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-rw-r--r--packages/linux/compulab-pxa270-2.6.20/0004-nand-driver.patch324
1 files changed, 0 insertions, 324 deletions
diff --git a/packages/linux/compulab-pxa270-2.6.20/0004-nand-driver.patch b/packages/linux/compulab-pxa270-2.6.20/0004-nand-driver.patch
deleted file mode 100644
index f8e05c3c22..0000000000
--- a/packages/linux/compulab-pxa270-2.6.20/0004-nand-driver.patch
+++ /dev/null
@@ -1,324 +0,0 @@
-From nobody Mon Sep 17 00:00:00 2001
-From: Cliff Brake <cbrake@happy.dev.bec-systems.com>
-Date: Tue Apr 3 11:38:59 2007 -0400
-Subject: [PATCH] nand driver
-
-2.6.20 NAND flash driver for cm-x270
-
----
-
- drivers/mtd/nand/Kconfig | 4 +
- drivers/mtd/nand/Makefile | 1
- drivers/mtd/nand/cmx270-nand.c | 271 ++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 276 insertions(+), 0 deletions(-)
- create mode 100644 drivers/mtd/nand/cmx270-nand.c
-
-base a34beb5936e5819d8b2d51b153434825700463ef
-last deaa2960bd8fb1f706a935cd7a87321977e6f568
-diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
-index 358f55a82dbe4ebb73b1b0ee460063a6145e3f0e..c80272bcc69b6e13ab0c4403e4635a8a4076dc6c 100644
---- a/drivers/mtd/nand/Kconfig
-+++ b/drivers/mtd/nand/Kconfig
-@@ -247,6 +247,10 @@ config MTD_NAND_AT91
- help
- Enables support for NAND Flash / Smart Media Card interface
- on Atmel AT91 processors.
-+
-+config MTD_NAND_CM_X270
-+ tristate "Support for NAND Flash on CompuLab CM-X270"
-+ depends on MTD_NAND && ARCH_PXA
-
- config MTD_NAND_NANDSIM
- tristate "Support for NAND Flash Simulator"
-diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
-index f7a53f0b70177451680402a2c2cce4c98991cd6e..d5abbca6d5ae18e287af0b02075f99838d35dc85 100644
---- a/drivers/mtd/nand/Makefile
-+++ b/drivers/mtd/nand/Makefile
-@@ -24,6 +24,7 @@ obj-$(CONFIG_MTD_NAND_NANDSIM) += nandsim.o
- obj-$(CONFIG_MTD_NAND_CS553X) += cs553x_nand.o
- obj-$(CONFIG_MTD_NAND_NDFC) += ndfc.o
- obj-$(CONFIG_MTD_NAND_AT91) += at91_nand.o
-+obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270-nand.o
-
- nand-objs := nand_base.o nand_bbt.o
- cafe_nand-objs := cafe.o cafe_ecc.o
-diff --git a/drivers/mtd/nand/cmx270-nand.c b/drivers/mtd/nand/cmx270-nand.c
-new file mode 100644
-index 0000000000000000000000000000000000000000..1cd531e610dee846e246b4b1d56bb4119939682b
---- /dev/null
-+++ b/drivers/mtd/nand/cmx270-nand.c
-@@ -0,0 +1,271 @@
-+/*
-+ * drivers/mtd/nand/cmx270-nand.c
-+ *
-+ * Copyright (C) 2005 Compulab, Ltd. (mike@compulab.co.il)
-+ * 2007 BEC Systems, LLC (cbrake@bec-systems.com)
-+ * - updated to 2.6.20 NAND API
-+ *
-+ * Derived from drivers/mtd/nand/h1910.c
-+ * Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
-+ * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
-+ *
-+ *
-+ * 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
-+ * CM-X270 board.
