1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Hi3516CV300 Clock and Reset Generator Driver 4 * 5 * Copyright (c) 2016 HiSilicon Technologies Co., Ltd. 6 */ 7 8 #include <dt-bindings/clock/hi3516cv300-clock.h> 9 #include <linux/clk-provider.h> 10 #include <linux/module.h> 11 #include <linux/of_device.h> 12 #include <linux/platform_device.h> 13 #include "clk.h" 14 #include "crg.h" 15 #include "reset.h" 16 17 /* hi3516CV300 core CRG */ 18 #define HI3516CV300_INNER_CLK_OFFSET 64 19 #define HI3516CV300_FIXED_3M 65 20 #define HI3516CV300_FIXED_6M 66 21 #define HI3516CV300_FIXED_24M 67 22 #define HI3516CV300_FIXED_49P5 68 23 #define HI3516CV300_FIXED_50M 69 24 #define HI3516CV300_FIXED_83P3M 70 25 #define HI3516CV300_FIXED_99M 71 26 #define HI3516CV300_FIXED_100M 72 27 #define HI3516CV300_FIXED_148P5M 73 28 #define HI3516CV300_FIXED_198M 74 29 #define HI3516CV300_FIXED_297M 75 30 #define HI3516CV300_UART_MUX 76 31 #define HI3516CV300_FMC_MUX 77 32 #define HI3516CV300_MMC0_MUX 78 33 #define HI3516CV300_MMC1_MUX 79 34 #define HI3516CV300_MMC2_MUX 80 35 #define HI3516CV300_MMC3_MUX 81 36 #define HI3516CV300_PWM_MUX 82 37 #define HI3516CV300_CRG_NR_CLKS 128 38 39 static const struct hisi_fixed_rate_clock hi3516cv300_fixed_rate_clks[] = { 40 { HI3516CV300_FIXED_3M, "3m", NULL, 0, 3000000, }, 41 { HI3516CV300_FIXED_6M, "6m", NULL, 0, 6000000, }, 42 { HI3516CV300_FIXED_24M, "24m", NULL, 0, 24000000, }, 43 { HI3516CV300_FIXED_49P5, "49.5m", NULL, 0, 49500000, }, 44 { HI3516CV300_FIXED_50M, "50m", NULL, 0, 50000000, }, 45 { HI3516CV300_FIXED_83P3M, "83.3m", NULL, 0, 83300000, }, 46 { HI3516CV300_FIXED_99M, "99m", NULL, 0, 99000000, }, 47 { HI3516CV300_FIXED_100M, "100m", NULL, 0, 100000000, }, 48 { HI3516CV300_FIXED_148P5M, "148.5m", NULL, 0, 148500000, }, 49 { HI3516CV300_FIXED_198M, "198m", NULL, 0, 198000000, }, 50 { HI3516CV300_FIXED_297M, "297m", NULL, 0, 297000000, }, 51 { HI3516CV300_APB_CLK, "apb", NULL, 0, 50000000, }, 52 }; 53 54 static const char *const uart_mux_p[] = {"24m", "6m"}; 55 static const char *const fmc_mux_p[] = { 56 "24m", "83.3m", "148.5m", "198m", "297m" 57 }; 58 static const char *const mmc_mux_p[] = {"49.5m"}; 59 static const char *const mmc2_mux_p[] = {"99m", "49.5m"}; 60 static const char *const pwm_mux_p[] = {"3m", "50m", "24m", "24m"}; 61 62 static u32 uart_mux_table[] = {0, 1}; 63 static u32 fmc_mux_table[] = {0, 1, 2, 3, 4}; 64 static u32 mmc_mux_table[] = {0}; 65 static u32 mmc2_mux_table[] = {0, 2}; 66 static u32 pwm_mux_table[] = {0, 1, 2, 3}; 67 68 static const struct hisi_mux_clock hi3516cv300_mux_clks[] = { 69 { HI3516CV300_UART_MUX, "uart_mux", uart_mux_p, ARRAY_SIZE(uart_mux_p), 70 CLK_SET_RATE_PARENT, 0xe4, 19, 1, 0, uart_mux_table, }, 71 { HI3516CV300_FMC_MUX, "fmc_mux", fmc_mux_p, ARRAY_SIZE(fmc_mux_p), 72 CLK_SET_RATE_PARENT, 0xc0, 2, 3, 0, fmc_mux_table, }, 73 { HI3516CV300_MMC0_MUX, "mmc0_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p), 74 CLK_SET_RATE_PARENT, 0xc4, 4, 2, 0, mmc_mux_table, }, 75 { HI3516CV300_MMC1_MUX, "mmc1_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p), 76 CLK_SET_RATE_PARENT, 0xc4, 12, 2, 0, mmc_mux_table, }, 77 { HI3516CV300_MMC2_MUX, "mmc2_mux", mmc2_mux_p, ARRAY_SIZE(mmc2_mux_p), 78 CLK_SET_RATE_PARENT, 0xc4, 20, 2, 0, mmc2_mux_table, }, 79 { HI3516CV300_MMC3_MUX, "mmc3_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p), 80 CLK_SET_RATE_PARENT, 0xc8, 4, 2, 0, mmc_mux_table, }, 81 { HI3516CV300_PWM_MUX, "pwm_mux", pwm_mux_p, ARRAY_SIZE(pwm_mux_p), 82 CLK_SET_RATE_PARENT, 0x38, 2, 2, 0, pwm_mux_table, }, 83 }; 84 85 static const struct hisi_gate_clock hi3516cv300_gate_clks[] = { 86 87 { HI3516CV300_UART0_CLK, "clk_uart0", "uart_mux", CLK_SET_RATE_PARENT, 88 0xe4, 15, 0, }, 89 { HI3516CV300_UART1_CLK, "clk_uart1", "uart_mux", CLK_SET_RATE_PARENT, 90 0xe4, 16, 0, }, 91 { HI3516CV300_UART2_CLK, "clk_uart2", "uart_mux", CLK_SET_RATE_PARENT, 92 0xe4, 17, 0, }, 93 94 { HI3516CV300_SPI0_CLK, "clk_spi0", "100m", CLK_SET_RATE_PARENT, 95 0xe4, 13, 0, }, 96 { HI3516CV300_SPI1_CLK, "clk_spi1", "100m", CLK_SET_RATE_PARENT, 97 0xe4, 14, 0, }, 98 99 { HI3516CV300_FMC_CLK, "clk_fmc", "fmc_mux", CLK_SET_RATE_PARENT, 100 0xc0, 1, 0, }, 101 { HI3516CV300_MMC0_CLK, "clk_mmc0", "mmc0_mux", CLK_SET_RATE_PARENT, 102 0xc4, 1, 0, }, 103 { HI3516CV300_MMC1_CLK, "clk_mmc1", "mmc1_mux", CLK_SET_RATE_PARENT, 104 0xc4, 9, 0, }, 105 { HI3516CV300_MMC2_CLK, "clk_mmc2", "mmc2_mux", CLK_SET_RATE_PARENT, 106 0xc4, 17, 0, }, 107 { HI3516CV300_MMC3_CLK, "clk_mmc3", "mmc3_mux", CLK_SET_RATE_PARENT, 108 0xc8, 1, 0, }, 109 110 { HI3516CV300_ETH_CLK, "clk_eth", NULL, 0, 0xec, 1, 0, }, 111 112 { HI3516CV300_DMAC_CLK, "clk_dmac", NULL, 0, 0xd8, 5, 0, }, 113 { HI3516CV300_PWM_CLK, "clk_pwm", "pwm_mux", CLK_SET_RATE_PARENT, 114 0x38, 1, 0, }, 115 116 { HI3516CV300_USB2_BUS_CLK, "clk_usb2_bus", NULL, 0, 0xb8, 0, 0, }, 117 { HI3516CV300_USB2_OHCI48M_CLK, "clk_usb2_ohci48m", NULL, 0, 118 0xb8, 1, 0, }, 119 { HI3516CV300_USB2_OHCI12M_CLK, "clk_usb2_ohci12m", NULL, 0, 120 0xb8, 2, 0, }, 121 { HI3516CV300_USB2_OTG_UTMI_CLK, "clk_usb2_otg_utmi", NULL, 0, 122 0xb8, 3, 0, }, 123 { HI3516CV300_USB2_HST_PHY_CLK, "clk_usb2_hst_phy", NULL, 0, 124 0xb8, 4, 0, }, 125 { HI3516CV300_USB2_UTMI0_CLK, "clk_usb2_utmi0", NULL, 0, 0xb8, 5, 0, }, 126 { HI3516CV300_USB2_PHY_CLK, "clk_usb2_phy", NULL, 0, 0xb8, 7, 0, }, 127 }; 128 129 static struct hisi_clock_data *hi3516cv300_clk_register( 130 struct platform_device *pdev) 131 { 132 struct hisi_clock_data *clk_data; 