diff options
| -rw-r--r-- | arch/x86/include/asm/arch-coreboot/gpio.h | 5 | ||||
| -rw-r--r-- | arch/x86/include/asm/arch-ivybridge/pch.h | 16 | ||||
| -rw-r--r-- | arch/x86/include/asm/global_data.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/gpio.h | 142 | ||||
| -rw-r--r-- | drivers/gpio/intel_ich6_gpio.c | 79 |
5 files changed, 227 insertions, 16 deletions
diff --git a/arch/x86/include/asm/arch-coreboot/gpio.h b/arch/x86/include/asm/arch-coreboot/gpio.h index 3ec1816..4951a8c 100644 --- a/arch/x86/include/asm/arch-coreboot/gpio.h +++ b/arch/x86/include/asm/arch-coreboot/gpio.h @@ -7,9 +7,4 @@ #ifndef _X86_ARCH_GPIO_H_ #define _X86_ARCH_GPIO_H_ -struct ich6_bank_platdata { - uint32_t base_addr; - const char *bank_name; -}; - #endif /* _X86_ARCH_GPIO_H_ */ diff --git a/arch/x86/include/asm/arch-ivybridge/pch.h b/arch/x86/include/asm/arch-ivybridge/pch.h index 290a737..ae338e3 100644 --- a/arch/x86/include/asm/arch-ivybridge/pch.h +++ b/arch/x86/include/asm/arch-ivybridge/pch.h @@ -142,6 +142,22 @@ #define FD2 0x3428 /* 32bit */ #define CG 0x341c /* 32bit */ +/* ICH7 GPIOBASE */ +#define GPIO_USE_SEL 0x00 +#define GP_IO_SEL 0x04 +#define GP_LVL 0x0c +#define GPO_BLINK 0x18 +#define GPI_INV 0x2c +#define GPIO_USE_SEL2 0x30 +#define GP_IO_SEL2 0x34 +#define GP_LVL2 0x38 +#define GPIO_USE_SEL3 0x40 +#define GP_IO_SEL3 0x44 +#define GP_LVL3 0x48 +#define GP_RST_SEL1 0x60 +#define GP_RST_SEL2 0x64 +#define GP_RST_SEL3 0x68 + /* ICH7 PMBASE */ #define PM1_STS 0x00 #define WAK_STS (1 << 15) diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h index ff9574c..4ea46d7 100644 --- a/arch/x86/include/asm/global_data.h +++ b/arch/x86/include/asm/global_data.h @@ -33,6 +33,7 @@ struct arch_global_data { uint32_t bist; /* Built-in self test value */ struct pci_controller *hose; /* PCI hose for early use */ enum pei_boot_mode_t pei_boot_mode; + const struct pch_gpio_map *gpio_map; /* board GPIO map */ }; #endif diff --git a/arch/x86/include/asm/gpio.h b/arch/x86/include/asm/gpio.h index 8bda414..5540d42 100644 --- a/arch/x86/include/asm/gpio.h +++ b/arch/x86/include/asm/gpio.h @@ -1,12 +1,152 @@ /* * Copyright (c) 2012, Google Inc. All rights reserved. - * SPDX-License-Identifier: GPL-2.0+ + * SPDX-License-Identifier: GPL-2.0 */ #ifndef _X86_GPIO_H_ #define _X86_GPIO_H_ +#include <linux/compiler.h> #include <asm/arch/gpio.h> #include <asm-generic/gpio.h> +struct ich6_bank_platdata { + uint32_t base_addr; + const char *bank_name; +}; + +#define GPIO_MODE_NATIVE 0 +#define GPIO_MODE_GPIO 1 +#define GPIO_MODE_NONE 1 + +#define GPIO_DIR_OUTPUT 0 +#define GPIO_DIR_INPUT 1 + +#define GPIO_NO_INVERT 0 +#define GPIO_INVERT 1 + +#define GPIO_LEVEL_LOW 0 +#define GPIO_LEVEL_HIGH 1 + +#define GPIO_NO_BLINK 0 +#define GPIO_BLINK 1 + +#define GPIO_RESET_PWROK 0 +#define GPIO_RESET_RSMRST 1 + +struct pch_gpio_set1 { + u32 gpio0:1; + u32 gpio1:1; + u32 gpio2:1; + u32 gpio3:1; + u32 gpio4:1; + u32 gpio5:1; + u32 gpio6:1; + u32 gpio7:1; + u32 gpio8:1; + u32 gpio9:1; + u32 gpio10:1; + u32 gpio11:1; + u32 gpio12:1; + u32 gpio13:1; + u32 gpio14:1; + u32 gpio15:1; + u32 gpio16:1; + u32 gpio17:1; + u32 gpio18:1; + u32 gpio19:1; + u32 gpio20:1; + u32 gpio21:1; + u32 gpio22:1; + u32 gpio23:1; + u32 gpio24:1; + u32 gpio25:1; + u32 gpio26:1; + u32 gpio27:1; + u32 gpio28:1; + u32 gpio29:1; + u32 gpio30:1; + u32 gpio31:1; +} __packed; + +struct pch_gpio_set2 { + u32 gpio32:1; + u32 gpio33:1; + u32 gpio34:1; + u32 gpio35:1; + u32 gpio36:1; + u32 gpio37:1; + u32 gpio38:1; + u32 gpio39:1; + u32 