summaryrefslogtreecommitdiff
path: root/drivers/clk/qcom/reset.c
diff options
context:
space:
mode:
authorDmitry Torokhov <dmitry.torokhov@gmail.com>2014-04-03 20:26:49 +0400
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-04-03 20:26:49 +0400
commit692d96552c9a86a919fe6b5b82288a6c77c015a5 (patch)
treea9e49c040d361ea2293a8966832378def5a06714 /drivers/clk/qcom/reset.c
parente4dbedc7eac7da9db363a36f2bd4366962eeefcc (diff)
parente2c3ecf0ea8e87c5209371af7da107ebc47a5639 (diff)
downloadlinux-692d96552c9a86a919fe6b5b82288a6c77c015a5.tar.xz
Merge branch 'next' into for-linus
First round of input updates for 3.15.
Diffstat (limited to 'drivers/clk/qcom/reset.c')
-rw-r--r--drivers/clk/qcom/reset.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/clk/qcom/reset.c b/drivers/clk/qcom/reset.c
new file mode 100644
index 000000000000..6c977d3a8590
--- /dev/null
+++ b/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);