diff options
author | Stephen Boyd | 2018-06-04 12:27:02 -0700 |
---|---|---|
committer | Stephen Boyd | 2018-06-04 12:27:02 -0700 |
commit | 43705f52946bba973eeba75f1e92cf034e0ad03c (patch) | |
tree | 9ec089c0c99f84efb3ec5db95e716a6013f4272e /drivers/clk | |
parent | 101cfc9f787d8ca22866a178f2c1684fb10f8c7a (diff) | |
parent | d85d20053e1954ede2c731f3abaf507fdaa4911a (diff) |
Merge branch 'clk-actions' into clk-next
* clk-actions:
clk: actions: Add S900 SoC clock support
clk: actions: Add pll clock support
clk: actions: Add composite clock support
clk: actions: Add fixed factor clock support
clk: actions: Add factor clock support
clk: actions: Add divider clock support
clk: actions: Add mux clock support
clk: actions: Add gate clock support
clk: actions: Add common clock driver support
dt-bindings: clock: Add Actions S900 clock bindings
Diffstat (limited to 'drivers/clk')
-rw-r--r-- | drivers/clk/Kconfig | 1 | ||||
-rw-r--r-- | drivers/clk/Makefile | 1 | ||||
-rw-r--r-- | drivers/clk/actions/Kconfig | 14 | ||||
-rw-r--r-- | drivers/clk/actions/Makefile | 12 | ||||
-rw-r--r-- | drivers/clk/actions/owl-common.c | 89 | ||||
-rw-r--r-- | drivers/clk/actions/owl-common.h | 41 | ||||
-rw-r--r-- | drivers/clk/actions/owl-composite.c | 199 | ||||
-rw-r--r-- | drivers/clk/actions/owl-composite.h | 124 | ||||
-rw-r--r-- | drivers/clk/actions/owl-divider.c | 94 | ||||
-rw-r--r-- | drivers/clk/actions/owl-divider.h | 75 | ||||
-rw-r--r-- | drivers/clk/actions/owl-factor.c | 222 | ||||
-rw-r--r-- | drivers/clk/actions/owl-factor.h | 83 | ||||
-rw-r--r-- | drivers/clk/actions/owl-fixed-factor.h | 28 | ||||
-rw-r--r-- | drivers/clk/actions/owl-gate.c | 77 | ||||
-rw-r--r-- | drivers/clk/actions/owl-gate.h | 73 | ||||
-rw-r--r-- | drivers/clk/actions/owl-mux.c | 60 | ||||
-rw-r--r-- | drivers/clk/actions/owl-mux.h | 61 | ||||
-rw-r--r-- | drivers/clk/actions/owl-pll.c | 194 | ||||
-rw-r--r-- | drivers/clk/actions/owl-pll.h | 92 | ||||
-rw-r--r-- | drivers/clk/actions/owl-s900.c | 721 |
20 files changed, 2261 insertions, 0 deletions
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig index 41492e980ef4..24a5bc3a2ddb 100644 --- a/drivers/clk/Kconfig +++ b/drivers/clk/Kconfig @@ -279,6 +279,7 @@ config COMMON_CLK_STM32H7 ---help--- Support for stm32h7 SoC family clocks +source "drivers/clk/actions/Kconfig" source "drivers/clk/bcm/Kconfig" source "drivers/clk/hisilicon/Kconfig" source "drivers/clk/imgtec/Kconfig" diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index de6d06ac790b..35896e2ae95a 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -59,6 +59,7 @@ obj-$(CONFIG_COMMON_CLK_WM831X) += clk-wm831x.o obj-$(CONFIG_COMMON_CLK_XGENE) += clk-xgene.o # please keep this section sorted lexicographically by directory path name +obj-y += actions/ obj-$(CONFIG_COMMON_CLK_AT91) += at91/ obj-$(CONFIG_ARCH_ARTPEC) += axis/ obj-$(CONFIG_ARC_PLAT_AXS10X) += axs10x/ diff --git a/drivers/clk/actions/Kconfig b/drivers/clk/actions/Kconfig new file mode 100644 index 000000000000..8854adb37847 --- /dev/null +++ b/drivers/clk/actions/Kconfig @@ -0,0 +1,14 @@ +config CLK_ACTIONS + bool "Clock driver for Actions Semi SoCs" + depends on ARCH_ACTIONS || COMPILE_TEST + default ARCH_ACTIONS + +if CLK_ACTIONS + +# SoC Drivers + +config CLK_OWL_S900 + bool "Support for the Actions Semi OWL S900 clocks" + depends on (ARM64 && ARCH_ACTIONS) || COMPILE_TEST + default ARM64 && ARCH_ACTIONS +endif diff --git a/drivers/clk/actions/Makefile b/drivers/clk/actions/Makefile new file mode 100644 index 000000000000..76e431434d10 --- /dev/null +++ b/drivers/clk/actions/Makefile @@ -0,0 +1,12 @@ +obj-$(CONFIG_CLK_ACTIONS) += clk-owl.o + +clk-owl-y += owl-common.o +clk-owl-y += owl-gate.o +clk-owl-y += owl-mux.o +clk-owl-y += owl-divider.o +clk-owl-y += owl-factor.o +clk-owl-y += owl-composite.o +clk-owl-y += owl-pll.o + +# SoC support +obj-$(CONFIG_CLK_OWL_S900) += owl-s900.o diff --git a/drivers/clk/actions/owl-common.c b/drivers/clk/actions/owl-common.c new file mode 100644 index 000000000000..61c1071b5180 --- /dev/null +++ b/drivers/clk/actions/owl-common.c @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL common clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#include <linux/of_address.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +#include "owl-common.h" + +static const struct regmap_config owl_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = 0x00cc, + .fast_io = true, +}; + +static void owl_clk_set_regmap(const struct owl_clk_desc *desc, + struct regmap *regmap) +{ + int i; + struct owl_clk_common *clks; + + for (i = 0; i < desc->num_clks; i++) { + clks = desc->clks[i]; + if (!clks) + continue; + + clks->regmap = regmap; + } +} + +int owl_clk_regmap_init(struct platform_device *pdev, + const struct owl_clk_desc *desc) +{ + void __iomem *base; + struct regmap *regmap; + struct resource *res; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + regmap = devm_regmap_init_mmio(&pdev->dev, base, &owl_regmap_config); + if (IS_ERR(regmap)) { + pr_err("failed to init regmap\n"); + return PTR_ERR(regmap); + } + + owl_clk_set_regmap(desc, regmap); + + return 0; +} + +int owl_clk_probe(struct device *dev, struct clk_hw_onecell_data *hw_clks) +{ + int i, ret; + struct clk_hw *hw; + + for (i = 0; i < hw_clks->num; i++) { + + hw = hw_clks->hws[i]; + + if (IS_ERR_OR_NULL(hw)) + continue; + + ret = devm_clk_hw_register(dev, hw); + if (ret) { + dev_err(dev, "Couldn't register clock %d - %s\n", + i, hw->init->name); + return ret; + } + } + + ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, hw_clks); + if (ret) + dev_err(dev, "Failed to add clock provider\n"); + + return ret; +} diff --git a/drivers/clk/actions/owl-common.h b/drivers/clk/actions/owl-common.h new file mode 100644 index 000000000000..4fd726ec54a6 --- /dev/null +++ b/drivers/clk/actions/owl-common.h @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL common clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#ifndef _OWL_COMMON_H_ +#define _OWL_COMMON_H_ + +#include <linux/clk-provider.h> +#include <linux/of_platform.h> +#include <linux/regmap.h> + +struct device_node; + +struct owl_clk_common { + struct regmap *regmap; + struct clk_hw hw; +}; + +struct owl_clk_desc { + struct owl_clk_common **clks; + unsigned long num_clks; + struct clk_hw_onecell_data *hw_clks; +}; + +static inline struct owl_clk_common * + hw_to_owl_clk_common(const struct clk_hw *hw) +{ + return container_of(hw, struct owl_clk_common, hw); +} + +int owl_clk_regmap_init(struct platform_device *pdev, + const struct owl_clk_desc *desc); +int owl_clk_probe(struct device *dev, struct clk_hw_onecell_data *hw_clks); + +#endif /* _OWL_COMMON_H_ */ diff --git a/drivers/clk/actions/owl-composite.c b/drivers/clk/actions/owl-composite.c new file mode 100644 index 000000000000..101706e0c66f --- /dev/null +++ b/drivers/clk/actions/owl-composite.c @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL composite clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#include <linux/clk-provider.h> +#include <linux/regmap.h> + +#include "owl-composite.h" + +static u8 owl_comp_get_parent(struct clk_hw *hw) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + + return owl_mux_helper_get_parent(&comp->common, &comp->mux_hw); +} + +static int owl_comp_set_parent(struct clk_hw *hw, u8 index) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + + return owl_mux_helper_set_parent(&comp->common, &comp->mux_hw, index); +} + +static void owl_comp_disable(struct clk_hw *hw) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + struct owl_clk_common *common = &comp->common; + + owl_gate_set(common, &comp->gate_hw, false); +} + +static int owl_comp_enable(struct clk_hw *hw) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + struct owl_clk_common *common = &comp->common; + + owl_gate_set(common, &comp->gate_hw, true); + + return 0; +} + +static int owl_comp_is_enabled(struct clk_hw *hw) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + struct owl_clk_common *common = &comp->common; + + return owl_gate_clk_is_enabled(common, &comp->gate_hw); +} + +static long owl_comp_div_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + + return owl_divider_helper_round_rate(&comp->common, &comp->rate.div_hw, + rate, parent_rate); +} + +static