1 files changed, 229 insertions, 127 deletions

diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 528ae46c087f..b8b79bb7fec3 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -2,6 +2,8 @@
 // Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
 // Copyright (C) 2008 Juergen Beisert
 
+#include <linux/bits.h>
+#include <linux/bitfield.h>
 #include <linux/clk.h>
 #include <linux/completion.h>
 #include <linux/delay.h>
@@ -12,7 +14,10 @@
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
+#include <linux/math.h>
+#include <linux/math64.h>
 #include <linux/module.h>
+#include <linux/overflow.h>
 #include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
@@ -20,7 +25,6 @@
 #include <linux/spi/spi.h>
 #include <linux/types.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/property.h>
 
 #include <linux/dma/imx-dma.h>
@@ -38,6 +42,7 @@ MODULE_PARM_DESC(polling_limit_us,
 		 "time in us to run a transfer in polling mode\n");
 
 #define MXC_RPM_TIMEOUT		2000 /* 2000ms */
+#define MXC_SPI_DEFAULT_SPEED	500000 /* 500KHz */
 
 #define MXC_CSPIRXDATA		0x00
 #define MXC_CSPITXDATA		0x04
@@ -53,7 +58,7 @@ MODULE_PARM_DESC(polling_limit_us,
 /* The maximum bytes that a sdma BD can transfer. */
 #define MAX_SDMA_BD_BYTES (1 << 15)
 #define MX51_ECSPI_CTRL_MAX_BURST	512
-/* The maximum bytes that IMX53_ECSPI can transfer in slave mode.*/
+/* The maximum bytes that IMX53_ECSPI can transfer in target mode.*/
 #define MX53_MAX_TRANSFER_BYTES		512
 
 enum spi_imx_devtype {
@@ -71,14 +76,15 @@ struct spi_imx_data;
 struct spi_imx_devtype_data {
 	void (*intctrl)(struct spi_imx_data *spi_imx, int enable);
 	int (*prepare_message)(struct spi_imx_data *spi_imx, struct spi_message *msg);
-	int (*prepare_transfer)(struct spi_imx_data *spi_imx, struct spi_device *spi);
+	int (*prepare_transfer)(struct spi_imx_data *spi_imx, struct spi_device *spi,
+				struct spi_transfer *t);
 	void (*trigger)(struct spi_imx_data *spi_imx);
 	int (*rx_available)(struct spi_imx_data *spi_imx);
 	void (*reset)(struct spi_imx_data *spi_imx);
 	void (*setup_wml)(struct spi_imx_data *spi_imx);
 	void (*disable)(struct spi_imx_data *spi_imx);
 	bool has_dmamode;
-	bool has_slavemode;
+	bool has_targetmode;
 	unsigned int fifo_size;
 	bool dynamic_burst;
 	/*
@@ -114,10 +120,10 @@ struct spi_imx_data {
 	unsigned int dynamic_burst;
 	bool rx_only;
 
-	/* Slave mode */
-	bool slave_mode;
-	bool slave_aborted;
-	unsigned int slave_burst;
+	/* Target mode */
+	bool target_mode;
+	bool target_aborted;
+	unsigned int target_burst;
 
 	/* DMA */
 	bool usedma;
@@ -241,7 +247,7 @@ static bool spi_imx_can_dma(struct spi_controller *controller, struct spi_device
 	if (!controller->dma_rx)
 		return false;
 
-	if (spi_imx->slave_mode)
+	if (spi_imx->target_mode)
 		return false;
 
 	if (transfer->len < spi_imx->devtype_data->fifo_size)
@@ -301,6 +307,18 @@ static bool spi_imx_can_dma(struct spi_controller *controller, struct spi_device
 #define MX51_ECSPI_STAT		0x18
 #define MX51_ECSPI_STAT_RR		(1 <<  3)
 
+#define MX51_ECSPI_PERIOD	0x1c
+#define MX51_ECSPI_PERIOD_MASK		0x7fff
+/*
+ * As measured on the i.MX6, the SPI host controller inserts a 4 SPI-Clock
+ * (SCLK) delay after each burst if the PERIOD reg is 0x0. This value will be
+ * called MX51_ECSPI_PERIOD_MIN_DELAY_SCK.
+ *
+ * If the PERIOD register is != 0, the controller inserts a delay of
+ * MX51_ECSPI_PERIOD_MIN_DELAY_SCK + register value + 1 SCLK after each burst.
+ */
+#define MX51_ECSPI_PERIOD_MIN_DELAY_SCK 4
+
 #define MX51_ECSPI_TESTREG	0x20
 #define MX51_ECSPI_TESTREG_LBC	BIT(31)
 
@@ -405,12 +423,19 @@ static void spi_imx_buf_tx_swap(struct spi_imx_data *spi_imx)
 	writel(val, spi_imx->base + MXC_CSPITXDATA);
 }
 
-static void mx53_ecspi_rx_slave(struct spi_imx_data *spi_imx)
+static void mx53_ecspi_rx_target(struct spi_imx_data *spi_imx)
 {
-	u32 val = be32_to_cpu(readl(spi_imx->base + MXC_CSPIRXDATA));
+	u32 val = readl(spi_imx->base + MXC_CSPIRXDATA);
+#ifdef __LITTLE_ENDIAN
+	unsigned int bytes_per_word = spi_imx_bytes_per_word(spi_imx->bits_per_word);
 
