Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/gpio.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/of.h> |
| 17 | #include <linux/pinctrl/pinconf-generic.h> |
| 18 | #include <linux/pinctrl/pinconf.h> |
| 19 | #include <linux/pinctrl/pinmux.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/regmap.h> |
| 22 | #include <linux/slab.h> |
| 23 | #include <linux/types.h> |
| 24 | |
| 25 | #include <dt-bindings/pinctrl/qcom,pmic-mpp.h> |
| 26 | |
| 27 | #include "../core.h" |
| 28 | #include "../pinctrl-utils.h" |
| 29 | |
| 30 | #define PMIC_MPP_ADDRESS_RANGE 0x100 |
| 31 | |
| 32 | /* |
| 33 | * Pull Up Values - it indicates whether a pull-up should be |
| 34 | * applied for bidirectional mode only. The hardware ignores the |
| 35 | * configuration when operating in other modes. |
| 36 | */ |
| 37 | #define PMIC_MPP_PULL_UP_0P6KOHM 0 |
| 38 | #define PMIC_MPP_PULL_UP_10KOHM 1 |
| 39 | #define PMIC_MPP_PULL_UP_30KOHM 2 |
| 40 | #define PMIC_MPP_PULL_UP_OPEN 3 |
| 41 | |
| 42 | /* type registers base address bases */ |
| 43 | #define PMIC_MPP_REG_TYPE 0x4 |
| 44 | #define PMIC_MPP_REG_SUBTYPE 0x5 |
| 45 | |
| 46 | /* mpp peripheral type and subtype values */ |
| 47 | #define PMIC_MPP_TYPE 0x11 |
| 48 | #define PMIC_MPP_SUBTYPE_4CH_NO_ANA_OUT 0x3 |
| 49 | #define PMIC_MPP_SUBTYPE_ULT_4CH_NO_ANA_OUT 0x4 |
| 50 | #define PMIC_MPP_SUBTYPE_4CH_NO_SINK 0x5 |
| 51 | #define PMIC_MPP_SUBTYPE_ULT_4CH_NO_SINK 0x6 |
| 52 | #define PMIC_MPP_SUBTYPE_4CH_FULL_FUNC 0x7 |
| 53 | #define PMIC_MPP_SUBTYPE_8CH_FULL_FUNC 0xf |
| 54 | |
| 55 | #define PMIC_MPP_REG_RT_STS 0x10 |
| 56 | #define PMIC_MPP_REG_RT_STS_VAL_MASK 0x1 |
| 57 | |
| 58 | /* control register base address bases */ |
| 59 | #define PMIC_MPP_REG_MODE_CTL 0x40 |
| 60 | #define PMIC_MPP_REG_DIG_VIN_CTL 0x41 |
| 61 | #define PMIC_MPP_REG_DIG_PULL_CTL 0x42 |
| 62 | #define PMIC_MPP_REG_DIG_IN_CTL 0x43 |
| 63 | #define PMIC_MPP_REG_EN_CTL 0x46 |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 64 | #define PMIC_MPP_REG_AOUT_CTL 0x48 |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 65 | #define PMIC_MPP_REG_AIN_CTL 0x4a |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 66 | #define PMIC_MPP_REG_SINK_CTL 0x4c |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 67 | |
| 68 | /* PMIC_MPP_REG_MODE_CTL */ |
| 69 | #define PMIC_MPP_REG_MODE_VALUE_MASK 0x1 |
| 70 | #define PMIC_MPP_REG_MODE_FUNCTION_SHIFT 1 |
| 71 | #define PMIC_MPP_REG_MODE_FUNCTION_MASK 0x7 |
| 72 | #define PMIC_MPP_REG_MODE_DIR_SHIFT 4 |
| 73 | #define PMIC_MPP_REG_MODE_DIR_MASK 0x7 |
| 74 | |
| 75 | /* PMIC_MPP_REG_DIG_VIN_CTL */ |
| 76 | #define PMIC_MPP_REG_VIN_SHIFT 0 |
| 77 | #define PMIC_MPP_REG_VIN_MASK 0x7 |
| 78 | |
| 79 | /* PMIC_MPP_REG_DIG_PULL_CTL */ |
| 80 | #define PMIC_MPP_REG_PULL_SHIFT 0 |
| 81 | #define PMIC_MPP_REG_PULL_MASK 0x7 |
| 82 | |
| 83 | /* PMIC_MPP_REG_EN_CTL */ |
| 84 | #define PMIC_MPP_REG_MASTER_EN_SHIFT 7 |
| 85 | |
| 86 | /* PMIC_MPP_REG_AIN_CTL */ |
| 87 | #define PMIC_MPP_REG_AIN_ROUTE_SHIFT 0 |
| 88 | #define PMIC_MPP_REG_AIN_ROUTE_MASK 0x7 |
| 89 | |
Bjorn Andersson | eaaf5dd | 2015-06-17 23:47:27 -0700 | [diff] [blame] | 90 | #define PMIC_MPP_MODE_DIGITAL_INPUT 0 |
| 91 | #define PMIC_MPP_MODE_DIGITAL_OUTPUT 1 |
| 92 | #define PMIC_MPP_MODE_DIGITAL_BIDIR 2 |
| 93 | #define PMIC_MPP_MODE_ANALOG_BIDIR 3 |
| 94 | #define PMIC_MPP_MODE_ANALOG_INPUT 4 |
| 95 | #define PMIC_MPP_MODE_ANALOG_OUTPUT 5 |
| 96 | #define PMIC_MPP_MODE_CURRENT_SINK 6 |
| 97 | |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 98 | #define PMIC_MPP_SELECTOR_NORMAL 0 |
| 99 | #define PMIC_MPP_SELECTOR_PAIRED 1 |
| 100 | #define PMIC_MPP_SELECTOR_DTEST_FIRST 4 |
| 101 | |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 102 | #define PMIC_MPP_PHYSICAL_OFFSET 1 |
| 103 | |
| 104 | /* Qualcomm specific pin configurations */ |
| 105 | #define PMIC_MPP_CONF_AMUX_ROUTE (PIN_CONFIG_END + 1) |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 106 | #define PMIC_MPP_CONF_ANALOG_LEVEL (PIN_CONFIG_END + 2) |
| 107 | #define PMIC_MPP_CONF_DTEST_SELECTOR (PIN_CONFIG_END + 3) |
| 108 | #define PMIC_MPP_CONF_PAIRED (PIN_CONFIG_END + 4) |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 109 | |
| 110 | /** |
| 111 | * struct pmic_mpp_pad - keep current MPP settings |
| 112 | * @base: Address base in SPMI device. |
| 113 | * @irq: IRQ number which this MPP generate. |
| 114 | * @is_enabled: Set to false when MPP should be put in high Z state. |
| 115 | * @out_value: Cached pin output value. |
| 116 | * @output_enabled: Set to true if MPP output logic is enabled. |
| 117 | * @input_enabled: Set to true if MPP input buffer logic is enabled. |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 118 | * @paired: Pin operates in paired mode |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 119 | * @num_sources: Number of power-sources supported by this MPP. |
