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author | Maxime Ripard <maxime@cerno.tech> | 2020-05-27 18:47:31 +0300 |
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committer | Philipp Zabel <p.zabel@pengutronix.de> | 2020-06-16 15:19:56 +0300 |
commit | 9357b04624013294e4204b1a837d0a611b9048c3 (patch) | |
tree | 2a4a880dcf38834fbf1c5e0b8b5dc4d591737a15 /include/linux/reset | |
parent | b3a9e3b9622ae10064826dccb4f7a52bd88c7407 (diff) | |
download | linux-9357b04624013294e4204b1a837d0a611b9048c3.tar.xz |
reset: Move reset-simple header out of drivers/reset
The reset-simple code can be useful for drivers outside of drivers/reset
that have a few reset controls as part of their features. Let's move it to
include/linux/reset.
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'include/linux/reset')
-rw-r--r-- | include/linux/reset/reset-simple.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/linux/reset/reset-simple.h b/include/linux/reset/reset-simple.h new file mode 100644 index 000000000000..08ccb25a55e6 --- /dev/null +++ b/include/linux/reset/reset-simple.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Simple Reset Controller ops + * + * Based on Allwinner SoCs Reset Controller driver + * + * Copyright 2013 Maxime Ripard + * + * Maxime Ripard <maxime.ripard@free-electrons.com> + */ + +#ifndef __RESET_SIMPLE_H__ +#define __RESET_SIMPLE_H__ + +#include <linux/io.h> +#include <linux/reset-controller.h> +#include <linux/spinlock.h> + +/** + * struct reset_simple_data - driver data for simple reset controllers + * @lock: spinlock to protect registers during read-modify-write cycles + * @membase: memory mapped I/O register range + * @rcdev: reset controller device base structure + * @active_low: if true, bits are cleared to assert the reset. Otherwise, bits + * are set to assert the reset. Note that this says nothing about + * the voltage level of the actual reset line. + * @status_active_low: if true, bits read back as cleared while the reset is + * asserted. Otherwise, bits read back as set while the + * reset is asserted. + */ +struct reset_simple_data { + spinlock_t lock; + void __iomem *membase; + struct reset_controller_dev rcdev; + bool active_low; + bool status_active_low; +}; + +extern const struct reset_control_ops reset_simple_ops; + +#endif /* __RESET_SIMPLE_H__ */ |