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authorMark Brown <broonie@kernel.org>2020-03-27 16:53:00 +0100
committerMark Brown <broonie@kernel.org>2020-03-27 16:53:00 +0100
commit1ba0b52ea73bd46ff053edea21f5630f5277fefe (patch)
tree1a4e561a0e0238a54aff02aa47e20cfcd61522be /drivers/spi/spi.c
parentLinux 5.6-rc7 (diff)
parentspi: efm32: Convert to use GPIO descriptors (diff)
downloadlinux-1ba0b52ea73bd46ff053edea21f5630f5277fefe.tar.xz
linux-1ba0b52ea73bd46ff053edea21f5630f5277fefe.zip
Merge branch 'spi-5.7' into spi-next
Diffstat (limited to 'drivers/spi/spi.c')
-rw-r--r--drivers/spi/spi.c34
1 files changed, 13 insertions, 21 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 755221bc3745..c92c89467e7e 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -510,6 +510,7 @@ struct spi_device *spi_alloc_device(struct spi_controller *ctlr)
spi->dev.bus = &spi_bus_type;
spi->dev.release = spidev_release;
spi->cs_gpio = -ENOENT;
+ spi->mode = ctlr->buswidth_override_bits;
spin_lock_init(&spi->statistics.lock);
@@ -1514,17 +1515,15 @@ void spi_take_timestamp_pre(struct spi_controller *ctlr,
if (!xfer->ptp_sts)
return;
- if (xfer->timestamped_pre)
+ if (xfer->timestamped)
return;
- if (progress < xfer->ptp_sts_word_pre)
+ if (progress > xfer->ptp_sts_word_pre)
return;
/* Capture the resolution of the timestamp */
xfer->ptp_sts_word_pre = progress;
- xfer->timestamped_pre = true;
-
if (irqs_off) {
local_irq_save(ctlr->irq_flags);
preempt_disable();
@@ -1553,7 +1552,7 @@ void spi_take_timestamp_post(struct spi_controller *ctlr,
if (!xfer->ptp_sts)
return;
- if (xfer->timestamped_post)
+ if (xfer->timestamped)
return;
if (progress < xfer->ptp_sts_word_post)
@@ -1569,7 +1568,7 @@ void spi_take_timestamp_post(struct spi_controller *ctlr,
/* Capture the resolution of the timestamp */
xfer->ptp_sts_word_post = progress;
- xfer->timestamped_post = true;
+ xfer->timestamped = true;
}
EXPORT_SYMBOL_GPL(spi_take_timestamp_post);
@@ -1674,12 +1673,9 @@ void spi_finalize_current_message(struct spi_controller *ctlr)
}
}
- if (unlikely(ctlr->ptp_sts_supported)) {
- list_for_each_entry(xfer, &mesg->transfers, transfer_list) {
- WARN_ON_ONCE(xfer->ptp_sts && !xfer->timestamped_pre);
- WARN_ON_ONCE(xfer->ptp_sts && !xfer->timestamped_post);
- }
- }
+ if (unlikely(ctlr->ptp_sts_supported))
+ list_for_each_entry(xfer, &mesg->transfers, transfer_list)
+ WARN_ON_ONCE(xfer->ptp_sts && !xfer->timestamped);
spi_unmap_msg(ctlr, mesg);
@@ -1955,13 +1951,8 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi,
spi->mode |= SPI_CS_HIGH;
/* Device speed */
- rc = of_property_read_u32(nc, "spi-max-frequency", &value);
- if (rc) {
- dev_err(&ctlr->dev,
- "%pOF has no valid 'spi-max-frequency' property (%d)\n", nc, rc);
- return rc;
- }
- spi->max_speed_hz = value;
+ if (!of_property_read_u32(nc, "spi-max-frequency", &value))
+ spi->max_speed_hz = value;
return 0;
}
@@ -2181,9 +2172,10 @@ static acpi_status acpi_register_spi_device(struct spi_controller *ctlr,
return AE_NO_MEMORY;
}
+
ACPI_COMPANION_SET(&spi->dev, adev);
spi->max_speed_hz = lookup.max_speed_hz;
- spi->mode = lookup.mode;
+ spi->mode |= lookup.mode;
spi->irq = lookup.irq;
spi->bits_per_word = lookup.bits_per_word;
spi->chip_select = lookup.chip_select;
@@ -4034,7 +4026,7 @@ static struct spi_device *acpi_spi_find_device_by_adev(struct acpi_device *adev)
struct device *dev;
dev = bus_find_device_by_acpi_dev(&spi_bus_type, adev);
- return dev ? to_spi_device(dev) : NULL;
+ return to_spi_device(dev);
}
static int acpi_spi_notify(struct notifier_block *nb, unsigned long value,