aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt1
-rw-r--r--Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt1
-rw-r--r--Documentation/devicetree/bindings/dma/sun6i-dma.txt1
-rw-r--r--drivers/dma/amba-pl08x.c2
-rw-r--r--drivers/dma/at_xdmac.c13
-rw-r--r--drivers/dma/pl330.c2
-rw-r--r--drivers/dma/sh/rcar-dmac.c85
-rw-r--r--drivers/dma/ste_dma40.c4
-rw-r--r--drivers/dma/sun6i-dma.c33
-rw-r--r--drivers/dma/ti-dma-crossbar.c2
-rw-r--r--drivers/dma/xilinx/xilinx_dma.c30
11 files changed, 100 insertions, 74 deletions
diff --git a/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt b/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt
index 79a204d50234..891db41e9420 100644
--- a/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt
+++ b/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt
@@ -25,6 +25,7 @@ Required Properties:
- "renesas,dmac-r8a7794" (R-Car E2)
- "renesas,dmac-r8a7795" (R-Car H3)
- "renesas,dmac-r8a7796" (R-Car M3-W)
+ - "renesas,dmac-r8a77970" (R-Car V3M)
- reg: base address and length of the registers block for the DMAC
diff --git a/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt b/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt
index e7780a186a36..1be6941ac1e5 100644
--- a/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt
+++ b/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt
@@ -8,6 +8,7 @@ Required Properties:
- "renesas,r8a7793-usb-dmac" (R-Car M2-N)
- "renesas,r8a7794-usb-dmac" (R-Car E2)
- "renesas,r8a7795-usb-dmac" (R-Car H3)
+ - "renesas,r8a7796-usb-dmac" (R-Car M3-W)
- reg: base address and length of the registers block for the DMAC
- interrupts: interrupt specifiers for the DMAC, one for each entry in
interrupt-names.
diff --git a/Documentation/devicetree/bindings/dma/sun6i-dma.txt b/Documentation/devicetree/bindings/dma/sun6i-dma.txt
index 6b267045f522..98fbe1a5c6dd 100644
--- a/Documentation/devicetree/bindings/dma/sun6i-dma.txt
+++ b/Documentation/devicetree/bindings/dma/sun6i-dma.txt
@@ -9,6 +9,7 @@ Required properties:
"allwinner,sun8i-a23-dma"
"allwinner,sun8i-a83t-dma"
"allwinner,sun8i-h3-dma"
+ "allwinner,sun8i-v3s-dma"
- reg: Should contain the registers base address and length
- interrupts: Should contain a reference to the interrupt used by this device
- clocks: Should contain a reference to the parent AHB clock
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 13cc95c0474c..b52b0d55247e 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -3033,7 +3033,7 @@ static struct vendor_data vendor_ftdmac020 = {
.max_transfer_size = PL080_CONTROL_TRANSFER_SIZE_MASK,
};
-static struct amba_id pl08x_ids[] = {
+static const struct amba_id pl08x_ids[] = {
/* Samsung PL080S variant */
{
.id = 0x0a141080,
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
index 7d4e0bcda9af..c00e3923d7d8 100644
--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c
