void mmc_gpiod_request_cd_irq(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
int irq = -EINVAL;
int ret;
if (host->slot.cd_irq >= 0 || !ctx || !ctx->cd_gpio)
return;
/*
* Do not use IRQ if the platform prefers to poll, e.g., because that
* IRQ number is already used by another unit and cannot be shared.
*/
if (!(host->caps & MMC_CAP_NEEDS_POLL))
irq = gpiod_to_irq(ctx->cd_gpio);
if (irq >= 0) {
if (!ctx->cd_gpio_isr)
ctx->cd_gpio_isr = mmc_gpio_cd_irqt;
ret = devm_request_threaded_irq(host->parent, irq,
NULL, ctx->cd_gpio_isr,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
ctx->cd_label, host);
if (ret < 0)
irq = ret;
}
host->slot.cd_irq = irq;
if (irq < 0)
host->caps |= MMC_CAP_NEEDS_POLL;
}
void mmc_gpiod_request_cd_irq(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
int ret, irq;
if (host->slot.cd_irq >= 0 || !ctx || !ctx->cd_gpio)
return;
irq = gpiod_to_irq(ctx->cd_gpio);
/*
* Even if gpiod_to_irq() returns a valid IRQ number, the platform might
* still prefer to poll, e.g., because that IRQ number is already used
* by another unit and cannot be shared.
*/
if (irq >= 0 && host->caps & MMC_CAP_NEEDS_POLL)
irq = -EINVAL;
if (irq >= 0) {
ret = devm_request_threaded_irq(&host->class_dev, irq,
NULL, mmc_gpio_cd_irqt,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
ctx->cd_label, host);
if (ret < 0)
irq = ret;
}
host->slot.cd_irq = irq;
if (irq < 0)
host->caps |= MMC_CAP_NEEDS_POLL;
}
static int sdhci_acpi_add_own_cd(struct device *dev, struct mmc_host *mmc)
{
struct gpio_desc *desc;
unsigned long flags;
int err, irq;
desc = devm_gpiod_get_index(dev, "sd_cd", 0);
if (IS_ERR(desc)) {
err = PTR_ERR(desc);
goto out;
}
err = gpiod_direction_input(desc);
if (err)
goto out_free;
irq = gpiod_to_irq(desc);
if (irq < 0) {
err = irq;
goto out_free;
}
flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
err = devm_request_irq(dev, irq, sdhci_acpi_sd_cd, flags, "sd_cd", mmc);
if (err)
goto out_free;
return 0;
out_free:
devm_gpiod_put(dev, desc);
out:
dev_warn(dev, "failed to setup card detect wake up\n");
return err;
}
static int max3355_probe(struct platform_device *pdev)
{
struct max3355_data *data;
struct gpio_desc *gpiod;
int irq, err;
data = devm_kzalloc(&pdev->dev, sizeof(struct max3355_data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
gpiod = devm_gpiod_get(&pdev->dev, "id", GPIOD_IN);
if (IS_ERR(gpiod)) {
dev_err(&pdev->dev, "failed to get ID_OUT GPIO\n");
return PTR_ERR(gpiod);
}
data->id_gpiod = gpiod;
gpiod = devm_gpiod_get(&pdev->dev, "maxim,shdn", GPIOD_OUT_HIGH);
if (IS_ERR(gpiod)) {
dev_err(&pdev->dev, "failed to get SHDN# GPIO\n");
return PTR_ERR(gpiod);
}
data->shdn_gpiod = gpiod;
data->edev = devm_extcon_dev_allocate(&pdev->dev, max3355_cable);
if (IS_ERR(data->edev)) {
dev_err(&pdev->dev, "failed to allocate extcon device\n");
return PTR_ERR(data->edev);
}
err = devm_extcon_dev_register(&pdev->dev, data->edev);
if (err < 0) {
dev_err(&pdev->dev, "failed to register extcon device\n");
return err;
}
irq = gpiod_to_irq(data->id_gpiod);
if (irq < 0) {
dev_err(&pdev->dev, "failed to translate ID_OUT GPIO to IRQ\n");
return irq;
}
err = devm_request_threaded_irq(&pdev->dev, irq, NULL, max3355_id_irq,
IRQF_ONESHOT | IRQF_NO_SUSPEND |
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING,
pdev->name, data);
if (err < 0) {
dev_err(&pdev->dev, "failed to request ID_OUT IRQ\n");
return err;
}
platform_set_drvdata(pdev, data);
/* Perform initial detection */
max3355_id_irq(irq, data);
return 0;
}
/**
* phy_mdm6600_init_irq() - initialize mdm6600 status IRQ lines
* @ddata: device driver data
*/
static void phy_mdm6600_init_irq(struct phy_mdm6600 *ddata)
{
struct device *dev = ddata->dev;
int i, error, irq;
for (i = PHY_MDM6600_STATUS0;
i <= PHY_MDM6600_STATUS2; i++) {
struct gpio_desc *gpio = ddata->status_gpios->desc[i];
irq = gpiod_to_irq(gpio);
if (irq <= 0)
continue;
error = devm_request_threaded_irq(dev, irq, NULL,
phy_mdm6600_irq_thread,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
"mdm6600",
ddata);
if (error)
dev_warn(dev, "no modem status irq%i: %i\n",
irq, error);
}
}
static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
int ret = 0, i;
clk_prepare_enable(skt->clk);
if (skt->ops->hw_init) {
ret = skt->ops->hw_init(skt);
if (ret)
return ret;
}
for (i = 0; i < ARRAY_SIZE(skt->stat); i++) {
if (gpio_is_valid(skt->stat[i].gpio)) {
unsigned long flags = GPIOF_IN;
/* CD is active low by default */
if (i == SOC_STAT_CD)
flags |= GPIOF_ACTIVE_LOW;
ret = devm_gpio_request_one(skt->socket.dev.parent,
skt->stat[i].gpio, flags,
skt->stat[i].name);
if (ret) {
__soc_pcmcia_hw_shutdown(skt, i);
return ret;
}
skt->stat[i].desc = gpio_to_desc(skt->stat[i].gpio);
}
if (i < SOC_STAT_VS1 && skt->stat[i].desc) {
int irq = gpiod_to_irq(skt->stat[i].desc);
if (irq > 0) {
if (i == SOC_STAT_RDY)
skt->socket.pci_irq = irq;
else
skt->stat[i].irq = irq;
}
}
if (skt->stat[i].irq) {
ret = request_irq(skt->stat[i].irq,
soc_common_pcmcia_interrupt,
IRQF_TRIGGER_NONE,
skt->stat[i].name, skt);
if (ret) {
__soc_pcmcia_hw_shutdown(skt, i);
return ret;
}
}
}
return ret;
}
static int usb_phy_generic_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct usb_phy_generic *nop;
int err;
nop = devm_kzalloc(dev, sizeof(*nop), GFP_KERNEL);
if (!nop)
return -ENOMEM;
err = usb_phy_gen_create_phy(dev, nop, dev_get_platdata(&pdev->dev));
if (err)
return err;
if (nop->gpiod_vbus) {
err = devm_request_threaded_irq(&pdev->dev,
gpiod_to_irq(nop->gpiod_vbus),
NULL, nop_gpio_vbus_thread,
VBUS_IRQ_FLAGS, "vbus_detect",
nop);
if (err) {
dev_err(&pdev->dev, "can't request irq %i, err: %d\n",
gpiod_to_irq(nop->gpiod_vbus), err);
return err;
}
nop->phy.otg->state = gpiod_get_value(nop->gpiod_vbus) ?
