drivers/serial/serial_rockchip.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2015 Google, Inc
   4  */
   5
   6 #include <debug_uart.h>
   7 #include <dm.h>
   8 #include <dt-structs.h>
   9 #include <ns16550.h>
  10 #include <serial.h>
  11 #include <asm/arch-rockchip/clock.h>
  12 #include <dm/device-internal.h>
  13
  14 struct rockchip_uart_plat {
  15 #if CONFIG_IS_ENABLED(OF_PLATDATA)
  16         struct dtd_rockchip_uart dtplat;
  17 #endif
  18         struct ns16550_plat plat;
  19 };
  20
  21 #if CONFIG_IS_ENABLED(OF_PLATDATA)
  22 struct dtd_rockchip_uart *dtplat, s_dtplat;
  23 #endif
  24
  25 static int rockchip_serial_probe(struct udevice *dev)
  26 {
  27 #if CONFIG_IS_ENABLED(OF_PLATDATA)
  28         struct rockchip_uart_plat *plat = dev_get_plat(dev);
  29
  30         /* Create some new platform data for the standard driver */
  31         plat->plat.base = plat->dtplat.reg[0];
  32         plat->plat.reg_shift = plat->dtplat.reg_shift;
  33         plat->plat.clock = plat->dtplat.clock_frequency;
  34         plat->plat.fcr = UART_FCR_DEFVAL;
  35         dev_set_plat(dev, &plat->plat);
  36
  37         return ns16550_serial_probe(dev);
  38 #else
  39         return -ENODEV;
  40 #endif
  41 }
  42
  43 U_BOOT_DRIVER(rockchip_uart) = {
  44         .name           = "rockchip_uart",
  45         .id             = UCLASS_SERIAL,
  46         .priv_auto      = sizeof(struct ns16550),
  47         .plat_auto      = sizeof(struct rockchip_uart_plat),
  48         .probe          = rockchip_serial_probe,
  49         .ops            = &ns16550_serial_ops,
  50         .flags          = DM_FLAG_PRE_RELOC,
  51 };
  52 DM_DRIVER_ALIAS(rockchip_uart, rockchip_rk3066_uart)
  53 DM_DRIVER_ALIAS(rockchip_uart, rockchip_rk3188_uart)
  54 DM_DRIVER_ALIAS(rockchip_uart, rockchip_rk3288_uart)
  55 DM_DRIVER_ALIAS(rockchip_uart, rockchip_rk3328_uart)
  56 DM_DRIVER_ALIAS(rockchip_uart, rockchip_rk3368_uart)