lkml.org 
[lkml]   [2018]   [Dec]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 07/14] spi: stm32: rename STM32 SPI registers to STM32H7
Date
From: Cezary Gapinski <cezary.gapinski@gmail.com>

Rename STM32 SPI registers to be related to STM32H7 SPI driver
and not STM32 generally.

Signed-off-by: Cezary Gapinski <cezary.gapinski@gmail.com>
---
drivers/spi/spi-stm32.c | 381 +++++++++++++++++++++++++-----------------------
1 file changed, 199 insertions(+), 182 deletions(-)

diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c
index b639be7..2ece69a 100644
--- a/drivers/spi/spi-stm32.c
+++ b/drivers/spi/spi-stm32.c
@@ -20,86 +20,86 @@

#define DRIVER_NAME "spi_stm32"

-/* STM32 SPI registers */
-#define STM32_SPI_CR1 0x00
-#define STM32_SPI_CR2 0x04
-#define STM32_SPI_CFG1 0x08
-#define STM32_SPI_CFG2 0x0C
-#define STM32_SPI_IER 0x10
-#define STM32_SPI_SR 0x14
-#define STM32_SPI_IFCR 0x18
-#define STM32_SPI_TXDR 0x20
-#define STM32_SPI_RXDR 0x30
-#define STM32_SPI_I2SCFGR 0x50
-
-/* STM32_SPI_CR1 bit fields */
-#define SPI_CR1_SPE BIT(0)
-#define SPI_CR1_MASRX BIT(8)
-#define SPI_CR1_CSTART BIT(9)
-#define SPI_CR1_CSUSP BIT(10)
-#define SPI_CR1_HDDIR BIT(11)
-#define SPI_CR1_SSI BIT(12)
-
-/* STM32_SPI_CR2 bit fields */
-#define SPI_CR2_TSIZE_SHIFT 0
-#define SPI_CR2_TSIZE GENMASK(15, 0)
-
-/* STM32_SPI_CFG1 bit fields */
-#define SPI_CFG1_DSIZE_SHIFT 0
-#define SPI_CFG1_DSIZE GENMASK(4, 0)
-#define SPI_CFG1_FTHLV_SHIFT 5
-#define SPI_CFG1_FTHLV GENMASK(8, 5)
-#define SPI_CFG1_RXDMAEN BIT(14)
-#define SPI_CFG1_TXDMAEN BIT(15)
-#define SPI_CFG1_MBR_SHIFT 28
-#define SPI_CFG1_MBR GENMASK(30, 28)
-#define SPI_CFG1_MBR_MIN 0
-#define SPI_CFG1_MBR_MAX (GENMASK(30, 28) >> 28)
-
-/* STM32_SPI_CFG2 bit fields */
-#define SPI_CFG2_MIDI_SHIFT 4
-#define SPI_CFG2_MIDI GENMASK(7, 4)
-#define SPI_CFG2_COMM_SHIFT 17
-#define SPI_CFG2_COMM GENMASK(18, 17)
-#define SPI_CFG2_SP_SHIFT 19
-#define SPI_CFG2_SP GENMASK(21, 19)
-#define SPI_CFG2_MASTER BIT(22)
-#define SPI_CFG2_LSBFRST BIT(23)
-#define SPI_CFG2_CPHA BIT(24)
-#define SPI_CFG2_CPOL BIT(25)
-#define SPI_CFG2_SSM BIT(26)
-#define SPI_CFG2_AFCNTR BIT(31)
-
-/* STM32_SPI_IER bit fields */
-#define SPI_IER_RXPIE BIT(0)
-#define SPI_IER_TXPIE BIT(1)
-#define SPI_IER_DXPIE BIT(2)
-#define SPI_IER_EOTIE BIT(3)
-#define SPI_IER_TXTFIE BIT(4)
-#define SPI_IER_OVRIE BIT(6)
-#define SPI_IER_MODFIE BIT(9)
-#define SPI_IER_ALL GENMASK(10, 0)
-
-/* STM32_SPI_SR bit fields */
-#define SPI_SR_RXP BIT(0)
-#define SPI_SR_TXP BIT(1)
-#define SPI_SR_EOT BIT(3)
-#define SPI_SR_OVR BIT(6)
-#define SPI_SR_MODF BIT(9)
-#define SPI_SR_SUSP BIT(11)
-#define SPI_SR_RXPLVL_SHIFT 13
-#define SPI_SR_RXPLVL GENMASK(14, 13)
-#define SPI_SR_RXWNE BIT(15)
-
-/* STM32_SPI_IFCR bit fields */
-#define SPI_IFCR_ALL GENMASK(11, 3)
-
-/* STM32_SPI_I2SCFGR bit fields */
-#define SPI_I2SCFGR_I2SMOD BIT(0)
-
-/* SPI Master Baud Rate min/max divisor */
