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Diffstat (limited to 'target/mips/mikrotik-rb4xx/patches/3.14.54/0001-mtd-add-rb4xx-nand-driver.patch')
-rw-r--r--target/mips/mikrotik-rb4xx/patches/3.14.54/0001-mtd-add-rb4xx-nand-driver.patch351
1 files changed, 0 insertions, 351 deletions
diff --git a/target/mips/mikrotik-rb4xx/patches/3.14.54/0001-mtd-add-rb4xx-nand-driver.patch b/target/mips/mikrotik-rb4xx/patches/3.14.54/0001-mtd-add-rb4xx-nand-driver.patch
deleted file mode 100644
index 8199de991..000000000
--- a/target/mips/mikrotik-rb4xx/patches/3.14.54/0001-mtd-add-rb4xx-nand-driver.patch
+++ /dev/null
@@ -1,351 +0,0 @@
-From 1e692cc0c53202b932eedabd0315107910c5b093 Mon Sep 17 00:00:00 2001
-From: Phil Sutter <phil@nwl.cc>
-Date: Tue, 13 May 2014 00:08:54 +0200
-Subject: [PATCH] mtd: add rb4xx nand driver
-
----
- drivers/mtd/nand/Kconfig | 4 +
- drivers/mtd/nand/Makefile | 1 +
- drivers/mtd/nand/rb4xx_nand.c | 305 ++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 310 insertions(+)
- create mode 100644 drivers/mtd/nand/rb4xx_nand.c
-
-diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
-index 90ff447..bb01309 100644
---- a/drivers/mtd/nand/Kconfig
-+++ b/drivers/mtd/nand/Kconfig
-@@ -510,4 +510,8 @@ config MTD_NAND_XWAY
- Enables support for NAND Flash chips on Lantiq XWAY SoCs. NAND is attached
- to the External Bus Unit (EBU).
-
-+config MTD_NAND_RB4XX
-+ tristate "NAND flash driver for RouterBoard 4xx series"
-+ depends on MTD_NAND && ATH79_MACH_RB4XX
-+
- endif # MTD_NAND
-diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
-index 542b568..e2b5e1c 100644
---- a/drivers/mtd/nand/Makefile
-+++ b/drivers/mtd/nand/Makefile
-@@ -31,6 +31,7 @@ obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
- obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o
- obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o
- obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
-+obj-$(CONFIG_MTD_NAND_RB4XX) += rb4xx_nand.o
- obj-$(CONFIG_MTD_NAND_PASEMI) += pasemi_nand.o
- obj-$(CONFIG_MTD_NAND_ORION) += orion_nand.o
- obj-$(CONFIG_MTD_NAND_FSL_ELBC) += fsl_elbc_nand.o
-diff --git a/drivers/mtd/nand/rb4xx_nand.c b/drivers/mtd/nand/rb4xx_nand.c
-new file mode 100644
-index 0000000..5b9841b
---- /dev/null
-+++ b/drivers/mtd/nand/rb4xx_nand.c
-@@ -0,0 +1,305 @@
-+/*
-+ * NAND flash driver for the MikroTik RouterBoard 4xx series
-+ *
-+ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
-+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
-+ *
-+ * This file was based on the driver for Linux 2.6.22 published by
-+ * MikroTik for their RouterBoard 4xx series devices.
-+ *
-+ * 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/module.h>
-+#include <linux/init.h>
-+#include <linux/mtd/nand.h>
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/platform_device.h>
-+#include <linux/delay.h>
-+#include <linux/io.h>
-+#include <linux/gpio.h>
-+#include <linux/slab.h>
-+
-+#include <asm/mach-ath79/ath79.h>
-+#include <asm/mach-ath79/rb4xx_cpld.h>
-+
-+#define DRV_NAME "rb4xx-nand"
-+#define DRV_VERSION "0.2.0"
-+#define DRV_DESC "NAND flash driver for RouterBoard 4xx series"
-+
-+#define RB4XX_NAND_GPIO_READY 5
-+#define RB4XX_NAND_GPIO_ALE 37
-+#define RB4XX_NAND_GPIO_CLE 38
-+#define RB4XX_NAND_GPIO_NCE 39
-+
-+struct rb4xx_nand_info {
-+ struct nand_chip chip;
-+ struct mtd_info mtd;
-+};
-+
-+/*
-+ * We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader
-+ * will not be able to find the kernel that we load.
