Commit 4b10cfd4 authored by Kumar Gala's avatar Kumar Gala Committed by Paul Mackerras
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[PATCH] powerpc: Add platform support for MPC834x USB controllers 



Setup the platform devices needed by the Freescale EHCI USB
host controllers based on a flat device tree

Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 158daa4c

arch/powerpc/sysdev/fsl_soc.c

+140 −0
Original line number Diff line number Diff line
@@ -351,3 +351,143 @@ static int __init mpc83xx_wdt_init(void) 


arch_initcall(mpc83xx_wdt_init);

#endif



static enum fsl_usb2_phy_modes determine_usb_phy(char * phy_type)

{

	if (!phy_type)

		return FSL_USB2_PHY_NONE;

	if (!strcasecmp(phy_type, "ulpi"))

		return FSL_USB2_PHY_ULPI;

	if (!strcasecmp(phy_type, "utmi"))

		return FSL_USB2_PHY_UTMI;

	if (!strcasecmp(phy_type, "utmi_wide"))

		return FSL_USB2_PHY_UTMI_WIDE;

	if (!strcasecmp(phy_type, "serial"))

		return FSL_USB2_PHY_SERIAL;



	return FSL_USB2_PHY_NONE;

}



static int __init fsl_usb_of_init(void)

{

	struct device_node *np;

	unsigned int i;

	struct platform_device *usb_dev;

	int ret;



	for (np = NULL, i = 0;

	     (np = of_find_compatible_node(np, "usb", "fsl-usb2-mph")) != NULL;

	     i++) {

		struct resource r[2];

		struct fsl_usb2_platform_data usb_data;

		unsigned char *prop = NULL;



		memset(&r, 0, sizeof(r));

		memset(&usb_data, 0, sizeof(usb_data));



		ret = of_address_to_resource(np, 0, &r[0]);

		if (ret)

			goto err;



		r[1].start = np->intrs[0].line;

		r[1].end = np->intrs[0].line;

		r[1].flags = IORESOURCE_IRQ;



		usb_dev =

		    platform_device_register_simple("fsl-usb2-mph", i, r, 2);

		if (IS_ERR(usb_dev)) {

			ret = PTR_ERR(usb_dev);

			goto err;

		}



		usb_dev->dev.coherent_dma_mask = 0xffffffffUL;

		usb_dev->dev.dma_mask = &usb_dev->dev.coherent_dma_mask;



		usb_data.operating_mode = FSL_USB2_MPH_HOST;



		prop = get_property(np, "port0", NULL);

		if (prop)

			usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;



		prop = get_property(np, "port1", NULL);

		if (prop)

			usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;



		prop = get_property(np, "phy_type", NULL);

		usb_data.phy_mode = determine_usb_phy(prop);



		ret =

		    platform_device_add_data(usb_dev, &usb_data,

					     sizeof(struct

						    fsl_usb2_platform_data));

		if (ret)

			goto unreg;

	}



	return 0;



unreg:

	platform_device_unregister(usb_dev);

err:

	return ret;

}



arch_initcall(fsl_usb_of_init);



static int __init fsl_usb_dr_of_init(void)

{

	struct device_node *np;

	unsigned int i;

	struct platform_device *usb_dev;

	int ret;



	for (np = NULL, i = 0;

	     (np = of_find_compatible_node(np, "usb", "fsl-usb2-dr")) != NULL;

	     i++) {

		struct resource r[2];

		struct fsl_usb2_platform_data usb_data;

		unsigned char *prop = NULL;



		memset(&r, 0, sizeof(r));

		memset(&usb_data, 0, sizeof(usb_data));



		ret = of_address_to_resource(np, 0, &r[0]);

		if (ret)

			goto err;



		r[1].start = np->intrs[0].line;

		r[1].end = np->intrs[0].line;

		r[1].flags = IORESOURCE_IRQ;



		usb_dev =

		    platform_device_register_simple("fsl-usb2-dr", i, r, 2);

		if (IS_ERR(usb_dev)) {

			ret = PTR_ERR(usb_dev);

			goto err;

		}



		usb_dev->dev.coherent_dma_mask = 0xffffffffUL;

		usb_dev->dev.dma_mask = &usb_dev->dev.coherent_dma_mask;



		usb_data.operating_mode = FSL_USB2_DR_HOST;



		prop = get_property(np, "phy_type", NULL);

		usb_data.phy_mode = determine_usb_phy(prop);



		ret =

		    platform_device_add_data(usb_dev, &usb_data,

					     sizeof(struct

						    fsl_usb2_platform_data));

		if (ret)

			goto unreg;

	}



	return 0;



unreg:

	platform_device_unregister(usb_dev);

err:

	return ret;

}



arch_initcall(fsl_usb_dr_of_init);