-#define SPI_MBR_DIV_MIN (2 << SPI_CFG1_MBR_MIN)
-#define SPI_MBR_DIV_MAX (2 << SPI_CFG1_MBR_MAX)
+/* STM32H7 SPI registers */
+#define STM32H7_SPI_CR1 0x00
+#define STM32H7_SPI_CR2 0x04
+#define STM32H7_SPI_CFG1 0x08
+#define STM32H7_SPI_CFG2 0x0C
+#define STM32H7_SPI_IER 0x10
+#define STM32H7_SPI_SR 0x14
+#define STM32H7_SPI_IFCR 0x18
+#define STM32H7_SPI_TXDR 0x20
+#define STM32H7_SPI_RXDR 0x30
+#define STM32H7_SPI_I2SCFGR 0x50
+
+/* STM32H7_SPI_CR1 bit fields */
+#define STM32H7_SPI_CR1_SPE BIT(0)
+#define STM32H7_SPI_CR1_MASRX BIT(8)
+#define STM32H7_SPI_CR1_CSTART BIT(9)
+#define STM32H7_SPI_CR1_CSUSP BIT(10)
+#define STM32H7_SPI_CR1_HDDIR BIT(11)
+#define STM32H7_SPI_CR1_SSI BIT(12)
+
+/* STM32H7_SPI_CR2 bit fields */
+#define STM32H7_SPI_CR2_TSIZE_SHIFT 0
+#define STM32H7_SPI_CR2_TSIZE GENMASK(15, 0)
+
+/* STM32H7_SPI_CFG1 bit fields */
+#define STM32H7_SPI_CFG1_DSIZE_SHIFT 0
+#define STM32H7_SPI_CFG1_DSIZE GENMASK(4, 0)
+#define STM32H7_SPI_CFG1_FTHLV_SHIFT 5
+#define STM32H7_SPI_CFG1_FTHLV GENMASK(8, 5)
+#define STM32H7_SPI_CFG1_RXDMAEN BIT(14)
+#define STM32H7_SPI_CFG1_TXDMAEN BIT(15)
+#define STM32H7_SPI_CFG1_MBR_SHIFT 28
+#define STM32H7_SPI_CFG1_MBR GENMASK(30, 28)
+#define STM32H7_SPI_CFG1_MBR_MIN 0
+#define STM32H7_SPI_CFG1_MBR_MAX (GENMASK(30, 28) >> 28)
+
+/* STM32H7_SPI_CFG2 bit fields */
+#define STM32H7_SPI_CFG2_MIDI_SHIFT 4
+#define STM32H7_SPI_CFG2_MIDI GENMASK(7, 4)
+#define STM32H7_SPI_CFG2_COMM_SHIFT 17
+#define STM32H7_SPI_CFG2_COMM GENMASK(18, 17)
+#define STM32H7_SPI_CFG2_SP_SHIFT 19
+#define STM32H7_SPI_CFG2_SP GENMASK(21, 19)
+#define STM32H7_SPI_CFG2_MASTER BIT(22)
+#define STM32H7_SPI_CFG2_LSBFRST BIT(23)
+#define STM32H7_SPI_CFG2_CPHA BIT(24)
+#define STM32H7_SPI_CFG2_CPOL BIT(25)
+#define STM32H7_SPI_CFG2_SSM BIT(26)
+#define STM32H7_SPI_CFG2_AFCNTR BIT(31)
+
+/* STM32H7_SPI_IER bit fields */
+#define STM32H7_SPI_IER_RXPIE BIT(0)
+#define STM32H7_SPI_IER_TXPIE BIT(1)
+#define STM32H7_SPI_IER_DXPIE BIT(2)
+#define STM32H7_SPI_IER_EOTIE BIT(3)
+#define STM32H7_SPI_IER_TXTFIE BIT(4)
+#define STM32H7_SPI_IER_OVRIE BIT(6)
+#define STM32H7_SPI_IER_MODFIE BIT(9)
+#define STM32H7_SPI_IER_ALL GENMASK(10, 0)
+
+/* STM32H7_SPI_SR bit fields */
+#define STM32H7_SPI_SR_RXP BIT(0)
+#define STM32H7_SPI_SR_TXP BIT(1)
+#define STM32H7_SPI_SR_EOT BIT(3)
+#define STM32H7_SPI_SR_OVR BIT(6)
+#define STM32H7_SPI_SR_MODF BIT(9)
+#define STM32H7_SPI_SR_SUSP BIT(11)
+#define STM32H7_SPI_SR_RXPLVL_SHIFT 13
+#define STM32H7_SPI_SR_RXPLVL GENMASK(14, 13)
+#define STM32H7_SPI_SR_RXWNE BIT(15)
+
+/* STM32H7_SPI_IFCR bit fields */
+#define STM32H7_SPI_IFCR_ALL GENMASK(11, 3)
+
+/* STM32H7_SPI_I2SCFGR bit fields */
+#define STM32H7_SPI_I2SCFGR_I2SMOD BIT(0)
+
+/* STM32H7 SPI Master Baud Rate min/max divisor */
+#define STM32H7_SPI_MBR_DIV_MIN (2 << STM32H7_SPI_CFG1_MBR_MIN)
+#define STM32H7_SPI_MBR_DIV_MAX (2 << STM32H7_SPI_CFG1_MBR_MAX)

