drivers/pinctrl/rockchip/pinctrl_rk3399.c

   1 /*
   2  * (C) Copyright 2016 Rockchip Electronics Co., Ltd
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <errno.h>
  10 #include <syscon.h>
  11 #include <asm/io.h>
  12 #include <asm/arch/grf_rk3399.h>
  13 #include <asm/arch/hardware.h>
  14 #include <asm/arch/periph.h>
  15 #include <asm/arch/clock.h>
  16 #include <dm/pinctrl.h>
  17
  18 DECLARE_GLOBAL_DATA_PTR;
  19
  20 struct rk3399_pinctrl_priv {
  21         struct rk3399_grf_regs *grf;
  22         struct rk3399_pmugrf_regs *pmugrf;
  23 };
  24
  25 static void pinctrl_rk3399_pwm_config(struct rk3399_grf_regs *grf,
  26                 struct rk3399_pmugrf_regs *pmugrf, int pwm_id)
  27 {
  28         switch (pwm_id) {
  29         case PERIPH_ID_PWM0:
  30                 rk_clrsetreg(&grf->gpio4c_iomux,
  31                              GRF_GPIO4C2_SEL_MASK,
  32                              GRF_PWM_0 << GRF_GPIO4C2_SEL_SHIFT);
  33                 break;
  34         case PERIPH_ID_PWM1:
  35                 rk_clrsetreg(&grf->gpio4c_iomux,
  36                              GRF_GPIO4C6_SEL_MASK,
  37                              GRF_PWM_1 << GRF_GPIO4C6_SEL_SHIFT);
  38                 break;
  39         case PERIPH_ID_PWM2:
  40                 rk_clrsetreg(&pmugrf->gpio1c_iomux,
  41                              PMUGRF_GPIO1C3_SEL_MASK,
  42                              PMUGRF_PWM_2 << PMUGRF_GPIO1C3_SEL_SHIFT);
  43                 break;
  44         case PERIPH_ID_PWM3:
  45                 if (readl(&pmugrf->soc_con0) & (1 << 5))
  46                         rk_clrsetreg(&pmugrf->gpio1b_iomux,
  47                                      PMUGRF_GPIO1B6_SEL_MASK,
  48                                      PMUGRF_PWM_3B << PMUGRF_GPIO1B6_SEL_SHIFT);
  49                 else
  50                         rk_clrsetreg(&pmugrf->gpio0a_iomux,
  51                                      PMUGRF_GPIO0A6_SEL_MASK,
  52                                      PMUGRF_PWM_3A << PMUGRF_GPIO0A6_SEL_SHIFT);
  53                 break;
  54         default:
  55                 debug("pwm id = %d iomux error!\n", pwm_id);
  56                 break;
  57         }
  58 }
  59
  60 static void pinctrl_rk3399_i2c_config(struct rk3399_grf_regs *grf,
  61                                       struct rk3399_pmugrf_regs *pmugrf,
  62                                       int i2c_id)
  63 {
  64         switch (i2c_id) {
  65         case PERIPH_ID_I2C0:
  66                 rk_clrsetreg(&pmugrf->gpio1b_iomux,
  67                              PMUGRF_GPIO1B7_SEL_MASK,
  68                              PMUGRF_I2C0PMU_SDA << PMUGRF_GPIO1B7_SEL_SHIFT);
  69                 rk_clrsetreg(&pmugrf->gpio1c_iomux,
  70                              PMUGRF_GPIO1C0_SEL_MASK,
  71                              PMUGRF_I2C0PMU_SCL << PMUGRF_GPIO1C0_SEL_SHIFT);
  72                 break;
  73         case PERIPH_ID_I2C1:
  74         case PERIPH_ID_I2C2:
  75         case PERIPH_ID_I2C3:
  76         case PERIPH_ID_I2C4:
  77         case PERIPH_ID_I2C5:
  78         default:
  79                 debug("i2c id = %d iomux error!\n", i2c_id);
  80                 break;
  81         }
  82 }
  83
  84 static void pinctrl_rk3399_lcdc_config(struct rk3399_grf_regs *grf, int lcd_id)
  85 {
  86         switch (lcd_id) {
  87         case PERIPH_ID_LCDC0:
  88                 break;
  89         default:
  90                 debug("lcdc id = %d iomux error!\n", lcd_id);
  91                 break;
  92         }
  93 }
  94
  95 static int pinctrl_rk3399_spi_config(struct rk3399_grf_regs *grf,
  96                                      struct rk3399_pmugrf_regs *pmugrf,
