// SPDX-License-Identifier: GPL-2.0-only
/*
* lpc_ich.c - LPC interface for Intel ICH
*
* LPC bridge function of the Intel ICH contains many other
* functional units, such as Interrupt controllers, Timers,
* Power Management, System Management, GPIO, RTC, and LPC
* Configuration Registers.
*
* This driver is derived from lpc_sch.
*
* Copyright (c) 2017, 2021-2022 Intel Corporation
* Copyright (c) 2011 Extreme Engineering Solution, Inc.
* Author: Aaron Sierra <asierra@xes-inc.com>
*
* This driver supports the following I/O Controller hubs:
* (See the intel documentation on http://developer.intel.com.)
* document number 290655-003, 290677-014: 82801AA (ICH), 82801AB (ICHO)
* document number 290687-002, 298242-027: 82801BA (ICH2)
* document number 290733-003, 290739-013: 82801CA (ICH3-S)
* document number 290716-001, 290718-007: 82801CAM (ICH3-M)
* document number 290744-001, 290745-025: 82801DB (ICH4)
* document number 252337-001, 252663-008: 82801DBM (ICH4-M)
* document number 273599-001, 273645-002: 82801E (C-ICH)
* document number 252516-001, 252517-028: 82801EB (ICH5), 82801ER (ICH5R)
* document number 300641-004, 300884-013: 6300ESB
* document number 301473-002, 301474-026: 82801F (ICH6)
* document number 313082-001, 313075-006: 631xESB, 632xESB
* document number 307013-003, 307014-024: 82801G (ICH7)
* document number 322896-001, 322897-001: NM10
* document number 313056-003, 313057-017: 82801H (ICH8)
* document number 316972-004, 316973-012: 82801I (ICH9)
* document number 319973-002, 319974-002: 82801J (ICH10)
* document number 322169-001, 322170-003: 5 Series, 3400 Series (PCH)
* document number 320066-003, 320257-008: EP80597 (IICH)
* document number 324645-001, 324646-001: Cougar Point (CPT)
*/
#define pr_fmt(fmt) KBUILD_MODNAME
": " fmt
#include <linux/align.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/acpi.h>
#include <linux/pci.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/mfd/core.h>
#include <linux/mfd/lpc_ich.h>
#include <linux/platform_data/itco_wdt.h>
#include <linux/platform_data/x86/p2sb.h>
#define ACPIBASE
0 x40
#define ACPIBASE_GPE_OFF
0 x28
#define ACPIBASE_GPE_END
0 x2f
#define ACPIBASE_SMI_OFF
0 x30
#define ACPIBASE_SMI_END
0 x33
#define ACPIBASE_PMC_OFF
0 x08
#define ACPIBASE_PMC_END
0 x0c
#define ACPIBASE_TCO_OFF
0 x60
#define ACPIBASE_TCO_END
0 x7f
#define ACPICTRL_PMCBASE
0 x44
#define ACPIBASE_GCS_OFF
0 x3410
#define ACPIBASE_GCS_END
0 x3414
#define SPIBASE_BYT
0 x54
#define SPIBASE_BYT_SZ
512
#define SPIBASE_BYT_EN BIT(
1 )
#define BYT_BCR
0 xfc
#define BYT_BCR_WPD BIT(
0 )
#define SPIBASE_LPT
0 x3800
#define SPIBASE_LPT_SZ
512
#define BCR
0 xdc
#define BCR_WPD BIT(
0 )
#define GPIOBASE_ICH0
0 x58
#define GPIOCTRL_ICH0
0 x5C
#define GPIOBASE_ICH6
0 x48
#define GPIOCTRL_ICH6
0 x4C
#define RCBABASE
0 xf0
#define wdt_io_res(i) wdt_res(
0 , i)
#define wdt_mem_res(i) wdt_res(ICH_RES_MEM_OFF, i)
#define wdt_res(b, i) (&wdt_ich_res[(b) + (i)])
static struct resource wdt_ich_res[] = {
/* ACPI - TCO */
{
.flags = IORESOURCE_IO,
},
/* ACPI - SMI */
{
.flags = IORESOURCE_IO,
},
/* GCS or PMC */
{
.flags = IORESOURCE_MEM,
},
};
static struct resource gpio_ich_res[] = {
/* GPIO */
{
.flags = IORESOURCE_IO,
},
/* ACPI - GPE0 */
{
.flags = IORESOURCE_IO,
},
};
static struct resource intel_spi_res[] = {
{
.flags = IORESOURCE_MEM,
}
};
static struct mfd_cell lpc_ich_wdt_cell = {
.name =
"iTCO_wdt" ,
.num_resources = ARRAY_SIZE(wdt_ich_res),
.resources = wdt_ich_res,
.ignore_resource_conflicts =
true ,
};
static struct mfd_cell lpc_ich_gpio_cell = {
.name =
"gpio_ich" ,
.num_resources = ARRAY_SIZE(gpio_ich_res),
.resources = gpio_ich_res,
.ignore_resource_conflicts =
true ,
};
#define INTEL_GPIO_RESOURCE_SIZE
0 x1000
struct lpc_ich_gpio_info {
const char *hid;
const struct mfd_cell *devices;
size_t nr_devices;
struct resource **resources;
size_t nr_resources;
const resource_size_t *offsets;
};
#define APL_GPIO_NORTH
0
#define APL_GPIO_NORTHWEST
1
#define APL_GPIO_WEST
2
#define APL_GPIO_SOUTHWEST
3
#define APL_GPIO_NR_DEVICES
4
#define APL_GPIO_NR_RESOURCES
