
int ret = 0;
- ops = bus->ops;
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+ ops = bus->ops;
+
+ if (bus->multi_link) {
+ multi_link = true;
+ mutex_lock(&bus->msg_lock);
+ }
+
+ /* Pre-bank switch */
+ if (ops->pre_bank_switch) {
+ ret = ops->pre_bank_switch(bus);
+ if (ret < 0) {
+ dev_err(bus->dev,
+ "Pre bank switch op failed: %d", ret);
+ goto msg_unlock;
+ }
+ }
- /* Pre-bank switch */
- if (ops->pre_bank_switch) {
- ret = ops->pre_bank_switch(bus);
+ /*
+ * Perform Bank switch operation.
+ * For multi link cases, the actual bank switch is
+ * synchronized across all Masters and happens later as a
+ * part of post_bank_switch ops.
+ */
+ ret = sdw_bank_switch(bus, stream->m_rt_count);
if (ret < 0) {
- dev_err(bus->dev, "Pre bank switch op failed: %d", ret);
- return ret;
+ dev_err(bus->dev, "Bank switch failed: %d", ret);
+ goto error;
+
}
}
- /* Bank switch */
- ret = sdw_bank_switch(bus);
- if (ret < 0) {
- dev_err(bus->dev, "Bank switch failed: %d", ret);
- return ret;
- }
+ /*
+ * For multi link cases, it is expected that the bank switch is
+ * triggered by the post_bank_switch for the first Master in the list
+ * and for the other Masters the post_bank_switch() should return doing
+ * nothing.
+ */
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+ ops = bus->ops;
+
+ /* Post-bank switch */
+ if (ops->post_bank_switch) {
+ ret = ops->post_bank_switch(bus);
+ if (ret < 0) {
+ dev_err(bus->dev,
+ "Post bank switch op failed: %d", ret);
+ goto error;
+ }
+ } else if (bus->multi_link && stream->m_rt_count > 1) {
+ dev_err(bus->dev,
+ "Post bank switch ops not implemented");
+ goto error;
+ }
+
+ /* Set the bank switch timeout to default, if not set */
+ if (!bus->bank_switch_timeout)
+ bus->bank_switch_timeout = DEFAULT_BANK_SWITCH_TIMEOUT;
- /* Post-bank switch */
- if (ops->post_bank_switch) {
- ret = ops->post_bank_switch(bus);
+ /* Check if bank switch was successful */
+ ret = sdw_ml_sync_bank_switch(bus);
if (ret < 0) {
dev_err(bus->dev,
- "Post bank switch op failed: %d", ret);
+ "multi link bank switch failed: %d", ret);
+ goto error;
+ }
+
+ mutex_unlock(&bus->msg_lock);
+ }
+
+ return ret;
+
+error:
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+
+ bus = m_rt->bus;
+
+ kfree(bus->defer_msg.msg->buf);
+ kfree(bus->defer_msg.msg);
+ }
+
+msg_unlock:
+
+ if (multi_link) {
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+ if (mutex_is_locked(&bus->msg_lock))
+ mutex_unlock(&bus->msg_lock);
}
}
@@ -747,12 +863,29 @@ struct sdw_stream_runtime *sdw_alloc_stream(char *stream_name)
return NULL;
stream->name = stream_name;
+ INIT_LIST_HEAD(&stream->master_list);
stream->state = SDW_STREAM_ALLOCATED;
+ stream->m_rt_count = 0;
return stream;
}
EXPORT_SYMBOL(sdw_alloc_stream);
+static struct sdw_master_runtime
+*sdw_find_master_rt(struct sdw_bus *bus,
+ struct sdw_stream_runtime *stream)
+{
+ struct sdw_master_runtime *m_rt = NULL;
+
+ /* Retrieve Bus handle if already available */
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ if (m_rt->bus == bus)
+ return m_rt;
+ }
+
+ return NULL;
+}
+
/**
* sdw_alloc_master_rt() - Allocates and initialize Master runtime handle
*
@@ -769,12 +902,11 @@ static struct sdw_master_runtime
{
struct sdw_master_runtime *m_rt;
- m_rt = stream->m_rt;
-
/*
* check if Master is already allocated (as a result of Slave adding
* it first), if so skip allocation and go to configure
*/
+ m_rt = sdw_find_master_rt(bus, stream);
if (m_rt)
goto stream_config;
@@ -785,7 +917,7 @@ static struct sdw_master_runtime
/* Initialization of Master runtime handle */
INIT_LIST_HEAD(&m_rt->port_list);