| 120 | * @power_source: Current power-source used. |
| 121 | * @amux_input: Set the source for analog input. |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 122 | * @aout_level: Analog output level |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 123 | * @pullup: Pullup resistor value. Valid in Bidirectional mode only. |
| 124 | * @function: See pmic_mpp_functions[]. |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 125 | * @drive_strength: Amount of current in sink mode |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 126 | * @dtest: DTEST route selector |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 127 | */ |
| 128 | struct pmic_mpp_pad { |
| 129 | u16 base; |
| 130 | int irq; |
| 131 | bool is_enabled; |
| 132 | bool out_value; |
| 133 | bool output_enabled; |
| 134 | bool input_enabled; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 135 | bool paired; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 136 | unsigned int num_sources; |
| 137 | unsigned int power_source; |
| 138 | unsigned int amux_input; |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 139 | unsigned int aout_level; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 140 | unsigned int pullup; |
| 141 | unsigned int function; |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 142 | unsigned int drive_strength; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 143 | unsigned int dtest; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 144 | }; |
| 145 | |
| 146 | struct pmic_mpp_state { |
| 147 | struct device *dev; |
| 148 | struct regmap *map; |
| 149 | struct pinctrl_dev *ctrl; |
| 150 | struct gpio_chip chip; |
| 151 | }; |
| 152 | |
Bjorn Andersson | ba5f94c | 2015-06-17 23:47:25 -0700 | [diff] [blame] | 153 | static const struct pinconf_generic_params pmic_mpp_bindings[] = { |
| 154 | {"qcom,amux-route", PMIC_MPP_CONF_AMUX_ROUTE, 0}, |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 155 | {"qcom,analog-level", PMIC_MPP_CONF_ANALOG_LEVEL, 0}, |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 156 | {"qcom,dtest", PMIC_MPP_CONF_DTEST_SELECTOR, 0}, |
| 157 | {"qcom,paired", PMIC_MPP_CONF_PAIRED, 0}, |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 158 | }; |
| 159 | |
Bjorn Andersson | ba5f94c | 2015-06-17 23:47:25 -0700 | [diff] [blame] | 160 | #ifdef CONFIG_DEBUG_FS |
| 161 | static const struct pin_config_item pmic_conf_items[] = { |
| 162 | PCONFDUMP(PMIC_MPP_CONF_AMUX_ROUTE, "analog mux", NULL, true), |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 163 | PCONFDUMP(PMIC_MPP_CONF_ANALOG_LEVEL, "analog level", NULL, true), |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 164 | PCONFDUMP(PMIC_MPP_CONF_DTEST_SELECTOR, "dtest", NULL, true), |
| 165 | PCONFDUMP(PMIC_MPP_CONF_PAIRED, "paired", NULL, false), |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 166 | }; |
Bjorn Andersson | ba5f94c | 2015-06-17 23:47:25 -0700 | [diff] [blame] | 167 | #endif |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 168 | |
| 169 | static const char *const pmic_mpp_groups[] = { |
| 170 | "mpp1", "mpp2", "mpp3", "mpp4", "mpp5", "mpp6", "mpp7", "mpp8", |
| 171 | }; |
| 172 | |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 173 | #define PMIC_MPP_DIGITAL 0 |
| 174 | #define PMIC_MPP_ANALOG 1 |
| 175 | #define PMIC_MPP_SINK 2 |
| 176 | |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 177 | static const char *const pmic_mpp_functions[] = { |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 178 | "digital", "analog", "sink" |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 179 | }; |
| 180 | |
| 181 | static inline struct pmic_mpp_state *to_mpp_state(struct gpio_chip *chip) |
| 182 | { |
| 183 | return container_of(chip, struct pmic_mpp_state, chip); |
| 184 | }; |
| 185 | |
| 186 | static int pmic_mpp_read(struct pmic_mpp_state *state, |
| 187 | struct pmic_mpp_pad *pad, unsigned int addr) |
| 188 | { |
| 189 | unsigned int val; |
| 190 | int ret; |
| 191 | |
| 192 | ret = regmap_read(state->map, pad->base + addr, &val); |
| 193 | if (ret < 0) |
| 194 | dev_err(state->dev, "read 0x%x failed\n", addr); |
| 195 | else |
| 196 | ret = val; |
| 197 | |
| 198 | return ret; |
| 199 | } |
| 200 | |
| 201 | static int pmic_mpp_write(struct pmic_mpp_state *state, |
| 202 | struct pmic_mpp_pad *pad, unsigned int addr, |
| 203 | unsigned int val) |
| 204 | { |
| 205 | int ret; |
| 206 | |
| 207 | ret = regmap_write(state->map, pad->base + addr, val); |
| 208 | if (ret < 0) |
| 209 | dev_err(state->dev, "write 0x%x failed\n", addr); |
| 210 | |
| 211 | return ret; |
| 212 | } |
| 213 | |
