Some places in the code are missing newlines or have unnecessary
whitespaces and newlines. This creates inconsistency of the code and
hurts readability. This patch removes the unnecessary and adds necessary
whitespaces / newlines, clears indentation of the code.
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
drivers/i2c/busses/i2c-tegra.c | 52 ++++++++++++++++++++--------------
1 file changed, 30 insertions(+), 22 deletions(-)
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 2dd97540f14f..c36f2bed0240 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -310,6 +310,7 @@ static unsigned long tegra_i2c_reg_addr(struct tegra_i2c_dev *i2c_dev,
reg += (reg >= I2C_TX_FIFO) ? 0x10 : 0x40;
else if (i2c_dev->is_vi)
reg = 0xc00 + (reg << 2);
+
return reg;
}
@@ -370,9 +371,12 @@ static int tegra_i2c_dma_submit(struct tegra_i2c_dev *i2c_dev, size_t len)
struct dma_chan *chan;
dev_dbg(i2c_dev->dev, "starting DMA for length: %zu\n", len);
+
reinit_completion(&i2c_dev->dma_complete);
+
dir = i2c_dev->msg_read ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV;
chan = i2c_dev->msg_read ? i2c_dev->rx_dma_chan : i2c_dev->tx_dma_chan;
+
dma_desc = dmaengine_prep_slave_single(chan, i2c_dev->dma_phys,
len, dir, DMA_PREP_INTERRUPT |
DMA_CTRL_ACK);
@@ -386,6 +390,7 @@ static int tegra_i2c_dma_submit(struct tegra_i2c_dev *i2c_dev, size_t len)
dma_desc->callback_param = i2c_dev;
dmaengine_submit(dma_desc);
dma_async_issue_pending(chan);
+
return 0;
}
@@ -573,6 +578,7 @@ static int tegra_i2c_flush_fifos(struct tegra_i2c_dev *i2c_dev)
dev_err(i2c_dev->dev, "failed to flush FIFO\n");
return err;
}
+
return 0;
}
@@ -784,9 +790,9 @@ static int tegra_i2c_fill_tx_fifo(struct tegra_i2c_dev *i2c_dev)
*/
buf_remaining -= words_to_transfer * BYTES_PER_FIFO_WORD;
tx_fifo_avail -= words_to_transfer;
+
i2c_dev->msg_buf_remaining = buf_remaining;
- i2c_dev->msg_buf = buf +
- words_to_transfer * BYTES_PER_FIFO_WORD;
+ i2c_dev->msg_buf = buf + words_to_transfer * BYTES_PER_FIFO_WORD;
i2c_writesl(i2c_dev, buf, I2C_TX_FIFO, words_to_transfer);
@@ -1186,9 +1192,11 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
xfer_size = msg->len + I2C_PACKET_HEADER_SIZE;
xfer_size = ALIGN(xfer_size, BYTES_PER_FIFO_WORD);
+
i2c_dev->is_curr_dma_xfer = (xfer_size > I2C_PIO_MODE_PREFERRED_LEN) &&
i2c_dev->dma_buf &&
!i2c_dev->is_curr_atomic_xfer;
+
tegra_i2c_config_fifo_trig(i2c_dev, xfer_size);
/*
@@ -1196,25 +1204,24 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
* Total bits = 9 bits per byte (including ACK bit) + Start & stop bits
*/
xfer_time += DIV_ROUND_CLOSEST(((xfer_size * 9) + 2) * MSEC_PER_SEC,
- i2c_dev->bus_clk_rate);
+ i2c_dev->bus_clk_rate);
int_mask = I2C_INT_NO_ACK | I2C_INT_ARBITRATION_LOST;
tegra_i2c_unmask_irq(i2c_dev, int_mask);
+
if (i2c_dev->is_curr_dma_xfer) {
if (i2c_dev->msg_read) {
dma_sync_single_for_device(i2c_dev->dev,
i2c_dev->dma_phys,
- xfer_size,
- DMA_FROM_DEVICE);
+ xfer_size, DMA_FROM_DEVICE);
+
err = tegra_i2c_dma_submit(i2c_dev, xfer_size);
if (err)
return err;
-
} else {
dma_sync_single_for_cpu(i2c_dev->dev,
i2c_dev->dma_phys,
- xfer_size,
- DMA_TO_DEVICE);
+ xfer_size, DMA_TO_DEVICE);
}
}
@@ -1223,10 +1230,11 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
if (!i2c_dev->msg_read) {
if (i2c_dev->is_curr_dma_xfer) {
memcpy(i2c_dev->dma_buf, msg->buf, msg->len);
+
dma_sync_single_for_device(i2c_dev->dev,
i2c_dev->dma_phys,
- xfer_size,
- DMA_TO_DEVICE);
+ xfer_size, DMA_TO_DEVICE);
+
err = tegra_i2c_dma_submit(i2c_dev, xfer_size);
if (err)
return err;
@@ -1237,6 +1245,7 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
if (i2c_dev->hw->has_per_pkt_xfer_complete_irq)
int_mask |= I2C_INT_PACKET_XFER_COMPLETE;
+
if (!i2c_dev->is_curr_dma_xfer) {
if (msg->flags & I2C_M_RD)
int_mask |= I2C_INT_RX_FIFO_DATA_REQ;
@@ -1275,10 +1284,9 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
if (i2c_dev->msg_read && i2c_dev->msg_err == I2C_ERR_NONE) {
dma_sync_single_for_cpu(i2c_dev->dev,
i2c_dev->dma_phys,
- xfer_size,
- DMA_FROM_DEVICE);
- memcpy(i2c_dev->msg_buf, i2c_dev->dma_buf,
- msg->len);
+ xfer_size, DMA_FROM_DEVICE);
+
+ memcpy(i2c_dev->msg_buf, i2c_dev->dma_buf, msg->len);
}
}
@@ -1363,6 +1371,7 @@ static u32 tegra_i2c_func(struct i2c_adapter *adap)
if (i2c_dev->hw->has_continue_xfer_support)
ret |= I2C_FUNC_NOSTART;
+
return ret;
}
@@ -1774,11 +1783,11 @@ static int tegra_i2c_remove(struct platform_device *pdev)
struct tegra_i2c_dev *i2c_dev = platform_get_drvdata(pdev);
i2c_del_adapter(&i2c_dev->adapter);
-
- pm_runtime_disable(&pdev->dev);
+ pm_runtime_disable(i2c_dev->dev);
tegra_i2c_release_dma(i2c_dev);
tegra_i2c_release_clocks(i2c_dev);
+
return 0;
}
@@ -1877,15 +1886,14 @@ static const struct dev_pm_ops tegra_i2c_pm = {
};
static struct platform_driver tegra_i2c_driver = {
- .probe = tegra_i2c_probe,
- .remove = tegra_i2c_remove,
- .driver = {
- .name = "tegra-i2c",
+ .probe = tegra_i2c_probe,
+ .remove = tegra_i2c_remove,
+ .driver = {
+ .name = "tegra-i2c",
.of_match_table = tegra_i2c_of_match,
- .pm = &tegra_i2c_pm,
+ .pm = &tegra_i2c_pm,
},
};
-
module_platform_driver(tegra_i2c_driver);
MODULE_DESCRIPTION("nVidia Tegra2 I2C Bus Controller driver");
--
2.27.0