  97                                      enum periph_id spi_id, int cs)
  98 {
  99         switch (spi_id) {
 100         case PERIPH_ID_SPI0:
 101                 switch (cs) {
 102                 case 0:
 103                         rk_clrsetreg(&grf->gpio3a_iomux,
 104                                      GRF_GPIO3A7_SEL_MASK,
 105                                      GRF_SPI0NORCODEC_CSN0
 106                                      << GRF_GPIO3A7_SEL_SHIFT);
 107                         break;
 108                 case 1:
 109                         rk_clrsetreg(&grf->gpio3b_iomux,
 110                                      GRF_GPIO3B0_SEL_MASK,
 111                                      GRF_SPI0NORCODEC_CSN1
 112                                      << GRF_GPIO3B0_SEL_SHIFT);
 113                         break;
 114                 default:
 115                         goto err;
 116                 }
 117                 rk_clrsetreg(&grf->gpio3a_iomux,
 118                              GRF_GPIO3A4_SEL_MASK | GRF_GPIO3A5_SEL_SHIFT
 119                              | GRF_GPIO3A6_SEL_SHIFT,
 120                              GRF_SPI0NORCODEC_RXD << GRF_GPIO3A4_SEL_SHIFT
 121                              | GRF_SPI0NORCODEC_RXD << GRF_GPIO3A5_SEL_SHIFT
 122                              | GRF_SPI0NORCODEC_RXD << GRF_GPIO3A6_SEL_SHIFT);
 123                 break;
 124         case PERIPH_ID_SPI1:
 125                 if (cs != 0)
 126                         goto err;
 127                 rk_clrsetreg(&pmugrf->gpio1a_iomux,
 128                              PMUGRF_GPIO1A7_SEL_MASK,
 129                              PMUGRF_SPI1EC_RXD << PMUGRF_GPIO1A7_SEL_SHIFT);
 130                 rk_clrsetreg(&pmugrf->gpio1b_iomux,
 131                              PMUGRF_GPIO1B0_SEL_MASK | PMUGRF_GPIO1B1_SEL_MASK
 132                              | PMUGRF_GPIO1B2_SEL_MASK,
 133                              PMUGRF_SPI1EC_TXD << PMUGRF_GPIO1B0_SEL_SHIFT
 134                              | PMUGRF_SPI1EC_CLK << PMUGRF_GPIO1B1_SEL_SHIFT
 135                              | PMUGRF_SPI1EC_CSN0 << PMUGRF_GPIO1B2_SEL_SHIFT);
 136                 break;
 137         case PERIPH_ID_SPI2:
 138                 if (cs != 0)
 139                         goto err;
 140                 rk_clrsetreg(&grf->gpio2b_iomux,
 141                              GRF_GPIO2B1_SEL_MASK | GRF_GPIO2B2_SEL_MASK
 142                              | GRF_GPIO2B3_SEL_MASK | GRF_GPIO2B4_SEL_MASK,
 143                              GRF_SPI2TPM_RXD << GRF_GPIO2B1_SEL_SHIFT
 144                              | GRF_SPI2TPM_TXD << GRF_GPIO2B2_SEL_SHIFT
 145                              | GRF_SPI2TPM_CLK << GRF_GPIO2B3_SEL_SHIFT
 146                              | GRF_SPI2TPM_CSN0 << GRF_GPIO2B4_SEL_SHIFT);
 147                 break;
 148         case PERIPH_ID_SPI5:
 149                 if (cs != 0)
 150                         goto err;
 151                 rk_clrsetreg(&grf->gpio2c_iomux,
 152                              GRF_GPIO2C4_SEL_MASK | GRF_GPIO2C5_SEL_MASK
 153                              | GRF_GPIO2C6_SEL_MASK | GRF_GPIO2C7_SEL_MASK,
 154                              GRF_SPI5EXPPLUS_RXD << GRF_GPIO2C4_SEL_SHIFT
 155                              | GRF_SPI5EXPPLUS_TXD << GRF_GPIO2C5_SEL_SHIFT
 156                              | GRF_SPI5EXPPLUS_CLK << GRF_GPIO2C6_SEL_SHIFT
 157                              | GRF_SPI5EXPPLUS_CSN0 << GRF_GPIO2C7_SEL_SHIFT);
 158                 break;
 159         default:
 160                 printf("%s: spi_id %d is not supported.\n", __func__, spi_id);
 161                 goto err;
 162         }
 163
 164         return 0;
 165 err:
 166         debug("rkspi: periph%d cs=%d not supported", spi_id, cs);
