[ARM] Orion: add Buffalo Terastation Pro II/Live support
This patch adds support for the Buffalo Terastation Pro II/Live.
Signed-off-by: Sylver Bruneau <sylver.bruneau@googlemail.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
diff --git a/arch/arm/mach-orion5x/terastation_pro2-setup.c b/arch/arm/mach-orion5x/terastation_pro2-setup.c
new file mode 100644
index 0000000..0b101d7d
--- /dev/null
+++ b/arch/arm/mach-orion5x/terastation_pro2-setup.c
@@ -0,0 +1,369 @@
+/*
+ * Buffalo Terastation Pro II/Live Board Setup
+ *
+ * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/pci.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mv643xx_eth.h>
+#include <linux/i2c.h>
+#include <linux/serial_reg.h>
+#include <asm/mach-types.h>
+#include <asm/gpio.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/pci.h>
+#include <mach/orion5x.h>
+#include "common.h"
+#include "mpp.h"
+
+/*****************************************************************************
+ * Terastation Pro 2/Live Info
+ ****************************************************************************/
+
+/*
+ * Terastation Pro 2 hardware :
+ * - Marvell 88F5281-D0
+ * - Marvell 88SX6042 SATA controller (PCI)
+ * - Marvell 88E1118 Gigabit Ethernet PHY
+ * - 256KB NOR flash
+ * - 128MB of DDR RAM
+ * - PCIe port (not equipped)
+ */
+
+/*
+ * 256K NOR flash Device bus boot chip select
+ */
+
+#define TSP2_NOR_BOOT_BASE 0xf4000000
+#define TSP2_NOR_BOOT_SIZE SZ_256K
+
+/*****************************************************************************
+ * 256KB NOR Flash on BOOT Device
+ ****************************************************************************/
+
+static struct physmap_flash_data tsp2_nor_flash_data = {
+ .width = 1,
+};
+
+static struct resource tsp2_nor_flash_resource = {
+ .flags = IORESOURCE_MEM,
+ .start = TSP2_NOR_BOOT_BASE,
+ .end = TSP2_NOR_BOOT_BASE + TSP2_NOR_BOOT_SIZE - 1,
+};
+
+static struct platform_device tsp2_nor_flash = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev = {
+ .platform_data = &tsp2_nor_flash_data,
+ },
+ .num_resources = 1,
+ .resource = &tsp2_nor_flash_resource,
+};
+
+/*****************************************************************************
+ * PCI
+ ****************************************************************************/
+#define TSP2_PCI_SLOT0_OFFS 7
+#define TSP2_PCI_SLOT0_IRQ_PIN 11
+
+void __init tsp2_pci_preinit(void)
+{
+ int pin;
+
+ /*
+ * Configure PCI GPIO IRQ pins
+ */
+ pin = TSP2_PCI_SLOT0_IRQ_PIN;
+ if (gpio_request(pin, "PCI Int1") == 0) {
+ if (gpio_direction_input(pin) == 0) {
+ set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW);
+ } else {
+ printk(KERN_ERR "tsp2_pci_preinit failed "
+ "to set_irq_type pin %d\n", pin);
+ gpio_free(pin);
+ }
+ } else {
+ printk(KERN_ERR "tsp2_pci_preinit failed to "
+ "gpio_request %d\n", pin);
+ }
+}
+
+static int __init tsp2_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ int irq;
+
+ /*
+ * Check for devices with hard-wired IRQs.
+ */
+ irq = orion5x_pci_map_irq(dev, slot, pin);
+ if (irq != -1)
+ return irq;
+
+ /*
+ * PCI IRQs are connected via GPIOs.
