static int clps711x_gpio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
void __iomem *dat, *dir;
struct gpio_chip *gc;
struct resource *res;
int err, id;
if (!np)
return -ENODEV;
id = of_alias_get_id(np, "gpio");
if ((id < 0) || (id > 4))
return -ENODEV;
gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
if (!gc)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
dat = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(dat))
return PTR_ERR(dat);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
dir = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(dir))
return PTR_ERR(dir);
switch (id) {
case 3:
/* PORTD is inverted logic for direction register */
err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
NULL, dir, 0);
break;
default:
err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
dir, NULL, 0);
break;
}
if (err)
return err;
switch (id) {
case 4:
/* PORTE is 3 lines only */
gc->ngpio = 3;
break;
default:
break;
}
gc->base = -1;
gc->owner = THIS_MODULE;
platform_set_drvdata(pdev, gc);
return devm_gpiochip_add_data(&pdev->dev, gc, NULL);
}
static int bgpio_dev_probe(struct device_d *dev)
{
struct resource *r;
void __iomem *dat;
void __iomem *set;
void __iomem *clr;
void __iomem *dirout;
void __iomem *dirin;
unsigned int sz;
unsigned long flags = 0;
int err;
struct bgpio_chip *bgc;
struct bgpio_pdata *pdata = dev->platform_data;
r = dev_get_resource_by_name(dev, IORESOURCE_MEM, "dat");
if (IS_ERR(r))
return PTR_ERR(r);
sz = resource_size(r);
dat = bgpio_map(dev, "dat", sz, &err);
if (!dat)
return err ? err : -EINVAL;
set = bgpio_map(dev, "set", sz, &err);
if (err)
return err;
clr = bgpio_map(dev, "clr", sz, &err);
if (err)
return err;
dirout = bgpio_map(dev, "dirout", sz, &err);
if (err)
return err;
dirin = bgpio_map(dev, "dirin", sz, &err);
if (err)
return err;
dev_get_drvdata(dev, (const void **)&flags);
bgc = xzalloc(sizeof(struct bgpio_chip));
err = bgpio_init(bgc, dev, sz, dat, set, clr, dirout, dirin, flags);
if (err)
return err;
if (pdata) {
bgc->gc.base = pdata->base;
if (pdata->ngpio > 0)
bgc->gc.ngpio = pdata->ngpio;
}
dev->priv = bgc;
return gpiochip_add(&bgc->gc);
}
static int clps711x_gpio_probe(struct device_d *dev)
{
struct resource *iores;
int err, id = dev->id;
void __iomem *dat, *dir = NULL, *dir_inv = NULL;
struct bgpio_chip *bgc;
if (dev->device_node)
id = of_alias_get_id(dev->device_node, "gpio");
if (id < 0 || id > 4)
return -ENODEV;
iores = dev_request_mem_resource(dev, 0);
if (IS_ERR(iores))
return PTR_ERR(iores);
dat = IOMEM(iores->start);
switch (id) {
case 3:
iores = dev_request_mem_resource(dev, 1);
if (IS_ERR(iores))
return PTR_ERR(iores);
dir_inv = IOMEM(iores->start);
break;
default:
iores = dev_request_mem_resource(dev, 1);
if (IS_ERR(iores))
return PTR_ERR(iores);
dir = IOMEM(iores->start);
break;
}
bgc = xzalloc(sizeof(struct bgpio_chip));
err = bgpio_init(bgc, dev, 1, dat, NULL, NULL, dir, dir_inv, 0);
if (err)
goto out_err;
bgc->gc.base = id * 8;
switch (id) {
case 4:
bgc->gc.ngpio = 3;
