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Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/Kconfig2
-rw-r--r--drivers/gpio/gpio-langwell.c17
-rw-r--r--drivers/gpio/gpio-ml-ioh.c3
-rw-r--r--drivers/gpio/gpio-mvebu.c5
-rw-r--r--drivers/gpio/gpio-mxs.c3
-rw-r--r--drivers/gpio/gpio-omap.c48
-rw-r--r--drivers/gpio/gpio-pch.c3
-rw-r--r--drivers/gpio/gpio-rcar.c94
-rw-r--r--drivers/gpio/gpio-samsung.c67
-rw-r--r--drivers/gpio/gpio-sch.c6
-rw-r--r--drivers/gpio/gpio-tegra.c5
-rw-r--r--drivers/gpio/gpio-viperboard.c3
12 files changed, 146 insertions, 110 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 87d567089f1..573c449c49b 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -636,7 +636,7 @@ config GPIO_MAX7301
config GPIO_MCP23S08
tristate "Microchip MCP23xxx I/O expander"
- depends on SPI_MASTER || I2C
+ depends on (SPI_MASTER && !I2C) || I2C
help
SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
I/O expanders.
diff --git a/drivers/gpio/gpio-langwell.c b/drivers/gpio/gpio-langwell.c
index 634c3d37f7b..62ef10a641c 100644
--- a/drivers/gpio/gpio-langwell.c
+++ b/drivers/gpio/gpio-langwell.c
@@ -324,6 +324,7 @@ static int lnw_gpio_probe(struct pci_dev *pdev,
resource_size_t start, len;
struct lnw_gpio *lnw;
u32 gpio_base;
+ u32 irq_base;
int retval;
int ngpio = id->driver_data;
@@ -345,6 +346,7 @@ static int lnw_gpio_probe(struct pci_dev *pdev,
retval = -EFAULT;
goto err_ioremap;
}
+ irq_base = *(u32 *)base;
gpio_base = *((u32 *)base + 1);
/* release the IO mapping, since we already get the info from bar1 */
iounmap(base);
@@ -365,13 +367,6 @@ static int lnw_gpio_probe(struct pci_dev *pdev,
goto err_ioremap;
}
- lnw->domain = irq_domain_add_linear(pdev->dev.of_node, ngpio,
- &lnw_gpio_irq_ops, lnw);
- if (!lnw->domain) {
- retval = -ENOMEM;
- goto err_ioremap;
- }
-
lnw->reg_base = base;
lnw->chip.label = dev_name(&pdev->dev);
lnw->chip.request = lnw_gpio_request;
@@ -384,6 +379,14 @@ static int lnw_gpio_probe(struct pci_dev *pdev,
lnw->chip.ngpio = ngpio;
lnw->chip.can_sleep = 0;
lnw->pdev = pdev;
+
+ lnw->domain = irq_domain_add_simple(pdev->dev.of_node, ngpio, irq_base,
+ &lnw_gpio_irq_ops, lnw);
+ if (!lnw->domain) {
+ retval = -ENOMEM;
+ goto err_ioremap;
+ }
+
pci_set_drvdata(pdev, lnw);
retval = gpiochip_add(&lnw->chip);
if (retval) {
diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c
index b73366523fa..0966f2637ad 100644
--- a/drivers/gpio/gpio-ml-ioh.c
+++ b/drivers/gpio/gpio-ml-ioh.c
@@ -496,8 +496,7 @@ err_irq_alloc_descs:
err_gpiochip_add:
while (--i >= 0) {
chip--;
- ret = gpiochip_remove(&chip->gpio);
- if (ret)
+ if (gpiochip_remove(&chip->gpio))
dev_err(&pdev->dev, "Failed gpiochip_remove(%d)\n", i);
}
kfree(chip_save);
diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c
index bf69a7eff37..3a4816adc13 100644
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -619,11 +619,6 @@ static int mvebu_gpio_probe(struct platform_device *pdev)
* per-CPU registers */
if (soc_variant == MVEBU_GPIO_SOC_VARIANT_ARMADAXP) {
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- if (!res) {
- dev_err(&pdev->dev, "Cannot get memory resource\n");
- return -ENODEV;
- }
-
mvchip->percpu_membase = devm_ioremap_resource(&pdev->dev,
res);
if (IS_ERR(mvchip->percpu_membase))
diff --git a/drivers/gpio/gpio-mxs.c b/drivers/gpio/gpio-mxs.c
