[PATCH v4 01/10] dma-engine: sun4i: Add a quirk to support different chips

[PATCH v4 01/10] dma-engine: sun4i: Add a quirk to support different chips

[Csókás, Bence]

From: Mesih Kilinc <mesihkilinc@gmail.com>

Allwinner suniv F1C100s has similar DMA engine to sun4i. Several
registers has different addresses. Total dma channels, endpoint counts
and max burst counts are also different.

In order to support F1C100s add a quirk structure to hold IC specific
data.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
[ csokas.bence: Resolve conflict in `sun4i_dma_prep_dma_cyclic()`, fix whitespace ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---

Notes:
    Changes in v2:
    * Whitespace

 drivers/dma/sun4i-dma.c | 138 ++++++++++++++++++++++++++++++----------
 1 file changed, 106 insertions(+), 32 deletions(-)

diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c
index 2e7f9b07fdd2..d472f57a39ea 100644
--- a/drivers/dma/sun4i-dma.c
+++ b/drivers/dma/sun4i-dma.c
@@ -13,6 +13,7 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/of_dma.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
@@ -31,6 +32,8 @@
 #define SUN4I_DMA_CFG_SRC_ADDR_MODE(mode)	((mode) << 5)
 #define SUN4I_DMA_CFG_SRC_DRQ_TYPE(type)	(type)
 
+#define SUN4I_MAX_BURST	8
+
 /** Normal DMA register values **/
 
 /* Normal DMA source/destination data request type values */
@@ -132,6 +135,32 @@
 #define SUN4I_DDMA_MAX_SEG_SIZE		SZ_16M
 #define SUN4I_DMA_MAX_SEG_SIZE		SUN4I_NDMA_MAX_SEG_SIZE
 
+/*
+ * Hardware channels / ports representation
+ *
+ * The hardware is used in several SoCs, with differing numbers
+ * of channels and endpoints. This structure ties those numbers
+ * to a certain compatible string.
+ */
+struct sun4i_dma_config {
+	u32 ndma_nr_max_channels;
+	u32 ndma_nr_max_vchans;
+
+	u32 ddma_nr_max_channels;
+	u32 ddma_nr_max_vchans;
+
+	u32 dma_nr_max_channels;
+
+	void (*set_dst_data_width)(u32 *p_cfg, s8 data_width);
+	void (*set_src_data_width)(u32 *p_cfg, s8 data_width);
+	int (*convert_burst)(u32 maxburst);
+
+	u8 ndma_drq_sdram;
+	u8 ddma_drq_sdram;
+
+	u8 max_burst;
+};
+
 struct sun4i_dma_pchan {
 	/* Register base of channel */
 	void __iomem			*base;
@@ -170,7 +199,7 @@ struct sun4i_dma_contract {
 };
 
 struct sun4i_dma_dev {
-	DECLARE_BITMAP(pchans_used, SUN4I_DMA_NR_MAX_CHANNELS);
+	unsigned long *pchans_used;
 	struct dma_device		slave;
 	struct sun4i_dma_pchan		*pchans;
 	struct sun4i_dma_vchan		*vchans;
@@ -178,6 +207,7 @@ struct sun4i_dma_dev {
 	struct clk			*clk;
 	int				irq;
 	spinlock_t			lock;
+	const struct sun4i_dma_config *cfg;
 };
 
 static struct sun4i_dma_dev *to_sun4i_dma_dev(struct dma_device *dev)
@@ -200,7 +230,17 @@ static struct device *chan2dev(struct dma_chan *chan)
 	return &chan->dev->device;
 }
 
-static int convert_burst(u32 maxburst)
+static void set_dst_data_width_a10(u32 *p_cfg, s8 data_width)
+{
+	*p_cfg |= SUN4I_DMA_CFG_DST_DATA_WIDTH(data_width);
+}
+
+static void set_src_data_width_a10(u32 *p_cfg, s8 data_width)
+{
+	*p_cfg |= SUN4I_DMA_CFG_SRC_DATA_WIDTH(data_width);
+}
+
+static int convert_burst_a10(u32 maxburst)
 {
 	if (maxburst > 8)
 		return -EINVAL;
@@ -233,15 +273,15 @@ static struct sun4i_dma_pchan *find_and_use_pchan(struct sun4i_dma_dev *priv,
 	int i, max;
 
 	/*
-	 * pchans 0-SUN4I_NDMA_NR_MAX_CHANNELS are normal, and
-	 * SUN4I_NDMA_NR_MAX_CHANNELS+ are dedicated ones
+	 * pchans 0-priv->cfg->ndma_nr_max_channels are normal, and
+	 * priv->cfg->ndma_nr_max_channels+ are dedicated ones
 	 */
 	if (vchan->is_dedicated) {
-		i = SUN4I_NDMA_NR_MAX_CHANNELS;
-		max = SUN4I_DMA_NR_MAX_CHANNELS;
+		i = priv->cfg->ndma_nr_max_channels;
+		max = priv->cfg->dma_nr_max_channels;
 	} else {
 		i = 0;
-		max = SUN4I_NDMA_NR_MAX_CHANNELS;
+		max = priv->cfg->ndma_nr_max_channels;
 	}
 
 	spin_lock_irqsave(&priv->lock, flags);
@@ -444,6 +484,7 @@ generate_ndma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
 		      size_t len, struct dma_slave_config *sconfig,
 		      enum dma_transfer_direction direction)
 {
+	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
 	struct sun4i_dma_promise *promise;
 	int ret;
 
@@ -467,13 +508,13 @@ generate_ndma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
 		sconfig->src_addr_width, sconfig->dst_addr_width);
 
 	/* Source burst */
-	ret = convert_burst(sconfig->src_maxburst);
+	ret = priv->cfg->convert_burst(sconfig->src_maxburst);
 	if (ret < 0)
 		goto fail;
 	promise->cfg |= SUN4I_DMA_CFG_SRC_BURST_LENGTH(ret);
 
 	/* Destination burst */
-	ret = convert_burst(sconfig->dst_maxburst);
+	ret = priv->cfg->convert_burst(sconfig->dst_maxburst);
 	if (ret < 0)
 		goto fail;
 	promise->cfg |= SUN4I_DMA_CFG_DST_BURST_LENGTH(ret);
@@ -482,13 +523,13 @@ generate_ndma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
 	ret = convert_buswidth(sconfig->src_addr_width);
 	if (ret < 0)
 		goto fail;
-	promise->cfg |= SUN4I_DMA_CFG_SRC_DATA_WIDTH(ret);
+	priv->cfg->set_src_data_width(&promise->cfg, ret);
 
 	/* Destination bus width */
 	ret = convert_buswidth(sconfig->dst_addr_width);
 	if (ret < 0)
 		goto fail;
-	promise->cfg |= SUN4I_DMA_CFG_DST_DATA_WIDTH(ret);
+	priv->cfg->set_dst_data_width(&promise->cfg, ret);
 
 	return promise;
 
@@ -510,6 +551,7 @@ static struct sun4i_dma_promise *
 generate_ddma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
 		      size_t len, struct dma_slave_config *sconfig)
 {
+	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
 	struct sun4i_dma_promise *promise;
 	int ret;
 
@@ -524,13 +566,13 @@ generate_ddma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
 		SUN4I_DDMA_CFG_BYTE_COUNT_MODE_REMAIN;
 
 	/* Source burst */
-	ret = convert_burst(sconfig->src_maxburst);
+	ret = priv->cfg->convert_burst(sconfig->src_maxburst);
 	if (ret < 0)
 		goto fail;
 	promise->cfg |= SUN4I_DMA_CFG_SRC_BURST_LENGTH(ret);
 
 	/* Destination burst */
-	ret = convert_burst(sconfig->dst_maxburst);
+	ret = priv->cfg->convert_burst(sconfig->dst_maxburst);
 	if (ret < 0)
 		goto fail;
 	promise->cfg |= SUN4I_DMA_CFG_DST_BURST_LENGTH(ret);
@@ -539,13 +581,13 @@ generate_ddma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
 	ret = convert_buswidth(sconfig->src_addr_width);
 	if (ret < 0)
 		goto fail;
-	promise->cfg |= SUN4I_DMA_CFG_SRC_DATA_WIDTH(ret);
+	priv->cfg->set_src_data_width(&promise->cfg, ret);
 
 	/* Destination bus width */
 	ret = convert_buswidth(sconfig->dst_addr_width);
 	if (ret < 0)
 		goto fail;
-	promise->cfg |= SUN4I_DMA_CFG_DST_DATA_WIDTH(ret);
+	priv->cfg->set_dst_data_width(&promise->cfg, ret);
 
 	return promise;
 
@@ -622,6 +664,7 @@ static struct dma_async_tx_descriptor *
 sun4i_dma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest,
 			  dma_addr_t src, size_t len, unsigned long flags)
 {
+	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
 	struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
 	struct dma_slave_config *sconfig = &vchan->cfg;
 	struct sun4i_dma_promise *promise;
@@ -638,8 +681,8 @@ sun4i_dma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest,
 	 */
 	sconfig->src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	sconfig->dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-	sconfig->src_maxburst = 8;
-	sconfig->dst_maxburst = 8;
+	sconfig->src_maxburst = priv->cfg->max_burst;
+	sconfig->dst_maxburst = priv->cfg->max_burst;
 
 	if (vchan->is_dedicated)
 		promise = generate_ddma_promise(chan, src, dest, len, sconfig);
@@ -654,11 +697,13 @@ sun4i_dma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest,
 
 	/* Configure memcpy mode */
 	if (vchan->is_dedicated) {
-		promise->cfg |= SUN4I_DMA_CFG_SRC_DRQ_TYPE(SUN4I_DDMA_DRQ_TYPE_SDRAM) |
-				SUN4I_DMA_CFG_DST_DRQ_TYPE(SUN4I_DDMA_DRQ_TYPE_SDRAM);
+		promise->cfg |=
+			SUN4I_DMA_CFG_SRC_DRQ_TYPE(priv->cfg->ddma_drq_sdram) |
+			SUN4I_DMA_CFG_DST_DRQ_TYPE(priv->cfg->ddma_drq_sdram);
 	} else {
-		promise->cfg |= SUN4I_DMA_CFG_SRC_DRQ_TYPE(SUN4I_NDMA_DRQ_TYPE_SDRAM) |
-				SUN4I_DMA_CFG_DST_DRQ_TYPE(SUN4I_NDMA_DRQ_TYPE_SDRAM);
+		promise->cfg |=
+			SUN4I_DMA_CFG_SRC_DRQ_TYPE(priv->cfg->ndma_drq_sdram) |
+			SUN4I_DMA_CFG_DST_DRQ_TYPE(priv->cfg->ndma_drq_sdram);
 	}
 
