Rizwan Qureshi (rizwan.qureshi@intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/18063
-gerrit
commit cc4c8d5a1dc846b269ac33f21dffded50923e25d Author: Rizwan Qureshi rizwan.qureshi@intel.com Date: Mon Jan 9 19:00:06 2017 +0530
drivers/i2c/tps68470:[WIP] Add TPS68470 PMIC SSDT generator
Add TPS68470 PMIC SSDT generator
Change-Id: Iaa1dba094a7f791d5b624e545b03b510a4306337 Signed-off-by: Rizwan Qureshi rizwan.qureshi@intel.com --- src/drivers/i2c/tps68470/Kconfig | 2 + src/drivers/i2c/tps68470/Makefile.inc | 1 + src/drivers/i2c/tps68470/chip.h | 11 ++++ src/drivers/i2c/tps68470/tps68470.c | 95 +++++++++++++++++++++++++++++++++++ 4 files changed, 109 insertions(+)
diff --git a/src/drivers/i2c/tps68470/Kconfig b/src/drivers/i2c/tps68470/Kconfig new file mode 100644 index 0000000..75d81dc --- /dev/null +++ b/src/drivers/i2c/tps68470/Kconfig @@ -0,0 +1,2 @@ +config DRIVERS_I2C_TPS68470 + bool diff --git a/src/drivers/i2c/tps68470/Makefile.inc b/src/drivers/i2c/tps68470/Makefile.inc new file mode 100644 index 0000000..3fa4412 --- /dev/null +++ b/src/drivers/i2c/tps68470/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_I2C_TPS68470) += tps68470.c diff --git a/src/drivers/i2c/tps68470/chip.h b/src/drivers/i2c/tps68470/chip.h new file mode 100644 index 0000000..5b511d2 --- /dev/null +++ b/src/drivers/i2c/tps68470/chip.h @@ -0,0 +1,11 @@ +#include <arch/acpi_device.h> + +#define TPS68470_MAX_CLDB_BUF 32 + +struct drivers_i2c_tps68470_config { + + /* I2C Bus Frequency in Hertz (default 400kHz) */ + unsigned bus_speed; + + uint8_t cldb_buf[TPS68470_MAX_CLDB_BUF]; +}; diff --git a/src/drivers/i2c/tps68470/tps68470.c b/src/drivers/i2c/tps68470/tps68470.c new file mode 100644 index 0000000..1c0eab3 --- /dev/null +++ b/src/drivers/i2c/tps68470/tps68470.c @@ -0,0 +1,95 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2016 Google Inc. + * + * 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.h> +#include <arch/acpi_device.h> +#include <arch/acpigen.h> +#include <console/console.h> +#include <device/i2c.h> +#include <device/device.h> +#include <device/path.h> +#include <stdint.h> +#include <string.h> +#include "chip.h" + +#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) + +#define TPS68470_ACPI_NAME "PMIC" + +static void tps68470_fill_ssdt(struct device *dev) +{ + struct drivers_i2c_tps68470_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->bus_speed ? : I2C_SPEED_FAST, + .resource = scope, + }; + //struct acpi_dp *dp = NULL; + + if (!dev->enabled || !scope) + return; + + /* Device */ + acpigen_write_scope(scope); + acpigen_write_device(acpi_device_name(dev)); + acpigen_write_name_string("_HID", "INT3472"); + acpigen_write_name_integer("_UID", 0); + acpigen_write_name_string("_DDN", dev->chip_ops->name); + acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); + + /* Resources */ + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpi_device_write_i2c(&i2c); + acpigen_write_resourcetemplate_footer(); + + /* Device Properties */ + acpigen_write_method_serialized("CLDB",0); + acpigen_write_return_byte_buffer(config->cldb_buf, + TPS68470_MAX_CLDB_BUF); + + acpigen_pop_len(); /* Method */ + acpigen_pop_len(); /* Device */ + acpigen_pop_len(); /* Scope */ + +} + +static const char *tps68470_acpi_name(struct device *dev) +{ + return TPS68470_ACPI_NAME; +} +#endif + +static struct device_operations tps68470_ops = { + .read_resources = DEVICE_NOOP, + .set_resources = DEVICE_NOOP, + .enable_resources = DEVICE_NOOP, +#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) + .acpi_name = &tps68470_acpi_name, + .acpi_fill_ssdt_generator = &tps68470_fill_ssdt, +#endif +}; + +static void tps68470_enable(struct device *dev) +{ + dev->ops = &tps68470_ops; +} + +struct chip_operations drivers_i2c_tps68470_ops = { + CHIP_NAME("TPS 68470 PMIC") + .enable_dev = &tps68470_enable +};