drivers/mfd/mt6397-core.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2014 MediaTek Inc.
   4  * Author: Flora Fu, MediaTek
   5  */
   6
   7 #include <linux/interrupt.h>
   8 #include <linux/ioport.h>
   9 #include <linux/irqdomain.h>
  10 #include <linux/module.h>
  11 #include <linux/of.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/regmap.h>
  14 #include <linux/mfd/core.h>
  15 #include <linux/mfd/mt6323/core.h>
  16 #include <linux/mfd/mt6328/core.h>
  17 #include <linux/mfd/mt6331/core.h>
  18 #include <linux/mfd/mt6357/core.h>
  19 #include <linux/mfd/mt6358/core.h>
  20 #include <linux/mfd/mt6359/core.h>
  21 #include <linux/mfd/mt6397/core.h>
  22 #include <linux/mfd/mt6323/registers.h>
  23 #include <linux/mfd/mt6328/registers.h>
  24 #include <linux/mfd/mt6331/registers.h>
  25 #include <linux/mfd/mt6357/registers.h>
  26 #include <linux/mfd/mt6358/registers.h>
  27 #include <linux/mfd/mt6359/registers.h>
  28 #include <linux/mfd/mt6397/registers.h>
  29
  30 #define MT6323_RTC_BASE         0x8000
  31 #define MT6323_RTC_SIZE         0x40
  32
  33 #define MT6357_RTC_BASE         0x0588
  34 #define MT6357_RTC_SIZE         0x3c
  35
  36 #define MT6331_RTC_BASE         0x4000
  37 #define MT6331_RTC_SIZE         0x40
  38
  39 #define MT6358_RTC_BASE         0x0588
  40 #define MT6358_RTC_SIZE         0x3c
  41
  42 #define MT6397_RTC_BASE         0xe000
  43 #define MT6397_RTC_SIZE         0x3e
  44
  45 #define MT6323_PWRC_BASE        0x8000
  46 #define MT6323_PWRC_SIZE        0x40
  47
  48 static const struct resource mt6323_rtc_resources[] = {
  49         DEFINE_RES_MEM(MT6323_RTC_BASE, MT6323_RTC_SIZE),
  50         DEFINE_RES_IRQ(MT6323_IRQ_STATUS_RTC),
  51 };
  52
  53 static const struct resource mt6357_rtc_resources[] = {
  54         DEFINE_RES_MEM(MT6357_RTC_BASE, MT6357_RTC_SIZE),
  55         DEFINE_RES_IRQ(MT6357_IRQ_RTC),
  56 };
  57
  58 static const struct resource mt6331_rtc_resources[] = {
  59         DEFINE_RES_MEM(MT6331_RTC_BASE, MT6331_RTC_SIZE),
  60         DEFINE_RES_IRQ(MT6331_IRQ_STATUS_RTC),
  61 };
  62
  63 static const struct resource mt6358_rtc_resources[] = {
  64         DEFINE_RES_MEM(MT6358_RTC_BASE, MT6358_RTC_SIZE),
  65         DEFINE_RES_IRQ(MT6358_IRQ_RTC),
  66 };
  67
  68 static const struct resource mt6397_rtc_resources[] = {
  69         DEFINE_RES_MEM(MT6397_RTC_BASE, MT6397_RTC_SIZE),
  70         DEFINE_RES_IRQ(MT6397_IRQ_RTC),
  71 };
  72
  73 static const struct resource mt6358_keys_resources[] = {
  74         DEFINE_RES_IRQ_NAMED(MT6358_IRQ_PWRKEY, "powerkey"),
  75         DEFINE_RES_IRQ_NAMED(MT6358_IRQ_HOMEKEY, "homekey"),
  76         DEFINE_RES_IRQ_NAMED(MT6358_IRQ_PWRKEY_R, "powerkey_r"),
  77         DEFINE_RES_IRQ_NAMED(MT6358_IRQ_HOMEKEY_R, "homekey_r"),
  78 };
  79
  80 static const struct resource mt6359_keys_resources[] = {
  81         DEFINE_RES_IRQ_NAMED(MT6359_IRQ_PWRKEY, "powerkey"),
  82         DEFINE_RES_IRQ_NAMED(MT6359_IRQ_HOMEKEY, "homekey"),
  83         DEFINE_RES_IRQ_NAMED(MT6359_IRQ_PWRKEY_R, "powerkey_r"),
  84         DEFINE_RES_IRQ_NAMED(MT6359_IRQ_HOMEKEY_R, "homekey_r"),
  85 };
  86
  87 static const struct resource mt6323_keys_resources[] = {
  88         DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_PWRKEY, "powerkey"),
  89         DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_FCHRKEY, "homekey"),
