ARM: LPC32xx: Ethernet support

This patch adds ethernet support to the LPC32xx ARM architecture. The actual
driver in drivers/net is contained in a separate patch.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-lpc32xx/Kconfig

@@ -29,5 +29,30 @@ config ARCH_LPC32XX_UART6_SELECT
 
 endmenu
 
+menu "LPC32XX chip components"
+
+config ARCH_LPC32XX_IRAM_FOR_NET
+	bool "Use IRAM for network buffers"
+	default y
+	help
+	  Say Y here to use the LPC internal fast IRAM (i.e. 256KB SRAM) as
+	  network buffer.  If the total combined required buffer sizes is
+	  larger than the size of IRAM, then SDRAM will be used instead.
+
+	  This can be enabled safely if the IRAM is not intended for other
+	  uses.
+
+config ARCH_LPC32XX_MII_SUPPORT
+	bool "Check to enable MII support or leave disabled for RMII support"
+	help
+	  Say Y here to enable MII support, or N for RMII support. Regardless of
+	  which support is selected, the ethernet interface driver needs to be
+	  selected in the device driver networking section.
+
+	  The PHY3250 reference board uses RMII, so users of this board should
+	  say N.
+
+endmenu
+
 endif
 

arch/arm/mach-lpc32xx/clock.c

@@ -1134,7 +1134,7 @@ static struct clk_lookup lookups[] = {
 	_REGISTER_CLOCK("lpc32xx-adc", NULL, clk_adc)
 	_REGISTER_CLOCK("ts-lpc32xx", NULL, clk_tsc)
 	_REGISTER_CLOCK("dev:mmc0", NULL, clk_mmc)
-	_REGISTER_CLOCK("lpc-net.0", NULL, clk_net)
+	_REGISTER_CLOCK("lpc-eth.0", NULL, clk_net)
 	_REGISTER_CLOCK("dev:clcd", NULL, clk_lcd)
 	_REGISTER_CLOCK("lpc32xx_udc", "ck_usbd", clk_usbd)
 	_REGISTER_CLOCK("lpc32xx_rtc", NULL, clk_rtc)

arch/arm/mach-lpc32xx/common.c

@@ -185,6 +185,27 @@ struct platform_device lpc32xx_ohci_device = {
 	.resource = ohci_resources,
 };
 
+/*
+ * Network Support
+ */
+static struct resource net_resources[] = {
+	[0] = DEFINE_RES_MEM(LPC32XX_ETHERNET_BASE, SZ_4K),
+	[1] = DEFINE_RES_MEM(LPC32XX_IRAM_BASE, SZ_128K),
+	[2] = DEFINE_RES_IRQ(IRQ_LPC32XX_ETHERNET),
+};
+
+static u64 lpc32xx_mac_dma_mask = 0xffffffffUL;
+struct platform_device lpc32xx_net_device = {
+	.name = "lpc-eth",
+	.id = 0,
+	.dev = {
+		.dma_mask = &lpc32xx_mac_dma_mask,
+		.coherent_dma_mask = 0xffffffffUL,
+	},
+	.num_resources = ARRAY_SIZE(net_resources),
+	.resource = net_resources,
+};
+
 /*
  * Returns the unique ID for the device
  */

arch/arm/mach-lpc32xx/common.h

@@ -19,6 +19,7 @@
 #ifndef __LPC32XX_COMMON_H
 #define __LPC32XX_COMMON_H
 
+#include <mach/board.h>
 #include <linux/platform_device.h>
 
 /*
@@ -32,6 +33,7 @@ extern struct platform_device lpc32xx_tsc_device;
 extern struct platform_device lpc32xx_adc_device;
 extern struct platform_device lpc32xx_rtc_device;
 extern struct platform_device lpc32xx_ohci_device;
+extern struct platform_device lpc32xx_net_device;
 
 /*
  * Other arch specific structures and functions
@@ -67,8 +69,6 @@ extern u32 clk_get_pclk_div(void);
  */
 extern void lpc32xx_get_uid(u32 devid[4]);
 
-extern u32 lpc32xx_return_iram_size(void);
-
 /*
  * Pointers used for sizing and copying suspend function data
  */

arch/arm/mach-lpc32xx/include/mach/board.h

@@ -0,0 +1,24 @@
+/*
+ * arm/arch/mach-lpc32xx/include/mach/board.h
+ *
+ * Author: Kevin Wells <kevin.wells@nxp.com>
+ *
+ * Copyright (C) 2010 NXP Semiconductors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __ASM_ARCH_BOARD_H
+#define __ASM_ARCH_BOARD_H
+
+extern u32 lpc32xx_return_iram_size(void);
+
+#endif  /* __ASM_ARCH_BOARD_H */

arch/arm/mach-lpc32xx/irq.c

@@ -146,6 +146,10 @@ static const struct lpc32xx_event_info lpc32xx_events[NR_IRQS] = {
 		.event_group = &lpc32xx_event_int_regs,
 		.mask = LPC32XX_CLKPWR_INTSRC_KEY_BIT,
 	},
+	[IRQ_LPC32XX_ETHERNET] = {
+		.event_group = &lpc32xx_event_int_regs,
+		.mask = LPC32XX_CLKPWR_INTSRC_MAC_BIT,
+	},
 	[IRQ_LPC32XX_USB_OTG_ATX] = {
 		.event_group = &lpc32xx_event_int_regs,
 		.mask = LPC32XX_CLKPWR_INTSRC_USBATXINT_BIT,

arch/arm/mach-lpc32xx/phy3250.c

@@ -37,6 +37,7 @@
 
 #include <mach/hardware.h>
 #include <mach/platform.h>
+#include <mach/board.h>
 #include <mach/gpio-lpc32xx.h>
 #include "common.h"
 
@@ -280,6 +281,7 @@ static struct platform_device *phy3250_devs[] __initdata = {
 	&lpc32xx_gpio_led_device,
 	&lpc32xx_adc_device,
 	&lpc32xx_ohci_device,
+	&lpc32xx_net_device,
 };
 
 static struct amba_device *amba_devs[] __initdata = {