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Diffstat (limited to 'arch/arm/plat-mxc/dma-mx1-mx2.c')
-rw-r--r--arch/arm/plat-mxc/dma-mx1-mx2.c160
1 files changed, 90 insertions, 70 deletions
diff --git a/arch/arm/plat-mxc/dma-mx1-mx2.c b/arch/arm/plat-mxc/dma-mx1-mx2.c
index 9c1b3f9c4f4..eddc96594ec 100644
--- a/arch/arm/plat-mxc/dma-mx1-mx2.c
+++ b/arch/arm/plat-mxc/dma-mx1-mx2.c
@@ -128,6 +128,18 @@ struct imx_dma_channel {
int hw_chaining;
};
+static void __iomem *imx_dmav1_baseaddr;
+
+static void imx_dmav1_writel(unsigned val, unsigned offset)
+{
+ __raw_writel(val, imx_dmav1_baseaddr + offset);
+}
+
+static unsigned imx_dmav1_readl(unsigned offset)
+{
+ return __raw_readl(imx_dmav1_baseaddr + offset);
+}
+
static struct imx_dma_channel imx_dma_channels[IMX_DMA_CHANNELS];
static struct clk *dma_clk;
@@ -140,7 +152,6 @@ static int imx_dma_hw_chain(struct imx_dma_channel *imxdma)
return 0;
}
-
/*
* imx_dma_sg_next - prepare next chunk for scatter-gather DMA emulation
*/
@@ -160,17 +171,17 @@ static inline int imx_dma_sg_next(int channel, struct scatterlist *sg)
imxdma->resbytes -= now;
if ((imxdma->dma_mode & DMA_MODE_MASK) == DMA_MODE_READ)
- __raw_writel(sg->dma_address, DMA_BASE + DMA_DAR(channel));
+ imx_dmav1_writel(sg->dma_address, DMA_DAR(channel));
else
- __raw_writel(sg->dma_address, DMA_BASE + DMA_SAR(channel));
+ imx_dmav1_writel(sg->dma_address, DMA_SAR(channel));
- __raw_writel(now, DMA_BASE + DMA_CNTR(channel));
+ imx_dmav1_writel(now, DMA_CNTR(channel));
pr_debug("imxdma%d: next sg chunk dst 0x%08x, src 0x%08x, "
"size 0x%08x\n", channel,
- __raw_readl(DMA_BASE + DMA_DAR(channel)),
- __raw_readl(DMA_BASE + DMA_SAR(channel)),
- __raw_readl(DMA_BASE + DMA_CNTR(channel)));
+ imx_dmav1_readl(DMA_DAR(channel)),
+ imx_dmav1_readl(DMA_SAR(channel)),
+ imx_dmav1_readl(DMA_CNTR(channel)));
return now;
}
@@ -218,27 +229,26 @@ imx_dma_setup_single(int channel, dma_addr_t dma_address,
channel, __func__, (unsigned int)dma_address,
dma_length, dev_addr);
- __raw_writel(dev_addr, DMA_BASE + DMA_SAR(channel));
- __raw_writel(dma_address, DMA_BASE + DMA_DAR(channel));
- __raw_writel(imxdma->ccr_from_device,
- DMA_BASE + DMA_CCR(channel));
+ imx_dmav1_writel(dev_addr, DMA_SAR(channel));
+ imx_dmav1_writel(dma_address, DMA_DAR(channel));
+ imx_dmav1_writel(imxdma->ccr_from_device, DMA_CCR(channel));
} else if ((dmamode & DMA_MODE_MASK) == DMA_MODE_WRITE) {
pr_debug("imxdma%d: %s dma_addressg=0x%08x dma_length=%d "
"dev_addr=0x%08x for write\n",
channel, __func__, (unsigned int)dma_address,
dma_length, dev_addr);
- __raw_writel(dma_address, DMA_BASE + DMA_SAR(channel));
- __raw_writel(dev_addr, DMA_BASE + DMA_DAR(channel));
- __raw_writel(imxdma->ccr_to_device,
- DMA_BASE + DMA_CCR(channel));
+ imx_dmav1_writel(dma_address, DMA_SAR(channel));
+ imx_dmav1_writel(dev_addr, DMA_DAR(channel));
+ imx_dmav1_writel(imxdma->ccr_to_device,
+ DMA_CCR(channel));
} else {
printk(KERN_ERR "imxdma%d: imx_dma_setup_single bad dmamode\n",
channel);