+ */
+ if (slot == TSP2_PCI_SLOT0_OFFS)
+ return gpio_to_irq(TSP2_PCI_SLOT0_IRQ_PIN);
+
+ return -1;
+}
+
+static struct hw_pci tsp2_pci __initdata = {
+ .nr_controllers = 2,
+ .preinit = tsp2_pci_preinit,
+ .swizzle = pci_std_swizzle,
+ .setup = orion5x_pci_sys_setup,
+ .scan = orion5x_pci_sys_scan_bus,
+ .map_irq = tsp2_pci_map_irq,
+};
+
+static int __init tsp2_pci_init(void)
+{
+ if (machine_is_terastation_pro2())
+ pci_common_init(&tsp2_pci);
+
+ return 0;
+}
+
+subsys_initcall(tsp2_pci_init);
+
+/*****************************************************************************
+ * Ethernet
+ ****************************************************************************/
+
+static struct mv643xx_eth_platform_data tsp2_eth_data = {
+ .phy_addr = 0,
+};
+
+/*****************************************************************************
+ * RTC 5C372a on I2C bus
+ ****************************************************************************/
+
+#define TSP2_RTC_GPIO 9
+
+static struct i2c_board_info __initdata tsp2_i2c_rtc = {
+ I2C_BOARD_INFO("rs5c372a", 0x32),
+};
+
+/*****************************************************************************
+ * Terastation Pro II specific power off method via UART1-attached
+ * microcontroller
+ ****************************************************************************/
+
+#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
+
+static int tsp2_miconread(unsigned char *buf, int count)
+{
+ int i;
+ int timeout;
+
+ for (i = 0; i < count; i++) {
+ timeout = 10;
+
+ while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
+ if (--timeout == 0)
+ break;
+ udelay(1000);
+ }
+
+ if (timeout == 0)
+ break;
+ buf[i] = readl(UART1_REG(RX));
+ }
+
+ /* return read bytes */
+ return i;
+}
+
+static int tsp2_miconwrite(const unsigned char *buf, int count)
+{
+ int i = 0;
+
+ while (count--) {
+ while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
+ barrier();
+ writel(buf[i++], UART1_REG(TX));
+ }
+
+ return 0;
+}
+
+static int tsp2_miconsend(const unsigned char *data, int count)
+{
+ int i;
+ unsigned char checksum = 0;
+ unsigned char recv_buf[40];
+ unsigned char send_buf[40];
+ unsigned char correct_ack[3];
+ int retry = 2;
+
+ /* Generate checksum */
+ for (i = 0; i < count; i++)
+ checksum -= data[i];
+
+ do {
+ /* Send data */
+ tsp2_miconwrite(data, count);
+
+ /* send checksum */
+ tsp2_miconwrite(&checksum, 1);
+
+ if (tsp2_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
+ printk(KERN_ERR ">%s: receive failed.\n", __func__);
+
+ /* send preamble to clear the receive buffer */
+ memset(&send_buf, 0xff, sizeof(send_buf));
+ tsp2_miconwrite(send_buf, sizeof(send_buf));
+
+ /* make dummy reads */
+ mdelay(100);
+ tsp2_miconread(recv_buf, sizeof(recv_buf));
+ } else {
+ /* Generate expected ack */
+ correct_ack[0] = 0x01;
+ correct_ack[1] = data[1];
+ correct_ack[2] = 0x00;
+
+ /* checksum Check */
+ if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
+ recv_buf[3]) & 0xFF) {
+ printk(KERN_ERR ">%s: Checksum Error : "
+ "Received data[%02x, %02x, %02x, %02x]"
+ "\n", __func__, recv_buf[0],
+ recv_buf[1], recv_buf[2], recv_buf[3]);
+ } else {
+ /* Check Received Data */
+ if (correct_ack[0] == recv_buf[0] &&
+ correct_ack[1] == recv_buf[1] &&
+ correct_ack[2] == recv_buf[2]) {
+ /* Interval for next command */
+ mdelay(10);
+
+ /* Receive ACK */
+ return 0;
+ }
+ }
