[PATCH] m25p80: Add support of Macronix SPI flash

[PATCH] m25p80: Add support of Macronix SPI flash

[jimkuo]

Hello,
I'm an engineer of Macronix. I just verified our serial nor flashes with
Linux m25p80 driver.
Could you please commit the changes to next version of Linux?

I replace the old JEDEC id with our new product's.
Two of our products have different page size, so I add the "if statement"
before page size assignment.
The following is my patch which diff from Linux-3.6 kernel. Thank you!
---

--- drivers/mtd/devices/m25p80.c.orig     2012-09-28 11:29:03.391552000
+0800
+++ drivers/mtd/devices/m25p80.c    2012-09-28 14:27:42.470208000 +0800
@@ -648,13 +648,31 @@ static const struct spi_device_id m25p_i
      { "640s33b",  INFO(0x898913, 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) },
@@ -905,7 +923,11 @@ static int __devinit m25p_probe(struct s

      ppdata.of_node = spi->dev.of_node;
      flash->mtd.dev.parent = &spi->dev;
-     flash->page_size = info->page_size;
+     /* small size page of Macronix chip */
+     if (info->jedec_id == 0xc22210 || info->jedec_id == 0xc22211)
+           flash->page_size = 32;
+     else
+           flash->page_size = info->page_size;
      flash->mtd.writebufsize = flash->page_size;

      if (info->addr_width)

--



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