/* SPI Communication mode */
#define SPI_FULL_DUPLEX 0
@@ -188,12 +188,12 @@ static int stm32_spi_get_fifo_size(struct stm32_spi *spi)

spin_lock_irqsave(&spi->lock, flags);

- stm32_spi_set_bits(spi, STM32_SPI_CR1, SPI_CR1_SPE);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CR1, STM32H7_SPI_CR1_SPE);

- while (readl_relaxed(spi->base + STM32_SPI_SR) & SPI_SR_TXP)
- writeb_relaxed(++count, spi->base + STM32_SPI_TXDR);
+ while (readl_relaxed(spi->base + STM32H7_SPI_SR) & STM32H7_SPI_SR_TXP)
+ writeb_relaxed(++count, spi->base + STM32H7_SPI_TXDR);

- stm32_spi_clr_bits(spi, STM32_SPI_CR1, SPI_CR1_SPE);
+ stm32_spi_clr_bits(spi, STM32H7_SPI_CR1, STM32H7_SPI_CR1_SPE);

spin_unlock_irqrestore(&spi->lock, flags);

@@ -217,10 +217,11 @@ static int stm32_spi_get_bpw_mask(struct stm32_spi *spi)
* The most significant bit at DSIZE bit field is reserved when the
* maximum data size of periperal instances is limited to 16-bit
*/
- stm32_spi_set_bits(spi, STM32_SPI_CFG1, SPI_CFG1_DSIZE);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CFG1, STM32H7_SPI_CFG1_DSIZE);

- cfg1 = readl_relaxed(spi->base + STM32_SPI_CFG1);
- max_bpw = (cfg1 & SPI_CFG1_DSIZE) >> SPI_CFG1_DSIZE_SHIFT;
+ cfg1 = readl_relaxed(spi->base + STM32H7_SPI_CFG1);
+ max_bpw = (cfg1 & STM32H7_SPI_CFG1_DSIZE) >>
+ STM32H7_SPI_CFG1_DSIZE_SHIFT;
max_bpw += 1;

spin_unlock_irqrestore(&spi->lock, flags);
@@ -250,8 +251,8 @@ static int stm32_spi_prepare_mbr(struct stm32_spi *spi, u32 speed_hz)
* no need to check it there.
* However, we need to ensure the following calculations.
*/
- if (div < SPI_MBR_DIV_MIN ||
- div > SPI_MBR_DIV_MAX)
+ if (div < STM32H7_SPI_MBR_DIV_MIN ||
+ div > STM32H7_SPI_MBR_DIV_MAX)
return -EINVAL;

/* Determine the first power of 2 greater than or equal to div */
@@ -302,23 +303,24 @@ static u32 stm32_spi_prepare_fthlv(struct stm32_spi *spi)
static void stm32_spi_write_txfifo(struct stm32_spi *spi)
{
while ((spi->tx_len > 0) &&
- (readl_relaxed(spi->base + STM32_SPI_SR) & SPI_SR_TXP)) {
+ (readl_relaxed(spi->base + STM32H7_SPI_SR) &
+ STM32H7_SPI_SR_TXP)) {
u32 offs = spi->cur_xferlen - spi->tx_len;

if (spi->tx_len >= sizeof(u32)) {
const u32 *tx_buf32 = (const u32 *)(spi->tx_buf + offs);

- writel_relaxed(*tx_buf32, spi->base + STM32_SPI_TXDR);
+ writel_relaxed(*tx_buf32, spi->base + STM32H7_SPI_TXDR);
spi->tx_len -= sizeof(u32);
} else if (spi->tx_len >= sizeof(u16)) {
const u16 *tx_buf16 = (const u16 *)(spi->tx_buf + offs);

- writew_relaxed(*tx_buf16, spi->base + STM32_SPI_TXDR);
+ writew_relaxed(*tx_buf16, spi->base + STM32H7_SPI_TXDR);
spi->tx_len -= sizeof(u16);
} else {
const u8 *tx_buf8 = (const u8 *)(spi->tx_buf + offs);

- writeb_relaxed(*tx_buf8, spi->base + STM32_SPI_TXDR);
+ writeb_relaxed(*tx_buf8, spi->base + STM32H7_SPI_TXDR);
spi->tx_len -= sizeof(u8);
}
}
@@ -335,35 +337,37 @@ static void stm32_spi_write_txfifo(struct stm32_spi *spi)
*/
static void stm32_spi_read_rxfifo(struct stm32_spi *spi, bool flush)
{
- u32 sr = readl_relaxed(spi->base + STM32_SPI_SR);
- u32 rxplvl = (sr & SPI_SR_RXPLVL) >> SPI_SR_RXPLVL_SHIFT;
+ u32 sr = readl_relaxed(spi->base + STM32H7_SPI_SR);
+ u32 rxplvl = (sr & STM32H7_SPI_SR_RXPLVL) >>
+ STM32H7_SPI_SR_RXPLVL_SHIFT;

while ((spi->rx_len > 0) &&
- ((sr & SPI_SR_RXP) ||
- (flush && ((sr & SPI_SR_RXWNE) || (rxplvl > 0))))) {
+ ((sr & STM32H7_SPI_SR_RXP) ||
+ (flush && ((sr & STM32H7_SPI_SR_RXWNE) || (rxplvl > 0))))) {
u32 offs = spi->cur_xferlen - spi->rx_len;

if ((spi->rx_len >= sizeof(u32)) ||
- (flush && (sr & SPI_SR_RXWNE))) {
+ (flush && (sr & STM32H7_SPI_SR_RXWNE))) {
u32 *rx_buf32 = (u32 *)(spi->rx_buf + offs);

