[PATCH v1 1/6] media: ipu3-cio2: Replace open-coded for_each_set_bit()

[PATCH v1 1/6] media: ipu3-cio2: Replace open-coded for_each_set_bit()

[Andy Shevchenko]

Use for_each_set_bit() instead of open-coding it to simplify the code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 75 +++++++++----------
 1 file changed, 36 insertions(+), 39 deletions(-)

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index 9f75c9303416..5fb379e91071 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -11,6 +11,7 @@
  * et al.
  */
 
+#include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/iopoll.h>
@@ -612,6 +613,20 @@ static const char *const cio2_irq_errs[] = {
 	"non-matching Long Packet stalled",
 };
 
+static void cio2_irq_log_irq_errs(struct device *dev, u8 port, u32 status)
+{
+	unsigned long csi2_status = status;
+	unsigned int i;
+
+	for_each_set_bit(i, &csi2_status, ARRAY_SIZE(cio2_irq_errs))
+		dev_err(dev, "CSI-2 receiver port %i: %s\n",
+			port, cio2_irq_errs[i]);
+
+	if (fls_long(csi2_status) >= ARRAY_SIZE(cio2_irq_errs))
+		dev_warn(dev, "unknown CSI2 error 0x%lx on port %i\n",
+			 csi2_status, port);
+}
+
 static const char *const cio2_port_errs[] = {
 	"ECC recoverable",
 	"DPHY not recoverable",
@@ -622,6 +637,15 @@ static const char *const cio2_port_errs[] = {
 	"PKT2LONG",
 };
 
+static void cio2_irq_log_port_errs(struct device *dev, u8 port, u32 status)
+{
+	unsigned long port_status = status;
+	unsigned int i;
+
+	for_each_set_bit(i, &port_status, ARRAY_SIZE(cio2_port_errs))
+		dev_err(dev, "port %i error %s\n", port, cio2_port_errs[i]);
+}
+
 static void cio2_irq_handle_once(struct cio2_device *cio2, u32 int_status)
 {
 	void __iomem *const base = cio2->base;
@@ -687,59 +711,32 @@ static void cio2_irq_handle_once(struct cio2_device *cio2, u32 int_status)
 
 	if (int_status & (CIO2_INT_IOIE | CIO2_INT_IOIRQ)) {
 		/* CSI2 receiver (error) interrupt */
-		u32 ie_status, ie_clear;
 		unsigned int port;
+		u32 ie_status;
 
-		ie_clear = readl(base + CIO2_REG_INT_STS_EXT_IE);
-		ie_status = ie_clear;
+		ie_status = readl(base + CIO2_REG_INT_STS_EXT_IE);
 
 		for (port = 0; port < CIO2_NUM_PORTS; port++) {
 			u32 port_status = (ie_status >> (port * 8)) & 0xff;
-			u32 err_mask = BIT_MASK(ARRAY_SIZE(cio2_port_errs)) - 1;
-			void __iomem *const csi_rx_base =
-						base + CIO2_REG_PIPE_BASE(port);
-			unsigned int i;
-
-			while (port_status & err_mask) {
-				i = ffs(port_status) - 1;
-				dev_err(dev, "port %i error %s\n",
-					port, cio2_port_errs[i]);
-				ie_status &= ~BIT(port * 8 + i);
-				port_status &= ~BIT(i);
-			}
+
+			cio2_irq_log_port_errs(dev, port, port_status);
 
 			if (ie_status & CIO2_INT_EXT_IE_IRQ(port)) {
-				u32 csi2_status, csi2_clear;
+				void __iomem *csi_rx_base =
+						base + CIO2_REG_PIPE_BASE(port);
+				u32 csi2_status;
 
 				csi2_status = readl(csi_rx_base +
 						CIO2_REG_IRQCTRL_STATUS);
-				csi2_clear = csi2_status;
-				err_mask =
-					BIT_MASK(ARRAY_SIZE(cio2_irq_errs)) - 1;
-
-				while (csi2_status & err_mask) {
-					i = ffs(csi2_status) - 1;
-					dev_err(dev,
-						"CSI-2 receiver port %i: %s\n",
-							port, cio2_irq_errs[i]);
-					csi2_status &= ~BIT(i);
-				}
-
-				writel(csi2_clear,
-				       csi_rx_base + CIO2_REG_IRQCTRL_CLEAR);
-				if (csi2_status)
-					dev_warn(dev,
-						 "unknown CSI2 error 0x%x on port %i\n",
-						 csi2_status, port);
 
-				ie_status &= ~CIO2_INT_EXT_IE_IRQ(port);
+				cio2_irq_log_irq_errs(dev, port, csi2_status);
+
+				writel(csi2_status,
+				       csi_rx_base + CIO2_REG_IRQCTRL_CLEAR);
 			}
 		}
 