4
/* Offset data for Apollo Lake GPIO controllers */
static const resource_size_t apl_gpio_offsets[APL_GPIO_NR_RESOURCES] = {
[APL_GPIO_NORTH] =
0 xc50000,
[APL_GPIO_NORTHWEST] =
0 xc40000,
[APL_GPIO_WEST] =
0 xc70000,
[APL_GPIO_SOUTHWEST] =
0 xc00000,
};
#define APL_GPIO_IRQ
14
static struct resource apl_gpio_resources[APL_GPIO_NR_DEVICES][
2 ] = {
[APL_GPIO_NORTH] = {
DEFINE_RES_MEM(
0 ,
0 ),
DEFINE_RES_IRQ(APL_GPIO_IRQ),
},
[APL_GPIO_NORTHWEST] = {
DEFINE_RES_MEM(
0 ,
0 ),
DEFINE_RES_IRQ(APL_GPIO_IRQ),
},
[APL_GPIO_WEST] = {
DEFINE_RES_MEM(
0 ,
0 ),
DEFINE_RES_IRQ(APL_GPIO_IRQ),
},
[APL_GPIO_SOUTHWEST] = {
DEFINE_RES_MEM(
0 ,
0 ),
DEFINE_RES_IRQ(APL_GPIO_IRQ),
},
};
static struct resource *apl_gpio_mem_resources[APL_GPIO_NR_RESOURCES] = {
[APL_GPIO_NORTH] = &apl_gpio_resources[APL_GPIO_NORTH][
0 ],
[APL_GPIO_NORTHWEST] = &apl_gpio_resources[APL_GPIO_NORTHWEST][
0 ],
[APL_GPIO_WEST] = &apl_gpio_resources[APL_GPIO_WEST][
0 ],
[APL_GPIO_SOUTHWEST] = &apl_gpio_resources[APL_GPIO_SOUTHWEST][
0 ],
};
static const struct mfd_cell apl_gpio_devices[APL_GPIO_NR_DEVICES] = {
[APL_GPIO_NORTH] = {
.name =
"apollolake-pinctrl" ,
.id = APL_GPIO_NORTH,
.num_resources = ARRAY_SIZE(apl_gpio_resources[APL_GPIO_NORTH]),
.resources = apl_gpio_resources[APL_GPIO_NORTH],
.ignore_resource_conflicts =
true ,
},
[APL_GPIO_NORTHWEST] = {
.name =
"apollolake-pinctrl" ,
.id = APL_GPIO_NORTHWEST,
.num_resources = ARRAY_SIZE(apl_gpio_resources[APL_GPIO_NORTHWEST]),
.resources = apl_gpio_resources[APL_GPIO_NORTHWEST],
.ignore_resource_conflicts =
true ,
},
[APL_GPIO_WEST] = {
.name =
"apollolake-pinctrl" ,
.id = APL_GPIO_WEST,
.num_resources = ARRAY_SIZE(apl_gpio_resources[APL_GPIO_WEST]),
.resources = apl_gpio_resources[APL_GPIO_WEST],
.ignore_resource_conflicts =
true ,
},
[APL_GPIO_SOUTHWEST] = {
.name =
"apollolake-pinctrl" ,
.id = APL_GPIO_SOUTHWEST,
.num_resources = ARRAY_SIZE(apl_gpio_resources[APL_GPIO_SOUTHWEST]),
.resources = apl_gpio_resources[APL_GPIO_SOUTHWEST],
.ignore_resource_conflicts =
true ,
},
};
static const struct lpc_ich_gpio_info apl_gpio_info = {
.hid =
"INT3452" ,
.devices = apl_gpio_devices,
.nr_devices = ARRAY_SIZE(apl_gpio_devices),
.resources = apl_gpio_mem_resources,
.nr_resources = ARRAY_SIZE(apl_gpio_mem_resources),
.offsets = apl_gpio_offsets,
};
#define DNV_GPIO_NORTH
0
#define DNV_GPIO_SOUTH
1
#define DNV_GPIO_NR_DEVICES
1
#define DNV_GPIO_NR_RESOURCES
2
/* Offset data for Denverton GPIO controllers */
static const resource_size_t dnv_gpio_offsets[DNV_GPIO_NR_RESOURCES] = {
[DNV_GPIO_NORTH] =
0 xc20000,
[DNV_GPIO_SOUTH] =
0 xc50000,
};
#define DNV_GPIO_IRQ
14
static struct resource dnv_gpio_resources[DNV_GPIO_NR_RESOURCES +
1 ] = {
[DNV_GPIO_NORTH] = DEFINE_RES_MEM(
0 ,
0 ),
[DNV_GPIO_SOUTH] = DEFINE_RES_MEM(
0 ,
0 ),
DEFINE_RES_IRQ(DNV_GPIO_IRQ),
};
static struct resource *dnv_gpio_mem_resources[DNV_GPIO_NR_RESOURCES] = {
[DNV_GPIO_NORTH] = &dnv_gpio_resources[DNV_GPIO_NORTH],
[DNV_GPIO_SOUTH] = &dnv_gpio_resources[DNV_GPIO_SOUTH],
};
static const struct mfd_cell dnv_gpio_devices[DNV_GPIO_NR_DEVICES] = {
{
.name =
"denverton-pinctrl" ,
.num_resources = ARRAY_SIZE(dnv_gpio_resources),
.resources = dnv_gpio_resources,
.ignore_resource_conflicts =
true ,
},
};
static const struct lpc_ich_gpio_info dnv_gpio_info = {
.hid =
"INTC3000" ,
.devices = dnv_gpio_devices,
.nr_devices = ARRAY_SIZE(dnv_gpio_devices),
.resources = dnv_gpio_mem_resources,
.nr_resources = ARRAY_SIZE(dnv_gpio_mem_resources),
.offsets = dnv_gpio_offsets,
};
static struct mfd_cell lpc_ich_spi_cell = {
.name =
"intel-spi" ,
.num_resources = ARRAY_SIZE(intel_spi_res),
.resources = intel_spi_res,
.ignore_resource_conflicts =
true ,
};
/* chipset related info */
enum lpc_chipsets {
LPC_ICH =
0 ,
/* ICH */
LPC_ICH0,
/* ICH0 */
LPC_ICH2,
/* ICH2 */
LPC_ICH2M,
/* ICH2-M */
LPC_ICH3,
/* ICH3-S */
LPC_ICH3M,
/* ICH3-M */
LPC_ICH4,
/* ICH4 */
LPC_ICH4M,
/* ICH4-M */
LPC_CICH,
/* C-ICH */
LPC_ICH5,
/* ICH5 & ICH5R */
LPC_6300ESB,
/* 6300ESB */
LPC_ICH6,
/* ICH6 & ICH6R */
LPC_ICH6M,
/* ICH6-M */
LPC_ICH6W,
/* ICH6W & ICH6RW */
