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Diffstat (limited to 'arch/arm/mach-davinci/dma.c')
-rw-r--r--arch/arm/mach-davinci/dma.c62
1 files changed, 50 insertions, 12 deletions
diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c
index d33827aadda7..2ede598b77dd 100644
--- a/arch/arm/mach-davinci/dma.c
+++ b/arch/arm/mach-davinci/dma.c
@@ -99,8 +99,6 @@
#define EDMA_MAX_DMACH 64
#define EDMA_MAX_PARAMENTRY 512
-#define EDMA_MAX_CC 2
-
/*****************************************************************************/
@@ -207,6 +205,18 @@ static inline void edma_parm_or(unsigned ctlr, int offset, int param_no,
edma_or(ctlr, EDMA_PARM + offset + (param_no << 5), or);
}
+static inline void set_bits(int offset, int len, unsigned long *p)
+{
+ for (; len > 0; len--)
+ set_bit(offset + (len - 1), p);
+}
+
+static inline void clear_bits(int offset, int len, unsigned long *p)
+{
+ for (; len > 0; len--)
+ clear_bit(offset + (len - 1), p);
+}
+
/*****************************************************************************/
/* actual number of DMA channels and slots on this silicon */
@@ -1376,11 +1386,13 @@ EXPORT_SYMBOL(edma_clear_event);
static int __init edma_probe(struct platform_device *pdev)
{
- struct edma_soc_info *info = pdev->dev.platform_data;
+ struct edma_soc_info **info = pdev->dev.platform_data;
const s8 (*queue_priority_mapping)[2];
const s8 (*queue_tc_mapping)[2];
- int i, j, found = 0;
+ int i, j, off, ln, found = 0;
int status = -1;
+ const s16 (*rsv_chans)[2];
+ const s16 (*rsv_slots)[2];
int irq[EDMA_MAX_CC] = {0, 0};
int err_irq[EDMA_MAX_CC] = {0, 0};
struct resource *r[EDMA_MAX_CC] = {NULL};
@@ -1395,7 +1407,7 @@ static int __init edma_probe(struct platform_device *pdev)
sprintf(res_name, "edma_cc%d", j);
r[j] = platform_get_resource_byname(pdev, IORESOURCE_MEM,
res_name);
- if (!r[j]) {
+ if (!r[j] || !info[j]) {
if (found)
break;
else
@@ -1426,13 +1438,14 @@ static int __init edma_probe(struct platform_device *pdev)
}
memset(edma_cc[j], 0, sizeof(struct edma));
- edma_cc[j]->num_channels = min_t(unsigned, info[j].n_channel,
+ edma_cc[j]->num_channels = min_t(unsigned, info[j]->n_channel,
EDMA_MAX_DMACH);
- edma_cc[j]->num_slots = min_t(unsigned, info[j].n_slot,
+ edma_cc[j]->num_slots = min_t(unsigned, info[j]->n_slot,
EDMA_MAX_PARAMENTRY);
- edma_cc[j]->num_cc = min_t(unsigned, info[j].n_cc, EDMA_MAX_CC);
+ edma_cc[j]->num_cc = min_t(unsigned, info[j]->n_cc,
+ EDMA_MAX_CC);
- edma_cc[j]->default_queue = info[j].default_queue;
+ edma_cc[j]->default_queue = info[j]->default_queue;
if (!edma_cc[j]->default_queue)
edma_cc[j]->default_queue = EVENTQ_1;
@@ -1447,6 +1460,31 @@ static int __init edma_probe(struct platform_device *pdev)
memset(edma_cc[j]->edma_unused, 0xff,
sizeof(edma_cc[j]->edma_unused));
+ if (info[j]->rsv) {
+
+ /* Clear the reserved channels in unused list */
+ rsv_chans = info[j]->rsv->rsv_chans;
+ if (rsv_chans) {
+ for (i = 0; rsv_chans[i][0] != -1; i++) {
+ off = rsv_chans[i][0];
+ ln = rsv_chans[i][1];
+ clear_bits(off, ln,
+ edma_cc[j]->edma_unused);
+ }
+ }
+
+ /* Set the reserved slots in inuse list */
+ rsv_slots = info[j]->rsv->rsv_slots;
+ if (rsv_slots) {
+ for (i = 0; rsv_slots[i][0] != -1; i++) {
+ off = rsv_slots[i][0];
+ ln = rsv_slots[i][1];
+ set_bits(off, ln,
+ edma_cc[j]->edma_inuse);
+ }
+ }
+ }
+
sprintf(irq_name, "edma%d", j);
irq[j] = platform_get_irq_byname(pdev, irq_name);
edma_cc[j]->irq_res_start = irq[j];
@@ -1476,8 +1514,8 @@ static int __init edma_probe(struct platform_device *pdev)
for (i = 0; i < edma_cc[j]->num_channels; i++)
map_dmach_queue(j, i, EVENTQ_1);
- queue_tc_mapping = info[j].queue_tc_mapping;
- queue_priority_mapping = info[j].queue_priority_mapping;
+ queue_tc_mapping = info[j]->queue_tc_mapping;
+ queue_priority_mapping = info[j]->queue_priority_mapping;
/* Event queue to TC mapping */
for (i = 0; queue_tc_mapping[i][0] != -1; i++)
@@ -1496,7 +1534,7 @@ static int __init edma_probe(struct platform_device *pdev)
if (edma_read(j, EDMA_CCCFG) & CHMAP_EXIST)
map_dmach_param(j);
- for (i = 0; i < info[j].n_region; i++) {
+ for (i = 0; i < info[j]->n_region; i++) {
edma_write_array2(j, EDMA_DRAE, i, 0, 0x0);
edma_write_array2(j, EDMA_DRAE, i, 1, 0x0);
edma_write_array(j, EDMA_QRAE, i, 0x0);