static int st33zp24_spi_acpi_request_resources(struct spi_device *spi_dev) { struct tpm_chip *chip = spi_get_drvdata(spi_dev); struct st33zp24_dev *tpm_dev = dev_get_drvdata(&chip->dev); struct st33zp24_spi_phy *phy = tpm_dev->phy_id; struct gpio_desc *gpiod_lpcpd; struct device *dev = &spi_dev->dev; int ret; ret = acpi_dev_add_driver_gpios(ACPI_COMPANION(dev), acpi_st33zp24_gpios); if (ret) return ret; /* Get LPCPD GPIO from ACPI */ gpiod_lpcpd = devm_gpiod_get(dev, "lpcpd", GPIOD_OUT_HIGH); if (IS_ERR(gpiod_lpcpd)) { dev_err(dev, "Failed to retrieve lpcpd-gpios from acpi.\n"); phy->io_lpcpd = -1; /* * lpcpd pin is not specified. This is not an issue as * power management can be also managed by TPM specific * commands. So leave with a success status code. */ return 0; } phy->io_lpcpd = desc_to_gpio(gpiod_lpcpd); return 0; }
static int rfkill_gpio_acpi_probe(struct device *dev, struct rfkill_gpio_data *rfkill) { const struct acpi_device_id *id; id = acpi_match_device(dev->driver->acpi_match_table, dev); if (!id) return -ENODEV; rfkill->name = dev_name(dev); rfkill->type = (unsigned)id->driver_data; return acpi_dev_add_driver_gpios(ACPI_COMPANION(dev), acpi_rfkill_default_gpios); }
static int gsl_ts_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct gsl_ts_data *ts; const struct firmware *fw; unsigned long irqflags; int error; dev_warn(&client->dev, "%s: got a device named %s at address 0x%x, IRQ %d, flags 0x%x\n", __func__, client->name, client->addr, client->irq, client->flags); if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { dev_err(&client->dev, "%s: i2c check functionality error\n", __func__); return -ENXIO; } if (client->irq <= 0) { dev_err(&client->dev, "%s: missing IRQ configuration\n", __func__); return -ENODEV; } ts = devm_kzalloc(&client->dev, sizeof(struct gsl_ts_data), GFP_KERNEL); if (!ts) { return -ENOMEM; } ts->client = client; i2c_set_clientdata(client, ts); #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) /* Set up ACPI device descriptor GPIO name mappings. * This is a fallback, it will only be used if the system does not * provide a corresponding _DSD entry. */ error = acpi_dev_add_driver_gpios(ACPI_COMPANION(&client->dev), gsl_ts_acpi_gpios); if (error < 0) { dev_warn(&client->dev, "%s: failed to register GPIO names, continuing anyway\n", __func__); } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) ts->gpio = devm_gpiod_get(&client->dev, GSL_PWR_GPIO); #else ts->gpio = devm_gpiod_get(&client->dev, GSL_PWR_GPIO, GPIOD_OUT_LOW); #endif if (IS_ERR(ts->gpio)) { dev_err(&client->dev, "%s: error obtaining power pin GPIO resource\n", __func__); error = PTR_ERR(ts->gpio); goto release_gpios; } #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) error = gpiod_direction_output(ts->gpio, 0); if (error < 0) { dev_err(&client->dev, "%s: error setting GPIO pin direction\n", __func__); goto release_gpios; } #endif if (ACPI_COMPANION(&client->dev)) { /* Wake the device up with a power on reset */ error = acpi_bus_set_power(ACPI_HANDLE(&client->dev), ACPI_STATE_D3); if (error == 0) { error = acpi_bus_set_power(ACPI_HANDLE(&client->dev), ACPI_STATE_D0); } if (error) { dev_err(&client->dev, "%s: failed to wake up device through ACPI: %d, continuting anyway\n", __func__, error); } } error = request_firmware(&fw, GSL_FW_NAME, &ts->client->dev); if (error < 0) { dev_err(&client->dev, "%s: failed to load firmware: %d\n", __func__, error); goto release_gpios; } error = gsl_ts_init(ts, fw); if (error < 