+	if (bytes_per_word == 1)
+		swab32s(&val);
+	else if (bytes_per_word == 2)
+		swahw32s(&val);
+#endif
 	if (spi_imx->rx_buf) {
-		int n_bytes = spi_imx->slave_burst % sizeof(val);
+		int n_bytes = spi_imx->target_burst % sizeof(val);
 
 		if (!n_bytes)
 			n_bytes = sizeof(val);
@@ -419,16 +444,19 @@ static void mx53_ecspi_rx_slave(struct spi_imx_data *spi_imx)
 		       ((u8 *)&val) + sizeof(val) - n_bytes, n_bytes);
 
 		spi_imx->rx_buf += n_bytes;
-		spi_imx->slave_burst -= n_bytes;
+		spi_imx->target_burst -= n_bytes;
 	}
 
 	spi_imx->remainder -= sizeof(u32);
 }
 
-static void mx53_ecspi_tx_slave(struct spi_imx_data *spi_imx)
+static void mx53_ecspi_tx_target(struct spi_imx_data *spi_imx)
 {
 	u32 val = 0;
 	int n_bytes = spi_imx->count % sizeof(val);
+#ifdef __LITTLE_ENDIAN
+	unsigned int bytes_per_word;
+#endif
 
 	if (!n_bytes)
 		n_bytes = sizeof(val);
@@ -436,12 +464,18 @@ static void mx53_ecspi_tx_slave(struct spi_imx_data *spi_imx)
 	if (spi_imx->tx_buf) {
 		memcpy(((u8 *)&val) + sizeof(val) - n_bytes,
 		       spi_imx->tx_buf, n_bytes);
-		val = cpu_to_be32(val);
 		spi_imx->tx_buf += n_bytes;
 	}
 
 	spi_imx->count -= n_bytes;
 
+#ifdef __LITTLE_ENDIAN
+	bytes_per_word = spi_imx_bytes_per_word(spi_imx->bits_per_word);
+	if (bytes_per_word == 1)
+		swab32s(&val);
+	else if (bytes_per_word == 2)
+		swahw32s(&val);
+#endif
 	writel(val, spi_imx->base + MXC_CSPITXDATA);
 }
 
@@ -503,9 +537,15 @@ static void mx51_ecspi_trigger(struct spi_imx_data *spi_imx)
 {
 	u32 reg;
 
-	reg = readl(spi_imx->base + MX51_ECSPI_CTRL);
-	reg |= MX51_ECSPI_CTRL_XCH;
-	writel(reg, spi_imx->base + MX51_ECSPI_CTRL);
+	if (spi_imx->usedma) {
+		reg = readl(spi_imx->base + MX51_ECSPI_DMA);
+		reg |= MX51_ECSPI_DMA_TEDEN | MX51_ECSPI_DMA_RXDEN;
+		writel(reg, spi_imx->base + MX51_ECSPI_DMA);
+	} else {
+		reg = readl(spi_imx->base + MX51_ECSPI_CTRL);
+		reg |= MX51_ECSPI_CTRL_XCH;
+		writel(reg, spi_imx->base + MX51_ECSPI_CTRL);
+	}
 }
 
 static void mx51_ecspi_disable(struct spi_imx_data *spi_imx)
@@ -536,8 +576,8 @@ static int mx51_ecspi_prepare_message(struct spi_imx_data *spi_imx,
 	u32 current_cfg = cfg;
 	int channel = mx51_ecspi_channel(spi);
 
-	/* set Master or Slave mode */
-	if (spi_imx->slave_mode)
+	/* set Host or Target mode */
+	if (spi_imx->target_mode)
 		ctrl &= ~MX51_ECSPI_CTRL_MODE_MASK;
 	else
 		ctrl |= MX51_ECSPI_CTRL_MODE_MASK;
@@ -565,11 +605,11 @@ static int mx51_ecspi_prepare_message(struct spi_imx_data *spi_imx,
 	writel(testreg, spi_imx->base + MX51_ECSPI_TESTREG);
 
 	/*
-	 * eCSPI burst completion by Chip Select signal in Slave mode
+	 * eCSPI burst completion by Chip Select signal in Target mode
 	 * is not functional for imx53 Soc, config SPI burst completed when
 	 * BURST_LENGTH + 1 bits are received
 	 */
-	if (spi_imx->slave_mode && is_imx53_ecspi(spi_imx))
+	if (spi_imx->target_mode)
 		cfg &= ~MX51_ECSPI_CONFIG_SBBCTRL(channel);
 	else
 		cfg |= MX51_ECSPI_CONFIG_SBBCTRL(channel);
@@ -649,25 +689,30 @@ static void mx51_configure_cpha(struct spi_imx_data *spi_imx,
 }
 
 static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx,
-				       struct spi_device *spi)
+				       struct spi_device *spi, struct spi_transfer *t)
 {
 	u32 ctrl = readl(spi_imx->base + MX51_ECSPI_CTRL);
+	u64 word_delay_sck;
 	u32 clk;
 