- *rx_buf32 = readl_relaxed(spi->base + STM32_SPI_RXDR);
+ *rx_buf32 = readl_relaxed(spi->base + STM32H7_SPI_RXDR);
spi->rx_len -= sizeof(u32);
} else if ((spi->rx_len >= sizeof(u16)) ||
(flush && (rxplvl >= 2 || spi->cur_bpw > 8))) {
u16 *rx_buf16 = (u16 *)(spi->rx_buf + offs);

- *rx_buf16 = readw_relaxed(spi->base + STM32_SPI_RXDR);
+ *rx_buf16 = readw_relaxed(spi->base + STM32H7_SPI_RXDR);
spi->rx_len -= sizeof(u16);
} else {
u8 *rx_buf8 = (u8 *)(spi->rx_buf + offs);

- *rx_buf8 = readb_relaxed(spi->base + STM32_SPI_RXDR);
+ *rx_buf8 = readb_relaxed(spi->base + STM32H7_SPI_RXDR);
spi->rx_len -= sizeof(u8);
}

- sr = readl_relaxed(spi->base + STM32_SPI_SR);
- rxplvl = (sr & SPI_SR_RXPLVL) >> SPI_SR_RXPLVL_SHIFT;
+ sr = readl_relaxed(spi->base + STM32H7_SPI_SR);
+ rxplvl = (sr & STM32H7_SPI_SR_RXPLVL) >>
+ STM32H7_SPI_SR_RXPLVL_SHIFT;
}

dev_dbg(spi->dev, "%s%s: %d bytes left\n", __func__,
@@ -381,7 +385,7 @@ static void stm32_spi_enable(struct stm32_spi *spi)
{
dev_dbg(spi->dev, "enable controller\n");

- stm32_spi_set_bits(spi, STM32_SPI_CR1, SPI_CR1_SPE);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CR1, STM32H7_SPI_CR1_SPE);
}

/**
@@ -401,23 +405,23 @@ static void stm32_spi_disable(struct stm32_spi *spi)

spin_lock_irqsave(&spi->lock, flags);

- cr1 = readl_relaxed(spi->base + STM32_SPI_CR1);
+ cr1 = readl_relaxed(spi->base + STM32H7_SPI_CR1);

- if (!(cr1 & SPI_CR1_SPE)) {
+ if (!(cr1 & STM32H7_SPI_CR1_SPE)) {
spin_unlock_irqrestore(&spi->lock, flags);
return;
}

/* Wait on EOT or suspend the flow */
- if (readl_relaxed_poll_timeout_atomic(spi->base + STM32_SPI_SR,
- sr, !(sr & SPI_SR_EOT),
+ if (readl_relaxed_poll_timeout_atomic(spi->base + STM32H7_SPI_SR,
+ sr, !(sr & STM32H7_SPI_SR_EOT),
10, 100000) < 0) {
- if (cr1 & SPI_CR1_CSTART) {
- writel_relaxed(cr1 | SPI_CR1_CSUSP,
- spi->base + STM32_SPI_CR1);
+ if (cr1 & STM32H7_SPI_CR1_CSTART) {
+ writel_relaxed(cr1 | STM32H7_SPI_CR1_CSUSP,
+ spi->base + STM32H7_SPI_CR1);
if (readl_relaxed_poll_timeout_atomic(
- spi->base + STM32_SPI_SR,
- sr, !(sr & SPI_SR_SUSP),
+ spi->base + STM32H7_SPI_SR,
+ sr, !(sr & STM32H7_SPI_SR_SUSP),
10, 100000) < 0)
dev_warn(spi->dev,
"Suspend request timeout\n");
@@ -432,14 +436,14 @@ static void stm32_spi_disable(struct stm32_spi *spi)
if (spi->cur_usedma && spi->dma_rx)
dmaengine_terminate_all(spi->dma_rx);

- stm32_spi_clr_bits(spi, STM32_SPI_CR1, SPI_CR1_SPE);
+ stm32_spi_clr_bits(spi, STM32H7_SPI_CR1, STM32H7_SPI_CR1_SPE);

- stm32_spi_clr_bits(spi, STM32_SPI_CFG1, SPI_CFG1_TXDMAEN |
- SPI_CFG1_RXDMAEN);
+ stm32_spi_clr_bits(spi, STM32H7_SPI_CFG1, STM32H7_SPI_CFG1_TXDMAEN |
+ STM32H7_SPI_CFG1_RXDMAEN);

