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Message-ID: <20190913114550.956-11-alexandru.ardelean@analog.com>
Date: Fri, 13 Sep 2019 14:45:45 +0300
From: Alexandru Ardelean <alexandru.ardelean@...log.com>
To: <linux-spi@...r.kernel.org>, <linux-iio@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<bcm-kernel-feedback-list@...adcom.com>
CC: <jic23@...nel.org>, <broonie@...nel.org>, <f.fainelli@...il.com>,
<linus.walleij@...aro.org>, <orsonzhai@...il.com>,
<baolin.wang@...aro.org>, <zhang.lyra@...il.com>,
Alexandru Ardelean <alexandru.ardelean@...log.com>
Subject: [RFC PATCH 10/15] spi: use new `spi_transfer_delay` helper where straightforward
For many places in the spi drivers, using the new `spi_transfer_delay`
helper is straightforward.
It's just replacing:
```
if (t->delay_usecs)
udelay(t->delay_usecs);
```
with `spi_transfer_delay(t)` which handles both `delay_usecs` and the new
`delay` field.
This change replaces in all places (in the spi drivers) where this change
is simple.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
---
drivers/spi/spi-atmel.c | 3 +--
drivers/spi/spi-bcm63xx-hsspi.c | 3 +--
drivers/spi/spi-cavium.c | 3 +--
drivers/spi/spi-fsl-dspi.c | 3 +--
drivers/spi/spi-fsl-espi.c | 3 +--
drivers/spi/spi-fsl-spi.c | 3 +--
drivers/spi/spi-mpc512x-psc.c | 3 +--
drivers/spi/spi-mpc52xx-psc.c | 3 +--
drivers/spi/spi-omap-100k.c | 3 +--
drivers/spi/spi-pl022.c | 25 +++++++++++--------------
drivers/spi/spi-sc18is602.c | 3 +--
drivers/spi/spi-sh-hspi.c | 3 +--
drivers/spi/spi-tegra20-sflash.c | 2 +-
drivers/spi/spi-topcliff-pch.c | 7 +------
drivers/spi/spi-txx9.c | 3 +--
drivers/spi/spi-xcomm.c | 3 +--
16 files changed, 26 insertions(+), 47 deletions(-)
diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 009bb4fb5e5f..f51af930c7a4 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -1389,8 +1389,7 @@ static int atmel_spi_one_transfer(struct spi_master *master,
&& as->use_pdc)
atmel_spi_dma_unmap_xfer(master, xfer);
- if (xfer->delay_usecs)
- udelay(xfer->delay_usecs);
+ spi_transfer_delay(xfer);
if (xfer->cs_change) {
if (list_is_last(&xfer->transfer_list,
diff --git a/drivers/spi/spi-bcm63xx-hsspi.c b/drivers/spi/spi-bcm63xx-hsspi.c
index 9a06ffdb73b8..d9f5c241e2aa 100644
--- a/drivers/spi/spi-bcm63xx-hsspi.c
+++ b/drivers/spi/spi-bcm63xx-hsspi.c
@@ -291,8 +291,7 @@ static int bcm63xx_hsspi_transfer_one(struct spi_master *master,
msg->actual_length += t->len;
- if (t->delay_usecs)
- udelay(t->delay_usecs);
+ spi_transfer_delay(t);
if (t->cs_change)
bcm63xx_hsspi_set_cs(bs, spi->chip_select, false);
diff --git a/drivers/spi/spi-cavium.c b/drivers/spi/spi-cavium.c
index 5aaf21582cb5..db7f5f94c525 100644
--- a/drivers/spi/spi-cavium.c
+++ b/drivers/spi/spi-cavium.c
@@ -119,8 +119,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
*rx_buf++ = (u8)v;
}
- if (xfer->delay_usecs)
- udelay(xfer->delay_usecs);
+ spi_transfer_delay(xfer);
return xfer->len;
}
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index 53335ccc98f6..0b761352c16a 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -752,8 +752,7 @@ static int dspi_transfer_one_message(struct spi_master *master,