@@ -875,7 +875,7 @@ at_xdmac_interleaved_queue_desc(struct dma_chan *chan,
dwidth = at_xdmac_align_width(chan, src | dst | chunk->size);
if (chunk->size >= (AT_XDMAC_MBR_UBC_UBLEN_MAX << dwidth)) {
dev_dbg(chan2dev(chan),
- "%s: chunk too big (%d, max size %lu)...\n",
+ "%s: chunk too big (%zu, max size %lu)...\n",
__func__, chunk->size,
AT_XDMAC_MBR_UBC_UBLEN_MAX << dwidth);
return NULL;
@@ -956,7 +956,7 @@ at_xdmac_prep_interleaved(struct dma_chan *chan,
if ((xt->numf > 1) && (xt->frame_size > 1))
return NULL;
- dev_dbg(chan2dev(chan), "%s: src=%pad, dest=%pad, numf=%d, frame_size=%d, flags=0x%lx\n",
+ dev_dbg(chan2dev(chan), "%s: src=%pad, dest=%pad, numf=%zu, frame_size=%zu, flags=0x%lx\n",
__func__, &xt->src_start, &xt->dst_start, xt->numf,
xt->frame_size, flags);
@@ -990,7 +990,7 @@ at_xdmac_prep_interleaved(struct dma_chan *chan,
dst_skip = chunk->size + dst_icg;
dev_dbg(chan2dev(chan),
- "%s: chunk size=%d, src icg=%d, dst icg=%d\n",
+ "%s: chunk size=%zu, src icg=%zu, dst icg=%zu\n",
__func__, chunk->size, src_icg, dst_icg);
desc = at_xdmac_interleaved_queue_desc(chan, atchan,
@@ -1207,7 +1207,7 @@ at_xdmac_prep_dma_memset(struct dma_chan *chan, dma_addr_t dest, int value,
struct at_xdmac_chan *atchan = to_at_xdmac_chan(chan);
struct at_xdmac_desc *desc;
- dev_dbg(chan2dev(chan), "%s: dest=%pad, len=%d, pattern=0x%x, flags=0x%lx\n",
+ dev_dbg(chan2dev(chan), "%s: dest=%pad, len=%zu, pattern=0x%x, flags=0x%lx\n",
__func__, &dest, len, value, flags);
if (unlikely(!len))
@@ -1883,8 +1883,11 @@ static int atmel_xdmac_resume(struct device *dev)
struct at_xdmac_chan *atchan;
struct dma_chan *chan, *_chan;
int i;
+ int ret;
- clk_prepare_enable(atxdmac->clk);
+ ret = clk_prepare_enable(atxdmac->clk);
+ if (ret)
+ return ret;
/* Clear pending interrupts. */
for (i = 0; i < atxdmac->dma.chancnt; i++) {
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index b19ee04567b5..f122c2a7b9f0 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -3023,7 +3023,7 @@ static int pl330_remove(struct amba_device *adev)
return 0;
}
-static struct amba_id pl330_ids[] = {
+static const struct amba_id pl330_ids[] = {
{
.id = 0x00041330,
.mask = 0x000fffff,
diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index ffcadca53243..2b2c7db3e480 100644
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -1690,6 +1690,15 @@ static int rcar_dmac_chan_probe(struct rcar_dmac *dmac,
if (!irqname)
return -ENOMEM;
+ /*
+ * Initialize the DMA engine channel and add it to the DMA engine
+ * channels list.
+ */
+ chan->device = &dmac->engine;
+ dma_cookie_init(chan);
+
+ list_add_tail(&chan->device_node, &dmac->engine.channels);
+
ret = devm_request_threaded_irq(dmac->dev, rchan->irq,
rcar_dmac_isr_channel,
rcar_dmac_isr_channel_thread, 0,
@@ -1700,15 +1709,6 @@ static int rcar_dmac_chan_probe(struct rcar_dmac *dmac,
return ret;
}
- /*
- * Initialize the DMA engine channel and add it to the DMA engine
- * channels list.