  90 };
  91
  92 static const struct resource mt6328_keys_resources[] = {
  93         DEFINE_RES_IRQ_NAMED(MT6328_IRQ_STATUS_PWRKEY, "powerkey"),
  94         DEFINE_RES_IRQ_NAMED(MT6328_IRQ_STATUS_HOMEKEY, "homekey"),
  95         DEFINE_RES_IRQ_NAMED(MT6328_IRQ_STATUS_PWRKEY_R, "powerkey_r"),
  96         DEFINE_RES_IRQ_NAMED(MT6328_IRQ_STATUS_HOMEKEY_R, "homekey_r"),
  97 };
  98
  99 static const struct resource mt6357_keys_resources[] = {
 100         DEFINE_RES_IRQ_NAMED(MT6357_IRQ_PWRKEY, "powerkey"),
 101         DEFINE_RES_IRQ_NAMED(MT6357_IRQ_HOMEKEY, "homekey"),
 102         DEFINE_RES_IRQ_NAMED(MT6357_IRQ_PWRKEY_R, "powerkey_r"),
 103         DEFINE_RES_IRQ_NAMED(MT6357_IRQ_HOMEKEY_R, "homekey_r"),
 104 };
 105
 106 static const struct resource mt6331_keys_resources[] = {
 107         DEFINE_RES_IRQ_NAMED(MT6331_IRQ_STATUS_PWRKEY, "powerkey"),
 108         DEFINE_RES_IRQ_NAMED(MT6331_IRQ_STATUS_HOMEKEY, "homekey"),
 109 };
 110
 111 static const struct resource mt6397_keys_resources[] = {
 112         DEFINE_RES_IRQ_NAMED(MT6397_IRQ_PWRKEY, "powerkey"),
 113         DEFINE_RES_IRQ_NAMED(MT6397_IRQ_HOMEKEY, "homekey"),
 114 };
 115
 116 static const struct resource mt6323_pwrc_resources[] = {
 117         DEFINE_RES_MEM(MT6323_PWRC_BASE, MT6323_PWRC_SIZE),
 118 };
 119
 120 static const struct mfd_cell mt6323_devs[] = {
 121         {
 122                 .name = "mt6323-rtc",
 123                 .num_resources = ARRAY_SIZE(mt6323_rtc_resources),
 124                 .resources = mt6323_rtc_resources,
 125                 .of_compatible = "mediatek,mt6323-rtc",
 126         }, {
 127                 .name = "mt6323-regulator",
 128                 .of_compatible = "mediatek,mt6323-regulator"
 129         }, {
 130                 .name = "mt6323-led",
 131                 .of_compatible = "mediatek,mt6323-led"
 132         }, {
 133                 .name = "mtk-pmic-keys",
 134                 .num_resources = ARRAY_SIZE(mt6323_keys_resources),
 135                 .resources = mt6323_keys_resources,
 136                 .of_compatible = "mediatek,mt6323-keys"
 137         }, {
 138                 .name = "mt6323-pwrc",
 139                 .num_resources = ARRAY_SIZE(mt6323_pwrc_resources),
 140                 .resources = mt6323_pwrc_resources,
 141                 .of_compatible = "mediatek,mt6323-pwrc"
 142         },
 143 };
 144
 145 static const struct mfd_cell mt6328_devs[] = {
 146         {
 147                 .name = "mt6328-regulator",
 148                 .of_compatible = "mediatek,mt6328-regulator"
 149         }, {
 150                 .name = "mtk-pmic-keys",
 151                 .num_resources = ARRAY_SIZE(mt6328_keys_resources),
 152                 .resources = mt6328_keys_resources,
 153                 .of_compatible = "mediatek,mt6328-keys"
 154         },
 155 };
 156
 157 static const struct mfd_cell mt6357_devs[] = {
 158         {
 159                 .name = "mt6359-auxadc",
 160                 .of_compatible = "mediatek,mt6357-auxadc"
 161         }, {
 162                 .name = "mt6357-regulator",
 163         }, {
 164                 .name = "mt6357-rtc",
 165                 .num_resources = ARRAY_SIZE(mt6357_rtc_resources),
 166                 .resources = mt6357_rtc_resources,
 167                 .of_compatible = "mediatek,mt6357-rtc",