| 214 | static int pmic_mpp_get_groups_count(struct pinctrl_dev *pctldev) |
| 215 | { |
| 216 | /* Every PIN is a group */ |
| 217 | return pctldev->desc->npins; |
| 218 | } |
| 219 | |
| 220 | static const char *pmic_mpp_get_group_name(struct pinctrl_dev *pctldev, |
| 221 | unsigned pin) |
| 222 | { |
| 223 | return pctldev->desc->pins[pin].name; |
| 224 | } |
| 225 | |
| 226 | static int pmic_mpp_get_group_pins(struct pinctrl_dev *pctldev, |
| 227 | unsigned pin, |
| 228 | const unsigned **pins, unsigned *num_pins) |
| 229 | { |
| 230 | *pins = &pctldev->desc->pins[pin].number; |
| 231 | *num_pins = 1; |
| 232 | return 0; |
| 233 | } |
| 234 | |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 235 | static const struct pinctrl_ops pmic_mpp_pinctrl_ops = { |
| 236 | .get_groups_count = pmic_mpp_get_groups_count, |
| 237 | .get_group_name = pmic_mpp_get_group_name, |
| 238 | .get_group_pins = pmic_mpp_get_group_pins, |
Bjorn Andersson | ba5f94c | 2015-06-17 23:47:25 -0700 | [diff] [blame] | 239 | .dt_node_to_map = pinconf_generic_dt_node_to_map_group, |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 240 | .dt_free_map = pinctrl_utils_dt_free_map, |
| 241 | }; |
| 242 | |
| 243 | static int pmic_mpp_get_functions_count(struct pinctrl_dev *pctldev) |
| 244 | { |
| 245 | return ARRAY_SIZE(pmic_mpp_functions); |
| 246 | } |
| 247 | |
| 248 | static const char *pmic_mpp_get_function_name(struct pinctrl_dev *pctldev, |
| 249 | unsigned function) |
| 250 | { |
| 251 | return pmic_mpp_functions[function]; |
| 252 | } |
| 253 | |
| 254 | static int pmic_mpp_get_function_groups(struct pinctrl_dev *pctldev, |
| 255 | unsigned function, |
| 256 | const char *const **groups, |
| 257 | unsigned *const num_qgroups) |
| 258 | { |
| 259 | *groups = pmic_mpp_groups; |
| 260 | *num_qgroups = pctldev->desc->npins; |
| 261 | return 0; |
| 262 | } |
| 263 | |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 264 | static int pmic_mpp_write_mode_ctl(struct pmic_mpp_state *state, |
| 265 | struct pmic_mpp_pad *pad) |
| 266 | { |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 267 | unsigned int mode; |
| 268 | unsigned int sel; |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 269 | unsigned int val; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 270 | unsigned int en; |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 271 | |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 272 | switch (pad->function) { |
| 273 | case PMIC_MPP_ANALOG: |
| 274 | if (pad->input_enabled && pad->output_enabled) |
| 275 | mode = PMIC_MPP_MODE_ANALOG_BIDIR; |
| 276 | else if (pad->input_enabled) |
| 277 | mode = PMIC_MPP_MODE_ANALOG_INPUT; |
| 278 | else |
| 279 | mode = PMIC_MPP_MODE_ANALOG_OUTPUT; |
| 280 | break; |
| 281 | case PMIC_MPP_DIGITAL: |
| 282 | if (pad->input_enabled && pad->output_enabled) |
| 283 | mode = PMIC_MPP_MODE_DIGITAL_BIDIR; |
| 284 | else if (pad->input_enabled) |
| 285 | mode = PMIC_MPP_MODE_DIGITAL_INPUT; |
| 286 | else |
| 287 | mode = PMIC_MPP_MODE_DIGITAL_OUTPUT; |
| 288 | break; |
| 289 | case PMIC_MPP_SINK: |
| 290 | default: |
| 291 | mode = PMIC_MPP_MODE_CURRENT_SINK; |
| 292 | break; |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 293 | } |
| 294 | |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 295 | if (pad->dtest) |
| 296 | sel = PMIC_MPP_SELECTOR_DTEST_FIRST + pad->dtest - 1; |
| 297 | else if (pad->paired) |
| 298 | sel = PMIC_MPP_SELECTOR_PAIRED; |
| 299 | else |
| 300 | sel = PMIC_MPP_SELECTOR_NORMAL; |
| 301 | |
| 302 | en = !!pad->out_value; |
| 303 | |
| 304 | val = mode << PMIC_MPP_REG_MODE_DIR_SHIFT | |
| 305 | sel << PMIC_MPP_REG_MODE_FUNCTION_SHIFT | |
| 306 | en; |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 307 | |
| 308 | return pmic_mpp_write(state, pad, PMIC_MPP_REG_MODE_CTL, val); |
| 309 | } |
| 310 | |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 311 | static int pmic_mpp_set_mux(struct pinctrl_dev *pctldev, unsigned function, |
| 312 | unsigned pin) |
| 313 | { |
| 314 | struct pmic_mpp_state *state = pinctrl_dev_get_drvdata(pctldev); |
| 315 | struct pmic_mpp_pad *pad; |
| 316 | unsigned int val; |
| 317 | int ret; |
| 318 | |
| 319 | pad = pctldev->desc->pins[pin].drv_data; |
| 320 | |
| 321 | pad->function = function; |
| 322 | |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 323 | ret = pmic_mpp_write_mode_ctl(state, pad); |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 324 | |
| 325 | val = pad->is_enabled << PMIC_MPP_REG_MASTER_EN_SHIFT; |
| 326 | |
| 327 | return pmic_mpp_write(state, pad, PMIC_MPP_REG_EN_CTL, val); |
| 328 | } |
| 329 | |
| 330 | static const struct pinmux_ops pmic_mpp_pinmux_ops = { |
| 331 | .get_functions_count = pmic_mpp_get_functions_count, |
| 332 | .get_function_name = pmic_mpp_get_function_name, |