 167         return -ENOENT;
 168 }
 169
 170 static void pinctrl_rk3399_uart_config(struct rk3399_grf_regs *grf,
 171                                        struct rk3399_pmugrf_regs *pmugrf,
 172                                        int uart_id)
 173 {
 174         switch (uart_id) {
 175         case PERIPH_ID_UART2:
 176                 /* Using channel-C by default */
 177                 rk_clrsetreg(&grf->gpio4c_iomux,
 178                              GRF_GPIO4C3_SEL_MASK,
 179                              GRF_UART2DGBC_SIN << GRF_GPIO4C3_SEL_SHIFT);
 180                 rk_clrsetreg(&grf->gpio4c_iomux,
 181                              GRF_GPIO4C4_SEL_MASK,
 182                              GRF_UART2DBGC_SOUT << GRF_GPIO4C4_SEL_SHIFT);
 183                 break;
 184         case PERIPH_ID_UART0:
 185         case PERIPH_ID_UART1:
 186         case PERIPH_ID_UART3:
 187         case PERIPH_ID_UART4:
 188         default:
 189                 debug("uart id = %d iomux error!\n", uart_id);
 190                 break;
 191         }
 192 }
 193
 194 static void pinctrl_rk3399_sdmmc_config(struct rk3399_grf_regs *grf, int mmc_id)
 195 {
 196         switch (mmc_id) {
 197         case PERIPH_ID_EMMC:
 198                 break;
 199         case PERIPH_ID_SDCARD:
 200                 rk_clrsetreg(&grf->gpio4b_iomux,
 201                              GRF_GPIO4B0_SEL_MASK | GRF_GPIO4B1_SEL_MASK
 202                              | GRF_GPIO4B2_SEL_MASK | GRF_GPIO4B3_SEL_MASK
 203                              | GRF_GPIO4B4_SEL_MASK | GRF_GPIO4B5_SEL_MASK,
 204                              GRF_SDMMC_DATA0 << GRF_GPIO4B0_SEL_SHIFT
 205                              | GRF_SDMMC_DATA1 << GRF_GPIO4B1_SEL_SHIFT
 206                              | GRF_SDMMC_DATA2 << GRF_GPIO4B2_SEL_SHIFT
 207                              | GRF_SDMMC_DATA3 << GRF_GPIO4B3_SEL_SHIFT
 208                              | GRF_SDMMC_CLKOUT << GRF_GPIO4B4_SEL_SHIFT
 209                              | GRF_SDMMC_CMD << GRF_GPIO4B5_SEL_SHIFT);
 210                 break;
 211         default:
 212                 debug("mmc id = %d iomux error!\n", mmc_id);
 213                 break;
 214         }
 215 }
 216
 217 #if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
 218 static void pinctrl_rk3399_gmac_config(struct rk3399_grf_regs *grf, int mmc_id)
 219 {
 220         rk_clrsetreg(&grf->gpio3a_iomux,
 221                      GRF_GPIO3A0_SEL_MASK | GRF_GPIO3A1_SEL_MASK |
 222                      GRF_GPIO3A2_SEL_MASK | GRF_GPIO3A3_SEL_MASK |
 223                      GRF_GPIO3A4_SEL_MASK | GRF_GPIO3A5_SEL_MASK |
 224                      GRF_GPIO3A6_SEL_MASK | GRF_GPIO3A7_SEL_MASK,
 225                      GRF_MAC_TXD2 << GRF_GPIO3A0_SEL_SHIFT |
 226                      GRF_MAC_TXD3 << GRF_GPIO3A1_SEL_SHIFT |
 227                      GRF_MAC_RXD2 << GRF_GPIO3A2_SEL_SHIFT |
 228                      GRF_MAC_RXD3 << GRF_GPIO3A3_SEL_SHIFT |
 229                      GRF_MAC_TXD0 << GRF_GPIO3A4_SEL_SHIFT |
 230                      GRF_MAC_TXD1 << GRF_GPIO3A5_SEL_SHIFT |
 231                      GRF_MAC_RXD0 << GRF_GPIO3A6_SEL_SHIFT |
 232                      GRF_MAC_RXD1 << GRF_GPIO3A7_SEL_SHIFT);
 233         rk_clrsetreg(&grf->gpio3b_iomux,
 234                      GRF_GPIO3B0_SEL_MASK | GRF_GPIO3B1_SEL_MASK |
 235                                             GRF_GPIO3B3_SEL_MASK |
 236                      GRF_GPIO3B4_SEL_MASK | GRF_GPIO3B5_SEL_MASK |
 237                      GRF_GPIO3B6_SEL_MASK,
 238                      GRF_MAC_MDC << GRF_GPIO3B0_SEL_SHIFT |
 239                      GRF_MAC_RXDV << GRF_GPIO3B1_SEL_SHIFT |
 240                      GRF_MAC_CLK << GRF_GPIO3B3_SEL_SHIFT |
