static int st_nci_i2c_acpi_request_resources(struct i2c_client *client)
{
struct st_nci_i2c_phy *phy = i2c_get_clientdata(client);
struct gpio_desc *gpiod_reset;
struct device *dev = &client->dev;
u8 tmp;
/* Get RESET GPIO from ACPI */
gpiod_reset = devm_gpiod_get_index(dev, ST_NCI_GPIO_NAME_RESET, 1,
GPIOD_OUT_HIGH);
if (IS_ERR(gpiod_reset)) {
nfc_err(dev, "Unable to get RESET GPIO\n");
return -ENODEV;
}
phy->gpio_reset = desc_to_gpio(gpiod_reset);
phy->irq_polarity = irq_get_trigger_type(client->irq);
phy->se_status.is_ese_present = false;
phy->se_status.is_uicc_present = false;
if (device_property_present(dev, "ese-present")) {
device_property_read_u8(dev, "ese-present", &tmp);
phy->se_status.is_ese_present = tmp;
}
if (device_property_present(dev, "uicc-present")) {
device_property_read_u8(dev, "uicc-present", &tmp);
phy->se_status.is_uicc_present = tmp;
}
return 0;
}
static int tusb1210_probe(struct ulpi *ulpi)
{
struct tusb1210 *tusb;
u8 val, reg;
tusb = devm_kzalloc(&ulpi->dev, sizeof(*tusb), GFP_KERNEL);
if (!tusb)
return -ENOMEM;
tusb->gpio_reset = devm_gpiod_get_optional(&ulpi->dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(tusb->gpio_reset))
return PTR_ERR(tusb->gpio_reset);
gpiod_set_value_cansleep(tusb->gpio_reset, 1);
tusb->gpio_cs = devm_gpiod_get_optional(&ulpi->dev, "cs",
GPIOD_OUT_LOW);
if (IS_ERR(tusb->gpio_cs))
return PTR_ERR(tusb->gpio_cs);
gpiod_set_value_cansleep(tusb->gpio_cs, 1);
/*
* VENDOR_SPECIFIC2 register in TUSB1210 can be used for configuring eye
* diagram optimization and DP/DM swap.
*/
/* High speed output drive strength configuration */
device_property_read_u8(&ulpi->dev, "ihstx", &val);
reg = val << TUSB1210_VENDOR_SPECIFIC2_IHSTX_SHIFT;
/* High speed output impedance configuration */
device_property_read_u8(&ulpi->dev, "zhsdrv", &val);
reg |= val << TUSB1210_VENDOR_SPECIFIC2_ZHSDRV_SHIFT;
/* DP/DM swap control */
device_property_read_u8(&ulpi->dev, "datapolarity", &val);
reg |= val << TUSB1210_VENDOR_SPECIFIC2_DP_SHIFT;
if (reg) {
ulpi_write(ulpi, TUSB1210_VENDOR_SPECIFIC2, reg);
tusb->vendor_specific2 = reg;
}
tusb->phy = ulpi_phy_create(ulpi, &phy_ops);
if (IS_ERR(tusb->phy))
return PTR_ERR(tusb->phy);
tusb->ulpi = ulpi;
phy_set_drvdata(tusb->phy, tusb);
ulpi_set_drvdata(ulpi, tusb);
return 0;
}
static void fdp_nci_i2c_read_device_properties(struct device *dev,
u8 *clock_type, u32 *clock_freq,
u8 **fw_vsc_cfg)
{
int r;
u8 len;
r = device_property_read_u8(dev, FDP_DP_CLOCK_TYPE_NAME, clock_type);
if (r) {
dev_dbg(dev, "Using default clock type");
*clock_type = 0;
}
r = device_property_read_u32(dev, FDP_DP_CLOCK_FREQ_NAME, clock_freq);
if (r) {
dev_dbg(dev, "Using default clock frequency\n");
*clock_freq = 26000;
}
if (device_property_present(dev, FDP_DP_FW_VSC_CFG_NAME)) {
r = device_property_read_u8(dev, FDP_DP_FW_VSC_CFG_NAME,
&len);
if (r || len <= 0)
goto vsc_read_err;
/* Add 1 to the length to inclue the length byte itself */
len++;
*fw_vsc_cfg = devm_kmalloc(dev,
