On Wed, Dec 12, 2018 at 11:08 PM Vignesh R vigneshr@ti.com wrote:
Add non DM version of SPI_MEM to support easy migration to new SPI NOR framework. This can be removed once DM_SPI conversion is complete.
Signed-off-by: Vignesh R vigneshr@ti.com
drivers/spi/Kconfig | 4 +- drivers/spi/Makefile | 1 + drivers/spi/spi-mem-nodm.c | 89 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 92 insertions(+), 2 deletions(-) create mode 100644 drivers/spi/spi-mem-nodm.c
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index a7bb5b35c294..5ee855fc5319 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -16,8 +16,6 @@ config DM_SPI typically use driver-private data instead of extending the spi_slave structure.
-if DM_SPI
config SPI_MEM bool "SPI memory extension" help @@ -25,6 +23,8 @@ config SPI_MEM This extension is meant to simplify interaction with SPI memories by providing an high-level interface to send memory-like commands.
+if DM_SPI
config ALTERA_SPI bool "Altera SPI driver" help diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index 392a92579578..32ba3b61f70d 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_SOFT_SPI) += soft_spi.o obj-$(CONFIG_SPI_MEM) += spi-mem.o else obj-y += spi.o +obj-$(CONFIG_SPI_MEM) += spi-mem-nodm.o obj-$(CONFIG_SOFT_SPI) += soft_spi_legacy.o endif
diff --git a/drivers/spi/spi-mem-nodm.c b/drivers/spi/spi-mem-nodm.c new file mode 100644 index 000000000000..4d91761f56d3 --- /dev/null +++ b/drivers/spi/spi-mem-nodm.c @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: GPL-2.0+ +/*
- Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
- */
+#include <spi.h> +#include <spi-mem.h>
+int spi_mem_exec_op(struct spi_slave *slave,
const struct spi_mem_op *op)+{
unsigned int pos = 0;const u8 *tx_buf = NULL;u8 *rx_buf = NULL;u8 *op_buf;int op_len;u32 flag;int ret;int i;if (op->data.nbytes) {if (op->data.dir == SPI_MEM_DATA_IN)rx_buf = op->data.buf.in;elsetx_buf = op->data.buf.out;}op_len = sizeof(op->cmd.opcode) + op->addr.nbytes + op->dummy.nbytes;op_buf = calloc(1, op_len);ret = spi_claim_bus(slave);if (ret < 0)return ret;op_buf[pos++] = op->cmd.opcode;if (op->addr.nbytes) {for (i = 0; i < op->addr.nbytes; i++)op_buf[pos + i] = op->addr.val >>(8 * (op->addr.nbytes - i - 1));pos += op->addr.nbytes;}if (op->dummy.nbytes)memset(op_buf + pos, 0xff, op->dummy.nbytes);/* 1st transfer: opcode + address + dummy cycles */flag = SPI_XFER_BEGIN;/* Make sure to set END bit if no tx or rx data messages follow */if (!tx_buf && !rx_buf)flag |= SPI_XFER_END;ret = spi_xfer(slave, op_len * 8, op_buf, NULL, flag);if (ret)return ret;/* 2nd transfer: rx or tx data path */if (tx_buf || rx_buf) {ret = spi_xfer(slave, op->data.nbytes * 8, tx_buf,rx_buf, SPI_XFER_END);if (ret)return ret;}spi_release_bus(slave);for (i = 0; i < pos; i++)debug("%02x ", op_buf[i]);debug("| [%dB %s] ",tx_buf || rx_buf ? op->data.nbytes : 0,tx_buf || rx_buf ? (tx_buf ? "out" : "in") : "-");for (i = 0; i < op->data.nbytes; i++)debug("%02x ", tx_buf ? tx_buf[i] : rx_buf[i]);debug("[ret %d]\n", ret);free(op_buf);if (ret < 0)return ret;return 0;+}
+int spi_mem_adjust_op_size(struct spi_slave *slave,
struct spi_mem_op *op)+{
return 0;
Does it not return data size of SPI mem, or not need for non-dm?