 241                      GRF_MAC_TXEN << GRF_GPIO3B4_SEL_SHIFT |
 242                      GRF_MAC_MDIO << GRF_GPIO3B5_SEL_SHIFT |
 243                      GRF_MAC_RXCLK << GRF_GPIO3B6_SEL_SHIFT);
 244         rk_clrsetreg(&grf->gpio3c_iomux,
 245                      GRF_GPIO3C1_SEL_MASK,
 246                      GRF_MAC_TXCLK << GRF_GPIO3C1_SEL_SHIFT);
 247
 248         /* Set drive strength for GMAC tx io, value 3 means 13mA */
 249         rk_clrsetreg(&grf->gpio3_e[0],
 250                      GRF_GPIO3A0_E_MASK | GRF_GPIO3A1_E_MASK |
 251                      GRF_GPIO3A4_E_MASK | GRF_GPIO3A5_E0_MASK,
 252                      3 << GRF_GPIO3A0_E_SHIFT |
 253                      3 << GRF_GPIO3A1_E_SHIFT |
 254                      3 << GRF_GPIO3A4_E_SHIFT |
 255                      1 << GRF_GPIO3A5_E0_SHIFT);
 256         rk_clrsetreg(&grf->gpio3_e[1],
 257                      GRF_GPIO3A5_E12_MASK,
 258                      1 << GRF_GPIO3A5_E12_SHIFT);
 259         rk_clrsetreg(&grf->gpio3_e[2],
 260                      GRF_GPIO3B4_E_MASK,
 261                      3 << GRF_GPIO3B4_E_SHIFT);
 262         rk_clrsetreg(&grf->gpio3_e[4],
 263                      GRF_GPIO3C1_E_MASK,
 264                      3 << GRF_GPIO3C1_E_SHIFT);
 265 }
 266 #endif
 267
 268 #if !defined(CONFIG_SPL_BUILD)
 269 static void pinctrl_rk3399_hdmi_config(struct rk3399_grf_regs *grf, int hdmi_id)
 270 {
 271         switch (hdmi_id) {
 272         case PERIPH_ID_HDMI:
 273                 rk_clrsetreg(&grf->gpio4c_iomux,
 274                              GRF_GPIO4C0_SEL_MASK | GRF_GPIO4C1_SEL_MASK,
 275                              (GRF_HDMII2C_SCL << GRF_GPIO4C0_SEL_SHIFT) |
 276                              (GRF_HDMII2C_SDA << GRF_GPIO4C1_SEL_SHIFT));
 277                 break;
 278         default:
 279                 debug("%s: hdmi_id = %d unsupported\n", __func__, hdmi_id);
 280                 break;
 281         }
 282 }
 283 #endif
 284
 285 static int rk3399_pinctrl_request(struct udevice *dev, int func, int flags)
 286 {
 287         struct rk3399_pinctrl_priv *priv = dev_get_priv(dev);
 288
 289         debug("%s: func=%x, flags=%x\n", __func__, func, flags);
 290         switch (func) {
 291         case PERIPH_ID_PWM0:
 292         case PERIPH_ID_PWM1:
 293         case PERIPH_ID_PWM2:
 294         case PERIPH_ID_PWM3:
 295         case PERIPH_ID_PWM4:
 296                 pinctrl_rk3399_pwm_config(priv->grf, priv->pmugrf, func);
 297                 break;
 298         case PERIPH_ID_I2C0:
 299         case PERIPH_ID_I2C1:
 300         case PERIPH_ID_I2C2:
 301         case PERIPH_ID_I2C3:
 302         case PERIPH_ID_I2C4:
 303         case PERIPH_ID_I2C5:
 304                 pinctrl_rk3399_i2c_config(priv->grf, priv->pmugrf, func);
 305                 break;
 306         case PERIPH_ID_SPI0:
 307         case PERIPH_ID_SPI1:
 308         case PERIPH_ID_SPI2:
 309         case PERIPH_ID_SPI3:
 310         case PERIPH_ID_SPI4:
 311         case PERIPH_ID_SPI5:
 312                 pinctrl_rk3399_spi_config(priv->grf, priv->pmugrf, func, flags);
 313                 break;
 314         case PERIPH_ID_UART0:
 315         case PERIPH_ID_UART1:
 316         case PERIPH_ID_UART2:
 317         case PERIPH_ID_UART3:
 318         case PERIPH_ID_UART4:
 319                 pinctrl_rk3399_uart_config(priv->grf, priv->pmugrf, func);
 320                 break;
 321         case PERIPH_ID_LCDC0:
 322         case PERIPH_ID_LCDC1:
 323                 pinctrl_rk3399_lcdc_config(priv->grf, func);
 324                 break;
 325         case PERIPH_ID_SDMMC0:
 326         case PERIPH_ID_SDMMC1:
 327                 pinctrl_rk3399_sdmmc_config(priv->grf, func);
