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platform/x86: intel_telemetry: Add telemetry_get_pltdata()

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Add new function that allows telemetry modules to get pointer to the
platform specific configuration. This is needed to allow the telemetry
debugfs module to fetch PMC IPC instance in the subsequent patch.

This also allows us to replace telemetry_pltconfig_valid() with
telemetry_get_pltdata() as well.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Mika Westerberg 2020-04-16 11:15:50 +03:00 committed by Lee Jones
parent b8da68f44f
commit 0759a8730c
3 changed files with 8 additions and 14 deletions
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2
arch/x86/include/asm/intel_telemetry.h
View File

@ -95,7 +95,7 @@ int telemetry_set_pltdata(const struct telemetry_core_ops *ops,
int telemetry_clear_pltdata(void);
int telemetry_pltconfig_valid(void);
struct telemetry_plt_config *telemetry_get_pltdata(void);
int telemetry_get_evtname(enum telemetry_unit telem_unit,
const char **name, int len);

17
drivers/platform/x86/intel_telemetry_core.c
View File

@ -353,21 +353,16 @@ int telemetry_clear_pltdata(void)
EXPORT_SYMBOL_GPL(telemetry_clear_pltdata);
/**
* telemetry_pltconfig_valid() - Checkif platform config is valid
* telemetry_get_pltdata() - Return telemetry platform config
*
* Usage by other than telemetry module is invalid
*
* Return: 0 success, < 0 for failure
* May be used by other telemetry modules to get platform specific
* configuration.
*/
int telemetry_pltconfig_valid(void)
struct telemetry_plt_config *telemetry_get_pltdata(void)
{
if (telm_core_conf.plt_config)
return 0;
else
return -EINVAL;
return telm_core_conf.plt_config;
}
EXPORT_SYMBOL_GPL(telemetry_pltconfig_valid);
EXPORT_SYMBOL_GPL(telemetry_get_pltdata);
static inline int telemetry_get_pssevtname(enum telemetry_unit telem_unit,
const char **name, int len)

3
drivers/platform/x86/intel_telemetry_debugfs.c
View File

@ -910,8 +910,7 @@ static int __init telemetry_debugfs_init(void)
debugfs_conf = (struct telemetry_debugfs_conf *)id->driver_data;
err = telemetry_pltconfig_valid();
if (err < 0) {
if (!telemetry_get_pltdata()) {
pr_info("Invalid pltconfig, ensure IPC1 device is enabled in BIOS\n");
return -ENODEV;
}