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| author | Matt Fleming <matt.fleming@intel.com> | 2015-08-06 15:46:24 +0300 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2015-08-11 17:03:21 +0300 |
| commit | 420b54de25828c45f3fc1f12d52d9657f5e90a53 (patch) | |
| tree | 4a7b05b69ebabf2ef477cb39f29b9f747246b80e /include/linux/platform_data | |
| parent | bc0195aad0daa2ad5b0d76cce22b167bc3435590 (diff) | |
| download | linux-420b54de25828c45f3fc1f12d52d9657f5e90a53.tar.xz | |
mfd: watchdog: iTCO_wdt: Expose watchdog properties using platform data
Intel Sunrisepoint (Skylake PCH) has the iTCO watchdog accessible across
the SMBus, unlike previous generations of PCH/ICH where it was on the
LPC bus. Because it's on the SMBus, it doesn't make sense to pass around
a 'struct lpc_ich_info', and leaking the type of bus into the iTCO
watchdog driver is kind of backwards anyway.
This change introduces a new 'struct itco_wdt_platform_data' for use
inside the iTCO watchdog driver and by the upcoming Intel Sunrisepoint
code, which neatly avoids having to include lpc_ich headers in the i801
i2c driver.
This change is overdue because lpc_ich_info has already found its way
into other TCO watchdog users, notably the intel_pmc_ipc driver where
the watchdog actually isn't on the LPC bus as far as I can see.
A simple translation layer is provided for converting from the existing
'struct lpc_ich_info' inside the lpc_ich mfd driver.
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Acked-by: Darren Hart <dvhart@linux.intel.com> [drivers/x86 refactoring]
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'include/linux/platform_data')
| -rw-r--r-- | include/linux/platform_data/itco_wdt.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/platform_data/itco_wdt.h b/include/linux/platform_data/itco_wdt.h new file mode 100644 index 000000000000..f16542c77ff7 --- /dev/null +++ b/include/linux/platform_data/itco_wdt.h @@ -0,0 +1,19 @@ +/* + * Platform data for the Intel TCO Watchdog + */ + +#ifndef _ITCO_WDT_H_ +#define _ITCO_WDT_H_ + +/* Watchdog resources */ +#define ICH_RES_IO_TCO 0 +#define ICH_RES_IO_SMI 1 +#define ICH_RES_MEM_OFF 2 +#define ICH_RES_MEM_GCS_PMC 0 + +struct itco_wdt_platform_data { + char name[32]; + unsigned int version; +}; + +#endif /* _ITCO_WDT_H_ */ |