diff options
Diffstat (limited to 'drivers/mtd/nand/gpmi-nand')
-rw-r--r-- | drivers/mtd/nand/gpmi-nand/bch-regs.h | 12 | ||||
-rw-r--r-- | drivers/mtd/nand/gpmi-nand/gpmi-lib.c | 11 | ||||
-rw-r--r-- | drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 72 | ||||
-rw-r--r-- | drivers/mtd/nand/gpmi-nand/gpmi-nand.h | 32 |
4 files changed, 73 insertions, 54 deletions
diff --git a/drivers/mtd/nand/gpmi-nand/bch-regs.h b/drivers/mtd/nand/gpmi-nand/bch-regs.h index 588f537..05bb91f 100644 --- a/drivers/mtd/nand/gpmi-nand/bch-regs.h +++ b/drivers/mtd/nand/gpmi-nand/bch-regs.h @@ -54,7 +54,7 @@ #define MX6Q_BP_BCH_FLASH0LAYOUT0_ECC0 11 #define MX6Q_BM_BCH_FLASH0LAYOUT0_ECC0 (0x1f << MX6Q_BP_BCH_FLASH0LAYOUT0_ECC0) #define BF_BCH_FLASH0LAYOUT0_ECC0(v, x) \ - (GPMI_IS_MX6Q(x) \ + (GPMI_IS_MX6(x) \ ? (((v) << MX6Q_BP_BCH_FLASH0LAYOUT0_ECC0) \ & MX6Q_BM_BCH_FLASH0LAYOUT0_ECC0) \ : (((v) << BP_BCH_FLASH0LAYOUT0_ECC0) \ @@ -65,7 +65,7 @@ #define MX6Q_BM_BCH_FLASH0LAYOUT0_GF_13_14 \ (0x1 << MX6Q_BP_BCH_FLASH0LAYOUT0_GF_13_14) #define BF_BCH_FLASH0LAYOUT0_GF(v, x) \ - ((GPMI_IS_MX6Q(x) && ((v) == 14)) \ + ((GPMI_IS_MX6(x) && ((v) == 14)) \ ? (((1) << MX6Q_BP_BCH_FLASH0LAYOUT0_GF_13_14) \ & MX6Q_BM_BCH_FLASH0LAYOUT0_GF_13_14) \ : 0 \ @@ -77,7 +77,7 @@ #define MX6Q_BM_BCH_FLASH0LAYOUT0_DATA0_SIZE \ (0x3ff << BP_BCH_FLASH0LAYOUT0_DATA0_SIZE) #define BF_BCH_FLASH0LAYOUT0_DATA0_SIZE(v, x) \ - (GPMI_IS_MX6Q(x) \ + (GPMI_IS_MX6(x) \ ? (((v) >> 2) & MX6Q_BM_BCH_FLASH0LAYOUT0_DATA0_SIZE) \ : ((v) & BM_BCH_FLASH0LAYOUT0_DATA0_SIZE) \ ) @@ -96,7 +96,7 @@ #define MX6Q_BP_BCH_FLASH0LAYOUT1_ECCN 11 #define MX6Q_BM_BCH_FLASH0LAYOUT1_ECCN (0x1f << MX6Q_BP_BCH_FLASH0LAYOUT1_ECCN) #define BF_BCH_FLASH0LAYOUT1_ECCN(v, x) \ - (GPMI_IS_MX6Q(x) \ + (GPMI_IS_MX6(x) \ ? (((v) << MX6Q_BP_BCH_FLASH0LAYOUT1_ECCN) \ & MX6Q_BM_BCH_FLASH0LAYOUT1_ECCN) \ : (((v) << BP_BCH_FLASH0LAYOUT1_ECCN) \ @@ -107,7 +107,7 @@ #define MX6Q_BM_BCH_FLASH0LAYOUT1_GF_13_14 \ (0x1 << MX6Q_BP_BCH_FLASH0LAYOUT1_GF_13_14) #define BF_BCH_FLASH0LAYOUT1_GF(v, x) \ - ((GPMI_IS_MX6Q(x) && ((v) == 14)) \ + ((GPMI_IS_MX6(x) && ((v) == 14)) \ ? (((1) << MX6Q_BP_BCH_FLASH0LAYOUT1_GF_13_14) \ & MX6Q_BM_BCH_FLASH0LAYOUT1_GF_13_14) \ : 0 \ @@ -119,7 +119,7 @@ #define MX6Q_BM_BCH_FLASH0LAYOUT1_DATAN_SIZE \ (0x3ff << BP_BCH_FLASH0LAYOUT1_DATAN_SIZE) #define BF_BCH_FLASH0LAYOUT1_DATAN_SIZE(v, x) \ - (GPMI_IS_MX6Q(x) \ + (GPMI_IS_MX6(x) \ ? (((v) >> 2) & MX6Q_BM_BCH_FLASH0LAYOUT1_DATAN_SIZE) \ : ((v) & BM_BCH_FLASH0LAYOUT1_DATAN_SIZE) \ ) diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c index dd1df60..87e658c 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c @@ -861,7 +861,7 @@ static void gpmi_compute_edo_timing(struct gpmi_nand_data *this, struct resources *r = &this->resources; unsigned long rate = clk_get_rate(r->clock[0]); int mode = this->timing_mode; - int dll_threshold = 16; /* in ns */ + int dll_threshold = this->devdata->max_chain_delay; unsigned long delay; unsigned long clk_period; int t_rea; @@ -886,9 +886,6 @@ static void gpmi_compute_edo_timing(struct gpmi_nand_data *this, /* [3] for GPMI_HW_GPMI_CTRL1 */ hw->wrn_dly_sel = BV_GPMI_CTRL1_WRN_DLY_SEL_NO_DELAY; - if (GPMI_IS_MX6Q(this)) - dll_threshold = 12; - /* * Enlarge 10 times for the numerator and denominator in {3}. * This make us to get more accurate result. @@ -974,7 +971,7 @@ int gpmi_extra_init(struct gpmi_nand_data *this) struct nand_chip *chip = &this->nand; /* Enable