Merge tag 'nand/for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux into mtd/next

Core changes:
* Drop useless 'depends on' in Kconfig
* Add an extra level in the Kconfig hierarchy
* Trivial spellings
* Dynamic allocation of the interface configurations
* Dropping the default ONFI timing mode
* Various cleanup (types, structures, naming, comments)
* Hide the chip->data_interface indirection
* Add the generic rb-gpios property
* Add the ->choose_interface_config() hook
* Introduce nand_choose_best_sdr_timings()
* Use default values for tPROG_max and tBERS_max
* Avoid redefining tR_max and tCCS_min
* Add a helper to find the closest ONFI mode
* bcm63xx MTD parsers: simplify CFE detection

Raw NAND controller drivers changes:
* fsl-upm: Deprecation of specific DT properties
* fsl_upm: Driver rework and cleanup in favor of ->exec_op()
* Ingenic: Cleanup ARRAY_SIZE() vs sizeof() use
* brcmnand: ECC error handling on EDU transfers
* brcmnand: Don't default to EDU transfers
* qcom: Set BAM mode only if not set already
* qcom: Avoid write to unavailable register
* gpio: Driver rework in favor of ->exec_op()
* tango: ->exec_op() conversion
* mtk: ->exec_op() conversion

Raw NAND chip drivers changes:
* toshiba: Implement ->choose_interface_config() for TH58NVG2S3HBAI4
* toshiba: Implement ->choose_interface_config() for TC58NVG0S3E
* toshiba: Implement ->choose_interface_config() for TC58TEG5DCLTA00
* hynix: Implement ->choose_interface_config() for H27UCG8T2ATR-BC

1 files changed, 81 insertions, 48 deletions

diff --git a/drivers/mtd/nand/raw/tango_nand.c b/drivers/mtd/nand/raw/tango_nand.c
index 246871e01027..bdb965ae7a4a 100644
--- a/drivers/mtd/nand/raw/tango_nand.c
+++ b/drivers/mtd/nand/raw/tango_nand.c
@@ -113,59 +113,80 @@ struct tango_chip {
 
 #define TIMING(t0, t1, t2, t3) ((t0) << 24 | (t1) << 16 | (t2) << 8 | (t3))
 
-static void tango_cmd_ctrl(struct nand_chip *chip, int dat, unsigned int ctrl)
+static void tango_select_target(struct nand_chip *chip, unsigned int cs)
 {
+	struct tango_nfc *nfc = to_tango_nfc(chip->controller);
 	struct tango_chip *tchip = to_tango_chip(chip);
 
-	if (ctrl & NAND_CLE)
-		writeb_relaxed(dat, tchip->base + PBUS_CMD);
-
-	if (ctrl & NAND_ALE)
-		writeb_relaxed(dat, tchip->base + PBUS_ADDR);
+	writel_relaxed(tchip->timing1, nfc->reg_base + NFC_TIMING1);
+	writel_relaxed(tchip->timing2, nfc->reg_base + NFC_TIMING2);
+	writel_relaxed(tchip->xfer_cfg, nfc->reg_base + NFC_XFER_CFG);
+	writel_relaxed(tchip->pkt_0_cfg, nfc->reg_base + NFC_PKT_0_CFG);
+	writel_relaxed(tchip->pkt_n_cfg, nfc->reg_base + NFC_PKT_N_CFG);
+	writel_relaxed(tchip->bb_cfg, nfc->reg_base + NFC_BB_CFG);
 }
 
-static int tango_dev_ready(struct nand_chip *chip)
+static int tango_waitrdy(struct nand_chip *chip, unsigned int timeout_ms)
 {
 	struct tango_nfc *nfc = to_tango_nfc(chip->controller);
+	u32 status;
 
-	return readl_relaxed(nfc->pbus_base + PBUS_CS_CTRL) & PBUS_IORDY;
+	return readl_relaxed_poll_timeout(nfc->pbus_base + PBUS_CS_CTRL,
+					  status, status & PBUS_IORDY, 20,
+					  timeout_ms);
 }
 
-static u8 tango_read_byte(struct nand_chip *chip)
+static int tango_exec_instr(struct nand_chip *chip,
+			    const struct nand_op_instr *instr)
 {
 	struct tango_chip *tchip = to_tango_chip(chip);
+	unsigned int i;
 