 168         }, {
 169                 .name = "mt6357-sound",
 170                 .of_compatible = "mediatek,mt6357-sound"
 171         }, {
 172                 .name = "mtk-pmic-keys",
 173                 .num_resources = ARRAY_SIZE(mt6357_keys_resources),
 174                 .resources = mt6357_keys_resources,
 175                 .of_compatible = "mediatek,mt6357-keys"
 176         },
 177 };
 178
 179 /* MT6331 is always used in combination with MT6332 */
 180 static const struct mfd_cell mt6331_mt6332_devs[] = {
 181         {
 182                 .name = "mt6331-rtc",
 183                 .num_resources = ARRAY_SIZE(mt6331_rtc_resources),
 184                 .resources = mt6331_rtc_resources,
 185                 .of_compatible = "mediatek,mt6331-rtc",
 186         }, {
 187                 .name = "mt6331-regulator",
 188                 .of_compatible = "mediatek,mt6331-regulator"
 189         }, {
 190                 .name = "mt6332-regulator",
 191                 .of_compatible = "mediatek,mt6332-regulator"
 192         }, {
 193                 .name = "mtk-pmic-keys",
 194                 .num_resources = ARRAY_SIZE(mt6331_keys_resources),
 195                 .resources = mt6331_keys_resources,
 196                 .of_compatible = "mediatek,mt6331-keys"
 197         },
 198 };
 199
 200 static const struct mfd_cell mt6358_devs[] = {
 201         {
 202                 .name = "mt6359-auxadc",
 203                 .of_compatible = "mediatek,mt6358-auxadc"
 204         }, {
 205                 .name = "mt6358-regulator",
 206                 .of_compatible = "mediatek,mt6358-regulator"
 207         }, {
 208                 .name = "mt6358-rtc",
 209                 .num_resources = ARRAY_SIZE(mt6358_rtc_resources),
 210                 .resources = mt6358_rtc_resources,
 211                 .of_compatible = "mediatek,mt6358-rtc",
 212         }, {
 213                 .name = "mt6358-sound",
 214                 .of_compatible = "mediatek,mt6358-sound"
 215         }, {
 216                 .name = "mt6358-keys",
 217                 .num_resources = ARRAY_SIZE(mt6358_keys_resources),
 218                 .resources = mt6358_keys_resources,
 219                 .of_compatible = "mediatek,mt6358-keys"
 220         },
 221 };
 222
 223 static const struct mfd_cell mt6359_devs[] = {
 224         {
 225                 .name = "mt6359-auxadc",
 226                 .of_compatible = "mediatek,mt6359-auxadc"
 227         },
 228         { .name = "mt6359-regulator", },
 229         {
 230                 .name = "mt6359-rtc",
 231                 .num_resources = ARRAY_SIZE(mt6358_rtc_resources),
 232                 .resources = mt6358_rtc_resources,
 233                 .of_compatible = "mediatek,mt6358-rtc",
 234         },
 235         { .name = "mt6359-sound", },
 236         {
 237                 .name = "mtk-pmic-keys",
 238                 .num_resources = ARRAY_SIZE(mt6359_keys_resources),
 239                 .resources = mt6359_keys_resources,
 240                 .of_compatible = "mediatek,mt6359-keys"
 241         },
 242 };
 243
 244 static const struct mfd_cell mt6397_devs[] = {
 245         {
 246                 .name = "mt6397-rtc",
 247                 .num_resources = ARRAY_SIZE(mt6397_rtc_resources),
 248                 .resources = mt6397_rtc_resources,
