aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/arm/mach-s3c2410/include/mach/dma.h6
-rw-r--r--arch/arm/plat-s3c24xx/dma.c60
-rw-r--r--drivers/mmc/host/s3cmci.c2
-rw-r--r--sound/soc/s3c24xx/s3c24xx-pcm.c21
4 files changed, 57 insertions, 32 deletions
diff --git a/arch/arm/mach-s3c2410/include/mach/dma.h b/arch/arm/mach-s3c2410/include/mach/dma.h
index 13358ce2128..acaef6784e9 100644
--- a/arch/arm/mach-s3c2410/include/mach/dma.h
+++ b/arch/arm/mach-s3c2410/include/mach/dma.h
@@ -206,10 +206,10 @@ struct s3c2410_dma_chan {
/* channel configuration */
enum s3c2410_dmasrc source;
+ enum dma_ch req_ch;
unsigned long dev_addr;
unsigned long load_timeout;
unsigned int flags; /* channel flags */
- unsigned int hw_cfg; /* last hw config */
struct s3c24xx_dma_map *map; /* channel hw maps */
@@ -290,7 +290,7 @@ extern int s3c2410_dma_enqueue(unsigned int channel, void *id,
* configure the dma channel
*/
-extern int s3c2410_dma_config(unsigned int channel, int xferunit, int dcon);
+extern int s3c2410_dma_config(unsigned int channel, int xferunit);
/* s3c2410_dma_devconfig
*
@@ -298,7 +298,7 @@ extern int s3c2410_dma_config(unsigned int channel, int xferunit, int dcon);
*/
extern int s3c2410_dma_devconfig(int channel, enum s3c2410_dmasrc source,
- int hwcfg, unsigned long devaddr);
+ unsigned long devaddr);
/* s3c2410_dma_getposition
*
diff --git a/arch/arm/plat-s3c24xx/dma.c b/arch/arm/plat-s3c24xx/dma.c
index d3d1375d95b..dc58a0ddc9f 100644
--- a/arch/arm/plat-s3c24xx/dma.c
+++ b/arch/arm/plat-s3c24xx/dma.c
@@ -1038,14 +1038,13 @@ EXPORT_SYMBOL(s3c2410_dma_ctrl);
/* s3c2410_dma_config
*
* xfersize: size of unit in bytes (1,2,4)
- * dcon: base value of the DCONx register
*/
int s3c2410_dma_config(unsigned int channel,
- int xferunit,
- int dcon)
+ int xferunit)
{
struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
+ unsigned int dcon;
pr_debug("%s: chan=%d, xfer_unit=%d, dcon=%08x\n",
__func__, channel, xferunit, dcon);
@@ -1055,10 +1054,33 @@ int s3c2410_dma_config(unsigned int channel,
pr_debug("%s: Initial dcon is %08x\n", __func__, dcon);
- dcon |= chan->dcon & dma_sel.dcon_mask;
+ dcon = chan->dcon & dma_sel.dcon_mask;
pr_debug("%s: New dcon is %08x\n", __func__, dcon);
+ switch (chan->req_ch) {
+ case DMACH_I2S_IN:
+ case DMACH_I2S_OUT:
+ case DMACH_PCM_IN:
+ case DMACH_PCM_OUT:
+ case DMACH_MIC_IN:
+ default:
+ dcon |= S3C2410_DCON_HANDSHAKE;
+ dcon |= S3C2410_DCON_SYNC_PCLK;
+ break;
+
+ case DMACH_SDI:
+ /* note, ensure if need HANDSHAKE or not */
+ dcon |= S3C2410_DCON_SYNC_PCLK;
+ break;
+
+ case DMACH_XD0:
+ case DMACH_XD1:
+ dcon |= S3C2410_DCON_HANDSHAKE;
+ dcon |= S3C2410_DCON_SYNC_HCLK;
+ break;
+ }
+
switch (xferunit) {
case 1:
dcon |= S3C2410_DCON_BYTE;
@@ -1150,29 +1172,38 @@ EXPORT_SYMBOL(s3c2410_dma_set_buffdone_fn);
* source: S3C2410_DMASRC_HW: source is hardware
* S3C2410_DMASRC_MEM: source is memory
*
- * hwcfg: the value for xxxSTCn register,
- * bit 0: 0=increment pointer, 1=leave pointer
- * bit 1: 0=source is AHB, 1=source is APB
- *