len * sizeof(**fw_vsc_cfg),
GFP_KERNEL);
r = device_property_read_u8_array(dev, FDP_DP_FW_VSC_CFG_NAME,
*fw_vsc_cfg, len);
if (r) {
devm_kfree(dev, fw_vsc_cfg);
goto vsc_read_err;
}
} else {
vsc_read_err:
dev_dbg(dev, "FW vendor specific commands not present\n");
*fw_vsc_cfg = NULL;
}
dev_dbg(dev, "Clock type: %d, clock frequency: %d, VSC: %s",
*clock_type, *clock_freq, *fw_vsc_cfg != NULL ? "yes" : "no");
}
static void us5182d_get_platform_data(struct iio_dev *indio_dev)
{
struct us5182d_data *data = iio_priv(indio_dev);
if (device_property_read_u32(&data->client->dev, "upisemi,glass-coef",
&data->ga))
data->ga = US5182D_GA_RESOLUTION;
if (device_property_read_u16_array(&data->client->dev,
"upisemi,dark-ths",
data->us5182d_dark_ths,
ARRAY_SIZE(us5182d_dark_ths_vals)))
data->us5182d_dark_ths = us5182d_dark_ths_vals;
if (device_property_read_u8(&data->client->dev,
"upisemi,upper-dark-gain",
&data->upper_dark_gain))
data->upper_dark_gain = US5182D_REG_AUTO_HDARK_GAIN_DEFAULT;
if (device_property_read_u8(&data->client->dev,
"upisemi,lower-dark-gain",
&data->lower_dark_gain))
data->lower_dark_gain = US5182D_REG_AUTO_LDARK_GAIN_DEFAULT;
data->default_continuous = device_property_read_bool(&data->client->dev,
"upisemi,continuous");
}
static void dwc2_get_device_property(struct dwc2_hsotg *hsotg,
char *property, u8 size, u64 *value)
{
u8 val8;
u16 val16;
u32 val32;
switch (size) {
case 0:
*value = device_property_read_bool(hsotg->dev, property);
break;
case 1:
if (device_property_read_u8(hsotg->dev, property, &val8))
return;
*value = val8;
break;
case 2:
if (device_property_read_u16(hsotg->dev, property, &val16))
return;
*value = val16;
break;
case 4:
if (device_property_read_u32(hsotg->dev, property, &val32))
return;
*value = val32;
break;
case 8:
if (device_property_read_u64(hsotg->dev, property, value))
return;
break;
default:
/*
* The size is checked by the only function that calls
* this so this should never happen.
*/
WARN_ON(1);
return;
}
}
static void dwc3_get_properties(struct dwc3 *dwc)
{
struct device *dev = dwc->dev;
u8 lpm_nyet_threshold;
u8 tx_de_emphasis;
u8 hird_threshold;
/* default to highest possible threshold */
lpm_nyet_threshold = 0xff;
/* default to -3.5dB de-emphasis */
tx_de_emphasis = 1;
/*
* default to assert utmi_sleep_n and use maximum allowed HIRD
* threshold value of 0b1100
*/
hird_threshold = 12;
dwc->maximum_speed = usb_get_maximum_speed(dev);
dwc->dr_mode = usb_get_dr_mode(dev);
dwc->hsphy_mode = of_usb_get_phy_mode(dev->of_node);
dwc->sysdev_is_parent = device_property_read_bool(dev,
"linux,sysdev_is_parent");
if (dwc->sysdev_is_parent)
dwc->sysdev = dwc->dev->parent;
else
dwc->sysdev = dwc->dev;
dwc->has_lpm_erratum = device_property_read_bool(dev,
"snps,has-lpm-erratum");
device_property_read_u8(dev, "snps,lpm-nyet-threshold",
&lpm_nyet_threshold);
dwc->is_utmi_l1_suspend = device_property_read_bool(dev,
"snps,is-utmi-l1-suspend");
device_property_read_u8(dev, "snps,hird-threshold",
&hird_threshold);
