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