ARM: pxa: move core and drivers to dmaengine

index a2a54f6..736673a 100644
@@ -24,14 +24,7 @@
 #include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-
-#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
-#define ARCH_HAS_DMA
-#endif
-
-#ifdef ARCH_HAS_DMA
-#include <mach/dma.h>
-#endif
+#include <linux/dmaengine.h>
 
 #include <linux/platform_data/mtd-nand-pxa3xx.h>
 

@@ -172,9 +165,7 @@ struct pxa3xx_nand_info {
 	unsigned char		*data_buff;
 	unsigned char		*oob_buff;
 	dma_addr_t 		data_buff_phys;
-	int 			data_dma_ch;
-	struct pxa_dma_desc	*data_desc;
-	dma_addr_t 		data_desc_addr;
+	struct dma_chan		*data_dma_ch;
 
 	struct pxa3xx_nand_host *host[NUM_CHIP_SELECT];
 	unsigned int		state;

@@ -388,25 +379,39 @@ static void handle_data_pio(struct pxa3xx_nand_info *info)
 	}
 }
 
-#ifdef ARCH_HAS_DMA
+#ifdef CONFIG_HAS_DMA
+static void dma_complete_func(void *data)
+{
+	struct pxa3xx_nand_info *info = data;
+
+	info->state = STATE_DMA_DONE;
+}
+
 static void start_data_dma(struct pxa3xx_nand_info *info)
 {
-	struct pxa_dma_desc *desc = info->data_desc;
+	struct dma_device *dma_dev;
+	struct dma_async_tx_descriptor *tx = NULL;
+	dma_addr_t dma_src_addr, dma_dst_addr;
+	dma_cookie_t cookie;
 	int dma_len = ALIGN(info->data_size + info->oob_size, 32);
+	struct dma_slave_config conf;
 
-	desc->ddadr = DDADR_STOP;
-	desc->dcmd = DCMD_ENDIRQEN | DCMD_WIDTH4 | DCMD_BURST32 | dma_len;
+	dma_dev = info->data_dma_ch->device;
 
 	switch (info->state) {
 	case STATE_DMA_WRITING:
-		desc->dsadr = info->data_buff_phys;
-		desc->dtadr = info->mmio_phys + NDDB;
-		desc->dcmd |= DCMD_INCSRCADDR | DCMD_FLOWTRG;
+		dma_src_addr = info->data_buff_phys;
+		dma_dst_addr = info->mmio_phys + NDDB;
+		conf.direction = DMA_MEM_TO_DEV;
+		conf.dst_maxburst = 32;
+		conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 		break;
 	case STATE_DMA_READING:
-		desc->dtadr = info->data_buff_phys;
-		desc->dsadr = info->mmio_phys + NDDB;
-		desc->dcmd |= DCMD_INCTRGADDR | DCMD_FLOWSRC;
+		dma_src_addr = info->mmio_phys + NDDB;
+		dma_dst_addr = info->data_buff_phys;
+		conf.direction = DMA_DEV_TO_MEM;
+		conf.src_maxburst = 32;
+		conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 		break;
 	default:
 		dev_err(&info->pdev->dev, "%s: invalid state %d\n", __func__,

@@ -414,26 +419,25 @@ static void start_data_dma(struct pxa3xx_nand_info *info)
 		BUG();
 	}
 
-	DRCMR(info->drcmr_dat) = DRCMR_MAPVLD | info->data_dma_ch;
-	DDADR(info->data_dma_ch) = info->data_desc_addr;
-	DCSR(info->data_dma_ch) |= DCSR_RUN;
-}
-
-static void pxa3xx_nand_data_dma_irq(int channel, void *data)
-{
-	struct pxa3xx_nand_info *info = data;
-	uint32_t dcsr;
+	conf.slave_id = info->drcmr_dat;
+	dmaengine_slave_config(info->data_dma_ch, &conf);
+	tx = dma_dev->device_prep_dma_memcpy(info->data_dma_ch, dma_dst_addr,
+					     dma_src_addr, dma_len, 0);
+	if (!tx) {
+		dev_err(&info->pdev->dev, "Failed to prepare DMA memcpy\n");
+		return;
+	}
 
-	dcsr = DCSR(channel);
-	DCSR(channel) = dcsr;
+	tx->callback = dma_complete_func;
+	tx->callback_param = info;
 
-	if (dcsr & DCSR_BUSERR) {
-		info->retcode = ERR_DMABUSERR;
+	cookie = tx->tx_submit(tx);
+	if (dma_submit_error(cookie)) {
+		dev_err(&info->pdev->dev, "Failed to do DMA tx_submit\n");
+		return;
 	}
 
-	info->state = STATE_DMA_DONE;
-	enable_int(info, NDCR_INT_MASK);
-	nand_writel(info, NDSR, NDSR_WRDREQ | NDSR_RDDREQ);
+	dma_async_issue_pending(info->data_dma_ch);
 }
 #else
 static void start_data_dma(struct pxa3xx_nand_info *info)

@@ -455,6 +459,7 @@ static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
 	}
 
 	status = nand_readl(info, NDSR);
+	nand_writel(info, NDSR, status);
 
 	if (status & NDSR_DBERR)
 		info->retcode = ERR_DBERR;

@@ -463,7 +468,6 @@ static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
 	if (status & (NDSR_RDDREQ | NDSR_WRDREQ)) {
 		/* whether use dma to transfer data */
 		if (info->use_dma) {
-			disable_int(info, NDCR_INT_MASK);
 			info->state = (status & NDSR_RDDREQ) ?
 				      STATE_DMA_READING : STATE_DMA_WRITING;
 			start_data_dma(info);

@@ -792,6 +796,9 @@ static void pxa3xx_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
 	struct pxa3xx_nand_info *info = host->info_data;
 	int real_len = min_t(size_t, len, info->buf_count - info->buf_start);
 
+	if (len > mtd->oobsize)
+		info->use_dma = use_dma;
+
 	memcpy(buf, info->data_buff + info->buf_start, real_len);
 	info->buf_start += real_len;
 }

@@ -803,6 +810,9 @@ static void pxa3xx_nand_write_buf(struct mtd_info *mtd,
 	struct pxa3xx_nand_info *info = host->info_data;
 	int real_len = min_t(size_t, len, info->buf_count - info->buf_start);
 
+	if (len > mtd->oobsize)
+		info->use_dma = use_dma;
+
 	memcpy(info->data_buff + info->buf_start, buf, real_len);
 	info->buf_start += real_len;
 }

@@ -908,11 +918,11 @@ static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info)
  */
 #define MAX_BUFF_SIZE	(PAGE_SIZE*2)
 
-#ifdef ARCH_HAS_DMA
+#ifdef CONFIG_HAS_DMA
 static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info)
 {
 	struct platform_device *pdev = info->pdev;
-	int data_desc_offset = MAX_BUFF_SIZE - sizeof(struct pxa_dma_desc);
+	dma_cap_mask_t mask;
 
 	if (use_dma == 0) {
 		info->data_buff = kmalloc(MAX_BUFF_SIZE, GFP_KERNEL);

@@ -928,26 +938,27 @@ static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info)
 		return -ENOMEM;
 	}
 
-	info->data_desc = (void *)info->data_buff + data_desc_offset;
-	info->data_desc_addr = info->data_buff_phys + data_desc_offset;
-
-	info->data_dma_ch = pxa_request_dma("nand-data", DMA_PRIO_LOW,
-				pxa3xx_nand_data_dma_irq, info);
-	if (info->data_dma_ch < 0) {
-		dev_err(&pdev->dev, "failed to request data dma\n");
-		dma_free_coherent(&pdev->dev, MAX_BUFF_SIZE,
-				info->data_buff, info->data_buff_phys);
-		return info->data_dma_ch;
+	dma_cap_zero(mask);
+	dma_cap_set(DMA_MEMCPY, mask);
+	info->data_dma_ch = dma_request_channel(mask, NULL, NULL);
+	if (!info->data_dma_ch) {
+		dev_info(&pdev->dev, "Failed to request DMA channel\n");
+		goto dma_request_fail;
 	}
 
 	return 0;
+
+dma_request_fail:
+	dma_free_coherent(&pdev->dev, MAX_BUFF_SIZE,
+			info->data_buff, info->data_buff_phys);
+	return -EAGAIN;
 }
 
 static void pxa3xx_nand_free_buff(struct pxa3xx_nand_info *info)
 {
 	struct platform_device *pdev = info->pdev;
 	if (use_dma) {
-		pxa_free_dma(info->data_dma_ch);
+		dma_release_channel(info->data_dma_ch);
 		dma_free_coherent(&pdev->dev, MAX_BUFF_SIZE,
 				  info->data_buff, info->data_buff_phys);
 	} else {

@@ -1295,7 +1306,7 @@ static int pxa3xx_nand_probe(struct platform_device *pdev)
 	struct pxa3xx_nand_info *info;
 	int ret, cs, probe_success;
 
-#ifndef ARCH_HAS_DMA
+#ifndef CONFIG_HAS_DMA
 	if (use_dma) {
 		use_dma = 0;
 		dev_warn(&pdev->dev,

index 736673a..99f56c3 100644
@@ -25,6 +25,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/dmaengine.h>
+#include <linux/dma/mmp-pdma.h>
 
 #include <linux/platform_data/mtd-nand-pxa3xx.h>
 

@@ -396,6 +397,7 @@ static void start_data_dma(struct pxa3xx_nand_info *info)
 	int dma_len = ALIGN(info->data_size + info->oob_size, 32);
 	struct dma_slave_config conf;
 
+	memset(&conf, 0, sizeof(conf));
 	dma_dev = info->data_dma_ch->device;
 
 	switch (info->state) {

@@ -419,7 +421,6 @@ static void start_data_dma(struct pxa3xx_nand_info *info)
 		BUG();
 	}
 
-	conf.slave_id = info->drcmr_dat;
 	dmaengine_slave_config(info->data_dma_ch, &conf);
 	tx = dma_dev->device_prep_dma_memcpy(info->data_dma_ch, dma_dst_addr,
 					     dma_src_addr, dma_len, 0);

@@ -940,7 +941,10 @@ static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info)
 