 	/* Fill the contract with our only promise */
@@ -673,6 +718,7 @@ sun4i_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf, size_t len,
 			  size_t period_len, enum dma_transfer_direction dir,
 			  unsigned long flags)
 {
+	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
 	struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
 	struct dma_slave_config *sconfig = &vchan->cfg;
 	struct sun4i_dma_promise *promise;
@@ -696,11 +742,11 @@ sun4i_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf, size_t len,
 	if (vchan->is_dedicated) {
 		io_mode = SUN4I_DDMA_ADDR_MODE_IO;
 		linear_mode = SUN4I_DDMA_ADDR_MODE_LINEAR;
-		ram_type = SUN4I_DDMA_DRQ_TYPE_SDRAM;
+		ram_type = priv->cfg->ddma_drq_sdram;
 	} else {
 		io_mode = SUN4I_NDMA_ADDR_MODE_IO;
 		linear_mode = SUN4I_NDMA_ADDR_MODE_LINEAR;
-		ram_type = SUN4I_NDMA_DRQ_TYPE_SDRAM;
+		ram_type = priv->cfg->ndma_drq_sdram;
 	}
 
 	if (dir == DMA_MEM_TO_DEV) {
@@ -793,6 +839,7 @@ sun4i_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 			unsigned int sg_len, enum dma_transfer_direction dir,
 			unsigned long flags, void *context)
 {
+	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
 	struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
 	struct dma_slave_config *sconfig = &vchan->cfg;
 	struct sun4i_dma_promise *promise;
@@ -818,11 +865,11 @@ sun4i_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 	if (vchan->is_dedicated) {
 		io_mode = SUN4I_DDMA_ADDR_MODE_IO;
 		linear_mode = SUN4I_DDMA_ADDR_MODE_LINEAR;
-		ram_type = SUN4I_DDMA_DRQ_TYPE_SDRAM;
+		ram_type = priv->cfg->ddma_drq_sdram;
 	} else {
 		io_mode = SUN4I_NDMA_ADDR_MODE_IO;
 		linear_mode = SUN4I_NDMA_ADDR_MODE_LINEAR;
-		ram_type = SUN4I_NDMA_DRQ_TYPE_SDRAM;
+		ram_type = priv->cfg->ndma_drq_sdram;
 	}
 
 	if (dir == DMA_MEM_TO_DEV)
@@ -1150,6 +1197,10 @@ static int sun4i_dma_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
+	priv->cfg = of_device_get_match_data(&pdev->dev);
+	if (!priv->cfg)
+		return -ENODEV;
+
 	priv->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
@@ -1197,23 +1248,26 @@ static int sun4i_dma_probe(struct platform_device *pdev)
 
 	priv->slave.dev = &pdev->dev;
 
-	priv->pchans = devm_kcalloc(&pdev->dev, SUN4I_DMA_NR_MAX_CHANNELS,
+	priv->pchans = devm_kcalloc(&pdev->dev, priv->cfg->dma_nr_max_channels,
 				    sizeof(struct sun4i_dma_pchan), GFP_KERNEL);
 	priv->vchans = devm_kcalloc(&pdev->dev, SUN4I_DMA_NR_MAX_VCHANS,
 				    sizeof(struct sun4i_dma_vchan), GFP_KERNEL);
-	if (!priv->vchans || !priv->pchans)
+	priv->pchans_used = devm_kcalloc(&pdev->dev,
+					 BITS_TO_LONGS(priv->cfg->dma_nr_max_channels),
+					 sizeof(unsigned long), GFP_KERNEL);
+	if (!priv->vchans || !priv->pchans || !priv->pchans_used)
 		return -ENOMEM;
 
 	/*
-	 * [0..SUN4I_NDMA_NR_MAX_CHANNELS) are normal pchans, and
-	 * [SUN4I_NDMA_NR_MAX_CHANNELS..SUN4I_DMA_NR_MAX_CHANNELS) are
+	 * [0..priv->cfg->ndma_nr_max_channels) are normal pchans, and
+	 * [priv->cfg->ndma_nr_max_channels..priv->cfg->dma_nr_max_channels) are
 	 * dedicated ones
 	 */
-	for (i = 0; i < SUN4I_NDMA_NR_MAX_CHANNELS; i++)
+	for (i = 0; i < priv->cfg->ndma_nr_max_channels; i++)
 		priv->pchans[i].base = priv->base +
 			SUN4I_NDMA_CHANNEL_REG_BASE(i);
 
-	for (j = 0; i < SUN4I_DMA_NR_MAX_CHANNELS; i++, j++) {
+	for (j = 0; i < priv->cfg->dma_nr_max_channels; i++, j++) {
 		priv->pchans[i].base = priv->base +
 			SUN4I_DDMA_CHANNEL_REG_BASE(j);
 		priv->pchans[i].is_dedicated = 1;
@@ -1284,8 +1338,28 @@ static void sun4i_dma_remove(struct platform_device *pdev)
 	clk_disable_unprepare(priv->clk);
 }
 
+static struct sun4i_dma_config sun4i_a10_dma_cfg = {
+	.ndma_nr_max_channels	= SUN4I_NDMA_NR_MAX_CHANNELS,
+	.ndma_nr_max_vchans	= SUN4I_NDMA_NR_MAX_VCHANS,
+
+	.ddma_nr_max_channels	= SUN4I_DDMA_NR_MAX_CHANNELS,
+	.ddma_nr_max_vchans	= SUN4I_DDMA_NR_MAX_VCHANS,
+
+	.dma_nr_max_channels	= SUN4I_NDMA_NR_MAX_CHANNELS +
+		SUN4I_DDMA_NR_MAX_CHANNELS,
+
+	.set_dst_data_width	= set_dst_data_width_a10,
+	.set_src_data_width	= set_src_data_width_a10,
+	.convert_burst		= convert_burst_a10,
+
+	.ndma_drq_sdram		= SUN4I_NDMA_DRQ_TYPE_SDRAM,
+	.ddma_drq_sdram		= SUN4I_DDMA_DRQ_TYPE_SDRAM,
+
+	.max_burst		= SUN4I_MAX_BURST,
+};
+
 static const struct of_device_id sun4i_dma_match[] = {
-	{ .compatible = "allwinner,sun4i-a10-dma" },
+	{ .compatible = "allwinner,sun4i-a10-dma", .data = &sun4i_a10_dma_cfg },
 	{ /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, sun4i_dma_match);
-- 
2.34.1

[PATCH v4 02/10] dma-engine: sun4i: Add has_reset option to quirk

[Csókás, Bence]

From: Mesih Kilinc <mesihkilinc@gmail.com>

Allwinner suniv F1C100s has a reset bit for DMA in CCU. Sun4i do not
has this bit but in order to support suniv we need to add it. So add
support for reset bit.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
[ csokas.bence: Rebased and addressed comments ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---

Notes:
    Changes in v2:
    * Call reset_control_deassert() unconditionally, as it supports optional resets
    * Use dev_err_probe()
    * Whitespace
    Changes in v3:
    * More dev_err_probe() fixes
    Changes in v3:
    * Use return value of dev_err_probe()

 drivers/dma/sun4i-dma.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c
index d472f57a39ea..4626cc8ad114 100644
--- a/drivers/dma/sun4i-dma.c
+++ b/drivers/dma/sun4i-dma.c
@@ -15,6 +15,7 @@
 #include <linux/of_dma.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
+#include <linux/reset.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 
@@ -159,6 +160,7 @@ struct sun4i_dma_config {
 	u8 ddma_drq_sdram;
 
 	u8 max_burst;
+	bool has_reset;
 };
 
 struct sun4i_dma_pchan {
@@ -208,6 +210,7 @@ struct sun4i_dma_dev {
 	int				irq;
 	spinlock_t			lock;
 	const struct sun4i_dma_config *cfg;
+	struct reset_control *rst;
 };
 
 static struct sun4i_dma_dev *to_sun4i_dma_dev(struct dma_device *dev)
@@ -1215,6 +1218,15 @@ static int sun4i_dma_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->clk);
 	}
 
+	if (priv->cfg->has_reset) {
+		priv->rst = devm_reset_control_get_exclusive(&pdev->dev,
+							     NULL);
+		if (IS_ERR(priv->rst)) {
+			return dev_err_probe(&pdev->dev, PTR_ERR(priv->rst),
+						  "Failed to get reset control\n");
+		}
+	}
+
 	platform_set_drvdata(pdev, priv);
 	spin_lock_init(&priv->lock);
 
@@ -1287,6 +1299,14 @@ static int sun4i_dma_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	/* Deassert the reset control */
+	ret = reset_control_deassert(priv->rst);
+	if (ret) {
+		dev_err_probe(&pdev->dev, ret,
+			"Failed to deassert the reset control\n");
+		goto err_clk_disable;
+	}
+
 	/*
 	 * Make sure the IRQs are all disabled and accounted for. The bootloader
 	 * likes to leave these dirty
@@ -1356,6 +1376,7 @@ static struct sun4i_dma_config sun4i_a10_dma_cfg = {
 	.ddma_drq_sdram		= SUN4I_DDMA_DRQ_TYPE_SDRAM,
 
 	.max_burst		= SUN4I_MAX_BURST,
+	.has_reset		= false,
 };
 
 static const struct of_device_id sun4i_dma_match[] = {
-- 
2.34.1

[PATCH v4 03/10] dt-bindings: dmaengine: Add Allwinner suniv F1C100s DMA

[Csókás, Bence]

Add compatible string for Allwinner suniv F1C100s DMA.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/linux-kernel/20241024-recycler-borrowing-5d4296fd4a56@spud/
[ csokas.bence: Reimplemented Mesih Kilinc's binding in YAML ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---
 .../devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml      | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml b/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml
index 02d5bd035409..9b5180c0a7c4 100644
--- a/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml
+++ b/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml
@@ -22,7 +22,9 @@ properties:
       number.
 
   compatible:
-    const: allwinner,sun4i-a10-dma
+    enum:
+      - allwinner,sun4i-a10-dma
+      - allwinner,suniv-f1c100s-dma
 
   reg:
     maxItems: 1
-- 
2.34.1

[PATCH v4 04/10] dma-engine: sun4i: Add support for Allwinner suniv F1C100s

[Csókás, Bence]

From: Mesih Kilinc <mesihkilinc@gmail.com>

DMA of Allwinner suniv F1C100s is similar to sun4i. It has 4 NDMA, 4
DDMA channels and endpoints are different. Also F1C100s has reset bit
for DMA in CCU. Add support for it.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
[ csokas.bence: Rebased on current master ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---
 drivers/dma/Kconfig     |  4 +--
 drivers/dma/sun4i-dma.c | 60 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index d9ec1e69e428..fc25bfc356f3 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -162,8 +162,8 @@ config DMA_SA11X0
 
 config DMA_SUN4I
 	tristate "Allwinner A10 DMA SoCs support"
-	depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I
-	default (MACH_SUN4I || MACH_SUN5I || MACH_SUN7I)
+	depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || MACH_SUNIV
+	default (MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || MACH_SUNIV)
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS
 	help
diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c
index 4626cc8ad114..c0a4e40134dc 100644
--- a/drivers/dma/sun4i-dma.c
+++ b/drivers/dma/sun4i-dma.c
@@ -33,7 +33,11 @@
 #define SUN4I_DMA_CFG_SRC_ADDR_MODE(mode)	((mode) << 5)
 #define SUN4I_DMA_CFG_SRC_DRQ_TYPE(type)	(type)
 
+#define SUNIV_DMA_CFG_DST_DATA_WIDTH(width)	((width) << 24)
+#define SUNIV_DMA_CFG_SRC_DATA_WIDTH(width)	((width) << 8)
+
 #define SUN4I_MAX_BURST	8
+#define SUNIV_MAX_BURST	4
 
 /** Normal DMA register values **/
 
@@ -41,6 +45,9 @@
 #define SUN4I_NDMA_DRQ_TYPE_SDRAM		0x16
 #define SUN4I_NDMA_DRQ_TYPE_LIMIT		(0x1F + 1)
 
+#define SUNIV_NDMA_DRQ_TYPE_SDRAM		0x11
+#define SUNIV_NDMA_DRQ_TYPE_LIMIT		(0x17 + 1)
+
 /** Normal DMA register layout **/
 
 /* Dedicated DMA source/destination address mode values */
@@ -54,6 +61,9 @@
 #define SUN4I_NDMA_CFG_BYTE_COUNT_MODE_REMAIN	BIT(15)
 #define SUN4I_NDMA_CFG_SRC_NON_SECURE		BIT(6)
 
+#define SUNIV_NDMA_CFG_CONT_MODE		BIT(29)
+#define SUNIV_NDMA_CFG_WAIT_STATE(n)		((n) << 26)
+
 /** Dedicated DMA register values **/
 
 /* Dedicated DMA source/destination address mode values */
@@ -66,6 +76,9 @@
 #define SUN4I_DDMA_DRQ_TYPE_SDRAM		0x1
 #define SUN4I_DDMA_DRQ_TYPE_LIMIT		(0x1F + 1)
 
