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POWERPC: Add cpm2 stuff support to the fsl_soc.c
This patch contains necessary modifications to support the CPM2 SoC peripherals. For the time being, those are fs_enet Ethernet driver and cpm_uart serial. Written initially to support mpc8560, it also suites to the part of the large PQ2 (more specifically, mpc8260) family. Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
This commit is contained in:
Vitaly Bordug
parent
7dcd86e143
commit
fba4366536
2 changed files with 265 additions and 5 deletions
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@ -3,6 +3,9 @@
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*
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* Maintained by Kumar Gala (see MAINTAINERS for contact information)
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*
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* 2006 (c) MontaVista Software, Inc.
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* Vitaly Bordug <vbordug@ru.mvista.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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@ -20,14 +23,18 @@
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/fsl_devices.h>
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#include <linux/fs_enet_pd.h>
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#include <linux/fs_uart_pd.h>
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#include <asm/system.h>
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#include <asm/atomic.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/time.h>
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#include <asm/prom.h>
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#include <sysdev/fsl_soc.h>
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#include <mm/mmu_decl.h>
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#include <asm/cpm2.h>
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static phys_addr_t immrbase = -1;
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@ -42,7 +49,9 @@ phys_addr_t get_immrbase(void)
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if (soc) {
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unsigned int size;
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const void *prop = get_property(soc, "reg", &size);
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immrbase = of_translate_address(soc, prop);
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if (prop)
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immrbase = of_translate_address(soc, prop);
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of_node_put(soc);
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};
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@ -51,6 +60,59 @@ phys_addr_t get_immrbase(void)
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EXPORT_SYMBOL(get_immrbase);
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#ifdef CONFIG_CPM2
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static u32 brgfreq = -1;
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u32 get_brgfreq(void)
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{
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struct device_node *node;
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if (brgfreq != -1)
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return brgfreq;
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node = of_find_node_by_type(NULL, "cpm");
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if (node) {
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unsigned int size;
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const unsigned int *prop = get_property(node, "brg-frequency",
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&size);
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if (prop)
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brgfreq = *prop;
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of_node_put(node);
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};
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return brgfreq;
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}
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EXPORT_SYMBOL(get_brgfreq);
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static u32 fs_baudrate = -1;
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u32 get_baudrate(void)
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{
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struct device_node *node;
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if (fs_baudrate != -1)
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return fs_baudrate;
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node = of_find_node_by_type(NULL, "serial");
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if (node) {
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unsigned int size;
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const unsigned int *prop = get_property(node, "current-speed",
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&size);
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if (prop)
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fs_baudrate = *prop;
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of_node_put(node);
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};
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return fs_baudrate;
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}
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EXPORT_SYMBOL(get_baudrate);
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#endif /* CONFIG_CPM2 */
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static int __init gfar_mdio_of_init(void)
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{
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struct device_node *np;
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@ -85,8 +147,11 @@ static int __init gfar_mdio_of_init(void)
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mdio_data.irq[k] = -1;
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while ((child = of_get_next_child(np, child)) != NULL) {
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const u32 *id = get_property(child, "reg", NULL);
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mdio_data.irq[*id] = irq_of_parse_and_map(child, 0);
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int irq = irq_of_parse_and_map(child, 0);
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if (irq != NO_IRQ) {
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const u32 *id = get_property(child, "reg", NULL);
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mdio_data.irq[*id] = irq;
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}
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}
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ret =
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@ -128,7 +193,7 @@ static int __init gfar_of_init(void)
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const char *model;
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const void *mac_addr;
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const phandle *ph;
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int n_res = 1;
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int n_res = 2;
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memset(r, 0, sizeof(r));
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memset(&gfar_data, 0, sizeof(gfar_data));
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@ -159,7 +224,7 @@ static int __init gfar_of_init(void)
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gfar_dev =
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platform_device_register_simple("fsl-gianfar", i, &r[0],
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n_res + 1);
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n_res);
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if (IS_ERR(gfar_dev)) {
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ret = PTR_ERR(gfar_dev);
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@ -478,3 +543,196 @@ static int __init fsl_usb_of_init(void)
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}
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arch_initcall(fsl_usb_of_init);
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#ifdef CONFIG_CPM2
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static const char fcc_regs[] = "fcc_regs";
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static const char fcc_regs_c[] = "fcc_regs_c";
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static const char fcc_pram[] = "fcc_pram";
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static char bus_id[9][BUS_ID_SIZE];
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static int __init fs_enet_of_init(void)
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{
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struct device_node *np;
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unsigned int i;
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struct platform_device *fs_enet_dev;
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struct resource res;
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int ret;
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for (np = NULL, i = 0;
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(np = of_find_compatible_node(np, "network", "fs_enet")) != NULL;
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i++) {
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struct resource r[4];
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struct device_node *phy, *mdio;
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struct fs_platform_info fs_enet_data;
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const unsigned int *id, *phy_addr;
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const void *mac_addr;
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const phandle *ph;
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const char *model;
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memset(r, 0, sizeof(r));
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memset(&fs_enet_data, 0, sizeof(fs_enet_data));
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ret = of_address_to_resource(np, 0, &r[0]);
