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-rw-r--r--drivers/dma/at_hdmac.c9
-rw-r--r--drivers/dma/at_xdmac.c1
-rw-r--r--drivers/dma/coh901318.c20
-rw-r--r--drivers/dma/dmaengine.c33
-rw-r--r--drivers/dma/dw/core.c16
-rw-r--r--drivers/dma/fsldma.c6
-rw-r--r--drivers/dma/fsldma.h4
-rw-r--r--drivers/dma/imx-dma.c5
-rw-r--r--drivers/dma/imx-sdma.c84
-rw-r--r--drivers/dma/ioat/dma_v3.c11
-rw-r--r--drivers/dma/k3dma.c14
-rw-r--r--drivers/dma/mmp_tdma.c3
-rw-r--r--drivers/dma/mxs-dma.c4
-rw-r--r--drivers/dma/of-dma.c4
-rw-r--r--drivers/dma/s3c24xx-dma.c2
-rw-r--r--drivers/dma/sa11x0-dma.c21
-rw-r--r--drivers/dma/sh/rcar-hpbdma.c6
-rw-r--r--drivers/dma/sh/shdmac.c9
-rw-r--r--drivers/dma/tegra20-apb-dma.c15
-rw-r--r--include/linux/dmaengine.h38
20 files changed, 181 insertions, 124 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 86450b3442f2..1e1a4c567542 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -42,6 +42,11 @@
#define ATC_DEFAULT_CFG (ATC_FIFOCFG_HALFFIFO)
#define ATC_DEFAULT_CTRLB (ATC_SIF(AT_DMA_MEM_IF) \
|ATC_DIF(AT_DMA_MEM_IF))
+#define ATC_DMA_BUSWIDTHS\
+ (BIT(DMA_SLAVE_BUSWIDTH_UNDEFINED) |\
+ BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |\
+ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |\
+ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
/*
* Initial number of descriptors to allocate for each channel. This could
@@ -1531,6 +1536,10 @@ static int __init at_dma_probe(struct platform_device *pdev)
atdma->dma_common.device_pause = atc_pause;
atdma->dma_common.device_resume = atc_resume;
atdma->dma_common.device_terminate_all = atc_terminate_all;
+ atdma->dma_common.src_addr_widths = ATC_DMA_BUSWIDTHS;
+ atdma->dma_common.dst_addr_widths = ATC_DMA_BUSWIDTHS;
+ atdma->dma_common.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+ atdma->dma_common.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
}
dma_writel(atdma, EN, AT_DMA_ENABLE);
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
index 8c799f66a6dc..c39000b9980a 100644
--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c
@@ -1516,7 +1516,6 @@ static struct platform_driver at_xdmac_driver = {
.remove = at_xdmac_remove,
.driver = {
.name = "at_xdmac",
- .owner = THIS_MODULE,
.of_match_table = of_match_ptr(atmel_xdmac_dt_ids),
.pm = &atmel_xdmac_dev_pm_ops,
}
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c
index 418e4e4fb7ba..fd22dd36985f 100644
--- a/drivers/dma/coh901318.c
+++ b/drivers/dma/coh901318.c
@@ -1690,7 +1690,7 @@ static u32 coh901318_get_bytes_left(struct dma_chan *chan)
* Pauses a transfer without losing data. Enables power save.
* Use this function in conjunction with coh901318_resume.
*/
-static void coh901318_pause(struct dma_chan *chan)
+static int coh901318_pause(struct dma_chan *chan)
{
u32 val;
unsigned long flags;
@@ -1730,12 +1730,13 @@ static void coh901318_pause(struct dma_chan *chan)
enable_powersave(cohc);
spin_unlock_irqrestore(&cohc->lock, flags);
+ return 0;
}
/* Resumes a transfer that has been stopped via 300_dma_stop(..).
Power save is handled.