-		writel(ie_clear, base + CIO2_REG_INT_STS_EXT_IE);
-		if (ie_status)
-			dev_warn(dev, "unknown interrupt 0x%x on IE\n",
-				 ie_status);
+		writel(ie_status, base + CIO2_REG_INT_STS_EXT_IE);
 
 		int_status &= ~(CIO2_INT_IOIE | CIO2_INT_IOIRQ);
 	}
-- 
2.30.2

[PATCH v1 2/6] media: ipu3-cio2: Use temporary storage for struct device pointer

[Andy Shevchenko]

Use temporary storage for struct device pointer to simplify the code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 138 +++++++++---------
 1 file changed, 67 insertions(+), 71 deletions(-)

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index 5fb379e91071..d3358817db6f 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -103,26 +103,29 @@ static inline u32 cio2_bytesperline(const unsigned int width)
 
 static void cio2_fbpt_exit_dummy(struct cio2_device *cio2)
 {
+	struct device *dev = &cio2->pci_dev->dev;
+
 	if (cio2->dummy_lop) {
-		dma_free_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
-				  cio2->dummy_lop, cio2->dummy_lop_bus_addr);
+		dma_free_coherent(dev, PAGE_SIZE, cio2->dummy_lop,
+				  cio2->dummy_lop_bus_addr);
 		cio2->dummy_lop = NULL;
 	}
 	if (cio2->dummy_page) {
-		dma_free_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
-				  cio2->dummy_page, cio2->dummy_page_bus_addr);
+		dma_free_coherent(dev, PAGE_SIZE, cio2->dummy_page,
+				  cio2->dummy_page_bus_addr);
 		cio2->dummy_page = NULL;
 	}
 }
 
 static int cio2_fbpt_init_dummy(struct cio2_device *cio2)
 {
+	struct device *dev = &cio2->pci_dev->dev;
 	unsigned int i;
 
-	cio2->dummy_page = dma_alloc_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
+	cio2->dummy_page = dma_alloc_coherent(dev, PAGE_SIZE,
 					      &cio2->dummy_page_bus_addr,
 					      GFP_KERNEL);
-	cio2->dummy_lop = dma_alloc_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
+	cio2->dummy_lop = dma_alloc_coherent(dev, PAGE_SIZE,
 					     &cio2->dummy_lop_bus_addr,
 					     GFP_KERNEL);
 	if (!cio2->dummy_page || !cio2->dummy_lop) {
@@ -498,6 +501,7 @@ static int cio2_hw_init(struct cio2_device *cio2, struct cio2_queue *q)
 
 static void cio2_hw_exit(struct cio2_device *cio2, struct cio2_queue *q)
 {
+	struct device *dev = &cio2->pci_dev->dev;
 	void __iomem *const base = cio2->base;
 	unsigned int i;
 	u32 value;
@@ -515,8 +519,7 @@ static void cio2_hw_exit(struct cio2_device *cio2, struct cio2_queue *q)
 				 value, value & CIO2_CDMAC0_DMA_HALTED,
 				 4000, 2000000);
 	if (ret)
-		dev_err(&cio2->pci_dev->dev,
-			"DMA %i can not be halted\n", CIO2_DMA_CHAN);
+		dev_err(dev, "DMA %i can not be halted\n", CIO2_DMA_CHAN);
 
 	for (i = 0; i < CIO2_NUM_PORTS; i++) {
 		writel(readl(base + CIO2_REG_PXM_FRF_CFG(i)) |
@@ -540,8 +543,7 @@ static void cio2_buffer_done(struct cio2_device *cio2, unsigned int dma_chan)
 
 	entry = &q->fbpt[q->bufs_first * CIO2_MAX_LOPS];
 	if (entry->first_entry.ctrl & CIO2_FBPT_CTRL_VALID) {
-		dev_warn(&cio2->pci_dev->dev,
-			 "no ready buffers found on DMA channel %u\n",
+		dev_warn(dev, "no ready buffers found on DMA channel %u\n",
 			 dma_chan);
 		return;
 	}
@@ -558,8 +560,7 @@ static void cio2_buffer_done(struct cio2_device *cio2, unsigned int dma_chan)
 
 			q->bufs[q->bufs_first] = NULL;
 			atomic_dec(&q->bufs_queued);
-			dev_dbg(&cio2->pci_dev->dev,
-				"buffer %i done\n", b->vbb.vb2_buf.index);
+			dev_dbg(dev, "buffer %i done\n", b->vbb.vb2_buf.index);
 
