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Commit f5a3db42 authored by Takashi Iwai's avatar Takashi Iwai Committed by Greg Kroah-Hartman
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staging: bcm2835-audio: Make single vchi handle 

The bcm2835_audio_instance object contains the array of
VCHI_SERVICE_HANDLE_T, while the code assumes and uses only the first
element explicitly.  Let's reduce to a single vchi handle for
simplifying the code.
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Tested-by: default avatarStefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 66890d53
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Inline Side-by-side
Showing with 58 additions and 112 deletions
drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
View file @ f5a3db42
......@@ -44,8 +44,7 @@
#endif
struct bcm2835_audio_instance {
unsigned int num_connections;
VCHI_SERVICE_HANDLE_T vchi_handle[VCHI_MAX_NUM_CONNECTIONS];
VCHI_SERVICE_HANDLE_T vchi_handle;
struct completion msg_avail_comp;
struct mutex vchi_mutex;
struct bcm2835_alsa_stream *alsa_stream;
......@@ -202,12 +201,12 @@ static void audio_vchi_callback(void *param,
BUG();
return;
}
if (!instance->vchi_handle[0]) {
LOG_ERR(" .. instance->vchi_handle[0] is null\n");
if (!instance->vchi_handle) {
LOG_ERR(" .. instance->vchi_handle is null\n");
BUG();
return;
}
status = vchi_msg_dequeue(instance->vchi_handle[0],
status = vchi_msg_dequeue(instance->vchi_handle,
&m, sizeof(m), &msg_len, VCHI_FLAGS_NONE);
if (m.type == VC_AUDIO_MSG_TYPE_RESULT) {
LOG_DBG(" .. instance=%p, m.type=VC_AUDIO_MSG_TYPE_RESULT, success=%d\n",
......@@ -237,102 +236,61 @@ static void audio_vchi_callback(void *param,
static struct bcm2835_audio_instance *
vc_vchi_audio_init(VCHI_INSTANCE_T vchi_instance,
VCHI_CONNECTION_T **vchi_connections,
unsigned int num_connections)
VCHI_CONNECTION_T *vchi_connection)
{
unsigned int i;
SERVICE_CREATION_T params = {
.version = VCHI_VERSION_EX(VC_AUDIOSERV_VER, VC_AUDIOSERV_MIN_VER),
.service_id = VC_AUDIO_SERVER_NAME,
.connection = vchi_connection,
.rx_fifo_size = 0,
.tx_fifo_size = 0,
.callback = audio_vchi_callback,
.want_unaligned_bulk_rx = 1, //TODO: remove VCOS_FALSE
.want_unaligned_bulk_tx = 1, //TODO: remove VCOS_FALSE
.want_crc = 0
};
struct bcm2835_audio_instance *instance;
int status;
int ret;
LOG_DBG("%s: start", __func__);
if (num_connections > VCHI_MAX_NUM_CONNECTIONS) {
LOG_ERR("%s: unsupported number of connections %u (max=%u)\n",
__func__, num_connections, VCHI_MAX_NUM_CONNECTIONS);
return ERR_PTR(-EINVAL);
}
/* Allocate memory for this instance */
instance = kzalloc(sizeof(*instance), GFP_KERNEL);
if (!instance)
return ERR_PTR(-ENOMEM);
instance->num_connections = num_connections;
/* Create a lock for exclusive, serialized VCHI connection access */
mutex_init(&instance->vchi_mutex);
/* Open the VCHI service connections */
for (i = 0; i < num_connections; i++) {
SERVICE_CREATION_T params = {
.version = VCHI_VERSION_EX(VC_AUDIOSERV_VER, VC_AUDIOSERV_MIN_VER),
.service_id = VC_AUDIO_SERVER_NAME,
.connection = vchi_connections[i],
.rx_fifo_size = 0,
.tx_fifo_size = 0,
.callback = audio_vchi_callback,
.callback_param = instance,
.want_unaligned_bulk_rx = 1, //TODO: remove VCOS_FALSE
