Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Regulator Driver for Freescale MC13783 PMIC |
| 3 | * |
| 4 | * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 5 | * Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com> |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 12 | #include <linux/mfd/mc13783.h> |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 13 | #include <linux/regulator/machine.h> |
| 14 | #include <linux/regulator/driver.h> |
| 15 | #include <linux/platform_device.h> |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 16 | #include <linux/kernel.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 17 | #include <linux/slab.h> |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 18 | #include <linux/init.h> |
| 19 | #include <linux/err.h> |
| 20 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 21 | #define MC13783_REG_SWITCHERS5 29 |
| 22 | #define MC13783_REG_SWITCHERS5_SW3EN (1 << 20) |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 23 | #define MC13783_REG_SWITCHERS5_SW3VSEL 18 |
| 24 | #define MC13783_REG_SWITCHERS5_SW3VSEL_M (3 << 18) |
| 25 | |
| 26 | #define MC13783_REG_REGULATORSETTING0 30 |
| 27 | #define MC13783_REG_REGULATORSETTING0_VIOLOVSEL 2 |
| 28 | #define MC13783_REG_REGULATORSETTING0_VDIGVSEL 4 |
| 29 | #define MC13783_REG_REGULATORSETTING0_VGENVSEL 6 |
| 30 | #define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL 9 |
| 31 | #define MC13783_REG_REGULATORSETTING0_VRFREFVSEL 11 |
| 32 | #define MC13783_REG_REGULATORSETTING0_VRFCPVSEL 13 |
| 33 | #define MC13783_REG_REGULATORSETTING0_VSIMVSEL 14 |
| 34 | #define MC13783_REG_REGULATORSETTING0_VESIMVSEL 15 |
| 35 | #define MC13783_REG_REGULATORSETTING0_VCAMVSEL 16 |
| 36 | |
| 37 | #define MC13783_REG_REGULATORSETTING0_VIOLOVSEL_M (3 << 2) |
| 38 | #define MC13783_REG_REGULATORSETTING0_VDIGVSEL_M (3 << 4) |
| 39 | #define MC13783_REG_REGULATORSETTING0_VGENVSEL_M (7 << 6) |
| 40 | #define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL_M (3 << 9) |
| 41 | #define MC13783_REG_REGULATORSETTING0_VRFREFVSEL_M (3 << 11) |
| 42 | #define MC13783_REG_REGULATORSETTING0_VRFCPVSEL_M (1 << 13) |
| 43 | #define MC13783_REG_REGULATORSETTING0_VSIMVSEL_M (1 << 14) |
| 44 | #define MC13783_REG_REGULATORSETTING0_VESIMVSEL_M (1 << 15) |
| 45 | #define MC13783_REG_REGULATORSETTING0_VCAMVSEL_M (7 << 16) |
| 46 | |
| 47 | #define MC13783_REG_REGULATORSETTING1 31 |
| 48 | #define MC13783_REG_REGULATORSETTING1_VVIBVSEL 0 |
| 49 | #define MC13783_REG_REGULATORSETTING1_VRF1VSEL 2 |
| 50 | #define MC13783_REG_REGULATORSETTING1_VRF2VSEL 4 |
| 51 | #define MC13783_REG_REGULATORSETTING1_VMMC1VSEL 6 |
| 52 | #define MC13783_REG_REGULATORSETTING1_VMMC2VSEL 9 |
| 53 | |
| 54 | #define MC13783_REG_REGULATORSETTING1_VVIBVSEL_M (3 << 0) |
| 55 | #define MC13783_REG_REGULATORSETTING1_VRF1VSEL_M (3 << 2) |
| 56 | #define MC13783_REG_REGULATORSETTING1_VRF2VSEL_M (3 << 4) |
| 57 | #define MC13783_REG_REGULATORSETTING1_VMMC1VSEL_M (7 << 6) |
| 58 | #define MC13783_REG_REGULATORSETTING1_VMMC2VSEL_M (7 << 9) |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 59 | |
| 60 | #define MC13783_REG_REGULATORMODE0 32 |
| 61 | #define MC13783_REG_REGULATORMODE0_VAUDIOEN (1 << 0) |
| 62 | #define MC13783_REG_REGULATORMODE0_VIOHIEN (1 << 3) |
| 63 | #define MC13783_REG_REGULATORMODE0_VIOLOEN (1 << 6) |
| 64 | #define MC13783_REG_REGULATORMODE0_VDIGEN (1 << 9) |
| 65 | #define MC13783_REG_REGULATORMODE0_VGENEN (1 << 12) |
| 66 | #define MC13783_REG_REGULATORMODE0_VRFDIGEN (1 << 15) |
| 67 | #define MC13783_REG_REGULATORMODE0_VRFREFEN (1 << 18) |
| 68 | #define MC13783_REG_REGULATORMODE0_VRFCPEN (1 << 21) |
| 69 | |
| 70 | #define MC13783_REG_REGULATORMODE1 33 |
| 71 | #define MC13783_REG_REGULATORMODE1_VSIMEN (1 << 0) |
