openwrt/target/linux/bcm27xx/patches-5.10/950-0541-rpivid-Switch-to-new-clock-api.patch

From 4ffdf70996826a87fceb78f2399c98e8a4c6aa89 Mon Sep 17 00:00:00 2001
From: Dom Cobley <popcornmix@gmail.com>
Date: Mon, 19 Apr 2021 19:30:26 +0100
Subject: [PATCH] rpivid: Switch to new clock api

Signed-off-by: Dom Cobley <popcornmix@gmail.com>
---
 drivers/staging/media/rpivid/rpivid.h       |  1 +
 drivers/staging/media/rpivid/rpivid_video.c | 11 +++--------
 2 files changed, 4 insertions(+), 8 deletions(-)

--- a/drivers/staging/media/rpivid/rpivid.h
+++ b/drivers/staging/media/rpivid/rpivid.h
@@ -172,6 +172,7 @@ struct rpivid_dev {
 	void __iomem		*base_h265;
 
 	struct clk		*clock;
+	struct clk_request      *hevc_req;
 
 	struct rpivid_hw_irq_ctrl ic_active1;
 	struct rpivid_hw_irq_ctrl ic_active2;
--- a/drivers/staging/media/rpivid/rpivid_video.c
+++ b/drivers/staging/media/rpivid/rpivid_video.c
@@ -499,8 +499,8 @@ static int rpivid_start_streaming(struct
 	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->start)
 		ret = dev->dec_ops->start(ctx);
 
-	ret = clk_set_rate(dev->clock, max_hevc_clock);
-	if (ret) {
+	dev->hevc_req = clk_request_start(dev->clock, max_hevc_clock);
+	if (!dev->hevc_req) {
 		dev_err(dev->dev, "Failed to set clock rate\n");
 		goto out;
 	}
@@ -520,18 +520,13 @@ static void rpivid_stop_streaming(struct
 {
 	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
 	struct rpivid_dev *dev = ctx->dev;
-	long min_hevc_clock = clk_round_rate(dev->clock, 0);
-	int ret;
 
 	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->stop)
 		dev->dec_ops->stop(ctx);
 
 	rpivid_queue_cleanup(vq, VB2_BUF_STATE_ERROR);
 
-	ret = clk_set_rate(dev->clock, min_hevc_clock);
-	if (ret)
-		dev_err(dev->dev, "Failed to set minimum clock rate\n");
-
+	clk_request_done(dev->hevc_req);
 	clk_disable_unprepare(dev->clock);
 }