drivers/serial/serial_rockchip.c

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