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Commit 6d38af25 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by David Woodhouse
Browse files

mtd: mxc_nand: split some functions to get rid of more nfc_is_vX() 



Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent e4303b25

drivers/mtd/nand/mxc_nand.c

+80 −29
Original line number Diff line number Diff line
@@ -151,6 +151,7 @@ struct mxc_nand_devtype_data { 
	uint16_t (*get_dev_status)(struct mxc_nand_host *);

	int (*check_int)(struct mxc_nand_host *);

	void (*irq_control)(struct mxc_nand_host *, int);

	u32 (*get_ecc_status)(struct mxc_nand_host *);

};



struct mxc_nand_host {
@@ -325,6 +326,21 @@ static void irq_control(struct mxc_nand_host *host, int activate) 
	}

}



static u32 get_ecc_status_v1(struct mxc_nand_host *host)

{

	return readw(NFC_V1_V2_ECC_STATUS_RESULT);

}



static u32 get_ecc_status_v2(struct mxc_nand_host *host)

{

	return readl(NFC_V1_V2_ECC_STATUS_RESULT);

}



static u32 get_ecc_status_v3(struct mxc_nand_host *host)

{

	return readl(NFC_V3_ECC_STATUS_RESULT);

}



static irqreturn_t mxc_nfc_irq(int irq, void *dev_id)

{

	struct mxc_nand_host *host = dev_id;
@@ -444,13 +460,27 @@ static void send_page_v3(struct mtd_info *mtd, unsigned int ops) 
	wait_op_done(host, false);

}



static void send_page_v1_v2(struct mtd_info *mtd, unsigned int ops)

static void send_page_v2(struct mtd_info *mtd, unsigned int ops)

{

	struct nand_chip *nand_chip = mtd->priv;

	struct mxc_nand_host *host = nand_chip->priv;



	/* NANDFC buffer 0 is used for page read/write */

	writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR);



	writew(ops, NFC_V1_V2_CONFIG2);



	/* Wait for operation to complete */

	wait_op_done(host, true);

}



static void send_page_v1(struct mtd_info *mtd, unsigned int ops)

{

	struct nand_chip *nand_chip = mtd->priv;

	struct mxc_nand_host *host = nand_chip->priv;

	int bufs, i;



	if (nfc_is_v1() && mtd->writesize > 512)

	if (mtd->writesize > 512)

		bufs = 4;

	else

		bufs = 1;
@@ -566,7 +596,7 @@ static int mxc_nand_correct_data_v1(struct mtd_info *mtd, u_char *dat, 
	 * additional correction.  2-Bit errors cannot be corrected by

	 * HW ECC, so we need to return failure

	 */

	uint16_t ecc_status = readw(NFC_V1_V2_ECC_STATUS_RESULT);

	uint16_t ecc_status = get_ecc_status_v1(host);



	if (((ecc_status & 0x3) == 2) || ((ecc_status >> 2) == 2)) {

		pr_debug("MXC_NAND: HWECC uncorrectable 2-bit ECC error\n");
@@ -591,10 +621,7 @@ static int mxc_nand_correct_data_v2_v3(struct mtd_info *mtd, u_char *dat, 


	no_subpages = mtd->writesize >> 9;



	if (nfc_is_v21())

		ecc_stat = readl(NFC_V1_V2_ECC_STATUS_RESULT);

	else

		ecc_stat = readl(NFC_V3_ECC_STATUS_RESULT);

	ecc_stat = host->devtype_data->get_ecc_status(host);



	do {

		err = ecc_stat & ecc_bit_mask;
@@ -821,7 +848,35 @@ static int get_eccsize(struct mtd_info *mtd) 
		return 8;

}



static void preset_v1_v2(struct mtd_info *mtd)

static void preset_v1(struct mtd_info *mtd)

{

	struct nand_chip *nand_chip = mtd->priv;

	struct mxc_nand_host *host = nand_chip->priv;

	uint16_t config1 = 0;



	if (nand_chip->ecc.mode == NAND_ECC_HW)

		config1 |= NFC_V1_V2_CONFIG1_ECC_EN;



	if (!host->irqpending_quirk)

		config1 |= NFC_V1_V2_CONFIG1_INT_MSK;



	host->eccsize = 1;



	writew(config1, NFC_V1_V2_CONFIG1);

