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Message-ID: <5e088bd90901301228l3a0ab25m35a7341ac972e9de@mail.gmail.com>
Date: Fri, 30 Jan 2009 12:28:38 -0800
From: Steve Sakoman <sakoman@...il.com>
To: linux-omap <linux-omap@...r.kernel.org>, netdev@...r.kernel.org
Subject: [RFC] ARM: Add SMSC911X support to Overo platform
Gumstix will soon be shipping a variant of their Summit board that
includes an SMSC9221 ethernet interface. This patch is intended to
provide support via the smsc911x driver when enabled in defconfig.
The final submission of course will also include an updated defconfig.
Signed-off-by: Steve Sakoman <steve@...oman.com>
---
diff --git a/arch/arm/mach-omap2/board-overo.c
b/arch/arm/mach-omap2/board-overo.c
index 9995ac2..97d95a4 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -55,6 +55,63 @@
#define GPMC_CS0_BASE 0x60
#define GPMC_CS_SIZE 0x30
+#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
+
+#include <linux/smsc911x.h>
+
+static struct resource overo_smsc911x_resources[] = {
+ {
+ .name = "smsc911x-memory",
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
+ },
+};
+
+static struct smsc911x_platform_config overo_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 overo_smsc911x_device = {
+ .name = "smsc911x",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(overo_smsc911x_resources),
+ .resource = &overo_smsc911x_resources,
+ .dev = {
+ .platform_data = &overo_smsc911x_config,
+ },
+};
+
+static inline void __init overo_init_smsc911x(void)
+{
+ unsigned long cs_mem_base;
+
+ if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
+ printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
+ return;
+ }
+
+ overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
+ overo_smsc911x_resources[0].end = cs_mem_base + 0xff;
+
+ if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
+ (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
+ gpio_export(OVERO_SMSC911X_GPIO, 0);
+ } else {
+ printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
+ return;
+ }
+
+ overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO),
+ overo_smsc911x_resources[1].end = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO),
+}
+
+#endif
+
static struct mtd_partition overo_nand_partitions[] = {
{
.name = "xloader",
@@ -187,6 +244,9 @@ static void __init overo_init_irq(void)
omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
omap_init_irq();
omap_gpio_init();
+#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
+ overo_init_smsc911x();
+#endif
}
static struct platform_device overo_lcd_device = {
@@ -204,6 +264,9 @@ static struct omap_board_config_kernel
overo_config[] __initdata = {
};
static struct platform_device *overo_devices[] __initdata = {
+#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
+ &overo_smsc911x_device,
+#endif
&overo_lcd_device,
};
diff --git a/arch/arm/plat-omap/include/mach/board-overo.h
b/arch/arm/plat-omap/include/mach/board-overo.h
index 7ecae66..8635171 100644
--- a/arch/arm/plat-omap/include/mach/board-overo.h
+++ b/arch/arm/plat-omap/include/mach/board-overo.h
@@ -22,5 +22,8 @@
#define OVERO_GPIO_USBH_CPEN 168
#define OVERO_GPIO_USBH_NRESET 183
+#define OVERO_SMSC911X_CS 5
+#define OVERO_SMSC911X_GPIO 176
+
#endif /* ____ASM_ARCH_OVERO_H */
--
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