+#define SUNIV_DDMA_DRQ_TYPE_SDRAM		0x1
+#define SUNIV_DDMA_DRQ_TYPE_LIMIT		(0x9 + 1)
+
 /** Dedicated DMA register layout **/
 
 /* Dedicated DMA configuration register layout */
@@ -119,6 +132,11 @@
 #define SUN4I_DMA_NR_MAX_VCHANS						\
 	(SUN4I_NDMA_NR_MAX_VCHANS + SUN4I_DDMA_NR_MAX_VCHANS)
 
+#define SUNIV_NDMA_NR_MAX_CHANNELS	4
+#define SUNIV_DDMA_NR_MAX_CHANNELS	4
+#define SUNIV_NDMA_NR_MAX_VCHANS	(24 * 2 - 1)
+#define SUNIV_DDMA_NR_MAX_VCHANS	10
+
 /* This set of SUN4I_DDMA timing parameters were found experimentally while
  * working with the SPI driver and seem to make it behave correctly */
 #define SUN4I_DDMA_MAGIC_SPI_PARAMETERS \
@@ -243,6 +261,16 @@ static void set_src_data_width_a10(u32 *p_cfg, s8 data_width)
 	*p_cfg |= SUN4I_DMA_CFG_SRC_DATA_WIDTH(data_width);
 }
 
+static void set_dst_data_width_f1c100s(u32 *p_cfg, s8 data_width)
+{
+	*p_cfg |= SUNIV_DMA_CFG_DST_DATA_WIDTH(data_width);
+}
+
+static void set_src_data_width_f1c100s(u32 *p_cfg, s8 data_width)
+{
+	*p_cfg |= SUNIV_DMA_CFG_SRC_DATA_WIDTH(data_width);
+}
+
 static int convert_burst_a10(u32 maxburst)
 {
 	if (maxburst > 8)
@@ -252,6 +280,15 @@ static int convert_burst_a10(u32 maxburst)
 	return (maxburst >> 2);
 }
 
+static int convert_burst_f1c100s(u32 maxburst)
+{
+	if (maxburst > 4)
+		return -EINVAL;
+
+	/* 1 -> 0, 4 -> 1 */
+	return (maxburst >> 2);
+}
+
 static int convert_buswidth(enum dma_slave_buswidth addr_width)
 {
 	if (addr_width > DMA_SLAVE_BUSWIDTH_4_BYTES)
@@ -1379,8 +1416,31 @@ static struct sun4i_dma_config sun4i_a10_dma_cfg = {
 	.has_reset		= false,
 };
 
+static struct sun4i_dma_config suniv_f1c100s_dma_cfg = {
+	.ndma_nr_max_channels	= SUNIV_NDMA_NR_MAX_CHANNELS,
+	.ndma_nr_max_vchans	= SUNIV_NDMA_NR_MAX_VCHANS,
+
+	.ddma_nr_max_channels	= SUNIV_DDMA_NR_MAX_CHANNELS,
+	.ddma_nr_max_vchans	= SUNIV_DDMA_NR_MAX_VCHANS,
+
+	.dma_nr_max_channels	= SUNIV_NDMA_NR_MAX_CHANNELS +
+		SUNIV_DDMA_NR_MAX_CHANNELS,
+
+	.set_dst_data_width	= set_dst_data_width_f1c100s,
+	.set_src_data_width	= set_src_data_width_f1c100s,
+	.convert_burst		= convert_burst_f1c100s,
+
+	.ndma_drq_sdram		= SUNIV_NDMA_DRQ_TYPE_SDRAM,
+	.ddma_drq_sdram		= SUNIV_DDMA_DRQ_TYPE_SDRAM,
+
+	.max_burst		= SUNIV_MAX_BURST,
+	.has_reset		= true,
+};
+
 static const struct of_device_id sun4i_dma_match[] = {
 	{ .compatible = "allwinner,sun4i-a10-dma", .data = &sun4i_a10_dma_cfg },
+	{ .compatible = "allwinner,suniv-f1c100s-dma",
+		.data = &suniv_f1c100s_dma_cfg },
 	{ /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, sun4i_dma_match);
-- 
2.34.1

[PATCH v4 05/10] ARM: dts: suniv: f1c100s: Add support for DMA

[Csókás, Bence]

From: Mesih Kilinc <mesihkilinc@gmail.com>

Allwinner suniv F1C100s now has DMA support. Enable it under device
tree.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
[ csokas.bence: Rebased on current master ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---
 arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi b/arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi
index 3c61d59ab5f8..290efe026ceb 100644
--- a/arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi
+++ b/arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi
@@ -6,6 +6,7 @@
 
 #include <dt-bindings/clock/suniv-ccu-f1c100s.h>
 #include <dt-bindings/reset/suniv-ccu-f1c100s.h>
+#include <dt-bindings/dma/sun4i-a10.h>
 
 / {
 	#address-cells = <1>;
@@ -159,6 +160,15 @@ usbphy: phy@1c13400 {
 			status = "disabled";
 		};
 
+		dma: dma-controller@1c02000 {
+			compatible = "allwinner,suniv-f1c100s-dma";
+			reg = <0x01c02000 0x1000>;
+			interrupts = <18>;
+			clocks = <&ccu CLK_BUS_DMA>;
+			resets = <&ccu RST_BUS_DMA>;
+			#dma-cells = <2>;
+		};
+
 		ccu: clock@1c20000 {
 			compatible = "allwinner,suniv-f1c100s-ccu";
 			reg = <0x01c20000 0x400>;
-- 
2.34.1

[PATCH v4 06/10] ASoC: sun4i-codec: Add DMA Max Burst field

[Csókás, Bence]

From: Mesih Kilinc <mesihkilinc@gmail.com>

Allwinner suniv F1C100s has similar DMA engine to sun4i but it has
smaller max burst size compared to sun4i. Add a quirk field to
differantitate between them.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
[ csokas.bence: Rebased on current master ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---
 sound/soc/sunxi/sun4i-codec.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
index 330bc0c09f56..4953b5013c58 100644
--- a/sound/soc/sunxi/sun4i-codec.c
+++ b/sound/soc/sunxi/sun4i-codec.c
@@ -228,6 +228,8 @@
 
 /* TODO H3 DAP (Digital Audio Processing) bits */
 
+#define SUN4I_DMA_MAX_BURST			(8)
+
 struct sun4i_codec {
 	struct device	*dev;
 	struct regmap	*regmap;
@@ -1568,6 +1570,7 @@ struct sun4i_codec_quirks {
 	unsigned int reg_dac_txdata;	/* TX FIFO offset for DMA config */
 	unsigned int reg_adc_rxdata;	/* RX FIFO offset for DMA config */
 	bool has_reset;
+	u32 dma_max_burst;
 };
 
 static const struct sun4i_codec_quirks sun4i_codec_quirks = {
@@ -1577,6 +1580,7 @@ static const struct sun4i_codec_quirks sun4i_codec_quirks = {
 	.reg_adc_fifoc	= REG_FIELD(SUN4I_CODEC_ADC_FIFOC, 0, 31),
 	.reg_dac_txdata	= SUN4I_CODEC_DAC_TXDATA,
 	.reg_adc_rxdata	= SUN4I_CODEC_ADC_RXDATA,
+	.dma_max_burst	= SUN4I_DMA_MAX_BURST,
 };
 
 static const struct sun4i_codec_quirks sun6i_a31_codec_quirks = {
@@ -1587,6 +1591,7 @@ static const struct sun4i_codec_quirks sun6i_a31_codec_quirks = {
 	.reg_dac_txdata	= SUN4I_CODEC_DAC_TXDATA,
 	.reg_adc_rxdata	= SUN6I_CODEC_ADC_RXDATA,
 	.has_reset	= true,
+	.dma_max_burst	= SUN4I_DMA_MAX_BURST,
 };
 
 static const struct sun4i_codec_quirks sun7i_codec_quirks = {
@@ -1596,6 +1601,7 @@ static const struct sun4i_codec_quirks sun7i_codec_quirks = {
 	.reg_adc_fifoc	= REG_FIELD(SUN4I_CODEC_ADC_FIFOC, 0, 31),
 	.reg_dac_txdata	= SUN4I_CODEC_DAC_TXDATA,
 	.reg_adc_rxdata	= SUN4I_CODEC_ADC_RXDATA,
+	.dma_max_burst	= SUN4I_DMA_MAX_BURST,
 };
 
 static const struct sun4i_codec_quirks sun8i_a23_codec_quirks = {
@@ -1606,6 +1612,7 @@ static const struct sun4i_codec_quirks sun8i_a23_codec_quirks = {
 	.reg_dac_txdata	= SUN4I_CODEC_DAC_TXDATA,
 	.reg_adc_rxdata	= SUN6I_CODEC_ADC_RXDATA,
 	.has_reset	= true,
+	.dma_max_burst	= SUN4I_DMA_MAX_BURST,
 };
 
 static const struct sun4i_codec_quirks sun8i_h3_codec_quirks = {
@@ -1621,6 +1628,7 @@ static const struct sun4i_codec_quirks sun8i_h3_codec_quirks = {
 	.reg_dac_txdata	= SUN8I_H3_CODEC_DAC_TXDATA,
 	.reg_adc_rxdata	= SUN6I_CODEC_ADC_RXDATA,
 	.has_reset	= true,
+	.dma_max_burst	= SUN4I_DMA_MAX_BURST,
 };
 
 static const struct sun4i_codec_quirks sun8i_v3s_codec_quirks = {
@@ -1635,6 +1643,7 @@ static const struct sun4i_codec_quirks sun8i_v3s_codec_quirks = {
 	.reg_dac_txdata	= SUN8I_H3_CODEC_DAC_TXDATA,
 	.reg_adc_rxdata	= SUN6I_CODEC_ADC_RXDATA,
 	.has_reset	= true,
+	.dma_max_burst	= SUN4I_DMA_MAX_BURST,
 };
 
 static const struct of_device_id sun4i_codec_of_match[] = {
@@ -1757,12 +1766,12 @@ static int sun4i_codec_probe(struct platform_device *pdev)
 
 	/* DMA configuration for TX FIFO */
 	scodec->playback_dma_data.addr = res->start + quirks->reg_dac_txdata;
-	scodec->playback_dma_data.maxburst = 8;
+	scodec->playback_dma_data.maxburst = quirks->dma_max_burst;
 	scodec->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
 
 	/* DMA configuration for RX FIFO */
 	scodec->capture_dma_data.addr = res->start + quirks->reg_adc_rxdata;
-	scodec->capture_dma_data.maxburst = 8;
+	scodec->capture_dma_data.maxburst = quirks->dma_max_burst;
 	scodec->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
 
 	ret = devm_snd_soc_register_component(&pdev->dev, quirks->codec,
-- 
2.34.1

[PATCH v4 07/10] dt-bindings: sound: Add Allwinner suniv F1C100s Audio Codec

[Csókás, Bence]

Add compatible string for Allwinner suniv F1C100s audio codec.

