1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <acpi/acpi_device.h>
4 #include <acpi/acpigen.h>
5 #include <console/console.h>
6 #include <device/i2c_simple.h>
7 #include <device/device.h>
8 #include <stdint.h>
9 #include "chip.h"
10
11 #if CONFIG(HAVE_ACPI_TABLES)
12
13 #define NAU8825_ACPI_NAME "NAU8"
14 #define NAU8825_ACPI_HID "10508825"
15
16 #define NAU8825_DP_INT(key,val) \
17 acpi_dp_add_integer(dp, "nuvoton," key, (val))
18
nau8825_fill_ssdt(const struct device * dev)19 static void nau8825_fill_ssdt(const struct device *dev)
20 {
21 struct drivers_i2c_nau8825_config *config = dev->chip_info;
22 const char *scope = acpi_device_scope(dev);
23 struct acpi_i2c i2c = {
24 .address = dev->path.i2c.device,
25 .mode_10bit = dev->path.i2c.mode_10bit,
26 .speed = config->bus_speed ? : I2C_SPEED_FAST,
27 .resource = scope,
28 };
29 struct acpi_dp *dp = NULL;
30
31 if (!scope)
32 return;
33 if (config->sar_threshold_num > NAU8825_MAX_BUTTONS)
34 return;
35
36 /* Device */
37 acpigen_write_scope(scope);
38 acpigen_write_device(acpi_device_name(dev));
39 acpigen_write_name_string("_HID", NAU8825_ACPI_HID);
40 acpigen_write_name_integer("_UID", 0);
41 acpigen_write_name_string("_DDN", dev->chip_ops->name);
42 acpigen_write_STA(acpi_device_status(dev));
43
44 /* Resources */
45 acpigen_write_name("_CRS");
46 acpigen_write_resourcetemplate_header();
47 acpi_device_write_i2c(&i2c);
48 /* Allow either GpioInt() or Interrupt() */
49 if (config->irq_gpio.pin_count)
50 acpi_device_write_gpio(&config->irq_gpio);
51 else
52 acpi_device_write_interrupt(&config->irq);
53 acpigen_write_resourcetemplate_footer();
54
55 /* Device Properties */
56 dp = acpi_dp_new_table("_DSD");
57 NAU8825_DP_INT("jkdet-enable", config->jkdet_enable);
58 NAU8825_DP_INT("jkdet-pull-enable", config->jkdet_pull_enable);
59 NAU8825_DP_INT("jkdet-pull-up", config->jkdet_pull_up);
60 NAU8825_DP_INT("jkdet-polarity", config->jkdet_polarity);
61 NAU8825_DP_INT("vref-impedance", config->vref_impedance);
62 NAU8825_DP_INT("micbias-voltage", config->micbias_voltage);
63 NAU8825_DP_INT("sar-hysteresis", config->sar_hysteresis);
64 NAU8825_DP_INT("sar-voltage", config->sar_voltage);
65 NAU8825_DP_INT("sar-compare-time", config->sar_compare_time);
66 NAU8825_DP_INT("sar-sampling-time", config->sar_sampling_time);
67 NAU8825_DP_INT("short-key-debounce", config->short_key_debounce);
68 NAU8825_DP_INT("jack-insert-debounce", config->jack_insert_debounce);
69 NAU8825_DP_INT("jack-eject-debounce", config->jack_eject_debounce);
70 NAU8825_DP_INT("sar-threshold-num", config->sar_threshold_num);
71 NAU8825_DP_INT("adcout-drive-strong", config->adcout_ds ? 1 : 0);
72 acpi_dp_add_integer_array(dp, "nuvoton,sar-threshold",
73 config->sar_threshold, config->sar_threshold_num);
74 acpi_dp_write(dp);
75
76 acpigen_pop_len(); /* Device */
77 acpigen_pop_len(); /* Scope */
78
79 printk(BIOS_INFO, "%s: %s address 0%xh irq %d\n",
80 acpi_device_path(dev), dev->chip_ops->name,
81 dev->path.i2c.device, config->irq.pin);
82 }
83
nau8825_acpi_name(const struct device * dev)84 static const char *nau8825_acpi_name(const struct device *dev)
85 {
86 return NAU8825_ACPI_NAME;
87 }
88 #endif
89
90 static struct device_operations nau8825_ops = {
91 .read_resources = noop_read_resources,
92 .set_resources = noop_set_resources,
93 #if CONFIG(HAVE_ACPI_TABLES)
94 .acpi_name = nau8825_acpi_name,
95 .acpi_fill_ssdt = nau8825_fill_ssdt,
96 #endif
97 };
98
nau8825_enable(struct device * dev)99 static void nau8825_enable(struct device *dev)
100 {
101 dev->ops = &nau8825_ops;
102 }
103
104 struct chip_operations drivers_i2c_nau8825_ops = {
105 .name = "Nuvoton NAU8825 Codec",
106 .enable_dev = nau8825_enable
107 };
108