From c9ec3900abf279d9276a0661c9bed2550c1f0bb5 Mon Sep 17 00:00:00 2001
From: Brian Norris <computersforpeace@gmail.com>
Date: Thu, 13 Aug 2015 15:46:03 -0700
Subject: mtd: spi-nor: assign mtd->priv in spi_nor_scan()

Layering suggests that the SPI NOR layer (not the hardware driver)
should be initializing the MTD layer.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
---
 drivers/mtd/spi-nor/fsl-quadspi.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'drivers/mtd/spi-nor/fsl-quadspi.c')

diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index d32b7e04ccca..ad9f73ae6eea 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -1018,7 +1018,6 @@ static int fsl_qspi_probe(struct platform_device *pdev)
 		nor->mtd = mtd;
 		nor->dev = dev;
 		nor->priv = q;
-		mtd->priv = nor;
 
 		/* fill the hooks */
 		nor->read_reg = fsl_qspi_read_reg;
-- 
cgit v1.2.3


From 1976367173a47f801c67b5f456922d79c60d0d42 Mon Sep 17 00:00:00 2001
From: Brian Norris <computersforpeace@gmail.com>
Date: Thu, 13 Aug 2015 15:46:05 -0700
Subject: mtd: spi-nor: embed struct mtd_info within struct spi_nor

This reflects the proper layering, so let's do it.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
---
 drivers/mtd/devices/m25p80.c      | 10 ++++------
 drivers/mtd/spi-nor/fsl-quadspi.c | 10 ++++------
 drivers/mtd/spi-nor/nxp-spifi.c   |  6 ++----
 drivers/mtd/spi-nor/spi-nor.c     |  8 ++++----
 include/linux/mtd/spi-nor.h       |  2 +-
 5 files changed, 15 insertions(+), 21 deletions(-)

(limited to 'drivers/mtd/spi-nor/fsl-quadspi.c')

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 24965ae9f7aa..b6bc9a2a5f87 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -31,7 +31,6 @@
 struct m25p {
 	struct spi_device	*spi;
 	struct spi_nor		spi_nor;
-	struct mtd_info		mtd;
 	u8			command[MAX_CMD_SIZE];
 };
 
@@ -159,7 +158,7 @@ static int m25p80_erase(struct spi_nor *nor, loff_t offset)
 	struct m25p *flash = nor->priv;
 
 	dev_dbg(nor->dev, "%dKiB at 0x%08x\n",
-		flash->mtd.erasesize / 1024, (u32)offset);
+		flash->spi_nor.mtd.erasesize / 1024, (u32)offset);
 
 	/* Set up command buffer. */
 	flash->command[0] = nor->erase_opcode;
@@ -201,7 +200,6 @@ static int m25p_probe(struct spi_device *spi)
 	nor->read_reg = m25p80_read_reg;
 
 	nor->dev = &spi->dev;
-	nor->mtd = &flash->mtd;
 	nor->priv = flash;
 
 	spi_set_drvdata(spi, flash);
@@ -213,7 +211,7 @@ static int m25p_probe(struct spi_device *spi)
 		mode = SPI_NOR_DUAL;
 
 	if (data && data->name)
-		flash->mtd.name = data->name;
+		nor->mtd.name = data->name;
 
 	/* For some (historical?) reason many platforms provide two different
 	 * names in flash_platform_data: "name" and "type". Quite often name is
@@ -231,7 +229,7 @@ static int m25p_probe(struct spi_device *spi)
 
 	ppdata.of_node = spi->dev.of_node;
 
-	return mtd_device_parse_register(&flash->mtd, NULL, &ppdata,
+	return mtd_device_parse_register(&nor->mtd, NULL, &ppdata,
 			data ? data->parts : NULL,
 			data ? data->nr_parts : 0);
 }
@@ -242,7 +240,7 @@ static int m25p_remove(struct spi_device *spi)
 	struct m25p	*flash = spi_get_drvdata(spi);
 