- */
- chan->device = &dmac->engine;
- dma_cookie_init(chan);
-
- list_add_tail(&chan->device_node, &dmac->engine.channels);
-
return 0;
}
@@ -1794,14 +1794,6 @@ static int rcar_dmac_probe(struct platform_device *pdev)
if (!irqname)
return -ENOMEM;
- ret = devm_request_irq(&pdev->dev, irq, rcar_dmac_isr_error, 0,
- irqname, dmac);
- if (ret) {
- dev_err(&pdev->dev, "failed to request IRQ %u (%d)\n",
- irq, ret);
- return ret;
- }
-
/* Enable runtime PM and initialize the device. */
pm_runtime_enable(&pdev->dev);
ret = pm_runtime_get_sync(&pdev->dev);
@@ -1818,8 +1810,32 @@ static int rcar_dmac_probe(struct platform_device *pdev)
goto error;
}
- /* Initialize the channels. */
- INIT_LIST_HEAD(&dmac->engine.channels);
+ /* Initialize engine */
+ engine = &dmac->engine;
+
+ dma_cap_set(DMA_MEMCPY, engine->cap_mask);
+ dma_cap_set(DMA_SLAVE, engine->cap_mask);
+
+ engine->dev = &pdev->dev;
+ engine->copy_align = ilog2(RCAR_DMAC_MEMCPY_XFER_SIZE);
+
+ engine->src_addr_widths = widths;
+ engine->dst_addr_widths = widths;
+ engine->directions = BIT(DMA_MEM_TO_DEV) | BIT(DMA_DEV_TO_MEM);
+ engine->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
+
+ engine->device_alloc_chan_resources = rcar_dmac_alloc_chan_resources;
+ engine->device_free_chan_resources = rcar_dmac_free_chan_resources;
+ engine->device_prep_dma_memcpy = rcar_dmac_prep_dma_memcpy;
+ engine->device_prep_slave_sg = rcar_dmac_prep_slave_sg;
+ engine->device_prep_dma_cyclic = rcar_dmac_prep_dma_cyclic;
+ engine->device_config = rcar_dmac_device_config;
+ engine->device_terminate_all = rcar_dmac_chan_terminate_all;
+ engine->device_tx_status = rcar_dmac_tx_status;
+ engine->device_issue_pending = rcar_dmac_issue_pending;
+ engine->device_synchronize = rcar_dmac_device_synchronize;
+
+ INIT_LIST_HEAD(&engine->channels);
for (i = 0; i < dmac->n_channels; ++i) {
ret = rcar_dmac_chan_probe(dmac, &dmac->channels[i],
@@ -1828,6 +1844,14 @@ static int rcar_dmac_probe(struct platform_device *pdev)
goto error;
}
+ ret = devm_request_irq(&pdev->dev, irq, rcar_dmac_isr_error, 0,
+ irqname, dmac);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request IRQ %u (%d)\n",
+ irq, ret);
+ return ret;
+ }
+
/* Register the DMAC as a DMA provider for DT. */
ret = of_dma_controller_register(pdev->dev.of_node, rcar_dmac_of_xlate,
NULL);
@@ -1839,29 +1863,6 @@ static int rcar_dmac_probe(struct platform_device *pdev)
*
* Default transfer size of 32 bytes requires 32-byte alignment.
*/
- engine = &dmac->engine;
- dma_cap_set(DMA_MEMCPY, engine->cap_mask);
- dma_cap_set(DMA_SLAVE, engine->cap_mask);
-
- engine->dev = &pdev->dev;
- engine->copy_align = ilog2(RCAR_DMAC_MEMCPY_XFER_SIZE);
-
- engine->src_addr_widths = widths;
- engine->dst_addr_widths = widths;
- engine->directions = BIT(DMA_MEM_TO_DEV) | BIT(DMA_DEV_TO_MEM);
- engine->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
-
- engine->device_alloc_chan_resources = rcar_dmac_alloc_chan_resources;
- engine->device_free_chan_resources = rcar_dmac_free_chan_resources;
- engine->device_prep_dma_memcpy = rcar_dmac_prep_dma_memcpy;
- engine->device_prep_slave_sg = rcar_dmac_prep_slave_sg;
- engine->device_prep_dma_cyclic = rcar_dmac_prep_dma_cyclic;
- engine->device_config = rcar_dmac_device_config;
- engine->device_terminate_all = rcar_dmac_chan_terminate_all;
- engine->device_tx_status = rcar_dmac_tx_status;
- engine->device_issue_pending = rcar_dmac_issue_pending;
- engine->device_synchronize = rcar_dmac_device_synchronize;
-
ret = dma_async_device_register(engine);
if (ret < 0)
goto error;
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index c3052fbfd092..f4fab4138c0b 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -79,7 +79,7 @@ static int dma40_memcpy_channels[] = {
};
/* Default configuration for physcial memcpy */
-static struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
+static const struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
.mode = STEDMA40_MODE_PHYSICAL,
.dir = DMA_MEM_TO_MEM,
@@ -93,7 +93,7 @@ static struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
};
/* Default configuration for logical memcpy */
-static struct stedma40_chan_cfg dma40_memcpy_conf_log = {
+static const struct stedma40_chan_cfg dma40_memcpy_conf_log = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = DMA_MEM_TO_MEM,
diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
index a2358780ab2c..bcd496edc70f 100644
--- a/drivers/dma/sun6i-dma.c
+++ b/drivers/dma/sun6i-dma.c
@@ -101,6 +101,17 @@ struct sun6i_dma_config {
u32 nr_max_channels;
u32 nr_max_requests;
u32 nr_max_vchans;
+ /*
+ * In the datasheets/user manuals of newer Allwinner SoCs, a special
+ * bit (bit 2 at register 0x20) is present.
