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| author |   Stefan Roese <sr@denx.de> | 2012-04-18 15:01:41 +0200 |
|---|---|---|
| committer |   Wolfram Sang <w.sang@pengutronix.de> | 2012-05-12 14:28:11 +0200 |
| commit | a8a9f3fef1aa5226818af91b7a241de6d74d369c (patch) | |
| tree | 8002e2cc53f5e195b0237e9ee54cccd6d31d72ec /drivers/i2c/busses/i2c-designware-core.h | |
| parent | i2c: Dynamically assign adapter id if it wasn't explictly specified (diff) | |
| download | linux-dev-a8a9f3fef1aa5226818af91b7a241de6d74d369c.tar.xz linux-dev-a8a9f3fef1aa5226818af91b7a241de6d74d369c.zip | |
i2c: designware: Add support for 16bit register access
The STM SPEAr platform can only access the i2c controller register
via 16bit read/write functions. This patch adds support to
automatically detect this 16bit access mode.
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-designware-core.h')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-core.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h index 02d1a2ddd853..9c1840ee09c7 100644 --- a/drivers/i2c/busses/i2c-designware-core.h +++ b/drivers/i2c/busses/i2c-designware-core.h @@ -82,7 +82,7 @@ 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; @@ -90,6 +90,9 @@ struct dw_i2c_dev { unsigned int rx_fifo_depth; }; +#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); |