*/
-static void coh901318_resume(struct dma_chan *chan)
+static int coh901318_resume(struct dma_chan *chan)
{
u32 val;
unsigned long flags;
@@ -1760,6 +1761,7 @@ static void coh901318_resume(struct dma_chan *chan)
}
spin_unlock_irqrestore(&cohc->lock, flags);
+ return 0;
}
bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
@@ -2512,8 +2514,8 @@ static const struct burst_table burst_sizes[] = {
},
};
-static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
- struct dma_slave_config *config)
+static int coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
+ struct dma_slave_config *config)
{
struct coh901318_chan *cohc = to_coh901318_chan(chan);
dma_addr_t addr;
@@ -2533,7 +2535,7 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
maxburst = config->dst_maxburst;
} else {
dev_err(COHC_2_DEV(cohc), "illegal channel mode\n");
- return;
+ return -EINVAL;
}
dev_dbg(COHC_2_DEV(cohc), "configure channel for %d byte transfers\n",
@@ -2579,7 +2581,7 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
default:
dev_err(COHC_2_DEV(cohc),
"bad runtimeconfig: alien address width\n");
- return;
+ return -EINVAL;
}
ctrl |= burst_sizes[i].reg;
@@ -2589,10 +2591,12 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
cohc->addr = addr;
cohc->ctrl = ctrl;
+
+ return 0;
}
-void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
- struct coh901318_base *base)
+static void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
+ struct coh901318_base *base)
{
int chans_i;
int i = 0;
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 30211f9791b7..f15712f2fec6 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -479,6 +479,39 @@ static void dma_channel_rebalance(void)
}
}
+int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps)
+{
+ struct dma_device *device;
+
+ if (!chan || !caps)
+ return -EINVAL;
+
+ device = chan->device;
+
+ /* check if the channel supports slave transactions */
+ if (!test_bit(DMA_SLAVE, device->cap_mask.bits))
+ return -ENXIO;
+
+ /*
+ * Check whether it reports it uses the generic slave
+ * capabilities, if not, that means it doesn't support any
+ * kind of slave capabilities reporting.
+ */
+ if (!device->directions)
+ return -ENXIO;
+
+ caps->src_addr_widths = device->src_addr_widths;
+ caps->dst_addr_widths = device->dst_addr_widths;
+ caps->directions = device->directions;
+ caps->residue_granularity = device->residue_granularity;
+
+ caps->cmd_pause = !!device->device_pause;
+ caps->cmd_terminate = !!device->device_terminate_all;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dma_get_slave_caps);
+
static struct dma_chan *private_candidate(const dma_cap_mask_t *mask,
struct dma_device *dev,
dma_filter_fn fn, void *fn_param)
diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
index 4bc307745ef1..fcb9a916e6f6 100644
--- a/drivers/dma/dw/core.c
+++ b/drivers/dma/dw/core.c
@@ -61,6 +61,13 @@
*/
#define NR_DESCS_PER_CHANNEL 64
+/* The set of bus widths supported by the DMA controller */
+#define DW_DMA_BUSWIDTHS \
+ BIT(DMA_SLAVE_BUSWIDTH_UNDEFINED) | \
+ BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
+ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
+ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES)
+
/*----------------------------------------------------------------------*/
static struct device *chan2dev(struct dma_chan *chan)
@@ -1660,8 +1667,8 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
