From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754253Ab2CEVmF (ORCPT ); Mon, 5 Mar 2012 16:42:05 -0500 Received: from mail.work-microwave.de ([62.245.205.51]:45419 "EHLO work-microwave.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753876Ab2CEVmE (ORCPT ); Mon, 5 Mar 2012 16:42:04 -0500 From: Roland Stigge To: linux-arm-kernel@lists.infradead.org, kevin.wells@nxp.com, w.sang@pengutronix.de, linux-kernel@vger.kernel.org, arnd@arndb.de Cc: Roland Stigge Subject: [PATCH v4] ARM: LPC32xx: Ethernet support Date: Mon, 5 Mar 2012 22:41:27 +0100 Message-Id: <1330983687-32678-1-git-send-email-stigge@antcom.de> X-Mailer: git-send-email 1.7.9 X-FEAS-SYSTEM-WL: rst@work-microwave.de, 192.168.11.78 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- Changes from v3: * Kconfig default settings adjustment (n is default) * Use DEFINE_RES_MEM() and DEFINE_RES_IRQ() * Removed platform_data to be presented to the driver (unused anyway) arch/arm/mach-lpc32xx/Kconfig | 25 +++++++++++++++++++++++++ arch/arm/mach-lpc32xx/clock.c | 2 +- arch/arm/mach-lpc32xx/common.c | 21 +++++++++++++++++++++ arch/arm/mach-lpc32xx/common.h | 4 ++-- arch/arm/mach-lpc32xx/include/mach/board.h | 24 ++++++++++++++++++++++++ arch/arm/mach-lpc32xx/irq.c | 4 ++++ arch/arm/mach-lpc32xx/phy3250.c | 2 ++ 7 files changed, 79 insertions(+), 3 deletions(-) --- linux-2.6.orig/arch/arm/mach-lpc32xx/Kconfig +++ linux-2.6/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 --- linux-2.6.orig/arch/arm/mach-lpc32xx/clock.c +++ linux-2.6/arch/arm/mach-lpc32xx/clock.c @@ -1134,7 +1134,7 @@ static struct clk_lookup lookups[] = { _REGISTER_CLOCK(NULL, "i2s1_ck", clk_i2s1) _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) --- linux-2.6.orig/arch/arm/mach-lpc32xx/common.c +++ linux-2.6/arch/arm/mach-lpc32xx/common.c @@ -186,6 +186,27 @@ struct platform_device lpc32xx_ohci_devi }; /* + * 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 */ void lpc32xx_get_uid(u32 devid[4]) --- linux-2.6.orig/arch/arm/mach-lpc32xx/common.h +++ linux-2.6/arch/arm/mach-lpc32xx/common.h @@ -19,6 +19,7 @@ #ifndef __LPC32XX_COMMON_H #define __LPC32XX_COMMON_H +#include #include /* @@ -32,6 +33,7 @@ extern struct platform_device lpc32xx_ts 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 */ --- /dev/null +++ linux-2.6/arch/arm/mach-lpc32xx/include/mach/board.h @@ -0,0 +1,24 @@ +/* + * arm/arch/mach-lpc32xx/include/mach/board.h + * + * Author: Kevin Wells + * + * 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 */ --- linux-2.6.orig/arch/arm/mach-lpc32xx/irq.c +++ linux-2.6/arch/arm/mach-lpc32xx/irq.c @@ -150,6 +150,10 @@ static const struct lpc32xx_event_info l .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, --- linux-2.6.orig/arch/arm/mach-lpc32xx/phy3250.c +++ linux-2.6/arch/arm/mach-lpc32xx/phy3250.c @@ -37,6 +37,7 @@ #include #include +#include #include #include "common.h" @@ -278,6 +279,7 @@ static struct platform_device *phy3250_d &lpc32xx_gpio_led_device, &lpc32xx_adc_device, &lpc32xx_ohci_device, + &lpc32xx_net_device, }; static struct amba_device *amba_devs[] __initdata = {