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path: root/drivers/mtd/nand/sh_flctl.c
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Diffstat (limited to 'drivers/mtd/nand/sh_flctl.c')
-rw-r--r--drivers/mtd/nand/sh_flctl.c42
1 files changed, 23 insertions, 19 deletions
diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index 02bef21f2e4..ab068a503b2 100644
--- a/drivers/mtd/nand/sh_flctl.c
+++ b/drivers/mtd/nand/sh_flctl.c
@@ -1,10 +1,10 @@
1/* 1/*
2 * SuperH FLCTL nand controller 2 * SuperH FLCTL nand controller
3 * 3 *
4 * Copyright © 2008 Renesas Solutions Corp. 4 * Copyright (c) 2008 Renesas Solutions Corp.
5 * Copyright © 2008 Atom Create Engineering Co., Ltd. 5 * Copyright (c) 2008 Atom Create Engineering Co., Ltd.
6 * 6 *
7 * Based on fsl_elbc_nand.c, Copyright © 2006-2007 Freescale Semiconductor 7 * Based on fsl_elbc_nand.c, Copyright (c) 2006-2007 Freescale Semiconductor
8 * 8 *
9 * This program is free software; you can redistribute it and/or modify 9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by 10 * 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)
75 writeb(TRSTRT, FLTRCR(flctl)); 75 writeb(TRSTRT, FLTRCR(flctl));
76} 76}
77 77
78static void timeout_error(struct sh_flctl *flctl, const char *str)
79{
80 dev_err(&flctl->pdev->dev, "Timeout occured in %s\n", str);
81}
82
78static void wait_completion(struct sh_flctl *flctl) 83static void wait_completion(struct sh_flctl *flctl)
79{ 84{
80 uint32_t timeout = LOOP_TIMEOUT_MAX; 85 uint32_t timeout = LOOP_TIMEOUT_MAX;
@@ -87,7 +92,7 @@ static void wait_completion(struct sh_flctl *flctl)
87 udelay(1); 92 udelay(1);
88 } 93 }
89 94
90 printk(KERN_ERR "wait_completion(): Timeout occured \n"); 95 timeout_error(flctl, __func__);
91 writeb(0x0, FLTRCR(flctl)); 96 writeb(0x0, FLTRCR(flctl));
92} 97}
93 98
@@ -132,7 +137,7 @@ static void wait_rfifo_ready(struct sh_flctl *flctl)
132 return; 137 return;
133 udelay(1); 138 udelay(1);
134 } 139 }
135 printk(KERN_ERR "wait_rfifo_ready(): Timeout occured \n"); 140 timeout_error(flctl, __func__);
136} 141}
137 142
138static void wait_wfifo_ready(struct sh_flctl *flctl) 143static void wait_wfifo_ready(struct sh_flctl *flctl)
@@ -146,7 +151,7 @@ static void wait_wfifo_ready(struct sh_flctl *flctl)
146 return; 151 return;
147 udelay(1); 152 udelay(1);
148 } 153 }
149 printk(KERN_ERR "wait_wfifo_ready(): Timeout occured \n"); 154 timeout_error(flctl, __func__);
150} 155}
151 156
152static int wait_recfifo_ready(struct sh_flctl *flctl, int sector_number) 157static int wait_recfifo_ready(struct sh_flctl *flctl, int sector_number)
@@ -198,7 +203,7 @@ static int wait_recfifo_ready(struct sh_flctl *flctl, int sector_number)
198 writel(0, FL4ECCCR(flctl)); 203 writel(0, FL4ECCCR(flctl));
199 } 204 }
200 205
201 printk(KERN_ERR "wait_recfifo_ready(): Timeout occured \n"); 206 timeout_error(flctl, __func__);
202 return 1; /* timeout */ 207 return 1; /* timeout */
203} 208}
204 209
@@ -214,7 +219,7 @@ static void wait_wecfifo_ready(struct sh_flctl *flctl)
214 return; 219 return;
