diff options
Diffstat (limited to 'include/smsc_sio1007.h')
-rw-r--r-- | include/smsc_sio1007.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/include/smsc_sio1007.h b/include/smsc_sio1007.h new file mode 100644 index 00000000000..805fa0ebb10 --- /dev/null +++ b/include/smsc_sio1007.h @@ -0,0 +1,115 @@ +/* + * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SMSC_SIO1007_H_ +#define _SMSC_SIO1007_H_ + +/* + * The I/O base address of SIO1007 at power-up is determined by the SYSOPT0 + * and SYSOPT1 pins at the deasserting edge of PCIRST#. The combination of + * SYSOPT0 and SYSOPT1 determines one of the following addresses. + */ +#define SIO1007_IOPORT0 0x002e +#define SIO1007_IOPORT1 0x004e +#define SIO1007_IOPORT2 0x162e +#define SIO1007_IOPORT3 0x164e + +/* SIO1007 registers */ + +#define DEV_POWER_CTRL 0x02 +#define UART1_POWER_ON (1 << 3) +#define UART2_POWER_ON (1 << 7) + +#define UART1_IOBASE 0x24 +#define UART2_IOBASE 0x25 +#define UART_IRQ 0x28 + +#define RTR_IOBASE_HIGH 0x21 +#define RTR_IOBASE_LOW 0x30 + +#define GPIO0_DIR 0x31 +#define GPIO1_DIR 0x35 +#define GPIO_DIR_INPUT 0 +#define GPIO_DIR_OUTPUT 1 + +#define GPIO0_POL 0x32 +#define GPIO1_POL 0x36 +#define GPIO_POL_NO_INVERT 0 +#define GPIO_POL_INVERT 1 + +#define GPIO0_TYPE 0x33 +#define GPIO1_TYPE 0x37 +#define GPIO_TYPE_PUSH_PULL 0 +#define GPIO_TYPE_OPEN_DRAIN 1 + +#define DEV_ACTIVATE 0x3a +#define RTR_EN (1 << 1) + +/* Runtime register offset */ + +#define GPIO0_DATA 0xc +#define GPIO1_DATA 0xe + +/* Number of serial ports supported */ +#define SIO1007_UART_NUM 2 + +/* Number of gpio pins supported */ +#define GPIO_NUM_PER_GROUP 8 +#define GPIO_GROUP_NUM 2 +#define SIO1007_GPIO_NUM (GPIO_NUM_PER_GROUP * GPIO_GROUP_NUM) + +/** + * Configure the I/O port address of the specified serial device and + * enable the serial device. + * + * @port: SIO1007 I/O port address + * @num: serial device number (0 or 1) + * @iobase: processor I/O port address to assign to this serial device + * @irq: processor IRQ number to assign to this serial device + */ +void sio1007_enable_serial(int port, int num, int iobase, int irq); + +/** + * Configure the I/O port address of the runtime register block and + * enable the address decoding. + * + * @port: SIO1007 I/O port address + * @iobase: processor I/O port address to assign to the runtime registers + */ +void sio1007_enable_runtime(int port, int iobase); + +/** + * Configure the direction/polority/type of a specified GPIO pin + * + * @port: SIO1007 I/O port address + * @gpio: GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37) + * @dir: GPIO_DIR_INPUT or GPIO_DIR_OUTPUT + * @pol: GPIO_POL_NO_INVERT or GPIO_POL_INVERT + * @type: GPIO_TYPE_PUSH_PULL or GPIO_TYPE_OPEN_DRAIN + */ +void sio1007_gpio_config(int port, int gpio, int dir, int pol, int type); + +/** + * Get a GPIO pin value. + * This will work whether the GPIO is an input or an output. + * + * @port: runtime register block I/O port address + * @gpio: GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37) + * @return: 0 if low, 1 if high, -EINVAL if gpio number is invalid + */ +int sio1007_gpio_get_value(int port, int gpio); + +/** + * Set a GPIO pin value. + * This will only work when the GPIO is configured as an output. + * + * @port: runtime register block I/O port address + * @gpio: GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37) + * @val: 0 if low, 1 if high + */ +void sio1007_gpio_set_value(int port, int gpio, int val); + +#endif /* _SMSC_SIO1007_H_ */ |