diff options
34 files changed, 877 insertions, 486 deletions
diff --git a/Documentation/devicetree/bindings/clock/amlogic,meson8-ddr-clkc.yaml b/Documentation/devicetree/bindings/clock/amlogic,meson8-ddr-clkc.yaml new file mode 100644 index 000000000000..4b8669f870ec --- /dev/null +++ b/Documentation/devicetree/bindings/clock/amlogic,meson8-ddr-clkc.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/amlogic,meson8-ddr-clkc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Amlogic DDR Clock Controller Device Tree Bindings + +maintainers: + - Martin Blumenstingl <martin.blumenstingl@googlemail.com> + +properties: + compatible: + enum: + - amlogic,meson8-ddr-clkc + - amlogic,meson8b-ddr-clkc + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + items: + - const: xtal + + "#clock-cells": + const: 1 + +required: + - compatible + - reg + - clocks + - clock-names + - "#clock-cells" + +additionalProperties: false + +examples: + - | + ddr_clkc: clock-controller@400 { + compatible = "amlogic,meson8-ddr-clkc"; + reg = <0x400 0x20>; + clocks = <&xtal>; + clock-names = "xtal"; + #clock-cells = <1>; + }; + +... diff --git a/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt b/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt index 4d94091c1d2d..cc51e4746b3b 100644 --- a/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt +++ b/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt @@ -11,6 +11,11 @@ Required Properties: - "amlogic,meson8m2-clkc" for Meson8m2 (S812) SoCs - #clock-cells: should be 1. - #reset-cells: should be 1. +- clocks: list of clock phandles, one for each entry in clock-names +- clock-names: should contain the following: + * "xtal": the 24MHz system oscillator + * "ddr_pll": the DDR PLL clock + * "clk_32k": (if present) the 32kHz clock signal from GPIOAO_6 (CLK_32K_IN) Parent node should have the following properties : - compatible: "amlogic,meson-hhi-sysctrl", "simple-mfd", "syscon" diff --git a/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt b/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt index c7674d0267a3..f4d153f24a0f 100644 --- a/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt +++ b/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt @@ -19,7 +19,7 @@ Required Properties: - "renesas,r8a7745-cpg-mssr" for the r8a7745 SoC (RZ/G1E) - "renesas,r8a77470-cpg-mssr" for the r8a77470 SoC (RZ/G1C) - "renesas,r8a774a1-cpg-mssr" for the r8a774a1 SoC (RZ/G2M) - - "renesas,r8a774b1-cpg-mssr" for the r8a774a1 SoC (RZ/G2N) + - "renesas,r8a774b1-cpg-mssr" for the r8a774b1 SoC (RZ/G2N) - "renesas,r8a774c0-cpg-mssr" for the r8a774c0 SoC (RZ/G2E) - "renesas,r8a7790-cpg-mssr" for the r8a7790 SoC (R-Car H2) - "renesas,r8a7791-cpg-mssr" for the r8a7791 SoC (R-Car M2-W) diff --git a/drivers/clk/clk-asm9260.c b/drivers/clk/clk-asm9260.c index dd0f90c9dd0e..536b59aabd2c 100644 --- a/drivers/clk/clk-asm9260.c +++ b/drivers/clk/clk-asm9260.c @@ -260,7 +260,6 @@ static void __init asm9260_acc_init(struct device_node *np) const char *ref_clk, *pll_clk = "pll"; u32 rate; int n; - u32 accuracy = 0; clk_data = kzalloc(struct_size(clk_data, hws, MAX_CLKS), GFP_KERNEL); if (!clk_data) @@ -275,10 +274,11 @@ static void __init asm9260_acc_init(struct device_node *np) /* register pll */ rate = (ioread32(base + HW_SYSPLLCTRL) & 0xffff) * 1000000; + /* TODO: Convert to DT parent scheme */ ref_clk = of_clk_get_parent_name(np, 0); - accuracy = clk_get_accuracy(__clk_lookup(ref_clk)); - hw = clk_hw_register_fixed_rate_with_accuracy(NULL, pll_clk, - ref_clk, 0, rate, accuracy); + hw = __clk_hw_register_fixed_rate_with_accuracy(NULL, NULL, pll_clk, + ref_clk, NULL, NULL, 0, rate, 0, + CLK_FIXED_RATE_PARENT_ACCURACY); if (IS_ERR(hw)) panic("%pOFn: can't register REFCLK. Check DT!", np); diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c index 098b2b01f0af..8de12cb0c43d 100644 --- a/drivers/clk/clk-divider.c +++ b/drivers/clk/clk-divider.c @@ -463,11 +463,12 @@ const struct clk_ops clk_divider_ro_ops = { }; EXPORT_SYMBOL_GPL(clk_divider_ro_ops); -static struct clk_hw *_register_divider(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, const struct clk_div_table *table, - spinlock_t *lock) +struct clk_hw *__clk_hw_register_divider(struct device *dev, + struct device_node *np, const char *name, + const char *parent_name, const struct clk_hw *parent_hw, + const struct clk_parent_data *parent_data, unsigned long flags, + void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags, + const struct clk_div_table *table, spinlock_t *lock) { struct clk_divider *div; struct clk_hw *hw; @@ -514,55 +515,7 @@ static struct clk_hw *_register_divider(struct device *dev, const char *name, return hw; } - -/** - * clk_register_divider - register a divider clock with the clock framework - * @dev: device registering this clock - * @name: name of this clock - * @parent_name: name of clock's parent - * @flags: framework-specific flags - * @reg: register address to adjust divider - * @shift: number of bits to shift the bitfield - * @width: width of the bitfield - * @clk_divider_flags: divider-specific flags for this clock - * @lock: shared register lock for this clock - */ -struct clk *clk_register_divider(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, spinlock_t *lock) -{ - struct clk_hw *hw; - - hw = _register_divider(dev, name, parent_name, flags, reg, shift, - width, clk_divider_flags, NULL, lock); - if (IS_ERR(hw)) - return ERR_CAST(hw); - return hw->clk; -} -EXPORT_SYMBOL_GPL(clk_register_divider); - -/** - * clk_hw_register_divider - register a divider clock with the clock framework - * @dev: device registering this clock - * @name: name of this clock - * @parent_name: name of clock's parent - * @flags: framework-specific flags - * @reg: register address to adjust divider - * @shift: number of bits to shift the bitfield - * @width: width of the bitfield - * @clk_divider_flags: divider-specific flags for this clock - * @lock: shared register lock for this clock - */ -struct clk_hw *clk_hw_register_divider(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, spinlock_t *lock) -{ - return _register_divider(dev, name, parent_name, flags, reg, shift, - width, clk_divider_flags, NULL, lock); -} -EXPORT_SYMBOL_GPL(clk_hw_register_divider); +EXPORT_SYMBOL_GPL(__clk_hw_register_divider); /** * clk_register_divider_table - register a table based divider clock with @@ -586,39 +539,15 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name, { struct clk_hw *hw; - hw = _register_divider(dev, name, parent_name, flags, reg, shift, - width, clk_divider_flags, table, lock); + hw = __clk_hw_register_divider(dev, NULL, name, parent_name, NULL, + NULL, flags, reg, shift, width, clk_divider_flags, + table, lock); if (IS_ERR(hw)) return ERR_CAST(hw); return hw->clk; } EXPORT_SYMBOL_GPL(clk_register_divider_table); -/** - * clk_hw_register_divider_table - register a table based divider clock with - * the clock framework - * @dev: device registering this clock - * @name: name of this clock - * @parent_name: name of clock's parent - * @flags: framework-specific flags - * @reg: register address to adjust divider - * @shift: number of bits to shift the bitfield - * @width: width of the bitfield - * @clk_divider_flags: divider-specific flags for this clock - * @table: array of divider/value pairs ending with a div set to 0 - * @lock: shared register lock for this clock - */ -struct clk_hw *clk_hw_register_divider_table(struct device *dev, - const char *name, const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, const struct clk_div_table *table, - spinlock_t *lock) -{ - return _register_divider(dev, name, parent_name, flags, reg, shift, - width, clk_divider_flags, table, lock); -} -EXPORT_SYMBOL_GPL(clk_hw_register_divider_table); - void clk_unregister_divider(struct clk *clk) { struct clk_divider *div; diff --git a/drivers/clk/clk-fixed-rate.c b/drivers/clk/clk-fixed-rate.c index 2c4486c09040..77499a27c8fb 100644 --- a/drivers/clk/clk-fixed-rate.c +++ b/drivers/clk/clk-fixed-rate.c @@ -24,6 +24,8 @@ * parent - fixed parent. No clk_set_parent support */ +#define to_clk_fixed_rate(_hw) container_of(_hw, struct clk_fixed_rate, hw) + static unsigned long clk_fixed_rate_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { @@ -33,7 +35,12 @@ static unsigned long clk_fixed_rate_recalc_rate(struct clk_hw *hw, static unsigned long clk_fixed_rate_recalc_accuracy(struct clk_hw *hw, unsigned long parent_accuracy) { - return to_clk_fixed_rate(hw)->fixed_accuracy; + struct clk_fixed_rate *fixed = to_clk_fixed_rate(hw); + + if (fixed->flags & CLK_FIXED_RATE_PARENT_ACCURACY) + return parent_accuracy; + + return fixed->fixed_accuracy; } const struct clk_ops clk_fixed_rate_ops = { @@ -42,24 +49,17 @@ const struct clk_ops clk_fixed_rate_ops = { }; EXPORT_SYMBOL_GPL(clk_fixed_rate_ops); -/** - * clk_hw_register_fixed_rate_with_accuracy - register fixed-rate clock with - * the clock framework - * @dev: device that is registering this clock - * @name: name of this clock - * @parent_name: name of clock's parent - * @flags: framework-specific flags - * @fixed_rate: non-adjustable clock rate - * @fixed_accuracy: non-adjustable clock rate - */ -struct clk_hw *clk_hw_register_fixed_rate_with_accuracy(struct device *dev, - const char *name, const char *parent_name, unsigned long flags, - unsigned long fixed_rate, unsigned long fixed_accuracy) +struct clk_hw *__clk_hw_register_fixed_rate(struct device *dev, + struct device_node *np, const char *name, + const char *parent_name, const struct clk_hw *parent_hw, + const struct clk_parent_data *parent_data, unsigned long flags, + unsigned long fixed_rate, unsigned long fixed_accuracy, + unsigned long clk_fixed_flags) { struct clk_fixed_rate *fixed; struct clk_hw *hw; struct clk_init_data init = {}; - int ret; + int ret = -EINVAL; /* allocate fixed-rate clock */ fixed = kzalloc(sizeof(*fixed), GFP_KERNEL); @@ -69,17 +69,26 @@ struct clk_hw *clk_hw_register_fixed_rate_with_accuracy(struct device *dev, init.name = name; init.ops = &clk_fixed_rate_ops; init.flags = flags; - init.parent_names = (parent_name ? &parent_name: NULL); - init.num_parents = (parent_name ? 