From 8d27b2f7988b652dbabf79291a3e2550c06e1af5 Mon Sep 17 00:00:00 2001
From: Martin Michlmayr <tbm@cyrius.com>
Date: Thu, 5 Nov 2009 20:27:46 +0000
Subject: [ARM] Kirkwood: Remove code duplication in QNAP setup files

Remove the code duplication found in the setup files of TS-219 and
TS-41x.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
---
 arch/arm/mach-kirkwood/tsx1x-common.c | 113 ++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 arch/arm/mach-kirkwood/tsx1x-common.c

(limited to 'arch/arm/mach-kirkwood/tsx1x-common.c')

diff --git a/arch/arm/mach-kirkwood/tsx1x-common.c b/arch/arm/mach-kirkwood/tsx1x-common.c
new file mode 100644
index 00000000000..7221c20b2af
--- /dev/null
+++ b/arch/arm/mach-kirkwood/tsx1x-common.c
@@ -0,0 +1,113 @@
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/spi/flash.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/orion_spi.h>
+#include <linux/serial_reg.h>
+#include <mach/kirkwood.h>
+#include "common.h"
+
+/*
+ * QNAP TS-x1x Boards flash
+ */
+
+/****************************************************************************
+ * 16 MiB NOR flash. The struct mtd_partition is not in the same order as the
+ *     partitions on the device because we want to keep compatability with
+ *     the QNAP firmware.
+ * Layout as used by QNAP:
+ *  0x00000000-0x00080000 : "U-Boot"
+ *  0x00200000-0x00400000 : "Kernel"
+ *  0x00400000-0x00d00000 : "RootFS"
+ *  0x00d00000-0x01000000 : "RootFS2"
+ *  0x00080000-0x000c0000 : "U-Boot Config"
+ *  0x000c0000-0x00200000 : "NAS Config"
+ *
+ * We'll use "RootFS1" instead of "RootFS" to stay compatible with the layout
+ * used by the QNAP TS-109/TS-209.
+ *
+ ***************************************************************************/
+
+struct mtd_partition qnap_tsx1x_partitions[] = {
+	{
+		.name		= "U-Boot",
+		.size		= 0x00080000,
+		.offset		= 0,
+		.mask_flags	= MTD_WRITEABLE,
+	}, {
+		.name		= "Kernel",
+		.size		= 0x00200000,
+		.offset		= 0x00200000,
+	}, {
+		.name		= "RootFS1",
+		.size		= 0x00900000,
+		.offset		= 0x00400000,
+	}, {
+		.name		= "RootFS2",
+		.size		= 0x00300000,
+		.offset		= 0x00d00000,
+	}, {
+		.name		= "U-Boot Config",
+		.size		= 0x00040000,
+		.offset		= 0x00080000,
+	}, {
+		.name		= "NAS Config",
+		.size		= 0x00140000,
+		.offset		= 0x000c0000,
+	},
+};
+
+const struct flash_platform_data qnap_tsx1x_flash = {
+	.type		= "m25p128",
+	.name		= "spi_flash",
+	.parts		= qnap_tsx1x_partitions,
+	.nr_parts	= ARRAY_SIZE(qnap_tsx1x_partitions),
+};
+
+struct spi_board_info __initdata qnap_tsx1x_spi_slave_info[] = {
+	{
+		.modalias	= "m25p80",
+		.platform_data	= &qnap_tsx1x_flash,
+		.irq		= -1,
+		.max_speed_hz	= 20000000,
+		.bus_num	= 0,
+		.chip_select	= 0,
+	},
+};
+
+void qnap_tsx1x_register_flash(void)
+{
+	spi_register_board_info(qnap_tsx1x_spi_slave_info,
+				ARRAY_SIZE(qnap_tsx1x_spi_slave_info));
+	kirkwood_spi_init();
+}
+
+
+/*****************************************************************************
+ * QNAP TS-x1x specific power off method via UART1-attached PIC
+ ****************************************************************************/
+
+#define UART1_REG(x)	(UART1_VIRT_BASE + ((UART_##x) << 2))
+
+void qnap_tsx1x_power_off(void)
+{
+	/* 19200 baud divisor */
+	const unsigned divisor = ((kirkwood_tclk + (8 * 19200)) / (16 * 19200));
+
+	pr_info("%s: triggering power-off...\n", __func__);
+
+	/* hijack UART1 and reset into sane state (19200,8n1) */
+	writel(0x83, UART1_REG(LCR));
+	writel(divisor & 0xff, UART1_REG(DLL));
+	writel((divisor >> 8) & 0xff, UART1_REG(DLM));
+	writel(0x03, UART1_REG(LCR));
+	writel(0x00, UART1_REG(IER));
+	writel(0x00, UART1_REG(FCR));
+	writel(0x00, UART1_REG(MCR));
+
+	/* send the power-off command 'A' to PIC */
+	writel('A', UART1_REG(TX));
+}
+
-- 
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