diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-designware-core.h')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-core.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h index 02d1a2ddd85..d66b6cbc9ed 100644 --- a/drivers/i2c/busses/i2c-designware-core.h +++ b/drivers/i2c/busses/i2c-designware-core.h @@ -60,6 +60,15 @@ * @adapter: i2c subsystem adapter node * @tx_fifo_depth: depth of the hardware tx fifo * @rx_fifo_depth: depth of the hardware rx fifo + * @rx_outstanding: current master-rx elements in tx fifo + * @ss_hcnt: standard speed HCNT value + * @ss_lcnt: standard speed LCNT value + * @fs_hcnt: fast speed HCNT value + * @fs_lcnt: fast speed LCNT value + * + * HCNT and LCNT parameters can be used if the platform knows more accurate + * values than the one computed based only on the input clock frequency. + * Leave them to be %0 if not used. */ struct dw_i2c_dev { struct device *dev; @@ -82,14 +91,25 @@ struct dw_i2c_dev { unsigned int status; u32 abort_source; int irq; - int swab; + u32 accessor_flags; struct i2c_adapter adapter; u32 functionality; u32 master_cfg; unsigned int tx_fifo_depth; unsigned int rx_fifo_depth; + int rx_outstanding; + u32 sda_hold_time; + u32 sda_falling_time; + u32 scl_falling_time; + u16 ss_hcnt; + u16 ss_lcnt; + u16 fs_hcnt; + u16 fs_lcnt; }; +#define ACCESS_SWAP 0x00000001 +#define ACCESS_16BIT 0x00000002 + extern u32 dw_readl(struct dw_i2c_dev *dev, int offset); extern void dw_writel(struct dw_i2c_dev *dev, u32 b, int offset); extern int i2c_dw_init(struct dw_i2c_dev *dev); |