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 */ 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 */ 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 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