[ csokas.bence: Reimplement Mesih Kilinc's binding in YAML ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---
 .../sound/allwinner,sun4i-a10-codec.yaml      | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-codec.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-codec.yaml
index 78273647f766..16f4f7a40d9d 100644
--- a/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-codec.yaml
+++ b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-codec.yaml
@@ -22,6 +22,7 @@ properties:
       - allwinner,sun8i-a23-codec
       - allwinner,sun8i-h3-codec
       - allwinner,sun8i-v3s-codec
+      - allwinner,suniv-f1c100s-codec
 
   reg:
     maxItems: 1
@@ -70,6 +71,7 @@ properties:
         - MIC1
         - MIC2
         - MIC3
+        - MIC
 
         # Microphone Biases from the SoC
         - HBIAS
@@ -80,6 +82,8 @@ properties:
         - Headset Mic
         - Line In
         - Line Out
+        - Right FM In
+        - Left FM In
         - Mic
         - Speaker
 
@@ -229,6 +233,33 @@ allOf:
               - Mic
               - Speaker
 
+  - if:
+      properties:
+        compatible:
+          enum:
+            - allwinner,suniv-f1c100s-codec
+
+    then:
+      properties:
+        allwinner,audio-routing:
+          items:
+            enum:
+              - HP
+              - HPCOM
+              - LINEIN
+              - LINEOUT
+              - MIC
+              - HBIAS
+              - MBIAS
+              - Headphone
+              - Headset Mic
+              - Line In
+              - Line Out
+              - Right FM In
+              - Left FM In
+              - Mic
+              - Speaker
+
 unevaluatedProperties: false
 
 examples:
-- 
2.34.1

[PATCH v4 08/10] ASoC: sun4i-codec: Add support for Allwinner suniv F1C100s

[Csókás, Bence]

From: Mesih Kilinc <mesihkilinc@gmail.com>

Allwinner suniv F1C100s has similar but primitive audio codec
comparared to sun4i. Add support for it.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
[ csokas.bence: Remove `non_legacy_dai_naming` ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---

Notes:
    Changes in v2:
    * Whitespace

 sound/soc/sunxi/sun4i-codec.c | 352 ++++++++++++++++++++++++++++++++++
 1 file changed, 352 insertions(+)

diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
index 4953b5013c58..e253fb8a4226 100644
--- a/sound/soc/sunxi/sun4i-codec.c
+++ b/sound/soc/sunxi/sun4i-codec.c
@@ -5,6 +5,7 @@
  * Copyright 2015 Maxime Ripard <maxime.ripard@free-electrons.com>
  * Copyright 2015 Adam Sampson <ats@offog.org>
  * Copyright 2016 Chen-Yu Tsai <wens@csie.org>
+ * Copyright 2018 Mesih Kilinc <mesihkilinc@gmail.com>
  *
  * Based on the Allwinner SDK driver, released under the GPL.
  */
@@ -230,6 +231,62 @@
 
 #define SUN4I_DMA_MAX_BURST			(8)
 
+/* suniv specific registers */
+
+#define SUNIV_DMA_MAX_BURST			(4)
+
+/* Codec DAC digital controls and FIFO registers */
+#define SUNIV_CODEC_ADC_FIFOC			(0x10)
+#define SUNIV_CODEC_ADC_FIFOC_EN_AD		(28)
+#define SUNIV_CODEC_ADC_FIFOS			(0x14)
+#define SUNIV_CODEC_ADC_RXDATA			(0x18)
+
+/* Output mixer and gain controls */
+#define SUNIV_CODEC_OM_DACA_CTRL			(0x20)
+#define SUNIV_CODEC_OM_DACA_CTRL_DACAREN		(31)
+#define SUNIV_CODEC_OM_DACA_CTRL_DACALEN		(30)
+#define SUNIV_CODEC_OM_DACA_CTRL_RMIXEN			(29)
+#define SUNIV_CODEC_OM_DACA_CTRL_LMIXEN			(28)
+#define SUNIV_CODEC_OM_DACA_CTRL_RHPPAMUTE		(27)
+#define SUNIV_CODEC_OM_DACA_CTRL_LHPPAMUTE		(26)
+#define SUNIV_CODEC_OM_DACA_CTRL_RHPIS			(25)
+#define SUNIV_CODEC_OM_DACA_CTRL_LHPIS			(24)
+#define SUNIV_CODEC_OM_DACA_CTRL_HPCOM_CTL		(22)
+#define SUNIV_CODEC_OM_DACA_CTRL_COMPTEN		(21)
+#define SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_MICIN		(20)
+#define SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_LINEIN	(19)
+#define SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_FMIN		(18)
+#define SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_RDAC		(17)
+#define SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_LDAC		(16)
+#define SUNIV_CODEC_OM_DACA_CTRL_HPPAEN			(15)
+#define SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_MICIN		(12)
+#define SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_LINEIN	(11)
+#define SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_FMIN		(10)
+#define SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_LDAC		(9)
+#define SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_RDAC		(8)
+#define SUNIV_CODEC_OM_DACA_CTRL_LTLNMUTE		(7)
+#define SUNIV_CODEC_OM_DACA_CTRL_RTLNMUTE		(6)
+#define SUNIV_CODEC_OM_DACA_CTRL_HPVOL			(0)
+
+/* Analog Input Mixer controls */
+#define SUNIV_CODEC_ADC_ACTL		(0x24)
+#define SUNIV_CODEC_ADC_ADCEN		(31)
+#define SUNIV_CODEC_ADC_MICG		(24)
+#define SUNIV_CODEC_ADC_LINEINVOL	(21)
+#define SUNIV_CODEC_ADC_ADCG		(16)
+#define SUNIV_CODEC_ADC_ADCMIX_MIC	(13)
+#define SUNIV_CODEC_ADC_ADCMIX_FMINL	(12)
+#define SUNIV_CODEC_ADC_ADCMIX_FMINR	(11)
+#define SUNIV_CODEC_ADC_ADCMIX_LINEIN	(10)
+#define SUNIV_CODEC_ADC_ADCMIX_LOUT	(9)
+#define SUNIV_CODEC_ADC_ADCMIX_ROUT	(8)
+#define SUNIV_CODEC_ADC_PASPEEDSELECT	(7)
+#define SUNIV_CODEC_ADC_FMINVOL		(4)
+#define SUNIV_CODEC_ADC_MICAMPEN	(3)
+#define SUNIV_CODEC_ADC_MICBOOST	(0)
+
+#define SUNIV_CODEC_ADC_DBG		(0x4c)
+
 struct sun4i_codec {
 	struct device	*dev;
 	struct regmap	*regmap;
@@ -1218,6 +1275,228 @@ static const struct snd_soc_component_driver sun8i_a23_codec_codec = {
 	.endianness		= 1,
 };
 
