diff options
| author | Wenyou.Yang@microchip.com <Wenyou.Yang@microchip.com> | 2017-07-31 09:56:27 +0800 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2017-08-09 06:13:53 +0200 |
| commit | 0bc8f640a4d7ed72503f54cc398e382c9702415c (patch) | |
| tree | 9a1575667d5773fc3aedcb1d03d30eb1fd69f52f /drivers/i2c | |
| parent | 1989374b21089c63019fc9648408c8d609023ffe (diff) | |
i2c: at91: Add missing probe function to device driver
Add missing probe function to the device driver to active a device.
Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/at91_i2c.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/i2c/at91_i2c.c b/drivers/i2c/at91_i2c.c index b7298cf7748..d394044f80d 100644 --- a/drivers/i2c/at91_i2c.c +++ b/drivers/i2c/at91_i2c.c @@ -199,7 +199,7 @@ static int at91_i2c_enable_clk(struct udevice *dev) return 0; } -static int at91_i2c_probe(struct udevice *dev, uint chip, uint chip_flags) +static int at91_i2c_probe_chip(struct udevice *dev, uint chip, uint chip_flags) { struct at91_i2c_bus *bus = dev_get_priv(dev); struct at91_i2c_regs *reg = bus->regs; @@ -254,11 +254,32 @@ static int at91_i2c_ofdata_to_platdata(struct udevice *dev) static const struct dm_i2c_ops at91_i2c_ops = { .xfer = at91_i2c_xfer, - .probe_chip = at91_i2c_probe, + .probe_chip = at91_i2c_probe_chip, .set_bus_speed = at91_i2c_set_bus_speed, .get_bus_speed = at91_i2c_get_bus_speed, }; +static int at91_i2c_probe(struct udevice *dev) +{ + struct at91_i2c_bus *bus = dev_get_priv(dev); + struct at91_i2c_regs *reg = bus->regs; + int ret; + + ret = at91_i2c_enable_clk(dev); + if (ret) + return ret; + + writel(TWI_CR_SWRST, ®->cr); + + at91_calc_i2c_clock(dev, bus->clock_frequency); + + writel(bus->cwgr_val, ®->cwgr); + writel(TWI_CR_MSEN, ®->cr); + writel(TWI_CR_SVDIS, ®->cr); + + return 0; +} + static const struct at91_i2c_pdata at91rm9200_config = { .clk_max_div = 5, .clk_offset = 3, @@ -315,6 +336,7 @@ U_BOOT_DRIVER(i2c_at91) = { .name = "i2c_at91", .id = UCLASS_I2C, .of_match = at91_i2c_ids, + .probe = at91_i2c_probe, .ofdata_to_platdata = at91_i2c_ofdata_to_platdata, .per_child_auto_alloc_size = sizeof(struct dm_i2c_chip), .priv_auto_alloc_size = sizeof(struct at91_i2c_bus), |