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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 - 2017 Intel Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
#include <intelblocks/gpio.h>
#include <intelblocks/pcr.h>
#include <soc/pcr_ids.h>
#include <soc/pmc.h>
static const struct reset_mapping rst_map[] = {
{ .logical = PAD_CFG0_LOGICAL_RESET_RSMRST, .chipset = 0U << 30 },
{ .logical = PAD_CFG0_LOGICAL_RESET_DEEP, .chipset = 1U << 30 },
{ .logical = PAD_CFG0_LOGICAL_RESET_PLTRST, .chipset = 2U << 30 },
};
static const struct reset_mapping rst_map_com0[] = {
{ .logical = PAD_CFG0_LOGICAL_RESET_PWROK, .chipset = 0U << 30 },
{ .logical = PAD_CFG0_LOGICAL_RESET_DEEP, .chipset = 1U << 30 },
{ .logical = PAD_CFG0_LOGICAL_RESET_PLTRST, .chipset = 2U << 30 },
{ .logical = PAD_CFG0_LOGICAL_RESET_RSMRST, .chipset = 3U << 30 },
};
/*
* The GPIO driver for Cannonlake on Windows/Linux expects 32 GPIOs per pad
* group, regardless of whether or not there is a physical pad for each
* exposed GPIO number.
*
* This results in the OS having a sparse GPIO map, and devices that need
* to export an ACPI GPIO must use the OS expected number.
*
* Not all pins are usable as GPIO and those groups do not have a pad base.
*
* This layout matches the Linux kernel pinctrl map for CNL-LP at:
* linux/drivers/pinctrl/intel/pinctrl-cannonlake.c
*/
static const struct pad_group cnl_community0_groups[] = {
INTEL_GPP_BASE(GPP_A0, GPP_A0, GPIO_RSVD_0, 0), /* GPP_A */
INTEL_GPP_BASE(GPP_A0, GPP_B0, GPIO_RSVD_2, 32), /* GPP_B */
INTEL_GPP_BASE(GPP_A0, GPP_G0, GPP_G7, 64), /* GPP_G */
INTEL_GPP(GPP_A0, GPIO_RSVD_3, GPIO_RSVD_11), /* SPI */
};
static const struct pad_group cnl_community1_groups[] = {
INTEL_GPP_BASE(GPP_D0, GPP_D0, GPIO_RSVD_12, 96), /* GPP_D */
INTEL_GPP_BASE(GPP_D0, GPP_F0, GPP_F23, 128), /* GPP_F */
INTEL_GPP_BASE(GPP_D0, GPP_H0, GPP_H23, 160), /* GPP_H */
INTEL_GPP_BASE(GPP_D0, CNV_BTEN, vSD3_CD_B, 192), /* VGPIO */
};
/* This community is not visible to the OS */
static const struct pad_group cnl_community2_groups[] = {
INTEL_GPP(GPD0, GPD0, GPD11), /* GPD */
};
/* This community is not visible to the OS */
static const struct pad_group cnl_community3_groups[] = {
INTEL_GPP(HDA_BCLK, HDA_BCLK, SSP1_TXD), /* AZA */
INTEL_GPP(HDA_BCLK, GPIO_RSVD_28, GPIO_RSVD_38), /* CPU */
};
static const struct pad_group cnl_community4_groups[] = {
INTEL_GPP_BASE(GPP_C0, GPP_C0, GPP_C23, 256), /* GPP_C */
INTEL_GPP_BASE(GPP_C0, GPP_E0, GPP_E23, 288), /* GPP_E */
INTEL_GPP(GPP_C0, GPIO_RSVD_13, GPIO_RSVD_21), /* JTAG */
INTEL_GPP(GPP_C0, GPIO_RSVD_22, GPIO_RSVD_27), /* HVMOS */
};
static const struct pad_community cnl_communities[] = {
{ /* GPP A, B, G, SPI */
.port = PID_GPIOCOM0,
.first_pad = GPP_A0,
.last_pad = GPIO_RSVD_11,
.num_gpi_regs = NUM_GPIO_COM0_GPI_REGS,
.pad_cfg_base = PAD_CFG_BASE,
.host_own_reg_0 = HOSTSW_OWN_REG_0,
.gpi_int_sts_reg_0 = GPI_INT_STS_0,
.gpi_int_en_reg_0 = GPI_INT_EN_0,
.gpi_smi_sts_reg_0 = GPI_SMI_STS_0,
.gpi_smi_en_reg_0 = GPI_SMI_EN_0,
.max_pads_per_group = GPIO_MAX_NUM_PER_GROUP,
.name = "GPP_ABG",
