drivers/tty/serial/samsung.h

   1 #ifndef __SAMSUNG_H
   2 #define __SAMSUNG_H
   3
   4 /*
   5  * Driver for Samsung SoC onboard UARTs.
   6  *
   7  * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
   8  *      http://armlinux.simtec.co.uk/
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13 */
  14
  15 struct s3c24xx_uart_info {
  16         char                    *name;
  17         unsigned int            type;
  18         unsigned int            fifosize;
  19         unsigned long           rx_fifomask;
  20         unsigned long           rx_fifoshift;
  21         unsigned long           rx_fifofull;
  22         unsigned long           tx_fifomask;
  23         unsigned long           tx_fifoshift;
  24         unsigned long           tx_fifofull;
  25         unsigned int            def_clk_sel;
  26         unsigned long           num_clks;
  27         unsigned long           clksel_mask;
  28         unsigned long           clksel_shift;
  29
  30         /* uart port features */
  31
  32         unsigned int            has_divslot:1;
  33
  34         /* uart controls */
  35         int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *);
  36 };
  37
  38 struct s3c24xx_serial_drv_data {
  39         struct s3c24xx_uart_info        *info;
  40         struct s3c2410_uartcfg          *def_cfg;
  41         unsigned int                    fifosize[CONFIG_SERIAL_SAMSUNG_UARTS];
  42 };
  43
  44 struct s3c24xx_uart_port {
  45         unsigned char                   rx_claimed;
  46         unsigned char                   tx_claimed;
  47         unsigned int                    pm_level;
  48         unsigned long                   baudclk_rate;
  49
  50         unsigned int                    rx_irq;
  51         unsigned int                    tx_irq;
  52
  53         struct s3c24xx_uart_info        *info;
  54         struct clk                      *clk;
  55         struct clk                      *baudclk;
  56         struct uart_port                port;
  57         struct s3c24xx_serial_drv_data  *drv_data;
  58
  59         /* reference to platform data */
  60         struct s3c2410_uartcfg          *cfg;
  61
  62 #ifdef CONFIG_CPU_FREQ
  63         struct notifier_block           freq_transition;
  64 #endif
  65 };
  66
  67 /* conversion functions */
  68
  69 #define s3c24xx_dev_to_port(__dev) dev_get_drvdata(__dev)
  70
  71 /* register access controls */
  72
  73 #define portaddr(port, reg) ((port)->membase + (reg))
  74 #define portaddrl(port, reg) \
  75         ((unsigned long *)(unsigned long)((port)->membase + (reg)))
  76
  77 #define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
  78 #define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))
  79
  80 #define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
  81 #define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))
  82
  83 #endif