Gigabeat S: Use statically initialized channel descriptors. Also, there's no need for them to be in non-cached memory since they're only used on the AP side.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27103 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 51 insertions, 39 deletions

diff --git a/firmware/target/arm/imx31/ata-imx31.c b/firmware/target/arm/imx31/ata-imx31.c
index 4c6bebd168..6ba49cada0 100644
--- a/firmware/target/arm/imx31/ata-imx31.c
+++ b/firmware/target/arm/imx31/ata-imx31.c
@@ -251,8 +251,33 @@ static struct wakeup ata_dma_wakeup;
 /* Array of buffer descriptors for large transfers and alignnment */
 static struct buffer_descriptor ata_bda[ATA_BD_COUNT] NOCACHEBSS_ATTR;
 /* ATA channel descriptors */
-static struct channel_descriptor ata_cd_rd NOCACHEBSS_ATTR; /* read channel */
-static struct channel_descriptor ata_cd_wr NOCACHEBSS_ATTR; /* write channel */
+/* Read/write channels share buffer descriptors and callbacks */
+static void ata_dma_callback(void);
+
+static struct channel_descriptor ata_cd_rd = /* read channel */
+{
+    .bd_count = ATA_BD_COUNT,
+    .callback = ata_dma_callback,
+    .shp_addr = SDMA_PER_ADDR_ATA_RX,
+    .wml      = SDMA_ATA_WML,
+    .per_type = SDMA_PER_ATA,
+    .tran_type = SDMA_TRAN_PER_2_EMI,
+    .event_id1 = SDMA_REQ_ATA_TXFER_END,
+    .event_id2 = SDMA_REQ_ATA_RX,
+};
+
+static struct channel_descriptor ata_cd_wr = /* write channel */
+{
+    .bd_count = ATA_BD_COUNT,
+    .callback = ata_dma_callback,
+    .shp_addr = SDMA_PER_ADDR_ATA_TX,
+    .wml      = SDMA_ATA_WML,
+    .per_type = SDMA_PER_ATA,
+    .tran_type = SDMA_TRAN_EMI_2_PER,
+    .event_id1 = SDMA_REQ_ATA_TXFER_END,
+    .event_id2 = SDMA_REQ_ATA_TX,
+};
+
 /* DMA channel to be started for transfer */
 static unsigned int current_channel = 0;
 
@@ -654,25 +679,6 @@ void ata_device_init(void)
     /* Called for first time at startup */
     wakeup_init(&ata_dma_wakeup);
 
-    /* Read/write channels share buffer descriptors */
-    ata_cd_rd.bd_count = ATA_BD_COUNT;
-    ata_cd_rd.callback = ata_dma_callback;
-    ata_cd_rd.shp_addr = SDMA_PER_ADDR_ATA_RX;
-    ata_cd_rd.wml      = SDMA_ATA_WML;
-    ata_cd_rd.per_type = SDMA_PER_ATA;
-    ata_cd_rd.tran_type = SDMA_TRAN_PER_2_EMI;
-    ata_cd_rd.event_id1 = SDMA_REQ_ATA_TXFER_END;
-    ata_cd_rd.event_id2 = SDMA_REQ_ATA_RX;
-
-    ata_cd_wr.bd_count = ATA_BD_COUNT;
-    ata_cd_wr.callback = ata_dma_callback;
-    ata_cd_wr.shp_addr = SDMA_PER_ADDR_ATA_TX;
-    ata_cd_wr.wml      = SDMA_ATA_WML;
-    ata_cd_wr.per_type = SDMA_PER_ATA;
-    ata_cd_wr.tran_type = SDMA_TRAN_EMI_2_PER;
-    ata_cd_wr.event_id1 = SDMA_REQ_ATA_TXFER_END;
-    ata_cd_wr.event_id2 = SDMA_REQ_ATA_TX;
-
     if (!sdma_channel_init(ATA_DMA_CH_NUM_RD, &ata_cd_rd, ata_bda) ||
         !sdma_channel_init(ATA_DMA_CH_NUM_WR, &ata_cd_wr, ata_bda))
     {
diff --git a/firmware/target/arm/imx31/gigabeat-s/pcm-gigabeat-s.c b/firmware/target/arm/imx31/gigabeat-s/pcm-gigabeat-s.c
index f74b167400..cfd83f0794 100644
--- a/firmware/target/arm/imx31/gigabeat-s/pcm-gigabeat-s.c
+++ b/firmware/target/arm/imx31/gigabeat-s/pcm-gigabeat-s.c
@@ -33,7 +33,18 @@
 #define DMA_REC_CH_PRIORITY 6
 