* devaddr: physical address of the source
*/
int s3c2410_dma_devconfig(int channel,
enum s3c2410_dmasrc source,
- int hwcfg,
unsigned long devaddr)
{
struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
+ unsigned int hwcfg;
if (chan == NULL)
return -EINVAL;
- pr_debug("%s: source=%d, hwcfg=%08x, devaddr=%08lx\n",
- __func__, (int)source, hwcfg, devaddr);
+ pr_debug("%s: source=%d, devaddr=%08lx\n",
+ __func__, (int)source, devaddr);
chan->source = source;
chan->dev_addr = devaddr;
- chan->hw_cfg = hwcfg;
+
+ switch (chan->req_ch) {
+ case DMACH_XD0:
+ case DMACH_XD1:
+ hwcfg = 0; /* AHB */
+ break;
+
+ default:
+ hwcfg = S3C2410_DISRCC_APB;
+ }
+
+ /* always assume our peripheral desintation is a fixed
+ * address in memory. */
+ hwcfg |= S3C2410_DISRCC_INC;
switch (source) {
case S3C2410_DMASRC_HW:
@@ -1278,8 +1309,8 @@ static int s3c2410_dma_resume(struct sys_device *dev)
printk(KERN_INFO "dma%d: restoring configuration\n", cp->number);
- s3c2410_dma_config(no, cp->xfer_unit, cp->dcon);
- s3c2410_dma_devconfig(no, cp->source, cp->hw_cfg, cp->dev_addr);
+ s3c2410_dma_config(no, cp->xfer_unit);
+ s3c2410_dma_devconfig(no, cp->source, cp->dev_addr);
/* re-select the dma source for this channel */
@@ -1476,6 +1507,7 @@ static struct s3c2410_dma_chan *s3c2410_dma_map_channel(int channel)
found:
dmach = &s3c2410_chans[ch];
dmach->map = ch_map;
+ dmach->req_ch = channel;
dma_chan_map[channel] = dmach;
/* select the channel */
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index 2db166b7096..889f35047a5 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -789,7 +789,7 @@ static void s3cmci_dma_setup(struct s3cmci_host *host,
last_source = source;
- s3c2410_dma_devconfig(host->dma, source, 3,
+ s3c2410_dma_devconfig(host->dma, source,
host->mem->start + host->sdidata);
if (!setup_ok) {
diff --git a/sound/soc/s3c24xx/s3c24xx-pcm.c b/sound/soc/s3c24xx/s3c24xx-pcm.c
index 169ddad3157..eecfa5eba06 100644
--- a/sound/soc/s3c24xx/s3c24xx-pcm.c
+++ b/sound/soc/s3c24xx/s3c24xx-pcm.c
@@ -218,24 +218,17 @@ static int s3c24xx_pcm_prepare(struct snd_pcm_substream *substream)
* sync to pclk, half-word transfers to the IIS-FIFO. */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
s3c2410_dma_devconfig(prtd->params->channel,
- S3C2410_DMASRC_MEM, S3C2410_DISRCC_INC |
- S3C2410_DISRCC_APB, prtd->params->dma_addr);
-
- s3c2410_dma_config(prtd->params->channel,
- prtd->params->dma_size,
- S3C2410_DCON_SYNC_PCLK |
- S3C2410_DCON_HANDSHAKE);
+ S3C2410_DMASRC_MEM,
+ prtd->params->dma_addr);
} else {
- s3c2410_dma_config(prtd->params->channel,
- prtd->params->dma_size,
- S3C2410_DCON_HANDSHAKE |
- S3C2410_DCON_SYNC_PCLK);
-
s3c2410_dma_devconfig(prtd->params->channel,
- S3C2410_DMASRC_HW, 0x3,
- prtd->params->dma_addr);
+ S3C2410_DMASRC_HW,
+ prtd->params->dma_addr);
}
+ s3c2410_dma_config(prtd->params->channel,
+ prtd->params->dma_size);
+
/* flush the DMA channel */
s3c2410_dma_ctrl(prtd->params->channel, S3C2410_DMAOP_FLUSH);
prtd->dma_loaded = 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 22:35:47 +0000