Merge tag 'mtd/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull MTD updates from Miquel Raynal:
 "This contains the following changes for MTD:

  MTD core changes:
   - New Hyperbus framework
   - New _is_locked (concat) implementation
   - Various cleanups

  NAND core changes:
   - use longest matching pattern in ->exec_op() default parser
   - export NAND operation tracer
   - add flag to indicate panic_write in MTD
   - use kzalloc() instead of kmalloc() and memset()

  Raw NAND controller drivers changes:
   - brcmnand:
       - fix BCH ECC layout for large page NAND parts
       - fallback to detected ecc-strength, ecc-step-size
       - when oops in progress use pio and interrupt polling
       - code refactor code to introduce helper functions
       - add support for v7.3 controller
   - FSMC:
       - use nand_op_trace for operation tracing
   - GPMI:
       - move all driver code into single file
       - various cleanups (including dmaengine changes)
       - use runtime PM to manage clocks
       - implement exec_op
   - MTK:
       - correct low level time calculation of r/w cycle
       - improve data sampling timing for read cycle
       - add validity check for CE# pin setting
       - fix wrongly assigned OOB buffer pointer issue
       - re-license MTK NAND driver as Dual MIT/GPL
   - STM32:
       - manage the get_irq error case
       - increase DMA completion timeouts

  Raw NAND chips drivers changes:
   - Macronix: add read-retry support

  Onenand driver changes:
   - add support for 8Gb datasize chips
   - avoid fall-through warnings

  SPI-NAND changes:
   - define macros for page-read ops with three-byte addresses
   - add support for two-byte device IDs and then for GigaDevice
     GD5F1GQ4UFxxG
   - add initial support for Paragon PN26G0xA
   - handle the case where the last page read has bitflips

  SPI-NOR core changes:
   - add support for the mt25ql02g and w25q16jv flashes
   - print error in case of jedec read id fails
   - is25lp256: add post BFPT fix to correct the addr_width

  SPI NOR controller drivers changes:
   - intel-spi: Add support for Intel Elkhart Lake SPI serial flash
   - smt32: remove the driver as the driver was replaced by spi-stm32-qspi.c
   - cadence-quadspi: add reset control"

* tag 'mtd/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (60 commits)
  mtd: concat: implement _is_locked mtd operation
  mtd: concat: refactor concat_lock/concat_unlock
  mtd: abi: do not use C++ style comments in uapi header
  mtd: afs: remove unneeded NULL check
  mtd: rawnand: stm32_fmc2: increase DMA completion timeouts
  mtd: rawnand: Use kzalloc() instead of kmalloc() and memset()
  mtd: hyperbus: Add driver for TI's HyperBus memory controller
  mtd: spinand: read returns badly if the last page has bitflips
  mtd: spinand: Add initial support for Paragon PN26G0xA
  mtd: rawnand: mtk: Re-license MTK NAND driver as Dual MIT/GPL
  mtd: rawnand: gpmi: remove double assignment to block_size
  dt-bindings: mtd: brcmnand: Add brcmnand, brcmnand-v7.3 support
  mtd: rawnand: brcmnand: Add support for v7.3 controller
  mtd: rawnand: brcmnand: Refactored code to introduce helper functions
  mtd: rawnand: brcmnand: When oops in progress use pio and interrupt polling
  mtd: Add flag to indicate panic_write
  mtd: rawnand: Add Macronix NAND read retry support
  mtd: onenand: Avoid fall-through warnings
  mtd: spinand: Add support for GigaDevice GD5F1GQ4UFxxG
  mtd: spinand: Add support for two-byte device IDs
  ...

