diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/gpio/Makefile | 2 | ||||
| -rw-r--r-- | drivers/gpio/devres.c | 3 | ||||
| -rw-r--r-- | drivers/gpio/gpio-em.c | 418 | ||||
| -rw-r--r-- | drivers/gpio/gpio-nomadik.c | 1187 | ||||
| -rw-r--r-- | drivers/gpio/gpio-omap.c | 9 | ||||
| -rw-r--r-- | drivers/gpio/gpio-pch.c | 57 | ||||
| -rw-r--r-- | drivers/gpio/gpio-pxa.c | 137 | ||||
| -rw-r--r-- | drivers/gpio/gpio-samsung.c | 18 | ||||
| -rw-r--r-- | drivers/gpio/gpio-tegra.c | 39 |
10 files changed, 607 insertions, 1269 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index e03653d6935..eb80ba30045 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -91,6 +91,12 @@ config GPIO_IT8761E help Say yes here to support GPIO functionality of IT8761E super I/O chip. +config GPIO_EM + tristate "Emma Mobile GPIO" + depends on ARM + help + Say yes here to support GPIO on Renesas Emma Mobile SoCs. + config GPIO_EP93XX def_bool y depends on ARCH_EP93XX diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 007f54bd008..708ffb2165e 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_GPIO_BT8XX) += gpio-bt8xx.o obj-$(CONFIG_GPIO_CS5535) += gpio-cs5535.o obj-$(CONFIG_GPIO_DA9052) += gpio-da9052.o obj-$(CONFIG_ARCH_DAVINCI) += gpio-davinci.o +obj-$(CONFIG_GPIO_EM) += gpio-em.o obj-$(CONFIG_GPIO_EP93XX) += gpio-ep93xx.o obj-$(CONFIG_GPIO_GE_FPGA) += gpio-ge.o obj-$(CONFIG_GPIO_IT8761E) += gpio-it8761e.o @@ -36,7 +37,6 @@ obj-$(CONFIG_GPIO_MSM_V1) += gpio-msm-v1.o obj-$(CONFIG_GPIO_MSM_V2) += gpio-msm-v2.o obj-$(CONFIG_GPIO_MXC) += gpio-mxc.o obj-$(CONFIG_GPIO_MXS) += gpio-mxs.o -obj-$(CONFIG_PLAT_NOMADIK) += gpio-nomadik.o obj-$(CONFIG_ARCH_OMAP) += gpio-omap.o obj-$(CONFIG_GPIO_PCA953X) += gpio-pca953x.o obj-$(CONFIG_GPIO_PCF857X) += gpio-pcf857x.o diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c index 3dd29399cef..8950f6261bb 100644 --- a/drivers/gpio/devres.c +++ b/drivers/gpio/devres.c @@ -83,8 +83,7 @@ EXPORT_SYMBOL(devm_gpio_request); void devm_gpio_free(struct device *dev, unsigned int gpio) { - WARN_ON(devres_destroy(dev, devm_gpio_release, devm_gpio_match, + WARN_ON(devres_release(dev, devm_gpio_release, devm_gpio_match, &gpio)); - gpio_free(gpio); } EXPORT_SYMBOL(devm_gpio_free); diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c new file mode 100644 index 00000000000..150d9768811 --- /dev/null +++ b/drivers/gpio/gpio-em.c @@ -0,0 +1,418 @@ +/* + * Emma Mobile GPIO Support - GIO + * + * Copyright (C) 2012 Magnus Damm + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> +#include <linux/bitops.h> +#include <linux/err.h> +#include <linux/gpio.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/platform_data/gpio-em.h> + +struct em_gio_priv { + void __iomem *base0; + void __iomem *base1; + unsigned int irq_base; + spinlock_t sense_lock; + struct platform_device *pdev; + struct gpio_chip gpio_chip; + struct irq_chip irq_chip; + struct irq_domain *irq_domain; +}; + +#define GIO_E1 0x00 +#define GIO_E0 0x04 +#define GIO_EM 0x04 +#define GIO_OL 0x08 +#define GIO_OH 0x0c +#define GIO_I 0x10 +#define GIO_IIA 0x14 +#define GIO_IEN 0x18 +#define GIO_IDS 0x1c +#define GIO_IIM 0x1c +#define GIO_RAW 0x20 +#define GIO_MST 0x24 +#define GIO_IIR 0x28 + +#define GIO_IDT0 0x40 +#define GIO_IDT1 0x44 +#define GIO_IDT2 0x48 +#define GIO_IDT3 0x4c +#define GIO_RAWBL 0x50 +#define GIO_RAWBH 0x54 +#define GIO_IRBL 0x58 +#define GIO_IRBH 0x5c + +#define GIO_IDT(n) (GIO_IDT0 + ((n) * 4)) + +static inline unsigned long em_gio_read(struct em_gio_priv *p, int offs) +{ + if (offs < GIO_IDT0) + return ioread32(p->base0 + offs); + else + return ioread32(p->base1 + (offs - GIO_IDT0)); +} + +static inline void em_gio_write(struct em_gio_priv *p, int offs, + unsigned long value) +{ + if (offs < GIO_IDT0) + iowrite32(value, p->base0 + offs); + else + iowrite32(value, p->base1 + (offs - GIO_IDT0)); +} + +static inline struct em_gio_priv *irq_to_priv(struct irq_data *d) +{ + struct irq_chip *chip = irq_data_get_irq_chip(d); + return container_of(chip, struct em_gio_priv, irq_chip); +} + +static void em_gio_irq_disable(struct irq_data *d) +{ + struct em_gio_priv *p = irq_to_priv(d); + + em_gio_write(p, GIO_IDS, BIT(irqd_to_hwirq(d))); +} + +static void em_gio_irq_enable(struct irq_data *d) +{ + struct em_gio_priv *p = irq_to_priv(d); + + em_gio_write(p, GIO_IEN, BIT(irqd_to_hwirq(d))); +} + +#define GIO_ASYNC(x) (x + 8) + +static unsigned char em_gio_sense_table[IRQ_TYPE_SENSE_MASK + 1] = { + [IRQ_TYPE_EDGE_RISING] = GIO_ASYNC(0x00), + [IRQ_TYPE_EDGE_FALLING] = GIO_ASYNC(0x01), + [IRQ_TYPE_LEVEL_HIGH] = GIO_ASYNC(0x02), + [IRQ_TYPE_LEVEL_LOW] = GIO_ASYNC(0x03), + [IRQ_TYPE_EDGE_BOTH] = GIO_ASYNC(0x04), +}; + +static int em_gio_irq_set_type(struct irq_data *d, unsigned int type) +{ + unsigned char value = em_gio_sense_table[type & IRQ_TYPE_SENSE_MASK]; + struct em_gio_priv *p = irq_to_priv(d); + unsigned int reg, offset, shift; + unsigned long flags; + unsigned long tmp; + + if (!value) + return -EINVAL; + + offset = irqd_to_hwirq(d); + + pr_debug("gio: sense irq = %d, mode = %d\n", offset, value); + + /* 8 x 4 bit fields in 4 IDT registers */ + reg = GIO_IDT(offset >> 3); + shift = (offset & 0x07) << 4; + + spin_lock_irqsave(&p->sense_lock, flags); + + /* disable the interrupt in IIA */ + tmp = em_gio_read(p, GIO_IIA); + tmp &= ~BIT(offset); + em_gio_write(p, GIO_IIA, tmp); + + /* change the sense setting in IDT */ + tmp = em_gio_read(p, reg); + tmp &= ~(0xf << shift); + tmp |= value << shift; + em_gio_write(p, reg, tmp); + + /* clear pending interrupts */ + em_gio_write(p, GIO_IIR, BIT(offset)); + + /* enable the interrupt in IIA */ + tmp = em_gio_read(p, GIO_IIA); + tmp |= BIT(offset); + em_gio_write(p, GIO_IIA, tmp); + + spin_unlock_irqrestore(&p->sense_lock, flags); + + return 0; +} + +static irqreturn_t em_gio_irq_handler(int irq, void *dev_id) +{ + struct em_gio_priv *p = dev_id; + unsigned long pending; + unsigned int offset, irqs_handled = 0; + + while ((pending = em_gio_read(p, GIO_MST))) { + offset = __ffs(pending); + em_gio_write(p, GIO_IIR, BIT(offset)); + generic_handle_irq(irq_find_mapping(p->irq_domain, offset)); + irqs_handled++; + } + + return irqs_handled ? IRQ_HANDLED : IRQ_NONE; +} + +static inline struct em_gio_priv *gpio_to_priv(struct gpio_chip *chip) +{ + return container_of(chip, struct em_gio_priv, gpio_chip); +} + +static int em_gio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + em_gio_write(gpio_to_priv(chip), GIO_E0, BIT(offset)); + return 0; +} + +static int em_gio_get(struct gpio_chip *chip, unsigned offset) +{ + return (int)(em_gio_read(gpio_to_priv(chip), GIO_I) & BIT(offset)); +} + +static void __em_gio_set(struct gpio_chip *chip, unsigned int reg, + unsigned shift, int value) +{ + /* upper 16 bits contains mask and lower 16 actual value */ + em_gio_write(gpio_to_priv(chip), reg, + (1 << (shift + 16)) | (value << shift)); +} + +static void em_gio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + /* output is split into two registers */ + if (offset < 16) + __em_gio_set(chip, GIO_OL, offset, value); + else + __em_gio_set(chip, GIO_OH, offset - 16, value); +} + +static int em_gio_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + /* write GPIO value to output before selecting output mode of pin */ + em_gio_set(chip, offset, value); + em_gio_write(gpio_to_priv(chip), GIO_E1, BIT(offset)); + return 