arch/powerpc/sysdev/fsl_soc.c - maze/linux - Git at Google

 /*
  * FSL SoC setup code
  *
  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
  *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
  * Free Software Foundation;  either version 2 of the  License, or (at your
  * option) any later version.
  */

 #include <linux/config.h>
 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/major.h>
 #include <linux/delay.h>
 #include <linux/irq.h>
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/fsl_devices.h>

 #include <asm/system.h>
 #include <asm/atomic.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/prom.h>
 #include <sysdev/fsl_soc.h>
 #include <mm/mmu_decl.h>

 static phys_addr_t immrbase = -1;

 phys_addr_t get_immrbase(void)
 {
 	struct device_node *soc;

 	if (immrbase != -1)
 		return immrbase;

 	soc = of_find_node_by_type(NULL, "soc");
 	if (soc != 0) {
 		unsigned int size;
 		void *prop = get_property(soc, "reg", &size);
 		immrbase = of_translate_address(soc, prop);
 		of_node_put(soc);
 	};

 	return immrbase;
 }
 EXPORT_SYMBOL(get_immrbase);

 static const char * gfar_tx_intr = "tx";
 static const char * gfar_rx_intr = "rx";
 static const char * gfar_err_intr = "error";

 static int __init gfar_of_init(void)
 {
 	struct device_node *np;
 	unsigned int i;
 	struct platform_device *mdio_dev, *gfar_dev;
 	struct resource res;
 	int ret;

 	for (np = NULL, i = 0; (np = of_find_compatible_node(np, "mdio", "gianfar")) != NULL; i++) {
 		int k;
 		struct device_node *child = NULL;
 		struct gianfar_mdio_data mdio_data;

 		memset(&res, 0, sizeof(res));
 		memset(&mdio_data, 0, sizeof(mdio_data));

 		ret = of_address_to_resource(np, 0, &res);
 		if (ret)
 			goto mdio_err;

 		mdio_dev = platform_device_register_simple("fsl-gianfar_mdio", res.start, &res, 1);
 		if (IS_ERR(mdio_dev)) {
 			ret = PTR_ERR(mdio_dev);
 			goto mdio_err;
 		}

 		for (k = 0; k < 32; k++)
 			mdio_data.irq[k] = -1;

 		while ((child = of_get_next_child(np, child)) != NULL) {
 			if (child->n_intrs) {
 				u32 *id = (u32 *) get_property(child, "reg", NULL);
 				mdio_data.irq[*id] = child->intrs[0].line;
 			}
 		}

 		ret = platform_device_add_data(mdio_dev, &mdio_data, sizeof(struct gianfar_mdio_data));
 		if (ret)
 			goto mdio_unreg;
 	}

 	for (np = NULL, i = 0; (np = of_find_compatible_node(np, "network", "gianfar")) != NULL; i++) {
 		struct resource r[4];
 		struct device_node *phy, *mdio;
 		struct gianfar_platform_data gfar_data;
 		unsigned int *id;
 		char *model;
 		void *mac_addr;
 		phandle *ph;

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

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

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

 		model = get_property(np, "model", NULL);

 		/* If we aren't the FEC we have multiple interrupts */
 		if (model && strcasecmp(model, "FEC")) {
 			r[1].name = gfar_tx_intr;

 			r[2].name = gfar_rx_intr;
 			r[2].start = np->intrs[1].line;
 			r[2].end = np->intrs[1].line;
 			r[2].flags = IORESOURCE_IRQ;

 			r[3].name = gfar_err_intr;
 			r[3].start = np->intrs[2].line;
 			r[3].end = np->intrs[2].line;
 			r[3].flags = IORESOURCE_IRQ;
 		}

 		gfar_dev = platform_device_register_simple("fsl-gianfar", i, &r[0], np->n_intrs + 1);

 		if (IS_ERR(gfar_dev)) {
 			ret = PTR_ERR(gfar_dev);
 			goto gfar_err;
 		}

 		mac_addr = get_property(np, "address", NULL);
 		memcpy(gfar_data.mac_addr, mac_addr, 6);

 		if (model && !strcasecmp(model, "TSEC"))
 			gfar_data.device_flags =
 				FSL_GIANFAR_DEV_HAS_GIGABIT |
 				FSL_GIANFAR_DEV_HAS_COALESCE |
 				FSL_GIANFAR_DEV_HAS_RMON |
 				FSL_GIANFAR_DEV_HAS_MULTI_INTR;
 		if (model && !strcasecmp(model, "eTSEC"))
 			gfar_data.device_flags =
 				FSL_GIANFAR_DEV_HAS_GIGABIT |
 				FSL_GIANFAR_DEV_HAS_COALESCE |
 				FSL_GIANFAR_DEV_HAS_RMON |
 				FSL_GIANFAR_DEV_HAS_MULTI_INTR |
 				FSL_GIANFAR_DEV_HAS_CSUM |
 				FSL_GIANFAR_DEV_HAS_VLAN |
 				FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;

