[PATCH 09/10] spi: fsl-espi: introduce struct fsl_espi

[Heiner Kallweit <hkallweit1@xxxxxxxxx>]

Only few members of struct mpc8xxx_spi are relevant for fsl-espi.
Therefore replace it with a ESPI-specific struct fsl_espi.
Replace variable names mpc8xxx_spi and mspi with espi.

Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
---
 drivers/spi/spi-fsl-espi.c | 270 ++++++++++++++++++++++++---------------------
 1 file changed, 143 insertions(+), 127 deletions(-)

diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c
index 7a90343..8539f05 100644
--- a/drivers/spi/spi-fsl-espi.c
+++ b/drivers/spi/spi-fsl-espi.c
@@ -93,30 +93,49 @@
 
 #define AUTOSUSPEND_TIMEOUT 2000
 
+struct fsl_espi {
+	struct device *dev;
+	void __iomem *reg_base;
+
+	const void *tx;
+	void *rx;
+
+	unsigned int rx_len;
+	unsigned int tx_len;
+	unsigned int rxskip;
+
+	u8 *local_buf;
+	spinlock_t lock;
+
+	u32 spibrg;             /* SPIBRG input clock */
+
+	struct completion done;
+};
+
 struct fsl_espi_cs {
 	u32 hw_mode;
 };
 
-static inline u32 fsl_espi_read_reg(struct mpc8xxx_spi *mspi, int offset)
+static inline u32 fsl_espi_read_reg(struct fsl_espi *espi, int offset)
 {
-	return ioread32be(mspi->reg_base + offset);
+	return ioread32be(espi->reg_base + offset);
 }
 
-static inline u8 fsl_espi_read_reg8(struct mpc8xxx_spi *mspi, int offset)
+static inline u8 fsl_espi_read_reg8(struct fsl_espi *espi, int offset)
 {
-	return ioread8(mspi->reg_base + offset);
+	return ioread8(espi->reg_base + offset);
 }
 
-static inline void fsl_espi_write_reg(struct mpc8xxx_spi *mspi, int offset,
+static inline void fsl_espi_write_reg(struct fsl_espi *espi, int offset,
 				      u32 val)
 {
-	iowrite32be(val, mspi->reg_base + offset);
+	iowrite32be(val, espi->reg_base + offset);
 }
 
-static inline void fsl_espi_write_reg8(struct mpc8xxx_spi *mspi, int offset,
+static inline void fsl_espi_write_reg8(struct fsl_espi *espi, int offset,
 				       u8 val)
 {
-	iowrite8(val, mspi->reg_base + offset);
+	iowrite8(val, espi->reg_base + offset);
 }
 
 static void fsl_espi_memcpy_swab(void *to, const void *from,
@@ -146,26 +165,26 @@ static void fsl_espi_memcpy_swab(void *to, const void *from,
 }
 
 static void fsl_espi_copy_to_buf(struct spi_message *m,
-				 struct mpc8xxx_spi *mspi)
+				 struct fsl_espi *espi)
 {
 	struct spi_transfer *t;
-	u8 *buf = mspi->local_buf;
+	u8 *buf = espi->local_buf;
 
 	list_for_each_entry(t, &m->transfers, transfer_list) {
 		if (t->tx_buf)
 			fsl_espi_memcpy_swab(buf, t->tx_buf, m, t);
 		/* In RXSKIP mode controller shifts out zeros internally */
-		else if (!mspi->rxskip)
+		else if (!espi->rxskip)
 			memset(buf, 0, t->len);
 		buf += t->len;
 	}
 }
 
 static void fsl_espi_copy_from_buf(struct spi_message *m,
-				   struct mpc8xxx_spi *mspi)
+				   struct fsl_espi *espi)
 {
 	struct spi_transfer *t;
-	u8 *buf = mspi->local_buf;
+	u8 *buf = espi->local_buf;
 
 	list_for_each_entry(t, &m->transfers, transfer_list) {
 		if (t->rx_buf)
@@ -176,11 +195,11 @@ static void fsl_espi_copy_from_buf(struct spi_message *m,
 
