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linux/drivers/clk/sprd/gate.h

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clk: sprd: Use the correct style for SPDX License Identifier This patch corrects the SPDX License Identifier style in header files related to Clock Drivers for Spreadtrum SoCs. For C header files Documentation/process/license-rules.rst mandates C-like comments (opposed to C source files where C++ style should be used) Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46 Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-05-01 15:08:22 +05:30
/* SPDX-License-Identifier: GPL-2.0 */
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>
2017-12-07 20:57:06 +08:00
//
// 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;
clk: sprd: add gate for pll clocks Some sprd's gate clocks are used to the switch of pll, which need to wait a certain time for stable after being enabled. Signed-off-by: Xiaolong Zhang <xiaolong.zhang@unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-2-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:24 +08:00
u16 udelay;
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>
2017-12-07 20:57:06 +08:00
struct sprd_clk_common common;
};
clk: sprd: check its parent status before reading gate clock Some clocks only can be accessed if their parent is enabled. mipi_csi_xx clocks on SC9863A are an examples. We have to ensure the parent clock is enabled when reading those clocks. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200527053638.31439-2-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-05-27 13:36:35 +08:00
/*
* sprd_gate->flags is used for:
* CLK_GATE_SET_TO_DISABLE BIT(0)
* CLK_GATE_HIWORD_MASK BIT(1)
* CLK_GATE_BIG_ENDIAN BIT(2)
* so we define new flags from BIT(3)
*/
#define SPRD_GATE_NON_AON BIT(3) /* not alway powered on, check before read */
clk: sprd: Add macros for referencing parents without strings With the new clk parenting code, clk_init_data was expanded to include .parent_hws and .parent_data, for clk drivers to specify parents without name strings of clocks. Also some macros were added for using these two items to reference clock parents. Based on that to expand macros for sprd clocks: - SPRD_*_DATA, take an array of struct clk_parent_data * as its parents which should be a combination of .fw_name (devicetree clock-names), .hw (pointers to a local struct clk_hw). - SPRD_*_HW, take a local struct clk_hw pointer, instead of a string, as its parent. - SPRD_*_FW_NAME, take a string of clock-names decleared in the device tree as the clock parent. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-6-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:28 +08:00
#define SPRD_SC_GATE_CLK_HW_INIT_FN(_struct, _name, _parent, _reg, \
clk: sprd: add gate for pll clocks Some sprd's gate clocks are used to the switch of pll, which need to wait a certain time for stable after being enabled. Signed-off-by: Xiaolong Zhang <xiaolong.zhang@unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-2-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:24 +08:00
_sc_offset, _enable_mask, _flags, \
clk: sprd: Add macros for referencing parents without strings With the new clk parenting code, clk_init_data was expanded to include .parent_hws and .parent_data, for clk drivers to specify parents without name strings of clocks. Also some macros were added for using these two items to reference clock parents. Based on that to expand macros for sprd clocks: - SPRD_*_DATA, take an array of struct clk_parent_data * as its parents which should be a combination of .fw_name (devicetree clock-names), .hw (pointers to a local struct clk_hw). - SPRD_*_HW, take a local struct clk_hw pointer, instead of a string, as its parent. - SPRD_*_FW_NAME, take a string of clock-names decleared in the device tree as the clock parent. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-6-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:28 +08:00
_gate_flags, _udelay, _ops, _fn) \
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>
2017-12-07 20:57:06 +08:00
struct sprd_gate _struct = { \
.enable_mask = _enable_mask, \
.sc_offset = _sc_offset, \
.flags = _gate_flags, \
clk: sprd: add gate for pll clocks Some sprd's gate clocks are used to the switch of pll, which need to wait a certain time for stable after being enabled. Signed-off-by: Xiaolong Zhang <xiaolong.zhang@unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-2-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:24 +08:00
.udelay = _udelay, \
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>
