From 5e308ec7332d01e84a3a5233f4cb8bd5a00026cf Mon Sep 17 00:00:00 2001
From: microcai <microcaicai@gmail.com>
Date: Mon, 29 Jun 2020 23:36:40 +0800
Subject: [PATCH] spi-nor: Add support for xt25f32b/xt25f128b

The RockPi4b dev board ship with xt25f32b solded. add these ids so the
board's spi flash can be accessed within linux.

Signed-off-by: microcai <microcaicai@gmail.com>
---
 drivers/mtd/spi-nor/Makefile |  1 +
 drivers/mtd/spi-nor/xtx.c    | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 drivers/mtd/spi-nor/xtx.c

diff --git a/drivers/mtd/spi-nor/Makefile b/drivers/mtd/spi-nor/Makefile
index 653923896..3f7a52d7f 100644
--- a/drivers/mtd/spi-nor/Makefile
+++ b/drivers/mtd/spi-nor/Makefile
@@ -17,6 +17,7 @@ spi-nor-objs			+= sst.o
 spi-nor-objs			+= xilinx.o
 spi-nor-objs			+= xmc.o
 spi-nor-$(CONFIG_DEBUG_FS)	+= debugfs.o
+spi-nor-objs			+= xtx.o
 obj-$(CONFIG_MTD_SPI_NOR)	+= spi-nor.o
 
 obj-$(CONFIG_MTD_SPI_NOR)	+= controllers/
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index cc68ea843..a469ba0b2 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2024,6 +2024,7 @@ static const struct spi_nor_manufacturer *manufacturers[] = {
 	&spi_nor_winbond,
 	&spi_nor_xilinx,
 	&spi_nor_xmc,
+	&spi_nor_xtx,
 };
 
 static const struct flash_info *
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 6f2f6b271..cea8c0c25 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -398,6 +398,7 @@ extern const struct spi_nor_manufacturer spi_nor_sst;
 extern const struct spi_nor_manufacturer spi_nor_winbond;
 extern const struct spi_nor_manufacturer spi_nor_xilinx;
 extern const struct spi_nor_manufacturer spi_nor_xmc;
+extern const struct spi_nor_manufacturer spi_nor_xtx;
 
 int spi_nor_write_enable(struct spi_nor *nor);
 int spi_nor_write_disable(struct spi_nor *nor);
diff --git a/drivers/mtd/spi-nor/xtx.c b/drivers/mtd/spi-nor/xtx.c
new file mode 100644
index 000000000000..05f2d69401b2
--- /dev/null
+++ b/drivers/mtd/spi-nor/xtx.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005, Intec Automation Inc.
+ * Copyright (C) 2014, Freescale Semiconductor, Inc.
+ */
+
+#include <linux/mtd/spi-nor.h>
+
+#include "core.h"
+
+static const struct flash_info xtx_parts[] = {
+ /* XTX (Shenzhen Xin Tian Xia Tech) */
+ { "xt25f32b", INFO(0x0b4016, 0, 64 * 1024, 64) },
+ { "xt25f128b", INFO(0x0b4018, 0, 64 * 1024, 256) },
+};
+
+const struct spi_nor_manufacturer spi_nor_xtx = {
+ .name = "xtx",
+ .parts = xtx_parts,
+ .nparts = ARRAY_SIZE(xtx_parts),
+};