diff options
| author | Linus Torvalds | 2022-01-11 12:31:35 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2022-01-11 12:31:35 -0800 |
| commit | c288ea679840de4dee2ce6da5d0f139e3774ad86 (patch) | |
| tree | 0997ce04fa671113349ad10025bbabb3155f3018 /drivers/gpio | |
| parent | 1151e3cd5a7375ebc839ad3e6c51d87700fe019e (diff) | |
| parent | ffe31c9ed35d70069ee76d6b6d41ac86a17d7a07 (diff) | |
Merge tag 'gpio-updates-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"The gpio-sim module is back, this time without any changes to
configfs. This results in a less elegant user-space interface but I
never got any follow-up on the committable items and didn't want to
delay this module for several more months.
Other than that we have support for several new models and some
support going away. We started working on converting GPIO drivers to
using fwnode exclusively in order to limit references to OF symbols to
gpiolib-of.c exclusively. We also have regular tweaks and improvements
all over the place.
Summary:
- new testing module: gpio-sim that is scheduled to replace
gpio-mockup
- initial changes aiming at converting all GPIO drivers to using the
fwnode interface and limiting any references to OF symbols to
gpiolib-of.c
- add support for Tegra234 and Tegra241 to gpio-tegra186
- add support for new models (SSD201 and SSD202D) to gpio-msc313
- add basic support for interrupts to gpio-aggregator
- add support for AMDIF031 HID device to gpio-amdpt
- drop support for unused platforms in gpio-xlp
- cleanup leftovers from the removal of the legacy Samsung Exynos
GPIO driver
- use raw spinlocks in gpio-aspeed and gpio-aspeed-sgpio to make
PREEMPT_RT happy
- generalize the common 'ngpios' device property by reading it in the
core gpiolib code so that we can remove duplicate reads from
drivers
- allow line names from device properties to override names set by
drivers
- code shrink in gpiod_add_lookup_table()
- add new model to the DT bindings for gpio-vf610
- convert DT bindings for tegra devices to YAML
- improvements to interrupt handling in gpio-rcar and gpio-rockchip
- updates to intel drivers from Andy (details in the merge commit)
- some minor tweaks, improvements and coding-style fixes all around
the subsystem"
* tag 'gpio-updates-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (59 commits)
gpio: rcar: Propagate errors from devm_request_irq()
gpio: rcar: Use platform_get_irq() to get the interrupt
gpio: ts5500: Use platform_get_irq() to get the interrupt
gpio: dwapb: Switch to use fwnode instead of of_node
gpiolib: acpi: make fwnode take precedence in struct gpio_chip
dt-bindings: gpio: samsung: drop unused bindings
gpio: max3191x: Use bitmap_free() to free bitmap
gpio: regmap: Switch to use fwnode instead of of_node
gpio: tegra186: Add support for Tegra241
dt-bindings: gpio: Add Tegra241 support
gpio: brcmstb: Use local variable to access OF node
gpio: Remove unused local OF node pointers
gpio: sim: add missing fwnode_handle_put() in gpio_sim_probe()
gpio: msc313: Add support for SSD201 and SSD202D
gpio: msc313: Code clean ups
dt-bindings: gpio: msc313: Add offsets for ssd20xd
dt-bindings: gpio: msc313: Add compatible for ssd20xd
gpio: sim: fix uninitialized ret variable
gpio: Propagate firmware node from a parent device
gpio: Setup parent device and get rid of unnecessary of_node assignment
...
Diffstat (limited to 'drivers/gpio')
54 files changed, 2256 insertions, 382 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 1ca78263f0f7..1c211b4c63be 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -731,14 +731,12 @@ config GPIO_XILINX Say yes here to support the Xilinx FPGA GPIO device. config GPIO_XLP - tristate "Netlogic XLP GPIO support" - depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST) + tristate "Cavium ThunderX2 GPIO support" + depends on ARCH_THUNDER2 || COMPILE_TEST select GPIOLIB_IRQCHIP help - This driver provides support for GPIO interface on Netlogic XLP MIPS64 - SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX, - XLP9XX and XLP5XX. The same GPIO controller block is also present in - Cavium's ThunderX2 CN99XX SoCs. + This driver provides support for GPIO interface on Cavium's ThunderX2 + CN99XX SoCs (Originally from Netlogic XLP). If unsure, say N. @@ -1683,6 +1681,14 @@ config GPIO_VIRTIO These virtual GPIOs can be routed to real GPIOs or attached to simulators on the host (like QEMU). +config GPIO_SIM + tristate "GPIO Simulator Module" + select IRQ_SIM + select CONFIGFS_FS + help + This enables the GPIO simulator - a configfs-based GPIO testing + driver. + endmenu endif diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index ed5f9b1a75ce..edbaa3cb343c 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -132,6 +132,7 @@ obj-$(CONFIG_GPIO_SAMA5D2_PIOBU) += gpio-sama5d2-piobu.o obj-$(CONFIG_GPIO_SCH311X) += gpio-sch311x.o obj-$(CONFIG_GPIO_SCH) += gpio-sch.o obj-$(CONFIG_GPIO_SIFIVE) += gpio-sifive.o +obj-$(CONFIG_GPIO_SIM) += gpio-sim.o obj-$(CONFIG_GPIO_SIOX) += gpio-siox.o obj-$(CONFIG_GPIO_SL28CPLD) += gpio-sl28cpld.o obj-$(CONFIG_GPIO_SODAVILLE) += gpio-sodaville.o diff --git a/drivers/gpio/gpio-adnp.c b/drivers/gpio/gpio-adnp.c index 8eedfc6451df..cc349d4e4973 100644 --- a/drivers/gpio/gpio-adnp.c +++ b/drivers/gpio/gpio-adnp.c @@ -458,7 +458,6 @@ static int adnp_gpio_setup(struct adnp *adnp, unsigned int num_gpios, chip->ngpio = num_gpios; chip->label = adnp->client->name; chip->parent = &adnp->client->dev; - chip->of_node = chip->parent->of_node; chip->owner = THIS_MODULE; if (is_irq_controller) { diff --git a/drivers/gpio/gpio-aggregator.c b/drivers/gpio/gpio-aggregator.c index e9671d1660ef..869dc952cf45 100644 --- a/drivers/gpio/gpio-aggregator.c +++ b/drivers/gpio/gpio-aggregator.c @@ -371,6 +371,13 @@ static int gpio_fwd_set_config(struct gpio_chip *chip, unsigned int offset, return gpiod_set_config(fwd->descs[offset], config); } +static int gpio_fwd_to_irq(struct gpio_chip *chip, unsigned int offset) +{ + struct gpiochip_fwd *fwd = gpiochip_get_data(chip); + + return gpiod_to_irq(fwd->descs[offset]); +} + /** * gpiochip_fwd_create() - Create a new GPIO forwarder * @dev: Parent device pointer @@ -411,7 +418,8 @@ static struct gpiochip_fwd *gpiochip_fwd_create(struct device *dev, for (i = 0; i < ngpios; i++) { struct gpio_chip *parent = gpiod_to_chip(descs[i]); - dev_dbg(dev, "%u => gpio-%d\n", i, desc_to_gpio(descs[i])); + dev_dbg(dev, "%u => gpio %d irq %d\n", i, + desc_to_gpio(descs[i]), gpiod_to_irq(descs[i])); if (gpiod_cansleep(descs[i])) chip->can_sleep = true; @@ -429,6 +437,7 @@ static struct gpiochip_fwd *gpiochip_fwd_create(struct device *dev, chip->get_multiple = gpio_fwd_get_multiple_locked; chip->set = gpio_fwd_set; chip->set_multiple = gpio_fwd_set_multiple_locked; + chip->to_irq = gpio_fwd_to_irq; chip->base = -1; chip->ngpio = ngpios; fwd->descs = descs; diff --git a/drivers/gpio/gpio-amdpt.c b/drivers/gpio/gpio-amdpt.c index bbf53e289141..8cfb353c3abb 100644 --- a/drivers/gpio/gpio-amdpt.c +++ b/drivers/gpio/gpio-amdpt.c @@ -14,6 +14,7 @@ #include <linux/platform_device.h> #define PT_TOTAL_GPIO 8 +#define PT_TOTAL_GPIO_EX 24 /* PCI-E MMIO register offsets */ #define PT_DIRECTION_REG 0x00 @@ -103,10 +104,8 @@ static int pt_gpio_probe(struct platform_device *pdev) 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 = dev->of_node; -#endif + pt_gpio->gc.ngpio = (uintptr_t)device_get_match_data(dev); + ret = gpiochip_add_data(&pt_gpio->gc, pt_gpio); if (ret) { dev_err(dev, "Failed to register GPIO lib\n"); @@ -133,8 +132,9 @@ static int pt_gpio_remove(struct platform_device *pdev) } static const struct acpi_device_id pt_gpio_acpi_match[] = { - { "AMDF030", 0 }, - { "AMDIF030", 0 }, + { "AMDF030", PT_TOTAL_GPIO }, + { "AMDIF030", PT_TOTAL_GPIO }, + { "AMDIF031", PT_TOTAL_GPIO_EX }, { }, }; MODULE_DEVICE_TABLE(acpi, pt_gpio_acpi_match); diff --git a/drivers/gpio/gpio-arizona.c b/drivers/gpio/gpio-arizona.c index 2bc173c352ce..02f9ae19cd44 100644 --- a/drivers/gpio/gpio-arizona.c +++ b/drivers/gpio/gpio-arizona.c @@ -151,6 +151,8 @@ static int arizona_gpio_probe(struct platform_device *pdev) struct arizona_gpio *arizona_gpio; int ret; + device_set_node(&pdev->dev, dev_fwnode(pdev->dev.parent)); + arizona_gpio = devm_kzalloc(&pdev->dev, sizeof(*arizona_gpio), GFP_KERNEL); if (!arizona_gpio) @@ -159,9 +161,6 @@ static int arizona_gpio_probe(struct platform_device *pdev) arizona_gpio->arizona = arizona; arizona_gpio->gpio_chip = template_chip; arizona_gpio->gpio_chip.parent = &pdev->dev; -#ifdef CONFIG_OF_GPIO - arizona_gpio->gpio_chip.of_node = arizona->dev->of_node; -#endif switch (arizona->type) { case WM5102: diff --git a/drivers/gpio/gpio-aspeed-sgpio.c b/drivers/gpio/gpio-aspeed-sgpio.c index b3a9b8488f11..454cefbeecf0 100644 --- a/drivers/gpio/gpio-aspeed-sgpio.c +++ b/drivers/gpio/gpio-aspeed-sgpio.c @@ -31,7 +31,7 @@ struct aspeed_sgpio { struct gpio_chip chip; struct irq_chip intc; struct clk *pclk; - spinlock_t lock; + raw_spinlock_t lock; void __iomem *base; int irq; }; @@ -173,12 +173,12 @@ static int aspeed_sgpio_get(struct gpio_chip *gc, unsigned int offset) enum aspeed_sgpio_reg reg; int rc = 0; - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); reg = aspeed_sgpio_is_input(offset) ? reg_val : reg_rdata; rc = !!(ioread32(bank_reg(gpio, bank, reg)) & GPIO_BIT(offset)); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return rc; } @@ -215,11 +215,11 @@ static void aspeed_sgpio_set(struct gpio_chip *gc, unsigned int offset, int val) struct aspeed_sgpio *gpio = gpiochip_get_data(gc); unsigned long flags; - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); sgpio_set_value(gc, offset, val); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); } static int aspeed_sgpio_dir_in(struct gpio_chip *gc, unsigned int offset) @@ -236,9 +236,9 @@ static int aspeed_sgpio_dir_out(struct gpio_chip *gc, unsigned int offset, int v /* No special action is required for setting the direction; we'll * error-out in sgpio_set_value if this isn't an output GPIO */ - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); rc = sgpio_set_value(gc, offset, val); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return rc; } @@ -277,11 +277,11 @@ static void aspeed_sgpio_irq_ack(struct irq_data *d) status_addr = bank_reg(gpio, bank, reg_irq_status); - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); iowrite32(bit, status_addr); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); } static void aspeed_sgpio_irq_set_mask(struct irq_data *d, bool set) @@ -296,7 +296,7 @@ static void aspeed_sgpio_irq_set_mask(struct irq_data *d, bool set) irqd_to_aspeed_sgpio_data(d, &gpio, &bank, &bit, &offset); addr = bank_reg(gpio, bank, reg_irq_enable); - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); reg = ioread32(addr); if (set) @@ -306,7 +306,7 @@ static void aspeed_sgpio_irq_set_mask(struct irq_data *d, bool set) iowrite32(reg, addr); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); } static void aspeed_sgpio_irq_mask(struct irq_data *d) @@ -355,7 +355,7 @@ static int aspeed_sgpio_set_type(struct irq_data *d, unsigned int type) return -EINVAL; } - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); addr = bank_reg(gpio, bank, reg_irq_type0); reg = ioread32(addr); @@ -372,7 +372,7 @@ static int aspeed_sgpio_set_type(struct irq_data *d, unsigned int type) reg = (reg & ~bit) | type2; iowrite32(reg, addr); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); irq_set_handler_locked(d, handler); @@ -467,7 +467,7 @@ static int aspeed_sgpio_reset_tolerance(struct gpio_chip *chip, reg = bank_reg(gpio, to_bank(offset), reg_tolerance); - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); val = readl(reg); @@ -478,7 +478,7 @@ static int aspeed_sgpio_reset_tolerance(struct gpio_chip *chip, writel(val, reg); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return 0; } @@ -575,7 +575,7 @@ static int __init aspeed_sgpio_probe(struct platform_device *pdev) iowrite32(FIELD_PREP(ASPEED_SGPIO_CLK_DIV_MASK, sgpio_clk_div) | gpio_cnt_regval | ASPEED_SGPIO_ENABLE, gpio->base + ASPEED_SGPIO_CTRL); - spin_lock_init(&gpio->lock); + raw_spin_lock_init(&gpio->lock); gpio->chip.parent = &pdev->dev; gpio->chip.ngpio = nr_gpios * 2; diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c index 3c8f20c57695..318a7d95a1a8 100644 --- a/drivers/gpio/gpio-aspeed.c +++ b/drivers/gpio/gpio-aspeed.c @@ -53,7 +53,7 @@ struct aspeed_gpio_config { struct aspeed_gpio { struct gpio_chip chip; struct irq_chip irqc; - spinlock_t lock; + raw_spinlock_t lock; void __iomem *base; int irq; const struct aspeed_gpio_config *config; @@ -413,14 +413,14 @@ static void aspeed_gpio_set(struct gpio_chip *gc, unsigned int offset, unsigned long flags; bool copro; - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); copro = aspeed_gpio_copro_request(gpio, offset); __aspeed_gpio_set(gc, offset, val); if (copro) aspeed_gpio_copro_release(gpio, offset); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); } static int aspeed_gpio_dir_in(struct gpio_chip *gc, unsigned int offset) @@ -435,7 +435,7 @@ static int aspeed_gpio_dir_in(struct gpio_chip *gc, unsigned int offset) if (!have_input(gpio, offset)) return -ENOTSUPP; - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); reg = ioread32(addr); reg &= ~GPIO_BIT(offset); @@ -445,7 +445,7 @@ static int aspeed_gpio_dir_in(struct gpio_chip *gc, unsigned int offset) if (copro) aspeed_gpio_copro_release(gpio, offset); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return 0; } @@ -463,7 +463,7 @@ static int aspeed_gpio_dir_out(struct gpio_chip *gc, if (!have_output(gpio, offset)) return -ENOTSUPP; - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); reg = ioread32(addr); reg |= GPIO_BIT(offset); @@ -474,7 +474,7 @@ static int aspeed_gpio_dir_out(struct gpio_chip *gc, if (copro) aspeed_gpio_copro_release(gpio, offset); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return 0; } @@ -492,11 +492,11 @@ static int aspeed_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) if (!have_output(gpio, offset)) return GPIO_LINE_DIRECTION_IN; - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); val = ioread32(bank_reg(gpio, bank, reg_dir)) & GPIO_BIT(offset); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return val ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN; } @@ -539,14 +539,14 @@ static void aspeed_gpio_irq_ack(struct irq_data *d) status_addr = bank_reg(gpio, bank, reg_irq_status); - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); copro = aspeed_gpio_copro_request(gpio, offset); iowrite32(bit, status_addr); if (copro) aspeed_gpio_copro_release(gpio, offset); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); } static void aspeed_gpio_irq_set_mask(struct irq_data *d, bool set) @@ -565,7 +565,7 @@ static void aspeed_gpio_irq_set_mask(struct irq_data *d, bool set) addr = bank_reg(gpio, bank, reg_irq_enable); - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); copro = aspeed_gpio_copro_request(gpio, offset); reg = ioread32(addr); @@ -577,7 +577,7 @@ static void aspeed_gpio_irq_set_mask(struct irq_data *d, bool set) if (copro) aspeed_gpio_copro_release(gpio, offset); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); } static void aspeed_gpio_irq_mask(struct irq_data *d) @@ -629,7 +629,7 @@ static int aspeed_gpio_set_type(struct irq_data *d, unsigned int type) return -EINVAL; } - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); copro = aspeed_gpio_copro_request(gpio, offset); addr = bank_reg(gpio, bank, reg_irq_type0); @@ -649,7 +649,7 @@ static int aspeed_gpio_set_type(struct irq_data *d, unsigned int type) if (copro) aspeed_gpio_copro_release(gpio, offset); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); irq_set_handler_locked(d, handler); @@ -716,7 +716,7 @@ static int aspeed_gpio_reset_tolerance(struct gpio_chip *chip, treg = bank_reg(gpio, to_bank(offset), reg_tolerance); - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); copro = aspeed_gpio_copro_request(gpio, offset); val = readl(treg); @@ -730,7 +730,7 @@ static int aspeed_gpio_reset_tolerance(struct gpio_chip *chip, if (copro) aspeed_gpio_copro_release(gpio, offset); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return 0; } @@ -856,7 +856,7 @@ static int enable_debounce(struct gpio_chip *chip, unsigned int offset, return rc; } - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); if (timer_allocation_registered(gpio, offset)) { rc = unregister_allocated_timer(gpio, offset); @@ -916,7 +916,7 @@ static int enable_debounce(struct gpio_chip *chip, unsigned int offset, configure_timer(gpio, offset, i); out: - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return rc; } @@ -927,13 +927,13 @@ static int disable_debounce(struct gpio_chip *chip, unsigned int offset) unsigned long flags; int rc; - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); rc = unregister_allocated_timer(gpio, offset); if (!rc) configure_timer(gpio, offset, 0); - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return rc; } @@ -1015,7 +1015,7 @@ int aspeed_gpio_copro_grab_gpio(struct gpio_desc *desc, return -EINVAL; bindex = offset >> 3; - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); /* Sanity check, this shouldn't happen */ if (gpio->cf_copro_bankmap[bindex] == 0xff) { @@ -1036,7 +1036,7 @@ int aspeed_gpio_copro_grab_gpio(struct gpio_desc *desc, if (bit) *bit = GPIO_OFFSET(offset); bail: - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return rc; } EXPORT_SYMBOL_GPL(aspeed_gpio_copro_grab_gpio); @@ -1060,7 +1060,7 @@ int aspeed_gpio_copro_release_gpio(struct gpio_desc *desc) return -EINVAL; bindex = offset >> 3; - spin_lock_irqsave(&gpio->lock, flags); + raw_spin_lock_irqsave(&gpio->lock, flags); /* Sanity check, this shouldn't happen */ if (gpio->cf_copro_bankmap[bindex] == 0) { @@ -1074,7 +1074,7 @@ int aspeed_gpio_copro_release_gpio(struct gpio_desc *desc) aspeed_gpio_change_cmd_source(gpio, bank, bindex, GPIO_CMDSRC_ARM); bail: - spin_unlock_irqrestore(&gpio->lock, flags); + raw_spin_unlock_irqrestore(&gpio->lock, flags); return rc; } EXPORT_SYMBOL_GPL(aspeed_gpio_copro_release_gpio); @@ -1148,7 +1148,7 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev) if (IS_ERR(gpio->base)) return PTR_ERR(gpio->base); - spin_lock_init(&gpio->lock); + raw_spin_lock_init(&gpio->lock); gpio_id = of_match_node(aspeed_gpio_of_table, pdev->dev.of_node); if (!gpio_id) diff --git a/drivers/gpio/gpio-bcm-kona.c b/drivers/gpio/gpio-bcm-kona.c index d329a143f5ec..e84474494429 100644 --- a/drivers/gpio/gpio-bcm-kona.c +++ b/drivers/gpio/gpio-bcm-kona.c @@ -606,7 +606,7 @@ static int bcm_kona_gpio_probe(struct platform_device *pdev) kona_gpio->pdev = pdev; platform_set_drvdata(pdev, kona_gpio); - chip->of_node = dev->of_node; + chip->parent = dev; chip->ngpio = kona_gpio->num_bank * GPIO_PER_BANK; kona_gpio->irq_domain = irq_domain_add_linear(dev->of_node, diff --git a/drivers/gpio/gpio-bd71828.c b/drivers/gpio/gpio-bd71828.c index c8e382b53f2f..b2ccc320c7b5 100644 --- a/drivers/gpio/gpio-bd71828.c +++ b/drivers/gpio/gpio-bd71828.c @@ -121,7 +121,6 @@ static int bd71828_probe(struct platform_device *pdev) * "gpio-reserved-ranges" and exclude them from control */ bdgpio->gpio.ngpio = 4; - bdgpio->gpio.of_node = dev->parent->of_node; bdgpio->regmap = dev_get_regmap(dev->parent, NULL); if (!bdgpio->regmap) return -ENODEV; diff --git a/drivers/gpio/gpio-brcmstb.c b/drivers/gpio/gpio-brcmstb.c index 895a79936248..74ef89248867 100644 --- a/drivers/gpio/gpio-brcmstb.c +++ b/drivers/gpio/gpio-brcmstb.c @@ -703,9 +703,8 @@ static int brcmstb_gpio_probe(struct platform_device *pdev) goto fail; } - gc->of_node = np; gc->owner = THIS_MODULE; - gc->label = devm_kasprintf(dev, GFP_KERNEL, "%pOF", dev->of_node); + gc->label = devm_kasprintf(dev, GFP_KERNEL, "%pOF", np); if (!gc->label) { err = -ENOMEM; goto fail; diff --git a/drivers/gpio/gpio-creg-snps.c b/drivers/gpio/gpio-creg-snps.c index 1d0827e79703..789384c6e178 100644 --- a/drivers/gpio/gpio-creg-snps.c +++ b/drivers/gpio/gpio-creg-snps.c @@ -163,12 +163,12 @@ static int creg_gpio_probe(struct platform_device *pdev) spin_lock_init(&hcg->lock); + hcg->gc.parent = dev; hcg->gc.label = dev_name(dev); hcg->gc.base = -1; hcg->gc.ngpio = ngpios; hcg->gc.set = creg_gpio_set; hcg->gc.direction_output = creg_gpio_dir_out; - hcg->gc.of_node = dev->of_node; ret = devm_gpiochip_add_data(dev, &hcg->gc, hcg); if (ret) diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c index cb5afaa7ed48..f960587f86a3 100644 --- a/drivers/gpio/gpio-davinci.c +++ b/drivers/gpio/gpio-davinci.c @@ -254,7 +254,6 @@ static int davinci_gpio_probe(struct platform_device *pdev) #ifdef CONFIG_OF_GPIO chips->chip.of_gpio_n_cells = 2; chips->chip.parent = dev; - chips->chip.of_node = dev->of_node; chips->chip.request = gpiochip_generic_request; chips->chip.free = gpiochip_generic_free; #endif diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index f98fa33e1679..b0f3aca61974 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -15,7 +15,6 @@ #include <linux/irq.h> #include <linux/mod_devicetable.h> #include <linux/module.h> -#include <linux/of.h> #include <linux/platform_device.h> #include <linux/property.h> #include <linux/reset.h> @@ -53,7 +52,9 @@ #define GPIO_SWPORT_DR_STRIDE 0x0c /* register stride 3*32 bits */ #define GPIO_SWPORT_DDR_STRIDE 0x0c /* register stride 3*32 bits */ +#define GPIO_REG_OFFSET_V1 0 #define GPIO_REG_OFFSET_V2 1 +#define GPIO_REG_OFFSET_MASK BIT(0) #define GPIO_INTMASK_V2 0x44 #define GPIO_INTTYPE_LEVEL_V2 0x34 @@ -141,7 +142,7 @@ static inline u32 gpio_reg_v2_convert(unsigned int offset) static inline u32 gpio_reg_convert(struct dwapb_gpio *gpio, unsigned int offset) { - if (gpio->flags & GPIO_REG_OFFSET_V2) + if ((gpio->flags & GPIO_REG_OFFSET_MASK) == GPIO_REG_OFFSET_V2) return gpio_reg_v2_convert(offset); return offset; @@ -513,9 +514,7 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio, return err; } -#ifdef CONFIG_OF_GPIO - port->gc.of_node = to_of_node(pp->fwnode); -#endif + port->gc.fwnode = pp->fwnode; port->gc.ngpio = pp->ngpio; port->gc.base = pp->gpio_base; @@ -668,15 +667,15 @@ static int dwapb_get_clks(struct dwapb_gpio *gpio) } static const struct of_device_id dwapb_of_match[] = { - { .compatible = "snps,dw-apb-gpio", .data = (void *)0}, + { .compatible = "snps,dw-apb-gpio", .data = (void *)GPIO_REG_OFFSET_V1}, { .compatible = "apm,xgene-gpio-v2", .data = (void *)GPIO_REG_OFFSET_V2}, { /* Sentinel */ } }; MODULE_DEVICE_TABLE(of, dwapb_of_match); static const struct acpi_device_id dwapb_acpi_match[] = { - {"HISI0181", 0}, - {"APMC0D07", 0}, + {"HISI0181", GPIO_REG_OFFSET_V1}, + {"APMC0D07", GPIO_REG_OFFSET_V1}, {"APMC0D81", GPIO_REG_OFFSET_V2}, { } }; diff --git a/drivers/gpio/gpio-eic-sprd.c b/drivers/gpio/gpio-eic-sprd.c index 865ab2b34fdd..8d722e026e9c 100644 --- a/drivers/gpio/gpio-eic-sprd.c +++ b/drivers/gpio/gpio-eic-sprd.c @@ -609,7 +609,6 @@ static int sprd_eic_probe(struct platform_device *pdev) sprd_eic->chip.ngpio = pdata->num_eics; sprd_eic->chip.base = -1; sprd_eic->chip.parent = &pdev->dev; - sprd_eic->chip.of_node = pdev->dev.of_node; sprd_eic->chip.direction_input = sprd_eic_direction_input; switch (sprd_eic->type) { case SPRD_EIC_DEBOUNCE: diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c index 90b336e6ee27..858e6ebbb584 100644 --- a/drivers/gpio/gpio-em.c +++ b/drivers/gpio/gpio-em.c @@ -306,7 +306,6 @@ static int em_gio_probe(struct platform_device *pdev) } gpio_chip = &p->gpio_chip; - gpio_chip->of_node = dev->of_node; gpio_chip->direction_input = em_gio_direction_input; gpio_chip->get = em_gio_get; gpio_chip->direction_output = em_gio_direction_output; diff --git a/drivers/gpio/gpio-ge.c b/drivers/gpio/gpio-ge.c index 636952769bc8..f6a3de99f7db 100644 --- a/drivers/gpio/gpio-ge.c +++ b/drivers/gpio/gpio-ge.c @@ -82,7 +82,6 @@ static int __init gef_gpio_probe(struct platform_device *pdev) gc->base = -1; gc->ngpio = (u16)(uintptr_t)of_device_get_match_data(&pdev->dev); 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); diff --git a/drivers/gpio/gpio-grgpio.c b/drivers/gpio/gpio-grgpio.c index f954359c9544..23d447e17a67 100644 --- a/drivers/gpio/gpio-grgpio.c +++ b/drivers/gpio/gpio-grgpio.c @@ -358,7 +358,6 @@ static int grgpio_probe(struct platform_device *ofdev) priv->imask = gc->read_reg(regs + GRGPIO_IMASK); priv->dev = &ofdev->dev; - gc->of_node = np; gc->owner = THIS_MODULE; gc->to_irq = grgpio_to_irq; gc->label = devm_kasprintf(&ofdev->dev, GFP_KERNEL, "%pOF", np); diff --git a/drivers/gpio/gpio-gw-pld.c b/drivers/gpio/gpio-gw-pld.c index 242112ff60ee..2109803ffb38 100644 --- a/drivers/gpio/gpio-gw-pld.c +++ b/drivers/gpio/gpio-gw-pld.c @@ -71,7 +71,6 @@ static int gw_pld_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; - struct device_node *np = dev->of_node; struct gw_pld *gw; int ret; @@ -82,7 +81,6 @@ static int gw_pld_probe(struct i2c_client *client, gw->chip.base = -1; gw->chip.can_sleep = true; gw->chip.parent = dev; - gw->chip.of_node = np; gw->chip.owner = THIS_MODULE; gw->chip.label = dev_name(dev); gw->chip.ngpio = 8; diff --git a/drivers/gpio/gpio-lpc32xx.c b/drivers/gpio/gpio-lpc32xx.c index 4e626c4235c2..d2b65cfb336e 100644 --- a/drivers/gpio/gpio-lpc32xx.c +++ b/drivers/gpio/gpio-lpc32xx.c @@ -512,10 +512,10 @@ static int lpc32xx_gpio_probe(struct platform_device *pdev) return PTR_ERR(reg_base); for (i = 0; i < ARRAY_SIZE(lpc32xx_gpiochip); i++) { + lpc32xx_gpiochip[i].chip.parent = &pdev->dev; if (pdev->dev.of_node) { lpc32xx_gpiochip[i].chip.of_xlate = lpc32xx_of_xlate; lpc32xx_gpiochip[i].chip.of_gpio_n_cells = 3; - lpc32xx_gpiochip[i].chip.of_node = pdev->dev.of_node; lpc32xx_gpiochip[i].reg_base = reg_base; } devm_gpiochip_add_data(&pdev->dev, &lpc32xx_gpiochip[i].chip, diff --git a/drivers/gpio/gpio-max3191x.c b/drivers/gpio/gpio-max3191x.c index 310d1a248cae..51cd6f98d1c7 100644 --- a/drivers/gpio/gpio-max3191x.c +++ b/drivers/gpio/gpio-max3191x.c @@ -326,7 +326,7 @@ static void gpiod_set_array_single_value_cansleep(unsigned int ndescs, bitmap_zero(values, ndescs); gpiod_set_array_value_cansleep(ndescs, desc, info, values); - kfree(values); + bitmap_free(values); } static struct gpio_descs *devm_gpiod_get_array_optional_count( diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c index efa9acdc320a..b060c4773698 100644 --- a/drivers/gpio/gpio-ml-ioh.c +++ b/drivers/gpio/gpio-ml-ioh.c @@ -98,9 +98,9 @@ static void ioh_gpio_set(struct gpio_chip *gpio, unsigned nr, int val) spin_lock_irqsave(&chip->spinlock, flags); reg_val = ioread32(&chip->reg->regs[chip->ch].po); if (val) - reg_val |= (1 << nr); + reg_val |= BIT(nr); else - reg_val &= ~(1 << nr); + reg_val &= ~BIT(nr); iowrite32(reg_val, &chip->reg->regs[chip->ch].po); spin_unlock_irqrestore(&chip->spinlock, flags); @@ -110,7 +110,7 @@ static int ioh_gpio_get(struct gpio_chip *gpio, unsigned nr) { struct ioh_gpio *chip = gpiochip_get_data(gpio); - return !!(ioread32(&chip->reg->regs[chip->ch].pi) & (1 << nr)); + return !!(ioread32(&chip->reg->regs[chip->ch].pi) & BIT(nr)); } static int ioh_gpio_direction_output(struct gpio_chip *gpio, unsigned nr, @@ -122,16 +122,16 @@ static int ioh_gpio_direction_output(struct gpio_chip *gpio, unsigned nr, unsigned long flags; spin_lock_irqsave(&chip->spinlock, flags); - pm = ioread32(&chip->reg->regs[chip->ch].pm) & - ((1 << num_ports[chip->ch]) - 1); - pm |= (1 << nr); + pm = ioread32(&chip->reg->regs[chip->ch].pm); + pm &= BIT(num_ports[chip->ch]) - 1; + pm |= BIT(nr); iowrite32(pm, &chip->reg->regs[chip->ch].pm); reg_val = ioread32(&chip->reg->regs[chip->ch].po); if (val) - reg_val |= (1 << nr); + reg_val |= BIT(nr); else - reg_val &= ~(1 << nr); + reg_val &= ~BIT(nr); iowrite32(reg_val, &chip->reg->regs[chip->ch].po); spin_unlock_irqrestore(&chip->spinlock, flags); @@ -146,9 +146,9 @@ static int ioh_gpio_direction_input(struct gpio_chip *gpio, unsigned nr) unsigned long flags; spin_lock_irqsave(&chip->spinlock, flags); - pm = ioread32(&chip->reg->regs[chip->ch].pm) & - ((1 << num_ports[chip->ch]) - 1); - pm &= ~(1 << nr); + pm = ioread32(&chip->reg->regs[chip->ch].pm); + pm &= BIT(num_ports[chip->ch]) - 1; + pm &= ~BIT(nr); iowrite32(pm, &chip->reg->regs[chip->ch].pm); spin_unlock_irqrestore(&chip->spinlock, flags); @@ -304,7 +304,7 @@ static void ioh_irq_unmask(struct irq_data *d) struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct ioh_gpio *chip = gc->private; - iowrite32(1 << (d->irq - chip->irq_base), + iowrite32(BIT(d->irq - chip->irq_base), &chip->reg->regs[chip->ch].imaskclr); } @@ -313,7 +313,7 @@ static void ioh_irq_mask(struct irq_data *d) struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct ioh_gpio *chip = gc->private; - iowrite32(1 << (d->irq - chip->irq_base), + iowrite32(BIT(d->irq - chip->irq_base), &chip->reg->regs[chip->ch].imask); } @@ -326,7 +326,7 @@ static void ioh_irq_disable(struct irq_data *d) spin_lock_irqsave(&chip->spinlock, flags); ien = ioread32(&chip->reg->regs[chip->ch].ien); - ien &= ~(1 << (d->irq - chip->irq_base)); + ien &= ~BIT(d->irq - chip->irq_base); iowrite32(ien, &chip->reg->regs[chip->ch].ien); spin_unlock_irqrestore(&chip->spinlock, flags); } @@ -340,7 +340,7 @@ static void ioh_irq_enable(struct irq_data *d) spin_lock_irqsave(&chip->spinlock, flags); ien = ioread32(&chip->reg->regs[chip->ch].ien); - ien |= 1 << (d->irq - chip->irq_base); + ien |= BIT(d->irq - chip->irq_base); iowrite32(ien, &chip->reg->regs[chip->ch].ien); spin_unlock_irqrestore(&chip->spinlock, flags); } @@ -401,6 +401,7 @@ static int ioh_gpio_alloc_generic_chip(struct ioh_gpio *chip, static int ioh_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id) { + struct device *dev = &pdev->dev; int ret; int i, j; struct ioh_gpio *chip; @@ -410,19 +411,19 @@ static int ioh_gpio_probe(struct pci_dev *pdev, ret = pci_enable_device(pdev); if (ret) { - dev_err(&pdev->dev, "%s : pci_enable_device failed", __func__); + dev_err(dev, "%s : pci_enable_device failed", __func__); goto err_pci_enable; } ret = pci_request_regions(pdev, KBUILD_MODNAME); if (ret) { - dev_err(&pdev->dev, "pci_request_regions failed-%d", ret); + dev_err(dev, "pci_request_regions failed-%d", ret); goto err_request_regions; } base = pci_iomap(pdev, 1, 0); if (!base) { - dev_err(&pdev->dev, "%s : pci_iomap failed", __func__); + dev_err(dev, "%s : pci_iomap failed", __func__); ret = -ENOMEM; goto err_iomap; } @@ -435,7 +436,7 @@ static int ioh_gpio_probe(struct pci_dev *pdev, chip = chip_save; for (i = 0; i < 8; i++, chip++) { - chip->dev = &pdev->dev; + chip->dev = dev; chip->base = base; chip->reg = chip->base; chip->ch = i; @@ -443,17 +444,17 @@ static int ioh_gpio_probe(struct pci_dev *pdev, ioh_gpio_setup(chip, num_ports[i]); ret = gpiochip_add_data(&chip->gpio, chip); if (ret) { - dev_err(&pdev->dev, "IOH gpio: Failed to register GPIO\n"); + dev_err(dev, "IOH gpio: Failed to register GPIO\n"); goto err_gpiochip_add; } } chip = chip_save; for (j = 0; j < 8; j++, chip++) { - irq_base = devm_irq_alloc_descs(&pdev->dev, -1, IOH_IRQ_BASE, + irq_base = devm_irq_alloc_descs(dev, -1, IOH_IRQ_BASE, num_ports[j], NUMA_NO_NODE); if (irq_base < 0) { - dev_warn(&pdev->dev, + dev_warn(dev, "ml_ioh_gpio: Failed to get IRQ base num\n"); ret = irq_base; goto err_gpiochip_add; @@ -467,11 +468,10 @@ static int ioh_gpio_probe(struct pci_dev *pdev, } chip = chip_save; - ret = devm_request_irq(&pdev->dev, pdev->irq, ioh_gpio_handler, + ret = devm_request_irq(dev, pdev->irq, ioh_gpio_handler, IRQF_SHARED, KBUILD_MODNAME, chip); if (ret != 0) { - dev_err(&pdev->dev, - "%s request_irq failed\n", __func__); + dev_err(dev, "%s request_irq failed\n", __func__); goto err_gpiochip_add; } @@ -498,7 +498,7 @@ err_request_regions: err_pci_enable: - dev_err(&pdev->dev, "%s Failed returns %d\n", __func__, ret); + dev_err(dev, "%s Failed returns %d\n", __func__, ret); return ret; } diff --git a/drivers/gpio/gpio-msc313.c b/drivers/gpio/gpio-msc313.c index da31a5ff7a2b..b2c90bdd39d0 100644 --- a/drivers/gpio/gpio-msc313.c +++ b/drivers/gpio/gpio-msc313.c @@ -221,6 +221,263 @@ static const unsigned int msc313_offsets[] = { }; MSC313_GPIO_CHIPDATA(msc313); + +/* + * Unlike the msc313(e) the ssd20xd have a bunch of pins + * that are actually called gpio probably because they + * have no dedicated function. + */ +#define SSD20XD_PINNAME_GPIO0 "gpio0" +#define SSD20XD_PINNAME_GPIO1 "gpio1" +#define SSD20XD_PINNAME_GPIO2 "gpio2" +#define SSD20XD_PINNAME_GPIO3 "gpio3" +#define SSD20XD_PINNAME_GPIO4 "gpio4" +#define SSD20XD_PINNAME_GPIO5 "gpio5" +#define SSD20XD_PINNAME_GPIO6 "gpio6" +#define SSD20XD_PINNAME_GPIO7 "gpio7" +#define SSD20XD_PINNAME_GPIO10 "gpio10" +#define SSD20XD_PINNAME_GPIO11 "gpio11" +#define SSD20XD_PINNAME_GPIO12 "gpio12" +#define SSD20XD_PINNAME_GPIO13 "gpio13" +#define SSD20XD_PINNAME_GPIO14 "gpio14" +#define SSD20XD_PINNAME_GPIO85 "gpio85" +#define SSD20XD_PINNAME_GPIO86 "gpio86" +#define SSD20XD_PINNAME_GPIO90 "gpio90" + +#define SSD20XD_GPIO_NAMES SSD20XD_PINNAME_GPIO0, \ + SSD20XD_PINNAME_GPIO1, \ + SSD20XD_PINNAME_GPIO2, \ + SSD20XD_PINNAME_GPIO3, \ + SSD20XD_PINNAME_GPIO4, \ + SSD20XD_PINNAME_GPIO5, \ + SSD20XD_PINNAME_GPIO6, \ + SSD20XD_PINNAME_GPIO7, \ + SSD20XD_PINNAME_GPIO10, \ + SSD20XD_PINNAME_GPIO11, \ + SSD20XD_PINNAME_GPIO12, \ + SSD20XD_PINNAME_GPIO13, \ + SSD20XD_PINNAME_GPIO14, \ + SSD20XD_PINNAME_GPIO85, \ + SSD20XD_PINNAME_GPIO86, \ + SSD20XD_PINNAME_GPIO90 + +#define SSD20XD_GPIO_OFF_GPIO0 0x0 +#define SSD20XD_GPIO_OFF_GPIO1 0x4 +#define SSD20XD_GPIO_OFF_GPIO2 0x8 +#define SSD20XD_GPIO_OFF_GPIO3 0xc +#define SSD20XD_GPIO_OFF_GPIO4 0x10 +#define SSD20XD_GPIO_OFF_GPIO5 0x14 +#define SSD20XD_GPIO_OFF_GPIO6 0x18 +#define SSD20XD_GPIO_OFF_GPIO7 0x1c +#define SSD20XD_GPIO_OFF_GPIO10 0x28 +#define SSD20XD_GPIO_OFF_GPIO11 0x2c +#define SSD20XD_GPIO_OFF_GPIO12 0x30 +#define SSD20XD_GPIO_OFF_GPIO13 0x34 +#define SSD20XD_GPIO_OFF_GPIO14 0x38 +#define SSD20XD_GPIO_OFF_GPIO85 0x100 +#define SSD20XD_GPIO_OFF_GPIO86 0x104 +#define SSD20XD_GPIO_OFF_GPIO90 0x114 + +#define SSD20XD_GPIO_OFFSETS SSD20XD_GPIO_OFF_GPIO0, \ + SSD20XD_GPIO_OFF_GPIO1, \ + SSD20XD_GPIO_OFF_GPIO2, \ + SSD20XD_GPIO_OFF_GPIO3, \ + SSD20XD_GPIO_OFF_GPIO4, \ + SSD20XD_GPIO_OFF_GPIO5, \ + SSD20XD_GPIO_OFF_GPIO6, \ + SSD20XD_GPIO_OFF_GPIO7, \ + SSD20XD_GPIO_OFF_GPIO10, \ + SSD20XD_GPIO_OFF_GPIO11, \ + SSD20XD_GPIO_OFF_GPIO12, \ + SSD20XD_GPIO_OFF_GPIO13, \ + SSD20XD_GPIO_OFF_GPIO14, \ + SSD20XD_GPIO_OFF_GPIO85, \ + SSD20XD_GPIO_OFF_GPIO86, \ + SSD20XD_GPIO_OFF_GPIO90 + +/* "ttl" pins lcd interface pins */ +#define SSD20XD_PINNAME_TTL0 "ttl0" +#define SSD20XD_PINNAME_TTL1 "ttl1" +#define SSD20XD_PINNAME_TTL2 "ttl2" +#define SSD20XD_PINNAME_TTL3 "ttl3" +#define SSD20XD_PINNAME_TTL4 "ttl4" +#define SSD20XD_PINNAME_TTL5 "ttl5" +#define SSD20XD_PINNAME_TTL6 "ttl6" +#define SSD20XD_PINNAME_TTL7 "ttl7" +#define SSD20XD_PINNAME_TTL8 "ttl8" +#define SSD20XD_PINNAME_TTL9 "ttl9" +#define SSD20XD_PINNAME_TTL10 "ttl10" +#define SSD20XD_PINNAME_TTL11 "ttl11" +#define SSD20XD_PINNAME_TTL12 "ttl12" +#define SSD20XD_PINNAME_TTL13 "ttl13" +#define SSD20XD_PINNAME_TTL14 "ttl14" +#define SSD20XD_PINNAME_TTL15 "ttl15" +#define SSD20XD_PINNAME_TTL16 "ttl16" +#define SSD20XD_PINNAME_TTL17 "ttl17" +#define SSD20XD_PINNAME_TTL18 "ttl18" +#define SSD20XD_PINNAME_TTL19 "ttl19" +#define SSD20XD_PINNAME_TTL20 "ttl20" +#define SSD20XD_PINNAME_TTL21 "ttl21" +#define SSD20XD_PINNAME_TTL22 "ttl22" +#define SSD20XD_PINNAME_TTL23 "ttl23" +#define SSD20XD_PINNAME_TTL24 "ttl24" +#define SSD20XD_PINNAME_TTL25 "ttl25" +#define SSD20XD_PINNAME_TTL26 "ttl26" +#define SSD20XD_PINNAME_TTL27 "ttl27" + +#define SSD20XD_TTL_PINNAMES SSD20XD_PINNAME_TTL0, \ + SSD20XD_PINNAME_TTL1, \ + SSD20XD_PINNAME_TTL2, \ + SSD20XD_PINNAME_TTL3, \ + SSD20XD_PINNAME_TTL4, \ + SSD20XD_PINNAME_TTL5, \ + SSD20XD_PINNAME_TTL6, \ + SSD20XD_PINNAME_TTL7, \ + SSD20XD_PINNAME_TTL8, \ + SSD20XD_PINNAME_TTL9, \ + SSD20XD_PINNAME_TTL10, \ + SSD20XD_PINNAME_TTL11, \ + SSD20XD_PINNAME_TTL12, \ + SSD20XD_PINNAME_TTL13, \ + SSD20XD_PINNAME_TTL14, \ + SSD20XD_PINNAME_TTL15, \ + SSD20XD_PINNAME_TTL16, \ + SSD20XD_PINNAME_TTL17, \ + SSD20XD_PINNAME_TTL18, \ + SSD20XD_PINNAME_TTL19, \ + SSD20XD_PINNAME_TTL20, \ + SSD20XD_PINNAME_TTL21, \ + SSD20XD_PINNAME_TTL22, \ + SSD20XD_PINNAME_TTL23, \ + SSD20XD_PINNAME_TTL24, \ + SSD20XD_PINNAME_TTL25, \ + SSD20XD_PINNAME_TTL26, \ + SSD20XD_PINNAME_TTL27 + +#define SSD20XD_TTL_OFFSET_TTL0 0x80 +#define SSD20XD_TTL_OFFSET_TTL1 0x84 +#define SSD20XD_TTL_OFFSET_TTL2 0x88 +#define SSD20XD_TTL_OFFSET_TTL3 0x8c +#define SSD20XD_TTL_OFFSET_TTL4 0x90 +#define SSD20XD_TTL_OFFSET_TTL5 0x94 +#define SSD20XD_TTL_OFFSET_TTL6 0x98 +#define SSD20XD_TTL_OFFSET_TTL7 0x9c +#define SSD20XD_TTL_OFFSET_TTL8 0xa0 +#define SSD20XD_TTL_OFFSET_TTL9 0xa4 +#define SSD20XD_TTL_OFFSET_TTL10 0xa8 +#define SSD20XD_TTL_OFFSET_TTL11 0xac +#define SSD20XD_TTL_OFFSET_TTL12 0xb0 +#define SSD20XD_TTL_OFFSET_TTL13 0xb4 +#define SSD20XD_TTL_OFFSET_TTL14 0xb8 +#define SSD20XD_TTL_OFFSET_TTL15 0xbc +#define SSD20XD_TTL_OFFSET_TTL16 0xc0 +#define SSD20XD_TTL_OFFSET_TTL17 0xc4 +#define SSD20XD_TTL_OFFSET_TTL18 0xc8 +#define SSD20XD_TTL_OFFSET_TTL19 0xcc +#define SSD20XD_TTL_OFFSET_TTL20 0xd0 +#define SSD20XD_TTL_OFFSET_TTL21 0xd4 +#define SSD20XD_TTL_OFFSET_TTL22 0xd8 +#define SSD20XD_TTL_OFFSET_TTL23 0xdc +#define SSD20XD_TTL_OFFSET_TTL24 0xe0 +#define SSD20XD_TTL_OFFSET_TTL25 0xe4 +#define SSD20XD_TTL_OFFSET_TTL26 0xe8 +#define SSD20XD_TTL_OFFSET_TTL27 0xec + +#define SSD20XD_TTL_OFFSETS SSD20XD_TTL_OFFSET_TTL0, \ + SSD20XD_TTL_OFFSET_TTL1, \ + SSD20XD_TTL_OFFSET_TTL2, \ + SSD20XD_TTL_OFFSET_TTL3, \ + SSD20XD_TTL_OFFSET_TTL4, \ + SSD20XD_TTL_OFFSET_TTL5, \ + SSD20XD_TTL_OFFSET_TTL6, \ + SSD20XD_TTL_OFFSET_TTL7, \ + SSD20XD_TTL_OFFSET_TTL8, \ + SSD20XD_TTL_OFFSET_TTL9, \ + SSD20XD_TTL_OFFSET_TTL10, \ + SSD20XD_TTL_OFFSET_TTL11, \ + SSD20XD_TTL_OFFSET_TTL12, \ + SSD20XD_TTL_OFFSET_TTL13, \ + SSD20XD_TTL_OFFSET_TTL14, \ + SSD20XD_TTL_OFFSET_TTL15, \ + SSD20XD_TTL_OFFSET_TTL16, \ + SSD20XD_TTL_OFFSET_TTL17, \ + SSD20XD_TTL_OFFSET_TTL18, \ + SSD20XD_TTL_OFFSET_TTL19, \ + SSD20XD_TTL_OFFSET_TTL20, \ + SSD20XD_TTL_OFFSET_TTL21, \ + SSD20XD_TTL_OFFSET_TTL22, \ + SSD20XD_TTL_OFFSET_TTL23, \ + SSD20XD_TTL_OFFSET_TTL24, \ + SSD20XD_TTL_OFFSET_TTL25, \ + SSD20XD_TTL_OFFSET_TTL26, \ + SSD20XD_TTL_OFFSET_TTL27 + +/* On the ssd20xd the two normal uarts have dedicated pins */ +#define SSD20XD_PINNAME_UART0_RX "uart0_rx" +#define SSD20XD_PINNAME_UART0_TX "uart0_tx" + +#define SSD20XD_UART0_NAMES \ + SSD20XD_PINNAME_UART0_RX, \ + SSD20XD_PINNAME_UART0_TX + +#define SSD20XD_PINNAME_UART1_RX "uart1_rx" +#define SSD20XD_PINNAME_UART1_TX "uart1_tx" + +#define SSD20XD_UART1_NAMES \ + SSD20XD_PINNAME_UART1_RX, \ + SSD20XD_PINNAME_UART1_TX + +#define SSD20XD_OFF_UART0_RX 0x60 +#define SSD20XD_OFF_UART0_TX 0x64 + +#define SSD20XD_UART0_OFFSETS \ + SSD20XD_OFF_UART0_RX, \ + SSD20XD_OFF_UART0_TX + +#define SSD20XD_OFF_UART1_RX 0x68 +#define SSD20XD_OFF_UART1_TX 0x6c + +#define SSD20XD_UART1_OFFSETS \ + SSD20XD_OFF_UART1_RX, \ + SSD20XD_OFF_UART1_TX + +/* + * ssd20x has the same pin names but different ordering + * of the registers that control the gpio. + */ +#define SSD20XD_OFF_SD_D0 0x140 +#define SSD20XD_OFF_SD_D1 0x144 +#define SSD20XD_OFF_SD_D2 0x148 +#define SSD20XD_OFF_SD_D3 0x14c +#define SSD20XD_OFF_SD_CMD 0x150 +#define SSD20XD_OFF_SD_CLK 0x154 + +#define SSD20XD_SD_OFFSETS SSD20XD_OFF_SD_CLK, \ + SSD20XD_OFF_SD_CMD, \ + SSD20XD_OFF_SD_D0, \ + SSD20XD_OFF_SD_D1, \ + SSD20XD_OFF_SD_D2, \ + SSD20XD_OFF_SD_D3 + +static const char * const ssd20xd_names[] = { + FUART_NAMES, + SD_NAMES, + SSD20XD_UART0_NAMES, + SSD20XD_UART1_NAMES, + SSD20XD_TTL_PINNAMES, + SSD20XD_GPIO_NAMES, +}; + +static const unsigned int ssd20xd_offsets[] = { + FUART_OFFSETS, + SSD20XD_SD_OFFSETS, + SSD20XD_UART0_OFFSETS, + SSD20XD_UART1_OFFSETS, + SSD20XD_TTL_OFFSETS, + SSD20XD_GPIO_OFFSETS, +}; + +MSC313_GPIO_CHIPDATA(ssd20xd); #endif struct msc313_gpio { @@ -344,7 +601,6 @@ static int msc313_gpio_probe(struct platform_device *pdev) struct irq_domain *parent_domain; struct device_node *parent_node; struct device *dev = &pdev->dev; - int ret; match_data = of_device_get_match_data(dev); if (!match_data) @@ -399,8 +655,7 @@ static int msc313_gpio_probe(struct platform_device *pdev) gpioirqchip->handler = handle_bad_irq; gpioirqchip->default_type = IRQ_TYPE_NONE; - ret = devm_gpiochip_add_data(dev, gpiochip, gpio); - return ret; + return devm_gpiochip_add_data(dev, gpiochip, gpio); } static int msc313_gpio_remove(struct platform_device *pdev) @@ -414,6 +669,10 @@ static const struct of_device_id msc313_gpio_of_match[] = { .compatible = "mstar,msc313-gpio", .data = &msc313_data, }, + { + .compatible = "sstar,ssd20xd-gpio", + .data = &ssd20xd_data, + }, #endif { } }; @@ -456,5 +715,4 @@ static struct platform_driver msc313_gpio_driver = { .probe = msc313_gpio_probe, .remove = msc313_gpio_remove, }; - builtin_platform_driver(msc313_gpio_driver); diff --git a/drivers/gpio/gpio-mt7621.c b/drivers/gpio/gpio-mt7621.c index c3658a597a80..ccaad1cb3c2e 100644 --- a/drivers/gpio/gpio-mt7621.c +++ b/drivers/gpio/gpio-mt7621.c @@ -205,8 +205,7 @@ mediatek_gpio_xlate(struct gpio_chip *chip, } static int -mediatek_gpio_bank_probe(struct device *dev, - struct device_node *node, int bank) +mediatek_gpio_bank_probe(struct device *dev, int bank) { struct mtk *mtk = dev_get_drvdata(dev); struct mtk_gc *rg; @@ -217,7 +216,6 @@ mediatek_gpio_bank_probe(struct device *dev, memset(rg, 0, sizeof(*rg)); spin_lock_init(&rg->lock); - rg->chip.of_node = node; rg->bank = bank; dat = mtk->base + GPIO_REG_DATA + (rg->bank * GPIO_BANK_STRIDE); @@ -311,7 +309,7 @@ mediatek_gpio_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mtk); for (i = 0; i < MTK_BANK_CNT; i++) { - ret = mediatek_gpio_bank_probe(dev, np, i); + ret = mediatek_gpio_bank_probe(dev, i); if (ret) return ret; } diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c index 8f429d9f3661..4c1f9e1091b7 100644 --- a/drivers/gpio/gpio-mvebu.c +++ b/drivers/gpio/gpio-mvebu.c @@ -1183,7 +1183,6 @@ static int mvebu_gpio_probe(struct platform_device *pdev) mvchip->chip.base = id * MVEBU_MAX_GPIO_PER_BANK; mvchip->chip.ngpio = ngpios; mvchip->chip.can_sleep = false; - mvchip->chip.of_node = np; mvchip->chip.dbg_show = mvebu_gpio_dbg_show; if (soc_variant == MVEBU_GPIO_SOC_VARIANT_A8K) diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 415e8df89d6f..e099c39e0355 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -1419,9 +1419,6 @@ static int omap_gpio_probe(struct platform_device *pdev) bank->is_mpuio = pdata->is_mpuio; bank->non_wakeup_gpios = pdata->non_wakeup_gpios; bank->regs = pdata->regs; -#ifdef CONFIG_OF_GPIO - bank->chip.of_node = of_node_get(node); -#endif if (node) { if (!of_property_read_bool(node, "ti,gpio-always-on")) diff --git a/drivers/gpio/gpio-palmas.c b/drivers/gpio/gpio-palmas.c index e8e9029ba5bd..bac10c2faf56 100644 --- a/drivers/gpio/gpio-palmas.c +++ b/drivers/gpio/gpio-palmas.c @@ -170,9 +170,7 @@ static int palmas_gpio_probe(struct platform_device *pdev) palmas_gpio->gpio_chip.set = palmas_gpio_set; palmas_gpio->gpio_chip.get = palmas_gpio_get; palmas_gpio->gpio_chip.parent = &pdev->dev; -#ifdef CONFIG_OF_GPIO - palmas_gpio->gpio_chip.of_node = pdev->dev.of_node; -#endif + palmas_pdata = dev_get_platdata(palmas->dev); if (palmas_pdata && palmas_pdata->gpio_base) palmas_gpio->gpio_chip.base = palmas_pdata->gpio_base; diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c index a552df298a97..3a0bd8795741 100644 --- a/drivers/gpio/gpio-pch.c +++ b/drivers/gpio/gpio-pch.c @@ -346,51 +346,45 @@ static int pch_gpio_alloc_generic_chip(struct pch_gpio *chip, static int pch_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id) { + struct device *dev = &pdev->dev; s32 ret; struct pch_gpio *chip; int irq_base; - chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); + chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); if (chip == NULL) return -ENOMEM; - chip->dev = &pdev->dev; + chip->dev = dev; ret = pcim_enable_device(pdev); if (ret) { - dev_err(&pdev->dev, "pci_enable_device FAILED"); + dev_err(dev, "pci_enable_device FAILED"); return ret; } ret = pcim_iomap_regions(pdev, BIT(1), KBUILD_MODNAME); if (ret) { - dev_err(&pdev->dev, "pci_request_regions FAILED-%d", ret); + dev_err(dev, "pci_request_regions FAILED-%d", ret); return ret; } chip->base = pcim_iomap_table(pdev)[1]; - - if (pdev->device == 0x8803) - chip->ioh = INTEL_EG20T_PCH; - else if (pdev->device == 0x8014) - chip->ioh = OKISEMI_ML7223m_IOH; - else if (pdev->device == 0x8043) - chip->ioh = OKISEMI_ML7223n_IOH; - + chip->ioh = id->driver_data; chip->reg = chip->base; pci_set_drvdata(pdev, chip); spin_lock_init(&chip->spinlock); pch_gpio_setup(chip); - ret = devm_gpiochip_add_data(&pdev->dev, &chip->gpio, chip); + ret = devm_gpiochip_add_data(dev, &chip->gpio, chip); if (ret) { - dev_err(&pdev->dev, "PCH gpio: Failed to register GPIO\n"); + dev_err(dev, "PCH gpio: Failed to register GPIO\n"); return ret; } - irq_base = devm_irq_alloc_descs(&pdev->dev, -1, 