 328                 break;
 329 #if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
 330         case PERIPH_ID_GMAC:
 331                 pinctrl_rk3399_gmac_config(priv->grf, func);
 332                 break;
 333 #endif
 334 #if !defined(CONFIG_SPL_BUILD)
 335         case PERIPH_ID_HDMI:
 336                 pinctrl_rk3399_hdmi_config(priv->grf, func);
 337                 break;
 338 #endif
 339         default:
 340                 return -EINVAL;
 341         }
 342
 343         return 0;
 344 }
 345
 346 static int rk3399_pinctrl_get_periph_id(struct udevice *dev,
 347                                         struct udevice *periph)
 348 {
 349 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
 350         u32 cell[3];
 351         int ret;
 352
 353         ret = dev_read_u32_array(periph, "interrupts", cell, ARRAY_SIZE(cell));
 354         if (ret < 0)
 355                 return -EINVAL;
 356
 357         switch (cell[1]) {
 358         case 68:
 359                 return PERIPH_ID_SPI0;
 360         case 53:
 361                 return PERIPH_ID_SPI1;
 362         case 52:
 363                 return PERIPH_ID_SPI2;
 364         case 132:
 365                 return PERIPH_ID_SPI5;
 366         case 57:
 367                 return PERIPH_ID_I2C0;
 368         case 59: /* Note strange order */
 369                 return PERIPH_ID_I2C1;
 370         case 35:
 371                 return PERIPH_ID_I2C2;
 372         case 34:
 373                 return PERIPH_ID_I2C3;
 374         case 56:
 375                 return PERIPH_ID_I2C4;
 376         case 38:
 377                 return PERIPH_ID_I2C5;
 378         case 65:
 379                 return PERIPH_ID_SDMMC1;
 380 #if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
 381         case 12:
 382                 return PERIPH_ID_GMAC;
 383 #endif
 384 #if !defined(CONFIG_SPL_BUILD)
 385         case 23:
 386                 return PERIPH_ID_HDMI;
 387 #endif
 388         }
 389 #endif
 390         return -ENOENT;
 391 }
 392
 393 static int rk3399_pinctrl_set_state_simple(struct udevice *dev,
 394                                            struct udevice *periph)
 395 {
 396         int func;
 397
 398         func = rk3399_pinctrl_get_periph_id(dev, periph);
 399         if (func < 0)
 400                 return func;
 401
 402         return rk3399_pinctrl_request(dev, func, 0);
 403 }
 404
 405 static struct pinctrl_ops rk3399_pinctrl_ops = {
 406         .set_state_simple       = rk3399_pinctrl_set_state_simple,
 407         .request        = rk3399_pinctrl_request,
 408         .get_periph_id  = rk3399_pinctrl_get_periph_id,
 409 };
 410
 411 static int rk3399_pinctrl_probe(struct udevice *dev)
 412 {
 413         struct rk3399_pinctrl_priv *priv = dev_get_priv(dev);
 414         int ret = 0;
 415
 416         priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
 417         priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
 418         debug("%s: grf=%p, pmugrf=%p\n", __func__, priv->grf, priv->pmugrf);
 419
 420         return ret;
 421 }
 422
 423 static const struct udevice_id rk3399_pinctrl_ids[] = {
 424         { .compatible = "rockchip,rk3399-pinctrl" },
 425         { }
 426 };
 427
 428 U_BOOT_DRIVER(pinctrl_rk3399) = {
 429         .name           = "rockchip_rk3399_pinctrl",
 430         .id             = UCLASS_PINCTRL,
 431         .of_match       = rk3399_pinctrl_ids,
 432         .priv_auto_alloc_size = sizeof(struct rk3399_pinctrl_priv),
 433         .ops            = &rk3399_pinctrl_ops,
 434 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
 435         .bind           = dm_scan_fdt_dev,
 436 #endif
 437         .probe          = rk3399_pinctrl_probe,
 438 };