msm: clock: Move debugfs code from clock.c to clock-debug.c

The clock debugfs code is large enough, and easy enough to separate,
that it deserves its own file which is compiled only when
CONFIG_DEBUG_FS is enabled.

Also, cleanup header file #includes that are no longer required.

Reviewed-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>

1 files changed, 133 insertions, 0 deletions

diff --git a/arch/arm/mach-msm/clock-debug.c b/arch/arm/mach-msm/clock-debug.c
new file mode 100644
index 000000000000..6f603edbb4d0
--- /dev/null
+++ b/arch/arm/mach-msm/clock-debug.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/debugfs.h>
+#include <linux/clk.h>
+#include "clock.h"
+#include "clock-pcom.h"
+
+static int clock_debug_rate_set(void *data, u64 val)
+{
+	struct clk *clock = data;
+	int ret;
+
+	/* Only increases to max rate will succeed, but that's actually good
+	 * for debugging purposes so we don't check for error. */
+	if (clock->flags & CLK_MAX)
+		clk_set_max_rate(clock, val);
+	if (clock->flags & CLK_MIN)
+		ret = clk_set_min_rate(clock, val);
+	else
+		ret = clk_set_rate(clock, val);
+	if (ret != 0)
+		printk(KERN_ERR "clk_set%s_rate failed (%d)\n",
+			(clock->flags & CLK_MIN) ? "_min" : "", ret);
+	return ret;
+}
+
+static int clock_debug_rate_get(void *data, u64 *val)
+{
+	struct clk *clock = data;
+	*val = clk_get_rate(clock);
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(clock_rate_fops, clock_debug_rate_get,
+			clock_debug_rate_set, "%llu\n");
+
+static int clock_debug_enable_set(void *data, u64 val)
+{
+	struct clk *clock = data;
+	int rc = 0;
+
+	if (val)
+		rc = clock->ops->enable(clock->id);
+	else
+		clock->ops->disable(clock->id);
+
+	return rc;
+}
+
+static int clock_debug_enable_get(void *data, u64 *val)
+{
+	struct clk *clock = data;
+
+	*val = clock->ops->is_enabled(clock->id);
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(clock_enable_fops, clock_debug_enable_get,
+			clock_debug_enable_set, "%llu\n");
+
+static int clock_debug_local_get(void *data, u64 *val)
+{
+	struct clk *clock = data;
+
+	*val = clock->ops != &clk_ops_pcom;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(clock_local_fops, clock_debug_local_get,
+			NULL, "%llu\n");
+
+static struct dentry *dent_rate, *dent_enable, *dent_local;
+
+int __init clock_debug_init(void)
+{
+	dent_rate = debugfs_create_dir("clk_rate", 0);
+	if (!dent_rate)
+		goto err;
+
+	dent_enable = debugfs_create_dir("clk_enable", 0);
+	if (!dent_enable)
+		goto err;
+
+	dent_local = debugfs_create_dir("clk_local", NULL);
+	if (!dent_local)
+		goto err;
+
+	return 0;
+err:
+	debugfs_remove(dent_local);
+	debugfs_remove(dent_enable);
+	debugfs_remove(dent_rate);
+	return -ENOMEM;
+}
+
+int __init clock_debug_add(struct clk *clock)
+{
+	char temp[50], *ptr;
+
+	if (!dent_rate || !dent_enable || !dent_local)
+		return -ENOMEM;
+
+	strncpy(temp, clock->dbg_name, ARRAY_SIZE(temp)-1);
+	for (ptr = temp; *ptr; ptr++)
+		*ptr = tolower(*ptr);
+
+	debugfs_create_file(temp, S_IRUGO | S_IWUSR, dent_rate,
+			    clock, &clock_rate_fops);
+	debugfs_create_file(temp, S_IRUGO | S_IWUSR, dent_enable,
+			    clock, &clock_enable_fops);
+	debugfs_create_file(temp, S_IRUGO, dent_local,
+			    clock, &clock_local_fops);
+
+	return 0;
+}