dw->dma.device_free_chan_resources = dwc_free_chan_resources;
dw->dma.device_prep_dma_memcpy = dwc_prep_dma_memcpy;
-
dw->dma.device_prep_slave_sg = dwc_prep_slave_sg;
+
dw->dma.device_config = dwc_config;
dw->dma.device_pause = dwc_pause;
dw->dma.device_resume = dwc_resume;
@@ -1670,6 +1677,13 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
dw->dma.device_tx_status = dwc_tx_status;
dw->dma.device_issue_pending = dwc_issue_pending;
+ /* DMA capabilities */
+ dw->dma.src_addr_widths = DW_DMA_BUSWIDTHS;
+ dw->dma.dst_addr_widths = DW_DMA_BUSWIDTHS;
+ dw->dma.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV) |
+ BIT(DMA_MEM_TO_MEM);
+ dw->dma.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
+
err = dma_async_device_register(&dw->dma);
if (err)
goto err_dma_register;
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index b891079a166d..300f821f1890 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -944,7 +944,6 @@ fail:
static int fsl_dma_device_terminate_all(struct dma_chan *dchan)
{
struct fsldma_chan *chan;
- int size;
if (!dchan)
return -EINVAL;
@@ -1372,6 +1371,11 @@ static int fsldma_of_probe(struct platform_device *op)
fdev->common.device_terminate_all = fsl_dma_device_terminate_all;
fdev->common.dev = &op->dev;
+ fdev->common.src_addr_widths = FSL_DMA_BUSWIDTHS;
+ fdev->common.dst_addr_widths = FSL_DMA_BUSWIDTHS;
+ fdev->common.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+ fdev->common.residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR;
+
dma_set_mask(&(op->dev), DMA_BIT_MASK(36));
platform_set_drvdata(op, fdev);
diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h
index 239c20c84382..31bffccdcc75 100644
--- a/drivers/dma/fsldma.h
+++ b/drivers/dma/fsldma.h
@@ -83,6 +83,10 @@
#define FSL_DMA_DGSR_EOSI 0x02
#define FSL_DMA_DGSR_EOLSI 0x01
+#define FSL_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
+ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
+ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) | \
+ BIT(DMA_SLAVE_BUSWIDTH_8_BYTES))
typedef u64 __bitwise v64;
typedef u32 __bitwise v32;
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 02d1f73bd12b..eed405976ea9 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -230,11 +230,6 @@ static inline int is_imx1_dma(struct imxdma_engine *imxdma)
return imxdma->devtype == IMX1_DMA;
}
-static inline int is_imx21_dma(struct imxdma_engine *imxdma)
-{
- return imxdma->devtype == IMX21_DMA;
-}
-
static inline int is_imx27_dma(struct imxdma_engine *imxdma)
{
return imxdma->devtype == IMX27_DMA;
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 1748a4bd475f..18c0a131e4e4 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1296,15 +1296,15 @@ static void sdma_load_firmware(const struct firmware *fw, void *context)
if (header->ram_code_start + header->ram_code_size > fw->size)
goto err_firmware;
switch (header->version_major) {
- case 1:
- sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1;
- break;
- case 2:
- sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V2;
- break;
- default:
- dev_err(sdma->dev, "unknown firmware version\n");
- goto err_firmware;
+ case 1:
+ sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1;
+ break;
+ case 2:
+ sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V2;
+ break;
+ default:
+ dev_err(sdma->dev, "unknown firmware version\n");
+ goto err_firmware;
}
