From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: linux-mtd@lists.infradead.org
Cc: Vignesh Raghavendra <vigneshr@ti.com>,
Dinh Nguyen <dinguyen@kernel.org>,
Richard Weinberger <richard@nod.at>,
linux-kernel@vger.kernel.org,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Brian Norris <computersforpeace@gmail.com>,
David Woodhouse <dwmw2@infradead.org>,
Marek Vasut <marek.vasut@gmail.com>
Subject: [PATCH] mtd: rawnand: denali: remove the old unified controller/chip DT support
Date: Mon, 21 Oct 2019 11:26:54 +0900 [thread overview]
Message-ID: <20191021022654.13886-1-yamada.masahiro@socionext.com> (raw)
Commit d8e8fd0ebf8b ("mtd: rawnand: denali: decouple controller and
NAND chips") supported the new binding for the separate controller/chip
representation, keeping the backward compatibility.
All the device trees in upstream migrated to the new binding.
Remove the support for the old binding.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
drivers/mtd/nand/raw/denali_dt.c | 55 +++-----------------------------
1 file changed, 4 insertions(+), 51 deletions(-)
diff --git a/drivers/mtd/nand/raw/denali_dt.c b/drivers/mtd/nand/raw/denali_dt.c
index 5e14836f6bd5..4cce9ae33b8e 100644
--- a/drivers/mtd/nand/raw/denali_dt.c
+++ b/drivers/mtd/nand/raw/denali_dt.c
@@ -102,47 +102,6 @@ static int denali_dt_chip_init(struct denali_controller *denali,
return denali_chip_init(denali, dchip);
}
-/* Backward compatibility for old platforms */
-static int denali_dt_legacy_chip_init(struct denali_controller *denali)
-{
- struct denali_chip *dchip;
- int nsels, i;
-
- nsels = denali->nbanks;
-
- dchip = devm_kzalloc(denali->dev, struct_size(dchip, sels, nsels),
- GFP_KERNEL);
- if (!dchip)
- return -ENOMEM;
-
- dchip->nsels = nsels;
-
- for (i = 0; i < nsels; i++)
- dchip->sels[i].bank = i;
-
- nand_set_flash_node(&dchip->chip, denali->dev->of_node);
-
- return denali_chip_init(denali, dchip);
-}
-
-/*
- * Check the DT binding.
- * The new binding expects chip subnodes in the controller node.
- * So, #address-cells = <1>; #size-cells = <0>; are required.
- * Check the #size-cells to distinguish the binding.
- */
-static bool denali_dt_is_legacy_binding(struct device_node *np)
-{
- u32 cells;
- int ret;
-
- ret = of_property_read_u32(np, "#size-cells", &cells);
- if (ret)
- return true;
-
- return cells != 0;
-}
-
static int denali_dt_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -213,17 +172,11 @@ static int denali_dt_probe(struct platform_device *pdev)
if (ret)
goto out_disable_clk_ecc;
- if (denali_dt_is_legacy_binding(dev->of_node)) {
- ret = denali_dt_legacy_chip_init(denali);
- if (ret)
+ for_each_child_of_node(dev->of_node, np) {
+ ret = denali_dt_chip_init(denali, np);
+ if (ret) {
+ of_node_put(np);
goto out_remove_denali;
- } else {
- for_each_child_of_node(dev->of_node, np) {
- ret = denali_dt_chip_init(denali, np);
- if (ret) {
- of_node_put(np);
- goto out_remove_denali;
- }
}
}
--
2.17.1
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next reply other threads:[~2019-10-21 2:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-21 2:26 Masahiro Yamada [this message]
2019-10-30 8:24 ` [PATCH] mtd: rawnand: denali: remove the old unified controller/chip DT support Miquel Raynal
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