/* Disable interrupts and clear status flags */
- writel_relaxed(0, spi->base + STM32_SPI_IER);
- writel_relaxed(SPI_IFCR_ALL, spi->base + STM32_SPI_IFCR);
+ writel_relaxed(0, spi->base + STM32H7_SPI_IER);
+ writel_relaxed(STM32H7_SPI_IFCR_ALL, spi->base + STM32H7_SPI_IFCR);

spin_unlock_irqrestore(&spi->lock, flags);
}
@@ -476,19 +480,19 @@ static irqreturn_t stm32_spi_irq(int irq, void *dev_id)

spin_lock_irqsave(&spi->lock, flags);

- sr = readl_relaxed(spi->base + STM32_SPI_SR);
- ier = readl_relaxed(spi->base + STM32_SPI_IER);
+ sr = readl_relaxed(spi->base + STM32H7_SPI_SR);
+ ier = readl_relaxed(spi->base + STM32H7_SPI_IER);

mask = ier;
/* EOTIE is triggered on EOT, SUSP and TXC events. */
- mask |= SPI_SR_SUSP;
+ mask |= STM32H7_SPI_SR_SUSP;
/*
* When TXTF is set, DXPIE and TXPIE are cleared. So in case of
* Full-Duplex, need to poll RXP event to know if there are remaining
* data, before disabling SPI.
*/
if (spi->rx_buf && !spi->cur_usedma)
- mask |= SPI_SR_RXP;
+ mask |= STM32H7_SPI_SR_RXP;

if (!(sr & mask)) {
dev_dbg(spi->dev, "spurious IT (sr=0x%08x, ier=0x%08x)\n",
@@ -497,7 +501,7 @@ static irqreturn_t stm32_spi_irq(int irq, void *dev_id)
return IRQ_NONE;
}

- if (sr & SPI_SR_SUSP) {
+ if (sr & STM32H7_SPI_SR_SUSP) {
dev_warn(spi->dev, "Communication suspended\n");
if (!spi->cur_usedma && (spi->rx_buf && (spi->rx_len > 0)))
stm32_spi_read_rxfifo(spi, false);
@@ -509,12 +513,12 @@ static irqreturn_t stm32_spi_irq(int irq, void *dev_id)
end = true;
}

- if (sr & SPI_SR_MODF) {
+ if (sr & STM32H7_SPI_SR_MODF) {
dev_warn(spi->dev, "Mode fault: transfer aborted\n");
end = true;
}

- if (sr & SPI_SR_OVR) {
+ if (sr & STM32H7_SPI_SR_OVR) {
dev_warn(spi->dev, "Overrun: received value discarded\n");
if (!spi->cur_usedma && (spi->rx_buf && (spi->rx_len > 0)))
stm32_spi_read_rxfifo(spi, false);
@@ -526,21 +530,21 @@ static irqreturn_t stm32_spi_irq(int irq, void *dev_id)
end = true;
}

- if (sr & SPI_SR_EOT) {
+ if (sr & STM32H7_SPI_SR_EOT) {
if (!spi->cur_usedma && (spi->rx_buf && (spi->rx_len > 0)))
stm32_spi_read_rxfifo(spi, true);
end = true;
}

- if (sr & SPI_SR_TXP)
+ if (sr & STM32H7_SPI_SR_TXP)
if (!spi->cur_usedma && (spi->tx_buf && (spi->tx_len > 0)))
stm32_spi_write_txfifo(spi);

- if (sr & SPI_SR_RXP)
+ if (sr & STM32H7_SPI_SR_RXP)
if (!spi->cur_usedma && (spi->rx_buf && (spi->rx_len > 0)))
stm32_spi_read_rxfifo(spi, false);

- writel_relaxed(mask, spi->base + STM32_SPI_IFCR);
+ writel_relaxed(mask, spi->base + STM32H7_SPI_IFCR);

spin_unlock_irqrestore(&spi->lock, flags);

@@ -593,19 +597,19 @@ static int stm32_spi_prepare_msg(struct spi_master *master,
dev_dbg(spi->dev, "%dns inter-data idleness\n", spi->cur_midi);

if (spi_dev->mode & SPI_CPOL)
- cfg2_setb |= SPI_CFG2_CPOL;
+ cfg2_setb |= STM32H7_SPI_CFG2_CPOL;
else
- cfg2_clrb |= SPI_CFG2_CPOL;
+ cfg2_clrb |= STM32H7_SPI_CFG2_CPOL;

if (spi_dev->mode & SPI_CPHA)
- cfg2_setb |= SPI_CFG2_CPHA;
+ cfg2_setb |= STM32H7_SPI_CFG2_CPHA;
else
- cfg2_clrb |= SPI_CFG2_CPHA;
+ cfg2_clrb |= STM32H7_SPI_CFG2_CPHA;

if (spi_dev->mode & SPI_LSB_FIRST)
- cfg2_setb |= SPI_CFG2_LSBFRST;
+ cfg2_setb |= STM32H7_SPI_CFG2_LSBFRST;
else
- cfg2_clrb |= SPI_CFG2_LSBFRST;
+ cfg2_clrb |= STM32H7_SPI_CFG2_LSBFRST;

dev_dbg(spi->dev, "cpol=%d cpha=%d lsb_first=%d cs_high=%d\n",
spi_dev->mode & SPI_CPOL,
@@ -617,9 +621,9 @@ static int stm32_spi_prepare_msg(struct spi_master *master,

if (cfg2_clrb || cfg2_setb)
writel_relaxed(
- (readl_relaxed(spi->base + STM32_SPI_CFG2) &
+ (readl_relaxed(spi->base + STM32H7_SPI_CFG2) &
~cfg2_clrb) | cfg2_setb,
- spi->base + STM32_SPI_CFG2);
+ spi->base + STM32H7_SPI_CFG2);

spin_unlock_irqrestore(&spi->lock, flags);