133 int ret; 134 135 clk_data = hisi_clk_alloc(pdev, HI3516CV300_CRG_NR_CLKS); 136 if (!clk_data) 137 return ERR_PTR(-ENOMEM); 138 139 ret = hisi_clk_register_fixed_rate(hi3516cv300_fixed_rate_clks, 140 ARRAY_SIZE(hi3516cv300_fixed_rate_clks), clk_data); 141 if (ret) 142 return ERR_PTR(ret); 143 144 ret = hisi_clk_register_mux(hi3516cv300_mux_clks, 145 ARRAY_SIZE(hi3516cv300_mux_clks), clk_data); 146 if (ret) 147 goto unregister_fixed_rate; 148 149 ret = hisi_clk_register_gate(hi3516cv300_gate_clks, 150 ARRAY_SIZE(hi3516cv300_gate_clks), clk_data); 151 if (ret) 152 goto unregister_mux; 153 154 ret = of_clk_add_provider(pdev->dev.of_node, 155 of_clk_src_onecell_get, &clk_data->clk_data); 156 if (ret) 157 goto unregister_gate; 158 159 return clk_data; 160 161 unregister_gate: 162 hisi_clk_unregister_gate(hi3516cv300_gate_clks, 163 ARRAY_SIZE(hi3516cv300_gate_clks), clk_data); 164 unregister_mux: 165 hisi_clk_unregister_mux(hi3516cv300_mux_clks, 166 ARRAY_SIZE(hi3516cv300_mux_clks), clk_data); 167 unregister_fixed_rate: 168 hisi_clk_unregister_fixed_rate(hi3516cv300_fixed_rate_clks, 169 ARRAY_SIZE(hi3516cv300_fixed_rate_clks), clk_data); 170 return ERR_PTR(ret); 171 } 172 173 static void hi3516cv300_clk_unregister(struct platform_device *pdev) 174 { 175 struct hisi_crg_dev *crg = platform_get_drvdata(pdev); 176 177 of_clk_del_provider(pdev->dev.of_node); 178 179 hisi_clk_unregister_gate(hi3516cv300_gate_clks, 180 ARRAY_SIZE(hi3516cv300_gate_clks), crg->clk_data); 181 hisi_clk_unregister_mux(hi3516cv300_mux_clks, 182 ARRAY_SIZE(hi3516cv300_mux_clks), crg->clk_data); 183 hisi_clk_unregister_fixed_rate(hi3516cv300_fixed_rate_clks, 184 ARRAY_SIZE(hi3516cv300_fixed_rate_clks), crg->clk_data); 185 } 186 187 static const struct hisi_crg_funcs hi3516cv300_crg_funcs = { 188 .register_clks = hi3516cv300_clk_register, 189 .unregister_clks = hi3516cv300_clk_unregister, 190 }; 191 192 /* hi3516CV300 sysctrl CRG */ 193 #define HI3516CV300_SYSCTRL_NR_CLKS 16 194 195 static const char *const wdt_mux_p[] __initconst = { "3m", "apb" }; 196 static u32 wdt_mux_table[] = {0, 1}; 197 198 static const struct hisi_mux_clock hi3516cv300_sysctrl_mux_clks[] = { 199 { HI3516CV300_WDT_CLK, "wdt", wdt_mux_p, ARRAY_SIZE(wdt_mux_p), 200 CLK_SET_RATE_PARENT, 0x0, 23, 1, 0, wdt_mux_table, }, 201 }; 202 203 static struct hisi_clock_data *hi3516cv300_sysctrl_clk_register( 204 struct platform_device *pdev) 205 { 206 struct hisi_clock_data *clk_data; 207 int ret; 208 209 clk_data = hisi_clk_alloc(pdev, HI3516CV300_SYSCTRL_NR_CLKS); 210 if (!clk_data) 211 return ERR_PTR(-ENOMEM); 212 213 ret = hisi_clk_register_mux(hi3516cv300_sysctrl_mux_clks, 214 ARRAY_SIZE(hi3516cv300_sysctrl_mux_clks), clk_data); 215 if (ret) 216 return ERR_PTR(ret); 