From: Youngmin Nam <youngmin.nam@samsung.com>
Date: Wed, 5 Dec 2018 05:09:12 +0000 (+0900)
Subject: [RAMEN9610-9153][9610] soc: samsung: acpm: Add disable PMU_DBGCORE interrupt on ACPM... 
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ee9fe8e9a24c742e49c9df24f5a9671f412c2374;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[RAMEN9610-9153][9610] soc: samsung: acpm: Add disable PMU_DBGCORE interrupt on ACPM timeout

Change-Id: I6f3425912b4cf29441a952cd40f9e154a8c394c6
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>
---

diff --git a/drivers/soc/samsung/acpm/acpm_ipc.c b/drivers/soc/samsung/acpm/acpm_ipc.c
index 85399028f734..e2d0239cb998 100644
--- a/drivers/soc/samsung/acpm/acpm_ipc.c
+++ b/drivers/soc/samsung/acpm/acpm_ipc.c
@@ -21,6 +21,7 @@
 #include <linux/slab.h>
 #include <linux/debug-snapshot.h>
 #include <linux/sched/clock.h>
+#include <soc/samsung/exynos-pmu.h>
 
 #include "acpm.h"
 #include "acpm_ipc.h"
@@ -577,6 +578,30 @@ int acpm_ipc_send_data_sync(unsigned int channel_id, struct ipc_config *cfg)
 	return ret;
 }
 
+/* EXYNOS9610 PMU_DBGCORE */
+#define PMU_DBGCORE_INTR_ENABLE			(0x430)
+#define PMU_DBGCORE_INTR			(0x434)
+
+/* PMU_DBGCORE BIT FIELD */
+#define CLUSTER0_WDTRESET_ENABLE		(1 << 0)
+#define WRESET_ENABLE				(1 << 7)
+#define INTR_ACK				(1 << 31)
+
+void exynos9610_disable_pmu_dbg_intr(void)
+{
+	u32 reg;
+
+	/* PMU_DBGCORE interrupt disable */
+	exynos_pmu_read(PMU_DBGCORE_INTR_ENABLE, &reg);
+	reg &= ~(CLUSTER0_WDTRESET_ENABLE | WRESET_ENABLE);
+	exynos_pmu_write(PMU_DBGCORE_INTR_ENABLE, reg);
+
+	/* PMU_DBGCORE ack */
+	exynos_pmu_read(PMU_DBGCORE_INTR, &reg);
+	reg |= INTR_ACK;
+	exynos_pmu_write(PMU_DBGCORE_INTR, reg);
+}
+
 int acpm_ipc_send_data(unsigned int channel_id, struct ipc_config *cfg)
 {
 	unsigned int front;
@@ -685,6 +710,9 @@ retry:
 			acpm_debug->debug_log_level = 0;
 			acpm_ramdump();
 
+			/* To prevent WARM reset stuck, HOST-AP set ACK bit */
+			exynos9610_disable_pmu_dbg_intr();
+
 			BUG_ON(timeout_flag);
 			return -ETIMEDOUT;
 		}