USB: ohci-at91 uses generic GPIO calls
Update the ohci-at91 bus glue to start understanding about the per-port power switch GPIOs it's given (on the sam9263-ek and potentially other boards). For the moment this just claims them and forces them active (assuming active-low power enables) whenever the HCD is loaded. The assumption is still that board setup configures the GPIOs. Using gpio_request() tracks actual usage and guards against conflict. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -17,6 +17,8 @@
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#include <asm/mach-types.h>
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#include <asm/mach-types.h>
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#include <asm/hardware.h>
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#include <asm/hardware.h>
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#include <asm/gpio.h>
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#include <asm/arch/board.h>
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#include <asm/arch/board.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/cpu.h>
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@ -271,12 +273,41 @@ static const struct hc_driver ohci_at91_hc_driver = {
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static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
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static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
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{
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{
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struct at91_usbh_data *pdata = pdev->dev.platform_data;
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int i;
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if (pdata) {
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/* REVISIT make the driver support per-port power switching,
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* and also overcurrent detection. Here we assume the ports
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* are always powered while this driver is active, and use
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* active-low power switches.
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*/
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for (i = 0; i < pdata->ports; i++) {
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if (pdata->vbus_pin[i] <= 0)
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continue;
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gpio_request(pdata->vbus_pin[i], "ohci_vbus");
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gpio_direction_output(pdata->vbus_pin[i], 0);
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}
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}
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device_init_wakeup(&pdev->dev, 1);
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device_init_wakeup(&pdev->dev, 1);
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return usb_hcd_at91_probe(&ohci_at91_hc_driver, pdev);
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return usb_hcd_at91_probe(&ohci_at91_hc_driver, pdev);
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}
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}
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static int ohci_hcd_at91_drv_remove(struct platform_device *pdev)
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static int ohci_hcd_at91_drv_remove(struct platform_device *pdev)
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{
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{
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struct at91_usbh_data *pdata = pdev->dev.platform_data;
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int i;
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if (pdata) {
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for (i = 0; i < pdata->ports; i++) {
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if (pdata->vbus_pin[i] <= 0)
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continue;
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gpio_direction_output(pdata->vbus_pin[i], 1);
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gpio_free(pdata->vbus_pin[i]);
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}
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}
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device_init_wakeup(&pdev->dev, 0);
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device_init_wakeup(&pdev->dev, 0);
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return usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev);
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return usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev);
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}
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}
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