 static int fsl_espi_check_message(struct spi_message *m)
 {
-	struct mpc8xxx_spi *mspi = spi_master_get_devdata(m->spi->master);
+	struct fsl_espi *espi = spi_master_get_devdata(m->spi->master);
 	struct spi_transfer *t, *first;
 
 	if (m->frame_length > SPCOM_TRANLEN_MAX) {
-		dev_err(mspi->dev, "message too long, size is %u bytes\n",
+		dev_err(espi->dev, "message too long, size is %u bytes\n",
 			m->frame_length);
 		return -EMSGSIZE;
 	}
@@ -191,7 +210,7 @@ static int fsl_espi_check_message(struct spi_message *m)
 	list_for_each_entry(t, &m->transfers, transfer_list) {
 		if (first->bits_per_word != t->bits_per_word ||
 		    first->speed_hz != t->speed_hz) {
-			dev_err(mspi->dev, "bits_per_word/speed_hz should be the same for all transfers\n");
+			dev_err(espi->dev, "bits_per_word/speed_hz should be the same for all transfers\n");
 			return -EINVAL;
 		}
 	}
@@ -199,7 +218,7 @@ static int fsl_espi_check_message(struct spi_message *m)
 	/* ESPI supports MSB-first transfers for word size 8 / 16 only */
 	if (!(m->spi->mode & SPI_LSB_FIRST) && first->bits_per_word != 8 &&
 	    first->bits_per_word != 16) {
-		dev_err(mspi->dev,
+		dev_err(espi->dev,
 			"MSB-first transfer not supported for wordsize %u\n",
 			first->bits_per_word);
 		return -EINVAL;
@@ -239,41 +258,41 @@ static unsigned int fsl_espi_check_rxskip_mode(struct spi_message *m)
 	return i == 2 ? rxskip : 0;
 }
 
-static void fsl_espi_fill_tx_fifo(struct mpc8xxx_spi *mspi, u32 events)
+static void fsl_espi_fill_tx_fifo(struct fsl_espi *espi, u32 events)
 {
 	u32 tx_fifo_avail;
 
 	/* if events is zero transfer has not started and tx fifo is empty */
 	tx_fifo_avail = events ? SPIE_TXCNT(events) :  FSL_ESPI_FIFO_SIZE;
 
-	while (tx_fifo_avail >= min(4U, mspi->tx_len) && mspi->tx_len)
-		if (mspi->tx_len >= 4) {
-			fsl_espi_write_reg(mspi, ESPI_SPITF, *(u32 *)mspi->tx);
-			mspi->tx += 4;
-			mspi->tx_len -= 4;
+	while (tx_fifo_avail >= min(4U, espi->tx_len) && espi->tx_len)
+		if (espi->tx_len >= 4) {
+			fsl_espi_write_reg(espi, ESPI_SPITF, *(u32 *)espi->tx);
+			espi->tx += 4;
+			espi->tx_len -= 4;
 			tx_fifo_avail -= 4;
 		} else {
-			fsl_espi_write_reg8(mspi, ESPI_SPITF, *(u8 *)mspi->tx);
-			mspi->tx += 1;
-			mspi->tx_len -= 1;
+			fsl_espi_write_reg8(espi, ESPI_SPITF, *(u8 *)espi->tx);
+			espi->tx += 1;
+			espi->tx_len -= 1;
 			tx_fifo_avail -= 1;
 		}
 }
 
-static void fsl_espi_read_rx_fifo(struct mpc8xxx_spi *mspi, u32 events)
+static void fsl_espi_read_rx_fifo(struct fsl_espi *espi, u32 events)
 {
 	u32 rx_fifo_avail = SPIE_RXCNT(events);
 
