From 18f87aa6b8b4e480cdf95d5c9a0baddc22bfee67 Mon Sep 17 00:00:00 2001
From: Hu Kejun <william.hu@rock-chips.com>
Date: Thu, 31 May 2018 16:46:24 +0800
Subject: [PATCH] media: rk-isp10: add module parameter for dumpsys

Change-Id: I7ab56cbdcc5a0ce1441c972a1daa044593e6eb9f
Signed-off-by: Hu Kejun <william.hu@rock-chips.com>
---
 .../media/platform/rk-isp10/cif_isp10_v4l2.c  | 48 ++++++++++++-------
 1 file changed, 32 insertions(+), 16 deletions(-)

diff --git a/drivers/media/platform/rk-isp10/cif_isp10_v4l2.c b/drivers/media/platform/rk-isp10/cif_isp10_v4l2.c
index 0ccfb0a9508c..ae04c07e10b5 100644
--- a/drivers/media/platform/rk-isp10/cif_isp10_v4l2.c
+++ b/drivers/media/platform/rk-isp10/cif_isp10_v4l2.c
@@ -1088,14 +1088,26 @@ static int cif_isp10_v4l2_release(struct file *file)
 	return ret;
 }
 
-static unsigned int __maybe_unused cif_isp10_v4l2_poll(
+static bool cifisp10_meta_mmap;
+module_param_named(meta_mmap, cifisp10_meta_mmap, bool, 0644);
+MODULE_PARM_DESC(meta_mmap, "Meta mmap onoff (N-Y)");
+
+static unsigned int cif_isp10_v4l2_poll(
 	struct file *file,
 	struct poll_table_struct *wait)
 {
-	struct cif_isp10_v4l2_fh *fh = to_fh(file);
-	int ret = 0;
-	struct vb2_queue *queue = to_vb2_queue(file);
-	unsigned long req_events = poll_requested_events(wait);
+	struct cif_isp10_v4l2_fh *fh;
+	int ret;
+	struct vb2_queue *queue;
+	unsigned long req_events;
+
+	if (!cifisp10_meta_mmap)
+		return vb2_fop_poll(file, wait);
+
+	ret = 0;
+	fh = to_fh(file);
+	queue = to_vb2_queue(file);
+	req_events = poll_requested_events(wait);
 
 	cif_isp10_pltfrm_pr_dbg(NULL, "%s\n",
 		cif_isp10_v4l2_buf_type_string(queue->type));
@@ -1119,7 +1131,7 @@ static unsigned int __maybe_unused cif_isp10_v4l2_poll(
 /*
  * VMA operations.
  */
-static void __maybe_unused cif_isp10_v4l2_vm_open(struct vm_area_struct *vma)
+static void cif_isp10_v4l2_vm_open(struct vm_area_struct *vma)
 {
 	struct cif_isp10_metadata_s *metadata =
 		(struct cif_isp10_metadata_s *)vma->vm_private_data;
@@ -1127,7 +1139,7 @@ static void __maybe_unused cif_isp10_v4l2_vm_open(struct vm_area_struct *vma)
 	metadata->vmas++;
 }
 
-static void __maybe_unused cif_isp10_v4l2_vm_close(struct vm_area_struct *vma)
+static void cif_isp10_v4l2_vm_close(struct vm_area_struct *vma)
 {
 	struct cif_isp10_metadata_s *metadata =
 		(struct cif_isp10_metadata_s *)vma->vm_private_data;
@@ -1135,18 +1147,24 @@ static void __maybe_unused cif_isp10_v4l2_vm_close(struct vm_area_struct *vma)
 	metadata->vmas--;
 }
 
-static const struct __maybe_unused vm_operations_struct cif_isp10_vm_ops = {
+static const struct vm_operations_struct cif_isp10_vm_ops = {
 	.open		= cif_isp10_v4l2_vm_open,
 	.close		= cif_isp10_v4l2_vm_close,
 };
 
-int __maybe_unused cif_isp10_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
+int cif_isp10_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
 {
-	struct vb2_queue *queue = to_vb2_queue(file);
-	struct cif_isp10_device *dev = to_cif_isp10_device(queue);
-	enum cif_isp10_stream_id strm = to_stream_id(file);
+	struct vb2_queue *queue;
+	struct cif_isp10_device *dev;
+	enum cif_isp10_stream_id strm;
 	int retval;
 
+	if (!cifisp10_meta_mmap)
+		return vb2_fop_mmap(file, vma);
+
+	queue = to_vb2_queue(file);
+	dev = to_cif_isp10_device(queue);
+	strm = to_stream_id(file);
 	retval = cif_isp10_mmap(dev, strm, vma);
 	if (retval < 0)
 		goto done;
@@ -1166,10 +1184,8 @@ const struct v4l2_file_operations cif_isp10_v4l2_fops = {
 	.compat_ioctl32 = video_ioctl2,
 #endif
 	.release = cif_isp10_v4l2_release,
-	//.poll = cif_isp10_v4l2_poll,
-	//.mmap = cif_isp10_v4l2_mmap,
-	.poll = vb2_fop_poll,
-	.mmap = vb2_fop_mmap,
+	.poll = cif_isp10_v4l2_poll,
+	.mmap = cif_isp10_v4l2_mmap,
 };
 
 /*TBD: clean up code below this line******************************************/