217 218 219 ret = of_clk_add_provider(pdev->dev.of_node, 220 of_clk_src_onecell_get, &clk_data->clk_data); 221 if (ret) 222 goto unregister_mux; 223 224 return clk_data; 225 226 unregister_mux: 227 hisi_clk_unregister_mux(hi3516cv300_sysctrl_mux_clks, 228 ARRAY_SIZE(hi3516cv300_sysctrl_mux_clks), clk_data); 229 return ERR_PTR(ret); 230 } 231 232 static void hi3516cv300_sysctrl_clk_unregister(struct platform_device *pdev) 233 { 234 struct hisi_crg_dev *crg = platform_get_drvdata(pdev); 235 236 of_clk_del_provider(pdev->dev.of_node); 237 238 hisi_clk_unregister_mux(hi3516cv300_sysctrl_mux_clks, 239 ARRAY_SIZE(hi3516cv300_sysctrl_mux_clks), 240 crg->clk_data); 241 } 242 243 static const struct hisi_crg_funcs hi3516cv300_sysctrl_funcs = { 244 .register_clks = hi3516cv300_sysctrl_clk_register, 245 .unregister_clks = hi3516cv300_sysctrl_clk_unregister, 246 }; 247 248 static const struct of_device_id hi3516cv300_crg_match_table[] = { 249 { 250 .compatible = "hisilicon,hi3516cv300-crg", 251 .data = &hi3516cv300_crg_funcs 252 }, 253 { 254 .compatible = "hisilicon,hi3516cv300-sysctrl", 255 .data = &hi3516cv300_sysctrl_funcs 256 }, 257 { } 258 }; 259 MODULE_DEVICE_TABLE(of, hi3516cv300_crg_match_table); 260 261 static int hi3516cv300_crg_probe(struct platform_device *pdev) 262 { 263 struct hisi_crg_dev *crg; 264 265 crg = devm_kmalloc(&pdev->dev, sizeof(*crg), GFP_KERNEL); 266 if (!crg) 267 return -ENOMEM; 268 269 crg->funcs = of_device_get_match_data(&pdev->dev); 270 if (!crg->funcs) 271 return -ENOENT; 272 273 crg->rstc = hisi_reset_init(pdev); 274 if (!crg->rstc) 275 return -ENOMEM; 276 277 crg->clk_data = crg->funcs->register_clks(pdev); 278 if (IS_ERR(crg->clk_data)) { 279 hisi_reset_exit(crg->rstc); 280 return PTR_ERR(crg->clk_data); 281 } 282 283 platform_set_drvdata(pdev, crg); 284 return 0; 285 } 286 287 static int hi3516cv300_crg_remove(struct platform_device *pdev) 288 { 289 struct hisi_crg_dev *crg = platform_get_drvdata(pdev); 290 291 hisi_reset_exit(crg->rstc); 292 crg->funcs->unregister_clks(pdev); 293 return 0; 294 } 295 296 static struct platform_driver hi3516cv300_crg_driver = { 297 .probe = hi3516cv300_crg_probe, 298 .remove = hi3516cv300_crg_remove, 299 .driver = { 300 .name = "hi3516cv300-crg", 301 .of_match_table = hi3516cv300_crg_match_table, 302 }, 303 }; 304 305 static int __init hi3516cv300_crg_init(void) 306 { 307 return platform_driver_register(&hi3516cv300_crg_driver); 308 } 309 core_initcall(hi3516cv300_crg_init); 310 311 static void __exit hi3516cv300_crg_exit(void) 312 { 313 platform_driver_unregister(&hi3516cv300_crg_driver); 314 } 315 module_exit(hi3516cv300_crg_exit); 316 317 MODULE_LICENSE("GPL v2"); 318 MODULE_DESCRIPTION("HiSilicon Hi3516CV300 CRG Driver"); 319