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wifipineapple-openwrt/target/linux/mpc83xx/patches-2.6.36/017-platforms_83xx_rbppc.patch

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--- /dev/null
+++ b/arch/powerpc/platforms/83xx/rbppc.c
@@ -0,0 +1,316 @@
+/*
+ * Copyright (C) 2008-2009 Noah Fontes <nfontes@transtruct.org>
+ * Copyright (C) 2009 Michael Guntsche <mike@it-loops.com>
+ * Copyright (C) Mikrotik 2007
+ *
+ * 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/delay.h>
+#include <linux/root_dev.h>
+#include <linux/initrd.h>
+#include <linux/interrupt.h>
+#include <linux/of_platform.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <asm/time.h>
+#include <asm/ipic.h>
+#include <asm/udbg.h>
+#include <asm/qe.h>
+#include <asm/qe_ic.h>
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+#include "mpc83xx.h"
+
+#define SYSCTL 0x100
+#define SICRL 0x014
+
+#define GTCFR2 0x04
+#define GTMDR4 0x22
+#define GTRFR4 0x26
+#define GTCNR4 0x2e
+#define GTVER4 0x36
+#define GTPSR4 0x3e
+
+#define GTCFR_BCM 0x40
+#define GTCFR_STP4 0x20
+#define GTCFR_RST4 0x10
+#define GTCFR_STP3 0x02
+#define GTCFR_RST3 0x01
+
+#define GTMDR_ORI 0x10
+#define GTMDR_FRR 0x08
+#define GTMDR_ICLK16 0x04
+
+extern int par_io_data_set(u8 port, u8 pin, u8 val);
+extern int par_io_config_pin(u8 port, u8 pin, int dir, int open_drain,
+ int assignment, int has_irq);
+
+static unsigned timer_freq;
+static void *gtm;
+
+static int beeper_irq;
+static unsigned beeper_gpio_pin[2];
+
+irqreturn_t rbppc_timer_irq(int irq, void *ptr)
+{
+ static int toggle = 0;
+
+ par_io_data_set(beeper_gpio_pin[0], beeper_gpio_pin[1], toggle);
+ toggle = !toggle;
+
+ /* ack interrupt */
+ out_be16(gtm + GTVER4, 3);
+
+ return IRQ_HANDLED;
+}
+
+void rbppc_beep(unsigned freq)
+{
+ unsigned gtmdr;
+
+ if (freq > 5000) freq = 5000;
+
+ if (!gtm)
+ return;
+ if (!freq) {
+ out_8(gtm + GTCFR2, GTCFR_STP4 | GTCFR_STP3);
+ return;
+ }
+
+ out_8(gtm + GTCFR2, GTCFR_RST4 | GTCFR_STP3);
+ out_be16(gtm + GTPSR4, 255);
+ gtmdr = GTMDR_FRR | GTMDR_ICLK16;
+ if (beeper_irq != NO_IRQ) gtmdr |= GTMDR_ORI;
+ out_be16(gtm + GTMDR4, gtmdr);
+ out_be16(gtm + GTVER4, 3);
+
+ out_be16(gtm + GTRFR4, timer_freq / 16 / 256 / freq / 2);
+ out_be16(gtm + GTCNR4, 0);
+}
+EXPORT_SYMBOL(rbppc_beep);
+
+static void __init rbppc_setup_arch(void)
+{
+ struct device_node *np;
+
+ np = of_find_node_by_type(NULL, "cpu");
+ if (np) {
+ const unsigned *fp = of_get_property(np, "clock-frequency", NULL);
+ loops_per_jiffy = fp ? *fp / HZ : 0;
+
+ of_node_put(np);
+ }
+
+ np = of_find_node_by_name(NULL, "serial");
+ if (np) {
+ timer_freq =
+ *(unsigned *) of_get_property(np, "clock-frequency", NULL);
+ of_node_put(np);
+ }
+
+#ifdef CONFIG_PCI
+ np = of_find_node_by_type(NULL, "pci");
+ if (np) {
+ mpc83xx_add_bridge(np);
+ }
+#endif
+
+#ifdef CONFIG_QUICC_ENGINE
+ np = of_find_node_by_name(np, "par_io");
+ if (np) {
+ qe_reset();
+ par_io_init(np);
+ of_node_put(np);
+
+ np = NULL;
+ while (1) {
+ np = of_find_node_by_name(np, "ucc");
+ if (!np) break;
+
+ par_io_of_config(np);
+ }
+ }
+#endif
+
+}
+
+void __init rbppc_init_IRQ(void)
+{
+ struct device_node *np;
+
+ np = of_find_node_by_type(NULL, "ipic");
+ if (np) {
+ ipic_init(np, 0);
+ ipic_set_default_priority();
+ of_node_put(np);
+ }
+
+#ifdef CONFIG_QUICC_ENGINE
+ np = of_find_node_by_type(NULL, "qeic");
+ if (np) {
+ qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
+ of_node_put(np);
+ }
+#endif
+}
+
+static int __init rbppc_probe(void)
+{
+ char *model;
+
+ model = of_get_flat_dt_prop(of_get_flat_dt_root(), "model", NULL);
+
+ if (!model)
+ return 0;
+
+ if (strcmp(model, "RB600") == 0)
