From f14705153545819b1a134e8c6f33f38190b75c70 Mon Sep 17 00:00:00 2001 From: Seven Lee Date: Wed, 31 Mar 2021 15:57:38 +0800 Subject: src/drivers/generic/nau8315: Add nau8315 support Configure and enable GPIO for speaker amp nau8315. change return acpi string name directly. Signed-off-by: Seven Lee Change-Id: Ie883d65ced3cd95fe318ba0914ed806ff592258d Reviewed-on: https://review.coreboot.org/c/coreboot/+/51971 Tested-by: build bot (Jenkins) Reviewed-by: EricR Lai --- src/drivers/generic/nau8315/Kconfig | 3 ++ src/drivers/generic/nau8315/Makefile.inc | 1 + src/drivers/generic/nau8315/chip.h | 8 ++++ src/drivers/generic/nau8315/nau8315.c | 74 ++++++++++++++++++++++++++++++++ 4 files changed, 86 insertions(+) create mode 100644 src/drivers/generic/nau8315/Kconfig create mode 100644 src/drivers/generic/nau8315/Makefile.inc create mode 100644 src/drivers/generic/nau8315/chip.h create mode 100644 src/drivers/generic/nau8315/nau8315.c (limited to 'src/drivers/generic') diff --git a/src/drivers/generic/nau8315/Kconfig b/src/drivers/generic/nau8315/Kconfig new file mode 100644 index 0000000000..64b12e6e33 --- /dev/null +++ b/src/drivers/generic/nau8315/Kconfig @@ -0,0 +1,3 @@ +config DRIVERS_GENERIC_NAU8315 + bool + depends on HAVE_ACPI_TABLES diff --git a/src/drivers/generic/nau8315/Makefile.inc b/src/drivers/generic/nau8315/Makefile.inc new file mode 100644 index 0000000000..09641892e5 --- /dev/null +++ b/src/drivers/generic/nau8315/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_GENERIC_NAU8315) += nau8315.c diff --git a/src/drivers/generic/nau8315/chip.h b/src/drivers/generic/nau8315/chip.h new file mode 100644 index 0000000000..aa194bb3e9 --- /dev/null +++ b/src/drivers/generic/nau8315/chip.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include + +struct drivers_generic_nau8315_config { + /* ENABLE GPIO */ + struct acpi_gpio enable_gpio; +}; diff --git a/src/drivers/generic/nau8315/nau8315.c b/src/drivers/generic/nau8315/nau8315.c new file mode 100644 index 0000000000..21b8ff9e17 --- /dev/null +++ b/src/drivers/generic/nau8315/nau8315.c @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include +#include +#include +#include +#include +#include +#include "chip.h" + +static void nau8315_fill_ssdt(const struct device *dev) +{ + struct drivers_generic_nau8315_config *config = dev->chip_info; + const char *path; + struct acpi_dp *dp; + + if (!dev->enabled || !config) + return; + + const char *scope = acpi_device_scope(dev); + const char *name = acpi_device_name(dev); + if (!scope || !name) + return; + + /* Device */ + acpigen_write_scope(scope); + acpigen_write_device(name); + + acpigen_write_name_string("_HID", "NVTN2010"); + acpigen_write_name_integer("_UID", 0); + acpigen_write_name_string("_DDN", dev->chip_ops->name); + acpigen_write_STA(acpi_device_status(dev)); + + /* Resources */ + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpi_device_write_gpio(&config->enable_gpio); + acpigen_write_resourcetemplate_footer(); + + /* _DSD for devicetree properties */ + /* This points to the first pin in the first gpio entry in _CRS */ + path = acpi_device_path(dev); + dp = acpi_dp_new_table("_DSD"); + acpi_dp_add_gpio(dp, "enable-gpios", path, 0, 0, + config->enable_gpio.active_low); + acpi_dp_write(dp); + + acpigen_pop_len(); /* Device */ + acpigen_pop_len(); /* Scope */ + + printk(BIOS_INFO, "%s: %s\n", path, dev->chip_ops->name); +} + +static const char *nau8315_acpi_name(const struct device *dev) +{ + return "NVTN"; +} + +static struct device_operations nau8315_ops = { + .read_resources = noop_read_resources, + .set_resources = noop_set_resources, + .acpi_name = nau8315_acpi_name, + .acpi_fill_ssdt = nau8315_fill_ssdt, +}; + +static void nau8315_enable(struct device *dev) +{ + dev->ops = &nau8315_ops; +} + +struct chip_operations drivers_generic_nau8315_ops = { + CHIP_NAME("Nuvoton NAU8315 Amplifier") + .enable_dev = nau8315_enable +}; -- cgit v1.2.3