diff options
author | Olof Johansson <olof@lixom.net> | 2013-07-12 10:59:39 -0700 |
---|---|---|
committer | Olof Johansson <olof@lixom.net> | 2013-07-12 10:59:39 -0700 |
commit | f4b96f5e4ff8d86699c851c10245e102809b0331 (patch) | |
tree | f766102263bed71738431cabb4d4f6f086005cd8 /drivers/gpio/gpio-langwell.c | |
parent | 9d8812df35be58a5da0c44182c1e4ba2507cc6a7 (diff) | |
parent | c24a6ae18abde53b048372b066b93b71b1b91154 (diff) |
Merge tag 'omap-for-v3.11/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Omap fixes and minor defconfig updates that would be good to
get in before -rc1.
* tag 'omap-for-v3.11/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: omap2plus_defconfig: Enable appended DTB support
ARM: OMAP2+: Enable TI_EDMA in omap2plus_defconfig
ARM: OMAP2+: omap2plus_defconfig: enable DRA752 thermal support by default
ARM: OMAP2+: omap2plus_defconfig: enable TI bandgap driver
ARM: OMAP2+: devices: remove duplicated include from devices.c
ARM: OMAP3: igep0020: Set DSS pins in correct mux mode.
ARM: OMAP2+: N900: enable N900-specific drivers even if device tree is enabled
ARM: OMAP2+: Cocci spatch "ptr_ret.spatch"
ARM: OMAP2+: Remove obsolete Makefile line
ARM: OMAP5: Enable Cortex A15 errata 798181
ARM: scu: provide inline dummy functions when SCU is not present
ARM: OMAP4: sleep: build OMAP4 specific functions only for OMAP4
ARM: OMAP2+: timer: initialize before using oh_name
Signed-off-by: Olof Johansson <olof@lixom.net>
Add/move/change conflicts in arch/arm/mach-omap2/Kconfig resolved.
Diffstat (limited to 'drivers/gpio/gpio-langwell.c')
-rw-r--r-- | drivers/gpio/gpio-langwell.c | 170 |
1 files changed, 29 insertions, 141 deletions
diff --git a/drivers/gpio/gpio-langwell.c b/drivers/gpio/gpio-langwell.c index 62ef10a641c..bfa1af1b519 100644 --- a/drivers/gpio/gpio-langwell.c +++ b/drivers/gpio/gpio-langwell.c @@ -1,7 +1,7 @@ /* * Moorestown platform Langwell chip GPIO driver * - * Copyright (c) 2008 - 2009, Intel Corporation. + * Copyright (c) 2008, 2009, 2013, Intel Corporation. * * 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 @@ -20,7 +20,6 @@ /* Supports: * Moorestown platform Langwell chip. * Medfield platform Penwell chip. - * Whitney point. */ #include <linux/module.h> @@ -65,7 +64,7 @@ enum GPIO_REG { struct lnw_gpio { struct gpio_chip chip; - void *reg_base; + void __iomem *reg_base; spinlock_t lock; struct pci_dev *pdev; struct irq_domain *domain; @@ -74,15 +73,13 @@ struct lnw_gpio { #define to_lnw_priv(chip) container_of(chip, struct lnw_gpio, chip) static void __iomem *gpio_reg(struct gpio_chip *chip, unsigned offset, - enum GPIO_REG reg_type) + enum GPIO_REG reg_type) { struct lnw_gpio *lnw = to_lnw_priv(chip); unsigned nreg = chip->ngpio / 32; u8 reg = offset / 32; - void __iomem *ptr; - ptr = (void __iomem *)(lnw->reg_base + reg_type * nreg * 4 + reg * 4); - return ptr; + return lnw->reg_base + reg_type * nreg * 4 + reg * 4; } static void __iomem *gpio_reg_2bit(struct gpio_chip *chip, unsigned offset, @@ -91,10 +88,8 @@ static void __iomem *gpio_reg_2bit(struct gpio_chip *chip, unsigned offset, struct lnw_gpio *lnw = to_lnw_priv(chip); unsigned nreg = chip->ngpio / 32; u8 reg = offset / 16; - void __iomem *ptr; - ptr = (void __iomem *)(lnw->reg_base + reg_type * nreg * 4 + reg * 4); - return ptr; + return lnw->reg_base + reg_type * nreg * 4 + reg * 4; } static int lnw_gpio_request(struct gpio_chip *chip, unsigned offset) @@ -305,11 +300,7 @@ static const struct irq_domain_ops lnw_gpio_irq_ops = { static int lnw_gpio_runtime_idle(struct device *dev) { - int err = pm_schedule_suspend(dev, 500); - - if (!err) - return 0; - + pm_schedule_suspend(dev, 500); return -EBUSY; } @@ -318,56 +309,40 @@ static const struct dev_pm_ops lnw_gpio_pm_ops = { }; static int lnw_gpio_probe(struct pci_dev *pdev, - const struct pci_device_id *id) + const struct pci_device_id *id) { - void *base; - resource_size_t start, len; + void __iomem *base; struct lnw_gpio *lnw; u32 gpio_base; u32 irq_base; int retval; int ngpio = id->driver_data; - retval = pci_enable_device(pdev); + retval = pcim_enable_device(pdev); if (retval) return retval; - retval = pci_request_regions(pdev, "langwell_gpio"); + retval = pcim_iomap_regions(pdev, 1 << 0 | 1 << 1, pci_name(pdev)); if (retval) { - dev_err(&pdev->dev, "error requesting resources\n"); - goto err_pci_req_region; - } - /* get the gpio_base from bar1 */ - start = pci_resource_start(pdev, 1); - len = pci_resource_len(pdev, 1); - base = ioremap_nocache(start, len); - if (!base) { - dev_err(&pdev->dev, "error mapping bar1\n"); - retval = -EFAULT; - goto err_ioremap; + dev_err(&pdev->dev, "I/O memory mapping error\n"); + return retval; } - irq_base = *(u32 *)base; - gpio_base = *((u32 *)base + 1); + + base = pcim_iomap_table(pdev)[1]; + + irq_base = readl(base); + gpio_base = readl(sizeof(u32) + base); + /* release the IO mapping, since we already get the info from bar1 */ - iounmap(base); - /* get the register base from bar0 */ - start = pci_resource_start(pdev, 0); - len = pci_resource_len(pdev, 0); - base = devm_ioremap_nocache(&pdev->dev, start, len); - if (!base) { - dev_err(&pdev->dev, "error mapping bar0\n"); - retval = -EFAULT; - goto err_ioremap; - } + pcim_iounmap_regions(pdev, 1 << 1); lnw = devm_kzalloc(&pdev->dev, sizeof(*lnw), GFP_KERNEL); if (!lnw) { - dev_err(&pdev->dev, "can't allocate langwell_gpio chip data\n"); - retval = -ENOMEM; - goto err_ioremap; + dev_err(&pdev->dev, "can't allocate chip data\n"); + return -ENOMEM; } - lnw->reg_base = base; + lnw->reg_base = pcim_iomap_table(pdev)[0]; lnw->chip.label = dev_name(&pdev->dev); lnw->chip.request = lnw_gpio_request; lnw->chip.direction_input = lnw_gpio_direction_input; @@ -380,18 +355,18 @@ static int lnw_gpio_probe(struct pci_dev *pdev, lnw->chip.can_sleep = 0; lnw->pdev = pdev; + spin_lock_init(&lnw->lock); + lnw->domain = irq_domain_add_simple(pdev->dev.of_node, ngpio, irq_base, &lnw_gpio_irq_ops, lnw); - if (!lnw->domain) { - retval = -ENOMEM; - goto err_ioremap; - } + if (!lnw->domain) + return -ENOMEM; pci_set_drvdata(pdev, lnw); retval = gpiochip_add(&lnw->chip); if (retval) { - dev_err(&pdev->dev, "langwell gpiochip_add error %d\n", retval); - goto err_ioremap; + dev_err(&pdev->dev, "gpiochip_add error %d\n", retval); + return retval; } lnw_irq_init_hw(lnw); @@ -399,18 +374,10 @@ static int lnw_gpio_probe(struct pci_dev *pdev, irq_set_handler_data(pdev->irq, lnw); irq_set_chained_handler(pdev->irq, lnw_irq_handler); - spin_lock_init(&lnw->lock); - pm_runtime_put_noidle(&pdev->dev); pm_runtime_allow(&pdev->dev); return 0; - -err_ioremap: - pci_release_regions(pdev); -err_pci_req_region: - pci_disable_device(pdev); - return retval; } static struct pci_driver lnw_gpio_driver = { @@ -422,88 +389,9 @@ static struct pci_driver lnw_gpio_driver = { }, }; - -static int wp_gpio_probe(struct platform_device *pdev) -{ - struct lnw_gpio *lnw; - struct gpio_chip *gc; - struct resource *rc; - int retval = 0; - - rc = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!rc) - return -EINVAL; - - lnw = kzalloc(sizeof(struct lnw_gpio), GFP_KERNEL); - if (!lnw) { - dev_err(&pdev->dev, - "can't allocate whitneypoint_gpio chip data\n"); - return -ENOMEM; - } - lnw->reg_base = ioremap_nocache(rc->start, resource_size(rc)); - if (lnw->reg_base == NULL) { - retval = -EINVAL; - goto err_kmalloc; - } - spin_lock_init(&lnw->lock); - gc = &lnw->chip; - gc->label = dev_name(&pdev->dev); - gc->owner = THIS_MODULE; - gc->direction_input = lnw_gpio_direction_input; - gc->direction_output = lnw_gpio_direction_output; - gc->get = lnw_gpio_get; - gc->set = lnw_gpio_set; - gc->to_irq = NULL; - gc->base = 0; - gc->ngpio = 64; - gc->can_sleep = 0; - retval = gpiochip_add(gc); - if (retval) { - dev_err(&pdev->dev, "whitneypoint gpiochip_add error %d\n", - retval); - goto err_ioremap; - } - platform_set_drvdata(pdev, lnw); - return 0; -err_ioremap: - iounmap(lnw->reg_base); -err_kmalloc: - kfree(lnw); - return retval; -} - -static int wp_gpio_remove(struct platform_device *pdev) -{ - struct lnw_gpio *lnw = platform_get_drvdata(pdev); - int err; - err = gpiochip_remove(&lnw->chip); - if (err) - dev_err(&pdev->dev, "failed to remove gpio_chip.\n"); - iounmap(lnw->reg_base); - kfree(lnw); - platform_set_drvdata(pdev, NULL); - return 0; -} - -static struct platform_driver wp_gpio_driver = { - .probe = wp_gpio_probe, - .remove = wp_gpio_remove, - .driver = { - .name = "wp_gpio", - .owner = THIS_MODULE, - }, -}; - static int __init lnw_gpio_init(void) { - int ret; - ret = pci_register_driver(&lnw_gpio_driver); - if (ret < 0) - return ret; - ret = platform_driver_register(&wp_gpio_driver); - if (ret < 0) - pci_unregister_driver(&lnw_gpio_driver); - return ret; + return pci_register_driver(&lnw_gpio_driver); } device_initcall(lnw_gpio_init); |