1 #ifndef __GRLIB_APBUART_H__ 2 #define __GRLIB_APBUART_H__ 3 4 #include <asm/io.h> 5 6 #define UART_NR 8 7 static int grlib_apbuart_port_nr; 8 9 struct grlib_apbuart_regs_map { 10 u32 data; 11 u32 status; 12 u32 ctrl; 13 u32 scaler; 14 }; 15 16 struct amba_prom_registers { 17 unsigned int phys_addr; 18 unsigned int reg_size; 19 }; 20 21 /* 22 * The following defines the bits in the APBUART Status Registers. 23 */ 24 #define UART_STATUS_DR 0x00000001 /* Data Ready */ 25 #define UART_STATUS_TSE 0x00000002 /* TX Send Register Empty */ 26 #define UART_STATUS_THE 0x00000004 /* TX Hold Register Empty */ 27 #define UART_STATUS_BR 0x00000008 /* Break Error */ 28 #define UART_STATUS_OE 0x00000010 /* RX Overrun Error */ 29 #define UART_STATUS_PE 0x00000020 /* RX Parity Error */ 30 #define UART_STATUS_FE 0x00000040 /* RX Framing Error */ 31 #define UART_STATUS_ERR 0x00000078 /* Error Mask */ 32 33 /* 34 * The following defines the bits in the APBUART Ctrl Registers. 35 */ 36 #define UART_CTRL_RE 0x00000001 /* Receiver enable */ 37 #define UART_CTRL_TE 0x00000002 /* Transmitter enable */ 38 #define UART_CTRL_RI 0x00000004 /* Receiver interrupt enable */ 39 #define UART_CTRL_TI 0x00000008 /* Transmitter irq */ 40 #define UART_CTRL_PS 0x00000010 /* Parity select */ 41 #define UART_CTRL_PE 0x00000020 /* Parity enable */ 42 #define UART_CTRL_FL 0x00000040 /* Flow control enable */ 43 #define UART_CTRL_LB 0x00000080 /* Loopback enable */ 44 45 #define APBBASE(port) ((struct grlib_apbuart_regs_map *)((port)->membase)) 46 47 #define APBBASE_DATA_P(port) (&(APBBASE(port)->data)) 48 #define APBBASE_STATUS_P(port) (&(APBBASE(port)->status)) 49 #define APBBASE_CTRL_P(port) (&(APBBASE(port)->ctrl)) 50 #define APBBASE_SCALAR_P(port) (&(APBBASE(port)->scaler)) 51 52 #define UART_GET_CHAR(port) (__raw_readl(APBBASE_DATA_P(port))) 53 #define UART_PUT_CHAR(port, v) (__raw_writel(v, APBBASE_DATA_P(port))) 54 #define UART_GET_STATUS(port) (__raw_readl(APBBASE_STATUS_P(port))) 55 #define UART_PUT_STATUS(port, v)(__raw_writel(v, APBBASE_STATUS_P(port))) 56 #define UART_GET_CTRL(port) (__raw_readl(APBBASE_CTRL_P(port))) 57 #define UART_PUT_CTRL(port, v) (__raw_writel(v, APBBASE_CTRL_P(port))) 58 #define UART_GET_SCAL(port) (__raw_readl(APBBASE_SCALAR_P(port))) 59 #define UART_PUT_SCAL(port, v) (__raw_writel(v, APBBASE_SCALAR_P(port))) 60 61 #define UART_RX_DATA(s) (((s) & UART_STATUS_DR) != 0) 62 #define UART_TX_READY(s) (((s) & UART_STATUS_THE) != 0) 63 64 #endif /* __GRLIB_APBUART_H__ */ 65