New patch to review for coreboot: drivers/i2c/rt5663: SSDT generator for Realtek 5663 codec
Rizwan Qureshi (rizwan.qureshi@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@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@intel.com Signed-off-by: M Naveen naveen.m@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 +};
-
Rizwan Qureshi