 		ph = (phandle *) get_property(np, "phy-handle", NULL);
 		phy = of_find_node_by_phandle(*ph);

 		if (phy == NULL) {
 			ret = -ENODEV;
 			goto gfar_unreg;
 		}

 		mdio = of_get_parent(phy);

 		id = (u32 *) get_property(phy, "reg", NULL);
 		ret = of_address_to_resource(mdio, 0, &res);
 		if (ret) {
 			of_node_put(phy);
 			of_node_put(mdio);
 			goto gfar_unreg;
 		}

 		gfar_data.phy_id = *id;
 		gfar_data.bus_id = res.start;

 		of_node_put(phy);
 		of_node_put(mdio);

 		ret = platform_device_add_data(gfar_dev, &gfar_data, sizeof(struct gianfar_platform_data));
 		if (ret)
 			goto gfar_unreg;
 	}

 	return 0;

 mdio_unreg:
 	platform_device_unregister(mdio_dev);
 mdio_err:
 	return ret;

 gfar_unreg:
 	platform_device_unregister(gfar_dev);
 gfar_err:
 	return ret;
 }
 arch_initcall(gfar_of_init);

 static int __init fsl_i2c_of_init(void)
 {
 	struct device_node *np;
 	unsigned int i;
 	struct platform_device *i2c_dev;
 	int ret;

 	for (np = NULL, i = 0; (np = of_find_compatible_node(np, "i2c", "fsl-i2c")) != NULL; i++) {
 		struct resource r[2];
 		struct fsl_i2c_platform_data i2c_data;
 		unsigned char * flags = NULL;

 		memset(&r, 0, sizeof(r));
 		memset(&i2c_data, 0, sizeof(i2c_data));

 		ret = of_address_to_resource(np, 0, &r[0]);
 		if (ret)
 			goto i2c_err;

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

 		i2c_dev = platform_device_register_simple("fsl-i2c", i, r, 2);
 		if (IS_ERR(i2c_dev)) {
 			ret = PTR_ERR(i2c_dev);
 			goto i2c_err;
 		}

 		i2c_data.device_flags = 0;
 		flags = get_property(np, "dfsrr", NULL);
 		if (flags)
 			i2c_data.device_flags |= FSL_I2C_DEV_SEPARATE_DFSRR;

 		flags = get_property(np, "fsl5200-clocking", NULL);
 		if (flags)
 			i2c_data.device_flags |= FSL_I2C_DEV_CLOCK_5200;

 		ret = platform_device_add_data(i2c_dev, &i2c_data, sizeof(struct fsl_i2c_platform_data));
 		if (ret)
 			goto i2c_unreg;
 	}

 	return 0;

 i2c_unreg:
 	platform_device_unregister(i2c_dev);
 i2c_err:
 	return ret;
 }
 arch_initcall(fsl_i2c_of_init);

 #ifdef CONFIG_PPC_83xx
 static int __init mpc83xx_wdt_init(void)
 {
 	struct resource r;
 	struct device_node *soc, *np;
 	struct platform_device *dev;
 	unsigned int *freq;
 	int ret;

 	np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");

 	if (!np) {
 		ret = -ENODEV;
 		goto mpc83xx_wdt_nodev;
 	}

 	soc = of_find_node_by_type(NULL, "soc");

 	if (!soc) {
 		ret = -ENODEV;
 		goto mpc83xx_wdt_nosoc;
 	}

 	freq = (unsigned int *)get_property(soc, "bus-frequency", NULL);
 	if (!freq) {
 		ret = -ENODEV;
 		goto mpc83xx_wdt_err;
 	}

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

 	ret = of_address_to_resource(np, 0, &r);
 	if (ret)
 		goto mpc83xx_wdt_err;

 	dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1);
 	if (IS_ERR(dev)) {
 		ret = PTR_ERR(dev);
 		goto mpc83xx_wdt_err;
 	}

 	ret = platform_device_add_data(dev, freq, sizeof(int));
 	if (ret)
 		goto mpc83xx_wdt_unreg;

 	of_node_put(soc);
 	of_node_put(np);

 	return 0;

 mpc83xx_wdt_unreg:
 	platform_device_unregister(dev);
 mpc83xx_wdt_err:
 	of_node_put(soc);
 mpc83xx_wdt_nosoc:
 	of_node_put(np);
 mpc83xx_wdt_nodev:
 	return ret;
 }
 arch_initcall(mpc83xx_wdt_init);
 #endif
	/*
	* FSL SoC setup code
	*
	* Maintained by Kumar Gala (see MAINTAINERS for contact information)
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License as published by the
	* Free Software Foundation; either version 2 of the License, or (at your
	* option) any later version.
	*/