 	/* Clear BL field and set the right value */
 	ctrl &= ~MX51_ECSPI_CTRL_BL_MASK;
-	if (spi_imx->slave_mode && is_imx53_ecspi(spi_imx))
-		ctrl |= (spi_imx->slave_burst * 8 - 1)
+	if (spi_imx->target_mode)
+		ctrl |= (spi_imx->target_burst * 8 - 1)
 			<< MX51_ECSPI_CTRL_BL_OFFSET;
-	else
+	else {
 		ctrl |= (spi_imx->bits_per_word - 1)
 			<< MX51_ECSPI_CTRL_BL_OFFSET;
+	}
 
 	/* set clock speed */
 	ctrl &= ~(0xf << MX51_ECSPI_CTRL_POSTDIV_OFFSET |
 		  0xf << MX51_ECSPI_CTRL_PREDIV_OFFSET);
-	ctrl |= mx51_ecspi_clkdiv(spi_imx, spi_imx->spi_bus_clk, &clk);
-	spi_imx->spi_bus_clk = clk;
+
+	if (!spi_imx->target_mode) {
+		ctrl |= mx51_ecspi_clkdiv(spi_imx, spi_imx->spi_bus_clk, &clk);
+		spi_imx->spi_bus_clk = clk;
+	}
 
 	mx51_configure_cpha(spi_imx, spi);
 
@@ -682,6 +727,49 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx,
 
 	writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL);
 
+	/* calculate word delay in SPI Clock (SCLK) cycles */
+	if (t->word_delay.value == 0) {
+		word_delay_sck = 0;
+	} else if (t->word_delay.unit == SPI_DELAY_UNIT_SCK) {
+		word_delay_sck = t->word_delay.value;
+
+		if (word_delay_sck <= MX51_ECSPI_PERIOD_MIN_DELAY_SCK)
+			word_delay_sck = 0;
+		else if (word_delay_sck <= MX51_ECSPI_PERIOD_MIN_DELAY_SCK + 1)
+			word_delay_sck = 1;
+		else
+			word_delay_sck -= MX51_ECSPI_PERIOD_MIN_DELAY_SCK + 1;
+	} else {
+		int word_delay_ns;
+
+		word_delay_ns = spi_delay_to_ns(&t->word_delay, t);
+		if (word_delay_ns < 0)
+			return word_delay_ns;
+
+		if (word_delay_ns <= mul_u64_u32_div(NSEC_PER_SEC,
+						     MX51_ECSPI_PERIOD_MIN_DELAY_SCK,
+						     spi_imx->spi_bus_clk)) {
+			word_delay_sck = 0;
+		} else if (word_delay_ns <= mul_u64_u32_div(NSEC_PER_SEC,
+							    MX51_ECSPI_PERIOD_MIN_DELAY_SCK + 1,
+							    spi_imx->spi_bus_clk)) {
+			word_delay_sck = 1;
+		} else {
+			word_delay_ns -= mul_u64_u32_div(NSEC_PER_SEC,
+							 MX51_ECSPI_PERIOD_MIN_DELAY_SCK + 1,
+							 spi_imx->spi_bus_clk);
+
+			word_delay_sck = DIV_U64_ROUND_UP((u64)word_delay_ns * spi_imx->spi_bus_clk,
+							  NSEC_PER_SEC);
+		}
+	}
+
+	if (!FIELD_FIT(MX51_ECSPI_PERIOD_MASK, word_delay_sck))
+		return -EINVAL;
+
+	writel(FIELD_PREP(MX51_ECSPI_PERIOD_MASK, word_delay_sck),
+	       spi_imx->base + MX51_ECSPI_PERIOD);
+
 	return 0;
 }
 
@@ -698,7 +786,6 @@ static void mx51_setup_wml(struct spi_imx_data *spi_imx)
 	writel(MX51_ECSPI_DMA_RX_WML(spi_imx->wml - 1) |
 		MX51_ECSPI_DMA_TX_WML(tx_wml) |
 		MX51_ECSPI_DMA_RXT_WML(spi_imx->wml) |
-		MX51_ECSPI_DMA_TEDEN | MX51_ECSPI_DMA_RXDEN |
 		MX51_ECSPI_DMA_RXTDEN, spi_imx->base + MX51_ECSPI_DMA);
 }
 
@@ -718,7 +805,7 @@ static void mx51_ecspi_reset(struct spi_imx_data *spi_imx)
 #define MX31_INTREG_RREN	(1 << 3)
 
 #define MX31_CSPICTRL_ENABLE	(1 << 0)
-#define MX31_CSPICTRL_MASTER	(1 << 1)
+#define MX31_CSPICTRL_HOST	(1 << 1)
 #define MX31_CSPICTRL_XCH	(1 << 2)
 #define MX31_CSPICTRL_SMC	(1 << 3)
 #define MX31_CSPICTRL_POL	(1 << 4)
@@ -773,9 +860,9 @@ static int mx31_prepare_message(struct spi_imx_data *spi_imx,
 }
 
 static int mx31_prepare_transfer(struct spi_imx_data *spi_imx,
-				 struct spi_device *spi)
+				 struct spi_device *spi, struct spi_transfer *t)
 {
-	unsigned int reg = MX31_CSPICTRL_ENABLE | MX31_CSPICTRL_MASTER;
+	unsigned int reg = MX31_CSPICTRL_ENABLE | MX31_CSPICTRL_HOST;
 	unsigned int clk;
 