OTG_STATE_B_PERIPHERAL : OTG_STATE_B_IDLE;
}
nop->phy.init = usb_gen_phy_init;
nop->phy.shutdown = usb_gen_phy_shutdown;
err = usb_add_phy_dev(&nop->phy);
if (err) {
dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
err);
return err;
}
platform_set_drvdata(pdev, nop);
return 0;
}
static int hdmic_probe(struct platform_device *pdev)
{
struct panel_drv_data *ddata;
struct omap_dss_device *dssdev;
struct gpio_desc *gpio;
int r;
ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
if (!ddata)
return -ENOMEM;
platform_set_drvdata(pdev, ddata);
ddata->dev = &pdev->dev;
mutex_init(&ddata->hpd_lock);
/* HPD GPIO */
gpio = devm_gpiod_get_optional(&pdev->dev, "hpd", GPIOD_IN);
if (IS_ERR(gpio)) {
dev_err(&pdev->dev, "failed to parse HPD gpio\n");
return PTR_ERR(gpio);
}
ddata->hpd_gpio = gpio;
if (ddata->hpd_gpio) {
r = devm_request_threaded_irq(&pdev->dev,
gpiod_to_irq(ddata->hpd_gpio),
NULL, hdmic_hpd_isr,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
"hdmic hpd", ddata);
if (r)
return r;
}
dssdev = &ddata->dssdev;
dssdev->ops = &hdmic_ops;
dssdev->dev = &pdev->dev;
dssdev->type = OMAP_DISPLAY_TYPE_HDMI;
dssdev->display = true;
dssdev->owner = THIS_MODULE;
dssdev->of_ports = BIT(0);
dssdev->ops_flags = ddata->hpd_gpio
? OMAP_DSS_DEVICE_OP_DETECT | OMAP_DSS_DEVICE_OP_HPD
: 0;
omapdss_display_init(dssdev);
omapdss_device_register(dssdev);
return 0;
}
struct mctrl_gpios *mctrl_gpio_init(struct uart_port *port, unsigned int idx)
{
struct mctrl_gpios *gpios;
enum mctrl_gpio_idx i;
gpios = mctrl_gpio_init_noauto(port->dev, idx);
if (IS_ERR(gpios))
return gpios;
gpios->port = port;
for (i = 0; i < UART_GPIO_MAX; ++i) {
int ret;
if (!gpios->gpio[i] || mctrl_gpios_desc[i].dir_out)
continue;
ret = gpiod_to_irq(gpios->gpio[i]);
if (ret <= 0) {
dev_err(port->dev,
"failed to find corresponding irq for %s (idx=%d, err=%d)\n",
mctrl_gpios_desc[i].name, idx, ret);
return ERR_PTR(ret);
}
gpios->irq[i] = ret;
/* irqs should only be enabled in .enable_ms */
irq_set_status_flags(gpios->irq[i], IRQ_NOAUTOEN);
ret = devm_request_irq(port->dev, gpios->irq[i],
mctrl_gpio_irq_handle,
IRQ_TYPE_EDGE_BOTH, dev_name(port->dev),
gpios);
if (ret) {
/* alternatively implement polling */
dev_err(port->dev,
"failed to request irq for %s (idx=%d, err=%d)\n",
mctrl_gpios_desc[i].name, idx, ret);
return ERR_PTR(ret);
}
}
return gpios;
}
static int gpio_charger_get_irq(struct device *dev, void *dev_id,
struct gpio_desc *gpio)
{
int ret, irq = gpiod_to_irq(gpio);
if (irq > 0) {
ret = devm_request_any_context_irq(dev, irq, gpio_charger_irq,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING,
dev_name(dev),
dev_id);
if (ret < 0) {
dev_warn(dev, "Failed to request irq: %d\n", ret);
irq = 0;
}
}
return irq;
}
static int setup_gpio(struct pi433_device *device)
{
char name[5];
int retval;
int i;
const irq_handler_t DIO_irq_handler[NUM_DIO] = {
DIO0_irq_handler,
DIO1_irq_handler
};
for (i = 0; i < NUM_DIO; i++) {
/* "construct" name and get the gpio descriptor */
snprintf(name, sizeof(name), "DIO%d", i);
device->gpiod[i] = gpiod_get(&device->spi->dev, name,
0 /*GPIOD_IN*/);
if (device->gpiod[i] == ERR_PTR(-ENOENT)) {
dev_dbg(&device->spi->dev,
"Could not find entry for %s. Ignoring.", name);
continue;
}
if (device->gpiod[i] == ERR_PTR(-EBUSY))
dev_dbg(&device->spi->dev, "%s is busy.", name);
if (IS_ERR(device->gpiod[i])) {
retval = PTR_ERR(device->gpiod[i]);
/* release already allocated gpios */
for (i--; i >= 0; i--) {
free_irq(device->irq_num[i], device);
gpiod_put(device->gpiod[i]);
}
return retval;
}
/* configure the pin */
gpiod_unexport(device->gpiod[i]);
retval = gpiod_direction_input(device->gpiod[i]);
if (retval)
return retval;
/* configure irq */
device->irq_num[i] = gpiod_to_irq(device->gpiod[i]);
if (device->irq_num[i] < 0) {
device->gpiod[i] = ERR_PTR(-EINVAL);
return device->irq_num[i];
}
retval = request_irq(device->irq_num[i],
DIO_irq_handler[i],
0, /* flags */
name,
device);
if (retval)
return retval;
dev_dbg(&device->spi->dev, "%s successfully configured", name);
}
return 0;
}
static int nokia_bluetooth_serdev_probe(struct serdev_device *serdev)
{
struct device *dev = &serdev->dev;
struct nokia_bt_dev *btdev;
struct clk *sysclk;
int err = 0;
btdev = devm_kzalloc(dev, sizeof(*btdev), GFP_KERNEL);
if (!btdev)
return -ENOMEM;
btdev->hu.serdev = btdev->serdev = serdev;
serdev_device_set_drvdata(serdev, btdev);
