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Merge remote-tracking branches 'spi/topic/dw', 'spi/topic/flash-read', 'spi/topic/fsl-dspi', 'spi/topic/fsl-espi' and 'spi/topic/kconfig' into spi-next

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This commit is contained in:
Mark Brown
2016-05-23 12:16:48 +01:00
parent 4b744afa7d 3208a1ccb2 7ba2f2757d c145344763 6319a68011 46cb41534a
commit c36581c9a5
6 changed files with 39 additions and 11 deletions
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2
drivers/spi/Kconfig
View File

@@ -410,7 +410,6 @@ config SPI_OMAP_UWIRE
config SPI_OMAP24XX
tristate "McSPI driver for OMAP"
depends on HAS_DMA
depends on ARM || ARM64 || AVR32 || HEXAGON || MIPS || SUPERH
depends on ARCH_OMAP2PLUS || COMPILE_TEST
help
SPI master controller for OMAP24XX and later Multichannel SPI
@@ -469,7 +468,6 @@ config SPI_PXA2XX_PCI
config SPI_ROCKCHIP
tristate "Rockchip SPI controller driver"
depends on ARM || ARM64 || AVR32 || HEXAGON || MIPS || SUPERH
help
This selects a driver for Rockchip SPI controller.

2
drivers/spi/spi-dw-pci.c
View File

@@ -67,7 +67,7 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
dws->irq = pdev->irq;
/*
* Specific handling for paltforms, like dma setup,
* Specific handling for platforms, like dma setup,
* clock rate, FIFO depth.
*/
if (desc) {

7
drivers/spi/spi-fsl-dspi.c
View File

@@ -121,18 +121,22 @@ enum dspi_trans_mode {
struct fsl_dspi_devtype_data {
enum dspi_trans_mode trans_mode;
u8 max_clock_factor;
};
static const struct fsl_dspi_devtype_data vf610_data = {
.trans_mode = DSPI_EOQ_MODE,
.max_clock_factor = 2,
};
static const struct fsl_dspi_devtype_data ls1021a_v1_data = {
.trans_mode = DSPI_TCFQ_MODE,
.max_clock_factor = 8,
};
static const struct fsl_dspi_devtype_data ls2085a_data = {
.trans_mode = DSPI_TCFQ_MODE,
.max_clock_factor = 8,
};
struct fsl_dspi {
@@ -726,6 +730,9 @@ static int dspi_probe(struct platform_device *pdev)
}
clk_prepare_enable(dspi->clk);
master->max_speed_hz =
clk_get_rate(dspi->clk) / dspi->devtype_data->max_clock_factor;
init_waitqueue_head(&dspi->waitq);
platform_set_drvdata(pdev, master);

30
drivers/spi/spi-fsl-espi.c
View File

@@ -245,7 +245,12 @@ static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t)
if (ret)
return ret;
wait_for_completion(&mpc8xxx_spi->done);
/* Won't hang up forever, SPI bus sometimes got lost interrupts... */
ret = wait_for_completion_timeout(&mpc8xxx_spi->done, 2 * HZ);
if (ret == 0)
dev_err(mpc8xxx_spi->dev,
"Transaction hanging up (left %d bytes)\n",
mpc8xxx_spi->count);
/* disable rx ints */
mpc8xxx_spi_write_reg(&reg_base->mask, 0);
@@ -539,16 +544,31 @@ void fsl_espi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events)
if (events & SPIE_NE) {
u32 rx_data, tmp;
u8 rx_data_8;
int rx_nr_bytes = 4;
int ret;
/* Spin until RX is done */
while (SPIE_RXCNT(events) < min(4, mspi->len)) {
cpu_relax();
events = mpc8xxx_spi_read_reg(&reg_base->event);
if (SPIE_RXCNT(events) < min(4, mspi->len)) {
ret = spin_event_timeout(
!(SPIE_RXCNT(events =
mpc8xxx_spi_read_reg(&reg_base->event)) <
min(4, mspi->len)),
10000, 0); /* 10 msec */
if (!ret)
dev_err(mspi->dev,
"tired waiting for SPIE_RXCNT\n");
}
if (mspi->len >= 4) {
rx_data = mpc8xxx_spi_read_reg(&reg_base->receive);
} else if (mspi->len <= 0) {
dev_err(mspi->dev,
"unexpected RX(SPIE_NE) interrupt occurred,\n"
"(local rxlen %d bytes, reg rxlen %d bytes)\n",
min(4, mspi->len), SPIE_RXCNT(events));
rx_nr_bytes = 0;
} else {
rx_nr_bytes = mspi->len;
tmp = mspi->len;
rx_data = 0;
while (tmp--) {
@@ -559,7 +579,7 @@ void fsl_espi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events)
rx_data <<= (4 - mspi->len) * 8;
}
mspi->len -= 4;
mspi->len -= rx_nr_bytes;
if (mspi->rx)
mspi->get_rx(rx_data, mspi);