drivers/i2c: Add driver for rt5663 codec
This commit adds a new driver for the RT5663 codec to use instead of the generic i2c driver. Since the kernel needs additional driver-specific device properties we need a BIOS driver that can provide those properties. The kernel driver devicetree properties for this codec are at: linux/Documentation/devicetree/bindings/sound/rt5663.txt This was tested by booting and verifying the generated SSDT contains the expected device properties in _DSD. Scope (\_SB.PCI0.I2C4) { Device (RT53) { Name (_HID, "10EC5663") Name (_UID, Zero) Name (_DDN, "Realtek RT5663 Codec") Method (_STA, 0, NotSerialized) { Return (0x0F) } Name (_CRS, ResourceTemplate () { I2cSerialBus (0x0013, ControllerInitiated, 0x00061A80, AddressingMode7Bit, "\\_SB.PCI0.I2C4", 0x00, ResourceConsumer) GpioInt (Edge, ActiveBoth, Exclusive, PullDefault, 0x0000, "\\_SB.PCI0.GPIO", 0x00, ResourceConsumer) { 0x0051 } }) Name (_DSD, Package (0x02) { ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") Package (0x05) { Package (0x02) { "irq-gpios", Package (0x04) { \_SB.PCI0.I2C4.RT53, Zero, Zero, Zero } }, Package (0x02) { "realtek,dc_offset_l_manual", 0x00FFD160 }, Package (0x02) { "realtek,dc_offset_r_manual", 0x00FFD1C0 }, Package (0x02) { "realtek,dc_offset_l_manual_mic", 0x00FF8A10 }, Package (0x02) { "realtek,dc_offset_r_manual_mic", 0x00FF8AB0 } } }) } } Change-Id: I3425fcbe13c9a5987fc91086d283a86db55c0819 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/20904 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
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config DRIVERS_I2C_RT5663
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bool
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default n
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depends on HAVE_ACPI_TABLES
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ramstage-$(CONFIG_DRIVERS_I2C_RT5663) += rt5663.c
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2017 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/*
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* Realtek RT5663 audio codec devicetree bindings
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*/
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struct drivers_i2c_rt5663_config {
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/* I2C Bus Frequency in Hertz (default 400kHz) */
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unsigned int bus_speed;
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/* Identifier for multiple chips */
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unsigned int uid;
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/* Allow GPIO based interrupt or PIRQ */
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struct acpi_gpio irq_gpio;
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struct acpi_irq irq;
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/* Manual offset value to compensate DC offset for L/R channels */
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uint32_t dc_offset_l_manual;
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uint32_t dc_offset_r_manual;
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uint32_t dc_offset_l_manual_mic;
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uint32_t dc_offset_r_manual_mic;
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};
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2017 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/acpi.h>
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#include <arch/acpi_device.h>
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#include <arch/acpigen.h>
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#include <console/console.h>
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#include <device/i2c.h>
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#include <device/device.h>
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#include <device/path.h>
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#include <stdint.h>
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#include <string.h>
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#include "chip.h"
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#define RT5663_ACPI_NAME "RT53"
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#define RT5663_ACPI_HID "10EC5663"
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#define RT5663_DP_INT(key, val) \
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acpi_dp_add_integer(dp, "realtek," key, (val))
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static void rt5663_fill_ssdt(struct device *dev)
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{
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struct drivers_i2c_rt5663_config *config = dev->chip_info;
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const char *scope = acpi_device_scope(dev);
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struct acpi_i2c i2c = {
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.address = dev->path.i2c.device,
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.mode_10bit = dev->path.i2c.mode_10bit,
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.speed = config->bus_speed ? : I2C_SPEED_FAST,
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.resource = scope,
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};
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struct acpi_dp *dp;
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if (!dev->enabled || !scope)
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return;
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/* Device */
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acpigen_write_scope(scope);
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acpigen_write_device(acpi_device_name(dev));
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acpigen_write_name_string("_HID", RT5663_ACPI_HID);
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acpigen_write_name_integer("_UID", config->uid);
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acpigen_write_name_string("_DDN", dev->chip_ops->name);
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acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON);
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/* Resources */
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acpigen_write_name("_CRS");
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acpigen_write_resourcetemplate_header();
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acpi_device_write_i2c(&i2c);
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/* Allow either GpioInt() or Interrupt() */
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if (config->irq_gpio.pin_count)
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acpi_device_write_gpio(&config->irq_gpio);
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else
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acpi_device_write_interrupt(&config->irq);
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acpigen_write_resourcetemplate_footer();
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/* Device Properties */
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dp = acpi_dp_new_table("_DSD");
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if (config->irq_gpio.pin_count)
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acpi_dp_add_gpio(dp, "irq-gpios", acpi_device_path(dev), 0, 0,
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config->irq_gpio.polarity == ACPI_GPIO_ACTIVE_LOW);
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RT5663_DP_INT("dc_offset_l_manual", config->dc_offset_l_manual);
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RT5663_DP_INT("dc_offset_r_manual", config->dc_offset_r_manual);
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RT5663_DP_INT("dc_offset_l_manual_mic", config->dc_offset_l_manual_mic);
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RT5663_DP_INT("dc_offset_r_manual_mic", config->dc_offset_r_manual_mic);
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acpi_dp_write(dp);
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acpigen_pop_len(); /* Device */
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acpigen_pop_len(); /* Scope */
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printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev),
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dev->chip_ops->name, dev->path.i2c.device);
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}
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static const char *rt5663_acpi_name(struct device *dev)
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{
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return RT5663_ACPI_NAME;
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}
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static struct device_operations rt5663_ops = {
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.read_resources = DEVICE_NOOP,
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.set_resources = DEVICE_NOOP,
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.enable_resources = DEVICE_NOOP,
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.acpi_name = &rt5663_acpi_name,
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.acpi_fill_ssdt_generator = &rt5663_fill_ssdt,
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};
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static void rt5663_enable(struct device *dev)
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{
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dev->ops = &rt5663_ops;
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}
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struct chip_operations drivers_i2c_rt5663_ops = {
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CHIP_NAME("Realtek RT5663 Codec")
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.enable_dev = &rt5663_enable
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};
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