| 333 | .get_function_groups = pmic_mpp_get_function_groups, |
| 334 | .set_mux = pmic_mpp_set_mux, |
| 335 | }; |
| 336 | |
| 337 | static int pmic_mpp_config_get(struct pinctrl_dev *pctldev, |
| 338 | unsigned int pin, unsigned long *config) |
| 339 | { |
| 340 | unsigned param = pinconf_to_config_param(*config); |
| 341 | struct pmic_mpp_pad *pad; |
| 342 | unsigned arg = 0; |
| 343 | |
| 344 | pad = pctldev->desc->pins[pin].drv_data; |
| 345 | |
| 346 | switch (param) { |
| 347 | case PIN_CONFIG_BIAS_DISABLE: |
| 348 | arg = pad->pullup == PMIC_MPP_PULL_UP_OPEN; |
| 349 | break; |
| 350 | case PIN_CONFIG_BIAS_PULL_UP: |
| 351 | switch (pad->pullup) { |
| 352 | case PMIC_MPP_PULL_UP_OPEN: |
| 353 | arg = 0; |
| 354 | break; |
| 355 | case PMIC_MPP_PULL_UP_0P6KOHM: |
| 356 | arg = 600; |
| 357 | break; |
| 358 | case PMIC_MPP_PULL_UP_10KOHM: |
| 359 | arg = 10000; |
| 360 | break; |
| 361 | case PMIC_MPP_PULL_UP_30KOHM: |
| 362 | arg = 30000; |
| 363 | break; |
| 364 | default: |
| 365 | return -EINVAL; |
| 366 | } |
| 367 | break; |
| 368 | case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: |
| 369 | arg = !pad->is_enabled; |
| 370 | break; |
| 371 | case PIN_CONFIG_POWER_SOURCE: |
| 372 | arg = pad->power_source; |
| 373 | break; |
| 374 | case PIN_CONFIG_INPUT_ENABLE: |
| 375 | arg = pad->input_enabled; |
| 376 | break; |
| 377 | case PIN_CONFIG_OUTPUT: |
| 378 | arg = pad->out_value; |
| 379 | break; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 380 | case PMIC_MPP_CONF_DTEST_SELECTOR: |
| 381 | arg = pad->dtest; |
| 382 | break; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 383 | case PMIC_MPP_CONF_AMUX_ROUTE: |
| 384 | arg = pad->amux_input; |
| 385 | break; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 386 | case PMIC_MPP_CONF_PAIRED: |
| 387 | arg = pad->paired; |
| 388 | break; |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 389 | case PIN_CONFIG_DRIVE_STRENGTH: |
| 390 | arg = pad->drive_strength; |
| 391 | break; |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 392 | case PMIC_MPP_CONF_ANALOG_LEVEL: |
| 393 | arg = pad->aout_level; |
| 394 | break; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 395 | default: |
| 396 | return -EINVAL; |
| 397 | } |
| 398 | |
| 399 | /* Convert register value to pinconf value */ |
| 400 | *config = pinconf_to_config_packed(param, arg); |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | static int pmic_mpp_config_set(struct pinctrl_dev *pctldev, unsigned int pin, |
| 405 | unsigned long *configs, unsigned nconfs) |
| 406 | { |
| 407 | struct pmic_mpp_state *state = pinctrl_dev_get_drvdata(pctldev); |
| 408 | struct pmic_mpp_pad *pad; |
| 409 | unsigned param, arg; |
| 410 | unsigned int val; |
| 411 | int i, ret; |
| 412 | |
| 413 | pad = pctldev->desc->pins[pin].drv_data; |
| 414 | |
Bjorn Andersson | 7682b37 | 2015-06-17 23:47:26 -0700 | [diff] [blame] | 415 | /* Make it possible to enable the pin, by not setting high impedance */ |
| 416 | pad->is_enabled = true; |
| 417 | |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 418 | for (i = 0; i < nconfs; i++) { |
| 419 | param = pinconf_to_config_param(configs[i]); |
| 420 | arg = pinconf_to_config_argument(configs[i]); |
| 421 | |
| 422 | switch (param) { |
| 423 | case PIN_CONFIG_BIAS_DISABLE: |
| 424 | pad->pullup = PMIC_MPP_PULL_UP_OPEN; |
| 425 | break; |
| 426 | case PIN_CONFIG_BIAS_PULL_UP: |
| 427 | switch (arg) { |
| 428 | case 600: |
| 429 | pad->pullup = PMIC_MPP_PULL_UP_0P6KOHM; |
| 430 | break; |
| 431 | case 10000: |
| 432 | pad->pullup = PMIC_MPP_PULL_UP_10KOHM; |
| 433 | break; |
| 434 | case 30000: |
| 435 | pad->pullup = PMIC_MPP_PULL_UP_30KOHM; |
| 436 | break; |
| 437 | default: |
| 438 | return -EINVAL; |
| 439 | } |
| 440 | break; |
| 441 | case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: |
| 442 | pad->is_enabled = false; |
| 443 | break; |
| 444 | case PIN_CONFIG_POWER_SOURCE: |
| 445 | if (arg >= pad->num_sources) |
| 446 | return -EINVAL; |
| 447 | pad->power_source = arg; |
| 448 | break; |
| 449 | case PIN_CONFIG_INPUT_ENABLE: |
| 450 | pad->input_enabled = arg ? true : false; |
| 451 | break; |
| 452 | case PIN_CONFIG_OUTPUT: |
| 453 | pad->output_enabled = true; |
| 454 | pad->out_value = arg; |
| 455 | break; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 456 | case PMIC_MPP_CONF_DTEST_SELECTOR: |
| 457 | pad->dtest = arg; |
| 458 | break; |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 459 | case PIN_CONFIG_DRIVE_STRENGTH: |
| 460 | arg = pad->drive_strength; |
| 461 | break; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 462 | case PMIC_MPP_CONF_AMUX_ROUTE: |
| 463 | if (arg >= PMIC_MPP_AMUX_ROUTE_ABUS4) |
| 464 | return -EINVAL; |
| 465 | pad->amux_input = arg; |
