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From: John Ogness <john.ogness@linutronix.de>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Baruch Siach <baruch@tkos.co.il>,
	linux-mtd@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	Ivo Clarysse <ivo.clarysse@gmail.com>
Subject: [PATCH 1/3] mxc_nand: set spare size and pages per block
Date: Tue, 10 Aug 2010 13:34:07 +0200	[thread overview]
Message-ID: <80r5i63dn4.fsf@merkur.tec.linutronix.de> (raw)

This patch sets the NFC registers for spare size and pages per block.

This patch is against the latest patches from Sascha Hauer.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
---
 drivers/mtd/nand/mxc_nand.c |   32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

Index: linux-2.6-454a740/drivers/mtd/nand/mxc_nand.c
===================================================================
--- linux-2.6-454a740.orig/drivers/mtd/nand/mxc_nand.c
+++ linux-2.6-454a740/drivers/mtd/nand/mxc_nand.c
@@ -68,6 +68,8 @@
 #define NFC_V1_V2_CONFIG1_RST		(1 << 6)
 #define NFC_V1_V2_CONFIG1_CE		(1 << 7)
 #define NFC_V1_V2_CONFIG1_ONE_CYCLE	(1 << 8)
+#define NFC_V1_V2_CONFIG1_PPB_SHIFT	9
+#define NFC_V1_V2_CONFIG1_PPB_MASK	0x3
 
 #define NFC_V1_V2_CONFIG2_INT		(1 << 15)
 
@@ -749,7 +751,37 @@ static void preset_v1_v2(struct mtd_info
 		host->eccsize = 1;
 	}
 
+	if (nfc_is_v21() && mtd->writesize) {
+		/* setup pages per block */
+		tmp &= ~(NFC_V1_V2_CONFIG1_PPB_MASK <<
+					NFC_V1_V2_CONFIG1_PPB_SHIFT);
+		switch (mtd->erasesize / mtd->writesize) {
+		case 32:
+			/* PPB set to 0 */
+			break;
+		case 64:
+			tmp |= 1 << NFC_V1_V2_CONFIG1_PPB_SHIFT;
+			break;
+		case 256:
+			tmp |= 3 << NFC_V1_V2_CONFIG1_PPB_SHIFT;
+			break;
+		default:
+			/* 128 (reset value) */
+			tmp |= 2 << NFC_V1_V2_CONFIG1_PPB_SHIFT;
+			break;
+		}
+	}
+
 	writew(tmp, NFC_V1_V2_CONFIG1);
+
+	if (nfc_is_v21()) {
+		/* configure spare size (in 16-bit units) */
+		tmp = readw(NFC_V1_V2_RSLTSPARE_AREA);
+		tmp &= ~0xff;
+		tmp |= host->spare_len >> 1;
+		writew(tmp, NFC_V1_V2_RSLTSPARE_AREA);
+	}
+
 	/* preset operation */
 
 	/* Unlock the internal RAM Buffer */

WARNING: multiple messages have this Message-ID (diff)
From: john.ogness@linutronix.de (John Ogness)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] mxc_nand: set spare size and pages per block
Date: Tue, 10 Aug 2010 13:34:07 +0200	[thread overview]
Message-ID: <80r5i63dn4.fsf@merkur.tec.linutronix.de> (raw)

This patch sets the NFC registers for spare size and pages per block.

This patch is against the latest patches from Sascha Hauer.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
---
 drivers/mtd/nand/mxc_nand.c |   32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

Index: linux-2.6-454a740/drivers/mtd/nand/mxc_nand.c
===================================================================
--- linux-2.6-454a740.orig/drivers/mtd/nand/mxc_nand.c
+++ linux-2.6-454a740/drivers/mtd/nand/mxc_nand.c
@@ -68,6 +68,8 @@
 #define NFC_V1_V2_CONFIG1_RST		(1 << 6)
 #define NFC_V1_V2_CONFIG1_CE		(1 << 7)
 #define NFC_V1_V2_CONFIG1_ONE_CYCLE	(1 << 8)
+#define NFC_V1_V2_CONFIG1_PPB_SHIFT	9
+#define NFC_V1_V2_CONFIG1_PPB_MASK	0x3
 
 #define NFC_V1_V2_CONFIG2_INT		(1 << 15)
 
@@ -749,7 +751,37 @@ static void preset_v1_v2(struct mtd_info
 		host->eccsize = 1;
 	}
 
+	if (nfc_is_v21() && mtd->writesize) {
+		/* setup pages per block */
+		tmp &= ~(NFC_V1_V2_CONFIG1_PPB_MASK <<
+					NFC_V1_V2_CONFIG1_PPB_SHIFT);
+		switch (mtd->erasesize / mtd->writesize) {
+		case 32:
+			/* PPB set to 0 */
+			break;
+		case 64:
+			tmp |= 1 << NFC_V1_V2_CONFIG1_PPB_SHIFT;
+			break;
+		case 256:
+			tmp |= 3 << NFC_V1_V2_CONFIG1_PPB_SHIFT;
+			break;
+		default:
+			/* 128 (reset value) */
+			tmp |= 2 << NFC_V1_V2_CONFIG1_PPB_SHIFT;
+			break;
+		}
+	}
+
 	writew(tmp, NFC_V1_V2_CONFIG1);
+
+	if (nfc_is_v21()) {
+		/* configure spare size (in 16-bit units) */
+		tmp = readw(NFC_V1_V2_RSLTSPARE_AREA);
+		tmp &= ~0xff;
+		tmp |= host->spare_len >> 1;
+		writew(tmp, NFC_V1_V2_RSLTSPARE_AREA);
+	}
+
 	/* preset operation */
 
 	/* Unlock the internal RAM Buffer */

             reply	other threads:[~2010-08-10 11:34 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-10 11:34 John Ogness [this message]
2010-08-10 11:34 ` [PATCH 1/3] mxc_nand: set spare size and pages per block John Ogness
2010-08-10 11:35 ` [PATCH 2/3] mxc_nand: remove unused variables John Ogness
2010-08-10 11:35   ` John Ogness
2010-08-10 11:36   ` [PATCH 3/3] mxc_nand: mask instead of disabling (i.MX21 as exception) John Ogness
2010-08-10 11:36     ` John Ogness
2010-08-10 12:19 ` [PATCH 1/3] mxc_nand: set spare size and pages per block Sascha Hauer
2010-08-10 12:19   ` Sascha Hauer
2010-08-10 14:31   ` John Ogness
2010-08-10 14:31     ` John Ogness
2010-08-10 14:43     ` John Ogness
2010-08-10 14:43       ` John Ogness
2010-08-11 12:56     ` Sascha Hauer
2010-08-11 12:56       ` Sascha Hauer
2010-08-11 13:16       ` John Ogness
2010-08-11 13:16         ` John Ogness
2010-08-11 13:27         ` Sascha Hauer
2010-08-11 13:27           ` Sascha Hauer
2010-08-16 11:28         ` Sascha Hauer
2010-08-16 11:28           ` Sascha Hauer
2010-08-16 12:05           ` John Ogness
2010-08-16 12:05             ` John Ogness
2010-08-17  8:54             ` Sascha Hauer
2010-08-17  8:54               ` Sascha Hauer
2010-08-17 17:02               ` John Ogness
2010-08-17 17:02                 ` John Ogness
2010-08-29 12:08 ` Artem Bityutskiy
2010-08-29 12:08   ` Artem Bityutskiy

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