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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-27 14:17:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-27 14:17:15 -0700
commit4cae85bed43d890f840019e2d21e39f96430802a (patch)
treef880ab3768cd84e8f72923bef8fb235567fff20f
parentc61b49c79e1c1d4bc0c2fdc053ef56e65759b5fd (diff)
parent507e617440d70bc4269daac1b0ee96671bf2761a (diff)
downloadlinux-4cae85bed43d890f840019e2d21e39f96430802a.tar.gz
Merge tag 'for-linus-20160527' of git://git.infradead.org/linux-mtd
Pull MTD fixes from Brian Norris: "We've already noticed a few flaws in the MTD work for v4.7-rc1: - The Atmel folks got ahead of themselves on trying to support their latest hardware and were working off incorrect documentation. Fix up the NAND driver to get this correct. - Fix up device tree example documentation to use the latest recommendations for describing NAND ECC algorithms" * tag 'for-linus-20160527' of git://git.infradead.org/linux-mtd: Documentation: dt: mtd: drop "soft_bch" from example Revert "mtd: atmel_nand: Support variable RB_EDGE interrupts"
-rw-r--r--Documentation/devicetree/bindings/mtd/atmel-nand.txt2
-rw-r--r--Documentation/devicetree/bindings/mtd/nand.txt3
-rw-r--r--drivers/mtd/nand/atmel_nand.c35
-rw-r--r--drivers/mtd/nand/atmel_nand_nfc.h3
4 files changed, 12 insertions, 31 deletions
diff --git a/Documentation/devicetree/bindings/mtd/atmel-nand.txt b/Documentation/devicetree/bindings/mtd/atmel-nand.txt
index d53aba98fbc9..3e7ee99d3949 100644
--- a/Documentation/devicetree/bindings/mtd/atmel-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/atmel-nand.txt
@@ -39,7 +39,7 @@ Optional properties:
Nand Flash Controller(NFC) is an optional sub-node
Required properties:
-- compatible : "atmel,sama5d3-nfc" or "atmel,sama5d4-nfc".
+- compatible : "atmel,sama5d3-nfc".
- reg : should specify the address and size used for NFC command registers,
NFC registers and NFC SRAM. NFC SRAM address and size can be absent
if don't want to use it.
diff --git a/Documentation/devicetree/bindings/mtd/nand.txt b/Documentation/devicetree/bindings/mtd/nand.txt
index 68342eac2383..3733300de8dd 100644
--- a/Documentation/devicetree/bindings/mtd/nand.txt
+++ b/Documentation/devicetree/bindings/mtd/nand.txt
@@ -53,7 +53,8 @@ Example:
nand@0 {
reg = <0>;
- nand-ecc-mode = "soft_bch";
+ nand-ecc-mode = "soft";
+ nand-ecc-algo = "bch";
/* controller specific properties */
};
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index efc8ea250c1d..68b9160108c9 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -67,10 +67,6 @@ struct atmel_nand_caps {
uint8_t pmecc_max_correction;
};
-struct atmel_nand_nfc_caps {
- uint32_t rb_mask;
-};
-
/*
* oob layout for large page size
* bad block info is on bytes 0 and 1
@@ -129,7 +125,6 @@ struct atmel_nfc {
/* Point to the sram bank which include readed data via NFC */
void *data_in_sram;
bool will_write_sram;
- const struct atmel_nand_nfc_caps *caps;
};
static struct atmel_nfc nand_nfc;