 			b->vbb.vb2_buf.timestamp = ns;
 			b->vbb.field = V4L2_FIELD_NONE;
@@ -648,8 +649,8 @@ static void cio2_irq_log_port_errs(struct device *dev, u8 port, u32 status)
 
 static void cio2_irq_handle_once(struct cio2_device *cio2, u32 int_status)
 {
-	void __iomem *const base = cio2->base;
 	struct device *dev = &cio2->pci_dev->dev;
+	void __iomem *const base = cio2->base;
 
 	if (int_status & CIO2_INT_IOOE) {
 		/*
@@ -792,6 +793,7 @@ static int cio2_vb2_queue_setup(struct vb2_queue *vq,
 				struct device *alloc_devs[])
 {
 	struct cio2_device *cio2 = vb2_get_drv_priv(vq);
+	struct device *dev = &cio2->pci_dev->dev;
 	struct cio2_queue *q = vb2q_to_cio2_queue(vq);
 	unsigned int i;
 
@@ -799,7 +801,7 @@ static int cio2_vb2_queue_setup(struct vb2_queue *vq,
 
 	for (i = 0; i < *num_planes; ++i) {
 		sizes[i] = q->format.plane_fmt[i].sizeimage;
-		alloc_devs[i] = &cio2->pci_dev->dev;
+		alloc_devs[i] = dev;
 	}
 
 	*num_buffers = clamp_val(*num_buffers, 1, CIO2_MAX_BUFFERS);
@@ -876,6 +878,7 @@ static int cio2_vb2_buf_init(struct vb2_buffer *vb)
 static void cio2_vb2_buf_queue(struct vb2_buffer *vb)
 {
 	struct cio2_device *cio2 = vb2_get_drv_priv(vb->vb2_queue);
+	struct device *dev = &cio2->pci_dev->dev;
 	struct cio2_queue *q =
 		container_of(vb->vb2_queue, struct cio2_queue, vbq);
 	struct cio2_buffer *b =
@@ -886,7 +889,7 @@ static void cio2_vb2_buf_queue(struct vb2_buffer *vb)
 	int bufs_queued = atomic_inc_return(&q->bufs_queued);
 	u32 fbpt_rp;
 
-	dev_dbg(&cio2->pci_dev->dev, "queue buffer %d\n", vb->index);
+	dev_dbg(dev, "queue buffer %d\n", vb->index);
 
 	/*
 	 * This code queues the buffer to the CIO2 DMA engine, which starts
@@ -937,12 +940,12 @@ static void cio2_vb2_buf_queue(struct vb2_buffer *vb)
 			return;
 		}
 
-		dev_dbg(&cio2->pci_dev->dev, "entry %i was full!\n", next);
+		dev_dbg(dev, "entry %i was full!\n", next);
 		next = (next + 1) % CIO2_MAX_BUFFERS;
 	}
 
 	local_irq_restore(flags);
-	dev_err(&cio2->pci_dev->dev, "error: all cio2 entries were full!\n");
+	dev_err(dev, "error: all cio2 entries were full!\n");
 	atomic_dec(&q->bufs_queued);
 	vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
 }
@@ -951,6 +954,7 @@ static void cio2_vb2_buf_queue(struct vb2_buffer *vb)
 static void cio2_vb2_buf_cleanup(struct vb2_buffer *vb)
 {
 	struct cio2_device *cio2 = vb2_get_drv_priv(vb->vb2_queue);
+	struct device *dev = &cio2->pci_dev->dev;
 	struct cio2_buffer *b =
 		container_of(vb, struct cio2_buffer, vbb.vb2_buf);
 	unsigned int i;
@@ -958,7 +962,7 @@ static void cio2_vb2_buf_cleanup(struct vb2_buffer *vb)
 	/* Free LOP table */
 	for (i = 0; i < CIO2_MAX_LOPS; i++) {
 		if (b->lop[i])
-			dma_free_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
+			dma_free_coherent(dev, PAGE_SIZE,
 					  b->lop[i], b->lop_bus_addr[i]);
 	}
 }
@@ -967,14 +971,15 @@ static int cio2_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
 {
 	struct cio2_queue *q = vb2q_to_cio2_queue(vq);
 	struct cio2_device *cio2 = vb2_get_drv_priv(vq);
+	struct device *dev = &cio2->pci_dev->dev;
 	int r;
 
 	cio2->cur_queue = q;
 	atomic_set(&q->frame_sequence, 0);
 
-	r = pm_runtime_resume_and_get(&cio2->pci_dev->dev);
+	r = pm_runtime_resume_and_get(dev);
 	if (r < 0) {
-		dev_info(&cio2->pci_dev->dev, "failed to set power %d\n", r);
+		dev_info(dev, "failed to set power %d\n", r);
 		return r;
 	}
 