 249                 .of_compatible = "mediatek,mt6397-rtc",
 250         }, {
 251                 .name = "mt6397-regulator",
 252                 .of_compatible = "mediatek,mt6397-regulator",
 253         }, {
 254                 .name = "mt6397-codec",
 255                 .of_compatible = "mediatek,mt6397-codec",
 256         }, {
 257                 .name = "mt6397-clk",
 258                 .of_compatible = "mediatek,mt6397-clk",
 259         }, {
 260                 .name = "mt6397-pinctrl",
 261                 .of_compatible = "mediatek,mt6397-pinctrl",
 262         }, {
 263                 .name = "mtk-pmic-keys",
 264                 .num_resources = ARRAY_SIZE(mt6397_keys_resources),
 265                 .resources = mt6397_keys_resources,
 266                 .of_compatible = "mediatek,mt6397-keys"
 267         }
 268 };
 269
 270 struct chip_data {
 271         u32 cid_addr;
 272         u32 cid_shift;
 273         const struct mfd_cell *cells;
 274         int cell_size;
 275         int (*irq_init)(struct mt6397_chip *chip);
 276 };
 277
 278 static const struct chip_data mt6323_core = {
 279         .cid_addr = MT6323_CID,
 280         .cid_shift = 0,
 281         .cells = mt6323_devs,
 282         .cell_size = ARRAY_SIZE(mt6323_devs),
 283         .irq_init = mt6397_irq_init,
 284 };
 285
 286 static const struct chip_data mt6328_core = {
 287         .cid_addr = MT6328_HWCID,
 288         .cid_shift = 0,
 289         .cells = mt6328_devs,
 290         .cell_size = ARRAY_SIZE(mt6328_devs),
 291         .irq_init = mt6397_irq_init,
 292 };
 293
 294 static const struct chip_data mt6357_core = {
 295         .cid_addr = MT6357_SWCID,
 296         .cid_shift = 8,
 297         .cells = mt6357_devs,
 298         .cell_size = ARRAY_SIZE(mt6357_devs),
 299         .irq_init = mt6358_irq_init,
 300 };
 301
 302 static const struct chip_data mt6331_mt6332_core = {
 303         .cid_addr = MT6331_HWCID,
 304         .cid_shift = 0,
 305         .cells = mt6331_mt6332_devs,
 306         .cell_size = ARRAY_SIZE(mt6331_mt6332_devs),
 307         .irq_init = mt6397_irq_init,
 308 };
 309
 310 static const struct chip_data mt6358_core = {
 311         .cid_addr = MT6358_SWCID,
 312         .cid_shift = 8,
 313         .cells = mt6358_devs,
 314         .cell_size = ARRAY_SIZE(mt6358_devs),
 315         .irq_init = mt6358_irq_init,
 316 };
 317
 318 static const struct chip_data mt6359_core = {
 319         .cid_addr = MT6359_SWCID,
 320         .cid_shift = 8,
 321         .cells = mt6359_devs,
 322         .cell_size = ARRAY_SIZE(mt6359_devs),
 323         .irq_init = mt6358_irq_init,
 324 };
 325
 326 static const struct chip_data mt6397_core = {
 327         .cid_addr = MT6397_CID,
 328         .cid_shift = 0,
 329         .cells = mt6397_devs,
 330         .cell_size = ARRAY_SIZE(mt6397_devs),
 331         .irq_init = mt6397_irq_init,
 332 };
 333
 334 static int mt6397_probe(struct platform_device *pdev)
 335 {
 336         int ret;
 337         unsigned int id = 0;
 338         struct mt6397_chip *pmic;
 339         const struct chip_data *pmic_core;
 340
 341         pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
 342         if (!pmic)
 343                 return -ENOMEM;
 344
 345         pmic->dev = &pdev->dev;
 346
 347         /*
 348          * mt6397 MFD is child device of soc pmic wrapper.