the asynchronous EDO feature. */ - if (GPMI_IS_MX6Q(this) && chip->onfi_version) { + if (GPMI_IS_MX6(this) && chip->onfi_version) { int mode = onfi_get_async_timing_mode(chip); /* We only support the timing mode 4 and mode 5. */ @@ -1096,12 +1093,12 @@ int gpmi_is_ready(struct gpmi_nand_data *this, unsigned chip) if (GPMI_IS_MX23(this)) { mask = MX23_BM_GPMI_DEBUG_READY0 << chip; reg = readl(r->gpmi_regs + HW_GPMI_DEBUG); - } else if (GPMI_IS_MX28(this) || GPMI_IS_MX6Q(this)) { + } else if (GPMI_IS_MX28(this) || GPMI_IS_MX6(this)) { /* * In the imx6, all the ready/busy pins are bound * together. So we only need to check chip 0. */ - if (GPMI_IS_MX6Q(this)) + if (GPMI_IS_MX6(this)) chip = 0; /* MX28 shares the same R/B register as MX6Q. */ diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c index bb77f75..f638cd8 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -53,6 +53,30 @@ static struct nand_ecclayout gpmi_hw_ecclayout = { .oobfree = { {.offset = 0, .length = 0} } }; +static const struct gpmi_devdata gpmi_devdata_imx23 = { + .type = IS_MX23, + .bch_max_ecc_strength = 20, + .max_chain_delay = 16, +}; + +static const struct gpmi_devdata gpmi_devdata_imx28 = { + .type = IS_MX28, + .bch_max_ecc_strength = 20, + .max_chain_delay = 16, +}; + +static const struct gpmi_devdata gpmi_devdata_imx6q = { + .type = IS_MX6Q, + .bch_max_ecc_strength = 40, + .max_chain_delay = 12, +}; + +static const struct gpmi_devdata gpmi_devdata_imx6sx = { + .type = IS_MX6SX, + .bch_max_ecc_strength = 62, + .max_chain_delay = 12, +}; + static irqreturn_t bch_irq(int irq, void *cookie) { struct gpmi_nand_data *this = cookie; @@ -102,14 +126,8 @@ static inline bool gpmi_check_ecc(struct gpmi_nand_data *this) /* The mx23/mx28 only support the GF13. */ if (geo->gf_len == 14) return false; - - if (geo->ecc_strength > MXS_ECC_STRENGTH_MAX) - return false; - } else if (GPMI_IS_MX6Q(this)) { - if (geo->ecc_strength > MX6_ECC_STRENGTH_MAX) - return false; } - return true; + return geo->ecc_strength <= this->devdata->bch_max_ecc_strength; } /* @@ -270,8 +288,7 @@ static int legacy_set_geometry(struct gpmi_nand_data *this) "We can not support this nand chip." " Its required ecc strength(%d) is beyond our" " capability(%d).\n", geo->ecc_strength, - (GPMI_IS_MX6Q(this) ? MX6_ECC_STRENGTH_MAX - : MXS_ECC_STRENGTH_MAX)); + this->devdata->bch_max_ecc_strength); return -EINVAL; } @@ -572,7 +589,7 @@ static int gpmi_get_clks(struct gpmi_nand_data *this) } /* Get extra clocks */ - if (GPMI_IS_MX6Q(this)) + if (GPMI_IS_MX6(this)) extra_clks = extra_clks_for_mx6q; if (!extra_clks) return 0; @@ -590,9 +607,9 @@ static int gpmi_get_clks(struct gpmi_nand_data *this) r->clock[i] = clk; } - if (GPMI_IS_MX6Q(this)) + if (GPMI_IS_MX6(this)) /* - * Set the default value for the gpmi clock in mx6q: + * Set the default value for the gpmi clock. * * If you want to use the ONFI nand which is in the * Synchronous Mode, you should change the clock as you need. @@ -1655,7 +1672,7 @@ static int gpmi_init_last(struct gpmi_nand_data *this) * (1) the chip is imx6, and * (2) the size of the ECC parity is byte aligned. */ - if (GPMI_IS_MX6Q(this) && + if (GPMI_IS_MX6(this) && ((bch_geo->gf_len * bch_geo->ecc_strength) % 8) == 0) { ecc->read_subpage = gpmi_ecc_read_subpage; chip->options |= NAND_SUBPAGE_READ; @@ -1711,7 +1728,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this) if (ret) goto err_out; - ret = nand_scan_ident(mtd, GPMI_IS_MX6Q(this) ? 