Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:
	drivers/mtd/nand/sh_flctl.c

Maxim's patch to initialise sysfs attributes depends on the patch which
actually adds sysfs_attr_init().

1 files changed, 48 insertions, 19 deletions

diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index dbc09a81866e..88c802cd947f 100644
--- a/drivers/mtd/nand/sh_flctl.c
+++ b/drivers/mtd/nand/sh_flctl.c
@@ -1,10 +1,10 @@
 /*
  * SuperH FLCTL nand controller
  *
- * Copyright © 2008 Renesas Solutions Corp.
- * Copyright © 2008 Atom Create Engineering Co., Ltd.
+ * Copyright (c) 2008 Renesas Solutions Corp.
+ * Copyright (c) 2008 Atom Create Engineering Co., Ltd.
  *
- * Based on fsl_elbc_nand.c, Copyright © 2006-2007 Freescale Semiconductor
+ * Based on fsl_elbc_nand.c, Copyright (c) 2006-2007 Freescale Semiconductor
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -75,6 +75,11 @@ static void start_translation(struct sh_flctl *flctl)
 	writeb(TRSTRT, FLTRCR(flctl));
 }
 
+static void timeout_error(struct sh_flctl *flctl, const char *str)
+{
+	dev_err(&flctl->pdev->dev, "Timeout occured in %s\n", str);
+}
+
 static void wait_completion(struct sh_flctl *flctl)
 {
 	uint32_t timeout = LOOP_TIMEOUT_MAX;
@@ -87,7 +92,7 @@ static void wait_completion(struct sh_flctl *flctl)
 		udelay(1);
 	}
 
-	printk(KERN_ERR "wait_completion(): Timeout occured \n");
+	timeout_error(flctl, __func__);
 	writeb(0x0, FLTRCR(flctl));
 }
 
@@ -100,6 +105,8 @@ static void set_addr(struct mtd_info *mtd, int column, int page_addr)
 		addr = page_addr;	/* ERASE1 */
 	} else if (page_addr != -1) {
 		/* SEQIN, READ0, etc.. */
+		if (flctl->chip.options & NAND_BUSWIDTH_16)
+			column >>= 1;
 		if (flctl->page_size) {
 			addr = column & 0x0FFF;
 			addr |= (page_addr & 0xff) << 16;
@@ -132,7 +139,7 @@ static void wait_rfifo_ready(struct sh_flctl *flctl)
 			return;
 		udelay(1);
 	}
-	printk(KERN_ERR "wait_rfifo_ready(): Timeout occured \n");
+	timeout_error(flctl, __func__);
 }
 
 static void wait_wfifo_ready(struct sh_flctl *flctl)
@@ -146,7 +153,7 @@ static void wait_wfifo_ready(struct sh_flctl *flctl)
 			return;
 		udelay(1);
 	}
-	printk(KERN_ERR "wait_wfifo_ready(): Timeout occured \n");
+	timeout_error(flctl, __func__);
 }
 
 static int wait_recfifo_ready(struct sh_flctl *flctl, int sector_number)
@@ -198,7 +205,7 @@ static int wait_recfifo_ready(struct sh_flctl *flctl, int sector_number)
 		writel(0, FL4ECCCR(flctl));
 	}
 
-	printk(KERN_ERR "wait_recfifo_ready(): Timeout occured \n");
+	timeout_error(flctl, __func__);
 	return 1;	/* timeout */
 }
 
@@ -214,7 +221,7 @@ static void wait_wecfifo_ready(struct sh_flctl *flctl)
 			return;
 		udelay(1);
 	}
-	printk(KERN_ERR "wait_wecfifo_ready(): Timeout occured \n");
+	timeout_error(flctl, __func__);
 }
 
 static void read_datareg(struct sh_flctl *flctl, int offset)
@@ -275,7 +282,7 @@ static void write_fiforeg(struct sh_flctl *flctl, int rlen, int offset)
 static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_val)
 {
 	struct sh_flctl *flctl = mtd_to_flctl(mtd);
-	uint32_t flcmncr_val = readl(FLCMNCR(flctl));
+	uint32_t flcmncr_val = readl(FLCMNCR(flctl)) & ~SEL_16BIT;
 	uint32_t flcmdcr_val, addr_len_bytes = 0;
 