0; +} + +static int em_gio_to_irq(struct gpio_chip *chip, unsigned offset) +{ + return irq_find_mapping(gpio_to_priv(chip)->irq_domain, offset); +} + +static int em_gio_irq_domain_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + struct em_gio_priv *p = h->host_data; + + pr_debug("gio: map hw irq = %d, virq = %d\n", (int)hw, virq); + + irq_set_chip_data(virq, h->host_data); + irq_set_chip_and_handler(virq, &p->irq_chip, handle_level_irq); + set_irq_flags(virq, IRQF_VALID); /* kill me now */ + return 0; +} + +static struct irq_domain_ops em_gio_irq_domain_ops = { + .map = em_gio_irq_domain_map, +}; + +static int __devinit em_gio_irq_domain_init(struct em_gio_priv *p) +{ + struct platform_device *pdev = p->pdev; + struct gpio_em_config *pdata = pdev->dev.platform_data; + + p->irq_base = irq_alloc_descs(pdata->irq_base, 0, + pdata->number_of_pins, numa_node_id()); + if (IS_ERR_VALUE(p->irq_base)) { + dev_err(&pdev->dev, "cannot get irq_desc\n"); + return -ENXIO; + } + pr_debug("gio: hw base = %d, nr = %d, sw base = %d\n", + pdata->gpio_base, pdata->number_of_pins, p->irq_base); + + p->irq_domain = irq_domain_add_legacy(pdev->dev.of_node, + pdata->number_of_pins, + p->irq_base, 0, + &em_gio_irq_domain_ops, p); + if (!p->irq_domain) { + irq_free_descs(p->irq_base, pdata->number_of_pins); + return -ENXIO; + } + + return 0; +} + +static void __devexit em_gio_irq_domain_cleanup(struct em_gio_priv *p) +{ + struct gpio_em_config *pdata = p->pdev->dev.platform_data; + + irq_free_descs(p->irq_base, pdata->number_of_pins); + /* FIXME: irq domain wants to be freed! */ +} + +static int __devinit em_gio_probe(struct platform_device *pdev) +{ + struct gpio_em_config *pdata = pdev->dev.platform_data; + struct em_gio_priv *p; + struct resource *io[2], *irq[2]; + struct gpio_chip *gpio_chip; + struct irq_chip *irq_chip; + const char *name = dev_name(&pdev->dev); + int ret; + + p = kzalloc(sizeof(*p), GFP_KERNEL); + if (!p) { + dev_err(&pdev->dev, "failed to allocate driver data\n"); + ret = -ENOMEM; + goto err0; + } + + p->pdev = pdev; + platform_set_drvdata(pdev, p); + spin_lock_init(&p->sense_lock); + + io[0] = platform_get_resource(pdev, IORESOURCE_MEM, 0); + io[1] = platform_get_resource(pdev, IORESOURCE_MEM, 1); + irq[0] = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + irq[1] = platform_get_resource(pdev, IORESOURCE_IRQ, 1); + + if (!io[0] || !io[1] || !irq[0] || !irq[1] || !pdata) { + dev_err(&pdev->dev, "missing IRQ, IOMEM or configuration\n"); + ret = -EINVAL; + goto err1; + } + + p->base0 = ioremap_nocache(io[0]->start, resource_size(io[0])); + if (!p->base0) { + dev_err(&pdev->dev, "failed to remap low I/O memory\n"); + ret = -ENXIO; + goto err1; + } + + p->base1 = ioremap_nocache(io[1]->start, resource_size(io[1])); + if (!p->base1) { + dev_err(&pdev->dev, "failed to remap high I/O memory\n"); + ret = -ENXIO; + goto err2; + } + + gpio_chip = &p->gpio_chip; + gpio_chip->direction_input = em_gio_direction_input; + gpio_chip->get = em_gio_get; + gpio_chip->direction_output = em_gio_direction_output; + gpio_chip->set = em_gio_set; + gpio_chip->to_irq = em_gio_to_irq; + gpio_chip->label = name; + gpio_chip->owner = THIS_MODULE; + gpio_chip->base = pdata->gpio_base; + gpio_chip->ngpio = pdata->number_of_pins; + + irq_chip = &p->irq_chip; + irq_chip->name = name; + irq_chip->irq_mask = em_gio_irq_disable; + irq_chip->irq_unmask = em_gio_irq_enable; + irq_chip->irq_enable = em_gio_irq_enable; + irq_chip->irq_disable = em_gio_irq_disable; + irq_chip->irq_set_type = em_gio_irq_set_type; + irq_chip->flags = IRQCHIP_SKIP_SET_WAKE; + + ret = em_gio_irq_domain_init(p); + if (ret) { + dev_err(&pdev->dev, "cannot initialize irq domain\n"); + goto err3; + } + + if (request_irq(irq[0]->start, em_gio_irq_handler, 0, name, p)) { + dev_err(&pdev->dev, "failed to request low IRQ\n"); + ret = -ENOENT; + goto err4; + } + + if (request_irq(irq[1]->start, em_gio_irq_handler, 0, name, p)) { + dev_err(&pdev->dev, "failed to request high IRQ\n"); + ret = -ENOENT; + goto err5; + } + + ret = gpiochip_add(gpio_chip); + if (ret) { + dev_err(&pdev->dev, "failed to add GPIO controller\n"); + goto err6; + } + return 0; + +err6: + free_irq(irq[1]->start, pdev); +err5: + free_irq(irq[0]->start, pdev); +err4: + em_gio_irq_domain_cleanup(p); +err3: + iounmap(p->base1); +err2: + iounmap(p->base0); +err1: + kfree(p); +err0: + return ret; +} + +static int __devexit em_gio_remove(struct platform_device *pdev) +{ + struct em_gio_priv *p = platform_get_drvdata(pdev); + struct resource *irq[2]; + int ret; + + ret = gpiochip_remove(&p->gpio_chip); + if (ret) + return ret; + + irq[0] = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + irq[1] = platform_get_resource(pdev, IORESOURCE_IRQ, 1); + + free_irq(irq[1]->start, pdev); + free_irq(irq[0]->start, pdev); + em_gio_irq_domain_cleanup(p); + iounmap(p->base1); + iounmap(p->base0); + kfree(p); + return 0; +} + +static struct platform_driver em_gio_device_driver = { + .probe = em_gio_probe, + .remove = __devexit_p(em_gio_remove), + .driver = { + .name = "em_gio", + } +}; + +module_platform_driver(em_gio_device_driver); + +MODULE_AUTHOR("Magnus Damm"); +MODULE_DESCRIPTION("Renesas Emma Mobile GIO Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpio/gpio-nomadik.c b/drivers/gpio/gpio-nomadik.c deleted file mode 100644 index 839624f9fe6..00000000000 --- a/drivers/gpio/gpio-nomadik.c +++ /dev/null @@ -1,1187 +0,0 @@ -/* - * Generic GPIO driver for logic cells found in the Nomadik SoC - * - * Copyright (C) 2008,2009 STMicroelectronics - * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it> - * Rewritten based on work by Prafulla WADASKAR <prafulla.wadaskar@st.com> - * Copyright (C) 2011 Linus Walleij <linus.walleij@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/gpio.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/slab.h> - -#include <asm/mach/irq.h> - -#include <plat/pincfg.h> -#include <plat/gpio-nomadik.h> -#include <mach/hardware.h> -#include <asm/gpio.h> - -/* - * The GPIO module in the Nomadik family of Systems-on-Chip is an - * AMBA device, managing 32 pins and alternate functions. The logic block - * is currently used in the Nomadik and ux500. - * - * Symbols in this file are called "nmk_gpio" for "nomadik gpio" - */ - -#define NMK_GPIO_PER_CHIP 32 - -struct nmk_gpio_chip { - struct gpio_chip chip; - void __iomem *addr; - struct clk *clk; - unsigned int bank; - unsigned int parent_irq; - int secondary_parent_irq; - u32 (*get_secondary_status)(unsigned int bank); - void (*set_ioforce)(bool enable); - spinlock_t lock; - bool sleepmode; - /* Keep track of configured edges */ - u32 edge_rising; - u32 edge_falling; - u32 real_wake; - u32 rwimsc; - u32 fwimsc; - u32 slpm; - u32 pull_up; -}; - -static struct nmk_gpio_chip * -nmk_gpio_chips[DIV_ROUND_UP(ARCH_NR_GPIOS, NMK_GPIO_PER_CHIP)]; - -static DEFINE_SPINLOCK(nmk_gpio_slpm_lock); - -#define NUM_BANKS ARRAY_SIZE(nmk_gpio_chips) - -static void __nmk_gpio_set_mode(struct nmk_gpio_chip *nmk_chip, - unsigned offset, int gpio_mode) -{ - u32 bit = 1 << offset; - u32 afunc, bfunc; - - afunc = readl(nmk_chip->addr + NMK_GPIO_AFSLA) & ~bit; - bfunc = readl(nmk_chip->addr + NMK_GPIO_AFSLB) & ~bit; - if (gpio_mode & NMK_GPIO_ALT_A) - afunc |= bit; - if (gpio_mode & NMK_GPIO_ALT_B) - bfunc |= bit; - writel(afunc, nmk_chip->addr + NMK_GPIO_AFSLA); - writel(bfunc, nmk_chip->addr + NMK_GPIO_AFSLB); -} - -static void __nmk_gpio_set_slpm(struct nmk_gpio_chip *nmk_chip, - unsigned offset, enum nmk_gpio_slpm mode) -{ - u32 bit = 1 << offset; - u32 slpm; - - slpm = readl(nmk_chip->addr + NMK_GPIO_SLPC); - if (mode == NMK_GPIO_SLPM_NOCHANGE) - slpm |= bit; - else - slpm &= ~bit; - writel(slpm, nmk_chip->addr + NMK_GPIO_SLPC); -} - -static void __nmk_gpio_set_pull(struct nmk_gpio_chip *nmk_chip, - unsigned offset, enum nmk_gpio_pull pull) -{ - u32 bit = 1 << offset; - u32 pdis; - - pdis = readl(nmk_chip->addr + NMK_GPIO_PDIS); - if (pull == NMK_GPIO_PULL_NONE) { - pdis |= bit; - nmk_chip->pull_up &= ~bit; - } else { - pdis &= ~bit; - } - - writel(pdis, nmk_chip->addr + NMK_GPIO_PDIS); - - if (pull == NMK_GPIO_PULL_UP) { - nmk_chip->pull_up |= bit; - writel(bit, nmk_chip->addr + NMK_GPIO_DATS); - } else if (pull == NMK_GPIO_PULL_DOWN) { - nmk_chip->pull_up &= ~bit; - writel(bit, nmk_chip->addr + NMK_GPIO_DATC); - } -} - -static void __nmk_gpio_make_input(struct nmk_gpio_chip *nmk_chip, - unsigned offset) -{ - writel(1 << offset, nmk_chip->addr + NMK_GPIO_DIRC); -} - -static void __nmk_gpio_set_output(struct nmk_gpio_chip *nmk_chip, - unsigned offset, int val) -{ - if (val) - writel(1 << offset, nmk_chip->addr + NMK_GPIO_DATS); - else - writel(1 << offset, nmk_chip->addr + NMK_GPIO_DATC); -} - -static void __nmk_gpio_make_output(struct nmk_gpio_chip *nmk_chip, - unsigned offset, int val) -{ - writel(1 << offset, nmk_chip->addr + NMK_GPIO_DIRS); - __nmk_gpio_set_output(nmk_chip, offset, val); -} - -static void __nmk_gpio_set_mode_safe(struct nmk_gpio_chip *nmk_chip, - unsigned offset, int gpio_mode, - bool glitch) -{ - u32 rwimsc = readl(nmk_chip->addr + NMK_GPIO_RWIMSC); - u32 fwimsc = readl(nmk_chip->addr + NMK_GPIO_FWIMSC); - - if (glitch && nmk_chip->set_ioforce) { - u32 bit = BIT(offset); - - /* Prevent spurious wakeups */ - writel(rwimsc & ~bit, nmk_chip->addr + NMK_GPIO_RWIMSC); - writel(fwimsc & ~bit, nmk_chip->addr + NMK_GPIO_FWIMSC); - - nmk_chip->set_ioforce(true); - } - - __nmk_gpio_set_mode(nmk_chip, offset, gpio_mode); - - if (glitch && nmk_chip->set_ioforce) { - nmk_chip->set_ioforce(false); - - writel(rwimsc, nmk_chip->addr + NMK_GPIO_RWIMSC); - writel(fwimsc, nmk_chip->addr + NMK_GPIO_FWIMSC); - } -} - -static void __nmk_config_pin(struct nmk_gpio_chip *nmk_chip, unsigned offset, - pin_cfg_t cfg, bool sleep, unsigned int *slpmregs) -{ - static const char *afnames[] = { - [NMK_GPIO_ALT_GPIO] = "GPIO", - [NMK_GPIO_ALT_A] = "A", - [NMK_GPIO_ALT_B] = "B", - [NMK_GPIO_ALT_C] = "C" - }; - static const char *pullnames[] = { - [NMK_GPIO_PULL_NONE] = "none", - [NMK_GPIO_PULL_UP] = "up", - [NMK_GPIO_PULL_DOWN] = "down", - [3] /* illegal */ = "??" - }; - static const char *slpmnames[] = { - [NMK_GPIO_SLPM_INPUT] = "input/wakeup", - [NMK_GPIO_SLPM_NOCHANGE] = "no-change/no-wakeup", - }; - - int pin = PIN_NUM(cfg); - int pull = PIN_PULL(cfg); - int af = PIN_ALT(cfg); - int slpm = PIN_SLPM(cfg); - int output = PIN_DIR(cfg); - int val = PIN_VAL(cfg); - bool glitch = af == NMK_GPIO_ALT_C; - - dev_dbg(nmk_chip->chip.dev, "pin %d [%#lx]: af %s, pull %s, slpm %s (%s%s)\n", - pin, cfg, afnames[af], pullnames[pull], slpmnames[slpm], - output ? "output " : "input", - output ? (val ? "high" : "low") : ""); - - if (sleep) { - int slpm_pull = PIN_SLPM_PULL(cfg); - int slpm_output = PIN_SLPM_DIR(cfg); - int slpm_val = PIN_SLPM_VAL(cfg); - - af = NMK_GPIO_ALT_GPIO; - - /* - * The SLPM_* values are normal values + 1 to allow zero to - * mean "same as normal". - */ - if (slpm_pull) - pull = slpm_pull - 1; - if (slpm_output) - output = slpm_output - 1; - if (slpm_val) - val = slpm_val - 1; - - dev_dbg(nmk_chip->chip.dev, "pin %d: sleep pull %s, dir %s, val %s\n", - pin, - slpm_pull ? pullnames[pull] : "same", - slpm_output ? (output ? "output" : "input") : "same", - slpm_val ? (val ? "high" : "low") : "same"); - } - - if (output) - __nmk_gpio_make_output(nmk_chip, offset, val); - else { - __nmk_gpio_make_input(nmk_chip, offset); - __nmk_gpio_set_pull(nmk_chip, offset, pull); - } - - /* - * If we've backed up the SLPM registers (glitch workaround), modify - * the backups since they will be restored. - */ - if (slpmregs) { - if (slpm == NMK_GPIO_SLPM_NOCHANGE) - slpmregs[nmk_chip->bank] |= BIT(offset); - else - slpmregs[nmk_chip->bank] &= ~BIT(offset); - } else - __nmk_gpio_set_slpm(nmk_chip, offset, slpm); - - __nmk_gpio_set_mode_safe(nmk_chip, offset, af, glitch); -} - -/* - * Safe sequence used to switch IOs between GPIO and Alternate-C mode: - * - Save SLPM registers - * - Set SLPM=0 for the IOs you want to switch and others to 1 - * - Configure the GPIO registers for the IOs that are being switched - * - Set IOFORCE=1 - * - Modify the AFLSA/B registers for the IOs that are being switched - * - Set IOFORCE=0 - * - Restore SLPM registers - * - Any spurious wake up event during switch sequence to be ignored and - * cleared - */ -static void nmk_gpio_glitch_slpm_init(unsigned int *slpm) -{ - int i; - - for (i = 0; i < NUM_BANKS; i++) { - struct nmk_gpio_chip *chip = nmk_gpio_chips[i]; - unsigned int temp = slpm[i]; - - if (!chip) - break; - - clk_enable(chip->clk); - - slpm[i] = readl(chip->addr + NMK_GPIO_SLPC); - writel(temp, chip->addr + NMK_GPIO_SLPC); - } -} - -static void nmk_gpio_glitch_slpm_restore(unsigned int *slpm) -{ - int i; - - for (i = 0; i < NUM_BANKS; i++) { - struct nmk_gpio_chip *chip = nmk_gpio_chips[i]; - - if (!chip) - break; - - writel(slpm[i], chip->addr + NMK_GPIO_SLPC); - - clk_disable(chip->clk); - } -} - -static int __nmk_config_pins(pin_cfg_t *cfgs, int num, bool sleep) -{ - static unsigned int slpm[NUM_BANKS]; - unsigned long flags; - bool glitch = false; - int ret = 0; - int i; - - for (i = 0; i < num; i++) { - if (PIN_ALT(cfgs[i]) == NMK_GPIO_ALT_C) { - glitch = true; - break; - } - } - - spin_lock_irqsave(&nmk_gpio_slpm_lock, flags); - - if (glitch) { - memset(slpm, 0xff, sizeof(slpm)); - - for (i = 0; i < num; i++) { - int pin = PIN_NUM(cfgs[i]); - int offset = pin % NMK_GPIO_PER_CHIP; - - if (PIN_ALT(cfgs[i]) == NMK_GPIO_ALT_C) - slpm[pin / NMK_GPIO_PER_CHIP] &= ~BIT(offset); - } - - nmk_gpio_glitch_slpm_init(slpm); - } - - for (i = 0; i < num; i++) { - struct nmk_gpio_chip *nmk_chip; - int pin = PIN_NUM(cfgs[i]); - - nmk_chip = irq_get_chip_data(NOMADIK_GPIO_TO_IRQ(pin)); - if (!nmk_chip) { - ret = -EINVAL; - break; - } - - clk_enable(nmk_chip->clk); - spin_lock(&nmk_chip->lock); - __nmk_config_pin(nmk_chip, pin - nmk_chip->chip.base, - cfgs[i], sleep, glitch ? slpm : NULL); - spin_unlock(&nmk_chip->lock); - clk_disable(nmk_chip->clk); - } - - if (glitch) - nmk_gpio_glitch_slpm_restore(slpm); - - spin_unlock_irqrestore(&nmk_gpio_slpm_lock, flags); - - return ret; -} - -/** - * nmk_config_pin - configure a pin's mux attributes - * @cfg: pin confguration - * - * Configures a pin's mode (alternate function or GPIO), its pull up status, - * and its sleep mode based on the specified configuration. The @cfg is - * usually one of the SoC specific macros defined in mach/<soc>-pins.h. These - * are constructed using, and can be further enhanced with, the macros in - * plat/pincfg.h. - * - * If a pin's mode is set to GPIO, it is configured as an input to avoid - * side-effects. The gpio can be manipulated later using standard GPIO API - * calls. - */ -int nmk_config_pin(pin_cfg_t cfg, bool sleep) -{ - return __nmk_config_pins(&cfg, 1, sleep); -} -EXPORT_SYMBOL(nmk_config_pin); - -/** - * nmk_config_pins - configure several pins at once - * @cfgs: array of pin configurations - * @num: number of elments in the array - * - * Configures several pins using nmk_config_pin(). Refer to that function for - * further information. - */ -int nmk_config_pins(pin_cfg_t *cfgs, int num) -{ - return __nmk_config_pins(cfgs, num, false); -} -EXPORT_SYMBOL(nmk_config_pins); - -int nmk_config_pins_sleep(pin_cfg_t *cfgs, int num) -{ - return __nmk_config_pins(cfgs, num, true); -} -EXPORT_SYMBOL(nmk_config_pins_sleep); - -/** - * nmk_gpio_set_slpm() - configure the sleep mode of a pin - * @gpio: pin number - * @mode: NMK_GPIO_SLPM_INPUT or NMK_GPIO_SLPM_NOCHANGE, - * - * This register is actually in the pinmux layer, not the GPIO block itself. - * The GPIO1B_SLPM register defines the GPIO mode when SLEEP/DEEP-SLEEP - * mode is entered (i.e. when signal IOFORCE is HIGH by the platform code). - * Each GPIO can be configured to be forced into GPIO mode when IOFORCE is - * HIGH, overriding the normal setting defined by GPIO_AFSELx registers. - * When IOFORCE returns LOW (by software, after SLEEP/DEEP-SLEEP exit), - * the GPIOs return to the normal setting defined by GPIO_AFSELx registers. - * - * If @mode is NMK_GPIO_SLPM_INPUT, the corresponding GPIO is switched to GPIO - * mode when signal IOFORCE is HIGH (i.e. when SLEEP/DEEP-SLEEP mode is - * entered) regardless of the altfunction selected. Also wake-up detection is - * ENABLED. - * - * If @mode is NMK_GPIO_SLPM_NOCHANGE, the corresponding GPIO remains - * controlled by NMK_GPIO_DATC, NMK_GPIO_DATS, NMK_GPIO_DIR, NMK_GPIO_PDIS - * (for altfunction GPIO) or respective on-chip peripherals (for other - * altfuncs) when IOFORCE is HIGH. Also wake-up detection DISABLED. - * - * Note that enable_irq_wake() will automatically enable wakeup detection. - */ -int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode) -{ - struct nmk_gpio_chip *nmk_chip; - unsigned long flags; - - nmk_chip = irq_get_chip_data(NOMADIK_GPIO_TO_IRQ(gpio)); - if (!nmk_chip) - return -EINVAL; - - clk_enable(nmk_chip->clk); - spin_lock_irqsave(&nmk_gpio_slpm_lock, flags); - spin_lock(&nmk_chip->lock); - - __nmk_gpio_set_slpm(nmk_chip, gpio - nmk_chip->chip.base, mode); - - spin_unlock(&nmk_chip->lock); - spin_unlock_irqrestore(&nmk_gpio_slpm_lock, flags); - clk_disable(nmk_chip->clk); - - return 0; -} - -/** - * nmk_gpio_set_pull() - enable/disable pull up/down on a gpio - * @gpio: pin number - * @pull: one of NMK_GPIO_PULL_DOWN, NMK_GPIO_PULL_UP, and NMK_GPIO_PULL_NONE - * - * Enables/disables pull up/down on a specified pin. This only takes effect if - * the pin is configured as an input (either explicitly or by the alternate - * function). - * - * NOTE: If enabling the pull up/down, the caller must ensure that the GPIO is - * configured as an input. Otherwise, due to the way the controller registers - * work, this function will change the value output on the pin. - */ -int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull) -{ - struct nmk_gpio_chip *nmk_chip; - unsigned long flags; - - nmk_chip = irq_get_chip_data(NOMADIK_GPIO_TO_IRQ(gpio)); - if (!nmk_chip) - return -EINVAL; - - clk_enable(nmk_chip->clk); - spin_lock_irqsave(&nmk_chip->lock, flags); - __nmk_gpio_set_pull(nmk_chip, gpio - nmk_chip->chip.base, pull); - spin_unlock_irqrestore(&nmk_chip->lock, flags); - clk_disable(nmk_chip->clk); - - return 0; -} - -/* Mode functions */ -/** - * nmk_gpio_set_mode() - set the mux mode of a gpio pin - * @gpio: pin number - * @gpio_mode: one of NMK_GPIO_ALT_GPIO, NMK_GPIO_ALT_A, - * NMK_GPIO_ALT_B, and NMK_GPIO_ALT_C - * - * Sets the mode of the specified pin to one of the alternate functions or - * plain GPIO. - */ -int nmk_gpio_set_mode(int gpio, int gpio_mode) -{ - struct nmk_gpio_chip *nmk_chip; - unsigned long flags; - - nmk_chip = irq_get_chip_data(NOMADIK_GPIO_TO_IRQ(gpio)); - if (!nmk_chip) - return -EINVAL; - - clk_enable(nmk_chip->clk); - spin_lock_irqsave(&nmk_chip->lock, flags); - __nmk_gpio_set_mode(nmk_chip, gpio - nmk_chip->chip.base, gpio_mode); - spin_unlock_irqrestore(&nmk_chip->lock, flags); - clk_disable(nmk_chip->clk); - - return 0; -} -EXPORT_SYMBOL(nmk_gpio_set_mode); - -int nmk_gpio_get_mode(int gpio) -{ - struct nmk_gpio_chip *nmk_chip; - u32 afunc, bfunc, bit; - - nmk_chip = irq_get_chip_data(NOMADIK_GPIO_TO_IRQ(gpio)); - if (!nmk_chip) - return -EINVAL; - - bit = 1 << (gpio - nmk_chip->chip.base); - - clk_enable(nmk_chip->clk); - - afunc = readl(nmk_chip->addr + NMK_GPIO_AFSLA) & bit; - bfunc = readl(nmk_chip->addr + NMK_GPIO_AFSLB) & bit; - - clk_disable(nmk_chip->clk); - - return (afunc ? NMK_GPIO_ALT_A : 0) | (bfunc ? NMK_GPIO_ALT_B : 0); -} -EXPORT_SYMBOL(nmk_gpio_get_mode); - - -/* IRQ functions */ -static inline int nmk_gpio_get_bitmask(int gpio) -{ - return 1 << (gpio % 32); -} - -static void nmk_gpio_irq_ack(struct irq_data *d) -{ - int gpio; - struct nmk_gpio_chip *nmk_chip; - - gpio = NOMADIK_IRQ_TO_GPIO(d->irq); - nmk_chip = irq_data_get_irq_chip_data(d); - if (!nmk_chip) - return; - - clk_enable(nmk_chip->clk); - writel(nmk_gpio_get_bitmask(gpio), nmk_chip->addr + NMK_GPIO_IC); - clk_disable(nmk_chip->clk); -} - -enum nmk_gpio_irq_type { - NORMAL, - WAKE, -}; - -static void __nmk_gpio_irq_modify(struct nmk_gpio_chip *nmk_chip, - int gpio, enum nmk_gpio_irq_type which, - bool enable) -{ - u32 rimsc = which == WAKE ? NMK_GPIO_RWIMSC : NMK_GPIO_RIMSC; - u32 fimsc = which == WAKE ? NMK_GPIO_FWIMSC : NMK_GPIO_FIMSC; - u32 bitmask = nmk_gpio_get_bitmask(gpio); - u32 reg; - - /* we must individually set/clear the two edges */ - if (nmk_chip->edge_rising & bitmask) { - reg = readl(nmk_chip->addr + rimsc); - if (enable) - reg |= bitmask; - else - reg &= ~bitmask; - writel(reg, nmk_chip->addr + rimsc); - } - if (nmk_chip->edge_falling & bitmask) { - reg = readl(nmk_chip->addr + fimsc); - if (enable) - reg |= bitmask; - else - reg &= ~bitmask; - writel(reg, nmk_chip->addr + fimsc); - } -} - -static void __nmk_gpio_set_wake(struct nmk_gpio_chip *nmk_chip, - int gpio, bool on) -{ - if (nmk_chip->sleepmode) { - __nmk_gpio_set_slpm(nmk_chip, gpio - nmk_chip->chip.base, - on ? NMK_GPIO_SLPM_WAKEUP_ENABLE - : NMK_GPIO_SLPM_WAKEUP_DISABLE); - } - - __nmk_gpio_irq_modify(nmk_chip, gpio, WAKE, on); -} - -static int nmk_gpio_irq_maskunmask(struct irq_data *d, bool enable) -{ - int gpio; - struct nmk_gpio_chip *nmk_chip; - unsigned long flags; - u32 bitmask; - - gpio = NOMADIK_IRQ_TO_GPIO(d->irq); - nmk_chip = irq_data_get_irq_chip_data(d); - bitmask = nmk_gpio_get_bitmask(gpio); - if (!nmk_chip) - return -EINVAL; - - clk_enable(nmk_chip->clk); - spin_lock_irqsave(&nmk_gpio_slpm_lock, flags); - spin_lock(&nmk_chip->lock); - - __nmk_gpio_irq_modify(nmk_chip, gpio, NORMAL, enable); - - if (!