diff options
| author | Chunyan Zhang <chunyan.zhang@spreadtrum.com> | 2017-12-07 13:57:06 +0100 |
|---|---|---|
| committer | Stephen Boyd <sboyd@codeaurora.org> | 2017-12-22 00:00:51 +0100 |
| commit | cdb09f67a2b58f0e0a2764243cf2c912c158f0a6 (patch) | |
| tree | 2d99315e7b4547a04890c55b00aded1f064fa284 /drivers/clk/sprd/gate.h | |
| parent | clk: sprd: Add common infrastructure (diff) | |
| download | linux-cdb09f67a2b58f0e0a2764243cf2c912c158f0a6.tar.xz linux-cdb09f67a2b58f0e0a2764243cf2c912c158f0a6.zip | |
clk: sprd: add gate clock support
Some clocks on the Spreadtrum's SoCs are just simple gates. Add
support for those clocks.
Signed-off-by: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk/sprd/gate.h')
| -rw-r--r-- | drivers/clk/sprd/gate.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/clk/sprd/gate.h b/drivers/clk/sprd/gate.h new file mode 100644 index 000000000000..2e582c68a08b --- /dev/null +++ b/drivers/clk/sprd/gate.h @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Spreadtrum gate clock driver +// +// Copyright (C) 2017 Spreadtrum, Inc. +// Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com> + +#ifndef _SPRD_GATE_H_ +#define _SPRD_GATE_H_ + +#include "common.h" + +struct sprd_gate { + u32 enable_mask; + u16 flags; + u16 sc_offset; + + struct sprd_clk_common common; +}; + +#define SPRD_SC_GATE_CLK_OPS(_struct, _name, _parent, _reg, _sc_offset, \ + _enable_mask, _flags, _gate_flags, _ops) \ + struct sprd_gate _struct = { \ + .enable_mask = _enable_mask, \ + .sc_offset = _sc_offset, \ + .flags = _gate_flags, \ + .common = { \ + .regmap = NULL, \ + .reg = _reg, \ + .hw.init = CLK_HW_INIT(_name, \ + _parent, \ + _ops, \ + _flags), \ + } \ + } + +#define SPRD_GATE_CLK(_struct, _name, _parent, _reg, \ + _enable_mask, _flags, _gate_flags) \ + SPRD_SC_GATE_CLK_OPS(_struct, _name, _parent, _reg, 0, \ + _enable_mask, _flags, _gate_flags, \ + &sprd_gate_ops) + +#define SPRD_SC_GATE_CLK(_struct, _name, _parent, _reg, _sc_offset, \ + _enable_mask, _flags, _gate_flags) \ + SPRD_SC_GATE_CLK_OPS(_struct, _name, _parent, _reg, _sc_offset, \ + _enable_mask, _flags, _gate_flags, \ + &sprd_sc_gate_ops) + +static inline struct sprd_gate *hw_to_sprd_gate(const struct clk_hw *hw) +{ + struct sprd_clk_common *common = hw_to_sprd_clk_common(hw); + + return container_of(common, struct sprd_gate, common); +} + +extern const struct clk_ops sprd_gate_ops; +extern const struct clk_ops sprd_sc_gate_ops; + +#endif /* _SPRD_GATE_H_ */ |