btdev->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(btdev->reset)) {
err = PTR_ERR(btdev->reset);
dev_err(dev, "could not get reset gpio: %d", err);
return err;
}
btdev->wakeup_host = devm_gpiod_get(dev, "host-wakeup", GPIOD_IN);
if (IS_ERR(btdev->wakeup_host)) {
err = PTR_ERR(btdev->wakeup_host);
dev_err(dev, "could not get host wakeup gpio: %d", err);
return err;
}
btdev->wake_irq = gpiod_to_irq(btdev->wakeup_host);
err = devm_request_threaded_irq(dev, btdev->wake_irq, NULL,
wakeup_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"wakeup", btdev);
if (err) {
dev_err(dev, "could request wakeup irq: %d", err);
return err;
}
btdev->wakeup_bt = devm_gpiod_get(dev, "bluetooth-wakeup",
GPIOD_OUT_LOW);
if (IS_ERR(btdev->wakeup_bt)) {
err = PTR_ERR(btdev->wakeup_bt);
dev_err(dev, "could not get BT wakeup gpio: %d", err);
return err;
}
sysclk = devm_clk_get(dev, "sysclk");
if (IS_ERR(sysclk)) {
err = PTR_ERR(sysclk);
dev_err(dev, "could not get sysclk: %d", err);
return err;
}
clk_prepare_enable(sysclk);
btdev->sysclk_speed = clk_get_rate(sysclk);
clk_disable_unprepare(sysclk);
skb_queue_head_init(&btdev->txq);
btdev->hu.priv = btdev;
btdev->hu.alignment = 2; /* Nokia H4+ is word aligned */
err = hci_uart_register_device(&btdev->hu, &nokia_proto);
if (err) {
dev_err(dev, "could not register bluetooth uart: %d", err);
return err;
}
return 0;
}
static int arche_platform_probe(struct platform_device *pdev)
{
struct arche_platform_drvdata *arche_pdata;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
int ret;
unsigned int flags;
arche_pdata = devm_kzalloc(&pdev->dev, sizeof(*arche_pdata),
GFP_KERNEL);
if (!arche_pdata)
return -ENOMEM;
/* setup svc reset gpio */
arche_pdata->is_reset_act_hi = of_property_read_bool(np,
"svc,reset-active-high");
if (arche_pdata->is_reset_act_hi)
flags = GPIOD_OUT_HIGH;
else
flags = GPIOD_OUT_LOW;
arche_pdata->svc_reset = devm_gpiod_get(dev, "svc,reset", flags);
if (IS_ERR(arche_pdata->svc_reset)) {
ret = PTR_ERR(arche_pdata->svc_reset);
dev_err(dev, "failed to request svc-reset GPIO: %d\n", ret);
return ret;
}
arche_platform_set_state(arche_pdata, ARCHE_PLATFORM_STATE_OFF);
arche_pdata->svc_sysboot = devm_gpiod_get(dev, "svc,sysboot",
GPIOD_OUT_LOW);
if (IS_ERR(arche_pdata->svc_sysboot)) {
ret = PTR_ERR(arche_pdata->svc_sysboot);
dev_err(dev, "failed to request sysboot0 GPIO: %d\n", ret);
return ret;
}
/* setup the clock request gpio first */
arche_pdata->svc_refclk_req = devm_gpiod_get(dev, "svc,refclk-req",
GPIOD_IN);
if (IS_ERR(arche_pdata->svc_refclk_req)) {
ret = PTR_ERR(arche_pdata->svc_refclk_req);
dev_err(dev, "failed to request svc-clk-req GPIO: %d\n", ret);
return ret;
}
/* setup refclk2 to follow the pin */
arche_pdata->svc_ref_clk = devm_clk_get(dev, "svc_ref_clk");
if (IS_ERR(arche_pdata->svc_ref_clk)) {
ret = PTR_ERR(arche_pdata->svc_ref_clk);
dev_err(dev, "failed to get svc_ref_clk: %d\n", ret);
return ret;
}
platform_set_drvdata(pdev, arche_pdata);
arche_pdata->num_apbs = of_get_child_count(np);
dev_dbg(dev, "Number of APB's available - %d\n", arche_pdata->num_apbs);
arche_pdata->wake_detect = devm_gpiod_get(dev, "svc,wake-detect",
GPIOD_IN);
if (IS_ERR(arche_pdata->wake_detect)) {
ret = PTR_ERR(arche_pdata->wake_detect);
dev_err(dev, "Failed requesting wake_detect GPIO: %d\n", ret);
return ret;
}
arche_platform_set_wake_detect_state(arche_pdata, WD_STATE_IDLE);
arche_pdata->dev = &pdev->dev;
spin_lock_init(&arche_pdata->wake_lock);
mutex_init(&arche_pdata->platform_state_mutex);
arche_pdata->wake_detect_irq =
gpiod_to_irq(arche_pdata->wake_detect);
ret = devm_request_threaded_irq(dev, arche_pdata->wake_detect_irq,
arche_platform_wd_irq,
arche_platform_wd_irq_thread,
IRQF_TRIGGER_FALLING |
IRQF_TRIGGER_RISING | IRQF_ONESHOT,
dev_name(dev), arche_pdata);
if (ret) {
dev_err(dev, "failed to request wake detect IRQ %d\n", ret);
return ret;
}
disable_irq(arche_pdata->wake_detect_irq);
ret = device_create_file(dev, &dev_attr_state);
if (ret) {
dev_err(dev, "failed to create state file in sysfs\n");
return ret;
}
ret = of_platform_populate(np, NULL, NULL, dev);
if (ret) {
dev_err(dev, "failed to populate child nodes %d\n", ret);
goto err_device_remove;
}
arche_pdata->pm_notifier.notifier_call = arche_platform_pm_notifier;
ret = register_pm_notifier(&arche_pdata->pm_notifier);
if (ret) {
dev_err(dev, "failed to register pm notifier %d\n", ret);
goto err_device_remove;
}
/* Explicitly power off if requested */
