linux/drivers/clk/mediatek/clk-gate.h
AngeloGioacchino Del Regno 20498d52c9 clk: mediatek: clk-gate: Propagate struct device with mtk_clk_register_gates()
Commit e4c23e19aa ("clk: mediatek: Register clock gate with device")
introduces a helper function for the sole purpose of propagating a
struct device pointer to the clk API when registering the mtk-gate
clocks to take advantage of Runtime PM when/where needed and where
a power domain is defined in devicetree.

Function mtk_clk_register_gates() then becomes a wrapper around the
new mtk_clk_register_gates_with_dev() function that will simply pass
NULL as struct device: this is essential when registering drivers
with CLK_OF_DECLARE instead of as a platform device, as there will
be no struct device to pass... but we can as well simply have only
one function that always takes such pointer as a param and pass NULL
when unavoidable.

This commit removes the mtk_clk_register_gates() wrapper and renames
mtk_clk_register_gates_with_dev() to the former and all of the calls
to either of the two functions were fixed in all drivers in order to
reflect this change; also, to improve consistency with other kernel
functions, the pointer to struct device was moved as the first param.

Since a lot of MediaTek clock drivers are actually registering as a
platform device, but were still registering the mtk-gate clocks
without passing any struct device to the clock framework, they've
been changed to pass a valid one now, as to make all those platforms
able to use runtime power management where available.

While at it, some much needed indentation changes were also done.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com>
Tested-by: Miles Chen <miles.chen@mediatek.com>
Link: https://lore.kernel.org/r/20230120092053.182923-4-angelogioacchino.delregno@collabora.com
Tested-by: Mingming Su <mingming.su@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2023-01-30 16:44:56 -08:00

61 lines
1.4 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2014 MediaTek Inc.
* Author: James Liao <jamesjj.liao@mediatek.com>
*/
#ifndef __DRV_CLK_GATE_H
#define __DRV_CLK_GATE_H
#include <linux/types.h>
struct clk;
struct clk_hw_onecell_data;
struct clk_ops;
struct device;
struct device_node;
extern const struct clk_ops mtk_clk_gate_ops_setclr;
extern const struct clk_ops mtk_clk_gate_ops_setclr_inv;
extern const struct clk_ops mtk_clk_gate_ops_no_setclr;
extern const struct clk_ops mtk_clk_gate_ops_no_setclr_inv;
struct mtk_gate_regs {
u32 sta_ofs;
u32 clr_ofs;
u32 set_ofs;
};
struct mtk_gate {
int id;
const char *name;
const char *parent_name;
const struct mtk_gate_regs *regs;
int shift;
const struct clk_ops *ops;
unsigned long flags;
};
#define GATE_MTK_FLAGS(_id, _name, _parent, _regs, _shift, \
_ops, _flags) { \
.id = _id, \
.name = _name, \
.parent_name = _parent, \
.regs = _regs, \
.shift = _shift, \
.ops = _ops, \
.flags = _flags, \
}
#define GATE_MTK(_id, _name, _parent, _regs, _shift, _ops) \
GATE_MTK_FLAGS(_id, _name, _parent, _regs, _shift, _ops, 0)
int mtk_clk_register_gates(struct device *dev, struct device_node *node,
const struct mtk_gate *clks, int num,
struct clk_hw_onecell_data *clk_data);
void mtk_clk_unregister_gates(const struct mtk_gate *clks, int num,
struct clk_hw_onecell_data *clk_data);
#endif /* __DRV_CLK_GATE_H */