 	reg |= spi_imx_clkdiv_2(spi_imx->spi_clk, spi_imx->spi_bus_clk, &clk) <<
@@ -845,7 +932,7 @@ static void mx31_reset(struct spi_imx_data *spi_imx)
 #define MX21_CSPICTRL_SSPOL	(1 << 8)
 #define MX21_CSPICTRL_XCH	(1 << 9)
 #define MX21_CSPICTRL_ENABLE	(1 << 10)
-#define MX21_CSPICTRL_MASTER	(1 << 11)
+#define MX21_CSPICTRL_HOST	(1 << 11)
 #define MX21_CSPICTRL_DR_SHIFT	14
 #define MX21_CSPICTRL_CS_SHIFT	19
 
@@ -877,9 +964,9 @@ static int mx21_prepare_message(struct spi_imx_data *spi_imx,
 }
 
 static int mx21_prepare_transfer(struct spi_imx_data *spi_imx,
-				 struct spi_device *spi)
+				 struct spi_device *spi, struct spi_transfer *t)
 {
-	unsigned int reg = MX21_CSPICTRL_ENABLE | MX21_CSPICTRL_MASTER;
+	unsigned int reg = MX21_CSPICTRL_ENABLE | MX21_CSPICTRL_HOST;
 	unsigned int max = is_imx27_cspi(spi_imx) ? 16 : 18;
 	unsigned int clk;
 
@@ -921,7 +1008,7 @@ static void mx21_reset(struct spi_imx_data *spi_imx)
 #define MX1_CSPICTRL_PHA	(1 << 5)
 #define MX1_CSPICTRL_XCH	(1 << 8)
 #define MX1_CSPICTRL_ENABLE	(1 << 9)
-#define MX1_CSPICTRL_MASTER	(1 << 10)
+#define MX1_CSPICTRL_HOST	(1 << 10)
 #define MX1_CSPICTRL_DR_SHIFT	13
 
 static void mx1_intctrl(struct spi_imx_data *spi_imx, int enable)
@@ -952,9 +1039,9 @@ static int mx1_prepare_message(struct spi_imx_data *spi_imx,
 }
 
 static int mx1_prepare_transfer(struct spi_imx_data *spi_imx,
-				struct spi_device *spi)
+				struct spi_device *spi, struct spi_transfer *t)
 {
-	unsigned int reg = MX1_CSPICTRL_ENABLE | MX1_CSPICTRL_MASTER;
+	unsigned int reg = MX1_CSPICTRL_ENABLE | MX1_CSPICTRL_HOST;
 	unsigned int clk;
 
 	reg |= spi_imx_clkdiv_2(spi_imx->spi_clk, spi_imx->spi_bus_clk, &clk) <<
@@ -993,7 +1080,7 @@ static struct spi_imx_devtype_data imx1_cspi_devtype_data = {
 	.fifo_size = 8,
 	.has_dmamode = false,
 	.dynamic_burst = false,
-	.has_slavemode = false,
+	.has_targetmode = false,
 	.devtype = IMX1_CSPI,
 };
 
@@ -1007,7 +1094,7 @@ static struct spi_imx_devtype_data imx21_cspi_devtype_data = {
 	.fifo_size = 8,
 	.has_dmamode = false,
 	.dynamic_burst = false,
-	.has_slavemode = false,
+	.has_targetmode = false,
 	.devtype = IMX21_CSPI,
 };
 
@@ -1022,7 +1109,7 @@ static struct spi_imx_devtype_data imx27_cspi_devtype_data = {
 	.fifo_size = 8,
 	.has_dmamode = false,
 	.dynamic_burst = false,
-	.has_slavemode = false,
+	.has_targetmode = false,
 	.devtype = IMX27_CSPI,
 };
 
@@ -1036,7 +1123,7 @@ static struct spi_imx_devtype_data imx31_cspi_devtype_data = {
 	.fifo_size = 8,
 	.has_dmamode = false,
 	.dynamic_burst = false,
-	.has_slavemode = false,
+	.has_targetmode = false,
 	.devtype = IMX31_CSPI,
 };
 
@@ -1049,9 +1136,9 @@ static struct spi_imx_devtype_data imx35_cspi_devtype_data = {
 	.rx_available = mx31_rx_available,
 	.reset = mx31_reset,
 	.fifo_size = 8,
-	.has_dmamode = true,
+	.has_dmamode = false,
 	.dynamic_burst = false,
-	.has_slavemode = false,
+	.has_targetmode = false,
 	.devtype = IMX35_CSPI,
 };
 
