diff options
Diffstat (limited to 'arch/x86/kernel/acpi/cppc_msr.c')
| -rw-r--r-- | arch/x86/kernel/acpi/cppc_msr.c | 49 | 
1 files changed, 0 insertions, 49 deletions
| diff --git a/arch/x86/kernel/acpi/cppc_msr.c b/arch/x86/kernel/acpi/cppc_msr.c deleted file mode 100644 index b961de569e7e..000000000000 --- a/arch/x86/kernel/acpi/cppc_msr.c +++ /dev/null @@ -1,49 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * cppc_msr.c:  MSR Interface for CPPC - * Copyright (c) 2016, Intel Corporation. - */ - -#include <acpi/cppc_acpi.h> -#include <asm/msr.h> - -/* Refer to drivers/acpi/cppc_acpi.c for the description of functions */ - -bool cpc_ffh_supported(void) -{ -	return true; -} - -int cpc_read_ffh(int cpunum, struct cpc_reg *reg, u64 *val) -{ -	int err; - -	err = rdmsrl_safe_on_cpu(cpunum, reg->address, val); -	if (!err) { -		u64 mask = GENMASK_ULL(reg->bit_offset + reg->bit_width - 1, -				       reg->bit_offset); - -		*val &= mask; -		*val >>= reg->bit_offset; -	} -	return err; -} - -int cpc_write_ffh(int cpunum, struct cpc_reg *reg, u64 val) -{ -	u64 rd_val; -	int err; - -	err = rdmsrl_safe_on_cpu(cpunum, reg->address, &rd_val); -	if (!err) { -		u64 mask = GENMASK_ULL(reg->bit_offset + reg->bit_width - 1, -				       reg->bit_offset); - -		val <<= reg->bit_offset; -		val &= mask; -		rd_val &= ~mask; -		rd_val |= val; -		err = wrmsrl_safe_on_cpu(cpunum, reg->address, rd_val); -	} -	return err; -} |