linux-stable/arch/arm/plat-samsung/pm-debug.c
Arnd Bergmann 1fe054e71a ARM: S3C24XX: fix header file inclusions
The pm-core.h file does not include all the necessary headers,
and has a static declaration for a function that is not
defined in the same file, causing SAMSUNG_PM_DEBUG to
break on s3c24xx:

arch/arm/mach-s3c24xx/include/mach/pm-core.h:50:91: warning: 's3c_pm_show_resume_irqs' used but never defined
arch/arm/mach-s3c24xx/include/mach/pm-core.h: In function 's3c_pm_debug_init_uart':
arch/arm/mach-s3c24xx/include/mach/pm-core.h:16:34: error: 'S3C2410_CLKCON' undeclared (first use in this function)
  unsigned long tmp = __raw_readl(S3C2410_CLKCON);
                                  ^

This moves the code around slightly to avoid the errors.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:50:23 +09:00

99 lines
2.5 KiB
C

/*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
* Tomasz Figa <t.figa@samsung.com>
* Copyright (C) 2008 Openmoko, Inc.
* Copyright (C) 2004-2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* Samsung common power management (suspend to RAM) debug support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/io.h>
#include <asm/mach/map.h>
#include <plat/cpu.h>
#include <plat/pm-common.h>
#ifdef CONFIG_SAMSUNG_ATAGS
#include <plat/pm.h>
#include <mach/pm-core.h>
#else
static inline void s3c_pm_debug_init_uart(void) {}
static inline void s3c_pm_arch_update_uart(void __iomem *regs,
struct pm_uart_save *save) {}
#endif
static struct pm_uart_save uart_save;
extern void printascii(const char *);
void s3c_pm_dbg(const char *fmt, ...)
{
va_list va;
char buff[256];
va_start(va, fmt);
vsnprintf(buff, sizeof(buff), fmt, va);
va_end(va);
printascii(buff);
}
void s3c_pm_debug_init(void)
{
/* restart uart clocks so we can use them to output */
s3c_pm_debug_init_uart();
}
static inline void __iomem *s3c_pm_uart_base(void)
{
unsigned long paddr;
unsigned long vaddr;
debug_ll_addr(&paddr, &vaddr);
return (void __iomem *)vaddr;
}
void s3c_pm_save_uarts(void)
{
void __iomem *regs = s3c_pm_uart_base();
struct pm_uart_save *save = &uart_save;
save->ulcon = __raw_readl(regs + S3C2410_ULCON);
save->ucon = __raw_readl(regs + S3C2410_UCON);
save->ufcon = __raw_readl(regs + S3C2410_UFCON);
save->umcon = __raw_readl(regs + S3C2410_UMCON);
save->ubrdiv = __raw_readl(regs + S3C2410_UBRDIV);
if (!soc_is_s3c2410())
save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT);
S3C_PMDBG("UART[%p]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n",
regs, save->ulcon, save->ucon, save->ufcon, save->ubrdiv);
}
void s3c_pm_restore_uarts(void)
{
void __iomem *regs = s3c_pm_uart_base();
struct pm_uart_save *save = &uart_save;
s3c_pm_arch_update_uart(regs, save);
__raw_writel(save->ulcon, regs + S3C2410_ULCON);
__raw_writel(save->ucon, regs + S3C2410_UCON);
__raw_writel(save->ufcon, regs + S3C2410_UFCON);
__raw_writel(save->umcon, regs + S3C2410_UMCON);
__raw_writel(save->ubrdiv, regs + S3C2410_UBRDIV);
if (!soc_is_s3c2410())
__raw_writel(save->udivslot, regs + S3C2443_DIVSLOT);
}