| 72 | #define MC13783_REG_REGULATORMODE1_VESIMEN (1 << 3) |
| 73 | #define MC13783_REG_REGULATORMODE1_VCAMEN (1 << 6) |
| 74 | #define MC13783_REG_REGULATORMODE1_VRFBGEN (1 << 9) |
| 75 | #define MC13783_REG_REGULATORMODE1_VVIBEN (1 << 11) |
| 76 | #define MC13783_REG_REGULATORMODE1_VRF1EN (1 << 12) |
| 77 | #define MC13783_REG_REGULATORMODE1_VRF2EN (1 << 15) |
| 78 | #define MC13783_REG_REGULATORMODE1_VMMC1EN (1 << 18) |
| 79 | #define MC13783_REG_REGULATORMODE1_VMMC2EN (1 << 21) |
| 80 | |
| 81 | #define MC13783_REG_POWERMISC 34 |
| 82 | #define MC13783_REG_POWERMISC_GPO1EN (1 << 6) |
| 83 | #define MC13783_REG_POWERMISC_GPO2EN (1 << 8) |
| 84 | #define MC13783_REG_POWERMISC_GPO3EN (1 << 10) |
| 85 | #define MC13783_REG_POWERMISC_GPO4EN (1 << 12) |
Alberto Panizzo | f4b97b3 | 2010-01-19 12:48:54 +0100 | [diff] [blame] | 86 | #define MC13783_REG_POWERMISC_PWGT1SPIEN (1 << 15) |
| 87 | #define MC13783_REG_POWERMISC_PWGT2SPIEN (1 << 16) |
| 88 | |
| 89 | #define MC13783_REG_POWERMISC_PWGTSPI_M (3 << 15) |
| 90 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 91 | |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 92 | struct mc13783_regulator { |
| 93 | struct regulator_desc desc; |
| 94 | int reg; |
| 95 | int enable_bit; |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 96 | int vsel_reg; |
| 97 | int vsel_shift; |
| 98 | int vsel_mask; |
| 99 | int const *voltages; |
| 100 | }; |
| 101 | |
| 102 | /* Voltage Values */ |
| 103 | static const int const mc13783_sw3_val[] = { |
| 104 | 5000000, 5000000, 5000000, 5500000, |
| 105 | }; |
| 106 | |
| 107 | static const int const mc13783_vaudio_val[] = { |
| 108 | 2775000, |
| 109 | }; |
| 110 | |
| 111 | static const int const mc13783_viohi_val[] = { |
| 112 | 2775000, |
| 113 | }; |
| 114 | |
| 115 | static const int const mc13783_violo_val[] = { |
| 116 | 1200000, 1300000, 1500000, 1800000, |
| 117 | }; |
| 118 | |
| 119 | static const int const mc13783_vdig_val[] = { |
| 120 | 1200000, 1300000, 1500000, 1800000, |
| 121 | }; |
| 122 | |
| 123 | static const int const mc13783_vgen_val[] = { |
| 124 | 1200000, 1300000, 1500000, 1800000, |
| 125 | 1100000, 2000000, 2775000, 2400000, |
| 126 | }; |
| 127 | |
| 128 | static const int const mc13783_vrfdig_val[] = { |
| 129 | 1200000, 1500000, 1800000, 1875000, |
| 130 | }; |
| 131 | |
| 132 | static const int const mc13783_vrfref_val[] = { |
| 133 | 2475000, 2600000, 2700000, 2775000, |
| 134 | }; |
| 135 | |
| 136 | static const int const mc13783_vrfcp_val[] = { |
| 137 | 2700000, 2775000, |
| 138 | }; |
| 139 | |
| 140 | static const int const mc13783_vsim_val[] = { |
| 141 | 1800000, 2900000, 3000000, |
| 142 | }; |
| 143 | |
| 144 | static const int const mc13783_vesim_val[] = { |
| 145 | 1800000, 2900000, |
| 146 | }; |
| 147 | |
| 148 | static const int const mc13783_vcam_val[] = { |
| 149 | 1500000, 1800000, 2500000, 2550000, |
| 150 | 2600000, 2750000, 2800000, 3000000, |
| 151 | }; |
| 152 | |
| 153 | static const int const mc13783_vrfbg_val[] = { |
| 154 | 1250000, |
| 155 | }; |
| 156 | |
| 157 | static const int const mc13783_vvib_val[] = { |
| 158 | 1300000, 1800000, 2000000, 3000000, |
| 159 | }; |
| 160 | |
| 161 | static const int const mc13783_vmmc_val[] = { |
| 162 | 1600000, 1800000, 2000000, 2600000, |
| 163 | 2700000, 2800000, 2900000, 3000000, |
| 164 | }; |
| 165 | |
| 166 | static const int const mc13783_vrf_val[] = { |
| 167 | 1500000, 1875000, 2700000, 2775000, |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 168 | }; |
| 169 | |
Alberto Panizzo | f4b97b3 | 2010-01-19 12:48:54 +0100 | [diff] [blame] | 170 | static const int const mc13783_gpo_val[] = { |
| 171 | 3100000, |
| 172 | }; |
| 173 | |
| 174 | static const int const mc13783_pwgtdrv_val[] = { |
| 175 | 5500000, |
| 176 | }; |
