1 /* 2 * s2mps11.c 3 * 4 * Copyright (c) 2012 Samsung Electronics Co., Ltd 5 * http://www.samsung.com 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 * 12 */ 13 14 #include <linux/bug.h> 15 #include <linux/err.h> 16 #include <linux/gpio.h> 17 #include <linux/slab.h> 18 #include <linux/module.h> 19 #include <linux/platform_device.h> 20 #include <linux/regulator/driver.h> 21 #include <linux/regulator/machine.h> 22 #include <linux/mfd/samsung/core.h> 23 #include <linux/mfd/samsung/s2mps11.h> 24 25 struct s2mps11_info { 26 struct regulator_dev *rdev[S2MPS11_REGULATOR_MAX]; 27 28 int ramp_delay2; 29 int ramp_delay34; 30 int ramp_delay5; 31 int ramp_delay16; 32 int ramp_delay7810; 33 int ramp_delay9; 34 35 bool buck6_ramp; 36 bool buck2_ramp; 37 bool buck3_ramp; 38 bool buck4_ramp; 39 }; 40 41 static int get_ramp_delay(int ramp_delay) 42 { 43 unsigned char cnt = 0; 44 45 ramp_delay /= 6250; 46 47 while (true) { 48 ramp_delay = ramp_delay >> 1; 49 if (ramp_delay == 0) 50 break; 51 cnt++; 52 } 53 return cnt; 54 } 55 56 static struct regulator_ops s2mps11_ldo_ops = { 57 .list_voltage = regulator_list_voltage_linear, 58 .map_voltage = regulator_map_voltage_linear, 59 .is_enabled = regulator_is_enabled_regmap, 60 .enable = regulator_enable_regmap, 61 .disable = regulator_disable_regmap, 62 .get_voltage_sel = regulator_get_voltage_sel_regmap, 63 .set_voltage_sel = regulator_set_voltage_sel_regmap, 64 .set_voltage_time_sel = regulator_set_voltage_time_sel, 65 }; 66 67 static struct regulator_ops s2mps11_buck_ops = { 68 .list_voltage = regulator_list_voltage_linear, 69 .map_voltage = regulator_map_voltage_linear, 70 .is_enabled = regulator_is_enabled_regmap, 71 .enable = regulator_enable_regmap, 72 .disable = regulator_disable_regmap, 73 .get_voltage_sel = regulator_get_voltage_sel_regmap, 74 .set_voltage_sel = regulator_set_voltage_sel_regmap, 75 .set_voltage_time_sel = regulator_set_voltage_time_sel, 76 }; 77 78 #define regulator_desc_ldo1(num) { \ 79 .name = "LDO"#num, \ 80 .id = S2MPS11_LDO##num, \ 81 .ops = &s2mps11_ldo_ops, \ 82 .type = REGULATOR_VOLTAGE, \ 83 .owner = THIS_MODULE, \ 84 .min_uV = S2MPS11_LDO_MIN, \ 85 .uV_step = S2MPS11_LDO_STEP1, \ 86 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \ 87 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \ 88 .vsel_mask = S2MPS11_LDO_VSEL_MASK, \ 89 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \ 90 .enable_mask = S2MPS11_ENABLE_MASK \ 91 } 92 #define regulator_desc_ldo2(num) { \ 93 .name = "LDO"#num, \ 94 .id = S2MPS11_LDO##num, \ 95 .ops = &s2mps11_ldo_ops, \ 96 .type = REGULATOR_VOLTAGE, \ 97 .owner = THIS_MODULE, \ 98 .min_uV = S2MPS11_LDO_MIN, \ 99 .uV_step = S2MPS11_LDO_STEP2, \ 100 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \ 101 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \ 102 .vsel_mask = S2MPS11_LDO_VSEL_MASK, \ 103 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \ 104 .enable_mask = S2MPS11_ENABLE_MASK \ 105 } 106 107 #define regulator_desc_buck1_4(num) { \ 108 .name = "BUCK"#num, \ 109 .id = S2MPS11_BUCK##num, \ 110 .ops = &s2mps11_buck_ops, \ 111 .type = REGULATOR_VOLTAGE, \ 112 .owner = THIS_MODULE, \ 113 .min_uV = S2MPS11_BUCK_MIN1, \ 114 .uV_step = S2MPS11_BUCK_STEP1, \ 115 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ 116 .ramp_delay = S2MPS11_RAMP_DELAY, \ 117 .vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \ 118 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ 119 .enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \ 120 .enable_mask = S2MPS11_ENABLE_MASK \ 121 } 122 123 #define regulator_desc_buck5 { \ 124 .name = "BUCK5", \ 125 .id = S2MPS11_BUCK5, \ 126 .ops = &s2mps11_buck_ops, \ 