 349          * Regmap is set from its parent.
 350          */
 351         pmic->regmap = dev_get_regmap(pdev->dev.parent, NULL);
 352         if (!pmic->regmap)
 353                 return -ENODEV;
 354
 355         pmic_core = of_device_get_match_data(&pdev->dev);
 356         if (!pmic_core)
 357                 return -ENODEV;
 358
 359         ret = regmap_read(pmic->regmap, pmic_core->cid_addr, &id);
 360         if (ret) {
 361                 dev_err(&pdev->dev, "Failed to read chip id: %d\n", ret);
 362                 return ret;
 363         }
 364
 365         pmic->chip_id = (id >> pmic_core->cid_shift) & 0xff;
 366
 367         platform_set_drvdata(pdev, pmic);
 368
 369         pmic->irq = platform_get_irq(pdev, 0);
 370         if (pmic->irq <= 0)
 371                 return pmic->irq;
 372
 373         ret = pmic_core->irq_init(pmic);
 374         if (ret)
 375                 return ret;
 376
 377         ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
 378                                    pmic_core->cells, pmic_core->cell_size,
 379                                    NULL, 0, pmic->irq_domain);
 380         if (ret) {
 381                 irq_domain_remove(pmic->irq_domain);
 382                 dev_err(&pdev->dev, "failed to add child devices: %d\n", ret);
 383         }
 384
 385         return ret;
 386 }
 387
 388 static const struct of_device_id mt6397_of_match[] = {
 389         {
 390                 .compatible = "mediatek,mt6323",
 391                 .data = &mt6323_core,
 392         }, {
 393                 .compatible = "mediatek,mt6328",
 394                 .data = &mt6328_core,
 395         }, {
 396                 .compatible = "mediatek,mt6331",
 397                 .data = &mt6331_mt6332_core,
 398         }, {
 399                 .compatible = "mediatek,mt6357",
 400                 .data = &mt6357_core,
 401         }, {
 402                 .compatible = "mediatek,mt6358",
 403                 .data = &mt6358_core,
 404         }, {
 405                 .compatible = "mediatek,mt6359",
 406                 .data = &mt6359_core,
 407         }, {
 408                 .compatible = "mediatek,mt6397",
 409                 .data = &mt6397_core,
 410         }, {
 411                 /* sentinel */
 412         }
 413 };
 414 MODULE_DEVICE_TABLE(of, mt6397_of_match);
 415
 416 static const struct platform_device_id mt6397_id[] = {
 417         { "mt6397", 0 },
 418         { },
 419 };
 420 MODULE_DEVICE_TABLE(platform, mt6397_id);
 421
 422 static struct platform_driver mt6397_driver = {
 423         .probe = mt6397_probe,
 424         .driver = {
 425                 .name = "mt6397",
 426                 .of_match_table = mt6397_of_match,
 427         },
 428         .id_table = mt6397_id,
 429 };
 430
 431 module_platform_driver(mt6397_driver);
 432
 433 MODULE_AUTHOR("Flora Fu, MediaTek");
 434 MODULE_DESCRIPTION("Driver for MediaTek MT6397 PMIC");
 435 MODULE_LICENSE("GPL");