.want_unaligned_bulk_tx = 1, //TODO: remove VCOS_FALSE
.want_crc = 0
};
LOG_DBG("%s: about to open %i\n", __func__, i);
status = vchi_service_open(vchi_instance, &params,
&instance->vchi_handle[i]);
LOG_DBG("%s: opened %i: %p=%d\n", __func__, i, instance->vchi_handle[i], status);
if (status) {
LOG_ERR("%s: failed to open VCHI service connection (status=%d)\n",
__func__, status);
ret = -EPERM;
goto err_close_services;
}
/* Finished with the service for now */
vchi_service_release(instance->vchi_handle[i]);
}
params.callback_param = instance,
LOG_DBG("%s: okay\n", __func__);
return instance;
status = vchi_service_open(vchi_instance, &params,
&instance->vchi_handle);
err_close_services:
for (i = 0; i < instance->num_connections; i++) {
LOG_ERR("%s: closing %i: %p\n", __func__, i, instance->vchi_handle[i]);
if (instance->vchi_handle[i])
vchi_service_close(instance->vchi_handle[i]);
if (status) {
LOG_ERR("%s: failed to open VCHI service connection (status=%d)\n",
__func__, status);
kfree(instance);
return ERR_PTR(-EPERM);
}
kfree(instance);
LOG_ERR("%s: error\n", __func__);
/* Finished with the service for now */
vchi_service_release(instance->vchi_handle);
return ERR_PTR(ret);
return instance;
}
static int vc_vchi_audio_deinit(struct bcm2835_audio_instance *instance)
{
unsigned int i;
if (!instance) {
LOG_ERR("%s: invalid handle %p\n", __func__, instance);
return -1;
}
int status;
LOG_DBG(" .. about to lock (%d)\n", instance->num_connections);
mutex_lock(&instance->vchi_mutex);
/* Close all VCHI service connections */
for (i = 0; i < instance->num_connections; i++) {
int status;
LOG_DBG(" .. %i:closing %p\n", i, instance->vchi_handle[i]);
vchi_service_use(instance->vchi_handle[i]);
vchi_service_use(instance->vchi_handle);
status = vchi_service_close(instance->vchi_handle[i]);
if (status) {
LOG_DBG("%s: failed to close VCHI service connection (status=%d)\n",
__func__, status);
}
status = vchi_service_close(instance->vchi_handle);
if (status) {
LOG_DBG("%s: failed to close VCHI service connection (status=%d)\n",
__func__, status);
}
mutex_unlock(&instance->vchi_mutex);
......@@ -383,19 +341,9 @@ static int bcm2835_audio_open_connection(struct bcm2835_alsa_stream *alsa_stream
(struct bcm2835_audio_instance *)alsa_stream->instance;
struct bcm2835_vchi_ctx *vhci_ctx = alsa_stream->chip->vchi_ctx;
LOG_INFO("%s: start\n", __func__);
BUG_ON(instance);
if (instance) {
LOG_ERR("%s: VCHI instance already open (%p)\n",
__func__, instance);
instance->alsa_stream = alsa_stream;
alsa_stream->instance = instance;
return 0;
}
/* Initialize an instance of the audio service */
instance = vc_vchi_audio_init(vhci_ctx->vchi_instance,
&vhci_ctx->vchi_connection, 1);
vhci_ctx->vchi_connection);
if (IS_ERR(instance)) {
LOG_ERR("%s: failed to initialize audio service\n", __func__);
......@@ -407,8 +355,6 @@ static int bcm2835_audio_open_connection(struct bcm2835_alsa_stream *alsa_stream
instance->alsa_stream = alsa_stream;
alsa_stream->instance = instance;
LOG_DBG(" success !\n");
return 0;
}
......@@ -431,12 +377,12 @@ int bcm2835_audio_open(struct bcm2835_alsa_stream *alsa_stream)
LOG_DBG(" instance (%p)\n", instance);
mutex_lock(&instance->vchi_mutex);
vchi_service_use(instance->vchi_handle[0]);
