diff options
Diffstat (limited to 'drivers/mtd/nand/gpmi-nand/gpmi-nand.h')
| -rw-r--r-- | drivers/mtd/nand/gpmi-nand/gpmi-nand.h | 60 |
1 files changed, 45 insertions, 15 deletions
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.h b/drivers/mtd/nand/gpmi-nand/gpmi-nand.h index ce5daa16092..32c6ba49f98 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.h +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.h @@ -20,16 +20,15 @@ #include <linux/mtd/nand.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <linux/fsl/mxs-dma.h> +#include <linux/dmaengine.h> +#define GPMI_CLK_MAX 5 /* MX6Q needs five clocks */ struct resources { - void *gpmi_regs; - void *bch_regs; - unsigned int bch_low_interrupt; - unsigned int bch_high_interrupt; + void __iomem *gpmi_regs; + void __iomem *bch_regs; unsigned int dma_low_channel; unsigned int dma_high_channel; - struct clk *clock; + struct clk *clock[GPMI_CLK_MAX]; }; /** @@ -120,17 +119,36 @@ 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; struct platform_device *pdev; - struct gpmi_nand_platform_data *pdata; /* Resources */ struct resources resources; /* Flash Hardware */ struct nand_timing timing; + int timing_mode; /* BCH */ struct bch_geometry bch_geometry; @@ -174,7 +192,6 @@ struct gpmi_nand_data { /* DMA channels */ #define DMA_CHANS 8 struct dma_chan *dma_chans[DMA_CHANS]; - struct mxs_dma_data dma_data; enum dma_ops_type last_dma_type; enum dma_ops_type dma_type; struct completion dma_done; @@ -188,16 +205,28 @@ struct gpmi_nand_data { * @data_setup_in_cycles: The data setup time, in cycles. * @data_hold_in_cycles: The data hold time, in cycles. * @address_setup_in_cycles: The address setup time, in cycles. + * @device_busy_timeout: The timeout waiting for NAND Ready/Busy, + * this value is the number of cycles multiplied + * by 4096. * @use_half_periods: Indicates the clock is running slowly, so the * NFC DLL should use half-periods. * @sample_delay_factor: The sample delay factor. + * @wrn_dly_sel: The delay on the GPMI write strobe. */ struct gpmi_nfc_hardware_timing { + /* for HW_GPMI_TIMING0 */ uint8_t data_setup_in_cycles; uint8_t data_hold_in_cycles; uint8_t address_setup_in_cycles; + + /* for HW_GPMI_TIMING1 */ + uint16_t device_busy_timeout; +#define GPMI_DEFAULT_BUSY_TIMEOUT 0x500 /* default busy timeout value.*/ + + /* for HW_GPMI_CTRL1 */ bool use_half_periods; uint8_t sample_delay_factor; + uint8_t wrn_dly_sel; }; /** @@ -246,6 +275,7 @@ extern int start_dma_with_bch_irq(struct gpmi_nand_data *, /* GPMI-NAND helper function library */ extern int gpmi_init(struct gpmi_nand_data *); +extern int gpmi_extra_init(struct gpmi_nand_data *); extern void gpmi_clear_bch(struct gpmi_nand_data *); extern void gpmi_dump_info(struct gpmi_nand_data *); extern int bch_set_geometry(struct gpmi_nand_data *); @@ -265,11 +295,11 @@ extern int gpmi_read_page(struct gpmi_nand_data *, #define STATUS_ERASED 0xff #define STATUS_UNCORRECTABLE 0xfe -/* 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 |