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[v6,34/35] i2c: tegra: Clean up whitespaces, newlines and indentation

Message ID 20200908021021.9123-35-digetx@gmail.com
State Accepted
Commit c886a4a03a0155d5630a613b1f1c3f4fdde80b0a
Headers show
Series Improvements for Tegra I2C driver | expand

Commit Message

Dmitry Osipenko Sept. 8, 2020, 2:10 a.m. UTC
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.

Reviewed-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/i2c/busses/i2c-tegra.c | 72 +++++++++++++++++++++-------------
 1 file changed, 44 insertions(+), 28 deletions(-)
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 8b2be44cec2f..179d4bb66ae8 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -314,6 +314,7 @@  static u32 tegra_i2c_reg_addr(struct tegra_i2c_dev *i2c_dev, u32 reg)
 		reg += (reg >= I2C_TX_FIFO) ? 0x10 : 0x40;
 	else if (i2c_dev->is_vi)
 		reg = 0xc00 + (reg << 2);
+
 	return reg;
 }
 
@@ -373,9 +374,12 @@  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);
@@ -387,8 +391,10 @@  static int tegra_i2c_dma_submit(struct tegra_i2c_dev *i2c_dev, size_t len)
 
 	dma_desc->callback = tegra_i2c_dma_complete;
 	dma_desc->callback_param = i2c_dev;
+
 	dmaengine_submit(dma_desc);
 	dma_async_issue_pending(chan);
+
 	return 0;
 }
 
@@ -557,6 +563,7 @@  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;
 }
 
@@ -650,8 +657,7 @@  static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
 	if (i2c_dev->hw->has_interface_timing_reg && tsu_thd)
 		i2c_writel(i2c_dev, tsu_thd, I2C_INTERFACE_TIMING_1);
 
-	clk_multiplier  = tlow + thigh + 2;
-	clk_multiplier *= non_hs_mode + 1;
+	clk_multiplier = (tlow + thigh + 2) * (non_hs_mode + 1);
 
 	err = clk_set_rate(i2c_dev->div_clk,
 			   i2c_dev->bus_clk_rate * clk_multiplier);
@@ -799,9 +805,9 @@  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);
 
@@ -914,12 +920,18 @@  static irqreturn_t tegra_i2c_isr(int irq, void *dev_id)
 	goto done;
 err:
 	/* mask all interrupts on error */
-	tegra_i2c_mask_irq(i2c_dev, I2C_INT_NO_ACK | I2C_INT_ARBITRATION_LOST |
-		I2C_INT_PACKET_XFER_COMPLETE | I2C_INT_TX_FIFO_DATA_REQ |
-		I2C_INT_RX_FIFO_DATA_REQ);
+	tegra_i2c_mask_irq(i2c_dev,
+			   I2C_INT_NO_ACK |
+			   I2C_INT_ARBITRATION_LOST |
+			   I2C_INT_PACKET_XFER_COMPLETE |
+			   I2C_INT_TX_FIFO_DATA_REQ |
+			   I2C_INT_RX_FIFO_DATA_REQ);
+
 	if (i2c_dev->hw->supports_bus_clear)
 		tegra_i2c_mask_irq(i2c_dev, I2C_INT_BUS_CLR_DONE);
+
 	i2c_writel(i2c_dev, status, I2C_INT_STATUS);
+
 	if (i2c_dev->is_dvc)
 		dvc_writel(i2c_dev, DVC_STATUS_I2C_DONE_INTR, DVC_STATUS);
 
@@ -960,6 +972,7 @@  static int tegra_i2c_config_fifo_trig(struct tegra_i2c_dev *i2c_dev, size_t len)
 		if (i2c_dev->msg_read) {
 			chan = i2c_dev->rx_dma_chan;
 			reg_offset = tegra_i2c_reg_addr(i2c_dev, I2C_RX_FIFO);
+
 			slv_config.src_addr = i2c_dev->base_phys + reg_offset;
 			slv_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 			slv_config.src_maxburst = dma_burst;
@@ -971,6 +984,7 @@  static int tegra_i2c_config_fifo_trig(struct tegra_i2c_dev *i2c_dev, size_t len)
 		} else {
 			chan = i2c_dev->tx_dma_chan;
 			reg_offset = tegra_i2c_reg_addr(i2c_dev, I2C_TX_FIFO);
+
 			slv_config.dst_addr = i2c_dev->base_phys + reg_offset;
 			slv_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 			slv_config.dst_maxburst = dma_burst;
@@ -1067,6 +1081,7 @@  static int tegra_i2c_issue_bus_clear(struct i2c_adapter *adap)
 	int err;
 
 	reinit_completion(&i2c_dev->msg_complete);
+
 	val = FIELD_PREP(I2C_BC_SCLK_THRESHOLD, 9) | I2C_BC_STOP_COND |
 	      I2C_BC_TERMINATE;
 	i2c_writel(i2c_dev, val, I2C_BUS_CLEAR_CNFG);
@@ -1199,7 +1214,8 @@  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->dma_mode = (xfer_size > I2C_PIO_MODE_PREFERRED_LEN) &&
+
+	i2c_dev->dma_mode = xfer_size > I2C_PIO_MODE_PREFERRED_LEN &&
 			    i2c_dev->dma_buf && !i2c_dev->atomic_mode;
 
 	err = tegra_i2c_config_fifo_trig(i2c_dev, xfer_size);
@@ -1211,25 +1227,24 @@  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->dma_mode) {
 		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);
 		}
 	}
 
@@ -1238,10 +1253,11 @@  static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
 	if (!i2c_dev->msg_read) {
 		if (i2c_dev->dma_mode) {
 			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;
@@ -1252,6 +1268,7 @@  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->dma_mode) {
 		if (msg->flags & I2C_M_RD)
 			int_mask |= I2C_INT_RX_FIFO_DATA_REQ;
@@ -1290,10 +1307,9 @@  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);
 		}
 	}
 
@@ -1380,6 +1396,7 @@  static u32 tegra_i2c_func(struct i2c_adapter *adap)
 
 	if (i2c_dev->hw->has_continue_xfer_support)
 		ret |= I2C_FUNC_NOSTART;
+
 	return ret;
 }
 
@@ -1784,11 +1801,11 @@  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;
 }
 
@@ -1886,15 +1903,14 @@  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");