-	while (rx_fifo_avail >= min(4U, mspi->rx_len) && mspi->rx_len)
-		if (mspi->rx_len >= 4) {
-			*(u32 *)mspi->rx = fsl_espi_read_reg(mspi, ESPI_SPIRF);
-			mspi->rx += 4;
-			mspi->rx_len -= 4;
+	while (rx_fifo_avail >= min(4U, espi->rx_len) && espi->rx_len)
+		if (espi->rx_len >= 4) {
+			*(u32 *)espi->rx = fsl_espi_read_reg(espi, ESPI_SPIRF);
+			espi->rx += 4;
+			espi->rx_len -= 4;
 			rx_fifo_avail -= 4;
 		} else {
-			*(u8 *)mspi->rx = fsl_espi_read_reg8(mspi, ESPI_SPIRF);
-			mspi->rx += 1;
-			mspi->rx_len -= 1;
+			*(u8 *)espi->rx = fsl_espi_read_reg8(espi, ESPI_SPIRF);
+			espi->rx += 1;
+			espi->rx_len -= 1;
 			rx_fifo_avail -= 1;
 		}
 }
@@ -281,7 +300,7 @@ static void fsl_espi_read_rx_fifo(struct mpc8xxx_spi *mspi, u32 events)
 static void fsl_espi_setup_transfer(struct spi_device *spi,
 					struct spi_transfer *t)
 {
-	struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master);
+	struct fsl_espi *espi = spi_master_get_devdata(spi->master);
 	int bits_per_word = t ? t->bits_per_word : spi->bits_per_word;
 	u32 pm, hz = t ? t->speed_hz : spi->max_speed_hz;
 	struct fsl_espi_cs *cs = spi_get_ctldata(spi);
@@ -292,16 +311,16 @@ static void fsl_espi_setup_transfer(struct spi_device *spi,
 
 	cs->hw_mode |= CSMODE_LEN(bits_per_word - 1);
 
-	pm = DIV_ROUND_UP(mpc8xxx_spi->spibrg, hz * 4) - 1;
+	pm = DIV_ROUND_UP(espi->spibrg, hz * 4) - 1;
 
 	if (pm > 15) {
 		cs->hw_mode |= CSMODE_DIV16;
-		pm = DIV_ROUND_UP(mpc8xxx_spi->spibrg, hz * 16 * 4) - 1;
+		pm = DIV_ROUND_UP(espi->spibrg, hz * 16 * 4) - 1;
 
 		WARN_ONCE(pm > 15,
 			  "%s: Requested speed is too low: %u Hz. Will use %u Hz instead.\n",
 			  dev_name(&spi->dev), hz,
-			  mpc8xxx_spi->spibrg / (4 * 16 * (15 + 1)));
+			  espi->spibrg / (4 * 16 * (15 + 1)));
 		if (pm > 15)
 			pm = 15;
 	}
@@ -310,77 +329,77 @@ static void fsl_espi_setup_transfer(struct spi_device *spi,
 
 	/* don't write the mode register if the mode doesn't change */
 	if (cs->hw_mode != hw_mode_old)
-		fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPMODEx(spi->chip_select),
+		fsl_espi_write_reg(espi, ESPI_SPMODEx(spi->chip_select),
 				   cs->hw_mode);
 }
 
 static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t)
 {
-	struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master);
+	struct fsl_espi *espi = spi_master_get_devdata(spi->master);
 	u32 mask, spcom;
 	int ret;
 
-	mpc8xxx_spi->rx_len = t->len;
-	mpc8xxx_spi->tx_len = t->len;
+	espi->rx_len = t->len;
+	espi->tx_len = t->len;
 
-	mpc8xxx_spi->tx = t->tx_buf;
-	mpc8xxx_spi->rx = t->rx_buf;
+	espi->tx = t->tx_buf;
+	espi->rx = t->rx_buf;
 
-	reinit_completion(&mpc8xxx_spi->done);
+	reinit_completion(&espi->done);
 
 	/* Set SPCOM[CS] and SPCOM[TRANLEN] field */
 	spcom = SPCOM_CS(spi->chip_select);
 	spcom |= SPCOM_TRANLEN(t->len - 1);
 
 	/* configure RXSKIP mode */
-	if (mpc8xxx_spi->rxskip) {
-		spcom |= SPCOM_RXSKIP(mpc8xxx_spi->rxskip);
-		mpc8xxx_spi->tx_len = mpc8xxx_spi->rxskip;
-		mpc8xxx_spi->rx_len = t->len - mpc8xxx_spi->rxskip;
-		mpc8xxx_spi->rx = t->rx_buf + mpc8xxx_spi->rxskip;
+	if (espi->rxskip) {
+		spcom |= SPCOM_RXSKIP(espi->rxskip);
+		espi->tx_len = espi->rxskip;
+		espi->rx_len = t->len - espi->rxskip;
+		espi->rx = t->rx_buf + espi->rxskip;
 		if (t->rx_nbits == SPI_NBITS_DUAL)
 			spcom |= SPCOM_DO;
 	}
 
