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u-boot-brain/arch/x86/include/asm/intel_pinctrl_defs.h
Simon Glass 74749f1e84 x86: Add a generic Intel pinctrl driver 
Recent Intel SoCs share a pinctrl mechanism with many common elements. Add
an implementation of this core functionality, allowing SoC-specific
drivers to avoid adding common code.

As well as a pinctrl driver this provides a GPIO driver based on the same
code.

Once other SoCs use this driver we may consider moving more properties to
the device tree (e.g. the community info and pad definitions).

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-15 11:44:25 +08:00

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015-2016 Intel Corp.
* Copyright 2019 Google LLC
*
* Modified from coreboot gpio_defs.h
*/
#ifndef _ASM_INTEL_PINCTRL_DEFS_H_
#define _ASM_INTEL_PINCTRL_DEFS_H_
/* This file is included by device trees, so avoid BIT() macros */
#define PAD_CFG0_TX_STATE_BIT 0
#define PAD_CFG0_TX_STATE (1 << PAD_CFG0_TX_STATE_BIT)
#define PAD_CFG0_RX_STATE_BIT 1
#define PAD_CFG0_RX_STATE (1 << PAD_CFG0_RX_STATE_BIT)
#define PAD_CFG0_TX_DISABLE (1 << 8)
#define PAD_CFG0_RX_DISABLE (1 << 9)
#define PAD_CFG0_MODE_SHIFT 10
#define PAD_CFG0_MODE_MASK (7 << PAD_CFG0_MODE_SHIFT)
#define PAD_CFG0_MODE_GPIO (0 << PAD_CFG0_MODE_SHIFT)
#define PAD_CFG0_MODE_NF1 (1 << PAD_CFG0_MODE_SHIFT)
#define PAD_CFG0_MODE_NF2 (2 << PAD_CFG0_MODE_SHIFT)
#define PAD_CFG0_MODE_NF3 (3 << PAD_CFG0_MODE_SHIFT)
#define PAD_CFG0_MODE_NF4 (4 << PAD_CFG0_MODE_SHIFT)
#define PAD_CFG0_MODE_NF5 (5 << PAD_CFG0_MODE_SHIFT)
#define PAD_CFG0_MODE_NF6 (6 << PAD_CFG0_MODE_SHIFT)
#define PAD_CFG0_ROUTE_MASK (0xf << 17)
#define PAD_CFG0_ROUTE_NMI (1 << 17)
#define PAD_CFG0_ROUTE_SMI (1 << 18)
#define PAD_CFG0_ROUTE_SCI (1 << 19)
#define PAD_CFG0_ROUTE_IOAPIC (1 << 20)
#define PAD_CFG0_RXTENCFG_MASK (3 << 21)
#define PAD_CFG0_RXINV_MASK (1 << 23)
#define PAD_CFG0_RX_POL_INVERT (1 << 23)
#define PAD_CFG0_RX_POL_NONE (0 << 23)
#define PAD_CFG0_PREGFRXSEL (1 << 24)
#define PAD_CFG0_TRIG_MASK (3 << 25)
#define PAD_CFG0_TRIG_LEVEL (0 << 25)
#define PAD_CFG0_TRIG_EDGE_SINGLE (1 << 25) /* controlled by RX_INVERT*/
#define PAD_CFG0_TRIG_OFF (2 << 25)
#define PAD_CFG0_TRIG_EDGE_BOTH (3 << 25)
#define PAD_CFG0_RXRAW1_MASK (1 << 28)
#define PAD_CFG0_RXPADSTSEL_MASK (1 << 29)
#define PAD_CFG0_RESET_MASK (3 << 30)
#define PAD_CFG0_LOGICAL_RESET_PWROK (0U << 30)
#define PAD_CFG0_LOGICAL_RESET_DEEP (1U << 30)
#define PAD_CFG0_LOGICAL_RESET_PLTRST (2U << 30)
#define PAD_CFG0_LOGICAL_RESET_RSMRST (3U << 30)
/*
* Use the fourth bit in IntSel field to indicate gpio ownership. This field is
* RO and hence not used during gpio configuration.