 static struct buffer_descriptor dma_play_bd NOCACHEBSS_ATTR;
-static struct channel_descriptor dma_play_cd NOCACHEBSS_ATTR;
+
+static void play_dma_callback(void);
+static struct channel_descriptor dma_play_cd =
+{
+    .bd_count = 1,
+    .callback = play_dma_callback,
+    .shp_addr = SDMA_PER_ADDR_SSI2_TX1,
+    .wml      = SDMA_SSI_TXFIFO_WML*2,
+    .per_type = SDMA_PER_SSI_SHP, /* SSI2 shared with SDMA core */
+    .tran_type = SDMA_TRAN_EMI_2_PER,
+    .event_id1 = SDMA_REQ_SSI2_TX1,
+};
 
 /* The pcm locking relies on the fact the interrupt handlers run to completion
  * before lower-priority modes proceed. We don't have to touch hardware
@@ -123,14 +134,6 @@ void pcm_dma_apply_settings(void)
 void pcm_play_dma_init(void)
 {
     /* Init channel information */
-    dma_play_cd.bd_count = 1;
-    dma_play_cd.callback = play_dma_callback;
-    dma_play_cd.shp_addr = SDMA_PER_ADDR_SSI2_TX1;
-    dma_play_cd.wml      = SDMA_SSI_TXFIFO_WML*2;
-    dma_play_cd.per_type = SDMA_PER_SSI_SHP; /* SSI2 shared with SDMA core */
-    dma_play_cd.tran_type = SDMA_TRAN_EMI_2_PER;
-    dma_play_cd.event_id1 = SDMA_REQ_SSI2_TX1;
-
     sdma_channel_init(DMA_PLAY_CH_NUM, &dma_play_cd, &dma_play_bd);
     sdma_channel_set_priority(DMA_PLAY_CH_NUM, DMA_PLAY_CH_PRIORITY);
 
@@ -372,7 +375,18 @@ void * pcm_dma_addr(void *addr)
 
 #ifdef HAVE_RECORDING
 static struct buffer_descriptor dma_rec_bd NOCACHEBSS_ATTR;
-static struct channel_descriptor dma_rec_cd NOCACHEBSS_ATTR;
+
+static void rec_dma_callback(void);
+static struct channel_descriptor dma_rec_cd =
+{
+    .bd_count = 1,
+    .callback = rec_dma_callback,
+    .shp_addr = SDMA_PER_ADDR_SSI1_RX1,
+    .wml      = SDMA_SSI_RXFIFO_WML*2,
+    .per_type = SDMA_PER_SSI,
+    .tran_type = SDMA_TRAN_PER_2_EMI,
+    .event_id1 = SDMA_REQ_SSI1_RX1,
+};
 
 static struct dma_data dma_rec_data =
 {
@@ -495,14 +509,6 @@ void pcm_rec_dma_init(void)
     pcm_rec_dma_stop();
 
     /* Init channel information */
-    dma_rec_cd.bd_count = 1;
-    dma_rec_cd.callback = rec_dma_callback;
-    dma_rec_cd.shp_addr = SDMA_PER_ADDR_SSI1_RX1;
-    dma_rec_cd.wml      = SDMA_SSI_RXFIFO_WML*2;
-    dma_rec_cd.per_type = SDMA_PER_SSI;
-    dma_rec_cd.tran_type = SDMA_TRAN_PER_2_EMI;
-    dma_rec_cd.event_id1 = SDMA_REQ_SSI1_RX1;
-
     sdma_channel_init(DMA_REC_CH_NUM, &dma_rec_cd, &dma_rec_bd);
     sdma_channel_set_priority(DMA_REC_CH_NUM, DMA_REC_CH_PRIORITY);
 }