include/smsc_sio1007.h

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