-	fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPCOM, spcom);
+	fsl_espi_write_reg(espi, ESPI_SPCOM, spcom);
 
 	/* enable interrupts */
 	mask = SPIM_DON;
-	if (mpc8xxx_spi->rx_len > FSL_ESPI_FIFO_SIZE)
+	if (espi->rx_len > FSL_ESPI_FIFO_SIZE)
 		mask |= SPIM_RXT;
-	fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPIM, mask);
+	fsl_espi_write_reg(espi, ESPI_SPIM, mask);
 
 	/* Prevent filling the fifo from getting interrupted */
-	spin_lock_irq(&mpc8xxx_spi->lock);
-	fsl_espi_fill_tx_fifo(mpc8xxx_spi, 0);
-	spin_unlock_irq(&mpc8xxx_spi->lock);
+	spin_lock_irq(&espi->lock);
+	fsl_espi_fill_tx_fifo(espi, 0);
+	spin_unlock_irq(&espi->lock);
 
 	/* Won't hang up forever, SPI bus sometimes got lost interrupts... */
-	ret = wait_for_completion_timeout(&mpc8xxx_spi->done, 2 * HZ);
+	ret = wait_for_completion_timeout(&espi->done, 2 * HZ);
 	if (ret == 0)
-		dev_err(mpc8xxx_spi->dev,
+		dev_err(espi->dev,
 			"Transaction hanging up (left %u tx bytes, %u rx bytes)\n",
-			mpc8xxx_spi->tx_len, mpc8xxx_spi->rx_len);
+			espi->tx_len, espi->rx_len);
 
 	/* disable rx ints */
-	fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPIM, 0);
+	fsl_espi_write_reg(espi, ESPI_SPIM, 0);
 
 	return ret == 0 ? -ETIMEDOUT : 0;
 }
 
 static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans)
 {
-	struct mpc8xxx_spi *mspi = spi_master_get_devdata(m->spi->master);
+	struct fsl_espi *espi = spi_master_get_devdata(m->spi->master);
 	struct spi_device *spi = m->spi;
 	int ret;
 
-	mspi->rxskip = fsl_espi_check_rxskip_mode(m);
-	if (trans->rx_nbits == SPI_NBITS_DUAL && !mspi->rxskip) {
-		dev_err(mspi->dev, "Dual output mode requires RXSKIP mode!\n");
+	espi->rxskip = fsl_espi_check_rxskip_mode(m);
+	if (trans->rx_nbits == SPI_NBITS_DUAL && !espi->rxskip) {
+		dev_err(espi->dev, "Dual output mode requires RXSKIP mode!\n");
 		return -EINVAL;
 	}
 
-	fsl_espi_copy_to_buf(m, mspi);
+	fsl_espi_copy_to_buf(m, espi);
 	fsl_espi_setup_transfer(spi, trans);
 
 	ret = fsl_espi_bufs(spi, trans);
@@ -389,7 +408,7 @@ static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans)
 		udelay(trans->delay_usecs);
 
 	if (!ret)
-		fsl_espi_copy_from_buf(m, mspi);
+		fsl_espi_copy_from_buf(m, espi);
 
 	return ret;
 }
@@ -397,7 +416,7 @@ static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans)
 static int fsl_espi_do_one_msg(struct spi_master *master,
 			       struct spi_message *m)
 {
-	struct mpc8xxx_spi *mspi = spi_master_get_devdata(m->spi->master);
+	struct fsl_espi *espi = spi_master_get_devdata(m->spi->master);
 	unsigned int delay_usecs = 0, rx_nbits = 0;
 	struct spi_transfer *t, trans = {};
 	int ret;
@@ -420,8 +439,8 @@ static int fsl_espi_do_one_msg(struct spi_master *master,
 	trans.speed_hz = t->speed_hz;
 	trans.bits_per_word = t->bits_per_word;
 	trans.delay_usecs = delay_usecs;
-	trans.tx_buf = mspi->local_buf;
-	trans.rx_buf = mspi->local_buf;
+	trans.tx_buf = espi->local_buf;
+	trans.rx_buf = espi->local_buf;
 	trans.rx_nbits = rx_nbits;
 
