--- /dev/null
+/*
+ * GPIO support for RDC SoC R3210/R8610
+ *
+ * Copyright (C) 2007, Florian Fainelli <florian@openwrt.org>
+ * Copyright (C) 2008, Volker Weiss <dev@tintuc.de>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/types.h>
+#include <linux/module.h>
+
+#include <asm/mach-rdc321x/gpio.h>
+#include <asm/mach-rdc321x/rdc321x_defs.h>
+
+
+/* spin lock to protect our private copy of GPIO data register plus
+ the access to PCI conf registers. */
+static DEFINE_SPINLOCK(gpio_lock);
+
+/* copy of GPIO data registers */
+static u32 gpio_data_reg1;
+static u32 gpio_data_reg2;
+
+static u32 gpio_request_data[2];
+
+
+static inline void rdc321x_conf_write(unsigned addr, u32 value)
+{
+ outl((1 << 31) | (7 << 11) | addr, RDC3210_CFGREG_ADDR);
+ outl(value, RDC3210_CFGREG_DATA);
+}
+
+static inline void rdc321x_conf_or(unsigned addr, u32 value)
+{
+ outl((1 << 31) | (7 << 11) | addr, RDC3210_CFGREG_ADDR);
+ value |= inl(RDC3210_CFGREG_DATA);
+ outl(value, RDC3210_CFGREG_DATA);
+}
+
+static inline u32 rdc321x_conf_read(unsigned addr)
+{
+ outl((1 << 31) | (7 << 11) | addr, RDC3210_CFGREG_ADDR);
+
+ return inl(RDC3210_CFGREG_DATA);
+}
+
+/* configure pin as GPIO */
+static void rdc321x_configure_gpio(unsigned gpio)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&gpio_lock, flags);
+ rdc321x_conf_or(gpio < 32
+ ? RDC321X_GPIO_CTRL_REG1 : RDC321X_GPIO_CTRL_REG2,
+ 1 << (gpio & 0x1f));
+ spin_unlock_irqrestore(&gpio_lock, flags);
+}
+
+/* initially setup the 2 copies of the gpio data registers.
+ This function is called before the platform setup code. */
+static int __init rdc321x_gpio_setup(void)
+{
+ /* this might not be, what others (BIOS, bootloader, etc.)
+ wrote to these registers before, but it's a good guess. Still
+ better than just using 0xffffffff. */
+
+ gpio_data_reg1 = rdc321x_conf_read(RDC321X_GPIO_DATA_REG1);
+ gpio_data_reg2 = rdc321x_conf_read(RDC321X_GPIO_DATA_REG2);
+
+ return 0;
+}
+
+/* determine, if gpio number is valid */
+static inline int rdc321x_is_gpio(unsigned gpio)
+{
+ return gpio <= RDC321X_MAX_GPIO;
+}
+
+/* request GPIO */
+int rdc_gpio_request(unsigned gpio, const char *label)
+{
+ unsigned long flags;
+
+ if (!rdc321x_is_gpio(gpio))
+ return -EINVAL;
+
+ spin_lock_irqsave(&gpio_lock, flags);
+ if (gpio_request_data[(gpio & 0x20) ? 1 : 0] & (1 << (gpio & 0x1f)))
+ goto inuse;
+ gpio_request_data[(gpio & 0x20) ? 1 : 0] |= (1 << (gpio & 0x1f));
+ spin_unlock_irqrestore(&gpio_lock, flags);
+
+ return 0;
+inuse:
+ spin_unlock_irqrestore(&gpio_lock, flags);
+ return -EINVAL;
+}
+EXPORT_SYMBOL(rdc_gpio_request);
+
+/* release previously-claimed GPIO */
+void rdc_gpio_free(unsigned gpio)
+{
+ unsigned long flags;
+
+ if (!rdc321x_is_gpio(gpio))
+ return;
+
+ spin_lock_irqsave(&gpio_lock, flags);
+ gpio_request_data[(gpio & 0x20) ? 1 : 0] &= ~(1 << (gpio & 0x1f));
+ spin_unlock_irqrestore(&gpio_lock, flags);
+}
+EXPORT_SYMBOL(rdc_gpio_free);