+/*suniv F1C100s codec */
+
+/* headphone controls */
+static const char * const suniv_codec_hp_src_enum_text[] = {
+	"DAC", "Mixer",
+};
+
+static SOC_ENUM_DOUBLE_DECL(suniv_codec_hp_src_enum,
+			    SUNIV_CODEC_OM_DACA_CTRL,
+			    SUNIV_CODEC_OM_DACA_CTRL_LHPIS,
+			    SUNIV_CODEC_OM_DACA_CTRL_RHPIS,
+			    suniv_codec_hp_src_enum_text);
+
+static const struct snd_kcontrol_new suniv_codec_hp_src[] = {
+	SOC_DAPM_ENUM("Headphone Source Playback Route",
+		      suniv_codec_hp_src_enum),
+};
+
+/* mixer controls */
+static const struct snd_kcontrol_new suniv_codec_adc_mixer_controls[] = {
+	SOC_DAPM_SINGLE("Right Out Capture Switch", SUNIV_CODEC_ADC_ACTL,
+			SUNIV_CODEC_ADC_ADCMIX_ROUT, 1, 0),
+	SOC_DAPM_SINGLE("Left Out Capture Switch", SUNIV_CODEC_ADC_ACTL,
+			SUNIV_CODEC_ADC_ADCMIX_LOUT, 1, 0),
+	SOC_DAPM_SINGLE("Line In Capture Switch", SUNIV_CODEC_ADC_ACTL,
+			SUNIV_CODEC_ADC_ADCMIX_LINEIN, 1, 0),
+	SOC_DAPM_SINGLE("Right FM In Capture Switch", SUNIV_CODEC_ADC_ACTL,
+			SUNIV_CODEC_ADC_ADCMIX_FMINR, 1, 0),
+	SOC_DAPM_SINGLE("Left FM In Capture Switch", SUNIV_CODEC_ADC_ACTL,
+			SUNIV_CODEC_ADC_ADCMIX_FMINL, 1, 0),
+	SOC_DAPM_SINGLE("Mic Capture Switch", SUNIV_CODEC_ADC_ACTL,
+			SUNIV_CODEC_ADC_ADCMIX_MIC, 1, 0),
+};
+
+static const struct snd_kcontrol_new suniv_codec_dac_lmixer_controls[] = {
+	SOC_DAPM_SINGLE("Right DAC Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_RDAC, 1, 0),
+	SOC_DAPM_SINGLE("Left DAC Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_LDAC, 1, 0),
+	SOC_DAPM_SINGLE("FM In Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_FMIN, 1, 0),
+	SOC_DAPM_SINGLE("Line In Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_LINEIN, 1, 0),
+	SOC_DAPM_SINGLE("Mic In Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_LMIXMUTE_MICIN, 1, 0),
+};
+
+static const struct snd_kcontrol_new suniv_codec_dac_rmixer_controls[] = {
+	SOC_DAPM_SINGLE("Left DAC Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_LDAC, 1, 0),
+	SOC_DAPM_SINGLE("Right DAC Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_RDAC, 1, 0),
+	SOC_DAPM_SINGLE("FM In Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_FMIN, 1, 0),
+	SOC_DAPM_SINGLE("Line In Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_LINEIN, 1, 0),
+	SOC_DAPM_SINGLE("Mic In Playback Switch", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_RMIXMUTE_MICIN, 1, 0),
+};
+
+static const DECLARE_TLV_DB_SCALE(suniv_codec_dvol_scale, -7308, 116, 0);
+static const DECLARE_TLV_DB_SCALE(suniv_codec_hp_vol_scale, -6300, 100, 1);
+static const DECLARE_TLV_DB_SCALE(suniv_codec_out_mixer_pregain_scale,
+				  -450, 150, 0);
+
+static const DECLARE_TLV_DB_RANGE(suniv_codec_mic_gain_scale,
+	0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
+	1, 7, TLV_DB_SCALE_ITEM(2400, 300, 0),
+);
+
+static const struct snd_kcontrol_new suniv_codec_codec_widgets[] = {
+	SOC_SINGLE_TLV("DAC Playback Volume", SUN4I_CODEC_DAC_DPC,
+		       SUN4I_CODEC_DAC_DPC_DVOL, 0x3f, 1,
+		       suniv_codec_dvol_scale),
+	SOC_SINGLE_TLV("Headphone Playback Volume",
+		       SUNIV_CODEC_OM_DACA_CTRL,
+		       SUNIV_CODEC_OM_DACA_CTRL_HPVOL, 0x3f, 0,
+		       suniv_codec_hp_vol_scale),
+	SOC_DOUBLE("Headphone Playback Switch",
+		   SUNIV_CODEC_OM_DACA_CTRL,
+		   SUNIV_CODEC_OM_DACA_CTRL_LHPPAMUTE,
+		   SUNIV_CODEC_OM_DACA_CTRL_RHPPAMUTE, 1, 0),
+	SOC_SINGLE_TLV("Line In Playback Volume",
+		       SUNIV_CODEC_ADC_ACTL, SUNIV_CODEC_ADC_LINEINVOL,
+		       0x7, 0, suniv_codec_out_mixer_pregain_scale),
+	SOC_SINGLE_TLV("FM In Playback Volume",
+		       SUNIV_CODEC_ADC_ACTL, SUNIV_CODEC_ADC_FMINVOL,
+		       0x7, 0, suniv_codec_out_mixer_pregain_scale),
+	SOC_SINGLE_TLV("Mic In Playback Volume",
+		       SUNIV_CODEC_ADC_ACTL, SUNIV_CODEC_ADC_MICG,
+		       0x7, 0, suniv_codec_out_mixer_pregain_scale),
+
+	/* Microphone Amp boost gains */
+	SOC_SINGLE_TLV("Mic Boost Volume", SUNIV_CODEC_ADC_ACTL,
+		       SUNIV_CODEC_ADC_MICBOOST, 0x7, 0,
+		       suniv_codec_mic_gain_scale),
+	SOC_SINGLE_TLV("ADC Capture Volume",
+		       SUNIV_CODEC_ADC_ACTL, SUNIV_CODEC_ADC_ADCG,
+		       0x7, 0, suniv_codec_out_mixer_pregain_scale),
+};
+
+static const struct snd_soc_dapm_widget suniv_codec_codec_dapm_widgets[] = {
+	/* Microphone inputs */
+	SND_SOC_DAPM_INPUT("MIC"),
+
+	/* Microphone Bias */
+	/* deleted: HBIAS, MBIAS */
+
+	/* Mic input path */
+	SND_SOC_DAPM_PGA("Mic Amplifier", SUNIV_CODEC_ADC_ACTL,
+			 SUNIV_CODEC_ADC_MICAMPEN, 0, NULL, 0),
+
+	/* Line In */
+	SND_SOC_DAPM_INPUT("LINEIN"),
+
+	/* FM In */
+	SND_SOC_DAPM_INPUT("FMINR"),
+	SND_SOC_DAPM_INPUT("FMINL"),
+
+	/* Digital parts of the ADCs */
+	SND_SOC_DAPM_SUPPLY("ADC Enable", SUNIV_CODEC_ADC_FIFOC,
+			    SUNIV_CODEC_ADC_FIFOC_EN_AD, 0,
+			    NULL, 0),
+
+	/* Analog parts of the ADCs */
+	SND_SOC_DAPM_ADC("ADC", "Codec Capture", SUNIV_CODEC_ADC_ACTL,
+			 SUNIV_CODEC_ADC_ADCEN, 0),
+
+	/* ADC Mixers */
+	SOC_MIXER_ARRAY("ADC Mixer", SUNIV_CODEC_ADC_ACTL,
+			SND_SOC_NOPM, 0,
+			suniv_codec_adc_mixer_controls),
+
+	/* Digital parts of the DACs */
+	SND_SOC_DAPM_SUPPLY("DAC Enable", SUN4I_CODEC_DAC_DPC,
+			    SUN4I_CODEC_DAC_DPC_EN_DA, 0,
+			    NULL, 0),
+
+	/* Analog parts of the DACs */
+	SND_SOC_DAPM_DAC("Left DAC", "Codec Playback",
+			 SUNIV_CODEC_OM_DACA_CTRL,
+			 SUNIV_CODEC_OM_DACA_CTRL_DACALEN, 0),
+	SND_SOC_DAPM_DAC("Right DAC", "Codec Playback",
+			 SUNIV_CODEC_OM_DACA_CTRL,
+			 SUNIV_CODEC_OM_DACA_CTRL_DACAREN, 0),
+
+	/* Mixers */
+	SOC_MIXER_ARRAY("Left Mixer", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_LMIXEN, 0,
+			suniv_codec_dac_lmixer_controls),
+	SOC_MIXER_ARRAY("Right Mixer", SUNIV_CODEC_OM_DACA_CTRL,
+			SUNIV_CODEC_OM_DACA_CTRL_RMIXEN, 0,
+			suniv_codec_dac_rmixer_controls),
+
+	/* Headphone output path */
+	SND_SOC_DAPM_MUX("Headphone Source Playback Route",
+			 SND_SOC_NOPM, 0, 0, suniv_codec_hp_src),
+	SND_SOC_DAPM_OUT_DRV("Headphone Amp", SUNIV_CODEC_OM_DACA_CTRL,
+			     SUNIV_CODEC_OM_DACA_CTRL_HPPAEN, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("HPCOM Protection", SUNIV_CODEC_OM_DACA_CTRL,
+			    SUNIV_CODEC_OM_DACA_CTRL_COMPTEN, 0, NULL, 0),
+	SND_SOC_DAPM_REG(snd_soc_dapm_supply, "HPCOM", SUNIV_CODEC_OM_DACA_CTRL,
+			 SUNIV_CODEC_OM_DACA_CTRL_HPCOM_CTL, 0x3, 0x3, 0),
+	SND_SOC_DAPM_OUTPUT("HP"),
+};
+
+static const struct snd_soc_dapm_route suniv_codec_codec_dapm_routes[] = {
+	/* DAC Routes */
+	{ "Left DAC", NULL, "DAC Enable" },
+	{ "Right DAC", NULL, "DAC Enable" },
+
+	/* Microphone Routes */
+	{ "Mic Amplifier", NULL, "MIC"},
+
+	/* Left Mixer Routes */
+	{ "Left Mixer", "Right DAC Playback Switch", "Right DAC" },
+	{ "Left Mixer", "Left DAC Playback Switch", "Left DAC" },
+	{ "Left Mixer", "FM In Playback Switch", "FMINL" },
+	{ "Left Mixer", "Line In Playback Switch", "LINEIN" },
+	{ "Left Mixer", "Mic In Playback Switch", "Mic Amplifier" },
+
+	/* Right Mixer Routes */
+	{ "Right Mixer", "Left DAC Playback Switch", "Left DAC" },
+	{ "Right Mixer", "Right DAC Playback Switch", "Right DAC" },
+	{ "Right Mixer", "FM In Playback Switch", "FMINR" },
+	{ "Right Mixer", "Line In Playback Switch", "LINEIN" },
+	{ "Right Mixer", "Mic In Playback Switch", "Mic Amplifier" },
+
+	/* ADC Mixer Routes */
+	{ "ADC Mixer", "Right Out Capture Switch", "Right Mixer" },
+	{ "ADC Mixer", "Left Out Capture Switch", "Left Mixer" },
+	{ "ADC Mixer", "Line In Capture Switch", "LINEIN" },
+	{ "ADC Mixer", "Right FM In Capture Switch", "FMINR" },
+	{ "ADC Mixer", "Left FM In Capture Switch", "FMINL" },
+	{ "ADC Mixer", "Mic Capture Switch", "Mic Amplifier" },
+
+	/* Headphone Routes */
+	{ "Headphone Source Playback Route", "DAC", "Left DAC" },
+	{ "Headphone Source Playback Route", "DAC", "Right DAC" },
+	{ "Headphone Source Playback Route", "Mixer", "Left Mixer" },
+	{ "Headphone Source Playback Route", "Mixer", "Right Mixer" },
+	{ "Headphone Amp", NULL, "Headphone Source Playback Route" },
+	{ "HP", NULL, "Headphone Amp" },
+	{ "HPCOM", NULL, "HPCOM Protection" },
+
+	/* ADC Routes */
+	{ "ADC", NULL, "ADC Mixer" },
+	{ "ADC", NULL, "ADC Enable" },
+};
+
+static const struct snd_soc_component_driver suniv_codec_codec = {
+	.controls		= suniv_codec_codec_widgets,
+	.num_controls		= ARRAY_SIZE(suniv_codec_codec_widgets),
+	.dapm_widgets		= suniv_codec_codec_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(suniv_codec_codec_dapm_widgets),
+	.dapm_routes		= suniv_codec_codec_dapm_routes,
+	.num_dapm_routes	= ARRAY_SIZE(suniv_codec_codec_dapm_routes),
+	.idle_bias_on		= 1,
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+};
+
 static const struct snd_soc_component_driver sun4i_codec_component = {
 	.name			= "sun4i-codec",
 	.legacy_dai_naming	= 1,
@@ -1520,6 +1799,56 @@ static struct snd_soc_card *sun8i_v3s_codec_create_card(struct device *dev)
 	return card;
 };
 
+static const struct snd_soc_dapm_widget suniv_codec_card_dapm_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_LINE("Line In", NULL),
+	SND_SOC_DAPM_LINE("Right FM In", NULL),
+	SND_SOC_DAPM_LINE("Left FM In", NULL),
+	SND_SOC_DAPM_MIC("Mic", NULL),
+	SND_SOC_DAPM_SPK("Speaker", sun4i_codec_spk_event),
+};
+
+/* Connect digital side enables to analog side widgets */
+static const struct snd_soc_dapm_route suniv_codec_card_routes[] = {
+	/* ADC Routes */
+	{ "ADC", NULL, "ADC Enable" },
+	{ "Codec Capture", NULL, "ADC" },
+
+	/* DAC Routes */
+	{ "Left DAC", NULL, "DAC Enable" },
+	{ "Right DAC", NULL, "DAC Enable" },
+	{ "Left DAC", NULL, "Codec Playback" },
+	{ "Right DAC", NULL, "Codec Playback" },
+};
+
+static struct snd_soc_card *suniv_codec_create_card(struct device *dev)
+{
+	struct snd_soc_card *card;
+	int ret;
+
+	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+	if (!card)
+		return ERR_PTR(-ENOMEM);
+
+	card->dai_link = sun4i_codec_create_link(dev, &card->num_links);
+	if (!card->dai_link)
+		return ERR_PTR(-ENOMEM);
+
+	card->dev		= dev;
+	card->name		= "F1C100s Audio Codec";
+	card->dapm_widgets	= suniv_codec_card_dapm_widgets;
+	card->num_dapm_widgets	= ARRAY_SIZE(suniv_codec_card_dapm_widgets);
+	card->dapm_routes	= suniv_codec_card_routes;
+	card->num_dapm_routes	= ARRAY_SIZE(suniv_codec_card_routes);
+	card->fully_routed	= true;
+
+	ret = snd_soc_of_parse_audio_routing(card, "allwinner,audio-routing");
+	if (ret)
+		dev_warn(dev, "failed to parse audio-routing: %d\n", ret);
+
+	return card;
+};
+
 static const struct regmap_config sun4i_codec_regmap_config = {
 	.reg_bits	= 32,
 	.reg_stride	= 4,
@@ -1562,6 +1891,13 @@ static const struct regmap_config sun8i_v3s_codec_regmap_config = {
 	.max_register	= SUN8I_H3_CODEC_ADC_DBG,
 };
 
+static const struct regmap_config suniv_codec_regmap_config = {
+	.reg_bits	= 32,
+	.reg_stride	= 4,
+	.val_bits	= 32,
+	.max_register	= SUNIV_CODEC_ADC_DBG,
+};
+
 struct sun4i_codec_quirks {
 	const struct regmap_config *regmap_config;
 	const struct snd_soc_component_driver *codec;
@@ -1646,6 +1982,17 @@ static const struct sun4i_codec_quirks sun8i_v3s_codec_quirks = {
 	.dma_max_burst	= SUN4I_DMA_MAX_BURST,
 };
 
+static const struct sun4i_codec_quirks suniv_f1c100s_codec_quirks = {
+	.regmap_config	= &suniv_codec_regmap_config,
+	.codec		= &suniv_codec_codec,
+	.create_card	= suniv_codec_create_card,
+	.reg_adc_fifoc	= REG_FIELD(SUNIV_CODEC_ADC_FIFOC, 0, 31),
+	.reg_dac_txdata	= SUN4I_CODEC_DAC_TXDATA,
+	.reg_adc_rxdata	= SUNIV_CODEC_ADC_RXDATA,
+	.has_reset	= true,
+	.dma_max_burst	= SUNIV_DMA_MAX_BURST,
+};
+
 static const struct of_device_id sun4i_codec_of_match[] = {
 	{
 		.compatible = "allwinner,sun4i-a10-codec",
@@ -1671,6 +2018,10 @@ static const struct of_device_id sun4i_codec_of_match[] = {
 		.compatible = "allwinner,sun8i-v3s-codec",
 		.data = &sun8i_v3s_codec_quirks,
 	},
+	{
+		.compatible = "allwinner,suniv-f1c100s-codec",
+		.data = &suniv_f1c100s_codec_quirks,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, sun4i_codec_of_match);
@@ -1846,4 +2197,5 @@ MODULE_AUTHOR("Emilio López <emilio@elopez.com.ar>");
 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
 MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
+MODULE_AUTHOR("Mesih Kilinc <mesikilinc@gmail.com>");
 MODULE_LICENSE("GPL");
-- 
2.34.1

[PATCH v4 09/10] ARM: dts: suniv: f1c100s: Add support for Audio Codec

[Csókás, Bence]

