/* SPDX-License-Identifier: GPL-2.0+ */
/*
 *  Internal header file for Samsung S3C2410 serial ports (UART0-2)
 *
 *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
 *
 *  Additional defines, Copyright 2003 Simtec Electronics (linux@simtec.co.uk)
 *
 *  Adapted from:
 *
 *  Internal header file for MX1ADS serial ports (UART1 & 2)
 *
 *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
 */

#ifndef __ASM_ARM_REGS_SERIAL_H
#define __ASM_ARM_REGS_SERIAL_H

#define S3C2410_URXH      (0x24)
#define S3C2410_UTXH      (0x20)
#define S3C2410_ULCON     (0x00)
#define S3C2410_UCON      (0x04)
#define S3C2410_UFCON     (0x08)
#define S3C2410_UMCON     (0x0C)
#define S3C2410_UBRDIV    (0x28)
#define S3C2410_UTRSTAT   (0x10)
#define S3C2410_UERSTAT   (0x14)
#define S3C2410_UFSTAT    (0x18)
#define S3C2410_UMSTAT    (0x1C)
#define USI_CON           (0xC4)
#define USI_OPTION        (0xC8)

#define USI_CON_RESET                   (1<<0)
#define USI_CON_RESET_MASK              (1<<0)

#define USI_OPTION_HWACG_CLKREQ_ON      (1<<1)
#define USI_OPTION_HWACG_CLKSTOP_ON     (1<<2)
#define USI_OPTION_HWACG_MASK           (3<<1)

#define S3C2410_LCON_CFGMASK      ((0xF<<3)|(0x3))

#define S3C2410_LCON_CS5          (0x0)
#define S3C2410_LCON_CS6          (0x1)
#define S3C2410_LCON_CS7          (0x2)
#define S3C2410_LCON_CS8          (0x3)
#define S3C2410_LCON_CSMASK       (0x3)

#define S3C2410_LCON_PNONE        (0x0)
#define S3C2410_LCON_PEVEN        (0x5 << 3)
#define S3C2410_LCON_PODD         (0x4 << 3)
#define S3C2410_LCON_PMASK        (0x7 << 3)

#define S3C2410_LCON_STOPB        (1<<2)
#define S3C2410_LCON_IRM          (1<<6)

#define S3C2440_UCON_CLKMASK      (3<<10)
#define S3C2440_UCON_CLKSHIFT     (10)
#define S3C2440_UCON_PCLK         (0<<10)
#define S3C2440_UCON_UCLK         (1<<10)
#define S3C2440_UCON_PCLK2        (2<<10)
#define S3C2440_UCON_FCLK         (3<<10)
#define S3C2443_UCON_EPLL         (3<<10)

#define S3C6400_UCON_CLKMASK    (3<<10)
#define S3C6400_UCON_CLKSHIFT   (10)
#define S3C6400_UCON_PCLK       (0<<10)
#define S3C6400_UCON_PCLK2      (2<<10)
#define S3C6400_UCON_UCLK0      (1<<10)
#define S3C6400_UCON_UCLK1      (3<<10)

#define S3C2440_UCON2_FCLK_EN     (1<<15)
#define S3C2440_UCON0_DIVMASK     (15 << 12)
#define S3C2440_UCON1_DIVMASK     (15 << 12)
#define S3C2440_UCON2_DIVMASK     (7 << 12)
#define S3C2440_UCON_DIVSHIFT     (12)

#define S3C2412_UCON_CLKMASK    (3<<10)
#define S3C2412_UCON_CLKSHIFT   (10)
#define S3C2412_UCON_UCLK       (1<<10)
#define S3C2412_UCON_USYSCLK    (3<<10)
#define S3C2412_UCON_PCLK       (0<<10)
#define S3C2412_UCON_PCLK2      (2<<10)

#define S3C2410_UCON_CLKMASK    (1 << 10)
#define S3C2410_UCON_CLKSHIFT   (10)
#define S3C2410_UCON_UCLK         (1<<10)
#define S3C2410_UCON_SBREAK       (1<<4)