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_MEMCPY, mask);
-	info->data_dma_ch = dma_request_channel(mask, NULL, NULL);
+	info->data_dma_ch =
+		dma_request_slave_channel_compat(mask, mmp_pdma_filter_fn,
+						 &info->drcmr_dat,
+						 &pdev->dev, "data");
 	if (!info->data_dma_ch) {
 		dev_info(&pdev->dev, "Failed to request DMA channel\n");
 		goto dma_request_fail;

@@ -1143,16 +1147,7 @@ static int alloc_nand_resource(struct platform_device *pdev)
 		return ret;
 
 	if (use_dma) {
-		/*
-		 * This is a dirty hack to make this driver work from
-		 * devicetree bindings. It can be removed once we have
-		 * a prober DMA controller framework for DT.
-		 */
-		if (pdev->dev.of_node &&
-		    of_machine_is_compatible("marvell,pxa3xx")) {
-			info->drcmr_dat = 97;
-			info->drcmr_cmd = 99;
-		} else {
+		if (!pdev->dev.of_node) {
 			r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
 			if (r == NULL) {
 				dev_err(&pdev->dev,

index 8e11e96..a503ea0 100644
@@ -77,16 +77,17 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 	const struct platform_device_id *id = platform_get_device_id(pdev);
 	struct resource *res;
 	struct ssp_device *ssp;
+	struct device *dev = &pdev->dev;
 	int ret = 0;
 
 	ssp = kzalloc(sizeof(struct ssp_device), GFP_KERNEL);
 	if (ssp == NULL) {
-		dev_err(&pdev->dev, "failed to allocate memory");
+		dev_err(dev, "failed to allocate memory");
 		return -ENOMEM;
 	}
 	ssp->pdev = pdev;
 
-	ssp->clk = clk_get(&pdev->dev, NULL);
+	ssp->clk = clk_get(dev, NULL);
 	if (IS_ERR(ssp->clk)) {
 		ret = PTR_ERR(ssp->clk);
 		goto err_free;

@@ -94,7 +95,7 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
 	if (res == NULL) {
-		dev_err(&pdev->dev, "no SSP RX DRCMR defined\n");
+		dev_err(dev, "no SSP RX DRCMR defined\n");
 		ret = -ENODEV;
 		goto err_free_clk;
 	}

@@ -102,7 +103,7 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
 	if (res == NULL) {
-		dev_err(&pdev->dev, "no SSP TX DRCMR defined\n");
+		dev_err(dev, "no SSP TX DRCMR defined\n");
 		ret = -ENODEV;
 		goto err_free_clk;
 	}

@@ -110,7 +111,7 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res == NULL) {
-		dev_err(&pdev->dev, "no memory resource defined\n");
+		dev_err(dev, "no memory resource defined\n");
 		ret = -ENODEV;
 		goto err_free_clk;
 	}

@@ -118,7 +119,7 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 	res = request_mem_region(res->start, resource_size(res),
 			pdev->name);
 	if (res == NULL) {
-		dev_err(&pdev->dev, "failed to request memory resource\n");
+		dev_err(dev, "failed to request memory resource\n");
 		ret = -EBUSY;
 		goto err_free_clk;
 	}

@@ -127,14 +128,14 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 
 	ssp->mmio_base = ioremap(res->start, resource_size(res));
 	if (ssp->mmio_base == NULL) {
-		dev_err(&pdev->dev, "failed to ioremap() registers\n");
+		dev_err(dev, "failed to ioremap() registers\n");
 		ret = -ENODEV;
 		goto err_free_mem;
 	}
 
 	ssp->irq = platform_get_irq(pdev, 0);
 	if (ssp->irq < 0) {
-		dev_err(&pdev->dev, "no IRQ resource defined\n");
+		dev_err(dev, "no IRQ resource defined\n");
 		ret = -ENODEV;
 		goto err_free_io;
 	}

134 lines not on this page · raw message

index 7628e85..29fe314 100644
@@ -95,20 +95,17 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 	struct resource *res;
 	struct ssp_device *ssp;
 	struct device *dev = &pdev->dev;
-	int ret = 0;
 
-	ssp = kzalloc(sizeof(struct ssp_device), GFP_KERNEL);
+	ssp = devm_kzalloc(dev, sizeof(struct ssp_device), GFP_KERNEL);
 	if (ssp == NULL) {
 		dev_err(dev, "failed to allocate memory");
 		return -ENOMEM;
 	}
 	ssp->pdev = pdev;
 
-	ssp->clk = clk_get(dev, NULL);
-	if (IS_ERR(ssp->clk)) {
-		ret = PTR_ERR(ssp->clk);
-		goto err_free;
-	}
+	ssp->clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(ssp->clk))
+		return PTR_ERR(ssp->clk);
 
 	if (dev->of_node) {
 		struct of_phandle_args dma_spec;

@@ -150,32 +147,28 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res == NULL) {
 		dev_err(dev, "no memory resource defined\n");
-		ret = -ENODEV;
-		goto err_free_clk;
+		return -ENODEV;
 	}
 
-	res = request_mem_region(res->start, resource_size(res),
-			pdev->name);
+	res = devm_request_mem_region(dev, res->start, resource_size(res),
+				      pdev->name);
 	if (res == NULL) {
 		dev_err(dev, "failed to request memory resource\n");
-		ret = -EBUSY;
-		goto err_free_clk;
+		return -EBUSY;
 	}
 
 	ssp->phys_base = res->start;
 
-	ssp->mmio_base = ioremap(res->start, resource_size(res));
+	ssp->mmio_base = devm_ioremap(dev, res->start, resource_size(res));
 	if (ssp->mmio_base == NULL) {
 		dev_err(dev, "failed to ioremap() registers\n");
-		ret = -ENODEV;
-		goto err_free_mem;
+		return -ENODEV;
 	}
 
 	ssp->irq = platform_get_irq(pdev, 0);
 	if (ssp->irq < 0) {
 		dev_err(dev, "no IRQ resource defined\n");
-		ret = -ENODEV;
-		goto err_free_io;
+		return -ENODEV;
 	}
 
 	if (dev->of_node) {

@@ -202,17 +195,8 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 	mutex_unlock(&ssp_lock);
 
 	platform_set_drvdata(pdev, ssp);
-	return 0;
 
-err_free_io:
-	iounmap(ssp->mmio_base);
-err_free_mem:
-	release_mem_region(res->start, resource_size(res));
-err_free_clk:
-	clk_put(ssp->clk);
-err_free:
-	kfree(ssp);
-	return ret;
+	return 0;
 }
 
 static int pxa_ssp_remove(struct platform_device *pdev)

index 05f504e..cc6d539 100644
@@ -332,31 +332,6 @@ static void serial_pxa_break_ctl(struct uart_port *port, int break_state)
 	spin_unlock_irqrestore(&up->port.lock, flags);
 }
 
-#if 0
-static void serial_pxa_dma_init(struct pxa_uart *up)
-{
-	up->rxdma =
-		pxa_request_dma(up->name, DMA_PRIO_LOW, pxa_receive_dma, up);
-	if (up->rxdma < 0)
-		goto out;
-	up->txdma =
-		pxa_request_dma(up->name, DMA_PRIO_LOW, pxa_transmit_dma, up);
-	if (up->txdma < 0)
-		goto err_txdma;
-	up->dmadesc = kmalloc(4 * sizeof(pxa_dma_desc), GFP_KERNEL);
-	if (!up->dmadesc)
-		goto err_alloc;
-
-	/* ... */
-err_alloc:
-	pxa_free_dma(up->txdma);
-err_rxdma:
-	pxa_free_dma(up->rxdma);
-out:
-	return;
-}
-#endif
-
 static int serial_pxa_startup(struct uart_port *port)
 {
 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;

490 lines not on this page · raw message

index 5adc2a1..c37efec 100644
@@ -164,11 +164,7 @@ extern void *pxa2xx_spi_next_transfer(struct driver_data *drv_data);
 /*
  * Select the right DMA implementation.
  */
-#if defined(CONFIG_SPI_PXA2XX_PXADMA)
-#define SPI_PXA2XX_USE_DMA	1
-#define MAX_DMA_LEN		8191
-#define DEFAULT_DMA_CR1		(SSCR1_TSRE | SSCR1_RSRE | SSCR1_TINTE)
-#elif defined(CONFIG_SPI_PXA2XX_DMA)
+#if defined(CONFIG_SPI_PXA2XX_DMA)
 #define SPI_PXA2XX_USE_DMA	1
 #define MAX_DMA_LEN		SZ_64K
 #define DEFAULT_DMA_CR1		(SSCR1_TSRE | SSCR1_RSRE | SSCR1_TRAIL)

index 82d5111..48a0fee 100644
@@ -56,7 +56,6 @@ struct pxa2xx_spi_chip {
 #if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
 
 #include <linux/clk.h>
-#include <mach/dma.h>
 
 extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info);
 

index 2c5a91b..7aa97eb 100644
@@ -22,7 +22,9 @@
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
+#include <linux/dmaengine.h>
 #include <linux/dma-mapping.h>
+#include <linux/dma/mmp-pdma.h>
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/mmc/host.h>

@@ -37,7 +39,6 @@
 #include <asm/sizes.h>
 
 #include <mach/hardware.h>
-#include <mach/dma.h>
 #include <linux/platform_data/mmc-pxamci.h>
 
 #include "pxamci.h"

@@ -58,7 +59,6 @@ struct pxamci_host {
 	struct clk		*clk;
 	unsigned long		clkrate;
 	int			irq;
-	int			dma;
 	unsigned int		clkrt;
 	unsigned int		cmdat;
 	unsigned int		imask;

@@ -69,8 +69,10 @@ struct pxamci_host {
 	struct mmc_command	*cmd;
 	struct mmc_data		*data;
 
+	struct dma_chan		*dma_chan_rx;
+	struct dma_chan		*dma_chan_tx;
+	dma_cookie_t		dma_cookie;
 	dma_addr_t		sg_dma;
-	struct pxa_dma_desc	*sg_cpu;
 	unsigned int		dma_len;
 
 	unsigned int		dma_dir;

@@ -173,14 +175,18 @@ static void pxamci_disable_irq(struct pxamci_host *host, unsigned int mask)
 	spin_unlock_irqrestore(&host->lock, flags);
 }
 
