add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/Documentation/driver-api/mtdnand.rst
..
..
@@ -180,10 +180,10 @@
180
180
     {
181
181
         struct nand_chip *this = mtd_to_nand(mtd);
182
182
         switch(cmd){
183
-            case NAND_CTL_SETCLE: this->IO_ADDR_W |= CLE_ADRR_BIT;  break;
184
-            case NAND_CTL_CLRCLE: this->IO_ADDR_W &= ~CLE_ADRR_BIT; break;
185
-            case NAND_CTL_SETALE: this->IO_ADDR_W |= ALE_ADRR_BIT;  break;
186
-            case NAND_CTL_CLRALE: this->IO_ADDR_W &= ~ALE_ADRR_BIT; break;
183
+            case NAND_CTL_SETCLE: this->legacy.IO_ADDR_W |= CLE_ADRR_BIT;  break;
184
+            case NAND_CTL_CLRCLE: this->legacy.IO_ADDR_W &= ~CLE_ADRR_BIT; break;
185
+            case NAND_CTL_SETALE: this->legacy.IO_ADDR_W |= ALE_ADRR_BIT;  break;
186
+            case NAND_CTL_CLRALE: this->legacy.IO_ADDR_W &= ~ALE_ADRR_BIT; break;
187
187
         }
188
188
     }
189
189
 
..
..
@@ -197,7 +197,7 @@
197
197
 should return 0, if the device is busy (R/B pin is low) and 1, if the
198
198
 device is ready (R/B pin is high). If the hardware interface does not
199
199
 give access to the ready busy pin, then the function must not be defined
200
-and the function pointer this->dev_ready is set to NULL.
200
+and the function pointer this->legacy.dev_ready is set to NULL.
201
201
 
202
202
 Init function
203
203
 -------------
..
..
@@ -235,14 +235,14 @@
235
235
         }
236
236
 
237
237
         /* Set address of NAND IO lines */
238
-        this->IO_ADDR_R = baseaddr;
239
-        this->IO_ADDR_W = baseaddr;
238
+        this->legacy.IO_ADDR_R = baseaddr;
239
+        this->legacy.IO_ADDR_W = baseaddr;
240
240
         /* Reference hardware control function */
241
241
         this->hwcontrol = board_hwcontrol;
242
242
         /* Set command delay time, see datasheet for correct value */
243
-        this->chip_delay = CHIP_DEPENDEND_COMMAND_DELAY;
243
+        this->legacy.chip_delay = CHIP_DEPENDEND_COMMAND_DELAY;
244
244
         /* Assign the device ready function, if available */
245
-        this->dev_ready = board_dev_ready;
245
+        this->legacy.dev_ready = board_dev_ready;
246
246
         this->eccmode = NAND_ECC_SOFT;
247
247
 
248
248
         /* Scan to find existence of the device */
..
..
@@ -276,8 +276,10 @@
276
276
     #ifdef MODULE
277
277
     static void __exit board_cleanup (void)
278
278
     {
279
-        /* Release resources, unregister device */
280
-        nand_release (mtd_to_nand(board_mtd));
279
+        /* Unregister device */
280
+        WARN_ON(mtd_device_unregister(board_mtd));
281
+        /* Release resources */
282
+        nand_cleanup(mtd_to_nand(board_mtd));
281
283
 
282
284
         /* unmap physical address */
283
285
         iounmap(baseaddr);
..
..
@@ -336,17 +338,17 @@
336
338
         struct nand_chip *this = mtd_to_nand(mtd);
337
339
 
338
340
         /* Deselect all chips */
339
-        this->IO_ADDR_R &= ~BOARD_NAND_ADDR_MASK;
340
-        this->IO_ADDR_W &= ~BOARD_NAND_ADDR_MASK;
341
+        this->legacy.IO_ADDR_R &= ~BOARD_NAND_ADDR_MASK;
342
+        this->legacy.IO_ADDR_W &= ~BOARD_NAND_ADDR_MASK;
341
343
         switch (chip) {
342
344
         case 0:
343
-            this->IO_ADDR_R |= BOARD_NAND_ADDR_CHIP0;
344
-            this->IO_ADDR_W |= BOARD_NAND_ADDR_CHIP0;
345
+            this->legacy.IO_ADDR_R |= BOARD_NAND_ADDR_CHIP0;
346
+            this->legacy.IO_ADDR_W |= BOARD_NAND_ADDR_CHIP0;
345
347
             break;
346
348
         ....
347
349
         case n:
348
-            this->IO_ADDR_R |= BOARD_NAND_ADDR_CHIPn;
349
-            this->IO_ADDR_W |= BOARD_NAND_ADDR_CHIPn;
350
+            this->legacy.IO_ADDR_R |= BOARD_NAND_ADDR_CHIPn;
351
+            this->legacy.IO_ADDR_W |= BOARD_NAND_ADDR_CHIPn;
350
352
             break;
351
353
         }
352
354
     }