 	if (trans.len)
@@ -439,7 +458,7 @@ static int fsl_espi_do_one_msg(struct spi_master *master,
 
 static int fsl_espi_setup(struct spi_device *spi)
 {
-	struct mpc8xxx_spi *mpc8xxx_spi;
+	struct fsl_espi *espi;
 	u32 loop_mode;
 	struct fsl_espi_cs *cs = spi_get_ctldata(spi);
 
@@ -453,12 +472,11 @@ static int fsl_espi_setup(struct spi_device *spi)
 		spi_set_ctldata(spi, cs);
 	}
 
-	mpc8xxx_spi = spi_master_get_devdata(spi->master);
+	espi = spi_master_get_devdata(spi->master);
 
-	pm_runtime_get_sync(mpc8xxx_spi->dev);
+	pm_runtime_get_sync(espi->dev);
 
-	cs->hw_mode = fsl_espi_read_reg(mpc8xxx_spi,
-					   ESPI_SPMODEx(spi->chip_select));
+	cs->hw_mode = fsl_espi_read_reg(espi, ESPI_SPMODEx(spi->chip_select));
 	/* mask out bits we are going to set */
 	cs->hw_mode &= ~(CSMODE_CP_BEGIN_EDGECLK | CSMODE_CI_INACTIVEHIGH
 			 | CSMODE_REV);
@@ -471,16 +489,16 @@ static int fsl_espi_setup(struct spi_device *spi)
 		cs->hw_mode |= CSMODE_REV;
 
 	/* Handle the loop mode */
-	loop_mode = fsl_espi_read_reg(mpc8xxx_spi, ESPI_SPMODE);
+	loop_mode = fsl_espi_read_reg(espi, ESPI_SPMODE);
 	loop_mode &= ~SPMODE_LOOP;
 	if (spi->mode & SPI_LOOP)
 		loop_mode |= SPMODE_LOOP;
-	fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPMODE, loop_mode);
+	fsl_espi_write_reg(espi, ESPI_SPMODE, loop_mode);
 
 	fsl_espi_setup_transfer(spi, NULL);
 
-	pm_runtime_mark_last_busy(mpc8xxx_spi->dev);
-	pm_runtime_put_autosuspend(mpc8xxx_spi->dev);
+	pm_runtime_mark_last_busy(espi->dev);
+	pm_runtime_put_autosuspend(espi->dev);
 
 	return 0;
 }
@@ -493,52 +511,52 @@ static void fsl_espi_cleanup(struct spi_device *spi)
 	spi_set_ctldata(spi, NULL);
 }
 
-static void fsl_espi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events)
+static void fsl_espi_cpu_irq(struct fsl_espi *espi, u32 events)
 {
-	if (mspi->rx_len)
-		fsl_espi_read_rx_fifo(mspi, events);
+	if (espi->rx_len)
+		fsl_espi_read_rx_fifo(espi, events);
 
-	if (mspi->tx_len)
-		fsl_espi_fill_tx_fifo(mspi, events);
+	if (espi->tx_len)
+		fsl_espi_fill_tx_fifo(espi, events);
 
-	if (mspi->tx_len || mspi->rx_len)
+	if (espi->tx_len || espi->rx_len)
 		return;
 
 	/* we're done, but check for errors before returning */
-	events = fsl_espi_read_reg(mspi, ESPI_SPIE);
+	events = fsl_espi_read_reg(espi, ESPI_SPIE);
 
 	if (!(events & SPIE_DON))
-		dev_err(mspi->dev,
+		dev_err(espi->dev,
 			"Transfer done but SPIE_DON isn't set!\n");
 
 	if (SPIE_RXCNT(events) || SPIE_TXCNT(events) != FSL_ESPI_FIFO_SIZE)
-		dev_err(mspi->dev, "Transfer done but rx/tx fifo's aren't empty!\n");
+		dev_err(espi->dev, "Transfer done but rx/tx fifo's aren't empty!\n");
 