index 25000b0f845..f8e6af20dfb 100644
--- a/drivers/gpio/gpio-mxs.c
+++ b/drivers/gpio/gpio-mxs.c
@@ -326,7 +326,8 @@ static int mxs_gpio_probe(struct platform_device *pdev)
err = bgpio_init(&port->bgc, &pdev->dev, 4,
port->base + PINCTRL_DIN(port),
- port->base + PINCTRL_DOUT(port), NULL,
+ port->base + PINCTRL_DOUT(port) + MXS_SET,
+ port->base + PINCTRL_DOUT(port) + MXS_CLR,
port->base + PINCTRL_DOE(port), NULL, 0);
if (err)
goto out_irqdesc_free;
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 2050891d9c6..d3f7d2db870 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -69,6 +69,7 @@ struct gpio_bank {
bool is_mpuio;
bool dbck_flag;
bool loses_context;
+ bool context_valid;
int stride;
u32 width;
int context_loss_count;
@@ -1128,6 +1129,10 @@ static int omap_gpio_probe(struct platform_device *pdev)
bank->loses_context = true;
} else {
bank->loses_context = pdata->loses_context;
+
+ if (bank->loses_context)
+ bank->get_context_loss_count =
+ pdata->get_context_loss_count;
}
@@ -1178,9 +1183,6 @@ static int omap_gpio_probe(struct platform_device *pdev)
omap_gpio_chip_init(bank);
omap_gpio_show_rev(bank);
- if (bank->loses_context)
- bank->get_context_loss_count = pdata->get_context_loss_count;
-
pm_runtime_put(bank->dev);
list_add_tail(&bank->node, &omap_gpio_list);
@@ -1259,6 +1261,8 @@ update_gpio_context_count:
return 0;
}
+static void omap_gpio_init_context(struct gpio_bank *p);
+
static int omap_gpio_runtime_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
@@ -1268,6 +1272,20 @@ static int omap_gpio_runtime_resume(struct device *dev)
int c;
spin_lock_irqsave(&bank->lock, flags);
+
+ /*
+ * On the first resume during the probe, the context has not
+ * been initialised and so initialise it now. Also initialise
+ * the context loss count.
+ */
+ if (bank->loses_context && !bank->context_valid) {
+ omap_gpio_init_context(bank);
+
+ if (bank->get_context_loss_count)
+ bank->context_loss_count =
+ bank->get_context_loss_count(bank->dev);
+ }
+
_gpio_dbck_enable(bank);
/*
@@ -1384,6 +1402,29 @@ void omap2_gpio_resume_after_idle(void)
}
#if defined(CONFIG_PM_RUNTIME)
+static void omap_gpio_init_context(struct gpio_bank *p)
+{
+ struct omap_gpio_reg_offs *regs = p->regs;
+ void __iomem *base = p->base;
+
+ p->context.ctrl = __raw_readl(base + regs->ctrl);
+ p->context.oe = __raw_readl(base + regs->direction);
+ p->context.wake_en = __raw_readl(base + regs->wkup_en);
+ p->context.leveldetect0 = __raw_readl(base + regs->leveldetect0);
+ p->context.leveldetect1 = __raw_readl(base + regs->leveldetect1);
+ p->context.risingdetect = __raw_readl(base + regs->risingdetect);
+ p->context.fallingdetect = __raw_readl(base + regs->fallingdetect);
+ p->context.irqenable1 = __raw_readl(base + regs->irqenable);
+ p->context.irqenable2 = __raw_readl(base + regs->irqenable2);
+
+ if (regs->set_dataout && p->regs->clr_dataout)
+ p->context.dataout = __raw_readl(base + regs->set_dataout);
+ else
+ p->context.dataout = __raw_readl(base + regs->dataout);
+
+ p->context_valid = true;
+}
+
static void omap_gpio_restore_context(struct gpio_bank *bank)
{
__raw_writel(bank->context.wake_en,
@@ -1421,6 +1462,7 @@ static void omap_gpio_restore_context(struct gpio_bank *bank)
#else
#define omap_gpio_runtime_suspend NULL
#define omap_gpio_runtime_resume NULL
+static void omap_gpio_init_context(struct gpio_bank *p) {}
