* 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/io.h>
#include <linux/gpio.h>
#include <linux/slab.h>
+#include <linux/version.h>
-#include <asm/mach-ar71xx/ar71xx.h>
-#include <asm/mach-ar71xx/rb4xx_cpld.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"
struct rb4xx_nand_info {
struct nand_chip chip;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
struct mtd_info mtd;
+#endif
};
+static inline struct rb4xx_nand_info *mtd_to_rbinfo(struct mtd_info *mtd)
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
+ return container_of(mtd, struct rb4xx_nand_info, mtd);
+#else
+ struct nand_chip *chip = mtd_to_nand(mtd);
+
+ return container_of(chip, struct rb4xx_nand_info, chip);
+#endif
+}
+
+static struct mtd_info *rbinfo_to_mtd(struct rb4xx_nand_info *nfc)
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
+ return &nfc->mtd;
+#else
+ return nand_to_mtd(&nfc->chip);
+#endif
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
/*
* 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.
.oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
};
+#else
+
+static int rb4xx_ooblayout_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ switch (section) {
+ case 0:
+ oobregion->offset = 8;
+ oobregion->length = 3;
+ return 0;
+ case 1:
+ oobregion->offset = 13;
+ oobregion->length = 3;
+ return 0;
+ default:
+ return -ERANGE;
+ }
+}
+
+static int rb4xx_ooblayout_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ switch (section) {
+ case 0:
+ oobregion->offset = 0;
+ oobregion->length = 4;
+ return 0;
+ case 1:
+ oobregion->offset = 4;
+ oobregion->length = 1;
+ return 0;
+ case 2:
+ oobregion->offset = 6;
+ oobregion->length = 2;
+ return 0;
+ case 3:
+ oobregion->offset = 11;
+ oobregion->length = 2;
+ return 0;
+ default:
+ return -ERANGE;
+ }
+}
+
+static const struct mtd_ooblayout_ops rb4xx_nand_ecclayout_ops = {
+ .ecc = rb4xx_ooblayout_ecc,
+ .free = rb4xx_ooblayout_free,
+};
+#endif /* < 4.6 */
+
static struct mtd_partition rb4xx_nand_partitions[] = {
{
.name = "booter",
{
.name = "kernel",
.offset = (256 * 1024),
- .size = (6 * 1024 * 1024) - (256 * 1024),
+ .size = (4 * 1024 * 1024) - (256 * 1024),
},
{
- .name = "rootfs",
+ .name = "ubi",
.offset = MTDPART_OFS_NXTBLK,
.size = MTDPART_SIZ_FULL,
},
unsigned char data = 0;
int err;
- err = rb4xx_cpld_read(&data, NULL, 1);
+ err = rb4xx_cpld_read(&data, 1);
if (err) {
pr_err("rb4xx_nand: read data failed, err=%d\n", err);
data = 0xff;
{
int err;
- err = rb4xx_cpld_read(buf, NULL, len);
+ err = rb4xx_cpld_read(buf, len);
if (err)
pr_err("rb4xx_nand: read buf failed, err=%d\n", err);
}
-static int __init rb4xx_nand_probe(struct platform_device *pdev)
+static int rb4xx_nand_probe(struct platform_device *pdev)
{
struct rb4xx_nand_info *info;
+ struct mtd_info *mtd;
int ret;
printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n");
}
info->chip.priv = &info;
- info->mtd.priv = &info->chip;
- info->mtd.owner = THIS_MODULE;
+ mtd = rbinfo_to_mtd(info);
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
+ mtd->priv = &info->chip;
+#endif
+ 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;
-#if 0
- info->chip.verify_buf = rb4xx_nand_verify_buf;
-#endif
info->chip.chip_delay = 25;
info->chip.ecc.mode = NAND_ECC_SOFT;
- info->chip.options |= NAND_NO_AUTOINCR;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)
+ info->chip.ecc.algo = NAND_ECC_HAMMING;
+#endif
+ info->chip.options = NAND_NO_SUBPAGE_WRITE;
platform_set_drvdata(pdev, info);
- ret = nand_scan_ident(&info->mtd, 1);
+ ret = nand_scan_ident(mtd, 1, NULL);
if (ret) {
ret = -ENXIO;
goto err_free_info;
}
- if (info->mtd.writesize == 512)
+ if (mtd->writesize == 512)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
info->chip.ecc.layout = &rb4xx_nand_ecclayout;
+#else
+ mtd_set_ooblayout(mtd, &rb4xx_nand_ecclayout_ops);
+#endif
- ret = nand_scan_tail(&info->mtd);
+ ret = nand_scan_tail(mtd);
if (ret) {
return -ENXIO;
goto err_set_drvdata;
}
-#ifdef CONFIG_MTD_PARTITIONS
- ret = add_mtd_partitions(&info->mtd, rb4xx_nand_partitions,
+ mtd_device_register(mtd, rb4xx_nand_partitions,
ARRAY_SIZE(rb4xx_nand_partitions));
-#else
- ret = add_mtd_device(&info->mtd);
-#endif
if (ret)
goto err_release_nand;
return 0;
err_release_nand:
- nand_release(&info->mtd);
+ nand_release(mtd);
err_set_drvdata:
platform_set_drvdata(pdev, NULL);
err_free_info:
return ret;
}
-static int __devexit rb4xx_nand_remove(struct platform_device *pdev)
+static int rb4xx_nand_remove(struct platform_device *pdev)
{
struct rb4xx_nand_info *info = platform_get_drvdata(pdev);
- nand_release(&info->mtd);
+ nand_release(rbinfo_to_mtd(info));
platform_set_drvdata(pdev, NULL);
kfree(info);
gpio_free(RB4XX_NAND_GPIO_NCE);
static struct platform_driver rb4xx_nand_driver = {
.probe = rb4xx_nand_probe,
- .remove = __devexit_p(rb4xx_nand_remove),
+ .remove = rb4xx_nand_remove,
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
projects / openwrt / openwrt.git / blobdiff