[alsa-devel] [PATCH 03/15] oxfw: Split stream functionality to a new file and add a header file
Takashi Sakamoto
o-takashi at sakamocchi.jp
Tue May 13 16:27:40 CEST 2014
This is a help for works in followed patches.
And this commit remove 'fw_unit_get()/fw_unit_put()' because these
are called by helper functions in 'snd-firewire-lib'.
Signed-off-by: Takashi Sakamoto <o-takashi at sakamocchi.jp>
---
sound/firewire/oxfw/Makefile | 2 +-
sound/firewire/oxfw/oxfw.c | 136 ++++++--------------------------------
sound/firewire/oxfw/oxfw.h | 56 ++++++++++++++++
sound/firewire/oxfw/oxfw_stream.c | 92 ++++++++++++++++++++++++++
4 files changed, 168 insertions(+), 118 deletions(-)
create mode 100644 sound/firewire/oxfw/oxfw.h
create mode 100644 sound/firewire/oxfw/oxfw_stream.c
diff --git a/sound/firewire/oxfw/Makefile b/sound/firewire/oxfw/Makefile
index 9ca49c0..510c1cb 100644
--- a/sound/firewire/oxfw/Makefile
+++ b/sound/firewire/oxfw/Makefile
@@ -1,2 +1,2 @@
-snd-oxfw-objs := oxfw.o
+snd-oxfw-objs := oxfw_stream.o oxfw.o
obj-m += snd-oxfw.o
diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c
index e194f54..f393f34 100644
--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -5,22 +5,7 @@
* Licensed under the terms of the GNU General Public License, version 2.
*/
-#include <linux/device.h>
-#include <linux/firewire.h>
-#include <linux/firewire-constants.h>
-#include <linux/module.h>
-#include <linux/mod_devicetable.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <sound/control.h>
-#include <sound/core.h>
-#include <sound/initval.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include "../cmp.h"
-#include "../fcp.h"
-#include "../amdtp.h"
-#include "../lib.h"
+#include "oxfw.h"
#define OXFORD_FIRMWARE_ID_ADDRESS (CSR_REGISTER_BASE + 0x50000)
/* 0x970?vvvv or 0x971?vvvv, where vvvv = firmware version */
@@ -35,29 +20,6 @@
#define SPECIFIER_1394TA 0x00a02d
#define VERSION_AVC 0x010001
-struct device_info {
- const char *driver_name;
- const char *short_name;
- const char *long_name;
- int (*pcm_constraints)(struct snd_pcm_runtime *runtime);
- unsigned int mixer_channels;
- u8 mute_fb_id;
- u8 volume_fb_id;
-};
-
-struct snd_oxfw {
- struct snd_card *card;
- struct fw_unit *unit;
- const struct device_info *device_info;
- struct mutex mutex;
- struct cmp_connection in_conn;
- struct amdtp_stream rx_stream;
- bool mute;
- s16 volume[6];
- s16 volume_min;
- s16 volume_max;
-};
-
MODULE_DESCRIPTION("Oxford OXFW970/971 driver");
MODULE_AUTHOR("Clemens Ladisch <clemens at ladisch.de>");
MODULE_LICENSE("GPL v2");
@@ -180,23 +142,13 @@ static int oxfw_close(struct snd_pcm_substream *substream)
return 0;
}
-static void oxfw_stop_stream(struct snd_oxfw *oxfw)
-{
- if (amdtp_stream_running(&oxfw->rx_stream)) {
- amdtp_stream_stop(&oxfw->rx_stream);
- cmp_connection_break(&oxfw->in_conn);
- }
-}
-
static int oxfw_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_oxfw *oxfw = substream->private_data;
int err;
- mutex_lock(&oxfw->mutex);
- oxfw_stop_stream(oxfw);
- mutex_unlock(&oxfw->mutex);
+ snd_oxfw_stream_stop_simplex(oxfw);
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
@@ -230,9 +182,7 @@ static int oxfw_hw_free(struct snd_pcm_substream *substream)
{
struct snd_oxfw *oxfw = substream->private_data;
- mutex_lock(&oxfw->mutex);
- oxfw_stop_stream(oxfw);
- mutex_unlock(&oxfw->mutex);
+ snd_oxfw_stream_stop_simplex(oxfw);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