*/
#define PAD_CFG1_GPIO_DRIVER (0x1 << 4)
#define PAD_CFG1_IRQ_MASK (0xff << 0)
#define PAD_CFG1_IOSTERM_MASK (0x3 << 8)
#define PAD_CFG1_IOSTERM_SAME (0x0 << 8)
#define PAD_CFG1_IOSTERM_DISPUPD (0x1 << 8)
#define PAD_CFG1_IOSTERM_ENPD (0x2 << 8)
#define PAD_CFG1_IOSTERM_ENPU (0x3 << 8)
#define PAD_CFG1_PULL_MASK (0xf << 10)
#define PAD_CFG1_PULL_NONE (0x0 << 10)
#define PAD_CFG1_PULL_DN_5K (0x2 << 10)
#define PAD_CFG1_PULL_DN_20K (0x4 << 10)
#define PAD_CFG1_PULL_UP_1K (0x9 << 10)
#define PAD_CFG1_PULL_UP_5K (0xa << 10)
#define PAD_CFG1_PULL_UP_2K (0xb << 10)
#define PAD_CFG1_PULL_UP_20K (0xc << 10)
#define PAD_CFG1_PULL_UP_667 (0xd << 10)
#define PAD_CFG1_PULL_NATIVE (0xf << 10)
/* Tx enabled driving last value driven, Rx enabled */
#define PAD_CFG1_IOSSTATE_TX_LAST_RXE (0x0 << 14)
/*
* Tx enabled driving 0, Rx disabled and Rx driving 0 back to its controller
* internally
*/
#define PAD_CFG1_IOSSTATE_TX0_RX_DCR_X0 (0x1 << 14)
/*
* Tx enabled driving 0, Rx disabled and Rx driving 1 back to its controller
* internally
*/
#define PAD_CFG1_IOSSTATE_TX0_RX_DCR_X1 (0x2 << 14)
/*
* Tx enabled driving 1, Rx disabled and Rx driving 0 back to its controller
* internally
*/
#define PAD_CFG1_IOSSTATE_TX1_RX_DCR_X0 (0x3 << 14)
/*
* Tx enabled driving 1, Rx disabled and Rx driving 1 back to its controller
* internally
*/
#define PAD_CFG1_IOSSTATE_TX1_RX_DCR_X1 (0x4 << 14)
/* Tx enabled driving 0, Rx enabled */
#define PAD_CFG1_IOSSTATE_TX0_RXE (0x5 << 14)
/* Tx enabled driving 1, Rx enabled */
#define PAD_CFG1_IOSSTATE_TX1_RXE (0x6 << 14)
/* Hi-Z, Rx driving 0 back to its controller internally */
#define PAD_CFG1_IOSSTATE_HIZCRX0 (0x7 << 14)
/* Hi-Z, Rx driving 1 back to its controller internally */
#define PAD_CFG1_IOSSTATE_HIZCRX1 (0x8 << 14)
/* Tx disabled, Rx enabled */
#define PAD_CFG1_IOSSTATE_TXD_RXE (0x9 << 14)
#define PAD_CFG1_IOSSTATE_IGNORE (0xf << 14) /* Ignore Iostandby */
/* mask to extract Iostandby bits */
#define PAD_CFG1_IOSSTATE_MASK (0xf << 14)