unsigned long owl_comp_div_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + + return owl_divider_helper_recalc_rate(&comp->common, &comp->rate.div_hw, + parent_rate); +} + +static int owl_comp_div_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + + return owl_divider_helper_set_rate(&comp->common, &comp->rate.div_hw, + rate, parent_rate); +} + +static long owl_comp_fact_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + + return owl_factor_helper_round_rate(&comp->common, + &comp->rate.factor_hw, + rate, parent_rate); +} + +static unsigned long owl_comp_fact_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + + return owl_factor_helper_recalc_rate(&comp->common, + &comp->rate.factor_hw, + parent_rate); +} + +static int owl_comp_fact_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + + return owl_factor_helper_set_rate(&comp->common, + &comp->rate.factor_hw, + rate, parent_rate); +} + +static long owl_comp_fix_fact_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw; + + return comp->fix_fact_ops->round_rate(&fix_fact_hw->hw, rate, parent_rate); +} + +static unsigned long owl_comp_fix_fact_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct owl_composite *comp = hw_to_owl_comp(hw); + struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw; + + return comp->fix_fact_ops->recalc_rate(&fix_fact_hw->hw, parent_rate); + +} + +static int owl_comp_fix_fact_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + /* + * We must report success but we can do so unconditionally because + * owl_comp_fix_fact_round_rate returns values that ensure this call is + * a nop. + */ + + return 0; +} + +const struct clk_ops owl_comp_div_ops = { + /* mux_ops */ + .get_parent = owl_comp_get_parent, + .set_parent = owl_comp_set_parent, + + /* gate_ops */ + .disable = owl_comp_disable, + .enable = owl_comp_enable, + .is_enabled = owl_comp_is_enabled, + + /* div_ops */ + .round_rate = owl_comp_div_round_rate, + .recalc_rate = owl_comp_div_recalc_rate, + .set_rate = owl_comp_div_set_rate, +}; + + +const struct clk_ops owl_comp_fact_ops = { + /* mux_ops */ + .get_parent = owl_comp_get_parent, + .set_parent = owl_comp_set_parent, + + /* gate_ops */ + .disable = owl_comp_disable, + .enable = owl_comp_enable, + .is_enabled = owl_comp_is_enabled, + + /* fact_ops */ + .round_rate = owl_comp_fact_round_rate, + .recalc_rate = owl_comp_fact_recalc_rate, + .set_rate = owl_comp_fact_set_rate, +}; + +const struct clk_ops owl_comp_fix_fact_ops = { + /* gate_ops */ + .disable = owl_comp_disable, + .enable = owl_comp_enable, + .is_enabled = owl_comp_is_enabled, + + /* fix_fact_ops */ + .round_rate = owl_comp_fix_fact_round_rate, + .recalc_rate = owl_comp_fix_fact_recalc_rate, + .set_rate = owl_comp_fix_fact_set_rate, +}; + + +const struct clk_ops owl_comp_pass_ops = { + /* mux_ops */ + .get_parent = owl_comp_get_parent, + .set_parent = owl_comp_set_parent, + + /* gate_ops */ + .disable = owl_comp_disable, + .enable = owl_comp_enable, + .is_enabled = owl_comp_is_enabled, +}; diff --git a/drivers/clk/actions/owl-composite.h b/drivers/clk/actions/owl-composite.h new file mode 100644 index 000000000000..b410ed5bf308 --- /dev/null +++ b/drivers/clk/actions/owl-composite.h @@ -0,0 +1,124 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL composite clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#ifndef _OWL_COMPOSITE_H_ +#define _OWL_COMPOSITE_H_ + +#include "owl-common.h" +#include "owl-mux.h" +#include "owl-gate.h" +#include "owl-factor.h" +#include "owl-fixed-factor.h" +#include "owl-divider.h" + +union owl_rate { + struct owl_divider_hw div_hw; + struct owl_factor_hw factor_hw; + struct clk_fixed_factor fix_fact_hw; +}; + +struct owl_composite { + struct owl_mux_hw mux_hw; + struct owl_gate_hw gate_hw; + union owl_rate rate; + + const struct clk_ops *fix_fact_ops; + + struct owl_clk_common common; +}; + +#define OWL_COMP_DIV(_struct, _name, _parent, \ + _mux, _gate, _div, _flags) \ + struct owl_composite _struct = { \ + .mux_hw = _mux, \ + .gate_hw = _gate, \ + .rate.div_hw = _div, \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT_PARENTS(_name, \ + _parent, \ + &owl_comp_div_ops,\ + _flags), \ + }, \ + } + +#define OWL_COMP_DIV_FIXED(_struct, _name, _parent, \ + _gate, _div, _flags) \ + struct owl_composite _struct = { \ + .gate_hw = _gate, \ + .rate.div_hw = _div, \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT(_name, \ + _parent, \ + &owl_comp_div_ops,\ + _flags), \ + }, \ + } + +#define OWL_COMP_FACTOR(_struct, _name, _parent, \ + _mux, _gate, _factor, _flags) \ + struct owl_composite _struct = { \ + .mux_hw = _mux, \ + .gate_hw = _gate, \ + .rate.factor_hw = _factor, \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT_PARENTS(_name, \ + _parent, \ + &owl_comp_fact_ops,\ + _flags), \ + }, \ + } + +#define OWL_COMP_FIXED_FACTOR(_struct, _name, _parent, \ + _gate, _mul, _div, _flags) \ + struct owl_composite _struct = { \ + .gate_hw = _gate, \ + .rate.fix_fact_hw.mult = _mul, \ + .rate.fix_fact_hw.div = _div, \ + .fix_fact_ops = &clk_fixed_factor_ops, \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT(_name, \ + _parent, \ + &owl_comp_fix_fact_ops,\ + _flags), \ + }, \ + } + +#define OWL_COMP_PASS(_struct, _name, _parent, \ + _mux, _gate, _flags) \ + struct owl_composite _struct = { \ + .mux_hw = _mux, \ + .gate_hw = _gate, \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT_PARENTS(_name, \ + _parent, \ + &owl_comp_pass_ops,\ + _flags), \ + }, \ + } + +static inline struct owl_composite *hw_to_owl_comp(const struct clk_hw *hw) +{ + struct owl_clk_common *common = hw_to_owl_clk_common(hw); + + return container_of(common, struct owl_composite, common); +} + +extern const struct clk_ops owl_comp_div_ops; +extern const struct clk_ops owl_comp_fact_ops; +extern const struct clk_ops owl_comp_fix_fact_ops; +extern const struct clk_ops owl_comp_pass_ops; +extern const struct clk_ops clk_fixed_factor_ops; + +#endif /* _OWL_COMPOSITE_H_ */ diff --git a/drivers/clk/actions/owl-divider.c b/drivers/clk/actions/owl-divider.c new file mode 100644 index 000000000000..cddac00fe324 --- /dev/null +++ b/drivers/clk/actions/owl-divider.c @@ -0,0 +1,94 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL divider clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#include <linux/clk-provider.h> +#include <linux/regmap.h> + +#include "owl-divider.h" + +long owl_divider_helper_round_rate(struct owl_clk_common *common, + const struct owl_divider_hw *div_hw, + unsigned long rate, + unsigned long *parent_rate) +{ + return divider_round_rate(&common->hw, rate, parent_rate, + div_hw->table, div_hw->width, + div_hw->div_flags); +} + +static long owl_divider_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct owl_divider *div = hw_to_owl_divider(hw); + + return owl_divider_helper_round_rate(&div->common, &div->div_hw, + rate, parent_rate); +} + +unsigned long owl_divider_helper_recalc_rate(struct owl_clk_common *common, + const struct owl_divider_hw *div_hw, + unsigned long parent_rate) +{ + unsigned long val; + unsigned int reg; + + regmap_read(common->regmap, div_hw->reg, ®); + val = reg >> div_hw->shift; + val &= (1 << div_hw->width) - 1; + + return divider_recalc_rate(&common->hw, parent_rate, + val, div_hw->table, + div_hw->div_flags, + div_hw->width); +} + +static unsigned long owl_divider_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct owl_divider *div = hw_to_owl_divider(hw); + + return owl_divider_helper_recalc_rate(&div->common, + &div->div_hw, parent_rate); +} + +int owl_divider_helper_set_rate(const struct owl_clk_common *common, + const struct owl_divider_hw *div_hw, + unsigned long rate, + unsigned long parent_rate) +{ + unsigned long val; + unsigned int reg; + + val = divider_get_val(rate, parent_rate, div_hw->table, + div_hw->width, 0); + + regmap_read(common->regmap, div_hw->reg, ®); + reg &= ~GENMASK(div_hw->width + div_hw->shift - 1, div_hw->shift); + + regmap_write(common->regmap, div_hw->reg, + reg | (val << div_hw->shift)); + + return 0; +} + +static int owl_divider_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct owl_divider *div = hw_to_owl_divider(hw); + + return owl_divider_helper_set_rate(&div->common, &div->div_hw, + rate, parent_rate); +} + +const