| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Aaron Sierra | 4732 | 62.09% | 5 | 8.93% |
| Andy Shevchenko | 780 | 10.23% | 8 | 14.29% |
| Mika Westerberg | 548 | 7.19% | 8 | 14.29% |
| Tan Jui Nee | 435 | 5.71% | 2 | 3.57% |
| James Ralston | 333 | 4.37% | 6 | 10.71% |
| Peter Tyser | 234 | 3.07% | 7 | 12.50% |
| Alexandra Yates | 118 | 1.55% | 1 | 1.79% |
| Jean Delvare | 113 | 1.48% | 1 | 1.79% |
| Matt Fleming | 110 | 1.44% | 1 | 1.79% |
| Alan Cox | 59 | 0.77% | 1 | 1.79% |
| Seth Heasley | 44 | 0.58% | 1 | 1.79% |
| Priyalee Kushwaha | 30 | 0.39% | 1 | 1.79% |
| Paul Bolle | 21 | 0.28% | 1 | 1.79% |
| Dan Gora | 10 | 0.13% | 1 | 1.79% |
| Peter Hurley | 8 | 0.10% | 1 | 1.79% |
| Mark Brown | 8 | 0.10% | 1 | 1.79% |
| Ilpo Järvinen | 7 | 0.09% | 1 | 1.79% |
| Jingoo Han | 7 | 0.09% | 2 | 3.57% |
| Vincent Donnefort | 5 | 0.07% | 1 | 1.79% |
| Chris Blake | 5 | 0.07% | 1 | 1.79% |
| Joakim Tjernlund | 5 | 0.07% | 1 | 1.79% |
| Guenter Roeck | 5 | 0.07% | 1 | 1.79% |
| Libo Chen | 2 | 0.03% | 1 | 1.79% |
| Thomas Gleixner | 1 | 0.01% | 1 | 1.79% |
| Wolfram Sang | 1 | 0.01% | 1 | 1.79% |
| Total | 7621 | 56 |
// 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 0x40 #define ACPIBASE_GPE_OFF 0x28 #define ACPIBASE_GPE_END 0x2f #define ACPIBASE_SMI_OFF 0x30 #define ACPIBASE_SMI_END 0x33 #define ACPIBASE_PMC_OFF 0x08 #define ACPIBASE_PMC_END 0x0c #define ACPIBASE_TCO_OFF 0x60 #define ACPIBASE_TCO_END 0x7f #define ACPICTRL_PMCBASE 0x44 #define ACPIBASE_GCS_OFF 0x3410 #define ACPIBASE_GCS_END 0x3414 #define SPIBASE_BYT 0x54 #define SPIBASE_BYT_SZ 512 #define SPIBASE_BYT_EN BIT(1) #define BYT_BCR 0xfc #define BYT_BCR_WPD BIT(0) #define SPIBASE_LPT 0x3800 #define SPIBASE_LPT_SZ 512 #define BCR 0xdc #define BCR_WPD BIT(0) #define GPIOBASE_ICH0 0x58 #define GPIOCTRL_ICH0 0x5C #define GPIOBASE_ICH6 0x48 #define GPIOCTRL_ICH6 0x4C #define RCBABASE 0xf0 #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 0x1000 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] = 0xc50000, [APL_GPIO_NORTHWEST] = 0xc40000, [APL_GPIO_WEST] = 0xc70000, [APL_GPIO_SOUTHWEST] = 0xc00000, }; #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] = 0xc20000, [DNV_GPIO_SOUTH] = 0xc50000, }; #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, 0x0f1c), LPC_BAYTRAIL}, { PCI_VDEVICE(INTEL, 0x19dc), LPC_DNV}, { PCI_VDEVICE(INTEL, 0x1c41), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c42), LPC_CPTD}, { PCI_VDEVICE(INTEL, 0x1c43), LPC_CPTM}, { PCI_VDEVICE(INTEL, 0x1c44), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c45), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c46), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c47), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c48), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c49), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c4a), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c4b), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c4c), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c4d), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c4e), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c4f), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c50), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c51), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c52), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c53), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c54), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c55), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c56), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c57), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c58), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c59), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c5a), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c5b), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c5c), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c5d), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c5e), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1c5f), LPC_CPT}, { PCI_VDEVICE(INTEL, 0x1d40), LPC_PBG}, { PCI_VDEVICE(INTEL, 0x1d41), LPC_PBG}, { PCI_VDEVICE(INTEL, 0x1e40), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e41), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e42), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e43), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e44), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e45), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e46), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e47), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e48), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e49), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e4a), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e4b), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e4c), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e4d), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e4e), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e4f), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e50), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e51), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e52), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e53), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e54), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e55), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e56), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e57), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e58), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e59), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e5a), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e5b), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e5c), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e5d), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e5e), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1e5f), LPC_PPT}, { PCI_VDEVICE(INTEL, 0x1f38), LPC_AVN}, { PCI_VDEVICE(INTEL, 0x1f39), LPC_AVN}, { PCI_VDEVICE(INTEL, 0x1f3a), LPC_AVN}, { PCI_VDEVICE(INTEL, 0x1f3b), LPC_AVN}, { PCI_VDEVICE(INTEL, 0x229c), LPC_BRASWELL}, { PCI_VDEVICE(INTEL, 0x2310), LPC_DH89XXCC}, { PCI_VDEVICE(INTEL, 0x2390), LPC_COLETO}, { PCI_VDEVICE(INTEL, 0x2410), LPC_ICH}, { PCI_VDEVICE(INTEL, 0x2420), LPC_ICH0}, { PCI_VDEVICE(INTEL, 0x2440), LPC_ICH2}, { PCI_VDEVICE(INTEL, 0x244c), LPC_ICH2M}, { PCI_VDEVICE(INTEL, 0x2450), LPC_CICH}, { PCI_VDEVICE(INTEL, 0x2480), LPC_ICH3}, { PCI_VDEVICE(INTEL, 0x248c), LPC_ICH3M}, { PCI_VDEVICE(INTEL, 0x24c0), LPC_ICH4}, { PCI_VDEVICE(INTEL, 0x24cc), LPC_ICH4M}, { PCI_VDEVICE(INTEL, 0x24d0), LPC_ICH5}, { PCI_VDEVICE(INTEL, 0x25a1), LPC_6300ESB}, { PCI_VDEVICE(INTEL, 0x2640), LPC_ICH6}, { PCI_VDEVICE(INTEL, 0x2641), LPC_ICH6M}, { PCI_VDEVICE(INTEL, 0x2642), LPC_ICH6W}, { PCI_VDEVICE(INTEL, 0x2670), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x2671), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x2672), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x2673), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x2674), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x2675), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x2676), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x2677), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x2678), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x2679), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x267a), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x267b), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x267c), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x267d), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x267e), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x267f), LPC_631XESB}, { PCI_VDEVICE(INTEL, 0x27b0), LPC_ICH7DH}, { PCI_VDEVICE(INTEL, 0x27b8), LPC_ICH7}, { PCI_VDEVICE(INTEL, 0x27b9), LPC_ICH7M}, { PCI_VDEVICE(INTEL, 0x27bc), LPC_NM10}, { PCI_VDEVICE(INTEL, 0x27bd), LPC_ICH7MDH}, { PCI_VDEVICE(INTEL, 0x2810), LPC_ICH8}, { PCI_VDEVICE(INTEL, 0x2811), LPC_ICH8ME}, { PCI_VDEVICE(INTEL, 0x2812), LPC_ICH8DH}, { PCI_VDEVICE(INTEL, 0x2814), LPC_ICH8DO}, { PCI_VDEVICE(INTEL, 0x2815), LPC_ICH8M}, { PCI_VDEVICE(INTEL, 0x2912), LPC_ICH9DH}, { PCI_VDEVICE(INTEL, 0x2914), LPC_ICH9DO}, { PCI_VDEVICE(INTEL, 0x2916), LPC_ICH9R}, { PCI_VDEVICE(INTEL, 0x2917), LPC_ICH9ME}, { PCI_VDEVICE(INTEL, 0x2918), LPC_ICH9}, { PCI_VDEVICE(INTEL, 0x2919), LPC_ICH9M}, { PCI_VDEVICE(INTEL, 0x3197), LPC_GLK}, { PCI_VDEVICE(INTEL, 0x2b9c), LPC_COUGARMOUNTAIN}, { PCI_VDEVICE(INTEL, 0x3a14), LPC_ICH10DO}, { PCI_VDEVICE(INTEL, 0x3a16), LPC_ICH10R}, { PCI_VDEVICE(INTEL, 0x3a18), LPC_ICH10}, { PCI_VDEVICE(INTEL, 0x3a1a), LPC_ICH10D}, { PCI_VDEVICE(INTEL, 0x3b00), LPC_PCH}, { PCI_VDEVICE(INTEL, 0x3b01), LPC_PCHM}, { PCI_VDEVICE(INTEL, 0x3b02), LPC_P55}, { PCI_VDEVICE(INTEL, 0x3b03), LPC_PM55}, { PCI_VDEVICE(INTEL, 0x3b06), LPC_H55}, { PCI_VDEVICE(INTEL, 0x3b07), LPC_QM57}, { PCI_VDEVICE(INTEL, 0x3b08), LPC_H57}, { PCI_VDEVICE(INTEL, 0x3b09), LPC_HM55}, { PCI_VDEVICE(INTEL, 0x3b0a), LPC_Q57}, { PCI_VDEVICE(INTEL, 0x3b0b), LPC_HM57}, { PCI_VDEVICE(INTEL, 0x3b0d), LPC_PCHMSFF}, { PCI_VDEVICE(INTEL, 0x3b0f), LPC_QS57}, { PCI_VDEVICE(INTEL, 0x3b12), LPC_3400}, { PCI_VDEVICE(INTEL, 0x3b14), LPC_3420}, { PCI_VDEVICE(INTEL, 0x3b16), LPC_3450}, { PCI_VDEVICE(INTEL, 0x5031), LPC_EP80579}, { PCI_VDEVICE(INTEL, 0x5ae8), LPC_APL}, { PCI_VDEVICE(INTEL, 