LPC_631XESB,
/* 631xESB/632xESB */
LPC_ICH7,
/* ICH7 & ICH7R */
LPC_ICH7DH,
/* ICH7DH */
LPC_ICH7M,
/* ICH7-M & ICH7-U */
LPC_ICH7MDH,
/* ICH7-M DH */
LPC_NM10,
/* NM10 */
LPC_ICH8,
/* ICH8 & ICH8R */
LPC_ICH8DH,
/* ICH8DH */
LPC_ICH8DO,
/* ICH8DO */
LPC_ICH8M,
/* ICH8M */
LPC_ICH8ME,
/* ICH8M-E */
LPC_ICH9,
/* ICH9 */
LPC_ICH9R,
/* ICH9R */
LPC_ICH9DH,
/* ICH9DH */
LPC_ICH9DO,
/* ICH9DO */
LPC_ICH9M,
/* ICH9M */
LPC_ICH9ME,
/* ICH9M-E */
LPC_ICH10,
/* ICH10 */
LPC_ICH10R,
/* ICH10R */
LPC_ICH10D,
/* ICH10D */
LPC_ICH10DO,
/* ICH10DO */
LPC_PCH,
/* PCH Desktop Full Featured */
LPC_PCHM,
/* PCH Mobile Full Featured */
LPC_P55,
/* P55 */
LPC_PM55,
/* PM55 */
LPC_H55,
/* H55 */
LPC_QM57,
/* QM57 */
LPC_H57,
/* H57 */
LPC_HM55,
/* HM55 */
LPC_Q57,
/* Q57 */
LPC_HM57,
/* HM57 */
LPC_PCHMSFF,
/* PCH Mobile SFF Full Featured */
LPC_QS57,
/* QS57 */
LPC_3400,
/* 3400 */
LPC_3420,
/* 3420 */
LPC_3450,
/* 3450 */
LPC_EP80579,
/* EP80579 */
LPC_CPT,
/* Cougar Point */
LPC_CPTD,
/* Cougar Point Desktop */
LPC_CPTM,
/* Cougar Point Mobile */
LPC_PBG,
/* Patsburg */
LPC_DH89XXCC,
/* DH89xxCC */
LPC_PPT,
/* Panther Point */
LPC_LPT,
/* Lynx Point */
LPC_LPT_LP,
/* Lynx Point-LP */
LPC_WBG,
/* Wellsburg */
LPC_AVN,
/* Avoton SoC */
LPC_BAYTRAIL,
/* Bay Trail SoC */
LPC_COLETO,
/* Coleto Creek */
LPC_WPT_LP,
/* Wildcat Point-LP */
LPC_BRASWELL,
/* Braswell SoC */
LPC_LEWISBURG,
/* Lewisburg */
LPC_9S,
/* 9 Series */
LPC_APL,
/* Apollo Lake SoC */
LPC_DNV,
/* Denverton SoC */
LPC_GLK,
/* Gemini Lake SoC */
LPC_COUGARMOUNTAIN,
/* Cougar Mountain SoC*/
};
struct lpc_ich_priv {
enum lpc_chipsets chipset;
int abase;
/* ACPI base */
int actrl_pbase;
/* ACPI control or PMC base */
int gbase;
/* GPIO base */
int gctrl;
/* GPIO control */
int abase_save;
/* Cached ACPI base value */
int actrl_pbase_save;
/* Cached ACPI control or PMC base value */
int gctrl_save;
/* Cached GPIO control value */
};
static struct lpc_ich_info lpc_chipset_info[] = {
[LPC_ICH] = {
.name =
"ICH" ,
.iTCO_version =
1 ,
},
[LPC_ICH0] = {
.name =
"ICH0" ,
.iTCO_version =
1 ,
},
[LPC_ICH2] = {
.name =
"ICH2" ,
.iTCO_version =
1 ,
},
[LPC_ICH2M] = {
.name =
"ICH2-M" ,
.iTCO_version =
1 ,
},
[LPC_ICH3] = {
.name =
"ICH3-S" ,
.iTCO_version =
1 ,
},
[LPC_ICH3M] = {
.name =
"ICH3-M" ,
.iTCO_version =
1 ,
},
[LPC_ICH4] = {
.name =
"ICH4" ,
.iTCO_version =
1 ,
},
[LPC_ICH4M] = {
.name =
"ICH4-M" ,
.iTCO_version =
1 ,
},
[LPC_CICH] = {
.name =
"C-ICH" ,
.iTCO_version =
1 ,
},
[LPC_ICH5] = {
.name =
"ICH5 or ICH5R" ,
.iTCO_version =
1 ,
},
[LPC_6300ESB] = {
.name =
"6300ESB" ,
.iTCO_version =
1 ,
},
[LPC_ICH6] = {
.name =
"ICH6 or ICH6R" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V6_GPIO,
},
[LPC_ICH6M] = {
.name =
"ICH6-M" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V6_GPIO,
},
[LPC_ICH6W] = {
.name =
"ICH6W or ICH6RW" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V6_GPIO,
},
[LPC_631XESB] = {
.name =
"631xESB/632xESB" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V6_GPIO,
},
[LPC_ICH7] = {
.name =
"ICH7 or ICH7R" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_ICH7DH] = {
.name =
"ICH7DH" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_ICH7M] = {
.name =
"ICH7-M or ICH7-U" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_ICH7MDH] = {
.name =
"ICH7-M DH" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_NM10] = {
.name =
"NM10" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_ICH8] = {
.name =
"ICH8 or ICH8R" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_ICH8DH] = {
.name =
"ICH8DH" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_ICH8DO] = {
.name =
"ICH8DO" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_ICH8M] = {
.name =
"ICH8M" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_ICH8ME] = {
.name =
"ICH8M-E" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V7_GPIO,
},
[LPC_ICH9] = {
.name =
"ICH9" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V9_GPIO,
},
[LPC_ICH9R] = {
.name =
"ICH9R" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V9_GPIO,
},
[LPC_ICH9DH] = {
