From 23b11b63e9923bc2caaa721891d35907270d7381 Mon Sep 17 00:00:00 2001
From: Tony Xie <tony.xie@rock-chips.com>
Date: Wed, 22 Dec 2021 14:16:10 +0800
Subject: [PATCH] firmware: rockchip_sip: support hdcp.

Signed-off-by: Tony Xie <tony.xie@rock-chips.com>
Change-Id: I2a27208577202f4a40f2208723ee23d6dd192aaf
---
 drivers/firmware/rockchip_sip.c       | 29 +++++++++++++++++++++++
 include/linux/rockchip/rockchip_sip.h | 34 +++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)

diff --git a/drivers/firmware/rockchip_sip.c b/drivers/firmware/rockchip_sip.c
index 7dc30106ef0b..25ccf2c362df 100644
--- a/drivers/firmware/rockchip_sip.c
+++ b/drivers/firmware/rockchip_sip.c
@@ -264,6 +264,35 @@ struct arm_smccc_res sip_smc_lastlog_request(void)
 }
 EXPORT_SYMBOL_GPL(sip_smc_lastlog_request);
 
+void __iomem *sip_hdcp_request_share_memory(int id)
+{
+	static void __iomem *base;
+	struct arm_smccc_res res;
+
+	if (id < 0 || id >= MAX_DEVICE) {
+		pr_err("%s: invalid device id\n", __func__);
+		return NULL;
+	}
+
+	if (!base) {
+		/* request page share memory */
+		res = sip_smc_request_share_mem(2, SHARE_PAGE_TYPE_HDCP);
+		if (IS_SIP_ERROR(res.a0))
+			return NULL;
+		base = (void __iomem *)res.a1;
+	}
+
+	return base + id * 1024;
+}
+
+struct arm_smccc_res sip_hdcp_config(u32 arg0, u32 arg1, u32 arg2)
+{
+	struct arm_smccc_res res;
+
+	res = __invoke_sip_fn_smc(SIP_HDCP_CONFIG, arg0, arg1, arg2);
+	return res;
+}
+
 /************************** fiq debugger **************************************/
 /*
  * AArch32 is not allowed to call SMC64(ATF framework does not support), so we
diff --git a/include/linux/rockchip/rockchip_sip.h b/include/linux/rockchip/rockchip_sip.h
index 104f427541aa..49f74c15c94d 100644
--- a/include/linux/rockchip/rockchip_sip.h
+++ b/include/linux/rockchip/rockchip_sip.h
@@ -52,6 +52,7 @@
 #define SIP_SDEI_FIQ_DBG_SWITCH_CPU	0x82000020
 #define SIP_SDEI_FIQ_DBG_GET_EVENT_ID	0x82000021
 #define RK_SIP_FIQ_CTRL			0x82000024
+#define SIP_HDCP_CONFIG			0x82000025
 
 /* Rockchip Sip version */
 #define SIP_IMPLEMENT_V1                (1)
@@ -138,6 +139,7 @@ typedef enum {
 	SHARE_PAGE_TYPE_DDRFSP,
 	SHARE_PAGE_TYPE_DDR_ADDRMAP,
 	SHARE_PAGE_TYPE_LAST_LOG,
+	SHARE_PAGE_TYPE_HDCP,
 	SHARE_PAGE_TYPE_MAX,
 } share_page_type_t;
 
@@ -148,6 +150,25 @@ enum {
 	RK_SIP_FIQ_CTRL_SET_AFF
 };
 
+/* hdcp function types */
+enum {
+	HDCP_FUNC_STORAGE_INCRYPT = 1,
+	HDCP_FUNC_KEY_LOAD,
+	HDCP_FUNC_ENCRYPT_MODE
+};
+
+/* support hdcp device list */
+enum {
+	DP_TX0,
+	DP_TX1,
+	EDP_TX0,
+	EDP_TX1,
+	HDMI_TX0,
+	HDMI_TX1,
+	HDMI_RX,
+	MAX_DEVICE,
+};
+
 /*
  * Rules: struct arm_smccc_res contains result and data, details:
  *
@@ -174,6 +195,8 @@ u32 sip_smc_secure_reg_read(u32 addr_phy);
 struct arm_smccc_res sip_smc_bus_config(u32 arg0, u32 arg1, u32 arg2);
 struct dram_addrmap_info *sip_smc_get_dram_map(void);
 
+void __iomem *sip_hdcp_request_share_memory(int id);
+struct arm_smccc_res sip_hdcp_config(u32 arg0, u32 arg1, u32 arg2);
 /***************************fiq debugger **************************************/
 void sip_fiq_debugger_enable_fiq(bool enable, uint32_t tgt_cpu);
 void sip_fiq_debugger_enable_debug(bool enable);
@@ -255,6 +278,17 @@ static inline struct dram_addrmap_info *sip_smc_get_dram_map(void)
 	return NULL;
 }
 
+static inline void __iomem *sip_hdcp_request_share_memory(int id)
+{
+	return NULL;
+}
+
+static inline struct arm_smccc_res sip_hdcp_config(u32 arg0, u32 arg1, u32 arg2)
+{
+	struct arm_smccc_res tmp = {0};
+	return tmp;
+}
+
 /***************************fiq debugger **************************************/
 static inline void sip_fiq_debugger_enable_fiq
 			(bool enable, uint32_t tgt_cpu) { return; }