@@ -1000,9 +1005,9 @@ static int cio2_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
 fail_hw:
 	media_pipeline_stop(&q->vdev.entity);
 fail_pipeline:
-	dev_dbg(&cio2->pci_dev->dev, "failed to start streaming (%d)\n", r);
+	dev_dbg(dev, "failed to start streaming (%d)\n", r);
 	cio2_vb2_return_all_buffers(q, VB2_BUF_STATE_QUEUED);
-	pm_runtime_put(&cio2->pci_dev->dev);
+	pm_runtime_put(dev);
 
 	return r;
 }
@@ -1011,16 +1016,16 @@ static void cio2_vb2_stop_streaming(struct vb2_queue *vq)
 {
 	struct cio2_queue *q = vb2q_to_cio2_queue(vq);
 	struct cio2_device *cio2 = vb2_get_drv_priv(vq);
+	struct device *dev = &cio2->pci_dev->dev;
 
 	if (v4l2_subdev_call(q->sensor, video, s_stream, 0))
-		dev_err(&cio2->pci_dev->dev,
-			"failed to stop sensor streaming\n");
+		dev_err(dev, "failed to stop sensor streaming\n");
 
 	cio2_hw_exit(cio2, q);
 	synchronize_irq(cio2->pci_dev->irq);
 	cio2_vb2_return_all_buffers(q, VB2_BUF_STATE_ERROR);
 	media_pipeline_stop(&q->vdev.entity);
-	pm_runtime_put(&cio2->pci_dev->dev);
+	pm_runtime_put(dev);
 	cio2->streaming = false;
 }
 
@@ -1312,12 +1317,12 @@ static int cio2_video_link_validate(struct media_link *link)
 						struct video_device, entity);
 	struct cio2_queue *q = container_of(vd, struct cio2_queue, vdev);
 	struct cio2_device *cio2 = video_get_drvdata(vd);
+	struct device *dev = &cio2->pci_dev->dev;
 	struct v4l2_subdev_format source_fmt;
 	int ret;
 
 	if (!media_entity_remote_pad(link->sink->entity->pads)) {
-		dev_info(&cio2->pci_dev->dev,
-			 "video node %s pad not connected\n", vd->name);
+		dev_info(dev, "video node %s pad not connected\n", vd->name);
 		return -ENOTCONN;
 	}
 
@@ -1327,8 +1332,7 @@ static int cio2_video_link_validate(struct media_link *link)
 
 	if (source_fmt.format.width != q->format.width ||
 	    source_fmt.format.height != q->format.height) {
-		dev_err(&cio2->pci_dev->dev,
-			"Wrong width or height %ux%u (%ux%u expected)\n",
+		dev_err(dev, "Wrong width or height %ux%u (%ux%u expected)\n",
 			q->format.width, q->format.height,
 			source_fmt.format.width, source_fmt.format.height);
 		return -EINVAL;
@@ -1409,6 +1413,7 @@ static int cio2_notifier_complete(struct v4l2_async_notifier *notifier)
 {
 	struct cio2_device *cio2 = container_of(notifier, struct cio2_device,
 						notifier);
+	struct device *dev = &cio2->pci_dev->dev;
 	struct sensor_async_subdev *s_asd;
 	struct v4l2_async_subdev *asd;
 	struct cio2_queue *q;
@@ -1425,8 +1430,7 @@ static int cio2_notifier_complete(struct v4l2_async_notifier *notifier)
 				break;
 
 		if (pad == q->sensor->entity.num_pads) {
-			dev_err(&cio2->pci_dev->dev,
-				"failed to find src pad for %s\n",
+			dev_err(dev, "failed to find src pad for %s\n",
 				q->sensor->name);
 			return -ENXIO;
 		}
@@ -1436,8 +1440,7 @@ static int cio2_notifier_complete(struct v4l2_async_notifier *notifier)
 				&q->subdev.entity, CIO2_PAD_SINK,
 				0);
 		if (ret) {
-			dev_err(&cio2->pci_dev->dev,
-				"failed to create link for %s\n",
+			dev_err(dev, "failed to create link for %s\n",
 				q->sensor->name);
 			return ret;
 		}
@@ -1454,6 +1457,7 @@ static const struct v4l2_async_notifier_operations cio2_async_ops = {
 
 static int cio2_parse_firmware(struct cio2_device *cio2)
 {
+	struct device *dev = &cio2->pci_dev->dev;
 	unsigned int i;
 	int ret;
 
@@ -1464,10 +1468,8 @@ static int cio2_parse_firmware(struct cio2_device *cio2)
 		struct sensor_async_subdev *s_asd;
 		struct fwnode_handle *ep;
 