@@ -242,35 +192,14 @@ static int oxfw_prepare(struct snd_pcm_substream *substream)
struct snd_oxfw *oxfw = substream->private_data;
int err;
- mutex_lock(&oxfw->mutex);
-
- if (amdtp_streaming_error(&oxfw->rx_stream))
- oxfw_stop_stream(oxfw);
+ snd_oxfw_stream_stop_simplex(oxfw);
- if (!amdtp_stream_running(&oxfw->rx_stream)) {
- err = cmp_connection_establish(&oxfw->in_conn,
- amdtp_stream_get_max_payload(&oxfw->rx_stream));
- if (err < 0)
- goto err_mutex;
-
- err = amdtp_stream_start(&oxfw->rx_stream,
- oxfw->in_conn.resources.channel,
- oxfw->in_conn.speed);
- if (err < 0)
- goto err_connection;
- }
-
- mutex_unlock(&oxfw->mutex);
+ err = snd_oxfw_stream_start_simplex(oxfw);
+ if (err < 0)
+ goto end;
amdtp_stream_pcm_prepare(&oxfw->rx_stream);
-
- return 0;
-
-err_connection:
- cmp_connection_break(&oxfw->in_conn);
-err_mutex:
- mutex_unlock(&oxfw->mutex);
-
+end:
return err;
}
@@ -615,9 +544,6 @@ static void oxfw_card_free(struct snd_card *card)
{
struct snd_oxfw *oxfw = card->private_data;
- amdtp_stream_destroy(&oxfw->rx_stream);
- cmp_connection_destroy(&oxfw->in_conn);
- fw_unit_put(oxfw->unit);
mutex_destroy(&oxfw->mutex);
}
@@ -635,23 +561,13 @@ static int oxfw_probe(struct fw_unit *unit,
if (err < 0)
return err;
+ card->private_free = oxfw_card_free;
oxfw = card->private_data;
oxfw->card = card;
mutex_init(&oxfw->mutex);
- oxfw->unit = fw_unit_get(unit);
+ oxfw->unit = unit;
oxfw->device_info = (const struct device_info *)id->driver_data;
- err = cmp_connection_init(&oxfw->in_conn, unit, CMP_INPUT, 0);
- if (err < 0)
- goto err_unit;
-
- err = amdtp_stream_init(&oxfw->rx_stream, unit, AMDTP_OUT_STREAM,
- CIP_NONBLOCKING);
- if (err < 0)
- goto err_connection;
-
- card->private_free = oxfw_card_free;
-
strcpy(card->driver, oxfw->device_info->driver_name);
strcpy(card->shortname, oxfw->device_info->short_name);
firmware = oxfw_read_firmware_version(unit);
@@ -671,19 +587,18 @@ static int oxfw_probe(struct fw_unit *unit,
if (err < 0)
goto error;
- err = snd_card_register(card);
+ err = snd_oxfw_stream_init_simplex(oxfw);
if (err < 0)
goto error;
+ err = snd_card_register(card);
+ if (err < 0) {
+ snd_oxfw_stream_destroy_simplex(oxfw);
+ goto error;
+ }
dev_set_drvdata(&unit->device, oxfw);
return 0;
-
-err_connection:
- cmp_connection_destroy(&oxfw->in_conn);
-err_unit:
- fw_unit_put(oxfw->unit);
- mutex_destroy(&oxfw->mutex);
error:
snd_card_free(card);
return err;
@@ -694,29 +609,16 @@ static void oxfw_bus_reset(struct fw_unit *unit)
struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device);
fcp_bus_reset(oxfw->unit);
-
- if (cmp_connection_update(&oxfw->in_conn) < 0) {
- amdtp_stream_pcm_abort(&oxfw->rx_stream);
- mutex_lock(&oxfw->mutex);
- oxfw_stop_stream(oxfw);
- mutex_unlock(&oxfw->mutex);
- return;
- }
-
- amdtp_stream_update(&oxfw->rx_stream);
+ snd_oxfw_stream_update_simplex(oxfw);
}
static void oxfw_remove(struct fw_unit *unit)
{
struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device);
- amdtp_stream_pcm_abort(&oxfw->rx_stream);
- snd_card_disconnect(oxfw->card);
-
- mutex_lock(&oxfw->mutex);
- oxfw_stop_stream(oxfw);
- mutex_unlock(&oxfw->mutex);
+ snd_oxfw_stream_destroy_simplex(oxfw);
+ snd_card_disconnect(oxfw->card);
snd_card_free_when_closed(oxfw->card);
}
diff --git a/sound/firewire/oxfw/oxfw.h b/sound/firewire/oxfw/oxfw.h
new file mode 100644
index 0000000..e5836e0
--- /dev/null
+++ b/sound/firewire/oxfw/oxfw.h
@@ -0,0 +1,56 @@
+/*
+ * oxfw.h - a part of driver for OXFW970/971 based devices
+ *
