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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2017 Intel Corp.
* Copyright 2019 Google LLC
*
* Taken partly from coreboot gpio.c
*/
#define LOG_CATEGORY UCLASS_GPIO
#include <common.h>
#include <dm.h>
#include <dt-structs.h>
#include <log.h>
#include <p2sb.h>
#include <asm/intel_pinctrl.h>
#include <asm-generic/gpio.h>
#include <asm/intel_pinctrl_defs.h>
/**
* struct apl_gpio_platdata - platform data for each device
*
* @dtplat: of-platdata data from C struct
*/
struct apl_gpio_platdata {
#if CONFIG_IS_ENABLED(OF_PLATDATA)
/* Put this first since driver model will copy the data here */
struct dtd_intel_apl_pinctrl dtplat;
#endif
};
static const struct reset_mapping rst_map[] = {
{ .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 },
};
/* Groups for each community */
static const struct pad_group apl_community_n_groups[] = {
INTEL_GPP(N_OFFSET, N_OFFSET, GPIO_31), /* NORTH 0 */
INTEL_GPP(N_OFFSET, GPIO_32, JTAG_TRST_B), /* NORTH 1 */
INTEL_GPP(N_OFFSET, JTAG_TMS, SVID0_CLK), /* NORTH 2 */
};
static const struct pad_group apl_community_w_groups[] = {
INTEL_GPP(W_OFFSET, W_OFFSET, OSC_CLK_OUT_1), /* WEST 0 */
INTEL_GPP(W_OFFSET, OSC_CLK_OUT_2, SUSPWRDNACK),/* WEST 1 */
};
static const struct pad_group apl_community_sw_groups[] = {
INTEL_GPP(SW_OFFSET, SW_OFFSET, SMB_ALERTB), /* SOUTHWEST 0 */
INTEL_GPP(SW_OFFSET, SMB_CLK, LPC_FRAMEB), /* SOUTHWEST 1 */
};
static const struct pad_group apl_community_nw_groups[] = {
INTEL_GPP(NW_OFFSET, NW_OFFSET, PROCHOT_B), /* NORTHWEST 0 */
INTEL_GPP(NW_OFFSET, PMIC_I2C_SCL, GPIO_106), /* NORTHWEST 1 */
INTEL_GPP(NW_OFFSET, GPIO_109, GPIO_123), /* NORTHWEST 2 */
};
/* TODO(sjg@chromium.org): Consider moving this to device tree */
static const struct pad_community apl_gpio_communities[] = {
{
.port = PID_GPIO_N,
.first_pad = N_OFFSET,
.last_pad = SVID0_CLK,
.num_gpi_regs = NUM_N_GPI_REGS,
.gpi_status_offset = NUM_NW_GPI_REGS + NUM_W_GPI_REGS
+ NUM_SW_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 = "GPIO_GPE_N",
.reset_map = rst_map,
.num_reset_vals = ARRAY_SIZE(rst_map),
.groups = apl_community_n_groups,
.num_groups = ARRAY_SIZE(apl_community_n_groups),
}, {
.port = PID_GPIO_NW,
.first_pad = NW_OFFSET,
.last_pad = GPIO_123,
.num_gpi_regs = NUM_NW_GPI_REGS,
.gpi_status_offset = NUM_W_GPI_REGS + NUM_SW_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 = "GPIO_GPE_NW",
.reset_map = rst_map,
.num_reset_vals = ARRAY_SIZE(rst_map),
.groups = apl_community_nw_groups,
.num_groups = ARRAY_SIZE(apl_community_nw_groups),
}, {
.port = PID_GPIO_W,
.first_pad = W_OFFSET,
.last_pad = SUSPWRDNACK,
.num_gpi_regs = NUM_W_GPI_REGS,
.gpi_status_offset = NUM_SW_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 = "GPIO_GPE_W",
.reset_map = rst_map,
.num_reset_vals = ARRAY_SIZE(rst_map),
.groups = apl_community_w_groups,
.num_groups = ARRAY_SIZE(apl_community_w_groups),
}, {
.port = PID_GPIO_SW,
.first_pad = SW_OFFSET,
.last_pad = LPC_FRAMEB,
.num_gpi_regs = NUM_SW_GPI_REGS,
.gpi_status_offset = 0,
.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 = "GPIO_GPE_SW",
.reset_map = rst_map,
.num_reset_vals = ARRAY_SIZE(rst_map),
.groups = apl_community_sw_groups,
.num_groups = ARRAY_SIZE(apl_community_sw_groups),
},
};
static int apl_pinctrl_ofdata_to_platdata(struct udevice *dev)
{
struct p2sb_child_platdata *pplat;
const struct pad_community *comm = NULL;
int i;
#if CONFIG_IS_ENABLED(OF_PLATDATA)
struct apl_gpio_platdata *plat = dev_get_platdata(dev);
int ret;
/*
* It would be nice to do this in the bind() method, but with
* of-platdata binding happens in the order that DM finds things in the
* linker list (i.e. alphabetical order by driver name). So the GPIO
* device may well be bound before its parent (p2sb), and this call
* will fail if p2sb is not bound yet.
*
* TODO(sjg@chromium.org): Add a parent pointer to child devices in dtoc
*/
ret = p2sb_set_port_id(dev, plat->dtplat.intel_p2sb_port_id);
if (ret)
return log_msg_ret("Could not set port id", ret);
#endif
/* Attach this device to its community structure */
pplat = dev_get_parent_plat(dev);
for (i = 0; i < ARRAY_SIZE(apl_gpio_communities); i++) {
if (apl_gpio_communities[i].port == pplat->pid)
comm = &apl_gpio_communities[i];
}
return intel_pinctrl_ofdata_to_platdata(dev, comm, 2);
}
static const struct udevice_id apl_gpio_ids[] = {
{ .compatible = "intel,apl-pinctrl"},
{ }
};
U_BOOT_DRIVER(intel_apl_pinctrl) = {
.name = "intel_apl_pinctrl",
.id = UCLASS_PINCTRL,
.of_match = apl_gpio_ids,
.probe = intel_pinctrl_probe,
.ops = &intel_pinctrl_ops,
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
.bind = dm_scan_fdt_dev,
#endif
.ofdata_to_platdata = apl_pinctrl_ofdata_to_platdata,
.priv_auto = sizeof(struct intel_pinctrl_priv),
.plat_auto = sizeof(struct apl_gpio_platdata),
};
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