linux-kernel - [PATCH 1/1] m25p80: add JEDEC id and reset SR for Macronix devices

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Date:	Thu, 3 Jan 2013 18:18:50 +0800
From:	jimkuo@...c.com.tw
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] m25p80: add JEDEC id and reset SR for Macronix devices


From: Mike Lavender <mike@...roidmicros.com>

The following modification is based on Linux-3.8-rc1.
I changed and added some JEDEC id of Macronix devices to "m25p_ids" array.
And I set status register to 0 at startup time for using some type of
Macronix device.
Signed-off-by: Jim Kuo <jimkuo@...c.com.tw>
---
diff -uprN a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
--- a/drivers/mtd/devices/m25p80.c  2013-01-03 14:48:03.250938000 +0800
+++ b/drivers/mtd/devices/m25p80.c  2013-01-03 14:55:14.364119000 +0800
@@ -649,13 +649,31 @@ static const struct spi_device_id m25p_i
      { "n25q064",  INFO(0x20ba17, 0, 64 * 1024, 128, 0) },

      /* Macronix */
-     { "mx25l2005a",  INFO(0xc22012, 0, 64 * 1024,   4, SECT_4K) },
-     { "mx25l4005a",  INFO(0xc22013, 0, 64 * 1024,   8, SECT_4K) },
-     { "mx25l8005",   INFO(0xc22014, 0, 64 * 1024,  16, 0) },
-     { "mx25l1606e",  INFO(0xc22015, 0, 64 * 1024,  32, SECT_4K) },
-     { "mx25l3205d",  INFO(0xc22016, 0, 64 * 1024,  64, 0) },
-     { "mx25l6405d",  INFO(0xc22017, 0, 64 * 1024, 128, 0) },
-     { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
+     { "mx25l512e",   INFO(0xc22010, 0, 64 * 1024,   1, SECT_4K) },
+     { "mx25l5121e",  INFO(0xc22210, 0, 64 * 1024,   1, SECT_4K) },
+     { "mx25l1006e",  INFO(0xc22011, 0, 64 * 1024,   2, SECT_4K) },
+     { "mx25l1021e",  INFO(0xc22211, 0, 64 * 1024,   2, SECT_4K) },
+     { "mx25l2006e",  INFO(0xc22012, 0, 64 * 1024,   4, SECT_4K) },
+     { "mx25l4006e",  INFO(0xc22013, 0, 64 * 1024,   8, SECT_4K) },
+     { "mx25u4035",   INFO(0xc22533, 0, 64 * 1024,   8, SECT_4K) },
+     { "mx25v4035",   INFO(0xc22553, 0, 64 * 1024,   8, SECT_4K) },
+     { "mx25l8006e",  INFO(0xc22014, 0, 64 * 1024,  16, 0) },
+     { "mx25u8035",   INFO(0xc22534, 0, 64 * 1024,  16, 0) },
+     { "mx25v8035",   INFO(0xc22554, 0, 64 * 1024,  16, 0) },
+     { "mx25l1606e",  INFO(0xc22015, 0, 64 * 1024,  32, 0) },
+     { "mx25l1633e",  INFO(0xc22415, 0, 64 * 1024,  32, 0) },
+     { "mx25l1635e",  INFO(0xc22515, 0, 64 * 1024,  32, 0) },
+     { "mx25u1635e",  INFO(0xc22535, 0, 64 * 1024,  32, 0) },
+     { "mx25l1655d",  INFO(0xc22615, 0, 64 * 1024,  32, 0) },
+     { "mx25l3206e",  INFO(0xc22016, 0, 64 * 1024,  64, 0) },
+     { "mx25l3239e",  INFO(0xc22536, 0, 64 * 1024,  64, 0) },
+     { "mx25l3225d",  INFO(0xc25e16, 0, 64 * 1024,  64, 0) },
+     { "mx25l3255d",  INFO(0xc29e16, 0, 64 * 1024,  64, 0) },
+     { "mx25l6406e",  INFO(0xc22017, 0, 64 * 1024, 128, 0) },
+     { "mx25l6439e",  INFO(0xc22537, 0, 64 * 1024, 128, 0) },
+     { "mx25l6455e",  INFO(0xc22617, 0, 64 * 1024, 128, 0) },
+     { "mx25l12806e", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
+     { "mx25u12835f", INFO(0xc22538, 0, 64 * 1024, 256, 0) },
      { "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
      { "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, 0) },
      { "mx25l25655e", INFO(0xc22619, 0, 64 * 1024, 512, 0) },
@@ -876,13 +894,14 @@ static int m25p_probe(struct spi_device
      dev_set_drvdata(&spi->dev, flash);

      /*
-      * Atmel, SST and Intel/Numonyx serial flash tend to power
-      * up with the software protection bits set
+      * Atmel, SST, Intel/Numonyx and Macronix serial flash tend
+      * to power up with the software protection bits set
       */

      if (JEDEC_MFR(info->jedec_id) == CFI_MFR_ATMEL ||
          JEDEC_MFR(info->jedec_id) == CFI_MFR_INTEL ||
-         JEDEC_MFR(info->jedec_id) == CFI_MFR_SST) {
+         JEDEC_MFR(info->jedec_id) == CFI_MFR_SST   ||
+         JEDEC_MFR(info->jedec_id) == CFI_MFR_MACRONIX) {
            write_enable(flash);
            write_sr(flash, 0);
      }



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