@@ -1066,7 +1153,7 @@ static struct spi_imx_devtype_data imx51_ecspi_devtype_data = {
 	.fifo_size = 64,
 	.has_dmamode = true,
 	.dynamic_burst = true,
-	.has_slavemode = true,
+	.has_targetmode = true,
 	.disable = mx51_ecspi_disable,
 	.devtype = IMX51_ECSPI,
 };
@@ -1080,7 +1167,7 @@ static struct spi_imx_devtype_data imx53_ecspi_devtype_data = {
 	.reset = mx51_ecspi_reset,
 	.fifo_size = 64,
 	.has_dmamode = true,
-	.has_slavemode = true,
+	.has_targetmode = true,
 	.disable = mx51_ecspi_disable,
 	.devtype = IMX53_ECSPI,
 };
@@ -1096,7 +1183,7 @@ static struct spi_imx_devtype_data imx6ul_ecspi_devtype_data = {
 	.fifo_size = 64,
 	.has_dmamode = true,
 	.dynamic_burst = true,
-	.has_slavemode = true,
+	.has_targetmode = true,
 	.tx_glitch_fixed = true,
 	.disable = mx51_ecspi_disable,
 	.devtype = IMX51_ECSPI,
@@ -1161,7 +1248,7 @@ static void spi_imx_push(struct spi_imx_data *spi_imx)
 		spi_imx->txfifo++;
 	}
 
-	if (!spi_imx->slave_mode)
+	if (!spi_imx->target_mode)
 		spi_imx->devtype_data->trigger(spi_imx);
 }
 
@@ -1247,25 +1334,31 @@ static int spi_imx_setupxfer(struct spi_device *spi,
 	if (!t)
 		return 0;
 
-	if (!t->speed_hz) {
-		if (!spi->max_speed_hz) {
-			dev_err(&spi->dev, "no speed_hz provided!\n");
-			return -EINVAL;
+	if (!spi_imx->target_mode) {
+		if (!t->speed_hz) {
+			if (!spi->max_speed_hz) {
+				dev_err(&spi->dev, "no speed_hz provided!\n");
+				return -EINVAL;
+			}
+			dev_dbg(&spi->dev, "using spi->max_speed_hz!\n");
+			spi_imx->spi_bus_clk = spi->max_speed_hz;
+		} else {
+			spi_imx->spi_bus_clk = t->speed_hz;
 		}
-		dev_dbg(&spi->dev, "using spi->max_speed_hz!\n");
-		spi_imx->spi_bus_clk = spi->max_speed_hz;
-	} else
-		spi_imx->spi_bus_clk = t->speed_hz;
+	}
 
 	spi_imx->bits_per_word = t->bits_per_word;
+	spi_imx->count = t->len;
 
 	/*
 	 * Initialize the functions for transfer. To transfer non byte-aligned
-	 * words, we have to use multiple word-size bursts, we can't use
-	 * dynamic_burst in that case.
+	 * words, we have to use multiple word-size bursts. To insert word
+	 * delay, the burst size has to equal the word size. We can't use
+	 * dynamic_burst in these cases.
 	 */
-	if (spi_imx->devtype_data->dynamic_burst && !spi_imx->slave_mode &&
+	if (spi_imx->devtype_data->dynamic_burst && !spi_imx->target_mode &&
 	    !(spi->mode & SPI_CS_WORD) &&
+	    !(t->word_delay.value) &&
 	    (spi_imx->bits_per_word == 8 ||
 	    spi_imx->bits_per_word == 16 ||
 	    spi_imx->bits_per_word == 32)) {
@@ -1296,13 +1389,13 @@ static int spi_imx_setupxfer(struct spi_device *spi,
 	spi_imx->rx_only = ((t->tx_buf == NULL)
 			|| (t->tx_buf == spi->controller->dummy_tx));
 
-	if (is_imx53_ecspi(spi_imx) && spi_imx->slave_mode) {
-		spi_imx->rx = mx53_ecspi_rx_slave;
-		spi_imx->tx = mx53_ecspi_tx_slave;
-		spi_imx->slave_burst = t->len;
+	if (spi_imx->target_mode) {
+		spi_imx->rx = mx53_ecspi_rx_target;
+		spi_imx->tx = mx53_ecspi_tx_target;
+		spi_imx->target_burst = t->len;
 	}
 
-	spi_imx->devtype_data->prepare_transfer(spi_imx, spi);
+	spi_imx->devtype_data->prepare_transfer(spi_imx, spi, t);
 
 	return 0;
 }
@@ -1333,7 +1426,7 @@ static int spi_imx_sdma_init(struct device *dev, struct spi_imx_data *spi_imx,
 	controller->dma_tx = dma_request_chan(dev, "tx");
 	if (IS_ERR(controller->dma_tx)) {
 		ret = PTR_ERR(controller->dma_tx);
-		dev_dbg(dev, "can't get the TX DMA channel, error %d!\n", ret);
+		dev_err_probe(dev, ret, "can't get the TX DMA channel!\n");
 		controller->dma_tx = NULL;
 		goto err;
 	}
@@ -1342,7 +1435,7 @@ static int spi_imx_sdma_init(struct device *dev, struct spi_imx_data *spi_imx,
 	controller->dma_rx = dma_request_chan(dev, "rx");
 	if (IS_ERR(controller->dma_rx)) {
 		ret = PTR_ERR(controller->dma_rx);
-		dev_dbg(dev, "can't get the RX DMA channel, error %d\n", ret);
+		dev_err_probe(dev, ret, "can't get the RX DMA channel!\n");
 		controller->dma_rx = NULL;
 		goto err;
 	}
@@ -1385,7 +1478,7 @@ static int spi_imx_calculate_timeout(struct spi_imx_data *spi_imx, int size)
 	timeout += 1;
 
