diff options
| author | Filip Bozuta <Filip.Bozuta@rt-rk.com> | 2020-01-15 20:36:39 +0100 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2020-01-22 15:20:51 +0100 |
| commit | 373b067ff077d92bf23abd2224b49cccf5dea846 (patch) | |
| tree | bf0193c1e990c9f67785b6ca5ecbb383b60668d7 /linux-user | |
| parent | abc81bf678941abfb1c003e71cc833bd8b46c7c6 (diff) | |
linux-user: Add support for getting/setting RTC PLL correction using ioctls
This patch implements functionalities of following ioctls:
RTC_PLL_GET - Getting PLL correction
Read the PLL correction for RTCs that support PLL. The PLL correction
is returned in the following structure:
struct rtc_pll_info {
int pll_ctrl; /* placeholder for fancier control */
int pll_value; /* get/set correction value */
int pll_max; /* max +ve (faster) adjustment value */
int pll_min; /* max -ve (slower) adjustment value */
int pll_posmult; /* factor for +ve correction */
int pll_negmult; /* factor for -ve correction */
long pll_clock; /* base PLL frequency */
};
A pointer to this structure should be passed as the third
ioctl's argument.
RTC_PLL_SET - Setting PLL correction
Sets the PLL correction for RTCs that support PLL. The PLL correction
that is set is specified by the rtc_pll_info structure pointed to by
the third ioctl's' argument.
Implementation notes:
All ioctls in this patch have a pointer to a structure rtc_pll_info
as their third argument. All elements of this structure are of
type 'int', except the last one that is of type 'long'. That is
the reason why a separate target structure (target_rtc_pll_info)
is defined in linux-user/syscall_defs. The rest of the
implementation is straightforward.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-6-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 | 14 | ||||
| -rw-r--r-- | linux-user/syscall_types.h | 9 |
3 files changed, 25 insertions, 0 deletions
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index e4c1fbf52b..789764d113 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -87,6 +87,8 @@ IOCTL(RTC_EPOCH_SET, IOC_W, TYPE_ULONG) IOCTL(RTC_WKALM_RD, IOC_R, MK_PTR(MK_STRUCT(STRUCT_rtc_wkalrm))) 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(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 c33432a374..9f7aad49c6 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -763,6 +763,16 @@ struct target_pollfd { #define TARGET_KDSETLED 0x4B32 /* set led state [lights, not flags] */ #define TARGET_KDSIGACCEPT 0x4B4E +struct target_rtc_pll_info { + int pll_ctrl; + int pll_value; + int pll_max; + int pll_min; + int pll_posmult; + int pll_negmult; + abi_long pll_clock; +}; + /* real time clock ioctls */ #define TARGET_RTC_AIE_ON TARGET_IO('p', 0x01) #define TARGET_RTC_AIE_OFF TARGET_IO('p', 0x02) @@ -782,6 +792,10 @@ struct target_pollfd { #define TARGET_RTC_EPOCH_SET TARGET_IOW('p', 0x0e, abi_ulong) #define TARGET_RTC_WKALM_RD TARGET_IOR('p', 0x10, struct rtc_wkalrm) #define TARGET_RTC_WKALM_SET TARGET_IOW('p', 0x0f, struct rtc_wkalrm) +#define TARGET_RTC_PLL_GET TARGET_IOR('p', 0x11, \ + struct target_rtc_pll_info) +#define TARGET_RTC_PLL_SET TARGET_IOW('p', 0x12, \ + struct target_rtc_pll_info) #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_SH4) || \ defined(TARGET_XTENSA) diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index 3efa9536cc..5ba4155047 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -271,6 +271,15 @@ STRUCT(rtc_wkalrm, TYPE_CHAR, /* pending */ MK_STRUCT(STRUCT_rtc_time)) /* time */ +STRUCT(rtc_pll_info, + TYPE_INT, /* pll_ctrl */ + TYPE_INT, /* pll_value */ + TYPE_INT, /* pll_max */ + TYPE_INT, /* pll_min */ + TYPE_INT, /* pll_posmult */ + TYPE_INT, /* pll_negmult */ + TYPE_LONG) /* pll_clock */ + STRUCT(blkpg_ioctl_arg, TYPE_INT, /* op */ TYPE_INT, /* flags */ |