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| author | Eugen Hristev <eugen.hristev@microchip.com> | 2019-09-11 08:24:28 +0000 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2019-10-24 20:25:01 +0200 |
| commit | 2989b45923b96981a3f50be7f64afdf9221c3b17 (patch) | |
| tree | 44d2ea0aadb801bb5991ef0777b3af5a89460182 /drivers/i2c/busses/i2c-at91.h | |
| parent | b00277923743e56c3652ea95b88943d21cad9d73 (diff) | |
| download | linux-stable-2989b45923b96981a3f50be7f64afdf9221c3b17.tar.gz linux-stable-2989b45923b96981a3f50be7f64afdf9221c3b17.tar.bz2 linux-stable-2989b45923b96981a3f50be7f64afdf9221c3b17.zip | |
i2c: at91: add support for digital filtering
Add new platform data support for digital filtering for i2c.
The sama5d4, sama5d2 and sam9x60 support this feature.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Reviewed-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-at91.h')
| -rw-r--r-- | drivers/i2c/busses/i2c-at91.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-at91.h b/drivers/i2c/busses/i2c-at91.h index 499b506f6128..c75447ec3acd 100644 --- a/drivers/i2c/busses/i2c-at91.h +++ b/drivers/i2c/busses/i2c-at91.h @@ -84,6 +84,9 @@ #define AT91_TWI_ACR_DATAL(len) ((len) & 0xff) #define AT91_TWI_ACR_DIR BIT(8) +#define AT91_TWI_FILTR 0x0044 +#define AT91_TWI_FILTR_FILT BIT(0) + #define AT91_TWI_FMR 0x0050 /* FIFO Mode Register */ #define AT91_TWI_FMR_TXRDYM(mode) (((mode) & 0x3) << 0) #define AT91_TWI_FMR_TXRDYM_MASK (0x3 << 0) @@ -108,6 +111,7 @@ struct at91_twi_pdata { bool has_unre_flag; bool has_alt_cmd; bool has_hold_field; + bool has_dig_filtr; struct at_dma_slave dma_slave; }; @@ -145,6 +149,7 @@ struct at91_twi_dev { unsigned smr; struct i2c_client *slave; #endif + bool enable_dig_filt; }; unsigned at91_twi_read(struct at91_twi_dev *dev, unsigned reg); |