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if (ret)
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goto err;
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r[0].name = fcc_regs;
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ret = of_address_to_resource(np, 1, &r[1]);
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if (ret)
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goto err;
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r[1].name = fcc_pram;
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ret = of_address_to_resource(np, 2, &r[2]);
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if (ret)
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goto err;
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r[2].name = fcc_regs_c;
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r[3].start = r[3].end = irq_of_parse_and_map(np, 0);
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r[3].flags = IORESOURCE_IRQ;
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fs_enet_dev =
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platform_device_register_simple("fsl-cpm-fcc", i, &r[0], 4);
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if (IS_ERR(fs_enet_dev)) {
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ret = PTR_ERR(fs_enet_dev);
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goto err;
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}
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model = get_property(np, "model", NULL);
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if (model == NULL) {
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ret = -ENODEV;
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goto unreg;
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}
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mac_addr = get_property(np, "mac-address", NULL);
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memcpy(fs_enet_data.macaddr, mac_addr, 6);
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ph = get_property(np, "phy-handle", NULL);
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phy = of_find_node_by_phandle(*ph);
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if (phy == NULL) {
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ret = -ENODEV;
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goto unreg;
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}
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phy_addr = get_property(phy, "reg", NULL);
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fs_enet_data.phy_addr = *phy_addr;
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id = get_property(np, "device-id", NULL);
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fs_enet_data.fs_no = *id;
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mdio = of_get_parent(phy);
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ret = of_address_to_resource(mdio, 0, &res);
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if (ret) {
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of_node_put(phy);
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of_node_put(mdio);
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goto unreg;
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}
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if (strstr(model, "FCC")) {
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int fcc_index = fs_get_fcc_index(*id);
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fs_enet_data.dpram_offset = (u32)cpm2_immr->im_dprambase;
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fs_enet_data.rx_ring = 32;
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fs_enet_data.tx_ring = 32;
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fs_enet_data.rx_copybreak = 240;
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fs_enet_data.use_napi = 0;
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fs_enet_data.napi_weight = 17;
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fs_enet_data.mem_offset = FCC_MEM_OFFSET(fcc_index);
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fs_enet_data.cp_page = CPM_CR_FCC_PAGE(fcc_index);
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fs_enet_data.cp_block = CPM_CR_FCC_SBLOCK(fcc_index);
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snprintf((char*)&bus_id[(*id)], BUS_ID_SIZE, "%x:%02x",
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(u32)res.start, fs_enet_data.phy_addr);
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fs_enet_data.bus_id = (char*)&bus_id[(*id)];
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}
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of_node_put(phy);
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of_node_put(mdio);
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ret = platform_device_add_data(fs_enet_dev, &fs_enet_data,
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sizeof(struct
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fs_platform_info));
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if (ret)
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goto unreg;
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}
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return 0;
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unreg:
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platform_device_unregister(fs_enet_dev);
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err:
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return ret;
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}
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arch_initcall(fs_enet_of_init);
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static const char scc_regs[] = "regs";
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static const char scc_pram[] = "pram";
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static int __init cpm_uart_of_init(void)
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{
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struct device_node *np;
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unsigned int i;
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struct platform_device *cpm_uart_dev;
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int ret;
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for (np = NULL, i = 0;
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(np = of_find_compatible_node(np, "serial", "cpm_uart")) != NULL;
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i++) {
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struct resource r[3];
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struct fs_uart_platform_info cpm_uart_data;
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const int *id;
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memset(r, 0, sizeof(r));
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memset(&cpm_uart_data, 0, sizeof(cpm_uart_data));
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ret = of_address_to_resource(np, 0, &r[0]);
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if (ret)
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goto err;
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r[0].name = scc_regs;
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ret = of_address_to_resource(np, 1, &r[1]);
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if (ret)
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goto err;
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r[1].name = scc_pram;
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r[2].start = r[2].end = irq_of_parse_and_map(np, 0);
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r[2].flags = IORESOURCE_IRQ;
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cpm_uart_dev =
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platform_device_register_simple("fsl-cpm-scc:uart", i, &r[0], 3);
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if (IS_ERR(cpm_uart_dev)) {
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ret = PTR_ERR(cpm_uart_dev);
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goto err;
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}
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id = get_property(np, "device-id", NULL);
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cpm_uart_data.fs_no = *id;
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cpm_uart_data.uart_clk = ppc_proc_freq;
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cpm_uart_data.tx_num_fifo = 4;
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cpm_uart_data.tx_buf_size = 32;
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cpm_uart_data.rx_num_fifo = 4;
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cpm_uart_data.rx_buf_size = 32;
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ret =
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platform_device_add_data(cpm_uart_dev, &cpm_uart_data,
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sizeof(struct
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fs_uart_platform_info));
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if (ret)
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goto unreg;
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}
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return 0;
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unreg:
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platform_device_unregister(cpm_uart_dev);
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err:
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return ret;
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}
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arch_initcall(cpm_uart_of_init);
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#endif /* CONFIG_CPM2 */
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@ -3,6 +3,8 @@
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#ifdef __KERNEL__
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extern phys_addr_t get_immrbase(void);
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extern u32 get_brgfreq(void);
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extern u32 get_baudrate(void);
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#endif
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#endif
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