218 lines
5.6 KiB
Diff
218 lines
5.6 KiB
Diff
--- a/drivers/mtd/maps/lantiq-flash.c
|
|
+++ b/drivers/mtd/maps/lantiq-flash.c
|
|
@@ -19,6 +19,7 @@
|
|
#include <linux/mtd/cfi.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/mtd/physmap.h>
|
|
+#include <linux/mtd/concat.h>
|
|
#include <linux/of.h>
|
|
|
|
#include <lantiq_soc.h>
|
|
@@ -38,10 +39,12 @@
|
|
LTQ_NOR_NORMAL
|
|
};
|
|
|
|
+#define MAX_RESOURCES 4
|
|
+
|
|
struct ltq_mtd {
|
|
- struct resource *res;
|
|
- struct mtd_info *mtd;
|
|
- struct map_info *map;
|
|
+ struct mtd_info *mtd[MAX_RESOURCES];
|
|
+ struct mtd_info *cmtd;
|
|
+ struct map_info map[MAX_RESOURCES];
|
|
};
|
|
|
|
static const char ltq_map_name[] = "ltq_nor";
|
|
@@ -109,12 +112,44 @@
|
|
}
|
|
|
|
static int
|
|
+ltq_mtd_remove(struct platform_device *pdev)
|
|
+{
|
|
+ struct ltq_mtd *ltq_mtd = platform_get_drvdata(pdev);
|
|
+ int i;
|
|
+
|
|
+ if (ltq_mtd == NULL)
|
|
+ return 0;
|
|
+
|
|
+ if (ltq_mtd->cmtd) {
|
|
+ mtd_device_unregister(ltq_mtd->cmtd);
|
|
+ if (ltq_mtd->cmtd != ltq_mtd->mtd[0])
|
|
+ mtd_concat_destroy(ltq_mtd->cmtd);
|
|
+ }
|
|
+
|
|
+ for (i = 0; i < MAX_RESOURCES; i++) {
|
|
+ if (ltq_mtd->mtd[i] != NULL)
|
|
+ map_destroy(ltq_mtd->mtd[i]);
|
|
+ }
|
|
+
|
|
+ kfree(ltq_mtd);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int
|
|
ltq_mtd_probe(struct platform_device *pdev)
|
|
{
|
|
struct mtd_part_parser_data ppdata;
|
|
struct ltq_mtd *ltq_mtd;
|
|
struct cfi_private *cfi;
|
|
- int err;
|
|
+ int err = 0;
|
|
+ int i;
|
|
+ int devices_found = 0;
|
|
+
|
|
+ static const char *rom_probe_types[] = {
|
|
+ "cfi_probe", "jedec_probe", NULL
|
|
+ };
|
|
+ const char **type;
|
|
|
|
if (of_machine_is_compatible("lantiq,falcon") &&
|
|
(ltq_boot_select() != BS_FLASH)) {
|
|
@@ -128,76 +163,88 @@
|
|
|
|
platform_set_drvdata(pdev, ltq_mtd);
|
|
|
|
- ltq_mtd->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
- if (!ltq_mtd->res) {
|
|
- dev_err(&pdev->dev, "failed to get memory resource\n");
|
|
- return -ENOENT;
|
|
+ for (i = 0; i < pdev->num_resources; i++) {
|
|
+ printk(KERN_NOTICE "lantiq nor flash device: %.8llx at %.8llx\n",
|
|
+ (unsigned long long)resource_size(&pdev->resource[i]),
|
|
+ (unsigned long long)pdev->resource[i].start);
|
|
+
|
|
+ if (!devm_request_mem_region(&pdev->dev,
|
|
+ pdev->resource[i].start,
|
|
+ resource_size(&pdev->resource[i]),
|
|
+ dev_name(&pdev->dev))) {
|
|
+ dev_err(&pdev->dev, "Could not reserve memory region\n");
|
|
+ return -ENOMEM;
|
|
+ }
|
|
+
|
|
+ ltq_mtd->map[i].name = ltq_map_name;
|
|
+ ltq_mtd->map[i].bankwidth = 2;
|
|
+ ltq_mtd->map[i].read = ltq_read16;
|
|
+ ltq_mtd->map[i].write = ltq_write16;
|
|
+ ltq_mtd->map[i].copy_from = ltq_copy_from;
|
|
+ ltq_mtd->map[i].copy_to = ltq_copy_to;
|
|
+
|
|
+ if (of_find_property(pdev->dev.of_node, "lantiq,noxip", NULL))
|
|
+ ltq_mtd->map[i].phys = NO_XIP;
|
|
+ else
|
|
+ ltq_mtd->map[i].phys = pdev->resource[i].start;
|
|
+ ltq_mtd->map[i].size = resource_size(&pdev->resource[i]);
|
|
+ ltq_mtd->map[i].virt = devm_ioremap(&pdev->dev, ltq_mtd->map[i].phys,
|
|
+ ltq_mtd->map[i].size);
|
|
+ if (IS_ERR(ltq_mtd->map[i].virt))
|
|
+ return PTR_ERR(ltq_mtd->map[i].virt);
|
|
+
|
|