0, + irq_base = devm_irq_alloc_descs(dev, -1, 0, gpio_pins[chip->ioh], NUMA_NO_NODE); if (irq_base < 0) { - dev_warn(&pdev->dev, "PCH gpio: Failed to get IRQ base num\n"); + dev_warn(dev, "PCH gpio: Failed to get IRQ base num\n"); chip->irq_base = -1; return 0; } @@ -400,10 +394,10 @@ static int pch_gpio_probe(struct pci_dev *pdev, iowrite32(BIT(gpio_pins[chip->ioh]) - 1, &chip->reg->imask); iowrite32(BIT(gpio_pins[chip->ioh]) - 1, &chip->reg->ien); - ret = devm_request_irq(&pdev->dev, pdev->irq, pch_gpio_handler, + ret = devm_request_irq(dev, pdev->irq, pch_gpio_handler, IRQF_SHARED, KBUILD_MODNAME, chip); if (ret) { - dev_err(&pdev->dev, "request_irq failed\n"); + dev_err(dev, "request_irq failed\n"); return ret; } @@ -439,10 +433,14 @@ static int __maybe_unused pch_gpio_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(pch_gpio_pm_ops, pch_gpio_suspend, pch_gpio_resume); static const struct pci_device_id pch_gpio_pcidev_id[] = { - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8803) }, - { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8014) }, - { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8043) }, - { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8803) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8803), + .driver_data = INTEL_EG20T_PCH }, + { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8014), + .driver_data = OKISEMI_ML7223m_IOH }, + { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8043), + .driver_data = OKISEMI_ML7223n_IOH }, + { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8803), + .driver_data = INTEL_EG20T_PCH }, { 0, } }; MODULE_DEVICE_TABLE(pci, pch_gpio_pcidev_id); diff --git a/drivers/gpio/gpio-pmic-eic-sprd.c b/drivers/gpio/gpio-pmic-eic-sprd.c index 938285190566..e518490c4b68 100644 --- a/drivers/gpio/gpio-pmic-eic-sprd.c +++ b/drivers/gpio/gpio-pmic-eic-sprd.c @@ -331,7 +331,6 @@ static int sprd_pmic_eic_probe(struct platform_device *pdev) pmic_eic->chip.ngpio = SPRD_PMIC_EIC_NR; pmic_eic->chip.base = -1; pmic_eic->chip.parent = &pdev->dev; - pmic_eic->chip.of_node = pdev->dev.of_node; pmic_eic->chip.direction_input = sprd_pmic_eic_direction_input; pmic_eic->chip.request = sprd_pmic_eic_request; pmic_eic->chip.free = sprd_pmic_eic_free; diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c index 382468e294e1..c7fbfa3ae43b 100644 --- a/drivers/gpio/gpio-pxa.c +++ b/drivers/gpio/gpio-pxa.c @@ -343,8 +343,7 @@ static int pxa_gpio_of_xlate(struct gpio_chip *gc, } #endif -static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio, - struct device_node *np, void __iomem *regbase) +static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio, void __iomem *regbase) { int i, gpio, nbanks = DIV_ROUND_UP(ngpio, 32); struct pxa_gpio_bank *bank; @@ -354,6 +353,7 @@ static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio, if (!pchip->banks) return -ENOMEM; + pchip->chip.parent = pchip->dev; pchip->chip.label = "gpio-pxa"; pchip->chip.direction_input = pxa_gpio_direction_input; pchip->chip.direction_output = pxa_gpio_direction_output; @@ -365,7 +365,6 @@ static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio, pchip->chip.free = gpiochip_generic_free; #ifdef CONFIG_OF_GPIO - pchip->chip.of_node = np; pchip->chip.of_xlate = pxa_gpio_of_xlate; pchip->chip.of_gpio_n_cells = 2; #endif @@ -675,8 +674,7 @@ static int pxa_gpio_probe(struct platform_device *pdev) } /* Initialize GPIO chips */ - ret = pxa_init_gpio_chip(pchip, pxa_last_gpio + 1, pdev->dev.of_node, - gpio_reg_base); + ret = pxa_init_gpio_chip(pchip, pxa_last_gpio + 1, gpio_reg_base); if (ret) { clk_put(clk); return ret; diff --git a/drivers/gpio/gpio-raspberrypi-exp.c b/drivers/gpio/gpio-raspberrypi-exp.c index 64a552ecc2ad..3c414e0005fc 100644 --- a/drivers/gpio/gpio-raspberrypi-exp.c +++ b/drivers/gpio/gpio-raspberrypi-exp.c @@ -221,7 +221,6 @@ static int rpi_exp_gpio_probe(struct platform_device *pdev) rpi_gpio->gc.parent = dev; rpi_gpio->gc.label = MODULE_NAME; rpi_gpio->gc.owner = THIS_MODULE; - rpi_gpio->gc.of_node = np; rpi_gpio->gc.base = -1; rpi_gpio->gc.ngpio = NUM_GPIO; diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index f7b653314e7e..bd2e16d6e21c 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -477,7 +477,6 @@ static void gpio_rcar_enable_inputs(struct gpio_rcar_priv *p) static int gpio_rcar_probe(struct platform_device *pdev) { struct gpio_rcar_priv *p; - struct resource *irq; struct gpio_chip *gpio_chip; struct irq_chip *irq_chip; struct gpio_irq_chip *girq; @@ -502,12 +501,10 @@ static int gpio_rcar_probe(struct platform_device *pdev) pm_runtime_enable(dev); - irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!irq) { - dev_err(dev, "missing IRQ\n"); - ret = -EINVAL; + ret = platform_get_irq(pdev, 0); + if (ret < 0) goto err0; - } + p->irq_parent = ret; p->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(p->base)) { @@ -555,11 +552,10 @@ static int gpio_rcar_probe(struct platform_device *pdev) goto err0; } - p->irq_parent = irq->start; - if (devm_request_irq(dev, irq->start, gpio_rcar_irq_handler, - IRQF_SHARED, name, p)) { + ret = devm_request_irq(dev, p->irq_parent, gpio_rcar_irq_handler, + IRQF_SHARED, name, p); + if (ret) { dev_err(dev, "failed to request IRQ\n"); - ret = -ENOENT; goto err1; } diff --git a/drivers/gpio/gpio-rda.c b/drivers/gpio/gpio-rda.c index 463846431183..62ba18b3a602 100644 --- a/drivers/gpio/gpio-rda.c +++ b/drivers/gpio/gpio-rda.c @@ -197,7 +197,6 @@ static void rda_gpio_irq_handler(struct irq_desc *desc) static int rda_gpio_probe(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; struct gpio_irq_chip *girq; struct rda_gpio *rda_gpio; @@ -240,8 +239,6 @@ static int rda_gpio_probe(struct platform_device *pdev) rda_gpio->chip.label = dev_name(dev); rda_gpio->chip.ngpio = ngpios; rda_gpio->chip.base = -1; - rda_gpio->chip.parent = dev; - rda_gpio->chip.of_node = np; if (rda_gpio->irq >= 0) { rda_gpio->irq_chip.name = "rda-gpio", diff --git a/drivers/gpio/gpio-regmap.c b/drivers/gpio/gpio-regmap.c index 69c219742083..6383136cbe59 100644 --- a/drivers/gpio/gpio-regmap.c +++ b/drivers/gpio/gpio-regmap.c @@ -244,16 +244,12 @@ struct gpio_regmap *gpio_regmap_register(const struct gpio_regmap_config *config chip = &gpio->gpio_chip; chip->parent = config->parent; + chip->fwnode = config->fwnode; chip->base = -1; chip->ngpio = config->ngpio; chip->names = config->names; chip->label = config->label ?: dev_name(config->parent); -#if defined(CONFIG_OF_GPIO) - /* gpiolib will use of_node of the parent if chip->of_node is NULL */ - chip->of_node = to_of_node(config->fwnode); -#endif /* CONFIG_OF_GPIO */ - /* * If our regmap is fast_io we should probably set can_sleep to false. * Right now, the regmap doesn't save this property, nor is there any diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c index ce63cbd14d69..a4c4e4584f5b 100644 --- a/drivers/gpio/gpio-rockchip.c +++ b/drivers/gpio/gpio-rockchip.c @@ -465,6 +465,22 @@ out: return ret; } +static int rockchip_irq_reqres(struct irq_data *d) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct rockchip_pin_bank *bank = gc->private; + + return gpiochip_reqres_irq(&bank->gpio_chip, d->hwirq); +} + +static void rockchip_irq_relres(struct irq_data *d) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct rockchip_pin_bank *bank = gc->private; + + gpiochip_relres_irq(&bank->gpio_chip, d->hwirq); +} + static void rockchip_irq_suspend(struct irq_data *d) { struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); @@ -536,6 +552,8 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) gc->chip_types[0].chip.irq_suspend = rockchip_irq_suspend; gc->chip_types[0].chip.irq_resume = rockchip_irq_resume; gc->chip_types[0].chip.irq_set_type = rockchip_irq_set_type; + gc->chip_types[0].chip.irq_request_resources = rockchip_irq_reqres; + gc->chip_types[0].chip.irq_release_resources = rockchip_irq_relres; gc->wake_enabled = IRQ_MSK(bank->nr_pins); /* @@ -566,9 +584,6 @@ static int rockchip_gpiolib_register(struct rockchip_pin_bank *bank) gc->ngpio = bank->nr_pins; gc->label = bank->name; gc->parent = bank->dev; -#ifdef CONFIG_OF_GPIO - gc->of_node = of_node_get(bank->of_node); -#endif ret = gpiochip_add_data(gc, bank); if (ret) { diff --git a/drivers/gpio/gpio-sama5d2-piobu.c b/drivers/gpio/gpio-sama5d2-piobu.c index b7c950658170..3e95da717fc9 100644 --- a/drivers/gpio/gpio-sama5d2-piobu.c +++ b/drivers/gpio/gpio-sama5d2-piobu.c @@ -192,7 +192,6 @@ static int sama5d2_piobu_probe(struct platform_device *pdev) platform_set_drvdata(pdev, piobu); piobu->chip.label = pdev->name; piobu->chip.parent = &pdev->dev; - piobu->chip.of_node = pdev->dev.of_node; piobu->chip.owner = THIS_MODULE, piobu->chip.get_direction = sama5d2_piobu_get_direction, piobu->chip.direction_input = sama5d2_piobu_direction_input, diff --git a/drivers/gpio/gpio-sch.c b/drivers/gpio/gpio-sch.c index 0600f71462b5..acda4c5052d3 100644 --- a/drivers/gpio/gpio-sch.c +++ b/drivers/gpio/gpio-sch.c @@ -139,7 +139,7 @@ static int sch_gpio_direction_out(struct gpio_chip *gc, unsigned int gpio_num, /* * according to the datasheet, writing to the level register has no * effect when GPIO is programmed as input. - * Actually the the level register is read-only when configured as input. + * Actually the level register is read-only when configured as input. * Thus presetting the output level before switching to output is _NOT_ possible. * Hence we set the level after configuring the GPIO as output. * But we cannot prevent a short low pulse if direction is set to high diff --git a/drivers/gpio/gpio-sim.c b/drivers/gpio/gpio-sim.c new file mode 100644 index 000000000000..838bbfed11d3 --- /dev/null +++ b/drivers/gpio/gpio-sim.c @@ -0,0 +1,1592 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * GPIO testing driver based on configfs. + * + * Copyright (C) 2021 Bartosz Golaszewski <brgl@bgdev.pl> + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/bitmap.h> +#include <linux/completion.h> +#include <linux/configfs.h> +#include <linux/device.h> +#include <linux/gpio/driver.h> +#include <linux/gpio/machine.h> +#include <linux/idr.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/irq_sim.h> +#include <linux/list.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/notifier.h> +#include <linux/platform_device.h> +#include <linux/property.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/string_helpers.h> +#include <linux/sysfs.h> + +#include "gpiolib.h" + +#define GPIO_SIM_PROP_MAX 4 /* Max 3 properties + sentinel. */ +#define GPIO_SIM_NUM_ATTRS 3 /* value, pull and sentinel */ + +static DEFINE_IDA(gpio_sim_ida); + +struct gpio_sim_chip { + struct gpio_chip gc; + unsigned long *direction_map; + unsigned long *value_map; + unsigned long *pull_map; + struct irq_domain *irq_sim; + struct mutex lock; + const struct attribute_group **attr_groups; +}; + +struct gpio_sim_attribute { + struct device_attribute dev_attr; + unsigned int offset; +}; + +static struct gpio_sim_attribute * +to_gpio_sim_attr(struct device_attribute *dev_attr) +{ + return container_of(dev_attr, struct gpio_sim_attribute, dev_attr); +} + +static int gpio_sim_apply_pull(struct gpio_sim_chip *chip, + unsigned int offset, int value) +{ + int irq, irq_type, ret; + struct gpio_desc *desc; + struct gpio_chip *gc; + + gc = &chip->gc; + desc = &gc->gpiodev->descs[offset]; + + mutex_lock(&chip->lock); + + if (test_bit(FLAG_REQUESTED, &desc->flags) && + !test_bit(FLAG_IS_OUT, &desc->flags)) { + if (value == !!test_bit(offset, chip->value_map)) + goto set_pull; + + /* + * This is fine - it just means, nobody is listening + * for interrupts on this line, otherwise + * irq_create_mapping() would have been called from + * the to_irq() callback. + */ + irq = irq_find_mapping(chip->irq_sim, offset); + if (!irq) + goto set_value; + + irq_type = irq_get_trigger_type(irq); + + if ((value && (irq_type & IRQ_TYPE_EDGE_RISING)) || + (!value && (irq_type & IRQ_TYPE_EDGE_FALLING))) { + ret = irq_set_irqchip_state(irq, IRQCHIP_STATE_PENDING, + true); + if (ret) + goto set_pull; + } + } + +set_value: + /* Change the value unless we're actively driving the line. */ + if (!test_bit(FLAG_REQUESTED, &desc->flags) || + !test_bit(FLAG_IS_OUT, &desc->flags)) + __assign_bit(offset, chip->value_map, value); + +set_pull: + __assign_bit(offset, chip->pull_map, value); + mutex_unlock(&chip->lock); + return 0; +} + +static int gpio_sim_get(struct gpio_chip *gc, unsigned int offset) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + int ret; + + mutex_lock(&chip->lock); + ret = !!test_bit(offset, chip->value_map); + mutex_unlock(&chip->lock); + + return ret; +} + +static void gpio_sim_set(struct gpio_chip *gc, unsigned int offset, int value) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + + mutex_lock(&chip->lock); + __assign_bit(offset, chip->value_map, value); + mutex_unlock(&chip->lock); +} + +static int gpio_sim_get_multiple(struct gpio_chip *gc, + unsigned long *mask, unsigned long *bits) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + + mutex_lock(&chip->lock); + bitmap_copy(bits, chip->value_map, gc->ngpio); + mutex_unlock(&chip->lock); + + return 0; +} + +static void gpio_sim_set_multiple(struct gpio_chip *gc, + unsigned long *mask, unsigned long *bits) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + + mutex_lock(&chip->lock); + bitmap_copy(chip->value_map, bits, gc->ngpio); + mutex_unlock(&chip->lock); +} + +static int gpio_sim_direction_output(struct gpio_chip *gc, + unsigned int offset, int value) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + + mutex_lock(&chip->lock); + __clear_bit(offset, chip->direction_map); + __assign_bit(offset, chip->value_map, value); + mutex_unlock(&chip->lock); + + return 0; +} + +static int gpio_sim_direction_input(struct gpio_chip *gc, unsigned int offset) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + + mutex_lock(&chip->lock); + __set_bit(offset, chip->direction_map); + mutex_unlock(&chip->lock); + + return 0; +} + +static int gpio_sim_get_direction(struct gpio_chip *gc, unsigned int offset) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + int direction; + + mutex_lock(&chip->lock); + direction = !!test_bit(offset, chip->direction_map); + mutex_unlock(&chip->lock); + + return direction ? GPIO_LINE_DIRECTION_IN : GPIO_LINE_DIRECTION_OUT; +} + +static int gpio_sim_set_config(struct gpio_chip *gc, + unsigned int offset, unsigned long config) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + + switch (pinconf_to_config_param(config)) { + case PIN_CONFIG_BIAS_PULL_UP: + return gpio_sim_apply_pull(chip, offset, 1); + case PIN_CONFIG_BIAS_PULL_DOWN: + return gpio_sim_apply_pull(chip, offset, 0); + default: + break; + } + + return -ENOTSUPP; +} + +static int gpio_sim_to_irq(struct gpio_chip *gc, unsigned int offset) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + + return irq_create_mapping(chip->irq_sim, offset); +} + +static void gpio_sim_free(struct gpio_chip *gc, unsigned int offset) +{ + struct gpio_sim_chip *chip = gpiochip_get_data(gc); + + mutex_lock(&chip->lock); + __assign_bit(offset, chip->value_map, !!test_bit(offset, chip->pull_map)); + mutex_unlock(&chip->lock); +} + +static ssize_t gpio_sim_sysfs_val_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gpio_sim_attribute *line_attr = to_gpio_sim_attr(attr); + struct gpio_sim_chip *chip = dev_get_drvdata(dev); + int val; + + mutex_lock(&chip->lock); + val = !!test_bit(line_attr->offset, chip->value_map); + mutex_unlock(&chip->lock); + + return sysfs_emit(buf, "%d\n", val); +} + +static ssize_t gpio_sim_sysfs_val_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + /* + * Not assigning this function will result in write() returning -EIO + * which is confusing. Return -EPERM explicitly. + */ + return -EPERM; +} + +static const char *const gpio_sim_sysfs_pull_strings[] = { + [0] = "pull-down", + [1] = "pull-up", +}; + +static ssize_t gpio_sim_sysfs_pull_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct gpio_sim_attribute *line_attr = to_gpio_sim_attr(attr); + struct gpio_sim_chip *chip = dev_get_drvdata(dev); + int pull; + + mutex_lock(&chip->lock); + pull = !!test_bit(line_attr->offset, chip->pull_map); + mutex_unlock(&chip->lock); + + return sysfs_emit(buf, "%s\n", gpio_sim_sysfs_pull_strings[pull]); +} + +static ssize_t gpio_sim_sysfs_pull_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct gpio_sim_attribute *line_attr = to_gpio_sim_attr(attr); + struct gpio_sim_chip *chip = dev_get_drvdata(dev); + int ret, pull; + + pull = sysfs_match_string(gpio_sim_sysfs_pull_strings, buf); + if (pull < 0) + return pull; + + ret = gpio_sim_apply_pull(chip, line_attr->offset, pull); + if (ret) + return ret; + + return len; +} + +static void gpio_sim_mutex_destroy(void *data) +{ + struct mutex *lock = data; + + mutex_destroy(lock); +} + +static void gpio_sim_sysfs_remove(void *data) +{ + struct gpio_sim_chip *chip = data; + + sysfs_remove_groups(&chip->gc.gpiodev->dev.kobj, chip->attr_groups); +} + +static int gpio_sim_setup_sysfs(struct gpio_sim_chip *chip) +{ + struct device_attribute *val_dev_attr, *pull_dev_attr; + struct gpio_sim_attribute *val_attr, *pull_attr; + unsigned int num_lines = chip->gc.ngpio; + struct device *dev = chip->gc.parent; + struct attribute_group *attr_group; + struct attribute **attrs; + int i, ret; + + chip->attr_groups = devm_kcalloc(dev, sizeof(*chip->attr_groups), + num_lines + 1, GFP_KERNEL); + if (!chip->attr_groups) + return -ENOMEM; + + for (i = 0; i < num_lines; i++) { + attr_group = devm_kzalloc(dev, sizeof(*attr_group), GFP_KERNEL); + attrs = devm_kcalloc(dev, sizeof(*attrs), + GPIO_SIM_NUM_ATTRS, GFP_KERNEL); + val_attr = devm_kzalloc(dev, sizeof(*val_attr), GFP_KERNEL); + pull_attr = devm_kzalloc(dev, sizeof(*pull_attr), GFP_KERNEL); + if (!attr_group || !attrs || !val_attr || !pull_attr) + return -ENOMEM; + + attr_group->name = devm_kasprintf(dev, GFP_KERNEL, + "sim_gpio%u", i); + if (!attr_group->name) + return -ENOMEM; + + val_attr->offset = pull_attr->offset = i; + + val_dev_attr = &val_attr->dev_attr; + pull_dev_attr = &pull_attr->dev_attr; + + sysfs_attr_init(&val_dev_attr->attr); + sysfs_attr_init(&pull_dev_attr->attr); + + val_dev_attr->attr.name = "value"; + pull_dev_attr->attr.name = "pull"; + + val_dev_attr->attr.mode = pull_dev_attr->attr.mode = 0644; + + val_dev_attr->show = gpio_sim_sysfs_val_show; + val_dev_attr->store = gpio_sim_sysfs_val_store; + pull_dev_attr->show = gpio_sim_sysfs_pull_show; + pull_dev_attr->store = gpio_sim_sysfs_pull_store; + + attrs[0] = &val_dev_attr->attr; + attrs[1] = &pull_dev_attr->attr; + + attr_group->attrs = attrs; + chip->attr_groups[i] = attr_group; + } + + ret = sysfs_create_groups(&chip->gc.gpiodev->dev.kobj, + chip->attr_groups); + if (ret) + return ret; + + return devm_add_action_or_reset(dev, gpio_sim_sysfs_remove, chip); +} + +static int gpio_sim_add_bank(struct fwnode_handle *swnode, struct device *dev) +{ + struct gpio_sim_chip *chip; + struct gpio_chip *gc; + const char *label; + u32 num_lines; + int ret; + + ret = fwnode_property_read_u32(swnode, "ngpios", &num_lines); + if (ret) + return ret; + + ret = fwnode_property_read_string(swnode, "gpio-sim,label", &label); + if (ret) { + label = devm_kasprintf(dev, GFP_KERNEL, "%s-%s", + dev_name(dev), fwnode_get_name(swnode)); + if (!label) + return -ENOMEM; + } + + chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->direction_map = devm_bitmap_alloc(dev, num_lines, GFP_KERNEL); + if (!chip->direction_map) + return -ENOMEM; + + /* Default to input mode. */ + bitmap_fill(chip->direction_map, num_lines); + + chip->value_map = devm_bitmap_zalloc(dev, num_lines, GFP_KERNEL); + if (!chip->value_map) + return -ENOMEM; + + chip->pull_map = devm_bitmap_zalloc(dev, num_lines, GFP_KERNEL); + if (!chip->pull_map) + return -ENOMEM; + + chip->irq_sim = devm_irq_domain_create_sim(dev, NULL, num_lines); + if (IS_ERR(chip->irq_sim)) + return PTR_ERR(chip->irq_sim); + + mutex_init(&chip->lock); + ret = devm_add_action_or_reset(dev, gpio_sim_mutex_destroy, + &chip->lock); + if (ret) + return ret; + + gc = &chip->gc; + gc->base = -1; + gc->ngpio = num_lines; + gc->label = label; + gc->owner = THIS_MODULE; + gc->parent = dev; + gc->fwnode = swnode; + gc->get = gpio_sim_get; + gc->set = gpio_sim_set; + gc->get_multiple = gpio_sim_get_multiple; + gc->set_multiple = gpio_sim_set_multiple; + gc->direction_output = gpio_sim_direction_output; + gc->direction_input = gpio_sim_direction_input; + gc->get_direction = gpio_sim_get_direction; + gc->set_config = gpio_sim_set_config; + gc->to_irq = gpio_sim_to_irq; + gc->free = gpio_sim_free; + + ret = devm_gpiochip_add_data(dev, gc, chip); + if (ret) + return ret; + + /* Used by sysfs and configfs callbacks. */ + dev_set_drvdata(&gc->gpiodev->dev, chip); + + return gpio_sim_setup_sysfs(chip); +} + +static int gpio_sim_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct fwnode_handle *swnode; + int ret; + + device_for_each_child_node(dev, swnode) { + ret = gpio_sim_add_bank(swnode, dev); + if (ret) { + fwnode_handle_put(swnode); + return ret; + } + } + + return 0; +} + +static const struct of_device_id gpio_sim_of_match[] = { + { .compatible = "gpio-simulator" }, + { } +}; +MODULE_DEVICE_TABLE(of, gpio_sim_of_match); + +static struct platform_driver gpio_sim_driver = { + .driver = { + .name = "gpio-sim", + .of_match_table = gpio_sim_of_match, + }, + .probe = gpio_sim_probe, +}; + +struct gpio_sim_device { + struct config_group group; + + /* + * If pdev is NULL, the device is 'pending' (waiting for configuration). + * Once the pointer is assigned, the device has been created and the + * item is 'live'. + */ + struct platform_device *pdev; + int id; + + /* + * Each configfs filesystem operation is protected with the subsystem + * mutex. Each separate attribute is protected with the buffer mutex. + * This structure however can be modified by callbacks of different + * attributes so we need another lock. + * + * We use this lock fo protecting all data structures owned by this + * object too. + */ + struct mutex lock; + + /* + * This is used to synchronously wait for the driver's probe to complete + * and notify the user-space about any errors. + */ + struct notifier_block bus_notifier; + struct completion probe_completion; + bool driver_bound; + + struct gpiod_hog *hogs; + + struct list_head bank_list; +}; + +/* This is called with dev->lock already taken. */ +static int gpio_sim_bus_notifier_call(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct gpio_sim_device *simdev = container_of(nb, + struct gpio_sim_device, + bus_notifier); + struct device *dev = data; + char devname[32]; + + snprintf(devname, sizeof(devname), "gpio-sim.%u", simdev->id); + + if (strcmp(dev_name(dev), devname) == 0) { + if (action == BUS_NOTIFY_BOUND_DRIVER) + simdev->driver_bound = true; + else if (action == BUS_NOTIFY_DRIVER_NOT_BOUND) + simdev->driver_bound = false; + else + return NOTIFY_DONE; + + complete(&simdev->probe_completion); + return NOTIFY_OK; + } + + return NOTIFY_DONE; +} + +static struct gpio_sim_device *to_gpio_sim_device(struct config_item *item) +{ + struct config_group *group = to_config_group(item); + + return container_of(group, struct gpio_sim_device, group); +} + +struct gpio_sim_bank { + struct config_group group; + + /* + * We could have used the ci_parent field of the config_item but + * configfs is stupid and calls the item's release callback after + * already having cleared the parent pointer even though the parent + * is guaranteed to survive the child... + * + * So we need to store the pointer to the parent struct here. We can + * dereference it anywhere we need with no checks and no locking as + * it's guaranteed to survive the childred and protected by configfs + * locks. + * + * Same for other structures. + */ + struct gpio_sim_device *parent; + struct list_head siblings; + + char *label; + unsigned int num_lines; + + struct list_head line_list; + + struct fwnode_handle *swnode; +}; + +static struct gpio_sim_bank *to_gpio_sim_bank(struct config_item *item) +{ + struct config_group *group = to_config_group(item); + + return container_of(group, struct gpio_sim_bank, group); +} + +static struct gpio_sim_device * +gpio_sim_bank_get_device(struct gpio_sim_bank *bank) +{ + return bank->parent; +} + +struct gpio_sim_hog; + +struct gpio_sim_line { + struct config_group group; + + struct gpio_sim_bank *parent; + struct list_head siblings; + + unsigned int offset; + char *name; + + /* There can only be one hog per line. */ + struct gpio_sim_hog *hog; +}; + +static struct gpio_sim_line *to_gpio_sim_line(struct config_item *item) +{ + struct config_group *group = to_config_group(item); + + return container_of(group, struct gpio_sim_line, group); +} + +static struct gpio_sim_device * +gpio_sim_line_get_device(struct gpio_sim_line *line) +{ + struct gpio_sim_bank *bank = line->parent; + + return gpio_sim_bank_get_device(bank); +} + +struct gpio_sim_hog { + struct config_item item; + struct gpio_sim_line *parent; + + char *name; + int dir; +}; + +static struct gpio_sim_hog *to_gpio_sim_hog(struct config_item *item) +{ + return container_of(item, struct gpio_sim_hog, item); +} + +static struct gpio_sim_device *gpio_sim_hog_get_device(struct gpio_sim_hog *hog) +{ + struct gpio_sim_line *line = hog->parent; + + return gpio_sim_line_get_device(line); +} + +static bool gpio_sim_device_is_live_unlocked(struct gpio_sim_device *dev) +{ + return !!dev->pdev; +} + +static char *gpio_sim_strdup_trimmed(const char *str, size_t count) +{ + char *dup, *trimmed; + + dup = kstrndup(str, count, GFP_KERNEL); + if (!dup) + return NULL; + + trimmed = strstrip(dup); + memmove(dup, trimmed, strlen(trimmed) + 1); + + return dup; +} + +static ssize_t gpio_sim_device_config_dev_name_show(struct config_item *item, + char *page) +{ + struct gpio_sim_device *dev = to_gpio_sim_device(item); + struct platform_device *pdev; + int ret; + + mutex_lock(&dev->lock); + pdev = dev->pdev; + if (pdev) + ret = sprintf(page, "%s\n", dev_name(&pdev->dev)); + else + ret = sprintf(page, "gpio-sim.%d\n", dev->id); + mutex_unlock(&dev->lock); + + return ret; +} + +CONFIGFS_ATTR_RO(gpio_sim_device_config_, dev_name); + +static ssize_t +gpio_sim_device_config_live_show(struct config_item *item, char *page) +{ + struct gpio_sim_device *dev = to_gpio_sim_device(item); + bool live; + + mutex_lock(&dev->lock); + live = gpio_sim_device_is_live_unlocked(dev); + mutex_unlock(&dev->lock); + + return sprintf(page, "%c\n", live ? '1' : '0'); +} + +static char **gpio_sim_make_line_names(struct gpio_sim_bank *bank, + unsigned int *line_names_size) +{ + unsigned int max_offset = 0; + bool has_line_names = false; + struct gpio_sim_line *line; + char **line_names; + + list_for_each_entry(line, &bank->line_list, siblings) { + if (line->name) { + if (line->offset > max_offset) + max_offset = line->offset; + + /* + * max_offset can stay at 0 so it's not an indicator + * of whether line names were configured at all. + */ + has_line_names = true; + } + } + + if (!has_line_names) + /* + * This is not an error - NULL means, there are no line + * names configured. + */ + return NULL; + + *line_names_size = max_offset + 1; + + line_names = kcalloc(*line_names_size, sizeof(*line_names), GFP_KERNEL); + if (!line_names) + return ERR_PTR(-ENOMEM); + + list_for_each_entry(line, &bank->line_list, siblings) + line_names[line->offset] = line->name; + + return line_names; +} + +static void gpio_sim_remove_hogs(struct gpio_sim_device *dev) +{ + struct gpiod_hog *hog; + + if (!dev->hogs) + return; + + gpiod_remove_hogs(dev->hogs); + + for (hog = dev->hogs; !hog->chip_label; hog++) { + kfree(hog->chip_label); + kfree(hog->line_name); + } + + kfree(dev->hogs); + dev->hogs = NULL; +} + +static int gpio_sim_add_hogs(struct gpio_sim_device *dev) +{ + unsigned int num_hogs = 0, idx = 0; + struct gpio_sim_bank *bank; + struct gpio_sim_line *line; + struct gpiod_hog *hog; + + list_for_each_entry(bank, &dev->bank_list, siblings) { + list_for_each_entry(line, &bank->line_list, siblings) { + if (line->hog) + num_hogs++; + } + } + + if (!num_hogs) + return 0; + + /* Allocate one more for the sentinel. */ + dev->hogs = kcalloc(num_hogs + 1, sizeof(*dev->hogs), GFP_KERNEL); + if (!dev->hogs) + return -ENOMEM; + + list_for_each_entry(bank, &dev->bank_list, siblings) { + list_for_each_entry(line, &bank->line_list, siblings) { + if (!line->hog) + continue; + + hog = &dev->hogs[idx++]; + + /* + * We need to make this string manually because at this + * point the device doesn't exist yet and so dev_name() + * is not available. + */ + hog->chip_label = kasprintf(GFP_KERNEL, + "gpio-sim.