1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2016 Icenowy Zheng <icenowy@aosc.xyz> 4 */ 5 6 #include <linux/clk-provider.h> 7 #include <linux/module.h> 8 #include <linux/of.h> 9 #include <linux/platform_device.h> 10 11 #include "ccu_common.h" 12 #include "ccu_reset.h" 13 14 #include "ccu_div.h" 15 #include "ccu_gate.h" 16 #include "ccu_mp.h" 17 #include "ccu_nm.h" 18 19 #include "ccu-sun8i-r.h" 20 21 static const struct clk_parent_data ar100_parents[] = { 22 { .fw_name = "losc" }, 23 { .fw_name = "hosc" }, 24 { .fw_name = "pll-periph" }, 25 { .fw_name = "iosc" }, 26 }; 27 28 static const struct ccu_mux_var_prediv ar100_predivs[] = { 29 { .index = 2, .shift = 8, .width = 5 }, 30 }; 31 32 static struct ccu_div ar100_clk = { 33 .div = _SUNXI_CCU_DIV_FLAGS(4, 2, CLK_DIVIDER_POWER_OF_TWO), 34 35 .mux = { 36 .shift = 16, 37 .width = 2, 38 39 .var_predivs = ar100_predivs, 40 .n_var_predivs = ARRAY_SIZE(ar100_predivs), 41 }, 42 43 .common = { 44 .reg = 0x00, 45 .features = CCU_FEATURE_VARIABLE_PREDIV, 46 .hw.init = CLK_HW_INIT_PARENTS_DATA("ar100", 47 ar100_parents, 48 &ccu_div_ops, 49 0), 50 }, 51 }; 52 53 static CLK_FIXED_FACTOR_HW(ahb0_clk, "ahb0", &ar100_clk.common.hw, 1, 1, 0); 54 55 static SUNXI_CCU_M(apb0_clk, "apb0", "ahb0", 0x0c, 0, 2, 0); 56 57 /* 58 * Define the parent as an array that can be reused to save space 59 * instead of having compound literals for each gate. Also have it 60 * non-const so we can change it on the A83T. 61 */ 62 static const struct clk_hw *apb0_gate_parent[] = { &apb0_clk.common.hw }; 63 static SUNXI_CCU_GATE_HWS(apb0_pio_clk, "apb0-pio", 64 apb0_gate_parent, 0x28, BIT(0), 0); 65 static SUNXI_CCU_GATE_HWS(apb0_ir_clk, "apb0-ir", 66 apb0_gate_parent, 0x28, BIT(1), 0); 67 static SUNXI_CCU_GATE_HWS(apb0_timer_clk, "apb0-timer", 68 apb0_gate_parent, 0x28, BIT(2), 0); 69 static SUNXI_CCU_GATE_HWS(apb0_rsb_clk, "apb0-rsb", 70 apb0_gate_parent, 0x28, BIT(3), 0); 71 static SUNXI_CCU_GATE_HWS(apb0_uart_clk, "apb0-uart", 72 apb0_gate_parent, 0x28, BIT(4), 0); 73 static SUNXI_CCU_GATE_HWS(apb0_i2c_clk, "apb0-i2c", 74 apb0_gate_parent, 0x28, BIT(6), 0); 75 static SUNXI_CCU_GATE_HWS(apb0_twd_clk, "apb0-twd", 76 apb0_gate_parent, 0x28, BIT(7), 0); 77 78 static const char * const r_mod0_default_parents[] = { "osc32k", "osc24M" }; 79 static SUNXI_CCU_MP_WITH_MUX_GATE(ir_clk, "ir", 80 r_mod0_default_parents, 0x54, 81 0, 4, /* M */ 82 16, 2, /* P */ 83 24, 2, /* mux */ 84 BIT(31), /* gate */ 85 0); 86 87 static const struct clk_parent_data a83t_r_mod0_parents[] = { 88 { .fw_name = "iosc" }, 89 { .fw_name = "hosc" }, 90 }; 91 static const struct ccu_mux_fixed_prediv a83t_ir_predivs[] = { 92 { .index = 0, .div = 