| 177 | |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 178 | static struct regulator_ops mc13783_regulator_ops; |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 179 | static struct regulator_ops mc13783_fixed_regulator_ops; |
Alberto Panizzo | f4b97b3 | 2010-01-19 12:48:54 +0100 | [diff] [blame] | 180 | static struct regulator_ops mc13783_gpo_regulator_ops; |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 181 | |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 182 | #define MC13783_DEFINE(prefix, _name, _reg, _vsel_reg, _voltages) \ |
| 183 | [MC13783_ ## prefix ## _ ## _name] = { \ |
| 184 | .desc = { \ |
| 185 | .name = #prefix "_" #_name, \ |
| 186 | .n_voltages = ARRAY_SIZE(_voltages), \ |
| 187 | .ops = &mc13783_regulator_ops, \ |
| 188 | .type = REGULATOR_VOLTAGE, \ |
| 189 | .id = MC13783_ ## prefix ## _ ## _name, \ |
| 190 | .owner = THIS_MODULE, \ |
| 191 | }, \ |
| 192 | .reg = MC13783_REG_ ## _reg, \ |
| 193 | .enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \ |
| 194 | .vsel_reg = MC13783_REG_ ## _vsel_reg, \ |
| 195 | .vsel_shift = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL,\ |
| 196 | .vsel_mask = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL_M,\ |
| 197 | .voltages = _voltages, \ |
| 198 | } |
| 199 | |
| 200 | #define MC13783_FIXED_DEFINE(prefix, _name, _reg, _voltages) \ |
| 201 | [MC13783_ ## prefix ## _ ## _name] = { \ |
| 202 | .desc = { \ |
| 203 | .name = #prefix "_" #_name, \ |
| 204 | .n_voltages = ARRAY_SIZE(_voltages), \ |
| 205 | .ops = &mc13783_fixed_regulator_ops, \ |
| 206 | .type = REGULATOR_VOLTAGE, \ |
| 207 | .id = MC13783_ ## prefix ## _ ## _name, \ |
| 208 | .owner = THIS_MODULE, \ |
| 209 | }, \ |
| 210 | .reg = MC13783_REG_ ## _reg, \ |
| 211 | .enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \ |
| 212 | .voltages = _voltages, \ |
| 213 | } |
| 214 | |
Alberto Panizzo | f4b97b3 | 2010-01-19 12:48:54 +0100 | [diff] [blame] | 215 | #define MC13783_GPO_DEFINE(prefix, _name, _reg, _voltages) \ |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 216 | [MC13783_ ## prefix ## _ ## _name] = { \ |
| 217 | .desc = { \ |
| 218 | .name = #prefix "_" #_name, \ |
Alberto Panizzo | f4b97b3 | 2010-01-19 12:48:54 +0100 | [diff] [blame] | 219 | .n_voltages = ARRAY_SIZE(_voltages), \ |
| 220 | .ops = &mc13783_gpo_regulator_ops, \ |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 221 | .type = REGULATOR_VOLTAGE, \ |
| 222 | .id = MC13783_ ## prefix ## _ ## _name, \ |
| 223 | .owner = THIS_MODULE, \ |
| 224 | }, \ |
| 225 | .reg = MC13783_REG_ ## _reg, \ |
| 226 | .enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \ |
Alberto Panizzo | f4b97b3 | 2010-01-19 12:48:54 +0100 | [diff] [blame] | 227 | .voltages = _voltages, \ |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 228 | } |
| 229 | |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 230 | #define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages) \ |
| 231 | MC13783_DEFINE(SW, _name, _reg, _vsel_reg, _voltages) |
| 232 | #define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages) \ |
| 233 | MC13783_DEFINE(REGU, _name, _reg, _vsel_reg, _voltages) |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 234 | |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 235 | static struct mc13783_regulator mc13783_regulators[] = { |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 236 | MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val), |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 237 | |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 238 | MC13783_FIXED_DEFINE(REGU, VAUDIO, REGULATORMODE0, mc13783_vaudio_val), |
| 239 | MC13783_FIXED_DEFINE(REGU, VIOHI, REGULATORMODE0, mc13783_viohi_val), |
| 240 | MC13783_DEFINE_REGU(VIOLO, REGULATORMODE0, REGULATORSETTING0, \ |