addr = (void *)header + header->script_addrs_start;
@@ -1472,7 +1472,7 @@ static int sdma_probe(struct platform_device *pdev)
if (ret)
return ret;
- sdma = kzalloc(sizeof(*sdma), GFP_KERNEL);
+ sdma = devm_kzalloc(&pdev->dev, sizeof(*sdma), GFP_KERNEL);
if (!sdma)
return -ENOMEM;
@@ -1481,48 +1481,34 @@ static int sdma_probe(struct platform_device *pdev)
sdma->dev = &pdev->dev;
sdma->drvdata = drvdata;
- iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
- if (!iores || irq < 0) {
- ret = -EINVAL;
- goto err_irq;
- }
+ if (irq < 0)
+ return irq;
- if (!request_mem_region(iores->start, resource_size(iores), pdev->name)) {
- ret = -EBUSY;
- goto err_request_region;
- }
+ iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ sdma->regs = devm_ioremap_resource(&pdev->dev, iores);
+ if (IS_ERR(sdma->regs))
+ return PTR_ERR(sdma->regs);
sdma->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
- if (IS_ERR(sdma->clk_ipg)) {
- ret = PTR_ERR(sdma->clk_ipg);
- goto err_clk;
- }
+ if (IS_ERR(sdma->clk_ipg))
+ return PTR_ERR(sdma->clk_ipg);
sdma->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
- if (IS_ERR(sdma->clk_ahb)) {
- ret = PTR_ERR(sdma->clk_ahb);
- goto err_clk;
- }
+ if (IS_ERR(sdma->clk_ahb))
+ return PTR_ERR(sdma->clk_ahb);
clk_prepare(sdma->clk_ipg);
clk_prepare(sdma->clk_ahb);
- sdma->regs = ioremap(iores->start, resource_size(iores));
- if (!sdma->regs) {
- ret = -ENOMEM;
- goto err_ioremap;
- }
-
- ret = request_irq(irq, sdma_int_handler, 0, "sdma", sdma);
+ ret = devm_request_irq(&pdev->dev, irq, sdma_int_handler, 0, "sdma",
+ sdma);
if (ret)
- goto err_request_irq;
+ return ret;
sdma->script_addrs = kzalloc(sizeof(*sdma->script_addrs), GFP_KERNEL);
- if (!sdma->script_addrs) {
- ret = -ENOMEM;
- goto err_alloc;
- }
+ if (!sdma->script_addrs)
+ return -ENOMEM;
/* initially no scripts available */
saddr_arr = (s32 *)sdma->script_addrs;
@@ -1595,6 +1581,10 @@ static int sdma_probe(struct platform_device *pdev)
sdma->dma_device.device_prep_dma_cyclic = sdma_prep_dma_cyclic;
sdma->dma_device.device_config = sdma_config;
sdma->dma_device.device_terminate_all = sdma_disable_channel;
+ sdma->dma_device.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+ sdma->dma_device.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+ sdma->dma_device.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+ sdma->dma_device.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
sdma->dma_device.device_issue_pending = sdma_issue_pending;
sdma->dma_device.dev->dma_parms = &sdma->dma_parms;
dma_set_max_seg_size(sdma->dma_device.dev, 65535);
@@ -1623,38 +1613,22 @@ err_register:
dma_async_device_unregister(&sdma->dma_device);
err_init:
kfree(sdma->script_addrs);
-err_alloc:
- free_irq(irq, sdma);
-err_request_irq:
- iounmap(sdma->regs);
-err_ioremap:
-err_clk:
- release_mem_region(iores->start, resource_size(iores));
-err_request_region:
-err_irq:
- kfree(sdma);
return ret;
}
static int sdma_remove(struct platform_device *pdev)
{
struct sdma_engine *sdma = platform_get_drvdata(pdev);
- struct resource *iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- int irq = platform_get_irq(pdev, 0);
int i;
dma_async_device_unregister(&sdma->dma_device);
kfree(sdma->script_addrs);
- free_irq(irq, sdma);
- iounmap(sdma->regs);
- release_mem_region(iores->start, resource_size(iores));
/* Kill the tasklet */
for (i = 0; i < MAX_DMA_CHANNELS; i++) {