 	/* Double calculated timeout */
-	return msecs_to_jiffies(2 * timeout * MSEC_PER_SEC);
+	return secs_to_jiffies(2 * timeout);
 }
 
 static int spi_imx_dma_transfer(struct spi_imx_data *spi_imx,
@@ -1393,7 +1486,7 @@ static int spi_imx_dma_transfer(struct spi_imx_data *spi_imx,
 {
 	struct dma_async_tx_descriptor *desc_tx, *desc_rx;
 	unsigned long transfer_timeout;
-	unsigned long timeout;
+	unsigned long time_left;
 	struct spi_controller *controller = spi_imx->controller;
 	struct sg_table *tx = &transfer->tx_sg, *rx = &transfer->rx_sg;
 	struct scatterlist *last_sg = sg_last(rx->sgl, rx->nents);
@@ -1456,21 +1549,23 @@ static int spi_imx_dma_transfer(struct spi_imx_data *spi_imx,
 	reinit_completion(&spi_imx->dma_tx_completion);
 	dma_async_issue_pending(controller->dma_tx);
 
+	spi_imx->devtype_data->trigger(spi_imx);
+
 	transfer_timeout = spi_imx_calculate_timeout(spi_imx, transfer->len);
 
 	/* Wait SDMA to finish the data transfer.*/
-	timeout = wait_for_completion_timeout(&spi_imx->dma_tx_completion,
+	time_left = wait_for_completion_timeout(&spi_imx->dma_tx_completion,
 						transfer_timeout);
-	if (!timeout) {
+	if (!time_left) {
 		dev_err(spi_imx->dev, "I/O Error in DMA TX\n");
 		dmaengine_terminate_all(controller->dma_tx);
 		dmaengine_terminate_all(controller->dma_rx);
 		return -ETIMEDOUT;
 	}
 
-	timeout = wait_for_completion_timeout(&spi_imx->dma_rx_completion,
-					      transfer_timeout);
-	if (!timeout) {
+	time_left = wait_for_completion_timeout(&spi_imx->dma_rx_completion,
+						transfer_timeout);
+	if (!time_left) {
 		dev_err(&controller->dev, "I/O Error in DMA RX\n");
 		spi_imx->devtype_data->reset(spi_imx);
 		dmaengine_terminate_all(controller->dma_rx);
@@ -1489,7 +1584,7 @@ static int spi_imx_pio_transfer(struct spi_device *spi,
 {
 	struct spi_imx_data *spi_imx = spi_controller_get_devdata(spi->controller);
 	unsigned long transfer_timeout;
-	unsigned long timeout;
+	unsigned long time_left;
 
 	spi_imx->tx_buf = transfer->tx_buf;
 	spi_imx->rx_buf = transfer->rx_buf;
@@ -1505,9 +1600,9 @@ static int spi_imx_pio_transfer(struct spi_device *spi,
 
 	transfer_timeout = spi_imx_calculate_timeout(spi_imx, transfer->len);
 
-	timeout = wait_for_completion_timeout(&spi_imx->xfer_done,
-					      transfer_timeout);
-	if (!timeout) {
+	time_left = wait_for_completion_timeout(&spi_imx->xfer_done,
+						transfer_timeout);
+	if (!time_left) {
 		dev_err(&spi->dev, "I/O Error in PIO\n");
 		spi_imx->devtype_data->reset(spi_imx);
 		return -ETIMEDOUT;
@@ -1564,14 +1659,13 @@ static int spi_imx_poll_transfer(struct spi_device *spi,
 	return 0;
 }
 
-static int spi_imx_pio_transfer_slave(struct spi_device *spi,
-				      struct spi_transfer *transfer)
+static int spi_imx_pio_transfer_target(struct spi_device *spi,
+				       struct spi_transfer *transfer)
 {
 	struct spi_imx_data *spi_imx = spi_controller_get_devdata(spi->controller);
 	int ret = 0;
 
-	if (is_imx53_ecspi(spi_imx) &&
-	    transfer->len > MX53_MAX_TRANSFER_BYTES) {
+	if (transfer->len > MX53_MAX_TRANSFER_BYTES) {
 		dev_err(&spi->dev, "Transaction too big, max size is %d bytes\n",
 			MX53_MAX_TRANSFER_BYTES);
 		return -EMSGSIZE;
@@ -1584,22 +1678,22 @@ static int spi_imx_pio_transfer_slave(struct spi_device *spi,
 	spi_imx->remainder = 0;
 
 	reinit_completion(&spi_imx->xfer_done);
-	spi_imx->slave_aborted = false;
+	spi_imx->target_aborted = false;
 
 	spi_imx_push(spi_imx);
 
 	spi_imx->devtype_data->intctrl(spi_imx, MXC_INT_TE | MXC_INT_RDR);
 
 	if (wait_for_completion_interruptible(&spi_imx->xfer_done) ||
-	    spi_imx->slave_aborted) {
+	    spi_imx->target_aborted) {
 		dev_dbg(&spi->dev, "interrupted\n");
 		ret = -EINTR;
 	}
 
