/* linux/drivers/mtd/nand/bf5xx_nand.c
*
- * Copyright 2006-2007 Analog Devices Inc.
+ * Copyright 2006-2008 Analog Devices Inc.
* http://blackfin.uclinux.org/
* Bryan Wu <bryan.wu@analog.com>
*
static int hardware_ecc;
#endif
-static unsigned short bfin_nfc_pin_req[] = {P_NAND_CE, P_NAND_RB, 0};
+static const unsigned short bfin_nfc_pin_req[] =
+ {P_NAND_CE,
+ P_NAND_RB,
+ P_NAND_D0,
+ P_NAND_D1,
+ P_NAND_D2,
+ P_NAND_D3,
+ P_NAND_D4,
+ P_NAND_D5,
+ P_NAND_D6,
+ P_NAND_D7,
+ P_NAND_WE,
+ P_NAND_RE,
+ P_NAND_CLE,
+ P_NAND_ALE,
+ 0};
+
+#ifdef CONFIG_MTD_NAND_BF5XX_BOOTROM_ECC
+static uint8_t bbt_pattern[] = { 0xff };
+
+static struct nand_bbt_descr bootrom_bbt = {
+ .options = 0,
+ .offs = 63,
+ .len = 1,
+ .pattern = bbt_pattern,
+};
+
+static struct nand_ecclayout bootrom_ecclayout = {
+ .eccbytes = 24,
+ .eccpos = {
+ 0x8 * 0, 0x8 * 0 + 1, 0x8 * 0 + 2,
+ 0x8 * 1, 0x8 * 1 + 1, 0x8 * 1 + 2,
+ 0x8 * 2, 0x8 * 2 + 1, 0x8 * 2 + 2,
+ 0x8 * 3, 0x8 * 3 + 1, 0x8 * 3 + 2,
+ 0x8 * 4, 0x8 * 4 + 1, 0x8 * 4 + 2,
+ 0x8 * 5, 0x8 * 5 + 1, 0x8 * 5 + 2,
+ 0x8 * 6, 0x8 * 6 + 1, 0x8 * 6 + 2,
+ 0x8 * 7, 0x8 * 7 + 1, 0x8 * 7 + 2
+ },
+ .oobfree = {
+ { 0x8 * 0 + 3, 5 },
+ { 0x8 * 1 + 3, 5 },
+ { 0x8 * 2 + 3, 5 },
+ { 0x8 * 3 + 3, 5 },
+ { 0x8 * 4 + 3, 5 },
+ { 0x8 * 5 + 3, 5 },
+ { 0x8 * 6 + 3, 5 },
+ { 0x8 * 7 + 3, 5 },
+ }
+};
+#endif
/*
* Data structures for bf5xx nand flash controller driver
dat += 256;
read_ecc += 8;
calc_ecc += 8;
- ret = bf5xx_nand_correct_data_256(mtd, dat, read_ecc, calc_ecc);
+ ret |= bf5xx_nand_correct_data_256(mtd, dat, read_ecc, calc_ecc);
}
return ret;
u16 ecc0, ecc1;
u32 code[2];
u8 *p;
- int bytes = 3, i;
/* first 4 bytes ECC code for 256 page size */
ecc0 = bfin_read_NFC_ECC0();
ecc1 = bfin_read_NFC_ECC1();
- code[0] = (ecc0 & 0x3FF) | ((ecc1 & 0x3FF) << 11);
+ code[0] = (ecc0 & 0x7ff) | ((ecc1 & 0x7ff) << 11);
dev_dbg(info->device, "returning ecc 0x%08x\n", code[0]);
+ /* first 3 bytes in ecc_code for 256 page size */
+ p = (u8 *) code;
+ memcpy(ecc_code, p, 3);
+
/* second 4 bytes ECC code for 512 page size */
if (page_size == 512) {
ecc0 = bfin_read_NFC_ECC2();
ecc1 = bfin_read_NFC_ECC3();
- code[1] = (ecc0 & 0x3FF) | ((ecc1 & 0x3FF) << 11);
- bytes = 6;
+ code[1] = (ecc0 & 0x7ff) | ((ecc1 & 0x7ff) << 11);
+
+ /* second 3 bytes in ecc_code for second 256
+ * bytes of 512 page size
+ */
+ p = (u8 *) (code + 1);
+ memcpy((ecc_code + 3), p, 3);
dev_dbg(info->device, "returning ecc 0x%08x\n", code[1]);
}
- p = (u8 *)code;
- for (i = 0; i < bytes; i++)
- ecc_code[i] = p[i];
-
return 0;
}
/*
* System initialization functions
*/
-
static int bf5xx_nand_dma_init(struct bf5xx_nand_info *info)
{
int ret;
init_completion(&info->dma_completion);
+#ifdef CONFIG_BF54x
/* Setup DMAC1 channel mux for NFC which shared with SDH */
val = bfin_read_DMAC1_PERIMUX();
val &= 0xFFFE;
bfin_write_DMAC1_PERIMUX(val);
SSYNC();
-
+#endif
/* Request NFC DMA channel */
ret = request_dma(CH_NFC, "BF5XX NFC driver");
if (ret < 0) {
return 0;
}
