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sm501: gpio dynamic registration for PCI devices

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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>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Arnaud Patard 2008-07-25 01:46:00 -07:00 • committed by Linus Torvalds
parent f61be273d3
commit 60e540d617
2 changed files with 5 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/mfd/sm501.c
View file

@ -996,12 +996,13 @@ static int __devinit sm501_gpio_register_chip(struct sm501_devdata *sm,
{ {
struct sm501_platdata *pdata = sm->platdata; struct sm501_platdata *pdata = sm->platdata;
struct gpio_chip *gchip = &chip->gpio; 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)); memcpy(chip, &gpio_chip_template, sizeof(struct gpio_chip));
if (chip == &gpio->high) { if (chip == &gpio->high) {
base += 32; if (base > 0)
base += 32;
chip->regbase = gpio->regs + SM501_GPIO_DATA_HIGH; chip->regbase = gpio->regs + SM501_GPIO_DATA_HIGH;
gchip->label = "SM501-HIGH"; gchip->label = "SM501-HIGH";
} else { } else {
@ -1452,6 +1453,7 @@ static struct sm501_platdata_fb sm501_fb_pdata = {
static struct sm501_platdata sm501_pci_platdata = { static struct sm501_platdata sm501_pci_platdata = {
.init = &sm501_pci_initdata, .init = &sm501_pci_initdata,
.fb = &sm501_fb_pdata, .fb = &sm501_fb_pdata,
.gpio_base = -1,
}; };
static int sm501_pci_probe(struct pci_dev *dev, static int sm501_pci_probe(struct pci_dev *dev,

2
include/linux/sm501.h
View file

@ -156,7 +156,7 @@ struct sm501_platdata {
struct sm501_platdata_fb *fb; struct sm501_platdata_fb *fb;
int flags; int flags;
unsigned gpio_base; int gpio_base;
int (*get_power)(struct device *dev); int (*get_power)(struct device *dev);
int (*set_power)(struct device *dev, unsigned int on); int (*set_power)(struct device *dev, unsigned int on);