net: mvneta: zero Tx descriptors on init

[u-boot] / drivers / i2c / at91_i2c.c

diff --git a/drivers/i2c/at91_i2c.c b/drivers/i2c/at91_i2c.c
index d394044f80de5362d8b8a77862800093f878602c..846b3d5320b7786e9d5770b1501425e9e95d3f47 100644 (file)
--- a/drivers/i2c/at91_i2c.c
+++ b/drivers/i2c/at91_i2c.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Atmel I2C driver.
  *
  * (C) Copyright 2016 Songjun Wu <songjun.wu@atmel.com>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <asm/io.h>
@@ -72,6 +71,8 @@ static int at91_i2c_xfer_msg(struct at91_i2c_bus *bus, struct i2c_msg *msg)
 
        } else {
                writel(msg->buf[0], &reg->thr);
+               ret = at91_wait_for_xfer(bus, TWI_SR_TXRDY);
+
                for (i = 1; !ret && (i < msg->len); i++) {
                        writel(msg->buf[i], &reg->thr);
                        ret = at91_wait_for_xfer(bus, TWI_SR_TXRDY);
@@ -199,27 +200,6 @@ static int at91_i2c_enable_clk(struct udevice *dev)
        return 0;
 }
 
-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;
-       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 int at91_i2c_set_bus_speed(struct udevice *dev, unsigned int speed)
 {
        struct at91_i2c_bus *bus = dev_get_priv(dev);
@@ -254,7 +234,6 @@ 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_chip,
        .set_bus_speed  = at91_i2c_set_bus_speed,
        .get_bus_speed  = at91_i2c_get_bus_speed,
 };