[PATCH 2/2] rzx50: add poweroff support

[Antony Pavlov]

Ok, I'll fix it in a few hours.

On 25 June 2012 11:32, Sascha Hauer <s.hauer at pengutronix.de> wrote:
> Hi Antony,
>
> This patch introduces some new build warnings in rx50_defconfig. Could you fix these?
>
> arch/mips/mach-xburst/reset-jz4750.c: In function 'poweroff':
> arch/mips/mach-xburst/reset-jz4750.c:68: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast
> arch/mips/mach-xburst/reset-jz4750.c:71: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
> arch/mips/mach-xburst/reset-jz4750.c:73: warning: 'noreturn' function does return
>
> Thanks
>  Sascha
>
> On Wed, Jun 13, 2012 at 11:43:08PM +0400, Antony Pavlov wrote:
>> Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
>> ---
>>  arch/mips/mach-xburst/Kconfig                     |    1 +
>>  arch/mips/mach-xburst/include/mach/jz4750d_regs.h |   31 +++++++++++++++++++++
>>  arch/mips/mach-xburst/reset-jz4750.c              |   28 +++++++++++++++++++
>>  3 files changed, 60 insertions(+)
>>
>> diff --git a/arch/mips/mach-xburst/Kconfig b/arch/mips/mach-xburst/Kconfig
>> index 60e411c..c72b741 100644
>> --- a/arch/mips/mach-xburst/Kconfig
>> +++ b/arch/mips/mach-xburst/Kconfig
>> @@ -12,6 +12,7 @@ choice
>>
>>  config BOARD_RZX50
>>       bool "Ritmix RZX-50"
>> +     select HAS_POWEROFF
>>       select CPU_JZ4755
>>
>>  endchoice
>> diff --git a/arch/mips/mach-xburst/include/mach/jz4750d_regs.h b/arch/mips/mach-xburst/include/mach/jz4750d_regs.h
>> index 717493b..eafdd2f 100644
>> --- a/arch/mips/mach-xburst/include/mach/jz4750d_regs.h
>> +++ b/arch/mips/mach-xburst/include/mach/jz4750d_regs.h
>> @@ -15,6 +15,7 @@
>>
>>  #define TCU_BASE        0xb0002000
>>  #define WDT_BASE        0xb0002000
>> +#define RTC_BASE        0xb0003000
>>  #define UART1_BASE      0xb0031000
>>
>>  /*************************************************************************
>> @@ -77,4 +78,34 @@
>>
>>  #define WDT_TCER_TCEN                (1 << 0)
>>
>> +/*************************************************************************
>> + * RTC
>> + *************************************************************************/
>> +#define RTC_RCR              (RTC_BASE + 0x00) /* RTC Control Register */
>> +#define RTC_RSR              (RTC_BASE + 0x04) /* RTC Second Register */
>> +#define RTC_RSAR     (RTC_BASE + 0x08) /* RTC Second Alarm Register */
>> +#define RTC_RGR              (RTC_BASE + 0x0c) /* RTC Regulator Register */
>> +
>> +#define RTC_HCR              (RTC_BASE + 0x20) /* Hibernate Control Register */
>> +#define RTC_HWFCR    (RTC_BASE + 0x24) /* Hibernate Wakeup Filter Counter Reg */
>> +#define RTC_HRCR     (RTC_BASE + 0x28) /* Hibernate Reset Counter Register */
>> +#define RTC_HWCR     (RTC_BASE + 0x2c) /* Hibernate Wakeup Control Register */
>> +#define RTC_HWRSR    (RTC_BASE + 0x30) /* Hibernate Wakeup Status Register */
>> +#define RTC_HSPR     (RTC_BASE + 0x34) /* Hibernate Scratch Pattern Register */
>> +
>> +/* RTC Control Register */
>> +#define RTC_RCR_WRDY_BIT 7
>> +#define RTC_RCR_WRDY (1 << 7)  /* Write Ready Flag */
>> +#define RTC_RCR_1HZ_BIT      6
>> +#define RTC_RCR_1HZ  (1 << RTC_RCR_1HZ_BIT)  /* 1Hz Flag */
>> +#define RTC_RCR_1HZIE        (1 << 5)  /* 1Hz Interrupt Enable */
>> +#define RTC_RCR_AF_BIT       4
>> +#define RTC_RCR_AF   (1 << RTC_RCR_AF_BIT)  /* Alarm Flag */
>> +#define RTC_RCR_AIE  (1 << 3)  /* Alarm Interrupt Enable */
>> +#define RTC_RCR_AE   (1 << 2)  /* Alarm Enable */
>> +#define RTC_RCR_RTCE (1 << 0)  /* RTC Enable */
>> +
>> +/* Hibernate Control Register */
>> +#define RTC_HCR_PD           (1 << 0)  /* Power Down */
>> +
>>  #endif /* __JZ4750D_REGS_H__ */
>> diff --git a/arch/mips/mach-xburst/reset-jz4750.c b/arch/mips/mach-xburst/reset-jz4750.c
>> index 3540ca9..4bda56c 100644
>> --- a/arch/mips/mach-xburst/reset-jz4750.c
>> +++ b/arch/mips/mach-xburst/reset-jz4750.c
>> @@ -29,6 +29,19 @@
>>
>>  #define JZ_EXTAL 24000000
>>
>> +static void jz4750d_halt(void)
>> +{
>> +     while (1) {
>> +             __asm__(".set push;\n"
>> +                     ".set mips3;\n"
>> +                     "wait;\n"
>> +                     ".set pop;\n"
>> +             );
>> +     }
>> +
>> +     unreachable();
>> +}
>> +
>>  void __noreturn reset_cpu(ulong addr)
>>  {
>>       __raw_writew(WDT_TCSR_PRESCALE4 | WDT_TCSR_EXT_EN, (u16 *)WDT_TCSR);
>> @@ -44,3 +57,18 @@ void __noreturn reset_cpu(ulong addr)
>>       unreachable();
>>  }
>>  EXPORT_SYMBOL(reset_cpu);
>> +
>> +void __noreturn poweroff()
>> +{
>> +     u32 ctrl;
>> +
>> +     shutdown_barebox();
>> +
>> +     do {
>> +             ctrl = readl(RTC_RCR);
>> +     } while (!(ctrl & RTC_RCR_WRDY));
>> +
>> +     writel(RTC_HCR_PD, RTC_HCR);
>> +     jz4750d_halt();
>> +}
>> +EXPORT_SYMBOL(poweroff);
>> --
>> 1.7.10
>>
>>
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>>
>
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-- 
Best regards,
  Antony Pavlov