Commit fb249e10 authored by Tudor Ambarus's avatar Tudor Ambarus
Browse files

Merge tag 'spi-mem-dtr' into spi-nor/next 

spi: Support for DTR ops

Merge the SPIMEM DTR bits in spi-nor/next so that we can
continue the development on top of them.
parents cc59e6bb 4728f073

drivers/spi/atmel-quadspi.c

+6 −0
Original line number Diff line number Diff line
@@ -285,6 +285,12 @@ static bool atmel_qspi_supports_op(struct spi_mem *mem, 
		op->dummy.nbytes == 0)

		return false;



	/* DTR ops not supported. */

	if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr)

		return false;

	if (op->cmd.nbytes != 1)

		return false;



	return true;

}

drivers/spi/spi-mem.c

+10 −6
Original line number Diff line number Diff line
@@ -156,6 +156,12 @@ bool spi_mem_default_supports_op(struct spi_mem *mem, 
				   op->data.dir == SPI_MEM_DATA_OUT))

		return false;



	if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr)

		return false;



	if (op->cmd.nbytes != 1)

		return false;



	return true;

}

EXPORT_SYMBOL_GPL(spi_mem_default_supports_op);
@@ -170,7 +176,7 @@ static bool spi_mem_buswidth_is_valid(u8 buswidth) 


static int spi_mem_check_op(const struct spi_mem_op *op)

{

	if (!op->cmd.buswidth)

	if (!op->cmd.buswidth || !op->cmd.nbytes)

		return -EINVAL;



	if ((op->addr.nbytes && !op->addr.buswidth) ||
@@ -306,8 +312,7 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) 
			return ret;

	}



	tmpbufsize = sizeof(op->cmd.opcode) + op->addr.nbytes +

		     op->dummy.nbytes;

	tmpbufsize = op->cmd.nbytes + op->addr.nbytes + op->dummy.nbytes;



	/*

	 * Allocate a buffer to transmit the CMD, ADDR cycles with kmalloc() so
@@ -322,7 +327,7 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) 


	tmpbuf[0] = op->cmd.opcode;

	xfers[xferpos].tx_buf = tmpbuf;

	xfers[xferpos].len = sizeof(op->cmd.opcode);

	xfers[xferpos].len = op->cmd.nbytes;

	xfers[xferpos].tx_nbits = op->cmd.buswidth;

	spi_message_add_tail(&xfers[xferpos], &msg);

	xferpos++;
@@ -424,8 +429,7 @@ int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op) 
		return ctlr->mem_ops->adjust_op_size(mem, op);



	if (!ctlr->mem_ops || !ctlr->mem_ops->exec_op) {

		len = sizeof(op->cmd.opcode) + op->addr.nbytes +

		      op->dummy.nbytes;

		len = op->cmd.nbytes + op->addr.nbytes + op->dummy.nbytes;



		if (len > spi_max_transfer_size(mem->spi))

			return -EINVAL;

drivers/spi/spi-mtk-nor.c

+8 −2
Original line number Diff line number Diff line
@@ -195,7 +195,7 @@ static int mtk_nor_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op) 
		}

	}



	len = MTK_NOR_PRG_MAX_SIZE - sizeof(op->cmd.opcode) - op->addr.nbytes -

	len = MTK_NOR_PRG_MAX_SIZE - op->cmd.nbytes - op->addr.nbytes -

	      op->dummy.nbytes;

	if (op->data.nbytes > len)

		op->data.nbytes = len;
@@ -211,6 +211,12 @@ static bool mtk_nor_supports_op(struct spi_mem *mem, 
	if (op->cmd.buswidth != 1)

		return false;



	/* DTR ops not supported. */

	if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr)

		return false;

	if (op->cmd.nbytes != 1)

		return false;



	if ((op->addr.nbytes == 3) || (op->addr.nbytes == 4)) {

		if ((op->data.dir == SPI_MEM_DATA_IN) && mtk_nor_match_read(op))

			return true;
@@ -219,7 +225,7 @@ static bool mtk_nor_supports_op(struct spi_mem *mem, 
			       (op->dummy.buswidth == 0) &&

			       (op->data.buswidth == 1);

	}

	len = sizeof(op->cmd.opcode) + op->addr.nbytes + op->dummy.nbytes;

	len = op->cmd.nbytes + op->addr.nbytes + op->dummy.nbytes;

	if ((len > MTK_NOR_PRG_MAX_SIZE) ||

	    ((op->data.nbytes) && (len == MTK_NOR_PRG_MAX_SIZE)))

		return false;

drivers/spi/spi-mxic.c

+2 −1
Original line number Diff line number Diff line
@@ -356,6 +356,7 @@ static int mxic_spi_mem_exec_op(struct spi_mem *mem, 
	int nio = 1, i, ret;

	u32 ss_ctrl;

	u8 addr[8];

	u8 opcode = op->cmd.opcode;



	ret = mxic_spi_set_freq(mxic, mem->spi->max_speed_hz);

	if (ret)
@@ -393,7 +394,7 @@ static int mxic_spi_mem_exec_op(struct spi_mem *mem, 
	writel(readl(mxic->regs + HC_CFG) | HC_CFG_MAN_CS_ASSERT,

	       mxic->regs + HC_CFG);



	ret = mxic_spi_data_xfer(mxic, &op->cmd.opcode, NULL, 1);

	ret = mxic_spi_data_xfer(mxic, &opcode, NULL, 1);

	if (ret)

		goto out;

drivers/spi/spi-zynq-qspi.c

+6 −5
Original line number Diff line number Diff line
@@ -527,20 +527,21 @@ static int zynq_qspi_exec_mem_op(struct spi_mem *mem, 
	struct zynq_qspi *xqspi = spi_controller_get_devdata(mem->spi->master);

	int err = 0, i;

	u8 *tmpbuf;

	u8 opcode = op->cmd.opcode;



	dev_dbg(xqspi->dev, "cmd:%#x mode:%d.%d.%d.%d\n",

		op->cmd.opcode, op->cmd.buswidth, op->addr.buswidth,

		opcode, op->cmd.buswidth, op->addr.buswidth,

		op->dummy.buswidth, op->data.buswidth);



	zynq_qspi_chipselect(mem->spi, true);

	zynq_qspi_config_op(xqspi, mem->spi);



	if (op->cmd.opcode) {

	if (op->cmd.nbytes) {

		reinit_completion(&xqspi->data_completion);

		xqspi->txbuf = (u8 *)&op->cmd.opcode;

		xqspi->txbuf = &opcode;

		xqspi->rxbuf = NULL;

		xqspi->tx_bytes = sizeof(op->cmd.opcode);

		xqspi->rx_bytes = sizeof(op->cmd.opcode);

		xqspi->tx_bytes = op->cmd.nbytes;

		xqspi->rx_bytes = op->cmd.nbytes;

		zynq_qspi_write_op(xqspi, ZYNQ_QSPI_FIFO_DEPTH, true);

		zynq_qspi_write(xqspi, ZYNQ_QSPI_IEN_OFFSET,

				ZYNQ_QSPI_IXR_RXTX_MASK);

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