diff options
Diffstat (limited to 'drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h')
| -rw-r--r-- | drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h | 82 |
1 files changed, 46 insertions, 36 deletions
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h index 06c1f993912c..23f9030cf6d2 100644 --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h @@ -135,11 +135,47 @@ struct gpmi_devdata { const int clks_count; }; +/** + * struct gpmi_nfc_hardware_timing - GPMI hardware timing parameters. + * @timing_mode: The timing mode to comply with. + * @must_apply_timings: Whether controller timings have already been + * applied or not (useful only while there is + * support for only one chip select) + * @clk_rate: The clock rate that must be used to derive the + * following parameters. + * @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 { + unsigned int timing_mode; + bool must_apply_timings; + unsigned long int clk_rate; + + /* for HW_GPMI_TIMING0 */ + u8 data_setup_in_cycles; + u8 data_hold_in_cycles; + u8 address_setup_in_cycles; + + /* for HW_GPMI_TIMING1 */ + u16 device_busy_timeout; +#define GPMI_DEFAULT_BUSY_TIMEOUT 0x500 /* default busy timeout value.*/ + + /* for HW_GPMI_CTRL1 */ + bool use_half_periods; + u8 sample_delay_factor; + u8 wrn_dly_sel; +}; + struct gpmi_nand_data { - /* flags */ -#define GPMI_ASYNC_EDO_ENABLED (1 << 0) -#define GPMI_TIMING_INIT_OK (1 << 1) - int flags; + /* Devdata */ const struct gpmi_devdata *devdata; /* System Interface */ @@ -152,6 +188,7 @@ struct gpmi_nand_data { /* Flash Hardware */ struct nand_timing timing; int timing_mode; + struct gpmi_nfc_hardware_timing hw; /* BCH */ struct bch_geometry bch_geometry; @@ -205,35 +242,6 @@ struct gpmi_nand_data { }; /** - * struct gpmi_nfc_hardware_timing - GPMI hardware timing parameters. - * @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; -}; - -/** * struct timing_threshold - Timing threshold * @max_data_setup_cycles: The maximum number of data setup cycles that * can be expressed in the hardware. @@ -279,14 +287,16 @@ int start_dma_with_bch_irq(struct gpmi_nand_data *, /* GPMI-NAND helper function library */ int gpmi_init(struct gpmi_nand_data *); -int gpmi_extra_init(struct gpmi_nand_data *); void gpmi_clear_bch(struct gpmi_nand_data *); void gpmi_dump_info(struct gpmi_nand_data *); int bch_set_geometry(struct gpmi_nand_data *); int gpmi_is_ready(struct gpmi_nand_data *, unsigned chip); int gpmi_send_command(struct gpmi_nand_data *); -void gpmi_begin(struct gpmi_nand_data *); -void gpmi_end(struct gpmi_nand_data *); +int gpmi_enable_clk(struct gpmi_nand_data *this); +int gpmi_disable_clk(struct gpmi_nand_data *this); +int gpmi_setup_data_interface(struct mtd_info *mtd, int chipnr, + const struct nand_data_interface *conf); +void gpmi_nfc_apply_timings(struct gpmi_nand_data *this); int gpmi_read_data(struct gpmi_nand_data *); int gpmi_send_data(struct gpmi_nand_data *); int gpmi_send_page(struct gpmi_nand_data *, |