+static void bf5xx_nand_dma_remove(struct bf5xx_nand_info *info)
+{
+ /* Free NFC DMA channel */
+ if (hardware_ecc)
+ free_dma(CH_NFC);
+}
+
/*
* BF5XX NFC hardware initialization
* - pin mux setup
bfin_write_NFC_IRQSTAT(val);
SSYNC();
- if (peripheral_request_list(bfin_nfc_pin_req, DRV_NAME)) {
- printk(KERN_ERR DRV_NAME
- ": Requesting Peripherals failed\n");
- return -EFAULT;
- }
-
/* DMA initialization */
if (bf5xx_nand_dma_init(info))
err = -ENXIO;
#endif
}
-static int bf5xx_nand_remove(struct platform_device *pdev)
+static int __devexit bf5xx_nand_remove(struct platform_device *pdev)
{
struct bf5xx_nand_info *info = to_nand_info(pdev);
struct mtd_info *mtd = NULL;
}
peripheral_free_list(bfin_nfc_pin_req);
+ bf5xx_nand_dma_remove(info);
/* free the common resources */
kfree(info);
* it can allocate all necessary resources then calls the
* nand layer to look for devices
*/
-static int bf5xx_nand_probe(struct platform_device *pdev)
+static int __devinit bf5xx_nand_probe(struct platform_device *pdev)
{
struct bf5xx_nand_platform *plat = to_nand_plat(pdev);
struct bf5xx_nand_info *info = NULL;
if (!plat) {
dev_err(&pdev->dev, "no platform specific information\n");
- goto exit_error;
+ return -EINVAL;
+ }
+
+ if (peripheral_request_list(bfin_nfc_pin_req, DRV_NAME)) {
+ dev_err(&pdev->dev, "requesting Peripherals failed\n");
+ return -EFAULT;
}
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (info == NULL) {
dev_err(&pdev->dev, "no memory for flash info\n");
err = -ENOMEM;
- goto exit_error;
+ goto out_err_kzalloc;
}
platform_set_drvdata(pdev, info);
/* initialise the hardware */
err = bf5xx_nand_hw_init(info);
- if (err != 0)
- goto exit_error;
+ if (err)
+ goto out_err_hw_init;
/* setup hardware ECC data struct */
if (hardware_ecc) {
+#ifdef CONFIG_MTD_NAND_BF5XX_BOOTROM_ECC
+ chip->badblock_pattern = &bootrom_bbt;
+ chip->ecc.layout = &bootrom_ecclayout;
+#endif
+
if (plat->page_size == NFC_PG_SIZE_256) {
chip->ecc.bytes = 3;
chip->ecc.size = 256;
/* scan hardware nand chip and setup mtd info data struct */
if (nand_scan(mtd, 1)) {
err = -ENXIO;
- goto exit_error;
+ goto out_err_nand_scan;
}
/* add NAND partition */
dev_dbg(&pdev->dev, "initialised ok\n");
return 0;
-exit_error:
- bf5xx_nand_remove(pdev);
+out_err_nand_scan:
+ bf5xx_nand_dma_remove(info);
+out_err_hw_init:
+ platform_set_drvdata(pdev, NULL);
+ kfree(info);
+out_err_kzalloc:
+ peripheral_free_list(bfin_nfc_pin_req);
- if (err == 0)
- err = -EINVAL;
return err;
}
{
struct bf5xx_nand_info *info = platform_get_drvdata(dev);
- if (info)
- bf5xx_nand_hw_init(info);
-
return 0;
}
/* driver device registration */
static struct platform_driver bf5xx_nand_driver = {
.probe = bf5xx_nand_probe,
- .remove = bf5xx_nand_remove,
+ .remove = __devexit_p(bf5xx_nand_remove),
.suspend = bf5xx_nand_suspend,
.resume = bf5xx_nand_resume,
.driver = {
MODULE_LICENSE("GPL");
MODULE_AUTHOR(DRV_AUTHOR);
MODULE_DESCRIPTION(DRV_DESC);
+MODULE_ALIAS("platform:" DRV_NAME);
git.openpandora.org / pandora-kernel.git / blobdiff