diff options
| author | Ben Dooks <ben-linux@fluff.org> | 2008-12-12 03:24:23 +0300 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2009-05-07 14:04:55 +0400 |
| commit | 57699e9adf1b44f281d808609b47816804763bfa (patch) | |
| tree | 61e2932babbbee5ae2c4ccb70554ee366da03fc5 /arch | |
| parent | 67b3e542ab1cf9f2fe3c1d4ae2aa16dd3b4a7e24 (diff) | |
| download | linux-57699e9adf1b44f281d808609b47816804763bfa.tar.xz | |
[ARM] S3C: Add debug to UART save and a per-arch callback pre-restore
Add a simple debug message on saving the UART state and add a per-arch
pre-restore function to be used by the s3c64xx restore code to ensure
the UARTs control registers do not go through any illegal state changes.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/plat-s3c/pm.c | 5 | ||||
| -rw-r--r-- | arch/arm/plat-s3c24xx/include/plat/pm-core.h | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c/pm.c b/arch/arm/plat-s3c/pm.c index 061182ca66e3..de4c4aa22468 100644 --- a/arch/arm/plat-s3c/pm.c +++ b/arch/arm/plat-s3c/pm.c @@ -83,6 +83,9 @@ static void s3c_pm_save_uart(unsigned int uart, struct pm_uart_save *save) save->ufcon = __raw_readl(regs + S3C2410_UFCON); save->umcon = __raw_readl(regs + S3C2410_UMCON); save->ubrdiv = __raw_readl(regs + S3C2410_UBRDIV); + + S3C_PMDBG("UART[%d]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n", + uart, save->ulcon, save->ucon, save->ufcon, save->ubrdiv); } static void s3c_pm_save_uarts(void) @@ -98,6 +101,8 @@ static void s3c_pm_restore_uart(unsigned int uart, struct pm_uart_save *save) { void __iomem *regs = S3C_VA_UARTx(uart); + 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); diff --git a/arch/arm/plat-s3c24xx/include/plat/pm-core.h b/arch/arm/plat-s3c24xx/include/plat/pm-core.h index c75882113e04..fb45dd9adca5 100644 --- a/arch/arm/plat-s3c24xx/include/plat/pm-core.h +++ b/arch/arm/plat-s3c24xx/include/plat/pm-core.h @@ -57,3 +57,8 @@ static inline void s3c_pm_arch_show_resume_irqs(void) s3c_pm_show_resume_irqs(IRQ_EINT4-4, __raw_readl(S3C2410_EINTPEND), s3c_irqwake_eintmask); } + +static inline void s3c_pm_arch_update_uart(void __iomem *regs, + struct pm_uart_save *save) +{ +} |