if (!of_property_read_bool(pdev->dev.of_node, "arche,init-off")) {
mutex_lock(&arche_pdata->platform_state_mutex);
ret = arche_platform_coldboot_seq(arche_pdata);
if (ret) {
dev_err(dev, "Failed to cold boot svc %d\n", ret);
goto err_coldboot;
}
arche_platform_wd_irq_en(arche_pdata);
mutex_unlock(&arche_pdata->platform_state_mutex);
}
dev_info(dev, "Device registered successfully\n");
return 0;
err_coldboot:
mutex_unlock(&arche_pdata->platform_state_mutex);
err_device_remove:
device_remove_file(&pdev->dev, &dev_attr_state);
return ret;
}
static int rotary_encoder_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rotary_encoder *encoder;
struct input_dev *input;
irq_handler_t handler;
u32 steps_per_period;
unsigned int i;
int err;
encoder = devm_kzalloc(dev, sizeof(struct rotary_encoder), GFP_KERNEL);
if (!encoder)
return -ENOMEM;
mutex_init(&encoder->access_mutex);
device_property_read_u32(dev, "rotary-encoder,steps", &encoder->steps);
err = device_property_read_u32(dev, "rotary-encoder,steps-per-period",
&steps_per_period);
if (err) {
/*
* The 'half-period' property has been deprecated, you must
* use 'steps-per-period' and set an appropriate value, but
* we still need to parse it to maintain compatibility. If
* neither property is present we fall back to the one step
* per period behavior.
*/
steps_per_period = device_property_read_bool(dev,
"rotary-encoder,half-period") ? 2 : 1;
}
encoder->rollover =
device_property_read_bool(dev, "rotary-encoder,rollover");
if (!device_property_present(dev, "rotary-encoder,encoding") ||
!device_property_match_string(dev, "rotary-encoder,encoding",
"gray")) {
dev_info(dev, "gray");
encoder->encoding = ROTENC_GRAY;
} else if (!device_property_match_string(dev, "rotary-encoder,encoding",
"binary")) {
dev_info(dev, "binary");
encoder->encoding = ROTENC_BINARY;
} else {
dev_err(dev, "unknown encoding setting\n");
return -EINVAL;
}
device_property_read_u32(dev, "linux,axis", &encoder->axis);
encoder->relative_axis =
device_property_read_bool(dev, "rotary-encoder,relative-axis");
encoder->gpios = devm_gpiod_get_array(dev, NULL, GPIOD_IN);
if (IS_ERR(encoder->gpios)) {
dev_err(dev, "unable to get gpios\n");
return PTR_ERR(encoder->gpios);
}
if (encoder->gpios->ndescs < 2) {
dev_err(dev, "not enough gpios found\n");
return -EINVAL;
}
input = devm_input_allocate_device(dev);
if (!input)
return -ENOMEM;
encoder->input = input;
input->name = pdev->name;
input->id.bustype = BUS_HOST;
input->dev.parent = dev;
if (encoder->relative_axis)
input_set_capability(input, EV_REL, encoder->axis);
else
input_set_abs_params(input,
encoder->axis, 0, encoder->steps, 0, 1);
switch (steps_per_period >> (encoder->gpios->ndescs - 2)) {
case 4:
handler = &rotary_encoder_quarter_period_irq;
encoder->last_stable = rotary_encoder_get_state(encoder);
break;
case 2:
handler = &rotary_encoder_half_period_irq;
encoder->last_stable = rotary_encoder_get_state(encoder);
break;
case 1:
handler = &rotary_encoder_irq;
break;
default:
dev_err(dev, "'%d' is not a valid steps-per-period value\n",
steps_per_period);
return -EINVAL;
}
encoder->irq =
devm_kcalloc(dev,
encoder->gpios->ndescs, sizeof(*encoder->irq),
GFP_KERNEL);
if (!encoder->irq)
return -ENOMEM;
for (i = 0; i < encoder->gpios->ndescs; ++i) {
encoder->irq[i] = gpiod_to_irq(encoder->gpios->desc[i]);
err = devm_request_threaded_irq(dev, encoder->irq[i],
NULL, handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
DRV_NAME, encoder);
if (err) {
dev_err(dev, "unable to request IRQ %d (gpio#%d)\n",
encoder->irq[i], i);
return err;
}
}
err = input_register_device(input);
if (err) {
dev_err(dev, "failed to register input device\n");
return err;
}
device_init_wakeup(dev,
device_property_read_bool(dev, "wakeup-source"));
platform_set_drvdata(pdev, encoder);
return 0;
}
static int gpio_charger_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
const struct gpio_charger_platform_data *pdata = dev->platform_data;
struct power_supply_config psy_cfg = {};
struct gpio_charger *gpio_charger;
struct power_supply_desc *charger_desc;
unsigned long flags;
int irq, ret;
if (!pdata && !dev->of_node) {
dev_err(dev, "No platform data\n");
return -ENOENT;
}
gpio_charger = devm_kzalloc(dev, sizeof(*gpio_charger), GFP_KERNEL);
if (!gpio_charger)
return -ENOMEM;
/*
* This will fetch a GPIO descriptor from device tree, ACPI or
* boardfile descriptor tables. It's good to try this first.