#define S3C2410_UCON_TXILEVEL     (1<<9)
#define S3C2410_UCON_RXILEVEL     (1<<8)
#define S3C2410_UCON_TXIRQMODE    (1<<2)
#define S3C2410_UCON_RXIRQMODE    (1<<0)
#define S3C2410_UCON_RXFIFO_TOI   (1<<7)
#define S3C2443_UCON_RXERR_IRQEN  (1<<6)
#define S3C2443_UCON_LOOPBACK     (1<<5)

#define S3C2410_UCON_DEFAULT      (S3C2410_UCON_TXILEVEL  | \
                                   S3C2410_UCON_RXILEVEL  | \
                                   S3C2410_UCON_TXIRQMODE | \
                                   S3C2410_UCON_RXIRQMODE | \
                                   S3C2410_UCON_RXFIFO_TOI)

#define S3C64XX_UCON_TXBURST_1          (0<<20)
#define S3C64XX_UCON_TXBURST_4          (1<<20)
#define S3C64XX_UCON_TXBURST_8          (2<<20)
#define S3C64XX_UCON_TXBURST_16         (3<<20)
#define S3C64XX_UCON_TXBURST_MASK       (0xf<<20)
#define S3C64XX_UCON_RXBURST_1          (0<<16)
#define S3C64XX_UCON_RXBURST_4          (1<<16)
#define S3C64XX_UCON_RXBURST_8          (2<<16)
#define S3C64XX_UCON_RXBURST_16         (3<<16)
#define S3C64XX_UCON_RXBURST_MASK       (0xf<<16)
#define S3C64XX_UCON_TIMEOUT_SHIFT      (12)
#define S3C64XX_UCON_TIMEOUT_MASK       (0xf<<12)
#define S3C64XX_UCON_EMPTYINT_EN        (1<<11)
#define S3C64XX_UCON_DMASUS_EN          (1<<10)
#define S3C64XX_UCON_TXINT_LEVEL        (1<<9)
#define S3C64XX_UCON_RXINT_LEVEL        (1<<8)
#define S3C64XX_UCON_TIMEOUT_EN         (1<<7)
#define S3C64XX_UCON_ERRINT_EN          (1<<6)
#define S3C64XX_UCON_TXMODE_DMA         (2<<2)
#define S3C64XX_UCON_TXMODE_CPU         (1<<2)
#define S3C64XX_UCON_TXMODE_MASK        (3<<2)
#define S3C64XX_UCON_RXMODE_DMA         (2<<0)
#define S3C64XX_UCON_RXMODE_CPU         (1<<0)
#define S3C64XX_UCON_RXMODE_MASK        (3<<0)

#define S3C2410_UFCON_FIFOMODE    (1<<0)
#define S3C2410_UFCON_TXTRIG0     (0<<6)
#define S3C2410_UFCON_RXTRIG8     (1<<4)
#define S3C2410_UFCON_RXTRIG12    (2<<4)

/* S3C2440 FIFO trigger levels */
#define S3C2440_UFCON_RXTRIG1     (0<<4)
#define S3C2440_UFCON_RXTRIG8     (1<<4)
#define S3C2440_UFCON_RXTRIG16    (2<<4)
#define S3C2440_UFCON_RXTRIG32    (3<<4)

#define S3C2440_UFCON_TXTRIG0     (0<<6)
#define S3C2440_UFCON_TXTRIG16    (1<<6)
#define S3C2440_UFCON_TXTRIG32    (2<<6)
#define S3C2440_UFCON_TXTRIG48    (3<<6)

#define S3C2410_UFCON_RESETBOTH   (3<<1)
#define S3C2410_UFCON_RESETTX     (1<<2)
#define S3C2410_UFCON_RESETRX     (1<<1)

#define S3C2410_UFCON_DEFAULT     (S3C2410_UFCON_FIFOMODE | \
                                   S3C2410_UFCON_TXTRIG0  | \
                                   S3C2410_UFCON_RXTRIG8 )