+ * It's named "DMA MCLK interface circuit auto gating bit" in the
+ * documents, and the footnote of this register says that this bit
+ * should be set up when initializing the DMA controller.
+ * Allwinner A23/A33 user manuals do not have this bit documented,
+ * however these SoCs really have and need this bit, as seen in the
+ * BSP kernel source code.
+ */
+ bool gate_needed;
};
/*
@@ -1009,6 +1020,7 @@ static struct sun6i_dma_config sun8i_a23_dma_cfg = {
.nr_max_channels = 8,
.nr_max_requests = 24,
.nr_max_vchans = 37,
+ .gate_needed = true,
};
static struct sun6i_dma_config sun8i_a83t_dma_cfg = {
@@ -1028,11 +1040,24 @@ static struct sun6i_dma_config sun8i_h3_dma_cfg = {
.nr_max_vchans = 34,
};
+/*
+ * The V3s have only 8 physical channels, a maximum DRQ port id of 23,
+ * and a total of 24 usable source and destination endpoints.
+ */
+
+static struct sun6i_dma_config sun8i_v3s_dma_cfg = {
+ .nr_max_channels = 8,
+ .nr_max_requests = 23,
+ .nr_max_vchans = 24,
+ .gate_needed = true,
+};
+
static const struct of_device_id sun6i_dma_match[] = {
{ .compatible = "allwinner,sun6i-a31-dma", .data = &sun6i_a31_dma_cfg },
{ .compatible = "allwinner,sun8i-a23-dma", .data = &sun8i_a23_dma_cfg },
{ .compatible = "allwinner,sun8i-a83t-dma", .data = &sun8i_a83t_dma_cfg },
{ .compatible = "allwinner,sun8i-h3-dma", .data = &sun8i_h3_dma_cfg },
+ { .compatible = "allwinner,sun8i-v3s-dma", .data = &sun8i_v3s_dma_cfg },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sun6i_dma_match);
@@ -1174,13 +1199,7 @@ static int sun6i_dma_probe(struct platform_device *pdev)
goto err_dma_unregister;
}
- /*
- * sun8i variant requires us to toggle a dma gating register,
- * as seen in Allwinner's SDK. This register is not documented
- * in the A23 user manual.
