mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 08:14:15 +08:00
dbae4258d1
cpm_uart/ subdirectory only has cpm_uart_core.c and cpm_uart.h now. Move them up and remove cpm_uart/ directory while renaming cpm_uart_core.c as cpm_uart.c Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Link: https://lore.kernel.org/r/9b8b8f89fc386480030f5339abe307541ae436a6.1691068700.git.christophe.leroy@csgroup.eu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
115 lines
2.3 KiB
C
115 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Driver for CPM (SCC/SMC) serial ports
|
|
*
|
|
* Copyright (C) 2004 Freescale Semiconductor, Inc.
|
|
*
|
|
* 2006 (c) MontaVista Software, Inc.
|
|
* Vitaly Bordug <vbordug@ru.mvista.com>
|
|
*/
|
|
#ifndef CPM_UART_H
|
|
#define CPM_UART_H
|
|
|
|
#include <linux/platform_device.h>
|
|
|
|
struct gpio_desc;
|
|
|
|
#if defined(CONFIG_CPM2)
|
|
#include "asm/cpm2.h"
|
|
#elif defined(CONFIG_CPM1)
|
|
#include "asm/cpm1.h"
|
|
#endif
|
|
|
|
#define DPRAM_BASE ((u8 __iomem *)cpm_muram_addr(0))
|
|
|
|
#define SERIAL_CPM_MAJOR 204
|
|
#define SERIAL_CPM_MINOR 46
|
|
|
|
#define IS_SMC(pinfo) (pinfo->flags & FLAG_SMC)
|
|
#define FLAG_SMC 0x00000002
|
|
#define FLAG_CONSOLE 0x00000001
|
|
|
|
#define UART_NR 6
|
|
|
|
#define RX_NUM_FIFO 4
|
|
#define RX_BUF_SIZE 32
|
|
#define TX_NUM_FIFO 4
|
|
#define TX_BUF_SIZE 32
|
|
|
|
#define GPIO_CTS 0
|
|
#define GPIO_RTS 1
|
|
#define GPIO_DCD 2
|
|
#define GPIO_DSR 3
|
|
#define GPIO_DTR 4
|
|
#define GPIO_RI 5
|
|
|
|
#define NUM_GPIOS (GPIO_RI+1)
|
|
|
|
struct uart_cpm_port {
|
|
struct uart_port port;
|
|
u16 rx_nrfifos;
|
|
u16 rx_fifosize;
|
|
u16 tx_nrfifos;
|
|
u16 tx_fifosize;
|
|
smc_t __iomem *smcp;
|
|
smc_uart_t __iomem *smcup;
|
|
scc_t __iomem *sccp;
|
|
scc_uart_t __iomem *sccup;
|
|
cbd_t __iomem *rx_bd_base;
|
|
cbd_t __iomem *rx_cur;
|
|
cbd_t __iomem *tx_bd_base;
|
|
cbd_t __iomem *tx_cur;
|
|
unsigned char *tx_buf;
|
|
unsigned char *rx_buf;
|
|
u32 flags;
|
|
struct clk *clk;
|
|
u8 brg;
|
|
uint dp_addr;
|
|
void *mem_addr;
|
|
dma_addr_t dma_addr;
|
|
u32 mem_size;
|
|
/* wait on close if needed */
|
|
int wait_closing;
|
|
/* value to combine with opcode to form cpm command */
|
|
u32 command;
|
|
struct gpio_desc *gpios[NUM_GPIOS];
|
|
};
|
|
|
|
/*
|
|
virtual to phys transtalion
|
|
*/
|
|
static inline unsigned long cpu2cpm_addr(void *addr,
|
|
struct uart_cpm_port *pinfo)
|
|
{
|
|
int offset;
|
|
u32 val = (u32)addr;
|
|
u32 mem = (u32)pinfo->mem_addr;
|
|
/* sane check */
|
|
if (likely(val >= mem && val < mem + pinfo->mem_size)) {
|
|
offset = val - mem;
|
|
return pinfo->dma_addr + offset;
|
|
}
|
|
/* something nasty happened */
|
|
BUG();
|
|
return 0;
|
|
}
|
|
|
|
static inline void *cpm2cpu_addr(unsigned long addr,
|
|
struct uart_cpm_port *pinfo)
|
|
{
|
|
int offset;
|
|
u32 val = addr;
|
|
u32 dma = (u32)pinfo->dma_addr;
|
|
/* sane check */
|
|
if (likely(val >= dma && val < dma + pinfo->mem_size)) {
|
|
offset = val - dma;
|
|
return pinfo->mem_addr + offset;
|
|
}
|
|
/* something nasty happened */
|
|
BUG();
|
|
return NULL;
|
|
}
|
|
|
|
|
|
#endif /* CPM_UART_H */
|