+
+/* read GPIO pin */
+int rdc_gpio_get_value(unsigned gpio)
+{
+ u32 reg;
+ unsigned long flags;
+
+ spin_lock_irqsave(&gpio_lock, flags);
+ reg = rdc321x_conf_read(gpio < 32
+ ? RDC321X_GPIO_DATA_REG1 : RDC321X_GPIO_DATA_REG2);
+ spin_unlock_irqrestore(&gpio_lock, flags);
+
+ return (1 << (gpio & 0x1f)) & reg ? 1 : 0;
+}
+EXPORT_SYMBOL(rdc_gpio_get_value);
+
+/* set GPIO pin to value */
+void rdc_gpio_set_value(unsigned gpio, int value)
+{
+ unsigned long flags;
+ u32 reg;
+
+ reg = 1 << (gpio & 0x1f);
+ if (gpio < 32) {
+ spin_lock_irqsave(&gpio_lock, flags);
+ if (value)
+ gpio_data_reg1 |= reg;
+ else
+ gpio_data_reg1 &= ~reg;
+ rdc321x_conf_write(RDC321X_GPIO_DATA_REG1, gpio_data_reg1);
+ spin_unlock_irqrestore(&gpio_lock, flags);
+ } else {
+ spin_lock_irqsave(&gpio_lock, flags);
+ if (value)
+ gpio_data_reg2 |= reg;
+ else
+ gpio_data_reg2 &= ~reg;
+ rdc321x_conf_write(RDC321X_GPIO_DATA_REG2, gpio_data_reg2);
+ spin_unlock_irqrestore(&gpio_lock, flags);
+ }
+}
+EXPORT_SYMBOL(rdc_gpio_set_value);
+
+/* configure GPIO pin as input */
+int rdc_gpio_direction_input(unsigned gpio)
+{
+ if (!rdc321x_is_gpio(gpio))
+ return -EINVAL;
+
+ rdc321x_configure_gpio(gpio);
+
+ return 0;
+}
+EXPORT_SYMBOL(rdc_gpio_direction_input);
+
+/* configure GPIO pin as output and set value */
+int rdc_gpio_direction_output(unsigned gpio, int value)
+{
+ if (!rdc321x_is_gpio(gpio))
+ return -EINVAL;
+
+ gpio_set_value(gpio, value);
+ rdc321x_configure_gpio(gpio);
+
+ return 0;
+}
+EXPORT_SYMBOL(rdc_gpio_direction_output);
+
+arch_initcall(rdc321x_gpio_setup);
--- /dev/null
+/*
+ * Generic RDC321x platform devices
+ *
+ * Copyright (C) 2007-2008 OpenWrt.org
+ * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
+ * Copyright (C) 2008 Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/version.h>
+#include <linux/leds.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/physmap.h>
+#include <linux/root_dev.h>
+
+#include <asm/mach-rdc321x/gpio.h>
+
+/* Flash */
+#ifdef CONFIG_MTD_R8610
+#define CONFIG_MTD_RDC3210 1
+#elif defined CONFIG_MTD_RDC3210
+static struct resource rdc_flash_resource[] = {
+ [0] = {
+ .start = (u32)-CONFIG_MTD_RDC3210_SIZE,
+ .end = (u32)-1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device rdc_flash_device = {
+ .name = "rdc321x-flash",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(rdc_flash_resource),
+ .resource = rdc_flash_resource,
+};
+#else
+static struct mtd_partition rdc_flash_parts[15];
+
+static struct resource rdc_flash_resource = {
+ .end = (u32)-1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct physmap_flash_data rdc_flash_data = {
+ .parts = rdc_flash_parts,
+};
+
+static struct platform_device rdc_flash_device = {
+ .name = "physmap-flash",
+ .id = -1,
+ .resource = &rdc_flash_resource,
+ .num_resources = 1,
+ .dev.platform_data = &rdc_flash_data,
+};
+#endif
+
+/* LEDS */
+static struct gpio_led default_leds[] = {
