diff options
Diffstat (limited to 'kernel/drivers/gpio')
| -rw-r--r-- | kernel/drivers/gpio/Kconfig | 1 | ||||
| -rw-r--r-- | kernel/drivers/gpio/gpio-bcm-kona.c | 4 | ||||
| -rw-r--r-- | kernel/drivers/gpio/gpio-intel-mid.c | 19 | ||||
| -rw-r--r-- | kernel/drivers/gpio/gpio-mpc8xxx.c | 2 | ||||
| -rw-r--r-- | kernel/drivers/gpio/gpio-pca953x.c | 2 | ||||
| -rw-r--r-- | kernel/drivers/gpio/gpio-sa1100.c | 2 | ||||
| -rw-r--r-- | kernel/drivers/gpio/gpiolib-legacy.c | 8 | ||||
| -rw-r--r-- | kernel/drivers/gpio/gpiolib.c | 52 |
8 files changed, 26 insertions, 64 deletions
diff --git a/kernel/drivers/gpio/Kconfig b/kernel/drivers/gpio/Kconfig index b18bea08f..469dc378a 100644 --- a/kernel/drivers/gpio/Kconfig +++ b/kernel/drivers/gpio/Kconfig @@ -50,6 +50,7 @@ config GPIO_DEVRES config OF_GPIO def_bool y depends on OF + depends on HAS_IOMEM config GPIO_ACPI def_bool y diff --git a/kernel/drivers/gpio/gpio-bcm-kona.c b/kernel/drivers/gpio/gpio-bcm-kona.c index 33a1f9779..4ea71d505 100644 --- a/kernel/drivers/gpio/gpio-bcm-kona.c +++ b/kernel/drivers/gpio/gpio-bcm-kona.c @@ -551,11 +551,11 @@ static void bcm_kona_gpio_reset(struct bcm_kona_gpio *kona_gpio) /* disable interrupts and clear status */ for (i = 0; i < kona_gpio->num_bank; i++) { /* Unlock the entire bank first */ - bcm_kona_gpio_write_lock_regs(kona_gpio, i, UNLOCK_CODE); + bcm_kona_gpio_write_lock_regs(reg_base, i, UNLOCK_CODE); writel(0xffffffff, reg_base + GPIO_INT_MASK(i)); writel(0xffffffff, reg_base + GPIO_INT_STATUS(i)); /* Now re-lock the bank */ - bcm_kona_gpio_write_lock_regs(kona_gpio, i, LOCK_CODE); + bcm_kona_gpio_write_lock_regs(reg_base, i, LOCK_CODE); } } diff --git a/kernel/drivers/gpio/gpio-intel-mid.c b/kernel/drivers/gpio/gpio-intel-mid.c index 70097472b..c50e930d9 100644 --- a/kernel/drivers/gpio/gpio-intel-mid.c +++ b/kernel/drivers/gpio/gpio-intel-mid.c @@ -17,7 +17,6 @@ * Moorestown platform Langwell chip. * Medfield platform Penwell chip. * Clovertrail platform Cloverview chip. - * Merrifield platform Tangier chip. */ #include <linux/module.h> @@ -64,10 +63,6 @@ enum GPIO_REG { /* intel_mid gpio driver data */ struct intel_mid_gpio_ddata { u16 ngpio; /* number of gpio pins */ - u32 gplr_offset; /* offset of first GPLR register from base */ - u32 flis_base; /* base address of FLIS registers */ - u32 flis_len; /* length of FLIS registers */ - u32 (*get_flis_offset)(int gpio); u32 chip_irq_type; /* chip interrupt type */ }; @@ -257,15 +252,6 @@ static const struct intel_mid_gpio_ddata gpio_cloverview_core = { .chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE, }; -static const struct intel_mid_gpio_ddata gpio_tangier = { - .ngpio = 192, - .gplr_offset = 4, - .flis_base = 0xff0c0000, - .flis_len = 0x8000, - .get_flis_offset = NULL, - .chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE, -}; - static const struct pci_device_id intel_gpio_ids[] = { { /* Lincroft */ @@ -292,11 +278,6 @@ static const struct pci_device_id intel_gpio_ids[] = { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x08f7), .driver_data = (kernel_ulong_t)&gpio_cloverview_core, }, - { - /* Tangier */ - PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x1199), - .driver_data = (kernel_ulong_t)&gpio_tangier, - }, { 0 } }; MODULE_DEVICE_TABLE(pci, intel_gpio_ids); diff --git a/kernel/drivers/gpio/gpio-mpc8xxx.c b/kernel/drivers/gpio/gpio-mpc8xxx.c index 48ef36834..9e02cb6af 100644 --- a/kernel/drivers/gpio/gpio-mpc8xxx.c +++ b/kernel/drivers/gpio/gpio-mpc8xxx.c @@ -329,7 +329,7 @@ static int mpc8xxx_gpio_irq_map(struct irq_domain *h, unsigned int irq, irq_hw_number_t hwirq) { irq_set_chip_data(irq, h->host_data); - irq_set_chip_and_handler(irq, &mpc8xxx_irq_chip, handle_level_irq); + irq_set_chip_and_handler(irq, &mpc8xxx_irq_chip, handle_edge_irq); return 0; } diff --git a/kernel/drivers/gpio/gpio-pca953x.c b/kernel/drivers/gpio/gpio-pca953x.c index 2d4892cc7..c844d7ecc 100644 --- a/kernel/drivers/gpio/gpio-pca953x.c +++ b/kernel/drivers/gpio/gpio-pca953x.c @@ -86,7 +86,7 @@ MODULE_DEVICE_TABLE(acpi, pca953x_acpi_ids); #define MAX_BANK 5 #define BANK_SZ 8 -#define NBANK(chip) (chip->gpio_chip.ngpio / BANK_SZ) +#define NBANK(chip) DIV_ROUND_UP(chip->gpio_chip.ngpio, BANK_SZ) struct pca953x_chip { unsigned gpio_start; diff --git a/kernel/drivers/gpio/gpio-sa1100.c b/kernel/drivers/gpio/gpio-sa1100.c index 990fa9023..3b6bce051 100644 --- a/kernel/drivers/gpio/gpio-sa1100.c +++ b/kernel/drivers/gpio/gpio-sa1100.c @@ -155,7 +155,7 @@ static int sa1100_gpio_irqdomain_map(struct irq_domain *d, { irq_set_chip_and_handler(irq, &sa1100_gpio_irq_chip, handle_edge_irq); - irq_set_noprobe(irq); + irq_set_probe(irq); return 0; } diff --git a/kernel/drivers/gpio/gpiolib-legacy.c b/kernel/drivers/gpio/gpiolib-legacy.c index 3a5c7011a..8b830996f 100644 --- a/kernel/drivers/gpio/gpiolib-legacy.c +++ b/kernel/drivers/gpio/gpiolib-legacy.c @@ -28,6 +28,10 @@ int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) if (!desc && gpio_is_valid(gpio)) return -EPROBE_DEFER; + err = gpiod_request(desc, label); + if (err) + return err; + if (flags & GPIOF_OPEN_DRAIN) set_bit(FLAG_OPEN_DRAIN, &desc->flags); @@ -37,10 +41,6 @@ int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) if (flags & GPIOF_ACTIVE_LOW) set_bit(FLAG_ACTIVE_LOW, &desc->flags); - err = gpiod_request(desc, label); - if (err) - return err; - if (flags & GPIOF_DIR_IN) err = gpiod_direction_input(desc); else diff --git a/kernel/drivers/gpio/gpiolib.c b/kernel/drivers/gpio/gpiolib.c index 4e4c3083a..06d345b08 100644 --- a/kernel/drivers/gpio/gpiolib.c +++ b/kernel/drivers/gpio/gpiolib.c @@ -927,14 +927,6 @@ static int __gpiod_request(struct gpio_desc *desc, const char *label) spin_lock_irqsave(&gpio_lock, flags); } done: - if (status < 0) { - /* Clear flags that might have been set by the caller before - * requesting the GPIO. - */ - clear_bit(FLAG_ACTIVE_LOW, &desc->flags); - clear_bit(FLAG_OPEN_DRAIN, &desc->flags); - clear_bit(FLAG_OPEN_SOURCE, &desc->flags); - } spin_unlock_irqrestore(&gpio_lock, flags); return status; } @@ -2062,28 +2054,13 @@ struct gpio_desc *__must_check gpiod_get_optional(struct device *dev, } EXPORT_SYMBOL_GPL(gpiod_get_optional); -/** - * gpiod_parse_flags - helper function to parse GPIO lookup