+ * Copyright (c) Clemens Ladisch <clemens at ladisch.de>
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include <linux/device.h>
+#include <linux/firewire.h>
+#include <linux/firewire-constants.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+
+#include <sound/control.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include "../lib.h"
+#include "../fcp.h"
+#include "../packets-buffer.h"
+#include "../iso-resources.h"
+#include "../amdtp.h"
+#include "../cmp.h"
+
+struct device_info {
+ const char *driver_name;
+ const char *short_name;
+ const char *long_name;
+ int (*pcm_constraints)(struct snd_pcm_runtime *runtime);
+ unsigned int mixer_channels;
+ u8 mute_fb_id;
+ u8 volume_fb_id;
+};
+
+struct snd_oxfw {
+ struct snd_card *card;
+ struct fw_unit *unit;
+ const struct device_info *device_info;
+ struct mutex mutex;
+ struct cmp_connection in_conn;
+ struct amdtp_stream rx_stream;
+ bool mute;
+ s16 volume[6];
+ s16 volume_min;
+ s16 volume_max;
+};
+
+int snd_oxfw_stream_init_simplex(struct snd_oxfw *oxfw);
+int snd_oxfw_stream_start_simplex(struct snd_oxfw *oxfw);
+void snd_oxfw_stream_stop_simplex(struct snd_oxfw *oxfw);
+void snd_oxfw_stream_destroy_simplex(struct snd_oxfw *oxfw);
+void snd_oxfw_stream_update_simplex(struct snd_oxfw *oxfw);
diff --git a/sound/firewire/oxfw/oxfw_stream.c b/sound/firewire/oxfw/oxfw_stream.c
new file mode 100644
index 0000000..59861b2
--- /dev/null
+++ b/sound/firewire/oxfw/oxfw_stream.c
@@ -0,0 +1,92 @@
+/*
+ * oxfw_stream.c - a part of driver for OXFW970/971 based devices
+ *
+ * Copyright (c) 2014 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "oxfw.h"
+
+int snd_oxfw_stream_init_simplex(struct snd_oxfw *oxfw)
+{
+ int err;
+
+ err = cmp_connection_init(&oxfw->in_conn, oxfw->unit,
+ CMP_INPUT, 0);
+ if (err < 0)
+ goto end;
+
+ err = amdtp_stream_init(&oxfw->rx_stream, oxfw->unit,
+ AMDTP_OUT_STREAM, CIP_NONBLOCKING);
+ if (err < 0) {
+ amdtp_stream_destroy(&oxfw->rx_stream);
+ cmp_connection_destroy(&oxfw->in_conn);
+ }
+end:
+ return err;
+}
+
+static int stop_stream(struct snd_oxfw *oxfw)
+{
+ amdtp_stream_pcm_abort(&oxfw->rx_stream);
+ amdtp_stream_stop(&oxfw->rx_stream);
+ cmp_connection_break(&oxfw->in_conn);
+}
+
+int snd_oxfw_stream_start_simplex(struct snd_oxfw *oxfw)
+{
+ int err = 0;
+
+ mutex_lock(&oxfw->mutex);
+
+ if (amdtp_streaming_error(&oxfw->rx_stream))
+ stop_stream(oxfw);
+
+ if (amdtp_stream_running(&oxfw->rx_stream))
+ goto end;
+
+ err = cmp_connection_establish(&oxfw->in_conn,
+ amdtp_stream_get_max_payload(&oxfw->rx_stream));
+ if (err < 0)
+ goto end;
+
+ err = amdtp_stream_start(&oxfw->rx_stream,
+ oxfw->in_conn.resources.channel,
+ oxfw->in_conn.speed);
+ if (err < 0)
+ stop_stream(oxfw);
+end:
+ mutex_unlock(&oxfw->mutex);
+ return err;
+}
+
+void snd_oxfw_stream_stop_simplex(struct snd_oxfw *oxfw)
+{
+ mutex_lock(&oxfw->mutex);
+ stop_stream(oxfw);
+ mutex_unlock(&oxfw->mutex);
+}
+
+void snd_oxfw_stream_destroy_simplex(struct snd_oxfw *oxfw)
+{
+ mutex_lock(&oxfw->mutex);
+
+ stop_stream(oxfw);
+
+ amdtp_stream_destroy(&oxfw->rx_stream);
+ cmp_connection_destroy(&oxfw->in_conn);
+
+ mutex_unlock(&oxfw->mutex);
+}
+
+void snd_oxfw_stream_update_simplex(struct snd_oxfw *oxfw)
+{
+ if (cmp_connection_update(&oxfw->in_conn) < 0) {
+ mutex_lock(&oxfw->mutex);
+ stop_stream(oxfw);
+ mutex_unlock(&oxfw->mutex);
+ } else {
+ amdtp_stream_update(&oxfw->rx_stream);
+ }
+}
--
1.8.3.2
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