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-rw-r--r--drivers/dma/sirf-dma.c423
1 files changed, 334 insertions, 89 deletions
diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c
index a1afda43b8ef..8c5186cc9f63 100644
--- a/drivers/dma/sirf-dma.c
+++ b/drivers/dma/sirf-dma.c
@@ -23,8 +23,13 @@
#include "dmaengine.h"
+#define SIRFSOC_DMA_VER_A7V1 1
+#define SIRFSOC_DMA_VER_A7V2 2
+#define SIRFSOC_DMA_VER_A6 4
+
#define SIRFSOC_DMA_DESCRIPTORS 16
#define SIRFSOC_DMA_CHANNELS 16
+#define SIRFSOC_DMA_TABLE_NUM 256
#define SIRFSOC_DMA_CH_ADDR 0x00
#define SIRFSOC_DMA_CH_XLEN 0x04
@@ -35,15 +40,44 @@
#define SIRFSOC_DMA_CH_VALID 0x140
#define SIRFSOC_DMA_CH_INT 0x144
#define SIRFSOC_DMA_INT_EN 0x148
-#define SIRFSOC_DMA_INT_EN_CLR 0x14C
+#define SIRFSOC_DMA_INT_EN_CLR 0x14C
#define SIRFSOC_DMA_CH_LOOP_CTRL 0x150
-#define SIRFSOC_DMA_CH_LOOP_CTRL_CLR 0x15C
+#define SIRFSOC_DMA_CH_LOOP_CTRL_CLR 0x154
+#define SIRFSOC_DMA_WIDTH_ATLAS7 0x10
+#define SIRFSOC_DMA_VALID_ATLAS7 0x14
+#define SIRFSOC_DMA_INT_ATLAS7 0x18
+#define SIRFSOC_DMA_INT_EN_ATLAS7 0x1c
+#define SIRFSOC_DMA_LOOP_CTRL_ATLAS7 0x20
+#define SIRFSOC_DMA_CUR_DATA_ADDR 0x34
+#define SIRFSOC_DMA_MUL_ATLAS7 0x38
+#define SIRFSOC_DMA_CH_LOOP_CTRL_ATLAS7 0x158
+#define SIRFSOC_DMA_CH_LOOP_CTRL_CLR_ATLAS7 0x15C
+#define SIRFSOC_DMA_IOBG_SCMD_EN 0x800
+#define SIRFSOC_DMA_EARLY_RESP_SET 0x818
+#define SIRFSOC_DMA_EARLY_RESP_CLR 0x81C
#define SIRFSOC_DMA_MODE_CTRL_BIT 4
#define SIRFSOC_DMA_DIR_CTRL_BIT 5
+#define SIRFSOC_DMA_MODE_CTRL_BIT_ATLAS7 2
+#define SIRFSOC_DMA_CHAIN_CTRL_BIT_ATLAS7 3
+#define SIRFSOC_DMA_DIR_CTRL_BIT_ATLAS7 4
+#define SIRFSOC_DMA_TAB_NUM_ATLAS7 7
+#define SIRFSOC_DMA_CHAIN_INT_BIT_ATLAS7 5
+#define SIRFSOC_DMA_CHAIN_FLAG_SHIFT_ATLAS7 25
+#define SIRFSOC_DMA_CHAIN_ADDR_SHIFT 32
+
+#define SIRFSOC_DMA_INT_FINI_INT_ATLAS7 BIT(0)
+#define SIRFSOC_DMA_INT_CNT_INT_ATLAS7 BIT(1)
+#define SIRFSOC_DMA_INT_PAU_INT_ATLAS7 BIT(2)
+#define SIRFSOC_DMA_INT_LOOP_INT_ATLAS7 BIT(3)
+#define SIRFSOC_DMA_INT_INV_INT_ATLAS7 BIT(4)
+#define SIRFSOC_DMA_INT_END_INT_ATLAS7 BIT(5)
+#define SIRFSOC_DMA_INT_ALL_ATLAS7 0x3F
/* xlen and dma_width register is in 4 bytes boundary */
#define SIRFSOC_DMA_WORD_LEN 4
+#define SIRFSOC_DMA_XLEN_MAX_V1 0x800
+#define SIRFSOC_DMA_XLEN_MAX_V2 0x1000
struct sirfsoc_dma_desc {
struct dma_async_tx_descriptor desc;
@@ -56,7 +90,9 @@ struct sirfsoc_dma_desc {
int width; /* DMA width */
int dir;
bool cyclic; /* is loop DMA? */
+ bool chain; /* is chain DMA? */
u32 addr; /* DMA buffer address */
+ u64 chain_table[SIRFSOC_DMA_TABLE_NUM]; /* chain tbl */
