From: Sunyoung Kang <sy0816.kang@samsung.com>
Date: Fri, 27 Apr 2018 06:01:18 +0000 (+0900)
Subject: media: mfc: support the s5p_mfc_poll() ioctl
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=620537320d9eac19b070a780797aeb6478b135c2;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

media: mfc: support the s5p_mfc_poll() ioctl

To use poll() ioctl, wait POLLOUT event for source
and POLLIN event for destination.

Change-Id: I35f8f31dd47408ee2d8b720a020fc4a66754986a
Signed-off-by: Sunyoung Kang <sy0816.kang@samsung.com>
---

diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc.c b/drivers/media/platform/exynos/mfc/s5p_mfc.c
index 705ac511f272..c8449388720a 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc.c
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc.c
@@ -19,6 +19,7 @@
 #include <linux/smc.h>
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
+#include <linux/poll.h>
 
 #include "s5p_mfc_common.h"
 
@@ -811,16 +812,20 @@ static unsigned int s5p_mfc_poll(struct file *file,
 				 struct poll_table_struct *wait)
 {
 	struct s5p_mfc_ctx *ctx = fh_to_mfc_ctx(file->private_data);
+	unsigned long req_events = poll_requested_events(wait);
 	unsigned int ret = 0;
-	enum s5p_mfc_node_type node_type;
 
-	node_type = s5p_mfc_get_node_type(file);
+	mfc_debug_enter();
 
-	if (s5p_mfc_is_decoder_node(node_type))
+	if (req_events & (POLLOUT | POLLWRNORM)) {
+		mfc_debug(2, "wait source buffer\n");
 		ret = vb2_poll(&ctx->vq_src, file, wait);
-	else
+	} else if (req_events & (POLLIN | POLLRDNORM)) {
+		mfc_debug(2, "wait destination buffer\n");
 		ret = vb2_poll(&ctx->vq_dst, file, wait);
+	}
 
+	mfc_debug_leave();
 	return ret;
 }