MIPS: Add support for Texas Instruments AR7 System-on-a-Chip
This patch adds support for the Texas Instruments AR7 System-on-a-Chip.
It supports the TNETD7100, 7200 and 7300 versions of the SoC.
Signed-off-by: Matteo Croce <matteo@openwrt.org>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Eugene Konev <ejka@openwrt.org>
Signed-off-by: Nicolas Thill <nico@openwrt.org>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/ar7/platform.c b/arch/mips/ar7/platform.c
new file mode 100644
index 0000000..5422449
--- /dev/null
+++ b/arch/mips/ar7/platform.c
@@ -0,0 +1,555 @@
+/*
+ * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org>
+ *
+ * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/version.h>
+#include <linux/vlynq.h>
+#include <linux/leds.h>
+#include <linux/string.h>
+#include <linux/etherdevice.h>
+
+#include <asm/addrspace.h>
+#include <asm/mach-ar7/ar7.h>
+#include <asm/mach-ar7/gpio.h>
+#include <asm/mach-ar7/prom.h>
+
+struct plat_vlynq_data {
+ struct plat_vlynq_ops ops;
+ int gpio_bit;
+ int reset_bit;
+};
+
+
+static int vlynq_on(struct vlynq_device *dev)
+{
+ int result;
+ struct plat_vlynq_data *pdata = dev->dev.platform_data;
+
+ result = gpio_request(pdata->gpio_bit, "vlynq");
+ if (result)
+ goto out;
+
+ ar7_device_reset(pdata->reset_bit);
+
+ result = ar7_gpio_disable(pdata->gpio_bit);
+ if (result)
+ goto out_enabled;
+
+ result = ar7_gpio_enable(pdata->gpio_bit);
+ if (result)
+ goto out_enabled;
+
+ result = gpio_direction_output(pdata->gpio_bit, 0);
+ if (result)
+ goto out_gpio_enabled;
+
+ msleep(50);
+
+ gpio_set_value(pdata->gpio_bit, 1);
+ msleep(50);
+
+ return 0;
+
+out_gpio_enabled:
+ ar7_gpio_disable(pdata->gpio_bit);
+out_enabled:
+ ar7_device_disable(pdata->reset_bit);
+ gpio_free(pdata->gpio_bit);
+out:
+ return result;
+}
+
+static void vlynq_off(struct vlynq_device *dev)
+{
+ struct plat_vlynq_data *pdata = dev->dev.platform_data;
+ ar7_gpio_disable(pdata->gpio_bit);
+ gpio_free(pdata->gpio_bit);
+ ar7_device_disable(pdata->reset_bit);
+}
+
+static struct resource physmap_flash_resource = {
+ .name = "mem",
+ .flags = IORESOURCE_MEM,
+ .start = 0x10000000,
+ .end = 0x107fffff,
+};
+
+static struct resource cpmac_low_res[] = {
+ {
+ .name = "regs",
+ .flags = IORESOURCE_MEM,
+ .start = AR7_REGS_MAC0,
+ .end = AR7_REGS_MAC0 + 0x7ff,
+ },
+ {
+ .name = "irq",
+ .flags = IORESOURCE_IRQ,
+ .start = 27,
+ .end = 27,
+ },
+};
+
+static struct resource cpmac_high_res[] = {
+ {
+ .name = "regs",
+ .flags = IORESOURCE_MEM,
+ .start = AR7_REGS_MAC1,
+ .end = AR7_REGS_MAC1 + 0x7ff,
+ },
+ {
+ .name = "irq",
+ .flags = IORESOURCE_IRQ,
+ .start = 41,
+ .end = 41,
+ },
+};
+
+static struct resource vlynq_low_res[] = {
+ {
+ .name = "regs",
+ .flags = IORESOURCE_MEM,
+ .start = AR7_REGS_VLYNQ0,
+ .end = AR7_REGS_VLYNQ0 + 0xff,
+ },
+ {
+ .name = "irq",
+ .flags = IORESOURCE_IRQ,
+ .start = 29,
+ .end = 29,
+ },
+ {
+ .name = "mem",
+ .flags = IORESOURCE_MEM,
+ .start = 0x04000000,
+ .end = 0x04ffffff,
+ },
+ {
+ .name = "devirq",
+ .flags = IORESOURCE_IRQ,
+ .start = 80,
+ .end = 111,
+ },
+};
+
+static struct resource vlynq_high_res[] = {
+ {
+ .name = "regs",
+ .flags = IORESOURCE_MEM,
+ .start = AR7_REGS_VLYNQ1,
+ .end = AR7_REGS_VLYNQ1 + 0xff,
+ },
+ {
+ .name = "irq",
+ .flags = IORESOURCE_IRQ,
+ .start = 33,
+ .end = 33,
+ },
+ {
+ .name = "mem",
+ .flags = IORESOURCE_MEM,
+ .start = 0x0c000000,
+ .end = 0x0cffffff,
+ },
+ {
+ .name = "devirq",
+ .flags = IORESOURCE_IRQ,
+ .start = 112,
+ .end = 143,
+ },
+};
+
+static struct resource usb_res[] = {
+ {
+ .name = "regs",
+ .flags = IORESOURCE_MEM,
+ .start = AR7_REGS_USB,
+ .end = AR7_REGS_USB + 0xff,
+ },
+ {
