From patchwork Sat Nov 17 13:57:19 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Shiyan X-Patchwork-Id: 1759411 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id E46DD3FCAE for ; Sat, 17 Nov 2012 14:06:20 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TZizR-00017U-Lf; Sat, 17 Nov 2012 14:03:22 +0000 Received: from smtp32.i.mail.ru ([94.100.177.92]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TZiu6-0006H7-1X for linux-arm-kernel@lists.infradead.org; Sat, 17 Nov 2012 13:58:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mail.ru; s=mail; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From; bh=tOd+u9G2XAMw4mOx/S3oujqh5M8oZgkz7hzVCkEMlNM=; b=1if8QhC8D9XOSqd9XX7fDBzX3TvkARNYA2kDHJ50uitc0HL02zdnSPD/VpajU1B02m7axfx4LcgXBEpWQCUOmrWEBg5r/6AOONeAOBO35/Yxd3CNHYMPvjd++onjLa8o; Received: from [188.134.40.128] (port=37195 helo=shc.zet) by smtp32.i.mail.ru with esmtpa (envelope-from ) id 1TZiu4-0006q5-Iq; Sat, 17 Nov 2012 17:57:48 +0400 From: Alexander Shiyan To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 13/18] ARM: clps711x: p720t: Special driver for handling NAND memory is removed Date: Sat, 17 Nov 2012 17:57:19 +0400 Message-Id: <1353160644-22446-14-git-send-email-shc_work@mail.ru> X-Mailer: git-send-email 1.7.8.6 In-Reply-To: <1353160644-22446-1-git-send-email-shc_work@mail.ru> References: <1353160644-22446-1-git-send-email-shc_work@mail.ru> X-Spam: Not detected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20121117_085750_534816_0EB4919C X-CRM114-Status: GOOD ( 30.88 ) X-Spam-Score: -2.0 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (shc_work[at]mail.ru) -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Cc: Olof Johansson , Russell King , Alexander Shiyan , Arnd Bergmann X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch provide migration to using "gpio-nand" driver instead of using special driver for handling NAND memory. Signed-off-by: Alexander Shiyan --- arch/arm/mach-clps711x/include/mach/hardware.h | 3 + arch/arm/mach-clps711x/p720t.c | 50 +++++++- drivers/mtd/nand/Kconfig | 6 - drivers/mtd/nand/Makefile | 1 - drivers/mtd/nand/spia.c | 176 ------------------------ 5 files changed, 51 insertions(+), 185 deletions(-) delete mode 100644 drivers/mtd/nand/spia.c diff --git a/arch/arm/mach-clps711x/include/mach/hardware.h b/arch/arm/mach-clps711x/include/mach/hardware.h index 4e273f2..6acf714 100644 --- a/arch/arm/mach-clps711x/include/mach/hardware.h +++ b/arch/arm/mach-clps711x/include/mach/hardware.h @@ -67,6 +67,9 @@ #define CLPS711X_SRAM_BASE CS6_PHYS_BASE #define CLPS711X_SRAM_SIZE (48 * 1024) +#define CLPS711X_SDRAM0_BASE (0xc0000000) +#define CLPS711X_SDRAM1_BASE (0xd0000000) + #if defined (CONFIG_ARCH_EDB7211) /* The extra 8 lines of the keyboard matrix are wired to chip select 3 */ diff --git a/arch/arm/mach-clps711x/p720t.c b/arch/arm/mach-clps711x/p720t.c index 34c8ee9..e25f10e 100644 --- a/arch/arm/mach-clps711x/p720t.c +++ b/arch/arm/mach-clps711x/p720t.c @@ -26,6 +26,8 @@ #include #include #include +#include +#include #include #include @@ -41,7 +43,50 @@ #include "common.h" -#define GPIO_USERLED CLPS711X_GPIO(3, 0) +#define P720T_USERLED CLPS711X_GPIO(3, 0) +#define P720T_NAND_CLE CLPS711X_GPIO(4, 0) +#define P720T_NAND_ALE CLPS711X_GPIO(4, 1) +#define P720T_NAND_NCE CLPS711X_GPIO(4, 