-		ep = fwnode_graph_get_endpoint_by_id(
-			dev_fwnode(&cio2->pci_dev->dev), i, 0,
-			FWNODE_GRAPH_ENDPOINT_NEXT);
-
+		ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), i, 0,
+						FWNODE_GRAPH_ENDPOINT_NEXT);
 		if (!ep)
 			continue;
 
@@ -1501,8 +1503,7 @@ static int cio2_parse_firmware(struct cio2_device *cio2)
 	cio2->notifier.ops = &cio2_async_ops;
 	ret = v4l2_async_notifier_register(&cio2->v4l2_dev, &cio2->notifier);
 	if (ret)
-		dev_err(&cio2->pci_dev->dev,
-			"failed to register async notifier : %d\n", ret);
+		dev_err(dev, "failed to register async notifier : %d\n", ret);
 
 	return ret;
 }
@@ -1521,7 +1522,7 @@ static int cio2_queue_init(struct cio2_device *cio2, struct cio2_queue *q)
 	static const u32 default_width = 1936;
 	static const u32 default_height = 1096;
 	const struct ipu3_cio2_fmt dflt_fmt = formats[0];
-
+	struct device *dev = &cio2->pci_dev->dev;
 	struct video_device *vdev = &q->vdev;
 	struct vb2_queue *vbq = &q->vbq;
 	struct v4l2_subdev *subdev = &q->subdev;
@@ -1563,8 +1564,7 @@ static int cio2_queue_init(struct cio2_device *cio2, struct cio2_queue *q)
 	subdev->internal_ops = &cio2_subdev_internal_ops;
 	r = media_entity_pads_init(&subdev->entity, CIO2_PADS, q->subdev_pads);
 	if (r) {
-		dev_err(&cio2->pci_dev->dev,
-			"failed initialize subdev media entity (%d)\n", r);
+		dev_err(dev, "failed initialize subdev media entity (%d)\n", r);
 		goto fail_subdev_media_entity;
 	}
 
@@ -1572,8 +1572,8 @@ static int cio2_queue_init(struct cio2_device *cio2, struct cio2_queue *q)
 	vdev->entity.ops = &cio2_video_entity_ops;
 	r = media_entity_pads_init(&vdev->entity, 1, &q->vdev_pad);
 	if (r) {
-		dev_err(&cio2->pci_dev->dev,
-			"failed initialize videodev media entity (%d)\n", r);
+		dev_err(dev, "failed initialize videodev media entity (%d)\n",
+			r);
 		goto fail_vdev_media_entity;
 	}
 
@@ -1587,8 +1587,7 @@ static int cio2_queue_init(struct cio2_device *cio2, struct cio2_queue *q)
 	v4l2_set_subdevdata(subdev, cio2);
 	r = v4l2_device_register_subdev(&cio2->v4l2_dev, subdev);
 	if (r) {
-		dev_err(&cio2->pci_dev->dev,
-			"failed initialize subdev (%d)\n", r);
+		dev_err(dev, "failed initialize subdev (%d)\n", r);
 		goto fail_subdev;
 	}
 
@@ -1604,8 +1603,7 @@ static int cio2_queue_init(struct cio2_device *cio2, struct cio2_queue *q)
 	vbq->lock = &q->lock;
 	r = vb2_queue_init(vbq);
 	if (r) {
-		dev_err(&cio2->pci_dev->dev,
-			"failed to initialize videobuf2 queue (%d)\n", r);
+		dev_err(dev, "failed to initialize videobuf2 queue (%d)\n", r);
 		goto fail_subdev;
 	}
 
@@ -1622,8 +1620,7 @@ static int cio2_queue_init(struct cio2_device *cio2, struct cio2_queue *q)
 	video_set_drvdata(vdev, cio2);
 	r = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
 	if (r) {
-		dev_err(&cio2->pci_dev->dev,
-			"failed to register video device (%d)\n", r);
+		dev_err(dev, "failed to register video device (%d)\n", r);
 		goto fail_vdev;
 	}
 
@@ -1645,7 +1642,7 @@ static int cio2_queue_init(struct cio2_device *cio2, struct cio2_queue *q)
 fail_vdev_media_entity:
 	media_entity_cleanup(&subdev->entity);
 fail_subdev_media_entity:
-	cio2_fbpt_exit(q, &cio2->pci_dev->dev);
+	cio2_fbpt_exit(q, dev);
 fail_fbpt:
 	mutex_destroy(&q->subdev_lock);
 	mutex_destroy(&q->lock);
@@ -1712,11 +1709,12 @@ static int cio2_check_fwnode_graph(struct fwnode_handle *fwnode)
 static int cio2_pci_probe(struct pci_dev *pci_dev,
 			  const struct pci_device_id *id)
 {
-	struct fwnode_handle *fwnode = dev_fwnode(&pci_dev->dev);
+	struct device *dev = &pci_dev->dev;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	struct cio2_device *cio2;
 	int r;
 