@@ -640,11 +644,11 @@ static void stm32_spi_dma_cb(void *data)

spin_lock_irqsave(&spi->lock, flags);

- sr = readl_relaxed(spi->base + STM32_SPI_SR);
+ sr = readl_relaxed(spi->base + STM32H7_SPI_SR);

spin_unlock_irqrestore(&spi->lock, flags);

- if (!(sr & SPI_SR_EOT))
+ if (!(sr & STM32H7_SPI_SR_EOT))
dev_warn(spi->dev, "DMA error (sr=0x%08x)\n", sr);

/* Now wait for EOT, or SUSP or OVR in case of error */
@@ -677,14 +681,14 @@ static void stm32_spi_dma_config(struct stm32_spi *spi,
memset(dma_conf, 0, sizeof(struct dma_slave_config));
dma_conf->direction = dir;
if (dma_conf->direction == DMA_DEV_TO_MEM) { /* RX */
- dma_conf->src_addr = spi->phys_addr + STM32_SPI_RXDR;
+ dma_conf->src_addr = spi->phys_addr + STM32H7_SPI_RXDR;
dma_conf->src_addr_width = buswidth;
dma_conf->src_maxburst = maxburst;

dev_dbg(spi->dev, "Rx DMA config buswidth=%d, maxburst=%d\n",
buswidth, maxburst);
} else if (dma_conf->direction == DMA_MEM_TO_DEV) { /* TX */
- dma_conf->dst_addr = spi->phys_addr + STM32_SPI_TXDR;
+ dma_conf->dst_addr = spi->phys_addr + STM32H7_SPI_TXDR;
dma_conf->dst_addr_width = buswidth;
dma_conf->dst_maxburst = maxburst;

@@ -707,14 +711,15 @@ static int stm32_spi_transfer_one_irq(struct stm32_spi *spi)

/* Enable the interrupts relative to the current communication mode */
if (spi->tx_buf && spi->rx_buf) /* Full Duplex */
- ier |= SPI_IER_DXPIE;
+ ier |= STM32H7_SPI_IER_DXPIE;
else if (spi->tx_buf) /* Half-Duplex TX dir or Simplex TX */
- ier |= SPI_IER_TXPIE;
+ ier |= STM32H7_SPI_IER_TXPIE;
else if (spi->rx_buf) /* Half-Duplex RX dir or Simplex RX */
- ier |= SPI_IER_RXPIE;
+ ier |= STM32H7_SPI_IER_RXPIE;

/* Enable the interrupts relative to the end of transfer */
- ier |= SPI_IER_EOTIE | SPI_IER_TXTFIE | SPI_IER_OVRIE | SPI_IER_MODFIE;
+ ier |= STM32H7_SPI_IER_EOTIE | STM32H7_SPI_IER_TXTFIE |
+ STM32H7_SPI_IER_OVRIE | STM32H7_SPI_IER_MODFIE;

spin_lock_irqsave(&spi->lock, flags);

@@ -724,9 +729,9 @@ static int stm32_spi_transfer_one_irq(struct stm32_spi *spi)
if (spi->tx_buf)
stm32_spi_write_txfifo(spi);

- stm32_spi_set_bits(spi, STM32_SPI_CR1, SPI_CR1_CSTART);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CR1, STM32H7_SPI_CR1_CSTART);

- writel_relaxed(ier, spi->base + STM32_SPI_IER);
+ writel_relaxed(ier, spi->base + STM32H7_SPI_IER);

spin_unlock_irqrestore(&spi->lock, flags);

@@ -755,7 +760,8 @@ static int stm32_spi_transfer_one_dma(struct stm32_spi *spi,
dmaengine_slave_config(spi->dma_rx, &rx_dma_conf);

/* Enable Rx DMA request */
- stm32_spi_set_bits(spi, STM32_SPI_CFG1, SPI_CFG1_RXDMAEN);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CFG1,
+ STM32H7_SPI_CFG1_RXDMAEN);

rx_dma_desc = dmaengine_prep_slave_sg(
spi->dma_rx, xfer->rx_sg.sgl,
@@ -809,16 +815,18 @@ static int stm32_spi_transfer_one_dma(struct stm32_spi *spi,
dma_async_issue_pending(spi->dma_tx);

/* Enable Tx DMA request */
- stm32_spi_set_bits(spi, STM32_SPI_CFG1, SPI_CFG1_TXDMAEN);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CFG1,
+ STM32H7_SPI_CFG1_TXDMAEN);
}

