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ar71xx: Add kernel 4.9 support

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This add support for kernel 4.9 to the ar71xx target.
It was compile tested with the generic, NAND and mikrotik subtarget.
Multiple members of the community tested it on their boards and did not
report any major problem so far.

Especially the NAND part received some changes to adapt to the new
kernel APIs. The serial driver hack used for the Arduino Yun was not
ported because the kernel changed there a lot.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Hauke Mehrtens
2017-10-03 18:02:59 +02:00
parent 2909a4b78e
commit 7bbf4117c6
106 changed files with 8329 additions and 73 deletions
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56
target/linux/ar71xx/files/drivers/mtd/nand/rb91x_nand.c
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@@ -19,6 +19,7 @@
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/platform_data/rb91x_nand.h>
#include <linux/version.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include <asm/mach-ath79/ath79.h>
@@ -56,6 +57,7 @@ static inline struct rb91x_nand_info *mtd_to_rbinfo(struct mtd_info *mtd)
return container_of(mtd, struct rb91x_nand_info, mtd);
}
#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.
@@ -67,6 +69,56 @@ static struct nand_ecclayout rb91x_nand_ecclayout = {
.oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
};
#else
static int rb91x_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 rb91x_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 rb91x_nand_ecclayout_ops = {
.ecc = rb91x_ooblayout_ecc,
.free = rb91x_ooblayout_free,
};
#endif /* < 4.6 */
static struct mtd_partition rb91x_nand_partitions[] = {
{
.name = "booter",
@@ -334,7 +386,11 @@ static int rb91x_nand_probe(struct platform_device *pdev)
return ret;
if (rbni->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);
#endif
ret = nand_scan_tail(&rbni->mtd);
if (ret)