-	cio2 = devm_kzalloc(&pci_dev->dev, sizeof(*cio2), GFP_KERNEL);
+	cio2 = devm_kzalloc(dev, sizeof(*cio2), GFP_KERNEL);
 	if (!cio2)
 		return -ENOMEM;
 	cio2->pci_dev = pci_dev;
@@ -1729,7 +1727,7 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,
 	r = cio2_check_fwnode_graph(fwnode);
 	if (r) {
 		if (fwnode && !IS_ERR_OR_NULL(fwnode->secondary)) {
-			dev_err(&pci_dev->dev, "fwnode graph has no endpoints connected\n");
+			dev_err(dev, "fwnode graph has no endpoints connected\n");
 			return -EINVAL;
 		}
 
@@ -1740,16 +1738,16 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,
 
 	r = pcim_enable_device(pci_dev);
 	if (r) {
-		dev_err(&pci_dev->dev, "failed to enable device (%d)\n", r);
+		dev_err(dev, "failed to enable device (%d)\n", r);
 		return r;
 	}
 
-	dev_info(&pci_dev->dev, "device 0x%x (rev: 0x%x)\n",
+	dev_info(dev, "device 0x%x (rev: 0x%x)\n",
 		 pci_dev->device, pci_dev->revision);
 
 	r = pcim_iomap_regions(pci_dev, 1 << CIO2_PCI_BAR, pci_name(pci_dev));
 	if (r) {
-		dev_err(&pci_dev->dev, "failed to remap I/O memory (%d)\n", r);
+		dev_err(dev, "failed to remap I/O memory (%d)\n", r);
 		return -ENODEV;
 	}
 
@@ -1761,13 +1759,13 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,
 
 	r = pci_set_dma_mask(pci_dev, CIO2_DMA_MASK);
 	if (r) {
-		dev_err(&pci_dev->dev, "failed to set DMA mask (%d)\n", r);
+		dev_err(dev, "failed to set DMA mask (%d)\n", r);
 		return -ENODEV;
 	}
 
 	r = pci_enable_msi(pci_dev);
 	if (r) {
-		dev_err(&pci_dev->dev, "failed to enable MSI (%d)\n", r);
+		dev_err(dev, "failed to enable MSI (%d)\n", r);
 		return r;
 	}
 
@@ -1777,7 +1775,7 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,
 
 	mutex_init(&cio2->lock);
 
-	cio2->media_dev.dev = &cio2->pci_dev->dev;
+	cio2->media_dev.dev = dev;
 	strscpy(cio2->media_dev.model, CIO2_DEVICE_NAME,
 		sizeof(cio2->media_dev.model));
 	snprintf(cio2->media_dev.bus_info, sizeof(cio2->media_dev.bus_info),
@@ -1790,10 +1788,9 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,
 		goto fail_mutex_destroy;
 
 	cio2->v4l2_dev.mdev = &cio2->media_dev;
-	r = v4l2_device_register(&pci_dev->dev, &cio2->v4l2_dev);
+	r = v4l2_device_register(dev, &cio2->v4l2_dev);
 	if (r) {
-		dev_err(&pci_dev->dev,
-			"failed to register V4L2 device (%d)\n", r);
+		dev_err(dev, "failed to register V4L2 device (%d)\n", r);
 		goto fail_media_device_unregister;
 	}
 
@@ -1808,15 +1805,15 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,
 	if (r)
 		goto fail_clean_notifier;
 
-	r = devm_request_irq(&pci_dev->dev, pci_dev->irq, cio2_irq,
-			     IRQF_SHARED, CIO2_NAME, cio2);
+	r = devm_request_irq(dev, pci_dev->irq, cio2_irq, IRQF_SHARED,
+			     CIO2_NAME, cio2);
 	if (r) {
-		dev_err(&pci_dev->dev, "failed to request IRQ (%d)\n", r);
+		dev_err(dev, "failed to request IRQ (%d)\n", r);
 		goto fail_clean_notifier;
 	}
 
-	pm_runtime_put_noidle(&pci_dev->dev);
-	pm_runtime_allow(&pci_dev->dev);
+	pm_runtime_put_noidle(dev);
+	pm_runtime_allow(dev);
 
 	return 0;
 
