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Subject[PATCH v4 01/35] mtd: rawnand: brcmnand: convert driver to nand_scan()
Date
Two helpers have been added to the core to make ECC-related
configuration between the detection phase and the final NAND scan. Use
these hooks and convert the driver to just use nand_scan() instead of
both nand_scan_ident() and nand_scan_tail().

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/nand/raw/brcmnand/brcmnand.c | 47 +++++++++++++++++++-------------
1 file changed, 28 insertions(+), 19 deletions(-)

diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index 2e5efa0f9ea2..071f09af56dc 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -2208,6 +2208,32 @@ static int brcmnand_setup_dev(struct brcmnand_host *host)
return 0;
}

+static int brcmnand_attach_chip(struct nand_chip *chip)
+{
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ struct brcmnand_host *host = nand_get_controller_data(chip);
+ int ret;
+
+ if (chip->bbt_options & NAND_BBT_USE_FLASH)
+ chip->bbt_options |= NAND_BBT_NO_OOB;
+
+ if (brcmnand_setup_dev(host))
+ return -ENXIO;
+
+ chip->ecc.size = host->hwcfg.sector_size_1k ? 1024 : 512;
+
+ /* only use our internal HW threshold */
+ mtd->bitflip_threshold = 1;
+
+ ret = brcmstb_choose_ecc_layout(host);
+
+ return ret;
+}
+
+static const struct nand_controller_ops brcmnand_controller_ops = {
+ .attach_chip = brcmnand_attach_chip,
+};
+
static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn)
{
struct brcmnand_controller *ctrl = host->ctrl;
@@ -2267,10 +2293,6 @@ static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn)
nand_writereg(ctrl, cfg_offs,
nand_readreg(ctrl, cfg_offs) & ~CFG_BUS_WIDTH);

- ret = nand_scan_ident(mtd, 1, NULL);
- if (ret)
- return ret;
-
chip->options |= NAND_NO_SUBPAGE_WRITE;
/*
* Avoid (for instance) kmap()'d buffers from JFFS2, which we can't DMA
@@ -2279,21 +2301,7 @@ static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn)
*/
chip->options |= NAND_USE_BOUNCE_BUFFER;

- if (chip->bbt_options & NAND_BBT_USE_FLASH)
- chip->bbt_options |= NAND_BBT_NO_OOB;
-
- if (brcmnand_setup_dev(host))
- return -ENXIO;
-
- chip->ecc.size = host->hwcfg.sector_size_1k ? 1024 : 512;
- /* only use our internal HW threshold */
- mtd->bitflip_threshold = 1;
-
- ret = brcmstb_choose_ecc_layout(host);
- if (ret)
- return ret;
-
- ret = nand_scan_tail(mtd);
+ ret = nand_scan(mtd, 1);
if (ret)
return ret;

@@ -2434,6 +2442,7 @@ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc)
init_completion(&ctrl->done);
init_completion(&ctrl->dma_done);
nand_controller_init(&ctrl->controller);
+ ctrl->controller.ops = &brcmnand_controller_ops;
INIT_LIST_HEAD(&ctrl->host_list);

/* NAND register range */
--
2.14.1
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