diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-17 21:05:32 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-17 21:05:32 -0700 |
commit | 1a46712aa99594eabe1e9aeedf115dfff0db1dfd (patch) | |
tree | 61240865e6b55e2f2b2c174b333c2a097bd4f31e /arch/mips | |
parent | 82b666eee71618b7ca812ee529af116582617dec (diff) | |
parent | ccbd805aa934dd1b863ef115a9c55f119b2388cf (diff) | |
download | linux-1a46712aa99594eabe1e9aeedf115dfff0db1dfd.tar.bz2 |
Merge tag 'gpio-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for kernel v4.6. There is quite a
lot of interesting stuff going on.
The patches to other subsystems and arch-wide are ACKed as far as
possible, though I consider things like per-arch <asm/gpio.h> as
essentially a part of the GPIO subsystem so it should not be needed.
Core changes:
- The gpio_chip is now a *real device*. Until now the gpio chips
were just piggybacking the parent device or (gasp) floating in
space outside of the device model.
We now finally make GPIO chips devices. The gpio_chip will create
a gpio_device which contains a struct device, and this gpio_device
struct is kept private. Anything that needs to be kept private
from the rest of the kernel will gradually be moved over to the
gpio_device.
- As a result of making the gpio_device a real device, we have added
resource management, so devm_gpiochip_add_data() will cut down on
overhead and reduce code lines. A huge slew of patches convert
almost all drivers in the subsystem to use this.
- Building on making the GPIO a real device, we add the first step of
a new userspace ABI: the GPIO character device. We take small
steps here, so we first add a pure *information* ABI and the tool
"lsgpio" that will list all GPIO devices on the system and all
lines on these devices.
We can now discover GPIOs properly from userspace. We still have
not come up with a way to actually *use* GPIOs from userspace.
- To encourage people to use the character device for the future, we
have it always-enabled when using GPIO. The old sysfs ABI is still
opt-in (and can be used in parallel), but is marked as deprecated.
We will keep it around for the foreseeable future, but it will not
be extended to cover ever more use cases.
Cleanup:
- Bjorn Helgaas removed a whole slew of per-architecture <asm/gpio.h>
includes.
This dates back to when GPIO was an opt-in feature and no shared
library even existed: just a header file with proper prototypes was
provided and all semantics were up to the arch to implement. These
patches make the GPIO chip even more a proper device and cleans out
leftovers of the old in-kernel API here and there.
Still some cruft is left but it's very little now.
- There is still some clamping of return values for .get() going on,
but we now return sane values in the vast majority of drivers and
the errorpath is sanitized. Some patches for powerpc, blackfin and
unicore still drop in.
- We continue to switch the ARM, MIPS, blackfin, m68k local GPIO
implementations to use gpiochip_add_data() and cut down on code
lines.
- MPC8xxx is converted to use the generic GPIO helpers.
- ATH79 is converted to use the generic GPIO helpers.
New drivers:
- WinSystems WS16C48
- Acces 104-DIO-48E
- F81866 (a F7188x variant)
- Qoric (a MPC8xxx variant)
- TS-4800
- SPI serializers (pisosr): simple 74xx shift registers connected to
SPI to obtain a dirt-cheap output-only GPIO expander.
- Texas Instruments TPIC2810
- Texas Instruments TPS65218
- Texas Instruments TPS65912
- X-Gene (ARM64) standby GPIO controller"
* tag 'gpio-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (194 commits)
Revert "Share upstreaming patches"
gpio: mcp23s08: Fix clearing of interrupt.
gpiolib: Fix comment referring to gpio_*() in gpiod_*()
gpio: pca953x: Fix pca953x_gpio_set_multiple() on 64-bit
gpio: xgene: Fix kconfig for standby GIPO contoller
gpio: Add generic serializer DT binding
gpio: uapi: use 0xB4 as ioctl() major
gpio: tps65912: fix bad merge
Revert "gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free"
gpio: omap: drop dev field from gpio_bank structure
gpio: mpc8xxx: Slightly update the code for better readability
gpio: mpc8xxx: Remove *read_reg and *write_reg from struct mpc8xxx_gpio_chip
gpio: mpc8xxx: Fixup setting gpio direction output
gpio: mcp23s08: Add support for mcp23s18
dt-bindings: gpio: altera: Fix altr,interrupt-type property
gpio: add driver for MEN 16Z127 GPIO controller
gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free
gpio: timberdale: Switch to devm_ioremap_resource()
gpio: ts4800: Add IMX51 dependency
gpiolib: rewrite gpiodev_add_to_list
...
