66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __GRLIB_APBUART_H__
|
|
#define __GRLIB_APBUART_H__
|
|
|
|
#include <asm/io.h>
|
|
|
|
#define UART_NR 8
|
|
static int grlib_apbuart_port_nr;
|
|
|
|
struct grlib_apbuart_regs_map {
|
|
u32 data;
|
|
u32 status;
|
|
u32 ctrl;
|
|
u32 scaler;
|
|
};
|
|
|
|
struct amba_prom_registers {
|
|
unsigned int phys_addr;
|
|
unsigned int reg_size;
|
|
};
|
|
|
|
/*
|
|
* The following defines the bits in the APBUART Status Registers.
|
|
*/
|
|
#define UART_STATUS_DR 0x00000001 /* Data Ready */
|
|
#define UART_STATUS_TSE 0x00000002 /* TX Send Register Empty */
|
|
#define UART_STATUS_THE 0x00000004 /* TX Hold Register Empty */
|
|
#define UART_STATUS_BR 0x00000008 /* Break Error */
|
|
#define UART_STATUS_OE 0x00000010 /* RX Overrun Error */
|
|
#define UART_STATUS_PE 0x00000020 /* RX Parity Error */
|
|
#define UART_STATUS_FE 0x00000040 /* RX Framing Error */
|
|
#define UART_STATUS_ERR 0x00000078 /* Error Mask */
|
|
|
|
/*
|
|
* The following defines the bits in the APBUART Ctrl Registers.
|
|
*/
|
|
#define UART_CTRL_RE 0x00000001 /* Receiver enable */
|
|
#define UART_CTRL_TE 0x00000002 /* Transmitter enable */
|
|
#define UART_CTRL_RI 0x00000004 /* Receiver interrupt enable */
|
|
#define UART_CTRL_TI 0x00000008 /* Transmitter irq */
|
|
#define UART_CTRL_PS 0x00000010 /* Parity select */
|
|
#define UART_CTRL_PE 0x00000020 /* Parity enable */
|
|
#define UART_CTRL_FL 0x00000040 /* Flow control enable */
|
|
#define UART_CTRL_LB 0x00000080 /* Loopback enable */
|
|
|
|
#define APBBASE(port) ((struct grlib_apbuart_regs_map *)((port)->membase))
|
|
|
|
#define APBBASE_DATA_P(port) (&(APBBASE(port)->data))
|
|
#define APBBASE_STATUS_P(port) (&(APBBASE(port)->status))
|
|
#define APBBASE_CTRL_P(port) (&(APBBASE(port)->ctrl))
|
|
#define APBBASE_SCALAR_P(port) (&(APBBASE(port)->scaler))
|
|
|
|
#define UART_GET_CHAR(port) (__raw_readl(APBBASE_DATA_P(port)))
|
|
#define UART_PUT_CHAR(port, v) (__raw_writel(v, APBBASE_DATA_P(port)))
|
|
#define UART_GET_STATUS(port) (__raw_readl(APBBASE_STATUS_P(port)))
|
|
#define UART_PUT_STATUS(port, v)(__raw_writel(v, APBBASE_STATUS_P(port)))
|
|
#define UART_GET_CTRL(port) (__raw_readl(APBBASE_CTRL_P(port)))
|
|
#define UART_PUT_CTRL(port, v) (__raw_writel(v, APBBASE_CTRL_P(port)))
|
|
#define UART_GET_SCAL(port) (__raw_readl(APBBASE_SCALAR_P(port)))
|
|
#define UART_PUT_SCAL(port, v) (__raw_writel(v, APBBASE_SCALAR_P(port)))
|
|
|
|
#define UART_RX_DATA(s) (((s) & UART_STATUS_DR) != 0)
|
|
#define UART_TX_READY(s) (((s) & UART_STATUS_THE) != 0)
|
|
|
|
#endif /* __GRLIB_APBUART_H__ */
|