2) + +#define P720T_NAND_BASE (CLPS711X_SDRAM1_BASE) + +static struct resource p720t_nand_resource[] __initdata = { + DEFINE_RES_MEM(P720T_NAND_BASE, SZ_4), +}; + +static struct mtd_partition p720t_nand_parts[] __initdata = { + { + .name = "Flash partition 1", + .offset = 0, + .size = SZ_2M, + }, + { + .name = "Flash partition 2", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + }, +}; + +static struct gpio_nand_platdata p720t_nand_pdata __initdata = { + .gpio_rdy = -1, + .gpio_nce = P720T_NAND_NCE, + .gpio_ale = P720T_NAND_ALE, + .gpio_cle = P720T_NAND_CLE, + .gpio_nwp = -1, + .chip_delay = 15, + .parts = p720t_nand_parts, + .num_parts = ARRAY_SIZE(p720t_nand_parts), +}; + +static struct platform_device p720t_nand_pdev __initdata = { + .name = "gpio-nand", + .id = -1, + .resource = p720t_nand_resource, + .num_resources = ARRAY_SIZE(p720t_nand_resource), + .dev = { + .platform_data = &p720t_nand_pdata, + }, +}; static void p720t_lcd_power_set(struct plat_lcd_data *pd, unsigned int power) { @@ -127,7 +172,7 @@ static struct gpio_led p720t_gpio_leds[] = { { .name = "User LED", .default_trigger = "heartbeat", - .gpio = GPIO_USERLED, + .gpio = P720T_USERLED, }, }; @@ -138,6 +183,7 @@ static struct gpio_led_platform_data p720t_gpio_led_pdata __initdata = { static void __init p720t_init(void) { + platform_device_register(&p720t_nand_pdev); platform_device_register_data(&platform_bus, "platform-lcd", 0, &p720t_lcd_power_pdata, sizeof(p720t_lcd_power_pdata)); diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 582c283..721513e 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -93,12 +93,6 @@ config MTD_NAND_GPIO help This enables a GPIO based NAND flash driver. -config MTD_NAND_SPIA - tristate "NAND Flash device on SPIA board" - depends on ARCH_P720T - help - If you had to ask, you don't have one. Say 'N'. - config MTD_NAND_AMS_DELTA tristate "NAND Flash device on Amstrad E3" depends on MACH_AMS_DELTA diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index d2bd10b..eb827a2 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -9,7 +9,6 @@ obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o obj-$(CONFIG_MTD_SM_COMMON) += sm_common.o obj-$(CONFIG_MTD_NAND_CAFE) += cafe_nand.o -obj-$(CONFIG_MTD_NAND_SPIA) += spia.o obj-$(CONFIG_MTD_NAND_AMS_DELTA) += ams-delta.o obj-$(CONFIG_MTD_NAND_DENALI) += denali.o obj-$(CONFIG_MTD_NAND_DENALI_PCI) += denali_pci.o diff --git a/drivers/mtd/nand/spia.c b/drivers/mtd/nand/spia.c deleted file mode 100644 index bef76cd..0000000 --- a/drivers/mtd/nand/spia.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * drivers/mtd/nand/spia.c - * - * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) - * - * - * 10-29-2001 TG change to support hardwarespecific access - * to controllines (due to change in nand.c) - * page_cache added - * - * 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. - * - * Overview: - * This is a device driver for the NAND flash device found on the - * SPIA board which utilizes the Toshiba TC58V64AFT part. This is - * a 64Mibit (8MiB x 8 bits) NAND flash device. - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -/* - * MTD structure for SPIA board - */ -static struct mtd_info *spia_mtd = NULL; - -/* - * Values specific to the SPIA board (used with EP7212 processor) - */ -#define