break;
default:
break;
}
err = gpiochip_add(&bgc->gc);
out_err:
if (err)
free(bgc);
return err;
}
static int bgpio_pdev_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *r;
void __iomem *dat;
void __iomem *set;
void __iomem *clr;
void __iomem *dirout;
void __iomem *dirin;
unsigned long sz;
unsigned long flags = pdev->id_entry->driver_data;
int err;
struct bgpio_chip *bgc;
struct bgpio_pdata *pdata = dev_get_platdata(dev);
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dat");
if (!r)
return -EINVAL;
sz = resource_size(r);
dat = bgpio_map(pdev, "dat", sz);
if (IS_ERR(dat))
return PTR_ERR(dat);
set = bgpio_map(pdev, "set", sz);
if (IS_ERR(set))
return PTR_ERR(set);
clr = bgpio_map(pdev, "clr", sz);
if (IS_ERR(clr))
return PTR_ERR(clr);
dirout = bgpio_map(pdev, "dirout", sz);
if (IS_ERR(dirout))
return PTR_ERR(dirout);
dirin = bgpio_map(pdev, "dirin", sz);
if (IS_ERR(dirin))
return PTR_ERR(dirin);
bgc = devm_kzalloc(&pdev->dev, sizeof(*bgc), GFP_KERNEL);
if (!bgc)
return -ENOMEM;
err = bgpio_init(bgc, dev, sz, dat, set, clr, dirout, dirin, flags);
if (err)
return err;
if (pdata) {
if (pdata->label)
bgc->gc.label = pdata->label;
bgc->gc.base = pdata->base;
static int __init gef_gpio_probe(struct platform_device *pdev)
{
const struct of_device_id *of_id =
of_match_device(gef_gpio_ids, &pdev->dev);
struct gpio_chip *gc;
void __iomem *regs;
int ret;
gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
if (!gc)
return -ENOMEM;
regs = of_iomap(pdev->dev.of_node, 0);
if (!regs)
return -ENOMEM;
ret = bgpio_init(gc, &pdev->dev, 4, regs + GEF_GPIO_IN,
regs + GEF_GPIO_OUT, NULL, NULL,
regs + GEF_GPIO_DIRECT, BGPIOF_BIG_ENDIAN_BYTE_ORDER);
if (ret) {
dev_err(&pdev->dev, "bgpio_init failed\n");
goto err0;
}
/* Setup pointers to chip functions */
gc->label = devm_kstrdup(&pdev->dev, pdev->dev.of_node->full_name,
GFP_KERNEL);
if (!gc->label) {
ret = -ENOMEM;
goto err0;
}
gc->base = -1;
gc->ngpio = (u16)(uintptr_t)of_id->data;
gc->of_gpio_n_cells = 2;
gc->of_node = pdev->dev.of_node;
/* This function adds a memory mapped GPIO chip */
ret = devm_gpiochip_add_data(&pdev->dev, gc, NULL);
if (ret)
goto err0;
return 0;
err0:
iounmap(regs);
pr_err("%s: GPIO chip registration failed\n",
pdev->dev.of_node->full_name);
return ret;
};
static int moxart_gpio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
struct bgpio_chip *bgc;
void __iomem *base;
int ret;
bgc = devm_kzalloc(dev, sizeof(*bgc), GFP_KERNEL);
if (!bgc)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
ret = bgpio_init(bgc, dev, 4, base + GPIO_DATA_IN,
base + GPIO_DATA_OUT, NULL,
base + GPIO_PIN_DIRECTION, NULL,
BGPIOF_READ_OUTPUT_REG_SET);
if (ret) {
dev_err(&pdev->dev, "bgpio_init failed\n");
return ret;
}
bgc->gc.label = "moxart-gpio";
bgc->gc.request = moxart_gpio_request;
bgc->gc.free = moxart_gpio_free;
bgc->data = bgc->read_reg(bgc->reg_set);
bgc->gc.base = 0;
bgc->gc.ngpio = 32;
bgc->gc.dev = dev;
bgc->gc.owner = THIS_MODULE;
ret = gpiochip_add(&bgc->gc);
if (ret) {
