ARM: OMAP3LOGIC: Add generic smsc911x support when connected to GPMC

Introduce of a generic way to setup smsc911x based Ethernet
controller connected to GPMC similar to gpmc-smc91x but without
timing setup.

Signed-off-by: Tim Nordell <tim.nordell@logicpd.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 1c525a8b9c5f6ba112ee18bc5f6b2e8032a482b5..9edacb0ab035651f9cc8921ce3dd64423e2bfe13 100644 (file)
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -184,3 +184,6 @@ obj-y                                       += $(nand-m) $(nand-y)
 
 smc91x-$(CONFIG_SMC91X)                        := gpmc-smc91x.o
 obj-y                                  += $(smc91x-m) $(smc91x-y)
+
+smsc911x-$(CONFIG_SMSC911X)            := gpmc-smsc911x.o
+obj-y                                  += $(smsc911x-m) $(smsc911x-y)

diff --git a/arch/arm/mach-omap2/gpmc-smsc911x.c b/arch/arm/mach-omap2/gpmc-smsc911x.c
new file mode 100644 (file)
index 0000000..703f150
--- /dev/null
+++ b/arch/arm/mach-omap2/gpmc-smsc911x.c
@@ -0,0 +1,113 @@
+/*
+ * linux/arch/arm/mach-omap2/gpmc-smsc911x.c
+ *
+ * Copyright (C) 2009 Li-Pro.Net
+ * Stephan Linz <linz@li-pro.net>
+ *
+ * Modified from linux/arch/arm/mach-omap2/gpmc-smc91x.c
+ *
+ * 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/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/smsc911x.h>
+
+#include <plat/board.h>
+#include <plat/gpmc.h>
+#include <plat/gpmc-smsc911x.h>
+
+static struct omap_smsc911x_platform_data *gpmc_cfg;
+
+static struct resource gpmc_smsc911x_resources[] = {
+       [0] = {
+               .flags          = IORESOURCE_MEM,
+       },
+       [1] = {
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct smsc911x_platform_config gpmc_smsc911x_config = {
+       .phy_interface  = PHY_INTERFACE_MODE_MII,
+       .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
+       .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
+       .flags          = SMSC911X_USE_16BIT,
+};
+
+static struct platform_device gpmc_smsc911x_device = {
+       .name           = "smsc911x",
+       .id             = -1,
+       .num_resources  = ARRAY_SIZE(gpmc_smsc911x_resources),
+       .resource       = gpmc_smsc911x_resources,
+       .dev            = {
+               .platform_data = &gpmc_smsc911x_config,
+       },
+};
+
+/*
+ * Initialize smsc911x device connected to the GPMC. Note that we
+ * assume that pin multiplexing is done in the board-*.c file,
+ * or in the bootloader.
+ */
+void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data)
+{
+       unsigned long cs_mem_base;
+       int ret;
+
+       gpmc_cfg = board_data;
+
+       if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
+               printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n");
+               return;
+       }
+
+       gpmc_smsc911x_resources[0].start = cs_mem_base + 0x0;
+       gpmc_smsc911x_resources[0].end = cs_mem_base + 0xff;
+
+       if (gpio_request(gpmc_cfg->gpio_irq, "smsc911x irq") < 0) {
+               printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",
+                               gpmc_cfg->gpio_irq);
+               goto free1;
+       }
+
+       gpio_direction_input(gpmc_cfg->gpio_irq);
+       gpmc_smsc911x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq);
+       gpmc_smsc911x_resources[1].flags |=
+                                       (gpmc_cfg->flags & IRQF_TRIGGER_MASK);
+
+       if (gpio_is_valid(gpmc_cfg->gpio_reset)) {
+               ret = gpio_request(gpmc_cfg->gpio_reset, "smsc911x reset");
+               if (ret) {
+                       printk(KERN_ERR "Failed to request GPIO%d for smsc911x reset\n",
+                                       gpmc_cfg->gpio_reset);
+                       goto free2;
+               }
+
+               gpio_direction_output(gpmc_cfg->gpio_reset, 1);
+               gpio_set_value(gpmc_cfg->gpio_reset, 0);
+               msleep(100);
+               gpio_set_value(gpmc_cfg->gpio_reset, 1);
+       }
+
+       if (platform_device_register(&gpmc_smsc911x_device) < 0) {
+               printk(KERN_ERR "Unable to register smsc911x device\n");
+               gpio_free(gpmc_cfg->gpio_reset);
+               goto free2;
+       }
+
+       return;
+
+free2:
+       gpio_free(gpmc_cfg->gpio_irq);
+free1:
+       gpmc_cs_free(gpmc_cfg->cs);
+
+       printk(KERN_ERR "Could not initialize smsc911x\n");
+}

diff --git a/arch/arm/plat-omap/include/plat/gpmc-smsc911x.h b/arch/arm/plat-omap/include/plat/gpmc-smsc911x.h
new file mode 100644 (file)
index 0000000..872de0b
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/gpmc-smsc911x.h
@@ -0,0 +1,35 @@
+/*
+ * arch/arm/plat-omap/include/plat/gpmc-smsc911x.h
+ *
+ * Copyright (C) 2009 Li-Pro.Net
+ * Stephan Linz <linz@li-pro.net>
+ *
+ * Modified from arch/arm/plat-omap/include/plat/gpmc-smc91x.h
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_OMAP_GPMC_SMSC911X_H__
+
+struct omap_smsc911x_platform_data {
+       int     cs;
+       int     gpio_irq;
+       int     gpio_reset;
+       u32     flags;
+};
+
+#if defined(CONFIG_SMSC911X) || \
+       defined(CONFIG_SMSC911X_MODULE)
+
+extern void gpmc_smsc911x_init(struct omap_smsc911x_platform_data *d);
+
+#else
+
+static inline void gpmc_smsc911x_init(struct omap_smsc911x_platform_data *d)
+{
+}
+
+#endif
+#endif