INIT_LIST_HEAD(&m_rt->slave_rt_list);
- stream->m_rt = m_rt;
+ list_add_tail(&m_rt->stream_node, &stream->master_list);
list_add_tail(&m_rt->bus_node, &bus->m_rt_list);
@@ -843,17 +975,21 @@ static void sdw_slave_port_release(struct sdw_bus *bus,
struct sdw_stream_runtime *stream)
{
struct sdw_port_runtime *p_rt, *_p_rt;
- struct sdw_master_runtime *m_rt = stream->m_rt;
+ struct sdw_master_runtime *m_rt;
struct sdw_slave_runtime *s_rt;
- list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
- if (s_rt->slave != slave)
- continue;
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
- list_for_each_entry_safe(p_rt, _p_rt,
- &s_rt->port_list, port_node) {
- list_del(&p_rt->port_node);
- kfree(p_rt);
+ if (s_rt->slave != slave)
+ continue;
+
+ list_for_each_entry_safe(p_rt, _p_rt,
+ &s_rt->port_list, port_node) {
+
+ list_del(&p_rt->port_node);
+ kfree(p_rt);
+ }
}
}
}
@@ -870,16 +1006,18 @@ static void sdw_release_slave_stream(struct sdw_slave *slave,
struct sdw_stream_runtime *stream)
{
struct sdw_slave_runtime *s_rt, *_s_rt;
- struct sdw_master_runtime *m_rt = stream->m_rt;
+ struct sdw_master_runtime *m_rt;
- /* Retrieve Slave runtime handle */
- list_for_each_entry_safe(s_rt, _s_rt,
- &m_rt->slave_rt_list, m_rt_node) {
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ /* Retrieve Slave runtime handle */
+ list_for_each_entry_safe(s_rt, _s_rt,
+ &m_rt->slave_rt_list, m_rt_node) {
- if (s_rt->slave == slave) {
- list_del(&s_rt->m_rt_node);
- kfree(s_rt);
- return;
+ if (s_rt->slave == slave) {
+ list_del(&s_rt->m_rt_node);
+ kfree(s_rt);
+ return;
+ }
}
}
}
@@ -887,6 +1025,7 @@ static void sdw_release_slave_stream(struct sdw_slave *slave,
/**
* sdw_release_master_stream() - Free Master runtime handle
*
+ * @m_rt: Master runtime node
* @stream: Stream runtime handle.
*
* This function is to be called with bus_lock held
@@ -894,9 +1033,9 @@ static void sdw_release_slave_stream(struct sdw_slave *slave,
* handle. If this is called first then sdw_release_slave_stream() will have
* no effect as Slave(s) runtime handle would already be freed up.
*/
-static void sdw_release_master_stream(struct sdw_stream_runtime *stream)
+static void sdw_release_master_stream(struct sdw_master_runtime *m_rt,
+ struct sdw_stream_runtime *stream)
{
- struct sdw_master_runtime *m_rt = stream->m_rt;
struct sdw_slave_runtime *s_rt, *_s_rt;
list_for_each_entry_safe(s_rt, _s_rt, &m_rt->slave_rt_list, m_rt_node) {
@@ -904,7 +1043,9 @@ static void sdw_release_master_stream(struct sdw_stream_runtime *stream)
sdw_release_slave_stream(s_rt->slave, stream);
}
+ list_del(&m_rt->stream_node);
list_del(&m_rt->bus_node);
+ kfree(m_rt);
}
/**
@@ -918,13 +1059,23 @@ static void sdw_release_master_stream(struct sdw_stream_runtime *stream)
int sdw_stream_remove_master(struct sdw_bus *bus,
struct sdw_stream_runtime *stream)
{
+ struct sdw_master_runtime *m_rt, *_m_rt;
+
mutex_lock(&bus->bus_lock);
- sdw_release_master_stream(stream);
- sdw_master_port_release(bus, stream->m_rt);
- stream->state = SDW_STREAM_RELEASED;
- kfree(stream->m_rt);
- stream->m_rt = NULL;
+ list_for_each_entry_safe(m_rt, _m_rt,
+ &stream->master_list, stream_node) {
+
+ if (m_rt->bus != bus)
+ continue;
+
+ sdw_master_port_release(bus, m_rt);
+ sdw_release_master_stream(m_rt, stream);
+ stream->m_rt_count--;
+ }
+
+ if (list_empty(&stream->master_list))
+ stream->state = SDW_STREAM_RELEASED;
mutex_unlock(&bus->bus_lock);
@@ -1107,6 +1258,18 @@ int sdw_stream_add_master(struct sdw_bus *bus,
mutex_lock(&bus->bus_lock);
+ /*
+ * For multi link streams, add the second master only if
+ * the bus supports it.