#define PAD_CFG1_IOSSTATE_SHIFT 14 /* set Iostandby bits [17:14] */
#define PAD_CFG2_DEBEN 1
/* Debounce Duration = (2 ^ PAD_CFG2_DEBOUNCE_x_RTC) * RTC clock duration */
#define PAD_CFG2_DEBOUNCE_8_RTC (0x3 << 1)
#define PAD_CFG2_DEBOUNCE_16_RTC (0x4 << 1)
#define PAD_CFG2_DEBOUNCE_32_RTC (0x5 << 1)
#define PAD_CFG2_DEBOUNCE_64_RTC (0x6 << 1)
#define PAD_CFG2_DEBOUNCE_128_RTC (0x7 << 1)
#define PAD_CFG2_DEBOUNCE_256_RTC (0x8 << 1)
#define PAD_CFG2_DEBOUNCE_512_RTC (0x9 << 1)
#define PAD_CFG2_DEBOUNCE_1K_RTC (0xa << 1)
#define PAD_CFG2_DEBOUNCE_2K_RTC (0xb << 1)
#define PAD_CFG2_DEBOUNCE_4K_RTC (0xc << 1)
#define PAD_CFG2_DEBOUNCE_8K_RTC (0xd << 1)
#define PAD_CFG2_DEBOUNCE_16K_RTC (0xe << 1)
#define PAD_CFG2_DEBOUNCE_32K_RTC (0xf << 1)
#define PAD_CFG2_DEBOUNCE_MASK 0x1f
/* voltage tolerance 0=3.3V default 1=1.8V tolerant */
#if IS_ENABLED(INTEL_PINCTRL_IOSTANDBY)
#define PAD_CFG1_TOL_MASK (0x1 << 25)
#define PAD_CFG1_TOL_1V8 (0x1 << 25)
#endif
#define PAD_FUNC(value) PAD_CFG0_MODE_##value
#define PAD_RESET(value) PAD_CFG0_LOGICAL_RESET_##value
#define PAD_PULL(value) PAD_CFG1_PULL_##value
#define PAD_IOSSTATE(value) PAD_CFG1_IOSSTATE_##value
#define PAD_IOSTERM(value) PAD_CFG1_IOSTERM_##value
#define PAD_IRQ_CFG(route, trig, inv) \
(PAD_CFG0_ROUTE_##route | \
PAD_CFG0_TRIG_##trig | \
PAD_CFG0_RX_POL_##inv)
#if IS_ENABLED(INTEL_PINCTRL_DUAL_ROUTE_SUPPORT)
#define PAD_IRQ_CFG_DUAL_ROUTE(route1, route2, trig, inv) \
(PAD_CFG0_ROUTE_##route1 | \
PAD_CFG0_ROUTE_##route2 | \
PAD_CFG0_TRIG_##trig | \
PAD_CFG0_RX_POL_##inv)
#endif /* CONFIG_INTEL_PINCTRL_DUAL_ROUTE_SUPPORT */
#define _PAD_CFG_STRUCT(__pad, __config0, __config1) \
__pad(__config0) (__config1)
/* Native function configuration */
#define PAD_CFG_NF(pad, pull, rst, func) \
_PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \
PAD_IOSSTATE(TX_LAST_RXE))
#if IS_ENABLED(CONFIG_INTEL_GPIO_PADCFG_PADTOL)
/*
* Native 1.8V tolerant pad, only applies to some pads like I2C/I2S. Not
* applicable to all SOCs. Refer EDS.