vchi_service_use(instance->vchi_handle);
m.type = VC_AUDIO_MSG_TYPE_OPEN;
/* Send the message to the videocore */
status = bcm2835_vchi_msg_queue(instance->vchi_handle[0],
status = bcm2835_vchi_msg_queue(instance->vchi_handle,
&m, sizeof(m));
if (status) {
......@@ -450,7 +396,7 @@ int bcm2835_audio_open(struct bcm2835_alsa_stream *alsa_stream)
ret = 0;
unlock:
vchi_service_release(instance->vchi_handle[0]);
vchi_service_release(instance->vchi_handle);
mutex_unlock(&instance->vchi_mutex);
free_wq:
......@@ -472,7 +418,7 @@ int bcm2835_audio_set_ctls(struct bcm2835_alsa_stream *alsa_stream)
chip->dest, chip->volume);
mutex_lock(&instance->vchi_mutex);
vchi_service_use(instance->vchi_handle[0]);
vchi_service_use(instance->vchi_handle);
instance->result = -1;
......@@ -487,7 +433,7 @@ int bcm2835_audio_set_ctls(struct bcm2835_alsa_stream *alsa_stream)
init_completion(&instance->msg_avail_comp);
/* Send the message to the videocore */
status = bcm2835_vchi_msg_queue(instance->vchi_handle[0],
status = bcm2835_vchi_msg_queue(instance->vchi_handle,
&m, sizeof(m));
if (status) {
......@@ -511,7 +457,7 @@ int bcm2835_audio_set_ctls(struct bcm2835_alsa_stream *alsa_stream)
ret = 0;
unlock:
vchi_service_release(instance->vchi_handle[0]);
vchi_service_release(instance->vchi_handle);
mutex_unlock(&instance->vchi_mutex);
return ret;
......@@ -537,7 +483,7 @@ int bcm2835_audio_set_params(struct bcm2835_alsa_stream *alsa_stream,
}
mutex_lock(&instance->vchi_mutex);
vchi_service_use(instance->vchi_handle[0]);
vchi_service_use(instance->vchi_handle);
instance->result = -1;
......@@ -550,7 +496,7 @@ int bcm2835_audio_set_params(struct bcm2835_alsa_stream *alsa_stream,
init_completion(&instance->msg_avail_comp);
/* Send the message to the videocore */
status = bcm2835_vchi_msg_queue(instance->vchi_handle[0],
status = bcm2835_vchi_msg_queue(instance->vchi_handle,
&m, sizeof(m));
if (status) {
......@@ -574,7 +520,7 @@ int bcm2835_audio_set_params(struct bcm2835_alsa_stream *alsa_stream,
ret = 0;
unlock:
vchi_service_release(instance->vchi_handle[0]);
vchi_service_release(instance->vchi_handle);
mutex_unlock(&instance->vchi_mutex);
return ret;
......@@ -588,12 +534,12 @@ static int bcm2835_audio_start_worker(struct bcm2835_alsa_stream *alsa_stream)
int ret;
mutex_lock(&instance->vchi_mutex);
vchi_service_use(instance->vchi_handle[0]);
vchi_service_use(instance->vchi_handle);
m.type = VC_AUDIO_MSG_TYPE_START;
/* Send the message to the videocore */
status = bcm2835_vchi_msg_queue(instance->vchi_handle[0],
status = bcm2835_vchi_msg_queue(instance->vchi_handle,
&m, sizeof(m));
if (status) {
......@@ -607,7 +553,7 @@ static int bcm2835_audio_start_worker(struct bcm2835_alsa_stream *alsa_stream)
ret = 0;
unlock:
vchi_service_release(instance->vchi_handle[0]);
vchi_service_release(instance->vchi_handle);
mutex_unlock(&instance->vchi_mutex);
return ret;
}
......@@ -620,13 +566,13 @@ static int bcm2835_audio_stop_worker(struct bcm2835_alsa_stream *alsa_stream)
int ret;
mutex_lock(&instance->vchi_mutex);
vchi_service_use(instance->vchi_handle[0]);
vchi_service_use(instance->vchi_handle);
m.type = VC_AUDIO_MSG_TYPE_STOP;
m.u.stop.draining = alsa_stream->draining;
/* Send the message to the videocore */