| 241 | mc13783_violo_val), |
| 242 | MC13783_DEFINE_REGU(VDIG, REGULATORMODE0, REGULATORSETTING0, \ |
| 243 | mc13783_vdig_val), |
| 244 | MC13783_DEFINE_REGU(VGEN, REGULATORMODE0, REGULATORSETTING0, \ |
| 245 | mc13783_vgen_val), |
| 246 | MC13783_DEFINE_REGU(VRFDIG, REGULATORMODE0, REGULATORSETTING0, \ |
| 247 | mc13783_vrfdig_val), |
| 248 | MC13783_DEFINE_REGU(VRFREF, REGULATORMODE0, REGULATORSETTING0, \ |
| 249 | mc13783_vrfref_val), |
| 250 | MC13783_DEFINE_REGU(VRFCP, REGULATORMODE0, REGULATORSETTING0, \ |
| 251 | mc13783_vrfcp_val), |
| 252 | MC13783_DEFINE_REGU(VSIM, REGULATORMODE1, REGULATORSETTING0, \ |
| 253 | mc13783_vsim_val), |
| 254 | MC13783_DEFINE_REGU(VESIM, REGULATORMODE1, REGULATORSETTING0, \ |
| 255 | mc13783_vesim_val), |
| 256 | MC13783_DEFINE_REGU(VCAM, REGULATORMODE1, REGULATORSETTING0, \ |
| 257 | mc13783_vcam_val), |
| 258 | MC13783_FIXED_DEFINE(REGU, VRFBG, REGULATORMODE1, mc13783_vrfbg_val), |
| 259 | MC13783_DEFINE_REGU(VVIB, REGULATORMODE1, REGULATORSETTING1, \ |
| 260 | mc13783_vvib_val), |
| 261 | MC13783_DEFINE_REGU(VRF1, REGULATORMODE1, REGULATORSETTING1, \ |
| 262 | mc13783_vrf_val), |
| 263 | MC13783_DEFINE_REGU(VRF2, REGULATORMODE1, REGULATORSETTING1, \ |
| 264 | mc13783_vrf_val), |
| 265 | MC13783_DEFINE_REGU(VMMC1, REGULATORMODE1, REGULATORSETTING1, \ |
| 266 | mc13783_vmmc_val), |
| 267 | MC13783_DEFINE_REGU(VMMC2, REGULATORMODE1, REGULATORSETTING1, \ |
| 268 | mc13783_vmmc_val), |
Alberto Panizzo | f4b97b3 | 2010-01-19 12:48:54 +0100 | [diff] [blame] | 269 | MC13783_GPO_DEFINE(REGU, GPO1, POWERMISC, mc13783_gpo_val), |
| 270 | MC13783_GPO_DEFINE(REGU, GPO2, POWERMISC, mc13783_gpo_val), |
| 271 | MC13783_GPO_DEFINE(REGU, GPO3, POWERMISC, mc13783_gpo_val), |
| 272 | MC13783_GPO_DEFINE(REGU, GPO4, POWERMISC, mc13783_gpo_val), |
| 273 | MC13783_GPO_DEFINE(REGU, PWGT1SPI, POWERMISC, mc13783_pwgtdrv_val), |
| 274 | MC13783_GPO_DEFINE(REGU, PWGT2SPI, POWERMISC, mc13783_pwgtdrv_val), |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 275 | }; |
| 276 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 277 | struct mc13783_regulator_priv { |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 278 | struct mc13783 *mc13783; |
Alberto Panizzo | f4b97b3 | 2010-01-19 12:48:54 +0100 | [diff] [blame] | 279 | u32 powermisc_pwgt_state; |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 280 | struct regulator_dev *regulators[]; |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 281 | }; |
| 282 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 283 | static int mc13783_regulator_enable(struct regulator_dev *rdev) |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 284 | { |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 285 | struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev); |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 286 | int id = rdev_get_id(rdev); |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 287 | int ret; |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 288 | |
| 289 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); |
| 290 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 291 | mc13783_lock(priv->mc13783); |
| 292 | ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg, |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 293 | mc13783_regulators[id].enable_bit, |
| 294 | mc13783_regulators[id].enable_bit); |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 295 | mc13783_unlock(priv->mc13783); |
| 296 | |
| 297 | return ret; |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 298 | } |
