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));
+}