| 466 | break; |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 467 | case PMIC_MPP_CONF_ANALOG_LEVEL: |
| 468 | pad->aout_level = arg; |
| 469 | break; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 470 | case PMIC_MPP_CONF_PAIRED: |
| 471 | pad->paired = !!arg; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 472 | break; |
| 473 | default: |
| 474 | return -EINVAL; |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | val = pad->power_source << PMIC_MPP_REG_VIN_SHIFT; |
| 479 | |
| 480 | ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_DIG_VIN_CTL, val); |
| 481 | if (ret < 0) |
| 482 | return ret; |
| 483 | |
| 484 | val = pad->pullup << PMIC_MPP_REG_PULL_SHIFT; |
| 485 | |
| 486 | ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_DIG_PULL_CTL, val); |
| 487 | if (ret < 0) |
| 488 | return ret; |
| 489 | |
| 490 | val = pad->amux_input & PMIC_MPP_REG_AIN_ROUTE_MASK; |
| 491 | |
| 492 | ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_AIN_CTL, val); |
| 493 | if (ret < 0) |
| 494 | return ret; |
| 495 | |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 496 | ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_AOUT_CTL, pad->aout_level); |
| 497 | if (ret < 0) |
| 498 | return ret; |
| 499 | |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 500 | ret = pmic_mpp_write_mode_ctl(state, pad); |
Bjorn Andersson | 7682b37 | 2015-06-17 23:47:26 -0700 | [diff] [blame] | 501 | if (ret < 0) |
| 502 | return ret; |
| 503 | |
| 504 | val = pad->is_enabled << PMIC_MPP_REG_MASTER_EN_SHIFT; |
| 505 | |
| 506 | return pmic_mpp_write(state, pad, PMIC_MPP_REG_EN_CTL, val); |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 507 | } |
| 508 | |
| 509 | static void pmic_mpp_config_dbg_show(struct pinctrl_dev *pctldev, |
| 510 | struct seq_file *s, unsigned pin) |
| 511 | { |
| 512 | struct pmic_mpp_state *state = pinctrl_dev_get_drvdata(pctldev); |
| 513 | struct pmic_mpp_pad *pad; |
Bjorn Andersson | 7682b37 | 2015-06-17 23:47:26 -0700 | [diff] [blame] | 514 | int ret; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 515 | |
| 516 | static const char *const biases[] = { |
| 517 | "0.6kOhm", "10kOhm", "30kOhm", "Disabled" |
| 518 | }; |
| 519 | |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 520 | pad = pctldev->desc->pins[pin].drv_data; |
| 521 | |
| 522 | seq_printf(s, " mpp%-2d:", pin + PMIC_MPP_PHYSICAL_OFFSET); |
| 523 | |
Bjorn Andersson | 7682b37 | 2015-06-17 23:47:26 -0700 | [diff] [blame] | 524 | if (!pad->is_enabled) { |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 525 | seq_puts(s, " ---"); |
| 526 | } else { |
| 527 | |
| 528 | if (pad->input_enabled) { |
| 529 | ret = pmic_mpp_read(state, pad, PMIC_MPP_REG_RT_STS); |
Ivan T. Ivanov | 4e637ac | 2015-04-09 18:18:37 +0300 | [diff] [blame] | 530 | if (ret < 0) |
| 531 | return; |
| 532 | |
| 533 | ret &= PMIC_MPP_REG_RT_STS_VAL_MASK; |
| 534 | pad->out_value = ret; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | seq_printf(s, " %-4s", pad->output_enabled ? "out" : "in"); |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 538 | seq_printf(s, " %-7s", pmic_mpp_functions[pad->function]); |
| 539 | seq_printf(s, " vin-%d", pad->power_source); |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 540 | seq_printf(s, " %d", pad->aout_level); |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 541 | seq_printf(s, " %-8s", biases[pad->pullup]); |
| 542 | seq_printf(s, " %-4s", pad->out_value ? "high" : "low"); |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 543 | if (pad->dtest) |
| 544 | seq_printf(s, " dtest%d", pad->dtest); |
| 545 | if (pad->paired) |
| 546 | seq_puts(s, " paired"); |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 547 | } |
| 548 | } |
| 549 | |
| 550 | static const struct pinconf_ops pmic_mpp_pinconf_ops = { |
Bjorn Andersson | ba5f94c | 2015-06-17 23:47:25 -0700 | [diff] [blame] | 551 | .is_generic = true, |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 552 | .pin_config_group_get = pmic_mpp_config_get, |
| 553 | .pin_config_group_set = pmic_mpp_config_set, |
| 554 | .pin_config_group_dbg_show = pmic_mpp_config_dbg_show, |
| 555 | }; |
| 556 | |
| 557 | static int pmic_mpp_direction_input(struct gpio_chip *chip, unsigned pin) |
| 558 | { |
| 559 | struct pmic_mpp_state *state = to_mpp_state(chip); |
| 560 | unsigned long config; |
| 561 | |
| 562 | config = pinconf_to_config_packed(PIN_CONFIG_INPUT_ENABLE, 1); |
| 563 | |
| 564 | return pmic_mpp_config_set(state->ctrl, pin, &config, 1); |
| 565 | } |
| 566 | |
| 567 | static int pmic_mpp_direction_output(struct gpio_chip *chip, |
| 568 | unsigned pin, int val) |
| 569 | { |
| 570 | struct pmic_mpp_state *state = to_mpp_state(chip); |
| 571 | unsigned long config; |
| 572 | |
