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[ARM] pxa: update PXA UDC driver to use clk support

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Note: this produces a WARN() dump.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2007-08-20 10:33:35 +01:00 committed by Russell King
parent b049bd9de4
commit 6549e6c957
2 changed files with 43 additions and 26 deletions
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68
drivers/usb/gadget/pxa2xx_udc.c
View file

@ -43,6 +43,8 @@
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/irq.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <asm/byteorder.h>
#include <asm/dma.h>
@ -1157,7 +1159,7 @@ static void udc_disable(struct pxa2xx_udc *dev)
#ifdef CONFIG_ARCH_PXA
/* Disable clock for USB device */
pxa_set_cken(CKEN_USB, 0);
clk_disable(dev->clk);
#endif
ep0_idle (dev);
@ -1202,8 +1204,7 @@ static void udc_enable (struct pxa2xx_udc *dev)
#ifdef CONFIG_ARCH_PXA
/* Enable clock for USB device */
pxa_set_cken(CKEN_USB, 1);
udelay(5);
clk_enable(dev->clk);
#endif
/* try to clear these bits before we enable the udc */
@ -2137,6 +2138,14 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
if (irq < 0)
return -ENODEV;
#ifdef CONFIG_ARCH_PXA
dev->clk = clk_get(&pdev->dev, "UDCCLK");
if (IS_ERR(dev->clk)) {
retval = PTR_ERR(dev->clk);
goto err_clk;
}
#endif
pr_debug("%s: IRQ %d%s%s\n", driver_name, irq,
dev->has_cfr ? "" : " (!cfr)",
SIZE_STR "(pio)"
@ -2152,11 +2161,10 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev,
"can't get vbus gpio %d, err: %d\n",
dev->mach->gpio_vbus, retval);
return -EBUSY;
goto err_gpio_vbus;
}
gpio_direction_input(dev->mach->gpio_vbus);
vbus_irq = gpio_to_irq(dev->mach->gpio_vbus);
set_irq_type(vbus_irq, IRQT_BOTHEDGE);
} else
vbus_irq = 0;
@ -2166,9 +2174,7 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev,
"can't get pullup gpio %d, err: %d\n",
dev->mach->gpio_pullup, retval);
if (dev->mach->gpio_vbus)
gpio_free(dev->mach->gpio_vbus);
return -EBUSY;
goto err_gpio_pullup;
}
gpio_direction_output(dev->mach->gpio_pullup, 0);
}
@ -2195,11 +2201,7 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
if (retval != 0) {
printk(KERN_ERR "%s: can't get irq %d, err %d\n",
driver_name, irq, retval);
if (dev->mach->gpio_pullup)
gpio_free(dev->mach->gpio_pullup);
if (dev->mach->gpio_vbus)
gpio_free(dev->mach->gpio_vbus);
return -EBUSY;
goto err_irq1;
}
dev->got_irq = 1;
@ -2213,12 +2215,7 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
printk(KERN_ERR "%s: can't get irq %i, err %d\n",
driver_name, LUBBOCK_USB_DISC_IRQ, retval);
lubbock_fail0:
free_irq(irq, dev);
if (dev->mach->gpio_pullup)
gpio_free(dev->mach->gpio_pullup);
if (dev->mach->gpio_vbus)
gpio_free(dev->mach->gpio_vbus);
return -EBUSY;
goto err_irq_lub;
}
retval = request_irq(LUBBOCK_USB_IRQ,
lubbock_vbus_irq,
@ -2234,22 +2231,37 @@ lubbock_fail0:
#endif
if (vbus_irq) {
retval = request_irq(vbus_irq, udc_vbus_irq,
IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
IRQF_DISABLED | IRQF_SAMPLE_RANDOM |
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
driver_name, dev);
if (retval != 0) {
printk(KERN_ERR "%s: can't get irq %i, err %d\n",
driver_name, vbus_irq, retval);
free_irq(irq, dev);
if (dev->mach->gpio_pullup)
gpio_free(dev->mach->gpio_pullup);
if (dev->mach->gpio_vbus)
gpio_free(dev->mach->gpio_vbus);
return -EBUSY;
goto err_vbus_irq;
}
}
create_proc_files();
return 0;
err_vbus_irq:
#ifdef CONFIG_ARCH_LUBBOCK
free_irq(LUBBOCK_USB_DISC_IRQ, dev);
err_irq_lub:
#endif
free_irq(irq, dev);
err_irq1:
if (dev->mach->gpio_pullup)
gpio_free(dev->mach->gpio_pullup);
err_gpio_pullup:
if (dev->mach->gpio_vbus)
gpio_free(dev->mach->gpio_vbus);
err_gpio_vbus:
#ifdef CONFIG_ARCH_PXA
clk_put(dev->clk);
err_clk:
#endif
return retval;
}
static void pxa2xx_udc_shutdown(struct platform_device *_dev)
@ -2284,6 +2296,10 @@ static int __exit pxa2xx_udc_remove(struct platform_device *pdev)
if (dev->mach->gpio_pullup)
gpio_free(dev->mach->gpio_pullup);
#ifdef CONFIG_ARCH_PXA
clk_put(dev->clk);
#endif
platform_set_drvdata(pdev, NULL);
the_controller = NULL;
return 0;

1
drivers/usb/gadget/pxa2xx_udc.h
View file

@ -125,6 +125,7 @@ struct pxa2xx_udc {
struct timer_list timer;
struct device *dev;
struct clk *clk;
struct pxa2xx_udc_mach_info *mach;
u64 dma_mask;
struct pxa2xx_ep ep [PXA_UDC_NUM_ENDPOINTS];