arch/arm/mach-s5p64x0/init.c

   1 /* linux/arch/arm/mach-s5p64x0/init.c
   2  *
   3  * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com
   5  *
   6  * S5P64X0 - Init support
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/types.h>
  15 #include <linux/init.h>
  16 #include <linux/serial_core.h>
  17
  18 #include <mach/map.h>
  19
  20 #include <plat/cpu.h>
  21 #include <plat/devs.h>
  22 #include <plat/s5p6440.h>
  23 #include <plat/s5p6450.h>
  24 #include <plat/regs-serial.h>
  25
  26 static struct s3c24xx_uart_clksrc s5p64x0_serial_clocks[] = {
  27         [0] = {
  28                 .name           = "pclk_low",
  29                 .divisor        = 1,
  30                 .min_baud       = 0,
  31                 .max_baud       = 0,
  32         },
  33         [1] = {
  34                 .name           = "uclk1",
  35                 .divisor        = 1,
  36                 .min_baud       = 0,
  37                 .max_baud       = 0,
  38         },
  39 };
  40
  41 /* uart registration process */
  42
  43 void __init s5p64x0_common_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  44 {
  45         struct s3c2410_uartcfg *tcfg = cfg;
  46         u32 ucnt;
  47
  48         for (ucnt = 0; ucnt < no; ucnt++, tcfg++) {
  49                 if (!tcfg->clocks) {
  50                         tcfg->clocks = s5p64x0_serial_clocks;
  51                         tcfg->clocks_size = ARRAY_SIZE(s5p64x0_serial_clocks);
  52                 }
  53         }
  54 }
  55
  56 void __init s5p6440_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  57 {
  58         int uart;
  59
  60         for (uart = 0; uart < no; uart++) {
  61                 s5p_uart_resources[uart].resources->start = S5P6440_PA_UART(uart);
  62                 s5p_uart_resources[uart].resources->end = S5P6440_PA_UART(uart) + S5P_SZ_UART;
  63         }
  64
  65         s5p64x0_common_init_uarts(cfg, no);
  66         s3c24xx_init_uartdevs("s3c6400-uart", s5p_uart_resources, cfg, no);
  67 }
  68
  69 void __init s5p6450_init_uarts(struct s3c2410_uartcfg *cfg, int no)
  70 {
  71         s5p64x0_common_init_uarts(cfg, no);
  72         s3c24xx_init_uartdevs("s3c6400-uart", s5p_uart_resources, cfg, no);
  73 }