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authorDuncan Laurie <dlaurie@chromium.org>2017-08-07 17:43:26 -0700
committerDuncan Laurie <dlaurie@chromium.org>2017-08-09 22:05:46 +0000
commit6d5873d7f280b3eb96664e41f2c204fc39ab506a (patch)
treef9241318589701428c8aae3d88cebb9c64e19aae /src/drivers
parent46e293ddff163cea3446ee4413a3c6d071119e60 (diff)
downloadcoreboot-6d5873d7f280b3eb96664e41f2c204fc39ab506a.tar.xz
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>
Diffstat (limited to 'src/drivers')
-rw-r--r--src/drivers/i2c/rt5663/Kconfig4
-rw-r--r--src/drivers/i2c/rt5663/Makefile.inc1
-rw-r--r--src/drivers/i2c/rt5663/chip.h34
-rw-r--r--src/drivers/i2c/rt5663/rt5663.c106
4 files changed, 145 insertions, 0 deletions
diff --git a/src/drivers/i2c/rt5663/Kconfig b/src/drivers/i2c/rt5663/Kconfig
new file mode 100644
index 0000000000..51109729fd
--- /dev/null
+++ b/src/drivers/i2c/rt5663/Kconfig
@@ -0,0 +1,4 @@
+config DRIVERS_I2C_RT5663
+ bool
+ default n
+ depends on HAVE_ACPI_TABLES
diff --git a/src/drivers/i2c/rt5663/Makefile.inc b/src/drivers/i2c/rt5663/Makefile.inc
new file mode 100644
index 0000000000..35c566b976
--- /dev/null
+++ b/src/drivers/i2c/rt5663/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_DRIVERS_I2C_RT5663) += rt5663.c
diff --git a/src/drivers/i2c/rt5663/chip.h b/src/drivers/i2c/rt5663/chip.h
new file mode 100644
index 0000000000..1b367c934f
--- /dev/null
+++ b/src/drivers/i2c/rt5663/chip.h
@@ -0,0 +1,34 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 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.
+ */
+
+/*
+ * Realtek RT5663 audio codec devicetree bindings
+ */
+struct drivers_i2c_rt5663_config {
+ /* I2C Bus Frequency in Hertz (default 400kHz) */
+ unsigned int bus_speed;
+ /* Identifier for multiple chips */
+ unsigned int uid;
+
+ /* Allow GPIO based interrupt or PIRQ */
+ struct acpi_gpio irq_gpio;
+ struct acpi_irq irq;
+
+ /* Manual offset value to compensate DC offset for L/R channels */
+ uint32_t dc_offset_l_manual;
+ uint32_t dc_offset_r_manual;
+ uint32_t dc_offset_l_manual_mic;
+ uint32_t dc_offset_r_manual_mic;
+};
diff --git a/src/drivers/i2c/rt5663/rt5663.c b/src/drivers/i2c/rt5663/rt5663.c
new file mode 100644
index 0000000000..e8734dc8c2
--- /dev/null
+++ b/src/drivers/i2c/rt5663/rt5663.c
@@ -0,0 +1,106 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 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"
+
+#define RT5663_ACPI_NAME "RT53"
+#define RT5663_ACPI_HID "10EC5663"
+
+#define RT5663_DP_INT(key, val) \
+ acpi_dp_add_integer(dp, "realtek," key, (val))
+
+static void rt5663_fill_ssdt(struct device *dev)
+{
+ struct drivers_i2c_rt5663_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;
+
+ if (!dev->enabled || !scope)
+ return;
+
+ /* Device */
+ acpigen_write_scope(scope);
+ acpigen_write_device(acpi_device_name(dev));
+ acpigen_write_name_string("_HID", RT5663_ACPI_HID);
+ acpigen_write_name_integer("_UID", config->uid);
+ 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);
+ /* Allow either GpioInt() or Interrupt() */
+ if (config->irq_gpio.pin_count)
+ acpi_device_write_gpio(&config->irq_gpio);
+ else
+ acpi_device_write_interrupt(&config->irq);
+ acpigen_write_resourcetemplate_footer();
+
+ /* Device Properties */
+ dp = acpi_dp_new_table("_DSD");
+ if (config->irq_gpio.pin_count)
+ acpi_dp_add_gpio(dp, "irq-gpios", acpi_device_path(dev), 0, 0,
+ config->irq_gpio.polarity == ACPI_GPIO_ACTIVE_LOW);
+ RT5663_DP_INT("dc_offset_l_manual", config->dc_offset_l_manual);
+ RT5663_DP_INT("dc_offset_r_manual", config->dc_offset_r_manual);
+ RT5663_DP_INT("dc_offset_l_manual_mic", config->dc_offset_l_manual_mic);
+ RT5663_DP_INT("dc_offset_r_manual_mic", config->dc_offset_r_manual_mic);
+ acpi_dp_write(dp);
+
+ acpigen_pop_len(); /* Device */
+ acpigen_pop_len(); /* Scope */
+
+ printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev),
+ dev->chip_ops->name, dev->path.i2c.device);
+}
+
+static const char *rt5663_acpi_name(struct device *dev)
+{
+ return RT5663_ACPI_NAME;
+}
+
+static struct device_operations rt5663_ops = {
+ .read_resources = DEVICE_NOOP,
+ .set_resources = DEVICE_NOOP,
+ .enable_resources = DEVICE_NOOP,
+ .acpi_name = &rt5663_acpi_name,
+ .acpi_fill_ssdt_generator = &rt5663_fill_ssdt,
+};
+
+static void rt5663_enable(struct device *dev)
+{
+ dev->ops = &rt5663_ops;
+}
+
+struct chip_operations drivers_i2c_rt5663_ops = {
+ CHIP_NAME("Realtek RT5663 Codec")
+ .enable_dev = &rt5663_enable
+};