dspi->waitflags = 0;
}
- if (transfer->delay_usecs)
- udelay(transfer->delay_usecs);
+ spi_transfer_delay(transfer);
}
out:
diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c
index f20326714b9d..a3af12127c40 100644
--- a/drivers/spi/spi-fsl-espi.c
+++ b/drivers/spi/spi-fsl-espi.c
@@ -427,8 +427,7 @@ static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans)
ret = fsl_espi_bufs(spi, trans);
- if (trans->delay_usecs)
- udelay(trans->delay_usecs);
+ spi_transfer_delay(trans);
return ret;
}
diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c
index 1d9b33aa1a3b..9352b127d5b8 100644
--- a/drivers/spi/spi-fsl-spi.c
+++ b/drivers/spi/spi-fsl-spi.c
@@ -417,8 +417,7 @@ static int fsl_spi_do_one_msg(struct spi_master *master,
}
m->actual_length += t->len;
- if (t->delay_usecs)
- udelay(t->delay_usecs);
+ spi_transfer_delay(t);
if (cs_change) {
ndelay(nsecs);
diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c
index a337b842ae8c..329bbdd1f15f 100644
--- a/drivers/spi/spi-mpc512x-psc.c
+++ b/drivers/spi/spi-mpc512x-psc.c
@@ -311,8 +311,7 @@ static int mpc512x_psc_spi_msg_xfer(struct spi_master *master,
break;
m->actual_length += t->len;
- if (t->delay_usecs)
- udelay(t->delay_usecs);
+ spi_transfer_delay(t);
if (cs_change)
mpc512x_psc_spi_deactivate_cs(spi);
diff --git a/drivers/spi/spi-mpc52xx-psc.c b/drivers/spi/spi-mpc52xx-psc.c
index c7e478b9b586..dd79d7fd3687 100644
--- a/drivers/spi/spi-mpc52xx-psc.c
+++ b/drivers/spi/spi-mpc52xx-psc.c
@@ -234,8 +234,7 @@ static void mpc52xx_psc_spi_work(struct work_struct *work)
break;
m->actual_length += t->len;
- if (t->delay_usecs)
- udelay(t->delay_usecs);
+ spi_transfer_delay(t);
if (cs_change)
mpc52xx_psc_spi_deactivate_cs(spi);
diff --git a/drivers/spi/spi-omap-100k.c b/drivers/spi/spi-omap-100k.c
index b955ca8796d2..eb5b51bd5126 100644
--- a/drivers/spi/spi-omap-100k.c
+++ b/drivers/spi/spi-omap-100k.c
@@ -321,8 +321,7 @@ static int omap1_spi100k_transfer_one_message(struct spi_master *master,
}
}
- if (t->delay_usecs)
- udelay(t->delay_usecs);
+ spi_transfer_delay(t);
/* ignore the "leave it on after last xfer" hint */
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index 7fedea67159c..42cf800073e4 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -485,12 +485,11 @@ static void giveback(struct pl022 *pl022)
struct spi_transfer, transfer_list);
/* Delay if requested before any change in chip select */
- if (last_transfer->delay_usecs)
- /*
- * FIXME: This runs in interrupt context.
- * Is this really smart?
- */
- udelay(last_transfer->delay_usecs);
+ /*
+ * FIXME: This runs in interrupt context.
+ * Is this really smart?
+ */
+ spi_transfer_delay(last_transfer);
if (!last_transfer->cs_change) {
struct spi_message *next_msg;
@@ -1401,12 +1400,11 @@ static void pump_transfers(unsigned long data)
previous = list_entry(transfer->transfer_list.prev,
struct spi_transfer,
transfer_list);
- if (previous->delay_usecs)
- /*
- * FIXME: This runs in interrupt context.
- * Is this really smart?
- */
- udelay(previous->delay_usecs);
+ /*
+ * FIXME: This runs in interrupt context.
+ * Is this really smart?