0) { dev_err(&client->dev, "%s: failed to initialize: %d\n", __func__, error); goto release_fw; } ts->input = devm_input_allocate_device(&client->dev); if (!ts->input) { dev_err(&client->dev, "%s: failed to allocate input device\n", __func__); error = -ENOMEM; goto release_fw; } ts->input->name = "Silead GSLx680 Touchscreen"; ts->input->id.bustype = BUS_I2C; ts->input->phys = "input/ts"; input_set_capability(ts->input, EV_ABS, ABS_X); input_set_capability(ts->input, EV_ABS, ABS_Y); input_set_abs_params(ts->input, ABS_MT_POSITION_X, 0, ts->x_max, ts->jitter, ts->deadzone); input_set_abs_params(ts->input, ABS_MT_POSITION_Y, 0, ts->y_max, ts->jitter, ts->deadzone); input_mt_init_slots(ts->input, ts->multi_touches, INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK); input_set_drvdata(ts->input, ts); error = input_register_device(ts->input); if (error) { dev_err(&client->dev, "%s: unable to register input device: %d\n", __func__, error); goto release_fw; } /* * Systems using device tree should set up interrupt via DTS, * the rest will use the default falling edge interrupts. */ irqflags = client->dev.of_node ? 0 : IRQF_TRIGGER_FALLING; /* Set up interrupt handler - do we still need to account for shared interrupts? */ error = devm_request_threaded_irq( &client->dev, client->irq, NULL, gsl_ts_irq, irqflags | IRQF_ONESHOT, client->name, ts ); if (error) { dev_err(&client->dev, "%s: failed to register interrupt\n", __func__); goto release_fw; } /* Execute the controller startup sequence */ error = gsl_ts_reset_chip(client); if (error < 0) { dev_err(&client->dev, "%s: chip reset failed\n", __func__); goto release_fw; } error = gsl_ts_write_fw(ts, fw); if (error < 0) { dev_err(&client->dev, "%s: firmware transfer failed\n", __func__); goto release_fw; } error = gsl_ts_startup_chip(client); if (error < 0) { dev_err(&client->dev, "%s: chip startup failed\n", __func__); goto release_fw; } /* * Systems using device tree should set up wakeup via DTS, * the rest will configure device as wakeup source by default. */ if (!client->dev.of_node) { device_init_wakeup(&client->dev, true); } ts->state = GSL_TS_GREEN; release_fw: if (fw) { release_firmware(fw); } release_gpios: if (error < 0) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) acpi_dev_remove_driver_gpios(ACPI_COMPANION(&client->dev)); #endif return error; } return 0; }
static int dwc3_pci_quirks(struct pci_dev *pdev) { if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { struct dwc3_platform_data pdata; memset(&pdata, 0, sizeof(pdata)); pdata.has_lpm_erratum = true; pdata.lpm_nyet_threshold = 0xf; pdata.u2exit_lfps_quirk = true; pdata.u2ss_inp3_quirk = true; pdata.req_p1p2p3_quirk = true; pdata.del_p1p2p3_quirk = true; pdata.del_phy_power_chg_quirk = true; pdata.lfps_filter_quirk = true; pdata.rx_detect_poll_quirk = true; pdata.tx_de_emphasis_quirk = true; pdata.tx_de_emphasis = 1; /* * FIXME these quirks should be removed when AMD NL * taps out */ pdata.disable_scramble_quirk = true; pdata.dis_u3_susphy_quirk = true; pdata.dis_u2_susphy_quirk = true; return platform_device_add_data(pci_get_drvdata(pdev), &pdata, sizeof(pdata)); } if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == PCI_DEVICE_ID_INTEL_BYT) { struct gpio_desc *gpio; acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev), acpi_dwc3_byt_gpios); /* * These GPIOs will turn on the USB2 PHY. Note that we have to * put the gpio descriptors again here because the phy driver * might want to grab them, too. */ gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); gpiod_set_value_cansleep(gpio, 1); gpiod_put(gpio); gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); if (gpio) { gpiod_set_value_cansleep(gpio, 1); gpiod_put(gpio); usleep_range(10000, 11000); } } if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS && (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 || pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI || pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) { struct dwc3_platform_data pdata; memset(&pdata, 0, sizeof(pdata)); pdata.usb3_lpm_capable = true; pdata.has_lpm_erratum = true; pdata.dis_enblslpm_quirk = true; return platform_device_add_data(pci_get_drvdata(pdev), &pdata, sizeof(pdata)); } return 0; }
static int dwc3_pci_quirks(struct dwc3_pci *dwc) { struct platform_device *dwc3 = dwc->dwc3; struct pci_dev *pdev = dwc->pci; int ret; struct property_entry sysdev_property[] = { PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), { }, }; ret = platform_device_add_properties(dwc3, sysdev_property); if (ret) return ret; if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { struct property_entry properties[] = { PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"), PROPERTY_ENTRY_U8("snps,lpm-nyet-threshold", 0xf), PROPERTY_ENTRY_BOOL("snps,u2exit_lfps_quirk"), PROPERTY_ENTRY_BOOL("snps,u2ss_inp3_quirk"), PROPERTY_ENTRY_BOOL("snps,req_p1p2p3_quirk"), PROPERTY_ENTRY_BOOL("snps,del_p1p2p3_quirk"), PROPERTY_ENTRY_BOOL("snps,del_phy_power_chg_quirk"), PROPERTY_ENTRY_BOOL("snps,lfps_filter_quirk"), PROPERTY_ENTRY_BOOL("snps,rx_detect_poll_quirk"), PROPERTY_ENTRY_BOOL("snps,tx_de_emphasis_quirk"), PROPERTY_ENTRY_U8("snps,tx_de_emphasis", 1), /* * FIXME these quirks should be removed when AMD NL * tapes out */ PROPERTY_ENTRY_BOOL("snps,disable_scramble_quirk"), PROPERTY_ENTRY_BOOL("snps,dis_u3_susphy_quirk"), PROPERTY_ENTRY_BOOL("snps,dis_u2_susphy_quirk"), { }, }; return platform_device_add_properties(dwc3, properties); } if (pdev->vendor == PCI_VENDOR_ID_INTEL) { int ret; struct property_entry properties[] = { PROPERTY_ENTRY_STRING("dr-mode", "peripheral"), { } }; ret = platform_device_add_properties(dwc3, properties); if (ret < 0) return ret; if (pdev->device == PCI_DEVICE_ID_INTEL_BXT || pdev->device == PCI_DEVICE_ID_INTEL_BXT_M) { acpi_str_to_uuid(PCI_INTEL_BXT_DSM_UUID, dwc->uuid); dwc->has_dsm_for_pm = true; } if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) { struct gpio_desc *gpio; acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev), acpi_dwc3_byt_gpios); /* * These GPIOs will turn on the USB2 PHY. Note that we have to * put the gpio descriptors again here because the phy driver * might want to grab them, too. */ gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); gpiod_set_value_cansleep(gpio, 1); gpiod_put(gpio); gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); if (gpio) { gpiod_set_value_cansleep(gpio, 1); gpiod_put(gpio); usleep_range(10000, 11000); } } } if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS && (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 || pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI || pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) { struct property_entry properties[] = { PROPERTY_ENTRY_BOOL("snps,usb3_lpm_capable"), PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"), PROPERTY_ENTRY_BOOL("snps,dis_enblslpm_quirk"), { }, }; return platform_device_add_properties(dwc3, properties); } return 0; }