-	return readb_relaxed(tchip->base + PBUS_DATA);
-}
-
-static void tango_read_buf(struct nand_chip *chip, u8 *buf, int len)
-{
-	struct tango_chip *tchip = to_tango_chip(chip);
+	switch (instr->type) {
+	case NAND_OP_CMD_INSTR:
+		writeb_relaxed(instr->ctx.cmd.opcode, tchip->base + PBUS_CMD);
+		return 0;
+	case NAND_OP_ADDR_INSTR:
+		for (i = 0; i < instr->ctx.addr.naddrs; i++)
+			writeb_relaxed(instr->ctx.addr.addrs[i],
+				       tchip->base + PBUS_ADDR);
+		return 0;
+	case NAND_OP_DATA_IN_INSTR:
+		ioread8_rep(tchip->base + PBUS_DATA, instr->ctx.data.buf.in,
+			    instr->ctx.data.len);
+		return 0;
+	case NAND_OP_DATA_OUT_INSTR:
+		iowrite8_rep(tchip->base + PBUS_DATA, instr->ctx.data.buf.out,
+			     instr->ctx.data.len);
+		return 0;
+	case NAND_OP_WAITRDY_INSTR:
+		return tango_waitrdy(chip,
+				     instr->ctx.waitrdy.timeout_ms);
+	default:
+		break;
+	}
 
-	ioread8_rep(tchip->base + PBUS_DATA, buf, len);
+	return -EINVAL;
 }
 
-static void tango_write_buf(struct nand_chip *chip, const u8 *buf, int len)
+static int tango_exec_op(struct nand_chip *chip,
+			 const struct nand_operation *op,
+			 bool check_only)
 {
-	struct tango_chip *tchip = to_tango_chip(chip);
-
-	iowrite8_rep(tchip->base + PBUS_DATA, buf, len);
-}
+	unsigned int i;
+	int ret = 0;
 
-static void tango_select_chip(struct nand_chip *chip, int idx)
-{
-	struct tango_nfc *nfc = to_tango_nfc(chip->controller);
-	struct tango_chip *tchip = to_tango_chip(chip);
+	if (check_only)
+		return 0;
 
-	if (idx < 0)
-		return; /* No "chip unselect" function */
+	tango_select_target(chip, op->cs);
+	for (i = 0; i < op->ninstrs; i++) {
+		ret = tango_exec_instr(chip, &op->instrs[i]);
+		if (ret)
+			break;
+	}
 
-	writel_relaxed(tchip->timing1, nfc->reg_base + NFC_TIMING1);
-	writel_relaxed(tchip->timing2, nfc->reg_base + NFC_TIMING2);
-	writel_relaxed(tchip->xfer_cfg, nfc->reg_base + NFC_XFER_CFG);
-	writel_relaxed(tchip->pkt_0_cfg, nfc->reg_base + NFC_PKT_0_CFG);
-	writel_relaxed(tchip->pkt_n_cfg, nfc->reg_base + NFC_PKT_N_CFG);
-	writel_relaxed(tchip->bb_cfg, nfc->reg_base + NFC_BB_CFG);
+	return ret;
 }
 
 /*
@@ -279,6 +300,7 @@ static int tango_read_page(struct nand_chip *chip, u8 *buf,
 	struct tango_nfc *nfc = to_tango_nfc(chip->controller);
 	int err, res, len = mtd->writesize;
 
+	tango_select_target(chip, chip->cur_cs);
 	if (oob_required)
 		chip->ecc.read_oob(chip, page);
 
@@ -300,22 +322,30 @@ static int tango_write_page(struct nand_chip *chip, const u8 *buf,
 {
 	struct mtd_info *mtd = nand_to_mtd(chip);
 	struct tango_nfc *nfc = to_tango_nfc(chip->controller);
-	int err, status, len = mtd->writesize;
+	const struct nand_sdr_timings *timings;
+	int err, len = mtd->writesize;
+	u8 status;
 
 	/* Calling tango_write_oob() would send PAGEPROG twice */
 	if (oob_required)
 		return -ENOTSUPP;
 
+	tango_select_target(chip, chip->cur_cs);
 	writel_relaxed(0xffffffff, nfc->mem_base + METADATA);
 	err = do_dma(nfc, DMA_TO_DEVICE, NFC_WRITE, buf, len, page);
 	if (err)
 		return err;
 
-	status = chip->legacy.waitfunc(chip);
-	if (status & NAND_STATUS_FAIL)
-		return -EIO;
+	timings = nand_get_sdr_timings(nand_get_interface_config(chip));
+	err = tango_waitrdy(chip, PSEC_TO_MSEC(timings->tR_max));
+	if (err)
+		return err;
 