| 573 | config = pinconf_to_config_packed(PIN_CONFIG_OUTPUT, val); |
| 574 | |
| 575 | return pmic_mpp_config_set(state->ctrl, pin, &config, 1); |
| 576 | } |
| 577 | |
| 578 | static int pmic_mpp_get(struct gpio_chip *chip, unsigned pin) |
| 579 | { |
| 580 | struct pmic_mpp_state *state = to_mpp_state(chip); |
| 581 | struct pmic_mpp_pad *pad; |
| 582 | int ret; |
| 583 | |
| 584 | pad = state->ctrl->desc->pins[pin].drv_data; |
| 585 | |
| 586 | if (pad->input_enabled) { |
| 587 | ret = pmic_mpp_read(state, pad, PMIC_MPP_REG_RT_STS); |
| 588 | if (ret < 0) |
| 589 | return ret; |
| 590 | |
| 591 | pad->out_value = ret & PMIC_MPP_REG_RT_STS_VAL_MASK; |
| 592 | } |
| 593 | |
| 594 | return pad->out_value; |
| 595 | } |
| 596 | |
| 597 | static void pmic_mpp_set(struct gpio_chip *chip, unsigned pin, int value) |
| 598 | { |
| 599 | struct pmic_mpp_state *state = to_mpp_state(chip); |
| 600 | unsigned long config; |
| 601 | |
| 602 | config = pinconf_to_config_packed(PIN_CONFIG_OUTPUT, value); |
| 603 | |
| 604 | pmic_mpp_config_set(state->ctrl, pin, &config, 1); |
| 605 | } |
| 606 | |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 607 | static int pmic_mpp_of_xlate(struct gpio_chip *chip, |
| 608 | const struct of_phandle_args *gpio_desc, |
| 609 | u32 *flags) |
| 610 | { |
| 611 | if (chip->of_gpio_n_cells < 2) |
| 612 | return -EINVAL; |
| 613 | |
| 614 | if (flags) |
| 615 | *flags = gpio_desc->args[1]; |
| 616 | |
| 617 | return gpio_desc->args[0] - PMIC_MPP_PHYSICAL_OFFSET; |
| 618 | } |
| 619 | |
| 620 | static int pmic_mpp_to_irq(struct gpio_chip *chip, unsigned pin) |
| 621 | { |
| 622 | struct pmic_mpp_state *state = to_mpp_state(chip); |
| 623 | struct pmic_mpp_pad *pad; |
| 624 | |
| 625 | pad = state->ctrl->desc->pins[pin].drv_data; |
| 626 | |
| 627 | return pad->irq; |
| 628 | } |
| 629 | |
| 630 | static void pmic_mpp_dbg_show(struct seq_file *s, struct gpio_chip *chip) |
| 631 | { |
| 632 | struct pmic_mpp_state *state = to_mpp_state(chip); |
| 633 | unsigned i; |
| 634 | |
| 635 | for (i = 0; i < chip->ngpio; i++) { |
| 636 | pmic_mpp_config_dbg_show(state->ctrl, s, i); |
| 637 | seq_puts(s, "\n"); |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | static const struct gpio_chip pmic_mpp_gpio_template = { |
| 642 | .direction_input = pmic_mpp_direction_input, |
| 643 | .direction_output = pmic_mpp_direction_output, |
| 644 | .get = pmic_mpp_get, |
| 645 | .set = pmic_mpp_set, |
Jonas Gorski | 98c85d5 | 2015-10-11 17:34:19 +0200 | [diff] [blame] | 646 | .request = gpiochip_generic_request, |
| 647 | .free = gpiochip_generic_free, |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 648 | .of_xlate = pmic_mpp_of_xlate, |
| 649 | .to_irq = pmic_mpp_to_irq, |
| 650 | .dbg_show = pmic_mpp_dbg_show, |
| 651 | }; |
| 652 | |
| 653 | static int pmic_mpp_populate(struct pmic_mpp_state *state, |
| 654 | struct pmic_mpp_pad *pad) |
| 655 | { |
| 656 | int type, subtype, val, dir; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 657 | unsigned int sel; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 658 | |
| 659 | type = pmic_mpp_read(state, pad, PMIC_MPP_REG_TYPE); |
| 660 | if (type < 0) |
| 661 | return type; |
| 662 | |
| 663 | if (type != PMIC_MPP_TYPE) { |
| 664 | dev_err(state->dev, "incorrect block type 0x%x at 0x%x\n", |
| 665 | type, pad->base); |
| 666 | return -ENODEV; |
| 667 | } |
| 668 | |
| 669 | subtype = pmic_mpp_read(state, pad, PMIC_MPP_REG_SUBTYPE); |
| 670 | if (subtype < 0) |
| 671 | return subtype; |
| 672 | |
| 673 | switch (subtype) { |
| 674 | case PMIC_MPP_SUBTYPE_4CH_NO_ANA_OUT: |
| 675 | case PMIC_MPP_SUBTYPE_ULT_4CH_NO_ANA_OUT: |
| 676 | case PMIC_MPP_SUBTYPE_4CH_NO_SINK: |
| 677 | case PMIC_MPP_SUBTYPE_ULT_4CH_NO_SINK: |
| 678 | case PMIC_MPP_SUBTYPE_4CH_FULL_FUNC: |
| 679 | pad->num_sources = 4; |
| 680 | break; |
| 681 | case PMIC_MPP_SUBTYPE_8CH_FULL_FUNC: |
| 682 | pad->num_sources = 8; |
| 683 | break; |
| 684 | default: |
| 685 | dev_err(state->dev, "unknown MPP type 0x%x at 0x%x\n", |
| 686 | subtype, pad->base); |
| 687 | return -ENODEV; |
| 688 | } |
| 689 | |
| 690 | val = pmic_mpp_read(state, pad, PMIC_MPP_REG_MODE_CTL); |
| 691 | if (val < 0) |
| 692 | return val; |
| 693 | |
| 694 | pad->out_value = val & PMIC_MPP_REG_MODE_VALUE_MASK; |
| 695 | |
| 696 | dir = val >> PMIC_MPP_REG_MODE_DIR_SHIFT; |
| 697 | dir &= PMIC_MPP_REG_MODE_DIR_MASK; |
| 698 | |
| 699 | switch (dir) { |
Bjorn Andersson | eaaf5dd | 2015-06-17 23:47:27 -0700 | [diff] [blame] | 700 | case PMIC_MPP_MODE_DIGITAL_INPUT: |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 701 | pad->input_enabled = true; |
| 702 | pad->output_enabled = false; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 703 | pad->function = PMIC_MPP_DIGITAL; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 704 | break; |
