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i2c: at91: Add missing probe function to device driver

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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>
This commit is contained in:
Wenyou.Yang@microchip.com 2017-07-31 09:56:27 +08:00 • committed by Heiko Schocher
parent 1989374b21
commit 0bc8f640a4
1 changed files with 24 additions and 2 deletions
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26
drivers/i2c/at91_i2c.c
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@ -199,7 +199,7 @@ static int at91_i2c_enable_clk(struct udevice *dev)
return 0; 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_bus *bus = dev_get_priv(dev);
struct at91_i2c_regs *reg = bus->regs; 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 = { static const struct dm_i2c_ops at91_i2c_ops = {
.xfer = at91_i2c_xfer, .xfer = at91_i2c_xfer,
.probe_chip = at91_i2c_probe, .probe_chip = at91_i2c_probe_chip,
.set_bus_speed = at91_i2c_set_bus_speed, .set_bus_speed = at91_i2c_set_bus_speed,
.get_bus_speed = at91_i2c_get_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, &reg->cr);
at91_calc_i2c_clock(dev, bus->clock_frequency);
writel(bus->cwgr_val, &reg->cwgr);
writel(TWI_CR_MSEN, &reg->cr);
writel(TWI_CR_SVDIS, &reg->cr);
return 0;
}
static const struct at91_i2c_pdata at91rm9200_config = { static const struct at91_i2c_pdata at91rm9200_config = {
.clk_max_div = 5, .clk_max_div = 5,
.clk_offset = 3, .clk_offset = 3,
@ -315,6 +336,7 @@ U_BOOT_DRIVER(i2c_at91) = {
.name = "i2c_at91", .name = "i2c_at91",
.id = UCLASS_I2C, .id = UCLASS_I2C,
.of_match = at91_i2c_ids, .of_match = at91_i2c_ids,
.probe = at91_i2c_probe,
.ofdata_to_platdata = at91_i2c_ofdata_to_platdata, .ofdata_to_platdata = at91_i2c_ofdata_to_platdata,
.per_child_auto_alloc_size = sizeof(struct dm_i2c_chip), .per_child_auto_alloc_size = sizeof(struct dm_i2c_chip),
.priv_auto_alloc_size = sizeof(struct at91_i2c_bus), .priv_auto_alloc_size = sizeof(struct at91_i2c_bus),