.name =
"ICH9DH" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V9_GPIO,
},
[LPC_ICH9DO] = {
.name =
"ICH9DO" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V9_GPIO,
},
[LPC_ICH9M] = {
.name =
"ICH9M" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V9_GPIO,
},
[LPC_ICH9ME] = {
.name =
"ICH9M-E" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V9_GPIO,
},
[LPC_ICH10] = {
.name =
"ICH10" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V10CONS_GPIO,
},
[LPC_ICH10R] = {
.name =
"ICH10R" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V10CONS_GPIO,
},
[LPC_ICH10D] = {
.name =
"ICH10D" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V10CORP_GPIO,
},
[LPC_ICH10DO] = {
.name =
"ICH10DO" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V10CORP_GPIO,
},
[LPC_PCH] = {
.name =
"PCH Desktop Full Featured" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_PCHM] = {
.name =
"PCH Mobile Full Featured" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_P55] = {
.name =
"P55" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_PM55] = {
.name =
"PM55" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_H55] = {
.name =
"H55" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_QM57] = {
.name =
"QM57" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_H57] = {
.name =
"H57" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_HM55] = {
.name =
"HM55" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_Q57] = {
.name =
"Q57" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_HM57] = {
.name =
"HM57" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_PCHMSFF] = {
.name =
"PCH Mobile SFF Full Featured" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_QS57] = {
.name =
"QS57" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_3400] = {
.name =
"3400" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_3420] = {
.name =
"3420" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_3450] = {
.name =
"3450" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_EP80579] = {
.name =
"EP80579" ,
.iTCO_version =
2 ,
},
[LPC_CPT] = {
.name =
"Cougar Point" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_CPTD] = {
.name =
"Cougar Point Desktop" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_CPTM] = {
.name =
"Cougar Point Mobile" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_PBG] = {
.name =
"Patsburg" ,
.iTCO_version =
2 ,
},
[LPC_DH89XXCC] = {
.name =
"DH89xxCC" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_PPT] = {
.name =
"Panther Point" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_LPT] = {
.name =
"Lynx Point" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
.spi_type = INTEL_SPI_LPT,
},
[LPC_LPT_LP] = {
.name =
"Lynx Point_LP" ,
.iTCO_version =
2 ,
.spi_type = INTEL_SPI_LPT,
},
[LPC_WBG] = {
.name =
"Wellsburg" ,
.iTCO_version =
2 ,
},
[LPC_AVN] = {
.name =
"Avoton SoC" ,
.iTCO_version =
3 ,
.gpio_version = AVOTON_GPIO,
.spi_type = INTEL_SPI_BYT,
},
[LPC_BAYTRAIL] = {
.name =
"Bay Trail SoC" ,
.iTCO_version =
3 ,
.spi_type = INTEL_SPI_BYT,
},
[LPC_COLETO] = {
.name =
"Coleto Creek" ,
.iTCO_version =
2 ,
},
[LPC_WPT_LP] = {
.name =
"Wildcat Point_LP" ,
.iTCO_version =
2 ,
.spi_type = INTEL_SPI_LPT,
},
[LPC_BRASWELL] = {
.name =
"Braswell SoC" ,
.iTCO_version =
3 ,
.spi_type = INTEL_SPI_BYT,
},
[LPC_LEWISBURG] = {
.name =
"Lewisburg" ,
.iTCO_version =
2 ,
},
[LPC_9S] = {
.name =
"9 Series" ,
.iTCO_version =
2 ,
.gpio_version = ICH_V5_GPIO,
},
[LPC_APL] = {
.name =
"Apollo Lake SoC" ,
.iTCO_version =
5 ,
.gpio_info = &apl_gpio_info,
.spi_type = INTEL_SPI_BXT,
},
[LPC_DNV] = {
.name =
"Denverton SoC" ,
.gpio_info = &dnv_gpio_info,
},
[LPC_GLK] = {
.name =
"Gemini Lake SoC" ,
.spi_type = INTEL_SPI_BXT,
},
[LPC_COUGARMOUNTAIN] = {
.name =
"Cougar Mountain SoC" ,
.iTCO_version =
3 ,
},
};
/*
* This data only exists for exporting the supported PCI ids
* via MODULE_DEVICE_TABLE. We do not actually register a
* pci_driver, because the I/O Controller Hub has also other
* functions that probably will be registered by other drivers.
