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locomo.h

/*
 * 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))

extern struct bus_type locomo_bus_type;

#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 *);
      int (*remove)(struct locomo_dev *);
      int (*suspend)(struct locomo_dev *, pm_message_t);
      int (*resume)(struct locomo_dev *);
};

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

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

void locomo_lcd_power(struct locomo_dev *, int, unsigned int);

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);

#endif

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