127 .type = REGULATOR_VOLTAGE, \ 128 .owner = THIS_MODULE, \ 129 .min_uV = S2MPS11_BUCK_MIN1, \ 130 .uV_step = S2MPS11_BUCK_STEP1, \ 131 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ 132 .ramp_delay = S2MPS11_RAMP_DELAY, \ 133 .vsel_reg = S2MPS11_REG_B5CTRL2, \ 134 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ 135 .enable_reg = S2MPS11_REG_B5CTRL1, \ 136 .enable_mask = S2MPS11_ENABLE_MASK \ 137 } 138 139 #define regulator_desc_buck6_8(num) { \ 140 .name = "BUCK"#num, \ 141 .id = S2MPS11_BUCK##num, \ 142 .ops = &s2mps11_buck_ops, \ 143 .type = REGULATOR_VOLTAGE, \ 144 .owner = THIS_MODULE, \ 145 .min_uV = S2MPS11_BUCK_MIN1, \ 146 .uV_step = S2MPS11_BUCK_STEP1, \ 147 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ 148 .ramp_delay = S2MPS11_RAMP_DELAY, \ 149 .vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \ 150 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ 151 .enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \ 152 .enable_mask = S2MPS11_ENABLE_MASK \ 153 } 154 155 #define regulator_desc_buck9 { \ 156 .name = "BUCK9", \ 157 .id = S2MPS11_BUCK9, \ 158 .ops = &s2mps11_buck_ops, \ 159 .type = REGULATOR_VOLTAGE, \ 160 .owner = THIS_MODULE, \ 161 .min_uV = S2MPS11_BUCK_MIN3, \ 162 .uV_step = S2MPS11_BUCK_STEP3, \ 163 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ 164 .ramp_delay = S2MPS11_RAMP_DELAY, \ 165 .vsel_reg = S2MPS11_REG_B9CTRL2, \ 166 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ 167 .enable_reg = S2MPS11_REG_B9CTRL1, \ 168 .enable_mask = S2MPS11_ENABLE_MASK \ 169 } 170 171 #define regulator_desc_buck10 { \ 172 .name = "BUCK10", \ 173 .id = S2MPS11_BUCK10, \ 174 .ops = &s2mps11_buck_ops, \ 175 .type = REGULATOR_VOLTAGE, \ 176 .owner = THIS_MODULE, \ 177 .min_uV = S2MPS11_BUCK_MIN2, \ 178 .uV_step = S2MPS11_BUCK_STEP2, \ 179 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ 180 .ramp_delay = S2MPS11_RAMP_DELAY, \ 181 .vsel_reg = S2MPS11_REG_B10CTRL2, \ 182 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ 183 .enable_reg = S2MPS11_REG_B10CTRL1, \ 184 .enable_mask = S2MPS11_ENABLE_MASK \ 185 } 186 187 static struct regulator_desc regulators[] = { 188 regulator_desc_ldo2(1), 189 regulator_desc_ldo1(2), 190 regulator_desc_ldo1(3), 191 regulator_desc_ldo1(4), 192 regulator_desc_ldo1(5), 193 regulator_desc_ldo2(6), 194 regulator_desc_ldo1(7), 195 regulator_desc_ldo1(8), 196 regulator_desc_ldo1(9), 197 regulator_desc_ldo1(10), 198 regulator_desc_ldo2(11), 199 regulator_desc_ldo1(12), 200 regulator_desc_ldo1(13), 201 regulator_desc_ldo1(14), 202 regulator_desc_ldo1(15), 203 regulator_desc_ldo1(16), 204 regulator_desc_ldo1(17), 205 regulator_desc_ldo1(18), 206 regulator_desc_ldo1(19), 207 regulator_desc_ldo1(20), 208 regulator_desc_ldo1(21), 209 regulator_desc_ldo2(22), 210 regulator_desc_ldo2(23), 211 regulator_desc_ldo1(24), 212 regulator_desc_ldo1(25), 213 regulator_desc_ldo1(26), 214 regulator_desc_ldo2(27), 215 regulator_desc_ldo1(28), 216 regulator_desc_ldo1(29), 217 regulator_desc_ldo1(30), 218 regulator_desc_ldo1(31), 219 regulator_desc_ldo1(32), 220 regulator_desc_ldo1(33), 221 regulator_desc_ldo1(34), 222 regulator_desc_ldo1(35), 223 regulator_desc_ldo1(36), 224 regulator_desc_ldo1(37), 225 regulator_desc_ldo1(38), 226 regulator_desc_buck1_4(1), 227 regulator_desc_buck1_4(2), 228 regulator_desc_buck1_4(3), 229 regulator_desc_buck1_4(4), 230 regulator_desc_buck5, 231 regulator_desc_buck6_8(6), 232 regulator_desc_buck6_8(7), 233 regulator_desc_buck6_8(8), 234 regulator_desc_buck9, 235 regulator_desc_buck10, 236 }; 237 238 static int s2mps11_pmic_probe(struct platform_device *pdev) 239 { 240 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); 