bcm53xx: backport spi-nor patches from 3.18-rc1

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 43030

1 files changed, 106 insertions, 0 deletions

diff --git a/target/linux/bcm53xx/patches-3.14/002-mtd-spi-nor-from-3.18.patch b/target/linux/bcm53xx/patches-3.14/002-mtd-spi-nor-from-3.18.patch
new file mode 100644
index 0000000000..1d837032d6
--- /dev/null
+++ b/target/linux/bcm53xx/patches-3.14/002-mtd-spi-nor-from-3.18.patch
@@ -0,0 +1,106 @@
+--- a/drivers/mtd/spi-nor/spi-nor.c
++++ b/drivers/mtd/spi-nor/spi-nor.c
+@@ -611,6 +611,7 @@ const struct spi_device_id spi_nor_ids[]
+ 	{ "m25px32-s0", INFO(0x207316,  0, 64 * 1024, 64, SECT_4K) },
+ 	{ "m25px32-s1", INFO(0x206316,  0, 64 * 1024, 64, SECT_4K) },
+ 	{ "m25px64",    INFO(0x207117,  0, 64 * 1024, 128, 0) },
++	{ "m25px80",    INFO(0x207114,  0, 64 * 1024, 16, 0) },
+ 
+ 	/* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
+ 	{ "w25x10", INFO(0xef3011, 0, 64 * 1024,  2,  SECT_4K) },
+@@ -623,7 +624,6 @@ const struct spi_device_id spi_nor_ids[]
+ 	{ "w25q32dw", INFO(0xef6016, 0, 64 * 1024,  64, SECT_4K) },
+ 	{ "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },
+ 	{ "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
+-	{ "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
+ 	{ "w25q80", INFO(0xef5014, 0, 64 * 1024,  16, SECT_4K) },
+ 	{ "w25q80bl", INFO(0xef4014, 0, 64 * 1024,  16, SECT_4K) },
+ 	{ "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
+@@ -671,11 +671,6 @@ static const struct spi_device_id *spi_n
+ 	return ERR_PTR(-ENODEV);
+ }
+ 
+-static const struct spi_device_id *jedec_probe(struct spi_nor *nor)
+-{
+-	return nor->read_id(nor);
+-}
+-
+ static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len,
+ 			size_t *retlen, u_char *buf)
+ {
+@@ -920,7 +915,6 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 			enum read_mode mode)
+ {
+ 	struct flash_info		*info;
+-	struct flash_platform_data	*data;
+ 	struct device *dev = nor->dev;
+ 	struct mtd_info *mtd = nor->mtd;
+ 	struct device_node *np = dev->of_node;
+@@ -931,34 +925,12 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 	if (ret)
+ 		return ret;
+ 
+-	/* Platform data helps sort out which chip type we have, as
+-	 * well as how this board partitions it.  If we don't have
+-	 * a chip ID, try the JEDEC id commands; they'll work for most
+-	 * newer chips, even if we don't recognize the particular chip.
+-	 */
+-	data = dev_get_platdata(dev);
+-	if (data && data->type) {
+-		const struct spi_device_id *plat_id;
+-
+-		for (i = 0; i < ARRAY_SIZE(spi_nor_ids) - 1; i++) {
+-			plat_id = &spi_nor_ids[i];
+-			if (strcmp(data->type, plat_id->name))
+-				continue;
+-			break;
+-		}
+-
+-		if (i < ARRAY_SIZE(spi_nor_ids) - 1)
+-			id = plat_id;
+-		else
+-			dev_warn(dev, "unrecognized id %s\n", data->type);
+-	}
+-
+ 	info = (void *)id->driver_data;
+ 
+ 	if (info->jedec_id) {
+ 		const struct spi_device_id *jid;
+ 
+-		jid = jedec_probe(nor);
++		jid = nor->read_id(nor);
+ 		if (IS_ERR(jid)) {
+ 			return PTR_ERR(jid);
+ 		} else if (jid != id) {
+@@ -990,11 +962,8 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 		write_sr(nor, 0);
+ 	}
+ 
+-	if (data && data->name)
+-		mtd->name = data->name;
+-	else
++	if (!mtd->name)
+ 		mtd->name = dev_name(dev);
+-
+ 	mtd->type = MTD_NORFLASH;
+ 	mtd->writesize = 1;
+ 	mtd->flags = MTD_CAP_NORFLASH;
+@@ -1018,6 +987,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 	    nor->wait_till_ready == spi_nor_wait_till_ready)
+ 		nor->wait_till_ready = spi_nor_wait_till_fsr_ready;
+ 
++#ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS
+ 	/* prefer "small sector" erase if possible */
+ 	if (info->flags & SECT_4K) {
+ 		nor->erase_opcode = SPINOR_OP_BE_4K;
+@@ -1025,7 +995,9 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 	} else if (info->flags & SECT_4K_PMC) {
+ 		nor->erase_opcode = SPINOR_OP_BE_4K_PMC;
+ 		mtd->erasesize = 4096;
+-	} else {
++	} else
++#endif
++	{
+ 		nor->erase_opcode = SPINOR_OP_SE;
+ 		mtd->erasesize = info->sector_size;
+ 	}