 	/* Clean up MTD stuff. */
-	return mtd_device_unregister(&flash->mtd);
+	return mtd_device_unregister(&flash->spi_nor.mtd);
 }
 
 /*
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index ad9f73ae6eea..19f61783cb56 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -259,7 +259,6 @@ static struct fsl_qspi_devtype_data imx6ul_data = {
 
 #define FSL_QSPI_MAX_CHIP	4
 struct fsl_qspi {
-	struct mtd_info mtd[FSL_QSPI_MAX_CHIP];
 	struct spi_nor nor[FSL_QSPI_MAX_CHIP];
 	void __iomem *iobase;
 	void __iomem *ahb_addr;
@@ -888,7 +887,7 @@ static int fsl_qspi_erase(struct spi_nor *nor, loff_t offs)
 	int ret;
 
 	dev_dbg(nor->dev, "%dKiB at 0x%08x:0x%08x\n",
-		nor->mtd->erasesize / 1024, q->chip_base_addr, (u32)offs);
+		nor->mtd.erasesize / 1024, q->chip_base_addr, (u32)offs);
 
 	ret = fsl_qspi_runcmd(q, nor->erase_opcode, offs, 0);
 	if (ret)
@@ -1013,9 +1012,8 @@ static int fsl_qspi_probe(struct platform_device *pdev)
 			i *= 2;
 
 		nor = &q->nor[i];
-		mtd = &q->mtd[i];
+		mtd = &nor->mtd;
 
-		nor->mtd = mtd;
 		nor->dev = dev;
 		nor->priv = q;
 
@@ -1086,7 +1084,7 @@ last_init_failed:
 		/* skip the holes */
 		if (!q->has_second_chip)
 			i *= 2;
-		mtd_device_unregister(&q->mtd[i]);
+		mtd_device_unregister(&q->nor[i].mtd);
 	}
 mutex_failed:
 	mutex_destroy(&q->lock);
@@ -1106,7 +1104,7 @@ static int fsl_qspi_remove(struct platform_device *pdev)
 		/* skip the holes */
 		if (!q->has_second_chip)
 			i *= 2;
-		mtd_device_unregister(&q->mtd[i]);
+		mtd_device_unregister(&q->nor[i].mtd);
 	}
 
 	/* disable the hardware */
diff --git a/drivers/mtd/spi-nor/nxp-spifi.c b/drivers/mtd/spi-nor/nxp-spifi.c
index ce6a478a02a5..0f6b452574bd 100644
--- a/drivers/mtd/spi-nor/nxp-spifi.c
+++ b/drivers/mtd/spi-nor/nxp-spifi.c
@@ -60,7 +60,6 @@ struct nxp_spifi {
 	struct clk *clk_reg;
 	void __iomem *io_base;
 	void __iomem *flash_base;
-	struct mtd_info mtd;
 	struct spi_nor nor;
 	bool memory_mode;
 	u32 mcmd;
@@ -331,7 +330,6 @@ static int nxp_spifi_setup_flash(struct nxp_spifi *spifi,
 
 	writel(ctrl, spifi->io_base + SPIFI_CTRL);
 
-	spifi->nor.mtd   = &spifi->mtd;
 	spifi->nor.dev   = spifi->dev;
 	spifi->nor.priv  = spifi;
 	spifi->nor.read  = nxp_spifi_read;
@@ -364,7 +362,7 @@ static int nxp_spifi_setup_flash(struct nxp_spifi *spifi,
 	}
 
 	ppdata.of_node = np;
-	ret = mtd_device_parse_register(&spifi->mtd, NULL, &ppdata, NULL, 0);
+	ret = mtd_device_parse_register(&spifi->nor.mtd, NULL, &ppdata, NULL, 0);
 	if (ret) {
 		dev_err(spifi->dev, "mtd device parse failed\n");
 		return ret;
@@ -453,7 +451,7 @@ static int nxp_spifi_remove(struct platform_device *pdev)
 {
 	struct nxp_spifi *spifi = platform_get_drvdata(pdev);
 
