[patch 3/4] SM501: GPIO dynamic registration for PCI devices

Ben Dooks
2008-06-22T21:16:00Z

[-- Attachment #1: thirdparty/rtp-sm501-pci-gpio.patch --]
[-- Type: text/plain, Size: 1929 bytes --]

From: Arnaud Patard <apatard@mandriva.com>

The SM501 PCI card requires a dyanmic gpio allocation as
the number of cards is not known at compile time. Fixup
the platform data and registration to deal with this.

Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Arnaud Patard <apatard@mandriva.com>

Index: linux-2.6.26-rc6-quilt3/drivers/mfd/sm501.c
===================================================================
--- linux-2.6.26-rc6-quilt3.orig/drivers/mfd/sm501.c 2008-06-20 16:34:02.000000000 +0100
+++ linux-2.6.26-rc6-quilt3/drivers/mfd/sm501.c 2008-06-20 16:35:11.000000000 +0100
@@ -996,12 +996,13 @@ static int __devinit sm501_gpio_register
{
struct sm501_platdata *pdata = sm->platdata;
struct gpio_chip *gchip = &chip->gpio;
- unsigned base = pdata->gpio_base;
+ int base = pdata->gpio_base;

memcpy(chip, &gpio_chip_template, sizeof(struct gpio_chip));

if (chip == &gpio->high) {
- base += 32;
+ if (base > 0)
+ base += 32;
chip->regbase = gpio->regs + SM501_GPIO_DATA_HIGH;
gchip->label = "SM501-HIGH";
} else {
@@ -1452,6 +1453,7 @@ static struct sm501_platdata_fb sm501_fb
static struct sm501_platdata sm501_pci_platdata = {
.init = &sm501_pci_initdata,
.fb = &sm501_fb_pdata,
+ .gpio_base = -1,
};

static int sm501_pci_probe(struct pci_dev *dev,
Index: linux-2.6.26-rc6-quilt3/include/linux/sm501.h
===================================================================
--- linux-2.6.26-rc6-quilt3.orig/include/linux/sm501.h 2008-06-20 16:34:02.000000000 +0100
+++ linux-2.6.26-rc6-quilt3/include/linux/sm501.h 2008-06-20 16:35:11.000000000 +0100
@@ -156,7 +156,7 @@ struct sm501_platdata {
struct sm501_platdata_fb *fb;

int flags;
- unsigned gpio_base;
+ int gpio_base;

int (*get_power)(struct device *dev);
int (*set_power)(struct device *dev, unsigned int on);