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From: Vignesh R <vigneshr@ti.com>
To: Mark Brown <broonie@kernel.org>, Tony Lindgren <tony@atomide.com>
Cc: Rob Herring <robh@kernel.org>,
	Michal Suchanek <hramrach@gmail.com>,
	Russell King <linux@arm.linux.org.uk>,
	Vignesh R <vigneshr@ti.com>, <devicetree@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <linux-omap@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mtd@lists.infradead.org>, <linux-spi@vger.kernel.org>
Subject: [PATCH v3 3/5] mtd: devices: m25p80: add support for mmap read request
Date: Tue, 10 Nov 2015 10:59:57 +0530	[thread overview]
Message-ID: <1447133399-25658-4-git-send-email-vigneshr@ti.com> (raw)
In-Reply-To: <1447133399-25658-1-git-send-email-vigneshr@ti.com>

Certain spi controllers may support memory mapped interface to read from
m25p80 type flash devices. This interface provides better read
performance than regular SPI interface.
Call spi_mtd_mmap_read() interface, if supported, to make use of
memory-mapped interface.

Signed-off-by: Vignesh R <vigneshr@ti.com>
---
 drivers/mtd/devices/m25p80.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index fe9ceb7b5405..7ef0c5009ead 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -131,6 +131,11 @@ static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
 	/* convert the dummy cycles to the number of bytes */
 	dummy /= 8;
 
+	if (spi_mmap_read_supported(spi))
+		return spi_mtd_mmap_read(spi, from, len, retlen, buf,
+					 nor->read_opcode,
+					 nor->addr_width, dummy);
+
 	spi_message_init(&m);
 	memset(t, 0, (sizeof t));
 
-- 
2.6.3


WARNING: multiple messages have this Message-ID (diff)
From: Vignesh R <vigneshr@ti.com>
To: Mark Brown <broonie@kernel.org>, Tony Lindgren <tony@atomide.com>
Cc: Rob Herring <robh@kernel.org>,
	Michal Suchanek <hramrach@gmail.com>,
	Russell King <linux@arm.linux.org.uk>,
	Vignesh R <vigneshr@ti.com>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-mtd@lists.infradead.org, linux-spi@vger.kernel.org
Subject: [PATCH v3 3/5] mtd: devices: m25p80: add support for mmap read request
Date: Tue, 10 Nov 2015 10:59:57 +0530	[thread overview]
Message-ID: <1447133399-25658-4-git-send-email-vigneshr@ti.com> (raw)
In-Reply-To: <1447133399-25658-1-git-send-email-vigneshr@ti.com>

Certain spi controllers may support memory mapped interface to read from
m25p80 type flash devices. This interface provides better read
performance than regular SPI interface.
Call spi_mtd_mmap_read() interface, if supported, to make use of
memory-mapped interface.

Signed-off-by: Vignesh R <vigneshr@ti.com>
---
 drivers/mtd/devices/m25p80.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index fe9ceb7b5405..7ef0c5009ead 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -131,6 +131,11 @@ static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
 	/* convert the dummy cycles to the number of bytes */
 	dummy /= 8;
 
+	if (spi_mmap_read_supported(spi))
+		return spi_mtd_mmap_read(spi, from, len, retlen, buf,
+					 nor->read_opcode,
+					 nor->addr_width, dummy);
+
 	spi_message_init(&m);
 	memset(t, 0, (sizeof t));
 
-- 
2.6.3

WARNING: multiple messages have this Message-ID (diff)
From: vigneshr@ti.com (Vignesh R)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 3/5] mtd: devices: m25p80: add support for mmap read request
Date: Tue, 10 Nov 2015 10:59:57 +0530	[thread overview]
Message-ID: <1447133399-25658-4-git-send-email-vigneshr@ti.com> (raw)
In-Reply-To: <1447133399-25658-1-git-send-email-vigneshr@ti.com>

Certain spi controllers may support memory mapped interface to read from
m25p80 type flash devices. This interface provides better read
performance than regular SPI interface.
Call spi_mtd_mmap_read() interface, if supported, to make use of
memory-mapped interface.

Signed-off-by: Vignesh R <vigneshr@ti.com>
---
 drivers/mtd/devices/m25p80.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index fe9ceb7b5405..7ef0c5009ead 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -131,6 +131,11 @@ static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
 	/* convert the dummy cycles to the number of bytes */
 	dummy /= 8;
 
+	if (spi_mmap_read_supported(spi))
+		return spi_mtd_mmap_read(spi, from, len, retlen, buf,
+					 nor->read_opcode,
+					 nor->addr_width, dummy);
+
 	spi_message_init(&m);
 	memset(t, 0, (sizeof t));
 
-- 
2.6.3

  parent reply	other threads:[~2015-11-10  5:30 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-10  5:29 [PATCH v3 0/5] Add memory mapped read support for ti-qspi Vignesh R
2015-11-10  5:29 ` Vignesh R
2015-11-10  5:29 ` Vignesh R
2015-11-10  5:29 ` Vignesh R
2015-11-10  5:29 ` [PATCH v3 1/5] spi: introduce mmap read support for spi flash devices Vignesh R
2015-11-10  5:29   ` Vignesh R
2015-11-10  5:29   ` Vignesh R
2015-11-10 23:23   ` Brian Norris
2015-11-10 23:23     ` Brian Norris
2015-11-10 23:23     ` Brian Norris
2015-11-11  6:50     ` R, Vignesh
2015-11-11  6:50       ` R, Vignesh
2015-11-11  6:50       ` R, Vignesh
2015-11-11  7:20       ` Brian Norris
2015-11-11  7:20         ` Brian Norris
2015-11-11  7:20         ` Brian Norris
2015-11-13 16:05         ` Cyrille Pitchen
2015-11-13 16:05           ` Cyrille Pitchen
2015-11-13 16:05           ` Cyrille Pitchen
2015-11-13 16:05           ` Cyrille Pitchen
2015-11-17  6:32           ` Vignesh R
2015-11-17  6:32             ` Vignesh R
2015-11-17  6:32             ` Vignesh R
2015-11-17  6:32             ` Vignesh R
2015-11-17 17:48             ` Brian Norris
2015-11-17 17:48               ` Brian Norris
2015-11-13 14:06       ` Mike Looijmans
2015-11-13 14:06         ` Mike Looijmans
2015-11-13 14:06         ` Mike Looijmans
2015-11-11 19:24   ` Brian Norris
2015-11-11 19:24     ` Brian Norris
2015-11-11 19:24     ` Brian Norris
2015-11-12  4:32     ` Vignesh R
2015-11-12  4:32       ` Vignesh R
2015-11-12  4:32       ` Vignesh R
2015-11-10  5:29 ` [PATCH v3 2/5] spi: spi-ti-qspi: add mmap mode read support Vignesh R
2015-11-10  5:29   ` Vignesh R
2015-11-10  5:29   ` Vignesh R
2015-11-10  5:29 ` Vignesh R [this message]
2015-11-10  5:29   ` [PATCH v3 3/5] mtd: devices: m25p80: add support for mmap read request Vignesh R
2015-11-10  5:29   ` Vignesh R
2015-11-10  5:29 ` [PATCH v3 4/5] ARM: dts: DRA7: add entry for qspi mmap region Vignesh R
2015-11-10  5:29   ` Vignesh R
2015-11-10  5:29   ` Vignesh R
2015-11-10  5:29 ` [PATCH v3 5/5] ARM: dts: AM4372: " Vignesh R
2015-11-10  5:29   ` Vignesh R
2015-11-10  5:29   ` Vignesh R

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