};
struct sirfsoc_dma_chan {
@@ -87,10 +123,25 @@ struct sirfsoc_dma {
void __iomem *base;
int irq;
struct clk *clk;
- bool is_marco;
+ int type;
+ void (*exec_desc)(struct sirfsoc_dma_desc *sdesc,
+ int cid, int burst_mode, void __iomem *base);
struct sirfsoc_dma_regs regs_save;
};
+struct sirfsoc_dmadata {
+ void (*exec)(struct sirfsoc_dma_desc *sdesc,
+ int cid, int burst_mode, void __iomem *base);
+ int type;
+};
+
+enum sirfsoc_dma_chain_flag {
+ SIRFSOC_DMA_CHAIN_NORMAL = 0x01,
+ SIRFSOC_DMA_CHAIN_PAUSE = 0x02,
+ SIRFSOC_DMA_CHAIN_LOOP = 0x03,
+ SIRFSOC_DMA_CHAIN_END = 0x04
+};
+
#define DRV_NAME "sirfsoc_dma"
static int sirfsoc_dma_runtime_suspend(struct device *dev);
@@ -109,48 +160,105 @@ static inline struct sirfsoc_dma *dma_chan_to_sirfsoc_dma(struct dma_chan *c)
return container_of(schan, struct sirfsoc_dma, channels[c->chan_id]);
}
+static void sirfsoc_dma_execute_hw_a7v2(struct sirfsoc_dma_desc *sdesc,
+ int cid, int burst_mode, void __iomem *base)
+{
+ if (sdesc->chain) {
+ /* DMA v2 HW chain mode */
+ writel_relaxed((sdesc->dir << SIRFSOC_DMA_DIR_CTRL_BIT_ATLAS7) |
+ (sdesc->chain <<
+ SIRFSOC_DMA_CHAIN_CTRL_BIT_ATLAS7) |
+ (0x8 << SIRFSOC_DMA_TAB_NUM_ATLAS7) | 0x3,
+ base + SIRFSOC_DMA_CH_CTRL);
+ } else {
+ /* DMA v2 legacy mode */
+ writel_relaxed(sdesc->xlen, base + SIRFSOC_DMA_CH_XLEN);
+ writel_relaxed(sdesc->ylen, base + SIRFSOC_DMA_CH_YLEN);
+ writel_relaxed(sdesc->width, base + SIRFSOC_DMA_WIDTH_ATLAS7);
+ writel_relaxed((sdesc->width*((sdesc->ylen+1)>>1)),
+ base + SIRFSOC_DMA_MUL_ATLAS7);
+ writel_relaxed((sdesc->dir << SIRFSOC_DMA_DIR_CTRL_BIT_ATLAS7) |
+ (sdesc->chain <<
+ SIRFSOC_DMA_CHAIN_CTRL_BIT_ATLAS7) |
+ 0x3, base + SIRFSOC_DMA_CH_CTRL);
+ }
+ writel_relaxed(sdesc->chain ? SIRFSOC_DMA_INT_END_INT_ATLAS7 :
+ (SIRFSOC_DMA_INT_FINI_INT_ATLAS7 |
+ SIRFSOC_DMA_INT_LOOP_INT_ATLAS7),
+ base + SIRFSOC_DMA_INT_EN_ATLAS7);
+ writel(sdesc->addr, base + SIRFSOC_DMA_CH_ADDR);
+ if (sdesc->cyclic)
+ writel(0x10001, base + SIRFSOC_DMA_LOOP_CTRL_ATLAS7);
+}
+
+static void sirfsoc_dma_execute_hw_a7v1(struct sirfsoc_dma_desc *sdesc,
+ int cid, int burst_mode, void __iomem *base)
+{
+ writel_relaxed(1, base + SIRFSOC_DMA_IOBG_SCMD_EN);
+ writel_relaxed((1 << cid), base + SIRFSOC_DMA_EARLY_RESP_SET);
+ writel_relaxed(sdesc->width, base + SIRFSOC_DMA_WIDTH_0 + cid * 4);
+ writel_relaxed(cid | (burst_mode << SIRFSOC_DMA_MODE_CTRL_BIT) |
+ (sdesc->dir << SIRFSOC_DMA_DIR_CTRL_BIT),
+ base + cid * 0x10 + SIRFSOC_DMA_CH_CTRL);
+ writel_relaxed(sdesc->xlen, base + cid * 0x10 + SIRFSOC_DMA_CH_XLEN);
