问题描述

由前一篇文章https://blog.csdn.net/jay547063443/article/details/142059700?fromshare=blogdetail&sharetype=blogdetail&sharerId=142059700&sharerefer=PC&sharesource=jay547063443&sharefrom=from_link，移植HDMI-IN部分驱动后出现：
1.HDMI-IN图形延迟 出图慢 rkCamera2应用自动跳出等问题
2.HDMIN-IN无声

解决方案：

问题一：
kernel\drivers\media\i2c\rk628\rk628_hdmirx.c

int rk628_is_avi_ready(struct rk628 *rk628, bool avi_rcv_rdy)
{
	u8 i;
	u32 val, avi_pb = 0;
	u8 cnt = 0, max_cnt = 2;
	u32 hdcp_ctrl_val = 0;

	if (rk628->version >= RK628F_VERSION)
		return 1;
+
+	if (rk628->version >= RK628D_VERSION)
+		return 1;
+
	rk628_i2c_read(rk628, HDMI_RX_HDCP_CTRL, &val);
	if ((val & HDCP_ENABLE_MASK))
		max_cnt = 5;

问题二：
首先确保上层hardware\rockchip\audio\tinyalsa_hal\audio_hw.c声卡有添加，以我的声卡为例子

其次这里不要修改为rk628,还是用原来的hdmirx

最后添加如下kernelq驱动部分补丁：

From b027f3089f3a84198788363540dcaae52949c4a2 Mon Sep 17 00:00:00 2001
From: Shunhua Lan <lsh@rock-chips.com>
Date: Fri, 27 Sep 2024 16:47:41 +0800
Subject: [PATCH] media: i2c: rk628: repair cts n interrupt loss

Change-Id: I9603a1733555b535f0542ca6677e9cb27647a399
Signed-off-by: Shunhua Lan <lsh@rock-chips.com>
---

diff --git a/drivers/media/i2c/rk628/rk628_csi_v4l2.c b/drivers/media/i2c/rk628/rk628_csi_v4l2.c
index 86f35b7..bb91f0c 100644
--- a/drivers/media/i2c/rk628/rk628_csi_v4l2.c
+++ b/drivers/media/i2c/rk628/rk628_csi_v4l2.c
@@ -1567,6 +1567,24 @@
 		return -EINVAL;
 	}
 
+	if (csi->rk628->version < RK628F_VERSION) {
+		if (rk628_audio_ctsnints_enabled(audio_info)) {
+			rk628_i2c_read(csi->rk628, HDMI_RX_PDEC_ISTS, &pdec_ints);
+			if (pdec_ints & (ACR_N_CHG_ICLR | ACR_CTS_CHG_ICLR)) {
+				rk628_csi_isr_ctsn(audio_info, pdec_ints);
+				pdec_ints &= ~(ACR_CTS_CHG_ICLR | ACR_CTS_CHG_ICLR);
+				*handled = true;
+			}
+		}
+		if (rk628_audio_fifoints_enabled(audio_info)) {
+			rk628_i2c_read(csi->rk628, HDMI_RX_AUD_FIFO_ISTS, &fifo_ints);
+			if (fifo_ints & 0x18) {
+				rk628_csi_isr_fifoints(audio_info, fifo_ints);
+				*handled = true;
+			}
+		}
+	}
+
 	if (!csi->vid_ints_en)
 		return 0;
 
@@ -1579,7 +1597,7 @@
 
 	/* clear interrupts */
 	rk628_i2c_write(csi->rk628, HDMI_RX_MD_ICLR, 0xffffffff);
-	rk628_i2c_write(csi->rk628, HDMI_RX_PDEC_ICLR, 0xffffffff);
+	rk628_i2c_write(csi->rk628, HDMI_RX_PDEC_ICLR, 0xff3fffff);
 
 	if (!rk628_is_general_isr(csi, md_ints, pdec_ints))
 		return 0;
@@ -1595,22 +1613,6 @@
 		return 0;
 	}
 
-	if (csi->rk628->version < RK628F_VERSION) {
-		if (rk628_audio_ctsnints_enabled(audio_info)) {
-			if (pdec_ints & (ACR_N_CHG_ICLR | ACR_CTS_CHG_ICLR)) {
-				rk628_csi_isr_ctsn(audio_info, pdec_ints);
-				pdec_ints &= ~(ACR_CTS_CHG_ICLR | ACR_CTS_CHG_ICLR);
-				*handled = true;
-			}
-		}
-		if (rk628_audio_fifoints_enabled(audio_info)) {
-			rk628_i2c_read(csi->rk628, HDMI_RX_AUD_FIFO_ISTS, &fifo_ints);
-			if (fifo_ints & 0x18) {
-				rk628_csi_isr_fifoints(audio_info, fifo_ints);
-				*handled = true;
-			}
-		}
-	}
 	v4l2_dbg(1, debug, sd, "%s: md_ints: %#x, pdec_ints:%#x, plugin: %d\n",
 		 __func__, md_ints, pdec_ints, plugin);