+ * Check if bus->multi_link is set
+ */
+ if (!bus->multi_link && stream->m_rt_count > 0) {
+ dev_err(bus->dev,
+ "Multilink not supported, link %d", bus->link_id);
+ ret = -EINVAL;
+ goto unlock;
+ }
+
m_rt = sdw_alloc_master_rt(bus, stream_config, stream);
if (!m_rt) {
dev_err(bus->dev,
@@ -1124,10 +1287,12 @@ int sdw_stream_add_master(struct sdw_bus *bus,
if (ret)
goto stream_error;
+ stream->m_rt_count++;
+
goto unlock;
stream_error:
- sdw_release_master_stream(stream);
+ sdw_release_master_stream(m_rt, stream);
unlock:
mutex_unlock(&bus->bus_lock);
return ret;
@@ -1205,7 +1370,7 @@ stream_error:
* we hit error so cleanup the stream, release all Slave(s) and
* Master runtime
*/
- sdw_release_master_stream(stream);
+ sdw_release_master_stream(m_rt, stream);
error:
mutex_unlock(&slave->bus->bus_lock);
return ret;
@@ -1245,33 +1410,82 @@ struct sdw_dpn_prop *sdw_get_slave_dpn_prop(struct sdw_slave *slave,
return NULL;
}
+/**
+ * sdw_acquire_bus_lock: Acquire bus lock for all Master runtime(s)
+ *
+ * @stream: SoundWire stream
+ *
+ * Acquire bus_lock for each of the master runtime(m_rt) part of this
+ * stream to reconfigure the bus.
+ * NOTE: This function is called from SoundWire stream ops and is
+ * expected that a global lock is held before acquiring bus_lock.
+ */
+static void sdw_acquire_bus_lock(struct sdw_stream_runtime *stream)
+{
+ struct sdw_master_runtime *m_rt = NULL;
+ struct sdw_bus *bus = NULL;
+
+ /* Iterate for all Master(s) in Master list */
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+
+ mutex_lock(&bus->bus_lock);
+ }
+}
+
+/**
+ * sdw_release_bus_lock: Release bus lock for all Master runtime(s)
+ *
+ * @stream: SoundWire stream
+ *
+ * Release the previously held bus_lock after reconfiguring the bus.
+ * NOTE: This function is called from SoundWire stream ops and is
+ * expected that a global lock is held before releasing bus_lock.
+ */
+static void sdw_release_bus_lock(struct sdw_stream_runtime *stream)
+{
+ struct sdw_master_runtime *m_rt = NULL;
+ struct sdw_bus *bus = NULL;
+
+ /* Iterate for all Master(s) in Master list */
+ list_for_each_entry_reverse(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+ mutex_unlock(&bus->bus_lock);
+ }
+}
+
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_runtime *m_rt = NULL;
+ struct sdw_bus *bus = NULL;
struct sdw_master_prop *prop = NULL;
struct sdw_bus_params params;
int ret;
- prop = &bus->prop;
- memcpy(&params, &bus->params, sizeof(params));
+ /* Prepare Master(s) and Slave(s) port(s) associated with stream */
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+ prop = &bus->prop;
+ memcpy(&params, &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;
- }
+ /* 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;
+ /* 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;
+ }
- /* 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);
@@ -1280,12 +1494,16 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream)
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;
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+
+ /* 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;
@@ -1313,35 +1531,40 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream)
return -EINVAL;
}
- mutex_lock(&stream->m_rt->bus->bus_lock);
+ sdw_acquire_bus_lock(stream);
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);
+ sdw_release_bus_lock(stream);
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;
+ struct sdw_master_runtime *m_rt = NULL;
+ struct sdw_bus *bus = NULL;
int ret;
- /* Program params */
- ret = sdw_program_params(bus);
- if (ret < 0) {
- dev_err(bus->dev, "Program params failed: %d", ret);
- return ret;
- }
+ /* Enable Master(s) and Slave(s) port(s) associated with stream */
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
- /* 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;
+ /* 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);
@@ -1370,37 +1593,42 @@ int sdw_enable_stream(struct sdw_stream_runtime *stream)
return -EINVAL;
}
- mutex_lock(&stream->m_rt->bus->bus_lock);
+ sdw_acquire_bus_lock(stream);
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);
+ sdw_release_bus_lock(stream);
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;
+ struct sdw_master_runtime *m_rt = NULL;
+ struct sdw_bus *bus = NULL;
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;
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+ /* 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;
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+ /* 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);
@@ -1422,43 +1650,46 @@ int sdw_disable_stream(struct sdw_stream_runtime *stream)
return -EINVAL;
}
- mutex_lock(&stream->m_rt->bus->bus_lock);
+ sdw_acquire_bus_lock(stream);
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);
+ sdw_release_bus_lock(stream);
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;
+ struct sdw_master_runtime *m_rt = NULL;
+ struct sdw_bus *bus = NULL;
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;
- }
+ list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+ bus = m_rt->bus;
+ /* 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;
- /* 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;
+ }
- /* Program params */
- ret = sdw_program_params(bus);
- if (ret < 0) {
- dev_err(bus->dev, "Program params failed: %d", ret);
- return ret;
}
+ stream->state = SDW_STREAM_DEPREPARED;
return do_bank_switch(stream);
}
@@ -1478,13 +1709,12 @@ int sdw_deprepare_stream(struct sdw_stream_runtime *stream)
return -EINVAL;
}
- mutex_lock(&stream->m_rt->bus->bus_lock);
-
+ sdw_acquire_bus_lock(stream);
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);
+ sdw_release_bus_lock(stream);
return ret;
}
EXPORT_SYMBOL(sdw_deprepare_stream);