Merge tag 'media/v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - remove sensor drivers that got converted from soc_camera

 - remaining soc_camera drivers got moved to staging

 - some documentation cleanups and improvements

 - the imx staging driver now supports imx7

 - the ov9640, mt9m001 and mt9m111 got converted from soc_camera

 - the vim2m driver now does what a m2m convert driver expects to do

 - epoll() fixes on media subsystems

 - several drivers fixes, typos, cleanups and improvements

* tag 'media/v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (346 commits)
  media: dvb/earth-pt1: fix wrong initialization for demod blocks
  media: vim2m: Address some coding style issues
  media: vim2m: don't use BUG()
  media: vim2m: speedup passthrough copy
  media: vim2m: add an horizontal scaler
  media: vim2m: don't accept YUYV anymore as output format
  media: vim2m: add vertical linear scaler
  media: vim2m: better handle cap/out buffers with different sizes
  media: vim2m: use different framesizes for bayer formats
  media: vim2m: add support for VIDIOC_ENUM_FRAMESIZES
  media: vim2m: ensure that width is multiple of two
  media: vim2m: improve debug messages
  media: vim2m: add bayer capture formats
  media: a few more typos at staging, pci, platform, radio and usb
  media: Documentation: fix several typos
  media: staging: fix several typos
  media: include: fix several typos
  media: common: fix several typos
  media: v4l2-core: fix several typos
  media: usb: fix several typos
  ...

2 files changed, 109 insertions, 43 deletions

diff --git a/drivers/gpu/ipu-v3/ipu-cpmem.c b/drivers/gpu/ipu-v3/ipu-cpmem.c
index 163fadb8a33a..d047a6867c59 100644
--- a/drivers/gpu/ipu-v3/ipu-cpmem.c
+++ b/drivers/gpu/ipu-v3/ipu-cpmem.c
@@ -277,9 +277,10 @@ void ipu_cpmem_set_uv_offset(struct ipuv3_channel *ch, u32 u_off, u32 v_off)
 }
 EXPORT_SYMBOL_GPL(ipu_cpmem_set_uv_offset);
 
-void ipu_cpmem_interlaced_scan(struct ipuv3_channel *ch, int stride)
+void ipu_cpmem_interlaced_scan(struct ipuv3_channel *ch, int stride,
+			       u32 pixelformat)
 {
-	u32 ilo, sly;
+	u32 ilo, sly, sluv;
 
 	if (stride < 0) {
 		stride = -stride;
@@ -290,9 +291,30 @@ void ipu_cpmem_interlaced_scan(struct ipuv3_channel *ch, int stride)
 
 	sly = (stride * 2) - 1;
 
+	switch (pixelformat) {
+	case V4L2_PIX_FMT_YUV420:
+	case V4L2_PIX_FMT_YVU420:
+		sluv = stride / 2 - 1;
+		break;
+	case V4L2_PIX_FMT_NV12:
+		sluv = stride - 1;
+		break;
+	case V4L2_PIX_FMT_YUV422P:
+		sluv = stride - 1;
+		break;
+	case V4L2_PIX_FMT_NV16:
+		sluv = stride * 2 - 1;
+		break;
+	default:
+		sluv = 0;
+		break;
+	}
+
 	ipu_ch_param_write_field(ch, IPU_FIELD_SO, 1);
 	ipu_ch_param_write_field(ch, IPU_FIELD_ILO, ilo);
 	ipu_ch_param_write_field(ch, IPU_FIELD_SLY, sly);
+	if (sluv)
+		ipu_ch_param_write_field(ch, IPU_FIELD_SLUV, sluv);
 };
 EXPORT_SYMBOL_GPL(ipu_cpmem_interlaced_scan);
 
diff --git a/drivers/gpu/ipu-v3/ipu-csi.c b/drivers/gpu/ipu-v3/ipu-csi.c
index aa0e30a2ba18..d1e575571a8d 100644
--- a/drivers/gpu/ipu-v3/ipu-csi.c
+++ b/drivers/gpu/ipu-v3/ipu-csi.c
@@ -325,12 +325,21 @@ static int mbus_code_to_bus_cfg(struct ipu_csi_bus_config *cfg, u32 mbus_code,
 	return 0;
 }
 
+/* translate alternate field mode based on given standard */
+static inline enum v4l2_field
+ipu_csi_translate_field(enum v4l2_field field, v4l2_std_id std)
+{
+	return (field != V4L2_FIELD_ALTERNATE) ? field :
+		((std & V4L2_STD_525_60) ?
+		 V4L2_FIELD_SEQ_BT : V4L2_FIELD_SEQ_TB);
+}
+
 /*
  * Fill a CSI bus config struct from mbus_config and mbus_framefmt.
  */
 static int fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
-				 struct v4l2_mbus_config *mbus_cfg,
-				 struct v4l2_mbus_framefmt *mbus_fmt)
+			    const struct v4l2_mbus_config *mbus_cfg,
+			    const struct v4l2_mbus_framefmt *mbus_fmt)
 {
 	int ret;
 
@@ -374,22 +383,76 @@ static int fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
 	return 0;
 }
 
