From: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
To: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"boris.brezillon@bootlin.com" <boris.brezillon@bootlin.com>,
"broonie@kernel.org" <broonie@kernel.org>,
"marek.vasut@gmail.com" <marek.vasut@gmail.com>,
"vigneshr@ti.com" <vigneshr@ti.com>,
"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Cc: "robh@kernel.org" <robh@kernel.org>,
"mark.rutland@arm.com" <mark.rutland@arm.com>,
"shawnguo@kernel.org" <shawnguo@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"computersforpeace@gmail.com" <computersforpeace@gmail.com>,
"frieder.schrempf@exceet.de" <frieder.schrempf@exceet.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
Subject: [PATCH v3 2/7] spi: spi-mem: add support for octo mode I/O data transfer
Date: Tue, 23 Oct 2018 09:37:13 +0000 [thread overview]
Message-ID: <1540287311-1572-3-git-send-email-yogeshnarayan.gaur@nxp.com> (raw)
In-Reply-To: <1540287311-1572-1-git-send-email-yogeshnarayan.gaur@nxp.com>
Add support for octo mode I/O data transfer in spi-mem framework.
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
---
Changes for v3:
- Modified string 'octal' with 'octo'.
Changes for v2:
- Patch added in v2 version.
drivers/spi/spi-mem.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
index c6bdea7..2379efc 100644
--- a/drivers/spi/spi-mem.c
+++ b/drivers/spi/spi-mem.c
@@ -12,7 +12,7 @@
#include "internals.h"
-#define SPI_MEM_MAX_BUSWIDTH 4
+#define SPI_MEM_MAX_BUSWIDTH 8
/**
* spi_controller_dma_map_mem_op_data() - DMA-map the buffer attached to a
@@ -121,6 +121,13 @@ static int spi_check_buswidth_req(struct spi_mem *mem, u8 buswidth, bool tx)
break;
+ case 8:
+ if ((tx && (mode & SPI_TX_OCTO)) ||
+ (!tx && (mode & SPI_RX_OCTO)))
+ return 0;
+
+ break;
+
default:
break;
}
--
2.7.4
next prev parent reply other threads:[~2018-10-23 9:37 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-23 9:37 [PATCH v3 0/7] spi: add support for octo mode Yogesh Narayan Gaur
2018-10-23 9:37 ` [PATCH v3 1/7] spi: add support for octo mode I/O data transfer Yogesh Narayan Gaur
2018-10-23 9:48 ` Boris Brezillon
2018-10-23 9:37 ` Yogesh Narayan Gaur [this message]
2018-10-23 9:49 ` [PATCH v3 2/7] spi: spi-mem: " Boris Brezillon
2018-10-23 9:37 ` [PATCH v3 3/7] mtd: spi-nor: add opcodes for octo Read/Write commands Yogesh Narayan Gaur
2018-10-23 9:37 ` [PATCH v3 4/7] mtd: spi-nor: add octo read flag for flash mt35xu512aba Yogesh Narayan Gaur
2018-10-23 9:37 ` [PATCH v3 5/7] mtd: m25p80: add support of octo mode I/O transfer Yogesh Narayan Gaur
2018-10-23 9:37 ` [PATCH v3 6/7] spi: nxp-fspi: add octo mode flag bit for octal support Yogesh Narayan Gaur
2018-10-23 9:37 ` [PATCH v3 7/7] arm64: dts: lx2160a: update fspi node Yogesh Narayan Gaur
2018-11-13 8:00 ` [PATCH v3 0/7] spi: add support for octo mode Vignesh R
2018-11-22 5:19 ` Yogesh Narayan Gaur
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