flags - * @desc: gpio to be setup - * @lflags: gpio_lookup_flags - returned from of_find_gpio() or - * of_get_gpio_hog() - * - * Set the GPIO descriptor flags based on the given GPIO lookup flags. - */ -static void gpiod_parse_flags(struct gpio_desc *desc, unsigned long lflags) -{ - if (lflags & GPIO_ACTIVE_LOW) - set_bit(FLAG_ACTIVE_LOW, &desc->flags); - if (lflags & GPIO_OPEN_DRAIN) - set_bit(FLAG_OPEN_DRAIN, &desc->flags); - if (lflags & GPIO_OPEN_SOURCE) - set_bit(FLAG_OPEN_SOURCE, &desc->flags); -} /** * gpiod_configure_flags - helper function to configure a given GPIO * @desc: gpio whose value will be assigned * @con_id: function within the GPIO consumer + * @lflags: gpio_lookup_flags - returned from of_find_gpio() or + * of_get_gpio_hog() * @dflags: gpiod_flags - optional GPIO initialization flags * * Return 0 on success, -ENOENT if no GPIO has been assigned to the @@ -2091,10 +2068,17 @@ static void gpiod_parse_flags(struct gpio_desc *desc, unsigned long lflags) * occurred while trying to acquire the GPIO. */ static int gpiod_configure_flags(struct gpio_desc *desc, const char *con_id, - enum gpiod_flags dflags) + unsigned long lflags, enum gpiod_flags dflags) { int status; + if (lflags & GPIO_ACTIVE_LOW) + set_bit(FLAG_ACTIVE_LOW, &desc->flags); + if (lflags & GPIO_OPEN_DRAIN) + set_bit(FLAG_OPEN_DRAIN, &desc->flags); + if (lflags & GPIO_OPEN_SOURCE) + set_bit(FLAG_OPEN_SOURCE, &desc->flags); + /* No particular flag request, return here... */ if (!(dflags & GPIOD_FLAGS_BIT_DIR_SET)) { pr_debug("no flags found for %s\n", con_id); @@ -2161,13 +2145,11 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev, return desc; } - gpiod_parse_flags(desc, lookupflags); - status = gpiod_request(desc, con_id); if (status < 0) return ERR_PTR(status); - status = gpiod_configure_flags(desc, con_id, flags); + status = gpiod_configure_flags(desc, con_id, lookupflags, flags); if (status < 0) { dev_dbg(dev, "setup of GPIO %s failed\n", con_id); gpiod_put(desc); @@ -2223,6 +2205,10 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, if (IS_ERR(desc)) return desc; + ret = gpiod_request(desc, NULL); + if (ret) + return ERR_PTR(ret); + if (active_low) set_bit(FLAG_ACTIVE_LOW, &desc->flags); @@ -2233,10 +2219,6 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, set_bit(FLAG_OPEN_SOURCE, &desc->flags); } - ret = gpiod_request(desc, NULL); - if (ret) - return ERR_PTR(ret); - return desc; } EXPORT_SYMBOL_GPL(fwnode_get_named_gpiod); @@ -2289,8 +2271,6 @@ int gpiod_hog(struct gpio_desc *desc, const char *name, chip = gpiod_to_chip(desc); hwnum = gpio_chip_hwgpio(desc); - gpiod_parse_flags(desc, lflags); - local_desc = gpiochip_request_own_desc(chip, hwnum, name); if (IS_ERR(local_desc)) { pr_err("requesting hog GPIO %s (chip %s, offset %d) failed\n", @@ -2298,7 +2278,7 @@ int gpiod_hog(struct gpio_desc *desc, const char *name, return PTR_ERR(local_desc); } - status = gpiod_configure_flags(desc, name, dflags); + status = gpiod_configure_flags(desc, name, lflags, dflags); if (status < 0) { pr_err("setup of hog GPIO %s (chip %s, offset %d) failed\n", name, chip->label, hwnum); |