/*
 * arch/arm/include/asm/hardware/locomo.h
 *
 * This file contains the definitions for the LoCoMo G/A Chip
 *
 * (C) Copyright 2004 John Lenz
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * Based on sa1111.h
 */
#ifndef _ASM_ARCH_LOCOMO
#define _ASM_ARCH_LOCOMO

#define locomo_writel(val,addr) ({ *(volatile u16 *)(addr) = (val); })
#define locomo_readl(addr)      (*(volatile u16 *)(addr))

/* LOCOMO version */
#define LOCOMO_VER      0x00

/* Pin status */
#define LOCOMO_ST       0x04

/* Pin status */
#define LOCOMO_C32K     0x08

/* Interrupt controller */
#define LOCOMO_ICR      0x0C

/* MCS decoder for boot selecting */
#define LOCOMO_MCSX0    0x10
#define LOCOMO_MCSX1    0x14
#define LOCOMO_MCSX2    0x18
#define LOCOMO_MCSX3    0x1c

/* Touch panel controller */
#define LOCOMO_ASD      0x20            /* AD start delay */
#define LOCOMO_HSD      0x28            /* HSYS delay */
#define LOCOMO_HSC      0x2c            /* HSYS period */
#define LOCOMO_TADC     0x30            /* tablet ADC clock */


/* Long time timer */
#define LOCOMO_LTC      0xd8            /* LTC interrupt setting */
#define LOCOMO_LTINT    0xdc            /* LTC interrupt */

/* DAC control signal for LCD (COMADJ ) */
#define LOCOMO_DAC              0xe0
/* DAC control */
#define LOCOMO_DAC_SCLOEB       0x08    /* SCL pin output data       */
#define LOCOMO_DAC_TEST         0x04    /* Test bit                  */
#define LOCOMO_DAC_SDA          0x02    /* SDA pin level (read-only) */
#define LOCOMO_DAC_SDAOEB       0x01    /* SDA pin output data       */

/* SPI interface */
#define LOCOMO_SPI      0x60
#define LOCOMO_SPIMD    0x00            /* SPI mode setting */
#define LOCOMO_SPICT    0x04            /* SPI mode control */
#define LOCOMO_SPIST    0x08            /* SPI status */
#define LOCOMO_SPI_TEND (1 << 3)        /* Transfer end bit */
#define LOCOMO_SPI_REND (1 << 2)        /* Receive end bit */
#define LOCOMO_SPI_RFW  (1 << 1)        /* write buffer bit */
#define LOCOMO_SPI_RFR  (1)             /* read buffer bit */

#define LOCOMO_SPIIS    0x10            /* SPI interrupt status */
#define LOCOMO_SPIWE    0x14            /* SPI interrupt status write enable */
#define LOCOMO_SPIIE    0x18            /* SPI interrupt enable */
#define LOCOMO_SPIIR    0x1c            /* SPI interrupt request */
#define LOCOMO_SPITD    0x20            /* SPI transfer data write */
#define LOCOMO_SPIRD    0x24            /* SPI receive data read */
#define LOCOMO_SPITS    0x28            /* SPI transfer data shift */
#define LOCOMO_SPIRS    0x2C            /* SPI receive data shift */

/* GPIO */
#define LOCOMO_GPD              0x90    /* GPIO direction */
#define LOCOMO_GPE              0x94    /* GPIO input enable */
#define LOCOMO_GPL              0x98    /* GPIO level */
#define LOCOMO_GPO              0x9c    /* GPIO out data setting */
#define LOCOMO_GRIE             0xa0    /* GPIO rise detection */
#define LOCOMO_GFIE             0xa4    /* GPIO fall detection */
#define LOCOMO_GIS              0xa8    /* GPIO edge detection status */
#define LOCOMO_GWE              0xac    /* GPIO status write enable */
#define LOCOMO_GIE              0xb0    /* GPIO interrupt enable */
#define LOCOMO_GIR              0xb4    /* GPIO interrupt request */
#define LOCOMO_GPIO(Nb)         (0x01 << (Nb))
#define LOCOMO_GPIO_RTS         LOCOMO_GPIO(0)
#define LOCOMO_GPIO_CTS         LOCOMO_GPIO(1)
#define LOCOMO_GPIO_DSR         LOCOMO_GPIO(2)
#define LOCOMO_GPIO_DTR         LOCOMO_GPIO(3)
#define LOCOMO_GPIO_LCD_VSHA_ON LOCOMO_GPIO(4)
#define LOCOMO_GPIO_LCD_VSHD_ON LOCOMO_GPIO(5)
#define LOCOMO_GPIO_LCD_VEE_ON  LOCOMO_GPIO(6)
#define LOCOMO_GPIO_LCD_MOD     LOCOMO_GPIO(7)
#define LOCOMO_GPIO_DAC_ON      LOCOMO_GPIO(8)
#define LOCOMO_GPIO_FL_VR       LOCOMO_GPIO(9)
#define LOCOMO_GPIO_DAC_SDATA   LOCOMO_GPIO(10)
#define LOCOMO_GPIO_DAC_SCK     LOCOMO_GPIO(11)
#define LOCOMO_GPIO_DAC_SLOAD   LOCOMO_GPIO(12)
#define LOCOMO_GPIO_CARD_DETECT LOCOMO_GPIO(13)
#define LOCOMO_GPIO_WRITE_PROT  LOCOMO_GPIO(14)
#define LOCOMO_GPIO_CARD_POWER  LOCOMO_GPIO(15)