.acpi_path = "\\_SB.PCI0.GPIO",
.reset_map = rst_map_com0,
.num_reset_vals = ARRAY_SIZE(rst_map_com0),
.groups = cnl_community0_groups,
.num_groups = ARRAY_SIZE(cnl_community0_groups),
}, { /* GPP D, F, H, VGPIO */
.port = PID_GPIOCOM1,
.first_pad = GPP_D0,
.last_pad = vSD3_CD_B,
.num_gpi_regs = NUM_GPIO_COM1_GPI_REGS,
.pad_cfg_base = PAD_CFG_BASE,
.host_own_reg_0 = HOSTSW_OWN_REG_0,
.gpi_int_sts_reg_0 = GPI_INT_STS_0,
.gpi_int_en_reg_0 = GPI_INT_EN_0,
.gpi_smi_sts_reg_0 = GPI_SMI_STS_0,
.gpi_smi_en_reg_0 = GPI_SMI_EN_0,
.max_pads_per_group = GPIO_MAX_NUM_PER_GROUP,
.name = "GPP_DFH",
.acpi_path = "\\_SB.PCI0.GPIO",
.reset_map = rst_map,
.num_reset_vals = ARRAY_SIZE(rst_map),
.groups = cnl_community1_groups,
.num_groups = ARRAY_SIZE(cnl_community1_groups),
}, { /* GPD */
.port = PID_GPIOCOM2,
.first_pad = GPD0,
.last_pad = GPD11,
.num_gpi_regs = NUM_GPIO_COM2_GPI_REGS,
.pad_cfg_base = PAD_CFG_BASE,
.host_own_reg_0 = HOSTSW_OWN_REG_0,
.gpi_int_sts_reg_0 = GPI_INT_STS_0,
.gpi_int_en_reg_0 = GPI_INT_EN_0,
.gpi_smi_sts_reg_0 = GPI_SMI_STS_0,
.gpi_smi_en_reg_0 = GPI_SMI_EN_0,
.max_pads_per_group = GPIO_MAX_NUM_PER_GROUP,
.name = "GPD",
.acpi_path = "\\_SB.PCI0.GPIO",
.reset_map = rst_map,
.num_reset_vals = ARRAY_SIZE(rst_map),
.groups = cnl_community2_groups,
.num_groups = ARRAY_SIZE(cnl_community2_groups),
}, { /* AZA, CPU */
.port = PID_GPIOCOM3,
.first_pad = HDA_BCLK,
.last_pad = GPIO_RSVD_38,
.num_gpi_regs = NUM_GPIO_COM3_GPI_REGS,
.pad_cfg_base = PAD_CFG_BASE,
.host_own_reg_0 = HOSTSW_OWN_REG_0,
.gpi_int_sts_reg_0 = GPI_INT_STS_0,
.gpi_int_en_reg_0 = GPI_INT_EN_0,
.gpi_smi_sts_reg_0 = GPI_SMI_STS_0,
.gpi_smi_en_reg_0 = GPI_SMI_EN_0,
.max_pads_per_group = GPIO_MAX_NUM_PER_GROUP,
.name = "GP_AC",
.acpi_path = "\\_SB.PCI0.GPIO",
.reset_map = rst_map,
.num_reset_vals = ARRAY_SIZE(rst_map),
.groups = cnl_community3_groups,
.num_groups = ARRAY_SIZE(cnl_community3_groups),
}, { /* GPP C, E, JTAG, HVMOS */
.port = PID_GPIOCOM4,
.first_pad = GPP_C0,
.last_pad = GPIO_RSVD_27,
.num_gpi_regs = NUM_GPIO_COM4_GPI_REGS,
.pad_cfg_base = PAD_CFG_BASE,
.host_own_reg_0 = HOSTSW_OWN_REG_0,
.gpi_int_sts_reg_0 = GPI_INT_STS_0,
.gpi_int_en_reg_0 = GPI_INT_EN_0,
.gpi_smi_sts_reg_0 = GPI_SMI_STS_0,
.gpi_smi_en_reg_0 = GPI_SMI_EN_0,
.max_pads_per_group = GPIO_MAX_NUM_PER_GROUP,
.name = "GPP_CEJ",
.acpi_path = "\\_SB.PCI0.GPIO",
.reset_map = rst_map,
.num_reset_vals = ARRAY_SIZE(rst_map),
.groups = cnl_community4_groups,
.num_groups = ARRAY_SIZE(cnl_community4_groups),
}
};
const struct pad_community *soc_gpio_get_community(size_t *num_communities)
{
*num_communities = ARRAY_SIZE(cnl_communities);
return cnl_communities;
}
const struct pmc_to_gpio_route *soc_pmc_gpio_routes(size_t *num)
{
static const struct pmc_to_gpio_route routes[] = {
{ PMC_GPP_A, GPP_A },
{ PMC_GPP_B, GPP_B },
{ PMC_GPP_C, GPP_C },
{ PMC_GPP_D, GPP_D },
{ PMC_GPP_E, GPP_E },
{ PMC_GPP_F, GPP_F },
{ PMC_GPP_G, GPP_G },
{ PMC_GPP_H, GPP_H },
{ PMC_GPD, GPD },
};
*num = ARRAY_SIZE(routes);
return routes;
}
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