[PATCH] powerpc: Add FSL SOC library and setup code (eed32001) · Commits · 戴 / test

arch/powerpc/sysdev/Makefile

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Original line number	Diff line number	Diff line
		@@ -7,3 +7,4 @@ obj-$(CONFIG_40x) += dcr.o
		obj-$(CONFIG_U3_DART) += dart_iommu.o
		obj-$(CONFIG_MMIO_NVRAM) += mmio_nvram.o
		obj-$(CONFIG_PPC_83xx) += ipic.o
		obj-$(CONFIG_FSL_SOC) += fsl_soc.o

arch/powerpc/sysdev/fsl_soc.c

0 → 100644

+317 −0

Original line number	Diff line number	Diff line
		/*
		* 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

arch/powerpc/sysdev/fsl_soc.h

0 → 100644

+8 −0

Original line number	Diff line number	Diff line
		#ifndef __PPC_FSL_SOC_H
		#define __PPC_FSL_SOC_H
		#ifdef __KERNEL__

		extern phys_addr_t get_immrbase(void);

		#endif
		#endif

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