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linux-pinenote/drivers/mfd/lpc_ich.c
Guenter Roeck 62cf2cdb99 mfd: lpc_ich: Enable GPIO for Panther Point 
Panther Point PCH GPIO configuration is similar to V5 PCHs.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 08:11:15 +01:00

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/*
* 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) 2011 Extreme Engineering Solution, Inc.
* Author: Aaron Sierra <asierra@xes-inc.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License 2 as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* 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)
* document number TBD : Patsburg (PBG)
* document number TBD : DH89xxCC
* document number TBD : Panther Point
* document number TBD : Lynx Point
* document number TBD : Lynx Point-LP
* document number TBD : Wellsburg
* document number TBD : Avoton SoC
* document number TBD : Coleto Creek
* document number TBD : Wildcat Point-LP
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/acpi.h>
#include <linux/pci.h>
#include <linux/mfd/core.h>
#include <linux/mfd/lpc_ich.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 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)])
struct lpc_ich_priv {
int 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 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,
},
};
enum lpc_cells {
LPC_WDT = 0,
LPC_GPIO,
};
static struct mfd_cell lpc_ich_cells[] = {
[LPC_WDT] = {
.name = "iTCO_wdt",
.num_resources = ARRAY_SIZE(wdt_ich_res),
.resources = wdt_ich_res,
.ignore_resource_conflicts = true,
},
[LPC_GPIO] = {
.name = "gpio_ich",
.num_resources = ARRAY_SIZE(gpio_ich_res),
.resources = gpio_ich_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 */
};
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,
},
[LPC_PPT] = {
.name = "Panther Point",
.iTCO_version = 2,
.gpio_version = ICH_V5_GPIO,
},
[LPC_LPT] = {
.name = "Lynx Point",
.iTCO_version = 2,
},
[LPC_LPT_LP] = {
.name = "Lynx Point_LP",
.iTCO_version = 2,
},
[LPC_WBG] = {
.name = "Wellsburg",
.iTCO_version = 2,
},
[LPC_AVN] = {
.name = "Avoton SoC",
.iTCO_version = 3,
.gpio_version = AVOTON_GPIO,
},
[LPC_BAYTRAIL] = {
.name = "Bay Trail SoC",
.iTCO_version = 3,
},
[LPC_COLETO] = {
.name = "Coleto Creek",
.iTCO_version = 2,
},
[LPC_WPT_LP] = {
.name = "Wildcat Point_LP",
.iTCO_version = 2,
},
};
/*
* 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, 0x2410), LPC_ICH},
{ PCI_VDEVICE(INTEL, 0x2420), LPC_ICH0},
{ PCI_VDEVICE(INTEL, 0x2440), LPC_ICH2},
{ PCI_VDEVICE(INTEL, 0x244c), LPC_ICH2M},
{ 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, 0x2450), LPC_CICH},
{ 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, 0x27b8), LPC_ICH7},
{ PCI_VDEVICE(INTEL, 0x27b0), LPC_ICH7DH},
{ PCI_VDEVICE(INTEL, 0x27b9), LPC_ICH7M},
{ PCI_VDEVICE(INTEL, 0x27bd), LPC_ICH7MDH},
{ PCI_VDEVICE(INTEL, 0x27bc), LPC_NM10},
{ PCI_VDEVICE(INTEL, 0x2810), LPC_ICH8},
{ PCI_VDEVICE(INTEL, 0x2812), LPC_ICH8DH},
{ PCI_VDEVICE(INTEL, 0x2814), LPC_ICH8DO},
{ PCI_VDEVICE(INTEL, 0x2815), LPC_ICH8M},
{ PCI_VDEVICE(INTEL, 0x2811), LPC_ICH8ME},
{ PCI_VDEVICE(INTEL, 0x2918), LPC_ICH9},
{ PCI_VDEVICE(INTEL, 0x2916), LPC_ICH9R},
{ PCI_VDEVICE(INTEL, 0x2912), LPC_ICH9DH},
{ PCI_VDEVICE(INTEL, 0x2914), LPC_ICH9DO},
{ PCI_VDEVICE(INTEL, 0x2919), LPC_ICH9M},
{ PCI_VDEVICE(INTEL, 0x2917), LPC_ICH9ME},
{ PCI_VDEVICE(INTEL, 0x3a18), LPC_ICH10},
{ PCI_VDEVICE(INTEL, 0x3a16), LPC_ICH10R},
{ PCI_VDEVICE(INTEL, 0x3a1a), LPC_ICH10D},
{ PCI_VDEVICE(INTEL, 0x3a14), LPC_ICH10DO},
{ 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, 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, 0x2310), LPC_DH89XXCC},
{ 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, 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, 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, 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, 0x1f38), LPC_AVN},
{ PCI_VDEVICE(INTEL, 0x1f39), LPC_AVN},
{ PCI_VDEVICE(INTEL, 0x1f3a), LPC_AVN},
{ PCI_VDEVICE(INTEL, 0x1f3b), LPC_AVN},
{ PCI_VDEVICE(INTEL, 0x0f1c), LPC_BAYTRAIL},
{ PCI_VDEVICE(INTEL, 0x2390), LPC_COLETO},
{ 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},
{ 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, &reg_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, &reg_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, &reg_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, &reg_save);
pci_write_config_byte(dev, priv->actrl_pbase, reg_save | 0x2);
priv->actrl_pbase_save = reg_save;
}
static void lpc_ich_finalize_cell(struct pci_dev *dev, struct mfd_cell *cell)
{
struct lpc_ich_priv *priv = pci_get_drvdata(dev);
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_cells[LPC_GPIO].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_cells[LPC_GPIO].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_cell(dev, &lpc_ich_cells[LPC_GPIO]);
ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_GPIO],
1, NULL, 0, NULL);
gpio_done:
if (acpi_conflict)
pr_warn("Resource conflict(s) found affecting %s\n",
lpc_ich_cells[LPC_GPIO].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;
/* 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_cells[LPC_WDT].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;
}
lpc_ich_finalize_cell(dev, &lpc_ich_cells[LPC_WDT]);
ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_WDT],
1, NULL, 0, NULL);
wdt_done:
return ret;
}
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;
}
/*
* 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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