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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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25f1ca31e2
This driver only creates a bunch of platform devices sharing resources belonging to the PMC device. This is pretty much what MFD subsystem is for so move the driver there, renaming it to intel_pmc_bxt.c which should be more clear what it is. MFD subsystem provides nice helper APIs for subdevice creation so convert the driver to use those. Unfortunately the ACPI device includes separate resources for most of the subdevices so we cannot simply call mfd_add_devices() to create all of them but instead we need to call it separately for each device. The new MFD driver continues to expose two sysfs attributes that allow userspace to send IPC commands to the PMC/SCU to avoid breaking any existing applications that may use these. Generally this is bad idea so document this in the ABI documentation. 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>
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Intel SOC Telemetry Driver Header File
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* Copyright (C) 2015, Intel Corporation.
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* All Rights Reserved.
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*/
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#ifndef INTEL_TELEMETRY_H
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#define INTEL_TELEMETRY_H
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#define TELEM_MAX_EVENTS_SRAM 28
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#define TELEM_MAX_OS_ALLOCATED_EVENTS 20
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#include <asm/intel_scu_ipc.h>
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enum telemetry_unit {
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TELEM_PSS = 0,
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TELEM_IOSS,
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TELEM_UNIT_NONE
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};
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struct telemetry_evtlog {
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u32 telem_evtid;
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u64 telem_evtlog;
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};
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struct telemetry_evtconfig {
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/* Array of Event-IDs to Enable */
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u32 *evtmap;
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/* Number of Events (<29) in evtmap */
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u8 num_evts;
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/* Sampling period */
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u8 period;
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};
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struct telemetry_evtmap {
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const char *name;
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u32 evt_id;
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};
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struct telemetry_unit_config {
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struct telemetry_evtmap *telem_evts;
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void __iomem *regmap;
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u8 ssram_evts_used;
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u8 curr_period;
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u8 max_period;
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u8 min_period;
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};
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struct telemetry_plt_config {
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struct telemetry_unit_config pss_config;
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struct telemetry_unit_config ioss_config;
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struct mutex telem_trace_lock;
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struct mutex telem_lock;
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struct intel_pmc_dev *pmc;
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struct intel_scu_ipc_dev *scu;
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bool telem_in_use;
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};
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struct telemetry_core_ops {
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int (*get_sampling_period)(u8 *pss_min_period, u8 *pss_max_period,
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u8 *ioss_min_period, u8 *ioss_max_period);
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int (*get_eventconfig)(struct telemetry_evtconfig *pss_evtconfig,
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struct telemetry_evtconfig *ioss_evtconfig,
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int pss_len, int ioss_len);
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int (*update_events)(struct telemetry_evtconfig pss_evtconfig,
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struct telemetry_evtconfig ioss_evtconfig);
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int (*set_sampling_period)(u8 pss_period, u8 ioss_period);
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int (*get_trace_verbosity)(enum telemetry_unit telem_unit,
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u32 *verbosity);
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int (*set_trace_verbosity)(enum telemetry_unit telem_unit,
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u32 verbosity);
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int (*raw_read_eventlog)(enum telemetry_unit telem_unit,
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struct telemetry_evtlog *evtlog,
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int len, int log_all_evts);
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int (*read_eventlog)(enum telemetry_unit telem_unit,
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struct telemetry_evtlog *evtlog,
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int len, int log_all_evts);
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int (*add_events)(u8 num_pss_evts, u8 num_ioss_evts,
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u32 *pss_evtmap, u32 *ioss_evtmap);
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int (*reset_events)(void);
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};
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int telemetry_set_pltdata(const struct telemetry_core_ops *ops,
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struct telemetry_plt_config *pltconfig);
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int telemetry_clear_pltdata(void);
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struct telemetry_plt_config *telemetry_get_pltdata(void);
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int telemetry_get_evtname(enum telemetry_unit telem_unit,
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const char **name, int len);
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int telemetry_update_events(struct telemetry_evtconfig pss_evtconfig,
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struct telemetry_evtconfig ioss_evtconfig);
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int telemetry_add_events(u8 num_pss_evts, u8 num_ioss_evts,
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u32 *pss_evtmap, u32 *ioss_evtmap);
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int telemetry_reset_events(void);
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int telemetry_get_eventconfig(struct telemetry_evtconfig *pss_config,
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struct telemetry_evtconfig *ioss_config,
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int pss_len, int ioss_len);
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int telemetry_read_events(enum telemetry_unit telem_unit,
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struct telemetry_evtlog *evtlog, int len);
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int telemetry_raw_read_events(enum telemetry_unit telem_unit,
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struct telemetry_evtlog *evtlog, int len);
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int telemetry_read_eventlog(enum telemetry_unit telem_unit,
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struct telemetry_evtlog *evtlog, int len);
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int telemetry_raw_read_eventlog(enum telemetry_unit telem_unit,
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struct telemetry_evtlog *evtlog, int len);
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int telemetry_get_sampling_period(u8 *pss_min_period, u8 *pss_max_period,
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u8 *ioss_min_period, u8 *ioss_max_period);
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int telemetry_set_sampling_period(u8 pss_period, u8 ioss_period);
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int telemetry_set_trace_verbosity(enum telemetry_unit telem_unit,
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u32 verbosity);
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int telemetry_get_trace_verbosity(enum telemetry_unit telem_unit,
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u32 *verbosity);
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#endif /* INTEL_TELEMETRY_H */
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