struct clk_ops owl_divider_ops = { + .recalc_rate = owl_divider_recalc_rate, + .round_rate = owl_divider_round_rate, + .set_rate = owl_divider_set_rate, +}; diff --git a/drivers/clk/actions/owl-divider.h b/drivers/clk/actions/owl-divider.h new file mode 100644 index 000000000000..92d3e3d23967 --- /dev/null +++ b/drivers/clk/actions/owl-divider.h @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL divider clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#ifndef _OWL_DIVIDER_H_ +#define _OWL_DIVIDER_H_ + +#include "owl-common.h" + +struct owl_divider_hw { + u32 reg; + u8 shift; + u8 width; + u8 div_flags; + struct clk_div_table *table; +}; + +struct owl_divider { + struct owl_divider_hw div_hw; + struct owl_clk_common common; +}; + +#define OWL_DIVIDER_HW(_reg, _shift, _width, _div_flags, _table) \ + { \ + .reg = _reg, \ + .shift = _shift, \ + .width = _width, \ + .div_flags = _div_flags, \ + .table = _table, \ + } + +#define OWL_DIVIDER(_struct, _name, _parent, _reg, \ + _shift, _width, _table, _div_flags, _flags) \ + struct owl_divider _struct = { \ + .div_hw = OWL_DIVIDER_HW(_reg, _shift, _width, \ + _div_flags, _table), \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT(_name, \ + _parent, \ + &owl_divider_ops, \ + _flags), \ + }, \ + } + +static inline struct owl_divider *hw_to_owl_divider(const struct clk_hw *hw) +{ + struct owl_clk_common *common = hw_to_owl_clk_common(hw); + + return container_of(common, struct owl_divider, common); +} + +long owl_divider_helper_round_rate(struct owl_clk_common *common, + const struct owl_divider_hw *div_hw, + unsigned long rate, + unsigned long *parent_rate); + +unsigned long owl_divider_helper_recalc_rate(struct owl_clk_common *common, + const struct owl_divider_hw *div_hw, + unsigned long parent_rate); + +int owl_divider_helper_set_rate(const struct owl_clk_common *common, + const struct owl_divider_hw *div_hw, + unsigned long rate, + unsigned long parent_rate); + +extern const struct clk_ops owl_divider_ops; + +#endif /* _OWL_DIVIDER_H_ */ diff --git a/drivers/clk/actions/owl-factor.c b/drivers/clk/actions/owl-factor.c new file mode 100644 index 000000000000..317d4a9e112e --- /dev/null +++ b/drivers/clk/actions/owl-factor.c @@ -0,0 +1,222 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL factor clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#include <linux/clk-provider.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +#include "owl-factor.h" + +static unsigned int _get_table_maxval(const struct clk_factor_table *table) +{ + unsigned int maxval = 0; + const struct clk_factor_table *clkt; + + for (clkt = table; clkt->div; clkt++) + if (clkt->val > maxval) + maxval = clkt->val; + return maxval; +} + +static int _get_table_div_mul(const struct clk_factor_table *table, + unsigned int val, unsigned int *mul, unsigned int *div) +{ + const struct clk_factor_table *clkt; + + for (clkt = table; clkt->div; clkt++) { + if (clkt->val == val) { + *mul = clkt->mul; + *div = clkt->div; + return 1; + } + } + + return 0; +} + +static unsigned int _get_table_val(const struct clk_factor_table *table, + unsigned long rate, unsigned long parent_rate) +{ + const struct clk_factor_table *clkt; + int val = -1; + u64 calc_rate; + + for (clkt = table; clkt->div; clkt++) { + calc_rate = parent_rate * clkt->mul; + do_div(calc_rate, clkt->div); + + if ((unsigned long)calc_rate <= rate) { + val = clkt->val; + break; + } + } + + if (val == -1) + val = _get_table_maxval(table); + + return val; +} + +static int clk_val_best(struct clk_hw *hw, unsigned long rate, + unsigned long *best_parent_rate) +{ + struct owl_factor *factor = hw_to_owl_factor(hw); + struct owl_factor_hw *factor_hw = &factor->factor_hw; + const struct clk_factor_table *clkt = factor_hw->table; + unsigned long parent_rate, try_parent_rate, best = 0, cur_rate; + unsigned long parent_rate_saved = *best_parent_rate; + int bestval = 0; + + if (!rate) + rate = 1; + + if (!(clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT)) { + parent_rate = *best_parent_rate; + bestval = _get_table_val(clkt, rate, parent_rate); + return bestval; + } + + for (clkt = factor_hw->table; clkt->div; clkt++) { + try_parent_rate = rate * clkt->div / clkt->mul; + + if (try_parent_rate == parent_rate_saved) { + pr_debug("%s: [%d %d %d] found try_parent_rate %ld\n", + __func__, clkt->val, clkt->mul, clkt->div, + try_parent_rate); + /* + * It's the most ideal case if the requested rate can be + * divided from parent clock without any need to change + * parent rate, so return the divider immediately. + */ + *best_parent_rate = parent_rate_saved; + return clkt->val; + } + + parent_rate = clk_hw_round_rate(clk_hw_get_parent(hw), + try_parent_rate); + cur_rate = DIV_ROUND_UP(parent_rate, clkt->div) * clkt->mul; + if (cur_rate <= rate && cur_rate > best) { + bestval = clkt->val; + best = cur_rate; + *best_parent_rate = parent_rate; + } + } + + if (!bestval) { + bestval = _get_table_maxval(clkt); + *best_parent_rate = clk_hw_round_rate( + clk_hw_get_parent(hw), 1); + } + + return bestval; +} + +long owl_factor_helper_round_rate(struct owl_clk_common *common, + const struct owl_factor_hw *factor_hw, + unsigned long rate, + unsigned long *parent_rate) +{ + const struct clk_factor_table *clkt = factor_hw->table; + unsigned int val, mul = 0, div = 1; + + val = clk_val_best(&common->hw, rate, parent_rate); + _get_table_div_mul(clkt, val, &mul, &div); + + return *parent_rate * mul / div; +} + +static long owl_factor_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct owl_factor *factor = hw_to_owl_factor(hw); + struct owl_factor_hw *factor_hw = &factor->factor_hw; + + return owl_factor_helper_round_rate(&factor->common, factor_hw, + rate, parent_rate); +} + +unsigned long owl_factor_helper_recalc_rate(struct owl_clk_common *common, + const struct owl_factor_hw *factor_hw, + unsigned long parent_rate) +{ + const struct clk_factor_table *clkt = factor_hw->table; + unsigned long long int rate; + u32 reg, val, mul, div; + + div = 0; + mul = 0; + + regmap_read(common->regmap, factor_hw->reg, ®); + + val = reg >> factor_hw->shift; + val &= div_mask(factor_hw); + + _get_table_div_mul(clkt, val, &mul, &div); + if (!div) { + WARN(!(factor_hw->fct_flags & CLK_DIVIDER_ALLOW_ZERO), + "%s: Zero divisor and CLK_DIVIDER_ALLOW_ZERO not set\n", + __clk_get_name(common->hw.clk)); + return parent_rate; + } + + rate = (unsigned long long int)parent_rate * mul; + do_div(rate, div); + + return rate; +} + +static unsigned long owl_factor_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct owl_factor *factor = hw_to_owl_factor(hw); + struct owl_factor_hw *factor_hw = &factor->factor_hw; + struct owl_clk_common *common = &factor->common; + + return owl_factor_helper_recalc_rate(common, factor_hw, parent_rate); +} + +int owl_factor_helper_set_rate(const struct owl_clk_common *common, + const struct owl_factor_hw *factor_hw, + unsigned long rate, + unsigned long parent_rate) +{ + u32 val, reg; + + val = _get_table_val(factor_hw->table, rate, parent_rate); + + if (val > div_mask(factor_hw)) + val = div_mask(factor_hw); + + regmap_read(common->regmap, factor_hw->reg, ®); + + reg &= ~(div_mask(factor_hw) << factor_hw->shift); + reg |= val << factor_hw->shift; + + regmap_write(common->regmap, factor_hw->reg, reg); + + return 0; +} + +static int owl_factor_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct owl_factor *factor = hw_to_owl_factor(hw); + struct owl_factor_hw *factor_hw = &factor->factor_hw; + struct owl_clk_common *common = &factor->common; + + return owl_factor_helper_set_rate(common, factor_hw, + rate, parent_rate); +} + +const struct clk_ops owl_factor_ops = { + .round_rate = owl_factor_round_rate, + .recalc_rate = owl_factor_recalc_rate, + .set_rate = owl_factor_set_rate, +}; diff --git a/drivers/clk/actions/owl-factor.h b/drivers/clk/actions/owl-factor.h new file mode 100644 index 000000000000..f1a7ffe896e1 --- /dev/null +++ b/drivers/clk/actions/owl-factor.h @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL factor clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#ifndef _OWL_FACTOR_H_ +#define _OWL_FACTOR_H_ + +#include "owl-common.h" + +struct clk_factor_table { + unsigned int val; + unsigned int mul; + unsigned