From: Mesih Kilinc <mesihkilinc@gmail.com>

Allwinner suniv F1C100s now has basic audio codec support. Enable it
under device tree.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
[ csokas.bence: Rebased on current master ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---
 arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi b/arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi
index 290efe026ceb..e4b41bc93852 100644
--- a/arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi
+++ b/arch/arm/boot/dts/allwinner/suniv-f1c100s.dtsi
@@ -336,5 +336,19 @@ uart2: serial@1c25800 {
 			resets = <&ccu RST_BUS_UART2>;
 			status = "disabled";
 		};
+
+		codec: codec@1c23c00 {
+			#sound-dai-cells = <0>;
+			compatible = "allwinner,suniv-f1c100s-codec";
+			reg = <0x01c23c00 0x400>;
+			interrupts = <21>;
+			clocks = <&ccu CLK_BUS_CODEC>, <&ccu CLK_CODEC>;
+			clock-names = "apb", "codec";
+			dmas = <&dma SUN4I_DMA_NORMAL 12>,
+			       <&dma SUN4I_DMA_NORMAL 12>;
+			dma-names = "rx", "tx";
+			resets = <&ccu RST_BUS_CODEC>;
+			status = "disabled";
+		};
 	};
 };
-- 
2.34.1

[PATCH v4 10/10] ARM: dts: suniv: f1c100s: Activate Audio Codec for Lichee Pi Nano

[Csókás, Bence]

From: Mesih Kilinc <mesihkilinc@gmail.com>

Allwinner suniv F1C100s now has basic audio codec support. Activate it
for Lichee Pi Nano board.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
[ csokas.bence: Moved and fixed conflict ]
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
---
 .../boot/dts/allwinner/suniv-f1c100s-licheepi-nano.dts    | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/allwinner/suniv-f1c100s-licheepi-nano.dts b/arch/arm/boot/dts/allwinner/suniv-f1c100s-licheepi-nano.dts
index 43896723a994..472ded0aafcf 100644
--- a/arch/arm/boot/dts/allwinner/suniv-f1c100s-licheepi-nano.dts
+++ b/arch/arm/boot/dts/allwinner/suniv-f1c100s-licheepi-nano.dts
@@ -62,6 +62,14 @@ &uart0 {
 	status = "okay";
 };
 
+&codec {
+	allwinner,audio-routing =
+		"Headphone", "HP",
+		"Headphone", "HPCOM",
+		"MIC", "Mic";
+	status = "okay";
+};
+
 &usb_otg {
 	dr_mode = "otg";
 	status = "okay";
-- 
2.34.1

Re: [PATCH v4 06/10] ASoC: sun4i-codec: Add DMA Max Burst field

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 843 bytes --]

On Thu, Oct 31, 2024 at 01:35:32PM +0100, Csókás, Bence wrote:
> From: Mesih Kilinc <mesihkilinc@gmail.com>
> 
> Allwinner suniv F1C100s has similar DMA engine to sun4i but it has
> smaller max burst size compared to sun4i. Add a quirk field to
> differantitate between them.

You've not copied me on the rest of the series so I don't know what's
going on with dependencies.  When sending a patch series it is important
to ensure that all the various maintainers understand what the
relationship between the patches as the expecation is that there will be
interdependencies.  Either copy everyone on the whole series or at least
copy them on the cover letter and explain what's going on.  If there are
no strong interdependencies then it's generally simplest to just send
the patches separately to avoid any possible confusion.

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

Re: [PATCH v4 02/10] dma-engine: sun4i: Add has_reset option to quirk

[Krzysztof Kozlowski]

On 31/10/2024 13:35, Csókás, Bence wrote:
> From: Mesih Kilinc <mesihkilinc@gmail.com>
> 
> Allwinner suniv F1C100s has a reset bit for DMA in CCU. Sun4i do not
> has this bit but in order to support suniv we need to add it. So add
> support for reset bit.
> 
> Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
> [ csokas.bence: Rebased and addressed comments ]
> Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
> ---
> 
> Notes:
>     Changes in v2:
>     * Call reset_control_deassert() unconditionally, as it supports optional resets
>     * Use dev_err_probe()
>     * Whitespace
>     Changes in v3:
>     * More dev_err_probe() fixes
>     Changes in v3:
>     * Use return value of dev_err_probe()
> 
>  drivers/dma/sun4i-dma.c | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c
> index d472f57a39ea..4626cc8ad114 100644
> --- a/drivers/dma/sun4i-dma.c
> +++ b/drivers/dma/sun4i-dma.c
> @@ -15,6 +15,7 @@
>  #include <linux/of_dma.h>
>  #include <linux/of_device.h>
>  #include <linux/platform_device.h>
> +#include <linux/reset.h>
>  #include <linux/slab.h>
>  #include <linux/spinlock.h>
>  
> @@ -159,6 +160,7 @@ struct sun4i_dma_config {
>  	u8 ddma_drq_sdram;
>  
>  	u8 max_burst;
> +	bool has_reset;
>  };
>  
>  struct sun4i_dma_pchan {
> @@ -208,6 +210,7 @@ struct sun4i_dma_dev {
>  	int				irq;
>  	spinlock_t			lock;
>  	const struct sun4i_dma_config *cfg;
> +	struct reset_control *rst;
>  };
>  
>  static struct sun4i_dma_dev *to_sun4i_dma_dev(struct dma_device *dev)
> @@ -1215,6 +1218,15 @@ static int sun4i_dma_probe(struct platform_device *pdev)
>  		return PTR_ERR(priv->clk);
>  	}
>  
> +	if (priv->cfg->has_reset) {
> +		priv->rst = devm_reset_control_get_exclusive(&pdev->dev,
> +							     NULL);

Unnecessary wrapping.

> +		if (IS_ERR(priv->rst)) {

Drop {}.

> +			return dev_err_probe(&pdev->dev, PTR_ERR(priv->rst),
> +						  "Failed to get reset control\n");

And this should be aligned with opening (. Run checkpatch --strict.

> +		}
> +	}
> +
>  	platform_set_drvdata(pdev, priv);
>  	spin_lock_init(&priv->lock);
>  
> @@ -1287,6 +1299,14 @@ static int sun4i_dma_probe(struct platform_device *pdev)
>  		return ret;
>  	}
>  
> +	/* Deassert the reset control */
> +	ret = reset_control_deassert(priv->rst);
> +	if (ret) {
> +		dev_err_probe(&pdev->dev, ret,
> +			"Failed to deassert the reset control\n");

Missing alignment.



Best regards,
Krzysztof

[PATCH v4 01/10] dma-engine: sun4i: Add a quirk to support different chips

[Amit Singh Tomar]

Hi,

> 
> Notes:
>       Changes in v2:
>       * Whitespace
> 
>    drivers/dma/sun4i-dma.c | 138 ++++++++++++++++++++++++++++++----------
>    1 file changed, 106 insertions(+), 32 deletions(-)
> 
> diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c
> index 2e7f9b07fdd2..d472f57a39ea 100644
> --- a/drivers/dma/sun4i-dma.c
> +++ b/drivers/dma/sun4i-dma.c
> @@ -13,6 +13,7 @@
>    #include <linux/interrupt.h>
>    #include <linux/module.h>
>    #include <linux/of_dma.h>
> +#include <linux/of_device.h>
>    #include <linux/platform_device.h>
>    #include <linux/slab.h>
>    #include <linux/spinlock.h>
> @@ -31,6 +32,8 @@
>    #define SUN4I_DMA_CFG_SRC_ADDR_MODE(mode)	((mode) << 5)
>    #define SUN4I_DMA_CFG_SRC_DRQ_TYPE(type)	(type)
>    
> +#define SUN4I_MAX_BURST	8
> +
>    /** Normal DMA register values **/
>    
>    /* Normal DMA source/destination data request type values */
> @@ -132,6 +135,32 @@
>    #define SUN4I_DDMA_MAX_SEG_SIZE		SZ_16M
>    #define SUN4I_DMA_MAX_SEG_SIZE		SUN4I_NDMA_MAX_SEG_SIZE
>    
> +/*
> + * Hardware channels / ports representation
> + *
> + * The hardware is used in several SoCs, with differing numbers
> + * of channels and endpoints. This structure ties those numbers
> + * to a certain compatible string.
> + */
> +struct sun4i_dma_config {
> +	u32 ndma_nr_max_channels;
> +	u32 ndma_nr_max_vchans;
> +
> +	u32 ddma_nr_max_channels;
> +	u32 ddma_nr_max_vchans;
> +
> +	u32 dma_nr_max_channels;
> +
> +	void (*set_dst_data_width)(u32 *p_cfg, s8 data_width);
> +	void (*set_src_data_width)(u32 *p_cfg, s8 data_width);
> +	int (*convert_burst)(u32 maxburst);
> +
> +	u8 ndma_drq_sdram;
> +	u8 ddma_drq_sdram;
> +
> +	u8 max_burst;
> +};
> +
>    struct sun4i_dma_pchan {
>    	/* Register base of channel */
>    	void __iomem			*base;
> @@ -170,7 +199,7 @@ struct sun4i_dma_contract {
>    };
>    
>    struct sun4i_dma_dev {
> -	DECLARE_BITMAP(pchans_used, SUN4I_DMA_NR_MAX_CHANNELS);

Is this macro "SUN4I_DMA_NR_MAX_CHANNELS" referenced elsewhere? If it’s 
not in use, can we clean it up?