#define S3C2410_UMCOM_AFC         (1<<4)
#define S3C2410_UMCOM_RTS_LOW     (1<<0)

#define S3C2412_UMCON_AFC_63    (0<<5)          /* same as s3c2443 */
#define S3C2412_UMCON_AFC_56    (1<<5)
#define S3C2412_UMCON_AFC_48    (2<<5)
#define S3C2412_UMCON_AFC_40    (3<<5)
#define S3C2412_UMCON_AFC_32    (4<<5)
#define S3C2412_UMCON_AFC_24    (5<<5)
#define S3C2412_UMCON_AFC_16    (6<<5)
#define S3C2412_UMCON_AFC_8     (7<<5)

#define S3C2410_UFSTAT_TXFULL     (1<<9)
#define S3C2410_UFSTAT_RXFULL     (1<<8)
#define S3C2410_UFSTAT_TXMASK     (15<<4)
#define S3C2410_UFSTAT_TXSHIFT    (4)
#define S3C2410_UFSTAT_RXMASK     (15<<0)
#define S3C2410_UFSTAT_RXSHIFT    (0)

/* UFSTAT S3C2443 same as S3C2440 */
#define S3C2440_UFSTAT_TXFULL     (1<<14)
#define S3C2440_UFSTAT_RXFULL     (1<<6)
#define S3C2440_UFSTAT_TXSHIFT    (8)
#define S3C2440_UFSTAT_RXSHIFT    (0)
#define S3C2440_UFSTAT_TXMASK     (63<<8)
#define S3C2440_UFSTAT_RXMASK     (63)

#define S3C2410_UTRSTAT_TIMEOUT   (1<<3)
#define S3C2410_UTRSTAT_TXE       (1<<2)
#define S3C2410_UTRSTAT_TXFE      (1<<1)
#define S3C2410_UTRSTAT_RXDR      (1<<0)

#define S3C2410_UERSTAT_OVERRUN   (1<<0)
#define S3C2410_UERSTAT_FRAME     (1<<2)
#define S3C2410_UERSTAT_BREAK     (1<<3)
#define S3C2443_UERSTAT_PARITY    (1<<1)

#define S3C2410_UERSTAT_ANY       (S3C2410_UERSTAT_OVERRUN | \
                                   S3C2410_UERSTAT_FRAME | \
                                   S3C2410_UERSTAT_BREAK)

#define S3C2410_UMSTAT_CTS        (1<<0)
#define S3C2410_UMSTAT_DeltaCTS   (1<<2)

#define S3C2443_DIVSLOT           (0x2C)

/* S3C64XX interrupt registers. */
#define S3C64XX_UINTP           0x30
#define S3C64XX_UINTSP          0x34
#define S3C64XX_UINTM           0x38

#define S3C64XX_UINTM_RXD       (0)
#define S3C64XX_UINTM_ERROR     (1)
#define S3C64XX_UINTM_TXD       (2)
#define S3C64XX_UINTM_RXD_MSK   (1 << S3C64XX_UINTM_RXD)
#define S3C64XX_UINTM_ERR_MSK   (1 << S3C64XX_UINTM_ERROR)
#define S3C64XX_UINTM_TXD_MSK   (1 << S3C64XX_UINTM_TXD)

/* Following are specific to S5PV210 */
#define S5PV210_UCON_CLKMASK    (1<<10)
#define S5PV210_UCON_CLKSHIFT   (10)
#define S5PV210_UCON_PCLK       (0<<10)
#define S5PV210_UCON_UCLK       (1<<10)

#define S5PV210_UFCON_TXTRIG0   (0<<8)
#define S5PV210_UFCON_TXTRIG4   (1<<8)
#define S5PV210_UFCON_TXTRIG8   (2<<8)
#define S5PV210_UFCON_TXTRIG16  (3<<8)
#define S5PV210_UFCON_TXTRIG32  (4<<8)
#define S5PV210_UFCON_TXTRIG64  (5<<8)
#define S5PV210_UFCON_TXTRIG128 (6<<8)
#define S5PV210_UFCON_TXTRIG256 (7<<8)