dwc->usb3_lpm_capable = device_property_read_bool(dev,
"snps,usb3_lpm_capable");
dwc->disable_scramble_quirk = device_property_read_bool(dev,
"snps,disable_scramble_quirk");
dwc->u2exit_lfps_quirk = device_property_read_bool(dev,
"snps,u2exit_lfps_quirk");
dwc->u2ss_inp3_quirk = device_property_read_bool(dev,
"snps,u2ss_inp3_quirk");
dwc->req_p1p2p3_quirk = device_property_read_bool(dev,
"snps,req_p1p2p3_quirk");
dwc->del_p1p2p3_quirk = device_property_read_bool(dev,
"snps,del_p1p2p3_quirk");
dwc->del_phy_power_chg_quirk = device_property_read_bool(dev,
"snps,del_phy_power_chg_quirk");
dwc->lfps_filter_quirk = device_property_read_bool(dev,
"snps,lfps_filter_quirk");
dwc->rx_detect_poll_quirk = device_property_read_bool(dev,
"snps,rx_detect_poll_quirk");
dwc->dis_u3_susphy_quirk = device_property_read_bool(dev,
"snps,dis_u3_susphy_quirk");
dwc->dis_u2_susphy_quirk = device_property_read_bool(dev,
"snps,dis_u2_susphy_quirk");
dwc->dis_enblslpm_quirk = device_property_read_bool(dev,
"snps,dis_enblslpm_quirk");
dwc->dis_rxdet_inp3_quirk = device_property_read_bool(dev,
"snps,dis_rxdet_inp3_quirk");
dwc->dis_u2_freeclk_exists_quirk = device_property_read_bool(dev,
"snps,dis-u2-freeclk-exists-quirk");
dwc->dis_del_phy_power_chg_quirk = device_property_read_bool(dev,
"snps,dis-del-phy-power-chg-quirk");
dwc->tx_de_emphasis_quirk = device_property_read_bool(dev,
"snps,tx_de_emphasis_quirk");
device_property_read_u8(dev, "snps,tx_de_emphasis",
&tx_de_emphasis);
device_property_read_string(dev, "snps,hsphy_interface",
&dwc->hsphy_interface);
device_property_read_u32(dev, "snps,quirk-frame-length-adjustment",
&dwc->fladj);
dwc->lpm_nyet_threshold = lpm_nyet_threshold;
dwc->tx_de_emphasis = tx_de_emphasis;
dwc->hird_threshold = hird_threshold
| (dwc->is_utmi_l1_suspend << 4);
dwc->imod_interval = 0;
}
static int dwc3_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct dwc3_platform_data *pdata = dev_get_platdata(dev);
struct resource *res;
struct dwc3 *dwc;
u8 lpm_nyet_threshold;
u8 tx_de_emphasis;
u8 hird_threshold;
u32 fladj = 0;
int ret;
void __iomem *regs;
void *mem;
mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
if (!mem)
return -ENOMEM;
dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);
dwc->mem = mem;
dwc->dev = dev;
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
dev_err(dev, "missing IRQ\n");
return -ENODEV;
}
dwc->xhci_resources[1].start = res->start;
dwc->xhci_resources[1].end = res->end;
dwc->xhci_resources[1].flags = res->flags;
dwc->xhci_resources[1].name = res->name;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "missing memory resource\n");
return -ENODEV;
}
dwc->xhci_resources[0].start = res->start;
dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
DWC3_XHCI_REGS_END;
dwc->xhci_resources[0].flags = res->flags;
dwc->xhci_resources[0].name = res->name;
res->start += DWC3_GLOBALS_REGS_START;
/*
* Request memory region but exclude xHCI regs,
* since it will be requested by the xhci-plat driver.