dev_err(dev, "%s: gpiochip_add failed\n",
dev->of_node->full_name);
return ret;
}
return ret;
}
static int ep93xx_gpio_add_bank(struct bgpio_chip *bgc, struct device *dev,
void __iomem *mmio_base, struct ep93xx_gpio_bank *bank)
{
void __iomem *data = mmio_base + bank->data;
void __iomem *dir = mmio_base + bank->dir;
int err;
err = bgpio_init(bgc, dev, 1, data, NULL, NULL, dir, NULL, 0);
if (err)
return err;
bgc->gc.label = bank->label;
bgc->gc.base = bank->base;
if (bank->has_debounce) {
bgc->gc.set_debounce = ep93xx_gpio_set_debounce;
bgc->gc.to_irq = ep93xx_gpio_to_irq;
}
return gpiochip_add(&bgc->gc);
}
static int mlxbf_gpio_probe(struct platform_device *pdev)
{
struct mlxbf_gpio_state *gs;
struct device *dev = &pdev->dev;
struct gpio_chip *gc;
int ret;
gs = devm_kzalloc(&pdev->dev, sizeof(*gs), GFP_KERNEL);
if (!gs)
return -ENOMEM;
gs->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(gs->base))
return PTR_ERR(gs->base);
gc = &gs->gc;
ret = bgpio_init(gc, dev, 8,
gs->base + MLXBF_GPIO_PIN_STATE,
NULL,
NULL,
gs->base + MLXBF_GPIO_PIN_DIR_O,
gs->base + MLXBF_GPIO_PIN_DIR_I,
0);
if (ret)
return -ENODEV;
gc->owner = THIS_MODULE;
gc->ngpio = MLXBF_GPIO_NR;
ret = devm_gpiochip_add_data(dev, &gs->gc, gs);
if (ret) {
dev_err(&pdev->dev, "Failed adding memory mapped gpiochip\n");
return ret;
}
platform_set_drvdata(pdev, gs);
dev_info(&pdev->dev, "registered Mellanox BlueField GPIO");
return 0;
}
static int __devinit bgpio_pdev_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *r;
void __iomem *dat;
void __iomem *set;
void __iomem *clr;
void __iomem *dirout;
void __iomem *dirin;
unsigned long sz;
bool be;
int err;
struct bgpio_chip *bgc;
struct bgpio_pdata *pdata = dev_get_platdata(dev);
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dat");
if (!r)
return -EINVAL;
sz = resource_size(r);
dat = bgpio_map(pdev, "dat", sz, &err);
if (!dat)
return err ? err : -EINVAL;
set = bgpio_map(pdev, "set", sz, &err);
if (err)
return err;
clr = bgpio_map(pdev, "clr", sz, &err);
if (err)
return err;
dirout = bgpio_map(pdev, "dirout", sz, &err);
if (err)
return err;
dirin = bgpio_map(pdev, "dirin", sz, &err);
if (err)
return err;
be = !strcmp(platform_get_device_id(pdev)->name, "basic-mmio-gpio-be");
bgc = devm_kzalloc(&pdev->dev, sizeof(*bgc), GFP_KERNEL);
if (!bgc)
return -ENOMEM;
err = bgpio_init(bgc, dev, sz, dat, set, clr, dirout, dirin, be);
if (err)
return err;
if (pdata) {
bgc->gc.base = pdata->base;
if (pdata->ngpio > 0)
bgc->gc.ngpio = pdata->ngpio;
}
platform_set_drvdata(pdev, bgc);
return gpiochip_add(&bgc->gc);
}
static int pt_gpio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct acpi_device *acpi_dev;
acpi_handle handle = ACPI_HANDLE(dev);
struct pt_gpio_chip *pt_gpio;
struct resource *res_mem;
int ret = 0;
if (acpi_bus_get_device(handle, &acpi_dev)) {
dev_err(dev, "PT GPIO device node not found\n");
return -ENODEV;
}
pt_gpio = devm_kzalloc(dev, sizeof(struct pt_gpio_chip), GFP_KERNEL);
if (!pt_gpio)
return -ENOMEM;