*/
static const struct pci_device_id lpc_ich_ids[] = {
{ PCI_VDEVICE(INTEL,
0 x0f1c), LPC_BAYTRAIL},
{ PCI_VDEVICE(INTEL,
0 x19dc), LPC_DNV},
{ PCI_VDEVICE(INTEL,
0 x1c41), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c42), LPC_CPTD},
{ PCI_VDEVICE(INTEL,
0 x1c43), LPC_CPTM},
{ PCI_VDEVICE(INTEL,
0 x1c44), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c45), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c46), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c47), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c48), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c49), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c4a), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c4b), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c4c), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c4d), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c4e), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c4f), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c50), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c51), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c52), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c53), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c54), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c55), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c56), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c57), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c58), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c59), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c5a), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c5b), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c5c), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c5d), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c5e), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1c5f), LPC_CPT},
{ PCI_VDEVICE(INTEL,
0 x1d40), LPC_PBG},
{ PCI_VDEVICE(INTEL,
0 x1d41), LPC_PBG},
{ PCI_VDEVICE(INTEL,
0 x1e40), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e41), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e42), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e43), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e44), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e45), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e46), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e47), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e48), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e49), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e4a), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e4b), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e4c), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e4d), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e4e), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e4f), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e50), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e51), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e52), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e53), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e54), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e55), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e56), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e57), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e58), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e59), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e5a), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e5b), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e5c), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e5d), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e5e), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1e5f), LPC_PPT},
{ PCI_VDEVICE(INTEL,
0 x1f38), LPC_AVN},
{ PCI_VDEVICE(INTEL,
0 x1f39), LPC_AVN},
{ PCI_VDEVICE(INTEL,
0 x1f3a), LPC_AVN},
{ PCI_VDEVICE(INTEL,
0 x1f3b), LPC_AVN},
{ PCI_VDEVICE(INTEL,
0 x229c), LPC_BRASWELL},
{ PCI_VDEVICE(INTEL,
0 x2310), LPC_DH89XXCC},
{ PCI_VDEVICE(INTEL,
0 x2390), LPC_COLETO},
{ PCI_VDEVICE(INTEL,
0 x2410), LPC_ICH},
{ PCI_VDEVICE(INTEL,
0 x2420), LPC_ICH0},
{ PCI_VDEVICE(INTEL,
0 x2440), LPC_ICH2},
{ PCI_VDEVICE(INTEL,
0 x244c), LPC_ICH2M},
{ PCI_VDEVICE(INTEL,
0 x2450), LPC_CICH},
{ PCI_VDEVICE(INTEL,
0 x2480), LPC_ICH3},
{ PCI_VDEVICE(INTEL,
0 x248c), LPC_ICH3M},
{ PCI_VDEVICE(INTEL,
0 x24c0), LPC_ICH4},
{ PCI_VDEVICE(INTEL,
0 x24cc), LPC_ICH4M},
{ PCI_VDEVICE(INTEL,
0 x24d0), LPC_ICH5},
{ PCI_VDEVICE(INTEL,
0 x25a1), LPC_6300ESB},
{ PCI_VDEVICE(INTEL,
0 x2640), LPC_ICH6},
{ PCI_VDEVICE(INTEL,
0 x2641), LPC_ICH6M},
{ PCI_VDEVICE(INTEL,
0 x2642), LPC_ICH6W},
{ PCI_VDEVICE(INTEL,
0 x2670), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x2671), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x2672), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x2673), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x2674), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x2675), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x2676), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x2677), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x2678), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x2679), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x267a), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x267b), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x267c), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x267d), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x267e), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x267f), LPC_631XESB},
{ PCI_VDEVICE(INTEL,
0 x27b0), LPC_ICH7DH},
{ PCI_VDEVICE(INTEL,
0 x27b8), LPC_ICH7},
{ PCI_VDEVICE(INTEL,
0 x27b9), LPC_ICH7M},
{ PCI_VDEVICE(INTEL,
0 x27bc), LPC_NM10},
{ PCI_VDEVICE(INTEL,
0 x27bd), LPC_ICH7MDH},
{ PCI_VDEVICE(INTEL,
0 x2810), LPC_ICH8},
{ PCI_VDEVICE(INTEL,
0 x2811), LPC_ICH8ME},
{ PCI_VDEVICE(INTEL,
0 x2812), LPC_ICH8DH},
{ PCI_VDEVICE(INTEL,
0 x2814), LPC_ICH8DO},
{ PCI_VDEVICE(INTEL,
0 x2815), LPC_ICH8M},
{ PCI_VDEVICE(INTEL,
0 x2912), LPC_ICH9DH},
{ PCI_VDEVICE(INTEL,
0 x2914), LPC_ICH9DO},
{ PCI_VDEVICE(INTEL,
0 x2916), LPC_ICH9R},
{ PCI_VDEVICE(INTEL,
0 x2917), LPC_ICH9ME},
{ PCI_VDEVICE(INTEL,
0 x2918), LPC_ICH9},
{ PCI_VDEVICE(INTEL,
0 x2919), LPC_ICH9M},
{ PCI_VDEVICE(INTEL,
0 x2b9c), LPC_COUGARMOUNTAIN},
{ PCI_VDEVICE(INTEL,
0 x3197), LPC_GLK},
{ PCI_VDEVICE(INTEL,
0 x31e8), LPC_GLK},
{ PCI_VDEVICE(INTEL,
0 x3a14), LPC_ICH10DO},
{ PCI_VDEVICE(INTEL,
0 x3a16), LPC_ICH10R},
{ PCI_VDEVICE(INTEL,
0 x3a18), LPC_ICH10},
{ PCI_VDEVICE(INTEL,
0 x3a1a), LPC_ICH10D},
{ PCI_VDEVICE(INTEL,
0 x3b00), LPC_PCH},
{ PCI_VDEVICE(INTEL,
0 x3b01), LPC_PCHM},
{ PCI_VDEVICE(INTEL,
0 x3b02), LPC_P55},
{ PCI_VDEVICE(INTEL,
0 x3b03), LPC_PM55},
{ PCI_VDEVICE(INTEL,
0 x3b06), LPC_H55},
{ PCI_VDEVICE(INTEL,
0 x3b07), LPC_QM57},
{ PCI_VDEVICE(INTEL,
0 x3b08), LPC_H57},
{ PCI_VDEVICE(INTEL,
0 x3b09), LPC_HM55},
{ PCI_VDEVICE(INTEL,
0 x3b0a), LPC_Q57},
{ PCI_VDEVICE(INTEL,
0 x3b0b), LPC_HM57},
{ PCI_VDEVICE(INTEL,
0 x3b0d), LPC_PCHMSFF},
{ PCI_VDEVICE(INTEL,
0 x3b0f), LPC_QS57},
{ PCI_VDEVICE(INTEL,
0 x3b12), LPC_3400},
{ PCI_VDEVICE(INTEL,
0 x3b14), LPC_3420},
{ PCI_VDEVICE(INTEL,
0 x3b16), LPC_3450},
{ PCI_VDEVICE(INTEL,
0 x5031), LPC_EP80579},
{ PCI_VDEVICE(INTEL,
0 x5ae8), LPC_APL},
{ PCI_VDEVICE(INTEL,
