disp: msm: sde: add evt log minidump partition

Changes are made to add wrapper function to add a minidump
partition. Also, to add evt log to minidump.

Change-Id: I1204a965bab9db72cb3d381a2817dbe8ef723c66
Signed-off-by: Andhavarapu Karthik <kartkart@codeaurora.org>

msm/sde_dbg.c

@@ -300,6 +300,18 @@ struct sde_dbg_evtlog *sde_dbg_base_evtlog;
 /* sde_dbg_base_reglog - global pointer to main sde reg log for macro use */
 struct sde_dbg_reglog *sde_dbg_base_reglog;
 
+u32 sde_mini_dump_add_region(const char *name, u32 size, void *virt_addr)
+{
+	struct md_region md_entry;
+
+	strlcpy(md_entry.name, name, sizeof(md_entry.name));
+	md_entry.virt_addr = (uintptr_t)virt_addr;
+	md_entry.phys_addr = virt_to_phys(virt_addr);
+	md_entry.size = size;
+
+	return msm_minidump_add_region(&md_entry);
+}
+
 static void _sde_debug_bus_xbar_dump(void __iomem *mem_base,
 		struct sde_debug_bus_entry *entry, u32 val, u32 block_id_off,
 		u32 test_id_off)

msm/sde_dbg.h

@@ -9,6 +9,7 @@
 #include <stdarg.h>
 #include <linux/debugfs.h>
 #include <linux/list.h>
+#include <soc/qcom/minidump.h>
 
 /* select an uncommon hex value for the limiter */
 #define SDE_EVTLOG_DATA_LIMITER	(0xC0DEBEEF)
@@ -248,6 +249,8 @@ extern struct sde_dbg_reglog *sde_dbg_base_reglog;
 #define SDE_DBG_CTRL(...) sde_dbg_ctrl(__func__, ##__VA_ARGS__, \
 		SDE_DBG_DUMP_DATA_LIMITER)
 
+u32 sde_mini_dump_add_region(const char *name, u32 size, void *virt_addr);
+
 /**
  * sde_evtlog_init - allocate a new event log object
  * Returns:	evtlog or -ERROR

msm/sde_dbg_evtlog.c

@@ -223,6 +223,10 @@ struct sde_dbg_evtlog *sde_evtlog_init(void)
 	if (!evtlog)
 		return ERR_PTR(-ENOMEM);
 
+	if (sde_mini_dump_add_region("evt_log", sizeof(*evtlog),
+			evtlog) < 0)
+		pr_err("minidump add region failed for evtlog\n");
+
 	spin_lock_init(&evtlog->spin_lock);
 	evtlog->enable = SDE_EVTLOG_DEFAULT_ENABLE;