+ */
+ spi_transfer_delay(previous);
/* Reselect chip select only if cs_change was requested */
if (previous->cs_change)
@@ -1520,8 +1518,7 @@ static void do_polling_transfer(struct pl022 *pl022)
previous =
list_entry(transfer->transfer_list.prev,
struct spi_transfer, transfer_list);
- if (previous->delay_usecs)
- udelay(previous->delay_usecs);
+ spi_transfer_delay(previous);
if (previous->cs_change)
pl022_cs_control(pl022, SSP_CHIP_SELECT);
} else {
diff --git a/drivers/spi/spi-sc18is602.c b/drivers/spi/spi-sc18is602.c
index 11acddc83304..13cb992df712 100644
--- a/drivers/spi/spi-sc18is602.c
+++ b/drivers/spi/spi-sc18is602.c
@@ -211,8 +211,7 @@ static int sc18is602_transfer_one(struct spi_master *master,
}
status = 0;
- if (t->delay_usecs)
- udelay(t->delay_usecs);
+ spi_transfer_delay(t);
}
m->status = status;
spi_finalize_current_message(master);
diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c
index 7f73f91d412a..4edad22c222e 100644
--- a/drivers/spi/spi-sh-hspi.c
+++ b/drivers/spi/spi-sh-hspi.c
@@ -190,8 +190,7 @@ static int hspi_transfer_one_message(struct spi_controller *ctlr,
msg->actual_length += t->len;
- if (t->delay_usecs)
- udelay(t->delay_usecs);
+ spi_transfer_delay(t);
if (cs_change) {
ndelay(nsecs);
diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c
index cd714a4f52c6..00593096cfed 100644
--- a/drivers/spi/spi-tegra20-sflash.c
+++ b/drivers/spi/spi-tegra20-sflash.c
@@ -344,7 +344,7 @@ static int tegra_sflash_transfer_one_message(struct spi_master *master,
if (xfer->cs_change && xfer->delay_usecs) {
tegra_sflash_writel(tsd, tsd->def_command_reg,
SPI_COMMAND);
- udelay(xfer->delay_usecs);
+ spi_transfer_delay(xfer);
}
}
ret = 0;
diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c
index f88cbb94ce12..645b086eece8 100644
--- a/drivers/spi/spi-topcliff-pch.c
+++ b/drivers/spi/spi-topcliff-pch.c
@@ -1229,12 +1229,7 @@ static void pch_spi_process_messages(struct work_struct *pwork)
"%s:data->current_msg->actual_length=%d\n",
__func__, data->current_msg->actual_length);
- /* check for delay */
- if (data->cur_trans->delay_usecs) {
- dev_dbg(&data->master->dev, "%s:delay in usec=%d\n",
- __func__, data->cur_trans->delay_usecs);
- udelay(data->cur_trans->delay_usecs);
- }
+ spi_transfer_delay(data->cur_trans);
spin_lock(&data->lock);
diff --git a/drivers/spi/spi-txx9.c b/drivers/spi/spi-txx9.c
index 51759d3fd45f..65aa736783ae 100644
--- a/drivers/spi/spi-txx9.c
+++ b/drivers/spi/spi-txx9.c
@@ -248,8 +248,7 @@ static void txx9spi_work_one(struct txx9spi *c, struct spi_message *m)
len -= count * wsize;
}
m->actual_length += t->len;
- if (t->delay_usecs)
- udelay(t->delay_usecs);
+ spi_transfer_delay(t);
if (!cs_change)
continue;
diff --git a/drivers/spi/spi-xcomm.c b/drivers/spi/spi-xcomm.c
index a3496c46cc1b..3aaae32b0384 100644
--- a/drivers/spi/spi-xcomm.c
+++ b/drivers/spi/spi-xcomm.c
@@ -188,8 +188,7 @@ static int spi_xcomm_transfer_one(struct spi_master *master,
}
status = 0;
- if (t->delay_usecs)
- udelay(t->delay_usecs);
+ spi_transfer_delay(t);
is_first = false;
}
--
2.20.1
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