int div; +}; + +struct owl_factor_hw { + u32 reg; + u8 shift; + u8 width; + u8 fct_flags; + struct clk_factor_table *table; +}; + +struct owl_factor { + struct owl_factor_hw factor_hw; + struct owl_clk_common common; +}; + +#define OWL_FACTOR_HW(_reg, _shift, _width, _fct_flags, _table) \ + { \ + .reg = _reg, \ + .shift = _shift, \ + .width = _width, \ + .fct_flags = _fct_flags, \ + .table = _table, \ + } + +#define OWL_FACTOR(_struct, _name, _parent, _reg, \ + _shift, _width, _table, _fct_flags, _flags) \ + struct owl_factor _struct = { \ + .factor_hw = OWL_FACTOR_HW(_reg, _shift, \ + _width, _fct_flags, _table), \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT(_name, \ + _parent, \ + &owl_factor_ops, \ + _flags), \ + }, \ + } + +#define div_mask(d) ((1 << ((d)->width)) - 1) + +static inline struct owl_factor *hw_to_owl_factor(const struct clk_hw *hw) +{ + struct owl_clk_common *common = hw_to_owl_clk_common(hw); + + return container_of(common, struct owl_factor, common); +} + +long owl_factor_helper_round_rate(struct owl_clk_common *common, + const struct owl_factor_hw *factor_hw, + unsigned long rate, + unsigned long *parent_rate); + +unsigned long owl_factor_helper_recalc_rate(struct owl_clk_common *common, + const struct owl_factor_hw *factor_hw, + unsigned long parent_rate); + +int owl_factor_helper_set_rate(const struct owl_clk_common *common, + const struct owl_factor_hw *factor_hw, + unsigned long rate, + unsigned long parent_rate); + +extern const struct clk_ops owl_factor_ops; + +#endif /* _OWL_FACTOR_H_ */ diff --git a/drivers/clk/actions/owl-fixed-factor.h b/drivers/clk/actions/owl-fixed-factor.h new file mode 100644 index 000000000000..cc9fe36c0964 --- /dev/null +++ b/drivers/clk/actions/owl-fixed-factor.h @@ -0,0 +1,28 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL fixed factor clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#ifndef _OWL_FIXED_FACTOR_H_ +#define _OWL_FIXED_FACTOR_H_ + +#include "owl-common.h" + +#define OWL_FIX_FACT(_struct, _name, _parent, _mul, _div, _flags) \ + struct clk_fixed_factor _struct = { \ + .mult = _mul, \ + .div = _div, \ + .hw.init = CLK_HW_INIT(_name, \ + _parent, \ + &clk_fixed_factor_ops, \ + _flags), \ + } + +extern const struct clk_ops clk_fixed_factor_ops; + +#endif /* _OWL_FIXED_FACTOR_H_ */ diff --git a/drivers/clk/actions/owl-gate.c b/drivers/clk/actions/owl-gate.c new file mode 100644 index 000000000000..f11500ba46a7 --- /dev/null +++ b/drivers/clk/actions/owl-gate.c @@ -0,0 +1,77 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL gate clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#include <linux/clk-provider.h> +#include <linux/regmap.h> + +#include "owl-gate.h" + +void owl_gate_set(const struct owl_clk_common *common, + const struct owl_gate_hw *gate_hw, bool enable) +{ + int set = gate_hw->gate_flags & CLK_GATE_SET_TO_DISABLE ? 1 : 0; + u32 reg; + + set ^= enable; + + regmap_read(common->regmap, gate_hw->reg, ®); + + if (set) + reg |= BIT(gate_hw->bit_idx); + else + reg &= ~BIT(gate_hw->bit_idx); + + regmap_write(common->regmap, gate_hw->reg, reg); +} + +static void owl_gate_disable(struct clk_hw *hw) +{ + struct owl_gate *gate = hw_to_owl_gate(hw); + struct owl_clk_common *common = &gate->common; + + owl_gate_set(common, &gate->gate_hw, false); +} + +static int owl_gate_enable(struct clk_hw *hw) +{ + struct owl_gate *gate = hw_to_owl_gate(hw); + struct owl_clk_common *common = &gate->common; + + owl_gate_set(common, &gate->gate_hw, true); + + return 0; +} + +int owl_gate_clk_is_enabled(const struct owl_clk_common *common, + const struct owl_gate_hw *gate_hw) +{ + u32 reg; + + regmap_read(common->regmap, gate_hw->reg, ®); + + if (gate_hw->gate_flags & CLK_GATE_SET_TO_DISABLE) + reg ^= BIT(gate_hw->bit_idx); + + return !!(reg & BIT(gate_hw->bit_idx)); +} + +static int owl_gate_is_enabled(struct clk_hw *hw) +{ + struct owl_gate *gate = hw_to_owl_gate(hw); + struct owl_clk_common *common = &gate->common; + + return owl_gate_clk_is_enabled(common, &gate->gate_hw); +} + +const struct clk_ops owl_gate_ops = { + .disable = owl_gate_disable, + .enable = owl_gate_enable, + .is_enabled = owl_gate_is_enabled, +}; diff --git a/drivers/clk/actions/owl-gate.h b/drivers/clk/actions/owl-gate.h new file mode 100644 index 000000000000..c2d61ceebce2 --- /dev/null +++ b/drivers/clk/actions/owl-gate.h @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL gate clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#ifndef _OWL_GATE_H_ +#define _OWL_GATE_H_ + +#include "owl-common.h" + +struct owl_gate_hw { + u32 reg; + u8 bit_idx; + u8 gate_flags; +}; + +struct owl_gate { + struct owl_gate_hw gate_hw; + struct owl_clk_common common; +}; + +#define OWL_GATE_HW(_reg, _bit_idx, _gate_flags) \ + { \ + .reg = _reg, \ + .bit_idx = _bit_idx, \ + .gate_flags = _gate_flags, \ + } + +#define OWL_GATE(_struct, _name, _parent, _reg, \ + _bit_idx, _gate_flags, _flags) \ + struct owl_gate _struct = { \ + .gate_hw = OWL_GATE_HW(_reg, _bit_idx, _gate_flags), \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT(_name, \ + _parent, \ + &owl_gate_ops, \ + _flags), \ + } \ + } \ + +#define OWL_GATE_NO_PARENT(_struct, _name, _reg, \ + _bit_idx, _gate_flags, _flags) \ + struct owl_gate _struct = { \ + .gate_hw = OWL_GATE_HW(_reg, _bit_idx, _gate_flags), \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT_NO_PARENT(_name, \ + &owl_gate_ops, \ + _flags), \ + }, \ + } \ + +static inline struct owl_gate *hw_to_owl_gate(const struct clk_hw *hw) +{ + struct owl_clk_common *common = hw_to_owl_clk_common(hw); + + return container_of(common, struct owl_gate, common); +} + +void owl_gate_set(const struct owl_clk_common *common, + const struct owl_gate_hw *gate_hw, bool enable); +int owl_gate_clk_is_enabled(const struct owl_clk_common *common, + const struct owl_gate_hw *gate_hw); + +extern const struct clk_ops owl_gate_ops; + +#endif /* _OWL_GATE_H_ */ diff --git a/drivers/clk/actions/owl-mux.c b/drivers/clk/actions/owl-mux.c new file mode 100644 index 000000000000..f9c6cf2540e4 --- /dev/null +++ b/drivers/clk/actions/owl-mux.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL mux clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#include <linux/clk-provider.h> +#include <linux/regmap.h> + +#include "owl-mux.h" + +u8 owl_mux_helper_get_parent(const struct owl_clk_common *common, + const struct owl_mux_hw *mux_hw) +{ + u32 reg; + u8 parent; + + regmap_read(common->regmap, mux_hw->reg, ®); + parent = reg >> mux_hw->shift; + parent &= BIT(mux_hw->width) - 1; + + return parent; +} + +static u8 owl_mux_get_parent(struct clk_hw *hw) +{ + struct owl_mux *mux = hw_to_owl_mux(hw); + + return owl_mux_helper_get_parent(&mux->common, &mux->mux_hw); +} + +int owl_mux_helper_set_parent(const struct owl_clk_common *common, + struct owl_mux_hw *mux_hw, u8 index) +{ + u32 reg; + + regmap_read(common->regmap, mux_hw->reg, ®); + reg &= ~GENMASK(mux_hw->width + mux_hw->shift - 1, mux_hw->shift); + regmap_write(common->regmap, mux_hw->reg, + reg | (index << mux_hw->shift)); + + return 0; +} + +static int owl_mux_set_parent(struct clk_hw *hw, u8 index) +{ + struct owl_mux *mux = hw_to_owl_mux(hw); + + return owl_mux_helper_set_parent(&mux->common, &mux->mux_hw, index); +} + +const struct clk_ops owl_mux_ops = { + .get_parent = owl_mux_get_parent, + .set_parent = owl_mux_set_parent, + .determine_rate = __clk_mux_determine_rate, +}; diff --git a/drivers/clk/actions/owl-mux.h b/drivers/clk/actions/owl-mux.h new file mode 100644 index 000000000000..834284c8c3ae --- /dev/null +++ b/drivers/clk/actions/owl-mux.h @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL mux clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#ifndef _OWL_MUX_H_ +#define _OWL_MUX_H_ + +#include "owl-common.h" + +struct owl_mux_hw { + u32 reg; + u8 shift; + u8 width; +}; + +struct owl_mux { + struct owl_mux_hw mux_hw; + struct owl_clk_common common; +}; + +#define OWL_MUX_HW(_reg, _shift, _width) \ + { \ + .reg = _reg, \ + .shift = _shift, \ + .width = _width, \ + } + +#define OWL_MUX(_struct, _name, _parents, _reg, \ + _shift, _width, _flags) \ + struct owl_mux _struct = { \ + .mux_hw = OWL_MUX_HW(_reg, _shift, _width), \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT_PARENTS(_name, \ + _parents, \ + &owl_mux_ops, \ + _flags), \ + }, \ + } + +static inline struct owl_mux *hw_to_owl_mux(const struct clk_hw *hw) +{ + struct owl_clk_common *common = hw_to_owl_clk_common(hw); + + return container_of(common, struct owl_mux, common); +} + +u8 owl_mux_helper_get_parent(const struct owl_clk_common *common, + const struct owl_mux_hw *mux_hw); +int owl_mux_helper_set_parent(const struct owl_clk_common *common, + struct owl_mux_hw *mux_hw, u8 index); + +extern const struct clk_ops owl_mux_ops; + +#endif /* _OWL_MUX_H_ */ diff --git a/drivers/clk/actions/owl-pll.c b/drivers/clk/actions/owl-pll.c new file mode 100644 index 000000000000..058e06d7099f --- /dev/null +++ b/drivers/clk/actions/owl-pll.c @@ -0,0 +1,194 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL pll clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/delay.h> + +#include "owl-pll.h" + +static u32 owl_pll_calculate_mul(struct owl_pll_hw *pll_hw, unsigned long rate) +{ + u32 mul; + + mul = DIV_ROUND_CLOSEST(rate, pll_hw->bfreq); + if (mul < pll_hw->min_mul) + mul = pll_hw->min_mul; + else if (mul > pll_hw->max_mul) + mul = pll_hw->max_mul; + + return mul &= mul_mask(pll_hw); +} + +static unsigned long _get_table_rate(const struct clk_pll_table *table, + unsigned int val) +{ + const struct clk_pll_table *clkt; + + for (clkt = table; clkt->rate; clkt++) + if (clkt->val == val) + return clkt->rate; + + return 0; +} + +static const struct clk_pll_table *_get_pll_table( + const struct clk_pll_table *table, unsigned long rate) +{ + const struct clk_pll_table *clkt; + + for (clkt = table; clkt->rate; clkt++) { + if (clkt->rate == rate) { + table = clkt; + break; + } else if (clkt->rate < rate) + table = clkt; + } + + return table; +} + +static long owl_pll_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct owl_pll *pll = hw_to_owl_pll(hw); + struct owl_pll_hw *pll_hw = &pll->pll_hw; + const struct clk_pll_table *clkt; + u32 mul; + + if (pll_hw->table) { + clkt = _get_pll_table(pll_hw->table, rate); + return clkt->rate; + } + + /* fixed frequency */ + if (pll_hw->width == 0) + return pll_hw->bfreq; + + mul = owl_pll_calculate_mul(pll_hw, rate); + + return pll_hw->bfreq * mul; +} + +static unsigned long owl_pll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct owl_pll *pll = hw_to_owl_pll(hw); + struct owl_pll_hw *pll_hw = &pll->pll_hw; + const struct owl_clk_common *common = &pll->common; + u32 val; + + if (pll_hw->table) { + regmap_read(common->regmap, pll_hw->reg, &val); + + val = val >> pll_hw->shift; + val &= mul_mask(pll_hw); + + return _get_table_rate(pll_hw->table, val); + } + + /* fixed frequency */ + if (pll_hw->width == 0) + return pll_hw->bfreq; + + regmap_read(common->regmap, pll_hw->reg, &val); + + val = val >> pll_hw->shift; + val &= mul_mask(pll_hw); + + return pll_hw->bfreq * val; +} + +static int owl_pll_is_enabled(struct clk_hw *hw) +{ + struct owl_pll *pll = hw_to_owl_pll(hw); + struct owl_pll_hw *pll_hw = &pll->pll_hw; + const struct owl_clk_common *common = &pll->common; + u32 reg; + + regmap_read(common->regmap, pll_hw->reg, ®); + + return !!(reg & BIT(pll_hw->bit_idx)); +} + +static void owl_pll_set(const struct owl_clk_common *common, + const struct owl_pll_hw *pll_hw, bool enable) +{ + u32 reg; + + regmap_read(common->regmap, pll_hw->reg, ®); + + if (enable) + reg |= BIT(pll_hw->bit_idx); + else + reg &= ~BIT(pll_hw->bit_idx); + + regmap_write(common->regmap, pll_hw->reg, reg); +} + +static int owl_pll_enable(struct clk_hw *hw) +{ + struct owl_pll *pll = hw_to_owl_pll(hw); + const struct owl_clk_common *common = &pll->common; + + owl_pll_set(common, &pll->pll_hw, true); + + return 0; +} + +static void owl_pll_disable(struct clk_hw *hw) +{ + struct owl_pll *pll = hw_to_owl_pll(hw); + const struct owl_clk_common *common = &pll->common; + + owl_pll_set(common, &pll->pll_hw, false); +} + +static int owl_pll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct owl_pll *pll = hw_to_owl_pll(hw); + struct owl_pll_hw *pll_hw = &pll->pll_hw; + const struct owl_clk_common *common = &pll->common; + const struct clk_pll_table *clkt; + u32 val, reg; + + /* fixed frequency */ + if (pll_hw->width == 0) + return 0; + + if (pll_hw->table) { + clkt = _get_pll_table(pll_hw->table, rate); + val = clkt->val; + } else { + val = owl_pll_calculate_mul(pll_hw, rate); + } + + regmap_read(common->regmap, pll_hw->reg, ®); + + reg &= ~mul_mask(pll_hw); + reg |= val << pll_hw->shift; + + regmap_write(common->regmap, pll_hw->reg, reg); + + udelay(PLL_STABILITY_WAIT_US); + + return 0; +} + +const struct clk_ops owl_pll_ops = { + .enable = owl_pll_enable, + .disable = owl_pll_disable, + .is_enabled = owl_pll_is_enabled, + .round_rate = owl_pll_round_rate, + .recalc_rate = owl_pll_recalc_rate, + .set_rate = owl_pll_set_rate, +}; diff --git a/drivers/clk/actions/owl-pll.h b/drivers/clk/actions/owl-pll.h new file mode 100644 index 000000000000..0aae30abd5dc --- /dev/null +++ b/drivers/clk/actions/owl-pll.h @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL pll clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#ifndef _OWL_PLL_H_ +#define _OWL_PLL_H_ + +#include "owl-common.h" + +/* last entry should have rate = 0 */ +struct clk_pll_table { + unsigned int val; + unsigned long rate; +}; + +struct owl_pll_hw { + u32 reg; + u32 bfreq; + u8 bit_idx; + u8 shift; + u8 width; + u8 min_mul; + u8 max_mul; + const struct clk_pll_table *table; +}; + +struct owl_pll { + struct owl_pll_hw pll_hw; + struct owl_clk_common common; +}; + +#define OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \ + _width, _min_mul, _max_mul, _table) \ + { \ + .reg = _reg, \ + .bfreq = _bfreq, \ + .bit_idx = _bit_idx, \ + .shift = _shift, \ + .width = _width, \ + .min_mul = _min_mul, \ + .max_mul = _max_mul, \ + .table = _table, \ + } + +#define OWL_PLL(_struct, _name, _parent, _reg, _bfreq, _bit_idx, \ + _shift, _width, _min_mul, _max_mul, _table, _flags) \ + struct owl_pll _struct = { \ + .pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \ + _width, _min_mul, \ + _max_mul, _table), \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT(_name, \ + _parent, \ + &owl_pll_ops, \ + _flags), \ + }, \ + } + +#define OWL_PLL_NO_PARENT(_struct, _name, _reg, _bfreq, _bit_idx, \ + _shift, _width, _min_mul, _max_mul, _table, _flags) \ + struct owl_pll _struct = { \ + .pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \ + _width, _min_mul, \ + _max_mul, _table), \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT_NO_PARENT(_name, \ + &owl_pll_ops, \ + _flags), \ + }, \ + } + +#define mul_mask(m) ((1 << ((m)->width)) - 1) +#define PLL_STABILITY_WAIT_US (50) + +static inline struct owl_pll *hw_to_owl_pll(const struct clk_hw *hw) +{ + struct owl_clk_common *common = hw_to_owl_clk_common(hw); + + return container_of(common, struct owl_pll, common); +} + +extern const struct clk_ops owl_pll_ops; + +#endif /* _OWL_PLL_H_ */ diff --git a/drivers/clk/actions/owl-s900.c b/drivers/clk/actions/owl-s900.c new file mode 100644 index 000000000000..7f60ed6afe63 --- /dev/null +++ b/drivers/clk/actions/owl-s900.c @@ -0,0 +1,721 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL S900 SoC clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu <liuwei@actions-semi.com> +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + +#include <linux/clk-provider.h> +#include <linux/platform_device.h> + +#include "owl-common.h" +#include "owl-composite.h" +#include "owl-divider.h" +#include "owl-factor.h" +#include "owl-fixed-factor.h" +#include "owl-gate.h" +#include "owl-mux.h" +#include "owl-pll.h" + +#include <dt-bindings/clock/actions,s900-cmu.h> + +#define CMU_COREPLL (0x0000) +#define CMU_DEVPLL (0x0004) +#define CMU_DDRPLL (0x0008) +#define CMU_NANDPLL (0x000C) +#define CMU_DISPLAYPLL (0x0010) +#define CMU_AUDIOPLL (0x0014) +#define CMU_TVOUTPLL (0x0018) +#define CMU_BUSCLK (0x001C) +#define CMU_SENSORCLK (0x0020) +#define CMU_LCDCLK (0x0024) +#define CMU_DSICLK (0x0028) +#define CMU_CSICLK (0x002C) +#define CMU_DECLK (0x0030) +#define CMU_BISPCLK (0x0034) +#define CMU_IMXCLK (0x0038) +#define CMU_HDECLK (0x003C) +#define CMU_VDECLK (0x0040) +#define CMU_VCECLK (0x0044) +#define CMU_NANDCCLK (0x004C) +#define CMU_SD0CLK (0x0050) +#define CMU_SD1CLK (0x0054) +#define CMU_SD2CLK (0x0058) +#define CMU_UART0CLK (0x005C) +#define CMU_UART1CLK (0x0060) +#define CMU_UART2CLK (0x0064) +#define CMU_PWM0CLK (0x0070) +#define CMU_PWM1CLK (0x0074) +#define CMU_PWM2CLK (0x0078) +#define CMU_PWM3CLK (0x007C) +#define CMU_USBPLL (0x0080) +#define CMU_ASSISTPLL (0x0084) +#define CMU_EDPCLK (0x0088) +#define CMU_GPU3DCLK (0x0090) +#define CMU_CORECTL (0x009C) +#define CMU_DEVCLKEN0 (0x00A0) +#define CMU_DEVCLKEN1 (0x00A4) +#define CMU_DEVRST0 (0x00A8) +#define CMU_DEVRST1 (0x00AC) +#define CMU_UART3CLK (0x00B0) +#define CMU_UART4CLK (0x00B4) +#define CMU_UART5CLK (0x00B8) +#define CMU_UART6CLK (0x00BC) +#define CMU_TLSCLK (0x00C0) +#define CMU_SD3CLK (0x00C4) +#define CMU_PWM4CLK (0x00C8) +#define CMU_PWM5CLK (0x00CC) + +static struct clk_pll_table clk_audio_pll_table[] = { + { 0, 45158400 }, { 1, 49152000 }, + { 0, 0 }, +}; + +static struct clk_pll_table clk_edp_pll_table[] = { + { 0, 810000000 }, { 1, 135000000 }, { 2, 270000000 }, + { 0, 0 }, +}; + +/* pll clocks */ +static OWL_PLL_NO_PARENT(core_pll_clk, "core_pll_clk", CMU_COREPLL, 24000000, 9, 0, 8, 5, 107, NULL, CLK_IGNORE_UNUSED); +static OWL_PLL_NO_PARENT(dev_pll_clk, "dev_pll_clk", CMU_DEVPLL, 6000000, 8, 0, 8, 20, 180, NULL, CLK_IGNORE_UNUSED); +static OWL_PLL_NO_PARENT(ddr_pll_clk, "ddr_pll_clk", CMU_DDRPLL, 24000000, 8, 0, 8, 5, 45, NULL, CLK_IGNORE_UNUSED); +static OWL_PLL_NO_PARENT(nand_pll_clk, "nand_pll_clk", CMU_NANDPLL, 6000000, 8, 0, 8, 4, 100, NULL, CLK_IGNORE_UNUSED); +static OWL_PLL_NO_PARENT(display_pll_clk, "display_pll_clk", CMU_DISPLAYPLL, 6000000, 8, 0, 8, 20, 180, NULL, CLK_IGNORE_UNUSED); +static OWL_PLL_NO_PARENT(assist_pll_clk, "assist_pll_clk", CMU_ASSISTPLL, 500000000, 0, 0, 0, 0, 0, NULL, CLK_IGNORE_UNUSED); +static OWL_PLL_NO_PARENT(audio_pll_clk, "audio_pll_clk", CMU_AUDIOPLL, 0, 4, 0, 1, 0, 0, clk_audio_pll_table, CLK_IGNORE_UNUSED); +static OWL_PLL(edp_pll_clk, "edp_pll_clk", "edp24M_clk", CMU_EDPCLK, 0, 9, 0, 2, 0, 0, clk_edp_pll_table, CLK_IGNORE_UNUSED); + +static const char *cpu_clk_mux_p[] = { "losc", "hosc", "core_pll_clk", }; +static const char *dev_clk_p[] = { "hosc", "dev_pll_clk", }; +static const char *noc_clk_mux_p[] = { "dev_clk", "assist_pll_clk", }; +static const char *dmm_clk_mux_p[] = { "dev_clk", "nand_pll_clk", "assist_pll_clk", "ddr_clk_src", }; +static const char *bisp_clk_mux_p[] = { "assist_pll_clk", "dev_clk", }; +static const char *csi_clk_mux_p[] = { "display_pll_clk", "dev_clk", }; +static const char *de_clk_mux_p[] = { "assist_pll_clk", "dev_clk", }; +static const char *gpu_clk_mux_p[] = { "dev_clk", "display_pll_clk", "ddr_clk_src", }; +static const char *hde_clk_mux_p[] = { "dev_clk", "display_pll_clk", "ddr_clk_src", }; +static const char *imx_clk_mux_p[] = { "assist_pll_clk", "dev_clk", }; +static const char *lcd_clk_mux_p[] = { "display_pll_clk", "nand_pll_clk", }; +static const char *nand_clk_mux_p[] = { "dev_clk", "nand_pll_clk", }; +static const char *sd_clk_mux_p[] = { "dev_clk", "nand_pll_clk", }; +static const char *sensor_clk_mux_p[] = { "hosc", "bisp_clk", }; +static const char *uart_clk_mux_p[] = { "hosc", "dev_pll_clk", }; +static const char *vce_clk_mux_p[] = { "dev_clk", "display_pll_clk", "assist_pll_clk", "ddr_clk_src", }; +static const char *i2s_clk_mux_p[] = { "audio_pll_clk", }; +static const char *edp_clk_mux_p[] = { "assist_pll_clk", "display_pll_clk", }; + +/* mux clocks */ +static OWL_MUX(cpu_clk, "cpu_clk", cpu_clk_mux_p, CMU_BUSCLK, 0, 2, CLK_SET_RATE_PARENT); +static OWL_MUX(dev_clk, "dev_clk", dev_clk_p, CMU_DEVPLL, 12, 1, CLK_SET_RATE_PARENT); +static OWL_MUX(noc_clk_mux, "noc_clk_mux", noc_clk_mux_p, CMU_BUSCLK, 7, 1, CLK_SET_RATE_PARENT); + +static struct clk_div_table nand_div_table[] = { + { 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 6 }, + { 4, 8 }, { 5, 10 }, { 6, 12 }, { 7, 14 }, + { 8, 16 }, { 9, 18 }, { 10, 20 }, { 11, 22 }, + { 12, 24 }, { 13, 26 }, { 14, 28 }, { 15, 30 }, + { 0, 0 }, +}; + +static struct clk_div_table apb_div_table[] = { + { 1, 2 }, { 2, 3 }, { 3, 4 }, + { 0, 0 }, +}; + +static struct clk_div_table eth_mac_div_table[] = { + { 0, 2 }, { 1, 4 }, + { 0, 0 }, +}; + +static struct clk_div_table rmii_ref_div_table[] = { + { 0, 4 }, { 1, 10 }, + { 0, 0 }, +}; + +static struct clk_div_table usb3_mac_div_table[] = { + { 1, 2 }, { 2, 3 }, { 3, 4 }, + { 0, 8 }, +}; + +static struct clk_div_table i2s_div_table[] = { + { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 }, + { 4, 6 }, { 5, 8 }, { 6, 12 }, { 7, 16 }, + { 8, 24 }, + { 0, 0 }, +}; + +static struct clk_div_table hdmia_div_table[] = { + { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 }, + { 4, 6 }, { 5, 8 }, { 6, 12 }, { 7, 16 }, + { 8, 24 }, + { 0, 0 }, +}; + +/* divider clocks */ +static OWL_DIVIDER(noc_clk_div, "noc_clk_div", "noc_clk", CMU_BUSCLK, 19, 1, NULL, 0, 0); +static OWL_DIVIDER(ahb_clk, "ahb_clk", "noc_clk_div", CMU_BUSCLK, 4, 1, NULL, 0, 0); +static OWL_DIVIDER(apb_clk, "apb_clk", "ahb_clk", CMU_BUSCLK, 8, 2, apb_div_table, 0, 0); +static OWL_DIVIDER(usb3_mac_clk, "usb3_mac_clk", "assist_pll_clk", CMU_ASSISTPLL, 12, 2, usb3_mac_div_table, 0, 0); +static OWL_DIVIDER(rmii_ref_clk, "rmii_ref_clk", "assist_pll_clk", CMU_ASSISTPLL, 8, 1, rmii_ref_div_table, 0, 0); + +static struct clk_factor_table sd_factor_table[] = { + /* bit0 ~ 4 */ + { 0, 1, 1 }, { 1, 1, 2 }, { 2, 1, 3 }, { 3, 1, 4 }, + { 4, 1, 5 }, { 5, 1, 6 }, { 6, 1, 7 }, { 7, 1, 8 }, + { 8, 1, 9 }, { 9, 1, 10 }, { 10, 1, 11 }, { 11, 1, 12 }, + { 12, 1, 13 }, { 13, 1, 14 }, { 14, 1, 15 }, { 15, 1, 16 }, + { 16, 1, 17 }, { 17, 1, 18 }, { 18, 1, 19 }, { 19, 1, 20 }, + { 20, 1, 21 }, { 21, 1, 22 }, { 22, 1, 23 }, { 23, 1, 24 }, + { 24, 1, 25 }, { 25, 1, 26 }, { 26, 1, 27 }, { 27, 1, 28 }, + { 28, 1, 29 }, { 29, 1, 30 }, { 30, 1, 31 }, { 31, 1, 32 }, + + /* bit8: /128 */ + { 256, 1, 1 * 128 }, { 257, 1, 2 * 128 }, { 258, 1, 3 * 128 }, { 259, 1, 4 * 128 }, + { 260, 1, 5 * 128 }, { 261, 1, 6 * 128 }, { 262, 1, 7 * 128 }, { 263, 1, 8 * 128 }, + { 264, 1, 9 * 128 }, { 265, 1, 10 * 128 }, { 266, 1, 11 * 128 }, { 267, 1, 12 * 128 }, + { 268, 1, 13 * 128 }, { 269, 1, 14 * 128 }, { 270, 1, 15 * 128 }, { 271, 1, 16 * 128 }, + { 272, 1, 17 * 128 }, { 273, 1, 18 * 128 }, { 274, 1, 19 * 128 }, { 275, 1, 20 * 128 }, + { 276, 1, 21 * 128 }, { 277, 1, 22 * 128 }, { 278, 1, 23 * 128 }, { 279, 1, 24 * 128 }, + { 280, 1, 25 * 128 }, { 281, 1, 26 * 128 }, { 282, 1, 27 * 128 }, { 283, 1, 28 * 128 }, + { 284, 1, 29 * 128 }, { 285, 1, 30 * 128 }, { 286, 1, 31 * 128 }, { 287, 1, 32 * 128 }, + + { 0, 0 }, +}; + +static struct clk_factor_table dmm_factor_table[] = { + { 0, 1, 1 }, { 1, 2, 3 }, { 2, 1, 2 }, { 3, 1, 3 }, + { 4, 1, 4 }, + { 0, 0, 0 }, +}; + +static struct clk_factor_table noc_factor_table[] = { + { 0, 1, 1 }, { 1, 2, 3 }, { 2, 1, 2 }, { 3, 1, 3 }, { 4, 1, 4 }, + { 0, 0, 0 }, +}; + +static struct clk_factor_table bisp_factor_table[] = { + { 0, 1, 1 }, { 1, 2, 3 }, { 2, 1, 2 }, { 3, 2, 5 }, + { 4, 1, 3 }, { 5, 1, 4 }, { 6, 1, 6 }, { 7, 1, 8 }, + { 0, 0, 0 }, +}; + +/* factor clocks */ +static OWL_FACTOR(noc_clk, "noc_clk", "noc_clk_mux", CMU_BUSCLK, 16, 3, noc_factor_table, 0, 0); +static OWL_FACTOR(de_clk1, "de_clk1", "de_clk", CMU_DECLK, 0, 3, bisp_factor_table, 0, 0); +static OWL_FACTOR(de_clk2, "de_clk2", "de_clk", CMU_DECLK, 4, 3, bisp_factor_table, 0, 0); +static OWL_FACTOR(de_clk3, "de_clk3", "de_clk", CMU_DECLK, 8, 3, bisp_factor_table, 0, 0); + +/* gate clocks */ +static OWL_GATE(gpio_clk, "gpio_clk", "apb_clk", CMU_DEVCLKEN0, 18, 0, 0); +static OWL_GATE_NO_PARENT(gpu_clk, "gpu_clk", CMU_DEVCLKEN0, 30, 0, 0); +static OWL_GATE(dmac_clk, "dmac_clk", "noc_clk_div", CMU_DEVCLKEN0, 1, 0, 0); +static OWL_GATE(timer_clk, "timer_clk", "hosc", CMU_DEVCLKEN1, 27, 0, 0); +static OWL_GATE_NO_PARENT(dsi_clk, "dsi_clk", CMU_DEVCLKEN0, 12, 0, 0); +static OWL_GATE(ddr0_clk, "ddr0_clk", "ddr_pll_clk", CMU_DEVCLKEN0, 31, 0, CLK_IGNORE_UNUSED); +static OWL_GATE(ddr1_clk, "ddr1_clk", "ddr_pll_clk", CMU_DEVCLKEN0, 29, 0, CLK_IGNORE_UNUSED); +static OWL_GATE_NO_PARENT(usb3_480mpll0_clk, "usb3_480mpll0_clk", CMU_USBPLL, 3, 0, 0); +static OWL_GATE_NO_PARENT(usb3_480mphy0_clk, "usb3_480mphy0_clk", CMU_USBPLL, 2, 0, 0); +static OWL_GATE_NO_PARENT(usb3_5gphy_clk, "usb3_5gphy_clk", CMU_USBPLL, 1, 0, 