[coreboot-gerrit] New patch to review for coreboot: drivers/i2c/rt5663: SSDT generator for Realtek 5663 codec
Rizwan Qureshi (rizwan.qureshi@intel.com)
gerrit at coreboot.org
Tue Jan 24 09:00:43 CET 2017
Rizwan Qureshi (rizwan.qureshi at intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/18212
-gerrit
commit f1763074d7c596143bc5008c9ad7b6dc2b2b22ee
Author: Rizwan Qureshi <rizwan.qureshi at intel.com>
Date: Sat Jan 14 16:25:00 2017 +0530
drivers/i2c/rt5663: SSDT generator for Realtek 5663 codec
Add a SSDT generator for Realtek 5663 audio codec.
Change-Id: Ic5c37b30cd2595579a0e914b67e1d6a646f0b130
Signed-off-by: Rizwan Qureshi <rizwan.qureshi at intel.com>
Signed-off-by: M Naveen <naveen.m at intel.com>
---
src/drivers/i2c/rt5663/Kconfig | 2 +
src/drivers/i2c/rt5663/Makefile.inc | 1 +
src/drivers/i2c/rt5663/chip.h | 96 +++++++++++++++++++++++++++++++++
src/drivers/i2c/rt5663/rt5663.c | 104 ++++++++++++++++++++++++++++++++++++
4 files changed, 203 insertions(+)
diff --git a/src/drivers/i2c/rt5663/Kconfig b/src/drivers/i2c/rt5663/Kconfig
new file mode 100644
index 0000000..03b25d1
--- /dev/null
+++ b/src/drivers/i2c/rt5663/Kconfig
@@ -0,0 +1,2 @@
+config DRIVERS_I2C_RT5663
+ bool
diff --git a/src/drivers/i2c/rt5663/Makefile.inc b/src/drivers/i2c/rt5663/Makefile.inc
new file mode 100644
index 0000000..35c566b
--- /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 0000000..f2c1cd4
--- /dev/null
+++ b/src/drivers/i2c/rt5663/chip.h
@@ -0,0 +1,96 @@
+#include <arch/acpi_device.h>
+
+#define RT5663_MAX_BUTTONS 8
+
+/*
+ * Realtek RT5663 audio codec devicetree bindings
+ * linux/Documentation/devicetree/bindings/sound/rt5663.txt
+ */
+struct drivers_i2c_rt5663_config {
+ /* Interrupt configuration */
+ struct acpi_irq irq;
+
+ /* I2C Bus Frequency in Hertz (default 400kHz) */
+ unsigned bus_speed;
+
+ /* Enable jack detection via JKDET pin */
+ unsigned jkdet_enable;
+
+ /* Enable JKDET pin pull if set, otherwise high impedance state */
+ unsigned jkdet_pull_enable;
+
+ /* Pull-up JKDET pin if set, otherwise pull down */
+ unsigned jkdet_pull_up;
+
+ /* JKDET pin polarity, 0 => active high, 1 => active low */
+ unsigned jkdet_polarity;
+
+ /*
+ * VREF Impedance selection
+ * 0 - Open
+ * 1 - 25 kOhm
+ * 2 - 125 kOhm
+ * 3 - 2.5 kOhm
+ */
+ unsigned vref_impedance;
+
+ /* Button impedance measurement hysteresis */
+ unsigned sar_hysteresis;
+
+ /*
+ * Reference voltage for button impedance measurement and micbias
+ * 0 - VDDA
+ * 1 - VDDA
+ * 2 - VDDA * 1.1
+ * 3 - VDDA * 1.2
+ * 4 - VDDA * 1.3
+ * 5 - VDDA * 1.4
+ * 6 - VDDA * 1.53
+ * 7 - VDDA * 1.53
+ */
+ unsigned micbias_voltage;
+ unsigned sar_voltage;
+
+ /*
+ * SAR compare time
+ * 0 - 500 ns
+ * 1 - 1 us
+ * 2 - 2 us
+ * 3 - 4 us
+ */
+ unsigned sar_compare_time;
+
+ /*
+ * SAR sampling time
+ * 0 - 2 us
+ * 1 - 4 us
+ * 2 - 8 us
+ * 3 - 16 us
+ */
+ unsigned sar_sampling_time;
+
+ /*
+ * Button short key press debounce time
+ * 0 - 30 ms
+ * 1 - 50 ms
+ * 2 - 100 ms
+ * 3 - 30 ms
+ */
+ unsigned short_key_debounce;
+
+ /* Debounce time 2^(n+2) ms (0-7) for jack insert */
+ unsigned jack_insert_debounce;
+
+ /* Debounce time 2^(n+2) ms (0-7) for jack eject */
+ unsigned jack_eject_debounce;
+
+ /* Number of buttons supported, up to 8 */
+ unsigned sar_threshold_num;
+
+ /*
+ * Impedance threshold for each button, up to 8
+ * SAR = 255 * micbias_voltage / sar_voltage * R / (2000 + R)
+ * R is Button impedance
+ */
+ uint64_t sar_threshold[RT5663_MAX_BUTTONS];
+};
diff --git a/src/drivers/i2c/rt5663/rt5663.c b/src/drivers/i2c/rt5663/rt5663.c
new file mode 100644
index 0000000..842d572
--- /dev/null
+++ b/src/drivers/i2c/rt5663/rt5663.c
@@ -0,0 +1,104 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 Intel 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 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 = NULL;
+
+ 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", 1);
+ acpigen_write_name_string("_DDN", dev->chip_ops->name);
+ acpigen_write_name_integer("_S0W", 4);
+ acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON);
+
+ /* Resources */
+ acpigen_write_name("_CRS");
+ acpigen_write_resourcetemplate_header();
+ acpi_device_write_i2c(&i2c);
+ acpi_device_write_interrupt(&config->irq);
+ acpigen_write_resourcetemplate_footer();
+
+ /* Device Properties */
+ dp = acpi_dp_new_table("_DSD");
+
+ acpi_dp_write(dp);
+
+ acpigen_pop_len(); /* Device */
+ acpigen_pop_len(); /* Scope */
+
+ printk(BIOS_INFO, "%s: %s address 0%xh irq %d\n",
+ acpi_device_path(dev), dev->chip_ops->name,
+ dev->path.i2c.device, config->irq.pin);
+}
+
+static const char *rt5663_acpi_name(struct device *dev)
+{
+ return RT5663_ACPI_NAME;
+}
+#endif
+
+static struct device_operations rt5663_ops = {
+ .read_resources = DEVICE_NOOP,
+ .set_resources = DEVICE_NOOP,
+ .enable_resources = DEVICE_NOOP,
+#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
+ .acpi_name = &rt5663_acpi_name,
+ .acpi_fill_ssdt_generator = &rt5663_fill_ssdt,
+#endif
+};
+
+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
+};
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