+ if (ltq_mtd->map[i].virt == NULL) {
|
|
+ dev_err(&pdev->dev, "Failed to ioremap flash region\n");
|
|
+ err = PTR_ERR(ltq_mtd->map[i].virt);
|
|
+ goto err_out;
|
|
+ }
|
|
+
|
|
+ ltq_mtd->map[i].map_priv_1 = LTQ_NOR_PROBING;
|
|
+ for (type = rom_probe_types; !ltq_mtd->mtd[i] && *type; type++)
|
|
+ ltq_mtd->mtd[i] = do_map_probe(*type, <q_mtd->map[i]);
|
|
+ ltq_mtd->map[i].map_priv_1 = LTQ_NOR_NORMAL;
|
|
+
|
|
+ if (!ltq_mtd->mtd[i]) {
|
|
+ dev_err(&pdev->dev, "probing failed\n");
|
|
+ return -ENXIO;
|
|
+ } else {
|
|
+ devices_found++;
|
|
+ }
|
|
+
|
|
+ ltq_mtd->mtd[i]->owner = THIS_MODULE;
|
|
+ ltq_mtd->mtd[i]->dev.parent = &pdev->dev;
|
|
+
|
|
+ cfi = ltq_mtd->map[i].fldrv_priv;
|
|
+ cfi->addr_unlock1 ^= 1;
|
|
+ cfi->addr_unlock2 ^= 1;
|
|
}
|
|
|
|
- ltq_mtd->map = devm_kzalloc(&pdev->dev, sizeof(struct map_info),
|
|
- GFP_KERNEL);
|
|
- if (!ltq_mtd->map)
|
|
- return -ENOMEM;
|
|
-
|
|
- if (of_find_property(pdev->dev.of_node, "lantiq,noxip", NULL))
|
|
- ltq_mtd->map->phys = NO_XIP;
|
|
- else
|
|
- ltq_mtd->map->phys = ltq_mtd->res->start;
|
|
- ltq_mtd->res->start;
|
|
- ltq_mtd->map->size = resource_size(ltq_mtd->res);
|
|
- ltq_mtd->map->virt = devm_ioremap_resource(&pdev->dev, ltq_mtd->res);
|
|
- if (IS_ERR(ltq_mtd->map->virt))
|
|
- return PTR_ERR(ltq_mtd->map->virt);
|
|
-
|
|
- ltq_mtd->map->name = ltq_map_name;
|
|
- ltq_mtd->map->bankwidth = 2;
|
|
- ltq_mtd->map->read = ltq_read16;
|
|
- ltq_mtd->map->write = ltq_write16;
|
|
- ltq_mtd->map->copy_from = ltq_copy_from;
|
|
- ltq_mtd->map->copy_to = ltq_copy_to;
|
|
-
|
|
- ltq_mtd->map->map_priv_1 = LTQ_NOR_PROBING;
|
|
- ltq_mtd->mtd = do_map_probe("cfi_probe", ltq_mtd->map);
|
|
- ltq_mtd->map->map_priv_1 = LTQ_NOR_NORMAL;
|
|
-
|
|
- if (!ltq_mtd->mtd) {
|
|
- dev_err(&pdev->dev, "probing failed\n");
|
|
- return -ENXIO;
|
|
- }
|
|
-
|
|
- ltq_mtd->mtd->owner = THIS_MODULE;
|
|
-
|
|
- cfi = ltq_mtd->map->fldrv_priv;
|
|
- cfi->addr_unlock1 ^= 1;
|
|
- cfi->addr_unlock2 ^= 1;
|
|
+ if (devices_found == 1) {
|
|
+ ltq_mtd->cmtd = ltq_mtd->mtd[0];
|
|
+ } else if (devices_found > 1) {
|
|
+ /*
|
|
+ * We detected multiple devices. Concatenate them together.
|
|
+ */
|
|
+ ltq_mtd->cmtd = mtd_concat_create(ltq_mtd->mtd, devices_found, dev_name(&pdev->dev));
|
|
+ if (ltq_mtd->cmtd == NULL)
|
|
+ err = -ENXIO;
|
|
+ }
|
|
|
|
ppdata.of_node = pdev->dev.of_node;
|
|
- err = mtd_device_parse_register(ltq_mtd->mtd, ltq_probe_types,
|
|
+ err = mtd_device_parse_register(ltq_mtd->cmtd, ltq_probe_types,
|
|
&ppdata, NULL, 0);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "failed to add partitions\n");
|
|
- goto err_destroy;
|
|
+ goto err_out;
|
|
}
|
|
|
|
return 0;
|
|
|
|
-err_destroy:
|
|
- map_destroy(ltq_mtd->mtd);
|
|
+err_out:
|
|
+ ltq_mtd_remove(pdev);
|
|
return err;
|
|
}
|
|
|
|
-static int
|
|
-ltq_mtd_remove(struct platform_device *pdev)
|
|
-{
|
|
- struct ltq_mtd *ltq_mtd = platform_get_drvdata(pdev);
|
|
-
|
|
- if (ltq_mtd && ltq_mtd->mtd) {
|
|
- mtd_device_unregister(ltq_mtd->mtd);
|
|
- map_destroy(ltq_mtd->mtd);
|
|
- }
|
|
- return 0;
|
|
-}
|
|
-
|
|
static const struct of_device_id ltq_mtd_match[] = {
|
|
{ .compatible = "lantiq,nor" },
|
|
{},
|