| 299 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 300 | static int mc13783_regulator_disable(struct regulator_dev *rdev) |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 301 | { |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 302 | struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev); |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 303 | int id = rdev_get_id(rdev); |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 304 | int ret; |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 305 | |
| 306 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); |
| 307 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 308 | mc13783_lock(priv->mc13783); |
| 309 | ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg, |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 310 | mc13783_regulators[id].enable_bit, 0); |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 311 | mc13783_unlock(priv->mc13783); |
| 312 | |
| 313 | return ret; |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 314 | } |
| 315 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 316 | static int mc13783_regulator_is_enabled(struct regulator_dev *rdev) |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 317 | { |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 318 | struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev); |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 319 | int ret, id = rdev_get_id(rdev); |
| 320 | unsigned int val; |
| 321 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 322 | mc13783_lock(priv->mc13783); |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 323 | ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val); |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 324 | mc13783_unlock(priv->mc13783); |
| 325 | |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 326 | if (ret) |
| 327 | return ret; |
| 328 | |
| 329 | return (val & mc13783_regulators[id].enable_bit) != 0; |
| 330 | } |
| 331 | |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 332 | static int mc13783_regulator_list_voltage(struct regulator_dev *rdev, |
| 333 | unsigned selector) |
| 334 | { |
| 335 | int id = rdev_get_id(rdev); |
| 336 | |
| 337 | if (selector >= mc13783_regulators[id].desc.n_voltages) |
| 338 | return -EINVAL; |
| 339 | |
| 340 | return mc13783_regulators[id].voltages[selector]; |
| 341 | } |
| 342 | |
| 343 | static int mc13783_get_best_voltage_index(struct regulator_dev *rdev, |
| 344 | int min_uV, int max_uV) |
| 345 | { |
| 346 | int reg_id = rdev_get_id(rdev); |
| 347 | int i; |
| 348 | int bestmatch; |
| 349 | int bestindex; |
| 350 | |
| 351 | /* |
| 352 | * Locate the minimum voltage fitting the criteria on |
| 353 | * this regulator. The switchable voltages are not |
| 354 | * in strict falling order so we need to check them |
| 355 | * all for the best match. |
| 356 | */ |
| 357 | bestmatch = INT_MAX; |
| 358 | bestindex = -1; |
| 359 | for (i = 0; i < mc13783_regulators[reg_id].desc.n_voltages; i++) { |
| 360 | if (mc13783_regulators[reg_id].voltages[i] >= min_uV && |
| 361 | mc13783_regulators[reg_id].voltages[i] < bestmatch) { |
| 362 | bestmatch = mc13783_regulators[reg_id].voltages[i]; |
| 363 | bestindex = i; |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | if (bestindex < 0 || bestmatch > max_uV) { |
| 368 | dev_warn(&rdev->dev, "no possible value for %d<=x<=%d uV\n", |
| 369 | min_uV, max_uV); |
| 370 | return -EINVAL; |
| 371 | } |
| 372 | return bestindex; |
| 373 | } |
| 374 | |
| 375 | static int mc13783_regulator_set_voltage(struct regulator_dev *rdev, |
| 376 | int min_uV, int max_uV) |
| 377 | { |
| 378 | struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev); |
| 379 | int value, id = rdev_get_id(rdev); |
| 380 | int ret; |
| 381 | |
| 382 | dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n", |
| 383 | __func__, id, min_uV, max_uV); |
| 384 | |
| 385 | /* Find the best index */ |
| 386 | value = mc13783_get_best_voltage_index(rdev, min_uV, max_uV); |
