This patch adds a common JEDEC flash device table which can be
expanded on as more features are required.
A simple match function is also included to query the table for
a match based on the JEDEC id.
Signed-off-by: Tony Prisk <li...@prisktech.co.nz>
---
drivers/mtd/devices/flash_jedec.c | 96 +++++++++++++++++++++++++++++++++++++
drivers/mtd/devices/flash_jedec.h | 30 ++++++++++++
2 files changed, 126 insertions(+)
create mode 100644 drivers/mtd/devices/flash_jedec.c
create mode 100644 drivers/mtd/devices/flash_jedec.h
diff --git a/drivers/mtd/devices/flash_jedec.c
b/drivers/mtd/devices/flash_jedec.c
new file mode 100644
index 0000000..c0b2272
--- /dev/null
+++ b/drivers/mtd/devices/flash_jedec.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright Tony Prisk <li...@prisktech.co.nz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/bug.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+
+#include "flash_jedec.h"
+
+/*
+ * Device Manufacturer IDs
+ * Please keep sorted by manufacturer ID
+ */
+#define MFR_SPANSION 0X01
+#define MFR_EON 0X1C
+#define MFR_ATMEL 0X1F
+#define MFR_MICRON 0X20 /* Also Numonyx & STM */
+#define MFR_INTEL 0x89
+#define MFR_FUDAN 0XA1
+#define MFR_SST 0XBF
+#define MFR_MXIC 0XC2
+#define MFR_WINBOND 0XEF
+
+#define _ID(m, d) ((m << 16) | d)
+
+/*
+ * Flash device information
+ * Please keep sorted by manufacturer id, then device id
+ */
+static struct flash_device_info flash_devices[] = {
+ /* Spansion */
+ { "s25fl016", _ID(MFR_SPANSION, 0x0214), 2048 },
+ { "s25fl064", _ID(MFR_SPANSION, 0x0216), 8192 },
+ /* EON */
+ { "en25p16", _ID(MFR_EON, 0x2015), 2048 },
+ { "en25p64", _ID(MFR_EON, 0x2017), 8192 },
+ { "en25f40", _ID(MFR_EON, 0x3113), 512 },
+ { "en25f16", _ID(MFR_EON, 0x3115), 2048 },
+ /* ATMEL */
+ { "at25df041a", _ID(MFR_ATMEL, 0x4401), 512 },
+ /* Micron, STM & Numonyx */
+ { "stm25p16", _ID(MFR_MICRON, 0x2015), 2048 },
+ { "stm25p64", _ID(MFR_MICRON, 0x2017), 8192 },
+ /* Fudan */
+ { "fm25f04", _ID(MFR_FUDAN, 0x3113), 512 },
+ /* SST */
+ { "sst25vf016b", _ID(MFR_SST, 0x2541), 2048 },
+ /* Macronix - MXIC */
+ { "mx25l512", _ID(MFR_MXIC, 0x2010), 64 },
+ { "mx25l4005", _ID(MFR_MXIC, 0x2013), 512 },
+ { "mx25l1605", _ID(MFR_MXIC, 0x2015), 2048 },
+ { "mx25l3205", _ID(MFR_MXIC, 0x2016), 4096 },
+ { "mx25l6405", _ID(MFR_MXIC, 0x2017), 8192 },
+ { "mx25l12805", _ID(MFR_MXIC, 0x2018), 16384 },
+ { "mx25l1635", _ID(MFR_MXIC, 0x2415), 2048 },
+ { "mx25l3235", _ID(MFR_MXIC, 0x5E16), 4096 },
+ /* Winbond */
+ { "w25x40", _ID(MFR_WINBOND, 0x3013), 512 },
+ { "w25x16", _ID(MFR_WINBOND, 0x3015), 2048 },
+ { "w25x32", _ID(MFR_WINBOND, 0x3016), 4096 },
+ { "w25x64", _ID(MFR_WINBOND, 0x3017), 8192 },
+};
+
+/*
+ * jedec_match_device - match a jedec id against the flash_devices table
+ * @jedecid: JEDEC formatted id to match
+ * bits 16..24: manufacturer id
+ * bits 0..15: device id
+ * Returns a valid flash_device_info* or ERR_PTR(-ENODEV) if an entry is
+ * not found
+ */
+struct flash_device_info *jedec_match_device(u32 jedec_id)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(flash_devices); i++)
+ if (flash_devices[i].jedec_id == jedec_id)
+ return &flash_devices[i];
+
+ return ERR_PTR(-ENODEV);
+}
diff --git a/drivers/mtd/devices/flash_jedec.h
b/drivers/mtd/devices/flash_jedec.h
new file mode 100644
index 0000000..27b978a
--- /dev/null
+++ b/drivers/mtd/devices/flash_jedec.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright Tony Prisk <li...@prisktech.co.nz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __MTD_FLASH_JEDEC
+#define __MTD_FLASH_JEDEC
+
+struct flash_device_info {
+ const char *name;
+ u32 jedec_id;
+ u32 size_kb;
+};
+
+extern struct flash_device_info *jedec_match_device(u32 jedec_id);
+
+#endif
--
1.7.9.5
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