1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // CS35L41 ALSA HDA Property driver
4 //
5 // Copyright 2023 Cirrus Logic, Inc.
6 //
7 // Author: Stefan Binding <sbinding@opensource.cirrus.com>
8
9 #include <linux/gpio/consumer.h>
10 #include <linux/string.h>
11 #include "cs35l41_hda_property.h"
12
13 /*
14 * Device CLSA010(0/1) doesn't have _DSD so a gpiod_get by the label reset won't work.
15 * And devices created by serial-multi-instantiate don't have their device struct
16 * pointing to the correct fwnode, so acpi_dev must be used here.
17 * And devm functions expect that the device requesting the resource has the correct
18 * fwnode.
19 */
lenovo_legion_no_acpi(struct cs35l41_hda * cs35l41,struct device * physdev,int id,const char * hid)20 static int lenovo_legion_no_acpi(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
21 const char *hid)
22 {
23 struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
24
25 /* check I2C address to assign the index */
26 cs35l41->index = id == 0x40 ? 0 : 1;
27 cs35l41->channel_index = 0;
28 cs35l41->reset_gpio = gpiod_get_index(physdev, NULL, 0, GPIOD_OUT_HIGH);
29 cs35l41->speaker_id = cs35l41_get_speaker_id(physdev, 0, 0, 2);
30 hw_cfg->spk_pos = cs35l41->index;
31 hw_cfg->gpio2.func = CS35L41_INTERRUPT;
32 hw_cfg->gpio2.valid = true;
33 hw_cfg->valid = true;
34
35 if (strcmp(hid, "CLSA0100") == 0) {
36 hw_cfg->bst_type = CS35L41_EXT_BOOST_NO_VSPK_SWITCH;
37 } else if (strcmp(hid, "CLSA0101") == 0) {
38 hw_cfg->bst_type = CS35L41_EXT_BOOST;
39 hw_cfg->gpio1.func = CS35l41_VSPK_SWITCH;
40 hw_cfg->gpio1.valid = true;
41 }
42
43 return 0;
44 }
45
46 /*
47 * Device 103C89C6 does have _DSD, however it is setup to use the wrong boost type.
48 * We can override the _DSD to correct the boost type here.
49 * Since this laptop has valid ACPI, we do not need to handle cs-gpios, since that already exists
50 * in the ACPI.
51 */
hp_vision_acpi_fix(struct cs35l41_hda * cs35l41,struct device * physdev,int id,const char * hid)52 static int hp_vision_acpi_fix(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
53 const char *hid)
54 {
55 struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
56
57 dev_info(cs35l41->dev, "Adding DSD properties for %s\n", cs35l41->acpi_subsystem_id);
58
59 cs35l41->index = id;
60 cs35l41->channel_index = 0;
61 cs35l41->reset_gpio = gpiod_get_index(physdev, NULL, 1, GPIOD_OUT_HIGH);
62 cs35l41->speaker_id = -ENOENT;
63 hw_cfg->spk_pos = cs35l41->index ? 1 : 0; // right:left
64 hw_cfg->gpio1.func = CS35L41_NOT_USED;
65 hw_cfg->gpio1.valid = true;
66 hw_cfg->gpio2.func = CS35L41_INTERRUPT;
67 hw_cfg->gpio2.valid = true;
68 hw_cfg->bst_type = CS35L41_INT_BOOST;
69 hw_cfg->bst_ind = 1000;
70 hw_cfg->bst_ipk = 4500;
71 hw_cfg->bst_cap = 24;
72 hw_cfg->valid = true;
73
74 return 0;
75 }
76
77 struct cs35l41_prop_model {
78 const char *hid;
79 const char *ssid;
80 int (*add_prop)(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
81 const char *hid);
82 };
83
84 static const struct cs35l41_prop_model cs35l41_prop_model_table[] = {
85 { "CLSA0100", NULL, lenovo_legion_no_acpi },
86 { "CLSA0101", NULL, lenovo_legion_no_acpi },
87 { "CSC3551", "103C89C6", hp_vision_acpi_fix },
88 {}
89 };
90
cs35l41_add_dsd_properties(struct cs35l41_hda * cs35l41,struct device * physdev,int id,const char * hid)91 int cs35l41_add_dsd_properties(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
92 const char *hid)
93 {
94 const struct cs35l41_prop_model *model;
95
96 for (model = cs35l41_prop_model_table; model->hid; model++) {
97 if (!strcmp(model->hid, hid) &&
98 (!model->ssid ||
99 (cs35l41->acpi_subsystem_id &&
100 !strcmp(model->ssid, cs35l41->acpi_subsystem_id))))
101 return model->add_prop(cs35l41, physdev, id, hid);
102 }
103
104 return -ENOENT;
105 }
106