-+ */
-+
-+#include <linux/slab.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/nand.h>
-+#include <linux/mtd/partitions.h>
-+
-+#include <asm/io.h>
-+#include <asm/irq.h>
-+#include <asm/arch/hardware.h>
-+#include <asm/arch/pxa-regs.h>
-+
-+#define GPIO_NAND_CS (11)
-+#define GPIO_NAND_RB (89)
-+
-+#define DRAIN_WB() \
-+ do { \
-+ unsigned char dummy; \
-+ asm volatile ("mcr p15, 0, r0, c7, c10, 4":::"r0"); \
-+ dummy=*((volatile unsigned char*)UNCACHED_ADDR); \
-+ } while(0);
-+
-+/*
-+ * MTD structure for CM-X270 board
-+ */
-+static struct mtd_info *cmx270_nand_mtd = NULL;
-+
-+/*
-+ * Module stuff
-+ */
-+
-+#ifdef CONFIG_MTD_PARTITIONS
-+/*
-+ * Define static partitions for flash device
-+ */
-+static struct mtd_partition partition_info[] = {
-+ {
-+ .name = "app",
-+ .offset = 0,
-+ .size = 64*1024*1024
-+ },
-+ {
-+ .name = "data",
-+ .offset = MTDPART_OFS_APPEND,
-+ .size = MTDPART_SIZ_FULL
-+ }
-+};
-+
-+#define NUM_PARTITIONS ARRAY_SIZE(partition_info)
-+
-+#endif
-+
-+
-+static u_char cmx270_read_byte(struct mtd_info *mtd)
-+{
-+ struct nand_chip *this = mtd->priv;
-+ return (readl(this->IO_ADDR_R) >> 16);
-+}
-+
-+static void cmx270_write_byte(struct mtd_info *mtd, u_char byte)
-+{
-+ struct nand_chip *this = mtd->priv;
-+ writel((byte << 16), this->IO_ADDR_W);
-+}
-+
-+static void cmx270_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
-+{
-+ int i;
-+ struct nand_chip *this = mtd->priv;
-+
-+ for (i=0; i<len; i++) {
-+ writel((*buf++ << 16), this->IO_ADDR_W);
-+ }
-+}
-+
-+static void cmx270_read_buf(struct mtd_info *mtd, u_char *buf, int len)
-+{
-+ int i;
-+ struct nand_chip *this = mtd->priv;
-+
-+ for (i=0; i<len; i++) {
-+ *buf++ = readl(this->IO_ADDR_R) >> 16;
-+ }
-+}
-+
-+static int cmx270_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
-+{
-+ int i;
-+ struct nand_chip *this = mtd->priv;
-+
-+ for (i=0; i<len; i++) {
-+ if ( buf[i] != (u_char)(readl(this->IO_ADDR_R) >> 16) )
-+ return -EFAULT;
-+ }
-+
-+ return 0;
-+}
-+
-+static inline void nand_cs_on(void)
-+{
-+ GPCR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
-+}
-+
-+static void nand_cs_off(void)
-+{
-+ DRAIN_WB();
-+
-+ GPSR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
-+}
-+
-+/*
-+ * hardware specific access to control-lines
-+ *
-+ * NAND_NCE: bit 0 - GPIO_NAND_CS
-+ * NAND_CLE: bit 1 - address bit 2
-+ * NAND_ALE: bit 2 - address bit 3
-+ */
-+static void cmx270_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
-+{
-+ struct nand_chip* chip = mtd->priv;
-+
-+ DRAIN_WB();
-+
-+ if (ctrl & NAND_CTRL_CHANGE) {
-+ if (ctrl & NAND_NCE) nand_cs_on();
-+ else nand_cs_off();
-+ }
-+
-+
-+ if (cmd != NAND_CMD_NONE) {
-+ writel(cmd << 16, (unsigned int)(chip->IO_ADDR_W) | ((ctrl & 0x6) << 1 ));
-+ }
-+
-+ DRAIN_WB();
-+}
-+
-+/*
-+ * read device ready pin
-+ */
-+static int cmx270_device_ready(struct mtd_info *mtd)
-+{
-+ DRAIN_WB();
-+ return ( GPLR(GPIO_NAND_RB) & GPIO_bit(GPIO_NAND_RB) );
-+}
-+
-+/*
-+ * Main initialization routine
-+ */