struct sdma_channel *sdmac = &sdma->channel[i];
tasklet_kill(&sdmac->tasklet);
}
- kfree(sdma);
platform_set_drvdata(pdev, NULL);
dev_info(&pdev->dev, "Removed...\n");
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index 32eae38291e5..be307182231e 100644
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -489,6 +489,7 @@ static void ioat3_eh(struct ioat2_dma_chan *ioat)
struct ioat_chan_common *chan = &ioat->base;
struct pci_dev *pdev = to_pdev(chan);
struct ioat_dma_descriptor *hw;
+ struct dma_async_tx_descriptor *tx;
u64 phys_complete;
struct ioat_ring_ent *desc;
u32 err_handled = 0;
@@ -534,6 +535,16 @@ static void ioat3_eh(struct ioat2_dma_chan *ioat)
dev_err(to_dev(chan), "%s: fatal error (%x:%x)\n",
__func__, chanerr, err_handled);
BUG();
+ } else { /* cleanup the faulty descriptor */
+ tx = &desc->txd;
+ if (tx->cookie) {
+ dma_cookie_complete(tx);
+ dma_descriptor_unmap(tx);
+ if (tx->callback) {
+ tx->callback(tx->callback_param);
+ tx->callback = NULL;
+ }
+ }
}
writel(chanerr, chan->reg_base + IOAT_CHANERR_OFFSET);
diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
index 49be7f687c4c..6f7f43529ccb 100644
--- a/drivers/dma/k3dma.c
+++ b/drivers/dma/k3dma.c
@@ -601,7 +601,7 @@ static int k3_dma_terminate_all(struct dma_chan *chan)
return 0;
}
-static int k3_dma_pause(struct dma_chan *chan)
+static int k3_dma_transfer_pause(struct dma_chan *chan)
{
struct k3_dma_chan *c = to_k3_chan(chan);
struct k3_dma_dev *d = to_k3_dma(chan->device);
@@ -622,7 +622,7 @@ static int k3_dma_pause(struct dma_chan *chan)
return 0;
}
-static int k3_dma_resume(struct dma_chan *chan)
+static int k3_dma_transfer_resume(struct dma_chan *chan)
{
struct k3_dma_chan *c = to_k3_chan(chan);
struct k3_dma_dev *d = to_k3_dma(chan->device);
@@ -735,8 +735,8 @@ static int k3_dma_probe(struct platform_device *op)
d->slave.device_prep_slave_sg = k3_dma_prep_slave_sg;
d->slave.device_issue_pending = k3_dma_issue_pending;
d->slave.device_config = k3_dma_config;
- d->slave.device_pause = k3_dma_pause;
- d->slave.device_resume = k3_dma_resume;
+ d->slave.device_pause = k3_dma_transfer_pause;
+ d->slave.device_resume = k3_dma_transfer_resume;
d->slave.device_terminate_all = k3_dma_terminate_all;
d->slave.copy_align = DMA_ALIGN;
@@ -804,7 +804,7 @@ static int k3_dma_remove(struct platform_device *op)
}
#ifdef CONFIG_PM_SLEEP
-static int k3_dma_suspend(struct device *dev)
+static int k3_dma_suspend_dev(struct device *dev)
{
struct k3_dma_dev *d = dev_get_drvdata(dev);
u32 stat = 0;
@@ -820,7 +820,7 @@ static int k3_dma_suspend(struct device *dev)
return 0;
}
-static int k3_dma_resume(struct device *dev)
+static int k3_dma_resume_dev(struct device *dev)
{
struct k3_dma_dev *d = dev_get_drvdata(dev);
int ret = 0;
@@ -835,7 +835,7 @@ static int k3_dma_resume(struct device *dev)
}
#endif
-static SIMPLE_DEV_PM_OPS(k3_dma_pmops, k3_dma_suspend, k3_dma_resume);
+static SIMPLE_DEV_PM_OPS(k3_dma_pmops, k3_dma_suspend_dev, k3_dma_resume_dev);
static struct platform_driver k3_pdma_driver = {
.driver = {
diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index a8a79b1763d5..70c2fa9963cd 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -19,7 +19,6 @@
#include <linux/dmaengine.h>
#include <linux/platform_device.h>
#include <linux/device.h>
-#include <mach/regs-icu.h>
#include <linux/platform_data/dma-mmp_tdma.h>
#include <linux/of_device.h>
#include <linux/of_dma.h>
