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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 v4 2/7] spi: spi-mem: add support for octo mode I/O data transfer
Date: Thu, 22 Nov 2018 05:14:37 +0000	[thread overview]
Message-ID: <1542863544-21257-3-git-send-email-yogeshnarayan.gaur@nxp.com> (raw)
In-Reply-To: <1542863544-21257-1-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>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
---
Changes for v4:
- None
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 62a7b80..388f849 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


WARNING: multiple messages have this Message-ID (diff)
From: yogeshnarayan.gaur@nxp.com (Yogesh Narayan Gaur)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 2/7] spi: spi-mem: add support for octo mode I/O data transfer
Date: Thu, 22 Nov 2018 05:14:37 +0000	[thread overview]
Message-ID: <1542863544-21257-3-git-send-email-yogeshnarayan.gaur@nxp.com> (raw)
In-Reply-To: <1542863544-21257-1-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>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
---
Changes for v4:
- None
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 62a7b80..388f849 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

  parent reply	other threads:[~2018-11-22  5:14 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-22  5:14 [PATCH v4 0/7] spi: add support for octo mode Yogesh Narayan Gaur
2018-11-22  5:14 ` Yogesh Narayan Gaur
2018-11-22  5:14 ` Yogesh Narayan Gaur
2018-11-22  5:14 ` [PATCH v4 1/7] spi: add support for octo mode I/O data transfer Yogesh Narayan Gaur
2018-11-22  5:14   ` Yogesh Narayan Gaur
2018-11-22  5:14   ` Yogesh Narayan Gaur
2018-12-03  8:04   ` Boris Brezillon
2018-12-03  8:04     ` Boris Brezillon
2018-12-03  8:04     ` Boris Brezillon
2018-12-03  8:47     ` Yogesh Narayan Gaur
2018-12-03  8:47       ` Yogesh Narayan Gaur
2018-12-03  8:47       ` Yogesh Narayan Gaur
2018-11-22  5:14 ` Yogesh Narayan Gaur [this message]
2018-11-22  5:14   ` [PATCH v4 2/7] spi: spi-mem: " Yogesh Narayan Gaur
2018-11-22  5:14   ` Yogesh Narayan Gaur
2018-11-22  5:14 ` [PATCH v4 3/7] mtd: spi-nor: add opcodes for octo Read/Write commands Yogesh Narayan Gaur
2018-11-22  5:14   ` Yogesh Narayan Gaur
2018-11-22  5:14   ` Yogesh Narayan Gaur
2018-11-22  5:14 ` [PATCH v4 4/7] mtd: spi-nor: add octo read flag for flash mt35xu512aba Yogesh Narayan Gaur
2018-11-22  5:14   ` Yogesh Narayan Gaur
2018-11-22  5:14   ` Yogesh Narayan Gaur
2018-11-22  5:14 ` [PATCH v4 5/7] mtd: m25p80: add support of octo mode I/O transfer Yogesh Narayan Gaur
2018-11-22  5:14   ` Yogesh Narayan Gaur
2018-11-22  5:14   ` Yogesh Narayan Gaur
2018-11-22  5:15 ` [PATCH v4 6/7] spi: nxp-fspi: add octo mode flag bit for octal support Yogesh Narayan Gaur
2018-11-22  5:15   ` Yogesh Narayan Gaur
2018-11-22  5:15   ` Yogesh Narayan Gaur
2018-11-22  5:15 ` [PATCH v4 7/7] arm64: dts: lx2160a: update fspi node Yogesh Narayan Gaur
2018-11-22  5:15   ` Yogesh Narayan Gaur
2018-11-22  5:15   ` Yogesh Narayan Gaur

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