diff options
| author | Filip Bozuta <Filip.Bozuta@rt-rk.com> | 2020-01-15 20:36:40 +0100 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2020-01-22 15:21:37 +0100 |
| commit | a7b09746679c1815115249ec69197e454efdfb15 (patch) | |
| tree | b726dcefa89cbeba17158a235d8ae8ee9d22823c /linux-user | |
| parent | 373b067ff077d92bf23abd2224b49cccf5dea846 (diff) | |
| download | qemu-a7b09746679c1815115249ec69197e454efdfb15.zip | |
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 <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-7-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/ioctls.h | 2 | ||||
| -rw-r--r-- | linux-user/syscall_defs.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 789764d113..73dcc761e6 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 9f7aad49c6..9b61ae8547 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) |