1 : 0); + init.parent_names = parent_name ? &parent_name : NULL; + init.parent_hws = parent_hw ? &parent_hw : NULL; + init.parent_data = parent_data; + if (parent_name || parent_hw || parent_data) + init.num_parents = 1; + else + init.num_parents = 0; /* struct clk_fixed_rate assignments */ + fixed->flags = clk_fixed_flags; fixed->fixed_rate = fixed_rate; fixed->fixed_accuracy = fixed_accuracy; fixed->hw.init = &init; /* register the clock */ hw = &fixed->hw; - ret = clk_hw_register(dev, hw); + if (dev || !np) + ret = clk_hw_register(dev, hw); + else if (np) + ret = of_clk_hw_register(np, hw); if (ret) { kfree(fixed); hw = ERR_PTR(ret); @@ -87,47 +96,20 @@ struct clk_hw *clk_hw_register_fixed_rate_with_accuracy(struct device *dev, return hw; } -EXPORT_SYMBOL_GPL(clk_hw_register_fixed_rate_with_accuracy); +EXPORT_SYMBOL_GPL(__clk_hw_register_fixed_rate); -struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev, - const char *name, const char *parent_name, unsigned long flags, - unsigned long fixed_rate, unsigned long fixed_accuracy) +struct clk *clk_register_fixed_rate(struct device *dev, const char *name, + const char *parent_name, unsigned long flags, + unsigned long fixed_rate) { struct clk_hw *hw; hw = clk_hw_register_fixed_rate_with_accuracy(dev, name, parent_name, - flags, fixed_rate, fixed_accuracy); + flags, fixed_rate, 0); if (IS_ERR(hw)) return ERR_CAST(hw); return hw->clk; } -EXPORT_SYMBOL_GPL(clk_register_fixed_rate_with_accuracy); - -/** - * clk_hw_register_fixed_rate - register fixed-rate clock with the clock - * framework - * @dev: device that is registering this clock - * @name: name of this clock - * @parent_name: name of clock's parent - * @flags: framework-specific flags - * @fixed_rate: non-adjustable clock rate - */ -struct clk_hw *clk_hw_register_fixed_rate(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - unsigned long fixed_rate) -{ - return clk_hw_register_fixed_rate_with_accuracy(dev, name, parent_name, - flags, fixed_rate, 0); -} -EXPORT_SYMBOL_GPL(clk_hw_register_fixed_rate); - -struct clk *clk_register_fixed_rate(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - unsigned long fixed_rate) -{ - return clk_register_fixed_rate_with_accuracy(dev, name, parent_name, - flags, fixed_rate, 0); -} EXPORT_SYMBOL_GPL(clk_register_fixed_rate); void clk_unregister_fixed_rate(struct clk *clk) @@ -155,9 +137,9 @@ void clk_hw_unregister_fixed_rate(struct clk_hw *hw) EXPORT_SYMBOL_GPL(clk_hw_unregister_fixed_rate); #ifdef CONFIG_OF -static struct clk *_of_fixed_clk_setup(struct device_node *node) +static struct clk_hw *_of_fixed_clk_setup(struct device_node *node) { - struct clk *clk; + struct clk_hw *hw; const char *clk_name = node->name; u32 rate; u32 accuracy = 0; @@ -170,18 +152,18 @@ static struct clk *_of_fixed_clk_setup(struct device_node *node) of_property_read_string(node, "clock-output-names", &clk_name); - clk = clk_register_fixed_rate_with_accuracy(NULL, clk_name, NULL, + hw = clk_hw_register_fixed_rate_with_accuracy(NULL, clk_name, NULL, 0, rate, accuracy); - if (IS_ERR(clk)) - return clk; + if (IS_ERR(hw)) + return hw; - ret = of_clk_add_provider(node, of_clk_src_simple_get, clk); + ret = of_clk_add_hw_provider(node, of_clk_hw_simple_get, hw); if (ret) { - clk_unregister(clk); + clk_hw_unregister_fixed_rate(hw); return ERR_PTR(ret); } - return clk; + return hw; } /** @@ -195,27 +177,27 @@ CLK_OF_DECLARE(fixed_clk, "fixed-clock", of_fixed_clk_setup); static int of_fixed_clk_remove(struct platform_device *pdev) { - struct clk *clk = platform_get_drvdata(pdev); + struct clk_hw *hw = platform_get_drvdata(pdev); of_clk_del_provider(pdev->dev.of_node); - clk_unregister_fixed_rate(clk); + clk_hw_unregister_fixed_rate(hw); return 0; } static int of_fixed_clk_probe(struct platform_device *pdev) { - struct clk *clk; + struct clk_hw *hw; /* * This function is not executed when of_fixed_clk_setup * succeeded. */ - clk = _of_fixed_clk_setup(pdev->dev.of_node); - if (IS_ERR(clk)) - return PTR_ERR(clk); + hw = _of_fixed_clk_setup(pdev->dev.of_node); + if (IS_ERR(hw)) + return PTR_ERR(hw); - platform_set_drvdata(pdev, clk); + platform_set_drvdata(pdev, hw); return 0; } @@ -224,7 +206,6 @@ static const struct of_device_id of_fixed_clk_ids[] = { { .compatible = "fixed-clock" }, { } }; -MODULE_DEVICE_TABLE(of, of_fixed_clk_ids); static struct platform_driver of_fixed_clk_driver = { .driver = { diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c index 670053c58c1a..2ca1f2ac38a6 100644 --- a/drivers/clk/clk-gate.c +++ b/drivers/clk/clk-gate.c @@ -123,26 +123,18 @@ const struct clk_ops clk_gate_ops = { }; EXPORT_SYMBOL_GPL(clk_gate_ops); -/** - * clk_hw_register_gate - register a gate clock with the clock framework - * @dev: device that is registering this clock - * @name: name of this clock - * @parent_name: name of this clock's parent - * @flags: framework-specific flags for this clock - * @reg: register address to control gating of this clock - * @bit_idx: which bit in the register controls gating of this clock - * @clk_gate_flags: gate-specific flags for this clock - * @lock: shared register lock for this clock - */ -struct clk_hw *clk_hw_register_gate(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, +struct clk_hw *__clk_hw_register_gate(struct device *dev, + struct device_node *np, const char *name, + const char *parent_name, const struct clk_hw *parent_hw, + const struct clk_parent_data *parent_data, + unsigned long flags, void __iomem *reg, u8 bit_idx, u8 clk_gate_flags, spinlock_t *lock) { struct clk_gate *gate; struct clk_hw *hw; struct clk_init_data init = {}; - int ret; + int ret = -EINVAL; if (clk_gate_flags & CLK_GATE_HIWORD_MASK) { if (bit_idx > 15) { @@ -160,7 +152,12 @@ struct clk_hw *clk_hw_register_gate(struct device *dev, const char *name, init.ops = &clk_gate_ops; init.flags = flags; init.parent_names = parent_name ? &parent_name : NULL; - init.num_parents = parent_name ? 1 : 0; + init.parent_hws = parent_hw ? &parent_hw : NULL; + init.parent_data = parent_data; + if (parent_name || parent_hw || parent_data) + init.num_parents = 1; + else + init.num_parents = 0; /* struct clk_gate assignments */ gate->reg = reg; @@ -170,15 +167,19 @@ struct clk_hw *clk_hw_register_gate(struct device *dev, const char *name, gate->hw.init = &init; hw = &gate->hw; - ret = clk_hw_register(dev, hw); + if (dev || !np) + ret = clk_hw_register(dev, hw); + else if (np) + ret = of_clk_hw_register(np, hw); if (ret) { kfree(gate); hw = ERR_PTR(ret); } return hw; + } -EXPORT_SYMBOL_GPL(clk_hw_register_gate); +EXPORT_SYMBOL_GPL(__clk_hw_register_gate); struct clk *clk_register_gate(struct device *dev, const char *name, const char *parent_name, unsigned long flags, diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c index 13304cf5f2a8..70397b4b5ffe 100644 --- a/drivers/clk/clk-gpio.c +++ b/drivers/clk/clk-gpio.c @@ -28,6 +28,26 @@ * parent - fixed parent. No clk_set_parent support */ +/** + * struct clk_gpio - gpio gated clock + * + * @hw: handle between common and hardware-specific interfaces + * @gpiod: gpio descriptor + * + * Clock with a gpio control for enabling and disabling the parent clock + * or switching between two parents by asserting or deasserting the gpio. + * + * Implements .enable, .disable and .is_enabled or + * .get_parent, .set_parent and .determine_rate depending on which clk_ops + * is used. + */ +struct clk_gpio { + struct clk_hw hw; + struct gpio_desc *gpiod; +}; + +#define to_clk_gpio(_hw) container_of(_hw, struct clk_gpio, hw) + static int clk_gpio_gate_enable(struct clk_hw *hw) { struct clk_gpio *clk = to_clk_gpio(hw); @@ -51,12 +71,11 @@ static int clk_gpio_gate_is_enabled(struct clk_hw *hw) return gpiod_get_value(clk->gpiod); } -const struct clk_ops clk_gpio_gate_ops = { +static const struct clk_ops clk_gpio_gate_ops = { .enable = clk_gpio_gate_enable, .disable = clk_gpio_gate_disable, .is_enabled = clk_gpio_gate_is_enabled, }; -EXPORT_SYMBOL_GPL(clk_gpio_gate_ops); static int clk_sleeping_gpio_gate_prepare(struct clk_hw *hw) { @@ -111,67 +130,49 @@ static int clk_gpio_mux_set_parent(struct