Bjorn Andersson | eaaf5dd | 2015-06-17 23:47:27 -0700 | [diff] [blame] | 705 | case PMIC_MPP_MODE_DIGITAL_OUTPUT: |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 706 | pad->input_enabled = false; |
| 707 | pad->output_enabled = true; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 708 | pad->function = PMIC_MPP_DIGITAL; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 709 | break; |
Bjorn Andersson | eaaf5dd | 2015-06-17 23:47:27 -0700 | [diff] [blame] | 710 | case PMIC_MPP_MODE_DIGITAL_BIDIR: |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 711 | pad->input_enabled = true; |
| 712 | pad->output_enabled = true; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 713 | pad->function = PMIC_MPP_DIGITAL; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 714 | break; |
Bjorn Andersson | eaaf5dd | 2015-06-17 23:47:27 -0700 | [diff] [blame] | 715 | case PMIC_MPP_MODE_ANALOG_BIDIR: |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 716 | pad->input_enabled = true; |
| 717 | pad->output_enabled = true; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 718 | pad->function = PMIC_MPP_ANALOG; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 719 | break; |
Bjorn Andersson | eaaf5dd | 2015-06-17 23:47:27 -0700 | [diff] [blame] | 720 | case PMIC_MPP_MODE_ANALOG_INPUT: |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 721 | pad->input_enabled = true; |
| 722 | pad->output_enabled = false; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 723 | pad->function = PMIC_MPP_ANALOG; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 724 | break; |
Bjorn Andersson | eaaf5dd | 2015-06-17 23:47:27 -0700 | [diff] [blame] | 725 | case PMIC_MPP_MODE_ANALOG_OUTPUT: |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 726 | pad->input_enabled = false; |
| 727 | pad->output_enabled = true; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 728 | pad->function = PMIC_MPP_ANALOG; |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 729 | break; |
| 730 | case PMIC_MPP_MODE_CURRENT_SINK: |
| 731 | pad->input_enabled = false; |
| 732 | pad->output_enabled = true; |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 733 | pad->function = PMIC_MPP_SINK; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 734 | break; |
| 735 | default: |
| 736 | dev_err(state->dev, "unknown MPP direction\n"); |
| 737 | return -ENODEV; |
| 738 | } |
| 739 | |
Bjorn Andersson | eb5c144 | 2015-06-17 23:47:30 -0700 | [diff] [blame] | 740 | sel = val >> PMIC_MPP_REG_MODE_FUNCTION_SHIFT; |
| 741 | sel &= PMIC_MPP_REG_MODE_FUNCTION_MASK; |
| 742 | |
| 743 | if (sel >= PMIC_MPP_SELECTOR_DTEST_FIRST) |
| 744 | pad->dtest = sel + 1; |
| 745 | else if (sel == PMIC_MPP_SELECTOR_PAIRED) |
| 746 | pad->paired = true; |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 747 | |
| 748 | val = pmic_mpp_read(state, pad, PMIC_MPP_REG_DIG_VIN_CTL); |
| 749 | if (val < 0) |
| 750 | return val; |
| 751 | |
| 752 | pad->power_source = val >> PMIC_MPP_REG_VIN_SHIFT; |
| 753 | pad->power_source &= PMIC_MPP_REG_VIN_MASK; |
| 754 | |
| 755 | val = pmic_mpp_read(state, pad, PMIC_MPP_REG_DIG_PULL_CTL); |
| 756 | if (val < 0) |
| 757 | return val; |
| 758 | |
| 759 | pad->pullup = val >> PMIC_MPP_REG_PULL_SHIFT; |
| 760 | pad->pullup &= PMIC_MPP_REG_PULL_MASK; |
| 761 | |
| 762 | val = pmic_mpp_read(state, pad, PMIC_MPP_REG_AIN_CTL); |
| 763 | if (val < 0) |
| 764 | return val; |
| 765 | |
| 766 | pad->amux_input = val >> PMIC_MPP_REG_AIN_ROUTE_SHIFT; |
| 767 | pad->amux_input &= PMIC_MPP_REG_AIN_ROUTE_MASK; |
| 768 | |
Bjorn Andersson | 0e94804 | 2015-06-17 23:47:28 -0700 | [diff] [blame] | 769 | val = pmic_mpp_read(state, pad, PMIC_MPP_REG_SINK_CTL); |
| 770 | if (val < 0) |
| 771 | return val; |
| 772 | |
| 773 | pad->drive_strength = val; |
| 774 | |
Bjorn Andersson | 099f3e4 | 2015-07-14 23:40:33 -0700 | [diff] [blame] | 775 | val = pmic_mpp_read(state, pad, PMIC_MPP_REG_AOUT_CTL); |
| 776 | if (val < 0) |
| 777 | return val; |
| 778 | |
| 779 | pad->aout_level = val; |
| 780 | |
Bjorn Andersson | 7682b37 | 2015-06-17 23:47:26 -0700 | [diff] [blame] | 781 | val = pmic_mpp_read(state, pad, PMIC_MPP_REG_EN_CTL); |
| 782 | if (val < 0) |
| 783 | return val; |
| 784 | |
| 785 | pad->is_enabled = !!val; |
| 786 | |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 787 | return 0; |
| 788 | } |
| 789 | |
| 790 | static int pmic_mpp_probe(struct platform_device *pdev) |
| 791 | { |
| 792 | struct device *dev = &pdev->dev; |
| 793 | struct pinctrl_pin_desc *pindesc; |
| 794 | struct pinctrl_desc *pctrldesc; |
| 795 | struct pmic_mpp_pad *pad, *pads; |
| 796 | struct pmic_mpp_state *state; |
| 797 | int ret, npins, i; |
| 798 | u32 res[2]; |
| 799 | |
