summaryrefslogtreecommitdiff
path: root/drivers/spi
diff options
context:
space:
mode:
authorLeilk Liu <leilk.liu@mediatek.com>2015-10-26 11:09:41 +0300
committerMark Brown <broonie@kernel.org>2015-10-27 07:33:41 +0300
commit79b5d3f24dcec547ea5db7d2e0b557a36f92b16b (patch)
treeea920f9a432e76ec0f2961ccd1384d4165ed3ddd /drivers/spi
parenteca3a1ee8dd7ec5819bd77d598044eb6ecdf4495 (diff)
downloadlinux-79b5d3f24dcec547ea5db7d2e0b557a36f92b16b.tar.xz
spi: mediatek: remove mtk_spi_config
mtk_spi_config() and mtk_spi_prepare_message() both initialize spi register, so remove mtk_spi_config() and init all register in mtk_spi_prepare_message(). Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-mt65xx.c59
1 files changed, 26 insertions, 33 deletions
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index ecb6c58238c4..7bd84c8061c6 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -131,10 +131,34 @@ static void mtk_spi_reset(struct mtk_spi *mdata)
writel(reg_val, mdata->base + SPI_CMD_REG);
}
-static void mtk_spi_config(struct mtk_spi *mdata,
- struct mtk_chip_config *chip_config)
+static int mtk_spi_prepare_message(struct spi_master *master,
+ struct spi_message *msg)
{
+ u16 cpha, cpol;
u32 reg_val;
+ struct mtk_chip_config *chip_config;
+ struct spi_device *spi = msg->spi;
+ struct mtk_spi *mdata = spi_master_get_devdata(master);
+
+ cpha = spi->mode & SPI_CPHA ? 1 : 0;
+ cpol = spi->mode & SPI_CPOL ? 1 : 0;
+
+ chip_config = spi->controller_data;
+ if (!chip_config) {
+ chip_config = (void *)&mtk_default_chip_info;
+ spi->controller_data = chip_config;
+ }
+
+ reg_val = readl(mdata->base + SPI_CMD_REG);
+ if (cpha)
+ reg_val |= SPI_CMD_CPHA;
+ else
+ reg_val &= ~SPI_CMD_CPHA;
+ if (cpol)
+ reg_val |= SPI_CMD_CPOL;
+ else
+ reg_val &= ~SPI_CMD_CPOL;
+ writel(reg_val, mdata->base + SPI_CMD_REG);
reg_val = readl(mdata->base + SPI_CMD_REG);
@@ -171,37 +195,6 @@ static void mtk_spi_config(struct mtk_spi *mdata,
/* pad select */
if (mdata->dev_comp->need_pad_sel)
writel(mdata->pad_sel, mdata->base + SPI_PAD_SEL_REG);
-}
-
-static int mtk_spi_prepare_message(struct spi_master *master,
- struct spi_message *msg)
-{
- u32 reg_val;
- u8 cpha, cpol;
- struct mtk_chip_config *chip_config;
- struct spi_device *spi = msg->spi;
- struct mtk_spi *mdata = spi_master_get_devdata(master);
-
- cpha = spi->mode & SPI_CPHA ? 1 : 0;
- cpol = spi->mode & SPI_CPOL ? 1 : 0;
-
- reg_val = readl(mdata->base + SPI_CMD_REG);
- if (cpha)
- reg_val |= SPI_CMD_CPHA;
- else
- reg_val &= ~SPI_CMD_CPHA;
- if (cpol)
- reg_val |= SPI_CMD_CPOL;
- else
- reg_val &= ~SPI_CMD_CPOL;
- writel(reg_val, mdata->base + SPI_CMD_REG);
-
- chip_config = spi->controller_data;
- if (!chip_config) {
- chip_config = (void *)&mtk_default_chip_info;
- spi->controller_data = chip_config;
- }
- mtk_spi_config(mdata, chip_config);
return 0;
}