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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>
This commit is contained in:
Leilk Liu 2015-10-26 16:09:41 +08:00 committed by Mark Brown
parent eca3a1ee8d
commit 79b5d3f24d
1 changed files with 26 additions and 33 deletions
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59
drivers/spi/spi-mt65xx.c
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@ -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;
}