@@ -472,6 +471,8 @@ static int mmp_tdma_terminate_all(struct dma_chan *chan)
mmp_tdma_disable_chan(chan);
/* disable interrupt */
mmp_tdma_enable_irq(tdmac, false);
+
+ return 0;
}
static int mmp_tdma_config(struct dma_chan *chan,
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 599ffb5b7848..829ec686dac3 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -848,6 +848,10 @@ static int __init mxs_dma_probe(struct platform_device *pdev)
mxs_dma->dma_device.device_pause = mxs_dma_pause_chan;
mxs_dma->dma_device.device_resume = mxs_dma_resume_chan;
mxs_dma->dma_device.device_terminate_all = mxs_dma_terminate_all;
+ mxs_dma->dma_device.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+ mxs_dma->dma_device.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+ mxs_dma->dma_device.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+ mxs_dma->dma_device.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
mxs_dma->dma_device.device_issue_pending = mxs_dma_enable_chan;
ret = dma_async_device_register(&mxs_dma->dma_device);
diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c
index d5fbeaa1e7ba..ca31f1b45366 100644
--- a/drivers/dma/of-dma.c
+++ b/drivers/dma/of-dma.c
@@ -159,6 +159,10 @@ struct dma_chan *of_dma_request_slave_channel(struct device_node *np,
return ERR_PTR(-ENODEV);
}
+ /* Silently fail if there is not even the "dmas" property */
+ if (!of_find_property(np, "dmas", NULL))
+ return ERR_PTR(-ENODEV);
+
count = of_property_count_strings(np, "dma-names");
if (count < 0) {
pr_err("%s: dma-names property of node '%s' missing or empty\n",
diff --git a/drivers/dma/s3c24xx-dma.c b/drivers/dma/s3c24xx-dma.c
index 231f76acebde..4d5a84815ba7 100644
--- a/drivers/dma/s3c24xx-dma.c
+++ b/drivers/dma/s3c24xx-dma.c
@@ -406,7 +406,7 @@ static int s3c24xx_dma_set_runtime_config(struct dma_chan *chan,
s3cchan->cfg = *config;
out:
- spin_lock_irqrestore(&s3cchan->vc.lock, flags);
+ spin_unlock_irqrestore(&s3cchan->vc.lock, flags);
return ret;
}
diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c
index e229c62d7bad..5adf5407a8cb 100644
--- a/drivers/dma/sa11x0-dma.c
+++ b/drivers/dma/sa11x0-dma.c
@@ -669,8 +669,8 @@ static struct dma_async_tx_descriptor *sa11x0_dma_prep_dma_cyclic(
return vchan_tx_prep(&c->vc, &txd->vd, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
}
-static int sa11x0_dma_slave_config(struct dma_chan *chan,
- struct dma_slave_config *cfg)
+static int sa11x0_dma_device_config(struct dma_chan *chan,
+ struct dma_slave_config *cfg)
{
struct sa11x0_dma_chan *c = to_sa11x0_dma_chan(chan);
u32 ddar = c->ddar & ((0xf << 4) | DDAR_RW);
@@ -706,14 +706,13 @@ static int sa11x0_dma_slave_config(struct dma_chan *chan,
return 0;
}
-static int sa11x0_dma_pause(struct dma_chan *chan)
+static int sa11x0_dma_device_pause(struct dma_chan *chan)
{
struct sa11x0_dma_chan *c = to_sa11x0_dma_chan(chan);
struct sa11x0_dma_dev *d = to_sa11x0_dma(chan->device);
struct sa11x0_dma_phy *p;
LIST_HEAD(head);
unsigned long flags;
- int ret;
dev_dbg(d->slave.dev, "vchan %p: pause\n", &c->vc);
spin_lock_irqsave(&c->vc.lock, flags);
@@ -734,14 +733,13 @@ static int sa11x0_dma_pause(struct dma_chan *chan)
return 0;
}
-static int sa11x0_dma_resume(struct dma_chan *chan)
+static int sa11x0_dma_device_resume(struct dma_chan *chan)
{
struct sa11x0_dma_chan *c = to_sa11x0_dma_chan(chan);
struct sa11x0_dma_dev *d = to_sa11x0_dma(chan->device);
struct sa11x0_dma_phy *p;