*/
#define PAD_CFG_NF_1V8(pad, pull, rst, func) \
_PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) |\
PAD_IOSSTATE(TX_LAST_RXE) | PAD_CFG1_TOL_1V8)
#endif
/* Native function configuration for standby state */
#define PAD_CFG_NF_IOSSTATE(pad, pull, rst, func, iosstate) \
_PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \
PAD_IOSSTATE(iosstate))
/*
* Native function configuration for standby state, also configuring iostandby
* as masked
*/
#define PAD_CFG_NF_IOSTANDBY_IGNORE(pad, pull, rst, func) \
_PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \
PAD_IOSSTATE(IGNORE))
/*
* Native function configuration for standby state, also configuring iosstate
* and iosterm
*/
#define PAD_CFG_NF_IOSSTATE_IOSTERM(pad, pull, rst, func, iosstate, iosterm) \
_PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \
PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm))
/* General purpose output, no pullup/down */
#define PAD_CFG_GPO(pad, val, rst) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_RX_DISABLE | !!val, \
PAD_PULL(NONE) | PAD_IOSSTATE(TX_LAST_RXE))
/* General purpose output, with termination specified */
#define PAD_CFG_TERM_GPO(pad, val, pull, rst) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_RX_DISABLE | !!val, \
PAD_PULL(pull) | PAD_IOSSTATE(TX_LAST_RXE))
/* General purpose output, no pullup/down */
#define PAD_CFG_GPO_GPIO_DRIVER(pad, val, rst, pull) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_RX_DISABLE | !!val, \
PAD_PULL(pull) | PAD_IOSSTATE(TX_LAST_RXE) | \
PAD_CFG1_GPIO_DRIVER)
/* General purpose output */
#define PAD_CFG_GPO_IOSSTATE_IOSTERM(pad, val, rst, pull, iosstate, ioterm) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_RX_DISABLE | !!val, \
PAD_PULL(pull) | PAD_IOSSTATE(iosstate) | PAD_IOSTERM(ioterm))
/* General purpose input */
#define PAD_CFG_GPI(pad, pull, rst) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE, \
PAD_PULL(pull) | PAD_IOSSTATE(TXD_RXE))
/* General purpose input. The following macro sets the
* Host Software Pad Ownership to GPIO Driver mode.
*/
#define PAD_CFG_GPI_GPIO_DRIVER(pad, pull, rst) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE, \
PAD_PULL(pull) | PAD_CFG1_GPIO_DRIVER | PAD_IOSSTATE(TXD_RXE))
#define PAD_CFG_GPIO_DRIVER_HI_Z(pad, pull, rst, iosstate, iosterm) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_CFG0_RX_DISABLE, \
PAD_PULL(pull) | PAD_CFG1_GPIO_DRIVER | \
PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm))
#define PAD_CFG_GPIO_HI_Z(pad, pull, rst, iosstate, iosterm) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_CFG0_RX_DISABLE, PAD_PULL(pull) | \
PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm))
/* GPIO Interrupt */
#define PAD_CFG_GPI_INT(pad, pull, rst, trig) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_CFG0_TRIG_##trig | PAD_CFG0_RX_POL_NONE, \
PAD_PULL(pull) | PAD_CFG1_GPIO_DRIVER | PAD_IOSSTATE(TXD_RXE))
/*
* No Connect configuration for unused pad.
* Both TX and RX are disabled. RX disabling is done to avoid unnecessary
* setting of GPI_STS.
*/
#define PAD_NC(pad, pull) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(DEEP) | \
PAD_CFG0_TX_DISABLE | PAD_CFG0_RX_DISABLE, \
PAD_PULL(pull) | PAD_IOSSTATE(TXD_RXE))
/* General purpose input, routed to APIC */
#define PAD_CFG_GPI_APIC(pad, pull, rst, trig, inv) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG(IOAPIC, trig, inv), PAD_PULL(pull) | \
PAD_IOSSTATE(TXD_RXE))
/* General purpose input, routed to APIC - with IOStandby Config*/
#define PAD_CFG_GPI_APIC_IOS(pad, pull, rst, trig, inv, iosstate, iosterm) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG(IOAPIC, trig, inv), PAD_PULL(pull) | \
PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm))
/*
* The following APIC macros assume the APIC will handle the filtering
* on its own end. One just needs to pass an active high message into the
* ITSS.