+ /* Received NAK or illegal Data */
+ printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
+ "Received\n", __func__);
+ }
+ } while (retry--);
+
+ /* Interval for next command */
+ mdelay(10);
+
+ return -1;
+}
+
+static void tsp2_power_off(void)
+{
+ const unsigned char watchdogkill[] = {0x01, 0x35, 0x00};
+ const unsigned char shutdownwait[] = {0x00, 0x0c};
+ const unsigned char poweroff[] = {0x00, 0x06};
+ /* 38400 baud divisor */
+ const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
+
+ pr_info("%s: triggering power-off...\n", __func__);
+
+ /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
+ writel(0x83, UART1_REG(LCR));
+ writel(divisor & 0xff, UART1_REG(DLL));
+ writel((divisor >> 8) & 0xff, UART1_REG(DLM));
+ writel(0x1b, UART1_REG(LCR));
+ writel(0x00, UART1_REG(IER));
+ writel(0x07, UART1_REG(FCR));
+ writel(0x00, UART1_REG(MCR));
+
+ /* Send the commands to shutdown the Terastation Pro II */
+ tsp2_miconsend(watchdogkill, sizeof(watchdogkill)) ;
+ tsp2_miconsend(shutdownwait, sizeof(shutdownwait)) ;
+ tsp2_miconsend(poweroff, sizeof(poweroff));
+}
+
+/*****************************************************************************
+ * General Setup
+ ****************************************************************************/
+static struct orion5x_mpp_mode tsp2_mpp_modes[] __initdata = {
+ { 0, MPP_PCIE_RST_OUTn },
+ { 1, MPP_UNUSED },
+ { 2, MPP_UNUSED },
+ { 3, MPP_UNUSED },
+ { 4, MPP_NAND }, /* BOOT NAND Flash REn */
+ { 5, MPP_NAND }, /* BOOT NAND Flash WEn */
+ { 6, MPP_NAND }, /* BOOT NAND Flash HREn[0] */
+ { 7, MPP_NAND }, /* BOOT NAND Flash WEn[0] */
+ { 8, MPP_GPIO }, /* MICON int */
+ { 9, MPP_GPIO }, /* RTC int */
+ { 10, MPP_UNUSED },
+ { 11, MPP_GPIO }, /* PCI Int A */
+ { 12, MPP_UNUSED },
+ { 13, MPP_GPIO }, /* UPS on UART0 enable */
+ { 14, MPP_GPIO }, /* UPS low battery detection */
+ { 15, MPP_UNUSED },
+ { 16, MPP_UART }, /* UART1 RXD */
+ { 17, MPP_UART }, /* UART1 TXD */
+ { 18, MPP_UART }, /* UART1 CTSn */
+ { 19, MPP_UART }, /* UART1 RTSn */
+ { -1 },
+};
+
+static void __init tsp2_init(void)
+{
+ /*
+ * Setup basic Orion functions. Need to be called early.
+ */
+ orion5x_init();
+
+ orion5x_mpp_conf(tsp2_mpp_modes);
+
+ /*
+ * Configure peripherals.
+ */
+ orion5x_setup_dev_boot_win(TSP2_NOR_BOOT_BASE,
+ TSP2_NOR_BOOT_SIZE);
+ platform_device_register(&tsp2_nor_flash);
+
+ orion5x_ehci0_init();
+ orion5x_eth_init(&tsp2_eth_data);
+ orion5x_i2c_init();
+ orion5x_uart0_init();
+ orion5x_uart1_init();
+
+ /* Get RTC IRQ and register the chip */
+ if (gpio_request(TSP2_RTC_GPIO, "rtc") == 0) {
+ if (gpio_direction_input(TSP2_RTC_GPIO) == 0)
+ tsp2_i2c_rtc.irq = gpio_to_irq(TSP2_RTC_GPIO);
+ else
+ gpio_free(TSP2_RTC_GPIO);
+ }
+ if (tsp2_i2c_rtc.irq == 0)
+ pr_warning("tsp2_init: failed to get RTC IRQ\n");
+ i2c_register_board_info(0, &tsp2_i2c_rtc, 1);
+
+ /* register Terastation Pro II specific power-off method */
+ pm_power_off = tsp2_power_off;
+}
+
+MACHINE_START(TERASTATION_PRO2, "Buffalo Terastation Pro II/Live")
+ /* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> */
+ .phys_io = ORION5X_REGS_PHYS_BASE,
+ .io_pg_offst = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
+ .boot_params = 0x00000100,
+ .init_machine = tsp2_init,
+ .map_io = orion5x_map_io,
+ .init_irq = orion5x_init_irq,
+ .timer = &orion5x_timer,
+ .fixup = tag_fixup_mem32,
+MACHINE_END