	#include <linux/config.h>
	#include <linux/stddef.h>
	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/errno.h>
	#include <linux/major.h>
	#include <linux/delay.h>
	#include <linux/irq.h>
	#include <linux/module.h>
	#include <linux/device.h>
	#include <linux/platform_device.h>
	#include <linux/fsl_devices.h>

	#include <asm/system.h>
	#include <asm/atomic.h>
	#include <asm/io.h>
	#include <asm/irq.h>
	#include <asm/prom.h>
	#include <sysdev/fsl_soc.h>
	#include <mm/mmu_decl.h>

	static phys_addr_t immrbase = -1;

	phys_addr_t get_immrbase(void)
	{
	struct device_node *soc;

	if (immrbase != -1)
	return immrbase;

	soc = of_find_node_by_type(NULL, "soc");
	if (soc != 0) {
	unsigned int size;
	void *prop = get_property(soc, "reg", &size);
	immrbase = of_translate_address(soc, prop);
	of_node_put(soc);
	};

	return immrbase;
	}
	EXPORT_SYMBOL(get_immrbase);

	static const char * gfar_tx_intr = "tx";
	static const char * gfar_rx_intr = "rx";
	static const char * gfar_err_intr = "error";

	static int __init gfar_of_init(void)
	{
	struct device_node *np;
	unsigned int i;
	struct platform_device mdio_dev, gfar_dev;
	struct resource res;
	int ret;

	for (np = NULL, i = 0; (np = of_find_compatible_node(np, "mdio", "gianfar")) != NULL; i++) {
	int k;
	struct device_node *child = NULL;
	struct gianfar_mdio_data mdio_data;

	memset(&res, 0, sizeof(res));
	memset(&mdio_data, 0, sizeof(mdio_data));

	ret = of_address_to_resource(np, 0, &res);
	if (ret)
	goto mdio_err;

	mdio_dev = platform_device_register_simple("fsl-gianfar_mdio", res.start, &res, 1);
	if (IS_ERR(mdio_dev)) {
	ret = PTR_ERR(mdio_dev);
	goto mdio_err;
	}

	for (k = 0; k < 32; k++)
	mdio_data.irq[k] = -1;

	while ((child = of_get_next_child(np, child)) != NULL) {
	if (child->n_intrs) {
	u32 id = (u32 ) get_property(child, "reg", NULL);
	mdio_data.irq[*id] = child->intrs[0].line;
	}
	}

	ret = platform_device_add_data(mdio_dev, &mdio_data, sizeof(struct gianfar_mdio_data));
	if (ret)
	goto mdio_unreg;
	}

	for (np = NULL, i = 0; (np = of_find_compatible_node(np, "network", "gianfar")) != NULL; i++) {
	struct resource r[4];
	struct device_node phy, mdio;
	struct gianfar_platform_data gfar_data;
	unsigned int *id;
	char *model;
	void *mac_addr;
	phandle *ph;

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

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

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

	model = get_property(np, "model", NULL);

	/* If we aren't the FEC we have multiple interrupts */
	if (model && strcasecmp(model, "FEC")) {
	r[1].name = gfar_tx_intr;

	r[2].name = gfar_rx_intr;
	r[2].start = np->intrs[1].line;
	r[2].end = np->intrs[1].line;
	r[2].flags = IORESOURCE_IRQ;

	r[3].name = gfar_err_intr;
	r[3].start = np->intrs[2].line;
	r[3].end = np->intrs[2].line;
	r[3].flags = IORESOURCE_IRQ;
	}

	gfar_dev = platform_device_register_simple("fsl-gianfar", i, &r[0], np->n_intrs + 1);

	if (IS_ERR(gfar_dev)) {
	ret = PTR_ERR(gfar_dev);
	goto gfar_err;
	}

	mac_addr = get_property(np, "address", NULL);
	memcpy(gfar_data.mac_addr, mac_addr, 6);