0x8c40), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c41), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c42), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c43), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c44), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c45), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c46), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c47), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c48), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c49), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c4a), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c4b), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c4c), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c4d), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c4e), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c4f), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c50), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c51), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c52), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c53), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c54), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c55), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c56), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c57), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c58), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c59), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c5a), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c5b), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c5c), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c5d), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c5e), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8c5f), LPC_LPT}, { PCI_VDEVICE(INTEL, 0x8cc1), LPC_9S}, { PCI_VDEVICE(INTEL, 0x8cc2), LPC_9S}, { PCI_VDEVICE(INTEL, 0x8cc3), LPC_9S}, { PCI_VDEVICE(INTEL, 0x8cc4), LPC_9S}, { PCI_VDEVICE(INTEL, 0x8cc6), LPC_9S}, { PCI_VDEVICE(INTEL, 0x8d40), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d41), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d42), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d43), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d44), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d45), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d46), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d47), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d48), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d49), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d4a), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d4b), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d4c), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d4d), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d4e), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d4f), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d50), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d51), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d52), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d53), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d54), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d55), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d56), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d57), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d58), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d59), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d5a), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d5b), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d5c), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d5d), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d5e), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x8d5f), LPC_WBG}, { PCI_VDEVICE(INTEL, 0x9c40), LPC_LPT_LP}, { PCI_VDEVICE(INTEL, 0x9c41), LPC_LPT_LP}, { PCI_VDEVICE(INTEL, 0x9c42), LPC_LPT_LP}, { PCI_VDEVICE(INTEL, 0x9c43), LPC_LPT_LP}, { PCI_VDEVICE(INTEL, 0x9c44), LPC_LPT_LP}, { PCI_VDEVICE(INTEL, 0x9c45), LPC_LPT_LP}, { PCI_VDEVICE(INTEL, 0x9c46), LPC_LPT_LP}, { PCI_VDEVICE(INTEL, 0x9c47), LPC_LPT_LP}, { PCI_VDEVICE(INTEL, 0x9cc1), LPC_WPT_LP}, { PCI_VDEVICE(INTEL, 0x9cc2), LPC_WPT_LP}, { PCI_VDEVICE(INTEL, 0x9cc3), LPC_WPT_LP}, { PCI_VDEVICE(INTEL, 0x9cc5), LPC_WPT_LP}, { PCI_VDEVICE(INTEL, 0x9cc6), LPC_WPT_LP}, { PCI_VDEVICE(INTEL, 0x9cc7), LPC_WPT_LP}, { PCI_VDEVICE(INTEL, 0x9cc9), LPC_WPT_LP}, { PCI_VDEVICE(INTEL, 0xa1c1), LPC_LEWISBURG}, { PCI_VDEVICE(INTEL, 0xa1c2), LPC_LEWISBURG}, { PCI_VDEVICE(INTEL, 0xa1c3), LPC_LEWISBURG}, { PCI_VDEVICE(INTEL, 0xa1c4), LPC_LEWISBURG}, { PCI_VDEVICE(INTEL, 0xa1c5), LPC_LEWISBURG}, { PCI_VDEVICE(INTEL, 0xa1c6), LPC_LEWISBURG}, { PCI_VDEVICE(INTEL, 0xa1c7), LPC_LEWISBURG}, { PCI_VDEVICE(INTEL, 0xa242), LPC_LEWISBURG}, { PCI_VDEVICE(INTEL, 0xa243), 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 | 0x2); 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 | 0x80); 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 | 0x10); 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 | 0x2); 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) >= 0x50 && !acpi_check_region(res->start + 0x40, 0x10, "LPC ICH GPIO3")) use_gpio |= 1 << 2; if (!acpi_check_region(res->start + 0x30, 0x10, "LPC ICH GPIO2")) use_gpio |= 1 << 1; ret = acpi_check_region(res->start + 0x00, 0x30, "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 & 0x0000ff80; 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 & 0x0000ff80; 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 & 0x0000ff80; 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 & 0xffffc000; 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 & 0xfffffe00; 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");
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