+static void pxamci_dma_irq(void *param);
+
 static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
 {
+	struct dma_async_tx_descriptor *tx;
+	enum dma_data_direction direction;
+	struct dma_slave_config	config;
+	struct dma_chan *chan;
 	unsigned int nob = data->blocks;
 	unsigned long long clks;
 	unsigned int timeout;
-	bool dalgn = 0;
-	u32 dcmd;
-	int i;
+	int ret;
 
 	host->data = data;
 

@@ -195,54 +201,46 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
 	timeout = (unsigned int)clks + (data->timeout_clks << host->clkrt);
 	writel((timeout + 255) / 256, host->base + MMC_RDTO);
 
+	memset(&config, 0, sizeof(config));
+	config.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+	config.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+	config.src_addr = host->res->start + MMC_RXFIFO;
+	config.dst_addr = host->res->start + MMC_TXFIFO;
+	config.src_maxburst = 32;
+	config.dst_maxburst = 32;
+
 	if (data->flags & MMC_DATA_READ) {
 		host->dma_dir = DMA_FROM_DEVICE;
-		dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC;
-		DRCMR(host->dma_drcmrtx) = 0;
-		DRCMR(host->dma_drcmrrx) = host->dma | DRCMR_MAPVLD;
+		direction = DMA_DEV_TO_MEM;
+		chan = host->dma_chan_rx;
 	} else {
 		host->dma_dir = DMA_TO_DEVICE;
-		dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG;
-		DRCMR(host->dma_drcmrrx) = 0;
-		DRCMR(host->dma_drcmrtx) = host->dma | DRCMR_MAPVLD;
+		direction = DMA_MEM_TO_DEV;
+		chan = host->dma_chan_tx;
 	}
 
-	dcmd |= DCMD_BURST32 | DCMD_WIDTH1;
+	config.direction = direction;
+
+	ret = dmaengine_slave_config(chan, &config);
+	if (ret < 0) {
+		dev_err(mmc_dev(host->mmc), "dma slave config failed\n");
+		return;
+	}
 
-	host->dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+	host->dma_len = dma_map_sg(chan->device->dev, data->sg, data->sg_len,
 				   host->dma_dir);
 
-	for (i = 0; i < host->dma_len; i++) {
-		unsigned int length = sg_dma_len(&data->sg[i]);
-		host->sg_cpu[i].dcmd = dcmd | length;
-		if (length & 31 && !(data->flags & MMC_DATA_READ))
-			host->sg_cpu[i].dcmd |= DCMD_ENDIRQEN;
-		/* Not aligned to 8-byte boundary? */
-		if (sg_dma_address(&data->sg[i]) & 0x7)
-			dalgn = 1;
-		if (data->flags & MMC_DATA_READ) {
-			host->sg_cpu[i].dsadr = host->res->start + MMC_RXFIFO;
-			host->sg_cpu[i].dtadr = sg_dma_address(&data->sg[i]);
-		} else {
-			host->sg_cpu[i].dsadr = sg_dma_address(&data->sg[i]);
-			host->sg_cpu[i].dtadr = host->res->start + MMC_TXFIFO;
-		}
-		host->sg_cpu[i].ddadr = host->sg_dma + (i + 1) *
-					sizeof(struct pxa_dma_desc);
+	tx = dmaengine_prep_slave_sg(chan, data->sg, host->dma_len, direction,
+				     DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+	if (!tx) {
+		dev_err(mmc_dev(host->mmc), "prep_slave_sg() failed\n");
+		return;
 	}
-	host->sg_cpu[host->dma_len - 1].ddadr = DDADR_STOP;
-	wmb();
 
-	/*
-	 * The PXA27x DMA controller encounters overhead when working with
-	 * unaligned (to 8-byte boundaries) data, so switch on byte alignment
-	 * mode only if we have unaligned data.
-	 */
-	if (dalgn)
-		DALGN |= (1 << host->dma);
-	else
-		DALGN &= ~(1 << host->dma);
-	DDADR(host->dma) = host->sg_dma;
+	tx->callback = pxamci_dma_irq;
+	tx->callback_param = host;
+
+	host->dma_cookie = dmaengine_submit(tx);
 
 	/*
 	 * workaround for erratum #91:

@@ -251,7 +249,7 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
 	 * before starting DMA.
 	 */
 	if (!cpu_is_pxa27x() || data->flags & MMC_DATA_READ)
-		DCSR(host->dma) = DCSR_RUN;
+		dma_async_issue_pending(chan);
 }
 
 static void pxamci_start_cmd(struct pxamci_host *host, struct mmc_command *cmd, unsigned int cmdat)

@@ -343,7 +341,7 @@ static int pxamci_cmd_done(struct pxamci_host *host, unsigned int stat)
 		 * enable DMA late
 		 */
 		if (cpu_is_pxa27x() && host->data->flags & MMC_DATA_WRITE)
-			DCSR(host->dma) = DCSR_RUN;
+			dma_async_issue_pending(host->dma_chan_tx);
 	} else {
 		pxamci_finish_request(host, host->mrq);
 	}

@@ -358,9 +356,8 @@ static int pxamci_data_done(struct pxamci_host *host, unsigned int stat)
 	if (!data)
 		return 0;
 
-	DCSR(host->dma) = 0;
-	dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
-		     host->dma_dir);
+	dma_unmap_sg(host->dma_chan_rx->device->dev,
+		     data->sg, data->sg_len, host->dma_dir);
 
 	if (stat & STAT_READ_TIME_OUT)
 		data->error = -ETIMEDOUT;

@@ -552,17 +549,25 @@ static const struct mmc_host_ops pxamci_ops = {
 	.enable_sdio_irq	= pxamci_enable_sdio_irq,
 };
 
-static void pxamci_dma_irq(int dma, void *devid)
+static void pxamci_dma_irq(void *param)
 {
-	struct pxamci_host *host = devid;
-	int dcsr = DCSR(dma);
-	DCSR(dma) = dcsr & ~DCSR_STOPIRQEN;
+	struct pxamci_host *host = param;
+	struct dma_tx_state state;
+	enum dma_status status;
+	struct dma_chan *chan;
 
-	if (dcsr & DCSR_ENDINTR) {
+	if (host->data->flags & MMC_DATA_READ)
+		chan = host->dma_chan_rx;
+	else
+		chan = host->dma_chan_tx;
+
+	status = dmaengine_tx_status(chan, host->dma_cookie, &state);
+
+	if (likely(status == DMA_SUCCESS)) {
 		writel(BUF_PART_FULL, host->base + MMC_PRTBUF);
 	} else {
-		pr_err("%s: DMA error on channel %d (DCSR=%#x)\n",
-		       mmc_hostname(host->mmc), dma, dcsr);
+		pr_err("%s: DMA error on %s channel\n", mmc_hostname(host->mmc),
+			host->data->flags & MMC_DATA_READ ? "rx" : "tx");
 		host->data->error = -EIO;
 		pxamci_data_done(host, 0);
 	}

@@ -626,6 +631,7 @@ static int pxamci_probe(struct platform_device *pdev)
 	struct pxamci_host *host = NULL;
 	struct resource *r, *dmarx, *dmatx;
 	int ret, irq, gpio_cd = -1, gpio_ro = -1, gpio_power = -1;
+	dma_cap_mask_t mask;
 
 	ret = pxamci_of_init(pdev);
 	if (ret)

@@ -671,7 +677,6 @@ static int pxamci_probe(struct platform_device *pdev)
 
 	host = mmc_priv(mmc);
 	host->mmc = mmc;
-	host->dma = -1;
 	host->pdata = pdev->dev.platform_data;
 	host->clkrt = CLKRT_OFF;
 

@@ -702,12 +707,6 @@ static int pxamci_probe(struct platform_device *pdev)
 				     MMC_CAP_SD_HIGHSPEED;
 	}
 
-	host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL);
-	if (!host->sg_cpu) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
 	spin_lock_init(&host->lock);
 	host->res = r;
 	host->irq = irq;

@@ -728,32 +727,50 @@ static int pxamci_probe(struct platform_device *pdev)
 	writel(64, host->base + MMC_RESTO);
 	writel(host->imask, host->base + MMC_I_MASK);
 
-	host->dma = pxa_request_dma(DRIVER_NAME, DMA_PRIO_LOW,
-				    pxamci_dma_irq, host);
-	if (host->dma < 0) {
-		ret = -EBUSY;
-		goto out;
-	}
-
 	ret = request_irq(host->irq, pxamci_irq, 0, DRIVER_NAME, host);
 	if (ret)
 		goto out;
 
 	platform_set_drvdata(pdev, mmc);
 
-	dmarx = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-	if (!dmarx) {
-		ret = -ENXIO;
+	if (!pdev->dev.of_node) {
+		dmarx = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+		if (!dmarx) {
+			ret = -ENXIO;
+			goto out;
+		}
+		host->dma_drcmrrx = dmarx->start;
+
+		dmatx = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+		if (!dmatx) {
+			ret = -ENXIO;
+			goto out;
+		}
+		host->dma_drcmrtx = dmatx->start;
+	}
+
+	dma_cap_zero(mask);
+	dma_cap_set(DMA_SLAVE, mask);
+
+	host->dma_chan_rx =
+		dma_request_slave_channel_compat(mask, mmp_pdma_filter_fn,
+						 &host->dma_drcmrrx,
+						 &pdev->dev, "rx");
+	if (host->dma_chan_rx == NULL) {
+		dev_err(&pdev->dev, "unable to request rx dma channel\n");
+		ret = -ENODEV;
 		goto out;
 	}
-	host->dma_drcmrrx = dmarx->start;
 
-	dmatx = platform_get_resource(pdev, IORESOURCE_DMA, 1);
-	if (!dmatx) {
-		ret = -ENXIO;
+	host->dma_chan_tx =
+		dma_request_slave_channel_compat(mask, mmp_pdma_filter_fn,
+						 &host->dma_drcmrtx,
+						 &pdev->dev, "tx");
+	if (host->dma_chan_tx == NULL) {
+		dev_err(&pdev->dev, "unable to request tx dma channel\n");
+		ret = -ENODEV;
 		goto out;
 	}
-	host->dma_drcmrtx = dmatx->start;
 
 	if (host->pdata) {
 		gpio_cd = host->pdata->gpio_card_detect;