%u-%s", dev->id, + fwnode_get_name(bank->swnode)); + if (!hog->chip_label) { + gpio_sim_remove_hogs(dev); + return -ENOMEM; + } + + /* + * We need to duplicate this because the hog config + * item can be removed at any time (and we can't block + * it) and gpiolib doesn't make a deep copy of the hog + * data. + */ + if (line->hog->name) { + hog->line_name = kstrdup(line->hog->name, + GFP_KERNEL); + if (!hog->line_name) { + gpio_sim_remove_hogs(dev); + return -ENOMEM; + } + } + + hog->chip_hwnum = line->offset; + hog->dflags = line->hog->dir; + } + } + + gpiod_add_hogs(dev->hogs); + + return 0; +} + +static struct fwnode_handle * +gpio_sim_make_bank_swnode(struct gpio_sim_bank *bank, + struct fwnode_handle *parent) +{ + struct property_entry properties[GPIO_SIM_PROP_MAX]; + unsigned int prop_idx = 0, line_names_size = 0; + struct fwnode_handle *swnode; + char **line_names; + + memset(properties, 0, sizeof(properties)); + + properties[prop_idx++] = PROPERTY_ENTRY_U32("ngpios", bank->num_lines); + + if (bank->label) + properties[prop_idx++] = PROPERTY_ENTRY_STRING("gpio-sim,label", + bank->label); + + line_names = gpio_sim_make_line_names(bank, &line_names_size); + if (IS_ERR(line_names)) + return ERR_CAST(line_names); + + if (line_names) + properties[prop_idx++] = PROPERTY_ENTRY_STRING_ARRAY_LEN( + "gpio-line-names", + line_names, line_names_size); + + swnode = fwnode_create_software_node(properties, parent); + kfree(line_names); + return swnode; +} + +static void gpio_sim_remove_swnode_recursive(struct fwnode_handle *swnode) +{ + struct fwnode_handle *child; + + fwnode_for_each_child_node(swnode, child) + fwnode_remove_software_node(child); + + fwnode_remove_software_node(swnode); +} + +static bool gpio_sim_bank_labels_non_unique(struct gpio_sim_device *dev) +{ + struct gpio_sim_bank *this, *pos; + + list_for_each_entry(this, &dev->bank_list, siblings) { + list_for_each_entry(pos, &dev->bank_list, siblings) { + if (this == pos || (!this->label || !pos->label)) + continue; + + if (strcmp(this->label, pos->label) == 0) + return true; + } + } + + return false; +} + +static int gpio_sim_device_activate_unlocked(struct gpio_sim_device *dev) +{ + struct platform_device_info pdevinfo; + struct fwnode_handle *swnode; + struct platform_device *pdev; + struct gpio_sim_bank *bank; + int ret; + + if (list_empty(&dev->bank_list)) + return -ENODATA; + + /* + * Non-unique GPIO device labels are a corner-case we don't support + * as it would interfere with machine hogging mechanism and has little + * use in real life. + */ + if (gpio_sim_bank_labels_non_unique(dev)) + return -EINVAL; + + memset(&pdevinfo, 0, sizeof(pdevinfo)); + + swnode = fwnode_create_software_node(NULL, NULL); + if (IS_ERR(swnode)) + return PTR_ERR(swnode); + + list_for_each_entry(bank, &dev->bank_list, siblings) { + bank->swnode = gpio_sim_make_bank_swnode(bank, swnode); + if (IS_ERR(bank->swnode)) { + ret = PTR_ERR(bank->swnode); + gpio_sim_remove_swnode_recursive(swnode); + return ret; + } + } + + ret = gpio_sim_add_hogs(dev); + if (ret) { + gpio_sim_remove_swnode_recursive(swnode); + return ret; + } + + pdevinfo.name = "gpio-sim"; + pdevinfo.fwnode = swnode; + pdevinfo.id = dev->id; + + reinit_completion(&dev->probe_completion); + dev->driver_bound = false; + bus_register_notifier(&platform_bus_type, &dev->bus_notifier); + + pdev = platform_device_register_full(&pdevinfo); + if (IS_ERR(pdev)) { + bus_unregister_notifier(&platform_bus_type, &dev->bus_notifier); + gpio_sim_remove_hogs(dev); + gpio_sim_remove_swnode_recursive(swnode); + return PTR_ERR(pdev); + } + + wait_for_completion(&dev->probe_completion); + bus_unregister_notifier(&platform_bus_type, &dev->bus_notifier); + + if (!dev->driver_bound) { + /* Probe failed, check kernel log. */ + platform_device_unregister(pdev); + gpio_sim_remove_hogs(dev); + gpio_sim_remove_swnode_recursive(swnode); + return -ENXIO; + } + + dev->pdev = pdev; + + return 0; +} + +static void gpio_sim_device_deactivate_unlocked(struct gpio_sim_device *dev) +{ + struct fwnode_handle *swnode; + + swnode = dev_fwnode(&dev->pdev->dev); + platform_device_unregister(dev->pdev); + gpio_sim_remove_swnode_recursive(swnode); + dev->pdev = NULL; + gpio_sim_remove_hogs(dev); +} + +static ssize_t +gpio_sim_device_config_live_store(struct config_item *item, + const char *page, size_t count) +{ + struct gpio_sim_device *dev = to_gpio_sim_device(item); + bool live; + int ret; + + ret = kstrtobool(page, &live); + if (ret) + return ret; + + mutex_lock(&dev->lock); + + if ((!live && !gpio_sim_device_is_live_unlocked(dev)) || + (live && gpio_sim_device_is_live_unlocked(dev))) + ret = -EPERM; + else if (live) + ret = gpio_sim_device_activate_unlocked(dev); + else + gpio_sim_device_deactivate_unlocked(dev); + + mutex_unlock(&dev->lock); + + return ret ?: count; +} + +CONFIGFS_ATTR(gpio_sim_device_config_, live); + +static struct configfs_attribute *gpio_sim_device_config_attrs[] = { + &gpio_sim_device_config_attr_dev_name, + &gpio_sim_device_config_attr_live, + NULL +}; + +struct gpio_sim_chip_name_ctx { + struct gpio_sim_device *dev; + char *page; +}; + +static int gpio_sim_emit_chip_name(struct device *dev, void *data) +{ + struct gpio_sim_chip_name_ctx *ctx = data; + struct fwnode_handle *swnode; + struct gpio_sim_bank *bank; + + /* This would be the sysfs device exported in /sys/class/gpio. */ + if (dev->class) + return 0; + + swnode = dev_fwnode(dev); + + list_for_each_entry(bank, &ctx->dev->bank_list, siblings) { + if (bank->swnode == swnode) + return sprintf(ctx->page, "%s\n", dev_name(dev)); + } + + return -ENODATA; +} + +static ssize_t gpio_sim_bank_config_chip_name_show(struct config_item *item, + char *page) +{ + struct gpio_sim_bank *bank = to_gpio_sim_bank(item); + struct gpio_sim_device *dev = gpio_sim_bank_get_device(bank); + struct gpio_sim_chip_name_ctx ctx = { dev, page }; + int ret; + + mutex_lock(&dev->lock); + if (gpio_sim_device_is_live_unlocked(dev)) + ret = device_for_each_child(&dev->pdev->dev, &ctx, + gpio_sim_emit_chip_name); + else + ret = sprintf(page, "none\n"); + mutex_unlock(&dev->lock); + + return ret; +} + +CONFIGFS_ATTR_RO(gpio_sim_bank_config_, chip_name); + +static ssize_t +gpio_sim_bank_config_label_show(struct config_item *item, char *page) +{ + struct gpio_sim_bank *bank = to_gpio_sim_bank(item); + struct gpio_sim_device *dev = gpio_sim_bank_get_device(bank); + int ret; + + mutex_lock(&dev->lock); + ret = sprintf(page, "%s\n", bank->label ?: ""); + mutex_unlock(&dev->lock); + + return ret; +} + +static ssize_t gpio_sim_bank_config_label_store(struct config_item *item, + const char *page, size_t count) +{ + struct gpio_sim_bank *bank = to_gpio_sim_bank(item); + struct gpio_sim_device *dev = gpio_sim_bank_get_device(bank); + char *trimmed; + + mutex_lock(&dev->lock); + + if (gpio_sim_device_is_live_unlocked(dev)) { + mutex_unlock(&dev->lock); + return -EBUSY; + } + + trimmed = gpio_sim_strdup_trimmed(page, count); + if (!trimmed) { + mutex_unlock(&dev->lock); + return -ENOMEM; + } + + kfree(bank->label); + bank->label = trimmed; + + mutex_unlock(&dev->lock); + return count; +} + +CONFIGFS_ATTR(gpio_sim_bank_config_, label); + +static ssize_t +gpio_sim_bank_config_num_lines_show(struct config_item *item, char *page) +{ + struct gpio_sim_bank *bank = to_gpio_sim_bank(item); + struct gpio_sim_device *dev = gpio_sim_bank_get_device(bank); + int ret; + + mutex_lock(&dev->lock); + ret = sprintf(page, "%u\n", bank->num_lines); + mutex_unlock(&dev->lock); + + return ret; +} + +static ssize_t +gpio_sim_bank_config_num_lines_store(struct config_item *item, + const char *page, size_t count) +{ + struct gpio_sim_bank *bank = to_gpio_sim_bank(item); + struct gpio_sim_device *dev = gpio_sim_bank_get_device(bank); + unsigned int num_lines; + int ret; + + ret = kstrtouint(page, 0, &num_lines); + if (ret) + return ret; + + if (num_lines == 0) + return -EINVAL; + + mutex_lock(&dev->lock); + + if (gpio_sim_device_is_live_unlocked(dev)) { + mutex_unlock(&dev->lock); + return -EBUSY; + } + + bank->num_lines = num_lines; + + mutex_unlock(&dev->lock); + return count; +} + +CONFIGFS_ATTR(gpio_sim_bank_config_, num_lines); + +static struct configfs_attribute *gpio_sim_bank_config_attrs[] = { + &gpio_sim_bank_config_attr_chip_name, + &gpio_sim_bank_config_attr_label, + &gpio_sim_bank_config_attr_num_lines, + NULL +}; + +static ssize_t +gpio_sim_line_config_name_show(struct config_item *item, char *page) +{ + struct gpio_sim_line *line = to_gpio_sim_line(item); + struct gpio_sim_device *dev = gpio_sim_line_get_device(line); + int ret; + + mutex_lock(&dev->lock); + ret = sprintf(page, "%s\n", line->name ?: ""); + mutex_unlock(&dev->lock); + + return ret; +} + +static ssize_t gpio_sim_line_config_name_store(struct config_item *item, + const char *page, size_t count) +{ + struct gpio_sim_line *line = to_gpio_sim_line(item); + struct gpio_sim_device *dev = gpio_sim_line_get_device(line); + char *trimmed; + + mutex_lock(&dev->lock); + + if (gpio_sim_device_is_live_unlocked(dev)) { + mutex_unlock(&dev->lock); + return -EBUSY; + } + + trimmed = gpio_sim_strdup_trimmed(page, count); + if (!trimmed) { + mutex_unlock(&dev->lock); + return -ENOMEM; + } + + kfree(line->name); + line->name = trimmed; + + mutex_unlock(&dev->lock); + + return count; +} + +CONFIGFS_ATTR(gpio_sim_line_config_, name); + +static struct configfs_attribute *gpio_sim_line_config_attrs[] = { + &gpio_sim_line_config_attr_name, + NULL +}; + +static ssize_t gpio_sim_hog_config_name_show(struct config_item *item, + char *page) +{ + struct gpio_sim_hog *hog = to_gpio_sim_hog(item); + struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog); + int ret; + + mutex_lock(&dev->lock); + ret = sprintf(page, "%s\n", hog->name ?: ""); + mutex_unlock(&dev->lock); + + return ret; +} + +static ssize_t gpio_sim_hog_config_name_store(struct config_item *item, + const char *page, size_t count) +{ + struct gpio_sim_hog *hog = to_gpio_sim_hog(item); + struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog); + char *trimmed; + + mutex_lock(&dev->lock); + + if (gpio_sim_device_is_live_unlocked(dev)) { + mutex_unlock(&dev->lock); + return -EBUSY; + } + + trimmed = gpio_sim_strdup_trimmed(page, count); + if (!trimmed) { + mutex_unlock(&dev->lock); + return -ENOMEM; + } + + kfree(hog->name); + hog->name = trimmed; + + mutex_unlock(&dev->lock); + + return count; +} + +CONFIGFS_ATTR(gpio_sim_hog_config_, name); + +static ssize_t gpio_sim_hog_config_direction_show(struct config_item *item, + char *page) +{ + struct gpio_sim_hog *hog = to_gpio_sim_hog(item); + struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog); + char *repr; + int dir; + + mutex_lock(&dev->lock); + dir = hog->dir; + mutex_unlock(&dev->lock); + + switch (dir) { + case GPIOD_IN: + repr = "input"; + break; + case GPIOD_OUT_HIGH: + repr = "output-high"; + break; + case GPIOD_OUT_LOW: + repr = "output-low"; + break; + default: + /* This would be a programmer bug. */ + WARN(1, "Unexpected hog direction value: %d", dir); + return -EINVAL; + } + + return sprintf(page, "%s\n", repr); +} + +static ssize_t +gpio_sim_hog_config_direction_store(struct config_item *item, + const char *page, size_t count) +{ + struct gpio_sim_hog *hog = to_gpio_sim_hog(item); + struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog); + char *trimmed; + int dir; + + mutex_lock(&dev->lock); + + if (gpio_sim_device_is_live_unlocked(dev)) { + mutex_unlock(&dev->lock); + return -EBUSY; + } + + trimmed = gpio_sim_strdup_trimmed(page, count); + if (!trimmed) { + mutex_unlock(&dev->lock); + return -ENOMEM; + } + + if (strcmp(trimmed, "input") == 0) + dir = GPIOD_IN; + else if (strcmp(trimmed, "output-high") == 0) + dir = GPIOD_OUT_HIGH; + else if (strcmp(trimmed, "output-low") == 0) + dir = GPIOD_OUT_LOW; + else + dir = -EINVAL; + + kfree(trimmed); + + if (dir < 0) { + mutex_unlock(&dev->lock); + return dir; + } + + hog->dir = dir; + + mutex_unlock(&dev->lock); + + return count; +} + +CONFIGFS_ATTR(gpio_sim_hog_config_, direction); + +static struct configfs_attribute *gpio_sim_hog_config_attrs[] = { + &gpio_sim_hog_config_attr_name, + &gpio_sim_hog_config_attr_direction, + NULL +}; + +static void gpio_sim_hog_config_item_release(struct config_item *item) +{ + struct gpio_sim_hog *hog = to_gpio_sim_hog(item); + struct gpio_sim_line *line = hog->parent; + struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog); + + mutex_lock(&dev->lock); + line->hog = NULL; + mutex_unlock(&dev->lock); + + kfree(hog->name); + kfree(hog); +} + +struct configfs_item_operations gpio_sim_hog_config_item_ops = { + .release = gpio_sim_hog_config_item_release, +}; + +static const struct config_item_type gpio_sim_hog_config_type = { + .ct_item_ops = &gpio_sim_hog_config_item_ops, + .ct_attrs = gpio_sim_hog_config_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_item * +gpio_sim_line_config_make_hog_item(struct config_group *group, const char *name) +{ + struct gpio_sim_line *line = to_gpio_sim_line(&group->cg_item); + struct gpio_sim_device *dev = gpio_sim_line_get_device(line); + struct gpio_sim_hog *hog; + + if (strcmp(name, "hog") != 0) + return ERR_PTR(-EINVAL); + + mutex_lock(&dev->lock); + + hog = kzalloc(sizeof(*hog), GFP_KERNEL); + if (!hog) { + mutex_unlock(&dev->lock); + return ERR_PTR(-ENOMEM); + } + + config_item_init_type_name(&hog->item, name, + &gpio_sim_hog_config_type); + + hog->dir = GPIOD_IN; + hog->name = NULL; + hog->parent = line; + line->hog = hog; + + mutex_unlock(&dev->lock); + + return &hog->item; +} + +static void gpio_sim_line_config_group_release(struct config_item *item) +{ + struct gpio_sim_line *line = to_gpio_sim_line(item); + struct gpio_sim_device *dev = gpio_sim_line_get_device(line); + + mutex_lock(&dev->lock); + list_del(&line->siblings); + mutex_unlock(&dev->lock); + + kfree(line->name); + kfree(line); +} + +static struct configfs_item_operations gpio_sim_line_config_item_ops = { + .release = gpio_sim_line_config_group_release, +}; + +static struct configfs_group_operations gpio_sim_line_config_group_ops = { + .make_item = gpio_sim_line_config_make_hog_item, +}; + +static const struct config_item_type gpio_sim_line_config_type = { + .ct_item_ops = &gpio_sim_line_config_item_ops, + .ct_group_ops = &gpio_sim_line_config_group_ops, + .ct_attrs = gpio_sim_line_config_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_group * +gpio_sim_bank_config_make_line_group(struct config_group *group, + const char *name) +{ + struct gpio_sim_bank *bank = to_gpio_sim_bank(&group->cg_item); + struct gpio_sim_device *dev = gpio_sim_bank_get_device(bank); + struct gpio_sim_line *line; + unsigned int offset; + int ret, nchar; + + ret = sscanf(name, "line%u%n", &offset, &nchar); + if (ret != 1 || nchar != strlen(name)) + return ERR_PTR(-EINVAL); + + mutex_lock(&dev->lock); + + if (gpio_sim_device_is_live_unlocked(dev)) { + mutex_unlock(&dev->lock); + return ERR_PTR(-EBUSY); + } + + line = kzalloc(sizeof(*line), GFP_KERNEL); + if (!line) { + mutex_unlock(&dev->lock); + return ERR_PTR(-ENOMEM); + } + + config_group_init_type_name(&line->group, name, + &gpio_sim_line_config_type); + + line->parent = bank; + line->offset = offset; + list_add_tail(&line->siblings, &bank->line_list); + + mutex_unlock(&dev->lock); + + return &line->group; +} + +static void gpio_sim_bank_config_group_release(struct config_item *item) +{ + struct gpio_sim_bank *bank = to_gpio_sim_bank(item); + struct gpio_sim_device *dev = gpio_sim_bank_get_device(bank); + + mutex_lock(&dev->lock); + list_del(&bank->siblings); + mutex_unlock(&dev->lock); + + kfree(bank->label); + kfree(bank); +} + +static struct configfs_item_operations gpio_sim_bank_config_item_ops = { + .release = gpio_sim_bank_config_group_release, +}; + +static struct configfs_group_operations gpio_sim_bank_config_group_ops = { + .make_group = gpio_sim_bank_config_make_line_group, +}; + +static const struct config_item_type gpio_sim_bank_config_group_type = { + .ct_item_ops = &gpio_sim_bank_config_item_ops, + .ct_group_ops = &gpio_sim_bank_config_group_ops, + .ct_attrs = gpio_sim_bank_config_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_group * +gpio_sim_device_config_make_bank_group(struct config_group *group, + const char *name) +{ + struct gpio_sim_device *dev = to_gpio_sim_device(&group->cg_item); + struct gpio_sim_bank *bank; + + mutex_lock(&dev->lock); + + if (gpio_sim_device_is_live_unlocked(dev)) { + mutex_unlock(&dev->lock); + return ERR_PTR(-EBUSY); + } + + bank = kzalloc(sizeof(*bank), GFP_KERNEL); + if (!bank) { + mutex_unlock(&dev->lock); + return ERR_PTR(-ENOMEM); + } + + config_group_init_type_name(&bank->group, name, + &gpio_sim_bank_config_group_type); + bank->num_lines = 1; + bank->parent = dev; + INIT_LIST_HEAD(&bank->line_list); + list_add_tail(&bank->siblings, &dev->bank_list); + + mutex_unlock(&dev->lock); + + return &bank->group; +} + +static void gpio_sim_device_config_group_release(struct config_item *item) +{ + struct gpio_sim_device *dev = to_gpio_sim_device(item); + + mutex_lock(&dev->lock); + if (gpio_sim_device_is_live_unlocked(dev)) + gpio_sim_device_deactivate_unlocked(dev); + mutex_unlock(&dev->lock); + + mutex_destroy(&dev->lock); + ida_free(&gpio_sim_ida, dev->id); + kfree(dev); +} + +static struct configfs_item_operations gpio_sim_device_config_item_ops = { + .release = gpio_sim_device_config_group_release, +}; + +static struct configfs_group_operations gpio_sim_device_config_group_ops = { + .make_group = gpio_sim_device_config_make_bank_group, +}; + +static const struct config_item_type gpio_sim_device_config_group_type = { + .ct_item_ops = &gpio_sim_device_config_item_ops, + .ct_group_ops = &gpio_sim_device_config_group_ops, + .ct_attrs = gpio_sim_device_config_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_group * +gpio_sim_config_make_device_group(struct config_group *group, const char *name) +{ + struct gpio_sim_device *dev; + int id; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return ERR_PTR(-ENOMEM); + + id = ida_alloc(&gpio_sim_ida, GFP_KERNEL); + if (id < 0) { + kfree(dev); + return ERR_PTR(id); + } + + config_group_init_type_name(&dev->group, name, + &gpio_sim_device_config_group_type); + dev->id = id; + mutex_init(&dev->lock); + INIT_LIST_HEAD(&dev->bank_list); + + dev->bus_notifier.notifier_call = gpio_sim_bus_notifier_call; + init_completion(&dev->probe_completion); + + return &dev->group; +} + +static struct configfs_group_operations gpio_sim_config_group_ops = { + .make_group = gpio_sim_config_make_device_group, +}; + +static const struct config_item_type gpio_sim_config_type = { + .ct_group_ops = &gpio_sim_config_group_ops, + .ct_owner = THIS_MODULE, +}; + +static struct configfs_subsystem gpio_sim_config_subsys = { + .su_group = { + .cg_item = { + .ci_namebuf = "gpio-sim", + .ci_type = &gpio_sim_config_type, + }, + }, +}; + +static int __init gpio_sim_init(void) +{ + int ret; + + ret = platform_driver_register(&gpio_sim_driver); + if (ret) { + pr_err("Error %d while registering the platform driver\n", ret); + return ret; + } + + config_group_init(&gpio_sim_config_subsys.su_group); + mutex_init(&gpio_sim_config_subsys.su_mutex); + ret = configfs_register_subsystem(&gpio_sim_config_subsys); + if (ret) { + pr_err("Error %d while registering the configfs subsystem %s\n", + ret, gpio_sim_config_subsys.su_group.cg_item.ci_namebuf); + mutex_destroy(&gpio_sim_config_subsys.su_mutex); + platform_driver_unregister(&gpio_sim_driver); + return ret; + } + + return 0; +} +module_init(gpio_sim_init); + +static void __exit gpio_sim_exit(void) +{ + configfs_unregister_subsystem(&gpio_sim_config_subsys); + mutex_destroy(&gpio_sim_config_subsys.su_mutex); + platform_driver_unregister(&gpio_sim_driver); +} +module_exit(gpio_sim_exit); + +MODULE_AUTHOR("Bartosz Golaszewski <brgl@bgdev.pl"); +MODULE_DESCRIPTION("GPIO Simulator Module"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpio/gpio-sprd.c b/drivers/gpio/gpio-sprd.c index 9dd9dabb579e..9bff63990eee 100644 --- a/drivers/gpio/gpio-sprd.c +++ b/drivers/gpio/gpio-sprd.c @@ -237,7 +237,6 @@ static int sprd_gpio_probe(struct platform_device *pdev) sprd_gpio->chip.ngpio = SPRD_GPIO_NR; sprd_gpio->chip.base = -1; sprd_gpio->chip.parent = &pdev->dev; - sprd_gpio->chip.of_node = pdev->dev.of_node; sprd_gpio->chip.request = sprd_gpio_request; sprd_gpio->chip.free = sprd_gpio_free; sprd_gpio->chip.get = sprd_gpio_get; diff --git a/drivers/gpio/gpio-sta2x11.c b/drivers/gpio/gpio-sta2x11.c index 392fcab06ab8..e07cca0f8d35 100644 --- a/drivers/gpio/gpio-sta2x11.c +++ b/drivers/gpio/gpio-sta2x11.c @@ -324,7 +324,7 @@ static int gsta_alloc_irq_chip(struct gsta_gpio *chip) if (rv) return rv; - /* Set up all all 128 interrupts: code from setup_generic_chip */ + /* Set up all 128 interrupts: code from setup_generic_chip */ { struct irq_chip_type *ct = gc->chip_types; int i, j; diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c index dd4d58b4ae49..0fa4f0a93378 100644 --- a/drivers/gpio/gpio-stmpe.c +++ b/drivers/gpio/gpio-stmpe.c @@ -477,7 +477,6 @@ static int stmpe_gpio_probe(struct platform_device *pdev) stmpe_gpio->chip = template_chip; stmpe_gpio->chip.ngpio = stmpe->num_gpios; stmpe_gpio->chip.parent = &pdev->dev; - stmpe_gpio->chip.of_node = np; stmpe_gpio->chip.base = -1; if (IS_ENABLED(CONFIG_DEBUG_FS)) diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c index 8d158492488f..443fe975bf13 100644 --- a/drivers/gpio/gpio-tc3589x.c +++ b/drivers/gpio/gpio-tc3589x.c @@ -319,7 +319,6 @@ static int tc3589x_gpio_probe(struct platform_device *pdev) tc3589x_gpio->chip.ngpio = tc3589x->num_gpio; tc3589x_gpio->chip.parent = &pdev->dev; tc3589x_gpio->chip.base = -1; - tc3589x_gpio->chip.of_node = np; girq = &tc3589x_gpio->chip.irq; girq->chip = &tc3589x_gpio_irq_chip; diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c index c026e7141e4e..34b36a8c035f 100644 --- a/drivers/gpio/gpio-tegra186.c +++ b/drivers/gpio/gpio-tegra186.c @@ -14,6 +14,8 @@ #include <dt-bindings/gpio/tegra186-gpio.h> #include <dt-bindings/gpio/tegra194-gpio.h> +#include <dt-bindings/gpio/tegra234-gpio.h> +#include <dt-bindings/gpio/tegra241-gpio.h> /* security registers */ #define TEGRA186_GPIO_CTL_SCR 0x0c @@ -748,7 +750,6 @@ static int tegra186_gpio_probe(struct platform_device *pdev) gpio->gpio.names = (const char * const *)names; #if defined(CONFIG_OF_GPIO) - gpio->gpio.of_node = pdev->dev.of_node; gpio->gpio.of_gpio_n_cells = 2; gpio->gpio.of_xlate = tegra186_gpio_of_xlate; #endif /* CONFIG_OF_GPIO */ @@ -972,6 +973,124 @@ static const struct tegra_gpio_soc tegra194_aon_soc = { .num_irqs_per_bank = 8, }; +#define TEGRA234_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \ + [TEGRA234_MAIN_GPIO_PORT_##_name] = { \ + .name = #_name, \ + .bank = _bank, \ + .port = _port, \ + .pins = _pins, \ + } + +static const struct tegra_gpio_port tegra234_main_ports[] = { + TEGRA234_MAIN_GPIO_PORT( A, 0, 0, 8), + TEGRA234_MAIN_GPIO_PORT( B, 0, 3, 1), + TEGRA234_MAIN_GPIO_PORT( C, 5, 1, 8), + TEGRA234_MAIN_GPIO_PORT( D, 5, 2, 4), + TEGRA234_MAIN_GPIO_PORT( E, 5, 3, 8), + TEGRA234_MAIN_GPIO_PORT( F, 5, 4, 6), + TEGRA234_MAIN_GPIO_PORT( G, 4, 0, 8), + TEGRA234_MAIN_GPIO_PORT( H, 4, 1, 8), + TEGRA234_MAIN_GPIO_PORT( I, 4, 2, 7), + TEGRA234_MAIN_GPIO_PORT( J, 5, 0, 6), + TEGRA234_MAIN_GPIO_PORT( K, 3, 0, 8), + TEGRA234_MAIN_GPIO_PORT( L, 3, 1, 4), + TEGRA234_MAIN_GPIO_PORT( M, 2, 0, 8), + TEGRA234_MAIN_GPIO_PORT( N, 2, 1, 8), + TEGRA234_MAIN_GPIO_PORT( P, 2, 2, 8), + TEGRA234_MAIN_GPIO_PORT( Q, 2, 3, 8), + TEGRA234_MAIN_GPIO_PORT( R, 2, 4, 6), + TEGRA234_MAIN_GPIO_PORT( X, 1, 0, 8), + TEGRA234_MAIN_GPIO_PORT( Y, 1, 1, 8), + TEGRA234_MAIN_GPIO_PORT( Z, 1, 2, 8), + TEGRA234_MAIN_GPIO_PORT(AC, 0, 1, 8), + TEGRA234_MAIN_GPIO_PORT(AD, 0, 2, 4), + TEGRA234_MAIN_GPIO_PORT(AE, 3, 3, 2), + TEGRA234_MAIN_GPIO_PORT(AF, 3, 4, 4), + TEGRA234_MAIN_GPIO_PORT(AG, 3, 2, 8), +}; + +static const struct tegra_gpio_soc tegra234_main_soc = { + .num_ports = ARRAY_SIZE(tegra234_main_ports), + .ports = tegra234_main_ports, + .name = "tegra234-gpio", + .instance = 0, + .num_irqs_per_bank = 8, +}; + +#define TEGRA234_AON_GPIO_PORT(_name, _bank, _port, _pins) \ + [TEGRA234_AON_GPIO_PORT_##_name] = { \ + .name = #_name, \ + .bank = _bank, \ + .port = _port, \ + .pins = _pins, \ + } + +static const struct tegra_gpio_port tegra234_aon_ports[] = { + TEGRA234_AON_GPIO_PORT(AA, 0, 4, 8), + TEGRA234_AON_GPIO_PORT(BB, 0, 5, 4), + TEGRA234_AON_GPIO_PORT(CC, 0, 2, 8), + TEGRA234_AON_GPIO_PORT(DD, 0, 3, 3), + TEGRA234_AON_GPIO_PORT(EE, 0, 0, 8), + TEGRA234_AON_GPIO_PORT(GG, 0, 1, 1), +}; + +static const struct tegra_gpio_soc tegra234_aon_soc = { + .num_ports = ARRAY_SIZE(tegra234_aon_ports), + .ports = tegra234_aon_ports, + .name = "tegra234-gpio-aon", + .instance = 1, + .num_irqs_per_bank = 8, +}; + +#define TEGRA241_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \ + [TEGRA241_MAIN_GPIO_PORT_##_name] = { \ + .name = #_name, \ + .bank = _bank, \ + .port = _port, \ + .pins = _pins, \ + } + +static const struct tegra_gpio_port tegra241_main_ports[] = { + TEGRA241_MAIN_GPIO_PORT(A, 0, 0, 8), + TEGRA241_MAIN_GPIO_PORT(B, 0, 1, 8), + TEGRA241_MAIN_GPIO_PORT(C, 0, 2, 2), + TEGRA241_MAIN_GPIO_PORT(D, 0, 3, 6), + TEGRA241_MAIN_GPIO_PORT(E, 0, 4, 8), + TEGRA241_MAIN_GPIO_PORT(F, 1, 0, 8), + TEGRA241_MAIN_GPIO_PORT(G, 1, 1, 8), + TEGRA241_MAIN_GPIO_PORT(H, 1, 2, 8), + TEGRA241_MAIN_GPIO_PORT(J, 1, 3, 8), + TEGRA241_MAIN_GPIO_PORT(K, 1, 4, 4), + TEGRA241_MAIN_GPIO_PORT(L, 1, 5, 6), +}; + +static const struct tegra_gpio_soc tegra241_main_soc = { + .num_ports = ARRAY_SIZE(tegra241_main_ports), + .ports = tegra241_main_ports, + .name = "tegra241-gpio", + .instance = 0, +}; + +#define TEGRA241_AON_GPIO_PORT(_name, _bank, _port, _pins) \ + [TEGRA241_AON_GPIO_PORT_##_name] = { \ + .name = #_name, \ + .bank = _bank, \ + .port = _port, \ + .pins = _pins, \ + } + +static const struct tegra_gpio_port tegra241_aon_ports[] = { + TEGRA241_AON_GPIO_PORT(AA, 0, 0, 8), + TEGRA241_AON_GPIO_PORT(BB, 0, 0, 4), +}; + +static const struct tegra_gpio_soc tegra241_aon_soc = { + .num_ports = ARRAY_SIZE(tegra241_aon_ports), + .ports = tegra241_aon_ports, + .name = "tegra241-gpio-aon", + .instance = 1, +}; + static const struct of_device_id tegra186_gpio_of_match[] = { { .compatible = "nvidia,tegra186-gpio", @@ -986,6 +1105,12 @@ static const struct of_device_id tegra186_gpio_of_match[] = { .compatible = "nvidia,tegra194-gpio-aon", .data = &tegra194_aon_soc }, { + .compatible = "nvidia,tegra234-gpio", + .data = &tegra234_main_soc + }, { + .compatible = "nvidia,tegra234-gpio-aon", + .data = &tegra234_aon_soc + }, { /* sentinel */ } }; @@ -996,6 +1121,8 @@ static const struct acpi_device_id tegra186_gpio_acpi_match[] = { { .id = "NVDA0208", .driver_data = (kernel_ulong_t)&tegra186_aon_soc }, { .id = "NVDA0308", .driver_data = (kernel_ulong_t)&tegra194_main_soc }, { .id = "NVDA0408", .driver_data = (kernel_ulong_t)&tegra194_aon_soc }, + { .id = "NVDA0508", .driver_data = (kernel_ulong_t)&tegra241_main_soc }, + { .id = "NVDA0608", .driver_data = (kernel_ulong_t)&tegra241_aon_soc }, {} }; MODULE_DEVICE_TABLE(acpi, tegra186_gpio_acpi_match); diff --git a/drivers/gpio/gpio-tps65218.c b/drivers/gpio/gpio-tps65218.c index 912382be48e1..e1d425a18854 100644 --- a/drivers/gpio/gpio-tps65218.c +++ b/drivers/gpio/gpio-tps65218.c @@ -196,9 +196,6 @@ static int tps65218_gpio_probe(struct platform_device *pdev) tps65218_gpio->tps65218 = tps65218; tps65218_gpio->gpio_chip = template_chip; tps65218_gpio->gpio_chip.parent = &pdev->dev; -#ifdef CONFIG_OF_GPIO - tps65218_gpio->gpio_chip.of_node = pdev->dev.of_node; -#endif return devm_gpiochip_add_data(&pdev->dev, &tps65218_gpio->gpio_chip, tps65218_gpio); diff --git a/drivers/gpio/gpio-tps6586x.c b/drivers/gpio/gpio-tps6586x.c index da0304b764a5..c5713524b581 100644 --- a/drivers/gpio/gpio-tps6586x.c +++ b/drivers/gpio/gpio-tps6586x.c @@ -77,6 +77,8 @@ static int tps6586x_gpio_probe(struct platform_device *pdev) struct tps6586x_platform_data *pdata; struct tps6586x_gpio *tps6586x_gpio; + device_set_node(&pdev->dev, dev_fwnode(pdev->dev.parent)); + pdata = dev_get_platdata(pdev->dev.parent); tps6586x_gpio = devm_kzalloc(&pdev->dev, sizeof(*tps6586x_gpio), GFP_KERNEL); @@ -97,9 +99,6 @@ static int tps6586x_gpio_probe(struct platform_device *pdev) tps6586x_gpio->gpio_chip.get = tps6586x_gpio_get; tps6586x_gpio->gpio_chip.to_irq = tps6586x_gpio_to_irq; -#ifdef CONFIG_OF_GPIO - tps6586x_gpio->gpio_chip.of_node = pdev->dev.parent->of_node; -#endif if (pdata && pdata->gpio_base) tps6586x_gpio->gpio_chip.base = pdata->gpio_base; else diff --git a/drivers/gpio/gpio-tps65910.c b/drivers/gpio/gpio-tps65910.c index 7fa8c841081f..321e6945f0be 100644 --- a/drivers/gpio/gpio-tps65910.c +++ b/drivers/gpio/gpio-tps65910.c @@ -111,6 +111,8 @@ static int tps65910_gpio_probe(struct platform_device *pdev) int ret; int i; + device_set_node(&pdev->dev, dev_fwnode(pdev->dev.parent)); + tps65910_gpio = devm_kzalloc(&pdev->dev, sizeof(*tps65910_gpio), GFP_KERNEL); if (!tps65910_gpio) @@ -137,9 +139,7 @@ static int tps65910_gpio_probe(struct platform_device *pdev) tps65910_gpio->gpio_chip.set = tps65910_gpio_set; tps65910_gpio->gpio_chip.get = tps65910_gpio_get; tps65910_gpio->gpio_chip.parent = &pdev->dev; -#ifdef CONFIG_OF_GPIO - tps65910_gpio->gpio_chip.of_node = tps65910->dev->of_node; -#endif + if (pdata && pdata->gpio_base) tps65910_gpio->gpio_chip.base = pdata->gpio_base; else diff --git a/drivers/gpio/gpio-ts5500.c b/drivers/gpio/gpio-ts5500.c index c91890488402..b159e92a3612 100644 --- a/drivers/gpio/gpio-ts5500.c +++ b/drivers/gpio/gpio-ts5500.c @@ -317,22 +317,19 @@ static int ts5500_dio_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; const char *name = dev_name(dev); struct ts5500_priv *priv; - struct resource *res; unsigned long flags; int ret; - res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!res) { - dev_err(dev, "missing IRQ resource\n"); - return -EINVAL; - } + ret = platform_get_irq(pdev, 0); + if (ret < 0) + return ret; priv = devm_kzalloc(dev, sizeof(struct ts5500_priv), GFP_KERNEL); if (!priv) return -ENOMEM; platform_set_drvdata(pdev, priv); - priv->hwirq = res->start; + priv->hwirq = ret; spin_lock_init(&priv->lock); priv->gpio_chip.owner = THIS_MODULE; diff --git a/drivers/gpio/gpio-twl6040.c b/drivers/gpio/gpio-twl6040.c index 648fb418d775..6c3fbf382dba 100644 --- a/drivers/gpio/gpio-twl6040.c +++ b/drivers/gpio/gpio-twl6040.c @@ -80,6 +80,8 @@ static int gpo_twl6040_probe(struct platform_device *pdev) struct twl6040 *twl6040 = dev_get_drvdata(twl6040_core_dev); int ret; + device_set_node(&pdev->dev, dev_fwnode(pdev->dev.parent)); + twl6040gpo_chip.base = -1; if (twl6040_get_revid(twl6040) < TWL6041_REV_ES2_0) @@ -88,9 +90,6 @@ static int gpo_twl6040_probe(struct platform_device *pdev) twl6040gpo_chip.ngpio = 1; /* twl6041 have 1 GPO */ twl6040gpo_chip.parent = &pdev->dev; -#ifdef CONFIG_OF_GPIO - twl6040gpo_chip.of_node = twl6040_core_dev->of_node; -#endif ret = devm_gpiochip_add_data(&pdev->dev, &twl6040gpo_chip, NULL); if (ret < 0) { diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c index e0f2b67558e7..20780c35da1b 100644 --- a/drivers/gpio/gpio-vf610.c +++ b/drivers/gpio/gpio-vf610.c @@ -298,7 +298,6 @@ static int vf610_gpio_probe(struct platform_device *pdev) } gc = &port->gc; - gc->of_node = np; gc->parent = dev; gc->label = "vf610-gpio"; gc->ngpio = VF610_GPIO_PER_PORT; diff --git a/drivers/gpio/gpio-wm831x.c b/drivers/gpio/gpio-wm831x.c index 9cf1e5ebb352..7eaf8a28638c 100644 --- a/drivers/gpio/gpio-wm831x.c +++ b/drivers/gpio/gpio-wm831x.c @@ -262,6 +262,8 @@ static int wm831x_gpio_probe(struct platform_device *pdev) struct wm831x_pdata *pdata = &wm831x->pdata; struct wm831x_gpio *wm831x_gpio; + device_set_node(&pdev->dev, dev_fwnode(pdev->dev.parent)); + wm831x_gpio = devm_kzalloc(&pdev->dev, sizeof(*wm831x_gpio), GFP_KERNEL); if (wm831x_gpio == NULL) @@ -275,9 +277,6 @@ static int wm831x_gpio_probe(struct platform_device *pdev) wm831x_gpio->gpio_chip.base = pdata->gpio_base; else wm831x_gpio->gpio_chip.base = -1; -#ifdef CONFIG_OF_GPIO - wm831x_gpio->gpio_chip.of_node = wm831x->dev->of_node; -#endif return devm_gpiochip_add_data(&pdev->dev, &wm831x_gpio->gpio_chip, wm831x_gpio); } diff --git a/drivers/gpio/gpio-xlp.c b/drivers/gpio/gpio-xlp.c index 0d94d3aef752..0199f545335f 100644 --- a/drivers/gpio/gpio-xlp.c +++ b/drivers/gpio/gpio-xlp.c @@ -6,7 +6,6 @@ #include <linux/gpio/driver.h> #include <linux/platform_device.h> -#include <linux/of_device.h> #include <linux/module.h> #include <linux/irq.h> #include <linux/interrupt.h> @@ -26,16 +25,6 @@ * * where addr is base address of the that feature register and gpio is the pin. */ -#define GPIO_OUTPUT_EN 0x00 -#define GPIO_PADDRV 0x08 -#define GPIO_INT_EN00 0x18 -#define GPIO_INT_EN10 0x20 -#define GPIO_INT_EN20 0x28 -#define GPIO_INT_EN30 0x30 -#define GPIO_INT_POL 0x38 -#define GPIO_INT_TYPE 0x40 -#define GPIO_INT_STAT 0x48 - #define GPIO_9XX_BYTESWAP 0X00 #define GPIO_9XX_CTRL 0X04 #define GPIO_9XX_OUTPUT_EN 0x14 @@ -52,14 +41,6 @@ #define GPIO_9XX_INT_TYPE 0x114 #define GPIO_9XX_INT_STAT 0x124 -#define GPIO_3XX_INT_EN00 0x18 -#define GPIO_3XX_INT_EN10 0x20 -#define GPIO_3XX_INT_EN20 0x28 -#define GPIO_3XX_INT_EN30 0x30 -#define GPIO_3XX_INT_POL 0x78 -#define GPIO_3XX_INT_TYPE 0x80 -#define GPIO_3XX_INT_STAT 0x88 - /* Interrupt type register mask */ #define XLP_GPIO_IRQ_TYPE_LVL 0x0 #define XLP_GPIO_IRQ_TYPE_EDGE 0x1 @@ -72,16 +53,6 @@ #define XLP_GPIO_IRQ_BASE 768 #define XLP_MAX_NR_GPIO 96 -/* XLP variants supported by this driver */ -enum { - XLP_GPIO_VARIANT_XLP832 = 1, - XLP_GPIO_VARIANT_XLP316, - XLP_GPIO_VARIANT_XLP208, - XLP_GPIO_VARIANT_XLP980, - XLP_GPIO_VARIANT_XLP532, - GPIO_VARIANT_VULCAN -}; - struct xlp_gpio_priv { struct gpio_chip chip; DECLARE_BITMAP(gpio_enabled_mask, XLP_MAX_NR_GPIO); @@ -257,44 +228,13 @@ static void xlp_gpio_set(struct gpio_chip *gc, unsigned gpio, int state) xlp_gpio_set_reg(priv->gpio_paddrv, gpio, state); } -static const struct of_device_id xlp_gpio_of_ids[] = { - { - .compatible = "netlogic,xlp832-gpio", - .data = (void *)XLP_GPIO_VARIANT_XLP832, - }, - { - .compatible = "netlogic,xlp316-gpio", - .data = (void *)XLP_GPIO_VARIANT_XLP316, - }, - { - .compatible = "netlogic,xlp208-gpio", - .data = (void *)XLP_GPIO_VARIANT_XLP208, - }, - { - .compatible = "netlogic,xlp980-gpio", - .data = (void *)XLP_GPIO_VARIANT_XLP980, - }, - { - .compatible = "netlogic,xlp532-gpio", - .data = (void *)XLP_GPIO_VARIANT_XLP532, - }, - { - .compatible = "brcm,vulcan-gpio", - .data = (void *)GPIO_VARIANT_VULCAN, - }, - { /* sentinel */ }, -}; -MODULE_DEVICE_TABLE(of, xlp_gpio_of_ids); - static int xlp_gpio_probe(struct platform_device *pdev) { struct gpio_chip *gc; struct gpio_irq_chip *girq; struct xlp_gpio_priv *priv; void __iomem *gpio_base; - int irq_base, irq, err; - int ngpio; - u32 soc_type; + int irq, err; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) @@ -308,62 +248,12 @@ static int xlp_gpio_probe(struct platform_device *pdev) if (irq < 0) return irq; - if (pdev->dev.of_node) { - soc_type = (uintptr_t)of_device_get_match_data(&pdev->dev); - } else { - const struct acpi_device_id *acpi_id; - - acpi_id = acpi_match_device(pdev->dev.driver->acpi_match_table, - &pdev->dev); - if (!acpi_id || !acpi_id->driver_data) { - dev_err(&pdev->dev, "Unable to match ACPI ID\n"); - return -ENODEV; - } - soc_type = (uintptr_t) acpi_id->driver_data; - } - - switch (soc_type) { - case XLP_GPIO_VARIANT_XLP832: - priv->gpio_out_en = gpio_base + GPIO_OUTPUT_EN; - priv->gpio_paddrv = gpio_base + GPIO_PADDRV; - priv->gpio_intr_stat = gpio_base + GPIO_INT_STAT; - priv->gpio_intr_type = gpio_base + GPIO_INT_TYPE; - priv->gpio_intr_pol = gpio_base + GPIO_INT_POL; - priv->gpio_intr_en = gpio_base + GPIO_INT_EN00; - ngpio = 41; - break; - case XLP_GPIO_VARIANT_XLP208: - case XLP_GPIO_VARIANT_XLP316: - priv->gpio_out_en = gpio_base + GPIO_OUTPUT_EN; - priv->gpio_paddrv = gpio_base + GPIO_PADDRV; - priv->gpio_intr_stat = gpio_base + GPIO_3XX_INT_STAT; - priv->gpio_intr_type = gpio_base + GPIO_3XX_INT_TYPE; - priv->gpio_intr_pol = gpio_base + GPIO_3XX_INT_POL; - priv->gpio_intr_en = gpio_base + GPIO_3XX_INT_EN00; - - ngpio = (soc_type == XLP_GPIO_VARIANT_XLP208) ? 42 : 57; - break; - case XLP_GPIO_VARIANT_XLP980: - case XLP_GPIO_VARIANT_XLP532: - case GPIO_VARIANT_VULCAN: - priv->gpio_out_en = gpio_base + GPIO_9XX_OUTPUT_EN; - priv->gpio_paddrv = gpio_base + GPIO_9XX_PADDRV; - priv->gpio_intr_stat = gpio_base + GPIO_9XX_INT_STAT; - priv->gpio_intr_type = gpio_base + GPIO_9XX_INT_TYPE; - priv->gpio_intr_pol = gpio_base + GPIO_9XX_INT_POL; - priv->gpio_intr_en = gpio_base + GPIO_9XX_INT_EN00; - - if (soc_type == XLP_GPIO_VARIANT_XLP980) - ngpio = 66; - else if (soc_type == XLP_GPIO_VARIANT_XLP532) - ngpio = 67; - else - ngpio = 70; - break; - default: - dev_err(&pdev->dev, "Unknown Processor type!\n"); - return -ENODEV; - } + priv->gpio_out_en = gpio_base + GPIO_9XX_OUTPUT_EN; + priv->gpio_paddrv = gpio_base + GPIO_9XX_PADDRV; + priv->gpio_intr_stat = gpio_base + GPIO_9XX_INT_STAT; + priv->gpio_intr_type = gpio_base + GPIO_9XX_INT_TYPE; + priv->gpio_intr_pol = gpio_base + GPIO_9XX_INT_POL; + priv->gpio_intr_en = gpio_base + GPIO_9XX_INT_EN00; bitmap_zero(priv->gpio_enabled_mask, XLP_MAX_NR_GPIO); @@ -373,8 +263,7 @@ static int xlp_gpio_probe(struct platform_device *pdev) gc->label = dev_name(&pdev->dev); gc->base = 0; gc->parent = &pdev->dev; - gc->ngpio = ngpio; - gc->of_node = pdev->dev.of_node; + gc->ngpio = 70; gc->direction_output = xlp_gpio_dir_output; gc->direction_input = xlp_gpio_dir_input; gc->set = xlp_gpio_set; @@ -382,19 +271,6 @@ static int xlp_gpio_probe(struct platform_device *pdev) spin_lock_init(&priv->lock); - /* XLP(MIPS) has fixed range for GPIO IRQs, Vulcan(ARM64) does not */ - if (soc_type != GPIO_VARIANT_VULCAN) { - irq_base = devm_irq_alloc_descs(&pdev->dev, -1, - XLP_GPIO_IRQ_BASE, - gc->ngpio, 0); - if (irq_base < 0) { - dev_err(&pdev->dev, "Failed to allocate IRQ numbers\n"); - return irq_base; - } - } else { - irq_base = 0; - } - girq = &gc->irq; girq->chip = &xlp_gpio_irq_chip; girq->parent_handler = xlp_gpio_generic_handler; @@ -405,7 +281,7 @@ static int xlp_gpio_probe(struct platform_device *pdev) if (!girq->parents) return -ENOMEM; girq->parents[0] = irq; - girq->first = irq_base; + girq->first = 0; girq->default_type = IRQ_TYPE_NONE; girq->handler = handle_level_irq; @@ -420,8 +296,8 @@ static int xlp_gpio_probe(struct platform_device *pdev) #ifdef CONFIG_ACPI static const struct acpi_device_id xlp_gpio_acpi_match[] = { - { "BRCM9006", GPIO_VARIANT_VULCAN }, - { "CAV9006", GPIO_VARIANT_VULCAN }, + { "BRCM9006" }, + { "CAV9006" }, {}, }; MODULE_DEVICE_TABLE(acpi, xlp_gpio_acpi_match); @@ -430,7 +306,6 @@ MODULE_DEVICE_TABLE(acpi, xlp_gpio_acpi_match); static struct platform_driver xlp_gpio_driver = { .driver = { .name = "xlp-gpio", - .of_match_table = xlp_gpio_of_ids, .acpi_match_table = ACPI_PTR(xlp_gpio_acpi_match), }, .probe = xlp_gpio_probe, diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 985e8589c58b..c0f6a25c3279 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -219,14 +219,13 @@ EXPORT_SYMBOL_GPL(acpi_gpio_get_io_resource); static void acpi_gpiochip_request_irq(struct acpi_gpio_chip *acpi_gpio, struct acpi_gpio_event *event) { + struct device *parent = acpi_gpio->chip->parent; int ret, value; ret = request_threaded_irq(event->irq, NULL, event->handler, event->irqflags | IRQF_ONESHOT, "ACPI:Event", event); if (ret) { - dev_err(acpi_gpio->chip->parent, - "Failed to setup interrupt handler for %d\n", - event->irq); + dev_err(parent, "Failed to setup interrupt handler for %d\n", event->irq); return; } @@ -347,8 +346,7 @@ static bool acpi_gpio_in_ignore_list(const char *controller_in, int pin_in) return false; err: - pr_err_once("Error invalid value for gpiolib_acpi.ignore_wake: %s\n", - ignore_wake); + pr_err_once("Error: Invalid value for gpiolib_acpi.ignore_wake: %s\n", ignore_wake); return false; } @@ -579,36 +577,24 @@ void acpi_dev_remove_driver_gpios(struct acpi_device *adev) } EXPORT_SYMBOL_GPL(acpi_dev_remove_driver_gpios); -static void devm_acpi_dev_release_driver_gpios(struct device *dev, void *res) +static void acpi_dev_release_driver_gpios(void *adev) { - acpi_dev_remove_driver_gpios(ACPI_COMPANION(dev)); + acpi_dev_remove_driver_gpios(adev); } int devm_acpi_dev_add_driver_gpios(struct device *dev, const struct acpi_gpio_mapping *gpios) { - void *res; + struct acpi_device *adev = ACPI_COMPANION(dev); int ret; - res = devres_alloc(devm_acpi_dev_release_driver_gpios, 0, GFP_KERNEL); - if (!res) - return -ENOMEM; - - ret = acpi_dev_add_driver_gpios(ACPI_COMPANION(dev), gpios); - if (ret) { - devres_free(res); + ret = acpi_dev_add_driver_gpios(adev, gpios); + if (ret) return ret; - } - devres_add(dev, res); - return 0; -} -EXPORT_SYMBOL_GPL(devm_acpi_dev_add_driver_gpios); -void devm_acpi_dev_remove_driver_gpios(struct device *dev) -{ - WARN_ON(devres_release(dev, devm_acpi_dev_release_driver_gpios, NULL, NULL)); + return devm_add_action_or_reset(dev, acpi_dev_release_driver_gpios, adev); } -EXPORT_SYMBOL_GPL(devm_acpi_dev_remove_driver_gpios); +EXPORT_SYMBOL_GPL(devm_acpi_dev_add_driver_gpios); static bool acpi_get_driver_gpio_data(struct acpi_device *adev, const char *name, int index, @@ -941,7 +927,7 @@ struct gpio_desc *acpi_find_gpio(struct device *dev, if (info.gpioint && (*dflags == GPIOD_OUT_LOW || *dflags == GPIOD_OUT_HIGH)) { - dev_dbg(dev, "refusing GpioInt() entry when doing GPIOD_OUT_* lookup\n"); + dev_dbg(&adev->dev, "refusing GpioInt() entry when doing GPIOD_OUT_* lookup\n"); return ERR_PTR(-ENOENT); } @@ -1056,10 +1042,17 @@ int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, int ind irq_flags = acpi_dev_get_irq_type(info.triggering, info.polarity); - /* Set type if specified and different than the current one */ - if (irq_flags != IRQ_TYPE_NONE && - irq_flags != irq_get_trigger_type(irq)) - irq_set_irq_type(irq, irq_flags); + /* + * If the IRQ is not already in use then set type + * if specified and different than the current one. + */ + if (can_request_irq(irq, irq_flags)) { + if (irq_flags != IRQ_TYPE_NONE && + irq_flags != irq_get_trigger_type(irq)) + irq_set_irq_type(irq, irq_flags); + } else { + dev_dbg(&adev->dev, "IRQ %d already in use\n", irq); + } return irq; } @@ -1346,6 +1339,9 @@ void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev) /* Set default fwnode to parent's one if present */ if (gc->parent) ACPI_COMPANION_SET(&gdev->dev, ACPI_COMPANION(gc->parent)); + + if (gc->fwnode) + device_set_node(&gdev->dev, gc->fwnode); } static int acpi_gpio_package_count(const union acpi_object *obj) diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 0ad288ab6262..91dcf2c6cdd8 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -1046,6 +1046,9 @@ void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev) if (gc->parent) gdev->dev.of_node = gc->parent->of_node; + if (gc->fwnode) + gc->of_node = to_of_node(gc->fwnode); + /* If the gpiochip has an assigned OF node this takes precedence */ if (gc->of_node) gdev->dev.of_node = gc->of_node; diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index abfbf546d159..3859911b61e9 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -422,8 +422,16 @@ static int devprop_gpiochip_set_names(struct gpio_chip *chip) if (count > chip->ngpio) count = chip->ngpio; - for (i = 0; i < count; i++) - gdev->descs[i].name = names[chip->offset + i]; + for (i = 0; i < count; i++) { + /* + * Allow overriding "fixed" names provided by the GPIO + * provider. The "fixed" names are more often than not + * generic and less informative than the names given in + * device properties. + */ + if (names[chip->offset + i] && names[chip->offset + i][0]) + gdev->descs[i].name = names[chip->offset + i]; + } kfree(names); @@ -593,12 +601,18 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, struct lock_class_key *lock_key, struct lock_class_key *request_key) { - struct fwnode_handle *fwnode = gc->parent ? dev_fwnode(gc->parent) : NULL; - unsigned long flags; - int ret = 0; - unsigned i; - int base = gc->base; + struct fwnode_handle *fwnode = NULL; struct gpio_device *gdev; + unsigned long flags; + int base = gc->base; + unsigned int i; + int ret = 0; + u32 ngpios; + + if (gc->fwnode) + fwnode = gc->fwnode; + else if (gc->parent) + fwnode = dev_fwnode(gc->parent); /* * First: allocate and populate the internal stat container, and @@ -646,6 +660,26 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, goto err_free_dev_name; } + /* + * Try the device properties if the driver didn't supply the number + * of GPIO lines. + */ + if (gc->ngpio == 0) { + ret = device_property_read_u32(&gdev->dev, "ngpios", &ngpios); + if (ret == -ENODATA) + /* + * -ENODATA means that there is no property found and + * we want to issue the error message to the user. + * Besides that, we want to return different error code + * to state that supplied value is not valid. + */ + ngpios = 0; + else if (ret) + goto err_free_descs; + + gc->ngpio = ngpios; + } + if (gc->ngpio == 0) { chip_err(gc, "tried to insert a GPIO chip with zero lines\n"); ret = -EINVAL; @@ -708,10 +742,12 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, INIT_LIST_HEAD(&gdev->pin_ranges); #endif - if (gc->names) + if (gc->names) { ret = gpiochip_set_desc_names(gc); - else - ret = devprop_gpiochip_set_names(gc); + if (ret) + goto err_remove_from_list; + } + ret = devprop_gpiochip_set_names(gc); if (ret) goto err_remove_from_list; @@ -3487,11 +3523,7 @@ EXPORT_SYMBOL_GPL(gpiod_set_array_value_cansleep); */ void gpiod_add_lookup_table(struct gpiod_lookup_table *table) { - mutex_lock(&gpio_lookup_lock); - - list_add_tail(&table->list, &gpio_lookup_list); - - mutex_unlock(&gpio_lookup_lock); + gpiod_add_lookup_tables(&table, 1); } EXPORT_SYMBOL_GPL(gpiod_add_lookup_table); @@ -3540,6 +3572,17 @@ void gpiod_add_hogs(struct gpiod_hog *hogs) } EXPORT_SYMBOL_GPL(gpiod_add_hogs); +void gpiod_remove_hogs(struct gpiod_hog *hogs) +{ + struct gpiod_hog *hog; + + mutex_lock(&gpio_machine_hogs_mutex); + for (hog = &hogs[0]; hog->chip_label; hog++) + list_del(&hog->list); + mutex_unlock(&gpio_machine_hogs_mutex); +} +EXPORT_SYMBOL_GPL(gpiod_remove_hogs); + static struct gpiod_lookup_table *gpiod_find_lookup_table(struct device *dev) { const char *dev_id = dev ? dev_name(dev) : NULL; |