diff options
Diffstat (limited to 'meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0101-LVDS-ar0132-use-context-swwitch.patch')
| -rw-r--r-- | meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0101-LVDS-ar0132-use-context-swwitch.patch | 119 |
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 + |