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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-14 09:08:00 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-14 09:08:00 -0800
commit822e5215f9eef86c1dd56d5696bf55a212b0e3f0 (patch)
tree661de9888a0edef872e7366df09831bf7a5bc067 /drivers/gpio
parentc1e0d97d3d63d5173baf8c39a13dc5c25b031bd4 (diff)
parent92d50a4132977b932ed830fa58c05deeb5c524f0 (diff)
downloadop-kernel-dev-822e5215f9eef86c1dd56d5696bf55a212b0e3f0.zip
op-kernel-dev-822e5215f9eef86c1dd56d5696bf55a212b0e3f0.tar.gz
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (59 commits) mfd: ab8500-core chip version cut 2.0 support mfd: Flag WM831x /IRQ as a wake source mfd: Convert WM831x away from legacy I2C PM operations regulator: Support MAX8998/LP3974 DVS-GPIO mfd: Support LP3974 RTC i2c: Convert SCx200 driver from using raw PCI to platform device x86: OLPC: convert olpc-xo1 driver from pci device to platform device mfd: MAX8998/LP3974 hibernation support mfd/ab8500: remove spi support mfd: Remove ARCH_U8500 dependency from AB8500 misc: Make AB8500_PWM driver depend on U8500 due to PWM breakage mfd: Add __devexit annotation for vx855_remove mfd: twl6030 irq_data conversion. gpio: Fix cs5535 printk warnings misc: Fix cs5535 printk warnings mfd: Convert Wolfson MFD drivers to use irq_data accessor function mfd: Convert TWL4030 to new irq_ APIs mfd: Convert tps6586x driver to new irq_ API mfd: Convert tc6393xb driver to new irq_ APIs mfd: Convert t7166xb driver to new irq_ API ...
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/cs5535-gpio.c93
1 files changed, 31 insertions, 62 deletions
diff --git a/drivers/gpio/cs5535-gpio.c b/drivers/gpio/cs5535-gpio.c
index 815d98b2..0d05ea7 100644
--- a/drivers/gpio/cs5535-gpio.c
+++ b/drivers/gpio/cs5535-gpio.c
@@ -11,14 +11,13 @@
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/module.h>
-#include <linux/pci.h>
+#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/cs5535.h>
#include <asm/msr.h>
#define DRV_NAME "cs5535-gpio"
-#define GPIO_BAR 1
/*
* Some GPIO pins
@@ -47,7 +46,7 @@ static struct cs5535_gpio_chip {
struct gpio_chip chip;
resource_size_t base;
- struct pci_dev *pdev;
+ struct platform_device *pdev;
spinlock_t lock;
} cs5535_gpio_chip;
@@ -301,10 +300,10 @@ static struct cs5535_gpio_chip cs5535_gpio_chip = {
},
};
-static int __init cs5535_gpio_probe(struct pci_dev *pdev,
- const struct pci_device_id *pci_id)
+static int __devinit cs5535_gpio_probe(struct platform_device *pdev)
{
- int err;
+ struct resource *res;
+ int err = -EIO;
ulong mask_orig = mask;
/* There are two ways to get the GPIO base address; one is by
@@ -314,25 +313,23 @@ static int __init cs5535_gpio_probe(struct pci_dev *pdev,
* it turns out to be unreliable in the face of crappy BIOSes, we
* can always go back to using MSRs.. */
- err = pci_enable_device_io(pdev);
- if (err) {
- dev_err(&pdev->dev, "can't enable device IO\n");
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "can't fetch device resource info\n");
goto done;
}
- err = pci_request_region(pdev, GPIO_BAR, DRV_NAME);
- if (err) {
- dev_err(&pdev->dev, "can't alloc PCI BAR #%d\n", GPIO_BAR);
+ if (!request_region(res->start, resource_size(res), pdev->name)) {
+ dev_err(&pdev->dev, "can't request region\n");
goto done;
}
/* set up the driver-specific struct */
- cs5535_gpio_chip.base = pci_resource_start(pdev, GPIO_BAR);
+ cs5535_gpio_chip.base = res->start;
cs5535_gpio_chip.pdev = pdev;
spin_lock_init(&cs5535_gpio_chip.lock);
- dev_info(&pdev->dev, "allocated PCI BAR #%d: base 0x%llx\n", GPIO_BAR,
- (unsigned long long) cs5535_gpio_chip.base);
+ dev_info(&pdev->dev, "reserved resource region %pR\n", res);
/* mask out reserved pins */
mask &= 0x1F7FFFFF;
@@ -350,78 +347,49 @@ static int __init cs5535_gpio_probe(struct pci_dev *pdev,
if (err)
goto release_region;
- dev_info(&pdev->dev, DRV_NAME ": GPIO support successfully loaded.\n");
+ dev_info(&pdev->dev, "GPIO support successfully loaded.\n");
return 0;
release_region:
- pci_release_region(pdev, GPIO_BAR);
+ release_region(res->start, resource_size(res));
done:
return err;
}
-static void __exit cs5535_gpio_remove(struct pci_dev *pdev)
+static int __devexit cs5535_gpio_remove(struct platform_device *pdev)
{
+ struct resource *r;
int err;
err = gpiochip_remove(&cs5535_gpio_chip.chip);
if (err) {
/* uhh? */
dev_err(&pdev->dev, "unable to remove gpio_chip?\n");
+ return err;
}
- pci_release_region(pdev, GPIO_BAR);
-}
-
-static struct pci_device_id cs5535_gpio_pci_tbl[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_ISA) },
- { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA) },
- { 0, },
-};
-MODULE_DEVICE_TABLE(pci, cs5535_gpio_pci_tbl);
-/*
- * We can't use the standard PCI driver registration stuff here, since
- * that allows only one driver to bind to each PCI device (and we want
- * multiple drivers to be able to bind to the device). Instead, manually
- * scan for the PCI device, request a single region, and keep track of the
- * devices that we're using.
- */
-
-static int __init cs5535_gpio_scan_pci(void)
-{
- struct pci_dev *pdev;
- int err = -ENODEV;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(cs5535_gpio_pci_tbl); i++) {
- pdev = pci_get_device(cs5535_gpio_pci_tbl[i].vendor,
- cs5535_gpio_pci_tbl[i].device, NULL);
- if (pdev) {
- err = cs5535_gpio_probe(pdev, &cs5535_gpio_pci_tbl[i]);
- if (err)
- pci_dev_put(pdev);
-
- /* we only support a single CS5535/6 southbridge */
- break;
- }
- }
-
- return err;
+ r = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ release_region(r->start, resource_size(r));
+ return 0;
}
-static void __exit cs5535_gpio_free_pci(void)
-{
- cs5535_gpio_remove(cs5535_gpio_chip.pdev);
- pci_dev_put(cs5535_gpio_chip.pdev);
-}
+static struct platform_driver cs5535_gpio_drv = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = cs5535_gpio_probe,
+ .remove = __devexit_p(cs5535_gpio_remove),
+};
static int __init cs5535_gpio_init(void)
{
- return cs5535_gpio_scan_pci();
+ return platform_driver_register(&cs5535_gpio_drv);
}
static void __exit cs5535_gpio_exit(void)
{
- cs5535_gpio_free_pci();
+ platform_driver_unregister(&cs5535_gpio_drv);
}
module_init(cs5535_gpio_init);
@@ -430,3 +398,4 @@ module_exit(cs5535_gpio_exit);
MODULE_AUTHOR("Andres Salomon <dilinger@queued.net>");
MODULE_DESCRIPTION("AMD CS5535/CS5536 GPIO driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
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