diff options
author | Simon Glass <sjg@chromium.org> | 2019-12-08 17:32:08 -0700 |
---|---|---|
committer | Bin Meng <bmeng.cn@gmail.com> | 2019-12-15 11:44:26 +0800 |
commit | 0a6f333e8d1d05c0d8a0e67439d4ebbab885834d (patch) | |
tree | 636a9eed06848fc2e21ef20dcc879914af67cbda /drivers | |
parent | 7656582378a3ff166080713d44cfc6fdc8cec6b0 (diff) |
x86: apl: Add pinctrl driver
Add a driver for the Apollo Lake pinctrl. This mostly makes use of the
common Intel pinctrl support.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/pinctrl/intel/Kconfig | 16 | ||||
-rw-r--r-- | drivers/pinctrl/intel/Makefile | 1 | ||||
-rw-r--r-- | drivers/pinctrl/intel/pinctrl_apl.c | 192 |
3 files changed, 206 insertions, 3 deletions
diff --git a/drivers/pinctrl/intel/Kconfig b/drivers/pinctrl/intel/Kconfig index c01c6244d9..e62a2e0349 100644 --- a/drivers/pinctrl/intel/Kconfig +++ b/drivers/pinctrl/intel/Kconfig @@ -5,12 +5,22 @@ if PINCTRL_INTEL config INTEL_PINCTRL_DUAL_ROUTE_SUPPORT - def_bool y + bool + default y config INTEL_PINCTRL_PADCFG_PADTOL - def_bool n + bool n config INTEL_PINCTRL_IOSTANDBY - def_bool y + bool + default y + +config PINCTRL_INTEL_APL + bool "Support Intel Apollo Lake (APL)" + help + Add support for Intel Apollo Lake pin-control and pin-mux settings. + These are mostly read from the device tree, with the early-pads + property in the host bridge and the pads property in the fsp-s + subnode of the host bridge. endif diff --git a/drivers/pinctrl/intel/Makefile b/drivers/pinctrl/intel/Makefile index bc1aad2c06..3aed8e9663 100644 --- a/drivers/pinctrl/intel/Makefile +++ b/drivers/pinctrl/intel/Makefile @@ -3,3 +3,4 @@ # Copyright 2019 Google LLC obj-y += pinctrl.o +obj-$(CONFIG_PINCTRL_INTEL_APL) += pinctrl_apl.o diff --git a/drivers/pinctrl/intel/pinctrl_apl.c b/drivers/pinctrl/intel/pinctrl_apl.c new file mode 100644 index 0000000000..bd80435ffa --- /dev/null +++ b/drivers/pinctrl/intel/pinctrl_apl.c @@ -0,0 +1,192 @@ +// 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 <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", + .acpi_path = "\\_SB.GPO0", + .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", + .acpi_path = "\\_SB.GPO1", + .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", + .acpi_path = "\\_SB.GPO2", + .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", + .acpi_path = "\\_SB.GPO3", + .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_platdata(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(apl_pinctrl_drv) = { + .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_alloc_size = sizeof(struct intel_pinctrl_priv), + .platdata_auto_alloc_size = sizeof(struct apl_gpio_platdata), +}; |