0); +static OWL_GATE_NO_PARENT(usb3_cce_clk, "usb3_cce_clk", CMU_USBPLL, 0, 0, 0); +static OWL_GATE(edp24M_clk, "edp24M_clk", "diff24M", CMU_EDPCLK, 8, 0, 0); +static OWL_GATE(edp_link_clk, "edp_link_clk", "edp_pll_clk", CMU_DEVCLKEN0, 10, 0, 0); +static OWL_GATE_NO_PARENT(usbh0_pllen_clk, "usbh0_pllen_clk", CMU_USBPLL, 12, 0, 0); +static OWL_GATE_NO_PARENT(usbh0_phy_clk, "usbh0_phy_clk", CMU_USBPLL, 10, 0, 0); +static OWL_GATE_NO_PARENT(usbh0_cce_clk, "usbh0_cce_clk", CMU_USBPLL, 8, 0, 0); +static OWL_GATE_NO_PARENT(usbh1_pllen_clk, "usbh1_pllen_clk", CMU_USBPLL, 13, 0, 0); +static OWL_GATE_NO_PARENT(usbh1_phy_clk, "usbh1_phy_clk", CMU_USBPLL, 11, 0, 0); +static OWL_GATE_NO_PARENT(usbh1_cce_clk, "usbh1_cce_clk", CMU_USBPLL, 9, 0, 0); +static OWL_GATE(spi0_clk, "spi0_clk", "ahb_clk", CMU_DEVCLKEN1, 10, 0, CLK_IGNORE_UNUSED); +static OWL_GATE(spi1_clk, "spi1_clk", "ahb_clk", CMU_DEVCLKEN1, 11, 0, CLK_IGNORE_UNUSED); +static OWL_GATE(spi2_clk, "spi2_clk", "ahb_clk", CMU_DEVCLKEN1, 12, 0, CLK_IGNORE_UNUSED); +static OWL_GATE(spi3_clk, "spi3_clk", "ahb_clk", CMU_DEVCLKEN1, 13, 0, CLK_IGNORE_UNUSED); + +/* composite clocks */ +static OWL_COMP_FACTOR(bisp_clk, "bisp_clk", bisp_clk_mux_p, + OWL_MUX_HW(CMU_BISPCLK, 4, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 14, 0), + OWL_FACTOR_HW(CMU_BISPCLK, 0, 3, 0, bisp_factor_table), + 0); + +static OWL_COMP_DIV(csi0_clk, "csi0_clk", csi_clk_mux_p, + OWL_MUX_HW(CMU_CSICLK, 4, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 13, 0), + OWL_DIVIDER_HW(CMU_CSICLK, 0, 4, 0, NULL), + 0); + +static OWL_COMP_DIV(csi1_clk, "csi1_clk", csi_clk_mux_p, + OWL_MUX_HW(CMU_CSICLK, 20, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 15, 0), + OWL_DIVIDER_HW(CMU_CSICLK, 16, 4, 0, NULL), + 0); + +static OWL_COMP_PASS(de_clk, "de_clk", de_clk_mux_p, + OWL_MUX_HW(CMU_DECLK, 12, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 8, 0), + 0); + +static OWL_COMP_FACTOR(dmm_clk, "dmm_clk", dmm_clk_mux_p, + OWL_MUX_HW(CMU_BUSCLK, 10, 2), + OWL_GATE_HW(CMU_DEVCLKEN0, 19, 0), + OWL_FACTOR_HW(CMU_BUSCLK, 12, 3, 0, dmm_factor_table), + CLK_IGNORE_UNUSED); + +static OWL_COMP_FACTOR(edp_clk, "edp_clk", edp_clk_mux_p, + OWL_MUX_HW(CMU_EDPCLK, 19, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 10, 0), + OWL_FACTOR_HW(CMU_EDPCLK, 16, 3, 0, bisp_factor_table), + 0); + +static OWL_COMP_DIV_FIXED(eth_mac_clk, "eth_mac_clk", "assist_pll_clk", + OWL_GATE_HW(CMU_DEVCLKEN1, 22, 0), + OWL_DIVIDER_HW(CMU_ASSISTPLL, 10, 1, 0, eth_mac_div_table), + 0); + +static OWL_COMP_FACTOR(gpu_core_clk, "gpu_core_clk", gpu_clk_mux_p, + OWL_MUX_HW(CMU_GPU3DCLK, 4, 2), + OWL_GATE_HW(CMU_GPU3DCLK, 15, 0), + OWL_FACTOR_HW(CMU_GPU3DCLK, 0, 3, 0, bisp_factor_table), + 0); + +static OWL_COMP_FACTOR(gpu_mem_clk, "gpu_mem_clk", gpu_clk_mux_p, + OWL_MUX_HW(CMU_GPU3DCLK, 20, 2), + OWL_GATE_HW(CMU_GPU3DCLK, 14, 0), + OWL_FACTOR_HW(CMU_GPU3DCLK, 16, 3, 0, bisp_factor_table), + 0); + +static OWL_COMP_FACTOR(gpu_sys_clk, "gpu_sys_clk", gpu_clk_mux_p, + OWL_MUX_HW(CMU_GPU3DCLK, 28, 2), + OWL_GATE_HW(CMU_GPU3DCLK, 13, 0), + OWL_FACTOR_HW(CMU_GPU3DCLK, 24, 3, 0, bisp_factor_table), + 0); + +static OWL_COMP_FACTOR(hde_clk, "hde_clk", hde_clk_mux_p, + OWL_MUX_HW(CMU_HDECLK, 4, 2), + OWL_GATE_HW(CMU_DEVCLKEN0, 27, 0), + OWL_FACTOR_HW(CMU_HDECLK, 0, 3, 0, bisp_factor_table), + 0); + +static OWL_COMP_DIV(hdmia_clk, "hdmia_clk", i2s_clk_mux_p, + OWL_MUX_HW(CMU_AUDIOPLL, 24, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 22, 0), + OWL_DIVIDER_HW(CMU_AUDIOPLL, 24, 4, 0, hdmia_div_table), + 0); + +static OWL_COMP_FIXED_FACTOR(i2c0_clk, "i2c0_clk", "assist_pll_clk", + OWL_GATE_HW(CMU_DEVCLKEN1, 14, 0), + 1, 5, 0); + +static OWL_COMP_FIXED_FACTOR(i2c1_clk, "i2c1_clk", "assist_pll_clk", + OWL_GATE_HW(CMU_DEVCLKEN1, 15, 0), + 1, 5, 0); + +static OWL_COMP_FIXED_FACTOR(i2c2_clk, "i2c2_clk", "assist_pll_clk", + OWL_GATE_HW(CMU_DEVCLKEN1, 30, 0), + 1, 5, 0); + +static OWL_COMP_FIXED_FACTOR(i2c3_clk, "i2c3_clk", "assist_pll_clk", + OWL_GATE_HW(CMU_DEVCLKEN1, 31, 0), + 1, 5, 0); + +static OWL_COMP_FIXED_FACTOR(i2c4_clk, "i2c4_clk", "assist_pll_clk", + OWL_GATE_HW(CMU_DEVCLKEN0, 17, 0), + 1, 5, 0); + +static OWL_COMP_FIXED_FACTOR(i2c5_clk, "i2c5_clk", "assist_pll_clk", + OWL_GATE_HW(CMU_DEVCLKEN1, 1, 0), + 1, 5, 0); + +static OWL_COMP_DIV(i2srx_clk, "i2srx_clk", i2s_clk_mux_p, + OWL_MUX_HW(CMU_AUDIOPLL, 24, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 21, 0), + OWL_DIVIDER_HW(CMU_AUDIOPLL, 20, 4, 0, i2s_div_table), + 0); + +static OWL_COMP_DIV(i2stx_clk, "i2stx_clk", i2s_clk_mux_p, + OWL_MUX_HW(CMU_AUDIOPLL, 24, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 20, 0), + OWL_DIVIDER_HW(CMU_AUDIOPLL, 16, 4, 0, i2s_div_table), + 0); + +static OWL_COMP_FACTOR(imx_clk, "imx_clk", imx_clk_mux_p, + OWL_MUX_HW(CMU_IMXCLK, 4, 1), + OWL_GATE_HW(CMU_DEVCLKEN1, 17, 0), + OWL_FACTOR_HW(CMU_IMXCLK, 0, 3, 0, bisp_factor_table), + 0); + +static OWL_COMP_DIV(lcd_clk, "lcd_clk", lcd_clk_mux_p, + OWL_MUX_HW(CMU_LCDCLK, 12, 2), + OWL_GATE_HW(CMU_DEVCLKEN0, 9, 0), + OWL_DIVIDER_HW(CMU_LCDCLK, 0, 5, 0, NULL), + 0); + +static OWL_COMP_DIV(nand0_clk, "nand0_clk", nand_clk_mux_p, + OWL_MUX_HW(CMU_NANDCCLK, 8, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 4, 0), + OWL_DIVIDER_HW(CMU_NANDCCLK, 0, 4, 0, nand_div_table), + CLK_SET_RATE_PARENT); + +static OWL_COMP_DIV(nand1_clk, "nand1_clk", nand_clk_mux_p, + OWL_MUX_HW(CMU_NANDCCLK, 24, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 11, 0), + OWL_DIVIDER_HW(CMU_NANDCCLK, 16, 4, 0, nand_div_table), + CLK_SET_RATE_PARENT); + +static OWL_COMP_DIV_FIXED(pwm0_clk, "pwm0_clk", "hosc", + OWL_GATE_HW(CMU_DEVCLKEN1, 23, 0), + OWL_DIVIDER_HW(CMU_PWM0CLK, 0, 6, 0, NULL), + 0); + +static OWL_COMP_DIV_FIXED(pwm1_clk, "pwm1_clk", "hosc", + OWL_GATE_HW(CMU_DEVCLKEN1, 24, 0), + OWL_DIVIDER_HW(CMU_PWM1CLK, 0, 6, 0, NULL), + 0); +/* + * pwm2 may be for backlight, do not gate it + * even it is "unused", because it may be + * enabled at boot stage, and in kernel, driver + * has no effective method to know the real status, + * so, the best way is keeping it as what it was. + */ +static OWL_COMP_DIV_FIXED(pwm2_clk, "pwm2_clk", "hosc", + OWL_GATE_HW(CMU_DEVCLKEN1, 25, 0), + OWL_DIVIDER_HW(CMU_PWM2CLK, 0, 6, 0, NULL), + CLK_IGNORE_UNUSED); + +static OWL_COMP_DIV_FIXED(pwm3_clk, "pwm3_clk", "hosc", + OWL_GATE_HW(CMU_DEVCLKEN1, 26, 0), + OWL_DIVIDER_HW(CMU_PWM3CLK, 0, 6, 0, NULL), + 0); + +static OWL_COMP_DIV_FIXED(pwm4_clk, "pwm4_clk", "hosc", + OWL_GATE_HW(CMU_DEVCLKEN1, 4, 0), + OWL_DIVIDER_HW(CMU_PWM4CLK, 0, 6, 0, NULL), + 0); + +static OWL_COMP_DIV_FIXED(pwm5_clk, "pwm5_clk", "hosc", + OWL_GATE_HW(CMU_DEVCLKEN1, 5, 0), + OWL_DIVIDER_HW(CMU_PWM5CLK, 0, 6, 0, NULL), + 0); + +static OWL_COMP_FACTOR(sd0_clk, "sd0_clk", sd_clk_mux_p, + OWL_MUX_HW(CMU_SD0CLK, 9, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 5, 0), + OWL_FACTOR_HW(CMU_SD0CLK, 0, 9, 0, sd_factor_table), + 0); + +static OWL_COMP_FACTOR(sd1_clk, "sd1_clk", sd_clk_mux_p, + OWL_MUX_HW(CMU_SD1CLK, 9, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 6, 0), + OWL_FACTOR_HW(CMU_SD1CLK, 0, 9, 0, sd_factor_table), + 0); + +static OWL_COMP_FACTOR(sd2_clk, "sd2_clk", sd_clk_mux_p, + OWL_MUX_HW(CMU_SD2CLK, 9, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 7, 0), + OWL_FACTOR_HW(CMU_SD2CLK, 0, 9, 0, sd_factor_table), + 0); + +static OWL_COMP_FACTOR(sd3_clk, "sd3_clk", sd_clk_mux_p, + OWL_MUX_HW(CMU_SD3CLK, 9, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 16, 0), + OWL_FACTOR_HW(CMU_SD3CLK, 0, 9, 0, sd_factor_table), + 0); + +static OWL_COMP_DIV(sensor_clk, "sensor_clk", sensor_clk_mux_p, + OWL_MUX_HW(CMU_SENSORCLK, 4, 1), + OWL_GATE_HW(CMU_DEVCLKEN0, 14, 0), + OWL_DIVIDER_HW(CMU_SENSORCLK, 0, 4, 0, NULL), + 0); + +static OWL_COMP_DIV_FIXED(speed_sensor_clk, "speed_sensor_clk", + "hosc", + OWL_GATE_HW(CMU_DEVCLKEN1, 0, 0), + OWL_DIVIDER_HW(CMU_TLSCLK, 0, 4, CLK_DIVIDER_POWER_OF_TWO, NULL), + 0); + +static OWL_COMP_DIV_FIXED(thermal_sensor_clk, "thermal_sensor_clk", + "hosc", + OWL_GATE_HW(CMU_DEVCLKEN1, 2, 0), + OWL_DIVIDER_HW(CMU_TLSCLK, 8, 4, CLK_DIVIDER_POWER_OF_TWO, NULL), + 0); + +static OWL_COMP_DIV(uart0_clk, "uart0_clk", uart_clk_mux_p, + OWL_MUX_HW(CMU_UART0CLK, 16, 1), + OWL_GATE_HW(CMU_DEVCLKEN1, 6, 