*/
gpio_charger->gpiod = devm_gpiod_get(dev, NULL, GPIOD_IN);
/*
* If this fails and we're not using device tree, try the
* legacy platform data method.
*/
if (IS_ERR(gpio_charger->gpiod) && !dev->of_node) {
/* Non-DT: use legacy GPIO numbers */
if (!gpio_is_valid(pdata->gpio)) {
dev_err(dev, "Invalid gpio pin in pdata\n");
return -EINVAL;
}
flags = GPIOF_IN;
if (pdata->gpio_active_low)
flags |= GPIOF_ACTIVE_LOW;
ret = devm_gpio_request_one(dev, pdata->gpio, flags,
dev_name(dev));
if (ret) {
dev_err(dev, "Failed to request gpio pin: %d\n", ret);
return ret;
}
/* Then convert this to gpiod for now */
gpio_charger->gpiod = gpio_to_desc(pdata->gpio);
} else if (IS_ERR(gpio_charger->gpiod)) {
/* Just try again if this happens */
if (PTR_ERR(gpio_charger->gpiod) == -EPROBE_DEFER)
return -EPROBE_DEFER;
dev_err(dev, "error getting GPIO descriptor\n");
return PTR_ERR(gpio_charger->gpiod);
}
charger_desc = &gpio_charger->charger_desc;
charger_desc->properties = gpio_charger_properties;
charger_desc->num_properties = ARRAY_SIZE(gpio_charger_properties);
charger_desc->get_property = gpio_charger_get_property;
psy_cfg.of_node = dev->of_node;
psy_cfg.drv_data = gpio_charger;
if (pdata) {
charger_desc->name = pdata->name;
charger_desc->type = pdata->type;
psy_cfg.supplied_to = pdata->supplied_to;
psy_cfg.num_supplicants = pdata->num_supplicants;
} else {
charger_desc->name = dev->of_node->name;
charger_desc->type = gpio_charger_get_type(dev);
}
if (!charger_desc->name)
charger_desc->name = pdev->name;
gpio_charger->charger = devm_power_supply_register(dev, charger_desc,
&psy_cfg);
if (IS_ERR(gpio_charger->charger)) {
ret = PTR_ERR(gpio_charger->charger);
dev_err(dev, "Failed to register power supply: %d\n", ret);
return ret;
}
irq = gpiod_to_irq(gpio_charger->gpiod);
if (irq > 0) {
ret = devm_request_any_context_irq(dev, irq, gpio_charger_irq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
dev_name(dev), gpio_charger->charger);
if (ret < 0)
dev_warn(dev, "Failed to request irq: %d\n", ret);
else
gpio_charger->irq = irq;
}
platform_set_drvdata(pdev, gpio_charger);
device_init_wakeup(dev, 1);
return 0;
}
static int sirf_probe(struct serdev_device *serdev)
{
struct device *dev = &serdev->dev;
struct gnss_device *gdev;
struct sirf_data *data;
int ret;
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
gdev = gnss_allocate_device(dev);
if (!gdev)
return -ENOMEM;
gdev->type = GNSS_TYPE_SIRF;
gdev->ops = &sirf_gnss_ops;
gnss_set_drvdata(gdev, data);
data->serdev = serdev;
data->gdev = gdev;
init_waitqueue_head(&data->power_wait);
serdev_device_set_drvdata(serdev, data);
serdev_device_set_client_ops(serdev, &sirf_serdev_ops);
ret = sirf_parse_dt(serdev);
if (ret)
goto err_put_device;
data->vcc = devm_regulator_get(dev, "vcc");
if (IS_ERR(data->vcc)) {
ret = PTR_ERR(data->vcc);
goto err_put_device;
}
data->on_off = devm_gpiod_get_optional(dev, "sirf,onoff",
GPIOD_OUT_LOW);
if (IS_ERR(data->on_off))
goto err_put_device;
if (data->on_off) {
data->wakeup = devm_gpiod_get_optional(dev, "sirf,wakeup",
GPIOD_IN);
if (IS_ERR(data->wakeup))
goto err_put_device;
/*
* Configurations where WAKEUP has been left not connected,
* are currently not supported.
*/
if (!data->wakeup) {
dev_err(dev, "no wakeup gpio specified\n");
ret = -ENODEV;
goto err_put_device;
}
}
if (data->wakeup) {
ret = gpiod_to_irq(data->wakeup);
if (ret < 0)
goto err_put_device;
data->irq = ret;
ret = devm_request_threaded_irq(dev, data->irq, NULL,
sirf_wakeup_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"wakeup", data);
if (ret)
goto err_put_device;
}
if (data->on_off) {
ret = regulator_enable(data->vcc);
if (ret)
goto err_put_device;
/* Wait for chip to boot into hibernate mode */
msleep(SIRF_BOOT_DELAY);
}
if (IS_ENABLED(CONFIG_PM)) {
pm_runtime_set_suspended(dev); /* clear runtime_error flag */
pm_runtime_enable(dev);
} else {
ret = sirf_runtime_resume(dev);
if (ret < 0)
goto err_disable_vcc;
}
ret = gnss_register_device(gdev);
if (ret)
goto err_disable_rpm;
return 0;
err_disable_rpm:
if (IS_ENABLED(CONFIG_PM))
pm_runtime_disable(dev);
else
sirf_runtime_suspend(dev);
err_disable_vcc:
if (data->on_off)
regulator_disable(data->vcc);
err_put_device:
gnss_put_device(data->gdev);
return ret;
}
static int gpio_keys_setup_key(struct platform_device *pdev,
struct input_dev *input,
struct gpio_keys_drvdata *ddata,
const struct gpio_keys_button *button,
int idx,
struct fwnode_handle *child)
{
const char *desc = button->desc ? button->desc : "gpio_keys";
struct device *dev = &pdev->dev;
struct gpio_button_data *bdata = &ddata->data[idx];
irq_handler_t isr;
unsigned long irqflags;
int irq;
int error;
bdata->input = input;
bdata->button = button;
spin_lock_init(&bdata->lock);
if (child) {
bdata->gpiod = devm_fwnode_get_gpiod_from_child(dev, NULL,
child,
GPIOD_IN,
desc);
if (IS_ERR(bdata->gpiod)) {
error = PTR_ERR(bdata->gpiod);
if (error == -ENOENT) {
/*
* GPIO is optional, we may be dealing with
* purely interrupt-driven setup.