gpio40:1; + u32 gpio41:1; + u32 gpio42:1; + u32 gpio43:1; + u32 gpio44:1; + u32 gpio45:1; + u32 gpio46:1; + u32 gpio47:1; + u32 gpio48:1; + u32 gpio49:1; + u32 gpio50:1; + u32 gpio51:1; + u32 gpio52:1; + u32 gpio53:1; + u32 gpio54:1; + u32 gpio55:1; + u32 gpio56:1; + u32 gpio57:1; + u32 gpio58:1; + u32 gpio59:1; + u32 gpio60:1; + u32 gpio61:1; + u32 gpio62:1; + u32 gpio63:1; +} __packed; + +struct pch_gpio_set3 { + u32 gpio64:1; + u32 gpio65:1; + u32 gpio66:1; + u32 gpio67:1; + u32 gpio68:1; + u32 gpio69:1; + u32 gpio70:1; + u32 gpio71:1; + u32 gpio72:1; + u32 gpio73:1; + u32 gpio74:1; + u32 gpio75:1; +} __packed; + +/* + * This hilariously complex structure came from Coreboot. The + * setup_pch_gpios() function uses it. It could be move to device tree, or + * adjust to use masks instead of bitfields. + */ +struct pch_gpio_map { + struct { + const struct pch_gpio_set1 *mode; + const struct pch_gpio_set1 *direction; + const struct pch_gpio_set1 *level; + const struct pch_gpio_set1 *reset; + const struct pch_gpio_set1 *invert; + const struct pch_gpio_set1 *blink; + } set1; + struct { + const struct pch_gpio_set2 *mode; + const struct pch_gpio_set2 *direction; + const struct pch_gpio_set2 *level; + const struct pch_gpio_set2 *reset; + } set2; + struct { + const struct pch_gpio_set3 *mode; + const struct pch_gpio_set3 *direction; + const struct pch_gpio_set3 *level; + const struct pch_gpio_set3 *reset; + } set3; +}; + +void ich_gpio_set_gpio_map(const struct pch_gpio_map *map); + #endif /* _X86_GPIO_H_ */ diff --git a/drivers/gpio/intel_ich6_gpio.c b/drivers/gpio/intel_ich6_gpio.c index d3381b0..b095d17 100644 --- a/drivers/gpio/intel_ich6_gpio.c +++ b/drivers/gpio/intel_ich6_gpio.c @@ -33,6 +33,11 @@ #include <pci.h> #include <asm/gpio.h> #include <asm/io.h> +#include <asm/pci.h> +#ifdef CONFIG_X86_RESET_VECTOR +#include <asm/arch/pch.h> +#define SUPPORT_GPIO_SETUP +#endif #define GPIO_PER_BANK 32 @@ -46,6 +51,53 @@ struct ich6_bank_priv { uint32_t lvl; }; +#ifdef SUPPORT_GPIO_SETUP +static void setup_pch_gpios(const struct pch_gpio_map *gpio) +{ + u16 gpiobase = pci_read_config16(PCH_LPC_DEV, GPIO_BASE) & 0xfffc; + + /* GPIO Set 1 */ + if (gpio->set1.level) + outl(*((u32 *)gpio->set1.level), gpiobase + GP_LVL); + if (gpio->set1.mode) + outl(*((u32 *)gpio->set1.mode), gpiobase + GPIO_USE_SEL); + if (gpio->set1.direction) + outl(*((u32 *)gpio->set1.direction), gpiobase + GP_IO_SEL); + if (gpio->set1.reset) + outl(*((u32 *)gpio->set1.reset), gpiobase + GP_RST_SEL1); + if (gpio->set1.invert) + outl(*((u32 *)gpio->set1.invert), gpiobase + GPI_INV); + if (gpio->set1.blink) + outl(*((u32 *)gpio->set1.blink), gpiobase + GPO_BLINK); + + /* GPIO Set 2 */ + if (gpio->set2.level) + outl(*((u32 *)gpio->set2.level), gpiobase + GP_LVL2); + if (gpio->set2.mode) + outl(*((u32 *)gpio->set2.mode), gpiobase + GPIO_USE_SEL2); + if (gpio->set2.direction) + outl(*((u32 *)gpio->set2.direction), gpiobase + GP_IO_SEL2); + if (gpio->set2.reset) + outl(*((u32 *)gpio->set2.reset), gpiobase + GP_RST_SEL2); + + /* GPIO Set 3 */ + if (gpio->set3.level) + outl(*((u32 *)gpio->set3.level), gpiobase + GP_LVL3); + if (gpio->set3.mode) + outl(*((u32 *)gpio->set3.mode), gpiobase + GPIO_USE_SEL3); + if (gpio->set3.direction) + outl(*((u32 *)gpio->set3.direction), gpiobase + GP_IO_SEL3); + if (gpio->set3.reset) + outl(*((u32 *)gpio->set3.reset), gpiobase + GP_RST_SEL3); +} + +/* TODO: Move this to device tree, or platform data */ +void ich_gpio_set_gpio_map(const struct pch_gpio_map *map) +{ + gd->arch.gpio_map = map; +} +#endif /* SUPPORT_GPIO_SETUP */ + static int gpio_ich6_ofdata_to_platdata(struct udevice *dev) { struct ich6_bank_platdata *plat = dev_get_platdata(dev); @@ -60,13 +112,13 @@ static int gpio_ich6_ofdata_to_platdata(struct udevice *dev) pci_dev = PCI_BDF(0, 0x1f, 0); /* Is the device present? */ - pci_read_config_word(pci_dev, PCI_VENDOR_ID, &tmpword); + tmpword = pci_read_config16(pci_dev, PCI_VENDOR_ID); if (tmpword != PCI_VENDOR_ID_INTEL) { debug("%s: wrong VendorID\n", __func__); return -ENODEV; } - pci_read_config_word(pci_dev, PCI_DEVICE_ID, &tmpword); + tmpword = pci_read_config16(pci_dev, PCI_DEVICE_ID); debug("Found %04x:%04x\n", PCI_VENDOR_ID_INTEL, tmpword); /* * We'd like to validate the Device ID too, but pretty much any @@ -76,34 +128,34 @@ static int gpio_ich6_ofdata_to_platdata(struct udevice *dev) */ /* I/O should already be enabled (it's a RO bit). */ - pci_read_config_word(pci_dev, PCI_COMMAND, &tmpword); + tmpword = pci_read_config16(pci_dev, PCI_COMMAND); if (!(tmpword & PCI_COMMAND_IO)) { debug("%s: device IO not enabled\n", __func__); return -ENODEV; } /* Header Type must be normal (bits 6-0 only; see spec.) */ - pci_read_config_byte(pci_dev, PCI_HEADER_TYPE, &tmpbyte); + tmpbyte = pci_read_config8(pci_dev, PCI_HEADER_TYPE); if ((tmpbyte & 0x7f) != PCI_HEADER_TYPE_NORMAL) { debug("%s: invalid Header type\n", __func__); return -ENODEV; } /* Base Class must be a bridge device */ - pci_read_config_byte(pci_dev, PCI_CLASS_CODE, &tmpbyte); + tmpbyte = pci_read_config8(pci_dev, PCI_CLASS_CODE); if (tmpbyte != PCI_CLASS_CODE_BRIDGE) { debug("%s: invalid class\n", __func__); return -ENODEV; } /* Sub Class must be ISA */ - pci_read_config_byte(pci_dev, PCI_CLASS_SUB_CODE, &tmpbyte); + tmpbyte = pci_read_config8(pci_dev, PCI_CLASS_SUB_CODE); if (tmpbyte != PCI_CLASS_SUB_CODE_BRIDGE_ISA) { debug("%s: invalid subclass\n", __func__); return -ENODEV; } /* Programming Interface must be 0x00 (no others exist) */ - pci_read_config_byte(pci_dev, PCI_CLASS_PROG, &tmpbyte); + tmpbyte = pci_read_config8(pci_dev, PCI_CLASS_PROG); if (tmpbyte != 0x00) { debug("%s: invalid interface type\n", __func__); return -ENODEV; @@ -114,7 +166,7 @@ static int gpio_ich6_ofdata_to_platdata(struct udevice *dev) * that it was unused (or undocumented). Check that it looks * okay: not all ones or zeros, and mapped to I/O space (bit 0). */ - pci_read_config_dword(pci_dev, PCI_CFG_GPIOBASE, &tmplong); + tmplong = pci_read_config32(pci_dev, PCI_CFG_GPIOBASE); if (tmplong == 0x00000000 || tmplong == 0xffffffff || !(tmplong & 0x00000001)) { debug("%s: unexpected GPIOBASE value\n", __func__); @@ -140,12 +192,18 @@ static int gpio_ich6_ofdata_to_platdata(struct udevice *dev) return 0; } -int ich6_gpio_probe(struct udevice *dev) +static int ich6_gpio_probe(struct udevice *dev) { struct ich6_bank_platdata *plat = dev_get_platdata(dev); struct gpio_dev_priv *uc_priv = dev->uclass_priv; struct ich6_bank_priv *bank = dev_get_priv(dev); +#ifdef SUPPORT_GPIO_SETUP + if (gd->arch.gpio_map) { + setup_pch_gpios(gd->arch.gpio_map); + gd->arch.gpio_map = NULL; + } +#endif uc_priv->gpio_count = GPIO_PER_BANK; uc_priv->bank_name = plat->bank_name; bank->use_sel = plat->base_addr; @@ -155,7 +213,8 @@ int ich6_gpio_probe(struct udevice *dev) return 0; } -int ich6_gpio_request(struct udevice *dev, unsigned offset, const char *label) +static int ich6_gpio_request(struct udevice *dev, unsigned offset, + const char *label) { struct ich6_bank_priv *bank = dev_get_priv(dev); u32 tmplong; |