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-rw-r--r--drivers/gpio/gpio-74x164.c1
-rw-r--r--drivers/gpio/gpio-74xx-mmio.c7
-rw-r--r--drivers/gpio/gpio-max7301.c1
-rw-r--r--drivers/gpio/gpio-mc33880.c1
-rw-r--r--drivers/gpio/gpio-mcp23s08.c2
-rw-r--r--drivers/gpio/gpio-mxc.c2
-rw-r--r--drivers/gpio/gpio-omap.c2
-rw-r--r--drivers/gpio/gpio-palmas.c2
-rw-r--r--drivers/gpio/gpio-syscon.c6
-rw-r--r--drivers/gpio/gpio-tegra.c105
-rw-r--r--drivers/gpio/gpiolib-acpi.c153
-rw-r--r--drivers/gpio/gpiolib.c5
-rw-r--r--drivers/gpio/gpiolib.h10
13 files changed, 189 insertions, 108 deletions
diff --git a/drivers/gpio/gpio-74x164.c b/drivers/gpio/gpio-74x164.c
index e3d968f751f1..60172f835d15 100644
--- a/drivers/gpio/gpio-74x164.c
+++ b/drivers/gpio/gpio-74x164.c
@@ -183,7 +183,6 @@ MODULE_DEVICE_TABLE(of, gen_74x164_dt_ids);
static struct spi_driver gen_74x164_driver = {
.driver = {
.name = "74x164",
- .owner = THIS_MODULE,
.of_match_table = gen_74x164_dt_ids,
},
.probe = gen_74x164_probe,
diff --git a/drivers/gpio/gpio-74xx-mmio.c b/drivers/gpio/gpio-74xx-mmio.c
index 6ed7c0fb3378..6b186829087c 100644
--- a/drivers/gpio/gpio-74xx-mmio.c
+++ b/drivers/gpio/gpio-74xx-mmio.c
@@ -113,13 +113,16 @@ static int mmio_74xx_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
static int mmio_74xx_gpio_probe(struct platform_device *pdev)
{
- const struct of_device_id *of_id =
- of_match_device(mmio_74xx_gpio_ids, &pdev->dev);
+ const struct of_device_id *of_id;
struct mmio_74xx_gpio_priv *priv;
struct resource *res;
void __iomem *dat;
int err;
+ of_id = of_match_device(mmio_74xx_gpio_ids, &pdev->dev);
+ if (!of_id)
+ return -ENODEV;
+
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
diff --git a/drivers/gpio/gpio-max7301.c b/drivers/gpio/gpio-max7301.c
index 6e1c984a75d4..05813fbf3daf 100644
--- a/drivers/gpio/gpio-max7301.c
+++ b/drivers/gpio/gpio-max7301.c
@@ -87,7 +87,6 @@ MODULE_DEVICE_TABLE(spi, max7301_id);
static struct spi_driver max7301_driver = {
.driver = {
.name = "max7301",
- .owner = THIS_MODULE,
},
.probe = max7301_probe,
.remove = max7301_remove,
diff --git a/drivers/gpio/gpio-mc33880.c b/drivers/gpio/gpio-mc33880.c
index a431604c9e67..2853731db5bc 100644
--- a/drivers/gpio/gpio-mc33880.c
+++ b/drivers/gpio/gpio-mc33880.c
@@ -163,7 +163,6 @@ static int mc33880_remove(struct spi_device *spi)
static struct spi_driver mc33880_driver = {
.driver = {
.name = DRIVER_NAME,
- .owner = THIS_MODULE,
},
.probe = mc33880_probe,
.remove = mc33880_remove,
diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c
index 73db7ecd7ffd..4a41694919da 100644
--- a/drivers/gpio/gpio-mcp23s08.c
+++ b/drivers/gpio/gpio-mcp23s08.c
@@ -848,7 +848,6 @@ MODULE_DEVICE_TABLE(i2c, mcp230xx_id);
static struct i2c_driver mcp230xx_driver = {
.driver = {
.name = "mcp230xx",
- .owner = THIS_MODULE,
.of_match_table = of_match_ptr(mcp23s08_i2c_of_match),
},
.probe = mcp230xx_probe,
@@ -1021,7 +1020,6 @@ static struct spi_driver mcp23s08_driver = {
.id_table = mcp23s08_ids,
.driver = {
.name = "mcp23s08",
- .owner = THIS_MODULE,
.of_match_table = of_match_ptr(mcp23s08_spi_of_match),
},
};
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index b8dd847443c5..6ea8df6c7397 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -33,7 +33,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/module.h>
-#include <asm-generic/bug.h>
+#include <linux/bug.h>
enum mxc_gpio_hwtype {
IMX1_GPIO, /* runs on i.mx1 */
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 56d2d026e62e..f7fbb46d5d79 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -1122,8 +1122,6 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