0 x8c40), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c41), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c42), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c43), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c44), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c45), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c46), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c47), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c48), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c49), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c4a), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c4b), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c4c), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c4d), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c4e), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c4f), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c50), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c51), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c52), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c53), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c54), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c55), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c56), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c57), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c58), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c59), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c5a), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c5b), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c5c), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c5d), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c5e), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8c5f), LPC_LPT},
{ PCI_VDEVICE(INTEL,
0 x8cc1), LPC_9S},
{ PCI_VDEVICE(INTEL,
0 x8cc2), LPC_9S},
{ PCI_VDEVICE(INTEL,
0 x8cc3), LPC_9S},
{ PCI_VDEVICE(INTEL,
0 x8cc4), LPC_9S},
{ PCI_VDEVICE(INTEL,
0 x8cc6), LPC_9S},
{ PCI_VDEVICE(INTEL,
0 x8d40), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d41), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d42), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d43), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d44), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d45), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d46), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d47), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d48), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d49), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d4a), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d4b), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d4c), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d4d), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d4e), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d4f), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d50), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d51), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d52), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d53), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d54), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d55), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d56), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d57), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d58), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d59), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d5a), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d5b), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d5c), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d5d), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d5e), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x8d5f), LPC_WBG},
{ PCI_VDEVICE(INTEL,
0 x9c40), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9c41), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9c42), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9c43), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9c44), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9c45), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9c46), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9c47), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9cc1), LPC_WPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9cc2), LPC_WPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9cc3), LPC_WPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9cc5), LPC_WPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9cc6), LPC_WPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9cc7), LPC_WPT_LP},
{ PCI_VDEVICE(INTEL,
0 x9cc9), LPC_WPT_LP},
{ PCI_VDEVICE(INTEL,
0 xa1c1), LPC_LEWISBURG},
{ PCI_VDEVICE(INTEL,
0 xa1c2), LPC_LEWISBURG},
{ PCI_VDEVICE(INTEL,
0 xa1c3), LPC_LEWISBURG},
{ PCI_VDEVICE(INTEL,
0 xa1c4), LPC_LEWISBURG},
{ PCI_VDEVICE(INTEL,
0 xa1c5), LPC_LEWISBURG},
{ PCI_VDEVICE(INTEL,
0 xa1c6), LPC_LEWISBURG},
{ PCI_VDEVICE(INTEL,
0 xa1c7), LPC_LEWISBURG},
{ PCI_VDEVICE(INTEL,
0 xa242), LPC_LEWISBURG},
{ PCI_VDEVICE(INTEL,
0 xa243), LPC_LEWISBURG},
{
0 , },
/* End of list */
};
MODULE_DEVICE_TABLE(pci, lpc_ich_ids);
static void lpc_ich_restore_config_space(
struct pci_dev *dev)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
if (priv->abase_save >=
0 ) {
pci_write_config_byte(dev, priv->abase, priv->abase_save);
priv->abase_save = -
1 ;
}
if (priv->actrl_pbase_save >=
0 ) {
pci_write_config_byte(dev, priv->actrl_pbase,
priv->actrl_pbase_save);
priv->actrl_pbase_save = -
1 ;
}
if (priv->gctrl_save >=
0 ) {
pci_write_config_byte(dev, priv->gctrl, priv->gctrl_save);
priv->gctrl_save = -
1 ;
}
}
static void lpc_ich_enable_acpi_space(
struct pci_dev *dev)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
u8 reg_save;
switch (lpc_chipset_info[priv->chipset].iTCO_version) {
case 3 :
/*
* Some chipsets (eg Avoton) enable the ACPI space in the
* ACPI BASE register.
*/
pci_read_config_byte(dev, priv->abase, ®_save);
pci_write_config_byte(dev, priv->abase, reg_save |
0 x2);
priv->abase_save = reg_save;
break ;
default :
/*
* Most chipsets enable the ACPI space in the ACPI control
* register.
*/
pci_read_config_byte(dev, priv->actrl_pbase, ®_save);
pci_write_config_byte(dev, priv->actrl_pbase, reg_save |
0 x80);
priv->actrl_pbase_save = reg_save;
break ;
}
}
static void lpc_ich_enable_gpio_space(
struct pci_dev *dev)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
u8 reg_save;
pci_read_config_byte(dev, priv->gctrl, ®_save);
pci_write_config_byte(dev, priv->gctrl, reg_save |
0 x10);
priv->gctrl_save = reg_save;
}
static void lpc_ich_enable_pmc_space(
struct pci_dev *dev)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
u8 reg_save;
pci_read_config_byte(dev, priv->actrl_pbase, ®_save);
pci_write_config_byte(dev, priv->actrl_pbase, reg_save |
0 x2);
priv->actrl_pbase_save = reg_save;
}
static int lpc_ich_finalize_wdt_cell(
struct pci_dev *dev)
{
struct itco_wdt_platform_data *pdata;
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
struct lpc_ich_info *info;
struct mfd_cell *cell = &lpc_ich_wdt_cell;
pdata = devm_kzalloc(&dev->dev,
sizeof (*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
info = &lpc_chipset_info[priv->chipset];
pdata->version = info->iTCO_version;
strscpy(pdata->name, info->name,
sizeof (pdata->name));
cell->platform_data = pdata;
cell->pdata_size =
sizeof (*pdata);
return 0 ;
}
static void lpc_ich_finalize_gpio_cell(
struct pci_dev *dev)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
struct mfd_cell *cell = &lpc_ich_gpio_cell;
cell->platform_data = &lpc_chipset_info[priv->chipset];
cell->pdata_size =
sizeof (
struct lpc_ich_info);
}
/*
* We don't check for resource conflict globally. There are 2 or 3 independent
* GPIO groups and it's enough to have access to one of these to instantiate
* the device.
*/
static int lpc_ich_check_conflict_gpio(
struct resource *res)
{
int ret;
u8 use_gpio =
0 ;
if (resource_size(res) >=
0 x50 &&
!acpi_check_region(res->start +
0 x40,
0 x10,
"LPC ICH GPIO3" ))
use_gpio |=
1 <<
2 ;
if (!acpi_check_region(res->start +
0 x30,
0 x10,
"LPC ICH GPIO2" ))
use_gpio |=
1 <<
1 ;
ret = acpi_check_region(res->start +
0 x00,
0 x30,
"LPC ICH GPIO1" );
if (!ret)
use_gpio |=
1 <<
0 ;
return use_gpio ? use_gpio : ret;
}
static int lpc_ich_init_gpio(
struct pci_dev *dev)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
u32 base_addr_cfg;
u32 base_addr;
int ret;
bool acpi_conflict =
false ;
struct resource *res;
/* Setup power management base register */
pci_read_config_dword(dev, priv->abase, &base_addr_cfg);
base_addr = base_addr_cfg &
0 x0000ff80;
if (!base_addr) {
dev_notice(&dev->dev,
"I/O space for ACPI uninitialized\n" );
lpc_ich_gpio_cell.num_resources--;
goto gpe0_done;
}
res = &gpio_ich_res[ICH_RES_GPE0];
res->start = base_addr + ACPIBASE_GPE_OFF;
res->end = base_addr + ACPIBASE_GPE_END;
ret = acpi_check_resource_conflict(res);
if (ret) {
/*
* This isn't fatal for the GPIO, but we have to make sure that
* the platform_device subsystem doesn't see this resource
* or it will register an invalid region.