+ return 1;
+
+ return 0;
+}
+
+static void __init rbppc_beeper_init(struct device_node *beeper)
+{
+ struct resource res;
+ struct device_node *gpio;
+ const unsigned *pin;
+ const unsigned *gpio_id;
+
+ if (of_address_to_resource(beeper, 0, &res)) {
+ printk(KERN_ERR "rbppc_beeper_init(%s): Beeper error: No region specified\n", beeper->full_name);
+ return;
+ }
+
+ pin = of_get_property(beeper, "gpio", NULL);
+ if (pin) {
+ gpio = of_find_node_by_phandle(pin[0]);
+
+ if (!gpio) {
+ printk(KERN_ERR "rbppc_beeper_init(%s): Beeper error: GPIO handle %x not found\n", beeper->full_name, pin[0]);
+ return;
+ }
+
+ gpio_id = of_get_property(gpio, "device-id", NULL);
+ if (!gpio_id) {
+ printk(KERN_ERR "rbppc_beeper_init(%s): Beeper error: No device-id specified in GPIO\n", beeper->full_name);
+ return;
+ }
+
+ beeper_gpio_pin[0] = *gpio_id;
+ beeper_gpio_pin[1] = pin[1];
+
+ par_io_config_pin(*gpio_id, pin[1], 1, 0, 0, 0);
+ } else {
+ void *sysctl;
+
+ sysctl = ioremap_nocache(get_immrbase() + SYSCTL, 0x100);
+ out_be32(sysctl + SICRL,
+ in_be32(sysctl + SICRL) | (1 << (31 - 19)));
+ iounmap(sysctl);
+ }
+
+ gtm = ioremap_nocache(res.start, res.end - res.start + 1);
+
+ beeper_irq = irq_of_parse_and_map(beeper, 0);
+ if (beeper_irq != NO_IRQ) {
+ int e = request_irq(beeper_irq, rbppc_timer_irq, 0, "beeper", NULL);
+ if (e) {
+ printk(KERN_ERR "rbppc_beeper_init(%s): Request of beeper irq failed!\n", beeper->full_name);
+ }
+ }
+}
+
+#define SBIT(x) (0x80000000 >> (x))
+#define DBIT(x, y) ((y) << (32 - (((x % 16) + 1) * 2)))
+
+#define SICRL_RB600(x) ((x) + (0x114 >> 2))
+#define GPIO_DIR_RB600(x) ((x) + (0xc00 >> 2))
+#define GPIO_DATA_RB600(x) ((x) + (0xc08 >> 2))
+
+static void rbppc_restart(char *cmd)
+{
+ __be32 __iomem *reg;
+
+ reg = ioremap(get_immrbase(), 0x1000);
+ local_irq_disable();
+ out_be32(SICRL_RB600(reg), in_be32(SICRL_RB600(reg)) & ~0x00800000);
+ out_be32(GPIO_DIR_RB600(reg), in_be32(GPIO_DIR_RB600(reg)) | SBIT(2));
+ out_be32(GPIO_DATA_RB600(reg), in_be32(GPIO_DATA_RB600(reg)) & ~SBIT(2));
+
+ while (1);
+}
+
+static void rbppc_halt(void)
+{
+ while (1);
+}
+
+static struct of_device_id rbppc_ids[] = {
+ { .type = "soc", },
+ { .compatible = "soc", },
+ { .compatible = "simple-bus", },
+ { .compatible = "gianfar", },
+ { },
+};
+
+static int __init rbppc_declare_of_platform_devices(void)
+{
+ struct device_node *np;
+ unsigned idx;
+
+ of_platform_bus_probe(NULL, rbppc_ids, NULL);
+
+ np = of_find_node_by_type(NULL, "mdio");
+ if (np) {
+ unsigned len;
+ unsigned *res;
+ const unsigned *eres;
+ struct device_node *ep;
+
+ ep = of_find_compatible_node(NULL, "network", "ucc_geth");
+ if (ep) {
+ eres = of_get_property(ep, "reg", &len);
+ res = (unsigned *) of_get_property(np, "reg", &len);
+ if (res && eres) {
+ res[0] = eres[0] + 0x120;
+ }
+ }
+ }
+
+ np = of_find_node_by_name(NULL, "nand");
+ if (np) {
+ of_platform_device_create(np, "nand", NULL);
+ }
+
+ idx = 0;
+ for_each_node_by_type(np, "rb,cf") {
+ char dev_name[12];
+ snprintf(dev_name, sizeof(dev_name), "cf.%u", idx);
+ of_platform_device_create(np, dev_name, NULL);
+ ++idx;
+ }
+
+ np = of_find_node_by_name(NULL, "beeper");
+ if (np) {
+ rbppc_beeper_init(np);
+ }
+
+ return 0;
+}
+device_initcall(rbppc_declare_of_platform_devices);
+
+define_machine(rb600) {
+ .name = "MikroTik RouterBOARD 600 series",
+ .probe = rbppc_probe,
+ .setup_arch = rbppc_setup_arch,
+ .init_IRQ = rbppc_init_IRQ,
+ .get_irq = ipic_get_irq,
+ .restart = rbppc_restart,
+ .halt = rbppc_halt,
+ .time_init = mpc83xx_time_init,
+ .calibrate_decr = generic_calibrate_decr,
+};
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