+ writel_relaxed(sdesc->ylen, base + cid * 0x10 + SIRFSOC_DMA_CH_YLEN);
+ writel_relaxed(readl_relaxed(base + SIRFSOC_DMA_INT_EN) |
+ (1 << cid), base + SIRFSOC_DMA_INT_EN);
+ writel(sdesc->addr >> 2, base + cid * 0x10 + SIRFSOC_DMA_CH_ADDR);
+ if (sdesc->cyclic) {
+ writel((1 << cid) | 1 << (cid + 16) |
+ readl_relaxed(base + SIRFSOC_DMA_CH_LOOP_CTRL_ATLAS7),
+ base + SIRFSOC_DMA_CH_LOOP_CTRL_ATLAS7);
+ }
+
+}
+
+static void sirfsoc_dma_execute_hw_a6(struct sirfsoc_dma_desc *sdesc,
+ int cid, int burst_mode, void __iomem *base)
+{
+ writel_relaxed(sdesc->width, base + SIRFSOC_DMA_WIDTH_0 + cid * 4);
+ writel_relaxed(cid | (burst_mode << SIRFSOC_DMA_MODE_CTRL_BIT) |
+ (sdesc->dir << SIRFSOC_DMA_DIR_CTRL_BIT),
+ base + cid * 0x10 + SIRFSOC_DMA_CH_CTRL);
+ writel_relaxed(sdesc->xlen, base + cid * 0x10 + SIRFSOC_DMA_CH_XLEN);
+ writel_relaxed(sdesc->ylen, base + cid * 0x10 + SIRFSOC_DMA_CH_YLEN);
+ writel_relaxed(readl_relaxed(base + SIRFSOC_DMA_INT_EN) |
+ (1 << cid), base + SIRFSOC_DMA_INT_EN);
+ writel(sdesc->addr >> 2, base + cid * 0x10 + SIRFSOC_DMA_CH_ADDR);
+ if (sdesc->cyclic) {
+ writel((1 << cid) | 1 << (cid + 16) |
+ readl_relaxed(base + SIRFSOC_DMA_CH_LOOP_CTRL),
+ base + SIRFSOC_DMA_CH_LOOP_CTRL);
+ }
+
+}
+
/* Execute all queued DMA descriptors */
static void sirfsoc_dma_execute(struct sirfsoc_dma_chan *schan)
{
struct sirfsoc_dma *sdma = dma_chan_to_sirfsoc_dma(&schan->chan);
int cid = schan->chan.chan_id;
struct sirfsoc_dma_desc *sdesc = NULL;
+ void __iomem *base;
/*
* lock has been held by functions calling this, so we don't hold
* lock again
*/
-
+ base = sdma->base;
sdesc = list_first_entry(&schan->queued, struct sirfsoc_dma_desc,
- node);
+ node);
/* Move the first queued descriptor to active list */
list_move_tail(&sdesc->node, &schan->active);
- /* Start the DMA transfer */
- writel_relaxed(sdesc->width, sdma->base + SIRFSOC_DMA_WIDTH_0 +
- cid * 4);
- writel_relaxed(cid | (schan->mode << SIRFSOC_DMA_MODE_CTRL_BIT) |
- (sdesc->dir << SIRFSOC_DMA_DIR_CTRL_BIT),
- sdma->base + cid * 0x10 + SIRFSOC_DMA_CH_CTRL);
- writel_relaxed(sdesc->xlen, sdma->base + cid * 0x10 +
- SIRFSOC_DMA_CH_XLEN);
- writel_relaxed(sdesc->ylen, sdma->base + cid * 0x10 +
- SIRFSOC_DMA_CH_YLEN);
- writel_relaxed(readl_relaxed(sdma->base + SIRFSOC_DMA_INT_EN) |
- (1 << cid), sdma->base + SIRFSOC_DMA_INT_EN);
+ if (sdma->type == SIRFSOC_DMA_VER_A7V2)
+ cid = 0;
- /*
- * writel has an implict memory write barrier to make sure data is
- * flushed into memory before starting DMA
- */
- writel(sdesc->addr >> 2, sdma->base + cid * 0x10 + SIRFSOC_DMA_CH_ADDR);