#endif
static const struct dev_pm_ops gpio_pm_ops = {
diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c
index cdf599687cf..0fec097e838 100644
--- a/drivers/gpio/gpio-pch.c
+++ b/drivers/gpio/gpio-pch.c
@@ -424,8 +424,7 @@ end:
err_request_irq:
irq_free_descs(irq_base, gpio_pins[chip->ioh]);
- ret = gpiochip_remove(&chip->gpio);
- if (ret)
+ if (gpiochip_remove(&chip->gpio))
dev_err(&pdev->dev, "%s gpiochip_remove failed\n", __func__);
err_gpiochip_add:
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index b4ca450947b..5a693dd0ac7 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -49,6 +49,9 @@ struct gpio_rcar_priv {
#define POSNEG 0x20
#define EDGLEVEL 0x24
#define FILONOFF 0x28
+#define BOTHEDGE 0x4c
+
+#define RCAR_MAX_GPIO_PER_BANK 32
static inline u32 gpio_rcar_read(struct gpio_rcar_priv *p, int offs)
{
@@ -91,7 +94,8 @@ static void gpio_rcar_irq_enable(struct irq_data *d)
static void gpio_rcar_config_interrupt_input_mode(struct gpio_rcar_priv *p,
unsigned int hwirq,
bool active_high_rising_edge,
- bool level_trigger)
+ bool level_trigger,
+ bool both)
{
unsigned long flags;
@@ -108,6 +112,10 @@ static void gpio_rcar_config_interrupt_input_mode(struct gpio_rcar_priv *p,
/* Configure edge or level trigger in EDGLEVEL */
gpio_rcar_modify_bit(p, EDGLEVEL, hwirq, !level_trigger);
+ /* Select one edge or both edges in BOTHEDGE */
+ if (p->config.has_both_edge_trigger)
+ gpio_rcar_modify_bit(p, BOTHEDGE, hwirq, both);
+
/* Select "Interrupt Input Mode" in IOINTSEL */
gpio_rcar_modify_bit(p, IOINTSEL, hwirq, true);
@@ -127,16 +135,26 @@ static int gpio_rcar_irq_set_type(struct irq_data *d, unsigned int type)
switch (type & IRQ_TYPE_SENSE_MASK) {
case IRQ_TYPE_LEVEL_HIGH:
- gpio_rcar_config_interrupt_input_mode(p, hwirq, true, true);
+ gpio_rcar_config_interrupt_input_mode(p, hwirq, true, true,
+ false);
break;
case IRQ_TYPE_LEVEL_LOW:
- gpio_rcar_config_interrupt_input_mode(p, hwirq, false, true);
+ gpio_rcar_config_interrupt_input_mode(p, hwirq, false, true,
+ false);
break;
case IRQ_TYPE_EDGE_RISING:
- gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false);
+ gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false,
+ false);
break;
case IRQ_TYPE_EDGE_FALLING:
- gpio_rcar_config_interrupt_input_mode(p, hwirq, false, false);
+ gpio_rcar_config_interrupt_input_mode(p, hwirq, false, false,
+ false);
+ break;
+ case IRQ_TYPE_EDGE_BOTH:
+ if (!p->config.has_both_edge_trigger)
+ return -EINVAL;
+ gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false,
+ true);
break;
default:
return -EINVAL;
@@ -258,9 +276,39 @@ static struct irq_domain_ops gpio_rcar_irq_domain_ops = {
.map = gpio_rcar_irq_domain_map,
};
+static void gpio_rcar_parse_pdata(struct gpio_rcar_priv *p)
+{
+ struct gpio_rcar_config *pdata = p->pdev->dev.platform_data;
+#ifdef CONFIG_OF
+ struct device_node *np = p->pdev->dev.of_node;
+ struct of_phandle_args args;
+ int ret;
+#endif
+
+ if (pdata)
+ p->config = *pdata;
+#ifdef CONFIG_OF
+ else if (np) {
+ ret = of_parse_phandle_with_args(np, "gpio-ranges",
+ "#gpio-range-cells", 0, &args);
+ p->config.number_of_pins = ret == 0 && args.args_count == 3
+ ? args.args[2]
+ : RCAR_MAX_GPIO_PER_BANK;
+ p->config.gpio_base = -1;
+ }
+#endif
+
+ if (p->config.number_of_pins == 0 ||
+ p->config.number_of_pins > RCAR_MAX_GPIO_PER_BANK) {