*/
bdata->gpiod = NULL;
} else {
if (error != -EPROBE_DEFER)
dev_err(dev, "failed to get gpio: %d\n",
error);
return error;
}
}
} else if (gpio_is_valid(button->gpio)) {
/*
* Legacy GPIO number, so request the GPIO here and
* convert it to descriptor.
*/
unsigned flags = GPIOF_IN;
if (button->active_low)
flags |= GPIOF_ACTIVE_LOW;
error = devm_gpio_request_one(dev, button->gpio, flags, desc);
if (error < 0) {
dev_err(dev, "Failed to request GPIO %d, error %d\n",
button->gpio, error);
return error;
}
bdata->gpiod = gpio_to_desc(button->gpio);
if (!bdata->gpiod)
return -EINVAL;
}
if (bdata->gpiod) {
if (button->debounce_interval) {
error = gpiod_set_debounce(bdata->gpiod,
button->debounce_interval * 1000);
/* use timer if gpiolib doesn't provide debounce */
if (error < 0)
bdata->software_debounce =
button->debounce_interval;
}
if (button->irq) {
bdata->irq = button->irq;
} else {
irq = gpiod_to_irq(bdata->gpiod);
if (irq < 0) {
error = irq;
dev_err(dev,
"Unable to get irq number for GPIO %d, error %d\n",
button->gpio, error);
return error;
}
bdata->irq = irq;
}
INIT_DELAYED_WORK(&bdata->work, gpio_keys_gpio_work_func);
isr = gpio_keys_gpio_isr;
irqflags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
} else {
if (!button->irq) {
dev_err(dev, "Found button without gpio or irq\n");
return -EINVAL;
}
bdata->irq = button->irq;
if (button->type && button->type != EV_KEY) {
dev_err(dev, "Only EV_KEY allowed for IRQ buttons.\n");
return -EINVAL;
}
bdata->release_delay = button->debounce_interval;
setup_timer(&bdata->release_timer,
gpio_keys_irq_timer, (unsigned long)bdata);
isr = gpio_keys_irq_isr;
irqflags = 0;
}
bdata->code = &ddata->keymap[idx];
*bdata->code = button->code;
input_set_capability(input, button->type ?: EV_KEY, *bdata->code);
/*
* Install custom action to cancel release timer and
* workqueue item.
*/
error = devm_add_action(dev, gpio_keys_quiesce_key, bdata);
if (error) {
dev_err(dev, "failed to register quiesce action, error: %d\n",
error);
return error;
}
/*
* If platform has specified that the button can be disabled,
* we don't want it to share the interrupt line.
*/
if (!button->can_disable)
irqflags |= IRQF_SHARED;
error = devm_request_any_context_irq(dev, bdata->irq, isr, irqflags,
desc, bdata);
if (error < 0) {
dev_err(dev, "Unable to claim irq %d; error %d\n",
bdata->irq, error);
return error;
}
return 0;
}
static int gpio_ir_recv_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct gpio_rc_dev *gpio_dev;
struct rc_dev *rcdev;
int rc;
if (!np)
return -ENODEV;
gpio_dev = devm_kzalloc(dev, sizeof(*gpio_dev), GFP_KERNEL);
if (!gpio_dev)
return -ENOMEM;
gpio_dev->gpiod = devm_gpiod_get(dev, NULL, GPIOD_IN);
if (IS_ERR(gpio_dev->gpiod)) {
rc = PTR_ERR(gpio_dev->gpiod);
/* Just try again if this happens */
if (rc != -EPROBE_DEFER)
dev_err(dev, "error getting gpio (%d)\n", rc);
return rc;
}
gpio_dev->irq = gpiod_to_irq(gpio_dev->gpiod);
if (gpio_dev->irq < 0)
return gpio_dev->irq;
rcdev = devm_rc_allocate_device(dev, RC_DRIVER_IR_RAW);
if (!rcdev)
return -ENOMEM;
rcdev->priv = gpio_dev;
rcdev->device_name = GPIO_IR_DEVICE_NAME;
rcdev->input_phys = GPIO_IR_DEVICE_NAME "/input0";
rcdev->input_id.bustype = BUS_HOST;
rcdev->input_id.vendor = 0x0001;
rcdev->input_id.product = 0x0001;
rcdev->input_id.version = 0x0100;
rcdev->dev.parent = dev;
rcdev->driver_name = KBUILD_MODNAME;
rcdev->min_timeout = 1;
rcdev->timeout = IR_DEFAULT_TIMEOUT;
rcdev->max_timeout = 10 * IR_DEFAULT_TIMEOUT;
rcdev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
rcdev->map_name = of_get_property(np, "linux,rc-map-name", NULL);
if (!rcdev->map_name)
rcdev->map_name = RC_MAP_EMPTY;
gpio_dev->rcdev = rcdev;
rc = devm_rc_register_device(dev, rcdev);
if (rc < 0) {
dev_err(dev, "failed to register rc device (%d)\n", rc);
return rc;
}
platform_set_drvdata(pdev, gpio_dev);
return devm_request_irq(dev, gpio_dev->irq, gpio_ir_recv_irq,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
"gpio-ir-recv-irq", gpio_dev);
}
/**
* phy_mdm6600_device_power_on() - power on mdm6600 device
* @ddata: device driver data
*
* To get the integrated USB phy in MDM6600 takes some hoops. We must ensure
* the shared USB bootmode GPIOs are configured, then request modem start-up,
* reset and power-up.. And then we need to recycle the shared USB bootmode
* GPIOs as they are also used for Out of Band (OOB) wake for the USB and
* TS 27.010 serial mux.
