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Subject[PATCH v4 08/35] mtd: rawnand: gpmi: 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/gpmi-nand/gpmi-nand.c | 56 ++++++++++++++++++------------
1 file changed, 33 insertions(+), 23 deletions(-)

diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index 6294d018df65..1c1ebbc82824 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -744,9 +744,9 @@ static int gpmi_alloc_dma_buffer(struct gpmi_nand_data *this)
* [2] Allocate a read/write data buffer.
* The gpmi_alloc_dma_buffer can be called twice.
* We allocate a PAGE_SIZE length buffer if gpmi_alloc_dma_buffer
- * is called before the nand_scan_ident; and we allocate a buffer
- * of the real NAND page size when the gpmi_alloc_dma_buffer is
- * called after the nand_scan_ident.
+ * is called before the NAND identification; and we allocate a
+ * buffer of the real NAND page size when the gpmi_alloc_dma_buffer
+ * is called after.
*/
this->data_buffer_dma = kzalloc(mtd->writesize ?: PAGE_SIZE,
GFP_DMA | GFP_KERNEL);
@@ -1865,6 +1865,34 @@ static int gpmi_init_last(struct gpmi_nand_data *this)
return 0;
}

+static int gpmi_nand_attach_chip(struct nand_chip *chip)
+{
+ struct gpmi_nand_data *this = nand_get_controller_data(chip);
+ int ret;
+
+ if (chip->bbt_options & NAND_BBT_USE_FLASH) {
+ chip->bbt_options |= NAND_BBT_NO_OOB;
+
+ if (of_property_read_bool(this->dev->of_node,
+ "fsl,no-blockmark-swap"))
+ this->swap_block_mark = false;
+ }
+ dev_dbg(this->dev, "Blockmark swapping %sabled\n",
+ this->swap_block_mark ? "en" : "dis");
+
+ ret = gpmi_init_last(this);
+ if (ret)
+ return ret;
+
+ chip->options |= NAND_SKIP_BBTSCAN;
+
+ return 0;
+}
+
+static const struct nand_controller_ops gpmi_nand_controller_ops = {
+ .attach_chip = gpmi_nand_attach_chip,
+};
+
static int gpmi_nand_init(struct gpmi_nand_data *this)
{
struct nand_chip *chip = &this->nand;
@@ -1905,26 +1933,8 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
if (ret)
goto err_out;

- ret = nand_scan_ident(mtd, GPMI_IS_MX6(this) ? 2 : 1, NULL);
- if (ret)
- goto err_out;
-
- if (chip->bbt_options & NAND_BBT_USE_FLASH) {
- chip->bbt_options |= NAND_BBT_NO_OOB;
-
- if (of_property_read_bool(this->dev->of_node,
- "fsl,no-blockmark-swap"))
- this->swap_block_mark = false;
- }
- dev_dbg(this->dev, "Blockmark swapping %sabled\n",
- this->swap_block_mark ? "en" : "dis");
-
- ret = gpmi_init_last(this);
- if (ret)
- goto err_out;
-
- chip->options |= NAND_SKIP_BBTSCAN;
- ret = nand_scan_tail(mtd);
+ chip->dummy_controller.ops = &gpmi_nand_controller_ops;
+ ret = nand_scan(mtd, GPMI_IS_MX6(this) ? 2 : 1);
if (ret)
goto err_out;

--
2.14.1
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