[PATCH 08/10] mtd: mxc_nand: put several more fields into devtype_data
Uwe Kleine-König
u.kleine-koenig at pengutronix.de
Mon Apr 23 05:23:40 EDT 2012
Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
drivers/mtd/nand/mxc_nand.c | 128 +++++++++++++++++++++++++++++++------------
1 file changed, 93 insertions(+), 35 deletions(-)
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index ac4b2e9..81ffb9b 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -156,6 +156,22 @@ struct mxc_nand_devtype_data {
void (*select_chip)(struct mtd_info *mtd, int chip);
int (*correct_data)(struct mtd_info *mtd, u_char *dat,
u_char *read_ecc, u_char *calc_ecc);
+
+ /*
+ * On i.MX21 the CONFIG2:INT bit cannot be read if interrupts are masked
+ * (CONFIG1:INT_MSK is set). To handle this the driver uses
+ * enable_irq/disable_irq_nosync instead of CONFIG1:INT_MSK
+ */
+ int irqpending_quirk;
+ int needs_ip;
+
+ size_t regs_offset;
+ size_t spare0_offset;
+ size_t axi_offset;
+
+ int spare_len;
+ int eccbytes;
+ int eccsize;
};
struct mxc_nand_host {
@@ -181,16 +197,8 @@ struct mxc_nand_host {
uint8_t *data_buf;
unsigned int buf_start;
- int spare_len;
const struct mxc_nand_devtype_data *devtype_data;
-
- /*
- * On i.MX21 the CONFIG2:INT bit cannot be read if interrupts are masked
- * (CONFIG1:INT_MSK is set). To handle this the driver uses
- * enable_irq/disable_irq_nosync instead of CONFIG1:INT_MSK
- */
- int irqpending_quirk;
};
/* OOB placement block for use with hardware ecc generation */
@@ -284,7 +292,7 @@ static int check_int_v1_v2(struct mxc_nand_host *host)
if (!(tmp & NFC_V1_V2_CONFIG2_INT))
return 0;
- if (!host->irqpending_quirk)
+ if (!host->devtype_data->irqpending_quirk)
writew(tmp & ~NFC_V1_V2_CONFIG2_INT, NFC_V1_V2_CONFIG2);
return 1;
@@ -320,7 +328,7 @@ static void irq_control_v3(struct mxc_nand_host *host, int activate)
static void irq_control(struct mxc_nand_host *host, int activate)
{
- if (host->irqpending_quirk) {
+ if (host->devtype_data->irqpending_quirk) {
if (activate)
enable_irq(host->irq);
else
@@ -406,7 +414,7 @@ static void send_cmd_v1_v2(struct mxc_nand_host *host, uint16_t cmd, int useirq)
writew(cmd, NFC_V1_V2_FLASH_CMD);
writew(NFC_CMD, NFC_V1_V2_CONFIG2);
- if (host->irqpending_quirk && (cmd == NAND_CMD_RESET)) {
+ if (host->devtype_data->irqpending_quirk && (cmd == NAND_CMD_RESET)) {
int max_retries = 100;
/* Reset completion is indicated by NFC_CONFIG2 */
/* being set to 0 */
@@ -781,7 +789,7 @@ static void copy_spare(struct mtd_info *mtd, bool bfrom)
u16 n = mtd->writesize >> 9;
u8 *d = host->data_buf + mtd->writesize;
u8 *s = host->spare0;
- u16 t = host->spare_len;
+ u16 t = host->devtype_data->spare_len;
j = (mtd->oobsize / n >> 1) << 1;
@@ -881,7 +889,7 @@ static void preset_v1(struct mtd_info *mtd)
if (nand_chip->ecc.mode == NAND_ECC_HW)
config1 |= NFC_V1_V2_CONFIG1_ECC_EN;
- if (!host->irqpending_quirk)
+ if (!host->devtype_data->irqpending_quirk)
config1 |= NFC_V1_V2_CONFIG1_INT_MSK;
host->eccsize = 1;
@@ -911,7 +919,7 @@ static void preset_v2(struct mtd_info *mtd)
config1 |= NFC_V2_CONFIG1_FP_INT;
- if (!host->irqpending_quirk)
+ if (!host->devtype_data->irqpending_quirk)
config1 |= NFC_V1_V2_CONFIG1_INT_MSK;
if (mtd->writesize) {
@@ -1126,7 +1134,7 @@ static struct nand_bbt_descr bbt_mirror_descr = {
.pattern = mirror_pattern,
};
-/* v1: 21, 27, 31 */
+/* v1 + irqpending_quirk: 21 */
static const struct mxc_nand_devtype_data imx21_nand_devtype_data = {
.preset = preset_v1,
.send_cmd = send_cmd_v1_v2,
@@ -1142,6 +1150,39 @@ static const struct mxc_nand_devtype_data imx21_nand_devtype_data = {
.ecclayout_4k = &nandv1_hw_eccoob_smallpage, /* XXX: needs fix */