	/* preset operation */



	/* Unlock the internal RAM Buffer */

	writew(0x2, NFC_V1_V2_CONFIG);



	/* Blocks to be unlocked */

	writew(0x0, NFC_V1_UNLOCKSTART_BLKADDR);

	writew(0xffff, NFC_V1_UNLOCKEND_BLKADDR);



	/* Unlock Block Command for given address range */

	writew(0x4, NFC_V1_V2_WRPROT);

}



static void preset_v2(struct mtd_info *mtd)

{

	struct nand_chip *nand_chip = mtd->priv;

	struct mxc_nand_host *host = nand_chip->priv;
@@ -830,13 +885,12 @@ static void preset_v1_v2(struct mtd_info *mtd) 
	if (nand_chip->ecc.mode == NAND_ECC_HW)

		config1 |= NFC_V1_V2_CONFIG1_ECC_EN;



	if (nfc_is_v21())

	config1 |= NFC_V2_CONFIG1_FP_INT;



	if (!host->irqpending_quirk)

		config1 |= NFC_V1_V2_CONFIG1_INT_MSK;



	if (nfc_is_v21() && mtd->writesize) {

	if (mtd->writesize) {

		uint16_t pages_per_block = mtd->erasesize / mtd->writesize;



		host->eccsize = get_eccsize(mtd);
@@ -855,7 +909,6 @@ static void preset_v1_v2(struct mtd_info *mtd) 
	writew(0x2, NFC_V1_V2_CONFIG);



	/* Blocks to be unlocked */

	if (nfc_is_v21()) {

	writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR0);

	writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR1);

	writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR2);
@@ -864,11 +917,6 @@ static void preset_v1_v2(struct mtd_info *mtd) 
	writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR1);

	writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR2);

	writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR3);

	} else if (nfc_is_v1()) {

		writew(0x0, NFC_V1_UNLOCKSTART_BLKADDR);

		writew(0xffff, NFC_V1_UNLOCKEND_BLKADDR);

	} else

		BUG();



	/* Unlock Block Command for given address range */

	writew(0x4, NFC_V1_V2_WRPROT);
@@ -1056,26 +1104,28 @@ static struct nand_bbt_descr bbt_mirror_descr = { 


/* v1: i.MX21, i.MX27, i.MX31 */

static const struct mxc_nand_devtype_data imx21_nand_devtype_data = {

	.preset = preset_v1_v2,

	.preset = preset_v1,

	.send_cmd = send_cmd_v1_v2,

	.send_addr = send_addr_v1_v2,

	.send_page = send_page_v1_v2,

	.send_page = send_page_v1,

	.send_read_id = send_read_id_v1_v2,

	.get_dev_status = get_dev_status_v1_v2,

	.check_int = check_int_v1_v2,

	.irq_control = irq_control_v1_v2,

	.get_ecc_status = get_ecc_status_v1,

};



/* v21: i.MX25, i.MX35 */

static const struct mxc_nand_devtype_data imx25_nand_devtype_data = {

	.preset = preset_v1_v2,

	.preset = preset_v2,

	.send_cmd = send_cmd_v1_v2,

	.send_addr = send_addr_v1_v2,

	.send_page = send_page_v1_v2,

	.send_page = send_page_v2,

	.send_read_id = send_read_id_v1_v2,

	.get_dev_status = get_dev_status_v1_v2,

	.check_int = check_int_v1_v2,

	.irq_control = irq_control_v1_v2,

	.get_ecc_status = get_ecc_status_v2,

};



/* v3: i.MX51, i.MX53 */
@@ -1088,6 +1138,7 @@ static const struct mxc_nand_devtype_data imx51_nand_devtype_data = { 
	.get_dev_status = get_dev_status_v3,

	.check_int = check_int_v3,

	.irq_control = irq_control_v3,

	.get_ecc_status = get_ecc_status_v3,

};



static int __init mxcnd_probe(struct platform_device *pdev)