132 lines
2.8 KiB
C
132 lines
2.8 KiB
C
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#ifndef DEVICE_UART_H
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#define DEVICE_UART_H
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#include "typedef.h"
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#include "device/device.h"
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#include "generic/ioctl.h"
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#include "system/task.h"
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#define UART_DISABLE 0x00000000
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#define UART_DMA_SUPPORT 0x00000001
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#define UART_TX_USE_DMA 0x00000003
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#define UART_RX_USE_DMA 0x00000005
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#define UART_DEBUG 0x00000008
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struct uart_outport {
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u8 tx_pin;
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u8 rx_pin;
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u16 value;
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};
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extern void putbyte(char a);
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enum uart_clk_src {
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LSB_CLK,
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OSC_CLK,
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PLL_48M,
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};
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enum _uart_port_out {
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//uart0
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PORTC_0_1 = 0x00001000,
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PORTG_6_7 = 0x00002000,
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PORTH_12_13 = 0x00003000,
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PORTB_14_15 = 0x00004000,
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//uart1
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PORTC_2_3 = 0x00005000,
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PORTH_2_5 = 0x00006000,
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PORTH_14_15 = 0x00007000,
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PORTC_6_7 = 0x00008000,
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//uart3
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PORTE_0_1 = 0x00009000,
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PORTB_4_3 = 0x0000A000,
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PORTD_9_10 = 0x0000B000,
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PORTD_14_15 = 0x0000C000,
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PORT_REMAP = 0x0000D000,
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};
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struct uart_platform_data {
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u8 *name;
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u8 irq;
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u8 tx_pin;
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u8 rx_pin;
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u32 flags;
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u32 baudrate;
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enum _uart_port_out port;
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void (*port_remap_func)(void);
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u32 max_continue_recv_cnt;
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u32 idle_sys_clk_cnt;
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enum uart_clk_src clk_src;
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};
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enum {
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UART_CIRCULAR_BUFFER_WRITE_OVERLAY = -1,
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UART_RECV_TIMEOUT = -2,
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UART_RECV_EXIT = -3,
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};
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#define UART_MAGIC 'U'
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#define UART_FLUSH _IO(UART_MAGIC,1)
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#define UART_SET_RECV_ALL _IOW(UART_MAGIC,2,bool)
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#define UART_SET_RECV_BLOCK _IOW(UART_MAGIC,3,bool)
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#define UART_SET_RECV_TIMEOUT _IOW(UART_MAGIC,4,u32)
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#define UART_SET_RECV_TIMEOUT_CB _IOW(UART_MAGIC,5,int (*)(void))
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#define UART_GET_RECV_CNT _IOR(UART_MAGIC,6,u32)
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#define UART_START _IO(UART_MAGIC,7)
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#define UART_SET_CIRCULAR_BUFF_ADDR _IOW(UART_MAGIC,8,void *)
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#define UART_SET_CIRCULAR_BUFF_LENTH _IOW(UART_MAGIC,9,u32)
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#define UART_PLATFORM_DATA_BEGIN(data) \
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static const struct uart_platform_data data = {
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#define UART_PLATFORM_DATA_END() \
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};
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struct uart_device {
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char *name;
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const struct uart_operations *ops;
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struct device dev;
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const struct uart_platform_data *priv;
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OS_MUTEX mutex;
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};
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struct uart_operations {
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int (*init)(struct uart_device *);
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int (*read)(struct uart_device *, void *buf, u32 len);
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int (*write)(struct uart_device *, void *buf, u16 len);
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int (*ioctl)(struct uart_device *, u32 cmd, u32 arg);
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int (*close)(struct uart_device *);
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};
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#define REGISTER_UART_DEVICE(dev) \
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static struct uart_device dev sec(.uart)
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extern struct uart_device uart_device_begin[], uart_device_end[];
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#define list_for_each_uart_device(p) \
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for (p=uart_device_begin; p<uart_device_end; p++)
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extern const struct device_operations uart_dev_ops;
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#endif
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