.select_chip = mxc_nand_select_chip_v1_v3,
.correct_data = mxc_nand_correct_data_v1,
+ .irqpending_quirk = 1,
+ .needs_ip = 0,
+ .regs_offset = 0xe00,
+ .spare0_offset = 0x800,
+ .spare_len = 16,
+ .eccbytes = 3,
+ .eccsize = 1,
+};
+
+/* v1 + !irqpending_quirk: 27, 31 */
+static const struct mxc_nand_devtype_data imx27_nand_devtype_data = {
+ .preset = preset_v1,
+ .send_cmd = send_cmd_v1_v2,
+ .send_addr = send_addr_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,
+ .ecclayout_512 = &nandv1_hw_eccoob_smallpage,
+ .ecclayout_2k = &nandv1_hw_eccoob_largepage,
+ .ecclayout_4k = &nandv1_hw_eccoob_smallpage, /* XXX: needs fix */
+ .select_chip = mxc_nand_select_chip_v1_v3,
+ .correct_data = mxc_nand_correct_data_v1,
+ .irqpending_quirk = 0,
+ .needs_ip = 0,
+ .regs_offset = 0xe00,
+ .spare0_offset = 0x800,
+ .axi_offset = 0,
+ .spare_len = 16,
+ .eccbytes = 3,
+ .eccsize = 1,
};
/* v21: 25, 35 */
@@ -1160,6 +1201,14 @@ static const struct mxc_nand_devtype_data imx25_nand_devtype_data = {
.ecclayout_4k = &nandv2_hw_eccoob_4k,
.select_chip = mxc_nand_select_chip_v2,
.correct_data = mxc_nand_correct_data_v2_v3,
+ .irqpending_quirk = 0,
+ .needs_ip = 0,
+ .regs_offset = 0x1e00,
+ .spare0_offset = 0x1000,
+ .axi_offset = 0,
+ .spare_len = 64,
+ .eccbytes = 9,
+ .eccsize = 0,
};
/* v3: 51, 53 */
@@ -1178,6 +1227,14 @@ static const struct mxc_nand_devtype_data imx51_nand_devtype_data = {
.ecclayout_4k = &nandv2_hw_eccoob_smallpage, /* XXX: needs fix */
.select_chip = mxc_nand_select_chip_v1_v3,
.correct_data = mxc_nand_correct_data_v2_v3,
+ .irqpending_quirk = 0,
+ .needs_ip = 1,
+ .regs_offset = 0,
+ .spare0_offset = 0x1000,
+ .axi_offset = 0x1e00,
+ .spare_len = 64,
+ .eccbytes = 0,
+ .eccsize = 0,
};
static int __init mxcnd_probe(struct platform_device *pdev)
@@ -1242,22 +1299,31 @@ static int __init mxcnd_probe(struct platform_device *pdev)
host->main_area0 = host->base;
if (nfc_is_v1()) {
- host->devtype_data = &imx21_nand_devtype_data;
if (cpu_is_mx21())
- host->irqpending_quirk = 1;
- host->regs = host->base + 0xe00;
- host->spare0 = host->base + 0x800;
- host->spare_len = 16;
- this->ecc.bytes = 3;
- host->eccsize = 1;
+ host->devtype_data = &imx21_nand_devtype_data;
+ else
+ host->devtype_data = &imx27_nand_devtype_data;
} else if (nfc_is_v21()) {
host->devtype_data = &imx25_nand_devtype_data;
- host->regs = host->base + 0x1e00;
- host->spare0 = host->base + 0x1000;
- host->spare_len = 64;
- this->ecc.bytes = 9;
} else if (nfc_is_v3_2()) {
host->devtype_data = &imx51_nand_devtype_data;
+ } else
+ BUG();
+
+ if (host->devtype_data->regs_offset)
+ host->regs = host->base + host->devtype_data->regs_offset;
+ host->spare0 = host->base + host->devtype_data->spare0_offset;
+ if (host->devtype_data->axi_offset)
+ host->regs_axi = host->base + host->devtype_data->axi_offset;
+
+ this->ecc.bytes = host->devtype_data->eccbytes;
+ host->eccsize = host->devtype_data->eccsize;
+
+ this->select_chip = host->devtype_data->select_chip;
+ this->ecc.size = 512;
+ this->ecc.layout = host->devtype_data->ecclayout_512;
+
+ if (host->devtype_data->needs_ip) {
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res) {
err = -ENODEV;
@@ -1268,15 +1334,7 @@ static int __init mxcnd_probe(struct platform_device *pdev)
err = -ENOMEM;
goto eirq;
}
- host->regs_axi = host->base + 0x1e00;
- host->spare0 = host->base + 0x1000;
- host->spare_len = 64;
- } else
- BUG();
-
- this->select_chip = host->devtype_data->select_chip;
- this->ecc.size = 512;
- this->ecc.layout = host->devtype_data->ecclayout_512;
+ }
if (pdata->hw_ecc) {
this->ecc.calculate = mxc_nand_calculate_ecc;
--
1.7.10
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