*/
static int phy_mdm6600_device_power_on(struct phy_mdm6600 *ddata)
{
struct gpio_desc *mode_gpio0, *mode_gpio1, *reset_gpio, *power_gpio;
int error = 0, wakeirq;
mode_gpio0 = ddata->mode_gpios->desc[PHY_MDM6600_MODE0];
mode_gpio1 = ddata->mode_gpios->desc[PHY_MDM6600_MODE1];
reset_gpio = ddata->ctrl_gpios[PHY_MDM6600_RESET];
power_gpio = ddata->ctrl_gpios[PHY_MDM6600_POWER];
/*
* Shared GPIOs must be low for normal USB mode. After booting
* they are used for OOB wake signaling. These can be also used
* to configure USB flashing mode later on based on a module
* parameter.
*/
gpiod_set_value_cansleep(mode_gpio0, 0);
gpiod_set_value_cansleep(mode_gpio1, 0);
/* Request start-up mode */
phy_mdm6600_cmd(ddata, PHY_MDM6600_CMD_NO_BYPASS);
/* Request a reset first */
gpiod_set_value_cansleep(reset_gpio, 0);
msleep(100);
/* Toggle power GPIO to request mdm6600 to start */
gpiod_set_value_cansleep(power_gpio, 1);
msleep(100);
gpiod_set_value_cansleep(power_gpio, 0);
/*
* Looks like the USB PHY needs between 2.2 to 4 seconds.
* If we try to use it before that, we will get L3 errors
* from omap-usb-host trying to access the PHY. See also
* phy_mdm6600_init() for -EPROBE_DEFER.
*/
msleep(PHY_MDM6600_PHY_DELAY_MS);
ddata->enabled = true;
/* Booting up the rest of MDM6600 will take total about 8 seconds */
dev_info(ddata->dev, "Waiting for power up request to complete..\n");
if (wait_for_completion_timeout(&ddata->ack,
msecs_to_jiffies(PHY_MDM6600_ENABLED_DELAY_MS))) {
if (ddata->status > PHY_MDM6600_STATUS_PANIC &&
ddata->status < PHY_MDM6600_STATUS_SHUTDOWN_ACK)
dev_info(ddata->dev, "Powered up OK\n");
} else {
ddata->enabled = false;
error = -ETIMEDOUT;
dev_err(ddata->dev, "Timed out powering up\n");
}
/* Reconfigure mode1 GPIO as input for OOB wake */
gpiod_direction_input(mode_gpio1);
wakeirq = gpiod_to_irq(mode_gpio1);
if (wakeirq <= 0)
return wakeirq;
error = devm_request_threaded_irq(ddata->dev, wakeirq, NULL,
phy_mdm6600_wakeirq_thread,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
"mdm6600-wake",
ddata);
if (error)
dev_warn(ddata->dev, "no modem wakeirq irq%i: %i\n",
wakeirq, error);
ddata->running = true;
return error;
}
static int palmas_usb_probe(struct platform_device *pdev)
{
struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
struct palmas_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct device_node *node = pdev->dev.of_node;
struct palmas_usb *palmas_usb;
int status;
palmas_usb = devm_kzalloc(&pdev->dev, sizeof(*palmas_usb), GFP_KERNEL);
if (!palmas_usb)
return -ENOMEM;
if (node && !pdata) {
palmas_usb->wakeup = of_property_read_bool(node, "ti,wakeup");
palmas_usb->enable_id_detection = of_property_read_bool(node,
"ti,enable-id-detection");
palmas_usb->enable_vbus_detection = of_property_read_bool(node,
"ti,enable-vbus-detection");
} else {
palmas_usb->wakeup = true;
palmas_usb->enable_id_detection = true;
palmas_usb->enable_vbus_detection = true;
if (pdata)
palmas_usb->wakeup = pdata->wakeup;
}
palmas_usb->id_gpiod = devm_gpiod_get_optional(&pdev->dev, "id",
GPIOD_IN);
if (IS_ERR(palmas_usb->id_gpiod)) {
dev_err(&pdev->dev, "failed to get id gpio\n");
return PTR_ERR(palmas_usb->id_gpiod);
}
palmas_usb->vbus_gpiod = devm_gpiod_get_optional(&pdev->dev, "vbus",
GPIOD_IN);
if (IS_ERR(palmas_usb->vbus_gpiod)) {
dev_err(&pdev->dev, "failed to get vbus gpio\n");
return PTR_ERR(palmas_usb->vbus_gpiod);
}
if (palmas_usb->enable_id_detection && palmas_usb->id_gpiod) {
palmas_usb->enable_id_detection = false;
palmas_usb->enable_gpio_id_detection = true;
}
if (palmas_usb->enable_vbus_detection && palmas_usb->vbus_gpiod) {
palmas_usb->enable_vbus_detection = false;
palmas_usb->enable_gpio_vbus_detection = true;
}
if (palmas_usb->enable_gpio_id_detection) {
u32 debounce;
if (of_property_read_u32(node, "debounce-delay-ms", &debounce))
debounce = USB_GPIO_DEBOUNCE_MS;
status = gpiod_set_debounce(palmas_usb->id_gpiod,
debounce * 1000);
if (status < 0)
palmas_usb->sw_debounce_jiffies = msecs_to_jiffies(debounce);
}
INIT_DELAYED_WORK(&palmas_usb->wq_detectid, palmas_gpio_id_detect);
palmas->usb = palmas_usb;
palmas_usb->palmas = palmas;
palmas_usb->dev = &pdev->dev;
palmas_usb_wakeup(palmas, palmas_usb->wakeup);
platform_set_drvdata(pdev, palmas_usb);
palmas_usb->edev = devm_extcon_dev_allocate(&pdev->dev,
palmas_extcon_cable);
if (IS_ERR(palmas_usb->edev)) {
dev_err(&pdev->dev, "failed to allocate extcon device\n");
return -ENOMEM;
}
status = devm_extcon_dev_register(&pdev->dev, palmas_usb->edev);
if (status) {
dev_err(&pdev->dev, "failed to register extcon device\n");
return status;
}
if (palmas_usb->enable_id_detection) {
palmas_usb->id_otg_irq = regmap_irq_get_virq(palmas->irq_data,