-	complete(&mspi->done);
+	complete(&espi->done);
 }
 
 static irqreturn_t fsl_espi_irq(s32 irq, void *context_data)
 {
-	struct mpc8xxx_spi *mspi = context_data;
+	struct fsl_espi *espi = context_data;
 	u32 events;
 
-	spin_lock(&mspi->lock);
+	spin_lock(&espi->lock);
 
 	/* Get interrupt events(tx/rx) */
-	events = fsl_espi_read_reg(mspi, ESPI_SPIE);
+	events = fsl_espi_read_reg(espi, ESPI_SPIE);
 	if (!events) {
-		spin_unlock(&mspi->lock);
+		spin_unlock(&espi->lock);
 		return IRQ_NONE;
 	}
 
-	dev_vdbg(mspi->dev, "%s: events %x\n", __func__, events);
+	dev_vdbg(espi->dev, "%s: events %x\n", __func__, events);
 
-	fsl_espi_cpu_irq(mspi, events);
+	fsl_espi_cpu_irq(espi, events);
 
 	/* Clear the events */
-	fsl_espi_write_reg(mspi, ESPI_SPIE, events);
+	fsl_espi_write_reg(espi, ESPI_SPIE, events);
 
-	spin_unlock(&mspi->lock);
+	spin_unlock(&espi->lock);
 
 	return IRQ_HANDLED;
 }
@@ -547,12 +565,12 @@ static irqreturn_t fsl_espi_irq(s32 irq, void *context_data)
 static int fsl_espi_runtime_suspend(struct device *dev)
 {
 	struct spi_master *master = dev_get_drvdata(dev);
-	struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(master);
+	struct fsl_espi *espi = spi_master_get_devdata(master);
 	u32 regval;
 
-	regval = fsl_espi_read_reg(mpc8xxx_spi, ESPI_SPMODE);
+	regval = fsl_espi_read_reg(espi, ESPI_SPMODE);
 	regval &= ~SPMODE_ENABLE;
-	fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPMODE, regval);
+	fsl_espi_write_reg(espi, ESPI_SPMODE, regval);
 
 	return 0;
 }
@@ -560,12 +578,12 @@ static int fsl_espi_runtime_suspend(struct device *dev)
 static int fsl_espi_runtime_resume(struct device *dev)
 {
 	struct spi_master *master = dev_get_drvdata(dev);
-	struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(master);
+	struct fsl_espi *espi = spi_master_get_devdata(master);
 	u32 regval;
 
-	regval = fsl_espi_read_reg(mpc8xxx_spi, ESPI_SPMODE);
+	regval = fsl_espi_read_reg(espi, ESPI_SPMODE);
 	regval |= SPMODE_ENABLE;
-	fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPMODE, regval);
+	fsl_espi_write_reg(espi, ESPI_SPMODE, regval);
 
 	return 0;
 }
@@ -579,16 +597,16 @@ static size_t fsl_espi_max_message_size(struct spi_device *spi)
 static void fsl_espi_init_regs(struct device *dev, bool initial)
 {
 	struct spi_master *master = dev_get_drvdata(dev);
-	struct mpc8xxx_spi *mspi = spi_master_get_devdata(master);
+	struct fsl_espi *espi = spi_master_get_devdata(master);
 	struct device_node *nc;
 	u32 csmode, cs, prop;
 	int ret;
 
 	/* SPI controller initializations */
-	fsl_espi_write_reg(mspi, ESPI_SPMODE, 0);
-	fsl_espi_write_reg(mspi, ESPI_SPIM, 0);
-	fsl_espi_write_reg(mspi, ESPI_SPCOM, 0);
-	fsl_espi_write_reg(mspi, ESPI_SPIE, 0xffffffff);
+	fsl_espi_write_reg(espi, ESPI_SPMODE, 0);
+	fsl_espi_write_reg(espi, ESPI_SPIM, 0);
+	fsl_espi_write_reg(espi, ESPI_SPCOM, 0);
+	fsl_espi_write_reg(espi, ESPI_SPIE, 0xffffffff);
 