*/
lpc_ich_gpio_cell.num_resources--;
acpi_conflict =
true ;
}
else {
lpc_ich_enable_acpi_space(dev);
}
gpe0_done:
/* Setup GPIO base register */
pci_read_config_dword(dev, priv->gbase, &base_addr_cfg);
base_addr = base_addr_cfg &
0 x0000ff80;
if (!base_addr) {
dev_notice(&dev->dev,
"I/O space for GPIO uninitialized\n" );
ret = -ENODEV;
goto gpio_done;
}
/* Older devices provide fewer GPIO and have a smaller resource size. */
res = &gpio_ich_res[ICH_RES_GPIO];
res->start = base_addr;
switch (lpc_chipset_info[priv->chipset].gpio_version) {
case ICH_V5_GPIO:
case ICH_V10CORP_GPIO:
res->end = res->start +
128 -
1 ;
break ;
default :
res->end = res->start +
64 -
1 ;
break ;
}
ret = lpc_ich_check_conflict_gpio(res);
if (ret <
0 ) {
/* this isn't necessarily fatal for the GPIO */
acpi_conflict =
true ;
goto gpio_done;
}
lpc_chipset_info[priv->chipset].use_gpio = ret;
lpc_ich_enable_gpio_space(dev);
lpc_ich_finalize_gpio_cell(dev);
ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO,
&lpc_ich_gpio_cell,
1 , NULL,
0 , NULL);
gpio_done:
if (acpi_conflict)
pr_warn(
"Resource conflict(s) found affecting %s\n" ,
lpc_ich_gpio_cell.name);
return ret;
}
static int lpc_ich_init_wdt(
struct pci_dev *dev)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
u32 base_addr_cfg;
u32 base_addr;
int ret;
struct resource *res;
/* If we have ACPI based watchdog use that instead */
if (acpi_has_watchdog())
return -ENODEV;
/* Setup power management base register */
pci_read_config_dword(dev, priv->abase, &base_addr_cfg);
base_addr = base_addr_cfg &
0 x0000ff80;
if (!base_addr) {
dev_notice(&dev->dev,
"I/O space for ACPI uninitialized\n" );
ret = -ENODEV;
goto wdt_done;
}
res = wdt_io_res(ICH_RES_IO_TCO);
res->start = base_addr + ACPIBASE_TCO_OFF;
res->end = base_addr + ACPIBASE_TCO_END;
res = wdt_io_res(ICH_RES_IO_SMI);
res->start = base_addr + ACPIBASE_SMI_OFF;
res->end = base_addr + ACPIBASE_SMI_END;
lpc_ich_enable_acpi_space(dev);
/*
* iTCO v2:
* Get the Memory-Mapped GCS register. To get access to it
* we have to read RCBA from PCI Config space 0xf0 and use
* it as base. GCS = RCBA + ICH6_GCS(0x3410).
*
* iTCO v3:
* Get the Power Management Configuration register. To get access
* to it we have to read the PMC BASE from config space and address
* the register at offset 0x8.
*/
if (lpc_chipset_info[priv->chipset].iTCO_version ==
1 ) {
/* Don't register iomem for TCO ver 1 */
lpc_ich_wdt_cell.num_resources--;
}
else if (lpc_chipset_info[priv->chipset].iTCO_version ==
2 ) {
pci_read_config_dword(dev, RCBABASE, &base_addr_cfg);
base_addr = base_addr_cfg &
0 xffffc000;
if (!(base_addr_cfg &
1 )) {
dev_notice(&dev->dev,
"RCBA is disabled by "
"hardware/BIOS, device disabled\n" );
ret = -ENODEV;
goto wdt_done;
}
res = wdt_mem_res(ICH_RES_MEM_GCS_PMC);
res->start = base_addr + ACPIBASE_GCS_OFF;
res->end = base_addr + ACPIBASE_GCS_END;
}
else if (lpc_chipset_info[priv->chipset].iTCO_version ==
3 ) {
lpc_ich_enable_pmc_space(dev);
pci_read_config_dword(dev, ACPICTRL_PMCBASE, &base_addr_cfg);
base_addr = base_addr_cfg &
0 xfffffe00;
res = wdt_mem_res(ICH_RES_MEM_GCS_PMC);
res->start = base_addr + ACPIBASE_PMC_OFF;
res->end = base_addr + ACPIBASE_PMC_END;
}
ret = lpc_ich_finalize_wdt_cell(dev);
if (ret)
goto wdt_done;
ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO,
&lpc_ich_wdt_cell,
1 , NULL,
0 , NULL);
wdt_done:
return ret;
}
static int lpc_ich_init_pinctrl(
struct pci_dev *dev)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
const struct lpc_ich_gpio_info *info = lpc_chipset_info[priv->chipset].gpio_info;
struct resource base;
unsigned int i;
int ret;
/* Check, if GPIO has been exported as an ACPI device */
if (acpi_dev_present(info->hid, NULL, -
1 ))
return -EEXIST;
ret = p2sb_bar(dev->bus,
0 , &base);
if (ret)
return ret;
for (i =
0 ; i < info->nr_resources; i++) {
struct resource *mem = info->resources[i];
resource_size_t offset = info->offsets[i];
/* Fill MEM resource */
mem->start = base.start + offset;
mem->end = base.start + offset + INTEL_GPIO_RESOURCE_SIZE -
1 ;
mem->flags = base.flags;
}
return mfd_add_devices(&dev->dev,
0 , info->devices, info->nr_devices,
NULL,
0 , NULL);
}
static bool lpc_ich_byt_set_writeable(