> +	unsigned long *pchans_used;
>    	struct dma_device		slave;
>    	struct sun4i_dma_pchan		*pchans;
>    	struct sun4i_dma_vchan		*vchans;
> @@ -178,6 +207,7 @@ struct sun4i_dma_dev {
>    	struct clk			*clk;
>    	int				irq;
>    	spinlock_t			lock;
> +	const struct sun4i_dma_config *cfg;
>    };
>    
>    static struct sun4i_dma_dev *to_sun4i_dma_dev(struct dma_device *dev)
> @@ -200,7 +230,17 @@ static struct device *chan2dev(struct dma_chan *chan)
>    	return &chan->dev->device;
>    }
>    
> -static int convert_burst(u32 maxburst)
> +static void set_dst_data_width_a10(u32 *p_cfg, s8 data_width)
> +{
> +	*p_cfg |= SUN4I_DMA_CFG_DST_DATA_WIDTH(data_width);
> +}
> +
> +static void set_src_data_width_a10(u32 *p_cfg, s8 data_width)
> +{
> +	*p_cfg |= SUN4I_DMA_CFG_SRC_DATA_WIDTH(data_width);
> +}
> +
> +static int convert_burst_a10(u32 maxburst)
>    {
>    	if (maxburst > 8)
>    		return -EINVAL;
> @@ -233,15 +273,15 @@ static struct sun4i_dma_pchan *find_and_use_pchan(struct sun4i_dma_dev *priv,
>    	int i, max;
>    
>    	/*
> -	 * pchans 0-SUN4I_NDMA_NR_MAX_CHANNELS are normal, and
> -	 * SUN4I_NDMA_NR_MAX_CHANNELS+ are dedicated ones
> +	 * pchans 0-priv->cfg->ndma_nr_max_channels are normal, and
> +	 * priv->cfg->ndma_nr_max_channels+ are dedicated ones
>    	 */
>    	if (vchan->is_dedicated) {
> -		i = SUN4I_NDMA_NR_MAX_CHANNELS;
> -		max = SUN4I_DMA_NR_MAX_CHANNELS;
> +		i = priv->cfg->ndma_nr_max_channels;
> +		max = priv->cfg->dma_nr_max_channels;
>    	} else {
>    		i = 0;
> -		max = SUN4I_NDMA_NR_MAX_CHANNELS;
> +		max = priv->cfg->ndma_nr_max_channels;
>    	}
>    
>    	spin_lock_irqsave(&priv->lock, flags);
> @@ -444,6 +484,7 @@ generate_ndma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
>    		      size_t len, struct dma_slave_config *sconfig,
>    		      enum dma_transfer_direction direction)
>    {
> +	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
>    	struct sun4i_dma_promise *promise;
>    	int ret;
>    
> @@ -467,13 +508,13 @@ generate_ndma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
>    		sconfig->src_addr_width, sconfig->dst_addr_width);
>    
>    	/* Source burst */
> -	ret = convert_burst(sconfig->src_maxburst);
> +	ret = priv->cfg->convert_burst(sconfig->src_maxburst);
>    	if (ret < 0)
>    		goto fail;
>    	promise->cfg |= SUN4I_DMA_CFG_SRC_BURST_LENGTH(ret);
>    
>    	/* Destination burst */
> -	ret = convert_burst(sconfig->dst_maxburst);
> +	ret = priv->cfg->convert_burst(sconfig->dst_maxburst);
>    	if (ret < 0)
>    		goto fail;
>    	promise->cfg |= SUN4I_DMA_CFG_DST_BURST_LENGTH(ret);
> @@ -482,13 +523,13 @@ generate_ndma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
>    	ret = convert_buswidth(sconfig->src_addr_width);
>    	if (ret < 0)
>    		goto fail;
> -	promise->cfg |= SUN4I_DMA_CFG_SRC_DATA_WIDTH(ret);
> +	priv->cfg->set_src_data_width(&promise->cfg, ret);
>    
>    	/* Destination bus width */
>    	ret = convert_buswidth(sconfig->dst_addr_width);
>    	if (ret < 0)
>    		goto fail;
> -	promise->cfg |= SUN4I_DMA_CFG_DST_DATA_WIDTH(ret);
> +	priv->cfg->set_dst_data_width(&promise->cfg, ret);
>    
>    	return promise;
>    
> @@ -510,6 +551,7 @@ static struct sun4i_dma_promise *
>    generate_ddma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
>    		      size_t len, struct dma_slave_config *sconfig)
>    {
> +	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
>    	struct sun4i_dma_promise *promise;
>    	int ret;
>    
> @@ -524,13 +566,13 @@ generate_ddma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
>    		SUN4I_DDMA_CFG_BYTE_COUNT_MODE_REMAIN;
>    
>    	/* Source burst */
> -	ret = convert_burst(sconfig->src_maxburst);
> +	ret = priv->cfg->convert_burst(sconfig->src_maxburst);
>    	if (ret < 0)
>    		goto fail;
>    	promise->cfg |= SUN4I_DMA_CFG_SRC_BURST_LENGTH(ret);
>    
>    	/* Destination burst */
> -	ret = convert_burst(sconfig->dst_maxburst);
> +	ret = priv->cfg->convert_burst(sconfig->dst_maxburst);
>    	if (ret < 0)
>    		goto fail;
>    	promise->cfg |= SUN4I_DMA_CFG_DST_BURST_LENGTH(ret);
> @@ -539,13 +581,13 @@ generate_ddma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
>    	ret = convert_buswidth(sconfig->src_addr_width);
>    	if (ret < 0)
>    		goto fail;
> -	promise->cfg |= SUN4I_DMA_CFG_SRC_DATA_WIDTH(ret);
> +	priv->cfg->set_src_data_width(&promise->cfg, ret);
>    
>    	/* Destination bus width */
>    	ret = convert_buswidth(sconfig->dst_addr_width);
>    	if (ret < 0)
>    		goto fail;
> -	promise->cfg |= SUN4I_DMA_CFG_DST_DATA_WIDTH(ret);
> +	priv->cfg->set_dst_data_width(&promise->cfg, ret);
>    
>    	return promise;
>    
> @@ -622,6 +664,7 @@ static struct dma_async_tx_descriptor *
>    sun4i_dma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest,
>    			  dma_addr_t src, size_t len, unsigned long flags)
>    {
> +	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
>    	struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
>    	struct dma_slave_config *sconfig = &vchan->cfg;
>    	struct sun4i_dma_promise *promise;
> @@ -638,8 +681,8 @@ sun4i_dma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest,
>    	 */
>    	sconfig->src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
>    	sconfig->dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
> -	sconfig->src_maxburst = 8;
> -	sconfig->dst_maxburst = 8;
> +	sconfig->src_maxburst = priv->cfg->max_burst;
> +	sconfig->dst_maxburst = priv->cfg->max_burst;
>    
>    	if (vchan->is_dedicated)
>    		promise = generate_ddma_promise(chan, src, dest, len, sconfig);
> @@ -654,11 +697,13 @@ sun4i_dma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest,
>    
>    	/* Configure memcpy mode */
>    	if (vchan->is_dedicated) {
> -		promise->cfg |= SUN4I_DMA_CFG_SRC_DRQ_TYPE(SUN4I_DDMA_DRQ_TYPE_SDRAM) |
> -				SUN4I_DMA_CFG_DST_DRQ_TYPE(SUN4I_DDMA_DRQ_TYPE_SDRAM);
> +		promise->cfg |=
> +			SUN4I_DMA_CFG_SRC_DRQ_TYPE(priv->cfg->ddma_drq_sdram) |
> +			SUN4I_DMA_CFG_DST_DRQ_TYPE(priv->cfg->ddma_drq_sdram);
>    	} else {
> -		promise->cfg |= SUN4I_DMA_CFG_SRC_DRQ_TYPE(SUN4I_NDMA_DRQ_TYPE_SDRAM) |
> -				SUN4I_DMA_CFG_DST_DRQ_TYPE(SUN4I_NDMA_DRQ_TYPE_SDRAM);
> +		promise->cfg |=
> +			SUN4I_DMA_CFG_SRC_DRQ_TYPE(priv->cfg->ndma_drq_sdram) |
> +			SUN4I_DMA_CFG_DST_DRQ_TYPE(priv->cfg->ndma_drq_sdram);
>    	}
>    
>    	/* Fill the contract with our only promise */
> @@ -673,6 +718,7 @@ sun4i_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf, size_t len,
>    			  size_t period_len, enum dma_transfer_direction dir,
>    			  unsigned long flags)
>    {
> +	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
>    	struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
>    	struct dma_slave_config *sconfig = &vchan->cfg;
>    	struct sun4i_dma_promise *promise;
> @@ -696,11 +742,11 @@ sun4i_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf, size_t len,
>    	if (vchan->is_dedicated) {
>    		io_mode = SUN4I_DDMA_ADDR_MODE_IO;
>    		linear_mode = SUN4I_DDMA_ADDR_MODE_LINEAR;
> -		ram_type = SUN4I_DDMA_DRQ_TYPE_SDRAM;
> +		ram_type = priv->cfg->ddma_drq_sdram;
>    	} else {
>    		io_mode = SUN4I_NDMA_ADDR_MODE_IO;
>    		linear_mode = SUN4I_NDMA_ADDR_MODE_LINEAR;
> -		ram_type = SUN4I_NDMA_DRQ_TYPE_SDRAM;
> +		ram_type = priv->cfg->ndma_drq_sdram;
>    	}
>    
>    	if (dir == DMA_MEM_TO_DEV) {
> @@ -793,6 +839,7 @@ sun4i_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
>    			unsigned int sg_len, enum dma_transfer_direction dir,
>    			unsigned long flags, void *context)
>    {
> +	struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
>    	struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
>    	struct dma_slave_config *sconfig = &vchan->cfg;
>    	struct sun4i_dma_promise *promise;
> @@ -818,11 +865,11 @@ sun4i_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
>    	if (vchan->is_dedicated) {
>    		io_mode = SUN4I_DDMA_ADDR_MODE_IO;
>    		linear_mode = SUN4I_DDMA_ADDR_MODE_LINEAR;
> -		ram_type = SUN4I_DDMA_DRQ_TYPE_SDRAM;
> +		ram_type = priv->cfg->ddma_drq_sdram;
>    	} else {
>    		io_mode = SUN4I_NDMA_ADDR_MODE_IO;
>    		linear_mode = SUN4I_NDMA_ADDR_MODE_LINEAR;
> -		ram_type = SUN4I_NDMA_DRQ_TYPE_SDRAM;
> +		ram_type = priv->cfg->ndma_drq_sdram;
>    	}
>    
>    	if (dir == DMA_MEM_TO_DEV)
> @@ -1150,6 +1197,10 @@ static int sun4i_dma_probe(struct platform_device *pdev)
>    	if (!priv)
>    		return -ENOMEM;
>    
> +	priv->cfg = of_device_get_match_data(&pdev->dev);
> +	if (!priv->cfg)
> +		return -ENODEV;
> +
>    	priv->base = devm_platform_ioremap_resource(pdev, 0);
>    	if (IS_ERR(priv->base))
>    		return PTR_ERR(priv->base);
> @@ -1197,23 +1248,26 @@ static int sun4i_dma_probe(struct platform_device *pdev)
>    
>    	priv->slave.dev = &pdev->dev;
>    
> -	priv->pchans = devm_kcalloc(&pdev->dev, SUN4I_DMA_NR_MAX_CHANNELS,
> +	priv->pchans = devm_kcalloc(&pdev->dev, priv->cfg->dma_nr_max_channels,
>    				    sizeof(struct sun4i_dma_pchan), GFP_KERNEL);
>    	priv->vchans = devm_kcalloc(&pdev->dev, SUN4I_DMA_NR_MAX_VCHANS,
>    				    sizeof(struct sun4i_dma_vchan), GFP_KERNEL);
> -	if (!priv->vchans || !priv->pchans)
> +	priv->pchans_used = devm_kcalloc(&pdev->dev,
> +					 BITS_TO_LONGS(priv->cfg->dma_nr_max_channels),
> +					 sizeof(unsigned long), GFP_KERNEL);
> +	if (!priv->vchans || !priv->pchans || !priv->pchans_used)
>    		return -ENOMEM;
>    
>    	/*
> -	 * [0..SUN4I_NDMA_NR_MAX_CHANNELS) are normal pchans, and
> -	 * [SUN4I_NDMA_NR_MAX_CHANNELS..SUN4I_DMA_NR_MAX_CHANNELS) are
> +	 * [0..priv->cfg->ndma_nr_max_channels) are normal pchans, and
> +	 * [priv->cfg->ndma_nr_max_channels..priv->cfg->dma_nr_max_channels) are
>    	 * dedicated ones
>    	 */
> -	for (i = 0; i < SUN4I_NDMA_NR_MAX_CHANNELS; i++)
> +	for (i = 0; i < priv->cfg->ndma_nr_max_channels; i++)
>    		priv->pchans[i].base = priv->base +
>    			SUN4I_NDMA_CHANNEL_REG_BASE(i);
>    
> -	for (j = 0; i < SUN4I_DMA_NR_MAX_CHANNELS; i++, j++) {
> +	for (j = 0; i < priv->cfg->dma_nr_max_channels; i++, j++) {
>    		priv->pchans[i].base = priv->base +
>    			SUN4I_DDMA_CHANNEL_REG_BASE(j);
>    		priv->pchans[i].is_dedicated = 1;
> @@ -1284,8 +1338,28 @@ static void sun4i_dma_remove(struct platform_device *pdev)
>    	clk_disable_unprepare(priv->clk);
>    }
>    
> +static struct sun4i_dma_config sun4i_a10_dma_cfg = {
> +	.ndma_nr_max_channels	= SUN4I_NDMA_NR_MAX_CHANNELS,
> +	.ndma_nr_max_vchans	= SUN4I_NDMA_NR_MAX_VCHANS,
> +
> +	.ddma_nr_max_channels	= SUN4I_DDMA_NR_MAX_CHANNELS,
> +	.ddma_nr_max_vchans	= SUN4I_DDMA_NR_MAX_VCHANS,
> +
> +	.dma_nr_max_channels	= SUN4I_NDMA_NR_MAX_CHANNELS +
> +		SUN4I_DDMA_NR_MAX_CHANNELS,
> +

Or else use "SUN4I_DMA_NR_MAX_CHANNELS" here.

