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_ */ 116