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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/clk/qcom/reset.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/clk/qcom/reset.c')
-rw-r--r--kernel/drivers/clk/qcom/reset.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/kernel/drivers/clk/qcom/reset.c b/kernel/drivers/clk/qcom/reset.c
new file mode 100644
index 000000000..6c977d3a8
--- /dev/null
+++ b/kernel/drivers/clk/qcom/reset.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2013, The Linux Foundation. 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/bitops.h>
+#include <linux/export.h>
+#include <linux/regmap.h>
+#include <linux/reset-controller.h>
+#include <linux/delay.h>
+
+#include "reset.h"
+
+static int qcom_reset(struct reset_controller_dev *rcdev, unsigned long id)
+{
+ rcdev->ops->assert(rcdev, id);
+ udelay(1);
+ rcdev->ops->deassert(rcdev, id);
+ return 0;
+}
+
+static int
+qcom_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
+{
+ struct qcom_reset_controller *rst;
+ const struct qcom_reset_map *map;
+ u32 mask;
+
+ rst = to_qcom_reset_controller(rcdev);
+ map = &rst->reset_map[id];
+ mask = BIT(map->bit);
+
+ return regmap_update_bits(rst->regmap, map->reg, mask, mask);
+}
+
+static int
+qcom_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
+{
+ struct qcom_reset_controller *rst;
+ const struct qcom_reset_map *map;
+ u32 mask;
+
+ rst = to_qcom_reset_controller(rcdev);
+ map = &rst->reset_map[id];
+ mask = BIT(map->bit);
+
+ return regmap_update_bits(rst->regmap, map->reg, mask, 0);
+}
+
+struct reset_control_ops qcom_reset_ops = {
+ .reset = qcom_reset,
+ .assert = qcom_reset_assert,
+ .deassert = qcom_reset_deassert,
+};
+EXPORT_SYMBOL_GPL(qcom_reset_ops);