From feb05d124af8a255a332468aa16309c285922c43 Mon Sep 17 00:00:00 2001
From: Zefa Chen <zefa.chen@rock-chips.com>
Date: Tue, 6 Sep 2022 14:15:35 +0800
Subject: [PATCH] media: i2c: sc500ai support get channel info

Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
Change-Id: I53e3d0389de3b0bcc5fd86a7184826aaecd39594
---
 drivers/media/i2c/sc500ai.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/drivers/media/i2c/sc500ai.c b/drivers/media/i2c/sc500ai.c
index b232eafdf210..7797885804a0 100644
--- a/drivers/media/i2c/sc500ai.c
+++ b/drivers/media/i2c/sc500ai.c
@@ -908,11 +908,23 @@ static int sc500ai_set_hdrae(struct sc500ai *sc500ai,
 	return ret;
 }
 
+static int sc500ai_get_channel_info(struct sc500ai *sc500ai, struct rkmodule_channel_info *ch_info)
+{
+	if (ch_info->index < PAD0 || ch_info->index >= PAD_MAX)
+		return -EINVAL;
+	ch_info->vc = sc500ai->cur_mode->vc[ch_info->index];
+	ch_info->width = sc500ai->cur_mode->width;
+	ch_info->height = sc500ai->cur_mode->height;
+	ch_info->bus_fmt = sc500ai->cur_mode->bus_fmt;
+	return 0;
+}
+
 static long sc500ai_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
 {
 	struct sc500ai *sc500ai = to_sc500ai(sd);
 	struct rkmodule_hdr_cfg *hdr;
 	const struct sc500ai_mode *mode;
+	struct rkmodule_channel_info *ch_info;
 
 	long ret = 0;
 	u32 i, h, w;
@@ -974,6 +986,10 @@ static long sc500ai_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
 			ret = sc500ai_write_reg(sc500ai->client, SC500AI_REG_CTRL_MODE,
 			                        SC500AI_REG_VALUE_08BIT, SC500AI_MODE_SW_STANDBY);
 		break;
+	case RKMODULE_GET_CHANNEL_INFO:
+		ch_info = (struct rkmodule_channel_info *)arg;
+		ret = sc500ai_get_channel_info(sc500ai, ch_info);
+		break;
 	default:
 		ret = -ENOIOCTLCMD;
 		break;
@@ -990,6 +1006,7 @@ static long sc500ai_compat_ioctl32(struct v4l2_subdev *sd,
 	struct rkmodule_inf *inf;
 	struct rkmodule_hdr_cfg *hdr;
 	struct preisp_hdrae_exp_s *hdrae;
+	struct rkmodule_channel_info *ch_info;
 	long ret = 0;
 	u32 stream = 0;
 
@@ -1056,6 +1073,21 @@ static long sc500ai_compat_ioctl32(struct v4l2_subdev *sd,
 
 		ret = sc500ai_ioctl(sd, cmd, &stream);
 		break;
+	case RKMODULE_GET_CHANNEL_INFO:
+		ch_info = kzalloc(sizeof(*ch_info), GFP_KERNEL);
+		if (!ch_info) {
+			ret = -ENOMEM;
+			return ret;
+		}
+
+		ret = sc500ai_ioctl(sd, cmd, ch_info);
+		if (!ret) {
+			ret = copy_to_user(up, ch_info, sizeof(*ch_info));
+			if (ret)
+				ret = -EFAULT;
+		}
+		kfree(ch_info);
+		break;
 	default:
 		ret = -ENOIOCTLCMD;
 		break;