*/
regs = devm_ioremap_resource(dev, res);
if (IS_ERR(regs)) {
ret = PTR_ERR(regs);
goto err0;
}
dwc->regs = regs;
dwc->regs_size = resource_size(res);
/* default to highest possible threshold */
lpm_nyet_threshold = 0xff;
/* default to -3.5dB de-emphasis */
tx_de_emphasis = 1;
/*
* default to assert utmi_sleep_n and use maximum allowed HIRD
* threshold value of 0b1100
*/
hird_threshold = 12;
dwc->maximum_speed = usb_get_maximum_speed(dev);
dwc->dr_mode = usb_get_dr_mode(dev);
dwc->has_lpm_erratum = device_property_read_bool(dev,
"snps,has-lpm-erratum");
device_property_read_u8(dev, "snps,lpm-nyet-threshold",
&lpm_nyet_threshold);
dwc->is_utmi_l1_suspend = device_property_read_bool(dev,
"snps,is-utmi-l1-suspend");
device_property_read_u8(dev, "snps,hird-threshold",
&hird_threshold);
dwc->usb3_lpm_capable = device_property_read_bool(dev,
"snps,usb3_lpm_capable");
dwc->needs_fifo_resize = device_property_read_bool(dev,
"tx-fifo-resize");
dwc->disable_scramble_quirk = device_property_read_bool(dev,
"snps,disable_scramble_quirk");
dwc->u2exit_lfps_quirk = device_property_read_bool(dev,
"snps,u2exit_lfps_quirk");
dwc->u2ss_inp3_quirk = device_property_read_bool(dev,
"snps,u2ss_inp3_quirk");
dwc->req_p1p2p3_quirk = device_property_read_bool(dev,
"snps,req_p1p2p3_quirk");
dwc->del_p1p2p3_quirk = device_property_read_bool(dev,
"snps,del_p1p2p3_quirk");
dwc->del_phy_power_chg_quirk = device_property_read_bool(dev,
"snps,del_phy_power_chg_quirk");
dwc->lfps_filter_quirk = device_property_read_bool(dev,
"snps,lfps_filter_quirk");
dwc->rx_detect_poll_quirk = device_property_read_bool(dev,
"snps,rx_detect_poll_quirk");
dwc->dis_u3_susphy_quirk = device_property_read_bool(dev,
"snps,dis_u3_susphy_quirk");
dwc->dis_u2_susphy_quirk = device_property_read_bool(dev,
"snps,dis_u2_susphy_quirk");
dwc->dis_enblslpm_quirk = device_property_read_bool(dev,
"snps,dis_enblslpm_quirk");
dwc->tx_de_emphasis_quirk = device_property_read_bool(dev,
"snps,tx_de_emphasis_quirk");
device_property_read_u8(dev, "snps,tx_de_emphasis",
&tx_de_emphasis);
device_property_read_string(dev, "snps,hsphy_interface",
&dwc->hsphy_interface);
device_property_read_u32(dev, "snps,quirk-frame-length-adjustment",
&fladj);
if (pdata) {
dwc->maximum_speed = pdata->maximum_speed;
dwc->has_lpm_erratum = pdata->has_lpm_erratum;
if (pdata->lpm_nyet_threshold)
lpm_nyet_threshold = pdata->lpm_nyet_threshold;
dwc->is_utmi_l1_suspend = pdata->is_utmi_l1_suspend;
if (pdata->hird_threshold)
hird_threshold = pdata->hird_threshold;
dwc->needs_fifo_resize = pdata->tx_fifo_resize;
dwc->usb3_lpm_capable = pdata->usb3_lpm_capable;
dwc->dr_mode = pdata->dr_mode;
dwc->disable_scramble_quirk = pdata->disable_scramble_quirk;
dwc->u2exit_lfps_quirk = pdata->u2exit_lfps_quirk;
dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk;
dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk;
dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk;
dwc->del_phy_power_chg_quirk = pdata->del_phy_power_chg_quirk;
dwc->lfps_filter_quirk = pdata->lfps_filter_quirk;
dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk;
dwc->dis_u3_susphy_quirk = pdata->dis_u3_susphy_quirk;