 	/* Init eSPI CS mode register */
 	for_each_available_child_of_node(master->dev.of_node, nc) {
@@ -613,24 +631,24 @@ static void fsl_espi_init_regs(struct device *dev, bool initial)
 			csmode |= CSMODE_AFT(prop);
 		}
 
-		fsl_espi_write_reg(mspi, ESPI_SPMODEx(cs), csmode);
+		fsl_espi_write_reg(espi, ESPI_SPMODEx(cs), csmode);
 
 		if (initial)
 			dev_info(dev, "cs=%u, init_csmode=0x%x\n", cs, csmode);
 	}
 
 	/* Enable SPI interface */
-	fsl_espi_write_reg(mspi, ESPI_SPMODE, SPMODE_INIT_VAL | SPMODE_ENABLE);
+	fsl_espi_write_reg(espi, ESPI_SPMODE, SPMODE_INIT_VAL | SPMODE_ENABLE);
 }
 
 static int fsl_espi_probe(struct device *dev, struct resource *mem,
 			  unsigned int irq, unsigned int num_cs)
 {
 	struct spi_master *master;
-	struct mpc8xxx_spi *mpc8xxx_spi;
+	struct fsl_espi *espi;
 	int ret;
 
-	master = spi_alloc_master(dev, sizeof(struct mpc8xxx_spi));
+	master = spi_alloc_master(dev, sizeof(struct fsl_espi));
 	if (!master)
 		return -ENOMEM;
 
@@ -647,35 +665,33 @@ static int fsl_espi_probe(struct device *dev, struct resource *mem,
 	master->max_message_size = fsl_espi_max_message_size;
 	master->num_chipselect = num_cs;
 
-	mpc8xxx_spi = spi_master_get_devdata(master);
-	spin_lock_init(&mpc8xxx_spi->lock);
+	espi = spi_master_get_devdata(master);
+	spin_lock_init(&espi->lock);
 
-	mpc8xxx_spi->dev = dev;
-	mpc8xxx_spi->spibrg = fsl_get_sys_freq();
-	if (mpc8xxx_spi->spibrg == -1) {
+	espi->dev = dev;
+	espi->spibrg = fsl_get_sys_freq();
+	if (espi->spibrg == -1) {
 		dev_err(dev, "Can't get sys frequency!\n");
 		ret = -EINVAL;
 		goto err_probe;
 	}
 
-	init_completion(&mpc8xxx_spi->done);
+	init_completion(&espi->done);
 
-	mpc8xxx_spi->local_buf =
-		devm_kmalloc(dev, SPCOM_TRANLEN_MAX, GFP_KERNEL);
-	if (!mpc8xxx_spi->local_buf) {
+	espi->local_buf = devm_kmalloc(dev, SPCOM_TRANLEN_MAX, GFP_KERNEL);
+	if (!espi->local_buf) {
 		ret = -ENOMEM;
 		goto err_probe;
 	}
 
-	mpc8xxx_spi->reg_base = devm_ioremap_resource(dev, mem);
-	if (IS_ERR(mpc8xxx_spi->reg_base)) {
-		ret = PTR_ERR(mpc8xxx_spi->reg_base);
+	espi->reg_base = devm_ioremap_resource(dev, mem);
+	if (IS_ERR(espi->reg_base)) {
+		ret = PTR_ERR(espi->reg_base);
 		goto err_probe;
 	}
 
 	/* Register for SPI Interrupt */
-	ret = devm_request_irq(dev, irq, fsl_espi_irq, 0, "fsl_espi",
-			       mpc8xxx_spi);
+	ret = devm_request_irq(dev, irq, fsl_espi_irq, 0, "fsl_espi", espi);
 	if (ret)
 		goto err_probe;
 
@@ -691,7 +707,7 @@ static int fsl_espi_probe(struct device *dev, struct resource *mem,
 	if (ret < 0)
 		goto err_pm;
 
-	dev_info(dev, "at 0x%p (irq = %u)\n", mpc8xxx_spi->reg_base, irq);
+	dev_info(dev, "at 0x%p (irq = %u)\n", espi->reg_base, irq);
 
 	pm_runtime_mark_last_busy(dev);
 	pm_runtime_put_autosuspend(dev);
-- 
2.10.1


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