ARM: OMAP3: Add support for OMAP3 Zoom2 board

This patch creates the minimal OMAP3 Zoom2 board support.

Signed-off-by: Mikkel Christensen <mlc@ti.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 160 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-zoom-debugboard.c b/arch/arm/mach-omap2/board-zoom-debugboard.c
new file mode 100644
index 000000000000..bac5c4321ff7
--- /dev/null
+++ b/arch/arm/mach-omap2/board-zoom-debugboard.c
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2009 Texas Instruments Inc.
+ * Mikkel Christensen <mlc@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/serial_8250.h>
+#include <linux/smsc911x.h>
+
+#include <mach/gpmc.h>
+
+#define ZOOM2_SMSC911X_CS	7
+#define ZOOM2_SMSC911X_GPIO	158
+#define ZOOM2_QUADUART_CS	3
+#define ZOOM2_QUADUART_GPIO	102
+#define QUART_CLK		1843200
+#define DEBUG_BASE		0x08000000
+#define ZOOM2_ETHR_START	DEBUG_BASE
+
+static struct resource zoom2_smsc911x_resources[] = {
+	[0] = {
+		.start	= ZOOM2_ETHR_START,
+		.end	= ZOOM2_ETHR_START + SZ_4K,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
+	},
+};
+
+static struct smsc911x_platform_config zoom2_smsc911x_config = {
+	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
+	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
+	.flags		= SMSC911X_USE_32BIT,
+	.phy_interface	= PHY_INTERFACE_MODE_MII,
+};
+
+static struct platform_device zoom2_smsc911x_device = {
+	.name		= "smsc911x",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(zoom2_smsc911x_resources),
+	.resource	= zoom2_smsc911x_resources,
+	.dev		= {
+		.platform_data = &zoom2_smsc911x_config,
+	},
+};
+
+static inline void __init zoom2_init_smsc911x(void)
+{
+	int eth_cs;
+	unsigned long cs_mem_base;
+	int eth_gpio = 0;
+
+	eth_cs = ZOOM2_SMSC911X_CS;
+
+	if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
+		printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n");
+		return;
+	}
+
+	zoom2_smsc911x_resources[0].start = cs_mem_base + 0x0;
+	zoom2_smsc911x_resources[0].end   = cs_mem_base + 0xff;
+
+	eth_gpio = ZOOM2_SMSC911X_GPIO;
+
+	zoom2_smsc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
+
+	if (gpio_request(eth_gpio, "smsc911x irq") < 0) {
+		printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",
+				eth_gpio);
+		return;
+	}
+	gpio_direction_input(eth_gpio);
+}
+
+static struct plat_serial8250_port serial_platform_data[] = {
+	{
+		.mapbase	= 0x10000000,
+		.irq		= OMAP_GPIO_IRQ(102),
+		.flags		= UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ,
+		.iotype		= UPIO_MEM,
+		.regshift	= 1,
+		.uartclk	= QUART_CLK,
+	}, {
+		.flags		= 0
+	}
+};
+
+static struct platform_device zoom2_debugboard_serial_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM1,
+	.dev			= {
+		.platform_data	= serial_platform_data,
+	},
+};
+
+static inline void __init zoom2_init_quaduart(void)
+{
+	int quart_cs;
+	unsigned long cs_mem_base;
+	int quart_gpio = 0;
+
+	quart_cs = ZOOM2_QUADUART_CS;
+
+	if (gpmc_cs_request(quart_cs, SZ_1M, &cs_mem_base) < 0) {
+		printk(KERN_ERR "Failed to request GPMC mem"
+				"for Quad UART(TL16CP754C)\n");
+		return;
+	}
+
+	quart_gpio = ZOOM2_QUADUART_GPIO;
+
+	if (gpio_request(quart_gpio, "TL16CP754C GPIO") < 0) {
+		printk(KERN_ERR "Failed to request GPIO%d for TL16CP754C\n",
+								quart_gpio);
+		return;
+	}
+	gpio_direction_input(quart_gpio);
+}
+
+static inline int omap_zoom2_debugboard_detect(void)
+{
+	int debug_board_detect = 0;
+
+	debug_board_detect = ZOOM2_SMSC911X_GPIO;
+
+	if (gpio_request(debug_board_detect, "Zoom2 debug board detect") < 0) {
+		printk(KERN_ERR "Failed to request GPIO%d for Zoom2 debug"
+		"board detect\n", debug_board_detect);
+		return 0;
+	}
+	gpio_direction_input(debug_board_detect);
+
+	if (!gpio_get_value(debug_board_detect)) {
+		gpio_free(debug_board_detect);
+		return 0;
+	}
+	return 1;
+}
+
+static struct platform_device *zoom2_devices[] __initdata = {
+	&zoom2_smsc911x_device,
+	&zoom2_debugboard_serial_device,
+};
+
+int __init omap_zoom2_debugboard_init(void)
+{
+	if (!omap_zoom2_debugboard_detect())
+		return 0;
+
+	zoom2_init_smsc911x();
+	zoom2_init_quaduart();
+	return platform_add_devices(zoom2_devices, ARRAY_SIZE(zoom2_devices));
+}