include/smsc_sio1007.h

   1 /*
   2  * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #ifndef _SMSC_SIO1007_H_
   8 #define _SMSC_SIO1007_H_
   9
  10 /*
  11  * The I/O base address of SIO1007 at power-up is determined by the SYSOPT0
  12  * and SYSOPT1 pins at the deasserting edge of PCIRST#. The combination of
  13  * SYSOPT0 and SYSOPT1 determines one of the following addresses.
  14  */
  15 #define SIO1007_IOPORT0         0x002e
  16 #define SIO1007_IOPORT1         0x004e
  17 #define SIO1007_IOPORT2         0x162e
  18 #define SIO1007_IOPORT3         0x164e
  19
  20 /* SIO1007 registers */
  21
  22 #define DEV_POWER_CTRL          0x02
  23 #define UART1_POWER_ON          (1 << 3)
  24 #define UART2_POWER_ON          (1 << 7)
  25
  26 #define UART1_IOBASE            0x24
  27 #define UART2_IOBASE            0x25
  28 #define UART_IRQ                0x28
  29
  30 #define RTR_IOBASE_HIGH         0x21
  31 #define RTR_IOBASE_LOW          0x30
  32
  33 #define GPIO0_DIR               0x31
  34 #define GPIO1_DIR               0x35
  35 #define GPIO_DIR_INPUT          0
  36 #define GPIO_DIR_OUTPUT         1
  37
  38 #define GPIO0_POL               0x32
  39 #define GPIO1_POL               0x36
  40 #define GPIO_POL_NO_INVERT      0
  41 #define GPIO_POL_INVERT         1
  42
  43 #define GPIO0_TYPE              0x33
  44 #define GPIO1_TYPE              0x37
  45 #define GPIO_TYPE_PUSH_PULL     0
  46 #define GPIO_TYPE_OPEN_DRAIN    1
  47
  48 #define DEV_ACTIVATE            0x3a
  49 #define RTR_EN                  (1 << 1)
  50
  51 /* Runtime register offset */
  52
  53 #define GPIO0_DATA              0xc
  54 #define GPIO1_DATA              0xe
  55
  56 /* Number of serial ports supported */
  57 #define SIO1007_UART_NUM        2
  58
  59 /* Number of gpio pins supported */
  60 #define GPIO_NUM_PER_GROUP      8
  61 #define GPIO_GROUP_NUM          2
  62 #define SIO1007_GPIO_NUM        (GPIO_NUM_PER_GROUP * GPIO_GROUP_NUM)
  63
  64 /**
  65  * Configure the I/O port address of the specified serial device and
  66  * enable the serial device.
  67  *
  68  * @port:       SIO1007 I/O port address
  69  * @num:        serial device number (0 or 1)
  70  * @iobase:     processor I/O port address to assign to this serial device
  71  * @irq:        processor IRQ number to assign to this serial device
  72  */
  73 void sio1007_enable_serial(int port, int num, int iobase, int irq);
  74
  75 /**
  76  * Configure the I/O port address of the runtime register block and
  77  * enable the address decoding.
  78  *
  79  * @port:       SIO1007 I/O port address
  80  * @iobase:     processor I/O port address to assign to the runtime registers
  81  */
  82 void sio1007_enable_runtime(int port, int iobase);
  83
  84 /**
  85  * Configure the direction/polority/type of a specified GPIO pin
  86  *
  87  * @port:       SIO1007 I/O port address
  88  * @gpio:       GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37)
  89  * @dir:        GPIO_DIR_INPUT or GPIO_DIR_OUTPUT
  90  * @pol:        GPIO_POL_NO_INVERT or GPIO_POL_INVERT
  91  * @type:       GPIO_TYPE_PUSH_PULL or GPIO_TYPE_OPEN_DRAIN
  92  */
  93 void sio1007_gpio_config(int port, int gpio, int dir, int pol, int type);
  94
  95 /**
  96  * Get a GPIO pin value.
  97  * This will work whether the GPIO is an input or an output.
  98  *
  99  * @port:       runtime register block I/O port address
 100  * @gpio:       GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37)
 101  * @return:     0 if low, 1 if high, -EINVAL if gpio number is invalid
 102  */
 103 int sio1007_gpio_get_value(int port, int gpio);
 104
 105 /**
 106  * Set a GPIO pin value.
 107  * This will only work when the GPIO is configured as an output.
 108  *
 109  * @port:       runtime register block I/O port address
 110  * @gpio:       GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37)
 111  * @val:        0 if low, 1 if high
 112  */
 113 void sio1007_gpio_set_value(int port, int gpio, int val);
 114
 115 #endif /* _SMSC_SIO1007_H_ */