xref: /openbmc/linux/include/linux/mfd/intel_pmc_bxt.h (revision 25f1ca31)

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef MFD_INTEL_PMC_BXT_H
#define MFD_INTEL_PMC_BXT_H

/* GCR reg offsets from GCR base */
#define PMC_GCR_PMC_CFG_REG		0x08
#define PMC_GCR_TELEM_DEEP_S0IX_REG	0x78
#define PMC_GCR_TELEM_SHLW_S0IX_REG	0x80

/* PMC_CFG_REG bit masks */
#define PMC_CFG_NO_REBOOT_EN		BIT(4)

/**
 * struct intel_pmc_dev - Intel PMC device structure
 * @dev: Pointer to the parent PMC device
 * @scu: Pointer to the SCU IPC device data structure
 * @gcr_mem_base: Virtual base address of GCR (Global Configuration Registers)
 * @gcr_lock: Lock used to serialize access to GCR registers
 * @telem_base: Pointer to telemetry SSRAM base resource or %NULL if not
 *		available
 */
struct intel_pmc_dev {
	struct device *dev;
	struct intel_scu_ipc_dev *scu;
	void __iomem *gcr_mem_base;
	spinlock_t gcr_lock;
	struct resource *telem_base;
};

#if IS_ENABLED(CONFIG_MFD_INTEL_PMC_BXT)
int intel_pmc_gcr_read64(struct intel_pmc_dev *pmc, u32 offset, u64 *data);
int intel_pmc_gcr_update(struct intel_pmc_dev *pmc, u32 offset, u32 mask, u32 val);
int intel_pmc_s0ix_counter_read(struct intel_pmc_dev *pmc, u64 *data);
#else
static inline int intel_pmc_gcr_read64(struct intel_pmc_dev *pmc, u32 offset,
				       u64 *data)
{
	return -ENOTSUPP;
}

static inline int intel_pmc_gcr_update(struct intel_pmc_dev *pmc, u32 offset,
				       u32 mask, u32 val)
{
	return -ENOTSUPP;
}

static inline int intel_pmc_s0ix_counter_read(struct intel_pmc_dev *pmc, u64 *data)
{
	return -ENOTSUPP;
}
#endif

#endif /* MFD_INTEL_PMC_BXT_H */