2017-12-07 20:57:06 +08:00
.common = { \
.regmap = NULL, \
.reg = _reg, \
clk: sprd: Add macros for referencing parents without strings With the new clk parenting code, clk_init_data was expanded to include .parent_hws and .parent_data, for clk drivers to specify parents without name strings of clocks. Also some macros were added for using these two items to reference clock parents. Based on that to expand macros for sprd clocks: - SPRD_*_DATA, take an array of struct clk_parent_data * as its parents which should be a combination of .fw_name (devicetree clock-names), .hw (pointers to a local struct clk_hw). - SPRD_*_HW, take a local struct clk_hw pointer, instead of a string, as its parent. - SPRD_*_FW_NAME, take a string of clock-names decleared in the device tree as the clock parent. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-6-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:28 +08:00
.hw.init = _fn(_name, _parent, \
_ops, _flags), \
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>
2017-12-07 20:57:06 +08:00
} \
}
clk: sprd: Add macros for referencing parents without strings With the new clk parenting code, clk_init_data was expanded to include .parent_hws and .parent_data, for clk drivers to specify parents without name strings of clocks. Also some macros were added for using these two items to reference clock parents. Based on that to expand macros for sprd clocks: - SPRD_*_DATA, take an array of struct clk_parent_data * as its parents which should be a combination of .fw_name (devicetree clock-names), .hw (pointers to a local struct clk_hw). - SPRD_*_HW, take a local struct clk_hw pointer, instead of a string, as its parent. - SPRD_*_FW_NAME, take a string of clock-names decleared in the device tree as the clock parent. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-6-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:28 +08:00
#define SPRD_SC_GATE_CLK_OPS_UDELAY(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, _udelay, _ops) \
SPRD_SC_GATE_CLK_HW_INIT_FN(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, _udelay, _ops, CLK_HW_INIT)
clk: sprd: add gate for pll clocks Some sprd's gate clocks are used to the switch of pll, which need to wait a certain time for stable after being enabled. Signed-off-by: Xiaolong Zhang <xiaolong.zhang@unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-2-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:24 +08:00
#define SPRD_SC_GATE_CLK_OPS(_struct, _name, _parent, _reg, _sc_offset, \
_enable_mask, _flags, _gate_flags, _ops) \
SPRD_SC_GATE_CLK_OPS_UDELAY(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, 0, _ops)
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>
2017-12-07 20:57:06 +08:00
#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)
clk: sprd: Add macros for referencing parents without strings With the new clk parenting code, clk_init_data was expanded to include .parent_hws and .parent_data, for clk drivers to specify parents without name strings of clocks. Also some macros were added for using these two items to reference clock parents. Based on that to expand macros for sprd clocks: - SPRD_*_DATA, take an array of struct clk_parent_data * as its parents which should be a combination of .fw_name (devicetree clock-names), .hw (pointers to a local struct clk_hw). - SPRD_*_HW, take a local struct clk_hw pointer, instead of a string, as its parent. - SPRD_*_FW_NAME, take a string of clock-names decleared in the device tree as the clock parent. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-6-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:28 +08:00
#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)
clk: sprd: add gate for pll clocks Some sprd's gate clocks are used to the switch of pll, which need to wait a certain time for stable after being enabled. Signed-off-by: Xiaolong Zhang <xiaolong.zhang@unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-2-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:24 +08:00
#define SPRD_PLL_SC_GATE_CLK(_struct, _name, _parent, _reg, _sc_offset, \
clk: sprd: Add macros for referencing parents without strings With the new clk parenting code, clk_init_data was expanded to include .parent_hws and .parent_data, for clk drivers to specify parents without name strings of clocks. Also some macros were added for using these two items to reference clock parents. Based on that to expand macros for sprd clocks: - SPRD_*_DATA, take an array of struct clk_parent_data * as its parents which should be a combination of .fw_name (devicetree clock-names), .hw (pointers to a local struct clk_hw). - SPRD_*_HW, take a local struct clk_hw pointer, instead of a string, as its parent. - SPRD_*_FW_NAME, take a string of clock-names decleared in the device tree as the clock parent. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-6-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:28 +08:00