void __iomem *base,
void *data)
{
u32 val;
val = readl(base + BYT_BCR);
if (!(val & BYT_BCR_WPD)) {
val |= BYT_BCR_WPD;
writel(val, base + BYT_BCR);
val = readl(base + BYT_BCR);
}
return val & BYT_BCR_WPD;
}
static bool lpc_ich_set_writeable(
struct pci_bus *bus,
unsigned int devfn)
{
u32 bcr;
pci_bus_read_config_dword(bus, devfn, BCR, &bcr);
if (!(bcr & BCR_WPD)) {
bcr |= BCR_WPD;
pci_bus_write_config_dword(bus, devfn, BCR, bcr);
pci_bus_read_config_dword(bus, devfn, BCR, &bcr);
}
return bcr & BCR_WPD;
}
static bool lpc_ich_lpt_set_writeable(
void __iomem *base,
void *data)
{
struct pci_dev *pdev = data;
return lpc_ich_set_writeable(pdev->bus, pdev->devfn);
}
static bool lpc_ich_bxt_set_writeable(
void __iomem *base,
void *data)
{
struct pci_dev *pdev = data;
return lpc_ich_set_writeable(pdev->bus, PCI_DEVFN(
13 ,
2 ));
}
static int lpc_ich_init_spi(
struct pci_dev *dev)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
struct resource *res = &intel_spi_res[
0 ];
struct intel_spi_boardinfo *info;
u32 spi_base, rcba;
int ret;
info = devm_kzalloc(&dev->dev,
sizeof (*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
info->type = lpc_chipset_info[priv->chipset].spi_type;
switch (info->type) {
case INTEL_SPI_BYT:
pci_read_config_dword(dev, SPIBASE_BYT, &spi_base);
if (spi_base & SPIBASE_BYT_EN) {
res->start = ALIGN_DOWN(spi_base, SPIBASE_BYT_SZ);
res->end = res->start + SPIBASE_BYT_SZ -
1 ;
info->set_writeable = lpc_ich_byt_set_writeable;
}
break ;
case INTEL_SPI_LPT:
pci_read_config_dword(dev, RCBABASE, &rcba);
if (rcba &
1 ) {
spi_base = round_down(rcba, SPIBASE_LPT_SZ);
res->start = spi_base + SPIBASE_LPT;
res->end = res->start + SPIBASE_LPT_SZ -
1 ;
info->set_writeable = lpc_ich_lpt_set_writeable;
info->data = dev;
}
break ;
case INTEL_SPI_BXT:
/*
* The P2SB is hidden by BIOS and we need to unhide it in
* order to read BAR of the SPI flash device. Once that is
* done we hide it again.
*/
ret = p2sb_bar(dev->bus, PCI_DEVFN(
13 ,
2 ), res);
if (ret)
return ret;
info->set_writeable = lpc_ich_bxt_set_writeable;
info->data = dev;
break ;
default :
return -EINVAL;
}
if (!res->start)
return -ENODEV;
lpc_ich_spi_cell.platform_data = info;
lpc_ich_spi_cell.pdata_size =
sizeof (*info);
return mfd_add_devices(&dev->dev, PLATFORM_DEVID_NONE,
&lpc_ich_spi_cell,
1 , NULL,
0 , NULL);
}
static int lpc_ich_probe(
struct pci_dev *dev,
const struct pci_device_id *id)
{
struct lpc_ich_priv *priv;
int ret;
bool cell_added =
false ;
priv = devm_kzalloc(&dev->dev,
sizeof (
struct lpc_ich_priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->chipset = id->driver_data;
priv->actrl_pbase_save = -
1 ;
priv->abase_save = -
1 ;
priv->abase = ACPIBASE;
priv->actrl_pbase = ACPICTRL_PMCBASE;
priv->gctrl_save = -
1 ;
if (priv->chipset <= LPC_ICH5) {
priv->gbase = GPIOBASE_ICH0;
priv->gctrl = GPIOCTRL_ICH0;
}
else {
priv->gbase = GPIOBASE_ICH6;
priv->gctrl = GPIOCTRL_ICH6;
}
pci_set_drvdata(dev, priv);
if (lpc_chipset_info[priv->chipset].iTCO_version) {
ret = lpc_ich_init_wdt(dev);
if (!ret)
cell_added =
true ;
}
if (lpc_chipset_info[priv->chipset].gpio_version) {
ret = lpc_ich_init_gpio(dev);
if (!ret)
cell_added =
true ;
}
if (lpc_chipset_info[priv->chipset].gpio_info) {
ret = lpc_ich_init_pinctrl(dev);
if (!ret)
cell_added =
true ;
}
if (lpc_chipset_info[priv->chipset].spi_type) {
ret = lpc_ich_init_spi(dev);
if (!ret)
cell_added =
true ;
}
/*
* We only care if at least one or none of the cells registered
* successfully.
*/
if (!cell_added) {
dev_warn(&dev->dev,
"No MFD cells added\n" );
lpc_ich_restore_config_space(dev);
return -ENODEV;
}
return 0 ;
}
static void lpc_ich_remove(
struct pci_dev *dev)
{
mfd_remove_devices(&dev->dev);
lpc_ich_restore_config_space(dev);
}
static struct pci_driver lpc_ich_driver = {
.name =
"lpc_ich" ,
.id_table = lpc_ich_ids,
.probe = lpc_ich_probe,
.remove = lpc_ich_remove,
};
module_pci_driver(lpc_ich_driver);
MODULE_AUTHOR(
"Aaron Sierra <asierra@xes-inc.com>" );
MODULE_DESCRIPTION(
"LPC interface for Intel ICH" );
MODULE_LICENSE(
"GPL" );
Messung V0.5 in Prozent C=96 H=93 G=94
¤ Dauer der Verarbeitung: 0.16 Sekunden
(vorverarbeitet am 2026-06-08)
¤
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