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Diffstat (limited to 'kernel/drivers/clk/rockchip/clk.h')
| -rw-r--r-- | kernel/drivers/clk/rockchip/clk.h | 427 |
1 files changed, 427 insertions, 0 deletions
diff --git a/kernel/drivers/clk/rockchip/clk.h b/kernel/drivers/clk/rockchip/clk.h new file mode 100644 index 000000000..e63cafe89 --- /dev/null +++ b/kernel/drivers/clk/rockchip/clk.h @@ -0,0 +1,427 @@ +/* + * Copyright (c) 2014 MundoReader S.L. + * Author: Heiko Stuebner <heiko@sntech.de> + * + * based on + * + * samsung/clk.h + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * Copyright (c) 2013 Linaro Ltd. + * Author: Thomas Abraham <thomas.ab@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef CLK_ROCKCHIP_CLK_H +#define CLK_ROCKCHIP_CLK_H + +#include <linux/io.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> + +#define HIWORD_UPDATE(val, mask, shift) \ + ((val) << (shift) | (mask) << ((shift) + 16)) + +/* register positions shared by RK2928, RK3066 and RK3188 */ +#define RK2928_PLL_CON(x) (x * 0x4) +#define RK2928_MODE_CON 0x40 +#define RK2928_CLKSEL_CON(x) (x * 0x4 + 0x44) +#define RK2928_CLKGATE_CON(x) (x * 0x4 + 0xd0) +#define RK2928_GLB_SRST_FST 0x100 +#define RK2928_GLB_SRST_SND 0x104 +#define RK2928_SOFTRST_CON(x) (x * 0x4 + 0x110) +#define RK2928_MISC_CON 0x134 + +#define RK3288_PLL_CON(x) RK2928_PLL_CON(x) +#define RK3288_MODE_CON 0x50 +#define RK3288_CLKSEL_CON(x) (x * 0x4 + 0x60) +#define RK3288_CLKGATE_CON(x) (x * 0x4 + 0x160) +#define RK3288_GLB_SRST_FST 0x1b0 +#define RK3288_GLB_SRST_SND 0x1b4 +#define RK3288_SOFTRST_CON(x) (x * 0x4 + 0x1b8) +#define RK3288_MISC_CON 0x1e8 +#define RK3288_SDMMC_CON0 0x200 +#define RK3288_SDMMC_CON1 0x204 +#define RK3288_SDIO0_CON0 0x208 +#define RK3288_SDIO0_CON1 0x20c +#define RK3288_SDIO1_CON0 0x210 +#define RK3288_SDIO1_CON1 0x214 +#define RK3288_EMMC_CON0 0x218 +#define RK3288_EMMC_CON1 0x21c + +enum rockchip_pll_type { + pll_rk3066, +}; + +#define RK3066_PLL_RATE(_rate, _nr, _nf, _no) \ +{ \ + .rate = _rate##U, \ + .nr = _nr, \ + .nf = _nf, \ + .no = _no, \ + .bwadj = (_nf >> 1), \ +} + +#define RK3066_PLL_RATE_BWADJ(_rate, _nr, _nf, _no, _bw) \ +{ \ + .rate = _rate##U, \ + .nr = _nr, \ + .nf = _nf, \ + .no = _no, \ + .bwadj = _bw, \ +} + +struct rockchip_pll_rate_table { + unsigned long rate; + unsigned int nr; + unsigned int nf; + unsigned int no; + unsigned int bwadj; +}; + +/** + * struct rockchip_pll_clock: information about pll clock + * @id: platform specific id of the clock. + * @name: name of this pll clock. + * @parent_name: name of the parent clock. + * @flags: optional flags for basic clock. + * @con_offset: offset of the register for configuring the PLL. + * @mode_offset: offset of the register for configuring the PLL-mode. + * @mode_shift: offset inside the mode-register for the mode of this pll. + * @lock_shift: offset inside the lock register for the lock status. + * @type: Type of PLL to be registered. + * @pll_flags: hardware-specific flags + * @rate_table: Table of usable pll rates + * + * Flags: + * ROCKCHIP_PLL_SYNC_RATE - check rate parameters to match against the + * rate_table parameters and ajust them if necessary. + */ +struct rockchip_pll_clock { + unsigned int id; + const char *name; + const char **parent_names; + u8 num_parents; + unsigned long flags; + int con_offset; + int mode_offset; + int mode_shift; + int lock_shift; + enum rockchip_pll_type type; + u8 pll_flags; + struct rockchip_pll_rate_table *rate_table; +}; + +#define ROCKCHIP_PLL_SYNC_RATE BIT(0) + +#define PLL(_type, _id, _name, _pnames, _flags, _con, _mode, _mshift, \ + _lshift, _pflags, _rtable) \ + { \ + .id = _id, \ + .type = _type, \ + .name = _name, \ + .parent_names = _pnames, \ + .num_parents = ARRAY_SIZE(_pnames), \ + .flags = CLK_GET_RATE_NOCACHE | _flags, \ + .con_offset = _con, \ + .mode_offset = _mode, \ + .mode_shift = _mshift, \ + .lock_shift = _lshift, \ + .pll_flags = _pflags, \ + .rate_table = _rtable, \ + } + +struct clk *rockchip_clk_register_pll(enum rockchip_pll_type pll_type, + const char *name, const char **parent_names, u8 num_parents, + void __iomem *base, int con_offset, int grf_lock_offset, + int lock_shift, int reg_mode, int mode_shift, + struct rockchip_pll_rate_table *rate_table, + u8 clk_pll_flags, spinlock_t *lock); + +struct rockchip_cpuclk_clksel { + int reg; + u32 val; +}; + +#define ROCKCHIP_CPUCLK_NUM_DIVIDERS 2 +struct rockchip_cpuclk_rate_table { + unsigned long prate; + struct rockchip_cpuclk_clksel divs[ROCKCHIP_CPUCLK_NUM_DIVIDERS]; +}; + +/** + * struct rockchip_cpuclk_reg_data: describes register offsets and masks of the cpuclock + * @core_reg: register offset of the core settings register + * @div_core_shift: core divider offset used to divide the pll value + * @div_core_mask: core divider mask + * @mux_core_shift: offset of the core multiplexer + */ +struct rockchip_cpuclk_reg_data { + int core_reg; + u8 div_core_shift; + u32 div_core_mask; + int mux_core_reg; + u8 mux_core_shift; +}; + +struct clk *rockchip_clk_register_cpuclk(const char *name, + const char **parent_names, u8 num_parents, + const struct rockchip_cpuclk_reg_data *reg_data, + const struct rockchip_cpuclk_rate_table *rates, + int nrates, void __iomem *reg_base, spinlock_t *lock); + +struct clk *rockchip_clk_register_mmc(const char *name, + const char **parent_names, u8 num_parents, + void __iomem *reg, int shift); + +#define PNAME(x) static const char *x[] __initdata + +enum rockchip_clk_branch_type { + branch_composite, + branch_mux, + branch_divider, + branch_fraction_divider, + branch_gate, + branch_mmc, +}; + +struct rockchip_clk_branch { + unsigned int id; + enum rockchip_clk_branch_type branch_type; + const char *name; + const char **parent_names; + u8 num_parents; + unsigned long flags; + int muxdiv_offset; + u8 mux_shift; + u8 mux_width; + u8 mux_flags; + u8 div_shift; + u8 div_width; + u8 div_flags; + struct clk_div_table *div_table; + int gate_offset; + u8 gate_shift; + u8 gate_flags; +}; + +#define COMPOSITE(_id, cname, pnames, f, mo, ms, mw, mf, ds, dw,\ + df, go, gs, gf) \ + { \ + .id = _id, \ + .branch_type = branch_composite, \ + .name = cname, \ + .parent_names = pnames, \ + .num_parents = ARRAY_SIZE(pnames), \ + .flags = f, \ + .muxdiv_offset = mo, \ + .mux_shift = ms, \ + .mux_width = mw, \ + .mux_flags = mf, \ + .div_shift = ds, \ + .div_width = dw, \ + .div_flags = df, \ + .gate_offset = go, \ + .gate_shift = gs, \ + .gate_flags = gf, \ + } + +#define COMPOSITE_NOMUX(_id, cname, pname, f, mo, ds, dw, df, \ + go, gs, gf) \ + { \ + .id = _id, \ + .branch_type = branch_composite, \ + .name = cname, \ + .parent_names = (const char *[]){ pname }, \ + .num_parents = 1, \ + .flags = f, \ + .muxdiv_offset = mo, \ + .div_shift = ds, \ + .div_width = dw, \ + .div_flags = df, \ + .gate_offset = go, \ + .gate_shift = gs, \ + .gate_flags = gf, \ + } + +#define COMPOSITE_NOMUX_DIVTBL(_id, cname, pname, f, mo, ds, dw,\ + df, dt, go, gs, gf) \ + { \ + .id = _id, \ + .branch_type = branch_composite, \ + .name = cname, \ + .parent_names = (const char *[]){ pname }, \ + .num_parents = 1, \ + .flags = f, \ + .muxdiv_offset = mo, \ + .div_shift = ds, \ + .div_width = dw, \ + .div_flags = df, \ + .div_table = dt, \ + .gate_offset = go, \ + .gate_shift = gs, \ + .gate_flags = gf, \ + } + +#define COMPOSITE_NODIV(_id, cname, pnames, f, mo, ms, mw, mf, \ + go, gs, gf) \ + { \ + .id = _id, \ + .branch_type = branch_composite, \ + .name = cname, \ + .parent_names = pnames, \ + .num_parents = ARRAY_SIZE(pnames), \ + .flags = f, \ + .muxdiv_offset = mo, \ + .mux_shift = ms, \ + .mux_width = mw, \ + .mux_flags = mf, \ + .gate_offset = go, \ + .gate_shift = gs, \ + .gate_flags = gf, \ + } + +#define COMPOSITE_NOGATE(_id, cname, pnames, f, mo, ms, mw, mf, \ + ds, dw, df) \ + { \ + .id = _id, \ + .branch_type = branch_composite, \ + .name = cname, \ + .parent_names = pnames, \ + .num_parents = ARRAY_SIZE(pnames), \ + .flags = f, \ + .muxdiv_offset = mo, \ + .mux_shift = ms, \ + .mux_width = mw, \ + .mux_flags = mf, \ + .div_shift = ds, \ + .div_width = dw, \ + .div_flags = df, \ + .gate_offset = -1, \ + } + +#define COMPOSITE_FRAC(_id, cname, pname, f, mo, df, go, gs, gf)\ + { \ + .id = _id, \ + .branch_type = branch_fraction_divider, \ + .name = cname, \ + .parent_names = (const char *[]){ pname }, \ + .num_parents = 1, \ + .flags = f, \ + .muxdiv_offset = mo, \ + .div_shift = 16, \ + .div_width = 16, \ + .div_flags = df, \ + .gate_offset = go, \ + .gate_shift = gs, \ + .gate_flags = gf, \ + } + +#define MUX(_id, cname, pnames, f, o, s, w, mf) \ + { \ + .id = _id, \ + .branch_type = branch_mux, \ + .name = cname, \ + .parent_names = pnames, \ + .num_parents = ARRAY_SIZE(pnames), \ + .flags = f, \ + .muxdiv_offset = o, \ + .mux_shift = s, \ + .mux_width = w, \ + .mux_flags = mf, \ + .gate_offset = -1, \ + } + +#define DIV(_id, cname, pname, f, o, s, w, df) \ + { \ + .id = _id, \ + .branch_type = branch_divider, \ + .name = cname, \ + .parent_names = (const char *[]){ pname }, \ + .num_parents = 1, \ + .flags = f, \ + .muxdiv_offset = o, \ + .div_shift = s, \ + .div_width = w, \ + .div_flags = df, \ + .gate_offset = -1, \ + } + +#define DIVTBL(_id, cname, pname, f, o, s, w, df, dt) \ + { \ + .id = _id, \ + .branch_type = branch_divider, \ + .name = cname, \ + .parent_names = (const char *[]){ pname }, \ + .num_parents = 1, \ + .flags = f, \ + .muxdiv_offset = o, \ + .div_shift = s, \ + .div_width = w, \ + .div_flags = df, \ + .div_table = dt, \ + } + +#define GATE(_id, cname, pname, f, o, b, gf) \ + { \ + .id = _id, \ + .branch_type = branch_gate, \ + .name = cname, \ + .parent_names = (const char *[]){ pname }, \ + .num_parents = 1, \ + .flags = f, \ + .gate_offset = o, \ + .gate_shift = b, \ + .gate_flags = gf, \ + } + +#define MMC(_id, cname, pname, offset, shift) \ + { \ + .id = _id, \ + .branch_type = branch_mmc, \ + .name = cname, \ + .parent_names = (const char *[]){ pname }, \ + .num_parents = 1, \ + .muxdiv_offset = offset, \ + .div_shift = shift, \ + } + +void rockchip_clk_init(struct device_node *np, void __iomem *base, + unsigned long nr_clks); +struct regmap *rockchip_clk_get_grf(void); +void rockchip_clk_add_lookup(struct clk *clk, unsigned int id); +void rockchip_clk_register_branches(struct rockchip_clk_branch *clk_list, + unsigned int nr_clk); +void rockchip_clk_register_plls(struct rockchip_pll_clock *pll_list, + unsigned int nr_pll, int grf_lock_offset); +void rockchip_clk_register_armclk(unsigned int lookup_id, const char *name, + const char **parent_names, u8 num_parents, + const struct rockchip_cpuclk_reg_data *reg_data, + const struct rockchip_cpuclk_rate_table *rates, + int nrates); +void rockchip_clk_protect_critical(const char *const clocks[], int nclocks); +void rockchip_register_restart_notifier(unsigned int reg); + +#define ROCKCHIP_SOFTRST_HIWORD_MASK BIT(0) + +#ifdef CONFIG_RESET_CONTROLLER +void rockchip_register_softrst(struct device_node *np, + unsigned int num_regs, + void __iomem *base, u8 flags); +#else +static inline void rockchip_register_softrst(struct device_node *np, + unsigned int num_regs, + void __iomem *base, u8 flags) +{ +} +#endif + +#endif |