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path: root/drivers/spi/atmel_spi.c
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Diffstat (limited to 'drivers/spi/atmel_spi.c')
-rw-r--r--drivers/spi/atmel_spi.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 545519a063b8..293b7cab3e57 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -198,6 +198,11 @@ static void atmel_spi_next_xfer(struct spi_master *master,
198 len >>= 1; 198 len >>= 1;
199 spi_writel(as, RCR, len); 199 spi_writel(as, RCR, len);
200 spi_writel(as, TCR, len); 200 spi_writel(as, TCR, len);
201
202 dev_dbg(&msg->spi->dev,
203 " start xfer %p: len %u tx %p/%08x rx %p/%08x\n",
204 xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
205 xfer->rx_buf, xfer->rx_dma);
201 } else { 206 } else {
202 xfer = as->next_transfer; 207 xfer = as->next_transfer;
203 remaining = as->next_remaining_bytes; 208 remaining = as->next_remaining_bytes;
@@ -208,8 +213,8 @@ static void atmel_spi_next_xfer(struct spi_master *master,
208 213
209 if (remaining > 0) 214 if (remaining > 0)
210 len = remaining; 215 len = remaining;
211 else if (!atmel_spi_xfer_is_last(msg, xfer) && 216 else if (!atmel_spi_xfer_is_last(msg, xfer)
212 atmel_spi_xfer_can_be_chained(xfer)) { 217 && atmel_spi_xfer_can_be_chained(xfer)) {
213 xfer = list_entry(xfer->transfer_list.next, 218 xfer = list_entry(xfer->transfer_list.next,
214 struct spi_transfer, transfer_list); 219 struct spi_transfer, transfer_list);
215 len = xfer->len; 220 len = xfer->len;
@@ -230,6 +235,11 @@ static void atmel_spi_next_xfer(struct spi_master *master,
230 len >>= 1; 235 len >>= 1;
231 spi_writel(as, RNCR, len); 236 spi_writel(as, RNCR, len);
232 spi_writel(as, TNCR, len); 237 spi_writel(as, TNCR, len);
238
239 dev_dbg(&msg->spi->dev,
240 " next xfer %p: len %u tx %p/%08x rx %p/%08x\n",
241 xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
242 xfer->rx_buf, xfer->rx_dma);
233 } else { 243 } else {
234 spi_writel(as, RNCR, 0); 244 spi_writel(as, RNCR, 0);
235 spi_writel(as, TNCR, 0); 245 spi_writel(as, TNCR, 0);
@@ -246,12 +256,6 @@ static void atmel_spi_next_xfer(struct spi_master *master,
246 * It should be doable, though. Just not now... 256 * It should be doable, though. Just not now...
247 */ 257 */
248 spi_writel(as, IER, SPI_BIT(ENDRX) | SPI_BIT(OVRES)); 258 spi_writel(as, IER, SPI_BIT(ENDRX) | SPI_BIT(OVRES));
249
250 dev_dbg(&msg->spi->dev,
251 " start xfer %p: len %u tx %p/%08x rx %p/%08x imr %03x\n",
252 xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
253 xfer->rx_buf, xfer->rx_dma, spi_readl(as, IMR));
254
255 spi_writel(as, PTCR, SPI_BIT(TXTEN) | SPI_BIT(RXTEN)); 259 spi_writel(as, PTCR, SPI_BIT(TXTEN) | SPI_BIT(RXTEN));
256} 260}
257 261