clk_hw *hw, u8 index) return 0; } -const struct clk_ops clk_gpio_mux_ops = { +static const struct clk_ops clk_gpio_mux_ops = { .get_parent = clk_gpio_mux_get_parent, .set_parent = clk_gpio_mux_set_parent, .determine_rate = __clk_mux_determine_rate, }; -EXPORT_SYMBOL_GPL(clk_gpio_mux_ops); -static struct clk_hw *clk_register_gpio(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, struct gpio_desc *gpiod, - unsigned long flags, const struct clk_ops *clk_gpio_ops) +static struct clk_hw *clk_register_gpio(struct device *dev, u8 num_parents, + struct gpio_desc *gpiod, + const struct clk_ops *clk_gpio_ops) { struct clk_gpio *clk_gpio; struct clk_hw *hw; struct clk_init_data init = {}; int err; + const struct clk_parent_data gpio_parent_data[] = { + { .index = 0 }, + { .index = 1 }, + }; - if (dev) - clk_gpio = devm_kzalloc(dev, sizeof(*clk_gpio), GFP_KERNEL); - else - clk_gpio = kzalloc(sizeof(*clk_gpio), GFP_KERNEL); - + clk_gpio = devm_kzalloc(dev, sizeof(*clk_gpio), GFP_KERNEL); if (!clk_gpio) return ERR_PTR(-ENOMEM); - init.name = name; + init.name = dev->of_node->name; init.ops = clk_gpio_ops; - init.flags = flags; - init.parent_names = parent_names; + init.parent_data = gpio_parent_data; init.num_parents = num_parents; + init.flags = CLK_SET_RATE_PARENT; clk_gpio->gpiod = gpiod; clk_gpio->hw.init = &init; hw = &clk_gpio->hw; - if (dev) - err = devm_clk_hw_register(dev, hw); - else - err = clk_hw_register(NULL, hw); - - if (!err) - return hw; - - if (!dev) { - kfree(clk_gpio); - } + err = devm_clk_hw_register(dev, hw); + if (err) + return ERR_PTR(err); - return ERR_PTR(err); + return hw; } -/** - * clk_hw_register_gpio_gate - register a gpio clock gate with the clock - * framework - * @dev: device that is registering this clock - * @name: name of this clock - * @parent_name: name of this clock's parent - * @gpiod: gpio descriptor to gate this clock - * @flags: clock flags - */ -struct clk_hw *clk_hw_register_gpio_gate(struct device *dev, const char *name, - const char *parent_name, struct gpio_desc *gpiod, - unsigned long flags) +static struct clk_hw *clk_hw_register_gpio_gate(struct device *dev, + int num_parents, + struct gpio_desc *gpiod) { const struct clk_ops *ops; @@ -180,88 +181,36 @@ struct clk_hw *clk_hw_register_gpio_gate(struct device *dev, const char *name, else ops = &clk_gpio_gate_ops; - return clk_register_gpio(dev, name, - (parent_name ? &parent_name : NULL), - (parent_name ? 1 : 0), gpiod, flags, ops); + return clk_register_gpio(dev, num_parents, gpiod, ops); } -EXPORT_SYMBOL_GPL(clk_hw_register_gpio_gate); -struct clk *clk_register_gpio_gate(struct device *dev, const char *name, - const char *parent_name, struct gpio_desc *gpiod, - unsigned long flags) +static struct clk_hw *clk_hw_register_gpio_mux(struct device *dev, + struct gpio_desc *gpiod) { - struct clk_hw *hw; - - hw = clk_hw_register_gpio_gate(dev, name, parent_name, gpiod, flags); - if (IS_ERR(hw)) - return ERR_CAST(hw); - return hw->clk; + return clk_register_gpio(dev, 2, gpiod, &clk_gpio_mux_ops); } -EXPORT_SYMBOL_GPL(clk_register_gpio_gate); - -/** - * clk_hw_register_gpio_mux - register a gpio clock mux with the clock framework - * @dev: device that is registering this clock - * @name: name of this clock - * @parent_names: names of this clock's parents - * @num_parents: number of parents listed in @parent_names - * @gpiod: gpio descriptor to gate this clock - * @flags: clock flags - */ -struct clk_hw *clk_hw_register_gpio_mux(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, struct gpio_desc *gpiod, - unsigned long flags) -{ - if (num_parents != 2) { - pr_err("mux-clock %s must have 2 parents\n", name); - return ERR_PTR(-EINVAL); - } - - return clk_register_gpio(dev, name, parent_names, num_parents, - gpiod, flags, &clk_gpio_mux_ops); -} -EXPORT_SYMBOL_GPL(clk_hw_register_gpio_mux); - -struct clk *clk_register_gpio_mux(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, struct gpio_desc *gpiod, - unsigned long flags) -{ - struct clk_hw *hw; - - hw = clk_hw_register_gpio_mux(dev, name, parent_names, num_parents, - gpiod, flags); - if (IS_ERR(hw)) - return ERR_CAST(hw); - return hw->clk; -} -EXPORT_SYMBOL_GPL(clk_register_gpio_mux); static int gpio_clk_driver_probe(struct platform_device *pdev) { - struct device_node *node = pdev->dev.of_node; - const char **parent_names, *gpio_name; + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + const char *gpio_name; unsigned int num_parents; struct gpio_desc *gpiod; - struct clk *clk; + struct clk_hw *hw; bool is_mux; int ret; + is_mux = of_device_is_compatible(node, "gpio-mux-clock"); + num_parents = of_clk_get_parent_count(node); - if (num_parents) { - parent_names = devm_kcalloc(&pdev->dev, num_parents, - sizeof(char *), GFP_KERNEL); - if (!parent_names) - return -ENOMEM; - - of_clk_parent_fill(node, parent_names, num_parents); - } else { - parent_names = NULL; + if (is_mux && num_parents != 2) { + dev_err(dev, "mux-clock must have 2 parents\n"); + return -EINVAL; } - is_mux = of_device_is_compatible(node, "gpio-mux-clock"); - gpio_name = is_mux ? "select" : "enable"; - gpiod = devm_gpiod_get(&pdev->dev, gpio_name, GPIOD_OUT_LOW); + gpiod = devm_gpiod_get(dev, gpio_name, GPIOD_OUT_LOW); if (IS_ERR(gpiod)) { ret = PTR_ERR(gpiod); if (ret == -EPROBE_DEFER) @@ -275,16 +224,13 @@ static int gpio_clk_driver_probe(struct platform_device *pdev) } if (is_mux) - clk = clk_register_gpio_mux(&pdev->dev, node->name, - parent_names, num_parents, gpiod, 0); + hw = clk_hw_register_gpio_mux(dev, gpiod); else - clk = clk_register_gpio_gate(&pdev->dev, node->name, - parent_names ? parent_names[0] : NULL, gpiod, - CLK_SET_RATE_PARENT); - if (IS_ERR(clk)) - return PTR_ERR(clk); + hw = clk_hw_register_gpio_gate(dev, num_parents, gpiod); + if (IS_ERR(hw)) + return PTR_ERR(hw); - return of_clk_add_provider(node, of_clk_src_simple_get, clk); + return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, hw); } static const struct of_device_id gpio_clk_match_table[] = { diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c index 570b6e5b603b..e54e79714818 100644 --- a/drivers/clk/clk-mux.c +++ b/drivers/clk/clk-mux.c @@ -145,17 +145,19 @@ const struct clk_ops clk_mux_ro_ops = { }; EXPORT_SYMBOL_GPL(clk_mux_ro_ops); -struct clk_hw *clk_hw_register_mux_table(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, - unsigned long flags, - void __iomem *reg, u8 shift, u32 mask, +struct clk_hw *__clk_hw_register_mux(struct device *dev, struct device_node *np, + const char *name, u8 num_parents, + const char * const *parent_names, + const struct clk_hw **parent_hws, + const struct clk_parent_data *parent_data, + unsigned long flags, void __iomem *reg, u8 shift, u32 mask, u8 clk_mux_flags, u32 *table, spinlock_t *lock) { struct clk_mux *mux; struct clk_hw *hw; struct clk_init_data init = {}; u8 width = 0; - int ret; + int ret = -EINVAL; if (clk_mux_flags & CLK_MUX_HIWORD_MASK) { width = fls(mask) - ffs(mask) + 1; @@ -177,6 +179,8 @@ struct clk_hw *clk_hw_register_mux_table(struct device *dev, const char *name, init.ops = &clk_mux_ops; init.flags = flags; init.parent_names = parent_names; + init.parent_data = parent_data; + init.parent_hws = parent_hws; init.num_parents = num_parents; /* struct clk_mux assignments */ @@ -189,7 +193,10 @@ struct clk_hw *clk_hw_register_mux_table(struct device *dev, const char *name, mux->hw.init = &init; hw = &mux->hw; - ret = clk_hw_register(dev, hw); + if (dev || !np) + ret = clk_hw_register(dev, hw); + else if (np) + ret = of_clk_hw_register(np, hw); if (ret) { kfree(mux); hw = ERR_PTR(ret); @@ -197,53 +204,24 @@ struct clk_hw *clk_hw_register_mux_table(struct device *dev, const char *name, return hw; } -EXPORT_SYMBOL_GPL(clk_hw_register_mux_table); +EXPORT_SYMBOL_GPL(__clk_hw_register_mux); struct clk *clk_register_mux_table(struct device *dev, const char *name, const char * const *parent_names, u8 num_parents, - unsigned long flags, - void __iomem *reg, u8 shift, u32 mask, + unsigned long flags, void __iomem *reg, u8 shift, u32 mask, u8 clk_mux_flags, u32 *table, spinlock_t *lock) { struct clk_hw *hw; - hw = clk_hw_register_mux_table(dev, name, parent_names, num_parents, - flags, reg, shift, mask, clk_mux_flags, - table, lock); + hw = clk_hw_register_mux_table(dev, name, parent_names, + num_parents, flags, reg, shift, mask, + clk_mux_flags, table, lock); if (IS_ERR(hw)) return ERR_CAST(hw); return hw->clk; } EXPORT_SYMBOL_GPL(clk_register_mux_table); -struct clk *clk_register_mux(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, - unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_mux_flags, spinlock_t *lock) -{ - u32 mask = BIT(width) - 1; - - return clk_register_mux_table(dev, name, parent_names, num_parents, - flags, reg, shift, mask, clk_mux_flags, - NULL, lock); -} -EXPORT_SYMBOL_GPL(clk_register_mux); - -struct clk_hw *clk_hw_register_mux(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, - unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_mux_flags, spinlock_t *lock) -{ - u32 mask = BIT(width) - 1; - - return