+ /* Start the DMA transfer */
+ sdma->exec_desc(sdesc, cid, schan->mode, base);
- if (sdesc->cyclic) {
- writel((1 << cid) | 1 << (cid + 16) |
- readl_relaxed(sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL),
- sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
+ if (sdesc->cyclic)
schan->happened_cyclic = schan->completed_cyclic = 0;
- }
}
/* Interrupt handler */
@@ -160,27 +268,65 @@ static irqreturn_t sirfsoc_dma_irq(int irq, void *data)
struct sirfsoc_dma_chan *schan;
struct sirfsoc_dma_desc *sdesc = NULL;
u32 is;
+ bool chain;
int ch;
+ void __iomem *reg;
+
+ switch (sdma->type) {
+ case SIRFSOC_DMA_VER_A6:
+ case SIRFSOC_DMA_VER_A7V1:
+ is = readl(sdma->base + SIRFSOC_DMA_CH_INT);
+ reg = sdma->base + SIRFSOC_DMA_CH_INT;
+ while ((ch = fls(is) - 1) >= 0) {
+ is &= ~(1 << ch);
+ writel_relaxed(1 << ch, reg);
+ schan = &sdma->channels[ch];
+ spin_lock(&schan->lock);
+ sdesc = list_first_entry(&schan->active,
+ struct sirfsoc_dma_desc, node);
+ if (!sdesc->cyclic) {
+ /* Execute queued descriptors */
+ list_splice_tail_init(&schan->active,
+ &schan->completed);
+ dma_cookie_complete(&sdesc->desc);
+ if (!list_empty(&schan->queued))
+ sirfsoc_dma_execute(schan);
+ } else
+ schan->happened_cyclic++;
+ spin_unlock(&schan->lock);
+ }
+ break;
- is = readl(sdma->base + SIRFSOC_DMA_CH_INT);
- while ((ch = fls(is) - 1) >= 0) {
- is &= ~(1 << ch);
- writel_relaxed(1 << ch, sdma->base + SIRFSOC_DMA_CH_INT);
- schan = &sdma->channels[ch];
+ case SIRFSOC_DMA_VER_A7V2:
+ is = readl(sdma->base + SIRFSOC_DMA_INT_ATLAS7);
+ reg = sdma->base + SIRFSOC_DMA_INT_ATLAS7;
+ writel_relaxed(SIRFSOC_DMA_INT_ALL_ATLAS7, reg);
+ schan = &sdma->channels[0];
spin_lock(&schan->lock);
-
- sdesc = list_first_entry(&schan->active, struct sirfsoc_dma_desc,
- node);
+ sdesc = list_first_entry(&schan->active,
+ struct sirfsoc_dma_desc, node);
if (!sdesc->cyclic) {
- /* Execute queued descriptors */
- list_splice_tail_init(&schan->active, &schan->completed);
- if (!list_empty(&schan->queued))
- sirfsoc_dma_execute(schan);
- } else
+ chain = sdesc->chain;
+ if ((chain && (is & SIRFSOC_DMA_INT_END_INT_ATLAS7)) ||
+ (!chain &&
+ (is & SIRFSOC_DMA_INT_FINI_INT_ATLAS7))) {
+ /* Execute queued descriptors */
+ list_splice_tail_init(&schan->active,
+ &schan->completed);
+ dma_cookie_complete(&sdesc->desc);
+ if (!list_empty(&schan->queued))
+ sirfsoc_dma_execute(schan);
+ }
+ } else if (sdesc->cyclic && (is &
+ SIRFSOC_DMA_INT_LOOP_INT_ATLAS7))
schan->happened_cyclic++;
spin_unlock(&schan->lock);
+ break;
+
+ default:
+ break;
}
/* Schedule tasklet */