/* MPUIO is a bit different, reading IRQ status clears it */
if (bank->is_mpuio) {
irqc->irq_ack = dummy_irq_chip.irq_ack;
- irqc->irq_mask = irq_gc_mask_set_bit;
- irqc->irq_unmask = irq_gc_mask_clr_bit;
if (!bank->regs->wkup_en)
irqc->irq_set_wake = NULL;
}
diff --git a/drivers/gpio/gpio-palmas.c b/drivers/gpio/gpio-palmas.c
index 171a6389f9ce..52b447c071cb 100644
--- a/drivers/gpio/gpio-palmas.c
+++ b/drivers/gpio/gpio-palmas.c
@@ -167,6 +167,8 @@ static int palmas_gpio_probe(struct platform_device *pdev)
const struct palmas_device_data *dev_data;
match = of_match_device(of_palmas_gpio_match, &pdev->dev);
+ if (!match)
+ return -ENODEV;
dev_data = match->data;
if (!dev_data)
dev_data = &palmas_dev_data;
diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c
index 045a952576c7..7b25fdf64802 100644
--- a/drivers/gpio/gpio-syscon.c
+++ b/drivers/gpio/gpio-syscon.c
@@ -187,11 +187,15 @@ MODULE_DEVICE_TABLE(of, syscon_gpio_ids);
static int syscon_gpio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- const struct of_device_id *of_id = of_match_device(syscon_gpio_ids, dev);
+ const struct of_device_id *of_id;
struct syscon_gpio_priv *priv;
struct device_node *np = dev->of_node;
int ret;
+ of_id = of_match_device(syscon_gpio_ids, dev);
+ if (!of_id)
+ return -ENODEV;
+
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 027e5f47dd28..896bf29776b0 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -375,6 +375,60 @@ static int tegra_gpio_irq_set_wake(struct irq_data *d, unsigned int enable)
}
#endif
+#ifdef CONFIG_DEBUG_FS
+
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+static int dbg_gpio_show(struct seq_file *s, void *unused)
+{
+ int i;
+ int j;
+
+ for (i = 0; i < tegra_gpio_bank_count; i++) {
+ for (j = 0; j < 4; j++) {
+ int gpio = tegra_gpio_compose(i, j, 0);
+ seq_printf(s,
+ "%d:%d %02x %02x %02x %02x %02x %02x %06x\n",
+ i, j,
+ tegra_gpio_readl(GPIO_CNF(gpio)),
+ tegra_gpio_readl(GPIO_OE(gpio)),
+ tegra_gpio_readl(GPIO_OUT(gpio)),
+ tegra_gpio_readl(GPIO_IN(gpio)),
+ tegra_gpio_readl(GPIO_INT_STA(gpio)),
+ tegra_gpio_readl(GPIO_INT_ENB(gpio)),
+ tegra_gpio_readl(GPIO_INT_LVL(gpio)));
+ }
+ }
+ return 0;
+}
+
+static int dbg_gpio_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, dbg_gpio_show, &inode->i_private);
+}
+
+static const struct file_operations debug_fops = {
+ .open = dbg_gpio_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void tegra_gpio_debuginit(void)
+{
+ (void) debugfs_create_file("tegra_gpio", S_IRUGO,
+ NULL, NULL, &debug_fops);
+}
+
+#else
+
+static inline void tegra_gpio_debuginit(void)
+{
+}
+
+#endif
+
static struct irq_chip tegra_gpio_irq_chip = {
.name = "GPIO",
.irq_ack = tegra_gpio_irq_ack,
@@ -519,6 +573,8 @@ static int tegra_gpio_probe(struct platform_device *pdev)
spin_lock_init(&bank->lvl_lock[j]);
}
+ tegra_gpio_debuginit();
+
return 0;
}
@@ -536,52 +592,3 @@ static int __init tegra_gpio_init(void)
return platform_driver_register(&tegra_gpio_driver);
}
postcore_initcall(tegra_gpio_init);
-
-#ifdef CONFIG_DEBUG_FS
-
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-
-static int dbg_gpio_show(struct seq_file *s, void *unused)
-{
- int i;
- int j;
-
- for (i = 0; i < tegra_gpio_bank_count; i++) {
- for (j = 0; j < 4; j++) {
- int gpio = tegra_gpio_compose(i, j, 0);
- seq_printf(s,
- "%d:%d %02x %02x %02x %02x %02x %02x %06x\n",
- i, j,
- tegra_gpio_readl(GPIO_CNF(gpio)),
- tegra_gpio_readl(GPIO_OE(gpio)),
- tegra_gpio_readl(GPIO_OUT(gpio)),
- tegra_gpio_readl(GPIO_IN(gpio)),