return -EINVAL;
}
- __raw_writel(dma_length, DMA_BASE + DMA_CNTR(channel));
+ imx_dmav1_writel(dma_length, DMA_CNTR(channel));
return 0;
}
@@ -316,17 +326,15 @@ imx_dma_setup_sg(int channel,
"dev_addr=0x%08x for read\n",
channel, __func__, sg, sgcount, dma_length, dev_addr);
- __raw_writel(dev_addr, DMA_BASE + DMA_SAR(channel));
- __raw_writel(imxdma->ccr_from_device,
- DMA_BASE + DMA_CCR(channel));
+ imx_dmav1_writel(dev_addr, DMA_SAR(channel));
+ imx_dmav1_writel(imxdma->ccr_from_device, DMA_CCR(channel));
} else if ((dmamode & DMA_MODE_MASK) == DMA_MODE_WRITE) {
pr_debug("imxdma%d: %s sg=%p sgcount=%d total length=%d "
"dev_addr=0x%08x for write\n",
channel, __func__, sg, sgcount, dma_length, dev_addr);
- __raw_writel(dev_addr, DMA_BASE + DMA_DAR(channel));
- __raw_writel(imxdma->ccr_to_device,
- DMA_BASE + DMA_CCR(channel));
+ imx_dmav1_writel(dev_addr, DMA_DAR(channel));
+ imx_dmav1_writel(imxdma->ccr_to_device, DMA_CCR(channel));
} else {
printk(KERN_ERR "imxdma%d: imx_dma_setup_sg bad dmamode\n",
channel);
@@ -360,7 +368,7 @@ imx_dma_config_channel(int channel, unsigned int config_port,
imxdma->ccr_from_device = config_port | (config_mem << 2) | dreq;
imxdma->ccr_to_device = config_mem | (config_port << 2) | dreq;
- __raw_writel(dmareq, DMA_BASE + DMA_RSSR(channel));
+ imx_dmav1_writel(dmareq, DMA_RSSR(channel));
return 0;
}
@@ -368,7 +376,7 @@ EXPORT_SYMBOL(imx_dma_config_channel);
void imx_dma_config_burstlen(int channel, unsigned int burstlen)
{
- __raw_writel(burstlen, DMA_BASE + DMA_BLR(channel));
+ imx_dmav1_writel(burstlen, DMA_BLR(channel));
}
EXPORT_SYMBOL(imx_dma_config_burstlen);
@@ -398,7 +406,7 @@ imx_dma_setup_handlers(int channel,
}
local_irq_save(flags);
- __raw_writel(1 << channel, DMA_BASE + DMA_DISR);
+ imx_dmav1_writel(1 << channel, DMA_DISR);
imxdma->irq_handler = irq_handler;
imxdma->err_handler = err_handler;
imxdma->data = data;
@@ -462,12 +470,10 @@ void imx_dma_enable(int channel)
local_irq_save(flags);
- __raw_writel(1 << channel, DMA_BASE + DMA_DISR);
- __raw_writel(__raw_readl(DMA_BASE + DMA_DIMR) & ~(1 << channel),
- DMA_BASE + DMA_DIMR);
- __raw_writel(__raw_readl(DMA_BASE + DMA_CCR(channel)) | CCR_CEN |
- CCR_ACRPT,
- DMA_BASE + DMA_CCR(channel));
+ imx_dmav1_writel(1 << channel, DMA_DISR);
+ imx_dmav1_writel(imx_dmav1_readl(DMA_DIMR) & ~(1 << channel), DMA_DIMR);
+ imx_dmav1_writel(imx_dmav1_readl(DMA_CCR(channel)) | CCR_CEN |
+ CCR_ACRPT, DMA_CCR(channel));
#ifdef CONFIG_ARCH_MX2
if (imxdma->sg && imx_dma_hw_chain(imxdma)) {
@@ -475,9 +481,9 @@ void imx_dma_enable(int channel)
if (imxdma->sg) {
u32 tmp;
imx_dma_sg_next(channel, imxdma->sg);
- tmp = __raw_readl(DMA_BASE + DMA_CCR(channel));
- __raw_writel(tmp | CCR_RPT | CCR_ACRPT,
- DMA_BASE + DMA_CCR(channel));
+ tmp = imx_dmav1_readl(DMA_CCR(channel));
+ imx_dmav1_writel(tmp | CCR_RPT | CCR_ACRPT,
+ DMA_CCR(channel));
}
}
#endif
@@ -502,11 +508,10 @@ void imx_dma_disable(int channel)
del_timer(&imxdma->watchdog);
local_irq_save(flags);