241 struct sec_platform_data *pdata = dev_get_platdata(iodev->dev); 242 struct regulator_config config = { }; 243 struct s2mps11_info *s2mps11; 244 int i, ret; 245 unsigned char ramp_enable, ramp_reg = 0; 246 247 if (!pdata) { 248 dev_err(pdev->dev.parent, "Platform data not supplied\n"); 249 return -ENODEV; 250 } 251 252 s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info), 253 GFP_KERNEL); 254 if (!s2mps11) 255 return -ENOMEM; 256 257 platform_set_drvdata(pdev, s2mps11); 258 259 s2mps11->ramp_delay2 = pdata->buck2_ramp_delay; 260 s2mps11->ramp_delay34 = pdata->buck34_ramp_delay; 261 s2mps11->ramp_delay5 = pdata->buck5_ramp_delay; 262 s2mps11->ramp_delay16 = pdata->buck16_ramp_delay; 263 s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay; 264 s2mps11->ramp_delay9 = pdata->buck9_ramp_delay; 265 266 s2mps11->buck6_ramp = pdata->buck6_ramp_enable; 267 s2mps11->buck2_ramp = pdata->buck2_ramp_enable; 268 s2mps11->buck3_ramp = pdata->buck3_ramp_enable; 269 s2mps11->buck4_ramp = pdata->buck4_ramp_enable; 270 271 ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) | 272 (s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ; 273 274 if (ramp_enable) { 275 if (s2mps11->buck2_ramp) 276 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) << 6; 277 if (s2mps11->buck3_ramp || s2mps11->buck4_ramp) 278 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) << 4; 279 sec_reg_write(iodev, S2MPS11_REG_RAMP, ramp_reg | ramp_enable); 280 } 281 282 ramp_reg &= 0x00; 283 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) << 6; 284 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) << 4; 285 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) << 2; 286 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9); 287 sec_reg_write(iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg); 288 289 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) { 290 291 config.dev = &pdev->dev; 292 config.regmap = iodev->regmap; 293 config.init_data = pdata->regulators[i].initdata; 294 config.driver_data = s2mps11; 295 296 s2mps11->rdev[i] = regulator_register(®ulators[i], &config); 297 if (IS_ERR(s2mps11->rdev[i])) { 298 ret = PTR_ERR(s2mps11->rdev[i]); 299 dev_err(&pdev->dev, "regulator init failed for %d\n", 300 i); 301 s2mps11->rdev[i] = NULL; 302 goto err; 303 } 304 } 305 306 return 0; 307 err: 308 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) 309 regulator_unregister(s2mps11->rdev[i]); 310 311 return ret; 312 } 313 314 static int s2mps11_pmic_remove(struct platform_device *pdev) 315 { 316 struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev); 317 int i; 318 319 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) 320 regulator_unregister(s2mps11->rdev[i]); 321 322 return 0; 323 } 324 325 static const struct platform_device_id s2mps11_pmic_id[] = { 326 { "s2mps11-pmic", 0}, 327 { }, 328 }; 329 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id); 330 331 static struct platform_driver s2mps11_pmic_driver = { 332 .driver = { 333 .name = "s2mps11-pmic", 334 .owner = THIS_MODULE, 335 }, 336 .probe = s2mps11_pmic_probe, 337 .remove = s2mps11_pmic_remove, 338 .id_table = s2mps11_pmic_id, 339 }; 340 341 static int __init s2mps11_pmic_init(void) 342 { 343 return platform_driver_register(&s2mps11_pmic_driver); 344 } 345 subsys_initcall(s2mps11_pmic_init); 346 347 static void __exit s2mps11_pmic_exit(void) 348 { 349 platform_driver_unregister(&s2mps11_pmic_driver); 350 } 351 module_exit(s2mps11_pmic_exit); 352 353 /* Module information */ 354 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); 355 MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver"); 356 MODULE_LICENSE("GPL"); 357