- */
- if (of_device_is_compatible(pdev->dev.of_node,
- "allwinner,sun8i-a23-dma"))
+ if (sdc->cfg->gate_needed)
writel(SUN8I_DMA_GATE_ENABLE, sdc->base + SUN8I_DMA_GATE);
return 0;
diff --git a/drivers/dma/ti-dma-crossbar.c b/drivers/dma/ti-dma-crossbar.c
index 2403475a37cf..2f65a8fde21d 100644
--- a/drivers/dma/ti-dma-crossbar.c
+++ b/drivers/dma/ti-dma-crossbar.c
@@ -308,7 +308,7 @@ static const struct of_device_id ti_dra7_master_match[] = {
static inline void ti_dra7_xbar_reserve(int offset, int len, unsigned long *p)
{
for (; len > 0; len--)
- clear_bit(offset + (len - 1), p);
+ set_bit(offset + (len - 1), p);
}
static int ti_dra7_xbar_probe(struct platform_device *pdev)
diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index 8cf87b1a284b..8722bcba489d 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -2124,7 +2124,7 @@ static int axidma_clk_init(struct platform_device *pdev, struct clk **axi_clk,
*axi_clk = devm_clk_get(&pdev->dev, "s_axi_lite_aclk");
if (IS_ERR(*axi_clk)) {
err = PTR_ERR(*axi_clk);
- dev_err(&pdev->dev, "failed to get axi_aclk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to get axi_aclk (%d)\n", err);
return err;
}
@@ -2142,25 +2142,25 @@ static int axidma_clk_init(struct platform_device *pdev, struct clk **axi_clk,
err = clk_prepare_enable(*axi_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable axi_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable axi_clk (%d)\n", err);
return err;
}
err = clk_prepare_enable(*tx_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable tx_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable tx_clk (%d)\n", err);
goto err_disable_axiclk;
}
err = clk_prepare_enable(*rx_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable rx_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable rx_clk (%d)\n", err);
goto err_disable_txclk;
}
err = clk_prepare_enable(*sg_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable sg_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable sg_clk (%d)\n", err);
goto err_disable_rxclk;
}
@@ -2189,26 +2189,26 @@ static int axicdma_clk_init(struct platform_device *pdev, struct clk **axi_clk,
*axi_clk = devm_clk_get(&pdev->dev, "s_axi_lite_aclk");
if (IS_ERR(*axi_clk)) {
err = PTR_ERR(*axi_clk);
- dev_err(&pdev->dev, "failed to get axi_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to get axi_clk (%d)\n", err);
return err;
}
*dev_clk = devm_clk_get(&pdev->dev, "m_axi_aclk");
if (IS_ERR(*dev_clk)) {
err = PTR_ERR(*dev_clk);
- dev_err(&pdev->dev, "failed to get dev_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to get dev_clk (%d)\n", err);
return err;
}
err = clk_prepare_enable(*axi_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable axi_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable axi_clk (%d)\n", err);
return err;
}
err = clk_prepare_enable(*dev_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable dev_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable dev_clk (%d)\n", err);
goto err_disable_axiclk;
}
@@ -2229,7 +2229,7 @@ static int axivdma_clk_init(struct platform_device *pdev, struct clk **axi_clk,
*axi_clk = devm_clk_get(&pdev->dev, "s_axi_lite_aclk");
if (IS_ERR(*axi_clk)) {
err = PTR_ERR(*axi_clk);
- dev_err(&pdev->dev, "failed to get axi_aclk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to get axi_aclk (%d)\n", err);
return err;
}
@@ -2251,31 +2251,31 @@ static int axivdma_clk_init(struct platform_device *pdev, struct clk **axi_clk,
err = clk_prepare_enable(*axi_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable axi_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable axi_clk (%d)\n", err);
return err;
}
err = clk_prepare_enable(*tx_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable tx_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable tx_clk (%d)\n", err);
goto err_disable_axiclk;
}
err = clk_prepare_enable(*txs_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable txs_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable txs_clk (%d)\n", err);
goto err_disable_txclk;
}
err = clk_prepare_enable(*rx_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable rx_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable rx_clk (%d)\n", err);
goto err_disable_txsclk;
}
err = clk_prepare_enable(*rxs_clk);
if (err) {
- dev_err(&pdev->dev, "failed to enable rxs_clk (%u)\n", err);
+ dev_err(&pdev->dev, "failed to enable rxs_clk (%d)\n", err);
goto err_disable_rxclk;
}
Powered by cgit, Gruvboxed by Blaster4385.