diff options
| -rw-r--r-- | src/drivers/i2c/sx9310/Kconfig | 6 | ||||
| -rw-r--r-- | src/drivers/i2c/sx9310/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/i2c/sx9310/chip.h | 34 | ||||
| -rw-r--r-- | src/drivers/i2c/sx9310/registers.h | 42 | ||||
| -rw-r--r-- | src/drivers/i2c/sx9310/sx9310.c | 107 |
5 files changed, 190 insertions, 0 deletions
diff --git a/src/drivers/i2c/sx9310/Kconfig b/src/drivers/i2c/sx9310/Kconfig new file mode 100644 index 0000000000..bfa98e1cb8 --- /dev/null +++ b/src/drivers/i2c/sx9310/Kconfig @@ -0,0 +1,6 @@ +config DRIVERS_I2C_SX9310 + bool + default n + depends on HAVE_ACPI_TABLES + help + Board has a Semtech SX9310 proximity sensor. diff --git a/src/drivers/i2c/sx9310/Makefile.inc b/src/drivers/i2c/sx9310/Makefile.inc new file mode 100644 index 0000000000..0516df92f7 --- /dev/null +++ b/src/drivers/i2c/sx9310/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_I2C_SX9310) += sx9310.c diff --git a/src/drivers/i2c/sx9310/chip.h b/src/drivers/i2c/sx9310/chip.h new file mode 100644 index 0000000000..2799f5bb99 --- /dev/null +++ b/src/drivers/i2c/sx9310/chip.h @@ -0,0 +1,34 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2018 Google LLC + * + * 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; version 2 of the License. + * + * 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. + */ + +#ifndef __DRIVERS_I2C_SX9310_CHIP_H__ +#define __DRIVERS_I2C_SX9310_CHIP_H__ + +#include <arch/acpi_device.h> +#include <device/i2c_simple.h> + +#define REGISTER(NAME) uint8_t NAME + +struct drivers_i2c_sx9310_config { + const char *desc; /* Device Description */ + unsigned int uid; /* ACPI _UID */ + enum i2c_speed speed; /* Bus speed in Hz, default is I2C_SPEED_FAST */ + struct acpi_irq irq; /* Interrupt */ +#include "registers.h" +}; + +#undef REGISTER + +#endif /* __DRIVERS_I2C_SX9310_CHIP_H__ */ diff --git a/src/drivers/i2c/sx9310/registers.h b/src/drivers/i2c/sx9310/registers.h new file mode 100644 index 0000000000..fb6c764aa8 --- /dev/null +++ b/src/drivers/i2c/sx9310/registers.h @@ -0,0 +1,42 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2018 Google LLC + * + * 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; version 2 of the License. + * + * 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. + */ + +#ifndef REGISTER +#error "define REGISTER(NAME) before including this file" +#endif + +REGISTER(reg_prox_ctrl0); +REGISTER(reg_prox_ctrl1); +REGISTER(reg_prox_ctrl2); +REGISTER(reg_prox_ctrl3); +REGISTER(reg_prox_ctrl4); +REGISTER(reg_prox_ctrl5); +REGISTER(reg_prox_ctrl6); +REGISTER(reg_prox_ctrl7); +REGISTER(reg_prox_ctrl8); +REGISTER(reg_prox_ctrl9); +REGISTER(reg_prox_ctrl10); +REGISTER(reg_prox_ctrl11); +REGISTER(reg_prox_ctrl12); +REGISTER(reg_prox_ctrl13); +REGISTER(reg_prox_ctrl14); +REGISTER(reg_prox_ctrl15); +REGISTER(reg_prox_ctrl16); +REGISTER(reg_prox_ctrl17); +REGISTER(reg_prox_ctrl18); +REGISTER(reg_prox_ctrl19); +REGISTER(reg_sar_ctrl0); +REGISTER(reg_sar_ctrl1); +REGISTER(reg_sar_ctrl2); diff --git a/src/drivers/i2c/sx9310/sx9310.c b/src/drivers/i2c/sx9310/sx9310.c new file mode 100644 index 0000000000..7da87c480a --- /dev/null +++ b/src/drivers/i2c/sx9310/sx9310.c @@ -0,0 +1,107 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2018 Google LLC + * + * 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; version 2 of the License. + * + * 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 <arch/acpi_device.h> +#include <arch/acpigen.h> +#include <device/i2c_simple.h> +#include <device/device.h> +#include <device/path.h> +#include <stdint.h> +#include <string.h> +#include "chip.h" + +#define I2C_SX9310_ACPI_ID "SX9310" +#define I2C_SX9310_ACPI_NAME "Semtech SX9310" + +#define REGISTER(NAME) acpi_dp_add_integer(dsd, \ + I2C_SX9310_ACPI_ID "," #NAME, \ + config->NAME) + +static void i2c_sx9310_fill_ssdt(struct device *dev) +{ + struct drivers_i2c_sx9310_config *config = dev->chip_info; + const char *scope = acpi_device_scope(dev); + struct acpi_i2c i2c = { + .address = dev->path.i2c.device, + .mode_10bit = dev->path.i2c.mode_10bit, + .speed = config->speed ? : I2C_SPEED_FAST, + .resource = scope, + }; + struct acpi_dp *dsd; + + if (!dev->enabled || !scope || !config) + return; + + /* Device */ + acpigen_write_scope(scope); + acpigen_write_device(acpi_device_name(dev)); + acpigen_write_name_string("_HID", I2C_SX9310_ACPI_ID); + acpigen_write_name_integer("_UID", config->uid); + acpigen_write_name_string("_DDN", config->desc); + acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); + + /* Resources */ + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpi_device_write_i2c(&i2c); + acpi_device_write_interrupt(&config->irq); + acpigen_write_resourcetemplate_footer(); + + /* DSD */ + dsd = acpi_dp_new_table("_DSD"); +#include "registers.h" + acpi_dp_write(dsd); + + acpigen_pop_len(); /* Device */ + acpigen_pop_len(); /* Scope */ +} + +#undef REGISTER + +static const char *i2c_sx9310_acpi_name(const struct device *dev) +{ + static char name[5]; + + snprintf(name, sizeof(name), "D%03.3X", dev->path.i2c.device); + return name; +} + +static struct device_operations i2c_sx9310_ops = { + .read_resources = DEVICE_NOOP, + .set_resources = DEVICE_NOOP, + .enable_resources = DEVICE_NOOP, + .acpi_name = &i2c_sx9310_acpi_name, + .acpi_fill_ssdt_generator = &i2c_sx9310_fill_ssdt, +}; + +static void i2c_sx9310_enable(struct device *dev) +{ + struct drivers_i2c_sx9310_config *config = dev->chip_info; + + if (!config) { + dev->enabled = 0; + return; + } + + dev->ops = &i2c_sx9310_ops; + + if (config->desc) + dev->name = config->desc; +} + +struct chip_operations drivers_i2c_sx9310_ops = { + CHIP_NAME(I2C_SX9310_ACPI_NAME) + .enable_dev = &i2c_sx9310_enable +}; |