-+static int __init cmx270_init (void)
-+{
-+ struct nand_chip *this;
-+ const char *part_type = 0;
-+ int mtd_parts_nb = 0;
-+ struct mtd_partition *mtd_parts = 0;
-+ static unsigned int nandaddr = 0;
-+
-+
-+ /* Allocate memory for MTD device structure and private data */
-+ cmx270_nand_mtd = kmalloc(sizeof(struct mtd_info) +
-+ sizeof(struct nand_chip),
-+ GFP_KERNEL);
-+ if (!cmx270_nand_mtd) {
-+ printk("Unable to allocate CM-X270 NAND MTD device structure.\n");
-+ return -ENOMEM;
-+ }
-+
-+ nandaddr = (volatile unsigned int)ioremap(PXA_CS1_PHYS, 100);
-+
-+ /* Get pointer to private data */
-+ this = (struct nand_chip *) (&cmx270_nand_mtd[1]);
-+
-+ /* Initialize structures */
-+ memset((char *) cmx270_nand_mtd, 0, sizeof(struct mtd_info));
-+ memset((char *) this, 0, sizeof(struct nand_chip));
-+
-+ /* Link the private data with the MTD structure */
-+ cmx270_nand_mtd->priv = this;
-+ cmx270_nand_mtd->owner = THIS_MODULE;
-+
-+ /* insert callbacks */
-+ this->IO_ADDR_R = (void __iomem *)nandaddr;
-+ this->IO_ADDR_W = (void __iomem *)nandaddr;
-+ this->cmd_ctrl = cmx270_hwcontrol;
-+/* this->dev_ready = cmx270_device_ready; /\* unknown whether that was correct or not so we will just do it like this *\/ */
-+
-+ /* 15 us command delay time */
-+ this->chip_delay = 50;
-+ this->ecc.mode = NAND_ECC_SOFT;
-+
-+ /* read/write functions */
-+ this->read_byte = cmx270_read_byte;
-+ //this->write_byte = cmx270_write_byte;
-+ this->read_buf = cmx270_read_buf;
-+ this->write_buf = cmx270_write_buf;
-+ this->verify_buf = cmx270_verify_buf;
-+
-+ /* Scan to find existence of the device */
-+ if (nand_scan (cmx270_nand_mtd, 1)) {
-+ printk(KERN_NOTICE "No NAND device - returning -ENXIO\n");
-+ iounmap((void*)nandaddr);
-+ kfree (cmx270_nand_mtd);
-+ return -ENXIO;
-+ }
-+
-+//#ifdef CONFIG_MTD_CMDLINE_PARTS
-+#if 0
-+ mtd_parts_nb = parse_cmdline_partitions(cmx270_nand_mtd, &mtd_parts,
-+ "cmx270");
-+ if (mtd_parts_nb > 0)
-+ part_type = "command line";
-+ else
-+ mtd_parts_nb = 0;
-+#endif
-+ if (mtd_parts_nb == 0)
-+ {
-+ mtd_parts = partition_info;
-+ mtd_parts_nb = NUM_PARTITIONS;
-+ part_type = "static";
-+ }
-+
-+ /* Register the partitions */
-+ printk(KERN_NOTICE "Using %s partition definition\n", part_type);
-+ add_mtd_partitions(cmx270_nand_mtd, mtd_parts, mtd_parts_nb);
-+
-+ /* Return happy */
-+ return 0;
-+}
-+module_init(cmx270_init);
-+
-+/*
-+ * Clean up routine
-+ */
-+static void __exit cmx270_cleanup (void)
-+{
-+ struct nand_chip *this;
-+
-+ this = (struct nand_chip *) (&cmx270_nand_mtd[1]);
-+ iounmap(this->IO_ADDR_R);
-+
-+ /* Release resources, unregister device */
-+ nand_release (cmx270_nand_mtd);
-+
-+ /* Free the MTD device structure */
-+ kfree (cmx270_nand_mtd);
-+}
-+module_exit(cmx270_cleanup);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Mike Rapoport <mike at compulab dot co dot il>");
-+MODULE_DESCRIPTION("NAND flash driver for Compulab CM-X270 Core");
---
-1.4.4.4
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-03 23:26:57 +0000