#define S5PV210_UFCON_RXTRIG1   (0<<4)
#define S5PV210_UFCON_RXTRIG4   (1<<4)
#define S5PV210_UFCON_RXTRIG8   (2<<4)
#define S5PV210_UFCON_RXTRIG16  (3<<4)
#define S5PV210_UFCON_RXTRIG32  (4<<4)
#define S5PV210_UFCON_RXTRIG64  (5<<4)
#define S5PV210_UFCON_RXTRIG128 (6<<4)
#define S5PV210_UFCON_RXTRIG256 (7<<4)

#define S5PV210_UFSTAT_TXFULL   (1<<24)
#define S5PV210_UFSTAT_RXFULL   (1<<8)
#define S5PV210_UFSTAT_TXMASK   (255<<16)
#define S5PV210_UFSTAT_TXSHIFT  (16)
#define S5PV210_UFSTAT_RXMASK   (255<<0)
#define S5PV210_UFSTAT_RXSHIFT  (0)

#define S3C2410_UCON_CLKSEL0    (1 << 0)
#define S3C2410_UCON_CLKSEL1    (1 << 1)
#define S3C2410_UCON_CLKSEL2    (1 << 2)
#define S3C2410_UCON_CLKSEL3    (1 << 3)

/* Default values for s5pv210 UCON and UFCON uart registers */
#define S5PV210_UCON_DEFAULT    (S3C2410_UCON_TXILEVEL |        \
                                 S3C2410_UCON_RXILEVEL |        \
                                 S3C2410_UCON_TXIRQMODE |       \
                                 S3C2410_UCON_RXIRQMODE |       \
                                 S3C2410_UCON_RXFIFO_TOI |      \
                                 S3C2443_UCON_RXERR_IRQEN)

#define S5PV210_UFCON_DEFAULT   (S3C2410_UFCON_FIFOMODE |       \
                                 S5PV210_UFCON_TXTRIG4 |        \
                                 S5PV210_UFCON_RXTRIG4)

#define APPLE_S5L_UCON_RXTO_ENA         9
#define APPLE_S5L_UCON_RXTHRESH_ENA     12
#define APPLE_S5L_UCON_TXTHRESH_ENA     13
#define APPLE_S5L_UCON_RXTO_ENA_MSK     (1 << APPLE_S5L_UCON_RXTO_ENA)
#define APPLE_S5L_UCON_RXTHRESH_ENA_MSK (1 << APPLE_S5L_UCON_RXTHRESH_ENA)
#define APPLE_S5L_UCON_TXTHRESH_ENA_MSK (1 << APPLE_S5L_UCON_TXTHRESH_ENA)

#define APPLE_S5L_UCON_DEFAULT          (S3C2410_UCON_TXIRQMODE | \
                                         S3C2410_UCON_RXIRQMODE | \
                                         S3C2410_UCON_RXFIFO_TOI)

#define APPLE_S5L_UTRSTAT_RXTHRESH      (1<<4)
#define APPLE_S5L_UTRSTAT_TXTHRESH      (1<<5)
#define APPLE_S5L_UTRSTAT_RXTO          (1<<9)
#define APPLE_S5L_UTRSTAT_ALL_FLAGS     (0x3f0)

#ifndef __ASSEMBLY__

#include <linux/serial_core.h>

/* configuration structure for per-machine configurations for the
 * serial port
 *
 * the pointer is setup by the machine specific initialisation from the
 * arch/arm/mach-s3c/ directory.
*/

struct s3c2410_uartcfg {
        unsigned char      hwport;       /* hardware port number */
        unsigned char      unused;
        unsigned short     flags;
        upf_t              uart_flags;   /* default uart flags */
        unsigned int       clk_sel;

        unsigned int       has_fracval;

        unsigned long      ucon;         /* value of ucon for port */
        unsigned long      ulcon;        /* value of ulcon for port */
        unsigned long      ufcon;        /* value of ufcon for port */
};

#endif /* __ASSEMBLY__ */

#endif /* __ASM_ARM_REGS_SERIAL_H */