From: Vignesh R <vigneshr@ti.com>
Date: Tue, 5 Feb 2019 05:59:12 +0000 (+0530)
Subject: spi: spi-mem: Allow use of spi_mem_exec_op for all SPI modes
X-Git-Tag: v2019.04-rc1~2^2~17
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6d373e523f899c5a8f8808327215e3b9eb3f92f4;p=platform%2Fkernel%2Fu-boot.git

spi: spi-mem: Allow use of spi_mem_exec_op for all SPI modes

SPI controllers support all types of SPI modes including dual/quad bus
widths. Therefore remove constraint wrt SPI mode from spi-mem layer.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
---

diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
index af9aef0..1da20b8 100644
--- a/drivers/spi/spi-mem.c
+++ b/drivers/spi/spi-mem.c
@@ -323,15 +323,6 @@ int spi_mem_exec_op(struct spi_slave *slave, const struct spi_mem_op *op)
 		return -EIO;
 #else
 
-	/* U-Boot does not support parallel SPI data lanes */
-	if ((op->cmd.buswidth != 1) ||
-	    (op->addr.nbytes && op->addr.buswidth != 1) ||
-	    (op->dummy.nbytes && op->dummy.buswidth != 1) ||
-	    (op->data.nbytes && op->data.buswidth != 1)) {
-		printf("Dual/Quad raw SPI transfers not supported\n");
-		return -ENOTSUPP;
-	}
-
 	if (op->data.nbytes) {
 		if (op->data.dir == SPI_MEM_DATA_IN)
 			rx_buf = op->data.buf.in;