@@ -2003,10 +2000,9 @@ static int __maybe_unused cio2_resume(struct device *dev)
 	if (!cio2->streaming)
 		return 0;
 	/* Start stream */
-	r = pm_runtime_force_resume(&cio2->pci_dev->dev);
+	r = pm_runtime_force_resume(dev);
 	if (r < 0) {
-		dev_err(&cio2->pci_dev->dev,
-			"failed to set power %d\n", r);
+		dev_err(dev, "failed to set power %d\n", r);
 		return r;
 	}
 
-- 
2.30.2

[PATCH v1 3/6] media: ipu3-cio2: Switch to use media_entity_to_video_device()

[Andy Shevchenko]

V4L2 provides a few helper macros, in particular
media_entity_to_video_device(). Switch the driver
to use it instead of open-coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index d3358817db6f..2f8ded58a949 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -1313,15 +1313,15 @@ static int cio2_subdev_link_validate_get_format(struct media_pad *pad,
 
 static int cio2_video_link_validate(struct media_link *link)
 {
-	struct video_device *vd = container_of(link->sink->entity,
-						struct video_device, entity);
+	struct media_entity *entity = link->sink->entity;
+	struct video_device *vd = media_entity_to_video_device(entity);
 	struct cio2_queue *q = container_of(vd, struct cio2_queue, vdev);
 	struct cio2_device *cio2 = video_get_drvdata(vd);
 	struct device *dev = &cio2->pci_dev->dev;
 	struct v4l2_subdev_format source_fmt;
 	int ret;
 
-	if (!media_entity_remote_pad(link->sink->entity->pads)) {
+	if (!media_entity_remote_pad(entity->pads)) {
 		dev_info(dev, "video node %s pad not connected\n", vd->name);
 		return -ENOTCONN;
 	}
-- 
2.30.2

[PATCH v1 4/6] media: ipu3-cio2: Introduce to_sensor_asd() helper macro

[Andy Shevchenko]

Provide to_sensor_asd() helper macro and convert users to make
code easier to read.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index 2f8ded58a949..8abb34f47b7b 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -1372,6 +1372,8 @@ struct sensor_async_subdev {
 	struct csi2_bus_info csi2;
 };
 
+#define to_sensor_asd(asd)	container_of(asd, struct sensor_async_subdev, asd)
+
 /* The .bound() notifier callback when a match is found */
 static int cio2_notifier_bound(struct v4l2_async_notifier *notifier,
 			       struct v4l2_subdev *sd,
@@ -1379,8 +1381,7 @@ static int cio2_notifier_bound(struct v4l2_async_notifier *notifier,
 {
 	struct cio2_device *cio2 = container_of(notifier,
 					struct cio2_device, notifier);
-	struct sensor_async_subdev *s_asd = container_of(asd,
-					struct sensor_async_subdev, asd);
+	struct sensor_async_subdev *s_asd = to_sensor_asd(asd);
 	struct cio2_queue *q;
 
 	if (cio2->queue[s_asd->csi2.port].sensor)
@@ -1402,8 +1403,7 @@ static void cio2_notifier_unbind(struct v4l2_async_notifier *notifier,
 {
 	struct cio2_device *cio2 = container_of(notifier,
 						struct cio2_device, notifier);
-	struct sensor_async_subdev *s_asd = container_of(asd,
-					struct sensor_async_subdev, asd);
+	struct sensor_async_subdev *s_asd = to_sensor_asd(asd);
 
 	cio2->queue[s_asd->csi2.port].sensor = NULL;
 }
@@ -1421,7 +1421,7 @@ static int cio2_notifier_complete(struct v4l2_async_notifier *notifier)
 	int ret;
 
 	list_for_each_entry(asd, &cio2->notifier.asd_list, asd_list) {
-		s_asd = container_of(asd, struct sensor_async_subdev, asd);
+		s_asd = to_sensor_asd(asd);
 		q = &cio2->queue[s_asd->csi2.port];
 
 		for (pad = 0; pad < q->sensor->entity.num_pads; pad++)
-- 
2.30.2

[PATCH v1 5/6] media: ipu3-cio2: Introduce to_cio2_buffer() helper macro

[Andy Shevchenko]