_enable_mask, _flags, _gate_flags, \
_udelay) \
clk: sprd: add gate for pll clocks Some sprd's gate clocks are used to the switch of pll, which need to wait a certain time for stable after being enabled. Signed-off-by: Xiaolong Zhang <xiaolong.zhang@unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-2-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:24 +08:00
SPRD_SC_GATE_CLK_OPS_UDELAY(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, _udelay, \
&sprd_pll_sc_gate_ops)
clk: sprd: Add macros for referencing parents without strings With the new clk parenting code, clk_init_data was expanded to include .parent_hws and .parent_data, for clk drivers to specify parents without name strings of clocks. Also some macros were added for using these two items to reference clock parents. Based on that to expand macros for sprd clocks: - SPRD_*_DATA, take an array of struct clk_parent_data * as its parents which should be a combination of .fw_name (devicetree clock-names), .hw (pointers to a local struct clk_hw). - SPRD_*_HW, take a local struct clk_hw pointer, instead of a string, as its parent. - SPRD_*_FW_NAME, take a string of clock-names decleared in the device tree as the clock parent. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-6-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:28 +08:00
#define SPRD_SC_GATE_CLK_HW_OPS_UDELAY(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, \
_flags, _gate_flags, \
_udelay, _ops) \
SPRD_SC_GATE_CLK_HW_INIT_FN(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, _udelay, _ops, \
CLK_HW_INIT_HW)
#define SPRD_SC_GATE_CLK_HW_OPS(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, _ops) \
SPRD_SC_GATE_CLK_HW_OPS_UDELAY(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, \
_flags, _gate_flags, 0, _ops)
#define SPRD_SC_GATE_CLK_HW(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags) \
SPRD_SC_GATE_CLK_HW_OPS(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, &sprd_sc_gate_ops)
#define SPRD_GATE_CLK_HW(_struct, _name, _parent, _reg, \
_enable_mask, _flags, _gate_flags) \
SPRD_SC_GATE_CLK_HW_OPS(_struct, _name, _parent, _reg, 0, \
_enable_mask, _flags, _gate_flags, \
&sprd_gate_ops)
#define SPRD_PLL_SC_GATE_CLK_HW(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, _udelay) \
SPRD_SC_GATE_CLK_HW_OPS_UDELAY(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, \
_flags, _gate_flags, _udelay, \
&sprd_pll_sc_gate_ops)
#define SPRD_SC_GATE_CLK_FW_NAME_OPS_UDELAY(_struct, _name, _parent, \
_reg, _sc_offset, \
_enable_mask, _flags, \
_gate_flags, _udelay, _ops) \
SPRD_SC_GATE_CLK_HW_INIT_FN(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, _udelay, _ops, \
CLK_HW_INIT_FW_NAME)
#define SPRD_SC_GATE_CLK_FW_NAME_OPS(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, _ops) \
SPRD_SC_GATE_CLK_FW_NAME_OPS_UDELAY(_struct, _name, _parent, \
_reg, _sc_offset, \
_enable_mask, _flags, \
_gate_flags, 0, _ops)
#define SPRD_SC_GATE_CLK_FW_NAME(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags) \
SPRD_SC_GATE_CLK_FW_NAME_OPS(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, &sprd_sc_gate_ops)
#define SPRD_GATE_CLK_FW_NAME(_struct, _name, _parent, _reg, \
_enable_mask, _flags, _gate_flags) \
SPRD_SC_GATE_CLK_FW_NAME_OPS(_struct, _name, _parent, _reg, 0, \
_enable_mask, _flags, _gate_flags, \
&sprd_gate_ops)
#define SPRD_PLL_SC_GATE_CLK_FW_NAME(_struct, _name, _parent, _reg, \
_sc_offset, _enable_mask, _flags, \
_gate_flags, _udelay) \
SPRD_SC_GATE_CLK_FW_NAME_OPS_UDELAY(_struct, _name, _parent, \
_reg, _sc_offset, \
_enable_mask, _flags, \
_gate_flags, _udelay, \
&sprd_pll_sc_gate_ops)
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>
2017-12-07 20:57:06 +08:00
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;
clk: sprd: add gate for pll clocks Some sprd's gate clocks are used to the switch of pll, which need to wait a certain time for stable after being enabled. Signed-off-by: Xiaolong Zhang <xiaolong.zhang@unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-2-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-03-04 15:27:24 +08:00
extern const struct clk_ops sprd_pll_sc_gate_ops;
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>
2017-12-07 20:57:06 +08:00
#endif /* _SPRD_GATE_H_ */
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