@@ -227,16 +373,15 @@ static void sirfsoc_dma_process_completed(struct sirfsoc_dma *sdma)
schan->chan.completed_cookie = last_cookie;
spin_unlock_irqrestore(&schan->lock, flags);
} else {
- /* for cyclic channel, desc is always in active list */
- sdesc = list_first_entry(&schan->active, struct sirfsoc_dma_desc,
- node);
-
- if (!sdesc || (sdesc && !sdesc->cyclic)) {
- /* without active cyclic DMA */
+ if (list_empty(&schan->active)) {
spin_unlock_irqrestore(&schan->lock, flags);
continue;
}
+ /* for cyclic channel, desc is always in active list */
+ sdesc = list_first_entry(&schan->active,
+ struct sirfsoc_dma_desc, node);
+
/* cyclic DMA */
happened_cyclic = schan->happened_cyclic;
spin_unlock_irqrestore(&schan->lock, flags);
@@ -307,20 +452,32 @@ static int sirfsoc_dma_terminate_all(struct dma_chan *chan)
spin_lock_irqsave(&schan->lock, flags);
- if (!sdma->is_marco) {
- writel_relaxed(readl_relaxed(sdma->base + SIRFSOC_DMA_INT_EN) &
- ~(1 << cid), sdma->base + SIRFSOC_DMA_INT_EN);
- writel_relaxed(readl_relaxed(sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL)
- & ~((1 << cid) | 1 << (cid + 16)),
- sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
- } else {
+ switch (sdma->type) {
+ case SIRFSOC_DMA_VER_A7V1:
writel_relaxed(1 << cid, sdma->base + SIRFSOC_DMA_INT_EN_CLR);
writel_relaxed((1 << cid) | 1 << (cid + 16),
- sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL_CLR);
+ sdma->base +
+ SIRFSOC_DMA_CH_LOOP_CTRL_CLR_ATLAS7);
+ writel_relaxed(1 << cid, sdma->base + SIRFSOC_DMA_CH_VALID);
+ break;
+ case SIRFSOC_DMA_VER_A7V2:
+ writel_relaxed(0, sdma->base + SIRFSOC_DMA_INT_EN_ATLAS7);
+ writel_relaxed(0, sdma->base + SIRFSOC_DMA_LOOP_CTRL_ATLAS7);
+ writel_relaxed(0, sdma->base + SIRFSOC_DMA_VALID_ATLAS7);
+ break;
+ case SIRFSOC_DMA_VER_A6:
+ writel_relaxed(readl_relaxed(sdma->base + SIRFSOC_DMA_INT_EN) &
+ ~(1 << cid), sdma->base + SIRFSOC_DMA_INT_EN);
+ writel_relaxed(readl_relaxed(sdma->base +
+ SIRFSOC_DMA_CH_LOOP_CTRL) &
+ ~((1 << cid) | 1 << (cid + 16)),
+ sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
+ writel_relaxed(1 << cid, sdma->base + SIRFSOC_DMA_CH_VALID);
+ break;
+ default:
+ break;
}
- writel_relaxed(1 << cid, sdma->base + SIRFSOC_DMA_CH_VALID);
-
list_splice_tail_init(&schan->active, &schan->free);
list_splice_tail_init(&schan->queued, &schan->free);
@@ -338,13 +495,25 @@ static int sirfsoc_dma_pause_chan(struct dma_chan *chan)
spin_lock_irqsave(&schan->lock, flags);
- if (!sdma->is_marco)
- writel_relaxed(readl_relaxed(sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL)
