/* SPDX-License-Identifier: GPL-2.0 */
/*
 * arch/arm/mach-sa1100/include/mach/assabet.h
 *
 * Created 2000/06/05 by Nicolas Pitre <nico@fluxnic.net>
 *
 * This file contains the hardware specific definitions for Assabet
 * Only include this file from SA1100-specific files.
 *
 * 2000/05/23 John Dorsey <john+@cs.cmu.edu>
 *      Definitions for Neponset added.
 */
#ifndef __ASM_ARCH_ASSABET_H
#define __ASM_ARCH_ASSABET_H


/* System Configuration Register flags */

#define ASSABET_SCR_SDRAM_LOW   (1<<2)  /* SDRAM size (low bit) */
#define ASSABET_SCR_SDRAM_HIGH  (1<<3)  /* SDRAM size (high bit) */
#define ASSABET_SCR_FLASH_LOW   (1<<4)  /* Flash size (low bit) */
#define ASSABET_SCR_FLASH_HIGH  (1<<5)  /* Flash size (high bit) */
#define ASSABET_SCR_GFX         (1<<8)  /* Graphics Accelerator (0 = present) */
#define ASSABET_SCR_SA1111      (1<<9)  /* Neponset (0 = present) */

#define ASSABET_SCR_INIT        -1

extern unsigned long SCR_value;

#ifdef CONFIG_ASSABET_NEPONSET
#define machine_has_neponset()  ((SCR_value & ASSABET_SCR_SA1111) == 0)
#else
#define machine_has_neponset()  (0)
#endif

/* Board Control Register */

#define ASSABET_BCR_BASE  0xf1000000
#define ASSABET_BCR (*(volatile unsigned int *)(ASSABET_BCR_BASE))

#define ASSABET_BCR_CF_PWR      (1<<0)  /* Compact Flash Power (1 = 3.3v, 0 = off) */
#define ASSABET_BCR_CF_RST      (1<<1)  /* Compact Flash Reset (1 = power up reset) */
#define ASSABET_BCR_NGFX_RST    (1<<1)  /* Graphics Accelerator Reset (0 = hold reset) */
#define ASSABET_BCR_NCODEC_RST  (1<<2)  /* 0 = Holds UCB1300, ADI7171, and UDA1341 in reset */
#define ASSABET_BCR_IRDA_FSEL   (1<<3)  /* IRDA Frequency select (0 = SIR, 1 = MIR/ FIR) */
#define ASSABET_BCR_IRDA_MD0    (1<<4)  /* Range/Power select */
#define ASSABET_BCR_IRDA_MD1    (1<<5)  /* Range/Power select */
#define ASSABET_BCR_STEREO_LB   (1<<6)  /* Stereo Loopback */
#define ASSABET_BCR_CF_BUS_OFF  (1<<7)  /* Compact Flash bus (0 = on, 1 = off (float)) */
#define ASSABET_BCR_AUDIO_ON    (1<<8)  /* Audio power on */
#define ASSABET_BCR_LIGHT_ON    (1<<9)  /* Backlight */
#define ASSABET_BCR_LCD_12RGB   (1<<10) /* 0 = 16RGB, 1 = 12RGB */
#define ASSABET_BCR_LCD_ON      (1<<11) /* LCD power on */
#define ASSABET_BCR_RS232EN     (1<<12) /* RS232 transceiver enable */
#define ASSABET_BCR_LED_RED     (1<<13) /* D9 (0 = on, 1 = off) */
#define ASSABET_BCR_LED_GREEN   (1<<14) /* D8 (0 = on, 1 = off) */
#define ASSABET_BCR_VIB_ON      (1<<15) /* Vibration motor (quiet alert) */
#define ASSABET_BCR_COM_DTR     (1<<16) /* COMport Data Terminal Ready */
#define ASSABET_BCR_COM_RTS     (1<<17) /* COMport Request To Send */
#define ASSABET_BCR_RAD_WU      (1<<18) /* Radio wake up interrupt */
#define ASSABET_BCR_SMB_EN      (1<<19) /* System management bus enable */
#define ASSABET_BCR_TV_IR_DEC   (1<<20) /* TV IR Decode Enable (not implemented) */
#define ASSABET_BCR_QMUTE       (1<<21) /* Quick Mute */
#define ASSABET_BCR_RAD_ON      (1<<22) /* Radio Power On */
#define ASSABET_BCR_SPK_OFF     (1<<23) /* 1 = Speaker amplifier power off */

#ifdef CONFIG_SA1100_ASSABET
extern void ASSABET_BCR_frob(unsigned int mask, unsigned int set);
#else
#define ASSABET_BCR_frob(x,y)   do { } while (0)
#endif

extern void assabet_uda1341_reset(int set);

#define ASSABET_BCR_set(x)      ASSABET_BCR_frob((x), (x))
#define ASSABET_BCR_clear(x)    ASSABET_BCR_frob((x), 0)

#define ASSABET_BSR_BASE        0xf1000000
#define ASSABET_BSR (*(volatile unsigned int*)(ASSABET_BSR_BASE))

#define ASSABET_BSR_RS232_VALID (1 << 24)
#define ASSABET_BSR_COM_DCD     (1 << 25)
#define ASSABET_BSR_COM_CTS     (1 << 26)
#define ASSABET_BSR_COM_DSR     (1 << 27)
#define ASSABET_BSR_RAD_CTS     (1 << 28)
#define ASSABET_BSR_RAD_DSR     (1 << 29)
#define ASSABET_BSR_RAD_DCD     (1 << 30)
#define ASSABET_BSR_RAD_RI      (1 << 31)


/* GPIOs (bitmasks) for which the generic definition doesn't say much */
#define ASSABET_GPIO_RADIO_IRQ          GPIO_GPIO (14)  /* Radio interrupt request  */
#define ASSABET_GPIO_PS_MODE_SYNC       GPIO_GPIO (16)  /* Power supply mode/sync   */
#define ASSABET_GPIO_STEREO_64FS_CLK    GPIO_GPIO (19)  /* SSP UDA1341 clock input  */
#define ASSABET_GPIO_GFX_IRQ            GPIO_GPIO (24)  /* Graphics IRQ */
#define ASSABET_GPIO_BATT_LOW           GPIO_GPIO (26)  /* Low battery */
#define ASSABET_GPIO_RCLK               GPIO_GPIO (26)  /* CCLK/2  */

#endif