PALMAS_ID_OTG_IRQ);
palmas_usb->id_irq = regmap_irq_get_virq(palmas->irq_data,
PALMAS_ID_IRQ);
status = devm_request_threaded_irq(palmas_usb->dev,
palmas_usb->id_irq,
NULL, palmas_id_irq_handler,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
IRQF_ONESHOT,
"palmas_usb_id", palmas_usb);
if (status < 0) {
dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
palmas_usb->id_irq, status);
return status;
}
} else if (palmas_usb->enable_gpio_id_detection) {
palmas_usb->gpio_id_irq = gpiod_to_irq(palmas_usb->id_gpiod);
if (palmas_usb->gpio_id_irq < 0) {
dev_err(&pdev->dev, "failed to get id irq\n");
return palmas_usb->gpio_id_irq;
}
status = devm_request_threaded_irq(&pdev->dev,
palmas_usb->gpio_id_irq,
NULL,
palmas_gpio_id_irq_handler,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
"palmas_usb_id",
palmas_usb);
if (status < 0) {
dev_err(&pdev->dev,
"failed to request handler for id irq\n");
return status;
}
}
if (palmas_usb->enable_vbus_detection) {
palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
PALMAS_VBUS_OTG_IRQ);
palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
PALMAS_VBUS_IRQ);
status = devm_request_threaded_irq(palmas_usb->dev,
palmas_usb->vbus_irq, NULL,
palmas_vbus_irq_handler,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
IRQF_ONESHOT,
"palmas_usb_vbus", palmas_usb);
if (status < 0) {
dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
palmas_usb->vbus_irq, status);
return status;
}
} else if (palmas_usb->enable_gpio_vbus_detection) {
/* remux GPIO_1 as VBUSDET */
status = palmas_update_bits(palmas,
PALMAS_PU_PD_OD_BASE,
PALMAS_PRIMARY_SECONDARY_PAD1,
PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK,
(1 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT));
if (status < 0) {
dev_err(&pdev->dev, "can't remux GPIO1\n");
return status;
}
palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
PALMAS_VBUS_OTG_IRQ);
palmas_usb->gpio_vbus_irq = gpiod_to_irq(palmas_usb->vbus_gpiod);
if (palmas_usb->gpio_vbus_irq < 0) {
dev_err(&pdev->dev, "failed to get vbus irq\n");
return palmas_usb->gpio_vbus_irq;
}
status = devm_request_threaded_irq(&pdev->dev,
palmas_usb->gpio_vbus_irq,
NULL,
palmas_vbus_irq_handler,
IRQF_TRIGGER_FALLING |
IRQF_TRIGGER_RISING |
IRQF_ONESHOT,
"palmas_usb_vbus",
palmas_usb);
if (status < 0) {
dev_err(&pdev->dev,
"failed to request handler for vbus irq\n");
return status;
}
}
palmas_enable_irq(palmas_usb);
/* perform initial detection */
if (palmas_usb->enable_gpio_vbus_detection)
palmas_vbus_irq_handler(palmas_usb->gpio_vbus_irq, palmas_usb);
palmas_gpio_id_detect(&palmas_usb->wq_detectid.work);
device_set_wakeup_capable(&pdev->dev, true);
return 0;
}
static int silead_ts_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct silead_ts_data *data;
struct device *dev = &client->dev;
int ret;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_I2C |
I2C_FUNC_SMBUS_READ_I2C_BLOCK |
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)) {
dev_err(dev, "I2C functionality check failed\n");
return -ENXIO;
}
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
i2c_set_clientdata(client, data);
data->client = client;
data->fw_name = SILEAD_FW_NAME;
data->x_max = SILEAD_X_MAX;
data->y_max = SILEAD_Y_MAX;
data->max_fingers = SILEAD_MAX_FINGERS;
data->pressure = SILEAD_PRESSURE;
/* If the IRQ is not filled by DT or ACPI subsytem
* try using the named GPIO */
if (client->irq <= 0) {
data->gpio_irq = devm_gpiod_get(dev, SILEAD_IRQ_GPIO_NAME);
if (IS_ERR(data->gpio_irq)) {
dev_err(dev, "IRQ GPIO request failed\n");
return -ENODEV;
}
ret = gpiod_direction_input(data->gpio_irq);
if (ret) {
dev_err(dev, "IRQ GPIO direction set failed\n");
return ret;
}
client->irq = gpiod_to_irq(data->gpio_irq);
if (client->irq <= 0) {
dev_err(dev, "GPIO to IRQ translation failed %d\n",
client->irq);
return client->irq;
}
}
/* Power GPIO pin */
if (client->dev.of_node) {
ret = of_get_named_gpio_flags(client->dev.of_node,
SILEAD_PWR_GPIO_NAME, 0, NULL);
if (ret <= 0) {
dev_err(&client->dev, "error getting gpio for %s\n",
SILEAD_PWR_GPIO_NAME);
return -ENODEV;
}
data->gpio_power = gpio_to_desc(ret);
if (!data->gpio_power)
return -ENODEV;
}
ret = gpiod_direction_output(data->gpio_power, 0);
if (ret) {
dev_err(dev, "Shutdown GPIO direction set failed\n");
return ret;
}
ret = silead_ts_setup(client);
if (ret)
return ret;
ret = silead_ts_request_input_dev(data);
if (ret)
return ret;
ret = devm_request_threaded_irq(dev, client->irq, NULL,
silead_ts_irq_handler,
IRQF_ONESHOT | IRQ_TYPE_EDGE_RISING,
client->name, data);
if (ret) {
dev_err(dev, "IRQ request failed %d\n", ret);
return ret;
}
dev_dbg(dev, "Probing succeded\n");
return 0;
}