clk_hw_register_mux_table(dev, name, parent_names, num_parents, - flags, reg, shift, mask, clk_mux_flags, - NULL, lock); -} -EXPORT_SYMBOL_GPL(clk_hw_register_mux); - void clk_unregister_mux(struct clk *clk) { struct clk_mux *mux; diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index fa99d0b42ccb..d529ad67805c 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -2996,6 +2996,41 @@ static int clk_dump_show(struct seq_file *s, void *data) } DEFINE_SHOW_ATTRIBUTE(clk_dump); +#undef CLOCK_ALLOW_WRITE_DEBUGFS +#ifdef CLOCK_ALLOW_WRITE_DEBUGFS +/* + * This can be dangerous, therefore don't provide any real compile time + * configuration option for this feature. + * People who want to use this will need to modify the source code directly. + */ +static int clk_rate_set(void *data, u64 val) +{ + struct clk_core *core = data; + int ret; + + clk_prepare_lock(); + ret = clk_core_set_rate_nolock(core, val); + clk_prepare_unlock(); + + return ret; +} + +#define clk_rate_mode 0644 +#else +#define clk_rate_set NULL +#define clk_rate_mode 0444 +#endif + +static int clk_rate_get(void *data, u64 *val) +{ + struct clk_core *core = data; + + *val = core->rate; + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(clk_rate_fops, clk_rate_get, clk_rate_set, "%llu\n"); + static const struct { unsigned long flag; const char *name; @@ -3145,7 +3180,8 @@ static void clk_debug_create_one(struct clk_core *core, struct dentry *pdentry) root = debugfs_create_dir(core->name, pdentry); core->dentry = root; - debugfs_create_ulong("clk_rate", 0444, root, &core->rate); + debugfs_create_file("clk_rate", clk_rate_mode, root, core, + &clk_rate_fops); debugfs_create_file("clk_min_rate", 0444, root, core, &clk_min_rate_fops); debugfs_create_file("clk_max_rate", 0444, root, core, &clk_max_rate_fops); debugfs_create_ulong("clk_accuracy", 0444, root, &core->accuracy); diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile index 3939f218587a..6eca2a406ee3 100644 --- a/drivers/clk/meson/Makefile +++ b/drivers/clk/meson/Makefile @@ -18,4 +18,4 @@ obj-$(CONFIG_COMMON_CLK_AXG) += axg.o axg-aoclk.o obj-$(CONFIG_COMMON_CLK_AXG_AUDIO) += axg-audio.o obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o obj-$(CONFIG_COMMON_CLK_G12A) += g12a.o g12a-aoclk.o -obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o +obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o meson8-ddr.o diff --git a/drivers/clk/meson/clk-pll.c b/drivers/clk/meson/clk-pll.c index 489092dde3a6..b17a13e9337c 100644 --- a/drivers/clk/meson/clk-pll.c +++ b/drivers/clk/meson/clk-pll.c @@ -77,6 +77,15 @@ static unsigned long meson_clk_pll_recalc_rate(struct clk_hw *hw, unsigned int m, n, frac; n = meson_parm_read(clk->map, &pll->n); + + /* + * On some HW, N is set to zero on init. This value is invalid as + * it would result in a division by zero. The rate can't be + * calculated in this case + */ + if (n == 0) + return 0; + m = meson_parm_read(clk->map, &pll->m); frac = MESON_PARM_APPLICABLE(&pll->frac) ? diff --git a/drivers/clk/meson/g12a.c b/drivers/clk/meson/g12a.c index b3af61cc6fb9..d2760a021301 100644 --- a/drivers/clk/meson/g12a.c +++ b/drivers/clk/meson/g12a.c @@ -4692,6 +4692,7 @@ static struct clk_regmap *const g12a_clk_regmaps[] = { &g12a_bt656, &g12a_usb1_to_ddr, &g12a_mmc_pclk, + &g12a_uart2, &g12a_vpu_intr, &g12a_gic, &g12a_sd_emmc_a_clk0, diff --git a/drivers/clk/meson/meson8-ddr.c b/drivers/clk/meson/meson8-ddr.c new file mode 100644 index 000000000000..4b73ea244b63 --- /dev/null +++ b/drivers/clk/meson/meson8-ddr.c @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Amlogic Meson8 DDR clock controller + * + * Copyright (C) 2019 Martin Blumenstingl <martin.blumenstingl@googlemail.com> + */ + +#include <dt-bindings/clock/meson8-ddr-clkc.h> + +#include <linux/clk-provider.h> +#include <linux/platform_device.h> + +#include "clk-regmap.h" +#include "clk-pll.h" + +#define AM_DDR_PLL_CNTL 0x00 +#define AM_DDR_PLL_CNTL1 0x04 +#define AM_DDR_PLL_CNTL2 0x08 +#define AM_DDR_PLL_CNTL3 0x0c +#define AM_DDR_PLL_CNTL4 0x10 +#define AM_DDR_PLL_STS 0x14 +#define DDR_CLK_CNTL 0x18 +#define DDR_CLK_STS 0x1c + +static struct clk_regmap meson8_ddr_pll_dco = { + .data = &(struct meson_clk_pll_data){ + .en = { + .reg_off = AM_DDR_PLL_CNTL, + .shift = 30, + .width = 1, + }, + .m = { + .reg_off = AM_DDR_PLL_CNTL, + .shift = 0, + .width = 9, + }, + .n = { + .reg_off = AM_DDR_PLL_CNTL, + .shift = 9, + .width = 5, + }, + .l = { + .reg_off = AM_DDR_PLL_CNTL, + .shift = 31, + .width = 1, + }, + .rst = { + .reg_off = AM_DDR_PLL_CNTL, + .shift = 29, + .width = 1, + }, + }, + .hw.init = &(struct clk_init_data){ + .name = "ddr_pll_dco", + .ops = &meson_clk_pll_ro_ops, + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xtal", + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap meson8_ddr_pll = { + .data = &(struct clk_regmap_div_data){ + .offset = AM_DDR_PLL_CNTL, + .shift = 16, + .width = 2, + .flags = CLK_DIVIDER_POWER_OF_TWO, + }, + .hw.init = &(struct clk_init_data){ + .name = "ddr_pll", + .ops = &clk_regmap_divider_ro_ops, + .parent_hws = (const struct clk_hw *[]) { + &meson8_ddr_pll_dco.hw + }, + .num_parents = 1, + }, +}; + +static struct clk_hw_onecell_data meson8_ddr_clk_hw_onecell_data = { + .hws = { + [DDR_CLKID_DDR_PLL_DCO] = &meson8_ddr_pll_dco.hw, + [DDR_CLKID_DDR_PLL] = &meson8_ddr_pll.hw, + }, + .num = 2, +}; + +static struct clk_regmap *const meson8_ddr_clk_regmaps[] = { + &meson8_ddr_pll_dco, + &meson8_ddr_pll, +}; + +static const struct regmap_config meson8_ddr_clkc_regmap_config = { + .reg_bits = 8, + .val_bits = 32, + .reg_stride = 4, + .max_register = DDR_CLK_STS, +}; + +static int meson8_ddr_clkc_probe(struct platform_device *pdev) +{ + struct regmap *regmap; + void __iomem *base; + struct clk_hw *hw; + int ret, i; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + regmap = devm_regmap_init_mmio(&pdev->dev, base, + &meson8_ddr_clkc_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + /* Populate regmap */ + for (i = 0; i < ARRAY_SIZE(meson8_ddr_clk_regmaps); i++) + meson8_ddr_clk_regmaps[i]->map = regmap; + + /* Register all clks */ + for (i = 0; i < meson8_ddr_clk_hw_onecell_data.num; i++) { + hw = meson8_ddr_clk_hw_onecell_data.hws[i]; + + ret = devm_clk_hw_register(&pdev->dev, hw); + if (ret) { + dev_err(&pdev->dev, "Clock registration failed\n"); + return ret; + } + } + + return devm_of_clk_add_hw_provider(&pdev->dev, of_clk_hw_onecell_get, + &meson8_ddr_clk_hw_onecell_data); +} + +static const struct of_device_id meson8_ddr_clkc_match_table[] = { + { .compatible = "amlogic,meson8-ddr-clkc" }, + { .compatible = "amlogic,meson8b-ddr-clkc" }, + { /* sentinel */ } +}; + +static struct platform_driver meson8_ddr_clkc_driver = { + .probe = meson8_ddr_clkc_probe, + .driver = { + .name = "meson8-ddr-clkc", + .of_match_table = meson8_ddr_clkc_match_table, + }, +}; + +builtin_platform_driver(meson8_ddr_clkc_driver); diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c index 67e6691e080c..9fd31f23b2a9 100644 --- a/drivers/clk/meson/meson8b.c +++ b/drivers/clk/meson/meson8b.c @@ -97,8 +97,10 @@ static struct clk_regmap meson8b_fixed_pll_dco = { .hw.init = &(struct clk_init_data){ .name = "fixed_pll_dco", .ops = &meson_clk_pll_ro_ops, - .parent_hws = (const struct clk_hw *[]) { - &meson8b_xtal.hw + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xtal", + .name = "xtal", + .index = -1, }, .num_parents = 1, }, @@ -162,8 +164,10 @@ static struct clk_regmap meson8b_hdmi_pll_dco = { /* sometimes also called "HPLL" or "HPLL PLL" */ .name = "hdmi_pll_dco", .ops = &meson_clk_pll_ro_ops, - .parent_hws = (const struct clk_hw *[]) { - &meson8b_xtal.hw + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xtal", + .name = "xtal", + .index = -1, }, .num_parents = 1, }, @@ -237,8 +241,10 @@ static struct clk_regmap meson8b_sys_pll_dco = { .hw.init = &(struct clk_init_data){ .name = "sys_pll_dco", .ops = &meson_clk_pll_ops, - .parent_hws = (const struct clk_hw *[]) { - &meson8b_xtal.hw + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xtal", + .name = "xtal", + .index = -1, }, .num_parents = 1, }, @@ -631,9 +637,9 @@ static struct clk_regmap meson8b_cpu_in_sel = { .hw.init = &(struct clk_init_data){ .name = "cpu_in_sel", .ops = &clk_regmap_mux_ops, - .parent_hws = (const struct clk_hw *[]) { - &meson8b_xtal.hw, - &meson8b_sys_pll.hw, + .parent_data = (const struct clk_parent_data[]) { + { .fw_name = "xtal", .name = "xtal", .index = -1, }, + { .hw = &meson8b_sys_pll.hw, }, }, .num_parents = 2, .flags = (CLK_SET_RATE_PARENT | @@ -736,9 +742,9 @@ static struct clk_regmap meson8b_cpu_clk = { .hw.init = &(struct clk_init_data){ .name = "cpu_clk", .ops = &clk_regmap_mux_ops, - .parent_hws = (const struct clk_hw *[]) { - &meson8b_xtal.hw, - &meson8b_cpu_scale_out_sel.hw, + .parent_data = (const struct clk_parent_data[]) { + { .fw_name = "xtal", .name = "xtal", .index = -1, }, + { .hw = &meson8b_cpu_scale_out_sel.hw, }, }, .num_parents = 2, .flags = (CLK_SET_RATE_PARENT | @@ -758,12 +764,12 @@ static struct clk_regmap meson8b_nand_clk_sel = { .name = "nand_clk_sel", .ops = &clk_regmap_mux_ops, /* FIXME all other parents are unknown: */ - .parent_hws = (const struct clk_hw *[]) { - &meson8b_fclk_div4.hw, - &meson8b_fclk_div3.hw, - &meson8b_fclk_div5.hw, - &meson8b_fclk_div7.hw, - &meson8b_xtal.hw, + .parent_data = (const struct clk_parent_data[]) { + { .hw = &meson8b_fclk_div4.hw, }, + { .hw = &meson8b_fclk_div3.hw, }, + { .hw = &meson8b_fclk_div5.hw, }, + { .hw = &meson8b_fclk_div7.hw, }, + { .fw_name = "xtal", .name = "xtal", .index = -1, }, }, .num_parents = 5, .flags = CLK_SET_RATE_PARENT, @@ -1721,8 +1727,10 @@ static struct clk_regmap meson8b_hdmi_sys_sel = { .name = "hdmi_sys_sel", .ops = &clk_regmap_mux_ro_ops, /* FIXME: all other parents are unknown */ - .parent_hws = (const struct clk_hw *[]) { - &meson8b_xtal.hw + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xtal", + .name = "xtal", + .index = -1, }, .num_parents = 1, .flags = CLK_SET_RATE_NO_REPARENT, @@ -1764,17 +1772,20 @@ static struct clk_regmap meson8b_hdmi_sys = { /* * The MALI IP is clocked by two identical clocks (mali_0 and mali_1) - * muxed by a glitch-free switch on Meson8b and Meson8m2. Meson8 only - * has mali_0 and no glitch-free mux. + * muxed by a glitch-free switch on Meson8b and Meson8m2. The CCF can + * actually manage this glitch-free mux because it does top-to-bottom + * updates the each clock tree and switches to the "inactive" one when + * CLK_SET_RATE_GATE is set. + * Meson8 only has mali_0 and no glitch-free mux. */ -static const struct clk_hw *meson8b_mali_0_1_parent_hws[] = { - &meson8b_xtal.hw, - &meson8b_mpll2.hw, - &meson8b_mpll1.hw, - &meson8b_fclk_div7.hw, - &meson8b_fclk_div4.hw, - &meson8b_fclk_div3.hw, - &meson8b_fclk_div5.hw, +static const struct clk_parent_data meson8b_mali_0_1_parent_data[] = { + { .fw_name = "xtal", .name = "xtal", .index = -1, }, + { .hw = &meson8b_mpll2.hw, }, + { .hw = &meson8b_mpll1.hw, }, + { .hw = &meson8b_fclk_div7.hw, }, + { .hw = &meson8b_fclk_div4.hw, }, + { .hw = &meson8b_fclk_div3.hw, }, + { .hw = &meson8b_fclk_div5.hw, }, }; static u32 meson8b_mali_0_1_mux_table[] = { 0, 2, 3, 4, 5, 6, 7 }; @@ -1789,8 +1800,8 @@ static struct clk_regmap meson8b_mali_0_sel = { .hw.init = &(struct clk_init_data){ .name = "mali_0_sel", .ops = &clk_regmap_mux_ops, - .parent_hws = meson8b_mali_0_1_parent_hws, - .num_parents = ARRAY_SIZE(meson8b_mali_0_1_parent_hws), + .parent_data = meson8b_mali_0_1_parent_data, + .num_parents = ARRAY_SIZE(meson8b_mali_0_1_parent_data), /* * Don't propagate rate changes up because the only changeable * parents are mpll1 and mpll2 but we need those for audio and @@ -1830,7 +1841,7 @@ static struct clk_regmap meson8b_mali_0 = { &meson8b_mali_0_div.hw }, .num_parents = 1, - .flags = CLK_SET_RATE_PARENT, + .flags = CLK_SET_RATE_GATE | CLK_SET_RATE_PARENT, }, }; @@ -1844,8 +1855,8 @@ static struct clk_regmap meson8b_mali_1_sel = { .hw.init = &(struct clk_init_data){ .name = "mali_1_sel", .ops = &clk_regmap_mux_ops, - .parent_hws = meson8b_mali_0_1_parent_hws, - .num_parents = ARRAY_SIZE(meson8b_mali_0_1_parent_hws), + .parent_data = meson8b_mali_0_1_parent_data, + .num_parents = ARRAY_SIZE(meson8b_mali_0_1_parent_data), /* * Don't propagate rate changes up because the only changeable * parents are mpll1 and mpll2 but we need those for audio and @@ -1885,7 +1896,7 @@ static struct clk_regmap meson8b_mali_1 = { &meson8b_mali_1_div.hw }, .num_parents = 1, - .flags = CLK_SET_RATE_PARENT, + .flags = CLK_SET_RATE_GATE | CLK_SET_RATE_PARENT, }, }; @@ -1944,8 +1955,10 @@ static struct clk_regmap meson8m2_gp_pll_dco = { .hw.init = &(struct clk_init_data){ .name = "gp_pll_dco", .ops = &meson_clk_pll_ops, - .parent_hws = (const struct clk_hw *[]) { - &meson8b_xtal.hw + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xtal", + .name = "xtal", + .index = -1, }, .num_parents = 1, }, @@ -3585,7 +3598,7 @@ static const struct reset_control_ops meson8b_clk_reset_ops = { struct meson8b_nb_data { struct notifier_block nb; - struct clk_hw_onecell_data *onecell_data; + struct clk_hw *cpu_clk; }; static int meson8b_cpu_clk_notifier_cb(struct notifier_block *nb, @@ -3593,30 +3606,25 @@ static int meson8b_cpu_clk_notifier_cb(struct notifier_block *nb, { struct meson8b_nb_data *nb_data = container_of(nb, struct meson8b_nb_data, nb); - struct clk_hw **hws = nb_data->onecell_data->hws; - struct clk_hw *cpu_clk_hw, *parent_clk_hw; - struct clk *cpu_clk, *parent_clk; + struct clk_hw *parent_clk; int ret; switch (event) { case PRE_RATE_CHANGE: - parent_clk_hw = hws[CLKID_XTAL]; + /* xtal */ + parent_clk = clk_hw_get_parent_by_index(nb_data->cpu_clk, 0); break; case POST_RATE_CHANGE: - parent_clk_hw = hws[CLKID_CPU_SCALE_OUT_SEL]; + /* cpu_scale_out_sel */ + parent_clk = clk_hw_get_parent_by_index(nb_data->cpu_clk, 1); break; default: return NOTIFY_DONE; } - cpu_clk_hw = hws[CLKID_CPUCLK]; - cpu_clk = __clk_lookup(clk_hw_get_name(cpu_clk_hw)); - - parent_clk = __clk_lookup(clk_hw_get_name(parent_clk_hw)); - - ret = clk_set_parent(cpu_clk, parent_clk); + ret = clk_hw_set_parent(nb_data->cpu_clk, parent_clk); if (ret) return notifier_from_errno(ret); @@ -3682,20 +3690,26 @@ static void __init meson8b_clkc_init_common(struct device_node *np, meson8b_clk_regmaps[i]->map = map; /* - * register all clks - * CLKID_UNUSED = 0, so skip it and start with CLKID_XTAL = 1 + * always skip CLKID_UNUSED and also skip XTAL if the .dtb provides the + * XTAL clock as input. */ - for (i = CLKID_XTAL; i < CLK_NR_CLKS; i++) { + if (!IS_ERR(of_clk_get_by_name(np, "xtal"))) + i = CLKID_PLL_FIXED; + else + i = CLKID_XTAL; + + /* register all clks */ + for (; i < CLK_NR_CLKS; i++) { /* array might be sparse */ if (!clk_hw_onecell_data->hws[i]) continue; - ret = clk_hw_register(NULL, clk_hw_onecell_data->hws[i]); + ret = of_clk_hw_register(np, clk_hw_onecell_data->hws[i]); if (ret) return; } - meson8b_cpu_nb_data.onecell_data = clk_hw_onecell_data; + meson8b_cpu_nb_data.cpu_clk = clk_hw_onecell_data->hws[CLKID_CPUCLK]; /* * FIXME we shouldn't program the muxes in notifier handlers. The diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig index 4cd846bc98cc..250d8165167a 100644 --- a/drivers/clk/renesas/Kconfig +++ b/drivers/clk/renesas/Kconfig @@ -20,8 +20,8 @@ config CLK_RENESAS select CLK_R8A7791 if ARCH_R8A7791 || ARCH_R8A7793 select CLK_R8A7792 if ARCH_R8A7792 select CLK_R8A7794 if ARCH_R8A7794 - select CLK_R8A7795 if ARCH_R8A7795 - select CLK_R8A77960 if ARCH_R8A77960 || ARCH_R8A7796 + select CLK_R8A7795 if ARCH_R8A77950 || ARCH_R8A77951 || ARCH_R8A7795 + select CLK_R8A77960 if ARCH_R8A77960 select CLK_R8A77961 if ARCH_R8A77961 select CLK_R8A77965 if ARCH_R8A77965 select CLK_R8A77970 if ARCH_R8A77970 diff --git a/drivers/clk/renesas/r7s9210-cpg-mssr.c b/drivers/clk/renesas/r7s9210-cpg-mssr.c index cf65d4e0e116..443bff08df4c 100644 --- a/drivers/clk/renesas/r7s9210-cpg-mssr.c +++ b/drivers/clk/renesas/r7s9210-cpg-mssr.c @@ -93,6 +93,7 @@ static const struct mssr_mod_clk r7s9210_mod_clks[] __initconst = { DEF_MOD_STB("ether1", 64, R7S9210_CLK_B), DEF_MOD_STB("ether0", 65, R7S9210_CLK_B), + DEF_MOD_STB("spibsc", 83, R7S9210_CLK_P1), DEF_MOD_STB("i2c3", 84, R7S9210_CLK_P1), DEF_MOD_STB("i2c2", 85, R7S9210_CLK_P1), DEF_MOD_STB("i2c1", 86, R7S9210_CLK_P1), diff --git a/drivers/clk/renesas/rcar-gen2-cpg.h b/drivers/clk/renesas/rcar-gen2-cpg.h index db2f57ef2f99..bdcd4a38d48d 100644 --- a/drivers/clk/renesas/rcar-gen2-cpg.h +++ b/drivers/clk/renesas/rcar-gen2-cpg.h @@ -24,10 +24,10 @@ enum rcar_gen2_clk_types { }; struct rcar_gen2_cpg_pll_config { - unsigned int extal_div; - unsigned int pll1_mult; - unsigned int pll3_mult; - unsigned int pll0_mult; /* leave as zero if PLL0CR exists */ + u8 extal_div; + u8 pll1_mult; + u8 pll3_mult; + u8 pll0_mult; /* leave as zero if PLL0CR exists */ }; struct clk *rcar_gen2_cpg_clk_register(struct device *dev, diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c index c97b647db9b6..488f8b3980c5 100644 --- a/drivers/clk/renesas/rcar-gen3-cpg.c +++ b/drivers/clk/renesas/rcar-gen3-cpg.c @@ -470,7 +470,8 @@ static struct clk * __init cpg_rpc_clk_register(const char *name, clk = clk_register_composite(NULL, name, &parent_name, 1, NULL, NULL, &rpc->div.hw, &clk_divider_ops, - &rpc->gate.hw, &clk_gate_ops, 0); + &rpc->gate.hw, &clk_gate_ops, + CLK_SET_RATE_PARENT); if (IS_ERR(clk)) { kfree(rpc); return clk; @@ -506,7 +507,8 @@ static struct clk * __init cpg_rpcd2_clk_register(const char *name, clk = clk_register_composite(NULL, name, &parent_name, 1, NULL, NULL, &rpcd2->fixed.hw, &clk_fixed_factor_ops, - &rpcd2->gate.hw, &clk_gate_ops, 0); + &rpcd2->gate.hw, &clk_gate_ops, + CLK_SET_RATE_PARENT); if (IS_ERR(clk)) kfree(rpcd2); diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c index 49bd7a4c015c..5f66bf879772 100644 --- a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c +++ b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c @@ -921,11 +921,26 @@ static const struct sunxi_ccu_desc sun50i_a64_ccu_desc = { .num_resets = ARRAY_SIZE(sun50i_a64_ccu_resets), }; +static struct ccu_pll_nb sun50i_a64_pll_cpu_nb = { + .common = &pll_cpux_clk.common, + /* copy from pll_cpux_clk */ + .enable = BIT(31), + .lock = BIT(28), +}; + +static struct ccu_mux_nb sun50i_a64_cpu_nb = { + .common = &cpux_clk.common, + .cm = &cpux_clk.mux, + .delay_us = 1, /* > 8 clock cycles at 24 MHz */ + .bypass_index = 1, /* index of 24 MHz oscillator */ +}; + static int sun50i_a64_ccu_probe(struct platform_device *pdev) { struct resource *res; void __iomem *reg; u32 val; + int ret; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); reg = devm_ioremap_resource(&pdev->dev, res); @@ -939,7 +954,18 @@ static int sun50i_a64_ccu_probe(struct platform_device *pdev) writel(0x515, reg + SUN50I_A64_PLL_MIPI_REG); - return sunxi_ccu_probe(pdev->dev.of_node, reg, &sun50i_a64_ccu_desc); + ret = sunxi_ccu_probe(pdev->dev.of_node, reg, &sun50i_a64_ccu_desc); + if (ret) + return ret; + + /* Gate then ungate PLL CPU after any rate changes */ + ccu_pll_notifier_register(&sun50i_a64_pll_cpu_nb); + + /* Reparent CPU during PLL CPU rate changes */ + ccu_mux_notifier_register(pll_cpux_clk.common.hw.clk, + &sun50i_a64_cpu_nb); + + return 0; } static const struct of_device_id sun50i_a64_ccu_ids[] = { diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-a64.h b/drivers/clk/sunxi-ng/ccu-sun50i-a64.h index 979929276709..116e6f826d04 100644 --- a/drivers/clk/sunxi-ng/ccu-sun50i-a64.h +++ b/drivers/clk/sunxi-ng/ccu-sun50i-a64.h @@ -36,7 +36,6 @@ #define CLK_PLL_HSIC 18 #define CLK_PLL_DE 19 #define CLK_PLL_DDR1 20 -#define CLK_CPUX 21 #define CLK_AXI 22 #define CLK_APB 23 #define CLK_AHB1 24 diff --git a/drivers/clk/sunxi-ng/ccu-sun6i-a31.h b/drivers/clk/sunxi-ng/ccu-sun6i-a31.h index a361388b4670..3ed2a59b0dc6 100644 --- a/drivers/clk/sunxi-ng/ccu-sun6i-a31.h +++ b/drivers/clk/sunxi-ng/ccu-sun6i-a31.h @@ -32,7 +32,9 @@ /* The PLL_VIDEO1_2X clock is exported */ #define CLK_PLL_GPU 14 -#define CLK_PLL_MIPI 15 + +/* The PLL_VIDEO1_2X clock is exported */ + #define CLK_PLL9 16 #define CLK_PLL10 17 diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-a23-a33.h b/drivers/clk/sunxi-ng/ccu-sun8i-a23-a33.h index 72df69291cc6..5bf5c4d13b4c 100644 --- a/drivers/clk/sunxi-ng/ccu-sun8i-a23-a33.h +++ b/drivers/clk/sunxi-ng/ccu-sun8i-a23-a33.h @@ -24,7 +24,9 @@ #define CLK_PLL_PERIPH 10 #define CLK_PLL_PERIPH_2X 11 #define CLK_PLL_GPU 12 -#define CLK_PLL_MIPI 13 + +/* The PLL MIPI clock is exported */ + #define CLK_PLL_HSIC 14 #define CLK_PLL_DE 15 #define CLK_PLL_DDR1 16 diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-r40.h b/drivers/clk/sunxi-ng/ccu-sun8i-r40.h index a69637b6b0c1..6f7071df8e1c 100644 --- a/drivers/clk/sunxi-ng/ccu-sun8i-r40.h +++ b/drivers/clk/sunxi-ng/ccu-sun8i-r40.h @@ -55,10 +55,6 @@ /* Some more module clocks are exported */ -#define CLK_MBUS 155 - -/* Another bunch of module clocks are exported */ - #define CLK_NUMBER (CLK_OUTB + 1) #endif /* _CCU_SUN8I_R40_H_ */ diff --git a/drivers/clk/sunxi/clk-sun6i-apb0-gates.c b/drivers/clk/sunxi/clk-sun6i-apb0-gates.c index a165e7172346..4c75b0770c74 100644 --- a/drivers/clk/sunxi/clk-sun6i-apb0-gates.c +++ b/drivers/clk/sunxi/clk-sun6i-apb0-gates.c @@ -37,7 +37,6 @@ static int sun6i_a31_apb0_gates_clk_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct clk_onecell_data *clk_data; - const struct of_device_id *device; const struct gates_data *data; const char *clk_parent; const char *clk_name; @@ -50,10 +49,9 @@ static int sun6i_a31_apb0_gates_clk_probe(struct platform_device *pdev) if (!np) return -ENODEV; - device = of_match_device(sun6i_a31_apb0_gates_clk_dt_ids, &pdev->dev); - if (!device) + data = of_device_get_match_data(&pdev->dev); + if (!data) return -ENODEV; - data = device->data; r = platform_get_resource(pdev, IORESOURCE_MEM, 0); reg = devm_ioremap_resource(&pdev->dev, r); diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c index 8f6100db90ed..1c894548dd72 100644 --- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c +++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c @@ -751,9 +751,9 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) snprintf(parent4, 32, "dsi%d_pll_post_out_div_clk", pll_10nm->id); hw = clk_hw_register_mux(dev, clk_name, - (const char *[]){ + ((const char *[]){ parent, parent2, parent3, parent4 - }, 4, 0, pll_10nm->phy_cmn_mmio + + }), 4, 0, pll_10nm->phy_cmn_mmio + REG_DSI_10nm_PHY_CMN_CLK_CFG1, 0, 2, 0, NULL); if (IS_ERR(hw)) { diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm.c index 8c99e01ae332..6dffd7f4a99b 100644 --- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm.c +++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm.c @@ -554,9 +554,9 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm) snprintf(parent1, 32, "dsi%dvco_clk", pll_28nm->id); snprintf(parent2, 32, "dsi%dindirect_path_div2_clk", pll_28nm->id); clks[num++] = clk_register_mux(dev, clk_name, - (const char *[]){ + ((const char *[]){ parent1, parent2 - }, 2, CLK_SET_RATE_PARENT, pll_28nm->mmio + + }), 2, CLK_SET_RATE_PARENT, pll_28nm->mmio + REG_DSI_28nm_PHY_PLL_VREG_CFG, 1, 1, 0, NULL); snprintf(clk_name, 32, "dsi%dpllbyte", pll_28nm->id); diff --git a/include/dt-bindings/clock/meson8-ddr-clkc.h b/include/dt-bindings/clock/meson8-ddr-clkc.h new file mode 100644 index 000000000000..a8e0fa2987ab --- /dev/null +++ b/include/dt-bindings/clock/meson8-ddr-clkc.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#define DDR_CLKID_DDR_PLL_DCO 0 +#define DDR_CLKID_DDR_PLL 1 diff --git a/include/dt-bindings/clock/sun50i-a64-ccu.h b/include/dt-bindings/clock/sun50i-a64-ccu.h index a8ac4cfcdcbc..e512a1c9b0fc 100644 --- a/include/dt-bindings/clock/sun50i-a64-ccu.h +++ b/include/dt-bindings/clock/sun50i-a64-ccu.h @@ -46,6 +46,7 @@ #define CLK_PLL_VIDEO0 7 #define CLK_PLL_PERIPH0 11 +#define CLK_CPUX 21 #define CLK_BUS_MIPI_DSI 28 #define CLK_BUS_CE 29 #define CLK_BUS_DMA 30 diff --git a/include/dt-bindings/clock/sun6i-a31-ccu.h b/include/dt-bindings/clock/sun6i-a31-ccu.h index c5d13340184a..39878d9dce9f 100644 --- a/include/dt-bindings/clock/sun6i-a31-ccu.h +++ b/include/dt-bindings/clock/sun6i-a31-ccu.h @@ -49,6 +49,8 @@ #define CLK_PLL_VIDEO1_2X 13 +#define CLK_PLL_MIPI 15 + #define CLK_CPU 18 #define CLK_AHB1_MIPIDSI 23 diff --git a/include/dt-bindings/clock/sun8i-a23-a33-ccu.h b/include/dt-bindings/clock/sun8i-a23-a33-ccu.h index f8222b6b2cc3..eb524d0bbd01 100644 --- a/include/dt-bindings/clock/sun8i-a23-a33-ccu.h +++ b/include/dt-bindings/clock/sun8i-a23-a33-ccu.h @@ -43,6 +43,8 @@ #ifndef _DT_BINDINGS_CLK_SUN8I_A23_A33_H_ #define _DT_BINDINGS_CLK_SUN8I_A23_A33_H_ +#define CLK_PLL_MIPI 13 + #define CLK_CPUX 18 #define CLK_BUS_MIPI_DSI 23 diff --git a/include/dt-bindings/clock/sun8i-r40-ccu.h b/include/dt-bindings/clock/sun8i-r40-ccu.h index f9e15a235626..d7337b55a4ef 100644 --- a/include/dt-bindings/clock/sun8i-r40-ccu.h +++ b/include/dt-bindings/clock/sun8i-r40-ccu.h @@ -176,7 +176,7 @@ #define CLK_AVS 152 #define CLK_HDMI 153 #define CLK_HDMI_SLOW 154 - +#define CLK_MBUS 155 #define CLK_DSI_DPHY 156 #define CLK_TVE0 157 #define CLK_TVE1 158 diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 013dc667a500..3f66b5e440e7 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -328,29 +328,119 @@ struct clk_hw { * struct clk_fixed_rate - fixed-rate clock * @hw: handle between common and hardware-specific interfaces * @fixed_rate: constant frequency of clock + * @fixed_accuracy: constant accuracy of clock in ppb (parts per billion) + * @flags: hardware specific flags + * + * Flags: + * * CLK_FIXED_RATE_PARENT_ACCURACY - Use the accuracy of the parent clk + * instead of what's set in @fixed_accuracy. */ struct clk_fixed_rate { struct clk_hw hw; unsigned long fixed_rate; unsigned long fixed_accuracy; + unsigned long flags; }; -#define to_clk_fixed_rate(_hw) container_of(_hw, struct clk_fixed_rate, hw) +#define CLK_FIXED_RATE_PARENT_ACCURACY BIT(0) extern const struct clk_ops clk_fixed_rate_ops; +struct clk_hw *__clk_hw_register_fixed_rate(struct device *dev, + struct device_node *np, const char *name, + const char *parent_name, const struct clk_hw *parent_hw, + const struct clk_parent_data *parent_data, unsigned long flags, + unsigned long fixed_rate, unsigned long fixed_accuracy, + unsigned long clk_fixed_flags); struct clk *clk_register_fixed_rate(struct device *dev, const char *name, const char *parent_name, unsigned long flags, unsigned long fixed_rate); -struct clk_hw *clk_hw_register_fixed_rate(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - unsigned long fixed_rate); -struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev, - const char *name, const char *parent_name, unsigned long flags, - unsigned long fixed_rate, unsigned long fixed_accuracy); +/** + * clk_hw_register_fixed_rate - register fixed-rate clock with the clock + * framework + * @dev: device that is registering this clock + * @name: name of this clock + * @parent_name: name of clock's parent + * @flags: framework-specific flags + * @fixed_rate: non-adjustable clock rate + */ +#define clk_hw_register_fixed_rate(dev, name, parent_name, flags, fixed_rate) \ + __clk_hw_register_fixed_rate((dev), NULL, (name), (parent_name), NULL, \ + NULL, (flags), (fixed_rate), 0, 0) +/** + * clk_hw_register_fixed_rate_parent_hw - register fixed-rate clock with + * the clock framework + * @dev: device that is registering this clock + * @name: name of this clock + * @parent_hw: pointer to parent clk + * @flags: framework-specific flags + * @fixed_rate: non-adjustable clock rate + */ +#define clk_hw_register_fixed_rate_parent_hw(dev, name, parent_hw, flags, \ + fixed_rate) \ + __clk_hw_register_fixed_rate((dev), NULL, (name), NULL, (parent_hw), \ + NULL, (flags), (fixed_rate), 0, 0) +/** + * clk_hw_register_fixed_rate_parent_data - register fixed-rate clock with + * the clock framework + * @dev: device that is registering this clock + * @name: name of this clock + * @parent_data: parent clk data + * @flags: framework-specific flags + * @fixed_rate: non-adjustable clock rate + */ +#define clk_hw_register_fixed_rate_parent_data(dev, name, parent_hw, flags, \ + fixed_rate) \ + __clk_hw_register_fixed_rate((dev), NULL, (name), NULL, NULL, \ + (parent_data), (flags), (fixed_rate), 0, \ + 0) +/** + * clk_hw_register_fixed_rate_with_accuracy - register fixed-rate clock with + * the clock framework + * @dev: device that is registering this clock + * @name: name of this clock + * @parent_name: name of clock's parent + * @flags: framework-specific flags + * @fixed_rate: non-adjustable clock rate + * @fixed_accuracy: non-adjustable clock accuracy + */ +#define clk_hw_register_fixed_rate_with_accuracy(dev, name, parent_name, \ + flags, fixed_rate, \ + fixed_accuracy) \ + __clk_hw_register_fixed_rate((dev), NULL, (name), (parent_name), \ + NULL, NULL, (flags), (fixed_rate), \ + (fixed_accuracy), 0) +/** + * clk_hw_register_fixed_rate_with_accuracy_parent_hw - register fixed-rate + * clock with the clock framework + * @dev: device that is registering this clock + * @name: name of this clock + * @parent_hw: pointer to parent clk + * @flags: framework-specific flags + * @fixed_rate: non-adjustable clock rate + * @fixed_accuracy: non-adjustable clock accuracy + */ +#define clk_hw_register_fixed_rate_with_accuracy_parent_hw(dev, name, \ + parent_hw, flags, fixed_rate, fixed_accuracy) \ + __clk_hw_register_fixed_rate((dev), NULL, (name), NULL, (parent_hw) \ + NULL, NULL, (flags), (fixed_rate), \ + (fixed_accuracy), 0) +/** + * clk_hw_register_fixed_rate_with_accuracy_parent_data - register fixed-rate + * clock with the clock framework + * @dev: device that is registering this clock + * @name: name of this clock + * @parent_name: name of clock's parent + * @flags: framework-specific flags + * @fixed_rate: non-adjustable clock rate + * @fixed_accuracy: non-adjustable clock accuracy + */ +#define clk_hw_register_fixed_rate_with_accuracy_parent_data(dev, name, \ + parent_data, flags, fixed_rate, fixed_accuracy) \ + __clk_hw_register_fixed_rate((dev), NULL, (name), NULL, NULL, \ + (parent_data), NULL, (flags), \ + (fixed_rate), (fixed_accuracy), 0) + void clk_unregister_fixed_rate(struct clk *clk); -struct clk_hw *clk_hw_register_fixed_rate_with_accuracy(struct device *dev, - const char *name, const char *parent_name, unsigned long flags, - unsigned long fixed_rate, unsigned long fixed_accuracy); void clk_hw_unregister_fixed_rate(struct clk_hw *hw); void of_fixed_clk_setup(struct device_node *np); @@ -393,14 +483,67 @@ struct clk_gate { #define CLK_GATE_BIG_ENDIAN BIT(2) extern const struct clk_ops clk_gate_ops; -struct clk *clk_register_gate(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, +struct clk_hw *__clk_hw_register_gate(struct device *dev, + struct device_node *np, const char *name, + const char *parent_name, const struct clk_hw *parent_hw, + const struct clk_parent_data *parent_data, + unsigned long flags, void __iomem *reg, u8 bit_idx, u8 clk_gate_flags, spinlock_t *lock); -struct clk_hw *clk_hw_register_gate(struct device *dev, const char *name, +struct clk *clk_register_gate(struct device *dev, const char *name, const char *parent_name, unsigned long flags, void __iomem *reg, u8 bit_idx, u8 clk_gate_flags, spinlock_t *lock); +/** + * clk_hw_register_gate - register a gate clock with the clock framework + * @dev: device that is registering this clock + * @name: name of this clock + * @parent_name: name of this clock's parent + * @flags: framework-specific flags for this clock + * @reg: register address to control gating of this clock + * @bit_idx: which bit in the register controls gating of this clock + * @clk_gate_flags: gate-specific flags for this clock + * @lock: shared register lock for this clock + */ +#define clk_hw_register_gate(dev, name, parent_name, flags, reg, bit_idx, \ + clk_gate_flags, lock) \ + __clk_hw_register_gate((dev), NULL, (name), (parent_name), NULL, \ + NULL, (flags), (reg), (bit_idx), \ + (clk_gate_flags), (lock)) +/** + * clk_hw_register_gate_parent_hw - register a gate clock with the clock + * framework + * @dev: device that is registering this clock + * @name: name of this clock + * @parent_hw: pointer to parent clk + * @flags: framework-specific flags for this clock + * @reg: register address to control gating of this clock + * @bit_idx: which bit in the register controls gating of this clock + * @clk_gate_flags: gate-specific flags for this clock + * @lock: shared register lock for this clock + */ +#define clk_hw_register_gate_parent_hw(dev, name, parent_name, flags, reg, \ + bit_idx, clk_gate_flags, lock) \ + __clk_hw_register_gate((dev), NULL, (name), (parent_name), NULL, \ + NULL, (flags), (reg), (bit_idx), \ + (clk_gate_flags), (lock)) +/** + * clk_hw_register_gate_parent_data - register a gate clock with the clock + * framework + * @dev: device that is registering this clock + * @name: name of this clock + * @parent_data: parent clk data + * @flags: framework-specific flags for this clock + * @reg: register address to control gating of this clock + * @bit_idx: which bit in the register controls gating of this clock + * @clk_gate_flags: gate-specific flags for this clock + * @lock: shared register lock for this clock + */ +#define clk_hw_register_gate_parent_data(dev, name, parent_name, flags, reg, \ + bit_idx, clk_gate_flags, lock) \ + __clk_hw_register_gate((dev), NULL, (name), (parent_name), NULL, \ + NULL, (flags), (reg), (bit_idx), \ + (clk_gate_flags), (lock)) void clk_unregister_gate(struct clk *clk); void clk_hw_unregister_gate(struct clk_hw *hw); int clk_gate_is_enabled(struct clk_hw *hw); @@ -490,24 +633,153 @@ int divider_get_val(unsigned long rate, unsigned long parent_rate, const struct clk_div_table *table, u8 width, unsigned long flags); -struct clk *clk_register_divider(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, spinlock_t *lock); -struct clk_hw *clk_hw_register_divider(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, spinlock_t *lock); +struct clk_hw *__clk_hw_register_divider(struct device *dev, + struct device_node *np, const char *name, + const char *parent_name, const struct clk_hw *parent_hw, + const struct clk_parent_data *parent_data, unsigned long flags, + void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags, + const struct clk_div_table *table, spinlock_t *lock); struct clk *clk_register_divider_table(struct device *dev, const char *name, const char *parent_name, unsigned long flags, void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags, const struct clk_div_table *table, spinlock_t *lock); -struct clk_hw *clk_hw_register_divider_table(struct device *dev, - const char *name, const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, const struct clk_div_table *table, - spinlock_t *lock); +/** + * clk_register_divider - register a divider clock with the clock framework + * @dev: device registering this clock + * @name: name of this clock + * @parent_name: name of clock's parent + * @flags: framework-specific flags + * @reg: register address to adjust divider + * @shift: number of bits to shift the bitfield + * @width: width of the bitfield + * @clk_divider_flags: divider-specific flags for this clock + * @lock: shared register lock for this clock + */ +#define clk_register_divider(dev, name, parent_name, flags, reg, shift, width, \ + clk_divider_flags, lock) \ + clk_register_divider_table((dev), (name), (parent_name), (flags), \ + (reg), (shift), (width), \ + (clk_divider_flags), NULL, (lock)) +/** + * clk_hw_register_divider - register a divider clock with the clock framework + * @dev: device registering this clock + * @name: name of this clock + * @parent_name: name of clock's parent + * @flags: framework-specific flags + * @reg: register address to adjust divider + * @shift: number of bits to shift the bitfield + * @width: width of the bitfield + * @clk_divider_flags: divider-specific flags for this clock + * @lock: shared register lock for this clock + */ +#define clk_hw_register_divider(dev, name, parent_name, flags, reg, shift, \ + width, clk_divider_flags, lock) \ + __clk_hw_register_divider((dev), NULL, (name), (parent_name), NULL, \ + NULL, (flags), (reg), (shift), (width), \ + (clk_divider_flags), NULL, (lock)) +/** + * clk_hw_register_divider_parent_hw - register a divider clock with the clock + * framework + * @dev: device registering this clock + * @name: name of this clock + * @parent_hw: pointer to parent clk + * @flags: framework-specific flags + * @reg: register address to adjust divider + * @shift: number of bits to shift the