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| author | mario.six@gdsys.cc <mario.six@gdsys.cc> | 2016-07-21 11:57:07 +0200 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2016-07-26 10:19:49 +0200 |
| commit | 61bc02b2608722204c1f16a74cd8851db5ee311d (patch) | |
| tree | 1b8b942847e03b6e7d2dbe24292fcc123faafb54 /drivers/i2c/mvtwsi.c | |
| parent | e075828128d961d873484bb02ac8101bc733a1d7 (diff) | |
| download | u-boot-61bc02b2608722204c1f16a74cd8851db5ee311d.zip u-boot-61bc02b2608722204c1f16a74cd8851db5ee311d.tar.gz u-boot-61bc02b2608722204c1f16a74cd8851db5ee311d.tar.bz2 | |
i2c: mvtwsi: Add compatibility functions
To prepare for the DM conversion, we add a layer of compatibility
functions to be used by both the legacy and the DM functions.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'drivers/i2c/mvtwsi.c')
| -rw-r--r-- | drivers/i2c/mvtwsi.c | 47 |
1 files changed, 38 insertions, 9 deletions
diff --git a/drivers/i2c/mvtwsi.c b/drivers/i2c/mvtwsi.c index 9ddd3ee..f1bfd5d 100644 --- a/drivers/i2c/mvtwsi.c +++ b/drivers/i2c/mvtwsi.c @@ -341,8 +341,8 @@ static void twsi_reset(struct i2c_adapter *adap) /* * Sets baud to the highest possible value not exceeding the requested one. */ -static uint twsi_i2c_set_bus_speed(struct i2c_adapter *adap, - uint requested_speed) +static uint __twsi_i2c_set_bus_speed(struct i2c_adapter *adap, + uint requested_speed) { struct mvtwsi_registers *twsi = twsi_get_base(adap); uint tmp_speed, highest_speed, n, m; @@ -366,14 +366,14 @@ static uint twsi_i2c_set_bus_speed(struct i2c_adapter *adap, return 0; } -static void twsi_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd) +static void __twsi_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd) { struct mvtwsi_registers *twsi = twsi_get_base(adap); /* Reset controller */ twsi_reset(adap); /* Set speed */ - twsi_i2c_set_bus_speed(adap, speed); + __twsi_i2c_set_bus_speed(adap, speed); /* Set slave address; even though we don't use it */ writel(slaveadd, &twsi->slave_address); writel(0, &twsi->xtnd_slave_addr); @@ -408,7 +408,7 @@ static int i2c_begin(struct i2c_adapter *adap, int expected_start_status, /* * Begin read, nak data byte, end. */ -static int twsi_i2c_probe(struct i2c_adapter *adap, uchar chip) +static int __twsi_i2c_probe_chip(struct i2c_adapter *adap, uchar chip) { u8 dummy_byte; int status; @@ -432,8 +432,8 @@ static int twsi_i2c_probe(struct i2c_adapter *adap, uchar chip) * higher level APIs, we need to make a decision here, and for the moment that * will be a repeated start without a preceding stop. */ -static int twsi_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, - int alen, uchar *data, int length) +static int __twsi_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, + int alen, uchar *data, int length) { int status = 0; int stop_status; @@ -463,8 +463,8 @@ static int twsi_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, /* * Begin write, send address byte(s), send data bytes, end. */ -static int twsi_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, - int alen, uchar *data, int length) +static int __twsi_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, + int alen, uchar *data, int length) { int status, stop_status; @@ -484,6 +484,35 @@ static int twsi_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, return status != 0 ? status : stop_status; } +static void twsi_i2c_init(struct i2c_adapter *adap, int speed, + int slaveadd) +{ + __twsi_i2c_init(adap, speed, slaveadd); +} + +static uint twsi_i2c_set_bus_speed(struct i2c_adapter *adap, + uint requested_speed) +{ + return __twsi_i2c_set_bus_speed(adap, requested_speed); +} + +static int twsi_i2c_probe(struct i2c_adapter *adap, uchar chip) +{ + return __twsi_i2c_probe_chip(adap, chip); +} + +static int twsi_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, + int alen, uchar *data, int length) +{ + return __twsi_i2c_read(adap, chip, addr, alen, data, length); +} + +static int twsi_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, + int alen, uchar *data, int length) +{ + return __twsi_i2c_write(adap, chip, addr, alen, data, length); +} + #ifdef CONFIG_I2C_MVTWSI_BASE0 U_BOOT_I2C_ADAP_COMPLETE(twsi0, twsi_i2c_init, twsi_i2c_probe, twsi_i2c_read, twsi_i2c_write, |