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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2018-12-11 19:17:30 +0900
committerTakashi Iwai <tiwai@suse.de>2018-12-11 14:56:20 +0100
commit3c3b892b3735edcc9e0be0aa129c72613e3f156e (patch)
tree1cec4e0a5d49534d57c30f3d9788125966e75228 /sound/firewire
parent72f10f08b6e95cfeb7cad9ebd165d5cca771e0e7 (diff)
downloadlinux-stericsson-3c3b892b3735edcc9e0be0aa129c72613e3f156e.tar.gz
ALSA: fireface: share helper function to get current sampling rate and clock source
As long as investigating packet dumps from Fireface 400/800, bits on status registers for clock synchronization are the same. This commit moves a parser for a register of clock configuration to obsolete model-specific operations. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/fireface/ff-pcm.c2
-rw-r--r--sound/firewire/fireface/ff-protocol-ff400.c60
-rw-r--r--sound/firewire/fireface/ff-stream.c2
-rw-r--r--sound/firewire/fireface/ff-transaction.c59
-rw-r--r--sound/firewire/fireface/ff.h4
5 files changed, 63 insertions, 64 deletions
diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c
index bf47f9ec8703..63b0be6f05e8 100644
--- a/sound/firewire/fireface/ff-pcm.c
+++ b/sound/firewire/fireface/ff-pcm.c
@@ -141,7 +141,7 @@ static int pcm_open(struct snd_pcm_substream *substream)
if (err < 0)
goto release_lock;
- err = ff->spec->protocol->get_clock(ff, &rate, &src);
+ err = snd_ff_transaction_get_clock(ff, &rate, &src);
if (err < 0)
goto release_lock;
diff --git a/sound/firewire/fireface/ff-protocol-ff400.c b/sound/firewire/fireface/ff-protocol-ff400.c
index 31c381dcb452..d2fbb0382223 100644
--- a/sound/firewire/fireface/ff-protocol-ff400.c
+++ b/sound/firewire/fireface/ff-protocol-ff400.c
@@ -19,65 +19,6 @@
#define FF400_MIDI_RX_PORT_0 0x000080180000ull
#define FF400_MIDI_RX_PORT_1 0x000080190000ull
-static int ff400_get_clock(struct snd_ff *ff, unsigned int *rate,
- enum snd_ff_clock_src *src)
-{
- __le32 reg;
- u32 data;
- int err;
-
- err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
- SND_FF_REG_CLOCK_CONFIG, &reg, sizeof(reg), 0);
- if (err < 0)
- return err;
- data = le32_to_cpu(reg);
-
- /* Calculate sampling rate. */
- switch ((data >> 1) & 0x03) {
- case 0x01:
- *rate = 32000;
- break;
- case 0x00:
- *rate = 44100;
- break;
- case 0x03:
- *rate = 48000;
- break;
- case 0x02:
- default:
- return -EIO;
- }
-
- if (data & 0x08)
- *rate *= 2;
- else if (data & 0x10)
- *rate *= 4;
-
- /* Calculate source of clock. */
- if (data & 0x01) {
- *src = SND_FF_CLOCK_SRC_INTERNAL;
- } else {
- /* TODO: 0x00, 0x01, 0x02, 0x06, 0x07? */
- switch ((data >> 10) & 0x07) {
- case 0x03:
- *src = SND_FF_CLOCK_SRC_SPDIF;
- break;
- case 0x04:
- *src = SND_FF_CLOCK_SRC_WORD;
- break;
- case 0x05:
- *src = SND_FF_CLOCK_SRC_LTC;
- break;
- case 0x00:
- default:
- *src = SND_FF_CLOCK_SRC_ADAT;
- break;
- }
- }
-
- return 0;
-}
-
static int ff400_begin_session(struct snd_ff *ff, unsigned int rate)
{
__le32 reg;
@@ -169,7 +110,6 @@ static int ff400_switch_fetching_mode(struct snd_ff *ff, bool enable)
