From: Axel Lin <axel.lin-8E1dMatC8ynQT0dZR+AlfA@public.gmane.org>
To: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Alexander Shiyan <shc_work-JGs/UdohzUI@public.gmane.org>,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] spi: clps711x: Remove duplicate code to set default bits_per_word and max speed
Date: Sun, 02 Mar 2014 23:24:18 +0800 [thread overview]
Message-ID: <1393773858.4044.12.camel@phoenix> (raw)
In the implementation of __spi_validate(), spi core will set transfer
bits_per_word and max speed as spi device default if it is not set for
this transfer. So we can remove the same logic in spi_clps711x_setup_xfer() and
spi_clps711x_transfer_one().
Signed-off-by: Axel Lin <axel.lin-8E1dMatC8ynQT0dZR+AlfA@public.gmane.org>
---
drivers/spi/spi-clps711x.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/spi/spi-clps711x.c b/drivers/spi/spi-clps711x.c
index 3900c31..74642f8 100644
--- a/drivers/spi/spi-clps711x.c
+++ b/drivers/spi/spi-clps711x.c
@@ -44,17 +44,16 @@ static int spi_clps711x_setup(struct spi_device *spi)
static void spi_clps711x_setup_xfer(struct spi_device *spi,
struct spi_transfer *xfer)
{
- u32 speed = xfer->speed_hz ? : spi->max_speed_hz;
struct spi_clps711x_data *hw = spi_master_get_devdata(spi->master);
/* Setup SPI frequency divider */
- if (!speed || (speed >= hw->max_speed_hz))
+ if (!xfer->speed_hz || (xfer->speed_hz >= hw->max_speed_hz))
clps_writel((clps_readl(SYSCON1) & ~SYSCON1_ADCKSEL_MASK) |
SYSCON1_ADCKSEL(3), SYSCON1);
- else if (speed >= (hw->max_speed_hz / 2))
+ else if (xfer->speed_hz >= (hw->max_speed_hz / 2))
clps_writel((clps_readl(SYSCON1) & ~SYSCON1_ADCKSEL_MASK) |
SYSCON1_ADCKSEL(2), SYSCON1);
- else if (speed >= (hw->max_speed_hz / 8))
+ else if (xfer->speed_hz >= (hw->max_speed_hz / 8))
clps_writel((clps_readl(SYSCON1) & ~SYSCON1_ADCKSEL_MASK) |
SYSCON1_ADCKSEL(1), SYSCON1);
else
@@ -86,7 +85,7 @@ static int spi_clps711x_transfer_one(struct spi_master *master,
spi_clps711x_setup_xfer(spi, xfer);
hw->len = xfer->len;
- hw->bpw = xfer->bits_per_word ? : spi->bits_per_word;
+ hw->bpw = xfer->bits_per_word;
hw->tx_buf = (u8 *)xfer->tx_buf;
hw->rx_buf = (u8 *)xfer->rx_buf;
--
1.8.1.2
--
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next reply other threads:[~2014-03-02 15:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-02 15:24 Axel Lin [this message]
2014-03-13 9:52 ` [PATCH] spi: clps711x: Remove duplicate code to set default bits_per_word and max speed Mark Brown
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