-+ */
-+static struct nand_ecclayout rb4xx_nand_ecclayout = {
-+ .eccbytes = 6,
-+ .eccpos = { 8, 9, 10, 13, 14, 15 },
-+ .oobavail = 9,
-+ .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
-+};
-+
-+static struct mtd_partition rb4xx_nand_partitions[] = {
-+ {
-+ .name = "booter",
-+ .offset = 0,
-+ .size = (256 * 1024),
-+ .mask_flags = MTD_WRITEABLE,
-+ },
-+ {
-+ .name = "kernel",
-+ .offset = (256 * 1024),
-+ .size = (4 * 1024 * 1024) - (256 * 1024),
-+ },
-+ {
-+ .name = "rootfs",
-+ .offset = MTDPART_OFS_NXTBLK,
-+ .size = MTDPART_SIZ_FULL,
-+ },
-+};
-+
-+static int rb4xx_nand_dev_ready(struct mtd_info *mtd)
-+{
-+ return gpio_get_value_cansleep(RB4XX_NAND_GPIO_READY);
-+}
-+
-+static void rb4xx_nand_write_cmd(unsigned char cmd)
-+{
-+ unsigned char data = cmd;
-+ int err;
-+
-+ err = rb4xx_cpld_write(&data, 1);
-+ if (err)
-+ pr_err("rb4xx_nand: write cmd failed, err=%d\n", err);
-+}
-+
-+static void rb4xx_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
-+ unsigned int ctrl)
-+{
-+ if (ctrl & NAND_CTRL_CHANGE) {
-+ gpio_set_value_cansleep(RB4XX_NAND_GPIO_CLE,
-+ (ctrl & NAND_CLE) ? 1 : 0);
-+ gpio_set_value_cansleep(RB4XX_NAND_GPIO_ALE,
-+ (ctrl & NAND_ALE) ? 1 : 0);
-+ gpio_set_value_cansleep(RB4XX_NAND_GPIO_NCE,
-+ (ctrl & NAND_NCE) ? 0 : 1);
-+ }
-+
-+ if (cmd != NAND_CMD_NONE)
-+ rb4xx_nand_write_cmd(cmd);
-+}
-+
-+static unsigned char rb4xx_nand_read_byte(struct mtd_info *mtd)
-+{
-+ unsigned char data = 0;
-+ int err;
-+
-+ err = rb4xx_cpld_read(&data, NULL, 1);
-+ if (err) {
-+ pr_err("rb4xx_nand: read data failed, err=%d\n", err);
-+ data = 0xff;
-+ }
-+
-+ return data;
-+}
-+
-+static void rb4xx_nand_write_buf(struct mtd_info *mtd, const unsigned char *buf,
-+ int len)
-+{
-+ int err;
-+
-+ err = rb4xx_cpld_write(buf, len);
-+ if (err)
-+ pr_err("rb4xx_nand: write buf failed, err=%d\n", err);
-+}
-+
-+static void rb4xx_nand_read_buf(struct mtd_info *mtd, unsigned char *buf,
-+ int len)
-+{
-+ int err;
-+
-+ err = rb4xx_cpld_read(buf, NULL, len);
-+ if (err)
-+ pr_err("rb4xx_nand: read buf failed, err=%d\n", err);
-+}
-+
-+static int rb4xx_nand_probe(struct platform_device *pdev)
-+{
-+ struct rb4xx_nand_info *info;
-+ int ret;
-+
-+ printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n");
-+
-+ ret = gpio_request(RB4XX_NAND_GPIO_READY, "NAND RDY");
-+ if (ret) {
-+ dev_err(&pdev->dev, "unable to request gpio %d\n",
-+ RB4XX_NAND_GPIO_READY);
-+ goto err;
-+ }
-+
-+ ret = gpio_direction_input(RB4XX_NAND_GPIO_READY);
-+ if (ret) {
-+ dev_err(&pdev->dev, "unable to set input mode on gpio %d\n",
-+ RB4XX_NAND_GPIO_READY);
-+ goto err_free_gpio_ready;
-+ }
-+
-+ ret = gpio_request(RB4XX_NAND_GPIO_ALE, "NAND ALE");
-+ if (ret) {
-+ dev_err(&pdev->dev, "unable to request gpio %d\n",
-+ RB4XX_NAND_GPIO_ALE);
-+ goto err_free_gpio_ready;
-+ }
-+
-+ ret = gpio_direction_output(RB4XX_NAND_GPIO_ALE, 0);
-+ if (ret) {
-+ dev_err(&pdev->dev, "unable to set output mode on gpio %d\n",
-+ RB4XX_NAND_GPIO_ALE);
-+ goto err_free_gpio_ale;
-+ }
-+
-+ ret = gpio_request(RB4XX_NAND_GPIO_CLE, "NAND CLE");
-+ if (ret) {
-+ dev_err(&pdev->dev, "unable to request gpio %d\n",
-+ RB4XX_NAND_GPIO_CLE);
-+ goto err_free_gpio_ale;
-+ }