@@ -814,12 +831,12 @@ err_gpio_ro:
 	gpio_free(gpio_power);
  out:
 	if (host) {
-		if (host->dma >= 0)
-			pxa_free_dma(host->dma);
+		if (host->dma_chan_rx)
+			dma_release_channel(host->dma_chan_rx);
+		if (host->dma_chan_tx)
+			dma_release_channel(host->dma_chan_tx);
 		if (host->base)
 			iounmap(host->base);
-		if (host->sg_cpu)
-			dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
 		if (host->clk)
 			clk_put(host->clk);
 	}

@@ -863,13 +880,12 @@ static int pxamci_remove(struct platform_device *pdev)
 		       END_CMD_RES|PRG_DONE|DATA_TRAN_DONE,
 		       host->base + MMC_I_MASK);
 
-		DRCMR(host->dma_drcmrrx) = 0;
-		DRCMR(host->dma_drcmrtx) = 0;
-
 		free_irq(host->irq, host);
-		pxa_free_dma(host->dma);
+		dmaengine_terminate_all(host->dma_chan_rx);
+		dmaengine_terminate_all(host->dma_chan_tx);
+		dma_release_channel(host->dma_chan_rx);
+		dma_release_channel(host->dma_chan_tx);
 		iounmap(host->base);
-		dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
 
 		clk_put(host->clk);
 

index 942ef94..906c0b5 100644
@@ -28,76 +28,43 @@
 #include <linux/gpio.h>
 #include <linux/slab.h>
 #include <linux/completion.h>
+#include <linux/dmaengine.h>
+#include <linux/dma-mapping.h>
+#include <linux/dma/mmp-pdma.h>
 
 #include <scsi/scsi_host.h>
 
 #include <mach/pxa2xx-regs.h>
 #include <linux/platform_data/ata-pxa.h>
-#include <mach/dma.h>
 
 #define DRV_NAME	"pata_pxa"
 #define DRV_VERSION	"0.1"
 
 struct pata_pxa_data {
-	uint32_t		dma_channel;
-	struct pxa_dma_desc	*dma_desc;
-	dma_addr_t		dma_desc_addr;
-	uint32_t		dma_desc_id;
+	struct dma_chan		*dma_channel;
+	unsigned int		dma_dir;
+	unsigned int		dma_len;
+	dma_cookie_t		dma_cookie;
 
 	/* DMA IO physical address */
 	uint32_t		dma_io_addr;
-	/* PXA DREQ<0:2> pin selector */
-	uint32_t		dma_dreq;
-	/* DMA DCSR register value */
-	uint32_t		dma_dcsr;
 
+	struct ata_port		*ap;
 	struct completion	dma_done;
 };
 
 /*
- * Setup the DMA descriptors. The size is transfer capped at 4k per descriptor,
- * if the transfer is longer, it is split into multiple chained descriptors.
+ * DMA interrupt handler.
  */
-static void pxa_load_dmac(struct scatterlist *sg, struct ata_queued_cmd *qc)
+static void pxa_ata_dma_irq(void *param)
 {
+	struct ata_queued_cmd *qc = param;
 	struct pata_pxa_data *pd = qc->ap->private_data;
 
-	uint32_t cpu_len, seg_len;
-	dma_addr_t cpu_addr;
-
-	cpu_addr = sg_dma_address(sg);
-	cpu_len = sg_dma_len(sg);
-
-	do {
-		seg_len = (cpu_len > 0x1000) ? 0x1000 : cpu_len;
-
-		pd->dma_desc[pd->dma_desc_id].ddadr = pd->dma_desc_addr +
-			((pd->dma_desc_id + 1) * sizeof(struct pxa_dma_desc));
-
-		pd->dma_desc[pd->dma_desc_id].dcmd = DCMD_BURST32 |
-					DCMD_WIDTH2 | (DCMD_LENGTH & seg_len);
-
-		if (qc->tf.flags & ATA_TFLAG_WRITE) {
-			pd->dma_desc[pd->dma_desc_id].dsadr = cpu_addr;
-			pd->dma_desc[pd->dma_desc_id].dtadr = pd->dma_io_addr;
-			pd->dma_desc[pd->dma_desc_id].dcmd |= DCMD_INCSRCADDR |
-						DCMD_FLOWTRG;
-		} else {
-			pd->dma_desc[pd->dma_desc_id].dsadr = pd->dma_io_addr;
-			pd->dma_desc[pd->dma_desc_id].dtadr = cpu_addr;
-			pd->dma_desc[pd->dma_desc_id].dcmd |= DCMD_INCTRGADDR |
-						DCMD_FLOWSRC;
-		}
-
-		cpu_len -= seg_len;
-		cpu_addr += seg_len;
-		pd->dma_desc_id++;
-
-	} while (cpu_len);
+	dma_unmap_sg(pd->dma_channel->device->dev,
+		     qc->sg, pd->dma_len, pd->dma_dir);
 
-	/* Should not happen */
-	if (seg_len & 0x1f)
-		DALGN |= (1 << pd->dma_dreq);
+	complete(&pd->dma_done);
 }
 
 /*

@@ -106,28 +73,51 @@ static void pxa_load_dmac(struct scatterlist *sg, struct ata_queued_cmd *qc)
 static void pxa_qc_prep(struct ata_queued_cmd *qc)
 {
 	struct pata_pxa_data *pd = qc->ap->private_data;
-	int si = 0;
-	struct scatterlist *sg;
+	struct dma_slave_config	config;
+	struct dma_async_tx_descriptor *tx;
+	struct dma_chan *chan = pd->dma_channel;
+	int ret;
 
 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))
 		return;
 
-	pd->dma_desc_id = 0;
-
-	DCSR(pd->dma_channel) = 0;
-	DALGN &= ~(1 << pd->dma_dreq);
+	memset(&config, 0, sizeof(config));
+
+	if (qc->tf.flags & ATA_TFLAG_WRITE) {
+		config.dst_maxburst = 32;
+		config.dst_addr = pd->dma_io_addr;
+		config.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+		config.direction = DMA_MEM_TO_DEV;
+		pd->dma_dir = DMA_TO_DEVICE;
+	} else {
+		config.src_maxburst = 32;
+		config.src_addr = pd->dma_io_addr;
+		config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+		config.direction = DMA_DEV_TO_MEM;
+		pd->dma_dir = DMA_FROM_DEVICE;
+	}
 
-	for_each_sg(qc->sg, sg, qc->n_elem, si)
-		pxa_load_dmac(sg, qc);
+	ret = dmaengine_slave_config(chan, &config);
+	if (ret < 0) {
+		pr_err("dmaengine_slave_config() failed\n");
+		return;
+	}
 
-	pd->dma_desc[pd->dma_desc_id - 1].ddadr = DDADR_STOP;
+	pd->dma_len = dma_map_sg(chan->device->dev, qc->sg, qc->n_elem,
+				 pd->dma_dir);
 
-	/* Fire IRQ only at the end of last block */
-	pd->dma_desc[pd->dma_desc_id - 1].dcmd |= DCMD_ENDIRQEN;
+	tx = dmaengine_prep_slave_sg(chan, qc->sg, pd->dma_len,
+				     config.direction,
+				     DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+	if (tx == NULL) {
+		pr_err("dmaengine_prep_slave_sg() failed\n");
+		return;
+	}
 
-	DDADR(pd->dma_channel) = pd->dma_desc_addr;
-	DRCMR(pd->dma_dreq) = DRCMR_MAPVLD | pd->dma_channel;
+	tx->callback = pxa_ata_dma_irq;
+	tx->callback_param = pd->ap;
 
+	pd->dma_cookie = dmaengine_submit(tx);
 }
 
 /*

@@ -146,7 +136,7 @@ static void pxa_bmdma_start(struct ata_queued_cmd *qc)
 {
 	struct pata_pxa_data *pd = qc->ap->private_data;
 	init_completion(&pd->dma_done);
-	DCSR(pd->dma_channel) = DCSR_RUN;
+	dma_async_issue_pending(pd->dma_channel);
 }
 
 /*

@@ -155,12 +145,7 @@ static void pxa_bmdma_start(struct ata_queued_cmd *qc)
 static void pxa_bmdma_stop(struct ata_queued_cmd *qc)
 {
 	struct pata_pxa_data *pd = qc->ap->private_data;
-
-	if ((DCSR(pd->dma_channel) & DCSR_RUN) &&
-		wait_for_completion_timeout(&pd->dma_done, HZ))
-		dev_err(qc->ap->dev, "Timeout waiting for DMA completion!");
-
-	DCSR(pd->dma_channel) = 0;
+	dmaengine_terminate_all(pd->dma_channel);
 }
 
 /*

@@ -171,8 +156,12 @@ static unsigned char pxa_bmdma_status(struct ata_port *ap)
 {
 	struct pata_pxa_data *pd = ap->private_data;
 	unsigned char ret = ATA_DMA_INTR;
+	struct dma_tx_state tx_state;
+	enum dma_status status;
 
-	if (pd->dma_dcsr & DCSR_BUSERR)
+	status = dmaengine_tx_status(pd->dma_channel, pd->dma_cookie,
+				     &tx_state);
+	if (status == DMA_ERROR)
 		ret |= ATA_DMA_ERR;
 
 	return ret;

@@ -214,21 +203,6 @@ static struct ata_port_operations pxa_ata_port_ops = {
 	.qc_prep		= pxa_qc_prep,
 };
 
-/*
- * DMA interrupt handler.
- */
-static void pxa_ata_dma_irq(int dma, void *port)
-{
-	struct ata_port *ap = port;
-	struct pata_pxa_data *pd = ap->private_data;
-
-	pd->dma_dcsr = DCSR(dma);
-	DCSR(dma) = pd->dma_dcsr;
-
-	if (pd->dma_dcsr & DCSR_STOPSTATE)
-		complete(&pd->dma_done);
-}
-
 static int pxa_ata_probe(struct platform_device *pdev)
 {
 	struct ata_host *host;

@@ -239,6 +213,7 @@ static int pxa_ata_probe(struct platform_device *pdev)
 	struct resource *dma_res;
 	struct resource *irq_res;
 	struct pata_pxa_pdata *pdata = pdev->dev.platform_data;
+	dma_cap_mask_t mask;
 	int ret = 0;
 