+ { .name = "rdc321x:dmz", .gpio = 1, },
+};
+
+static struct gpio_led_platform_data rdc321x_led_data = {
+ .num_leds = ARRAY_SIZE(default_leds),
+ .leds = default_leds,
+};
+
+static struct platform_device rdc321x_leds = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev = {
+ .platform_data = &rdc321x_led_data,
+ }
+};
+
+/* Watchdog */
+static struct platform_device rdc321x_wdt = {
+ .name = "rdc321x-wdt",
+ .id = -1,
+ .num_resources = 0,
+};
+
+/* Button */
+static struct gpio_keys_button rdc321x_gpio_btn[] = {
+ {
+ .gpio = 0,
+ .code = BTN_0,
+ .desc = "Reset",
+ .active_low = 1,
+ }
+};
+
+static struct gpio_keys_platform_data rdc321x_gpio_btn_data = {
+ .buttons = rdc321x_gpio_btn,
+ .nbuttons = ARRAY_SIZE(rdc321x_gpio_btn),
+};
+
+static struct platform_device rdc321x_button = {
+ .name = "gpio-keys",
+ .id = -1,
+ .dev = {
+ .platform_data = &rdc321x_gpio_btn_data,
+ }
+};
+
+static struct platform_device *rdc321x_devs[] = {
+ &rdc_flash_device,
+ &rdc321x_leds,
+ &rdc321x_wdt,
+ &rdc321x_button,
+};
+
+static int probe_flash_start(struct map_info *the_map)
+{
+ struct mtd_info *res;
+
+ the_map->virt = ioremap(the_map->phys, the_map->size);
+ if (the_map->virt == NULL)
+ return 1;
+ for (the_map->bankwidth = 32; the_map->bankwidth; the_map->bankwidth
+ >>= 1) {
+ res = do_map_probe("cfi_probe", the_map);
+ if (res == NULL)
+ res = do_map_probe("jedec_probe", the_map);
+ if (res != NULL)
+ break;
+ }
+ iounmap(the_map->virt);
+ if (res != NULL)
+ the_map->phys = (u32)-(s32)(the_map->size = res->size);
+ return res == NULL;
+}
+
+static int __init rdc_board_setup(void)
+{
+#ifndef CONFIG_MTD_RDC3210
+ struct map_info rdc_map_info;
+ u32 the_header[4];
+
+ ROOT_DEV = 0;
+ rdc_map_info.name = rdc_flash_device.name;
+ rdc_map_info.phys = 0xff000000;
+ rdc_map_info.size = 0x1000000;
+ rdc_map_info.bankwidth = 2;
+ rdc_map_info.set_vpp = NULL;
+ simple_map_init(&rdc_map_info);
+ while (probe_flash_start(&rdc_map_info)) {
+ rdc_map_info.phys++;
+ if (--rdc_map_info.size)
+ panic("Could not find start of flash!");
+ }
+ rdc_flash_resource.start = rdc_map_info.phys;
+ rdc_flash_data.width = rdc_map_info.bankwidth;
+ rdc_map_info.virt = ioremap_nocache(rdc_map_info.phys, 0x10);
+ if (rdc_map_info.virt == NULL)
+ panic("Could not ioremap to read device magic!");
+ the_header[0] = ((u32 *)rdc_map_info.virt)[0];
+ the_header[1] = ((u32 *)rdc_map_info.virt)[1];
+ the_header[2] = ((u32 *)rdc_map_info.virt)[2];
+ the_header[3] = ((u32 *)rdc_map_info.virt)[3];
+ iounmap(rdc_map_info.virt);
+ if (!memcmp(the_header, "GMTK", 4)) { /* Gemtek */
+ /* TODO */
+ } else if (!memcmp(the_header, "CSYS", 4)) { /* Sitecom */
+ /* TODO */
+ } else if (!memcmp(((u8 *)the_header) + 14, "Li", 2)) { /* AMIT */
+ rdc_flash_parts[0].name = "kernel_parthdr";
+ rdc_flash_parts[0].offset = 0;
+ rdc_flash_parts[0].size = 0x10;
+ rdc_flash_parts[1].name = "kernel";
+ rdc_flash_parts[1].offset = 0x10;