-	mtd_device_unregister(&spifi->mtd);
+	mtd_device_unregister(&spifi->nor.mtd);
 	clk_disable_unprepare(spifi->clk_spifi);
 	clk_disable_unprepare(spifi->clk_reg);
 
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index d98180e73307..834a06049ca2 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -265,7 +265,7 @@ static int spi_nor_wait_till_ready(struct spi_nor *nor)
  */
 static int erase_chip(struct spi_nor *nor)
 {
-	dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd->size >> 10));
+	dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd.size >> 10));
 
 	return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0, 0);
 }
@@ -373,7 +373,7 @@ erase_err:
 
 static int stm_lock(struct spi_nor *nor, loff_t ofs, uint64_t len)
 {
-	struct mtd_info *mtd = nor->mtd;
+	struct mtd_info *mtd = &nor->mtd;
 	uint32_t offset = ofs;
 	uint8_t status_old, status_new;
 	int ret = 0;
@@ -407,7 +407,7 @@ static int stm_lock(struct spi_nor *nor, loff_t ofs, uint64_t len)
 
 static int stm_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len)
 {
-	struct mtd_info *mtd = nor->mtd;
+	struct mtd_info *mtd = &nor->mtd;
 	uint32_t offset = ofs;
 	uint8_t status_old, status_new;
 	int ret = 0;
@@ -1004,7 +1004,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode)
 {
 	const struct flash_info *info = NULL;
 	struct device *dev = nor->dev;
-	struct mtd_info *mtd = nor->mtd;
+	struct mtd_info *mtd = &nor->mtd;
 	struct device_node *np = dev->of_node;
 	int ret;
 	int i;
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 85a24baea093..495433d3f56d 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -162,7 +162,7 @@ struct mtd_info;
  * @priv:		the private data
  */
 struct spi_nor {
-	struct mtd_info		*mtd;
+	struct mtd_info		mtd;
 	struct mutex		lock;
 	struct device		*dev;
 	u32			page_size;
-- 
cgit v1.2.3


From e747dbe75e83345379455a78bb208ab7202229df Mon Sep 17 00:00:00 2001
From: Brian Norris <computersforpeace@gmail.com>
Date: Thu, 13 Aug 2015 15:46:02 -0700
Subject: mtd: fsl-quadspi: use automatic spi-nor detection

We don't really need the flash information from the device tree here.
Let's stick with autodetection here instead.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Han Xu <han.xu@freescale.com>
Tested-by: Han Xu <han.xu@freescale.com>
---
 drivers/mtd/spi-nor/fsl-quadspi.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

(limited to 'drivers/mtd/spi-nor/fsl-quadspi.c')

diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index 19f61783cb56..f28dcc1cd63f 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -1005,8 +1005,6 @@ static int fsl_qspi_probe(struct platform_device *pdev)
 
 	/* iterate the subnodes. */
 	for_each_available_child_of_node(dev->of_node, np) {
-		char modalias[40];
-
 		/* skip the holes */
 		if (!q->has_second_chip)
 			i *= 2;
@@ -1027,10 +1025,6 @@ static int fsl_qspi_probe(struct platform_device *pdev)
 		nor->prepare = fsl_qspi_prep;
 		nor->unprepare = fsl_qspi_unprep;
 
-		ret = of_modalias_node(np, modalias, sizeof(modalias));
-		if (ret < 0)
-			goto mutex_failed;
-
 		ret = of_property_read_u32(np, "spi-max-frequency",
 				&q->clk_rate);
 		if (ret < 0)
@@ -1039,7 +1033,7 @@ static int fsl_qspi_probe(struct platform_device *pdev)
 		/* set the chip address for READID */
 		fsl_qspi_set_base_addr(q, nor);
 