16 }, 93 }; 94 static struct ccu_mp a83t_ir_clk = { 95 .enable = BIT(31), 96 97 .m = _SUNXI_CCU_DIV(0, 4), 98 .p = _SUNXI_CCU_DIV(16, 2), 99 100 .mux = { 101 .shift = 24, 102 .width = 2, 103 .fixed_predivs = a83t_ir_predivs, 104 .n_predivs = ARRAY_SIZE(a83t_ir_predivs), 105 }, 106 107 .common = { 108 .reg = 0x54, 109 .features = CCU_FEATURE_VARIABLE_PREDIV, 110 .hw.init = CLK_HW_INIT_PARENTS_DATA("ir", 111 a83t_r_mod0_parents, 112 &ccu_mp_ops, 113 0), 114 }, 115 }; 116 117 static struct ccu_common *sun8i_r_ccu_clks[] = { 118 &ar100_clk.common, 119 &apb0_clk.common, 120 &apb0_pio_clk.common, 121 &apb0_ir_clk.common, 122 &apb0_timer_clk.common, 123 &apb0_rsb_clk.common, 124 &apb0_uart_clk.common, 125 &apb0_i2c_clk.common, 126 &apb0_twd_clk.common, 127 &ir_clk.common, 128 &a83t_ir_clk.common, 129 }; 130 131 static struct clk_hw_onecell_data sun8i_a83t_r_hw_clks = { 132 .hws = { 133 [CLK_AR100] = &ar100_clk.common.hw, 134 [CLK_AHB0] = &ahb0_clk.hw, 135 [CLK_APB0] = &apb0_clk.common.hw, 136 [CLK_APB0_PIO] = &apb0_pio_clk.common.hw, 137 [CLK_APB0_IR] = &apb0_ir_clk.common.hw, 138 [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw, 139 [CLK_APB0_RSB] = &apb0_rsb_clk.common.hw, 140 [CLK_APB0_UART] = &apb0_uart_clk.common.hw, 141 [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw, 142 [CLK_APB0_TWD] = &apb0_twd_clk.common.hw, 143 [CLK_IR] = &a83t_ir_clk.common.hw, 144 }, 145 .num = CLK_NUMBER, 146 }; 147 148 static struct clk_hw_onecell_data sun8i_h3_r_hw_clks = { 149 .hws = { 150 [CLK_AR100] = &ar100_clk.common.hw, 151 [CLK_AHB0] = &ahb0_clk.hw, 152 [CLK_APB0] = &apb0_clk.common.hw, 153 [CLK_APB0_PIO] = &apb0_pio_clk.common.hw, 154 [CLK_APB0_IR] = &apb0_ir_clk.common.hw, 155 [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw, 156 [CLK_APB0_UART] = &apb0_uart_clk.common.hw, 157 [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw, 158 [CLK_APB0_TWD] = &apb0_twd_clk.common.hw, 159 [CLK_IR] = &ir_clk.common.hw, 160 }, 161 .num = CLK_NUMBER, 162 }; 163 164 static struct clk_hw_onecell_data sun50i_a64_r_hw_clks = { 165 .hws = { 166 [CLK_AR100] = &ar100_clk.common.hw, 167 [CLK_AHB0] = &ahb0_clk.hw, 168 [CLK_APB0] = &apb0_clk.common.hw, 169 [CLK_APB0_PIO] = &apb0_pio_clk.common.hw, 170 [CLK_APB0_IR] = &apb0_ir_clk.common.hw, 171 [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw, 172 [CLK_APB0_RSB] = &apb0_rsb_clk.common.hw, 173 [CLK_APB0_UART] = &apb0_uart_clk.common.hw, 174 [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw, 175 [CLK_APB0_TWD] = &apb0_twd_clk.common.hw, 176 [CLK_IR] = &ir_clk.common.hw, 177 }, 178 .num = CLK_NUMBER, 179 }; 180 181 static struct ccu_reset_map sun8i_a83t_r_ccu_resets[] = { 182 [RST_APB0_IR] = { 0xb0, BIT(1) }, 183 [RST_APB0_TIMER] = { 0xb0, BIT(2) }, 184 [RST_APB0_RSB] = { 0xb0, BIT(3) }, 185 [RST_APB0_UART] = { 0xb0, BIT(4) }, 186 [RST_APB0_I2C] = { 0xb0, BIT(6) }, 187 }; 188 189 static struct ccu_reset_map sun8i_h3_r_ccu_resets[] = { 190 [RST_APB0_IR] = { 0xb0, BIT(1) }, 191 [RST_APB0_TIMER] = { 0xb0, BIT(2) }, 192 [RST_APB0_UART] = { 0xb0, BIT(4) }, 193 [RST_APB0_I2C] = { 0xb0, BIT(6) }, 194 }; 195 196 static struct ccu_reset_map sun50i_a64_r_ccu_resets[] = { 197 [RST_APB0_IR] = { 0xb0, BIT(1) }, 198 [RST_APB0_TIMER] = { 0xb0, BIT(2) }, 199 [RST_APB0_RSB] = { 0xb0, BIT(3) }, 200 [RST_APB0_UART] = { 0xb0, BIT(4) }, 201 [RST_APB0_I2C] = { 0xb0, BIT(6) }, 202 }; 203 204 static const struct sunxi_ccu_desc sun8i_a83t_r_ccu_desc = { 205 .ccu_clks = sun8i_r_ccu_clks, 206 .num_ccu_clks = ARRAY_SIZE(sun8i_r_ccu_clks), 207 208 .hw_clks = &sun8i_a83t_r_hw_clks, 209 210 .resets = sun8i_a83t_r_ccu_resets, 211 .num_resets = ARRAY_SIZE(sun8i_a83t_r_ccu_resets), 212 }; 213 214 static const struct sunxi_ccu_desc sun8i_h3_r_ccu_desc = { 215 .ccu_clks = sun8i_r_ccu_clks, 216 .num_ccu_clks = ARRAY_SIZE(sun8i_r_ccu_clks), 217 218 .hw_clks = &sun8i_h3_r_hw_clks, 219 220 .resets = sun8i_h3_r_ccu_resets, 221 .num_resets = ARRAY_SIZE(sun8i_h3_r_ccu_resets), 222 }; 223 224 static const struct sunxi_ccu_desc sun50i_a64_r_ccu_desc = { 225 .ccu_clks = sun8i_r_ccu_clks, 226 .num_ccu_clks = ARRAY_SIZE(sun8i_r_ccu_clks), 227 228 .hw_clks = &sun50i_a64_r_hw_clks, 229 230 .resets = sun50i_a64_r_ccu_resets, 231 .num_resets = ARRAY_SIZE(sun50i_a64_r_ccu_resets), 232 }; 233 234 static int sun8i_r_ccu_probe(struct platform_device *pdev) 235 { 236 const struct sunxi_ccu_desc *desc; 237 void __iomem *reg; 238 239 desc = of_device_get_match_data(&pdev->dev); 240 if (!desc) 241 return -EINVAL; 242 243 reg = devm_platform_ioremap_resource(pdev, 0); 244 if (IS_ERR(reg)) 245 return PTR_ERR(reg); 246 247 return devm_sunxi_ccu_probe(&pdev->dev, reg, desc); 248 } 249 250 static const struct of_device_id sun8i_r_ccu_ids[] = { 251 { 252 .compatible = "allwinner,sun8i-a83t-r-ccu", 253 .data = &sun8i_a83t_r_ccu_desc, 254 }, 255 { 256 .compatible = "allwinner,sun8i-h3-r-ccu", 257 .data = &sun8i_h3_r_ccu_desc, 258 }, 259 { 260 .compatible = "allwinner,sun50i-a64-r-ccu", 261 .data = &sun50i_a64_r_ccu_desc, 262 }, 263 { } 264 }; 265 266 static struct platform_driver sun8i_r_ccu_driver = { 267 .probe = sun8i_r_ccu_probe, 268 .driver = { 269 .name = "sun8i-r-ccu", 270 .suppress_bind_attrs = true, 271 .of_match_table = sun8i_r_ccu_ids, 272 }, 273 }; 274 module_platform_driver(sun8i_r_ccu_driver); 275 276 MODULE_IMPORT_NS(SUNXI_CCU); 277 MODULE_LICENSE("GPL"); 278