diff options
Diffstat (limited to 'arch/arm/mach-u300')
| -rw-r--r-- | arch/arm/mach-u300/gpio.c | 46 |
1 files changed, 24 insertions, 22 deletions
diff --git a/arch/arm/mach-u300/gpio.c b/arch/arm/mach-u300/gpio.c index 2d5ae8ecb8c8..308cdb197a92 100644 --- a/arch/arm/mach-u300/gpio.c +++ b/arch/arm/mach-u300/gpio.c @@ -36,6 +36,7 @@ static struct clk *clk; /* Memory resource */ static struct resource *memres; static void __iomem *virtbase; +static struct device *gpiodev; struct u300_gpio_port { const char *name; @@ -264,8 +265,8 @@ static struct gpio_struct gpio_pin[U300_GPIO_MAX]; int gpio_register_callback(unsigned gpio, int (*func)(void *arg), void *data) { if (gpio_pin[gpio].callback) - printk(KERN_WARNING "GPIO: %s: WARNING: callback already " \ - "registered for gpio pin#%d\n", __func__, gpio); + dev_warn(gpiodev, "%s: WARNING: callback already " + "registered for gpio pin#%d\n", __func__, gpio); gpio_pin[gpio].callback = func; gpio_pin[gpio].data = data; @@ -276,8 +277,8 @@ EXPORT_SYMBOL(gpio_register_callback); int gpio_unregister_callback(unsigned gpio) { if (!gpio_pin[gpio].callback) - printk(KERN_WARNING "GPIO: %s: WARNING: callback already " \ - "unregistered for gpio pin#%d\n", __func__, gpio); + dev_warn(gpiodev, "%s: WARNING: callback already " + "unregistered for gpio pin#%d\n", __func__, gpio); gpio_pin[gpio].callback = NULL; gpio_pin[gpio].data = NULL; @@ -303,8 +304,8 @@ void gpio_free(unsigned gpio) gpio_users--; gpio_pin[gpio].users--; if (unlikely(gpio_pin[gpio].users < 0)) { - printk(KERN_WARNING "GPIO: Warning: gpio#%d release mismatch\n", - gpio); + dev_warn(gpiodev, "warning: gpio#%d release mismatch\n", + gpio); gpio_pin[gpio].users = 0; } @@ -492,7 +493,7 @@ static irqreturn_t gpio_irq_handler(int irq, void *dev_id) if (gpio_pin[gpio].callback) (void)gpio_pin[gpio].callback(gpio_pin[gpio].data); else - printk(KERN_DEBUG "GPIO: Stray GPIO IRQ on line %d\n", + dev_dbg(gpiodev, "stray GPIO IRQ on line %d\n", gpio); } return IRQ_HANDLED; @@ -548,25 +549,26 @@ static void gpio_set_initial_values(void) #endif } -static int __devinit gpio_probe(struct platform_device *pdev) +static int __init gpio_probe(struct platform_device *pdev) { u32 val; int err = 0; int i; int num_irqs; + gpiodev = &pdev->dev; memset(gpio_pin, 0, sizeof(gpio_pin)); /* Get GPIO clock */ clk = clk_get(&pdev->dev, NULL); if (IS_ERR(clk)) { err = PTR_ERR(clk); - printk(KERN_ERR "GPIO: could not get GPIO clock\n"); + dev_err(gpiodev, "could not get GPIO clock\n"); goto err_no_clk; } err = clk_enable(clk); if (err) { - printk(KERN_ERR "GPIO: could not enable GPIO clock\n"); + dev_err(gpiodev, "could not enable GPIO clock\n"); goto err_no_clk_enable; } @@ -580,22 +582,24 @@ static int __devinit gpio_probe(struct platform_device *pdev) goto err_no_ioregion; } - virtbase = ioremap(memres->start, memres->end - memres->start + 1); + virtbase = ioremap(memres->start, resource_size(memres)); if (!virtbase) { err = -ENOMEM; goto err_no_ioremap; } + dev_info(gpiodev, "remapped 0x%08x to %p\n", + memres->start, virtbase); #ifdef U300_COH901335 - printk(KERN_INFO "GPIO: Initializing GPIO Controller COH 901 335\n"); + dev_info(gpiodev, "initializing GPIO Controller COH 901 335\n"); /* Turn on the GPIO block */ writel(U300_GPIO_CR_BLOCK_CLOCK_ENABLE, virtbase + U300_GPIO_CR); #endif #ifdef U300_COH901571_3 - printk(KERN_INFO "GPIO: Initializing GPIO Controller COH 901 571/3\n"); + dev_info(gpiodev, "initializing GPIO Controller COH 901 571/3\n"); val = readl(virtbase + U300_GPIO_CR); - printk(KERN_INFO "GPIO: COH901571/3 block version: %d, " \ + dev_info(gpiodev, "COH901571/3 block version: %d, " \ "number of cores: %d\n", ((val & 0x0000FE00) >> 9), ((val & 0x000001FC) >> 2)); @@ -623,15 +627,14 @@ static int __devinit gpio_probe(struct platform_device *pdev) gpio_ports[num_irqs].name, &gpio_ports[num_irqs]); if (err) { - printk(KERN_CRIT "GPIO: Cannot allocate IRQ for %s!\n", - gpio_ports[num_irqs].name); + dev_err(gpiodev, "cannot allocate IRQ for %s!\n", + gpio_ports[num_irqs].name); goto err_no_irq; } /* Turns off PortX_irq_force */ writel(0x0, virtbase + U300_GPIO_PXIFR + num_irqs * U300_GPIO_PORTX_SPACING); } - printk(KERN_INFO "GPIO: U300 gpio module loaded\n"); return 0; @@ -647,11 +650,11 @@ static int __devinit gpio_probe(struct platform_device *pdev) err_no_clk_enable: clk_put(clk); err_no_clk: - printk(KERN_INFO "GPIO: module ERROR:%d\n", err); + dev_info(gpiodev, "module ERROR:%d\n", err); return err; } -static int __devexit gpio_remove(struct platform_device *pdev) +static int __exit gpio_remove(struct platform_device *pdev) { int i; @@ -670,14 +673,13 @@ static struct platform_driver gpio_driver = { .driver = { .name = "u300-gpio", }, - .probe = gpio_probe, - .remove = __devexit_p(gpio_remove), + .remove = __exit_p(gpio_remove), }; static int __init u300_gpio_init(void) { - return platform_driver_register(&gpio_driver); + return platform_driver_probe(&gpio_driver, gpio_probe); } static void __exit u300_gpio_exit(void) |