Provide to_cio2_buffer() helper macro and convert users to make
code easier to read.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 9 +++------
 drivers/media/pci/intel/ipu3/ipu3-cio2.h      | 2 ++
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index 8abb34f47b7b..3acee7a623c0 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -823,8 +823,7 @@ static int cio2_vb2_buf_init(struct vb2_buffer *vb)
 {
 	struct cio2_device *cio2 = vb2_get_drv_priv(vb->vb2_queue);
 	struct device *dev = &cio2->pci_dev->dev;
-	struct cio2_buffer *b =
-		container_of(vb, struct cio2_buffer, vbb.vb2_buf);
+	struct cio2_buffer *b = to_cio2_buffer(vb);
 	unsigned int pages = PFN_UP(vb->planes[0].length);
 	unsigned int lops = DIV_ROUND_UP(pages + 1, CIO2_LOP_ENTRIES);
 	struct sg_table *sg;
@@ -881,8 +880,7 @@ static void cio2_vb2_buf_queue(struct vb2_buffer *vb)
 	struct device *dev = &cio2->pci_dev->dev;
 	struct cio2_queue *q =
 		container_of(vb->vb2_queue, struct cio2_queue, vbq);
-	struct cio2_buffer *b =
-		container_of(vb, struct cio2_buffer, vbb.vb2_buf);
+	struct cio2_buffer *b = to_cio2_buffer(vb);
 	struct cio2_fbpt_entry *entry;
 	unsigned long flags;
 	unsigned int i, j, next = q->bufs_next;
@@ -955,8 +953,7 @@ static void cio2_vb2_buf_cleanup(struct vb2_buffer *vb)
 {
 	struct cio2_device *cio2 = vb2_get_drv_priv(vb->vb2_queue);
 	struct device *dev = &cio2->pci_dev->dev;
-	struct cio2_buffer *b =
-		container_of(vb, struct cio2_buffer, vbb.vb2_buf);
+	struct cio2_buffer *b = to_cio2_buffer(vb);
 	unsigned int i;
 
 	/* Free LOP table */
diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.h b/drivers/media/pci/intel/ipu3/ipu3-cio2.h
index 3806d7f04d69..f82f9b2590b9 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2.h
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.h
@@ -338,6 +338,8 @@ struct cio2_buffer {
 	unsigned int offset;
 };
 
+#define to_cio2_buffer(vb)	container_of(vb, struct cio2_buffer, vbb.vb2_buf)
+
 struct csi2_bus_info {
 	u32 port;
 	u32 lanes;
-- 
2.30.2

[PATCH v1 6/6] media: ipu3-cio2: Introduce to_cio2_device() helper macro

[Andy Shevchenko]

Provide to_cio2_device() helper macro and convert users to make
code easier to read.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 9 +++------
 drivers/media/pci/intel/ipu3/ipu3-cio2.h      | 2 ++
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index 3acee7a623c0..88d6dd7d864e 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -1376,8 +1376,7 @@ static int cio2_notifier_bound(struct v4l2_async_notifier *notifier,
 			       struct v4l2_subdev *sd,
 			       struct v4l2_async_subdev *asd)
 {
-	struct cio2_device *cio2 = container_of(notifier,
-					struct cio2_device, notifier);
+	struct cio2_device *cio2 = to_cio2_device(notifier);
 	struct sensor_async_subdev *s_asd = to_sensor_asd(asd);
 	struct cio2_queue *q;
 
@@ -1398,8 +1397,7 @@ static void cio2_notifier_unbind(struct v4l2_async_notifier *notifier,
 				 struct v4l2_subdev *sd,
 				 struct v4l2_async_subdev *asd)
 {
-	struct cio2_device *cio2 = container_of(notifier,
-						struct cio2_device, notifier);
+	struct cio2_device *cio2 = to_cio2_device(notifier);
 	struct sensor_async_subdev *s_asd = to_sensor_asd(asd);
 
 	cio2->queue[s_asd->csi2.port].sensor = NULL;
@@ -1408,8 +1406,7 @@ static void cio2_notifier_unbind(struct v4l2_async_notifier *notifier,
 /* .complete() is called after all subdevices have been located */
 static int cio2_notifier_complete(struct v4l2_async_notifier *notifier)
 {
-	struct cio2_device *cio2 = container_of(notifier, struct cio2_device,
-						notifier);
+	struct cio2_device *cio2 = to_cio2_device(notifier);
 	struct device *dev = &cio2->pci_dev->dev;
 	struct sensor_async_subdev *s_asd;
 	struct v4l2_async_subdev *asd;
diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.h b/drivers/media/pci/intel/ipu3/ipu3-cio2.h
index f82f9b2590b9..3a1f394e05aa 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2.h
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.h
@@ -401,6 +401,8 @@ struct cio2_device {
 	dma_addr_t dummy_lop_bus_addr;
 };
 
+#define to_cio2_device(n)	container_of(n, struct cio2_device, notifier)
+
 /**************** Virtual channel ****************/
 /*
  * This should come from sensor driver. No
-- 
2.30.2

Re: [PATCH v1 1/6] media: ipu3-cio2: Replace open-coded for_each_set_bit()

[Andy Shevchenko]

On Tue, Jul 13, 2021 at 11:21:26PM +0300, Andy Shevchenko wrote:
> Use for_each_set_bit() instead of open-coding it to simplify the code.

Any comments on the series?

-- 
With Best Regards,
Andy Shevchenko