 	/*

@@ -333,38 +308,30 @@ static int pxa_ata_probe(struct platform_device *pdev)
 	if (!data)
 		return -ENOMEM;
 
+	data->ap = ap;
 	ap->private_data = data;
-	data->dma_dreq = pdata->dma_dreq;
 	data->dma_io_addr = dma_res->start;
 
 	/*
-	 * Allocate space for the DMA descriptors
-	 */
-	data->dma_desc = dmam_alloc_coherent(&pdev->dev, PAGE_SIZE,
-					&data->dma_desc_addr, GFP_KERNEL);
-	if (!data->dma_desc)
-		return -EINVAL;
-
-	/*
 	 * Request the DMA channel
 	 */
-	data->dma_channel = pxa_request_dma(DRV_NAME, DMA_PRIO_LOW,
-						pxa_ata_dma_irq, ap);
-	if (data->dma_channel < 0)
+	dma_cap_zero(mask);
+	dma_cap_set(DMA_SLAVE, mask);
+
+	data->dma_channel =
+		dma_request_slave_channel_compat(mask, mmp_pdma_filter_fn,
+						 &pdata->dma_dreq, &pdev->dev,
+						 "data");
+	if (data->dma_channel == NULL)
 		return -EBUSY;
 
 	/*
-	 * Stop and clear the DMA channel
-	 */
-	DCSR(data->dma_channel) = 0;
-
-	/*
 	 * Activate the ATA host
 	 */
 	ret = ata_host_activate(host, irq_res->start, ata_sff_interrupt,
 				pdata->irq_flags, &pxa_ata_sht);
 	if (ret)
-		pxa_free_dma(data->dma_channel);
+		dma_release_channel(data->dma_channel);
 
 	return ret;
 }

@@ -374,7 +341,8 @@ static int pxa_ata_remove(struct platform_device *pdev)
 	struct ata_host *host = platform_get_drvdata(pdev);
 	struct pata_pxa_data *data = host->ports[0]->private_data;
 
-	pxa_free_dma(data->dma_channel);
+	dmaengine_terminate_all(data->dma_channel);
+	dma_release_channel(data->dma_channel);
 
 	ata_host_detach(host);
 

index 964b116..d77a342 100644
@@ -21,13 +21,15 @@
 #include <linux/clk.h>
 #include <linux/gpio.h>
 #include <linux/slab.h>
+#include <linux/dmaengine.h>
+#include <linux/dma-mapping.h>
+#include <linux/dma/mmp-pdma.h>
 
 #include <net/irda/irda.h>
 #include <net/irda/irmod.h>
 #include <net/irda/wrapper.h>
 #include <net/irda/irda_device.h>
 
-#include <mach/dma.h>
 #include <linux/platform_data/irda-pxaficp.h>
 #include <mach/regs-ost.h>
 #include <mach/regs-uart.h>

@@ -99,6 +101,9 @@
                 IrSR_RCVEIR_UART_MODE | \
                 IrSR_XMITIR_IR_MODE)
 
+/* FIXME */
+extern void pxa2xx_transceiver_mode(struct device *dev, int mode);
+
 struct pxa_irda {
 	int			speed;
 	int			newspeed;

@@ -109,8 +114,10 @@ struct pxa_irda {
 	dma_addr_t		dma_rx_buff_phy;
 	dma_addr_t		dma_tx_buff_phy;
 	unsigned int		dma_tx_buff_len;
-	int			txdma;
-	int			rxdma;
+	struct dma_chan		*txdma;
+	struct dma_chan		*rxdma;
+	dma_cookie_t		dma_rx_cookie;
+	dma_cookie_t		dma_tx_cookie;
 
 	int			uart_irq;
 	int			icp_irq;

@@ -122,6 +129,7 @@ struct pxa_irda {
 	iobuff_t		rx_buff;
 
 	struct device		*dev;
+	struct net_device	*net_dev;
 	struct pxaficp_platform_data *pdata;
 	struct clk		*fir_clk;
 	struct clk		*sir_clk;

@@ -147,26 +155,121 @@ static inline void pxa_irda_enable_sirclk(struct pxa_irda *si)
 	clk_prepare_enable(si->sir_clk);
 }
 
-
 #define IS_FIR(si)		((si)->speed >= 4000000)
 #define IRDA_FRAME_SIZE_LIMIT	2047
 
 inline static void pxa_irda_fir_dma_rx_start(struct pxa_irda *si)
 {
-	DCSR(si->rxdma)  = DCSR_NODESC;
-	DSADR(si->rxdma) = __PREG(ICDR);
-	DTADR(si->rxdma) = si->dma_rx_buff_phy;
-	DCMD(si->rxdma) = DCMD_INCTRGADDR | DCMD_FLOWSRC |  DCMD_WIDTH1 | DCMD_BURST32 | IRDA_FRAME_SIZE_LIMIT;
-	DCSR(si->rxdma) |= DCSR_RUN;
+	struct dma_async_tx_descriptor *tx;
+	struct dma_slave_config config;
+	struct dma_device *dma_dev;
+	int ret;
+
+	dma_dev = si->rxdma->device;
+
+	memset(&config, 0, sizeof(config));
+	config.src_maxburst = 32;
+	config.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+	config.direction = DMA_DEV_TO_MEM;
+
+	ret = dmaengine_slave_config(si->rxdma, &config);
+	if (ret < 0) {
+		dev_err(si->dev, "dmaengine_slave_config() failed: %d\n", ret);
+		return;
+	}
+
+	tx = dma_dev->device_prep_dma_memcpy(si->rxdma, __PREG(ICDR),
+					     si->dma_rx_buff_phy,
+					     IRDA_FRAME_SIZE_LIMIT, 0);
+	if (!tx) {
+		dev_err(si->dev, "device_prep_dma_memcpy() failed: %d\n", ret);
+		return;
+	}
+
+	si->dma_rx_cookie = dmaengine_submit(tx);
+	dma_async_issue_pending(si->rxdma);
+}
+
+static int pxa_irda_set_speed(struct pxa_irda *si, int speed);
+
+/* FIR Transmit DMA interrupt handler */
+static void pxa_irda_fir_dma_tx_irq(void *param)
+{
+	struct net_device *dev = param;
+	struct pxa_irda *si = netdev_priv(dev);
+	struct dma_tx_state tx_state;
+	enum dma_status status;
+
+	status = dmaengine_tx_status(si->txdma, si->dma_tx_cookie, &tx_state);
+	if (status == DMA_ERROR) {
+		dev->stats.tx_errors++;
+	} else {
+		dev->stats.tx_packets++;
+		dev->stats.tx_bytes += si->dma_tx_buff_len;
+	}
+
+	while (ICSR1 & ICSR1_TBY)
+		cpu_relax();
+	si->last_oscr = readl_relaxed(OSCR);
+
+	/*
+	 * HACK: It looks like the TBY bit is dropped too soon.
+	 * Without this delay things break.
+	 */
+	udelay(120);
+
+	if (si->newspeed) {
+		pxa_irda_set_speed(si, si->newspeed);
+		si->newspeed = 0;
+	} else {
+		int i = 64;
+
+		ICCR0 = 0;
+		pxa_irda_fir_dma_rx_start(si);
+		while ((ICSR1 & ICSR1_RNE) && i--)
+			(void)ICDR;
+		ICCR0 = ICCR0_ITR | ICCR0_RXE;
+
+		if (i < 0)
+			printk(KERN_ERR "pxa_ir: cannot clear Rx FIFO!\n");
+	}
+	netif_wake_queue(dev);
 }
 
+
 inline static void pxa_irda_fir_dma_tx_start(struct pxa_irda *si)
 {
-	DCSR(si->txdma)  = DCSR_NODESC;
-	DSADR(si->txdma) = si->dma_tx_buff_phy;
-	DTADR(si->txdma) = __PREG(ICDR);
-	DCMD(si->txdma) = DCMD_INCSRCADDR | DCMD_FLOWTRG |  DCMD_ENDIRQEN | DCMD_WIDTH1 | DCMD_BURST32 | si->dma_tx_buff_len;
-	DCSR(si->txdma) |= DCSR_RUN;
+	struct dma_async_tx_descriptor *tx;
+	struct dma_slave_config config;
+	struct dma_device *dma_dev;
+	int ret;
+
+	dma_dev = si->txdma->device;
+
+	memset(&config, 0, sizeof(config));
+	config.dst_maxburst = 32;
+	config.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+	config.direction = DMA_MEM_TO_DEV;
+
+	ret = dmaengine_slave_config(si->txdma, &config);
+	if (ret < 0) {
+		dev_err(si->dev, "dmaengine_slave_config() failed: %d\n", ret);
+		return;
+	}
+
+	tx = dma_dev->device_prep_dma_memcpy(si->txdma, __PREG(ICDR),
+					     si->dma_tx_buff_phy,
+					     si->dma_tx_buff_len, 0);
+	if (!tx) {
+		dev_err(si->dev, "device_prep_dma_memcpy() failed: %d\n", ret);
+		return;
+	}
+
+	tx->callback = pxa_irda_fir_dma_tx_irq;
+	tx->callback_param = si->net_dev;
+
+	si->dma_tx_cookie = dmaengine_submit(tx);
+	dma_async_issue_pending(si->txdma);
 }
 
 /*

@@ -205,7 +308,7 @@ static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
 
 		if (IS_FIR(si)) {
 			/* stop RX DMA */
-			DCSR(si->rxdma) &= ~DCSR_RUN;
+			dmaengine_terminate_all(si->rxdma);
 			/* disable FICP */
 			ICCR0 = 0;
 			pxa_irda_disable_clk(si);

