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-rw-r--r--src/drivers/i2c/sx9310/Kconfig6
-rw-r--r--src/drivers/i2c/sx9310/Makefile.inc1
-rw-r--r--src/drivers/i2c/sx9310/chip.h34
-rw-r--r--src/drivers/i2c/sx9310/registers.h42
-rw-r--r--src/drivers/i2c/sx9310/sx9310.c107
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
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 01:02:41 +0000