- & ~((1 << cid) | 1 << (cid + 16)),
- sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
- else
+ switch (sdma->type) {
+ case SIRFSOC_DMA_VER_A7V1:
writel_relaxed((1 << cid) | 1 << (cid + 16),
- sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL_CLR);
+ sdma->base +
+ SIRFSOC_DMA_CH_LOOP_CTRL_CLR_ATLAS7);
+ break;
+ case SIRFSOC_DMA_VER_A7V2:
+ writel_relaxed(0, sdma->base + SIRFSOC_DMA_LOOP_CTRL_ATLAS7);
+ break;
+ case SIRFSOC_DMA_VER_A6:
+ writel_relaxed(readl_relaxed(sdma->base +
+ SIRFSOC_DMA_CH_LOOP_CTRL) &
+ ~((1 << cid) | 1 << (cid + 16)),
+ sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
+ break;
+
+ default:
+ break;
+ }
spin_unlock_irqrestore(&schan->lock, flags);
@@ -359,14 +528,25 @@ static int sirfsoc_dma_resume_chan(struct dma_chan *chan)
unsigned long flags;
spin_lock_irqsave(&schan->lock, flags);
-
- if (!sdma->is_marco)
- writel_relaxed(readl_relaxed(sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL)
- | ((1 << cid) | 1 << (cid + 16)),
- sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
- else
+ switch (sdma->type) {
+ case SIRFSOC_DMA_VER_A7V1:
writel_relaxed((1 << cid) | 1 << (cid + 16),
- sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
+ sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL_ATLAS7);
+ break;
+ case SIRFSOC_DMA_VER_A7V2:
+ writel_relaxed(0x10001,
+ sdma->base + SIRFSOC_DMA_LOOP_CTRL_ATLAS7);
+ break;
+ case SIRFSOC_DMA_VER_A6:
+ writel_relaxed(readl_relaxed(sdma->base +
+ SIRFSOC_DMA_CH_LOOP_CTRL) |
+ ((1 << cid) | 1 << (cid + 16)),
+ sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
+ break;
+
+ default:
+ break;
+ }
spin_unlock_irqrestore(&schan->lock, flags);
@@ -473,14 +653,31 @@ sirfsoc_dma_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
spin_lock_irqsave(&schan->lock, flags);
- sdesc = list_first_entry(&schan->active, struct sirfsoc_dma_desc,
- node);
- dma_request_bytes = (sdesc->xlen + 1) * (sdesc->ylen + 1) *
- (sdesc->width * SIRFSOC_DMA_WORD_LEN);
+ if (list_empty(&schan->active)) {
+ ret = dma_cookie_status(chan, cookie, txstate);
+ dma_set_residue(txstate, 0);
+ spin_unlock_irqrestore(&schan->lock, flags);
+ return ret;
+ }
+ sdesc = list_first_entry(&schan->active, struct sirfsoc_dma_desc, node);
+ if (sdesc->cyclic)
+ dma_request_bytes = (sdesc->xlen + 1) * (sdesc->ylen + 1) *
+ (sdesc->width * SIRFSOC_DMA_WORD_LEN);
+ else
+ dma_request_bytes = sdesc->xlen * SIRFSOC_DMA_WORD_LEN;
ret = dma_cookie_status(chan, cookie, txstate);
- dma_pos = readl_relaxed(sdma->base + cid * 0x10 + SIRFSOC_DMA_CH_ADDR)
- << 2;
+
+ if (sdma->type == SIRFSOC_DMA_VER_A7V2)
