1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2016, Bin Meng <bmeng.cn (at) 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_ */ 115