| 387 | dev_dbg(rdev_get_dev(rdev), "%s best value: %d \n", __func__, value); |
| 388 | if (value < 0) |
| 389 | return value; |
| 390 | |
| 391 | mc13783_lock(priv->mc13783); |
| 392 | ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].vsel_reg, |
| 393 | mc13783_regulators[id].vsel_mask, |
| 394 | value << mc13783_regulators[id].vsel_shift); |
| 395 | mc13783_unlock(priv->mc13783); |
| 396 | |
| 397 | return ret; |
| 398 | } |
| 399 | |
| 400 | static int mc13783_regulator_get_voltage(struct regulator_dev *rdev) |
| 401 | { |
| 402 | struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev); |
| 403 | int ret, id = rdev_get_id(rdev); |
| 404 | unsigned int val; |
| 405 | |
| 406 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); |
| 407 | |
| 408 | mc13783_lock(priv->mc13783); |
| 409 | ret = mc13783_reg_read(priv->mc13783, |
| 410 | mc13783_regulators[id].vsel_reg, &val); |
| 411 | mc13783_unlock(priv->mc13783); |
| 412 | |
| 413 | if (ret) |
| 414 | return ret; |
| 415 | |
| 416 | val = (val & mc13783_regulators[id].vsel_mask) |
| 417 | >> mc13783_regulators[id].vsel_shift; |
| 418 | |
| 419 | dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val); |
| 420 | |
| 421 | BUG_ON(val < 0 || val > mc13783_regulators[id].desc.n_voltages); |
| 422 | |
| 423 | return mc13783_regulators[id].voltages[val]; |
| 424 | } |
| 425 | |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 426 | static struct regulator_ops mc13783_regulator_ops = { |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 427 | .enable = mc13783_regulator_enable, |
| 428 | .disable = mc13783_regulator_disable, |
| 429 | .is_enabled = mc13783_regulator_is_enabled, |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 430 | .list_voltage = mc13783_regulator_list_voltage, |
| 431 | .set_voltage = mc13783_regulator_set_voltage, |
| 432 | .get_voltage = mc13783_regulator_get_voltage, |
| 433 | }; |
| 434 | |
| 435 | static int mc13783_fixed_regulator_set_voltage(struct regulator_dev *rdev, |
| 436 | int min_uV, int max_uV) |
| 437 | { |
| 438 | int id = rdev_get_id(rdev); |
| 439 | |
| 440 | dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n", |
| 441 | __func__, id, min_uV, max_uV); |
| 442 | |
Axel Lin | 1dcc434 | 2010-05-06 11:33:36 +0800 | [diff] [blame] | 443 | if (min_uV >= mc13783_regulators[id].voltages[0] && |
| 444 | max_uV <= mc13783_regulators[id].voltages[0]) |
Alberto Panizzo | 1bd588f | 2009-12-14 18:26:38 +0100 | [diff] [blame] | 445 | return 0; |
| 446 | else |
| 447 | return -EINVAL; |
| 448 | } |
| 449 | |
| 450 | static int mc13783_fixed_regulator_get_voltage(struct regulator_dev *rdev) |
| 451 | { |
| 452 | int id = rdev_get_id(rdev); |
| 453 | |
| 454 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); |
| 455 | |
| 456 | return mc13783_regulators[id].voltages[0]; |
| 457 | } |
| 458 | |
| 459 | static struct regulator_ops mc13783_fixed_regulator_ops = { |
| 460 | .enable = mc13783_regulator_enable, |
| 461 | .disable = mc13783_regulator_disable, |
| 462 | .is_enabled = mc13783_regulator_is_enabled, |
| 463 | .list_voltage = mc13783_regulator_list_voltage, |
| 464 | .set_voltage = mc13783_fixed_regulator_set_voltage, |
| 465 | .get_voltage = mc13783_fixed_regulator_get_voltage, |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 466 | }; |
| 467 | |
Alberto Panizzo | f4b97b3 | 2010-01-19 12:48:54 +0100 | [diff] [blame] | 468 | int mc13783_powermisc_rmw(struct mc13783_regulator_priv *priv, u32 mask, |
| 469 | u32 val) |
| 470 | { |
| 471 | struct mc13783 *mc13783 = priv->mc13783; |
| 472 | int ret; |
| 473 | u32 valread; |
| 474 | |
| 475 | BUG_ON(val & ~mask); |
| 476 | |
| 477 | ret = mc13783_reg_read(mc13783, MC13783_REG_POWERMISC, &valread); |
| 478 | if (ret) |
| 479 | return ret; |