bitfield + * @width: width of the bitfield + * @clk_divider_flags: divider-specific flags for this clock + * @lock: shared register lock for this clock + */ +#define clk_hw_register_divider_parent_hw(dev, name, parent_hw, flags, reg, \ + shift, width, clk_divider_flags, \ + lock) \ + __clk_hw_register_divider((dev), NULL, (name), NULL, (parent_hw), \ + NULL, (flags), (reg), (shift), (width), \ + (clk_divider_flags), NULL, (lock)) +/** + * clk_hw_register_divider_parent_data - register a divider clock with the clock + * framework + * @dev: device registering this clock + * @name: name of this clock + * @parent_data: parent clk data + * @flags: framework-specific flags + * @reg: register address to adjust divider + * @shift: number of bits to shift the bitfield + * @width: width of the bitfield + * @clk_divider_flags: divider-specific flags for this clock + * @lock: shared register lock for this clock + */ +#define clk_hw_register_divider_parent_data(dev, name, parent_data, flags, \ + reg, shift, width, \ + clk_divider_flags, lock) \ + __clk_hw_register_divider((dev), NULL, (name), NULL, NULL, \ + (parent_data), (flags), (reg), (shift), \ + (width), (clk_divider_flags), NULL, (lock)) +/** + * clk_hw_register_divider_table - register a table based divider clock with + * the clock framework + * @dev: device registering this clock + * @name: name of this clock + * @parent_name: name of clock's parent + * @flags: framework-specific flags + * @reg: register address to adjust divider + * @shift: number of bits to shift the bitfield + * @width: width of the bitfield + * @clk_divider_flags: divider-specific flags for this clock + * @table: array of divider/value pairs ending with a div set to 0 + * @lock: shared register lock for this clock + */ +#define clk_hw_register_divider_table(dev, name, parent_name, flags, reg, \ + shift, width, clk_divider_flags, table, \ + lock) \ + __clk_hw_register_divider((dev), NULL, (name), (parent_name), NULL, \ + NULL, (flags), (reg), (shift), (width), \ + (clk_divider_flags), (table), (lock)) +/** + * clk_hw_register_divider_table_parent_hw - register a table based divider + * clock with the clock framework + * @dev: device registering this clock + * @name: name of this clock + * @parent_hw: pointer to parent clk + * @flags: framework-specific flags + * @reg: register address to adjust divider + * @shift: number of bits to shift the bitfield + * @width: width of the bitfield + * @clk_divider_flags: divider-specific flags for this clock + * @table: array of divider/value pairs ending with a div set to 0 + * @lock: shared register lock for this clock + */ +#define clk_hw_register_divider_table_parent_hw(dev, name, parent_hw, flags, \ + reg, shift, width, \ + clk_divider_flags, table, \ + lock) \ + __clk_hw_register_divider((dev), NULL, (name), NULL, (parent_hw), \ + NULL, (flags), (reg), (shift), (width), \ + (clk_divider_flags), (table), (lock)) +/** + * clk_hw_register_divider_table_parent_data - register a table based divider + * clock with the clock framework + * @dev: device registering this clock + * @name: name of this clock + * @parent_data: parent clk data + * @flags: framework-specific flags + * @reg: register address to adjust divider + * @shift: number of bits to shift the bitfield + * @width: width of the bitfield + * @clk_divider_flags: divider-specific flags for this clock + * @table: array of divider/value pairs ending with a div set to 0 + * @lock: shared register lock for this clock + */ +#define clk_hw_register_divider_table_parent_data(dev, name, parent_data, \ + flags, reg, shift, width, \ + clk_divider_flags, table, \ + lock) \ + __clk_hw_register_divider((dev), NULL, (name), NULL, NULL, \ + (parent_data), (flags), (reg), (shift), \ + (width), (clk_divider_flags), (table), \ + (lock)) + void clk_unregister_divider(struct clk *clk); void clk_hw_unregister_divider(struct clk_hw *hw); @@ -562,28 +834,48 @@ struct clk_mux { extern const struct clk_ops clk_mux_ops; extern const struct clk_ops clk_mux_ro_ops; -struct clk *clk_register_mux(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, - unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_mux_flags, spinlock_t *lock); -struct clk_hw *clk_hw_register_mux(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, - unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_mux_flags, spinlock_t *lock); - -struct clk *clk_register_mux_table(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, - unsigned long flags, - void __iomem *reg, u8 shift, u32 mask, +struct clk_hw *__clk_hw_register_mux(struct device *dev, struct device_node *np, + const char *name, u8 num_parents, + const char * const *parent_names, + const struct clk_hw **parent_hws, + const struct clk_parent_data *parent_data, + unsigned long flags, void __iomem *reg, u8 shift, u32 mask, u8 clk_mux_flags, u32 *table, spinlock_t *lock); -struct clk_hw *clk_hw_register_mux_table(struct device *dev, const char *name, +struct clk *clk_register_mux_table(struct device *dev, const char *name, const char * const *parent_names, u8 num_parents, - unsigned long flags, - void __iomem *reg, u8 shift, u32 mask, + unsigned long flags, void __iomem *reg, u8 shift, u32 mask, u8 clk_mux_flags, u32 *table, spinlock_t *lock); +#define clk_register_mux(dev, name, parent_names, num_parents, flags, reg, \ + shift, width, clk_mux_flags, lock) \ + clk_register_mux_table((dev), (name), (parent_names), (num_parents), \ + (flags), (reg), (shift), BIT((width)) - 1, \ + (clk_mux_flags), NULL, (lock)) +#define clk_hw_register_mux_table(dev, name, parent_names, num_parents, \ + flags, reg, shift, mask, clk_mux_flags, \ + table, lock) \ + __clk_hw_register_mux((dev), NULL, (name), (num_parents), \ + (parent_names), NULL, NULL, (flags), (reg), \ + (shift), (mask), (clk_mux_flags), (table), \ + (lock)) +#define clk_hw_register_mux(dev, name, parent_names, num_parents, flags, reg, \ + shift, width, clk_mux_flags, lock) \ + __clk_hw_register_mux((dev), NULL, (name), (num_parents), \ + (parent_names), NULL, NULL, (flags), (reg), \ + (shift), BIT((width)) - 1, (clk_mux_flags), \ + NULL, (lock)) +#define clk_hw_register_mux_hws(dev, name, parent_hws, num_parents, flags, \ + reg, shift, width, clk_mux_flags, lock) \ + __clk_hw_register_mux((dev), NULL, (name), (num_parents), NULL, \ + (parent_hws), NULL, (flags), (reg), (shift), \ + BIT((width)) - 1, (clk_mux_flags), NULL, (lock)) +#define clk_hw_register_mux_parent_data(dev, name, parent_data, num_parents, \ + flags, reg, shift, width, \ + clk_mux_flags, lock) \ + __clk_hw_register_mux((dev), NULL, (name), (num_parents), NULL, NULL, \ + (parent_data), (flags), (reg), (shift), \ + BIT((width)) - 1, (clk_mux_flags), NULL, (lock)) + int clk_mux_val_to_index(struct clk_hw *hw, u32 *table, unsigned int flags, unsigned int val); unsigned int clk_mux_index_to_val(u32 *table, unsigned int flags, u8 index); @@ -759,44 +1051,6 @@ struct clk_hw *clk_hw_register_composite(struct device *dev, const char *name, unsigned long flags); void clk_hw_unregister_composite(struct clk_hw *hw); -/** - * struct clk_gpio - gpio gated clock - * - * @hw: handle between common and hardware-specific interfaces - * @gpiod: gpio descriptor - * - * Clock with a gpio control for enabling and disabling the parent clock - * or switching between two parents by asserting or deasserting the gpio. - * - * Implements .enable, .disable and .is_enabled or - * .get_parent, .set_parent and .determine_rate depending on which clk_ops - * is used. - */ -struct clk_gpio { - struct clk_hw hw; - struct gpio_desc *gpiod; -}; - -#define to_clk_gpio(_hw) container_of(_hw, struct clk_gpio, hw) - -extern const struct clk_ops clk_gpio_gate_ops; -struct clk *clk_register_gpio_gate(struct device *dev, const char *name, - const char *parent_name, struct gpio_desc *gpiod, - unsigned long flags); -struct clk_hw *clk_hw_register_gpio_gate(struct device *dev, const char *name, - const char *parent_name, struct gpio_desc *gpiod, - unsigned long flags); -void clk_hw_unregister_gpio_gate(struct clk_hw *hw); - -extern const struct clk_ops clk_gpio_mux_ops; -struct clk *clk_register_gpio_mux(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, struct gpio_desc *gpiod, - unsigned long flags); -struct clk_hw *clk_hw_register_gpio_mux(struct device *dev, const char *name, - const char * const *parent_names, u8 num_parents, struct gpio_desc *gpiod, - unsigned long flags); -void clk_hw_unregister_gpio_mux(struct clk_hw *hw); - struct clk *clk_register(struct device *dev, struct clk_hw *hw); struct clk *devm_clk_register(struct device *dev, struct clk_hw *hw); diff --git a/include/linux/clk.h b/include/linux/clk.h index 18b7b95a8253..7fd6a1febcf4 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -627,6 +627,9 @@ long clk_round_rate(struct clk *clk, unsigned long rate); * @clk: clock source * @rate: desired clock rate in Hz * + * Updating the rate starts at the top-most affected clock and then + * walks the tree down to the bottom-most clock that needs updating. + * * Returns success (0) or negative errno. */ int clk_set_rate(struct clk *clk, unsigned long rate); |