1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2013, 2018, The Linux Foundation. All rights reserved. */ 3 4 #ifndef __QCOM_CLK_RCG_H__ 5 #define __QCOM_CLK_RCG_H__ 6 7 #include <linux/clk-provider.h> 8 #include "clk-regmap.h" 9 10 #define F(f, s, h, m, n) { (f), (s), (2 * (h) - 1), (m), (n) } 11 12 struct freq_tbl { 13 unsigned long freq; 14 u8 src; 15 u8 pre_div; 16 u16 m; 17 u16 n; 18 }; 19 20 /** 21 * struct mn - M/N:D counter 22 * @mnctr_en_bit: bit to enable mn counter 23 * @mnctr_reset_bit: bit to assert mn counter reset 24 * @mnctr_mode_shift: lowest bit of mn counter mode field 25 * @n_val_shift: lowest bit of n value field 26 * @m_val_shift: lowest bit of m value field 27 * @width: number of bits in m/n/d values 28 * @reset_in_cc: true if the mnctr_reset_bit is in the CC register 29 */ 30 struct mn { 31 u8 mnctr_en_bit; 32 u8 mnctr_reset_bit; 33 u8 mnctr_mode_shift; 34 #define MNCTR_MODE_DUAL 0x2 35 #define MNCTR_MODE_MASK 0x3 36 u8 n_val_shift; 37 u8 m_val_shift; 38 u8 width; 39 bool reset_in_cc; 40 }; 41 42 /** 43 * struct pre_div - pre-divider 44 * @pre_div_shift: lowest bit of pre divider field 45 * @pre_div_width: number of bits in predivider 46 */ 47 struct pre_div { 48 u8 pre_div_shift; 49 u8 pre_div_width; 50 }; 51 52 /** 53 * struct src_sel - source selector 54 * @src_sel_shift: lowest bit of source selection field 55 * @parent_map: map from software's parent index to hardware's src_sel field 56 */ 57 struct src_sel { 58 u8 src_sel_shift; 59 #define SRC_SEL_MASK 0x7 60 const struct parent_map *parent_map; 61 }; 62 63 /** 64 * struct clk_rcg - root clock generator 65 * 66 * @ns_reg: NS register 67 * @md_reg: MD register 68 * @mn: mn counter 69 * @p: pre divider 70 * @s: source selector 71 * @freq_tbl: frequency table 72 * @clkr: regmap clock handle 73 * @lock: register lock 74 */ 75 struct clk_rcg { 76 u32 ns_reg; 77 u32 md_reg; 78 79 struct mn mn; 80 struct pre_div p; 81 struct src_sel s; 82 83 const struct freq_tbl *freq_tbl; 84 85 struct clk_regmap clkr; 86 }; 87 88 extern const struct clk_ops clk_rcg_ops; 89 extern const struct clk_ops clk_rcg_bypass_ops; 90 extern const struct clk_ops clk_rcg_bypass2_ops; 91 extern const struct clk_ops clk_rcg_pixel_ops; 92 extern const struct clk_ops clk_rcg_esc_ops; 93 extern const struct clk_ops clk_rcg_lcc_ops; 94 95 #define to_clk_rcg(_hw) container_of(to_clk_regmap(_hw), struct clk_rcg, clkr) 96 97 /** 98 * struct clk_dyn_rcg - root clock generator with glitch free mux 99 * 100 * @mux_sel_bit: bit to switch glitch free mux 101 * @ns_reg: NS0 and NS1 register 102 * @md_reg: MD0 and MD1 register 103 * @bank_reg: register to XOR @mux_sel_bit into to switch glitch free mux 104 * @mn: mn counter (banked) 105 * @s: source selector (banked) 106 * @freq_tbl: frequency table 107 * @clkr: regmap clock handle 108 * @lock: register lock 109 */ 110 struct clk_dyn_rcg { 111 u32 ns_reg[2]; 112 u32 md_reg[2]; 113 u32 bank_reg; 114 115 u8 mux_sel_bit; 116 117 struct mn mn[2]; 118 struct pre_div p[2]; 119 struct src_sel s[2]; 120 121 const struct freq_tbl *freq_tbl; 122 123 struct clk_regmap clkr; 124 }; 125 126 extern const struct clk_ops clk_dyn_rcg_ops; 127 128 #define to_clk_dyn_rcg(_hw) \ 129 container_of(to_clk_regmap(_hw), struct clk_dyn_rcg, clkr) 130 131 /** 132 * struct clk_rcg2 - root clock generator 133 * 134 * @cmd_rcgr: corresponds to *_CMD_RCGR 135 * @mnd_width: number of bits in m/n/d values 136 * @hid_width: number of bits in half integer divider 137 * @safe_src_index: safe src index value 138 * @parent_map: map from software's parent index to hardware's src_sel field 139 * @freq_tbl: frequency table 140 * @clkr: regmap clock handle 141 * @cfg_off: defines the cfg register offset from the CMD_RCGR + CFG_REG 142 */ 143 struct clk_rcg2 { 144 u32 cmd_rcgr; 145 u8 mnd_width; 146 u8 hid_width; 147 u8 safe_src_index; 148 const struct parent_map *parent_map; 149 const struct freq_tbl *freq_tbl; 150 struct clk_regmap clkr; 151 u8 cfg_off; 152 }; 153 154 #define to_clk_rcg2(_hw) container_of(to_clk_regmap(_hw), struct clk_rcg2, clkr) 155 156 extern const struct clk_ops clk_rcg2_ops; 157 extern const struct clk_ops clk_rcg2_floor_ops; 158 extern const struct clk_ops clk_edp_pixel_ops; 159 extern const struct clk_ops clk_byte_ops; 160 extern const struct clk_ops clk_byte2_ops; 161 extern const struct clk_ops clk_pixel_ops; 162 extern const struct clk_ops clk_gfx3d_ops; 163 extern const struct clk_ops clk_rcg2_shared_ops; 164 165 struct clk_rcg_dfs_data { 166 struct clk_rcg2 *rcg; 167 struct clk_init_data *init; 168 }; 169 170 #define DEFINE_RCG_DFS(r) \ 171 { .rcg = &r##_src, .init = &r##_init } 172 173 extern int qcom_cc_register_rcg_dfs(struct regmap *regmap, 174 const struct clk_rcg_dfs_data *rcgs, 175 size_t len); 176 #endif 177