| 480 | |
| 481 | /* Update the stored state for Power Gates. */ |
| 482 | priv->powermisc_pwgt_state = |
| 483 | (priv->powermisc_pwgt_state & ~mask) | val; |
| 484 | priv->powermisc_pwgt_state &= MC13783_REG_POWERMISC_PWGTSPI_M; |
| 485 | |
| 486 | /* Construct the new register value */ |
| 487 | valread = (valread & ~mask) | val; |
| 488 | /* Overwrite the PWGTxEN with the stored version */ |
| 489 | valread = (valread & ~MC13783_REG_POWERMISC_PWGTSPI_M) | |
| 490 | priv->powermisc_pwgt_state; |
| 491 | |
| 492 | return mc13783_reg_write(mc13783, MC13783_REG_POWERMISC, valread); |
| 493 | } |
| 494 | |
| 495 | static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev) |
| 496 | { |
| 497 | struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev); |
| 498 | int id = rdev_get_id(rdev); |
| 499 | int ret; |
| 500 | u32 en_val = mc13783_regulators[id].enable_bit; |
| 501 | |
| 502 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); |
| 503 | |
| 504 | /* Power Gate enable value is 0 */ |
| 505 | if (id == MC13783_REGU_PWGT1SPI || |
| 506 | id == MC13783_REGU_PWGT2SPI) |
| 507 | en_val = 0; |
| 508 | |
| 509 | mc13783_lock(priv->mc13783); |
| 510 | ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit, |
| 511 | en_val); |
| 512 | mc13783_unlock(priv->mc13783); |
| 513 | |
| 514 | return ret; |
| 515 | } |
| 516 | |
| 517 | static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev) |
| 518 | { |
| 519 | struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev); |
| 520 | int id = rdev_get_id(rdev); |
| 521 | int ret; |
| 522 | u32 dis_val = 0; |
| 523 | |
| 524 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); |
| 525 | |
| 526 | /* Power Gate disable value is 1 */ |
| 527 | if (id == MC13783_REGU_PWGT1SPI || |
| 528 | id == MC13783_REGU_PWGT2SPI) |
| 529 | dis_val = mc13783_regulators[id].enable_bit; |
| 530 | |
| 531 | mc13783_lock(priv->mc13783); |
| 532 | ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit, |
| 533 | dis_val); |
| 534 | mc13783_unlock(priv->mc13783); |
| 535 | |
| 536 | return ret; |
| 537 | } |
| 538 | |
| 539 | static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev) |
| 540 | { |
| 541 | struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev); |
| 542 | int ret, id = rdev_get_id(rdev); |
| 543 | unsigned int val; |
| 544 | |
| 545 | mc13783_lock(priv->mc13783); |
| 546 | ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val); |
| 547 | mc13783_unlock(priv->mc13783); |
| 548 | |
| 549 | if (ret) |
| 550 | return ret; |
| 551 | |
| 552 | /* Power Gates state is stored in powermisc_pwgt_state |
| 553 | * where the meaning of bits is negated */ |
| 554 | val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) | |
| 555 | (priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M); |
| 556 | |
| 557 | return (val & mc13783_regulators[id].enable_bit) != 0; |
| 558 | } |
| 559 | |
| 560 | static struct regulator_ops mc13783_gpo_regulator_ops = { |
| 561 | .enable = mc13783_gpo_regulator_enable, |
| 562 | .disable = mc13783_gpo_regulator_disable, |
| 563 | .is_enabled = mc13783_gpo_regulator_is_enabled, |
| 564 | .list_voltage = mc13783_regulator_list_voltage, |
| 565 | .set_voltage = mc13783_fixed_regulator_set_voltage, |
| 566 | .get_voltage = mc13783_fixed_regulator_get_voltage, |
| 567 | }; |
| 568 | |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 569 | static int __devinit mc13783_regulator_probe(struct platform_device *pdev) |
| 570 | { |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 571 | struct mc13783_regulator_priv *priv; |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 572 | struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent); |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 573 | struct mc13783_regulator_platform_data *pdata = |
