1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2016 Socionext Inc. 4 * Author: Masahiro Yamada <yamada.masahiro (at) socionext.com> 5 */ 6 7 #ifndef __CLK_UNIPHIER_H__ 8 #define __CLK_UNIPHIER_H__ 9 10 #include <linux/kernel.h> 11 #include <linux/types.h> 12 13 #define UNIPHIER_CLK_MUX_MAX_PARENTS 8 14 15 #define UNIPHIER_CLK_TYPE_END 0 16 #define UNIPHIER_CLK_TYPE_FIXED_RATE 2 17 #define UNIPHIER_CLK_TYPE_GATE 3 18 #define UNIPHIER_CLK_TYPE_MUX 4 19 20 #define UNIPHIER_CLK_ID_INVALID (U8_MAX) 21 22 struct uniphier_clk_fixed_rate_data { 23 unsigned long fixed_rate; 24 }; 25 26 struct uniphier_clk_gate_data { 27 u8 parent_id; 28 u16 reg; 29 u8 bit; 30 }; 31 32 struct uniphier_clk_mux_data { 33 u8 parent_ids[UNIPHIER_CLK_MUX_MAX_PARENTS]; 34 u8 num_parents; 35 u16 reg; 36 u32 masks[UNIPHIER_CLK_MUX_MAX_PARENTS]; 37 u32 vals[UNIPHIER_CLK_MUX_MAX_PARENTS]; 38 }; 39 40 struct uniphier_clk_data { 41 u8 type; 42 u8 id; 43 union { 44 struct uniphier_clk_fixed_rate_data rate; 45 struct uniphier_clk_gate_data gate; 46 struct uniphier_clk_mux_data mux; 47 } data; 48 }; 49 50 #define UNIPHIER_CLK_RATE(_id, _rate) \ 51 { \ 52 .type = UNIPHIER_CLK_TYPE_FIXED_RATE, \ 53 .id = (_id), \ 54 .data.rate = { \ 55 .fixed_rate = (_rate), \ 56 }, \ 57 } 58 59 #define UNIPHIER_CLK_GATE(_id, _parent, _reg, _bit) \ 60 { \ 61 .type = UNIPHIER_CLK_TYPE_GATE, \ 62 .id = (_id), \ 63 .data.gate = { \ 64 .parent_id = (_parent), \ 65 .reg = (_reg), \ 66 .bit = (_bit), \ 67 }, \ 68 } 69 70 #define UNIPHIER_CLK_GATE_SIMPLE(_id, _reg, _bit) \ 71 UNIPHIER_CLK_GATE(_id, UNIPHIER_CLK_ID_INVALID, _reg, _bit) 72 73 extern const struct uniphier_clk_data uniphier_pxs2_sys_clk_data[]; 74 extern const struct uniphier_clk_data uniphier_ld20_sys_clk_data[]; 75 extern const struct uniphier_clk_data uniphier_pxs3_sys_clk_data[]; 76 extern const struct uniphier_clk_data uniphier_mio_clk_data[]; 77 78 #endif /* __CLK_UNIPHIER_H__ */ 79
