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[PATCH] ppc32 CPM_UART: fixes and improvements 

A number of small issues are fixed, and added the header file, missed from the
original series. With this, driver should be pretty stable as tested among
both platform-device-driven and "old way" boards. Also added missing GPL
statement , and updated year field on existing ones to reflect
code update.

Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Vitaly Bordug 2006-04-29 23:06:00 +04:00 committed by Paul Mackerras
parent 61f5657c50
commit 6e1976961c
6 changed files with 104 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/ppc/platforms/mpc866ads_setup.c
View File

@ -378,7 +378,7 @@ int __init mpc866ads_init(void)
ppc_sys_device_setfunc(MPC8xx_CPM_SMC1, PPC_SYS_FUNC_UART);
#endif
#ifdef CONFIG_SERIAL_CPM_SMCer
#ifdef CONFIG_SERIAL_CPM_SMC
ppc_sys_device_enable(MPC8xx_CPM_SMC2);
ppc_sys_device_setfunc(MPC8xx_CPM_SMC2, PPC_SYS_FUNC_UART);
#endif

19
drivers/serial/cpm_uart/cpm_uart.h
View File

@ -5,6 +5,13 @@
*
* Copyright (C) 2004 Freescale Semiconductor, Inc.
*
* 2006 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*
*/
#ifndef CPM_UART_H
#define CPM_UART_H
@ -101,12 +108,13 @@ static inline unsigned long cpu2cpm_addr(void* addr, struct uart_cpm_port *pinfo
int offset;
u32 val = (u32)addr;
/* sane check */
if ((val >= (u32)pinfo->mem_addr) &&
if (likely((val >= (u32)pinfo->mem_addr)) &&
(val<((u32)pinfo->mem_addr + pinfo->mem_size))) {
offset = val - (u32)pinfo->mem_addr;
return pinfo->dma_addr+offset;
}
printk("%s(): address %x to translate out of range!\n", __FUNCTION__, val);
/* something nasty happened */
BUG();
return 0;
}
@ -115,12 +123,13 @@ static inline void *cpm2cpu_addr(unsigned long addr, struct uart_cpm_port *pinfo
int offset;
u32 val = addr;
/* sane check */
if ((val >= pinfo->dma_addr) &&
(val<(pinfo->dma_addr + pinfo->mem_size))) {
if (likely((val >= pinfo->dma_addr) &&
(val<(pinfo->dma_addr + pinfo->mem_size)))) {
offset = val - (u32)pinfo->dma_addr;
return (void*)(pinfo->mem_addr+offset);
}
printk("%s(): address %x to translate out of range!\n", __FUNCTION__, val);
/* something nasty happened */
BUG();
return 0;
}

31
drivers/serial/cpm_uart/cpm_uart_core.c
View File

@ -12,7 +12,8 @@
*
* Copyright (C) 2004 Freescale Semiconductor, Inc.
* (C) 2004 Intracom, S.A.
* (C) 2005 MontaVista Software, Inc. by Vitaly Bordug <vbordug@ru.mvista.com>
* (C) 2005-2006 MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -81,7 +82,7 @@ early_uart_get_pdev(int index)
}
void cpm_uart_count(void)
static void cpm_uart_count(void)
{
cpm_uart_nr = 0;
#ifdef CONFIG_SERIAL_CPM_SMC1
@ -104,6 +105,21 @@ void cpm_uart_count(void)
#endif
}
/* Get UART number by its id */
static int cpm_uart_id2nr(int id)
{
int i;
if (id < UART_NR) {
for (i=0; i<UART_NR; i++) {
if (cpm_uart_port_map[i] == id)
return i;
}
}
/* not found or invalid argument */
return -1;
}
/*
* Check, if transmit buffers are processed
*/
@ -1012,7 +1028,11 @@ int cpm_uart_drv_get_platform_data(struct platform_device *pdev, int is_con)
int line;
u32 mem, pram;
for (line=0; line<UART_NR && cpm_uart_port_map[line]!=pdata->fs_no; line++);
line = cpm_uart_id2nr(idx);
if(line < 0) {
printk(KERN_ERR"%s(): port %d is not registered", __FUNCTION__, idx);
return -1;
}
pinfo = (struct uart_cpm_port *) &cpm_uart_ports[idx];
@ -1245,8 +1265,7 @@ static int cpm_uart_drv_probe(struct device *dev)
}
pdata = pdev->dev.platform_data;
pr_debug("cpm_uart_drv_probe: Adding CPM UART %d\n",
cpm_uart_port_map[pdata->fs_no]);
pr_debug("cpm_uart_drv_probe: Adding CPM UART %d\n", cpm_uart_id2nr(pdata->fs_no));
if ((ret = cpm_uart_drv_get_platform_data(pdev, 0)))
return ret;
@ -1265,7 +1284,7 @@ static int cpm_uart_drv_remove(struct device *dev)
struct fs_uart_platform_info *pdata = pdev->dev.platform_data;
pr_debug("cpm_uart_drv_remove: Removing CPM UART %d\n",
cpm_uart_port_map[pdata->fs_no]);
cpm_uart_id2nr(pdata->fs_no));
uart_remove_one_port(&cpm_reg, &cpm_uart_ports[pdata->fs_no].port);
return 0;

2
drivers/serial/cpm_uart/cpm_uart_cpm1.c
View File

@ -8,6 +8,8 @@
*
* Copyright (C) 2004 Freescale Semiconductor, Inc.
* (C) 2004 Intracom, S.A.
* (C) 2006 MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by

2
drivers/serial/cpm_uart/cpm_uart_cpm2.c
View File

@ -8,6 +8,8 @@
*
* Copyright (C) 2004 Freescale Semiconductor, Inc.
* (C) 2004 Intracom, S.A.
* (C) 2006 MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by

60
include/linux/fs_uart_pd.h Normal file
View File

@ -0,0 +1,60 @@
/*
* Platform information definitions for the CPM Uart driver.
*
* 2006 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#ifndef FS_UART_PD_H
#define FS_UART_PD_H
#include <linux/version.h>
#include <asm/types.h>
enum fs_uart_id {
fsid_smc1_uart,
fsid_smc2_uart,
fsid_scc1_uart,
fsid_scc2_uart,
fsid_scc3_uart,
fsid_scc4_uart,
fs_uart_nr,
};
static inline int fs_uart_id_scc2fsid(int id)
{
return fsid_scc1_uart + id - 1;
}
static inline int fs_uart_id_fsid2scc(int id)
{
return id - fsid_scc1_uart + 1;
}
static inline int fs_uart_id_smc2fsid(int id)
{
return fsid_smc1_uart + id - 1;
}
static inline int fs_uart_id_fsid2smc(int id)
{
return id - fsid_smc1_uart + 1;
}
struct fs_uart_platform_info {
void(*init_ioports)(void);
/* device specific information */
int fs_no; /* controller index */
u32 uart_clk;
u8 tx_num_fifo;
u8 tx_buf_size;
u8 rx_num_fifo;
u8 rx_buf_size;
u8 brg;
};
#endif