2 : 1, NULL); + ret = nand_scan_ident(mtd, GPMI_IS_MX6(this) ? 2 : 1, NULL); if (ret) goto err_out; @@ -1740,23 +1757,19 @@ err_out: return ret; } -static const struct platform_device_id gpmi_ids[] = { - { .name = "imx23-gpmi-nand", .driver_data = IS_MX23, }, - { .name = "imx28-gpmi-nand", .driver_data = IS_MX28, }, - { .name = "imx6q-gpmi-nand", .driver_data = IS_MX6Q, }, - {} -}; - static const struct of_device_id gpmi_nand_id_table[] = { { .compatible = "fsl,imx23-gpmi-nand", - .data = (void *)&gpmi_ids[IS_MX23], + .data = (void *)&gpmi_devdata_imx23, }, { .compatible = "fsl,imx28-gpmi-nand", - .data = (void *)&gpmi_ids[IS_MX28], + .data = (void *)&gpmi_devdata_imx28, }, { .compatible = "fsl,imx6q-gpmi-nand", - .data = (void *)&gpmi_ids[IS_MX6Q], + .data = (void *)&gpmi_devdata_imx6q, + }, { + .compatible = "fsl,imx6sx-gpmi-nand", + .data = (void *)&gpmi_devdata_imx6sx, }, {} }; MODULE_DEVICE_TABLE(of, gpmi_nand_id_table); @@ -1767,18 +1780,18 @@ static int gpmi_nand_probe(struct platform_device *pdev) const struct of_device_id *of_id; int ret; + this = devm_kzalloc(&pdev->dev, sizeof(*this), GFP_KERNEL); + if (!this) + return -ENOMEM; + of_id = of_match_device(gpmi_nand_id_table, &pdev->dev); if (of_id) { - pdev->id_entry = of_id->data; + this->devdata = of_id->data; } else { dev_err(&pdev->dev, "Failed to find the right device id.\n"); return -ENODEV; } - this = devm_kzalloc(&pdev->dev, sizeof(*this), GFP_KERNEL); - if (!this) - return -ENOMEM; - platform_set_drvdata(pdev, this); this->pdev = pdev; this->dev = &pdev->dev; @@ -1823,7 +1836,6 @@ static struct platform_driver gpmi_nand_driver = { }, .probe = gpmi_nand_probe, .remove = gpmi_nand_remove, - .id_table = gpmi_ids, }; module_platform_driver(gpmi_nand_driver); diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.h b/drivers/mtd/nand/gpmi-nand/gpmi-nand.h index 4c801fa..32c6ba4 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.h +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.h @@ -119,11 +119,25 @@ struct nand_timing { int8_t tRHOH_in_ns; }; +enum gpmi_type { + IS_MX23, + IS_MX28, + IS_MX6Q, + IS_MX6SX +}; + +struct gpmi_devdata { + enum gpmi_type type; + int bch_max_ecc_strength; + int max_chain_delay; /* See the async EDO mode */ +}; + struct gpmi_nand_data { /* flags */ #define GPMI_ASYNC_EDO_ENABLED (1 << 0) #define GPMI_TIMING_INIT_OK (1 << 1) int flags; + const struct gpmi_devdata *devdata; /* System Interface */ struct device *dev; @@ -281,15 +295,11 @@ extern int gpmi_read_page(struct gpmi_nand_data *, #define STATUS_ERASED 0xff #define STATUS_UNCORRECTABLE 0xfe -/* BCH's bit correction capability. */ -#define MXS_ECC_STRENGTH_MAX 20 /* mx23 and mx28 */ -#define MX6_ECC_STRENGTH_MAX 40 - -/* Use the platform_id to distinguish different Archs. */ -#define IS_MX23 0x0 -#define IS_MX28 0x1 -#define IS_MX6Q 0x2 -#define GPMI_IS_MX23(x) ((x)->pdev->id_entry->driver_data == IS_MX23) -#define GPMI_IS_MX28(x) ((x)->pdev->id_entry->driver_data == IS_MX28) -#define GPMI_IS_MX6Q(x) ((x)->pdev->id_entry->driver_data == IS_MX6Q) +/* Use the devdata to distinguish different Archs. */ +#define GPMI_IS_MX23(x) ((x)->devdata->type == IS_MX23) +#define GPMI_IS_MX28(x) ((x)->devdata->type == IS_MX28) +#define GPMI_IS_MX6Q(x) ((x)->devdata->type == IS_MX6Q) +#define GPMI_IS_MX6SX(x) ((x)->devdata->type == IS_MX6SX) + +#define GPMI_IS_MX6(x) (GPMI_IS_MX6Q(x) || GPMI_IS_MX6SX(x)) #endif |