@@ -1715,9 +1710,9 @@ static irqreturn_t hsmc_interrupt(int irq, void *dev_id)
nfc_writel(host->nfc->hsmc_regs, IDR, NFC_SR_XFR_DONE);
ret = IRQ_HANDLED;
}
- if (pending & host->nfc->caps->rb_mask) {
+ if (pending & NFC_SR_RB_EDGE) {
complete(&host->nfc->comp_ready);
- nfc_writel(host->nfc->hsmc_regs, IDR, host->nfc->caps->rb_mask);
+ nfc_writel(host->nfc->hsmc_regs, IDR, NFC_SR_RB_EDGE);
ret = IRQ_HANDLED;
}
if (pending & NFC_SR_CMD_DONE) {
@@ -1735,7 +1730,7 @@ static void nfc_prepare_interrupt(struct atmel_nand_host *host, u32 flag)
if (flag & NFC_SR_XFR_DONE)
init_completion(&host->nfc->comp_xfer_done);
- if (flag & host->nfc->caps->rb_mask)
+ if (flag & NFC_SR_RB_EDGE)
init_completion(&host->nfc->comp_ready);
if (flag & NFC_SR_CMD_DONE)
@@ -1753,7 +1748,7 @@ static int nfc_wait_interrupt(struct atmel_nand_host *host, u32 flag)
if (flag & NFC_SR_XFR_DONE)
comp[index++] = &host->nfc->comp_xfer_done;
- if (flag & host->nfc->caps->rb_mask)
+ if (flag & NFC_SR_RB_EDGE)
comp[index++] = &host->nfc->comp_ready;
if (flag & NFC_SR_CMD_DONE)
@@ -1821,7 +1816,7 @@ static int nfc_device_ready(struct mtd_info *mtd)
dev_err(host->dev, "Lost the interrupt flags: 0x%08x\n",
mask & status);
- return status & host->nfc->caps->rb_mask;
+ return status & NFC_SR_RB_EDGE;
}
static void nfc_select_chip(struct mtd_info *mtd, int chip)
@@ -1994,8 +1989,8 @@ static void nfc_nand_command(struct mtd_info *mtd, unsigned int command,
}
/* fall through */
default:
- nfc_prepare_interrupt(host, host->nfc->caps->rb_mask);
- nfc_wait_interrupt(host, host->nfc->caps->rb_mask);
+ nfc_prepare_interrupt(host, NFC_SR_RB_EDGE);
+ nfc_wait_interrupt(host, NFC_SR_RB_EDGE);
}
}
@@ -2426,11 +2421,6 @@ static int atmel_nand_nfc_probe(struct platform_device *pdev)
}
}
- nfc->caps = (const struct atmel_nand_nfc_caps *)
- of_device_get_match_data(&pdev->dev);
- if (!nfc->caps)
- return -ENODEV;
-
nfc_writel(nfc->hsmc_regs, IDR, 0xffffffff);
nfc_readl(nfc->hsmc_regs, SR); /* clear the NFC_SR */
@@ -2459,17 +2449,8 @@ static int atmel_nand_nfc_remove(struct platform_device *pdev)
return 0;
}
-static const struct atmel_nand_nfc_caps sama5d3_nfc_caps = {
- .rb_mask = NFC_SR_RB_EDGE0,
-};
-
-static const struct atmel_nand_nfc_caps sama5d4_nfc_caps = {
- .rb_mask = NFC_SR_RB_EDGE3,
-};
-
static const struct of_device_id atmel_nand_nfc_match[] = {
- { .compatible = "atmel,sama5d3-nfc", .data = &sama5d3_nfc_caps },
- { .compatible = "atmel,sama5d4-nfc", .data = &sama5d4_nfc_caps },
+ { .compatible = "atmel,sama5d3-nfc" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, atmel_nand_nfc_match);
diff --git a/drivers/mtd/nand/atmel_nand_nfc.h b/drivers/mtd/nand/atmel_nand_nfc.h
index 0bbc1fa97dba..4d5d26221a7e 100644
--- a/drivers/mtd/nand/atmel_nand_nfc.h
+++ b/drivers/mtd/nand/atmel_nand_nfc.h
@@ -42,8 +42,7 @@
#define NFC_SR_UNDEF (1 << 21)
#define NFC_SR_AWB (1 << 22)
#define NFC_SR_ASE (1 << 23)
-#define NFC_SR_RB_EDGE0 (1 << 24)
-#define NFC_SR_RB_EDGE3 (1 << 27)
+#define NFC_SR_RB_EDGE (1 << 24)
#define ATMEL_HSMC_NFC_IER 0x0c
#define ATMEL_HSMC_NFC_IDR 0x10