-		ret = spi_nor_scan(nor, modalias, SPI_NOR_QUAD);
+		ret = spi_nor_scan(nor, NULL, SPI_NOR_QUAD);
 		if (ret)
 			goto mutex_failed;
 
-- 
cgit v1.2.3


From 11bff0b70cc003b995cf4c2acec4adab90957b02 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Thu, 3 Sep 2015 18:35:36 +0200
Subject: mtd: spi-nor: Decouple SPI NOR's device_node from controller device

The problem this patch is trying to address is such, that SPI NOR flash
devices attached to a dedicated SPI NOR controller cannot read their
properties from the associated struct device_node.

A couple of facts first:
1) Each SPI NOR flash has a struct spi_nor associated with it.
2) Each SPI NOR flash has certain device properties associated
   with it, for example the OF property 'm25p,fast-read' is a
   good pick. These properties are used by the SPI NOR core to
   select which opcodes are sent to such SPI NOR flash. These
   properties are coming from spi_nor .dev->of_node .

The problem is, that for SPI NOR controllers, the struct spi_nor .dev
element points to the struct device of the SPI NOR controller, not the
SPI NOR flash. Therefore, the associated dev->of_node also is the
one of the controller and therefore the SPI NOR core code is trying to
parse the SPI NOR controller's properties, not the properties of the
SPI NOR flash.

Note: The m25p80 driver is not affected, because the controller and
      the flash are the same device, so the associated device_node
      of the controller and the flash are the same.

This patch adjusts the SPI NOR core such that the device_node is not
picked from spi_nor .dev directly, but from a new separate spi_nor
.flash_node element. This let's the SPI NOR controller drivers set up
a different spi_nor .flash_node element for each SPI NOR flash.

This patch also fixes the controller drivers to be compatible with
this modification and correctly set the spi_nor .flash_node element.

This patch is inspired by 5844feeaa4154d1c46d3462c7a4653d22356d8b4
mtd: nand: add common DT init code

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
 drivers/mtd/devices/m25p80.c      | 1 +
 drivers/mtd/spi-nor/fsl-quadspi.c | 1 +
 drivers/mtd/spi-nor/nxp-spifi.c   | 1 +
 drivers/mtd/spi-nor/spi-nor.c     | 2 +-
 include/linux/mtd/spi-nor.h       | 2 ++
 5 files changed, 6 insertions(+), 1 deletion(-)

(limited to 'drivers/mtd/spi-nor/fsl-quadspi.c')

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index b6bc9a2a5f87..05bf0d71abea 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -200,6 +200,7 @@ static int m25p_probe(struct spi_device *spi)
 	nor->read_reg = m25p80_read_reg;
 
 	nor->dev = &spi->dev;
+	nor->flash_node = spi->dev.of_node;
 	nor->priv = flash;
 
 	spi_set_drvdata(spi, flash);
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index f28dcc1cd63f..f72483247c75 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -1013,6 +1013,7 @@ static int fsl_qspi_probe(struct platform_device *pdev)
 		mtd = &nor->mtd;
 
 		nor->dev = dev;
+		nor->flash_node = np;
 		nor->priv = q;
 
 		/* fill the hooks */
diff --git a/drivers/mtd/spi-nor/nxp-spifi.c b/drivers/mtd/spi-nor/nxp-spifi.c
index 0f6b452574bd..ce7bf6b2916b 100644
--- a/drivers/mtd/spi-nor/nxp-spifi.c
+++ b/drivers/mtd/spi-nor/nxp-spifi.c
@@ -331,6 +331,7 @@ static int nxp_spifi_setup_flash(struct nxp_spifi *spifi,
 	writel(ctrl, spifi->io_base + SPIFI_CTRL);
 
 	spifi->nor.dev   = spifi->dev;
+	spifi->nor.flash_node = np;
 	spifi->nor.priv  = spifi;
 	spifi->nor.read  = nxp_spifi_read;
 	spifi->nor.write = nxp_spifi_write;
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 55c67a4ea231..22cca87db9ca 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -1005,7 +1005,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode)
 	const struct flash_info *info = NULL;
 	struct device *dev = nor->dev;
 	struct mtd_info *mtd = &nor->mtd;
-	struct device_node *np = dev->of_node;
+	struct device_node *np = nor->flash_node;
 	int ret;
 	int i;
 