res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res_mem) {
dev_err(&pdev->dev, "Failed to get MMIO resource for PT GPIO.\n");
return -EINVAL;
}
pt_gpio->reg_base = devm_ioremap_resource(dev, res_mem);
if (IS_ERR(pt_gpio->reg_base)) {
dev_err(&pdev->dev, "Failed to map MMIO resource for PT GPIO.\n");
return PTR_ERR(pt_gpio->reg_base);
}
ret = bgpio_init(&pt_gpio->gc, dev, 4,
pt_gpio->reg_base + PT_INPUTDATA_REG,
pt_gpio->reg_base + PT_OUTPUTDATA_REG, NULL,
pt_gpio->reg_base + PT_DIRECTION_REG, NULL,
BGPIOF_READ_OUTPUT_REG_SET);
if (ret) {
dev_err(&pdev->dev, "bgpio_init failed\n");
return ret;
}
pt_gpio->gc.owner = THIS_MODULE;
pt_gpio->gc.request = pt_gpio_request;
pt_gpio->gc.free = pt_gpio_free;
pt_gpio->gc.ngpio = PT_TOTAL_GPIO;
#if defined(CONFIG_OF_GPIO)
pt_gpio->gc.of_node = pdev->dev.of_node;
#endif
ret = gpiochip_add_data(&pt_gpio->gc, pt_gpio);
if (ret) {
dev_err(&pdev->dev, "Failed to register GPIO lib\n");
return ret;
}
platform_set_drvdata(pdev, pt_gpio);
/* initialize register setting */
writel(0, pt_gpio->reg_base + PT_SYNC_REG);
writel(0, pt_gpio->reg_base + PT_CLOCKRATE_REG);
dev_dbg(&pdev->dev, "PT GPIO driver loaded\n");
return ret;
}
static int xgene_gpio_sb_probe(struct platform_device *pdev)
{
struct xgene_gpio_sb *priv;
int ret;
struct resource *res;
void __iomem *regs;
struct irq_domain *parent_domain = NULL;
struct fwnode_handle *fwnode;
u32 val32;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(regs))
return PTR_ERR(regs);
priv->regs = regs;
ret = platform_get_irq(pdev, 0);
if (ret > 0) {
priv->parent_irq_base = irq_get_irq_data(ret)->hwirq;
parent_domain = irq_get_irq_data(ret)->domain;
}
if (!parent_domain) {
dev_err(&pdev->dev, "unable to obtain parent domain\n");
return -ENODEV;
}
ret = bgpio_init(&priv->gc, &pdev->dev, 4,
regs + MPA_GPIO_IN_ADDR,
regs + MPA_GPIO_OUT_ADDR, NULL,
regs + MPA_GPIO_OE_ADDR, NULL, 0);
if (ret)
return ret;
priv->gc.to_irq = xgene_gpio_sb_to_irq;
/* Retrieve start irq pin, use default if property not found */
priv->irq_start = XGENE_DFLT_IRQ_START_PIN;
if (!device_property_read_u32(&pdev->dev,
XGENE_IRQ_START_PROPERTY, &val32))
priv->irq_start = val32;
/* Retrieve number irqs, use default if property not found */
priv->nirq = XGENE_DFLT_MAX_NIRQ;
if (!device_property_read_u32(&pdev->dev, XGENE_NIRQ_PROPERTY, &val32))
priv->nirq = val32;
/* Retrieve number gpio, use default if property not found */
priv->gc.ngpio = XGENE_DFLT_MAX_NGPIO;
if (!device_property_read_u32(&pdev->dev, XGENE_NGPIO_PROPERTY, &val32))
priv->gc.ngpio = val32;
dev_info(&pdev->dev, "Support %d gpios, %d irqs start from pin %d\n",
priv->gc.ngpio, priv->nirq, priv->irq_start);
platform_set_drvdata(pdev, priv);
if (pdev->dev.of_node)
fwnode = of_node_to_fwnode(pdev->dev.of_node);
else
fwnode = pdev->dev.fwnode;
priv->irq_domain = irq_domain_create_hierarchy(parent_domain,
0, priv->nirq, fwnode,
&xgene_gpio_sb_domain_ops, priv);
if (!priv->irq_domain)
return -ENODEV;
priv->gc.irqdomain = priv->irq_domain;