(nmk_chip->real_wake & bitmask)) - __nmk_gpio_set_wake(nmk_chip, gpio, enable); - - spin_unlock(&nmk_chip->lock); - spin_unlock_irqrestore(&nmk_gpio_slpm_lock, flags); - clk_disable(nmk_chip->clk); - - return 0; -} - -static void nmk_gpio_irq_mask(struct irq_data *d) -{ - nmk_gpio_irq_maskunmask(d, false); -} - -static void nmk_gpio_irq_unmask(struct irq_data *d) -{ - nmk_gpio_irq_maskunmask(d, true); -} - -static int nmk_gpio_irq_set_wake(struct irq_data *d, unsigned int on) -{ - struct nmk_gpio_chip *nmk_chip; - unsigned long flags; - u32 bitmask; - int gpio; - - gpio = NOMADIK_IRQ_TO_GPIO(d->irq); - nmk_chip = irq_data_get_irq_chip_data(d); - if (!nmk_chip) - return -EINVAL; - bitmask = nmk_gpio_get_bitmask(gpio); - - clk_enable(nmk_chip->clk); - spin_lock_irqsave(&nmk_gpio_slpm_lock, flags); - spin_lock(&nmk_chip->lock); - - if (irqd_irq_disabled(d)) - __nmk_gpio_set_wake(nmk_chip, gpio, on); - - if (on) - nmk_chip->real_wake |= bitmask; - else - nmk_chip->real_wake &= ~bitmask; - - spin_unlock(&nmk_chip->lock); - spin_unlock_irqrestore(&nmk_gpio_slpm_lock, flags); - clk_disable(nmk_chip->clk); - - return 0; -} - -static int nmk_gpio_irq_set_type(struct irq_data *d, unsigned int type) -{ - bool enabled = !irqd_irq_disabled(d); - bool wake = irqd_is_wakeup_set(d); - int gpio; - struct nmk_gpio_chip *nmk_chip; - unsigned long flags; - u32 bitmask; - - gpio = NOMADIK_IRQ_TO_GPIO(d->irq); - nmk_chip = irq_data_get_irq_chip_data(d); - bitmask = nmk_gpio_get_bitmask(gpio); - if (!nmk_chip) - return -EINVAL; - - if (type & IRQ_TYPE_LEVEL_HIGH) - return -EINVAL; - if (type & IRQ_TYPE_LEVEL_LOW) - return -EINVAL; - - clk_enable(nmk_chip->clk); - spin_lock_irqsave(&nmk_chip->lock, flags); - - if (enabled) - __nmk_gpio_irq_modify(nmk_chip, gpio, NORMAL, false); - - if (enabled || wake) - __nmk_gpio_irq_modify(nmk_chip, gpio, WAKE, false); - - nmk_chip->edge_rising &= ~bitmask; - if (type & IRQ_TYPE_EDGE_RISING) - nmk_chip->edge_rising |= bitmask; - - nmk_chip->edge_falling &= ~bitmask; - if (type & IRQ_TYPE_EDGE_FALLING) - nmk_chip->edge_falling |= bitmask; - - if (enabled) - __nmk_gpio_irq_modify(nmk_chip, gpio, NORMAL, true); - - if (enabled || wake) - __nmk_gpio_irq_modify(nmk_chip, gpio, WAKE, true); - - spin_unlock_irqrestore(&nmk_chip->lock, flags); - clk_disable(nmk_chip->clk); - - return 0; -} - -static unsigned int nmk_gpio_irq_startup(struct irq_data *d) -{ - struct nmk_gpio_chip *nmk_chip = irq_data_get_irq_chip_data(d); - - clk_enable(nmk_chip->clk); - nmk_gpio_irq_unmask(d); - return 0; -} - -static void nmk_gpio_irq_shutdown(struct irq_data *d) -{ - struct nmk_gpio_chip *nmk_chip = irq_data_get_irq_chip_data(d); - - nmk_gpio_irq_mask(d); - clk_disable(nmk_chip->clk); -} - -static struct irq_chip nmk_gpio_irq_chip = { - .name = "Nomadik-GPIO", - .irq_ack = nmk_gpio_irq_ack, - .irq_mask = nmk_gpio_irq_mask, - .irq_unmask = nmk_gpio_irq_unmask, - .irq_set_type = nmk_gpio_irq_set_type, - .irq_set_wake = nmk_gpio_irq_set_wake, - .irq_startup = nmk_gpio_irq_startup, - .irq_shutdown = nmk_gpio_irq_shutdown, -}; - -static void __nmk_gpio_irq_handler(unsigned int irq, struct irq_desc *desc, - u32 status) -{ - struct nmk_gpio_chip *nmk_chip; - struct irq_chip *host_chip = irq_get_chip(irq); - unsigned int first_irq; - - chained_irq_enter(host_chip, desc); - - nmk_chip = irq_get_handler_data(irq); - first_irq = NOMADIK_GPIO_TO_IRQ(nmk_chip->chip.base); - while (status) { - int bit = __ffs(status); - - generic_handle_irq(first_irq + bit); - status &= ~BIT(bit); - } - - chained_irq_exit(host_chip, desc); -} - -static void nmk_gpio_irq_handler(unsigned int irq, struct irq_desc *desc) -{ - struct nmk_gpio_chip *nmk_chip = irq_get_handler_data(irq); - u32 status; - - clk_enable(nmk_chip->clk); - status = readl(nmk_chip->addr + NMK_GPIO_IS); - clk_disable(nmk_chip->clk); - - __nmk_gpio_irq_handler(irq, desc, status); -} - -static void nmk_gpio_secondary_irq_handler(unsigned int irq, - struct irq_desc *desc) -{ - struct nmk_gpio_chip *nmk_chip = irq_get_handler_data(irq); - u32 status = nmk_chip->get_secondary_status(nmk_chip->bank); - - __nmk_gpio_irq_handler(irq, desc, status); -} - -static int nmk_gpio_init_irq(struct nmk_gpio_chip *nmk_chip) -{ - unsigned int first_irq; - int i; - - first_irq = NOMADIK_GPIO_TO_IRQ(nmk_chip->chip.base); - for (i = first_irq; i < first_irq + nmk_chip->chip.ngpio; i++) { - irq_set_chip_and_handler(i, &nmk_gpio_irq_chip, - handle_edge_irq); - set_irq_flags(i, IRQF_VALID); - irq_set_chip_data(i, nmk_chip); - irq_set_irq_type(i, IRQ_TYPE_EDGE_FALLING); - } - - irq_set_chained_handler(nmk_chip->parent_irq, nmk_gpio_irq_handler); - irq_set_handler_data(nmk_chip->parent_irq, nmk_chip); - - if (nmk_chip->secondary_parent_irq >= 0) { - irq_set_chained_handler(nmk_chip->secondary_parent_irq, - nmk_gpio_secondary_irq_handler); - irq_set_handler_data(nmk_chip->secondary_parent_irq, nmk_chip); - } - - return 0; -} - -/* I/O Functions */ -static int nmk_gpio_make_input(struct gpio_chip *chip, unsigned offset) -{ - struct nmk_gpio_chip *nmk_chip = - container_of(chip, struct nmk_gpio_chip, chip); - - clk_enable(nmk_chip->clk); - - writel(1 << offset, nmk_chip->addr + NMK_GPIO_DIRC); - - clk_disable(nmk_chip->clk); - - return 0; -} - -static int nmk_gpio_get_input(struct gpio_chip *chip, unsigned offset) -{ - struct nmk_gpio_chip *nmk_chip = - container_of(chip, struct nmk_gpio_chip, chip); - u32 bit = 1 << offset; - int value; - - clk_enable(nmk_chip->clk); - - value = (readl(nmk_chip->addr + NMK_GPIO_DAT) & bit) != 0; - - clk_disable(nmk_chip->clk); - - return value; -} - -static void nmk_gpio_set_output(struct gpio_chip *chip, unsigned offset, - int val) -{ - struct nmk_gpio_chip *nmk_chip = - container_of(chip, struct nmk_gpio_chip, chip); - - clk_enable(nmk_chip->clk); - - __nmk_gpio_set_output(nmk_chip, offset, val); - - clk_disable(nmk_chip->clk); -} - -static int nmk_gpio_make_output(struct gpio_chip *chip, unsigned offset, - int val) -{ - struct nmk_gpio_chip *nmk_chip = - container_of(chip, struct nmk_gpio_chip, chip); - - clk_enable(nmk_chip->clk); - - __nmk_gpio_make_output(nmk_chip, offset, val); - - clk_disable(nmk_chip->clk); - - return 0; -} - -static int nmk_gpio_to_irq(struct gpio_chip *chip, unsigned offset) -{ - struct nmk_gpio_chip *nmk_chip = - container_of(chip, struct nmk_gpio_chip, chip); - - return NOMADIK_GPIO_TO_IRQ(nmk_chip->chip.base) + offset; -} - -#ifdef CONFIG_DEBUG_FS - -#include <linux/seq_file.h> - -static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) -{ - int mode; - unsigned i; - unsigned gpio = chip->base; - int is_out; - struct nmk_gpio_chip *nmk_chip = - container_of(chip, struct nmk_gpio_chip, chip); - const char *modes[] = { - [NMK_GPIO_ALT_GPIO] = "gpio", - [NMK_GPIO_ALT_A] = "altA", - [NMK_GPIO_ALT_B] = "altB", - [NMK_GPIO_ALT_C] = "altC", - }; - - clk_enable(nmk_chip->clk); - - for (i = 0; i < chip->ngpio; i++, gpio++) { - const char *label = gpiochip_is_requested(chip, i); - bool pull; - u32 bit = 1 << i; - - is_out = readl(nmk_chip->addr + NMK_GPIO_DIR) & bit; - pull = !