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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /drivers/clk/meson/clkc.h | |
parent | Initial commit. (diff) | |
download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/clk/meson/clkc.h')
-rw-r--r-- | drivers/clk/meson/clkc.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/drivers/clk/meson/clkc.h b/drivers/clk/meson/clkc.h new file mode 100644 index 000000000..24cec16b6 --- /dev/null +++ b/drivers/clk/meson/clkc.h @@ -0,0 +1,124 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2015 Endless Mobile, Inc. + * Author: Carlo Caione <carlo@endlessm.com> + */ + +#ifndef __CLKC_H +#define __CLKC_H + +#include <linux/clk-provider.h> +#include "clk-regmap.h" + +#define PMASK(width) GENMASK(width - 1, 0) +#define SETPMASK(width, shift) GENMASK(shift + width - 1, shift) +#define CLRPMASK(width, shift) (~SETPMASK(width, shift)) + +#define PARM_GET(width, shift, reg) \ + (((reg) & SETPMASK(width, shift)) >> (shift)) +#define PARM_SET(width, shift, reg, val) \ + (((reg) & CLRPMASK(width, shift)) | ((val) << (shift))) + +#define MESON_PARM_APPLICABLE(p) (!!((p)->width)) + +struct parm { + u16 reg_off; + u8 shift; + u8 width; +}; + +static inline unsigned int meson_parm_read(struct regmap *map, struct parm *p) +{ + unsigned int val; + + regmap_read(map, p->reg_off, &val); + return PARM_GET(p->width, p->shift, val); +} + +static inline void meson_parm_write(struct regmap *map, struct parm *p, + unsigned int val) +{ + regmap_update_bits(map, p->reg_off, SETPMASK(p->width, p->shift), + val << p->shift); +} + + +struct pll_rate_table { + unsigned long rate; + u16 m; + u16 n; + u16 od; + u16 od2; + u16 od3; +}; + +#define PLL_RATE(_r, _m, _n, _od) \ + { \ + .rate = (_r), \ + .m = (_m), \ + .n = (_n), \ + .od = (_od), \ + } + +#define CLK_MESON_PLL_ROUND_CLOSEST BIT(0) + +struct meson_clk_pll_data { + struct parm m; + struct parm n; + struct parm frac; + struct parm od; + struct parm od2; + struct parm od3; + struct parm l; + struct parm rst; + const struct reg_sequence *init_regs; + unsigned int init_count; + const struct pll_rate_table *table; + u8 flags; +}; + +#define to_meson_clk_pll(_hw) container_of(_hw, struct meson_clk_pll, hw) + +struct meson_clk_mpll_data { + struct parm sdm; + struct parm sdm_en; + struct parm n2; + struct parm ssen; + struct parm misc; + spinlock_t *lock; + u8 flags; +}; + +#define CLK_MESON_MPLL_ROUND_CLOSEST BIT(0) + +struct meson_clk_phase_data { + struct parm ph; +}; + +int meson_clk_degrees_from_val(unsigned int val, unsigned int width); +unsigned int meson_clk_degrees_to_val(int degrees, unsigned int width); + +#define MESON_GATE(_name, _reg, _bit) \ +struct clk_regmap _name = { \ + .data = &(struct clk_regmap_gate_data){ \ + .offset = (_reg), \ + .bit_idx = (_bit), \ + }, \ + .hw.init = &(struct clk_init_data) { \ + .name = #_name, \ + .ops = &clk_regmap_gate_ops, \ + .parent_names = (const char *[]){ "clk81" }, \ + .num_parents = 1, \ + .flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED), \ + }, \ +}; + +/* clk_ops */ +extern const struct clk_ops meson_clk_pll_ro_ops; +extern const struct clk_ops meson_clk_pll_ops; +extern const struct clk_ops meson_clk_cpu_ops; +extern const struct clk_ops meson_clk_mpll_ro_ops; +extern const struct clk_ops meson_clk_mpll_ops; +extern const struct clk_ops meson_clk_phase_ops; + +#endif /* __CLKC_H */ |