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Commit ba593e59 authored by Sascha Hauer's avatar Sascha Hauer
Browse files

fsl_mx3_udc: Add i.MX35 support 



The i.MX35 works fine with this driver, but we do not have
the usb_ahb clock.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
parent 9fd96bbb

drivers/usb/gadget/fsl_mx3_udc.c

+20 −11
Original line number Diff line number Diff line
@@ -17,6 +17,8 @@ 
#include <linux/fsl_devices.h>

#include <linux/platform_device.h>



#include <mach/hardware.h>



static struct clk *mxc_ahb_clk;

static struct clk *mxc_usb_clk;
@@ -28,6 +30,7 @@ int fsl_udc_clk_init(struct platform_device *pdev) 


	pdata = pdev->dev.platform_data;



	if (!cpu_is_mx35()) {

		mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb");

		if (IS_ERR(mxc_ahb_clk))

			return PTR_ERR(mxc_ahb_clk);
@@ -37,6 +40,7 @@ int fsl_udc_clk_init(struct platform_device *pdev) 
			dev_err(&pdev->dev, "clk_enable(\"usb_ahb\") failed\n");

			goto eenahb;

		}

	}



	/* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */

	mxc_usb_clk = clk_get(&pdev->dev, "usb");
@@ -50,6 +54,7 @@ int fsl_udc_clk_init(struct platform_device *pdev) 
	if (pdata->phy_mode != FSL_USB2_PHY_ULPI &&

	    (freq < 59999000 || freq > 60001000)) {

		dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq);

		ret = -EINVAL;

		goto eclkrate;

	}
@@ -66,8 +71,10 @@ eclkrate: 
	clk_put(mxc_usb_clk);

	mxc_usb_clk = NULL;

egusb:

	if (!cpu_is_mx35())

		clk_disable(mxc_ahb_clk);

eenahb:

	if (!cpu_is_mx35())

		clk_put(mxc_ahb_clk);

	return ret;

}
@@ -90,6 +97,8 @@ void fsl_udc_clk_release(void) 
		clk_disable(mxc_usb_clk);

		clk_put(mxc_usb_clk);

	}

	if (!cpu_is_mx35()) {

		clk_disable(mxc_ahb_clk);

		clk_put(mxc_ahb_clk);

	}

}