/* Start the definitions of the devices.  Each device has an initial
 * base address and a series of offsets from that base address. */

/* Keyboard controller */
#define LOCOMO_KEYBOARD         0x40
#define LOCOMO_KIB              0x00    /* KIB level */
#define LOCOMO_KSC              0x04    /* KSTRB control */
#define LOCOMO_KCMD             0x08    /* KSTRB command */
#define LOCOMO_KIC              0x0c    /* Key interrupt */

/* Front light adjustment controller */
#define LOCOMO_FRONTLIGHT       0xc8
#define LOCOMO_ALS              0x00    /* Adjust light cycle */
#define LOCOMO_ALD              0x04    /* Adjust light duty */

#define LOCOMO_ALC_EN           0x8000

/* Backlight controller: TFT signal */
#define LOCOMO_BACKLIGHT        0x38
#define LOCOMO_TC               0x00            /* TFT control signal */
#define LOCOMO_CPSD             0x04            /* CPS delay */

/* Audio controller */
#define LOCOMO_AUDIO            0x54
#define LOCOMO_ACC              0x00    /* Audio clock */
#define LOCOMO_PAIF             0xD0    /* PCM audio interface */
/* Audio clock */
#define LOCOMO_ACC_XON          0x80
#define LOCOMO_ACC_XEN          0x40
#define LOCOMO_ACC_XSEL0        0x00
#define LOCOMO_ACC_XSEL1        0x20
#define LOCOMO_ACC_MCLKEN       0x10
#define LOCOMO_ACC_64FSEN       0x08
#define LOCOMO_ACC_CLKSEL000    0x00    /* mclk  2 */
#define LOCOMO_ACC_CLKSEL001    0x01    /* mclk  3 */
#define LOCOMO_ACC_CLKSEL010    0x02    /* mclk  4 */
#define LOCOMO_ACC_CLKSEL011    0x03    /* mclk  6 */
#define LOCOMO_ACC_CLKSEL100    0x04    /* mclk  8 */
#define LOCOMO_ACC_CLKSEL101    0x05    /* mclk 12 */
/* PCM audio interface */
#define LOCOMO_PAIF_SCINV       0x20
#define LOCOMO_PAIF_SCEN        0x10
#define LOCOMO_PAIF_LRCRST      0x08
#define LOCOMO_PAIF_LRCEVE      0x04
#define LOCOMO_PAIF_LRCINV      0x02
#define LOCOMO_PAIF_LRCEN       0x01

/* LED controller */
#define LOCOMO_LED              0xe8
#define LOCOMO_LPT0             0x00
#define LOCOMO_LPT1             0x04
/* LED control */
#define LOCOMO_LPT_TOFH         0x80
#define LOCOMO_LPT_TOFL         0x08
#define LOCOMO_LPT_TOH(TOH)     ((TOH & 0x7) << 4)
#define LOCOMO_LPT_TOL(TOL)     ((TOL & 0x7))

#define LOCOMO_DEVID_KEYBOARD   0
#define LOCOMO_DEVID_FRONTLIGHT 1
#define LOCOMO_DEVID_BACKLIGHT  2
#define LOCOMO_DEVID_AUDIO      3
#define LOCOMO_DEVID_LED        4
#define LOCOMO_DEVID_UART       5
#define LOCOMO_DEVID_SPI        6

struct locomo_dev {
        struct device   dev;
        unsigned int    devid;
        unsigned int    irq[1];

        void            *mapbase;
        unsigned long   length;

        u64             dma_mask;
};

#define LOCOMO_DEV(_d)  container_of((_d), struct locomo_dev, dev)

#define locomo_get_drvdata(d)   dev_get_drvdata(&(d)->dev)
#define locomo_set_drvdata(d,p) dev_set_drvdata(&(d)->dev, p)

struct locomo_driver {
        struct device_driver    drv;
        unsigned int            devid;
        int (*probe)(struct locomo_dev *);
        void (*remove)(struct locomo_dev *);
};

#define LOCOMO_DRV(_d)  container_of_const((_d), struct locomo_driver, drv)

#define LOCOMO_DRIVER_NAME(_ldev) ((_ldev)->dev.driver->name)

extern void locomolcd_power(int on);

int locomo_driver_register(struct locomo_driver *);
void locomo_driver_unregister(struct locomo_driver *);

/* GPIO control functions */
void locomo_gpio_set_dir(struct device *dev, unsigned int bits, unsigned int dir);
int locomo_gpio_read_level(struct device *dev, unsigned int bits);
int locomo_gpio_read_output(struct device *dev, unsigned int bits);
void locomo_gpio_write(struct device *dev, unsigned int bits, unsigned int set);

/* M62332 control function */
void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int channel);

/* Frontlight control */
void locomo_frontlight_set(struct locomo_dev *dev, int duty, int vr, int bpwf);

struct locomo_platform_data {
        int     irq_base;       /* IRQ base for cascaded on-chip IRQs */
};

#endif