 	/* Set SNAND bit if page size is 2048byte */
@@ -297,6 +304,8 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va
 	case NAND_CMD_READOOB:
 		addr_len_bytes = flctl->rw_ADRCNT;
 		flcmdcr_val |= CDSRC_E;
+		if (flctl->chip.options & NAND_BUSWIDTH_16)
+			flcmncr_val |= SEL_16BIT;
 		break;
 	case NAND_CMD_SEQIN:
 		/* This case is that cmd is READ0 or READ1 or READ00 */
@@ -305,6 +314,8 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va
 	case NAND_CMD_PAGEPROG:
 		addr_len_bytes = flctl->rw_ADRCNT;
 		flcmdcr_val |= DOCMD2_E | CDSRC_E | SELRW;
+		if (flctl->chip.options & NAND_BUSWIDTH_16)
+			flcmncr_val |= SEL_16BIT;
 		break;
 	case NAND_CMD_READID:
 		flcmncr_val &= ~SNAND_E;
@@ -523,6 +534,8 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
 		set_addr(mtd, 0, page_addr);
 
 		flctl->read_bytes = mtd->writesize + mtd->oobsize;
+		if (flctl->chip.options & NAND_BUSWIDTH_16)
+			column >>= 1;
 		flctl->index += column;
 		goto read_normal_exit;
 
@@ -686,6 +699,18 @@ static uint8_t flctl_read_byte(struct mtd_info *mtd)
 	return data;
 }
 
+static uint16_t flctl_read_word(struct mtd_info *mtd)
+{
+       struct sh_flctl *flctl = mtd_to_flctl(mtd);
+       int index = flctl->index;
+       uint16_t data;
+       uint16_t *buf = (uint16_t *)&flctl->done_buff[index];
+
+       data = *buf;
+       flctl->index += 2;
+       return data;
+}
+
 static void flctl_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
 {
 	int i;
@@ -769,38 +794,36 @@ static int flctl_chip_init_tail(struct mtd_info *mtd)
 	return 0;
 }
 
-static int __init flctl_probe(struct platform_device *pdev)
+static int __devinit flctl_probe(struct platform_device *pdev)
 {
 	struct resource *res;
 	struct sh_flctl *flctl;
 	struct mtd_info *flctl_mtd;
 	struct nand_chip *nand;
 	struct sh_flctl_platform_data *pdata;
-	int ret;
+	int ret = -ENXIO;
 
 	pdata = pdev->dev.platform_data;
 	if (pdata == NULL) {
-		printk(KERN_ERR "sh_flctl platform_data not found.\n");
-		return -ENODEV;
+		dev_err(&pdev->dev, "no platform data defined\n");
+		return -EINVAL;
 	}
 
 	flctl = kzalloc(sizeof(struct sh_flctl), GFP_KERNEL);
 	if (!flctl) {
-		printk(KERN_ERR "Unable to allocate NAND MTD dev structure.\n");
+		dev_err(&pdev->dev, "failed to allocate driver data\n");
 		return -ENOMEM;
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
-		printk(KERN_ERR "%s: resource not found.\n", __func__);
-		ret = -ENODEV;
+		dev_err(&pdev->dev, "failed to get I/O memory\n");
 		goto err;
 	}
 
 	flctl->reg = ioremap(res->start, resource_size(res));
 	if (flctl->reg == NULL) {
-		printk(KERN_ERR "%s: ioremap error.\n", __func__);
-		ret = -ENOMEM;
+		dev_err(&pdev->dev, "failed to remap I/O memory\n");
 		goto err;
 	}
 
@@ -808,6 +831,7 @@ static int __init flctl_probe(struct platform_device *pdev)
 	flctl_mtd = &flctl->mtd;
 	nand = &flctl->chip;
 	flctl_mtd->priv = nand;
+	flctl->pdev = pdev;
 	flctl->hwecc = pdata->has_hwecc;
 
 	flctl_register_init(flctl, pdata->flcmncr_val);
@@ -825,6 +849,11 @@ static int __init flctl_probe(struct platform_device *pdev)
 	nand->select_chip = flctl_select_chip;
 	nand->cmdfunc = flctl_cmdfunc;
 
+	if (pdata->flcmncr_val & SEL_16BIT) {
+		nand->options |= NAND_BUSWIDTH_16;
+		nand->read_word = flctl_read_word;
+	}
+
 	ret = nand_scan_ident(flctl_mtd, 1, NULL);
 	if (ret)
 		goto err;
@@ -846,7 +875,7 @@ err:
 	return ret;
 }
 
-static int __exit flctl_remove(struct platform_device *pdev)
+static int __devexit flctl_remove(struct platform_device *pdev)
 {
 	struct sh_flctl *flctl = platform_get_drvdata(pdev);