+ dev_warn(&p->pdev->dev,
+ "Invalid number of gpio lines %u, using %u\n",
+ p->config.number_of_pins, RCAR_MAX_GPIO_PER_BANK);
+ p->config.number_of_pins = RCAR_MAX_GPIO_PER_BANK;
+ }
+}
+
static int gpio_rcar_probe(struct platform_device *pdev)
{
- struct gpio_rcar_config *pdata = pdev->dev.platform_data;
struct gpio_rcar_priv *p;
struct resource *io, *irq;
struct gpio_chip *gpio_chip;
@@ -275,14 +323,14 @@ static int gpio_rcar_probe(struct platform_device *pdev)
goto err0;
}
- /* deal with driver instance configuration */
- if (pdata)
- p->config = *pdata;
-
p->pdev = pdev;
- platform_set_drvdata(pdev, p);
spin_lock_init(&p->lock);
+ /* Get device configuration from DT node or platform data. */
+ gpio_rcar_parse_pdata(p);
+
+ platform_set_drvdata(pdev, p);
+
io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
@@ -309,6 +357,7 @@ static int gpio_rcar_probe(struct platform_device *pdev)
gpio_chip->set = gpio_rcar_set;
gpio_chip->to_irq = gpio_rcar_to_irq;
gpio_chip->label = name;
+ gpio_chip->dev = &pdev->dev;
gpio_chip->owner = THIS_MODULE;
gpio_chip->base = p->config.gpio_base;
gpio_chip->ngpio = p->config.number_of_pins;
@@ -333,7 +382,7 @@ static int gpio_rcar_probe(struct platform_device *pdev)
}
if (devm_request_irq(&pdev->dev, irq->start,
- gpio_rcar_irq_handler, 0, name, p)) {
+ gpio_rcar_irq_handler, IRQF_SHARED, name, p)) {
dev_err(&pdev->dev, "failed to request IRQ\n");
ret = -ENOENT;
goto err1;
@@ -355,10 +404,12 @@ static int gpio_rcar_probe(struct platform_device *pdev)
p->config.irq_base, ret);
}
- ret = gpiochip_add_pin_range(gpio_chip, p->config.pctl_name, 0,
- gpio_chip->base, gpio_chip->ngpio);
- if (ret < 0)
- dev_warn(&pdev->dev, "failed to add pin range\n");
+ if (p->config.pctl_name) {
+ ret = gpiochip_add_pin_range(gpio_chip, p->config.pctl_name, 0,
+ gpio_chip->base, gpio_chip->ngpio);
+ if (ret < 0)
+ dev_warn(&pdev->dev, "failed to add pin range\n");
+ }
return 0;
@@ -381,11 +432,22 @@ static int gpio_rcar_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_OF
+static const struct of_device_id gpio_rcar_of_table[] = {
+ {
+ .compatible = "renesas,gpio-rcar",
+ },
+};
+
+MODULE_DEVICE_TABLE(of, gpio_rcar_of_table);
+#endif
+
static struct platform_driver gpio_rcar_device_driver = {
.probe = gpio_rcar_probe,
.remove = gpio_rcar_remove,
.driver = {
.name = "gpio_rcar",
+ .of_match_table = of_match_ptr(gpio_rcar_of_table),
}
};
diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
index b22ca793374..a1392f47bbd 100644
--- a/drivers/gpio/gpio-samsung.c
+++ b/drivers/gpio/gpio-samsung.c
@@ -933,67 +933,6 @@ static void __init samsung_gpiolib_add(struct samsung_gpio_chip *chip)
s3c_gpiolib_track(chip);
}
-#if defined(CONFIG_PLAT_S3C24XX) && defined(CONFIG_OF)
-static int s3c24xx_gpio_xlate(struct gpio_chip *gc,
- const struct of_phandle_args *gpiospec, u32 *flags)
-{
- unsigned int pin;
-
- if (WARN_ON(gc->of_gpio_n_cells < 3))
- return -EINVAL;
-
- if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells))
- return -EINVAL;
-
- if (gpiospec->args[0] > gc->ngpio)
- return -EINVAL;
-
- pin = gc->base + gpiospec->args[0];
-
- if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1])))
- pr_warn("gpio_xlate: failed to set pin function\n");
- if (s3c_gpio_setpull(pin, gpiospec->args[2] & 0xffff))