-+
-+ ret = gpio_direction_output(RB4XX_NAND_GPIO_CLE, 0);
-+ if (ret) {
-+ dev_err(&pdev->dev, "unable to set output mode on gpio %d\n",
-+ RB4XX_NAND_GPIO_CLE);
-+ goto err_free_gpio_cle;
-+ }
-+
-+ ret = gpio_request(RB4XX_NAND_GPIO_NCE, "NAND NCE");
-+ if (ret) {
-+ dev_err(&pdev->dev, "unable to request gpio %d\n",
-+ RB4XX_NAND_GPIO_NCE);
-+ goto err_free_gpio_cle;
-+ }
-+
-+ ret = gpio_direction_output(RB4XX_NAND_GPIO_NCE, 1);
-+ if (ret) {
-+ dev_err(&pdev->dev, "unable to set output mode on gpio %d\n",
-+ RB4XX_NAND_GPIO_ALE);
-+ goto err_free_gpio_nce;
-+ }
-+
-+ info = kzalloc(sizeof(*info), GFP_KERNEL);
-+ if (!info) {
-+ dev_err(&pdev->dev, "rb4xx-nand: no memory for private data\n");
-+ ret = -ENOMEM;
-+ goto err_free_gpio_nce;
-+ }
-+
-+ info->chip.priv = &info;
-+ info->mtd.priv = &info->chip;
-+ info->mtd.owner = THIS_MODULE;
-+
-+ info->chip.cmd_ctrl = rb4xx_nand_cmd_ctrl;
-+ info->chip.dev_ready = rb4xx_nand_dev_ready;
-+ info->chip.read_byte = rb4xx_nand_read_byte;
-+ info->chip.write_buf = rb4xx_nand_write_buf;
-+ info->chip.read_buf = rb4xx_nand_read_buf;
-+
-+ info->chip.chip_delay = 25;
-+ info->chip.ecc.mode = NAND_ECC_SOFT;
-+
-+ platform_set_drvdata(pdev, info);
-+
-+ ret = nand_scan_ident(&info->mtd, 1, NULL);
-+ if (ret) {
-+ ret = -ENXIO;
-+ goto err_free_info;
-+ }
-+
-+ if (info->mtd.writesize == 512)
-+ info->chip.ecc.layout = &rb4xx_nand_ecclayout;
-+
-+ ret = nand_scan_tail(&info->mtd);
-+ if (ret) {
-+ return -ENXIO;
-+ goto err_set_drvdata;
-+ }
-+
-+ mtd_device_register(&info->mtd, rb4xx_nand_partitions,
-+ ARRAY_SIZE(rb4xx_nand_partitions));
-+ if (ret)
-+ goto err_release_nand;
-+
-+ return 0;
-+
-+err_release_nand:
-+ nand_release(&info->mtd);
-+err_set_drvdata:
-+ platform_set_drvdata(pdev, NULL);
-+err_free_info:
-+ kfree(info);
-+err_free_gpio_nce:
-+ gpio_free(RB4XX_NAND_GPIO_NCE);
-+err_free_gpio_cle:
-+ gpio_free(RB4XX_NAND_GPIO_CLE);
-+err_free_gpio_ale:
-+ gpio_free(RB4XX_NAND_GPIO_ALE);
-+err_free_gpio_ready:
-+ gpio_free(RB4XX_NAND_GPIO_READY);
-+err:
-+ return ret;
-+}
-+
-+static int rb4xx_nand_remove(struct platform_device *pdev)
-+{
-+ struct rb4xx_nand_info *info = platform_get_drvdata(pdev);
-+
-+ nand_release(&info->mtd);
-+ platform_set_drvdata(pdev, NULL);
-+ kfree(info);
-+ gpio_free(RB4XX_NAND_GPIO_NCE);
-+ gpio_free(RB4XX_NAND_GPIO_CLE);
-+ gpio_free(RB4XX_NAND_GPIO_ALE);
-+ gpio_free(RB4XX_NAND_GPIO_READY);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver rb4xx_nand_driver = {
-+ .probe = rb4xx_nand_probe,
-+ .remove = rb4xx_nand_remove,
-+ .driver = {
-+ .name = DRV_NAME,
-+ .owner = THIS_MODULE,
-+ },
-+};
-+
-+static int __init rb4xx_nand_init(void)
-+{
-+ return platform_driver_register(&rb4xx_nand_driver);
-+}
-+
-+static void __exit rb4xx_nand_exit(void)
-+{
-+ platform_driver_unregister(&rb4xx_nand_driver);
-+}
-+
-+module_init(rb4xx_nand_init);
-+module_exit(rb4xx_nand_exit);
-+
-+MODULE_DESCRIPTION(DRV_DESC);
-+MODULE_VERSION(DRV_VERSION);
-+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
-+MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
-+MODULE_LICENSE("GPL v2");
---
-1.8.5.3
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-18 08:34:27 +0000