*/
#define PAD_CFG_GPI_APIC_LOW(pad, pull, rst) \
PAD_CFG_GPI_APIC(pad, pull, rst, LEVEL, INVERT)
#define PAD_CFG_GPI_APIC_HIGH(pad, pull, rst) \
PAD_CFG_GPI_APIC(pad, pull, rst, LEVEL, NONE)
#define PAD_CFG_GPI_APIC_EDGE_LOW(pad, pull, rst) \
PAD_CFG_GPI_APIC(pad, pull, rst, EDGE_SINGLE, INVERT)
/* General purpose input, routed to SMI */
#define PAD_CFG_GPI_SMI(pad, pull, rst, trig, inv) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG(SMI, trig, inv), PAD_PULL(pull) | \
PAD_IOSSTATE(TXD_RXE))
/* General purpose input, routed to SMI */
#define PAD_CFG_GPI_SMI_IOS(pad, pull, rst, trig, inv, iosstate, iosterm) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG(SMI, trig, inv), PAD_PULL(pull) | \
PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm))
#define PAD_CFG_GPI_SMI_LOW(pad, pull, rst, trig) \
PAD_CFG_GPI_SMI(pad, pull, rst, trig, INVERT)
#define PAD_CFG_GPI_SMI_HIGH(pad, pull, rst, trig) \
PAD_CFG_GPI_SMI(pad, pull, rst, trig, NONE)
/* General purpose input, routed to SCI */
#define PAD_CFG_GPI_SCI(pad, pull, rst, trig, inv) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG(SCI, trig, inv), PAD_PULL(pull) | \
PAD_IOSSTATE(TXD_RXE))
/* General purpose input, routed to SCI */
#define PAD_CFG_GPI_SCI_IOS(pad, pull, rst, trig, inv, iosstate, iosterm) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG(SCI, trig, inv), PAD_PULL(pull) | \
PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm))
#define PAD_CFG_GPI_SCI_LOW(pad, pull, rst, trig) \
PAD_CFG_GPI_SCI(pad, pull, rst, trig, INVERT)
#define PAD_CFG_GPI_SCI_HIGH(pad, pull, rst, trig) \
PAD_CFG_GPI_SCI(pad, pull, rst, trig, NONE)
#define PAD_CFG_GPI_SCI_DEBEN(pad, pull, rst, trig, inv, dur) \
_PAD_CFG_STRUCT_3(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG(SCI, trig, inv), PAD_PULL(pull) | \
PAD_IOSSTATE(TXD_RXE), PAD_CFG2_DEBEN | PAD_CFG2_##dur)
#define PAD_CFG_GPI_SCI_LOW_DEBEN(pad, pull, rst, trig, dur) \
PAD_CFG_GPI_SCI_DEBEN(pad, pull, rst, trig, INVERT, dur)
#define PAD_CFG_GPI_SCI_HIGH_DEBEN(pad, pull, rst, trig, dur) \
PAD_CFG_GPI_SCI_DEBEN(pad, pull, rst, trig, NONE, dur)
/* General purpose input, routed to NMI */
#define PAD_CFG_GPI_NMI(pad, pull, rst, trig, inv) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG(NMI, trig, inv), PAD_PULL(pull) | \
PAD_IOSSTATE(TXD_RXE))
#if IS_ENABLED(INTEL_PINCTRL_DUAL_ROUTE_SUPPORT)
/* GPI, GPIO Driver, SCI interrupt */
#define PAD_CFG_GPI_GPIO_DRIVER_SCI(pad, pull, rst, trig, inv) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG(SCI, trig, inv), \
PAD_PULL(pull) | PAD_CFG1_GPIO_DRIVER | PAD_IOSSTATE(TXD_RXE))
#define PAD_CFG_GPI_DUAL_ROUTE(pad, pull, rst, trig, inv, route1, route2) \
_PAD_CFG_STRUCT(pad, \
PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \
PAD_IRQ_CFG_DUAL_ROUTE(route1, route2, trig, inv), \
PAD_PULL(pull) | PAD_IOSSTATE(TXD_RXE))
#define PAD_CFG_GPI_IRQ_WAKE(pad, pull, rst, trig, inv) \
PAD_CFG_GPI_DUAL_ROUTE(pad, pull, rst, trig, inv, IOAPIC, SCI)
#endif /* CONFIG_INTEL_PINCTRL_DUAL_ROUTE_SUPPORT */
#endif /* _ASM_INTEL_PINCTRL_DEFS_H_ */
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