- pr_warn("gpio_xlate: failed to set pin pull up/down\n");
-
- if (flags)
- *flags = gpiospec->args[2] >> 16;
-
- return gpiospec->args[0];
-}
-
-static const struct of_device_id s3c24xx_gpio_dt_match[] __initdata = {
- { .compatible = "samsung,s3c24xx-gpio", },
- {}
-};
-
-static __init void s3c24xx_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
- u64 base, u64 offset)
-{
- struct gpio_chip *gc = &chip->chip;
- u64 address;
-
- if (!of_have_populated_dt())
- return;
-
- address = chip->base ? base + ((u32)chip->base & 0xfff) : base + offset;
- gc->of_node = of_find_matching_node_by_address(NULL,
- s3c24xx_gpio_dt_match, address);
- if (!gc->of_node) {
- pr_info("gpio: device tree node not found for gpio controller"
- " with base address %08llx\n", address);
- return;
- }
- gc->of_gpio_n_cells = 3;
- gc->of_xlate = s3c24xx_gpio_xlate;
-}
-#else
-static __init void s3c24xx_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
- u64 base, u64 offset)
-{
- return;
-}
-#endif /* defined(CONFIG_PLAT_S3C24XX) && defined(CONFIG_OF) */
-
static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip,
int nr_chips, void __iomem *base)
{
@@ -1018,8 +957,6 @@ static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip,
gc->direction_output = samsung_gpiolib_2bit_output;
samsung_gpiolib_add(chip);
-
- s3c24xx_gpiolib_attach_ofnode(chip, S3C24XX_PA_GPIO, i * 0x10);
}
}
@@ -3026,6 +2963,10 @@ static __init int samsung_gpiolib_init(void)
*/
struct device_node *pctrl_np;
static const struct of_device_id exynos_pinctrl_ids[] = {
+ { .compatible = "samsung,s3c2412-pinctrl", },
+ { .compatible = "samsung,s3c2416-pinctrl", },
+ { .compatible = "samsung,s3c2440-pinctrl", },
+ { .compatible = "samsung,s3c2450-pinctrl", },
{ .compatible = "samsung,exynos4210-pinctrl", },
{ .compatible = "samsung,exynos4x12-pinctrl", },
{ .compatible = "samsung,exynos5250-pinctrl", },
diff --git a/drivers/gpio/gpio-sch.c b/drivers/gpio/gpio-sch.c
index 1e4de16ceb4..5af65719b95 100644
--- a/drivers/gpio/gpio-sch.c
+++ b/drivers/gpio/gpio-sch.c
@@ -272,10 +272,8 @@ static int sch_gpio_probe(struct platform_device *pdev)
return 0;
err_sch_gpio_resume:
- err = gpiochip_remove(&sch_gpio_core);
- if (err)
- dev_err(&pdev->dev, "%s failed, %d\n",
- "gpiochip_remove()", err);
+ if (gpiochip_remove(&sch_gpio_core))
+ dev_err(&pdev->dev, "%s gpiochip_remove failed\n", __func__);
err_sch_gpio_core:
release_region(res->start, resource_size(res));
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index da4cb5b0cb8..9a62672f1be 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -463,11 +463,6 @@ static int tegra_gpio_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "Missing MEM resource\n");
- return -ENODEV;
- }
-
regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(regs))
return PTR_ERR(regs);
diff --git a/drivers/gpio/gpio-viperboard.c b/drivers/gpio/gpio-viperboard.c
index 095ab14cea4..5ac2919197f 100644
--- a/drivers/gpio/gpio-viperboard.c
+++ b/drivers/gpio/gpio-viperboard.c
@@ -446,7 +446,8 @@ static int vprbrd_gpio_probe(struct platform_device *pdev)
return ret;
err_gpiob:
- ret = gpiochip_remove(&vb_gpio->gpioa);
+ if (gpiochip_remove(&vb_gpio->gpioa))
+ dev_err(&pdev->dev, "%s gpiochip_remove failed\n", __func__);
err_gpioa:
return ret;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-31 07:07:38 +0000