status = bcm2835_vchi_msg_queue(instance->vchi_handle[0],
status = bcm2835_vchi_msg_queue(instance->vchi_handle,
&m, sizeof(m));
if (status) {
......@@ -640,7 +586,7 @@ static int bcm2835_audio_stop_worker(struct bcm2835_alsa_stream *alsa_stream)
ret = 0;
unlock:
vchi_service_release(instance->vchi_handle[0]);
vchi_service_release(instance->vchi_handle);
mutex_unlock(&instance->vchi_mutex);
return ret;
}
......@@ -655,7 +601,7 @@ int bcm2835_audio_close(struct bcm2835_alsa_stream *alsa_stream)
my_workqueue_quit(alsa_stream);
mutex_lock(&instance->vchi_mutex);
vchi_service_use(instance->vchi_handle[0]);
vchi_service_use(instance->vchi_handle);
m.type = VC_AUDIO_MSG_TYPE_CLOSE;
......@@ -663,7 +609,7 @@ int bcm2835_audio_close(struct bcm2835_alsa_stream *alsa_stream)
init_completion(&instance->msg_avail_comp);
/* Send the message to the videocore */
status = bcm2835_vchi_msg_queue(instance->vchi_handle[0],
status = bcm2835_vchi_msg_queue(instance->vchi_handle,
&m, sizeof(m));
if (status) {
......@@ -687,7 +633,7 @@ int bcm2835_audio_close(struct bcm2835_alsa_stream *alsa_stream)
ret = 0;
unlock:
vchi_service_release(instance->vchi_handle[0]);
vchi_service_release(instance->vchi_handle);
mutex_unlock(&instance->vchi_mutex);
/* Stop the audio service */
......@@ -708,10 +654,10 @@ static int bcm2835_audio_write_worker(struct bcm2835_alsa_stream *alsa_stream,
LOG_INFO(" Writing %d bytes from %p\n", count, src);
mutex_lock(&instance->vchi_mutex);
vchi_service_use(instance->vchi_handle[0]);
vchi_service_use(instance->vchi_handle);
if (instance->peer_version == 0 &&
vchi_get_peer_version(instance->vchi_handle[0], &instance->peer_version) == 0)
vchi_get_peer_version(instance->vchi_handle, &instance->peer_version) == 0)
LOG_DBG("%s: client version %d connected\n", __func__, instance->peer_version);
m.type = VC_AUDIO_MSG_TYPE_WRITE;
......@@ -723,7 +669,7 @@ static int bcm2835_audio_write_worker(struct bcm2835_alsa_stream *alsa_stream,
m.u.write.silence = src == NULL;
/* Send the message to the videocore */
status = bcm2835_vchi_msg_queue(instance->vchi_handle[0],
status = bcm2835_vchi_msg_queue(instance->vchi_handle,
&m, sizeof(m));
if (status) {
......@@ -736,7 +682,7 @@ static int bcm2835_audio_write_worker(struct bcm2835_alsa_stream *alsa_stream,
if (!m.u.write.silence) {
if (!m.u.write.max_packet) {
/* Send the message to the videocore */
status = vchi_bulk_queue_transmit(instance->vchi_handle[0],
status = vchi_bulk_queue_transmit(instance->vchi_handle,
src, count,
0 * VCHI_FLAGS_BLOCK_UNTIL_QUEUED
+
......@@ -746,7 +692,7 @@ static int bcm2835_audio_write_worker(struct bcm2835_alsa_stream *alsa_stream,
while (count > 0) {
int bytes = min_t(int, m.u.write.max_packet, count);
status = bcm2835_vchi_msg_queue(instance->vchi_handle[0],
status = bcm2835_vchi_msg_queue(instance->vchi_handle,
src, bytes);
src = (char *)src + bytes;
count -= bytes;
......@@ -763,7 +709,7 @@ static int bcm2835_audio_write_worker(struct bcm2835_alsa_stream *alsa_stream,
ret = 0;
unlock:
vchi_service_release(instance->vchi_handle[0]);
vchi_service_release(instance->vchi_handle);
mutex_unlock(&instance->vchi_mutex);
return ret;
}
......
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