dwc->dis_u2_susphy_quirk = pdata->dis_u2_susphy_quirk;
dwc->dis_enblslpm_quirk = pdata->dis_enblslpm_quirk;
dwc->tx_de_emphasis_quirk = pdata->tx_de_emphasis_quirk;
if (pdata->tx_de_emphasis)
tx_de_emphasis = pdata->tx_de_emphasis;
dwc->hsphy_interface = pdata->hsphy_interface;
fladj = pdata->fladj_value;
}
dwc->lpm_nyet_threshold = lpm_nyet_threshold;
dwc->tx_de_emphasis = tx_de_emphasis;
dwc->hird_threshold = hird_threshold
| (dwc->is_utmi_l1_suspend << 4);
platform_set_drvdata(pdev, dwc);
dwc3_cache_hwparams(dwc);
ret = dwc3_phy_setup(dwc);
if (ret)
goto err0;
ret = dwc3_core_get_phy(dwc);
if (ret)
goto err0;
spin_lock_init(&dwc->lock);
if (!dev->dma_mask) {
dev->dma_mask = dev->parent->dma_mask;
dev->dma_parms = dev->parent->dma_parms;
dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask);
}
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
pm_runtime_forbid(dev);
ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE);
if (ret) {
dev_err(dwc->dev, "failed to allocate event buffers\n");
ret = -ENOMEM;
goto err1;
}
if (IS_ENABLED(CONFIG_USB_DWC3_HOST))
dwc->dr_mode = USB_DR_MODE_HOST;
else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))
dwc->dr_mode = USB_DR_MODE_PERIPHERAL;
if (dwc->dr_mode == USB_DR_MODE_UNKNOWN)
dwc->dr_mode = USB_DR_MODE_OTG;
ret = dwc3_core_init(dwc);
if (ret) {
dev_err(dev, "failed to initialize core\n");
goto err1;
}
/* Check the maximum_speed parameter */
switch (dwc->maximum_speed) {
case USB_SPEED_LOW:
case USB_SPEED_FULL:
case USB_SPEED_HIGH:
case USB_SPEED_SUPER:
case USB_SPEED_SUPER_PLUS:
break;
default:
dev_err(dev, "invalid maximum_speed parameter %d\n",
dwc->maximum_speed);
/* fall through */
case USB_SPEED_UNKNOWN:
/* default to superspeed */
dwc->maximum_speed = USB_SPEED_SUPER;
/*
* default to superspeed plus if we are capable.
*/
if (dwc3_is_usb31(dwc) &&
(DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) ==
DWC3_GHWPARAMS3_SSPHY_IFC_GEN2))
dwc->maximum_speed = USB_SPEED_SUPER_PLUS;
break;
}
/* Adjust Frame Length */
dwc3_frame_length_adjustment(dwc, fladj);
usb_phy_set_suspend(dwc->usb2_phy, 0);
usb_phy_set_suspend(dwc->usb3_phy, 0);
ret = phy_power_on(dwc->usb2_generic_phy);
if (ret < 0)
goto err2;
ret = phy_power_on(dwc->usb3_generic_phy);
if (ret < 0)
goto err3;
ret = dwc3_event_buffers_setup(dwc);
if (ret) {
dev_err(dwc->dev, "failed to setup event buffers\n");
goto err4;
}
ret = dwc3_core_init_mode(dwc);
if (ret)
goto err5;
ret = dwc3_debugfs_init(dwc);
if (ret) {
dev_err(dev, "failed to initialize debugfs\n");
goto err6;
}
pm_runtime_allow(dev);
return 0;
err6:
dwc3_core_exit_mode(dwc);
err5:
dwc3_event_buffers_cleanup(dwc);
err4:
phy_power_off(dwc->usb3_generic_phy);
err3:
phy_power_off(dwc->usb2_generic_phy);
err2:
usb_phy_set_suspend(dwc->usb2_phy, 1);
usb_phy_set_suspend(dwc->usb3_phy, 1);
dwc3_core_exit(dwc);
err1:
dwc3_free_event_buffers(dwc);
dwc3_ulpi_exit(dwc);
err0:
/*
* restore res->start back to its original value so that, in case the
* probe is deferred, we don't end up getting error in request the
* memory region the next time probe is called.
*/
res->start -= DWC3_GLOBALS_REGS_START;
return ret;
}
