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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2017 Intel Corporation.
* Take from coreboot project file of the same name
*/
#ifndef _ASM_ARCH_LPC_H
#define _ASM_ARCH_LPC_H
#include <linux/bitops.h>
#define LPC_SERIRQ_CTL 0x64
#define LPC_SCNT_EN BIT(7)
#define LPC_SCNT_MODE BIT(6)
#define LPC_IO_DECODE 0x80
#define LPC_IOD_COMA_RANGE (0 << 0) /* 0x3F8 - 0x3FF COMA*/
#define LPC_IOD_COMB_RANGE (1 << 4) /* 0x2F8 - 0x2FF COMB*/
/*
* Use IO_<peripheral>_<IO port> style macros defined in lpc_lib.h
* to enable decoding of I/O locations for a peripheral
*/
#define LPC_IO_ENABLES 0x82
#define LPC_GENERIC_IO_RANGE(n) ((((n) & 0x3) * 4) + 0x84)
#define LPC_LGIR_AMASK_MASK (0xfc << 16)
#define LPC_LGIR_ADDR_MASK 0xfffc
#define LPC_LGIR_EN BIT(0)
#define LPC_LGIR_MAX_WINDOW_SIZE 256
#define LPC_GENERIC_MEM_RANGE 0x98
#define LPC_LGMR_ADDR_MASK 0xffff0000
#define LPC_LGMR_EN BIT(0)
#define LPC_LGMR_WINDOW_SIZE (64 * KiB)
#define LPC_BIOS_CNTL 0xdc
#define LPC_BC_BILD BIT(7)
#define LPC_BC_LE BIT(1)
#define LPC_BC_EISS BIT(5)
#define LPC_PCCTL 0xE0 /* PCI Clock Control */
#define LPC_PCCTL_CLKRUN_EN BIT(0)
/*
* IO decode enable macros are in the format IO_<peripheral>_<IO port>.
* For example, to open ports 0x60, 0x64 for the keyboard controller,
* use IOE_KBC_60_64 macro. For IOE_ macros that do not specify a port range,
* the port range is selectable via the IO decodes register.
*/
#define LPC_IOE_EC_4E_4F BIT(13)
#define LPC_IOE_SUPERIO_2E_2F BIT(12)
#define LPC_IOE_EC_62_66 BIT(11)
#define LPC_IOE_KBC_60_64 BIT(10)
#define LPC_IOE_HGE_208 BIT(9)
#define LPC_IOE_LGE_200 BIT(8)
#define LPC_IOE_FDD_EN BIT(3)
#define LPC_IOE_LPT_EN BIT(2)
#define LPC_IOE_COMB_EN BIT(1)
#define LPC_IOE_COMA_EN BIT(0)
#define LPC_NUM_GENERIC_IO_RANGES 4
#define LPC_IO_ENABLES 0x82
/**
* lpc_enable_fixed_io_ranges() - enable the fixed I/O ranges
*
* @io_enables: Mask of things to enable (LPC_IOE_.)
*/
void lpc_enable_fixed_io_ranges(uint io_enables);
/**
* lpc_open_pmio_window() - Open an IO port range
*
* @base: Base I/O address (e.g. 0x800)
* @size: Size of window (e.g. 0x100)
* @return 0 if OK, -ENOSPC if there are no more windows available, -EALREADY
* if already set up
*/
int lpc_open_pmio_window(uint base, uint size);
/**
* lpc_io_setup_comm_a_b() - Set up basic serial UARTs
*
* Set up the LPC to handle I/O to the COMA/COMB serial UART addresses
* 2f8-2ff and 3f8-3ff.
*/
void lpc_io_setup_comm_a_b(void);
#endif
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