	if (model && !strcasecmp(model, "TSEC"))
	gfar_data.device_flags =
	FSL_GIANFAR_DEV_HAS_GIGABIT \|
	FSL_GIANFAR_DEV_HAS_COALESCE \|
	FSL_GIANFAR_DEV_HAS_RMON \|
	FSL_GIANFAR_DEV_HAS_MULTI_INTR;
	if (model && !strcasecmp(model, "eTSEC"))
	gfar_data.device_flags =
	FSL_GIANFAR_DEV_HAS_GIGABIT \|
	FSL_GIANFAR_DEV_HAS_COALESCE \|
	FSL_GIANFAR_DEV_HAS_RMON \|
	FSL_GIANFAR_DEV_HAS_MULTI_INTR \|
	FSL_GIANFAR_DEV_HAS_CSUM \|
	FSL_GIANFAR_DEV_HAS_VLAN \|
	FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;

	ph = (phandle *) get_property(np, "phy-handle", NULL);
	phy = of_find_node_by_phandle(*ph);

	if (phy == NULL) {
	ret = -ENODEV;
	goto gfar_unreg;
	}

	mdio = of_get_parent(phy);

	id = (u32 *) get_property(phy, "reg", NULL);
	ret = of_address_to_resource(mdio, 0, &res);
	if (ret) {
	of_node_put(phy);
	of_node_put(mdio);
	goto gfar_unreg;
	}

	gfar_data.phy_id = *id;
	gfar_data.bus_id = res.start;

	of_node_put(phy);
	of_node_put(mdio);

	ret = platform_device_add_data(gfar_dev, &gfar_data, sizeof(struct gianfar_platform_data));
	if (ret)
	goto gfar_unreg;
	}

	return 0;

	mdio_unreg:
	platform_device_unregister(mdio_dev);
	mdio_err:
	return ret;

	gfar_unreg:
	platform_device_unregister(gfar_dev);
	gfar_err:
	return ret;
	}
	arch_initcall(gfar_of_init);

	static int __init fsl_i2c_of_init(void)
	{
	struct device_node *np;
	unsigned int i;
	struct platform_device *i2c_dev;
	int ret;

	for (np = NULL, i = 0; (np = of_find_compatible_node(np, "i2c", "fsl-i2c")) != NULL; i++) {
	struct resource r[2];
	struct fsl_i2c_platform_data i2c_data;
	unsigned char * flags = NULL;

	memset(&r, 0, sizeof(r));
	memset(&i2c_data, 0, sizeof(i2c_data));

	ret = of_address_to_resource(np, 0, &r[0]);
	if (ret)
	goto i2c_err;

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

	i2c_dev = platform_device_register_simple("fsl-i2c", i, r, 2);
	if (IS_ERR(i2c_dev)) {
	ret = PTR_ERR(i2c_dev);
	goto i2c_err;
	}

	i2c_data.device_flags = 0;
	flags = get_property(np, "dfsrr", NULL);
	if (flags)
	i2c_data.device_flags \|= FSL_I2C_DEV_SEPARATE_DFSRR;

	flags = get_property(np, "fsl5200-clocking", NULL);
	if (flags)
	i2c_data.device_flags \|= FSL_I2C_DEV_CLOCK_5200;

	ret = platform_device_add_data(i2c_dev, &i2c_data, sizeof(struct fsl_i2c_platform_data));
	if (ret)
	goto i2c_unreg;
	}

	return 0;

	i2c_unreg:
	platform_device_unregister(i2c_dev);
	i2c_err:
	return ret;
	}
	arch_initcall(fsl_i2c_of_init);

	#ifdef CONFIG_PPC_83xx
	static int __init mpc83xx_wdt_init(void)
	{
	struct resource r;
	struct device_node soc, np;
	struct platform_device *dev;
	unsigned int *freq;
	int ret;

	np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");

	if (!np) {
	ret = -ENODEV;
	goto mpc83xx_wdt_nodev;
	}

	soc = of_find_node_by_type(NULL, "soc");

	if (!soc) {
	ret = -ENODEV;
	goto mpc83xx_wdt_nosoc;
	}

	freq = (unsigned int *)get_property(soc, "bus-frequency", NULL);
	if (!freq) {
	ret = -ENODEV;
	goto mpc83xx_wdt_err;
	}

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

	ret = of_address_to_resource(np, 0, &r);
	if (ret)
	goto mpc83xx_wdt_err;

	dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1);
	if (IS_ERR(dev)) {
	ret = PTR_ERR(dev);
	goto mpc83xx_wdt_err;
	}

	ret = platform_device_add_data(dev, freq, sizeof(int));
	if (ret)
	goto mpc83xx_wdt_unreg;

	of_node_put(soc);
	of_node_put(np);

	return 0;

	mpc83xx_wdt_unreg:
	platform_device_unregister(dev);
	mpc83xx_wdt_err:
	of_node_put(soc);
	mpc83xx_wdt_nosoc:
	of_node_put(np);
	mpc83xx_wdt_nodev:
	return ret;
	}
	arch_initcall(mpc83xx_wdt_init);
	#endif