1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <acpi/acpi.h>
4 #include <acpi/acpi_device.h>
5 #include <acpi/acpigen.h>
6 #include <console/console.h>
7 #include <device/i2c_simple.h>
8 #include <device/device.h>
9 #include <stdio.h>
10
11 #include "chip.h"
12
13 #define CS35L53_ACPI_HID "CSC3541"
14
cs35l53_fill_ssdt(const struct device * dev)15 static void cs35l53_fill_ssdt(const struct device *dev)
16 {
17 struct drivers_i2c_cs35l53_config *config = dev->chip_info;
18 const char *scope = acpi_device_scope(dev);
19 const char *path = acpi_device_path(dev);
20 struct acpi_i2c i2c = {
21 .address = dev->path.i2c.device,
22 .mode_10bit = dev->path.i2c.mode_10bit,
23 .speed = config->bus_speed ? : I2C_SPEED_FAST,
24 .resource = scope,
25 };
26 struct acpi_dp *dsd;
27 int gpio_index = 0;
28
29 if (!scope)
30 return;
31
32 /* Device */
33 acpigen_write_scope(scope);
34 acpigen_write_device(acpi_device_name(dev));
35 acpigen_write_name_string("_HID", CS35L53_ACPI_HID);
36 acpigen_write_name_integer("_UID", config->uid);
37 if (config->desc == NULL)
38 acpigen_write_name_string("_DDN", dev->chip_ops->name);
39 else
40 acpigen_write_name_string("_DDN", config->desc);
41 acpigen_write_name_string("_SUB", config->sub);
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 /* Use either Interrupt() or GpioInt() */
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
54 /* for cs35l53 reset gpio */
55 if (config->reset_gpio.pin_count)
56 acpi_device_write_gpio(&config->reset_gpio);
57
58 acpigen_write_resourcetemplate_footer();
59
60 /* Add Child Device Properties */
61 dsd = acpi_dp_new_table("_DSD");
62 if (config->irq_gpio.pin_count)
63 acpi_dp_add_gpio(dsd, "irq-gpios", path,
64 gpio_index++, /* Index = 0 */
65 0, /* Pin = 0 (There is a single pin in the GPIO resource). */
66 config->irq_gpio.active_low);
67 if (config->reset_gpio.pin_count)
68 acpi_dp_add_gpio(dsd, "reset-gpios", path,
69 gpio_index++, /* Index = 0 or 1 (if irq gpio is written). */
70 0, /* Pin = 0 (There is a single pin in the GPIO resource). */
71 config->reset_gpio.active_low);
72
73 acpi_dp_add_integer(dsd, "cirrus,boost-type", config->boost_type);
74
75 switch (config->boost_type) {
76 case INTERNAL_BOOST:
77 if ((config->boost_peak_milliamp > 4500) ||
78 (config->boost_peak_milliamp < 1600) ||
79 (config->boost_peak_milliamp % 50)) {
80 printk(BIOS_ERR,
81 "%s: Incorrect boost_peak_milliamp(%d). Using default of 4500 mA\n",
82 __func__, config->boost_peak_milliamp);
83 config->boost_peak_milliamp = 4500;
84 }
85 acpi_dp_add_integer(dsd, "cirrus,boost-peak-milliamp",
86 config->boost_peak_milliamp);
87 acpi_dp_add_integer(dsd, "cirrus,boost-ind-nanohenry",
88 config->boost_ind_nanohenry);
89 acpi_dp_add_integer(dsd, "cirrus,boost-cap-microfarad",
90 config->boost_cap_microfarad);
91 break;
92 case EXTERNAL_BOOST:
93 config->gpio1_output_enable = true;
94 config->gpio1_src_select = GPIO1_SRC_GPIO;
95 break;
96 default:
97 break;
98 }
99
100 acpi_dp_add_integer(dsd, "cirrus,asp-sdout-hiz", config->asp_sdout_hiz);
101 acpi_dp_add_integer(dsd, "cirrus,gpio1-polarity-invert",
102 config->gpio1_polarity_invert);
103 acpi_dp_add_integer(dsd, "cirrus,gpio1-output-enable",
104 config->gpio1_output_enable);
105 acpi_dp_add_integer(dsd, "cirrus,gpio1-src-select", config->gpio1_src_select);
106 acpi_dp_add_integer(dsd, "cirrus,gpio2-polarity-invert",
107 config->gpio2_polarity_invert);
108 acpi_dp_add_integer(dsd, "cirrus,gpio2-output-enable",
109 config->gpio2_output_enable);
110 acpi_dp_add_integer(dsd, "cirrus,gpio2-src-select", config->gpio2_src_select);
111
112 /* Write Device Property Hierarchy */
113 acpi_dp_write(dsd);
114
115 acpigen_pop_len(); /* Device */
116 acpigen_pop_len(); /* Scope */
117
118 printk(BIOS_INFO, "%s: %s address 0%xh irq %d\n",
119 acpi_device_path(dev), dev->chip_ops->name,
120 dev->path.i2c.device, config->irq.pin);
121 }
122
cs35l53_acpi_name(const struct device * dev)123 static const char *cs35l53_acpi_name(const struct device *dev)
124 {
125 struct drivers_i2c_cs35l53_config *config = dev->chip_info;
126 static char name[ACPI_NAME_BUFFER_SIZE];
127
128 if (config->name)
129 return config->name;
130
131 snprintf(name, sizeof(name), "D%03.3X", dev->path.i2c.device);
132 return name;
133 }
134
135 static struct device_operations cs35l53_ops = {
136 .read_resources = noop_read_resources,
137 .set_resources = noop_set_resources,
138 .acpi_name = cs35l53_acpi_name,
139 .acpi_fill_ssdt = cs35l53_fill_ssdt,
140 };
141
cs35l53_enable(struct device * dev)142 static void cs35l53_enable(struct device *dev)
143 {
144 dev->ops = &cs35l53_ops;
145 }
146
147 struct chip_operations drivers_i2c_cs35l53_ops = {
148 .name = "Cirrus Logic CS35L53 Audio Codec",
149 .enable_dev = cs35l53_enable
150 };
151