- tegra_gpio_readl(GPIO_INT_STA(gpio)),
- tegra_gpio_readl(GPIO_INT_ENB(gpio)),
- tegra_gpio_readl(GPIO_INT_LVL(gpio)));
- }
- }
- return 0;
-}
-
-static int dbg_gpio_open(struct inode *inode, struct file *file)
-{
- return single_open(file, dbg_gpio_show, &inode->i_private);
-}
-
-static const struct file_operations debug_fops = {
- .open = dbg_gpio_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int __init tegra_gpio_debuginit(void)
-{
- (void) debugfs_create_file("tegra_gpio", S_IRUGO,
- NULL, NULL, &debug_fops);
- return 0;
-}
-late_initcall(tegra_gpio_debuginit);
-#endif
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index bbcac3af2a7a..16a7b6816744 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -388,6 +388,8 @@ struct acpi_gpio_lookup {
struct acpi_gpio_info info;
int index;
int pin_index;
+ bool active_low;
+ struct acpi_device *adev;
struct gpio_desc *desc;
int n;
};
@@ -424,6 +426,65 @@ static int acpi_find_gpio(struct acpi_resource *ares, void *data)
return 1;
}
+static int acpi_gpio_resource_lookup(struct acpi_gpio_lookup *lookup,
+ struct acpi_gpio_info *info)
+{
+ struct list_head res_list;
+ int ret;
+
+ INIT_LIST_HEAD(&res_list);
+
+ ret = acpi_dev_get_resources(lookup->adev, &res_list, acpi_find_gpio,
+ lookup);
+ if (ret < 0)
+ return ret;
+
+ acpi_dev_free_resource_list(&res_list);
+
+ if (!lookup->desc)
+ return -ENOENT;
+
+ if (info) {
+ *info = lookup->info;
+ if (lookup->active_low)
+ info->active_low = lookup->active_low;
+ }
+ return 0;
+}
+
+static int acpi_gpio_property_lookup(struct fwnode_handle *fwnode,
+ const char *propname, int index,
+ struct acpi_gpio_lookup *lookup)
+{
+ struct acpi_reference_args args;
+ int ret;
+
+ memset(&args, 0, sizeof(args));
+ ret = acpi_node_get_property_reference(fwnode, propname, index, &args);
+ if (ret) {
+ struct acpi_device *adev = to_acpi_device_node(fwnode);
+
+ if (!adev)
+ return ret;
+
+ if (!acpi_get_driver_gpio_data(adev, propname, index, &args))
+ return ret;
+ }
+ /*
+ * The property was found and resolved, so need to lookup the GPIO based
+ * on returned args.
+ */
+ lookup->adev = args.adev;
+ if (args.nargs >= 2) {
+ lookup->index = args.args[0];
+ lookup->pin_index = args.args[1];
+ /* 3rd argument, if present is used to specify active_low. */
+ if (args.nargs >= 3)
+ lookup->active_low = !!args.args[2];
+ }
+ return 0;
+}
+
/**
* acpi_get_gpiod_by_index() - get a GPIO descriptor from device resources
* @adev: pointer to a ACPI device to get GPIO from
@@ -451,8 +512,6 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
struct acpi_gpio_info *info)
{
struct acpi_gpio_lookup lookup;
- struct list_head resource_list;
- bool active_low = false;
int ret;
if (!adev)
@@ -462,58 +521,64 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
lookup.index = index;
if (propname) {
- struct acpi_reference_args args;
-
dev_dbg(&adev->dev, "GPIO: looking up %s\n", propname);
- memset(&args, 0, sizeof(args));
- ret = acpi_dev_get_property_reference(adev, propname,
- index, &args);
- if (ret) {
- bool found = acpi_get_driver_gpio_data(adev, propname,
- index, &args);
- if (!found)
- return ERR_PTR(ret);
- }
+ ret = acpi_gpio_property_lookup(acpi_fwnode_handle(adev),
+ propname, index, &lookup);
+ if (ret)
+ return ERR_PTR(ret);
- /*
- * The property was found and resolved so need to
- * lookup the GPIO based on returned args instead.
- */
- adev = args.adev;
- if (args.nargs >= 2) {
- lookup.index = args.args[0];
- lookup.pin_index = args.args[1];
- /*
- * 3rd argument, if present is used to
- * specify active_low.