SPIA_IO_BASE 0xd0000000 /* Start of EP7212 IO address space */ -#define SPIA_FIO_BASE 0xf0000000 /* Address where flash is mapped */ -#define SPIA_PEDR 0x0080 /* - * IO offset to Port E data register - * where the CLE, ALE and NCE pins - * are wired to. - */ -#define SPIA_PEDDR 0x00c0 /* - * IO offset to Port E data direction - * register so we can control the IO - * lines. - */ - -/* - * Module stuff - */ - -static int spia_io_base = SPIA_IO_BASE; -static int spia_fio_base = SPIA_FIO_BASE; -static int spia_pedr = SPIA_PEDR; -static int spia_peddr = SPIA_PEDDR; - -module_param(spia_io_base, int, 0); -module_param(spia_fio_base, int, 0); -module_param(spia_pedr, int, 0); -module_param(spia_peddr, int, 0); - -/* - * Define partitions for flash device - */ -static const struct mtd_partition partition_info[] = { - { - .name = "SPIA flash partition 1", - .offset = 0, - .size = 2 * 1024 * 1024}, - { - .name = "SPIA flash partition 2", - .offset = 2 * 1024 * 1024, - .size = 6 * 1024 * 1024} -}; - -#define NUM_PARTITIONS 2 - -/* - * hardware specific access to control-lines - * - * ctrl: - * NAND_CNE: bit 0 -> bit 2 - * NAND_CLE: bit 1 -> bit 0 - * NAND_ALE: bit 2 -> bit 1 - */ -static void spia_hwcontrol(struct mtd_info *mtd, int cmd) -{ - struct nand_chip *chip = mtd->priv; - - if (ctrl & NAND_CTRL_CHANGE) { - void __iomem *addr = spia_io_base + spia_pedr; - unsigned char bits; - - bits = (ctrl & NAND_CNE) << 2; - bits |= (ctrl & NAND_CLE | NAND_ALE) >> 1; - writeb((readb(addr) & ~0x7) | bits, addr); - } - - if (cmd != NAND_CMD_NONE) - writeb(cmd, chip->IO_ADDR_W); -} - -/* - * Main initialization routine - */ -static int __init spia_init(void) -{ - struct nand_chip *this; - - /* Allocate memory for MTD device structure and private data */ - spia_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); - if (!spia_mtd) { - printk("Unable to allocate SPIA NAND MTD device structure.\n"); - return -ENOMEM; - } - - /* Get pointer to private data */ - this = (struct nand_chip *)(&spia_mtd[1]); - - /* Initialize structures */ - memset(spia_mtd, 0, sizeof(struct mtd_info)); - memset(this, 0, sizeof(struct nand_chip)); - - /* Link the private data with the MTD structure */ - spia_mtd->priv = this; - spia_mtd->owner = THIS_MODULE; - - /* - * Set GPIO Port E control register so that the pins are configured - * to be outputs for controlling the NAND flash. - */ - (*(volatile unsigned char *)(spia_io_base + spia_peddr)) = 0x07; - - /* Set address of NAND IO lines */ - this->IO_ADDR_R = (void __iomem *)spia_fio_base; - this->IO_ADDR_W = (void __iomem *)spia_fio_base; - /* Set address of hardware control function */ - this->cmd_ctrl = spia_hwcontrol; - /* 15 us command delay time */ - this->chip_delay = 15; - - /* Scan to find existence of the device */ - if (nand_scan(spia_mtd, 1)) { - kfree(spia_mtd); - return -ENXIO; - } - - /* Register the partitions */ - mtd_device_register(spia_mtd, partition_info, NUM_PARTITIONS); - - /* Return happy */ - return 0; -} - -module_init(spia_init); - -/* - * Clean up routine - */ -static void __exit spia_cleanup(void) -{ - /* Release resources, unregister device */ - nand_release(spia_mtd); - - /* Free the MTD device structure */ - kfree(spia_mtd); -} - -module_exit(spia_cleanup); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Steven J. Hill