-	/* ecspi has a HW issue when works in Slave mode,
+	/* ecspi has a HW issue when works in Target mode,
 	 * after 64 words writtern to TXFIFO, even TXFIFO becomes empty,
 	 * ECSPI_TXDATA keeps shift out the last word data,
-	 * so we have to disable ECSPI when in slave mode after the
+	 * so we have to disable ECSPI when in target mode after the
 	 * transfer completes
 	 */
 	if (spi_imx->devtype_data->disable)
@@ -1608,22 +1702,43 @@ static int spi_imx_pio_transfer_slave(struct spi_device *spi,
 	return ret;
 }
 
+static unsigned int spi_imx_transfer_estimate_time_us(struct spi_transfer *transfer)
+{
+	u64 result;
+
+	result = DIV_U64_ROUND_CLOSEST((u64)USEC_PER_SEC * transfer->len * BITS_PER_BYTE,
+				       transfer->effective_speed_hz);
+	if (transfer->word_delay.value) {
+		unsigned int word_delay_us;
+		unsigned int words;
+
+		words = DIV_ROUND_UP(transfer->len * BITS_PER_BYTE, transfer->bits_per_word);
+		word_delay_us = DIV_ROUND_CLOSEST(spi_delay_to_ns(&transfer->word_delay, transfer),
+						  NSEC_PER_USEC);
+		result += (u64)words * word_delay_us;
+	}
+
+	return min(result, U32_MAX);
+}
+
 static int spi_imx_transfer_one(struct spi_controller *controller,
 				struct spi_device *spi,
 				struct spi_transfer *transfer)
 {
+	int ret;
 	struct spi_imx_data *spi_imx = spi_controller_get_devdata(spi->controller);
-	unsigned long hz_per_byte, byte_limit;
 
-	spi_imx_setupxfer(spi, transfer);
+	ret = spi_imx_setupxfer(spi, transfer);
+	if (ret < 0)
+		return ret;
 	transfer->effective_speed_hz = spi_imx->spi_bus_clk;
 
 	/* flush rxfifo before transfer */
 	while (spi_imx->devtype_data->rx_available(spi_imx))
 		readl(spi_imx->base + MXC_CSPIRXDATA);
 
-	if (spi_imx->slave_mode)
-		return spi_imx_pio_transfer_slave(spi, transfer);
+	if (spi_imx->target_mode)
+		return spi_imx_pio_transfer_target(spi, transfer);
 
 	/*
 	 * If we decided in spi_imx_can_dma() that we want to do a DMA
@@ -1632,15 +1747,10 @@ static int spi_imx_transfer_one(struct spi_controller *controller,
 	 */
 	if (spi_imx->usedma)
 		return spi_imx_dma_transfer(spi_imx, transfer);
-	/*
-	 * Calculate the estimated time in us the transfer runs. Find
-	 * the number of Hz per byte per polling limit.
-	 */
-	hz_per_byte = polling_limit_us ? ((8 + 4) * USEC_PER_SEC) / polling_limit_us : 0;
-	byte_limit = hz_per_byte ? transfer->effective_speed_hz / hz_per_byte : 1;
 
 	/* run in polling mode for short transfers */
-	if (transfer->len < byte_limit)
+	if (transfer->len == 1 || (polling_limit_us &&
+				   spi_imx_transfer_estimate_time_us(transfer) < polling_limit_us))
 		return spi_imx_poll_transfer(spi, transfer);
 
 	return spi_imx_pio_transfer(spi, transfer);
@@ -1654,10 +1764,6 @@ static int spi_imx_setup(struct spi_device *spi)
 	return 0;
 }
 
-static void spi_imx_cleanup(struct spi_device *spi)
-{
-}
-
 static int
 spi_imx_prepare_message(struct spi_controller *controller, struct spi_message *msg)
 {
@@ -1672,7 +1778,6 @@ spi_imx_prepare_message(struct spi_controller *controller, struct spi_message *m
 
 	ret = spi_imx->devtype_data->prepare_message(spi_imx, msg);
 	if (ret) {
-		pm_runtime_mark_last_busy(spi_imx->dev);
 		pm_runtime_put_autosuspend(spi_imx->dev);
 	}
 
@@ -1684,16 +1789,15 @@ spi_imx_unprepare_message(struct spi_controller *controller, struct spi_message
 {
 	struct spi_imx_data *spi_imx = spi_controller_get_devdata(controller);
 
-	pm_runtime_mark_last_busy(spi_imx->dev);
 	pm_runtime_put_autosuspend(spi_imx->dev);
 	return 0;
 }
 
-static int spi_imx_slave_abort(struct spi_controller *controller)
+static int spi_imx_target_abort(struct spi_controller *controller)
 {
 	struct spi_imx_data *spi_imx = spi_controller_get_devdata(controller);
 
-	spi_imx->slave_aborted = true;
+	spi_imx->target_aborted = true;
 	complete(&spi_imx->xfer_done);
 
 	return 0;
@@ -1708,17 +1812,17 @@ static int spi_imx_probe(struct platform_device *pdev)
 	int ret, irq, spi_drctl;
 	const struct spi_imx_devtype_data *devtype_data =
 			of_device_get_match_data(&pdev->dev);
-	bool slave_mode;
+	bool target_mode;
 	u32 val;
 
