From 9a4141880ccdb22a202e11cf30e2400b86025b3c Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <benpicco@googlemail.com>
Date: Wed, 2 Sep 2020 22:50:24 +0200
Subject: [PATCH] mtd: allow to use non-pagewise functions

If the underlying driver implements 'plain' read/write/erase
fucntions, don't convert them to pagewise functions and back.

Just use the old direct functions.
---
 drivers/mtd/mtd.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/mtd/mtd.c b/drivers/mtd/mtd.c
index e19c233693..e6e3338371 100644
--- a/drivers/mtd/mtd.c
+++ b/drivers/mtd/mtd.c
@@ -46,6 +46,10 @@ int mtd_read(mtd_dev_t *mtd, void *dest, uint32_t addr, uint32_t count)
         return -ENODEV;
     }
 
+    if (mtd->driver->read) {
+        return mtd->driver->read(mtd, dest, addr, count);
+    }
+
     /* page size is always a power of two */
     const uint32_t page_shift = bitarithm_msb(mtd->page_size);
     const uint32_t page_mask = mtd->page_size - 1;
@@ -110,6 +114,10 @@ int mtd_write(mtd_dev_t *mtd, const void *src, uint32_t addr, uint32_t count)
         return -ENODEV;
     }
 
+    if (mtd->driver->write) {
+        return mtd->driver->write(mtd, src, addr, count);
+    }
+
     /* page size is always a power of two */
     const uint32_t page_shift = bitarithm_msb(mtd->page_size);
     const uint32_t page_mask = mtd->page_size - 1;
@@ -174,6 +182,10 @@ int mtd_erase(mtd_dev_t *mtd, uint32_t addr, uint32_t count)
         return -ENODEV;
     }
 
+    if (mtd->driver->erase) {
+        mtd->driver->erase(mtd, addr, count);
+    }
+
     uint32_t sector_size = mtd->pages_per_sector * mtd->page_size;
 
     if (count % sector_size) {