@@ -344,68 +447,18 @@ static irqreturn_t pxa_irda_sir_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-/* FIR Receive DMA interrupt handler */
-static void pxa_irda_fir_dma_rx_irq(int channel, void *data)
-{
-	int dcsr = DCSR(channel);
-
-	DCSR(channel) = dcsr & ~DCSR_RUN;
-
-	printk(KERN_DEBUG "pxa_ir: fir rx dma bus error %#x\n", dcsr);
-}
-
-/* FIR Transmit DMA interrupt handler */
-static void pxa_irda_fir_dma_tx_irq(int channel, void *data)
-{
-	struct net_device *dev = data;
-	struct pxa_irda *si = netdev_priv(dev);
-	int dcsr;
-
-	dcsr = DCSR(channel);
-	DCSR(channel) = dcsr & ~DCSR_RUN;
-
-	if (dcsr & DCSR_ENDINTR)  {
-		dev->stats.tx_packets++;
-		dev->stats.tx_bytes += si->dma_tx_buff_len;
-	} else {
-		dev->stats.tx_errors++;
-	}
-
-	while (ICSR1 & ICSR1_TBY)
-		cpu_relax();
-	si->last_oscr = readl_relaxed(OSCR);
-
-	/*
-	 * HACK: It looks like the TBY bit is dropped too soon.
-	 * Without this delay things break.
-	 */
-	udelay(120);
-
-	if (si->newspeed) {
-		pxa_irda_set_speed(si, si->newspeed);
-		si->newspeed = 0;
-	} else {
-		int i = 64;
-
-		ICCR0 = 0;
-		pxa_irda_fir_dma_rx_start(si);
-		while ((ICSR1 & ICSR1_RNE) && i--)
-			(void)ICDR;
-		ICCR0 = ICCR0_ITR | ICCR0_RXE;
-
-		if (i < 0)
-			printk(KERN_ERR "pxa_ir: cannot clear Rx FIFO!\n");
-	}
-	netif_wake_queue(dev);
-}
-
 /* EIF(Error in FIFO/End in Frame) handler for FIR */
 static void pxa_irda_fir_irq_eif(struct pxa_irda *si, struct net_device *dev, int icsr0)
 {
 	unsigned int len, stat, data;
+	struct dma_tx_state tx_state;
+	enum dma_status status;
+
+	status = dmaengine_tx_status(si->rxdma, si->dma_rx_cookie,
+				     &tx_state);
 
 	/* Get the current data position. */
-	len = DTADR(si->rxdma) - si->dma_rx_buff_phy;
+	len = IRDA_FRAME_SIZE_LIMIT - tx_state.residue;
 
 	do {
 		/* Read Status, and then Data. 	 */

@@ -472,7 +525,7 @@ static irqreturn_t pxa_irda_fir_irq(int irq, void *dev_id)
 	int icsr0, i = 64;
 
 	/* stop RX DMA */
-	DCSR(si->rxdma) &= ~DCSR_RUN;
+	dmaengine_terminate_all(si->rxdma);
 	si->last_oscr = readl_relaxed(OSCR);
 	icsr0 = ICSR0;
 

@@ -553,7 +606,7 @@ static int pxa_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
 				cpu_relax();
 
 		/* stop RX DMA,  disable FICP */
-		DCSR(si->rxdma) &= ~DCSR_RUN;
+		dmaengine_terminate_all(si->rxdma);
 		ICCR0 = 0;
 
 		pxa_irda_fir_dma_tx_start(si);

@@ -626,10 +679,6 @@ static void pxa_irda_startup(struct pxa_irda *si)
 	/* configure FICP ICCR2 */
 	ICCR2 = ICCR2_TXP | ICCR2_TRIG_32;
 
-	/* configure DMAC */
-	DRCMR(17) = si->rxdma | DRCMR_MAPVLD;
-	DRCMR(18) = si->txdma | DRCMR_MAPVLD;
-
 	/* force SIR reinitialization */
 	si->speed = 4000000;
 	pxa_irda_set_speed(si, 9600);

@@ -649,17 +698,15 @@ static void pxa_irda_shutdown(struct pxa_irda *si)
 	STISR = 0;
 
 	/* disable DMA */
-	DCSR(si->txdma) &= ~DCSR_RUN;
-	DCSR(si->rxdma) &= ~DCSR_RUN;
+	dmaengine_terminate_all(si->rxdma);
+	dmaengine_terminate_all(si->txdma);
+
 	/* disable FICP */
 	ICCR0 = 0;
 
 	/* disable the STUART or FICP clocks */
 	pxa_irda_disable_clk(si);
 
-	DRCMR(17) = 0;
-	DRCMR(18) = 0;
-
 	local_irq_restore(flags);
 
 	/* power off board transceiver */

@@ -671,7 +718,8 @@ static void pxa_irda_shutdown(struct pxa_irda *si)
 static int pxa_irda_start(struct net_device *dev)
 {
 	struct pxa_irda *si = netdev_priv(dev);
-	int err;
+	dma_cap_mask_t mask;
+	int drcmr, err;
 
 	si->speed = 9600;
 

@@ -689,13 +737,21 @@ static int pxa_irda_start(struct net_device *dev)
 	disable_irq(si->uart_irq);
 	disable_irq(si->icp_irq);
 
+	dma_cap_zero(mask);
+	dma_cap_set(DMA_SLAVE, mask);
+
 	err = -EBUSY;
-	si->rxdma = pxa_request_dma("FICP_RX",DMA_PRIO_LOW, pxa_irda_fir_dma_rx_irq, dev);
-	if (si->rxdma < 0)
+
+	drcmr = 17;
+	si->rxdma = dma_request_slave_channel_compat(mask, mmp_pdma_filter_fn,
+						     &drcmr, si->dev, "rx");
+	if (si->rxdma == NULL)
 		goto err_rx_dma;
 
-	si->txdma = pxa_request_dma("FICP_TX",DMA_PRIO_LOW, pxa_irda_fir_dma_tx_irq, dev);
-	if (si->txdma < 0)
+	drcmr = 18;
+	si->rxdma = dma_request_slave_channel_compat(mask, mmp_pdma_filter_fn,
+						     &drcmr, si->dev, "rx");
+	if (si->txdma == NULL)
 		goto err_tx_dma;
 
 	err = -ENOMEM;

@@ -737,9 +793,9 @@ err_irlap:
 err_dma_tx_buff:
 	dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_rx_buff, si->dma_rx_buff_phy);
 err_dma_rx_buff:
-	pxa_free_dma(si->txdma);
+	dma_release_channel(si->txdma);
 err_tx_dma:
-	pxa_free_dma(si->rxdma);
+	dma_release_channel(si->rxdma);
 err_rx_dma:
 	free_irq(si->icp_irq, dev);
 err_irq2:

@@ -766,8 +822,11 @@ static int pxa_irda_stop(struct net_device *dev)
 	free_irq(si->uart_irq, dev);
 	free_irq(si->icp_irq, dev);
 
-	pxa_free_dma(si->rxdma);
-	pxa_free_dma(si->txdma);
+	dmaengine_terminate_all(si->rxdma);
+	dmaengine_terminate_all(si->txdma);
+
+	dma_release_channel(si->rxdma);
+	dma_release_channel(si->txdma);
 
 	if (si->dma_rx_buff)
 		dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_tx_buff, si->dma_tx_buff_phy);

@@ -855,6 +914,7 @@ static int pxa_irda_probe(struct platform_device *pdev)
 	si = netdev_priv(dev);
 	si->dev = &pdev->dev;
 	si->pdata = pdev->dev.platform_data;
+	si->net_dev = dev;
 
 	si->uart_irq = platform_get_irq(pdev, 0);
 	si->icp_irq = platform_get_irq(pdev, 1);

index cde13be..2d1e073 100644
@@ -2015,17 +2015,17 @@ static int smc_probe(struct net_device *dev, void __iomem *ioaddr,
       	if (retval)
       		goto err_out;
 
-#ifdef CONFIG_ARCH_PXA
-#  ifdef SMC_USE_PXA_DMA
-	lp->cfg.flags |= SMC91X_USE_DMA;
-#  endif
 	if (lp->cfg.flags & SMC91X_USE_DMA) {
-		int dma = pxa_request_dma(dev->name, DMA_PRIO_LOW,
-					  smc_pxa_dma_irq, NULL);
-		if (dma >= 0)
-			dev->dma = dma;
+		dma_cap_mask_t mask;
+
+		dma_cap_zero(mask);
+		dma_cap_set(DMA_MEMCPY, mask);
+		lp->dma_channel = dma_request_channel(mask, NULL, NULL);
+
+		if (!lp->dma_channel)
+			printk("%s(): request of DMA channel failed\n",
+				__func__);
 	}
-#endif
 
 	retval = register_netdev(dev);
 	if (retval == 0) {

@@ -2034,9 +2034,6 @@ static int smc_probe(struct net_device *dev, void __iomem *ioaddr,
 			dev->name, version_string, revision_register & 0x0f,
 			lp->base, dev->irq);
 
-		if (dev->dma != (unsigned char)-1)
-			printk(" DMA %d", dev->dma);
-
 		printk("%s%s\n",
 			lp->cfg.flags & SMC91X_NOWAIT ? " [nowait]" : "",
 			THROTTLE_TX_PKTS ? " [throttle_tx]" : "");

@@ -2060,10 +2057,6 @@ static int smc_probe(struct net_device *dev, void __iomem *ioaddr,
 	}
 
 err_out:
-#ifdef CONFIG_ARCH_PXA
-	if (retval && dev->dma != (unsigned char)-1)
-		pxa_free_dma(dev->dma);
-#endif
 	return retval;
 }
 

@@ -2282,14 +2275,6 @@ static int smc_drv_probe(struct platform_device *pdev)
 		goto out_release_attrib;
 	}
 
-#ifdef CONFIG_ARCH_PXA
-	{
-		struct smc_local *lp = netdev_priv(ndev);
-		lp->device = &pdev->dev;
-		lp->physaddr = res->start;
-	}
-#endif
-
 	ret = smc_probe(ndev, addr, irq_flags);
 	if (ret != 0)
 		goto out_iounmap;

@@ -2320,12 +2305,11 @@ static int smc_drv_remove(struct platform_device *pdev)
 
 	unregister_netdev(ndev);
 
+	if (lp->dma_channel)
+		dma_release_channel(lp->dma_channel);
+
 	free_irq(ndev->irq, ndev);
 
-#ifdef CONFIG_ARCH_PXA
-	if (ndev->dma != (unsigned char)-1)
-		pxa_free_dma(ndev->dma);
-#endif
 	iounmap(lp->base);
 
 	smc_release_datacs(pdev,ndev);

122 lines not on this page · raw message

index 345558f..19cdf8f 100644
@@ -1178,9 +1178,9 @@ static irqreturn_t smc911x_interrupt(int irq, void *dev_id)
 