+ cid = 0;
+
+ if (sdma->type == SIRFSOC_DMA_VER_A7V2) {
+ dma_pos = readl_relaxed(sdma->base + SIRFSOC_DMA_CUR_DATA_ADDR);
+ } else {
+ dma_pos = readl_relaxed(
+ sdma->base + cid * 0x10 + SIRFSOC_DMA_CH_ADDR) << 2;
+ }
+
residue = dma_request_bytes - (dma_pos - sdesc->addr);
dma_set_residue(txstate, residue);
@@ -647,6 +844,7 @@ static int sirfsoc_dma_probe(struct platform_device *op)
struct dma_device *dma;
struct sirfsoc_dma *sdma;
struct sirfsoc_dma_chan *schan;
+ struct sirfsoc_dmadata *data;
struct resource res;
ulong regs_start, regs_size;
u32 id;
@@ -657,9 +855,11 @@ static int sirfsoc_dma_probe(struct platform_device *op)
dev_err(dev, "Memory exhausted!\n");
return -ENOMEM;
}
-
- if (of_device_is_compatible(dn, "sirf,marco-dmac"))
- sdma->is_marco = true;
+ data = (struct sirfsoc_dmadata *)
+ (of_match_device(op->dev.driver->of_match_table,
+ &op->dev)->data);
+ sdma->exec_desc = data->exec;
+ sdma->type = data->type;
if (of_property_read_u32(dn, "cell-index", &id)) {
dev_err(dev, "Fail to get DMAC index\n");
@@ -816,6 +1016,8 @@ static int sirfsoc_dma_pm_suspend(struct device *dev)
struct sirfsoc_dma_chan *schan;
int ch;
int ret;
+ int count;
+ u32 int_offset;
/*
* if we were runtime-suspended before, resume to enable clock
@@ -827,11 +1029,19 @@ static int sirfsoc_dma_pm_suspend(struct device *dev)
return ret;
}
+ if (sdma->type == SIRFSOC_DMA_VER_A7V2) {
+ count = 1;
+ int_offset = SIRFSOC_DMA_INT_EN_ATLAS7;
+ } else {
+ count = SIRFSOC_DMA_CHANNELS;
+ int_offset = SIRFSOC_DMA_INT_EN;
+ }
+
/*
* DMA controller will lose all registers while suspending
* so we need to save registers for active channels
*/
- for (ch = 0; ch < SIRFSOC_DMA_CHANNELS; ch++) {
+ for (ch = 0; ch < count; ch++) {
schan = &sdma->channels[ch];
if (list_empty(&schan->active))
continue;
@@ -841,7 +1051,7 @@ static int sirfsoc_dma_pm_suspend(struct device *dev)
save->ctrl[ch] = readl_relaxed(sdma->base +
ch * 0x10 + SIRFSOC_DMA_CH_CTRL);
}
- save->interrupt_en = readl_relaxed(sdma->base + SIRFSOC_DMA_INT_EN);
+ save->interrupt_en = readl_relaxed(sdma->base + int_offset);
/* Disable clock */
sirfsoc_dma_runtime_suspend(dev);
@@ -857,14 +1067,27 @@ static int sirfsoc_dma_pm_resume(struct device *dev)
struct sirfsoc_dma_chan *schan;
int ch;
int ret;
+ int count;
+ u32 int_offset;
+ u32 width_offset;
/* Enable clock before accessing register */
ret = sirfsoc_dma_runtime_resume(dev);
if (ret < 0)
return ret;
- writel_relaxed(save->interrupt_en, sdma->base + SIRFSOC_DMA_INT_EN);
- for (ch = 0; ch < SIRFSOC_DMA_CHANNELS; ch++) {
