mtd: rawnand: add basic sandisk manufacturer ops

Add basic Sandisk manufacturer ops support to get
SDTNQGAMA timing data with the nand_get_sdr_timings()
function.

Signed-off-by: Johan Jonker <[e-mail]>
Signed-off-by: Miquel Raynal <[e-mail]>
Link: https://lore.kernel.org/linux-mtd/[e-mail]

drivers/mtd/nand/raw/Makefile

···
 nand-objs += nand_hynix.o
 nand-objs += nand_macronix.o
 nand-objs += nand_micron.o
+nand-objs += nand_sandisk.o
 nand-objs += nand_samsung.o
 nand-objs += nand_toshiba.o

drivers/mtd/nand/raw/internals.h

···
 extern const struct nand_manufacturer_ops macronix_nand_manuf_ops;
 extern const struct nand_manufacturer_ops micron_nand_manuf_ops;
 extern const struct nand_manufacturer_ops samsung_nand_manuf_ops;
+extern const struct nand_manufacturer_ops sandisk_nand_manuf_ops;
 extern const struct nand_manufacturer_ops toshiba_nand_manuf_ops;
 
 /* MLC pairing schemes */

drivers/mtd/nand/raw/nand_ids.c

···
 	{NAND_MFR_NATIONAL, "National"},
 	{NAND_MFR_RENESAS, "Renesas"},
 	{NAND_MFR_SAMSUNG, "Samsung", &samsung_nand_manuf_ops},
-	{NAND_MFR_SANDISK, "SanDisk"},
+	{NAND_MFR_SANDISK, "SanDisk", &sandisk_nand_manuf_ops},
 	{NAND_MFR_STMICRO, "ST Micro"},
 	{NAND_MFR_TOSHIBA, "Toshiba", &toshiba_nand_manuf_ops},
 	{NAND_MFR_WINBOND, "Winbond"},

drivers/mtd/nand/raw/nand_sandisk.c

···
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "internals.h"
+
+static int
+sdtnqgama_choose_interface_config(struct nand_chip *chip,
+				  struct nand_interface_config *iface)
+{
+	onfi_fill_interface_config(chip, iface, NAND_SDR_IFACE, 0);
+
+	return nand_choose_best_sdr_timings(chip, iface, NULL);
+}
+
+static int sandisk_nand_init(struct nand_chip *chip)
+{
+	if (!strncmp("SDTNQGAMA", chip->parameters.model,
+		     sizeof("SDTNQGAMA") - 1))
+		chip->ops.choose_interface_config =
+			&sdtnqgama_choose_interface_config;
+
+	return 0;
+}
+
+const struct nand_manufacturer_ops sandisk_nand_manuf_ops = {
+	.init = sandisk_nand_init,
+};