Merge git://git.infradead.org/~dwmw2/mtd-2.6.33

* git://git.infradead.org/~dwmw2/mtd-2.6.33:
  mtd: tests: fix read, speed and stress tests on NOR flash
  mtd: Really add ARM pismo support
  kmsg_dump: Dump on crash_kexec as well

11 files changed, 379 insertions, 5 deletions

diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 4c364d44ad59..2de0cc823d60 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -549,4 +549,21 @@ config MTD_VMU
           To build this as a module select M here, the module will be called
           vmu-flash.
 
+config MTD_PISMO
+        tristate "MTD discovery driver for PISMO modules"
+        depends on I2C
+        depends on ARCH_VERSATILE
+        help
+          This driver allows for discovery of PISMO modules - see
+          <http://www.pismoworld.org/>.  These are small modules containing
+          up to five memory devices (eg, SRAM, flash, DOC) described by an
+          I2C EEPROM.
+
+          This driver does not create any MTD maps itself; instead it
+          creates MTD physmap and MTD SRAM platform devices.  If you
+          enable this option, you should consider enabling MTD_PHYSMAP
+          and/or MTD_PLATRAM according to the devices on your module.
+
+          When built as a module, it will be called pismo.ko
+
 endmenu
diff --git a/drivers/mtd/maps/pismo.c b/drivers/mtd/maps/pismo.c
new file mode 100644
index 000000000000..c48cad271f5d
--- /dev/null
+++ b/drivers/mtd/maps/pismo.c
@@ -0,0 +1,320 @@
+/*
+ * PISMO memory driver - http://www.pismoworld.org/
+ *
+ * For ARM Realview and Versatile platforms
+ *
+ * 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.
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/plat-ram.h>
+#include <linux/mtd/pismo.h>
+
+#define PISMO_NUM_CS    5
+
+struct pismo_cs_block {
+        u8      type;
+        u8      width;
+        __le16  access;
+        __le32  size;
+        u32     reserved[2];
+        char    device[32];
+} __packed;
+
+struct pismo_eeprom {
+        struct pismo_cs_block cs[PISMO_NUM_CS];
+        char    board[15];
+        u8      sum;
+} __packed;
+
+struct pismo_mem {
+        phys_addr_t base;
+        u32     size;
+        u16     access;
+        u8      width;
+        u8      type;
+};
+
+struct pismo_data {
+        struct i2c_client       *client;
+        void                    (*vpp)(void *, int);
+        void                    *vpp_data;
+        struct platform_device  *dev[PISMO_NUM_CS];
+};
+
+/* FIXME: set_vpp could do with a better calling convention */
+static struct pismo_data *vpp_pismo;
+static DEFINE_MUTEX(pismo_mutex);
+
+static int pismo_setvpp_probe_fix(struct pismo_data *pismo)
+{
+        mutex_lock(&pismo_mutex);
+        if (vpp_pismo) {
+                mutex_unlock(&pismo_mutex);
+                kfree(pismo);
+                return -EBUSY;
+        }
+        vpp_pismo = pismo;
+        mutex_unlock(&pismo_mutex);
+        return 0;
+}
+
+static void pismo_setvpp_remove_fix(struct pismo_data *pismo)
+{
+        mutex_lock(&pismo_mutex);
+        if (vpp_pismo == pismo)
+                vpp_pismo = NULL;
+        mutex_unlock(&pismo_mutex);
+}
+
+static void pismo_set_vpp(struct map_info *map, int on)
+{
+        struct pismo_data *pismo = vpp_pismo;
+
+        pismo->vpp(pismo->vpp_data, on);
+}
+/* end of hack */
+
+
+static unsigned int __devinit pismo_width_to_bytes(unsigned int width)
+{
+        width &= 15;
+        if (width > 2)
+                return 0;
+        return 1 << width;
+}
+
+static int __devinit pismo_eeprom_read(struct i2c_client *client, void *buf,
+        u8 addr, size_t size)
+{
+        int ret;
+        struct i2c_msg msg[] = {
+                {
+                        .addr = client->addr,
+                        .len = sizeof(addr),
+                        .buf = &addr,
+                }, {
+                        .addr = client->addr,
+                        .flags = I2C_M_RD,
+                        .len = size,
+                        .buf = buf,
+                },
+        };
+
+        ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+
+        return ret == ARRAY_SIZE(msg) ? size : -EIO;
+}
+
+static int __devinit pismo_add_device(struct pismo_data *pismo, int i,
+        struct pismo_mem *region, const char *name, void *pdata, size_t psize)
+{
+        struct platform_device *dev;
+        struct resource res = { };
+        phys_addr_t base = region.base;
+        int ret;
+
+        if (base == ~0)
+                return -ENXIO;
+
+        res.start = base;
+        res.end = base + region->size - 1;
+        res.flags = IORESOURCE_MEM;
+
+        dev = platform_device_alloc(name, i);
+        if (!dev)
+                return -ENOMEM;
+        dev->dev.parent = &pismo->client->dev;
+
+        do {
+                ret = platform_device_add_resources(dev, &res, 1);
+                if (ret)
+                        break;
+
+                ret = platform_device_add_data(dev, pdata, psize);
+                if (ret)
+                        break;
+
+                ret = platform_device_add(dev);
+                if (ret)
+                        break;
+
+                pismo->dev[i] = dev;
+                return 0;
+        } while (0);
+
+        platform_device_put(dev);
+        return ret;
+}
+
+static int __devinit pismo_add_nor(struct pismo_data *pismo, int i,
+        struct pismo_mem *region)
+{
+        struct physmap_flash_data data = {
+                .width = region->wid