/* Enable the interrupts relative to the end of transfer */
- ier |= SPI_IER_EOTIE | SPI_IER_TXTFIE | SPI_IER_OVRIE | SPI_IER_MODFIE;
- writel_relaxed(ier, spi->base + STM32_SPI_IER);
+ ier |= STM32H7_SPI_IER_EOTIE | STM32H7_SPI_IER_TXTFIE |
+ STM32H7_SPI_IER_OVRIE | STM32H7_SPI_IER_MODFIE;
+ writel_relaxed(ier, spi->base + STM32H7_SPI_IER);

stm32_spi_enable(spi);

- stm32_spi_set_bits(spi, STM32_SPI_CR1, SPI_CR1_CSTART);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CR1, STM32H7_SPI_CR1_CSTART);

spin_unlock_irqrestore(&spi->lock, flags);

@@ -829,7 +837,7 @@ static int stm32_spi_transfer_one_dma(struct stm32_spi *spi,
dmaengine_terminate_all(spi->dma_rx);

dma_desc_error:
- stm32_spi_clr_bits(spi, STM32_SPI_CFG1, SPI_CFG1_RXDMAEN);
+ stm32_spi_clr_bits(spi, STM32H7_SPI_CFG1, STM32H7_SPI_CFG1_RXDMAEN);

spin_unlock_irqrestore(&spi->lock, flags);

@@ -861,14 +869,16 @@ static int stm32_spi_transfer_one_setup(struct stm32_spi *spi,
spi->cur_bpw = transfer->bits_per_word;
bpw = spi->cur_bpw - 1;

- cfg1_clrb |= SPI_CFG1_DSIZE;
- cfg1_setb |= (bpw << SPI_CFG1_DSIZE_SHIFT) & SPI_CFG1_DSIZE;
+ cfg1_clrb |= STM32H7_SPI_CFG1_DSIZE;
+ cfg1_setb |= (bpw << STM32H7_SPI_CFG1_DSIZE_SHIFT) &
+ STM32H7_SPI_CFG1_DSIZE;

spi->cur_fthlv = stm32_spi_prepare_fthlv(spi);
fthlv = spi->cur_fthlv - 1;

- cfg1_clrb |= SPI_CFG1_FTHLV;
- cfg1_setb |= (fthlv << SPI_CFG1_FTHLV_SHIFT) & SPI_CFG1_FTHLV;
+ cfg1_clrb |= STM32H7_SPI_CFG1_FTHLV;
+ cfg1_setb |= (fthlv << STM32H7_SPI_CFG1_FTHLV_SHIFT) &
+ STM32H7_SPI_CFG1_FTHLV;
}

if (spi->cur_speed != transfer->speed_hz) {
@@ -883,14 +893,15 @@ static int stm32_spi_transfer_one_setup(struct stm32_spi *spi,

transfer->speed_hz = spi->cur_speed;

- cfg1_clrb |= SPI_CFG1_MBR;
- cfg1_setb |= ((u32)mbr << SPI_CFG1_MBR_SHIFT) & SPI_CFG1_MBR;
+ cfg1_clrb |= STM32H7_SPI_CFG1_MBR;
+ cfg1_setb |= ((u32)mbr << STM32H7_SPI_CFG1_MBR_SHIFT) &
+ STM32H7_SPI_CFG1_MBR;
}

if (cfg1_clrb || cfg1_setb)
- writel_relaxed((readl_relaxed(spi->base + STM32_SPI_CFG1) &
+ writel_relaxed((readl_relaxed(spi->base + STM32H7_SPI_CFG1) &
~cfg1_clrb) | cfg1_setb,
- spi->base + STM32_SPI_CFG1);
+ spi->base + STM32H7_SPI_CFG1);

mode = SPI_FULL_DUPLEX;
if (spi_dev->mode & SPI_3WIRE) { /* MISO/MOSI signals shared */
@@ -902,9 +913,11 @@ static int stm32_spi_transfer_one_setup(struct stm32_spi *spi,
*/
mode = SPI_HALF_DUPLEX;
if (!transfer->tx_buf)
- stm32_spi_clr_bits(spi, STM32_SPI_CR1, SPI_CR1_HDDIR);
+ stm32_spi_clr_bits(spi, STM32H7_SPI_CR1,
+ STM32H7_SPI_CR1_HDDIR);
else if (!transfer->rx_buf)
- stm32_spi_set_bits(spi, STM32_SPI_CR1, SPI_CR1_HDDIR);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CR1,
+ STM32H7_SPI_CR1_HDDIR);
} else {
if (!transfer->tx_buf)
mode = SPI_SIMPLEX_RX;
@@ -914,26 +927,29 @@ static int stm32_spi_transfer_one_setup(struct stm32_spi *spi,
if (spi->cur_comm != mode) {
spi->cur_comm = mode;

- cfg2_clrb |= SPI_CFG2_COMM;
- cfg2_setb |= (mode << SPI_CFG2_COMM_SHIFT) & SPI_CFG2_COMM;
+ cfg2_clrb |= STM32H7_SPI_CFG2_COMM;
+ cfg2_setb |= (mode << STM32H7_SPI_CFG2_COMM_SHIFT) &
+ STM32H7_SPI_CFG2_COMM;
}

