[MTD] [NAND] sh_flctl: add support for Renesas SuperH FLCTL
Several Renesas SuperH CPU has FLCTL. The FLCTL support NAND Flash.
This driver support SH7723.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/include/linux/mtd/sh_flctl.h b/include/linux/mtd/sh_flctl.h
new file mode 100644
index 0000000..e77c1ce
--- /dev/null
+++ b/include/linux/mtd/sh_flctl.h
@@ -0,0 +1,125 @@
+/*
+ * SuperH FLCTL nand controller
+ *
+ * Copyright © 2008 Renesas Solutions Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __SH_FLCTL_H__
+#define __SH_FLCTL_H__
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+
+/* FLCTL registers */
+#define FLCMNCR(f) (f->reg + 0x0)
+#define FLCMDCR(f) (f->reg + 0x4)
+#define FLCMCDR(f) (f->reg + 0x8)
+#define FLADR(f) (f->reg + 0xC)
+#define FLADR2(f) (f->reg + 0x3C)
+#define FLDATAR(f) (f->reg + 0x10)
+#define FLDTCNTR(f) (f->reg + 0x14)
+#define FLINTDMACR(f) (f->reg + 0x18)
+#define FLBSYTMR(f) (f->reg + 0x1C)
+#define FLBSYCNT(f) (f->reg + 0x20)
+#define FLDTFIFO(f) (f->reg + 0x24)
+#define FLECFIFO(f) (f->reg + 0x28)
+#define FLTRCR(f) (f->reg + 0x2C)
+#define FL4ECCRESULT0(f) (f->reg + 0x80)
+#define FL4ECCRESULT1(f) (f->reg + 0x84)
+#define FL4ECCRESULT2(f) (f->reg + 0x88)
+#define FL4ECCRESULT3(f) (f->reg + 0x8C)
+#define FL4ECCCR(f) (f->reg + 0x90)
+#define FL4ECCCNT(f) (f->reg + 0x94)
+#define FLERRADR(f) (f->reg + 0x98)
+
+/* FLCMNCR control bits */
+#define ECCPOS2 (0x1 << 25)
+#define _4ECCCNTEN (0x1 << 24)
+#define _4ECCEN (0x1 << 23)
+#define _4ECCCORRECT (0x1 << 22)
+#define SNAND_E (0x1 << 18) /* SNAND (0=512 1=2048)*/
+#define QTSEL_E (0x1 << 17)
+#define ENDIAN (0x1 << 16) /* 1 = little endian */
+#define FCKSEL_E (0x1 << 15)
+#define ECCPOS_00 (0x00 << 12)
+#define ECCPOS_01 (0x01 << 12)
+#define ECCPOS_02 (0x02 << 12)
+#define ACM_SACCES_MODE (0x01 << 10)
+#define NANWF_E (0x1 << 9)
+#define SE_D (0x1 << 8) /* Spare area disable */
+#define CE1_ENABLE (0x1 << 4) /* Chip Enable 1 */
+#define CE0_ENABLE (0x1 << 3) /* Chip Enable 0 */
+#define TYPESEL_SET (0x1 << 0)
+
+/* FLCMDCR control bits */
+#define ADRCNT2_E (0x1 << 31) /* 5byte address enable */
+#define ADRMD_E (0x1 << 26) /* Sector address access */
+#define CDSRC_E (0x1 << 25) /* Data buffer selection */
+#define DOSR_E (0x1 << 24) /* Status read check */
+#define SELRW (0x1 << 21) /* 0:read 1:write */
+#define DOADR_E (0x1 << 20) /* Address stage execute */
+#define ADRCNT_1 (0x00 << 18) /* Address data bytes: 1byte */
+#define ADRCNT_2 (0x01 << 18) /* Address data bytes: 2byte */
+#define ADRCNT_3 (0x02 << 18) /* Address data bytes: 3byte */
+#define ADRCNT_4 (0x03 << 18) /* Address data bytes: 4byte */
+#define DOCMD2_E (0x1 << 17) /* 2nd cmd stage execute */
+#define DOCMD1_E (0x1 << 16) /* 1st cmd stage execute */
+
+/* FLTRCR control bits */
+#define TRSTRT (0x1 << 0) /* translation start */
+#define TREND (0x1 << 1) /* translation end */
+
+/* FL4ECCCR control bits */
+#define _4ECCFA (0x1 << 2) /* 4 symbols correct fault */
+#define _4ECCEND (0x1 << 1) /* 4 symbols end */
+#define _4ECCEXST (0x1 << 0) /* 4 symbols exist */
+
+#define INIT_FL4ECCRESULT_VAL 0x03FF03FF
+#define LOOP_TIMEOUT_MAX 0x00010000
+
+#define mtd_to_flctl(mtd) container_of(mtd, struct sh_flctl, mtd)
+
+struct sh_flctl {
+ struct mtd_info mtd;
+ struct nand_chip chip;
+ void __iomem *reg;
+
+ uint8_t done_buff[2048 + 64]; /* max size 2048 + 64 */
+ int read_bytes;
+ int index;
+ int seqin_column; /* column in SEQIN cmd */
+ int seqin_page_addr; /* page_addr in SEQIN cmd */
+ uint32_t seqin_read_cmd; /* read cmd in SEQIN cmd */
+ int erase1_page_addr; /* page_addr in ERASE1 cmd */
+ uint32_t erase_ADRCNT; /* bits of FLCMDCR in ERASE1 cmd */
+ uint32_t rw_ADRCNT; /* bits of FLCMDCR in READ WRITE cmd */
+
+ int hwecc_cant_correct[4];
+
+ unsigned page_size:1; /* NAND page size (0 = 512, 1 = 2048) */
+ unsigned hwecc:1; /* Hardware ECC (0 = disabled, 1 = enabled) */
+};
+
+struct sh_flctl_platform_data {
+ struct mtd_partition *parts;
+ int nr_parts;
+ unsigned long flcmncr_val;
+
+ unsigned has_hwecc:1;
+};
+
+#endif /* __SH_FLCTL_H__ */