1 files changed, 147 insertions, 0 deletions

diff --git a/drivers/mtd/nand/spi/paragon.c b/drivers/mtd/nand/spi/paragon.c
new file mode 100644
index 000000000000..52307681cbd0
--- /dev/null
+++ b/drivers/mtd/nand/spi/paragon.c
@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Jeff Kletsky
+ *
+ * Author: Jeff Kletsky <git-commits@allycomm.com>
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/mtd/spinand.h>
+
+
+#define SPINAND_MFR_PARAGON	0xa1
+
+
+#define PN26G0XA_STATUS_ECC_BITMASK		(3 << 4)
+
+#define PN26G0XA_STATUS_ECC_NONE_DETECTED	(0 << 4)
+#define PN26G0XA_STATUS_ECC_1_7_CORRECTED	(1 << 4)
+#define PN26G0XA_STATUS_ECC_ERRORED		(2 << 4)
+#define PN26G0XA_STATUS_ECC_8_CORRECTED		(3 << 4)
+
+
+static SPINAND_OP_VARIANTS(read_cache_variants,
+		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
+
+static SPINAND_OP_VARIANTS(write_cache_variants,
+		SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
+		SPINAND_PROG_LOAD(true, 0, NULL, 0));
+
+static SPINAND_OP_VARIANTS(update_cache_variants,
+		SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
+		SPINAND_PROG_LOAD(false, 0, NULL, 0));
+
+
+static int pn26g0xa_ooblayout_ecc(struct mtd_info *mtd, int section,
+				   struct mtd_oob_region *region)
+{
+	if (section > 3)
+		return -ERANGE;
+
+	region->offset = 6 + (15 * section); /* 4 BBM + 2 user bytes */
+	region->length = 13;
+
+	return 0;
+}
+
+static int pn26g0xa_ooblayout_free(struct mtd_info *mtd, int section,
+				   struct mtd_oob_region *region)
+{
+	if (section > 4)
+		return -ERANGE;
+
+	if (section == 4) {
+		region->offset = 64;
+		region->length = 64;
+	} else {
+		region->offset = 4 + (15 * section);
+		region->length = 2;
+	}
+
+	return 0;
+}
+
+static int pn26g0xa_ecc_get_status(struct spinand_device *spinand,
+				   u8 status)
+{
+	switch (status & PN26G0XA_STATUS_ECC_BITMASK) {
+	case PN26G0XA_STATUS_ECC_NONE_DETECTED:
+		return 0;
+
+	case PN26G0XA_STATUS_ECC_1_7_CORRECTED:
+		return 7;	/* Return upper limit by convention */
+
+	case PN26G0XA_STATUS_ECC_8_CORRECTED:
+		return 8;
+
+	case PN26G0XA_STATUS_ECC_ERRORED:
+		return -EBADMSG;
+
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
+static const struct mtd_ooblayout_ops pn26g0xa_ooblayout = {
+	.ecc = pn26g0xa_ooblayout_ecc,
+	.free = pn26g0xa_ooblayout_free,
+};
+
+
+static const struct spinand_info paragon_spinand_table[] = {
+	SPINAND_INFO("PN26G01A", 0xe1,
+		     NAND_MEMORG(1, 2048, 128, 64, 1024, 21, 1, 1, 1),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&pn26g0xa_ooblayout,
+				     pn26g0xa_ecc_get_status)),
+	SPINAND_INFO("PN26G02A", 0xe2,
+		     NAND_MEMORG(1, 2048, 128, 64, 2048, 41, 1, 1, 1),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&pn26g0xa_ooblayout,
+				     pn26g0xa_ecc_get_status)),
+};
+
+static int paragon_spinand_detect(struct spinand_device *spinand)
+{
+	u8 *id = spinand->id.data;
+	int ret;
+
+	/* Read ID returns [0][MID][DID] */
+
+	if (id[1] != SPINAND_MFR_PARAGON)
+		return 0;
+
+	ret = spinand_match_and_init(spinand, paragon_spinand_table,
+				     ARRAY_SIZE(paragon_spinand_table),
+				     id[2]);
+	if (ret)
+		return ret;
+
+	return 1;
+}
+
+static const struct spinand_manufacturer_ops paragon_spinand_manuf_ops = {
+	.detect = paragon_spinand_detect,
+};
+
+const struct spinand_manufacturer paragon_spinand_manufacturer = {
+	.id = SPINAND_MFR_PARAGON,
+	.name = "Paragon",
+	.ops = &paragon_spinand_manuf_ops,
+};