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 495433d3f56d..6379e107f2e5 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -134,6 +134,7 @@ struct mtd_info;
  * @mtd:		point to a mtd_info structure
  * @lock:		the lock for the read/write/erase/lock/unlock operations
  * @dev:		point to a spi device, or a spi nor controller device.
+ * @flash_node:		point to a device node describing this flash instance.
  * @page_size:		the page size of the SPI NOR
  * @addr_width:		number of address bytes
  * @erase_opcode:	the opcode for erasing a sector
@@ -165,6 +166,7 @@ struct spi_nor {
 	struct mtd_info		mtd;
 	struct mutex		lock;
 	struct device		*dev;
+	struct device_node	*flash_node;
 	u32			page_size;
 	u8			addr_width;
 	u8			erase_opcode;
-- 
cgit v1.2.3


From f9f3ce835ddce3c669eee869253105f88819888b Mon Sep 17 00:00:00 2001
From: Jagan Teki <jteki@openedev.com>
Date: Wed, 19 Aug 2015 15:26:44 +0530
Subject: mtd: spi-nor: Zap unneeded write_enable from write_reg

The 'write_enable' argument is unused and unneeded, so remove it from
the API.

Signed-off-by: Jagan Teki <jteki@openedev.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Han Xu <han.xu@freescale.com>
[Brian: fixed for nxp-spifi.c]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
 drivers/mtd/devices/m25p80.c      |  3 +--
 drivers/mtd/spi-nor/fsl-quadspi.c |  3 +--
 drivers/mtd/spi-nor/nxp-spifi.c   |  3 +--
 drivers/mtd/spi-nor/spi-nor.c     | 16 ++++++++--------
 include/linux/mtd/spi-nor.h       |  3 +--
 5 files changed, 12 insertions(+), 16 deletions(-)

(limited to 'drivers/mtd/spi-nor/fsl-quadspi.c')

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 05bf0d71abea..4b5d7a4655fd 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -61,8 +61,7 @@ static int m25p_cmdsz(struct spi_nor *nor)
 	return 1 + nor->addr_width;
 }
 
-static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len,
-			int wr_en)
+static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
 {
 	struct m25p *flash = nor->priv;
 	struct spi_device *spi = flash->spi;
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index f72483247c75..2954f89fc8be 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -797,8 +797,7 @@ static int fsl_qspi_read_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
 	return 0;
 }
 
-static int fsl_qspi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len,
-			int write_enable)
+static int fsl_qspi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
 {
 	struct fsl_qspi *q = nor->priv;
 	int ret;
diff --git a/drivers/mtd/spi-nor/nxp-spifi.c b/drivers/mtd/spi-nor/nxp-spifi.c
index ce7bf6b2916b..9e82098ae644 100644
--- a/drivers/mtd/spi-nor/nxp-spifi.c
+++ b/drivers/mtd/spi-nor/nxp-spifi.c
@@ -149,8 +149,7 @@ static int nxp_spifi_read_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
 	return nxp_spifi_wait_for_cmd(spifi);
 }
 
-static int nxp_spifi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf,
-			       int len, int write_enable)
+static int nxp_spifi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
 {
 	struct nxp_spifi *spifi = nor->priv;
 	u32 cmd;
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 3694f6697344..8818d4325d20 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -145,7 +145,7 @@ static inline int spi_nor_read_dummy_cycles(struct spi_nor *nor)
 static inline int write_sr(struct spi_nor *nor, u8 val)
 {
 	nor->cmd_buf[0] = val;
-	return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1, 0);
+	return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1);
 }
 