ret = devm_gpiochip_add_data(&pdev->dev, &priv->gc, priv);
if (ret) {
dev_err(&pdev->dev,
"failed to register X-Gene GPIO Standby driver\n");
irq_domain_remove(priv->irq_domain);
return ret;
}
dev_info(&pdev->dev, "X-Gene GPIO Standby driver registered\n");
if (priv->nirq > 0) {
/* Register interrupt handlers for gpio signaled acpi events */
acpi_gpiochip_request_interrupts(&priv->gc);
}
return ret;
}
static int ftgpio_gpio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
struct ftgpio_gpio *g;
int irq;
int ret;
g = devm_kzalloc(dev, sizeof(*g), GFP_KERNEL);
if (!g)
return -ENOMEM;
g->dev = dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
g->base = devm_ioremap_resource(dev, res);
if (IS_ERR(g->base))
return PTR_ERR(g->base);
irq = platform_get_irq(pdev, 0);
if (irq <= 0)
return irq ? irq : -EINVAL;
ret = bgpio_init(&g->gc, dev, 4,
g->base + GPIO_DATA_IN,
g->base + GPIO_DATA_SET,
g->base + GPIO_DATA_CLR,
g->base + GPIO_DIR,
NULL,
0);
if (ret) {
dev_err(dev, "unable to init generic GPIO\n");
return ret;
}
g->gc.label = "FTGPIO010";
g->gc.base = -1;
g->gc.parent = dev;
g->gc.owner = THIS_MODULE;
/* ngpio is set by bgpio_init() */
ret = devm_gpiochip_add_data(dev, &g->gc, g);
if (ret)
return ret;
/* Disable, unmask and clear all interrupts */
writel(0x0, g->base + GPIO_INT_EN);
writel(0x0, g->base + GPIO_INT_MASK);
writel(~0x0, g->base + GPIO_INT_CLR);
ret = gpiochip_irqchip_add(&g->gc, &ftgpio_gpio_irqchip,
0, handle_bad_irq,
IRQ_TYPE_NONE);
if (ret) {
dev_info(dev, "could not add irqchip\n");
return ret;
}
gpiochip_set_chained_irqchip(&g->gc, &ftgpio_gpio_irqchip,
irq, ftgpio_gpio_irq_handler);
dev_info(dev, "FTGPIO010 @%p registered\n", g->base);
return 0;
}
static int bgpio_pdev_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *r;
void __iomem *dat;
void __iomem *set;
void __iomem *clr;
void __iomem *dirout;
void __iomem *dirin;
unsigned long sz;
unsigned long flags = 0;
int err;
struct gpio_chip *gc;
struct bgpio_pdata *pdata;
pdata = bgpio_parse_dt(pdev, &flags);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
if (!pdata) {
pdata = dev_get_platdata(dev);
flags = pdev->id_entry->driver_data;
}
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dat");
if (!r)
return -EINVAL;
sz = resource_size(r);
dat = bgpio_map(pdev, "dat", sz);
if (IS_ERR(dat))
return PTR_ERR(dat);
set = bgpio_map(pdev, "set", sz);
if (IS_ERR(set))
return PTR_ERR(set);
clr = bgpio_map(pdev, "clr", sz);
if (IS_ERR(clr))
return PTR_ERR(clr);
dirout = bgpio_map(pdev, "dirout", sz);
if (IS_ERR(dirout))
return PTR_ERR(dirout);
dirin = bgpio_map(pdev, "dirin", sz);
if (IS_ERR(dirin))
return PTR_ERR(dirin);
gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
if (!gc)
return -ENOMEM;
err = bgpio_init(gc, dev, sz, dat, set, clr, dirout, dirin, flags);
if (err)
return err;
if (pdata) {
if (pdata->label)
gc->label = pdata->label;
gc->base = pdata->base;
if (pdata->ngpio > 0)
gc->ngpio = pdata->ngpio;
}
platform_set_drvdata(pdev, gc);
return devm_gpiochip_add_data(&pdev->dev, gc, NULL);
}