+static int
+ipu_csi_set_bt_interlaced_codes(struct ipu_csi *csi,
+				const struct v4l2_mbus_framefmt *infmt,
+				const struct v4l2_mbus_framefmt *outfmt,
+				v4l2_std_id std)
+{
+	enum v4l2_field infield, outfield;
+	bool swap_fields;
+
+	/* get translated field type of input and output */
+	infield = ipu_csi_translate_field(infmt->field, std);
+	outfield = ipu_csi_translate_field(outfmt->field, std);
+
+	/*
+	 * Write the H-V-F codes the CSI will match against the
+	 * incoming data for start/end of active and blanking
+	 * field intervals. If input and output field types are
+	 * sequential but not the same (one is SEQ_BT and the other
+	 * is SEQ_TB), swap the F-bit so that the CSI will capture
+	 * field 1 lines before field 0 lines.
+	 */
+	swap_fields = (V4L2_FIELD_IS_SEQUENTIAL(infield) &&
+		       V4L2_FIELD_IS_SEQUENTIAL(outfield) &&
+		       infield != outfield);
+
+	if (!swap_fields) {
+		/*
+		 * Field0BlankEnd  = 110, Field0BlankStart  = 010
+		 * Field0ActiveEnd = 100, Field0ActiveStart = 000
+		 * Field1BlankEnd  = 111, Field1BlankStart  = 011
+		 * Field1ActiveEnd = 101, Field1ActiveStart = 001
+		 */
+		ipu_csi_write(csi, 0x40596 | CSI_CCIR_ERR_DET_EN,
+			      CSI_CCIR_CODE_1);
+		ipu_csi_write(csi, 0xD07DF, CSI_CCIR_CODE_2);
+	} else {
+		dev_dbg(csi->ipu->dev, "capture field swap\n");
+
+		/* same as above but with F-bit inverted */
+		ipu_csi_write(csi, 0xD07DF | CSI_CCIR_ERR_DET_EN,
+			      CSI_CCIR_CODE_1);
+		ipu_csi_write(csi, 0x40596, CSI_CCIR_CODE_2);
+	}
+
+	ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
+
+	return 0;
+}
+
+
 int ipu_csi_init_interface(struct ipu_csi *csi,
-			   struct v4l2_mbus_config *mbus_cfg,
-			   struct v4l2_mbus_framefmt *mbus_fmt)
+			   const struct v4l2_mbus_config *mbus_cfg,
+			   const struct v4l2_mbus_framefmt *infmt,
+			   const struct v4l2_mbus_framefmt *outfmt)
 {
 	struct ipu_csi_bus_config cfg;
 	unsigned long flags;
 	u32 width, height, data = 0;
+	v4l2_std_id std;
 	int ret;
 
-	ret = fill_csi_bus_cfg(&cfg, mbus_cfg, mbus_fmt);
+	ret = fill_csi_bus_cfg(&cfg, mbus_cfg, infmt);
 	if (ret < 0)
 		return ret;
 
 	/* set default sensor frame width and height */
-	width = mbus_fmt->width;
-	height = mbus_fmt->height;
+	width = infmt->width;
+	height = infmt->height;
+	if (infmt->field == V4L2_FIELD_ALTERNATE)
+		height *= 2;
 
 	/* Set the CSI_SENS_CONF register remaining fields */
 	data |= cfg.data_width << CSI_SENS_CONF_DATA_WIDTH_SHIFT |
@@ -416,42 +479,22 @@ int ipu_csi_init_interface(struct ipu_csi *csi,
 		ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
 		break;
 	case IPU_CSI_CLK_MODE_CCIR656_INTERLACED:
-		if (mbus_fmt->width == 720 && mbus_fmt->height == 576) {
-			/*
-			 * PAL case
-			 *
-			 * Field0BlankEnd = 0x6, Field0BlankStart = 0x2,
-			 * Field0ActiveEnd = 0x4, Field0ActiveStart = 0
-			 * Field1BlankEnd = 0x7, Field1BlankStart = 0x3,
-			 * Field1ActiveEnd = 0x5, Field1ActiveStart = 0x1
-			 */
-			height = 625; /* framelines for PAL */
-
-			ipu_csi_write(csi, 0x40596 | CSI_CCIR_ERR_DET_EN,
-					  CSI_CCIR_CODE_1);
-			ipu_csi_write(csi, 0xD07DF, CSI_CCIR_CODE_2);
-			ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
-		} else if (mbus_fmt->width == 720 && mbus_fmt->height == 480) {
-			/*
-			 * NTSC case
-			 *
-			 * Field0BlankEnd = 0x7, Field0BlankStart = 0x3,
-			 * Field0ActiveEnd = 0x5, Field0ActiveStart = 0x1
-			 * Field1BlankEnd = 0x6, Field1BlankStart = 0x2,
-			 * Field1ActiveEnd = 0x4, Field1ActiveStart = 0
-			 */
-			height = 525; /* framelines for NTSC */
-
-			ipu_csi_write(csi, 0xD07DF | CSI_CCIR_ERR_DET_EN,
-					  CSI_CCIR_CODE_1);
-			ipu_csi_write(csi, 0x40596, CSI_CCIR_CODE_2);
-			ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
+		if (width == 720 && height == 480) {
+			std = V4L2_STD_NTSC;
+			height = 525;
+		} else if (width == 720 && height == 576) {
+			std = V4L2_STD_PAL;
+			height = 625;
 		} else {
 			dev_err(csi->ipu->dev,
-				"Unsupported CCIR656 interlaced video mode\n");
-			spin_unlock_irqrestore(&csi->lock, flags);
-			return -EINVAL;
+				"Unsupported interlaced video mode\n");
+			ret = -EINVAL;
+			goto out_unlock;
 		}
+
+		ret = ipu_csi_set_bt_interlaced_codes(csi, infmt, outfmt, std);
+		if (ret)
+			goto out_unlock;
 		break;
 	case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR:
 	case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR:
@@ -476,9 +519,10 @@ int ipu_csi_init_interface(struct ipu_csi *csi,
 	dev_dbg(csi->ipu->dev, "CSI_ACT_FRM_SIZE = 0x%08X\n",
 		ipu_csi_read(csi, CSI_ACT_FRM_SIZE));
 
+out_unlock:
 	spin_unlock_irqrestore(&csi->lock, flags);
 
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(ipu_csi_init_interface);