215 udelay(1); 220 udelay(1);
216 } 221 }
217 printk(KERN_ERR "wait_wecfifo_ready(): Timeout occured \n"); 222 timeout_error(flctl, __func__);
218} 223}
219 224
220static void read_datareg(struct sh_flctl *flctl, int offset) 225static void read_datareg(struct sh_flctl *flctl, int offset)
@@ -769,38 +774,36 @@ static int flctl_chip_init_tail(struct mtd_info *mtd)
769 return 0; 774 return 0;
770} 775}
771 776
772static int __init flctl_probe(struct platform_device *pdev) 777static int __devinit flctl_probe(struct platform_device *pdev)
773{ 778{
774 struct resource *res; 779 struct resource *res;
775 struct sh_flctl *flctl; 780 struct sh_flctl *flctl;
776 struct mtd_info *flctl_mtd; 781 struct mtd_info *flctl_mtd;
777 struct nand_chip *nand; 782 struct nand_chip *nand;
778 struct sh_flctl_platform_data *pdata; 783 struct sh_flctl_platform_data *pdata;
779 int ret; 784 int ret = -ENXIO;
780 785
781 pdata = pdev->dev.platform_data; 786 pdata = pdev->dev.platform_data;
782 if (pdata == NULL) { 787 if (pdata == NULL) {
783 printk(KERN_ERR "sh_flctl platform_data not found.\n"); 788 dev_err(&pdev->dev, "no platform data defined\n");
784 return -ENODEV; 789 return -EINVAL;
785 } 790 }
786 791
787 flctl = kzalloc(sizeof(struct sh_flctl), GFP_KERNEL); 792 flctl = kzalloc(sizeof(struct sh_flctl), GFP_KERNEL);
788 if (!flctl) { 793 if (!flctl) {
789 printk(KERN_ERR "Unable to allocate NAND MTD dev structure.\n"); 794 dev_err(&pdev->dev, "failed to allocate driver data\n");
790 return -ENOMEM; 795 return -ENOMEM;
791 } 796 }
792 797
793 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 798 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
794 if (!res) { 799 if (!res) {
795 printk(KERN_ERR "%s: resource not found.\n", __func__); 800 dev_err(&pdev->dev, "failed to get I/O memory\n");
796 ret = -ENODEV;
797 goto err; 801 goto err;
798 } 802 }
799 803
800 flctl->reg = ioremap(res->start, res->end - res->start + 1); 804 flctl->reg = ioremap(res->start, resource_size(res));
801 if (flctl->reg == NULL) { 805 if (flctl->reg == NULL) {
802 printk(KERN_ERR "%s: ioremap error.\n", __func__); 806 dev_err(&pdev->dev, "failed to remap I/O memory\n");
803 ret = -ENOMEM;
804 goto err; 807 goto err;
805 } 808 }
806 809
@@ -808,6 +811,7 @@ static int __init flctl_probe(struct platform_device *pdev)
808 flctl_mtd = &flctl->mtd; 811 flctl_mtd = &flctl->mtd;
809 nand = &flctl->chip; 812 nand = &flctl->chip;
810 flctl_mtd->priv = nand; 813 flctl_mtd->priv = nand;
814 flctl->pdev = pdev;
811 flctl->hwecc = pdata->has_hwecc; 815 flctl->hwecc = pdata->has_hwecc;
812 816
813 flctl_register_init(flctl, pdata->flcmncr_val); 817 flctl_register_init(flctl, pdata->flcmncr_val);
@@ -846,7 +850,7 @@ err:
846 return ret; 850 return ret;
847} 851}
848 852
849static int __exit flctl_remove(struct platform_device *pdev) 853static int __devexit flctl_remove(struct platform_device *pdev)
850{ 854{
851 struct sh_flctl *flctl = platform_get_drvdata(pdev); 855 struct sh_flctl *flctl = platform_get_drvdata(pdev);
852 856