-	slave_mode = devtype_data->has_slavemode &&
-			of_property_read_bool(np, "spi-slave");
-	if (slave_mode)
-		controller = spi_alloc_slave(&pdev->dev,
-					     sizeof(struct spi_imx_data));
-	else
-		controller = spi_alloc_master(&pdev->dev,
+	target_mode = devtype_data->has_targetmode &&
+		      of_property_read_bool(np, "spi-slave");
+	if (target_mode)
+		controller = spi_alloc_target(&pdev->dev,
 					      sizeof(struct spi_imx_data));
+	else
+		controller = spi_alloc_host(&pdev->dev,
+					    sizeof(struct spi_imx_data));
 	if (!controller)
 		return -ENOMEM;
 
@@ -1737,7 +1841,7 @@ static int spi_imx_probe(struct platform_device *pdev)
 	spi_imx = spi_controller_get_devdata(controller);
 	spi_imx->controller = controller;
 	spi_imx->dev = &pdev->dev;
-	spi_imx->slave_mode = slave_mode;
+	spi_imx->target_mode = target_mode;
 
 	spi_imx->devtype_data = devtype_data;
 
@@ -1754,10 +1858,10 @@ static int spi_imx_probe(struct platform_device *pdev)
 
 	controller->transfer_one = spi_imx_transfer_one;
 	controller->setup = spi_imx_setup;
-	controller->cleanup = spi_imx_cleanup;
 	controller->prepare_message = spi_imx_prepare_message;
 	controller->unprepare_message = spi_imx_unprepare_message;
-	controller->slave_abort = spi_imx_slave_abort;
+	controller->target_abort = spi_imx_target_abort;
+	spi_imx->spi_bus_clk = MXC_SPI_DEFAULT_SPEED;
 	controller->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_NO_CS |
 				SPI_MOSI_IDLE_LOW;
 
@@ -1779,7 +1883,7 @@ static int spi_imx_probe(struct platform_device *pdev)
 
 	if (is_imx51_ecspi(spi_imx) || is_imx53_ecspi(spi_imx)) {
 		controller->max_native_cs = 4;
-		controller->flags |= SPI_MASTER_GPIO_SS;
+		controller->flags |= SPI_CONTROLLER_GPIO_SS;
 	}
 
 	spi_imx->spi_drctl = spi_drctl;
@@ -1858,7 +1962,6 @@ static int spi_imx_probe(struct platform_device *pdev)
 		goto out_register_controller;
 	}
 
-	pm_runtime_mark_last_busy(spi_imx->dev);
 	pm_runtime_put_autosuspend(spi_imx->dev);
 
 	return ret;
@@ -1868,8 +1971,8 @@ out_register_controller:
 		spi_imx_sdma_exit(spi_imx);
 out_runtime_pm_put:
 	pm_runtime_dont_use_autosuspend(spi_imx->dev);
-	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_disable(spi_imx->dev);
+	pm_runtime_set_suspended(&pdev->dev);
 
 	clk_disable_unprepare(spi_imx->clk_ipg);
 out_put_per:
@@ -1901,7 +2004,7 @@ static void spi_imx_remove(struct platform_device *pdev)
 	spi_imx_sdma_exit(spi_imx);
 }
 
-static int __maybe_unused spi_imx_runtime_resume(struct device *dev)
+static int spi_imx_runtime_resume(struct device *dev)
 {
 	struct spi_controller *controller = dev_get_drvdata(dev);
 	struct spi_imx_data *spi_imx;
@@ -1922,7 +2025,7 @@ static int __maybe_unused spi_imx_runtime_resume(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused spi_imx_runtime_suspend(struct device *dev)
+static int spi_imx_runtime_suspend(struct device *dev)
 {
 	struct spi_controller *controller = dev_get_drvdata(dev);
 	struct spi_imx_data *spi_imx;
@@ -1935,32 +2038,31 @@ static int __maybe_unused spi_imx_runtime_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused spi_imx_suspend(struct device *dev)
+static int spi_imx_suspend(struct device *dev)
 {
 	pinctrl_pm_select_sleep_state(dev);
 	return 0;
 }
 
-static int __maybe_unused spi_imx_resume(struct device *dev)
+static int spi_imx_resume(struct device *dev)
 {
 	pinctrl_pm_select_default_state(dev);
 	return 0;
 }
 
 static const struct dev_pm_ops imx_spi_pm = {
-	SET_RUNTIME_PM_OPS(spi_imx_runtime_suspend,
-				spi_imx_runtime_resume, NULL)
-	SET_SYSTEM_SLEEP_PM_OPS(spi_imx_suspend, spi_imx_resume)
+	RUNTIME_PM_OPS(spi_imx_runtime_suspend,	spi_imx_runtime_resume, NULL)
+	SYSTEM_SLEEP_PM_OPS(spi_imx_suspend, spi_imx_resume)
 };
 
 static struct platform_driver spi_imx_driver = {
 	.driver = {
 		   .name = DRIVER_NAME,
 		   .of_match_table = spi_imx_dt_ids,
-		   .pm = &imx_spi_pm,
+		   .pm = pm_ptr(&imx_spi_pm),
 	},
 	.probe = spi_imx_probe,
-	.remove_new = spi_imx_remove,
+	.remove = spi_imx_remove,
 };
 module_platform_driver(spi_imx_driver);