(readl(nmk_chip->addr + NMK_GPIO_PDIS) & bit); - mode = nmk_gpio_get_mode(gpio); - seq_printf(s, " gpio-%-3d (%-20.20s) %s %s %s %s", - gpio, label ?: "(none)", - is_out ? "out" : "in ", - chip->get - ? (chip->get(chip, i) ? "hi" : "lo") - : "? ", - (mode < 0) ? "unknown" : modes[mode], - pull ? "pull" : "none"); - - if (label && !is_out) { - int irq = gpio_to_irq(gpio); - struct irq_desc *desc = irq_to_desc(irq); - - /* This races with request_irq(), set_irq_type(), - * and set_irq_wake() ... but those are "rare". - */ - if (irq >= 0 && desc->action) { - char *trigger; - u32 bitmask = nmk_gpio_get_bitmask(gpio); - - if (nmk_chip->edge_rising & bitmask) - trigger = "edge-rising"; - else if (nmk_chip->edge_falling & bitmask) - trigger = "edge-falling"; - else - trigger = "edge-undefined"; - - seq_printf(s, " irq-%d %s%s", - irq, trigger, - irqd_is_wakeup_set(&desc->irq_data) - ? " wakeup" : ""); - } - } - - seq_printf(s, "\n"); - } - - clk_disable(nmk_chip->clk); -} - -#else -#define nmk_gpio_dbg_show NULL -#endif - -/* This structure is replicated for each GPIO block allocated at probe time */ -static struct gpio_chip nmk_gpio_template = { - .direction_input = nmk_gpio_make_input, - .get = nmk_gpio_get_input, - .direction_output = nmk_gpio_make_output, - .set = nmk_gpio_set_output, - .to_irq = nmk_gpio_to_irq, - .dbg_show = nmk_gpio_dbg_show, - .can_sleep = 0, -}; - -void nmk_gpio_clocks_enable(void) -{ - int i; - - for (i = 0; i < NUM_BANKS; i++) { - struct nmk_gpio_chip *chip = nmk_gpio_chips[i]; - - if (!chip) - continue; - - clk_enable(chip->clk); - } -} - -void nmk_gpio_clocks_disable(void) -{ - int i; - - for (i = 0; i < NUM_BANKS; i++) { - struct nmk_gpio_chip *chip = nmk_gpio_chips[i]; - - if (!chip) - continue; - - clk_disable(chip->clk); - } -} - -/* - * Called from the suspend/resume path to only keep the real wakeup interrupts - * (those that have had set_irq_wake() called on them) as wakeup interrupts, - * and not the rest of the interrupts which we needed to have as wakeups for - * cpuidle. - * - * PM ops are not used since this needs to be done at the end, after all the - * other drivers are done with their suspend callbacks. - */ -void nmk_gpio_wakeups_suspend(void) -{ - int i; - - for (i = 0; i < NUM_BANKS; i++) { - struct nmk_gpio_chip *chip = nmk_gpio_chips[i]; - - if (!chip) - break; - - clk_enable(chip->clk); - - chip->rwimsc = readl(chip->addr + NMK_GPIO_RWIMSC); - chip->fwimsc = readl(chip->addr + NMK_GPIO_FWIMSC); - - writel(chip->rwimsc & chip->real_wake, - chip->addr + NMK_GPIO_RWIMSC); - writel(chip->fwimsc & chip->real_wake, - chip->addr + NMK_GPIO_FWIMSC); - - if (chip->sleepmode) { - chip->slpm = readl(chip->addr + NMK_GPIO_SLPC); - - /* 0 -> wakeup enable */ - writel(~chip->real_wake, chip->addr + NMK_GPIO_SLPC); - } - - clk_disable(chip->clk); - } -} - -void nmk_gpio_wakeups_resume(void) -{ - int i; - - for (i = 0; i < NUM_BANKS; i++) { - struct nmk_gpio_chip *chip = nmk_gpio_chips[i]; - - if (!chip) - break; - - clk_enable(chip->clk); - - writel(chip->rwimsc, chip->addr + NMK_GPIO_RWIMSC); - writel(chip->fwimsc, chip->addr + NMK_GPIO_FWIMSC); - - if (chip->sleepmode) - writel(chip->slpm, chip->addr + NMK_GPIO_SLPC); - - clk_disable(chip->clk); - } -} - -/* - * Read the pull up/pull down status. - * A bit set in 'pull_up' means that pull up - * is selected if pull is enabled in PDIS register. - * Note: only pull up/down set via this driver can - * be detected due to HW limitations. - */ -void nmk_gpio_read_pull(int gpio_bank, u32 *pull_up) -{ - if (gpio_bank < NUM_BANKS) { - struct nmk_gpio_chip *chip = nmk_gpio_chips[gpio_bank]; - - if (!chip) - return; - - *pull_up = chip->pull_up; - } -} - -static int __devinit nmk_gpio_probe(struct platform_device *dev) -{ - struct nmk_gpio_platform_data *pdata = dev->dev.platform_data; - struct nmk_gpio_chip *nmk_chip; - struct gpio_chip *chip; - struct resource *res; - struct clk *clk; - int secondary_irq; - int irq; - int ret; - - if (!pdata) - return -ENODEV; - - res = platform_get_resource(dev, IORESOURCE_MEM, 0); - if (!res) { - ret = -ENOENT; - goto out; - } - - irq = platform_get_irq(dev, 0); - if (irq < 0) { - ret = irq; - goto out; - } - - secondary_irq = platform_get_irq(dev, 1); - if (secondary_irq >= 0 && !pdata->get_secondary_status) { - ret = -EINVAL; - goto out; - } - - if (request_mem_region(res->start, resource_size(res), - dev_name(&dev->dev)) == NULL) { - ret = -EBUSY; - goto out; - } - - clk = clk_get(&dev->dev, NULL); - if (IS_ERR(clk)) { - ret = PTR_ERR(clk); - goto out_release; - } - - nmk_chip = kzalloc(sizeof(*nmk_chip), GFP_KERNEL); - if (!nmk_chip) { - ret = -ENOMEM; - goto out_clk; - } - /* - * The virt address in nmk_chip->addr is in the nomadik register space, - * so we can simply convert the resource address, without remapping - */ - nmk_chip->bank = dev->id; - nmk_chip->clk = clk; - nmk_chip->addr = io_p2v(res->start); - nmk_chip->chip = nmk_gpio_template; - nmk_chip->parent_irq = irq; - nmk_chip->secondary_parent_irq = secondary_irq; - nmk_chip->get_secondary_status = pdata->get_secondary_status; - nmk_chip->set_ioforce = pdata->set_ioforce; - nmk_chip->sleepmode = pdata->supports_sleepmode; - spin_lock_init(&nmk_chip->lock); - - chip = &nmk_chip->chip; - chip->base = pdata->first_gpio; - chip->ngpio = pdata->num_gpio; - chip->label = pdata->name ?: dev_name(&dev->dev); - chip->dev = &dev->dev; - chip->owner = THIS_MODULE; - - ret = gpiochip_add(&nmk_chip->chip); - if (ret) - goto out_free; - - BUG_ON(nmk_chip->bank >= ARRAY_SIZE(nmk_gpio_chips)); - - nmk_gpio_chips[nmk_chip->bank] = nmk_chip; - platform_set_drvdata(dev, nmk_chip); - - nmk_gpio_init_irq(nmk_chip); - - dev_info(&dev->dev, "at address %p\n", - nmk_chip->addr); - return 0; - -out_free: - kfree(nmk_chip); -out_clk: - clk_disable(clk); - clk_put(clk); -out_release: - release_mem_region(res->start, resource_size(res)); -out: - dev_err(&dev->dev, "Failure %i for GPIO %i-%i\n", ret, - pdata->first_gpio, pdata->first_gpio+31); - return ret; -} - -static struct platform_driver nmk_gpio_driver = { - .driver = { - .owner = THIS_MODULE, - .name = "gpio", - }, - .probe = nmk_gpio_probe, -}; - -static int __init nmk_gpio_init(void) -{ - return platform_driver_register(&nmk_gpio_driver); -} - -core_initcall(nmk_gpio_init); - -MODULE_AUTHOR("Prafulla WADASKAR and Alessandro Rubini"); -MODULE_DESCRIPTION("Nomadik GPIO Driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 1adc2ec1e38..4461540653a 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -965,18 +965,15 @@ static void omap_gpio_mod_init(struct gpio_bank *bank) } _gpio_rmw(base, bank->regs->irqenable, l, bank->regs->irqenable_inv); - _gpio_rmw(base, bank->regs->irqstatus, l, - bank->regs->irqenable_inv == false); - _gpio_rmw(base, bank->regs->irqenable, l, bank->regs->debounce_en != 0); - _gpio_rmw(base, bank->regs->irqenable, l, bank->regs->ctrl != 0); + _gpio_rmw(base, bank->regs->irqstatus, l, !bank->regs->irqenable_inv); if (bank->regs->debounce_en) - _gpio_rmw(base, bank->regs->debounce_en, 0, 1); + __raw_writel(0, base + bank->regs->debounce_en); /* Save OE default value (0xffffffff) in the context */ bank->context.oe = __raw_readl(bank->base + bank->regs->direction); /* Initialize interface clk ungated, module enabled */ if (bank->regs->ctrl) - _gpio_rmw(base, bank->regs->ctrl, 0, 1); + __raw_writel(0, base + bank->regs->ctrl); } static __devinit void diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c index e8729cc2ba2..2cd958e0b82 100644 --- a/drivers/gpio/gpio-pch.c +++ b/drivers/gpio/gpio-pch.c @@ -230,16 +230,12 @@ static void pch_gpio_setup(struct pch_gpio *chip) static int pch_irq_type(struct irq_data *d, unsigned int type) { - u32 im; - u32 __iomem *im_reg; - u32 ien; - u32 im_pos; - int ch; - unsigned long flags; - u32 val; - int irq = d->irq; struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct pch_gpio *chip = gc->private; + u32 im, im_pos, val; + u32 __iomem *im_reg; + unsigned long flags; + int ch, irq = d->irq; ch = irq - chip->irq_base; if (irq <= chip->irq_base + 7) { @@ -270,30 +266,22 @@ static int pch_irq_type(struct irq_data *d, unsigned int type) case IRQ_TYPE_LEVEL_LOW: val = PCH_LEVEL_L; break; - case IRQ_TYPE_PROBE: - goto end; default: - dev_warn(chip->dev, "%s: unknown type(%dd)", - __func__, type); - goto end; + goto unlock; } /* Set interrupt mode */ im = ioread32(im_reg) & ~(PCH_IM_MASK << (im_pos * 4)); iowrite32(im | (val << (im_pos * 4)), im_reg); - /* iclr */ - iowrite32(BIT(ch), &chip->reg->iclr); + /* And the handler */ + if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) + __irq_set_handler_locked(d->irq, handle_level_irq); + else if (type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)) + __irq_set_handler_locked(d->irq, handle_edge_irq); - /* IMASKCLR */ - iowrite32(BIT(ch), &chip->reg->imaskclr); - - /* Enable interrupt */ - ien = ioread32(&chip->reg->ien); - iowrite32(ien | BIT(ch), &chip->reg->ien); -end: +unlock: spin_unlock_irqrestore(&chip->spinlock, flags); - return 0; } @@ -313,18 +301,24 @@ static void pch_irq_mask(struct irq_data *d) iowrite32(1 << (d->irq - chip->irq_base), &chip->reg->imask); } +static void pch_irq_ack(struct irq_data *d) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct pch_gpio *chip = gc->private; + + iowrite32(1 << (d->irq - chip->irq_base), &chip->reg->iclr); +} + static irqreturn_t pch_gpio_handler(int irq, void *dev_id) { struct pch_gpio *chip = dev_id; u32 reg_val = ioread32(&chip->reg->istatus); - int i; - int ret = IRQ_NONE; + int i, ret = IRQ_NONE; for (i = 0; i < gpio_pins[chip->ioh]; i++) { if (reg_val & BIT(i)) { dev_dbg(chip->dev, "%s:[%d]:irq=%d status=0x%x\n", __func__, i, irq, reg_val); - iowrite32(BIT(i), &chip->reg->iclr); generic_handle_irq(chip->irq_base + i); ret = IRQ_HANDLED; } @@ -343,6 +337,7 @@ static __devinit void pch_gpio_alloc_generic_chip(struct pch_gpio *chip, gc->private = chip; ct = gc->chip_types; + ct->chip.irq_ack = pch_irq_ack; ct->chip.irq_mask = pch_irq_mask; ct->chip.irq_unmask = pch_irq_unmask; ct->chip.irq_set_type = pch_irq_type; @@ -357,6 +352,7 @@ static int __devinit pch_gpio_probe(struct pci_dev *pdev, s32 ret; struct pch_gpio *chip; int irq_base; + u32 msk; chip = kzalloc(sizeof(*chip), GFP_KERNEL); if (chip == NULL) @@ -408,8 +404,13 @@ static int __devinit pch_gpio_probe(struct pci_dev *pdev, } chip->irq_base = irq_base; + /* Mask all interrupts, but enable them */ + msk = (1 << gpio_pins[chip->ioh]) - 1; + iowrite32(msk, &chip->reg->imask); + iowrite32(msk, &chip->reg->ien); + ret = request_irq(pdev->irq, pch_gpio_handler, - IRQF_SHARED, KBUILD_MODNAME, chip); + IRQF_SHARED, KBUILD_MODNAME, chip); if (ret != 0) { dev_err(&pdev->dev, "%s request_irq failed\n", __func__); @@ -418,8 +419,6 @@ static int __devinit pch_gpio_probe(struct pci_dev *pdev, pch_gpio_alloc_generic_chip(chip, irq_base, gpio_pins[chip->ioh]); - /* Initialize interrupt ien register */ - iowrite32(0, &chip->reg->ien); end: return 0; diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c index 5689ce62fd8..58a6a63a6ec 100644 --- a/drivers/gpio/gpio-pxa.c +++ b/drivers/gpio/gpio-pxa.c @@ -11,13 +11,17 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include <linux/module.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/gpio.h> #include <linux/gpio-pxa.h> #include <linux/init.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <linux/io.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/syscore_ops.h> #include <linux/slab.h> @@ -56,6 +60,10 @@ int pxa_last_gpio; +#ifdef CONFIG_OF +static struct irq_domain *domain; +#endif + struct pxa_gpio_chip { struct gpio_chip chip; void __iomem *regbase; @@ -64,6 +72,7 @@ struct pxa_gpio_chip { unsigned long irq_mask; unsigned long irq_edge_rise; unsigned long irq_edge_fall; + int (*set_wake)(unsigned int gpio, unsigned int on); #ifdef CONFIG_PM unsigned long saved_gplr; @@ -80,7 +89,6 @@ enum { PXA3XX_GPIO, PXA93X_GPIO, MMP_GPIO = 0x10, - MMP2_GPIO, }; static DEFINE_SPINLOCK(gpio_lock); @@ -269,7 +277,8 @@ static void pxa_gpio_set(struct gpio_chip *chip, unsigned offset, int value) (value ? GPSR_OFFSET : GPCR_OFFSET)); } -static int __devinit pxa_init_gpio_chip(int gpio_end) +static int __devinit pxa_init_gpio_chip(int gpio_end, + int (*set_wake)(unsigned int, unsigned int)) { int i, gpio, nbanks = gpio_to_bank(gpio_end) + 1; struct pxa_gpio_chip *chips; @@ -285,6 +294,7 @@ static int __devinit pxa_init_gpio_chip(int gpio_end) sprintf(chips[i].label, "gpio-%d", i); chips[i].regbase = gpio_reg_base + BANK_OFF(i); + chips[i].set_wake = set_wake; c->base = gpio; c->label = chips[i].label; @@ -412,6 +422,17 @@ static void pxa_mask_muxed_gpio(struct irq_data *d) writel_relaxed(gfer, c->regbase + GFER_OFFSET); } +static int pxa_gpio_set_wake(struct irq_data *d, unsigned int on) +{ + int gpio = pxa_irq_to_gpio(d->irq); + struct pxa_gpio_chip *c = gpio_to_pxachip(gpio); + + if (c->set_wake) + return c->set_wake(gpio, on); + else + return 0; +} + static void pxa_unmask_muxed_gpio(struct irq_data *d) { int gpio = pxa_irq_to_gpio(d->irq); @@ -427,6 +448,7 @@ static struct irq_chip pxa_muxed_gpio_chip = { .irq_mask = pxa_mask_muxed_gpio, .irq_unmask = pxa_unmask_muxed_gpio, .irq_set_type = pxa_gpio_irq_type, + .irq_set_wake = pxa_gpio_set_wake, }; static int pxa_gpio_nums(void) @@ -460,21 +482,92 @@ static int pxa_gpio_nums(void) gpio_type = MMP_GPIO; } else if (cpu_is_mmp2()) { count = 191; - gpio_type = MMP2_GPIO; + gpio_type = MMP_GPIO; } #endif /* CONFIG_ARCH_MMP */ return count; } +static struct of_device_id pxa_gpio_dt_ids[] = { + { .compatible = "mrvl,pxa-gpio" }, + { .compatible = "mrvl,mmp-gpio", .data = (void *)MMP_GPIO }, + {} +}; + +static int pxa_irq_domain_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hw) +{ + irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip, + handle_edge_irq); + set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + return 0; +} + +const struct irq_domain_ops pxa_irq_domain_ops = { + .map = pxa_irq_domain_map, +}; + +#ifdef CONFIG_OF +static int __devinit pxa_gpio_probe_dt(struct platform_device *pdev) +{ + int ret, nr_banks, nr_gpios, irq_base; + struct device_node *prev, *next, *np = pdev->dev.of_node; + const struct of_device_id *of_id = + of_match_device(pxa_gpio_dt_ids, &pdev->dev); + + if (!of_id) { + dev_err(&pdev->dev, "Failed to find gpio controller\n"); + return -EFAULT; + } + gpio_type = (int)of_id->data; + + next = of_get_next_child(np, NULL); + prev = next; + if (!next) { + dev_err(&pdev->dev, "Failed to find child gpio node\n"); + ret = -EINVAL; + goto err; + } + for (nr_banks = 1; ; nr_banks++) { + next = of_get_next_child(np, prev); + if (!next) + break; + prev = next; + } + of_node_put(prev); + nr_gpios = nr_banks << 5; + pxa_last_gpio = nr_gpios - 1; + + irq_base = irq_alloc_descs(-1, 0, nr_gpios, 0); + if (irq_base < 0) { + dev_err(&pdev->dev, "Failed to allocate IRQ numbers\n"); + goto err; + } + domain = irq_domain_add_legacy(np, nr_gpios, irq_base, 0, + &pxa_irq_domain_ops, NULL); + return 0; +err: + iounmap(gpio_reg_base); + return ret; +} +#else +#define pxa_gpio_probe_dt(pdev) (-1) +#endif + static int __devinit pxa_gpio_probe(struct platform_device *pdev) { struct pxa_gpio_chip *c; struct resource *res; struct clk *clk; - int gpio, irq, ret; + struct pxa_gpio_platform_data *info; + int gpio, irq, ret, use_of = 0; int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0; - pxa_last_gpio = pxa_gpio_nums(); + ret = pxa_gpio_probe_dt(pdev); + if (ret < 0) + pxa_last_gpio = pxa_gpio_nums(); + else + use_of = 1; if (!pxa_last_gpio) return -EINVAL; @@ -516,7 +609,8 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev) } /* Initialize GPIO chips */ - pxa_init_gpio_chip(pxa_last_gpio); + info = dev_get_platdata(&pdev->dev); + pxa_init_gpio_chip(pxa_last_gpio, info ? info->gpio_set_wake : NULL); /* clear all GPIO edge detects */ for_each_gpio_chip(gpio, c) { @@ -528,25 +622,27 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev) writel_relaxed(~0, c->regbase + ED_MASK_OFFSET); } + if (!use_of) { #ifdef CONFIG_ARCH_PXA - irq = gpio_to_irq(0); - irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip, - handle_edge_irq); - set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); - irq_set_chained_handler(IRQ_GPIO0, pxa_gpio_demux_handler); - - irq = gpio_to_irq(1); - irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip, - handle_edge_irq); - set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); - irq_set_chained_handler(IRQ_GPIO1, pxa_gpio_demux_handler); -#endif + irq = gpio_to_irq(0); + irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip, + handle_edge_irq); + set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + irq_set_chained_handler(IRQ_GPIO0, pxa_gpio_demux_handler); - for (irq = gpio_to_irq(gpio_offset); - irq <= gpio_to_irq(pxa_last_gpio); irq++) { + irq = gpio_to_irq(1); irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip, handle_edge_irq); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + irq_set_chained_handler(IRQ_GPIO1, pxa_gpio_demux_handler); +#endif + + for (irq = gpio_to_irq(gpio_offset); + irq <= gpio_to_irq(pxa_last_gpio); irq++) { + irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip, + handle_edge_irq); + set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + } } irq_set_chained_handler(irq_mux, pxa_gpio_demux_handler); @@ -557,6 +653,7 @@ static struct platform_driver pxa_gpio_driver = { .probe = pxa_gpio_probe, .driver = { .name = "pxa-gpio", + .of_match_table = pxa_gpio_dt_ids, }, }; diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c index 19d6fc0229c..e991d917196 100644 --- a/drivers/gpio/gpio-samsung.c +++ b/drivers/gpio/gpio-samsung.c @@ -452,12 +452,14 @@ static struct samsung_gpio_cfg s3c24xx_gpiocfg_banka = { }; #endif +#if defined(CONFIG_ARCH_EXYNOS4) || defined(CONFIG_ARCH_EXYNOS5) static struct samsung_gpio_cfg exynos_gpio_cfg = { .set_pull = exynos_gpio_setpull, .get_pull = exynos_gpio_getpull, .set_config = samsung_gpio_setcfg_4bit, .get_config = samsung_gpio_getcfg_4bit, }; +#endif #if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450) static struct samsung_gpio_cfg s5p64x0_gpio_cfg_rbank = { @@ -2123,8 +2125,8 @@ static struct samsung_gpio_chip s5pv210_gpios_4bit[] = { * uses the above macro and depends on the banks being listed in order here. */ -static struct samsung_gpio_chip exynos4_gpios_1[] = { #ifdef CONFIG_ARCH_EXYNOS4 +static struct samsung_gpio_chip exynos4_gpios_1[] = { { .chip = { .base = EXYNOS4_GPA0(0), @@ -2222,11 +2224,11 @@ static struct samsung_gpio_chip exynos4_gpios_1[] = { .label = "GPF3", }, }, -#endif }; +#endif -static struct samsung_gpio_chip exynos4_gpios_2[] = { #ifdef CONFIG_ARCH_EXYNOS4 +static struct samsung_gpio_chip exynos4_gpios_2[] = { { .chip = { .base = EXYNOS4_GPJ0(0), @@ -2367,11 +2369,11 @@ static struct samsung_gpio_chip exynos4_gpios_2[] = { .to_irq = samsung_gpiolib_to_irq, }, }, -#endif }; +#endif -static struct samsung_gpio_chip exynos4_gpios_3[] = { #ifdef CONFIG_ARCH_EXYNOS4 +static struct samsung_gpio_chip exynos4_gpios_3[] = { { .chip = { .base = EXYNOS4_GPZ(0), @@ -2379,8 +2381,8 @@ static struct samsung_gpio_chip exynos4_gpios_3[] = { .label = "GPZ", }, }, -#endif }; +#endif #ifdef CONFIG_ARCH_EXYNOS5 static struct samsung_gpio_chip exynos5_gpios_1[] = { @@ -2719,7 +2721,9 @@ static __init int samsung_gpiolib_init(void) { struct samsung_gpio_chip *chip; int i, nr_chips; +#if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS5250) void __iomem *gpio_base1, *gpio_base2, *gpio_base3, *gpio_base4; +#endif int group = 0; samsung_gpiolib_set_cfg(samsung_gpio_cfgs, ARRAY_SIZE(samsung_gpio_cfgs)); @@ -2971,6 +2975,7 @@ static __init int samsung_gpiolib_init(void) return 0; +#if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS5250) err_ioremap4: iounmap(gpio_base3); err_ioremap3: @@ -2979,6 +2984,7 @@ err_ioremap2: iounmap(gpio_base1); err_ioremap1: return -ENOMEM; +#endif } core_initcall(samsung_gpiolib_init); diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 12f349b3830..dc5184d5789 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -26,10 +26,10 @@ #include <linux/platform_device.h> #include <linux/module.h> #include <linux/irqdomain.h> +#include <linux/pinctrl/consumer.h> #include <asm/mach/irq.h> -#include <mach/gpio-tegra.h> #include <mach/iomap.h> #include <mach/suspend.h> @@ -108,18 +108,29 @@ static void tegra_gpio_mask_write(u32 reg, int gpio, int value) tegra_gpio_writel(val, reg); } -void tegra_gpio_enable(int gpio) +static void tegra_gpio_enable(int gpio) { tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 1); } EXPORT_SYMBOL_GPL(tegra_gpio_enable); -void tegra_gpio_disable(int gpio) +static void tegra_gpio_disable(int gpio) { tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 0); } EXPORT_SYMBOL_GPL(tegra_gpio_disable); +int tegra_gpio_request(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_request_gpio(offset); +} + +void tegra_gpio_free(struct gpio_chip *chip, unsigned offset) +{ + pinctrl_free_gpio(offset); + tegra_gpio_disable(offset); +} + static void tegra_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { tegra_gpio_mask_write(GPIO_MSK_OUT(offset), offset, value); @@ -133,6 +144,7 @@ static int tegra_gpio_get(struct gpio_chip *chip, unsigned offset) static int tegra_gpio_direction_input(struct gpio_chip *chip, unsigned offset) { tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 0); + tegra_gpio_enable(offset); return 0; } @@ -141,6 +153,7 @@ static int tegra_gpio_direction_output(struct gpio_chip *chip, unsigned offset, { tegra_gpio_set(chip, offset, value); tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 1); + tegra_gpio_enable(offset); return 0; } @@ -151,13 +164,14 @@ static int tegra_gpio_to_irq(struct gpio_chip *chip, unsigned offset) static struct gpio_chip tegra_gpio_chip = { .label = "tegra-gpio", + .request = tegra_gpio_request, + .free = tegra_gpio_free, .direction_input = tegra_gpio_direction_input, .get = tegra_gpio_get, .direction_output = tegra_gpio_direction_output, .set = tegra_gpio_set, .to_irq = tegra_gpio_to_irq, .base = 0, - .ngpio = TEGRA_NR_GPIOS, }; static void tegra_gpio_irq_ack(struct irq_data *d) @@ -224,6 +238,9 @@ static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type) spin_unlock_irqrestore(&bank->lvl_lock[port], flags); + tegra_gpio_mask_write(GPIO_MSK_OE(gpio), gpio, 0); + tegra_gpio_enable(gpio); + if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) __irq_set_handler_locked(d->irq, handle_level_irq); else if (type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)) @@ -490,20 +507,6 @@ static int __init tegra_gpio_init(void) } postcore_initcall(tegra_gpio_init); -void tegra_gpio_config(struct tegra_gpio_table *table, int num) -{ - int i; - - for (i = 0; i < num; i++) { - int gpio = table[i].gpio; - - if (table[i].enable) - tegra_gpio_enable(gpio); - else - tegra_gpio_disable(gpio); - } -} - #ifdef CONFIG_DEBUG_FS #include <linux/debugfs.h> |