> +	.set_dst_data_width	= set_dst_data_width_a10,
> +	.set_src_data_width	= set_src_data_width_a10,
> +	.convert_burst		= convert_burst_a10,
> +
> +	.ndma_drq_sdram		= SUN4I_NDMA_DRQ_TYPE_SDRAM,
> +	.ddma_drq_sdram		= SUN4I_DDMA_DRQ_TYPE_SDRAM,
> +
> +	.max_burst		= SUN4I_MAX_BURST,
> +};
> +
>    static const struct of_device_id sun4i_dma_match[] = {
> -	{ .compatible = "allwinner,sun4i-a10-dma" },
> +	{ .compatible = "allwinner,sun4i-a10-dma", .data = &sun4i_a10_dma_cfg },
>    	{ /* sentinel */ },
>    };
>    MODULE_DEVICE_TABLE(of, sun4i_dma_match);
> -- 
> 2.34.1
> 
> 
> 

Re: [PATCH v4 03/10] dt-bindings: dmaengine: Add Allwinner suniv F1C100s DMA

[Rob Herring]

On Thu, Oct 31, 2024 at 01:35:29PM +0100, Csókás, Bence wrote:
> Add compatible string for Allwinner suniv F1C100s DMA.
> 
> Acked-by: Conor Dooley <conor.dooley@microchip.com>
> Link: https://lore.kernel.org/linux-kernel/20241024-recycler-borrowing-5d4296fd4a56@spud/

You don't need a link to Conor's ack.

> [ csokas.bence: Reimplemented Mesih Kilinc's binding in YAML ]
> Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
> ---
>  .../devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml      | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml b/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml
> index 02d5bd035409..9b5180c0a7c4 100644
> --- a/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml
> +++ b/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml
> @@ -22,7 +22,9 @@ properties:
>        number.
>  
>    compatible:
> -    const: allwinner,sun4i-a10-dma
> +    enum:
> +      - allwinner,sun4i-a10-dma
> +      - allwinner,suniv-f1c100s-dma
>  
>    reg:
>      maxItems: 1
> -- 
> 2.34.1
> 
> 

[PATCH v4 04/10] dma-engine: sun4i: Add support for Allwinner suniv F1C100s

[Amit Singh Tomar]

Hi,

> 
> From: Mesih Kilinc <mesihkilinc@gmail.com>
> 
> DMA of Allwinner suniv F1C100s is similar to sun4i. It has 4 NDMA, 4
> DDMA channels and endpoints are different. Also F1C100s has reset bit
> for DMA in CCU. Add support for it.
> 
> Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
> [ csokas.bence: Rebased on current master ]
> Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
> ---
>    drivers/dma/Kconfig     |  4 +--
>    drivers/dma/sun4i-dma.c | 60 +++++++++++++++++++++++++++++++++++++++++
>    2 files changed, 62 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
> index d9ec1e69e428..fc25bfc356f3 100644
> --- a/drivers/dma/Kconfig
> +++ b/drivers/dma/Kconfig
> @@ -162,8 +162,8 @@ config DMA_SA11X0
>    
>    config DMA_SUN4I
>    	tristate "Allwinner A10 DMA SoCs support"
> -	depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I
> -	default (MACH_SUN4I || MACH_SUN5I || MACH_SUN7I)
> +	depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || MACH_SUNIV
> +	default (MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || MACH_SUNIV)
>    	select DMA_ENGINE
>    	select DMA_VIRTUAL_CHANNELS
>    	help
> diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c
> index 4626cc8ad114..c0a4e40134dc 100644
> --- a/drivers/dma/sun4i-dma.c
> +++ b/drivers/dma/sun4i-dma.c
> @@ -33,7 +33,11 @@
>    #define SUN4I_DMA_CFG_SRC_ADDR_MODE(mode)	((mode) << 5)
>    #define SUN4I_DMA_CFG_SRC_DRQ_TYPE(type)	(type)
>    
> +#define SUNIV_DMA_CFG_DST_DATA_WIDTH(width)	((width) << 24)
> +#define SUNIV_DMA_CFG_SRC_DATA_WIDTH(width)	((width) << 8)

nit: Are the extra parentheses around width truly necessary? They seem 
to be used throughout the file.

> +
>    #define SUN4I_MAX_BURST	8
> +#define SUNIV_MAX_BURST	4
>    
>    /** Normal DMA register values **/
>    
> @@ -41,6 +45,9 @@
>    #define SUN4I_NDMA_DRQ_TYPE_SDRAM		0x16
>    #define SUN4I_NDMA_DRQ_TYPE_LIMIT		(0x1F + 1)
>    
> +#define SUNIV_NDMA_DRQ_TYPE_SDRAM		0x11
> +#define SUNIV_NDMA_DRQ_TYPE_LIMIT		(0x17 + 1)
> +
>    /** Normal DMA register layout **/
>    
>    /* Dedicated DMA source/destination address mode values */
> @@ -54,6 +61,9 @@
>    #define SUN4I_NDMA_CFG_BYTE_COUNT_MODE_REMAIN	BIT(15)
>    #define SUN4I_NDMA_CFG_SRC_NON_SECURE		BIT(6)
>    
> +#define SUNIV_NDMA_CFG_CONT_MODE		BIT(29)
> +#define SUNIV_NDMA_CFG_WAIT_STATE(n)		((n) << 26)
> +
>    /** Dedicated DMA register values **/
>    
>    /* Dedicated DMA source/destination address mode values */
> @@ -66,6 +76,9 @@
>    #define SUN4I_DDMA_DRQ_TYPE_SDRAM		0x1
>    #define SUN4I_DDMA_DRQ_TYPE_LIMIT		(0x1F + 1)
>    
> +#define SUNIV_DDMA_DRQ_TYPE_SDRAM		0x1
> +#define SUNIV_DDMA_DRQ_TYPE_LIMIT		(0x9 + 1)
> +
>    /** Dedicated DMA register layout **/
>    
>    /* Dedicated DMA configuration register layout */
> @@ -119,6 +132,11 @@
>    #define SUN4I_DMA_NR_MAX_VCHANS						\
>    	(SUN4I_NDMA_NR_MAX_VCHANS + SUN4I_DDMA_NR_MAX_VCHANS)
>    
> +#define SUNIV_NDMA_NR_MAX_CHANNELS	4
> +#define SUNIV_DDMA_NR_MAX_CHANNELS	4
> +#define SUNIV_NDMA_NR_MAX_VCHANS	(24 * 2 - 1)
> +#define SUNIV_DDMA_NR_MAX_VCHANS	10
> +
>    /* This set of SUN4I_DDMA timing parameters were found experimentally while
>     * working with the SPI driver and seem to make it behave correctly */
>    #define SUN4I_DDMA_MAGIC_SPI_PARAMETERS \
> @@ -243,6 +261,16 @@ static void set_src_data_width_a10(u32 *p_cfg, s8 data_width)
>    	*p_cfg |= SUN4I_DMA_CFG_SRC_DATA_WIDTH(data_width);
>    }
>    
> +static void set_dst_data_width_f1c100s(u32 *p_cfg, s8 data_width)
> +{
> +	*p_cfg |= SUNIV_DMA_CFG_DST_DATA_WIDTH(data_width);
> +}
> +
> +static void set_src_data_width_f1c100s(u32 *p_cfg, s8 data_width)
> +{
> +	*p_cfg |= SUNIV_DMA_CFG_SRC_DATA_WIDTH(data_width);
> +}
> +
>    static int convert_burst_a10(u32 maxburst)
>    {
>    	if (maxburst > 8)
> @@ -252,6 +280,15 @@ static int convert_burst_a10(u32 maxburst)
>    	return (maxburst >> 2);
>    }
>    
> +static int convert_burst_f1c100s(u32 maxburst)
> +{
> +	if (maxburst > 4)
> +		return -EINVAL;
> +
> +	/* 1 -> 0, 4 -> 1 */
> +	return (maxburst >> 2);
> +}
> +
>    static int convert_buswidth(enum dma_slave_buswidth addr_width)
>    {
>    	if (addr_width > DMA_SLAVE_BUSWIDTH_4_BYTES)
> @@ -1379,8 +1416,31 @@ static struct sun4i_dma_config sun4i_a10_dma_cfg = {
>    	.has_reset		= false,
>    };
>    
> +static struct sun4i_dma_config suniv_f1c100s_dma_cfg = {
> +	.ndma_nr_max_channels	= SUNIV_NDMA_NR_MAX_CHANNELS,
> +	.ndma_nr_max_vchans	= SUNIV_NDMA_NR_MAX_VCHANS,
> +
> +	.ddma_nr_max_channels	= SUNIV_DDMA_NR_MAX_CHANNELS,
> +	.ddma_nr_max_vchans	= SUNIV_DDMA_NR_MAX_VCHANS,
> +
> +	.dma_nr_max_channels	= SUNIV_NDMA_NR_MAX_CHANNELS +
> +		SUNIV_DDMA_NR_MAX_CHANNELS,
> +
> +	.set_dst_data_width	= set_dst_data_width_f1c100s,
> +	.set_src_data_width	= set_src_data_width_f1c100s,
> +	.convert_burst		= convert_burst_f1c100s,
> +
> +	.ndma_drq_sdram		= SUNIV_NDMA_DRQ_TYPE_SDRAM,
> +	.ddma_drq_sdram		= SUNIV_DDMA_DRQ_TYPE_SDRAM,
> +
> +	.max_burst		= SUNIV_MAX_BURST,
> +	.has_reset		= true,
> +};
> +
>    static const struct of_device_id sun4i_dma_match[] = {
>    	{ .compatible = "allwinner,sun4i-a10-dma", .data = &sun4i_a10_dma_cfg },
> +	{ .compatible = "allwinner,suniv-f1c100s-dma",
> +		.data = &suniv_f1c100s_dma_cfg },
>    	{ /* sentinel */ },
>    };
>    MODULE_DEVICE_TABLE(of, sun4i_dma_match);
> -- 
> 2.34.1
> 
> 
> 

Re: [PATCH v4 03/10] dt-bindings: dmaengine: Add Allwinner suniv F1C100s DMA

[Csókás Bence]

On 2024. 10. 31. 19:17, Rob Herring wrote:
> On Thu, Oct 31, 2024 at 01:35:29PM +0100, Csókás, Bence wrote:
>> Add compatible string for Allwinner suniv F1C100s DMA.
>>
>> Acked-by: Conor Dooley <conor.dooley@microchip.com>
>> Link: https://lore.kernel.org/linux-kernel/20241024-recycler-borrowing-5d4296fd4a56@spud/
> 
> You don't need a link to Conor's ack.

I don't? I thought whenever I collect a tag I should provide the link as 
well...

Re: [PATCH v4 04/10] dma-engine: sun4i: Add support for Allwinner suniv F1C100s

[Csókás Bence]

On 2024. 10. 31. 20:05, Amit Singh Tomar wrote:
>>    #define SUN4I_DMA_CFG_SRC_ADDR_MODE(mode)    ((mode) << 5)
>>    #define SUN4I_DMA_CFG_SRC_DRQ_TYPE(type)    (type)
>> +#define SUNIV_DMA_CFG_DST_DATA_WIDTH(width)    ((width) << 24)
>> +#define SUNIV_DMA_CFG_SRC_DATA_WIDTH(width)    ((width) << 8)
> 
> nit: Are the extra parentheses around width truly necessary? They seem 
> to be used throughout the file.

It's macro safety. So for instance if someone writes 
~SUNIV_DMA_CFG_DST_DATA_WIDTH(1 + 2), which would expand to ~1 + 2 << 24 
it doesn't get mis-interpreted as (~1) + (2 << 24) for instance. So 
yeah, I sure hope that _all code_ that has macros with parameters did 
not forget to wrap everything in parentheses, and not just "throughout 
[this] file".

Bence