 #ifdef SMC_USE_DMA
 static void
-smc911x_tx_dma_irq(int dma, void *data)
+smc911x_tx_dma_irq(void *param)
 {
-	struct net_device *dev = (struct net_device *)data;
+	struct net_device *dev = (struct net_device *) param;
 	struct smc911x_local *lp = netdev_priv(dev);
 	struct sk_buff *skb = lp->current_tx_skb;
 	unsigned long flags;

@@ -1189,7 +1189,6 @@ smc911x_tx_dma_irq(int dma, void *data)
 
 	DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, "%s: TX DMA irq handler\n", dev->name);
 	/* Clear the DMA interrupt sources */
-	SMC_DMA_ACK_IRQ(dev, dma);
 	BUG_ON(skb == NULL);
 	dma_unmap_single(NULL, tx_dmabuf, tx_dmalen, DMA_TO_DEVICE);
 	dev->trans_start = jiffies;

@@ -1212,10 +1211,9 @@ smc911x_tx_dma_irq(int dma, void *data)
 		"%s: TX DMA irq completed\n", dev->name);
 }
 static void
-smc911x_rx_dma_irq(int dma, void *data)
+smc911x_rx_dma_irq(void *param)
 {
-	struct net_device *dev = (struct net_device *)data;
-	unsigned long ioaddr = dev->base_addr;
+	struct net_device *dev = (struct net_device *) param;
 	struct smc911x_local *lp = netdev_priv(dev);
 	struct sk_buff *skb = lp->current_rx_skb;
 	unsigned long flags;

@@ -1224,7 +1222,6 @@ smc911x_rx_dma_irq(int dma, void *data)
 	DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
 	DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, "%s: RX DMA irq handler\n", dev->name);
 	/* Clear the DMA interrupt sources */
-	SMC_DMA_ACK_IRQ(dev, dma);
 	dma_unmap_single(NULL, rx_dmabuf, rx_dmalen, DMA_FROM_DEVICE);
 	BUG_ON(skb == NULL);
 	lp->current_rx_skb = NULL;

@@ -1754,6 +1751,37 @@ static int smc911x_findirq(struct net_device *dev)
 	return probe_irq_off(cookie);
 }
 
+#ifdef SMC_USE_DMA
+static void smc_alloc_dma(struct net_device *dev,
+			  struct smc911x_local *lp)
+{
+	dma_cap_mask_t mask;
+
+	dma_cap_zero(mask);
+	dma_cap_set(DMA_MEMCPY, mask);
+
+	lp->rxdma = dma_request_channel(mask, NULL, NULL);
+	if (!lp->rxdma) {
+		printk("%s(): unable to allocate RX channel\n", __func__);
+		return;
+	}
+
+	lp->txdma = dma_request_channel(mask, NULL, NULL);
+	if (!lp->txdma) {
+		printk("%s(): unable to allocate TX channel\n", __func__);
+		return;
+	}
+
+	lp->rxdma_active = 0;
+	lp->txdma_active = 0;
+}
+#else
+static inline void smc_alloc_dma(struct net_device *dev,
+				 struct smc911x_local *lp)
+{
+}
+#endif
+
 static const struct net_device_ops smc911x_netdev_ops = {
 	.ndo_open		= smc911x_open,
 	.ndo_stop		= smc911x_close,

@@ -1969,13 +1997,7 @@ static int smc911x_probe(struct net_device *dev)
 	if (retval)
 		goto err_out;
 
-#ifdef SMC_USE_DMA
-	lp->rxdma = SMC_DMA_REQUEST(dev, smc911x_rx_dma_irq);
-	lp->txdma = SMC_DMA_REQUEST(dev, smc911x_tx_dma_irq);
-	lp->rxdma_active = 0;
-	lp->txdma_active = 0;
-	dev->dma = lp->rxdma;
-#endif
+	smc_alloc_dma(dev, lp);
 
 	retval = register_netdev(dev);
 	if (retval == 0) {

@@ -1985,11 +2007,11 @@ static int smc911x_probe(struct net_device *dev)
 			dev->base_addr, dev->irq);
 
 #ifdef SMC_USE_DMA
-		if (lp->rxdma != -1)
-			printk(" RXDMA %d ", lp->rxdma);
+		if (lp->rxdma)
+			printk(" RXDMA %p", lp->rxdma);
 
-		if (lp->txdma != -1)
-			printk("TXDMA %d", lp->txdma);
+		if (lp->txdma)
+			printk("TXDMA %p", lp->txdma);
 #endif
 		printk("\n");
 		if (!is_valid_ether_addr(dev->dev_addr)) {

@@ -2013,11 +2035,14 @@ static int smc911x_probe(struct net_device *dev)
 err_out:
 #ifdef SMC_USE_DMA
 	if (retval) {
-		if (lp->rxdma != -1) {
-			SMC_DMA_FREE(dev, lp->rxdma);
+		if (lp->rxdma) {
+			dmaengine_terminate_all(lp->rxdma);
+			dma_release_channel(lp->rxdma);
 		}
-		if (lp->txdma != -1) {
-			SMC_DMA_FREE(dev, lp->txdma);
+
+		if (lp->txdma) {
+			dmaengine_terminate_all(lp->txdma);
+			dma_release_channel(lp->txdma);
 		}
 	}
 #endif

@@ -2119,12 +2144,11 @@ static int smc911x_drv_remove(struct platform_device *pdev)
 
 #ifdef SMC_USE_DMA
 	{
-		if (lp->rxdma != -1) {
-			SMC_DMA_FREE(dev, lp->rxdma);
-		}
-		if (lp->txdma != -1) {
-			SMC_DMA_FREE(dev, lp->txdma);
-		}
+		if (lp->rxdma)
+			dma_release_channel(lp->rxdma);
+
+		if (lp->txdma)
+			dma_release_channel(lp->txdma);
 	}
 #endif
 	iounmap(lp->base);

133 lines not on this page · raw message

index 6f4dd75..82b9985 100644
@@ -21,6 +21,7 @@
 #include <linux/clk.h>
 #include <linux/io.h>
 #include <linux/pxa2xx_ssp.h>
+#include <linux/of.h>
 
 #include <asm/irq.h>
 

@@ -798,6 +799,12 @@ static const struct snd_soc_component_driver pxa_ssp_component = {
 	.name		= "pxa-ssp",
 };
 
+#ifdef CONFIG_OF
+static const struct of_device_id pxa_ssp_of_ids[] = {
+	{ .compatible = "mrvl,pxa-ssp-dai" },
+};
+#endif
+
 static int asoc_ssp_probe(struct platform_device *pdev)
 {
 	return snd_soc_register_component(&pdev->dev, &pxa_ssp_component,

@@ -812,8 +819,9 @@ static int asoc_ssp_remove(struct platform_device *pdev)
 
 static struct platform_driver asoc_ssp_driver = {
 	.driver = {
-			.name = "pxa-ssp-dai",
-			.owner = THIS_MODULE,
+		.name = "pxa-ssp-dai",
+		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(pxa_ssp_of_ids),
 	},
 
 	.probe = asoc_ssp_probe,

index 2fd3d25..56e818e 100644
@@ -6,13 +6,6 @@
 
 /* PCM */
 
-struct pxa2xx_pcm_dma_params {
-	char *name;			/* stream identifier */
-	u32 dcmd;			/* DMA descriptor dcmd field */
-	volatile u32 *drcmr;		/* the DMA request channel to use */
-	u32 dev_addr;			/* device physical address for DMA */
-};
-
 extern int __pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream,
 				struct snd_pcm_hw_params *params);
 extern int __pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream);

index ce431e6..5066a37 100644
@@ -14,12 +14,14 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/dmaengine.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/ac97_codec.h>
 #include <sound/initval.h>
 #include <sound/pxa2xx-lib.h>
+#include <sound/dmaengine_pcm.h>
 
 #include <mach/regs-ac97.h>
 #include <mach/audio.h>

@@ -41,20 +43,20 @@ static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
 	.reset	= pxa2xx_ac97_reset,
 };
 
-static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_out = {
-	.name			= "AC97 PCM out",
-	.dev_addr		= __PREG(PCDR),
-	.drcmr			= &DRCMR(12),
-	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
-				  DCMD_BURST32 | DCMD_WIDTH4,
+static unsigned long pxa2xx_ac97_pcm_out_req = 12;
+static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_out = {
+	.addr		= __PREG(PCDR),
+	.addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES,
+	.maxburst	= 32,
+	.filter_data	= &pxa2xx_ac97_pcm_out_req,
 };
 
-static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_in = {
-	.name			= "AC97 PCM in",
-	.dev_addr		= __PREG(PCDR),
-	.drcmr			= &DRCMR(11),
-	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
-				  DCMD_BURST32 | DCMD_WIDTH4,
+static unsigned long pxa2xx_ac97_pcm_in_req = 11;
+static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_in = {
+	.addr		= __PREG(PCDR),
+	.addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES,
+	.maxburst	= 32,
+	.filter_data	= &pxa2xx_ac97_pcm_in_req,
 };
 
 static struct snd_pcm *pxa2xx_ac97_pcm;

110 lines not on this page · raw message

index 26422a3..69a2455 100644
@@ -11,8 +11,11 @@
  */
 
 #include <linux/module.h>
+#include <linux/dmaengine.h>
+
 #include <sound/core.h>
 #include <sound/pxa2xx-lib.h>
+#include <sound/dmaengine_pcm.h>
 
 #include "pxa2xx-pcm.h"
 

