From 29f351e7dff7c1a0a0ab86a3edb05801a8a14652 Mon Sep 17 00:00:00 2001 From: Harsha Priya Date: Fri, 1 Jul 2016 11:53:05 -0700 Subject: [PATCH] soc/intel/apollolake: Add Audio DSP device Add the Audio DSP device for apollolake as a PCI driver with a static scan_bus handler so generic devices can be declared under it. This is for devices like the Maxim 98357A which is connected on the I2S bus for data but has no control channel bus and instead just has a GPIO for channel selection and power down control and needs to describe that GPIO connection to the OS via ACPI. Change-Id: Icb97ccf7d6a9034877614d49166bc9e4fe659b12 Signed-off-by: Harsha Priya Reviewed-on: https://review.coreboot.org/15528 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/soc/intel/apollolake/Makefile.inc | 1 + src/soc/intel/apollolake/dsp.c | 32 +++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) create mode 100644 src/soc/intel/apollolake/dsp.c diff --git a/src/soc/intel/apollolake/Makefile.inc b/src/soc/intel/apollolake/Makefile.inc index 9fbb82d975..8dacdabbd5 100644 --- a/src/soc/intel/apollolake/Makefile.inc +++ b/src/soc/intel/apollolake/Makefile.inc @@ -44,6 +44,7 @@ smm-y += uart_early.c ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c ramstage-y += cpu.c ramstage-y += chip.c +ramstage-y += dsp.c ramstage-y += gpio.c ramstage-y += graphics.c ramstage-y += i2c.c diff --git a/src/soc/intel/apollolake/dsp.c b/src/soc/intel/apollolake/dsp.c new file mode 100644 index 0000000000..a2d21aa259 --- /dev/null +++ b/src/soc/intel/apollolake/dsp.c @@ -0,0 +1,32 @@ +/* + * 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 +#include +#include +#include + +static struct device_operations dsp_dev_ops = { + .read_resources = &pci_dev_read_resources, + .set_resources = &pci_dev_set_resources, + .enable_resources = &pci_dev_enable_resources, + .scan_bus = &scan_static_bus, +}; + +static const struct pci_driver apollolake_dsp __pci_driver = { + .ops = &dsp_dev_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_APOLLOLAKE_AUDIO +};