From e996f25f3942fad58a23ade0344572c4bbf37c44 Mon Sep 17 00:00:00 2001
From: Cai YiWei <cyw@rock-chips.com>
Date: Fri, 29 Jul 2022 18:44:38 +0800
Subject: [PATCH] media: rockchip: isp: sync head for compressed data

Change-Id: Iabfba2ce0b9e8687f3935330f56ff3bb5c5e340b
Signed-off-by: Cai YiWei <cyw@rock-chips.com>
---
 include/uapi/linux/rk-camera-module.h | 28 +++++++++++++++++++++++++++
 include/uapi/linux/rkisp2-config.h    |  2 ++
 2 files changed, 30 insertions(+)

diff --git a/include/uapi/linux/rk-camera-module.h b/include/uapi/linux/rk-camera-module.h
index 9dd909c478d0..c007c76e3939 100644
--- a/include/uapi/linux/rk-camera-module.h
+++ b/include/uapi/linux/rk-camera-module.h
@@ -354,11 +354,38 @@ struct rkmodule_lsc_cfg {
  * NO_HDR: linear mode
  * HDR_X2: hdr two frame or line mode
  * HDR_X3: hdr three or line mode
+ * HDR_COMPR: linearised and compressed data for hdr
  */
 enum rkmodule_hdr_mode {
 	NO_HDR = 0,
 	HDR_X2 = 5,
 	HDR_X3 = 6,
+	HDR_COMPR,
+};
+
+enum rkmodule_hdr_compr_segment {
+	HDR_COMPR_SEGMENT_4 = 4,
+	HDR_COMPR_SEGMENT_12 = 12,
+	HDR_COMPR_SEGMENT_16 = 16,
+};
+
+/* rkmodule_hdr_compr
+ * linearised and compressed data for hdr: data_src = K * data_compr + XX
+ *
+ * bit: bit of src data, max 20 bit.
+ * segment: linear segment, support 4, 6 or 16.
+ * k_shift: left shift bit of slop amplification factor, 2^k_shift, [0 15].
+ * slope_k: K * 2^k_shift.
+ * data_src_shitf: left shift bit of source data, data_src = 2^data_src_shitf
+ * data_compr: compressed data.
+ */
+struct rkmodule_hdr_compr {
+	enum rkmodule_hdr_compr_segment segment;
+	__u8 bit;
+	__u8 k_shift;
+	__u8 data_src_shitf[HDR_COMPR_SEGMENT_16];
+	__u16 data_compr[HDR_COMPR_SEGMENT_16];
+	__u32 slope_k[HDR_COMPR_SEGMENT_16];
 };
 
 /**
@@ -397,6 +424,7 @@ struct rkmodule_hdr_esp {
 struct rkmodule_hdr_cfg {
 	__u32 hdr_mode;
 	struct rkmodule_hdr_esp esp;
+	struct rkmodule_hdr_compr compr;
 } __attribute__ ((packed));
 
 /* sensor lvds sync code
diff --git a/include/uapi/linux/rkisp2-config.h b/include/uapi/linux/rkisp2-config.h
index 82b345686ca1..0822a007f7cb 100644
--- a/include/uapi/linux/rkisp2-config.h
+++ b/include/uapi/linux/rkisp2-config.h
@@ -251,6 +251,7 @@ struct isp2x_mesh_head {
  * T_START_X1: isp read one frame
  * T_START_X2: isp read hdr two frame
  * T_START_X3: isp read hdr three frame
+ * T_START_C: isp read hdr linearised and compressed data
  */
 enum isp2x_trigger_mode {
 	T_TRY = BIT(0),
@@ -260,6 +261,7 @@ enum isp2x_trigger_mode {
 	T_START_X1 = BIT(4),
 	T_START_X2 = BIT(5),
 	T_START_X3 = BIT(6),
+	T_START_C = BIT(7),
 };
 
 struct isp2x_csi_trigger {