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ar71xx: fix mikrotik routerboard nand driver issues with linux 4.9

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The mtd device is now embedded inside the nand chip data structure

Signed-off-by: Felix Fietkau <nbd@nbd.name>
master
Felix Fietkau 7 years ago
parent 65da6f9ca1
commit 7c09fa4a74
3 changed files with 108 additions and 27 deletions
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  1. 48
      target/linux/ar71xx/files/drivers/mtd/nand/rb4xx_nand.c
  2. 43
      target/linux/ar71xx/files/drivers/mtd/nand/rb750_nand.c
  3. 44
      target/linux/ar71xx/files/drivers/mtd/nand/rb91x_nand.c

48
target/linux/ar71xx/files/drivers/mtd/nand/rb4xx_nand.c
Unescape View File

@ -39,9 +39,31 @@
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
@ -191,6 +213,7 @@ static void rb4xx_nand_read_buf(struct mtd_info *mtd, unsigned char *buf,
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");
@ -259,8 +282,12 @@ static int rb4xx_nand_probe(struct platform_device *pdev)
}
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;
@ -270,30 +297,33 @@ static int rb4xx_nand_probe(struct platform_device *pdev)
info->chip.chip_delay = 25;
info->chip.ecc.mode = NAND_ECC_SOFT;
#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, NULL);
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(&info->mtd, &rb4xx_nand_ecclayout_ops);
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;
}
mtd_device_register(&info->mtd, rb4xx_nand_partitions,
mtd_device_register(mtd, rb4xx_nand_partitions,
ARRAY_SIZE(rb4xx_nand_partitions));
if (ret)
goto err_release_nand;
@ -301,7 +331,7 @@ static int rb4xx_nand_probe(struct platform_device *pdev)
return 0;
err_release_nand:
nand_release(&info->mtd);
nand_release(mtd);
err_set_drvdata:
platform_set_drvdata(pdev, NULL);
err_free_info:
@ -322,7 +352,7 @@ 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);

43
target/linux/ar71xx/files/drivers/mtd/nand/rb750_nand.c
Unescape View File

@ -41,13 +41,30 @@
struct rb750_nand_info {
struct nand_chip chip;
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
struct mtd_info mtd;
#endif
struct rb7xx_nand_platform_data *pdata;
};
static inline struct rb750_nand_info *mtd_to_rbinfo(struct mtd_info *mtd)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
return container_of(mtd, struct rb750_nand_info, mtd);
#else
struct nand_chip *chip = mtd_to_nand(mtd);
return container_of(chip, struct rb750_nand_info, chip);
#endif
}
static struct mtd_info *rbinfo_to_mtd(struct rb750_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)
@ -304,6 +321,7 @@ static int rb750_nand_probe(struct platform_device *pdev)
{
struct rb750_nand_info *info;
struct rb7xx_nand_platform_data *pdata;
struct mtd_info *mtd;
int ret;
printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n");
@ -317,8 +335,12 @@ static int rb750_nand_probe(struct platform_device *pdev)
return -ENOMEM;
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.select_chip = rb750_nand_select_chip;
info->chip.cmd_ctrl = rb750_nand_cmd_ctrl;
@ -329,6 +351,9 @@ static int rb750_nand_probe(struct platform_device *pdev)
info->chip.chip_delay = 25;
info->chip.ecc.mode = NAND_ECC_SOFT;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)
info->chip.ecc.algo = NAND_ECC_HAMMING;
#endif
info->chip.options = NAND_NO_SUBPAGE_WRITE;
info->pdata = pdata;
@ -337,26 +362,26 @@ static int rb750_nand_probe(struct platform_device *pdev)
rb750_nand_gpio_init(info);
ret = nand_scan_ident(&info->mtd, 1, NULL);
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 = &rb750_nand_ecclayout;
#else
mtd_set_ooblayout(&info->mtd, &rb750_nand_ecclayout_ops);
mtd_set_ooblayout(mtd, &rb750_nand_ecclayout_ops);
#endif
ret = nand_scan_tail(&info->mtd);
ret = nand_scan_tail(mtd);
if (ret) {
return -ENXIO;
goto err_set_drvdata;
}
ret = mtd_device_register(&info->mtd, rb750_nand_partitions,
ret = mtd_device_register(mtd, rb750_nand_partitions,
ARRAY_SIZE(rb750_nand_partitions));
if (ret)
goto err_release_nand;
@ -364,7 +389,7 @@ static int rb750_nand_probe(struct platform_device *pdev)
return 0;
err_release_nand:
nand_release(&info->mtd);
nand_release(mtd);
err_set_drvdata:
platform_set_drvdata(pdev, NULL);
err_free_info:
@ -376,7 +401,7 @@ static int rb750_nand_remove(struct platform_device *pdev)
{
struct rb750_nand_info *info = platform_get_drvdata(pdev);
nand_release(&info->mtd);
nand_release(rbinfo_to_mtd(info));
platform_set_drvdata(pdev, NULL);
kfree(info);