- cfg2_clrb |= SPI_CFG2_MIDI;
+ cfg2_clrb |= STM32H7_SPI_CFG2_MIDI;
if ((transfer->len > 1) && (spi->cur_midi > 0)) {
u32 sck_period_ns = DIV_ROUND_UP(SPI_1HZ_NS, spi->cur_speed);
u32 midi = min((u32)DIV_ROUND_UP(spi->cur_midi, sck_period_ns),
- (u32)SPI_CFG2_MIDI >> SPI_CFG2_MIDI_SHIFT);
+ (u32)STM32H7_SPI_CFG2_MIDI >>
+ STM32H7_SPI_CFG2_MIDI_SHIFT);

dev_dbg(spi->dev, "period=%dns, midi=%d(=%dns)\n",
sck_period_ns, midi, midi * sck_period_ns);

- cfg2_setb |= (midi << SPI_CFG2_MIDI_SHIFT) & SPI_CFG2_MIDI;
+ cfg2_setb |= (midi << STM32H7_SPI_CFG2_MIDI_SHIFT) &
+ STM32H7_SPI_CFG2_MIDI;
}

if (cfg2_clrb || cfg2_setb)
- writel_relaxed((readl_relaxed(spi->base + STM32_SPI_CFG2) &
+ writel_relaxed((readl_relaxed(spi->base + STM32H7_SPI_CFG2) &
~cfg2_clrb) | cfg2_setb,
- spi->base + STM32_SPI_CFG2);
+ spi->base + STM32H7_SPI_CFG2);

if (spi->cur_bpw <= 8)
nb_words = transfer->len;
@@ -941,10 +957,10 @@ static int stm32_spi_transfer_one_setup(struct stm32_spi *spi,
nb_words = DIV_ROUND_UP(transfer->len * 8, 16);
else
nb_words = DIV_ROUND_UP(transfer->len * 8, 32);
- nb_words <<= SPI_CR2_TSIZE_SHIFT;
+ nb_words <<= STM32H7_SPI_CR2_TSIZE_SHIFT;

- if (nb_words <= SPI_CR2_TSIZE) {
- writel_relaxed(nb_words, spi->base + STM32_SPI_CR2);
+ if (nb_words <= STM32H7_SPI_CR2_TSIZE) {
+ writel_relaxed(nb_words, spi->base + STM32H7_SPI_CR2);
} else {
ret = -EMSGSIZE;
goto out;
@@ -1030,16 +1046,17 @@ static int stm32_spi_config(struct stm32_spi *spi)
spin_lock_irqsave(&spi->lock, flags);

/* Ensure I2SMOD bit is kept cleared */
- stm32_spi_clr_bits(spi, STM32_SPI_I2SCFGR, SPI_I2SCFGR_I2SMOD);
+ stm32_spi_clr_bits(spi, STM32H7_SPI_I2SCFGR,
+ STM32H7_SPI_I2SCFGR_I2SMOD);

/*
* - SS input value high
* - transmitter half duplex direction
* - automatic communication suspend when RX-Fifo is full
*/
- stm32_spi_set_bits(spi, STM32_SPI_CR1, SPI_CR1_SSI |
- SPI_CR1_HDDIR |
- SPI_CR1_MASRX);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CR1, STM32H7_SPI_CR1_SSI |
+ STM32H7_SPI_CR1_HDDIR |
+ STM32H7_SPI_CR1_MASRX);

/*
* - Set the master mode (default Motorola mode)
@@ -1047,9 +1064,9 @@ static int stm32_spi_config(struct stm32_spi *spi)
* SS input value is determined by the SSI bit
* - keep control of all associated GPIOs
*/
- stm32_spi_set_bits(spi, STM32_SPI_CFG2, SPI_CFG2_MASTER |
- SPI_CFG2_SSM |
- SPI_CFG2_AFCNTR);
+ stm32_spi_set_bits(spi, STM32H7_SPI_CFG2, STM32H7_SPI_CFG2_MASTER |
+ STM32H7_SPI_CFG2_SSM |
+ STM32H7_SPI_CFG2_AFCNTR);

spin_unlock_irqrestore(&spi->lock, flags);

@@ -1145,8 +1162,8 @@ static int stm32_spi_probe(struct platform_device *pdev)
master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_CS_HIGH | SPI_LSB_FIRST |
SPI_3WIRE;
master->bits_per_word_mask = stm32_spi_get_bpw_mask(spi);
- master->max_speed_hz = spi->clk_rate / SPI_MBR_DIV_MIN;
- master->min_speed_hz = spi->clk_rate / SPI_MBR_DIV_MAX;
+ master->max_speed_hz = spi->clk_rate / STM32H7_SPI_MBR_DIV_MIN;
+ master->min_speed_hz = spi->clk_rate / STM32H7_SPI_MBR_DIV_MAX;
master->setup = stm32_spi_setup;
master->prepare_message = stm32_spi_prepare_msg;
master->transfer_one = stm32_spi_transfer_one;
--
2.7.4
\
 
 \ /
  Last update: 2018-12-24 23:02    [W:0.083 / U:18.992 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site