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-rw-r--r--target/linux/mediatek/patches-4.4/0072-mtd-backport-v4.7-0day-patches-from-Boris.patch62
1 files changed, 62 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.4/0072-mtd-backport-v4.7-0day-patches-from-Boris.patch b/target/linux/mediatek/patches-4.4/0072-mtd-backport-v4.7-0day-patches-from-Boris.patch
index e4c8bc36e5..8caa8e2f4f 100644
--- a/target/linux/mediatek/patches-4.4/0072-mtd-backport-v4.7-0day-patches-from-Boris.patch
+++ b/target/linux/mediatek/patches-4.4/0072-mtd-backport-v4.7-0day-patches-from-Boris.patch
@@ -5416,3 +5416,65 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
/* Initialise write buffer */
init_rwsem(&c->wbuf_sem);
+--- a/include/linux/mtd/spi-nor.h
++++ b/include/linux/mtd/spi-nor.h
+@@ -85,6 +85,7 @@
+ #define SR_BP0 BIT(2) /* Block protect 0 */
+ #define SR_BP1 BIT(3) /* Block protect 1 */
+ #define SR_BP2 BIT(4) /* Block protect 2 */
++#define SR_TB BIT(5) /* Top/Bottom protect */
+ #define SR_SRWD BIT(7) /* SR write protect */
+
+ #define SR_QUAD_EN_MX BIT(6) /* Macronix Quad I/O */
+@@ -116,6 +117,7 @@
+
+ enum spi_nor_option_flags {
+ SNOR_F_USE_FSR = BIT(0),
++ SNOR_F_HAS_SR_TB = BIT(1),
+ };
+
+ /**
+@@ -123,7 +125,6 @@
+ * @mtd: point to a mtd_info structure
+ * @lock: the lock for the read/write/erase/lock/unlock operations
+ * @dev: point to a spi device, or a spi nor controller device.
+- * @flash_node: point to a device node describing this flash instance.
+ * @page_size: the page size of the SPI NOR
+ * @addr_width: number of address bytes
+ * @erase_opcode: the opcode for erasing a sector
+@@ -143,7 +144,8 @@
+ * @read: [DRIVER-SPECIFIC] read data from the SPI NOR
+ * @write: [DRIVER-SPECIFIC] write data to the SPI NOR
+ * @erase: [DRIVER-SPECIFIC] erase a sector of the SPI NOR
+- * at the offset @offs
++ * at the offset @offs; if not provided by the driver,
++ * spi-nor will send the erase opcode via write_reg()
+ * @flash_lock: [FLASH-SPECIFIC] lock a region of the SPI NOR
+ * @flash_unlock: [FLASH-SPECIFIC] unlock a region of the SPI NOR
+ * @flash_is_locked: [FLASH-SPECIFIC] check if a region of the SPI NOR is
+@@ -154,7 +156,6 @@
+ struct mtd_info mtd;
+ struct mutex lock;
+ struct device *dev;
+- struct device_node *flash_node;
+ u32 page_size;
+ u8 addr_width;
+ u8 erase_opcode;
+@@ -184,6 +185,17 @@
+ void *priv;
+ };
+
++static inline void spi_nor_set_flash_node(struct spi_nor *nor,
++ struct device_node *np)
++{
++ mtd_set_of_node(&nor->mtd, np);
++}
++
++static inline struct device_node *spi_nor_get_flash_node(struct spi_nor *nor)
++{
++ return mtd_get_of_node(&nor->mtd);
++}
++
+ /**
+ * spi_nor_scan() - scan the SPI NOR
+ * @nor: the spi_nor structure