xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mtd: rawnand: allow vendors to declare (un)supported features

Browse Source 
If SET/GET_FEATURES is available (from the parameter page), use a
bitmap to declare what feature is actually supported.

Initialize the bitmap in the core to support timing changes (only
feature used by the core), also add support for Micron specific features
used in Micron initialization code (in the init routine).

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal
2018-03-19 14:47:28 +01:00
committed by Boris Brezillon
parent a97421c753
commit 789157e41a
3 changed files with 30 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/linux/mtd/rawnand.h
View File

@@ -21,6 +21,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/flashchip.h>
#include <linux/mtd/bbm.h>
#include <linux/types.h>
struct mtd_info;
struct nand_flash_dev;
@@ -235,7 +236,8 @@ struct nand_chip;
#define ONFI_TIMING_MODE_5 (1 << 5)
#define ONFI_TIMING_MODE_UNKNOWN (1 << 6)
/* ONFI feature address */
/* ONFI feature number/address */
#define ONFI_FEATURE_NUMBER 256
#define ONFI_FEATURE_ADDR_TIMING_MODE 0x1
/* Vendor-specific feature address (Micron) */
@@ -455,12 +457,16 @@ struct onfi_params {
* struct nand_parameters - NAND generic parameters from the parameter page
* @model: Model name
* @supports_set_get_features: The NAND chip supports setting/getting features
* @set_feature_list: Bitmap of features that can be set
* @get_feature_list: Bitmap of features that can be get
* @onfi: ONFI specific parameters
*/
struct nand_parameters {
/* Generic parameters */
char model[100];
bool supports_set_get_features;
DECLARE_BITMAP(set_feature_list, ONFI_FEATURE_NUMBER);
DECLARE_BITMAP(get_feature_list, ONFI_FEATURE_NUMBER);
/* ONFI parameters */
struct onfi_params onfi;