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