-	return 0;
+	err = nand_status_op(chip, &status);
+	if (err)
+		return err;
+
+	return (status & NAND_STATUS_FAIL) ? -EIO : 0;
 }
 
 static void aux_read(struct nand_chip *chip, u8 **buf, int len, int *pos)
@@ -326,7 +356,9 @@ static void aux_read(struct nand_chip *chip, u8 **buf, int len, int *pos)
 		/* skip over "len" bytes */
 		nand_change_read_column_op(chip, *pos, NULL, 0, false);
 	} else {
-		tango_read_buf(chip, *buf, len);
+		struct tango_chip *tchip = to_tango_chip(chip);
+
+		ioread8_rep(tchip->base + PBUS_DATA, *buf, len);
 		*buf += len;
 	}
 }
@@ -339,7 +371,9 @@ static void aux_write(struct nand_chip *chip, const u8 **buf, int len, int *pos)
 		/* skip over "len" bytes */
 		nand_change_write_column_op(chip, *pos, NULL, 0, false);
 	} else {
-		tango_write_buf(chip, *buf, len);
+		struct tango_chip *tchip = to_tango_chip(chip);
+
+		iowrite8_rep(tchip->base + PBUS_DATA, *buf, len);
 		*buf += len;
 	}
 }
@@ -420,6 +454,7 @@ static void raw_write(struct nand_chip *chip, const u8 *buf, const u8 *oob)
 static int tango_read_page_raw(struct nand_chip *chip, u8 *buf,
 			       int oob_required, int page)
 {
+	tango_select_target(chip, chip->cur_cs);
 	nand_read_page_op(chip, page, 0, NULL, 0);
 	raw_read(chip, buf, chip->oob_poi);
 	return 0;
@@ -428,6 +463,7 @@ static int tango_read_page_raw(struct nand_chip *chip, u8 *buf,
 static int tango_write_page_raw(struct nand_chip *chip, const u8 *buf,
 				int oob_required, int page)
 {
+	tango_select_target(chip, chip->cur_cs);
 	nand_prog_page_begin_op(chip, page, 0, NULL, 0);
 	raw_write(chip, buf, chip->oob_poi);
 	return nand_prog_page_end_op(chip);
@@ -435,6 +471,7 @@ static int tango_write_page_raw(struct nand_chip *chip, const u8 *buf,
 
 static int tango_read_oob(struct nand_chip *chip, int page)
 {
+	tango_select_target(chip, chip->cur_cs);
 	nand_read_page_op(chip, page, 0, NULL, 0);
 	raw_read(chip, NULL, chip->oob_poi);
 	return 0;
@@ -442,6 +479,7 @@ static int tango_read_oob(struct nand_chip *chip, int page)
 
 static int tango_write_oob(struct nand_chip *chip, int page)
 {
+	tango_select_target(chip, chip->cur_cs);
 	nand_prog_page_begin_op(chip, page, 0, NULL, 0);
 	raw_write(chip, NULL, chip->oob_poi);
 	return nand_prog_page_end_op(chip);
@@ -477,7 +515,7 @@ static u32 to_ticks(int kHz, int ps)
 }
 
 static int tango_set_timings(struct nand_chip *chip, int csline,
-			     const struct nand_data_interface *conf)
+			     const struct nand_interface_config *conf)
 {
 	const struct nand_sdr_timings *sdr = nand_get_sdr_timings(conf);
 	struct tango_nfc *nfc = to_tango_nfc(chip->controller);
@@ -527,7 +565,8 @@ static int tango_attach_chip(struct nand_chip *chip)
 
 static const struct nand_controller_ops tango_controller_ops = {
 	.attach_chip = tango_attach_chip,
-	.setup_data_interface = tango_set_timings,
+	.setup_interface = tango_set_timings,
+	.exec_op = tango_exec_op,
 };
 
 static int chip_init(struct device *dev, struct device_node *np)
@@ -562,12 +601,6 @@ static int chip_init(struct device *dev, struct device_node *np)
 	ecc = &chip->ecc;
 	mtd = nand_to_mtd(chip);
 
-	chip->legacy.read_byte = tango_read_byte;
-	chip->legacy.write_buf = tango_write_buf;
-	chip->legacy.read_buf = tango_read_buf;
-	chip->legacy.select_chip = tango_select_chip;
-	chip->legacy.cmd_ctrl = tango_cmd_ctrl;
-	chip->legacy.dev_ready = tango_dev_ready;
 	chip->options = NAND_USES_DMA |
 			NAND_NO_SUBPAGE_WRITE |
 			NAND_WAIT_TCCS;