From: Filip Bozuta Date: Wed, 15 Jan 2020 19:36:40 +0000 (+0100) Subject: linux-user: Add support for read/clear RTC voltage low detector using ioctls X-Git-Tag: v5.0.0-rc0~130^2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7b09746679c1815115249ec69197e454efdfb15;p=thirdparty%2Fqemu.git linux-user: Add support for read/clear RTC voltage low detector using ioctls This patch implements functionalities of following ioctls: RTC_VL_READ - Read voltage low detection information Read the voltage low for RTCs that support voltage low. The third ioctl's' argument points to an int in which the voltage low is returned. RTC_VL_CLR - Clear voltage low information Clear the information about voltage low for RTCs that support voltage low. The third ioctl(2) argument is ignored. Implementation notes: Since one ioctl has a pointer to 'int' as its third agrument, and another ioctl has NULL as its third argument, their implementation was straightforward. Reviewed-by: Laurent Vivier Signed-off-by: Filip Bozuta Message-Id: <1579117007-7565-7-git-send-email-Filip.Bozuta@rt-rk.com> Signed-off-by: Laurent Vivier --- diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 789764d1131..73dcc761e64 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -89,6 +89,8 @@ IOCTL(RTC_WKALM_SET, IOC_W, MK_PTR(MK_STRUCT(STRUCT_rtc_wkalrm))) IOCTL(RTC_PLL_GET, IOC_R, MK_PTR(MK_STRUCT(STRUCT_rtc_pll_info))) IOCTL(RTC_PLL_SET, IOC_W, MK_PTR(MK_STRUCT(STRUCT_rtc_pll_info))) + IOCTL(RTC_VL_READ, IOC_R, MK_PTR(TYPE_INT)) + IOCTL(RTC_VL_CLR, 0, TYPE_NULL) IOCTL(BLKROSET, IOC_W, MK_PTR(TYPE_INT)) IOCTL(BLKROGET, IOC_R, MK_PTR(TYPE_INT)) diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 9f7aad49c68..9b61ae8547d 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -796,6 +796,8 @@ struct target_rtc_pll_info { struct target_rtc_pll_info) #define TARGET_RTC_PLL_SET TARGET_IOW('p', 0x12, \ struct target_rtc_pll_info) +#define TARGET_RTC_VL_READ TARGET_IOR('p', 0x13, int) +#define TARGET_RTC_VL_CLR TARGET_IO('p', 0x14) #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_SH4) || \ defined(TARGET_XTENSA)