LIST_HEAD(head);
unsigned long flags;
- int ret;
dev_dbg(d->slave.dev, "vchan %p: resume\n", &c->vc);
spin_lock_irqsave(&c->vc.lock, flags);
@@ -762,14 +760,13 @@ static int sa11x0_dma_resume(struct dma_chan *chan)
return 0;
}
-static int sa11x0_dma_terminate_all(struct dma_chan *chan)
+static int sa11x0_dma_device_terminate_all(struct dma_chan *chan)
{
struct sa11x0_dma_chan *c = to_sa11x0_dma_chan(chan);
struct sa11x0_dma_dev *d = to_sa11x0_dma(chan->device);
struct sa11x0_dma_phy *p;
LIST_HEAD(head);
unsigned long flags;
- int ret;
dev_dbg(d->slave.dev, "vchan %p: terminate all\n", &c->vc);
/* Clear the tx descriptor lists */
@@ -840,10 +837,10 @@ static int sa11x0_dma_init_dmadev(struct dma_device *dmadev,
dmadev->dev = dev;
dmadev->device_alloc_chan_resources = sa11x0_dma_alloc_chan_resources;
dmadev->device_free_chan_resources = sa11x0_dma_free_chan_resources;
- dmadev->device_config = sa11x0_dma_slave_config;
- dmadev->device_pause = sa11x0_dma_pause;
- dmadev->device_resume = sa11x0_dma_resume;
- dmadev->device_terminate_all = sa11x0_dma_terminate_all;
+ dmadev->device_config = sa11x0_dma_device_config;
+ dmadev->device_pause = sa11x0_dma_device_pause;
+ dmadev->device_resume = sa11x0_dma_device_resume;
+ dmadev->device_terminate_all = sa11x0_dma_device_terminate_all;
dmadev->device_tx_status = sa11x0_dma_tx_status;
dmadev->device_issue_pending = sa11x0_dma_issue_pending;
diff --git a/drivers/dma/sh/rcar-hpbdma.c b/drivers/dma/sh/rcar-hpbdma.c
index 20a6f6f2a018..749f26ecd3b3 100644
--- a/drivers/dma/sh/rcar-hpbdma.c
+++ b/drivers/dma/sh/rcar-hpbdma.c
@@ -534,6 +534,8 @@ static int hpb_dmae_chan_probe(struct hpb_dmae_device *hpbdev, int id)
static int hpb_dmae_probe(struct platform_device *pdev)
{
+ const enum dma_slave_buswidth widths = DMA_SLAVE_BUSWIDTH_1_BYTE |
+ DMA_SLAVE_BUSWIDTH_2_BYTES | DMA_SLAVE_BUSWIDTH_4_BYTES;
struct hpb_dmae_pdata *pdata = pdev->dev.platform_data;
struct hpb_dmae_device *hpbdev;
struct dma_device *dma_dev;
@@ -595,6 +597,10 @@ static int hpb_dmae_probe(struct platform_device *pdev)
dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask);
dma_cap_set(DMA_SLAVE, dma_dev->cap_mask);
+ dma_dev->src_addr_widths = widths;
+ dma_dev->dst_addr_widths = widths;
+ dma_dev->directions = BIT(DMA_MEM_TO_DEV) | BIT(DMA_DEV_TO_MEM);
+ dma_dev->residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR;
hpbdev->shdma_dev.ops = &hpb_dmae_ops;
hpbdev->shdma_dev.desc_size = sizeof(struct hpb_desc);
diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c
index aec8a84784a4..ce4cd6be07cf 100644
--- a/drivers/dma/sh/shdmac.c
+++ b/drivers/dma/sh/shdmac.c
@@ -684,6 +684,10 @@ MODULE_DEVICE_TABLE(of, sh_dmae_of_match);
static int sh_dmae_probe(struct platform_device *pdev)
{
+ const enum dma_slave_buswidth widths =
+ DMA_SLAVE_BUSWIDTH_1_BYTE | DMA_SLAVE_BUSWIDTH_2_BYTES |
+ DMA_SLAVE_BUSWIDTH_4_BYTES | DMA_SLAVE_BUSWIDTH_8_BYTES |
+ DMA_SLAVE_BUSWIDTH_16_BYTES | DMA_SLAVE_BUSWIDTH_32_BYTES;
const struct sh_dmae_pdata *pdata;
unsigned long chan_flag[SH_DMAE_MAX_CHANNELS] = {};
int chan_irq[SH_DMAE_MAX_CHANNELS];
@@ -746,6 +750,11 @@ static int sh_dmae_probe(struct platform_device *pdev)
return PTR_ERR(shdev->dmars);
}
+ dma_dev->src_addr_widths = widths;
+ dma_dev->dst_addr_widths = widths;
+ dma_dev->directions = BIT(DMA_MEM_TO_DEV) | BIT(DMA_DEV_TO_MEM);
+ dma_dev->residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR;