+ .name = "irq",
+ .flags = IORESOURCE_IRQ,
+ .start = 32,
+ .end = 32,
+ },
+ {
+ .name = "mem",
+ .flags = IORESOURCE_MEM,
+ .start = 0x03400000,
+ .end = 0x034001fff,
+ },
+};
+
+static struct physmap_flash_data physmap_flash_data = {
+ .width = 2,
+};
+
+static struct plat_cpmac_data cpmac_low_data = {
+ .reset_bit = 17,
+ .power_bit = 20,
+ .phy_mask = 0x80000000,
+};
+
+static struct plat_cpmac_data cpmac_high_data = {
+ .reset_bit = 21,
+ .power_bit = 22,
+ .phy_mask = 0x7fffffff,
+};
+
+static struct plat_vlynq_data vlynq_low_data = {
+ .ops.on = vlynq_on,
+ .ops.off = vlynq_off,
+ .reset_bit = 20,
+ .gpio_bit = 18,
+};
+
+static struct plat_vlynq_data vlynq_high_data = {
+ .ops.on = vlynq_on,
+ .ops.off = vlynq_off,
+ .reset_bit = 16,
+ .gpio_bit = 19,
+};
+
+static struct platform_device physmap_flash = {
+ .id = 0,
+ .name = "physmap-flash",
+ .dev.platform_data = &physmap_flash_data,
+ .resource = &physmap_flash_resource,
+ .num_resources = 1,
+};
+
+static u64 cpmac_dma_mask = DMA_32BIT_MASK;
+static struct platform_device cpmac_low = {
+ .id = 0,
+ .name = "cpmac",
+ .dev = {
+ .dma_mask = &cpmac_dma_mask,
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ .platform_data = &cpmac_low_data,
+ },
+ .resource = cpmac_low_res,
+ .num_resources = ARRAY_SIZE(cpmac_low_res),
+};
+
+static struct platform_device cpmac_high = {
+ .id = 1,
+ .name = "cpmac",
+ .dev = {
+ .dma_mask = &cpmac_dma_mask,
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ .platform_data = &cpmac_high_data,
+ },
+ .resource = cpmac_high_res,
+ .num_resources = ARRAY_SIZE(cpmac_high_res),
+};
+
+static struct platform_device vlynq_low = {
+ .id = 0,
+ .name = "vlynq",
+ .dev.platform_data = &vlynq_low_data,
+ .resource = vlynq_low_res,
+ .num_resources = ARRAY_SIZE(vlynq_low_res),
+};
+
+static struct platform_device vlynq_high = {
+ .id = 1,
+ .name = "vlynq",
+ .dev.platform_data = &vlynq_high_data,
+ .resource = vlynq_high_res,
+ .num_resources = ARRAY_SIZE(vlynq_high_res),
+};
+
+
+static struct gpio_led default_leds[] = {
+ {
+ .name = "status",
+ .gpio = 8,
+ .active_low = 1,
+ },
+};
+
+static struct gpio_led dsl502t_leds[] = {
+ {
+ .name = "status",
+ .gpio = 9,
+ .active_low = 1,
+ },
+ {
+ .name = "ethernet",
+ .gpio = 7,
+ .active_low = 1,
+ },
+ {
+ .name = "usb",
+ .gpio = 12,
+ .active_low = 1,
+ },
+};
+
+static struct gpio_led dg834g_leds[] = {
+ {
+ .name = "ppp",
+ .gpio = 6,
+ .active_low = 1,
+ },
+ {
+ .name = "status",
+ .gpio = 7,
+ .active_low = 1,
+ },
+ {
+ .name = "adsl",
+ .gpio = 8,
+ .active_low = 1,
+ },
+ {
+ .name = "wifi",
+ .gpio = 12,
+ .active_low = 1,
+ },
+ {
+ .name = "power",
+ .gpio = 14,
+ .active_low = 1,
+ .default_trigger = "default-on",
+ },
+};
+
+static struct gpio_led fb_sl_leds[] = {
+ {
+ .name = "1",
+ .gpio = 7,
+ },
+ {
+ .name = "2",
+ .gpio = 13,
+ .active_low = 1,
+ },
+ {
+ .name = "3",
+ .gpio = 10,
+ .active_low = 1,
+ },
+ {
+ .name = "4",
+ .gpio = 12,
+ .active_low = 1,
+ },
+ {
+ .name = "5",
+ .gpio = 9,
+ .active_low = 1,
+ },
+};
+
+static struct gpio_led fb_fon_leds[] = {
+ {
+ .name = "1",
+ .gpio = 8,
+ },
+ {
+ .name = "2",
+ .gpio = 3,
+ .active_low = 1,
+ },
+ {
+ .name = "3",
+ .gpio = 5,
+ },
+ {
+ .name = "4",
+ .gpio = 4,
+ .active_low = 1,
+ },
+ {
+ .name = "5",
+ .gpio = 11,
+ .active_low = 1,
+ },
+};
+
+static struct gpio_led_platform_data ar7_led_data;
+
+static struct platform_device ar7_gpio_leds = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev = {
+ .platform_data = &ar7_led_data,
+ }
+};
+
+static struct platform_device ar7_udc = {
+ .id = -1,
+ .name = "ar7_udc",
+ .resource = usb_res,
+ .num_resources = ARRAY_SIZE(usb_res),
+};
+