| 800 | ret = of_property_read_u32_array(dev->of_node, "reg", res, 2); |
| 801 | if (ret < 0) { |
| 802 | dev_err(dev, "missing base address and/or range"); |
| 803 | return ret; |
| 804 | } |
| 805 | |
| 806 | npins = res[1] / PMIC_MPP_ADDRESS_RANGE; |
| 807 | if (!npins) |
| 808 | return -EINVAL; |
| 809 | |
| 810 | BUG_ON(npins > ARRAY_SIZE(pmic_mpp_groups)); |
| 811 | |
| 812 | state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL); |
| 813 | if (!state) |
| 814 | return -ENOMEM; |
| 815 | |
| 816 | platform_set_drvdata(pdev, state); |
| 817 | |
| 818 | state->dev = &pdev->dev; |
| 819 | state->map = dev_get_regmap(dev->parent, NULL); |
| 820 | |
| 821 | pindesc = devm_kcalloc(dev, npins, sizeof(*pindesc), GFP_KERNEL); |
| 822 | if (!pindesc) |
| 823 | return -ENOMEM; |
| 824 | |
| 825 | pads = devm_kcalloc(dev, npins, sizeof(*pads), GFP_KERNEL); |
| 826 | if (!pads) |
| 827 | return -ENOMEM; |
| 828 | |
| 829 | pctrldesc = devm_kzalloc(dev, sizeof(*pctrldesc), GFP_KERNEL); |
| 830 | if (!pctrldesc) |
| 831 | return -ENOMEM; |
| 832 | |
| 833 | pctrldesc->pctlops = &pmic_mpp_pinctrl_ops; |
| 834 | pctrldesc->pmxops = &pmic_mpp_pinmux_ops; |
| 835 | pctrldesc->confops = &pmic_mpp_pinconf_ops; |
| 836 | pctrldesc->owner = THIS_MODULE; |
| 837 | pctrldesc->name = dev_name(dev); |
| 838 | pctrldesc->pins = pindesc; |
| 839 | pctrldesc->npins = npins; |
| 840 | |
Bjorn Andersson | ba5f94c | 2015-06-17 23:47:25 -0700 | [diff] [blame] | 841 | pctrldesc->num_custom_params = ARRAY_SIZE(pmic_mpp_bindings); |
| 842 | pctrldesc->custom_params = pmic_mpp_bindings; |
| 843 | #ifdef CONFIG_DEBUG_FS |
| 844 | pctrldesc->custom_conf_items = pmic_conf_items; |
| 845 | #endif |
| 846 | |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 847 | for (i = 0; i < npins; i++, pindesc++) { |
| 848 | pad = &pads[i]; |
| 849 | pindesc->drv_data = pad; |
| 850 | pindesc->number = i; |
| 851 | pindesc->name = pmic_mpp_groups[i]; |
| 852 | |
| 853 | pad->irq = platform_get_irq(pdev, i); |
| 854 | if (pad->irq < 0) |
| 855 | return pad->irq; |
| 856 | |
| 857 | pad->base = res[0] + i * PMIC_MPP_ADDRESS_RANGE; |
| 858 | |
| 859 | ret = pmic_mpp_populate(state, pad); |
| 860 | if (ret < 0) |
| 861 | return ret; |
| 862 | } |
| 863 | |
| 864 | state->chip = pmic_mpp_gpio_template; |
| 865 | state->chip.dev = dev; |
| 866 | state->chip.base = -1; |
| 867 | state->chip.ngpio = npins; |
| 868 | state->chip.label = dev_name(dev); |
| 869 | state->chip.of_gpio_n_cells = 2; |
| 870 | state->chip.can_sleep = false; |
| 871 | |
| 872 | state->ctrl = pinctrl_register(pctrldesc, dev, state); |
Masahiro Yamada | 323de9e | 2015-06-09 13:01:16 +0900 | [diff] [blame] | 873 | if (IS_ERR(state->ctrl)) |
| 874 | return PTR_ERR(state->ctrl); |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 875 | |
| 876 | ret = gpiochip_add(&state->chip); |
| 877 | if (ret) { |
| 878 | dev_err(state->dev, "can't add gpio chip\n"); |
| 879 | goto err_chip; |
| 880 | } |
| 881 | |
| 882 | ret = gpiochip_add_pin_range(&state->chip, dev_name(dev), 0, 0, npins); |
| 883 | if (ret) { |
| 884 | dev_err(dev, "failed to add pin range\n"); |
| 885 | goto err_range; |
| 886 | } |
| 887 | |
| 888 | return 0; |
| 889 | |
| 890 | err_range: |
| 891 | gpiochip_remove(&state->chip); |
| 892 | err_chip: |
| 893 | pinctrl_unregister(state->ctrl); |
| 894 | return ret; |
| 895 | } |
| 896 | |
| 897 | static int pmic_mpp_remove(struct platform_device *pdev) |
| 898 | { |
| 899 | struct pmic_mpp_state *state = platform_get_drvdata(pdev); |
| 900 | |
| 901 | gpiochip_remove(&state->chip); |
| 902 | pinctrl_unregister(state->ctrl); |
| 903 | return 0; |
| 904 | } |
| 905 | |
| 906 | static const struct of_device_id pmic_mpp_of_match[] = { |
| 907 | { .compatible = "qcom,pm8841-mpp" }, /* 4 MPP's */ |
Ivan T. Ivanov | 7414b09 | 2015-03-31 12:37:18 +0300 | [diff] [blame] | 908 | { .compatible = "qcom,pm8916-mpp" }, /* 4 MPP's */ |
Ivan T. Ivanov | cfb24f6 | 2014-10-22 12:58:47 +0300 | [diff] [blame] | 909 | { .compatible = "qcom,pm8941-mpp" }, /* 8 MPP's */ |
| 910 | { .compatible = "qcom,pma8084-mpp" }, /* 8 MPP's */ |
| 911 | { }, |
| 912 | }; |
| 913 | |
| 914 | MODULE_DEVICE_TABLE(of, pmic_mpp_of_match); |
| 915 | |
| 916 | static struct platform_driver pmic_mpp_driver = { |
| 917 | .driver = { |
| 918 | .name = "qcom-spmi-mpp", |
| 919 | .of_match_table = pmic_mpp_of_match, |
| 920 | }, |
| 921 | .probe = pmic_mpp_probe, |
| 922 | .remove = pmic_mpp_remove, |
| 923 | }; |
| 924 | |
| 925 | module_platform_driver(pmic_mpp_driver); |
| 926 | |
| 927 | MODULE_AUTHOR("Ivan T. Ivanov <iivanov@mm-sol.com>"); |
| 928 | MODULE_DESCRIPTION("Qualcomm SPMI PMIC MPP pin control driver"); |
| 929 | MODULE_ALIAS("platform:qcom-spmi-mpp"); |
| 930 | MODULE_LICENSE("GPL v2"); |