+
if (!pdata->slave_only)
dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask);
if (pdata->slave && pdata->slave_num)
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index 5695fb8a7a24..eaf585e8286b 100644
--- a/drivers/dma/tegra20-apb-dma.c
+++ b/drivers/dma/tegra20-apb-dma.c
@@ -1425,6 +1425,21 @@ static int tegra_dma_probe(struct platform_device *pdev)
tegra_dma_free_chan_resources;
tdma->dma_dev.device_prep_slave_sg = tegra_dma_prep_slave_sg;
tdma->dma_dev.device_prep_dma_cyclic = tegra_dma_prep_dma_cyclic;
+ tdma->dma_dev.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
+ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
+ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) |
+ BIT(DMA_SLAVE_BUSWIDTH_8_BYTES);
+ tdma->dma_dev.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
+ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
+ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) |
+ BIT(DMA_SLAVE_BUSWIDTH_8_BYTES);
+ tdma->dma_dev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+ /*
+ * XXX The hardware appears to support
+ * DMA_RESIDUE_GRANULARITY_BURST-level reporting, but it's
+ * only used by this driver during tegra_dma_terminate_all()
+ */
+ tdma->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT;
tdma->dma_dev.device_config = tegra_dma_slave_config;
tdma->dma_dev.device_terminate_all = tegra_dma_terminate_all;
tdma->dma_dev.device_tx_status = tegra_dma_tx_status;
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index b7724a5d4661..b6997a0cb528 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -761,38 +761,6 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_sg(
src_sg, src_nents, flags);
}
-static inline int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps)
-{
- struct dma_device *device;
-
- if (!chan || !caps)
- return -EINVAL;
-
- device = chan->device;
-
- /* check if the channel supports slave transactions */
- if (!test_bit(DMA_SLAVE, device->cap_mask.bits))
- return -ENXIO;
-
- /*
- * Check whether it reports it uses the generic slave
- * capabilities, if not, that means it doesn't support any
- * kind of slave capabilities reporting.
- */
- if (!device->directions)
- return -ENXIO;
-
- caps->src_addr_widths = device->src_addr_widths;
- caps->dst_addr_widths = device->dst_addr_widths;
- caps->directions = device->directions;
- caps->residue_granularity = device->residue_granularity;
-
- caps->cmd_pause = !!device->device_pause;
- caps->cmd_terminate = !!device->device_terminate_all;
-
- return 0;
-}
-
static inline int dmaengine_terminate_all(struct dma_chan *chan)
{
if (chan->device->device_terminate_all)
@@ -1081,6 +1049,7 @@ struct dma_chan *dma_request_slave_channel_reason(struct device *dev,
const char *name);
struct dma_chan *dma_request_slave_channel(struct device *dev, const char *name);
void dma_release_channel(struct dma_chan *chan);
+int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps);
#else
static inline struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type)
{
@@ -1115,6 +1084,11 @@ static inline struct dma_chan *dma_request_slave_channel(struct device *dev,
static inline void dma_release_channel(struct dma_chan *chan)
{
}
+static inline int dma_get_slave_caps(struct dma_chan *chan,
+ struct dma_slave_caps *caps)
+{
+ return -ENXIO;
+}
#endif
/* --- DMA device --- */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 23:08:38 +0000