- */
- if (args.nargs >= 3)
- active_low = !!args.args[2];
- }
-
- dev_dbg(&adev->dev, "GPIO: _DSD returned %s %zd %llu %llu %llu\n",
- dev_name(&adev->dev), args.nargs,
- args.args[0], args.args[1], args.args[2]);
+ dev_dbg(&adev->dev, "GPIO: _DSD returned %s %d %d %u\n",
+ dev_name(&lookup.adev->dev), lookup.index,
+ lookup.pin_index, lookup.active_low);
} else {
dev_dbg(&adev->dev, "GPIO: looking up %d in _CRS\n", index);
+ lookup.adev = adev;
}
- INIT_LIST_HEAD(&resource_list);
- ret = acpi_dev_get_resources(adev, &resource_list, acpi_find_gpio,
- &lookup);
- if (ret < 0)
- return ERR_PTR(ret);
+ ret = acpi_gpio_resource_lookup(&lookup, info);
+ return ret ? ERR_PTR(ret) : lookup.desc;
+}
+
+/**
+ * acpi_node_get_gpiod() - get a GPIO descriptor from ACPI resources
+ * @fwnode: pointer to an ACPI firmware node to get the GPIO information from
+ * @propname: Property name of the GPIO
+ * @index: index of GpioIo/GpioInt resource (starting from %0)
+ * @info: info pointer to fill in (optional)
+ *
+ * If @fwnode is an ACPI device object, call %acpi_get_gpiod_by_index() for it.
+ * Otherwise (ie. it is a data-only non-device object), use the property-based
+ * GPIO lookup to get to the GPIO resource with the relevant information and use
+ * that to obtain the GPIO descriptor to return.
+ */
+struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
+ const char *propname, int index,
+ struct acpi_gpio_info *info)
+{
+ struct acpi_gpio_lookup lookup;
+ struct acpi_device *adev;
+ int ret;
- acpi_dev_free_resource_list(&resource_list);
+ adev = to_acpi_device_node(fwnode);
+ if (adev)
+ return acpi_get_gpiod_by_index(adev, propname, index, info);
- if (lookup.desc && info) {
- *info = lookup.info;
- if (active_low)
- info->active_low = active_low;
- }
+ if (!is_acpi_data_node(fwnode))
+ return ERR_PTR(-ENODEV);
+
+ if (!propname)
+ return ERR_PTR(-EINVAL);
+
+ memset(&lookup, 0, sizeof(lookup));
+ lookup.index = index;
+
+ ret = acpi_gpio_property_lookup(fwnode, propname, index, &lookup);
+ if (ret)
+ return ERR_PTR(ret);
- return lookup.desc ? lookup.desc : ERR_PTR(-ENOENT);
+ ret = acpi_gpio_resource_lookup(&lookup, info);
+ return ret ? ERR_PTR(ret) : lookup.desc;
}
/**
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 6798355c61c6..2a91f3287e3b 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -233,7 +233,7 @@ static struct gpio_desc *gpio_name_to_desc(const char * const name)
for (i = 0; i != chip->ngpio; ++i) {
struct gpio_desc *gpio = &chip->desc[i];
- if (!gpio->name)
+ if (!gpio->name || !name)
continue;
if (!strcmp(gpio->name, name)) {
@@ -2209,8 +2209,7 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
} else if (is_acpi_node(fwnode)) {
struct acpi_gpio_info info;
- desc = acpi_get_gpiod_by_index(to_acpi_node(fwnode), propname, 0,
- &info);
+ desc = acpi_node_get_gpiod(fwnode, propname, 0, &info);
if (!IS_ERR(desc))
active_low = info.active_low;
}
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index 78e634d1c719..98ab08c0aa2d 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -42,6 +42,9 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
const char *propname, int index,
struct acpi_gpio_info *info);
+struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
+ const char *propname, int index,
+ struct acpi_gpio_info *info);
int acpi_gpio_count(struct device *dev, const char *con_id);
#else
@@ -60,7 +63,12 @@ acpi_get_gpiod_by_index(struct acpi_device *adev, const char *propname,
{
return ERR_PTR(-ENOSYS);
}
-
+static inline struct gpio_desc *
+acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname,
+ int index, struct acpi_gpio_info *info)
+{
+ return ERR_PTR(-ENXIO);
+}
static inline int acpi_gpio_count(struct device *dev, const char *con_id)
{
return -ENODEV;
generated by cgit v1.2.3 (git 2.0.4) at 2025-06-04 06:07:12 +0000