-/* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
TP_printk("crtc:%d", __entry->crtc_id)
);
+TRACE_EVENT(sde_encoder_underrun,
+ TP_PROTO(u32 enc_id, u32 underrun_cnt),
+ TP_ARGS(enc_id, underrun_cnt),
+ TP_STRUCT__entry(
+ __field(u32, enc_id)
+ __field(u32, underrun_cnt)
+ ),
+ TP_fast_assign(
+ __entry->enc_id = enc_id;
+ __entry->underrun_cnt = underrun_cnt;
+
+ ),
+ TP_printk("enc:%d underrun_cnt:%d", __entry->enc_id,
+ __entry->underrun_cnt)
+);
+
TRACE_EVENT(sde_mark_write,
TP_PROTO(int pid, const char *name, bool trace_begin),
TP_ARGS(pid, name, trace_begin),
-/* Copyright (c) 2009-2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2009-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
/* print debug ranges in groups of 4 u32s */
#define REG_DUMP_ALIGN 16
+#define DBG_CTRL_STOP_FTRACE BIT(0)
+#define DBG_CTRL_PANIC_UNDERRUN BIT(1)
+#define DBG_CTRL_MAX BIT(2)
/**
* struct sde_dbg_reg_offset - tracking for start and end of region
struct sde_dbg_sde_debug_bus dbgbus_sde;
struct sde_dbg_vbif_debug_bus dbgbus_vbif_rt;
+ u32 debugfs_ctrl;
} sde_dbg_base;
/* sde_dbg_base_evtlog - global pointer to main sde event log for macro use */
}
}
+void sde_dbg_ctrl(const char *name, ...)
+{
+ int i = 0;
+ va_list args;
+ char *blk_name = NULL;
+
+
+ /* no debugfs controlled events are enabled, just return */
+ if (!sde_dbg_base.debugfs_ctrl)
+ return;
+
+ va_start(args, name);
+
+ while ((blk_name = va_arg(args, char*))) {
+ if (i++ >= SDE_EVTLOG_MAX_DATA) {
+ pr_err("could not parse all dbg arguments\n");
+ break;
+ }
+
+ if (IS_ERR_OR_NULL(blk_name))
+ break;
+
+ if (!strcmp(blk_name, "stop_ftrace") &&
+ sde_dbg_base.debugfs_ctrl &
+ DBG_CTRL_STOP_FTRACE) {
+ pr_debug("tracing off\n");
+ tracing_off();
+ }
+
+ if (!strcmp(blk_name, "panic_underrun") &&
+ sde_dbg_base.debugfs_ctrl &
+ DBG_CTRL_PANIC_UNDERRUN) {
+ pr_debug("panic underrun\n");
+ panic("underrun");
+ }
+ }
+
+}
+
/*
* sde_dbg_debugfs_open - debugfs open handler for evtlog dump
* @inode: debugfs inode
.write = sde_evtlog_dump_write,
};
+/**
+ * sde_dbg_ctrl_read - debugfs read handler for debug ctrl read
+ * @file: file handler
+ * @buff: user buffer content for debugfs
+ * @count: size of user buffer
+ * @ppos: position offset of user buffer
+ */
+static ssize_t sde_dbg_ctrl_read(struct file *file, char __user *buff,
+ size_t count, loff_t *ppos)
+{
+ ssize_t len = 0;
+ char buf[24] = {'\0'};
+
+ if (!buff || !ppos)
+ return -EINVAL;
+
+ if (*ppos)
+ return 0; /* the end */
+
+ len = snprintf(buf, sizeof(buf), "0x%x\n", sde_dbg_base.debugfs_ctrl);
+ pr_debug("%s: ctrl:0x%x len:0x%zx\n",
+ __func__, sde_dbg_base.debugfs_ctrl, len);
+
+ if ((count < sizeof(buf)) || copy_to_user(buff, buf, len)) {
+ pr_err("error copying the buffer! count:0x%zx\n", count);
+ return -EFAULT;
+ }
+
+ *ppos += len; /* increase offset */
+ return len;
+}
+
+/**
+ * sde_dbg_ctrl_write - debugfs read handler for debug ctrl write
+ * @file: file handler
+ * @user_buf: user buffer content from debugfs
+ * @count: size of user buffer
+ * @ppos: position offset of user buffer
+ */
+static ssize_t sde_dbg_ctrl_write(struct file *file,
+ const char __user *user_buf, size_t count, loff_t *ppos)
+{
+ u32 dbg_ctrl = 0;
+ char buf[24];
+
+ if (!file) {
+ pr_err("DbgDbg: %s: error no file --\n", __func__);
+ return -EINVAL;
+ }
+
+ if (count >= sizeof(buf))
+ return -EFAULT;
+
+
+ if (copy_from_user(buf, user_buf, count))
+ return -EFAULT;
+
+ buf[count] = 0; /* end of string */
+
+ if (kstrtouint(buf, 0, &dbg_ctrl)) {
+ pr_err("%s: error in the number of bytes\n", __func__);
+ return -EFAULT;
+ }
+
+ pr_debug("dbg_ctrl_read:0x%x\n", dbg_ctrl);
+ sde_dbg_base.debugfs_ctrl = dbg_ctrl;
+
+ return count;
+}
+
+static const struct file_operations sde_dbg_ctrl_fops = {
+ .open = sde_dbg_debugfs_open,
+ .read = sde_dbg_ctrl_read,
+ .write = sde_dbg_ctrl_write,
+};
+
void sde_dbg_init_dbg_buses(u32 hwversion)
{
static struct sde_dbg_base *dbg = &sde_dbg_base;
for (i = 0; i < SDE_EVTLOG_ENTRY; i++)
sde_dbg_base.evtlog->logs[i].counter = i;
+ debugfs_create_file("dbg_ctrl", 0600, sde_dbg_base.root, NULL,
+ &sde_dbg_ctrl_fops);
debugfs_create_file("dump", 0600, sde_dbg_base.root, NULL,
&sde_evtlog_fops);
debugfs_create_u32("enable", 0600, sde_dbg_base.root,
-/* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
#define SDE_DBG_DUMP_WQ(...) sde_dbg_dump(true, __func__, ##__VA_ARGS__, \
SDE_DBG_DUMP_DATA_LIMITER)
+/**
+ * SDE_DBG_EVT_CTRL - trigger a different driver events
+ * event: event that trigger different behavior in the driver
+ */
+#define SDE_DBG_CTRL(...) sde_dbg_ctrl(__func__, ##__VA_ARGS__, \
+ SDE_DBG_DUMP_DATA_LIMITER)
+
#if defined(CONFIG_DEBUG_FS)
/**
void sde_dbg_dump(bool queue_work, const char *name, ...);
/**
+ * sde_dbg_ctrl - trigger specific actions for the driver with debugging
+ * purposes. Those actions need to be enabled by the debugfs entry
+ * so the driver executes those actions in the corresponding calls.
+ * @va_args: list of actions to trigger
+ * Returns: none
+ */
+void sde_dbg_ctrl(const char *name, ...);
+
+/**
* sde_dbg_reg_register_base - register a hw register address section for later
* dumping. call this before calling sde_dbg_reg_register_dump_range
* to be able to specify sub-ranges within the base hw range.
{
}
+static inline void sde_dbg_ctrl(const char *name, ...)
+{
+}
+
static inline int sde_dbg_reg_register_base(const char *name,
void __iomem *base, size_t max_offset)
{
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