}
const struct snd_ff_protocol snd_ff_protocol_ff400 = {
- .get_clock = ff400_get_clock,
.begin_session = ff400_begin_session,
.finish_session = ff400_finish_session,
.switch_fetching_mode = ff400_switch_fetching_mode,
diff --git a/sound/firewire/fireface/ff-stream.c b/sound/firewire/fireface/ff-stream.c
index 78880922120e..59ca2e84d41c 100644
--- a/sound/firewire/fireface/ff-stream.c
+++ b/sound/firewire/fireface/ff-stream.c
@@ -149,7 +149,7 @@ int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate)
if (ff->substreams_counter == 0)
return 0;
- err = ff->spec->protocol->get_clock(ff, &curr_rate, &src);
+ err = snd_ff_transaction_get_clock(ff, &curr_rate, &src);
if (err < 0)
return err;
if (curr_rate != rate ||
diff --git a/sound/firewire/fireface/ff-transaction.c b/sound/firewire/fireface/ff-transaction.c
index 332b29f8ed75..1dad51da13e0 100644
--- a/sound/firewire/fireface/ff-transaction.c
+++ b/sound/firewire/fireface/ff-transaction.c
@@ -8,6 +8,65 @@
#include "ff.h"
+int snd_ff_transaction_get_clock(struct snd_ff *ff, unsigned int *rate,
+ enum snd_ff_clock_src *src)
+{
+ __le32 reg;
+ u32 data;
+ int err;
+
+ err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
+ SND_FF_REG_CLOCK_CONFIG, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+ data = le32_to_cpu(reg);
+
+ /* Calculate sampling rate. */
+ switch ((data >> 1) & 0x03) {
+ case 0x01:
+ *rate = 32000;
+ break;
+ case 0x00:
+ *rate = 44100;
+ break;
+ case 0x03:
+ *rate = 48000;
+ break;
+ case 0x02:
+ default:
+ return -EIO;
+ }
+
+ if (data & 0x08)
+ *rate *= 2;
+ else if (data & 0x10)
+ *rate *= 4;
+
+ /* Calculate source of clock. */
+ if (data & 0x01) {
+ *src = SND_FF_CLOCK_SRC_INTERNAL;
+ } else {
+ /* TODO: 0x00, 0x01, 0x02, 0x06, 0x07? */
+ switch ((data >> 10) & 0x07) {
+ case 0x03:
+ *src = SND_FF_CLOCK_SRC_SPDIF;
+ break;
+ case 0x04:
+ *src = SND_FF_CLOCK_SRC_WORD;
+ break;
+ case 0x05:
+ *src = SND_FF_CLOCK_SRC_LTC;
+ break;
+ case 0x00:
+ default:
+ *src = SND_FF_CLOCK_SRC_ADAT;
+ break;
+ }
+ }
+
+ return 0;
+}
+
static void finish_transmit_midi_msg(struct snd_ff *ff, unsigned int port,
int rcode)
{
diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h
index 6dc36a2623b3..cdb1326f65b7 100644
--- a/sound/firewire/fireface/ff.h
+++ b/sound/firewire/fireface/ff.h
@@ -101,8 +101,6 @@ enum snd_ff_clock_src {
};
struct snd_ff_protocol {
- int (*get_clock)(struct snd_ff *ff, unsigned int *rate,
- enum snd_ff_clock_src *src);
int (*begin_session)(struct snd_ff *ff, unsigned int rate);
void (*finish_session)(struct snd_ff *ff);
int (*switch_fetching_mode)(struct snd_ff *ff, bool enable);
@@ -114,6 +112,8 @@ struct snd_ff_protocol {
extern const struct snd_ff_protocol snd_ff_protocol_ff400;
+int snd_ff_transaction_get_clock(struct snd_ff *ff, unsigned int *rate,
+ enum snd_ff_clock_src *src);
int snd_ff_transaction_register(struct snd_ff *ff);
int snd_ff_transaction_reregister(struct snd_ff *ff);
void snd_ff_transaction_unregister(struct snd_ff *ff);