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FMC ADC 100M 14b 4cha - Software
Commit 4ae23b38 authored by Federico Vaga's avatar Federico Vaga
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spi.c: update printk 

Signed-off-by: 's avatarFederico Vaga <federico.vaga@gmail.com>
parent a8d217f3
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Showing with 3 additions and 5 deletions
kernel/spi.c
View file @ 4ae23b38
......@@ -40,7 +40,6 @@ int fa_spi_xfer(struct fa_dev *fa, int cs, int num_bits,
unsigned long j = jiffies + HZ;
int err = 0;
pr_info("%s:%d out %d\n", __func__, __LINE__, tx);
/* Put out value in the T0 register*/
fmc_writel(fa->fmc, (tx & (num_bits-1)), FA_SPI_MEM_OFF + FA_SPI_TX(0));
/* Configure SPI controller */
......@@ -53,19 +52,18 @@ int fa_spi_xfer(struct fa_dev *fa, int cs, int num_bits,
ctrl |= FA_SPI_CTRL_BUSY;
fmc_writel(fa->fmc, ctrl, FA_SPI_MEM_OFF + FA_SPI_CTRL);
/* Wait transfer complete */
pr_info("%s:%d\n", __func__, __LINE__);
while(fmc_readl(fa->fmc, FA_SPI_MEM_OFF + FA_SPI_CTRL) & FA_SPI_CTRL_BUSY) {
pr_info("%s:%d\n", __func__, __LINE__);
if (jiffies > j) {
dev_err(&fa->fmc->dev, "SPI transfer error\n");
err = -EIO;
goto out;
}
}
pr_info("%s:%d\n", __func__, __LINE__);
/* Transfer compleate, read data */
*rx = fmc_readl(fa->fmc, FA_SPI_MEM_OFF + FA_SPI_RX(0)) & (num_bits-1);
dev_dbg(&fa->fmc->dev, "SPI transfer CS %d, NBIT %d, TX 0x%x RX 0x%x\n",
cs, num_bits, tx, *rx);
out:
pr_info("%s:%d in %d\n", __func__, __LINE__, *rx);
/* Clear Chip Select */
fmc_writel(fa->fmc, 0, FA_SPI_MEM_OFF + FA_SPI_CTRL_ASS);
......
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