+ if (sdma->type == SIRFSOC_DMA_VER_A7V2) {
+ count = 1;
+ int_offset = SIRFSOC_DMA_INT_EN_ATLAS7;
+ width_offset = SIRFSOC_DMA_WIDTH_ATLAS7;
+ } else {
+ count = SIRFSOC_DMA_CHANNELS;
+ int_offset = SIRFSOC_DMA_INT_EN;
+ width_offset = SIRFSOC_DMA_WIDTH_0;
+ }
+
+ writel_relaxed(save->interrupt_en, sdma->base + int_offset);
+ for (ch = 0; ch < count; ch++) {
schan = &sdma->channels[ch];
if (list_empty(&schan->active))
continue;
@@ -872,15 +1095,21 @@ static int sirfsoc_dma_pm_resume(struct device *dev)
struct sirfsoc_dma_desc,
node);
writel_relaxed(sdesc->width,
- sdma->base + SIRFSOC_DMA_WIDTH_0 + ch * 4);
+ sdma->base + width_offset + ch * 4);
writel_relaxed(sdesc->xlen,
sdma->base + ch * 0x10 + SIRFSOC_DMA_CH_XLEN);
writel_relaxed(sdesc->ylen,
sdma->base + ch * 0x10 + SIRFSOC_DMA_CH_YLEN);
writel_relaxed(save->ctrl[ch],
sdma->base + ch * 0x10 + SIRFSOC_DMA_CH_CTRL);
- writel_relaxed(sdesc->addr >> 2,
- sdma->base + ch * 0x10 + SIRFSOC_DMA_CH_ADDR);
+ if (sdma->type == SIRFSOC_DMA_VER_A7V2) {
+ writel_relaxed(sdesc->addr,
+ sdma->base + SIRFSOC_DMA_CH_ADDR);
+ } else {
+ writel_relaxed(sdesc->addr >> 2,
+ sdma->base + ch * 0x10 + SIRFSOC_DMA_CH_ADDR);
+
+ }
}
/* if we were runtime-suspended before, suspend again */
@@ -896,9 +1125,25 @@ static const struct dev_pm_ops sirfsoc_dma_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(sirfsoc_dma_pm_suspend, sirfsoc_dma_pm_resume)
};
+struct sirfsoc_dmadata sirfsoc_dmadata_a6 = {
+ .exec = sirfsoc_dma_execute_hw_a6,
+ .type = SIRFSOC_DMA_VER_A6,
+};
+
+struct sirfsoc_dmadata sirfsoc_dmadata_a7v1 = {
+ .exec = sirfsoc_dma_execute_hw_a7v1,
+ .type = SIRFSOC_DMA_VER_A7V1,
+};
+
+struct sirfsoc_dmadata sirfsoc_dmadata_a7v2 = {
+ .exec = sirfsoc_dma_execute_hw_a7v2,
+ .type = SIRFSOC_DMA_VER_A7V2,
+};
+
static const struct of_device_id sirfsoc_dma_match[] = {
- { .compatible = "sirf,prima2-dmac", },
- { .compatible = "sirf,marco-dmac", },
+ { .compatible = "sirf,prima2-dmac", .data = &sirfsoc_dmadata_a6,},
+ { .compatible = "sirf,atlas7-dmac", .data = &sirfsoc_dmadata_a7v1,},
+ { .compatible = "sirf,atlas7-dmac-v2", .data = &sirfsoc_dmadata_a7v2,},
{},
};
@@ -925,7 +1170,7 @@ static void __exit sirfsoc_dma_exit(void)
subsys_initcall(sirfsoc_dma_init);
module_exit(sirfsoc_dma_exit);
-MODULE_AUTHOR("Rongjun Ying <rongjun.ying@csr.com>, "
- "Barry Song <baohua.song@csr.com>");
+MODULE_AUTHOR("Rongjun Ying <rongjun.ying@csr.com>");
+MODULE_AUTHOR("Barry Song <baohua.song@csr.com>");
MODULE_DESCRIPTION("SIRFSOC DMA control driver");
MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-21 03:06:38 +0000