1 files changed, 117 insertions, 90 deletions

diff --git a/arch/arm/plat-mxc/dma-mx1-mx2.c b/arch/arm/plat-mxc/dma-mx1-mx2.c
index 9c1b3f9c4f4d..e16014b0d13c 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;
@@ -462,22 +470,21 @@ 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)) {
+        if ((cpu_is_mx21() || cpu_is_mx27()) &&
+                        imxdma->sg && imx_dma_hw_chain(imxdma)) {
                 imxdma->sg = sg_next(imxdma->sg);
                 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 +509,10 @@ 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 +523,7 @@ 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 +539,17 @@ 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 +557,20 @@ 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 +613,7 @@ 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 +623,13 @@ 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 +644,7 @@ 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);
@@ -651,15 +655,16 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id)
         int i, disr;
 
 #ifdef CONFIG_ARCH_MX2
-        dma_err_handler(irq, dev_id);
+        if (cpu_is_mx21() || cpu_is_mx27())
+                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);
@@ -699,17 +704,19 @@ 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",
-                        NULL);
-        if (ret) {
-                imxdma->name = NULL;
-                printk(KERN_CRIT "Can't register IRQ %d for DMA channel %d\n",
-                                MXC_INT_DMACH0 + channel, channel);
-                return ret;
+        if (cpu_is_mx21() || cpu_is_mx27()) {
+                ret = request_irq(MX2x_INT_DMACH0 + channel,
+                                dma_irq_handler, 0, "DMA", NULL);
+                if (ret) {
+                        imxdma->name = NULL;
+                        pr_crit("Can't register IRQ %d for DMA channel %d\n",
+                                        MX2x_INT_DMACH0 + channel, channel);
+                        return ret;
+                }
+                init_timer(&imxdma->watchdog);
+                imxdma->watchdog.function = &imx_dma_watchdog;
+                imxdma->watchdog.data = channel;
         }
-        init_timer(&imxdma->watchdog);
-        imxdma->watchdog.function = &imx_dma_watchdog;
-        imxdma->watchdog.data = channel;
 #endif
 
         return ret;
@@ -738,7 +745,8 @@ void imx_dma_free(int channel)
         imxdma->name = NULL;
 
 #ifdef CONFIG_ARCH_MX2
-        free_irq(MXC_INT_DMACH0 + channel, NULL);
+        if (cpu_is_mx21() || cpu_is_mx27())
+                free_irq(MX2x_INT_DMACH0 + channel, NULL);
 #endif
 
         local_irq_restore(flags);
@@ -796,34 +804,53 @@ 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);
-        if (ret) {
-                printk(KERN_CRIT "Wow!  Can't register IRQ for DMA\n");
-                return ret;
-        }
+        if (cpu_is_mx1()) {
+                ret = request_irq(MX1_DMA_INT, dma_irq_handler, 0, "DMA", NULL);
+                if (ret) {
+                        pr_crit("Wow!  Can't register IRQ for DMA\n");
+                        return ret;
+                }
 
-        ret = request_irq(DMA_ERR, dma_err_handler, 0, "DMA", NULL);
-        if (ret) {
-                printk(KERN_CRIT "Wow!  Can't register ERRIRQ for DMA\n");
-                free_irq(DMA_INT, NULL);
-                return ret;
+                ret = request_irq(MX1_DMA_ERR, dma_err_handler, 0, "DMA", NULL);
+                if (ret) {
+                        pr_crit("Wow!  Can't register ERRIRQ for DMA\n");
+                        free_irq(MX1_DMA_INT, NULL);
+                        return ret;
+                }
         }
 #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;