- __raw_writel(__raw_readl(DMA_BASE + DMA_DIMR) | (1 << channel),
- DMA_BASE + DMA_DIMR);
- __raw_writel(__raw_readl(DMA_BASE + DMA_CCR(channel)) & ~CCR_CEN,
- DMA_BASE + DMA_CCR(channel));
- __raw_writel(1 << channel, DMA_BASE + DMA_DISR);
+ imx_dmav1_writel(imx_dmav1_readl(DMA_DIMR) | (1 << channel), DMA_DIMR);
+ imx_dmav1_writel(imx_dmav1_readl(DMA_CCR(channel)) & ~CCR_CEN,
+ DMA_CCR(channel));
+ imx_dmav1_writel(1 << channel, DMA_DISR);
imxdma->in_use = 0;
local_irq_restore(flags);
}
@@ -517,7 +522,7 @@ static void imx_dma_watchdog(unsigned long chno)
{
struct imx_dma_channel *imxdma = &imx_dma_channels[chno];
- __raw_writel(0, DMA_BASE + DMA_CCR(chno));
+ imx_dmav1_writel(0, DMA_CCR(chno));
imxdma->in_use = 0;
imxdma->sg = NULL;
@@ -533,17 +538,17 @@ static irqreturn_t dma_err_handler(int irq, void *dev_id)
unsigned int err_mask;
int errcode;
- disr = __raw_readl(DMA_BASE + DMA_DISR);
+ disr = imx_dmav1_readl(DMA_DISR);
- err_mask = __raw_readl(DMA_BASE + DMA_DBTOSR) |
- __raw_readl(DMA_BASE + DMA_DRTOSR) |
- __raw_readl(DMA_BASE + DMA_DSESR) |
- __raw_readl(DMA_BASE + DMA_DBOSR);
+ err_mask = imx_dmav1_readl(DMA_DBTOSR) |
+ imx_dmav1_readl(DMA_DRTOSR) |
+ imx_dmav1_readl(DMA_DSESR) |
+ imx_dmav1_readl(DMA_DBOSR);
if (!err_mask)
return IRQ_HANDLED;
- __raw_writel(disr & err_mask, DMA_BASE + DMA_DISR);
+ imx_dmav1_writel(disr & err_mask, DMA_DISR);
for (i = 0; i < IMX_DMA_CHANNELS; i++) {
if (!(err_mask & (1 << i)))
@@ -551,20 +556,20 @@ static irqreturn_t dma_err_handler(int irq, void *dev_id)
imxdma = &imx_dma_channels[i];
errcode = 0;
- if (__raw_readl(DMA_BASE + DMA_DBTOSR) & (1 << i)) {
- __raw_writel(1 << i, DMA_BASE + DMA_DBTOSR);
+ if (imx_dmav1_readl(DMA_DBTOSR) & (1 << i)) {
+ imx_dmav1_writel(1 << i, DMA_DBTOSR);
errcode |= IMX_DMA_ERR_BURST;
}
- if (__raw_readl(DMA_BASE + DMA_DRTOSR) & (1 << i)) {
- __raw_writel(1 << i, DMA_BASE + DMA_DRTOSR);
+ if (imx_dmav1_readl(DMA_DRTOSR) & (1 << i)) {
+ imx_dmav1_writel(1 << i, DMA_DRTOSR);
errcode |= IMX_DMA_ERR_REQUEST;
}
- if (__raw_readl(DMA_BASE + DMA_DSESR) & (1 << i)) {
- __raw_writel(1 << i, DMA_BASE + DMA_DSESR);
+ if (imx_dmav1_readl(DMA_DSESR) & (1 << i)) {
+ imx_dmav1_writel(1 << i, DMA_DSESR);
errcode |= IMX_DMA_ERR_TRANSFER;
}
- if (__raw_readl(DMA_BASE + DMA_DBOSR) & (1 << i)) {
- __raw_writel(1 << i, DMA_BASE + DMA_DBOSR);
+ if (imx_dmav1_readl(DMA_DBOSR) & (1 << i)) {
+ imx_dmav1_writel(1 << i, DMA_DBOSR);
errcode |= IMX_DMA_ERR_BUFFER;
}
if (imxdma->name && imxdma->err_handler) {
@@ -607,7 +612,7 @@ static void dma_irq_handle_channel(int chno)
if (imxdma->sg) {
imx_dma_sg_next(chno, imxdma->sg);
- tmp = __raw_readl(DMA_BASE + DMA_CCR(chno));
+ tmp = imx_dmav1_readl(DMA_CCR(chno));
if (imx_dma_hw_chain(imxdma)) {
/* FIXME: The timeout should probably be
@@ -617,15 +622,13 @@ static void dma_irq_handle_channel(int chno)
jiffies + msecs_to_jiffies(500));
tmp |= CCR_CEN | CCR_RPT | CCR_ACRPT;
- __raw_writel(tmp, DMA_BASE +
- DMA_CCR(chno));
+ imx_dmav1_writel(tmp, DMA_CCR(chno));
} else {