44
target/linux/ar71xx/files/drivers/mtd/nand/rb91x_nand.c
Unescape View File

@ -40,7 +40,9 @@
struct rb91x_nand_info {
struct nand_chip chip;
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
struct mtd_info mtd;
#endif
struct device *dev;
int gpio_nce;
@ -54,9 +56,25 @@ struct rb91x_nand_info {
static inline struct rb91x_nand_info *mtd_to_rbinfo(struct mtd_info *mtd)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
return container_of(mtd, struct rb91x_nand_info, mtd);
#else
struct nand_chip *chip = mtd_to_nand(mtd);
return container_of(chip, struct rb91x_nand_info, chip);
#endif
}
static struct mtd_info *rbinfo_to_mtd(struct rb91x_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
@ -340,6 +358,7 @@ static int rb91x_nand_probe(struct platform_device *pdev)
{
struct rb91x_nand_info *rbni;
struct rb91x_nand_platform_data *pdata;
struct mtd_info *mtd;
int ret;
pr_info(DRV_DESC "\n");
@ -362,8 +381,12 @@ static int rb91x_nand_probe(struct platform_device *pdev)
rbni->gpio_nle = pdata->gpio_nle;
rbni->chip.priv = &rbni;
rbni->mtd.priv = &rbni->chip;
rbni->mtd.owner = THIS_MODULE;
mtd = rbinfo_to_mtd(rbni);
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
mtd->priv = &rbni->chip;
#endif
mtd->owner = THIS_MODULE;
rbni->chip.cmd_ctrl = rb91x_nand_cmd_ctrl;
rbni->chip.dev_ready = rb91x_nand_dev_ready;
@ -373,6 +396,9 @@ static int rb91x_nand_probe(struct platform_device *pdev)
rbni->chip.chip_delay = 25;
rbni->chip.ecc.mode = NAND_ECC_SOFT;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)
rbni->chip.ecc.algo = NAND_ECC_HAMMING;
#endif
rbni->chip.options = NAND_NO_SUBPAGE_WRITE;
platform_set_drvdata(pdev, rbni);
@ -381,22 +407,22 @@ static int rb91x_nand_probe(struct platform_device *pdev)
if (ret)
return ret;
ret = nand_scan_ident(&rbni->mtd, 1, NULL);
ret = nand_scan_ident(mtd, 1, NULL);
if (ret)
return ret;
if (rbni->mtd.writesize == 512)
if (mtd->writesize == 512)
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
rbni->chip.ecc.layout = &rb91x_nand_ecclayout;
#else
mtd_set_ooblayout(&rbni->mtd, &rb91x_nand_ecclayout_ops);
mtd_set_ooblayout(mtd, &rb91x_nand_ecclayout_ops);
#endif
ret = nand_scan_tail(&rbni->mtd);
ret = nand_scan_tail(mtd);
if (ret)
return ret;
ret = mtd_device_register(&rbni->mtd, rb91x_nand_partitions,
ret = mtd_device_register(mtd, rb91x_nand_partitions,
ARRAY_SIZE(rb91x_nand_partitions));
if (ret)
goto err_release_nand;
@ -404,7 +430,7 @@ static int rb91x_nand_probe(struct platform_device *pdev)
return 0;
err_release_nand:
nand_release(&rbni->mtd);
nand_release(mtd);
return ret;
}
@ -412,7 +438,7 @@ static int rb91x_nand_remove(struct platform_device *pdev)
{
struct rb91x_nand_info *info = platform_get_drvdata(pdev);
nand_release(&info->mtd);
nand_release(rbinfo_to_mtd(info));
return 0;
}

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