+ rdc_flash_parts[1].size = 0xffff0;
+ rdc_flash_parts[2].name = "rootfs_parthdr";
+ rdc_flash_parts[2].offset = 0x100000;
+ rdc_flash_parts[2].size = 0x10;
+ rdc_flash_parts[3].name = "rootfs";
+ rdc_flash_parts[3].offset = 0x100010;
+ rdc_flash_parts[3].size = rdc_map_info.size - 0x160010;
+ rdc_flash_parts[4].name = "config_parthdr";
+ rdc_flash_parts[4].offset = rdc_map_info.size - 0x60000;
+ rdc_flash_parts[4].size = 0x10;
+ rdc_flash_parts[5].name = "config";
+ rdc_flash_parts[5].offset = rdc_map_info.size - 0x5fff0;
+ rdc_flash_parts[5].size = 0xfff0;
+ rdc_flash_parts[6].name = "recoveryfs_parthdr";
+ rdc_flash_parts[6].offset = rdc_map_info.size - 0x50000;
+ rdc_flash_parts[6].size = 0x10;
+ rdc_flash_parts[7].name = "recoveryfs";
+ rdc_flash_parts[7].offset = rdc_map_info.size - 0x4fff0;
+ rdc_flash_parts[7].size = 0x3fff0;
+ rdc_flash_parts[8].name = "recovery_parthdr";
+ rdc_flash_parts[8].offset = rdc_map_info.size - 0x10000;
+ rdc_flash_parts[8].size = 0x10;
+ rdc_flash_parts[9].name = "recovery";
+ rdc_flash_parts[9].offset = rdc_map_info.size - 0xfff0;
+ rdc_flash_parts[9].size = 0x7ff0;
+ rdc_flash_parts[10].name = "productinfo_parthdr";
+ rdc_flash_parts[10].offset = rdc_map_info.size - 0x8000;
+ rdc_flash_parts[10].size = 0x10;
+ rdc_flash_parts[11].name = "productinfo";
+ rdc_flash_parts[11].offset = rdc_map_info.size - 0x7ff0;
+ rdc_flash_parts[11].size = 0x1ff0;
+ rdc_flash_parts[12].name = "bootloader_parthdr";
+ rdc_flash_parts[12].offset = rdc_map_info.size - 0x6000;
+ rdc_flash_parts[12].size = 0x10;
+ rdc_flash_parts[13].name = "bootloader";
+ rdc_flash_parts[13].offset = rdc_map_info.size - 0x5ff0;
+ rdc_flash_parts[13].size = 0x5ff0;
+ rdc_flash_parts[14].name = "everything";
+ rdc_flash_parts[14].offset = 0;
+ rdc_flash_parts[14].size = rdc_map_info.size;
+ rdc_flash_data.nr_parts = 15;
+ } else { /* ZyXEL */
+ rdc_flash_parts[0].name = "kernel";
+ rdc_flash_parts[0].offset = 0;
+ rdc_flash_parts[0].size = 0x100000;
+ rdc_flash_parts[1].name = "rootfs";
+ rdc_flash_parts[1].offset = 0x100000;
+ rdc_flash_parts[1].size = rdc_map_info.size - 0x140000;
+ rdc_flash_parts[2].name = "linux";
+ rdc_flash_parts[2].offset = 0;
+ rdc_flash_parts[2].size = rdc_map_info.size - 0x40000;
+ rdc_flash_parts[3].name = "config";
+ rdc_flash_parts[3].offset = rdc_map_info.size - 0x40000;
+ rdc_flash_parts[3].size = 0x10000;
+ rdc_flash_parts[4].name = "productinfo";
+ rdc_flash_parts[4].offset = rdc_map_info.size - 0x30000;
+ rdc_flash_parts[4].size = 0x10000;
+ rdc_flash_parts[5].name = "bootloader";
+ rdc_flash_parts[5].offset = rdc_map_info.size - 0x20000;
+ rdc_flash_parts[5].size = 0x20000;
+ rdc_flash_data.nr_parts = 6;
+ }
+#endif
+ return platform_add_devices(rdc321x_devs, ARRAY_SIZE(rdc321x_devs));
+}
+
+#ifdef CONFIG_MTD_RDC3210
+arch_initcall(rdc_board_setup);
+#else
+late_initcall(rdc_board_setup);
+#endif
projects / openwrt / staging / lynxis.git / commitdiff