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authorKrzysztof Helt <krzysztof.h1@wp.pl>2006-08-21 19:27:35 +0200
committerJaroslav Kysela <perex@suse.cz>2006-09-23 10:42:15 +0200
commitc27354460b1e0cbcd9dfc9232a76bd56c46dce89 (patch)
tree3c0de67af75b0c95093b6d0956c6d9b338c9cd1e /sound/sparc/dbri.c
parente96224ae974844d3f4e84f927ca4b17f1a2079a3 (diff)
downloadlinux-linaro-c27354460b1e0cbcd9dfc9232a76bd56c46dce89.tar.gz
[ALSA] sparc dbri: removal of dri_desc struct
The structure is in big part redudant. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/sparc/dbri.c')
-rw-r--r--sound/sparc/dbri.c40
1 files changed, 17 insertions, 23 deletions
diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index 405c603717b..0b8545ad3e9 100644
--- a/sound/sparc/dbri.c
+++ b/sound/sparc/dbri.c
@@ -250,6 +250,7 @@ static struct {
#define DBRI_NO_STREAMS 2
/* One transmit/receive descriptor */
+/* When ba != 0 descriptor is used */
struct dbri_mem {
volatile __u32 word1;
__u32 ba; /* Transmit/Receive Buffer Address */
@@ -282,12 +283,6 @@ struct dbri_pipe {
volatile __u32 *recv_fixed_ptr; /* Ptr to receive fixed data */
};
-struct dbri_desc {
- int inuse; /* Boolean flag */
- int next; /* Index of next desc, or -1 */
- unsigned int len;
-};
-
/* Per stream (playback or record) information */
struct dbri_streaminfo {
struct snd_pcm_substream *substream;
@@ -317,7 +312,7 @@ struct snd_dbri {
int wait_ackd; /* sequence of command buffers acknowledged */
struct dbri_pipe pipes[DBRI_NO_PIPES]; /* DBRI's 32 data pipes */
- struct dbri_desc descs[DBRI_NO_DESCS];
+ int next_desc[DBRI_NO_DESCS]; /* Index of next desc, or -1 */
int chi_in_pipe;
int chi_out_pipe;
@@ -803,8 +798,8 @@ static void reset_pipe(struct snd_dbri * dbri, int pipe)
desc = dbri->pipes[pipe].first_desc;
while (desc != -1) {
- dbri->descs[desc].inuse = 0;
- desc = dbri->descs[desc].next;
+ dbri->dma->desc[desc].nda = dbri->dma->desc[desc].ba = 0;
+ desc = dbri->next_desc[desc];
}
dbri->pipes[pipe].desc = -1;
@@ -1093,7 +1088,7 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period
int mylen;
for (; desc < DBRI_NO_DESCS; desc++) {
- if (!dbri->descs[desc].inuse)
+ if (!dbri->dma->desc[desc].ba)
break;
}
if (desc == DBRI_NO_DESCS) {
@@ -1110,19 +1105,16 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period
mylen = period;
}
- dbri->descs[desc].inuse = 1;
- dbri->descs[desc].next = -1;
+ dbri->next_desc[desc] = -1;
dbri->dma->desc[desc].ba = dvma_buffer;
dbri->dma->desc[desc].nda = 0;
if (streamno == DBRI_PLAY) {
- dbri->descs[desc].len = mylen;
dbri->dma->desc[desc].word1 = DBRI_TD_CNT(mylen);
dbri->dma->desc[desc].word4 = 0;
if (first_desc != -1)
dbri->dma->desc[desc].word1 |= DBRI_TD_M;
} else {
- dbri->descs[desc].len = 0;
dbri->dma->desc[desc].word1 = 0;
dbri->dma->desc[desc].word4 =
DBRI_RD_B | DBRI_RD_BCNT(mylen);
@@ -1131,7 +1123,7 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period
if (first_desc == -1) {
first_desc = desc;
} else {
- dbri->descs[last_desc].next = desc;
+ dbri->next_desc[last_desc] = desc;
dbri->dma->desc[last_desc].nda =
dbri->dma_dvma + dbri_dma_off(desc, desc);
}
@@ -1154,7 +1146,7 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period
dbri->pipes[info->pipe].first_desc = first_desc;
dbri->pipes[info->pipe].desc = first_desc;
- for (desc = first_desc; desc != -1; desc = dbri->descs[desc].next) {
+ for (desc = first_desc; desc != -1; desc = dbri->next_desc[desc]) {
dprintk(D_DESC, "DESC %d: %08x %08x %08x %08x\n",
desc,
dbri->dma->desc[desc].word1,
@@ -1747,6 +1739,7 @@ static void transmission_complete_intr(struct snd_dbri * dbri, int pipe)
struct dbri_streaminfo *info;
int td;
int status;
+ int len;
info = &dbri->stream_info[DBRI_PLAY];
@@ -1765,11 +1758,12 @@ static void transmission_complete_intr(struct snd_dbri * dbri, int pipe)
dprintk(D_INT, "TD %d, status 0x%02x\n", td, status);
dbri->dma->desc[td].word4 = 0; /* Reset it for next time. */
- info->offset += dbri->descs[td].len;
- info->left -= dbri->descs[td].len;
+ len = DBRI_RD_CNT(dbri->dma->desc[td].word1);
+ info->offset += len;
+ info->left -= len;
/* On the last TD, transmit them all again. */
- if (dbri->descs[td].next == -1) {
+ if (dbri->next_desc[td] == -1) {
if (info->left > 0) {
printk(KERN_WARNING
"%d bytes left after last transfer.\n",
@@ -1779,7 +1773,7 @@ static void transmission_complete_intr(struct snd_dbri * dbri, int pipe)
tasklet_schedule(&xmit_descs_task);
}
- td = dbri->descs[td].next;
+ td = dbri->next_desc[td];
dbri->pipes[pipe].desc = td;
}
@@ -1803,8 +1797,8 @@ static void reception_complete_intr(struct snd_dbri * dbri, int pipe)
return;
}
- dbri->descs[rd].inuse = 0;
- dbri->pipes[pipe].desc = dbri->descs[rd].next;
+ dbri->dma->desc[rd].ba = 0;
+ dbri->pipes[pipe].desc = dbri->next_desc[rd];
status = dbri->dma->desc[rd].word1;
dbri->dma->desc[rd].word1 = 0; /* Reset it for next time. */
@@ -1818,7 +1812,7 @@ static void reception_complete_intr(struct snd_dbri * dbri, int pipe)
rd, DBRI_RD_STATUS(status), DBRI_RD_CNT(status));
/* On the last TD, transmit them all again. */
- if (dbri->descs[rd].next == -1) {
+ if (dbri->next_desc[rd] == -1) {
if (info->left > info->size) {
printk(KERN_WARNING
"%d bytes recorded in %d size buffer.\n",