| 574 | dev_get_platdata(&pdev->dev); |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 575 | struct mc13783_regulator_init_data *init_data; |
| 576 | int i, ret; |
| 577 | |
| 578 | dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id); |
| 579 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 580 | priv = kzalloc(sizeof(*priv) + |
| 581 | pdata->num_regulators * sizeof(priv->regulators[0]), |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 582 | GFP_KERNEL); |
| 583 | if (!priv) |
| 584 | return -ENOMEM; |
| 585 | |
| 586 | priv->mc13783 = mc13783; |
| 587 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 588 | for (i = 0; i < pdata->num_regulators; i++) { |
| 589 | init_data = &pdata->regulators[i]; |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 590 | priv->regulators[i] = regulator_register( |
| 591 | &mc13783_regulators[init_data->id].desc, |
| 592 | &pdev->dev, init_data->init_data, priv); |
| 593 | |
| 594 | if (IS_ERR(priv->regulators[i])) { |
| 595 | dev_err(&pdev->dev, "failed to register regulator %s\n", |
| 596 | mc13783_regulators[i].desc.name); |
| 597 | ret = PTR_ERR(priv->regulators[i]); |
| 598 | goto err; |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | platform_set_drvdata(pdev, priv); |
| 603 | |
| 604 | return 0; |
| 605 | err: |
| 606 | while (--i >= 0) |
| 607 | regulator_unregister(priv->regulators[i]); |
| 608 | |
| 609 | kfree(priv); |
| 610 | |
| 611 | return ret; |
| 612 | } |
| 613 | |
| 614 | static int __devexit mc13783_regulator_remove(struct platform_device *pdev) |
| 615 | { |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 616 | struct mc13783_regulator_priv *priv = platform_get_drvdata(pdev); |
| 617 | struct mc13783_regulator_platform_data *pdata = |
| 618 | dev_get_platdata(&pdev->dev); |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 619 | int i; |
| 620 | |
Axel Lin | 58d5765 | 2010-04-19 09:58:02 +0800 | [diff] [blame] | 621 | platform_set_drvdata(pdev, NULL); |
| 622 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 623 | for (i = 0; i < pdata->num_regulators; i++) |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 624 | regulator_unregister(priv->regulators[i]); |
| 625 | |
Axel Lin | 58d5765 | 2010-04-19 09:58:02 +0800 | [diff] [blame] | 626 | kfree(priv); |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 627 | return 0; |
| 628 | } |
| 629 | |
| 630 | static struct platform_driver mc13783_regulator_driver = { |
| 631 | .driver = { |
| 632 | .name = "mc13783-regulator", |
| 633 | .owner = THIS_MODULE, |
| 634 | }, |
| 635 | .remove = __devexit_p(mc13783_regulator_remove), |
Alberto Panizzo | 735eb93 | 2009-12-14 18:53:35 +0100 | [diff] [blame] | 636 | .probe = mc13783_regulator_probe, |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 637 | }; |
| 638 | |
| 639 | static int __init mc13783_regulator_init(void) |
| 640 | { |
Alberto Panizzo | 735eb93 | 2009-12-14 18:53:35 +0100 | [diff] [blame] | 641 | return platform_driver_register(&mc13783_regulator_driver); |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 642 | } |
| 643 | subsys_initcall(mc13783_regulator_init); |
| 644 | |
| 645 | static void __exit mc13783_regulator_exit(void) |
| 646 | { |
| 647 | platform_driver_unregister(&mc13783_regulator_driver); |
| 648 | } |
| 649 | module_exit(mc13783_regulator_exit); |
| 650 | |
Uwe Kleine-König | a10099b | 2009-11-10 09:18:07 +0100 | [diff] [blame] | 651 | MODULE_LICENSE("GPL v2"); |
Axel Lin | 1dcc434 | 2010-05-06 11:33:36 +0800 | [diff] [blame] | 652 | MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); |
Sascha Hauer | 295c08b | 2009-08-19 01:43:50 +0200 | [diff] [blame] | 653 | MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC"); |
| 654 | MODULE_ALIAS("platform:mc13783-regulator"); |