0), + OWL_DIVIDER_HW(CMU_UART0CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL), + CLK_IGNORE_UNUSED); + +static OWL_COMP_DIV(uart1_clk, "uart1_clk", uart_clk_mux_p, + OWL_MUX_HW(CMU_UART1CLK, 16, 1), + OWL_GATE_HW(CMU_DEVCLKEN1, 7, 0), + OWL_DIVIDER_HW(CMU_UART1CLK, 1, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL), + CLK_IGNORE_UNUSED); + +static OWL_COMP_DIV(uart2_clk, "uart2_clk", uart_clk_mux_p, + OWL_MUX_HW(CMU_UART2CLK, 16, 1), + OWL_GATE_HW(CMU_DEVCLKEN1, 8, 0), + OWL_DIVIDER_HW(CMU_UART2CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL), + CLK_IGNORE_UNUSED); + +static OWL_COMP_DIV(uart3_clk, "uart3_clk", uart_clk_mux_p, + OWL_MUX_HW(CMU_UART3CLK, 16, 1), + OWL_GATE_HW(CMU_DEVCLKEN1, 19, 0), + OWL_DIVIDER_HW(CMU_UART3CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL), + CLK_IGNORE_UNUSED); + +static OWL_COMP_DIV(uart4_clk, "uart4_clk", uart_clk_mux_p, + OWL_MUX_HW(CMU_UART4CLK, 16, 1), + OWL_GATE_HW(CMU_DEVCLKEN1, 20, 0), + OWL_DIVIDER_HW(CMU_UART4CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL), + CLK_IGNORE_UNUSED); + +static OWL_COMP_DIV(uart5_clk, "uart5_clk", uart_clk_mux_p, + OWL_MUX_HW(CMU_UART5CLK, 16, 1), + OWL_GATE_HW(CMU_DEVCLKEN1, 21, 0), + OWL_DIVIDER_HW(CMU_UART5CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL), + CLK_IGNORE_UNUSED); + +static OWL_COMP_DIV(uart6_clk, "uart6_clk", uart_clk_mux_p, + OWL_MUX_HW(CMU_UART6CLK, 16, 1), + OWL_GATE_HW(CMU_DEVCLKEN1, 18, 0), + OWL_DIVIDER_HW(CMU_UART6CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL), + CLK_IGNORE_UNUSED); + +static OWL_COMP_FACTOR(vce_clk, "vce_clk", vce_clk_mux_p, + OWL_MUX_HW(CMU_VCECLK, 4, 2), + OWL_GATE_HW(CMU_DEVCLKEN0, 26, 0), + OWL_FACTOR_HW(CMU_VCECLK, 0, 3, 0, bisp_factor_table), + 0); + +static OWL_COMP_FACTOR(vde_clk, "vde_clk", hde_clk_mux_p, + OWL_MUX_HW(CMU_VDECLK, 4, 2), + OWL_GATE_HW(CMU_DEVCLKEN0, 25, 0), + OWL_FACTOR_HW(CMU_VDECLK, 0, 3, 0, bisp_factor_table), + 0); + +static struct owl_clk_common *s900_clks[] = { + &core_pll_clk.common, + &dev_pll_clk.common, + &ddr_pll_clk.common, + &nand_pll_clk.common, + &display_pll_clk.common, + &assist_pll_clk.common, + &audio_pll_clk.common, + &edp_pll_clk.common, + &cpu_clk.common, + &dev_clk.common, + &noc_clk_mux.common, + &noc_clk_div.common, + &ahb_clk.common, + &apb_clk.common, + &usb3_mac_clk.common, + &rmii_ref_clk.common, + &noc_clk.common, + &de_clk1.common, + &de_clk2.common, + &de_clk3.common, + &gpio_clk.common, + &gpu_clk.common, + &dmac_clk.common, + &timer_clk.common, + &dsi_clk.common, + &ddr0_clk.common, + &ddr1_clk.common, + &usb3_480mpll0_clk.common, + &usb3_480mphy0_clk.common, + &usb3_5gphy_clk.common, + &usb3_cce_clk.common, + &edp24M_clk.common, + &edp_link_clk.common, + &usbh0_pllen_clk.common, + &usbh0_phy_clk.common, + &usbh0_cce_clk.common, + &usbh1_pllen_clk.common, + &usbh1_phy_clk.common, + &usbh1_cce_clk.common, + &i2c0_clk.common, + &i2c1_clk.common, + &i2c2_clk.common, + &i2c3_clk.common, + &i2c4_clk.common, + &i2c5_clk.common, + &spi0_clk.common, + &spi1_clk.common, + &spi2_clk.common, + &spi3_clk.common, + &bisp_clk.common, + &csi0_clk.common, + &csi1_clk.common, + &de_clk.common, + &dmm_clk.common, + &edp_clk.common, + ð_mac_clk.common, + &gpu_core_clk.common, + &gpu_mem_clk.common, + &gpu_sys_clk.common, + &hde_clk.common, + &hdmia_clk.common, + &i2srx_clk.common, + &i2stx_clk.common, + &imx_clk.common, + &lcd_clk.common, + &nand0_clk.common, + &nand1_clk.common, + &pwm0_clk.common, + &pwm1_clk.common, + &pwm2_clk.common, + &pwm3_clk.common, + &pwm4_clk.common, + &pwm5_clk.common, + &sd0_clk.common, + &sd1_clk.common, + &sd2_clk.common, + &sd3_clk.common, + &sensor_clk.common, + &speed_sensor_clk.common, + &thermal_sensor_clk.common, + &uart0_clk.common, + &uart1_clk.common, + &uart2_clk.common, + &uart3_clk.common, + &uart4_clk.common, + &uart5_clk.common, + &uart6_clk.common, + &vce_clk.common, + &vde_clk.common, +}; + +static struct clk_hw_onecell_data s900_hw_clks = { + .hws = { + [CLK_CORE_PLL] = &core_pll_clk.common.hw, + [CLK_DEV_PLL] = &dev_pll_clk.common.hw, + [CLK_DDR_PLL] = &ddr_pll_clk.common.hw, + [CLK_NAND_PLL] = &nand_pll_clk.common.hw, + [CLK_DISPLAY_PLL] = &display_pll_clk.common.hw, + [CLK_ASSIST_PLL] = &assist_pll_clk.common.hw, + [CLK_AUDIO_PLL] = &audio_pll_clk.common.hw, + [CLK_EDP_PLL] = &edp_pll_clk.common.hw, + [CLK_CPU] = &cpu_clk.common.hw, + [CLK_DEV] = &dev_clk.common.hw, + [CLK_NOC_MUX] = &noc_clk_mux.common.hw, + [CLK_NOC_DIV] = &noc_clk_div.common.hw, + [CLK_AHB] = &ahb_clk.common.hw, + [CLK_APB] = &apb_clk.common.hw, + [CLK_USB3_MAC] = &usb3_mac_clk.common.hw, + [CLK_RMII_REF] = &rmii_ref_clk.common.hw, + [CLK_NOC] = &noc_clk.common.hw, + [CLK_DE1] = &de_clk1.common.hw, + [CLK_DE2] = &de_clk2.common.hw, + [CLK_DE3] = &de_clk3.common.hw, + [CLK_GPIO] = &gpio_clk.common.hw, + [CLK_GPU] = &gpu_clk.common.hw, + [CLK_DMAC] = &dmac_clk.common.hw, + [CLK_TIMER] = &timer_clk.common.hw, + [CLK_DSI] = &dsi_clk.common.hw, + [CLK_DDR0] = &ddr0_clk.common.hw, + [CLK_DDR1] = &ddr1_clk.common.hw, + [CLK_USB3_480MPLL0] = &usb3_480mpll0_clk.common.hw, + [CLK_USB3_480MPHY0] = &usb3_480mphy0_clk.common.hw, + [CLK_USB3_5GPHY] = &usb3_5gphy_clk.common.hw, + [CLK_USB3_CCE] = &usb3_cce_clk.common.hw, + [CLK_24M_EDP] = &edp24M_clk.common.hw, + [CLK_EDP_LINK] = &edp_link_clk.common.hw, + [CLK_USB2H0_PLLEN] = &usbh0_pllen_clk.common.hw, + [CLK_USB2H0_PHY] = &usbh0_phy_clk.common.hw, + [CLK_USB2H0_CCE] = &usbh0_cce_clk.common.hw, + [CLK_USB2H1_PLLEN] = &usbh1_pllen_clk.common.hw, + [CLK_USB2H1_PHY] = &usbh1_phy_clk.common.hw, + [CLK_USB2H1_CCE] = &usbh1_cce_clk.common.hw, + [CLK_I2C0] = &i2c0_clk.common.hw, + [CLK_I2C1] = &i2c1_clk.common.hw, + [CLK_I2C2] = &i2c2_clk.common.hw, + [CLK_I2C3] = &i2c3_clk.common.hw, + [CLK_I2C4] = &i2c4_clk.common.hw, + [CLK_I2C5] = &i2c5_clk.common.hw, + [CLK_SPI0] = &spi0_clk.common.hw, + [CLK_SPI1] = &spi1_clk.common.hw, + [CLK_SPI2] = &spi2_clk.common.hw, + [CLK_SPI3] = &spi3_clk.common.hw, + [CLK_BISP] = &bisp_clk.common.hw, + [CLK_CSI0] = &csi0_clk.common.hw, + [CLK_CSI1] = &csi1_clk.common.hw, + [CLK_DE0] = &de_clk.common.hw, + [CLK_DMM] = &dmm_clk.common.hw, + [CLK_EDP] = &edp_clk.common.hw, + [CLK_ETH_MAC] = ð_mac_clk.common.hw, + [CLK_GPU_CORE] = &gpu_core_clk.common.hw, + [CLK_GPU_MEM] = &gpu_mem_clk.common.hw, + [CLK_GPU_SYS] = &gpu_sys_clk.common.hw, + [CLK_HDE] = &hde_clk.common.hw, + [CLK_HDMI_AUDIO] = &hdmia_clk.common.hw, + [CLK_I2SRX] = &i2srx_clk.common.hw, + [CLK_I2STX] = &i2stx_clk.common.hw, + [CLK_IMX] = &imx_clk.common.hw, + [CLK_LCD] = &lcd_clk.common.hw, + [CLK_NAND0] = &nand0_clk.common.hw, + [CLK_NAND1] = &nand1_clk.common.hw, + [CLK_PWM0] = &pwm0_clk.common.hw, + [CLK_PWM1] = &pwm1_clk.common.hw, + [CLK_PWM2] = &pwm2_clk.common.hw, + [CLK_PWM3] = &pwm3_clk.common.hw, + [CLK_PWM4] = &pwm4_clk.common.hw, + [CLK_PWM5] = &pwm5_clk.common.hw, + [CLK_SD0] = &sd0_clk.common.hw, + [CLK_SD1] = &sd1_clk.common.hw, + [CLK_SD2] = &sd2_clk.common.hw, + [CLK_SD3] = &sd3_clk.common.hw, + [CLK_SENSOR] = &sensor_clk.common.hw, + [CLK_SPEED_SENSOR] = &speed_sensor_clk.common.hw, + [CLK_THERMAL_SENSOR] = &thermal_sensor_clk.common.hw, + [CLK_UART0] = &uart0_clk.common.hw, + [CLK_UART1] = &uart1_clk.common.hw, + [CLK_UART2] = &uart2_clk.common.hw, + [CLK_UART3] = &uart3_clk.common.hw, + [CLK_UART4] = &uart4_clk.common.hw, + [CLK_UART5] = &uart5_clk.common.hw, + [CLK_UART6] = &uart6_clk.common.hw, + [CLK_VCE] = &vce_clk.common.hw, + [CLK_VDE] = &vde_clk.common.hw, + }, + .num = CLK_NR_CLKS, +}; + +static const struct owl_clk_desc s900_clk_desc = { + .clks = s900_clks, + .num_clks = ARRAY_SIZE(s900_clks), + + .hw_clks = &s900_hw_clks, +}; + +static int s900_clk_probe(struct platform_device *pdev) +{ + const struct owl_clk_desc *desc; + + desc = &s900_clk_desc; + owl_clk_regmap_init(pdev, desc); + + return owl_clk_probe(&pdev->dev, desc->hw_clks); +} + +static const struct of_device_id s900_clk_of_match[] = { + { .compatible = "actions,s900-cmu", }, + { /* sentinel */ } +}; + +static struct platform_driver s900_clk_driver = { + .probe = s900_clk_probe, + .driver = { + .name = "s900-cmu", + .of_match_table = s900_clk_of_match, + }, +}; + +static int __init s900_clk_init(void) +{ + return platform_driver_register(&s900_clk_driver); +} +core_initcall(s900_clk_init); |