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[U-Boot,v5,01/32] mtd: Add m25p80 driver

Message ID 1455131307-25406-2-git-send-email-jteki@openedev.com
State Superseded
Delegated to: Jagannadha Sutradharudu Teki
Headers show

Commit Message

Jagan Teki Feb. 10, 2016, 7:07 p.m. UTC 
This is MTD SPI-NOR driver for ST M25Pxx (and similar)
serial flash chips which is written as MTD_UCLASS.

More features will be adding on further patches.

Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
---
 Makefile                     |  1 +
 drivers/mtd/spi-nor/Makefile |  6 ++++++
 drivers/mtd/spi-nor/m25p80.c | 37 +++++++++++++++++++++++++++++++++++++
 3 files changed, 44 insertions(+)
 create mode 100644 drivers/mtd/spi-nor/Makefile
 create mode 100644 drivers/mtd/spi-nor/m25p80.c
diff mbox

Patch

diff --git a/Makefile b/Makefile
index 430dd4f..f299a24 100644
--- a/Makefile
+++ b/Makefile
@@ -637,6 +637,7 @@  libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
 libs-y += drivers/mtd/onenand/
 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
 libs-y += drivers/mtd/spi/
+libs-y += drivers/mtd/spi-nor/
 libs-y += drivers/net/
 libs-y += drivers/net/phy/
 libs-y += drivers/pci/
diff --git a/drivers/mtd/spi-nor/Makefile b/drivers/mtd/spi-nor/Makefile
new file mode 100644
index 0000000..a4c19e3
--- /dev/null
+++ b/drivers/mtd/spi-nor/Makefile
@@ -0,0 +1,6 @@ 
+#
+# Copyright (C) 2016 Jagan Teki <jteki@openedev.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+
+obj-$(CONFIG_MTD_M25P80)	+= m25p80.o
diff --git a/drivers/mtd/spi-nor/m25p80.c b/drivers/mtd/spi-nor/m25p80.c
new file mode 100644
index 0000000..833a9c3
--- /dev/null
+++ b/drivers/mtd/spi-nor/m25p80.c
@@ -0,0 +1,37 @@ 
+/*
+ * MTD SPI-NOR driver for ST M25Pxx (and similar) serial flash chips
+ *
+ * Copyright (C) 2016 Jagan Teki <jteki@openedev.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <spi.h>
+#include <linux/mtd/mtd.h>
+
+static int m25p_probe(struct udevice *dev)
+{
+	struct spi_slave *spi = dev_get_parent_priv(dev);
+	struct mtd_info	*mtd = dev_get_uclass_priv(dev);
+
+	return 0;
+}
+
+static const struct udevice_id m25p_ids[] = {
+	/*
+	 * Generic compatibility for SPI NOR that can be identified by the
+	 * JEDEC READ ID opcode (0x9F). Use this, if possible.
+	 */
+	{ .compatible = "jedec,spi-nor" },
+	{ }
+};
+
+U_BOOT_DRIVER(m25p80) = {
+	.name		= "m25p80",
+	.id		= UCLASS_MTD,
+	.of_match	= m25p_ids,
+	.probe		= m25p_probe,
+};