Initial commit for ADAS boards support in 2.23.0

1 files changed, 119 insertions, 0 deletions

diff --git a/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0101-LVDS-ar0132-use-context-swwitch.patch b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0101-LVDS-ar0132-use-context-swwitch.patch
new file mode 100644
index 0000000..00b62e8
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0101-LVDS-ar0132-use-context-swwitch.patch
@@ -0,0 +1,119 @@
+From d9b811e183d9cae753929cb55e627a29c6a971a8 Mon Sep 17 00:00:00 2001
+From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
+Date: Wed, 30 Aug 2017 14:44:29 +0300
+Subject: [PATCH] LVDS: ar0132 use context swwitch
+
+This enabled context-A-B switch on every frame
+
+Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
+---
+ drivers/media/i2c/soc_camera/ar0132.c        | 19 +++++++++++++++++++
+ drivers/media/platform/soc_camera/rcar_vin.c | 23 ++++++++++++++++++-----
+ 2 files changed, 37 insertions(+), 5 deletions(-)
+
+diff --git a/drivers/media/i2c/soc_camera/ar0132.c b/drivers/media/i2c/soc_camera/ar0132.c
+index 284c522..2c21fa9 100644
+--- a/drivers/media/i2c/soc_camera/ar0132.c
++++ b/drivers/media/i2c/soc_camera/ar0132.c
+@@ -238,11 +238,30 @@ static int ar0132_s_register(struct v4l2_subdev *sd,
+ }
+ #endif
+ 
++static int ar0132_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++#if 1
++	u16 frame_count = 0;
++	/* read frame counter from sensor */
++	reg16_read16(client, 0x303a, &frame_count);
++#else
++	static int frame_count = 0;
++	/* get cached frame counter */
++	frame_count++;
++#endif
++	/* odd frame -> Mode A, even frame -> Mode B */
++	reg16_write16(client, 0x30b0, frame_count & 1 ? 0x2 : 0x2002);
++
++	return 0;
++};
++
+ static struct v4l2_subdev_core_ops ar0132_core_ops = {
+ #ifdef CONFIG_VIDEO_ADV_DEBUG
+ 	.g_register = ar0132_g_register,
+ 	.s_register = ar0132_s_register,
+ #endif
++	.interrupt_service_routine = ar0132_isr,
+ };
+ 
+ static int ar0132_s_ctrl(struct v4l2_ctrl *ctrl)
+diff --git a/drivers/media/platform/soc_camera/rcar_vin.c b/drivers/media/platform/soc_camera/rcar_vin.c
+index c39fe63..9ab6f00 100644
+--- a/drivers/media/platform/soc_camera/rcar_vin.c
++++ b/drivers/media/platform/soc_camera/rcar_vin.c
+@@ -1292,13 +1292,24 @@ static void rcar_vin_stop_streaming(struct vb2_queue *vq)
+ 	.wait_finish	= vb2_ops_wait_finish,
+ };
+ 
++static irqreturn_t rcar_vin_threaded_irq(int irq, void *data)
++{
++	struct rcar_vin_priv *priv = data;
++	struct soc_camera_device *icd = priv->ici.icd;
++	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
++
++	v4l2_subdev_call(sd, core, interrupt_service_routine, 0, NULL);
++
++	return IRQ_HANDLED;
++};
++
+ static irqreturn_t rcar_vin_irq(int irq, void *data)
+ {
+ 	struct rcar_vin_priv *priv = data;
+ 	u32 int_status;
+ 	bool can_run = false, hw_stopped;
+ 	int slot;
+-	unsigned int handled = 0;
++	unsigned int handled = IRQ_NONE;
+ 	int vin_ovr_cnt = 0;
+ 
+ 	spin_lock(&priv->lock);
+@@ -1309,7 +1320,7 @@ static irqreturn_t rcar_vin_irq(int irq, void *data)
+ 
+ 	/* ack interrupts */
+ 	iowrite32(int_status, priv->base + VNINTS_REG);
+-	handled = 1;
++	handled = IRQ_HANDLED;
+ 
+ 	/* overflow occurs */
+ 	if (vin_debug && (int_status & VNINTS_FOS)) {
+@@ -1342,6 +1353,8 @@ static irqreturn_t rcar_vin_irq(int irq, void *data)
+ 			priv->queue_buf[slot] = NULL;
+ 
+ 			can_run = rcar_vin_fill_hw_slot(priv);
++
++			handled = IRQ_WAKE_THREAD;
+ 		}
+ 
+ 		if (is_continuous_transfer(priv)) {
+@@ -1370,7 +1383,7 @@ static irqreturn_t rcar_vin_irq(int irq, void *data)
+ done:
+ 	spin_unlock(&priv->lock);
+ 
+-	return IRQ_RETVAL(handled);
++	return handled;
+ }
+ 
+ static struct v4l2_subdev *find_csi2(struct rcar_vin_priv *pcdev)
+@@ -2930,8 +2943,8 @@ static int rcar_vin_probe(struct platform_device *pdev)
+ 	if (IS_ERR(priv->base))
+ 		return PTR_ERR(priv->base);
+ 
+-	ret = devm_request_irq(&pdev->dev, irq, rcar_vin_irq, IRQF_SHARED,
+-			       dev_name(&pdev->dev), priv);
++	ret = devm_request_threaded_irq(&pdev->dev, irq, rcar_vin_irq, rcar_vin_threaded_irq,
++					IRQF_SHARED, dev_name(&pdev->dev), priv);
+ 	if (ret)
+ 		return ret;
+ 
+-- 
+1.9.1
+