+static inline unsigned char char2hex(char h)
+{
+ switch (h) {
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ return h - '0';
+ case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+ return h - 'A' + 10;
+ case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+ return h - 'a' + 10;
+ default:
+ return 0;
+ }
+}
+
+static void cpmac_get_mac(int instance, unsigned char *dev_addr)
+{
+ int i;
+ char name[5], default_mac[ETH_ALEN], *mac;
+
+ mac = NULL;
+ sprintf(name, "mac%c", 'a' + instance);
+ mac = prom_getenv(name);
+ if (!mac) {
+ sprintf(name, "mac%c", 'a');
+ mac = prom_getenv(name);
+ }
+ if (!mac) {
+ random_ether_addr(default_mac);
+ mac = default_mac;
+ }
+ for (i = 0; i < 6; i++)
+ dev_addr[i] = (char2hex(mac[i * 3]) << 4) +
+ char2hex(mac[i * 3 + 1]);
+}
+
+static void __init detect_leds(void)
+{
+ char *prid, *usb_prod;
+
+ /* Default LEDs */
+ ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
+ ar7_led_data.leds = default_leds;
+
+ /* FIXME: the whole thing is unreliable */
+ prid = prom_getenv("ProductID");
+ usb_prod = prom_getenv("usb_prod");
+
+ /* If we can't get the product id from PROM, use the default LEDs */
+ if (!prid)
+ return;
+
+ if (strstr(prid, "Fritz_Box_FON")) {
+ ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
+ ar7_led_data.leds = fb_fon_leds;
+ } else if (strstr(prid, "Fritz_Box_")) {
+ ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
+ ar7_led_data.leds = fb_sl_leds;
+ } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
+ && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
+ ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
+ ar7_led_data.leds = dsl502t_leds;
+ } else if (strstr(prid, "DG834")) {
+ ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
+ ar7_led_data.leds = dg834g_leds;
+ }
+}
+
+static int __init ar7_register_devices(void)
+{
+ int res;
+ static struct uart_port uart_port[2];
+
+ memset(uart_port, 0, sizeof(struct uart_port) * 2);
+
+ uart_port[0].type = PORT_16550A;
+ uart_port[0].line = 0;
+ uart_port[0].irq = AR7_IRQ_UART0;
+ uart_port[0].uartclk = ar7_bus_freq() / 2;
+ uart_port[0].iotype = UPIO_MEM32;
+ uart_port[0].mapbase = AR7_REGS_UART0;
+ uart_port[0].membase = ioremap(uart_port[0].mapbase, 256);
+ uart_port[0].regshift = 2;
+ res = early_serial_setup(&uart_port[0]);
+ if (res)
+ return res;
+
+
+ /* Only TNETD73xx have a second serial port */
+ if (ar7_has_second_uart()) {
+ uart_port[1].type = PORT_16550A;
+ uart_port[1].line = 1;
+ uart_port[1].irq = AR7_IRQ_UART1;
+ uart_port[1].uartclk = ar7_bus_freq() / 2;
+ uart_port[1].iotype = UPIO_MEM32;
+ uart_port[1].mapbase = UR8_REGS_UART1;
+ uart_port[1].membase = ioremap(uart_port[1].mapbase, 256);
+ uart_port[1].regshift = 2;
+ res = early_serial_setup(&uart_port[1]);
+ if (res)
+ return res;
+ }
+
+ res = platform_device_register(&physmap_flash);
+ if (res)
+ return res;
+
+ ar7_device_disable(vlynq_low_data.reset_bit);
+ res = platform_device_register(&vlynq_low);
+ if (res)
+ return res;
+
+ if (ar7_has_high_vlynq()) {
+ ar7_device_disable(vlynq_high_data.reset_bit);
+ res = platform_device_register(&vlynq_high);
+ if (res)
+ return res;
+ }
+
+ if (ar7_has_high_cpmac()) {
+ cpmac_get_mac(1, cpmac_high_data.dev_addr);
+ res = platform_device_register(&cpmac_high);
+ if (res)
+ return res;
+ } else {
+ cpmac_low_data.phy_mask = 0xffffffff;
+ }
+
+ cpmac_get_mac(0, cpmac_low_data.dev_addr);
+ res = platform_device_register(&cpmac_low);
+ if (res)
+ return res;
+
+ detect_leds();
+ res = platform_device_register(&ar7_gpio_leds);
+ if (res)
+ return res;
+
+ res = platform_device_register(&ar7_udc);
+
+ return res;
+}
+arch_initcall(ar7_register_devices);