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/alchemy/common/gpiolib.c | 8 | ||||
-rw-r--r-- | arch/mips/ar7/gpio.c | 26 | ||||
-rw-r--r-- | arch/mips/bcm63xx/gpio.c | 4 | ||||
-rw-r--r-- | arch/mips/jz4740/gpio.c | 10 | ||||
-rw-r--r-- | arch/mips/kernel/gpio_txx9.c | 4 | ||||
-rw-r--r-- | arch/mips/rb532/gpio.c | 12 | ||||
-rw-r--r-- | arch/mips/txx9/generic/setup.c | 10 | ||||
-rw-r--r-- | arch/mips/txx9/rbtx4938/setup.c | 3 |
8 files changed, 35 insertions, 42 deletions
diff --git a/arch/mips/alchemy/common/gpiolib.c b/arch/mips/alchemy/common/gpiolib.c index 84548f704035..e6b90e72c23f 100644 --- a/arch/mips/alchemy/common/gpiolib.c +++ b/arch/mips/alchemy/common/gpiolib.c @@ -160,14 +160,14 @@ static int __init alchemy_gpiochip_init(void) switch (alchemy_get_cputype()) { case ALCHEMY_CPU_AU1000: - ret = gpiochip_add(&alchemy_gpio_chip[0]); + ret = gpiochip_add_data(&alchemy_gpio_chip[0], NULL); break; case ALCHEMY_CPU_AU1500...ALCHEMY_CPU_AU1200: - ret = gpiochip_add(&alchemy_gpio_chip[0]); - ret |= gpiochip_add(&alchemy_gpio_chip[1]); + ret = gpiochip_add_data(&alchemy_gpio_chip[0], NULL); + ret |= gpiochip_add_data(&alchemy_gpio_chip[1], NULL); break; case ALCHEMY_CPU_AU1300: - ret = gpiochip_add(&au1300_gpiochip); + ret = gpiochip_add_data(&au1300_gpiochip, NULL); break; } return ret; diff --git a/arch/mips/ar7/gpio.c b/arch/mips/ar7/gpio.c index f969f583c68c..ed5b3d297caf 100644 --- a/arch/mips/ar7/gpio.c +++ b/arch/mips/ar7/gpio.c @@ -33,8 +33,7 @@ struct ar7_gpio_chip { static int ar7_gpio_get_value(struct gpio_chip *chip, unsigned gpio) { - struct ar7_gpio_chip *gpch = - container_of(chip, struct ar7_gpio_chip, chip); + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); void __iomem *gpio_in = gpch->regs + AR7_GPIO_INPUT; return !!(readl(gpio_in) & (1 << gpio)); @@ -42,8 +41,7 @@ static int ar7_gpio_get_value(struct gpio_chip *chip, unsigned gpio) static int titan_gpio_get_value(struct gpio_chip *chip, unsigned gpio) { - struct ar7_gpio_chip *gpch = - container_of(chip, struct ar7_gpio_chip, chip); + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); void __iomem *gpio_in0 = gpch->regs + TITAN_GPIO_INPUT_0; void __iomem *gpio_in1 = gpch->regs + TITAN_GPIO_INPUT_1; @@ -53,8 +51,7 @@ static int titan_gpio_get_value(struct gpio_chip *chip, unsigned gpio) static void ar7_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value) { - struct ar7_gpio_chip *gpch = - container_of(chip, struct ar7_gpio_chip, chip); + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); void __iomem *gpio_out = gpch->regs + AR7_GPIO_OUTPUT; unsigned tmp; @@ -67,8 +64,7 @@ static void ar7_gpio_set_value(struct gpio_chip *chip, static void titan_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value) { - struct ar7_gpio_chip *gpch = - container_of(chip, struct ar7_gpio_chip, chip); + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); void __iomem *gpio_out0 = gpch->regs + TITAN_GPIO_OUTPUT_0; void __iomem *gpio_out1 = gpch->regs + TITAN_GPIO_OUTPUT_1; unsigned tmp; @@ -81,8 +77,7 @@ static void titan_gpio_set_value(struct gpio_chip *chip, static int ar7_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) { - struct ar7_gpio_chip *gpch = - container_of(chip, struct ar7_gpio_chip, chip); + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); void __iomem *gpio_dir = gpch->regs + AR7_GPIO_DIR; writel(readl(gpio_dir) | (1 << gpio), gpio_dir); @@ -92,8 +87,7 @@ static int ar7_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) static int titan_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) { - struct ar7_gpio_chip *gpch = - container_of(chip, struct ar7_gpio_chip, chip); + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); void __iomem *gpio_dir0 = gpch->regs + TITAN_GPIO_DIR_0; void __iomem *gpio_dir1 = gpch->regs + TITAN_GPIO_DIR_1; @@ -108,8 +102,7 @@ static int titan_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) static int ar7_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value) { - struct ar7_gpio_chip *gpch = - container_of(chip, struct ar7_gpio_chip, chip); + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); void __iomem *gpio_dir = gpch->regs + AR7_GPIO_DIR; ar7_gpio_set_value(chip, gpio, value); @@ -121,8 +114,7 @@ static int ar7_gpio_direction_output(struct gpio_chip *chip, static int titan_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value) { - struct ar7_gpio_chip *gpch = - container_of(chip, struct ar7_gpio_chip, chip); + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); void __iomem *gpio_dir0 = gpch->regs + TITAN_GPIO_DIR_0; void __iomem *gpio_dir1 = gpch->regs + TITAN_GPIO_DIR_1; @@ -335,7 +327,7 @@ int __init ar7_gpio_init(void) return -ENOMEM; } - ret = gpiochip_add(&gpch->chip); + ret = gpiochip_add_data(&gpch->chip, gpch); if (ret) { printk(KERN_ERR "%s: failed to add gpiochip\n", gpch->chip.label); diff --git a/arch/mips/bcm63xx/gpio.c b/arch/mips/bcm63xx/gpio.c index 468bc7b99cd3..7c256dadb166 100644 --- a/arch/mips/bcm63xx/gpio.c +++ b/arch/mips/bcm63xx/gpio.c @@ -11,7 +11,7 @@ #include <linux/module.h> #include <linux/spinlock.h> #include <linux/platform_device.h> -#include <linux/gpio.h> +#include <linux/gpio/driver.h> #include <bcm63xx_cpu.h> #include <bcm63xx_gpio.h> @@ -147,5 +147,5 @@ int __init bcm63xx_gpio_init(void) bcm63xx_gpio_chip.ngpio = bcm63xx_gpio_count(); pr_info("registering %d GPIOs\n", bcm63xx_gpio_chip.ngpio); - return gpiochip_add(&bcm63xx_gpio_chip); + return gpiochip_add_data(&bcm63xx_gpio_chip, NULL); } diff --git a/arch/mips/jz4740/gpio.c b/arch/mips/jz4740/gpio.c index d9907e57e9b9..b765773ab8aa 100644 --- a/arch/mips/jz4740/gpio.c +++ b/arch/mips/jz4740/gpio.c @@ -18,6 +18,8 @@ #include <linux/init.h> #include <linux/io.h> +#include <linux/gpio/driver.h> +/* FIXME: needed for gpio_request(), try to remove consumer API from driver */ #include <linux/gpio.h> #include <linux/delay.h> #include <linux/interrupt.h> @@ -91,9 +93,9 @@ static inline struct jz_gpio_chip *gpio_to_jz_gpio_chip(unsigned int gpio) return &jz4740_gpio_chips[gpio >> 5]; } -static inline struct jz_gpio_chip *gpio_chip_to_jz_gpio_chip(struct gpio_chip *gpio_chip) +static inline struct jz_gpio_chip *gpio_chip_to_jz_gpio_chip(struct gpio_chip *gc) { - return container_of(gpio_chip, struct jz_gpio_chip, gpio_chip); + return gpiochip_get_data(gc); } static inline struct jz_gpio_chip *irq_to_jz_gpio_chip(struct irq_data *data) @@ -234,7 +236,7 @@ static int jz_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) static int jz_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) { - struct jz_gpio_chip *jz_gpio = gpio_chip_to_jz_gpio_chip(chip); + struct jz_gpio_chip *jz_gpio = gpiochip_get_data(chip); return jz_gpio->irq_base + gpio; } @@ -449,7 +451,7 @@ static void jz4740_gpio_chip_init(struct jz_gpio_chip *chip, unsigned int id) irq_setup_generic_chip(gc, IRQ_MSK(chip->gpio_chip.ngpio), IRQ_GC_INIT_NESTED_LOCK, 0, IRQ_NOPROBE | IRQ_LEVEL); - gpiochip_add(&chip->gpio_chip); + gpiochip_add_data(&chip->gpio_chip, chip); } static int __init jz4740_gpio_init(void) diff --git a/arch/mips/kernel/gpio_txx9.c b/arch/mips/kernel/gpio_txx9.c index 705be43c3533..cbd47f38073b 100644 --- a/arch/mips/kernel/gpio_txx9.c +++ b/arch/mips/kernel/gpio_txx9.c @@ -10,7 +10,7 @@ #include <linux/init.h> #include <linux/spinlock.h> -#include <linux/gpio.h> +#include <linux/gpio/driver.h> #include <linux/errno.h> #include <linux/io.h> #include <asm/txx9pio.h> @@ -85,5 +85,5 @@ int __init txx9_gpio_init(unsigned long baseaddr, return -ENODEV; txx9_gpio_chip.base = base; txx9_gpio_chip.ngpio = num; - return gpiochip_add(&txx9_gpio_chip); + return gpiochip_add_data(&txx9_gpio_chip, NULL); } diff --git a/arch/mips/rb532/gpio.c b/arch/mips/rb532/gpio.c index fd1108543a71..fdc704abc8d4 100644 --- a/arch/mips/rb532/gpio.c +++ b/arch/mips/rb532/gpio.c @@ -32,7 +32,7 @@ #include <linux/export.h> #include <linux/spinlock.h> #include <linux/platform_device.h> -#include <linux/gpio.h> +#include <linux/gpio/driver.h> #include <asm/mach-rc32434/rb.h> #include <asm/mach-rc32434/gpio.h> @@ -88,7 +88,7 @@ static int rb532_gpio_get(struct gpio_chip *chip, unsigned offset) { struct rb532_gpio_chip *gpch; - gpch = container_of(chip, struct rb532_gpio_chip, chip); + gpch = gpiochip_get_data(chip); return !!rb532_get_bit(offset, gpch->regbase + GPIOD); } @@ -100,7 +100,7 @@ static void rb532_gpio_set(struct gpio_chip *chip, { struct rb532_gpio_chip *gpch; - gpch = container_of(chip, struct rb532_gpio_chip, chip); + gpch = gpiochip_get_data(chip); rb532_set_bit(value, offset, gpch->regbase + GPIOD); } @@ -111,7 +111,7 @@ static int rb532_gpio_direction_input(struct gpio_chip *chip, unsigned offset) { struct rb532_gpio_chip *gpch; - gpch = container_of(chip, struct rb532_gpio_chip, chip); + gpch = gpiochip_get_data(chip); /* disable alternate function in case it's set */ rb532_set_bit(0, offset, gpch->regbase + GPIOFUNC); @@ -128,7 +128,7 @@ static int rb532_gpio_direction_output(struct gpio_chip *chip, { struct rb532_gpio_chip *gpch; - gpch = container_of(chip, struct rb532_gpio_chip, chip); + gpch = gpiochip_get_data(chip); /* disable alternate function in case it's set */ rb532_set_bit(0, offset, gpch->regbase + GPIOFUNC); @@ -200,7 +200,7 @@ int __init rb532_gpio_init(void) } /* Register our GPIO chip */ - gpiochip_add(&rb532_gpio_chip->chip); + gpiochip_add_data(&rb532_gpio_chip->chip, rb532_gpio_chip); return 0; } diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c index 2fd350f31f4b..108f8a8d1640 100644 --- a/arch/mips/txx9/generic/setup.c +++ b/arch/mips/txx9/generic/setup.c @@ -17,7 +17,7 @@ #include <linux/module.h> #include <linux/clk.h> #include <linux/err.h> -#include <linux/gpio.h> +#include <linux/gpio/driver.h> #include <linux/platform_device.h> #include <linux/serial_core.h> #include <linux/mtd/physmap.h> @@ -687,16 +687,14 @@ struct txx9_iocled_data { static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset) { - struct txx9_iocled_data *data = - container_of(chip, struct txx9_iocled_data, chip); + struct txx9_iocled_data *data = gpiochip_get_data(chip); return !!(data->cur_val & (1 << offset)); } static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset, int value) { - struct txx9_iocled_data *data = - container_of(chip, struct txx9_iocled_data, chip); + struct txx9_iocled_data *data = gpiochip_get_data(chip); unsigned long flags; spin_lock_irqsave(&txx9_iocled_lock, flags); if (value) @@ -749,7 +747,7 @@ void __init txx9_iocled_init(unsigned long baseaddr, iocled->chip.label = "iocled"; iocled->chip.base = basenum; iocled->chip.ngpio = num; - if (gpiochip_add(&iocled->chip)) + if (gpiochip_add_data(&iocled->chip, iocled)) goto out_unmap; if (basenum < 0) basenum = iocled->chip.base; diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c index c9afd05020e0..54de66837103 100644 --- a/arch/mips/txx9/rbtx4938/setup.c +++ b/arch/mips/txx9/rbtx4938/setup.c @@ -14,6 +14,7 @@ #include <linux/ioport.h> #include <linux/delay.h> #include <linux/platform_device.h> +#include <linux/gpio/driver.h> #include <linux/gpio.h> #include <linux/mtd/physmap.h> @@ -335,7 +336,7 @@ static void __init rbtx4938_mtd_init(void) static void __init rbtx4938_arch_init(void) { - gpiochip_add(&rbtx4938_spi_gpio_chip); + gpiochip_add_data(&rbtx4938_spi_gpio_chip, NULL); rbtx4938_pci_setup(); rbtx4938_spi_init(); } |