@@ -40,7 +43,7 @@ static int pxa2xx_pcm_open(struct snd_pcm_substream *substream)
 
 	rtd->params = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
 		      client->playback_params : client->capture_params;
-	ret = pxa_request_dma(rtd->params->name, DMA_PRIO_LOW,
+	ret = pxa_request_dma("dma", DMA_PRIO_LOW,
 			      pxa2xx_pcm_dma_irq, substream);
 	if (ret < 0)
 		goto err2;

index 65f86b5..2a8fc08 100644
@@ -13,14 +13,14 @@
 
 struct pxa2xx_runtime_data {
 	int dma_ch;
-	struct pxa2xx_pcm_dma_params *params;
+	struct snd_dmaengine_dai_dma_data *params;
 	pxa_dma_desc *dma_desc_array;
 	dma_addr_t dma_desc_array_phys;
 };
 
 struct pxa2xx_pcm_client {
-	struct pxa2xx_pcm_dma_params *playback_params;
-	struct pxa2xx_pcm_dma_params *capture_params;
+	struct snd_dmaengine_dai_dma_data *playback_params;
+	struct snd_dmaengine_dai_dma_data *capture_params;
 	int (*startup)(struct snd_pcm_substream *);
 	void (*shutdown)(struct snd_pcm_substream *);
 	int (*prepare)(struct snd_pcm_substream *);

index 5d57e07..9a97843 100644
@@ -17,6 +17,8 @@
 #include <linux/dmaengine.h>
 #include <linux/platform_data/dma-mmp_tdma.h>
 #include <linux/platform_data/mmp_audio.h>
+#include <linux/dmaengine.h>
+
 #include <sound/pxa2xx-lib.h>
 #include <sound/core.h>
 #include <sound/pcm.h>

@@ -67,7 +69,7 @@ static int mmp_pcm_hw_params(struct snd_pcm_substream *substream,
 {
 	struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct pxa2xx_pcm_dma_params *dma_params;
+	struct snd_dmaengine_dai_dma_data *dma_params;
 	struct dma_slave_config slave_config;
 	int ret;
 

@@ -80,10 +82,10 @@ static int mmp_pcm_hw_params(struct snd_pcm_substream *substream,
 		return ret;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		slave_config.dst_addr     = dma_params->dev_addr;
+		slave_config.dst_addr     = dma_params->addr;
 		slave_config.dst_maxburst = 4;
 	} else {
-		slave_config.src_addr	  = dma_params->dev_addr;
+		slave_config.src_addr	  = dma_params->addr;
 		slave_config.src_maxburst = 4;
 	}
 

index 62142ce..84f1e9e 100644
@@ -27,12 +27,15 @@
 #include <linux/slab.h>
 #include <linux/pxa2xx_ssp.h>
 #include <linux/io.h>
+#include <linux/dmaengine.h>
+
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/initval.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/pxa2xx-lib.h>
+#include <sound/dmaengine_pcm.h>
 #include "mmp-sspa.h"
 
 /*

@@ -40,7 +43,7 @@
  */
 struct sspa_priv {
 	struct ssp_device *sspa;
-	struct pxa2xx_pcm_dma_params *dma_params;
+	struct snd_dmaengine_dai_dma_data *dma_params;
 	struct clk *audio_clk;
 	struct clk *sysclk;
 	int dai_fmt;

@@ -266,7 +269,7 @@ static int mmp_sspa_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 	struct sspa_priv *sspa_priv = snd_soc_dai_get_drvdata(dai);
 	struct ssp_device *sspa = sspa_priv->sspa;
-	struct pxa2xx_pcm_dma_params *dma_params;
+	struct snd_dmaengine_dai_dma_data *dma_params;
 	u32 sspa_ctrl;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)

@@ -309,7 +312,7 @@ static int mmp_sspa_hw_params(struct snd_pcm_substream *substream,
 	}
 
 	dma_params = &sspa_priv->dma_params[substream->stream];
-	dma_params->dev_addr = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
+	dma_params->addr = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
 				(sspa->phys_base + SSPA_TXD) :
 				(sspa->phys_base + SSPA_RXD);
 	snd_soc_dai_set_dma_data(cpu_dai, substream, dma_params);

@@ -425,7 +428,8 @@ static int asoc_mmp_sspa_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	priv->dma_params = devm_kzalloc(&pdev->dev,
-			2 * sizeof(struct pxa2xx_pcm_dma_params), GFP_KERNEL);
+			2 * sizeof(struct snd_dmaengine_dai_dma_data),
+			GFP_KERNEL);
 	if (priv->dma_params == NULL)
 		return -ENOMEM;
 

index 82b9985..3903343 100644
@@ -22,6 +22,7 @@
 #include <linux/io.h>
 #include <linux/pxa2xx_ssp.h>
 #include <linux/of.h>
+#include <linux/dmaengine.h>
 
 #include <asm/irq.h>
 

@@ -31,9 +32,9 @@
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/pxa2xx-lib.h>
+#include <sound/dmaengine_pcm.h>
 
 #include <mach/hardware.h>
-#include <mach/dma.h>
 
 #include "../../arm/pxa2xx-pcm.h"
 #include "pxa-ssp.h"

@@ -80,27 +81,14 @@ static void pxa_ssp_disable(struct ssp_device *ssp)
 	__raw_writel(sscr0, ssp->mmio_base + SSCR0);
 }
 
-struct pxa2xx_pcm_dma_data {
-	struct pxa2xx_pcm_dma_params params;
-	char name[20];
-};
-
 static void pxa_ssp_set_dma_params(struct ssp_device *ssp, int width4,
-			int out, struct pxa2xx_pcm_dma_params *dma_data)
+			int out, struct snd_dmaengine_dai_dma_data *dma)
 {
-	struct pxa2xx_pcm_dma_data *dma;
-
-	dma = container_of(dma_data, struct pxa2xx_pcm_dma_data, params);
-
-	snprintf(dma->name, 20, "SSP%d PCM %s %s", ssp->port_id,
-			width4 ? "32-bit" : "16-bit", out ? "out" : "in");
-
-	dma->params.name = dma->name;
-	dma->params.drcmr = &DRCMR(out ? ssp->drcmr_tx : ssp->drcmr_rx);
-	dma->params.dcmd = (out ? (DCMD_INCSRCADDR | DCMD_FLOWTRG) :
-				  (DCMD_INCTRGADDR | DCMD_FLOWSRC)) |
-			(width4 ? DCMD_WIDTH4 : DCMD_WIDTH2) | DCMD_BURST16;
-	dma->params.dev_addr = ssp->phys_base + SSDR;
+	dma->filter_data = out ? &ssp->drcmr_tx : &ssp->drcmr_rx;
+	dma->addr_width = width4 ? DMA_SLAVE_BUSWIDTH_4_BYTES :
+				   DMA_SLAVE_BUSWIDTH_2_BYTES;
+	dma->maxburst = 16;
+	dma->addr = ssp->phys_base + SSDR;
 }
 
 static int pxa_ssp_startup(struct snd_pcm_substream *substream,

@@ -108,7 +96,7 @@ static int pxa_ssp_startup(struct snd_pcm_substream *substream,
 {
 	struct ssp_priv *priv = snd_soc_dai_get_drvdata(cpu_dai);
 	struct ssp_device *ssp = priv->ssp;
-	struct pxa2xx_pcm_dma_data *dma;
+	struct snd_dmaengine_dai_dma_data *dma;
 	int ret = 0;
 
 	if (!cpu_dai->active) {

@@ -116,10 +104,10 @@ static int pxa_ssp_startup(struct snd_pcm_substream *substream,
 		pxa_ssp_disable(ssp);
 	}
 
-	dma = kzalloc(sizeof(struct pxa2xx_pcm_dma_data), GFP_KERNEL);
+	dma = kzalloc(sizeof(struct snd_dmaengine_dai_dma_data), GFP_KERNEL);
 	if (!dma)
 		return -ENOMEM;
-	snd_soc_dai_set_dma_data(cpu_dai, substream, &dma->params);
+	snd_soc_dai_set_dma_data(cpu_dai, substream, dma);
 
 	return ret;
 }

@@ -560,7 +548,7 @@ static int pxa_ssp_hw_params(struct snd_pcm_substream *substream,
 	u32 sspsp;
 	int width = snd_pcm_format_physical_width(params_format(params));
 	int ttsa = pxa_ssp_read_reg(ssp, SSTSA) & 0xf;
-	struct pxa2xx_pcm_dma_params *dma_data;
+	struct snd_dmaengine_dai_dma_data *dma_data;
 
 	dma_data = snd_soc_dai_get_dma_data(cpu_dai, substream);
 

107 lines not on this page · raw message

index f7ca716..d5340a0 100644
@@ -23,9 +23,9 @@
 #include <sound/initval.h>
 #include <sound/soc.h>
 #include <sound/pxa2xx-lib.h>
+#include <sound/dmaengine_pcm.h>
 
 #include <mach/hardware.h>
-#include <mach/dma.h>
 #include <mach/audio.h>
 
 #include "pxa2xx-i2s.h"

@@ -82,20 +82,20 @@ static struct pxa_i2s_port pxa_i2s;
 static struct clk *clk_i2s;
 static int clk_ena = 0;
 
-static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = {
-	.name			= "I2S PCM Stereo out",
-	.dev_addr		= __PREG(SADR),
-	.drcmr			= &DRCMR(3),
-	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
-				  DCMD_BURST32 | DCMD_WIDTH4,
+static unsigned long pxa2xx_i2s_pcm_stereo_out_req = 3;
+static struct snd_dmaengine_dai_dma_data pxa2xx_i2s_pcm_stereo_out = {
+	.addr		= __PREG(SADR),
+	.addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES,
+	.maxburst	= 32,
+	.filter_data	= &pxa2xx_i2s_pcm_stereo_out_req,
 };
 
-static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_in = {
-	.name			= "I2S PCM Stereo in",
-	.dev_addr		= __PREG(SADR),
-	.drcmr			= &DRCMR(2),
-	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
-				  DCMD_BURST32 | DCMD_WIDTH4,
+static unsigned long pxa2xx_i2s_pcm_stereo_in_req = 2;
+static struct snd_dmaengine_dai_dma_data pxa2xx_i2s_pcm_stereo_in = {
+	.addr		= __PREG(SADR),
+	.addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES,
+	.maxburst	= 32,
+	.filter_data	= &pxa2xx_i2s_pcm_stereo_in_req,
 };
 
 static int pxa2xx_i2s_startup(struct snd_pcm_substream *substream,

@@ -163,7 +163,7 @@ static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
 				struct snd_pcm_hw_params *params,
 				struct snd_soc_dai *dai)
 {
-	struct pxa2xx_pcm_dma_params *dma_data;
+	struct snd_dmaengine_dai_dma_data *dma_data;
 
 	BUG_ON(IS_ERR(clk_i2s));
 	clk_prepare_enable(clk_i2s);