- __raw_writel(tmp & ~CCR_CEN, DMA_BASE +
- DMA_CCR(chno));
+ imx_dmav1_writel(tmp & ~CCR_CEN, DMA_CCR(chno));
tmp |= CCR_CEN;
}
- __raw_writel(tmp, DMA_BASE + DMA_CCR(chno));
+ imx_dmav1_writel(tmp, DMA_CCR(chno));
if (imxdma->prog_handler)
imxdma->prog_handler(chno, imxdma->data,
@@ -640,7 +643,7 @@ static void dma_irq_handle_channel(int chno)
}
}
- __raw_writel(0, DMA_BASE + DMA_CCR(chno));
+ imx_dmav1_writel(0, DMA_CCR(chno));
imxdma->in_use = 0;
if (imxdma->irq_handler)
imxdma->irq_handler(chno, imxdma->data);
@@ -654,12 +657,12 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id)
dma_err_handler(irq, dev_id);
#endif
- disr = __raw_readl(DMA_BASE + DMA_DISR);
+ disr = imx_dmav1_readl(DMA_DISR);
pr_debug("imxdma: dma_irq_handler called, disr=0x%08x\n",
disr);
- __raw_writel(disr, DMA_BASE + DMA_DISR);
+ imx_dmav1_writel(disr, DMA_DISR);
for (i = 0; i < IMX_DMA_CHANNELS; i++) {
if (disr & (1 << i))
dma_irq_handle_channel(i);
@@ -699,12 +702,12 @@ int imx_dma_request(int channel, const char *name)
local_irq_restore(flags); /* request_irq() can block */
#ifdef CONFIG_ARCH_MX2
- ret = request_irq(MXC_INT_DMACH0 + channel, dma_irq_handler, 0, "DMA",
+ ret = request_irq(MX2x_INT_DMACH0 + channel, dma_irq_handler, 0, "DMA",
NULL);
if (ret) {
imxdma->name = NULL;
printk(KERN_CRIT "Can't register IRQ %d for DMA channel %d\n",
- MXC_INT_DMACH0 + channel, channel);
+ MX2x_INT_DMACH0 + channel, channel);
return ret;
}
init_timer(&imxdma->watchdog);
@@ -738,7 +741,7 @@ void imx_dma_free(int channel)
imxdma->name = NULL;
#ifdef CONFIG_ARCH_MX2
- free_irq(MXC_INT_DMACH0 + channel, NULL);
+ free_irq(MX2x_INT_DMACH0 + channel, NULL);
#endif
local_irq_restore(flags);
@@ -796,11 +799,28 @@ static int __init imx_dma_init(void)
int ret = 0;
int i;
+#ifdef CONFIG_ARCH_MX1
+ if (cpu_is_mx1())
+ imx_dmav1_baseaddr = MX1_IO_ADDRESS(MX1_DMA_BASE_ADDR);
+ else
+#endif
+#ifdef CONFIG_MACH_MX21
+ if (cpu_is_mx21())
+ imx_dmav1_baseaddr = MX21_IO_ADDRESS(MX21_DMA_BASE_ADDR);
+ else
+#endif
+#ifdef CONFIG_MACH_MX27
+ if (cpu_is_mx27())
+ imx_dmav1_baseaddr = MX27_IO_ADDRESS(MX27_DMA_BASE_ADDR);
+ else
+#endif
+ BUG();
+
dma_clk = clk_get(NULL, "dma");
clk_enable(dma_clk);
/* reset DMA module */
- __raw_writel(DCR_DRST, DMA_BASE + DMA_DCR);
+ imx_dmav1_writel(DCR_DRST, DMA_DCR);
#ifdef CONFIG_ARCH_MX1
ret = request_irq(DMA_INT, dma_irq_handler, 0, "DMA", NULL);
@@ -817,13 +837,13 @@ static int __init imx_dma_init(void)
}
#endif
/* enable DMA module */
- __raw_writel(DCR_DEN, DMA_BASE + DMA_DCR);
+ imx_dmav1_writel(DCR_DEN, DMA_DCR);
/* clear all interrupts */
- __raw_writel((1 << IMX_DMA_CHANNELS) - 1, DMA_BASE + DMA_DISR);
+ imx_dmav1_writel((1 << IMX_DMA_CHANNELS) - 1, DMA_DISR);
/* disable interrupts */
- __raw_writel((1 << IMX_DMA_CHANNELS) - 1, DMA_BASE + DMA_DIMR);
+ imx_dmav1_writel((1 << IMX_DMA_CHANNELS) - 1, DMA_DIMR);
for (i = 0; i < IMX_DMA_CHANNELS; i++) {
imx_dma_channels[i].sg = NULL;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-17 11:03:25 +0000