 /*
@@ -154,7 +154,7 @@ static inline int write_sr(struct spi_nor *nor, u8 val)
  */
 static inline int write_enable(struct spi_nor *nor)
 {
-	return nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0, 0);
+	return nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0);
 }
 
 /*
@@ -162,7 +162,7 @@ static inline int write_enable(struct spi_nor *nor)
  */
 static inline int write_disable(struct spi_nor *nor)
 {
-	return nor->write_reg(nor, SPINOR_OP_WRDI, NULL, 0, 0);
+	return nor->write_reg(nor, SPINOR_OP_WRDI, NULL, 0);
 }
 
 static inline struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd)
@@ -188,7 +188,7 @@ static inline int set_4byte(struct spi_nor *nor, const struct flash_info *info,
 			write_enable(nor);
 
 		cmd = enable ? SPINOR_OP_EN4B : SPINOR_OP_EX4B;
-		status = nor->write_reg(nor, cmd, NULL, 0, 0);
+		status = nor->write_reg(nor, cmd, NULL, 0);
 		if (need_wren)
 			write_disable(nor);
 
@@ -196,7 +196,7 @@ static inline int set_4byte(struct spi_nor *nor, const struct flash_info *info,
 	default:
 		/* Spansion style */
 		nor->cmd_buf[0] = enable << 7;
-		return nor->write_reg(nor, SPINOR_OP_BRWR, nor->cmd_buf, 1, 0);
+		return nor->write_reg(nor, SPINOR_OP_BRWR, nor->cmd_buf, 1);
 	}
 }
 static inline int spi_nor_sr_ready(struct spi_nor *nor)
@@ -267,7 +267,7 @@ static int erase_chip(struct spi_nor *nor)
 {
 	dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd.size >> 10));
 
-	return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0, 0);
+	return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0);
 }
 
 static int spi_nor_lock_and_prep(struct spi_nor *nor, enum spi_nor_ops ops)
@@ -893,7 +893,7 @@ static int write_sr_cr(struct spi_nor *nor, u16 val)
 	nor->cmd_buf[0] = val & 0xff;
 	nor->cmd_buf[1] = (val >> 8);
 
-	return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 2, 0);
+	return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 2);
 }
 
 static int spansion_quad_enable(struct spi_nor *nor)
@@ -935,7 +935,7 @@ static int micron_quad_enable(struct spi_nor *nor)
 
 	/* set EVCR, enable quad I/O */
 	nor->cmd_buf[0] = val & ~EVCR_QUAD_EN_MICRON;
-	ret = nor->write_reg(nor, SPINOR_OP_WD_EVCR, nor->cmd_buf, 1, 0);
+	ret = nor->write_reg(nor, SPINOR_OP_WD_EVCR, nor->cmd_buf, 1);
 	if (ret < 0) {
 		dev_err(nor->dev, "error while writing EVCR register\n");
 		return ret;
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 6379e107f2e5..e9c912d73141 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -186,8 +186,7 @@ struct spi_nor {
 	int (*write_xfer)(struct spi_nor *nor, struct spi_nor_xfer_cfg *cfg,
 			  u8 *buf, size_t len);
 	int (*read_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);
-	int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len,
-			int write_enable);
+	int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);
 
 	int (*read)(struct spi_nor *nor, loff_t from,
 			size_t len, size_t *retlen, u_char *read_buf);
-- 
cgit v1.2.3


From a5c603a22bff27f3aea7e747af4229d75278f3ff Mon Sep 17 00:00:00 2001
From: Brian Norris <computersforpeace@gmail.com>
Date: Mon, 12 Oct 2015 13:35:15 -0700
Subject: mtd: fsl-quadspi: fix printk() format warning for size_t

Seen when compile-testing on non-32-bit arch:

    CC      drivers/mtd/spi-nor/fsl-quadspi.o
  drivers/mtd/spi-nor/fsl-quadspi.c: In function 'fsl_qspi_read':
  drivers/mtd/spi-nor/fsl-quadspi.c:873:2: warning: format '%d' expects argument of type 'int', but argument 6 has type 'size_t' [-Wformat=]
    dev_dbg(q->dev, "cmd [%x],read from 0x%p, len:%d\n",
    ^

Also drop the '0x' prefixing to the '%p' formatter, since %p already
knows how to format pointers appropriately.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Han xu <han.xu@freescale.com>
---
 drivers/mtd/spi-nor/fsl-quadspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/mtd/spi-nor/fsl-quadspi.c')

diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index 2954f89fc8be..ca259faf4591 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -868,7 +868,7 @@ static int fsl_qspi_read(struct spi_nor *nor, loff_t from,
 		}
 	}
 
-	dev_dbg(q->dev, "cmd [%x],read from 0x%p, len:%d\n",
+	dev_dbg(q->dev, "cmd [%x],read from %p, len:%zd\n",
 		cmd, q->ahb_addr + q->chip_base_addr + from - q->memmap_offs,
 		len);
 
-- 
cgit v1.2.3


From 01a3c625766328200de1656915007537739847aa Mon Sep 17 00:00:00 2001
From: Fabio Estevam <fabio.estevam@freescale.com>
Date: Wed, 14 Oct 2015 00:39:44 -0300
Subject: mtd: fsl-quadspi: Include <linux/sizes.h> to avoid build error

Building for x86 results in the following build errors:

   drivers/mtd/spi-nor/fsl-quadspi.c: In function 'fsl_qspi_init_lut':
>> drivers/mtd/spi-nor/fsl-quadspi.c:355:21: error: 'SZ_16M' undeclared (first use in this function)
     if (q->nor_size <= SZ_16M) {
                        ^
   drivers/mtd/spi-nor/fsl-quadspi.c:355:21: note: each undeclared identifier is reported only once for each function it appears in
   drivers/mtd/spi-nor/fsl-quadspi.c: In function 'fsl_qspi_read':
>> drivers/mtd/spi-nor/fsl-quadspi.c:208:27: error: 'SZ_4M' undeclared (first use in this function)
    #define QUADSPI_MIN_IOMAP SZ_4M
                              ^
>> drivers/mtd/spi-nor/fsl-quadspi.c:845:25: note: in expansion of macro 'QUADSPI_MIN_IOMAP'
      q->memmap_len = len > QUADSPI_MIN_IOMAP ? len : QUADSPI_MIN_IOMAP;

Explicitly include <linux/sizes.h> to fix the problem.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
 drivers/mtd/spi-nor/fsl-quadspi.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers/mtd/spi-nor/fsl-quadspi.c')

diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index ca259faf4591..dc383895792c 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -28,6 +28,7 @@
 #include <linux/mtd/spi-nor.h>
 #include <linux/mutex.h>
 #include <linux/pm_qos.h>
+#include <linux/sizes.h>
 
 /* Controller needs driver to swap endian */
 #define QUADSPI_QUIRK_SWAP_ENDIAN	(1 << 0)
-- 
cgit v1.2.3


From 04850c4d8613127a9b488321c0ad83bff7519311 Mon Sep 17 00:00:00 2001
From: Han Xu <b45815@freescale.com>
Date: Fri, 23 Oct 2015 13:18:28 -0500
Subject: mtd: fsl-quadspi: fix macro collision problems with READ/WRITE

Change the READ/WRITE to FSL_READ/FSL_WRITE to resolve any possible
namespace collisions with READ/WRITE macros (e.g., from <linux/fs.h>).

Problems have been seen, for example, on mips:

>> drivers/mtd/spi-nor/fsl-quadspi.c:186:5: error: 'LUT_0' undeclared (first use in this function)
      ((LUT_##ins) << INSTR0_SHIFT))
        ^
>> drivers/mtd/spi-nor/fsl-quadspi.c:188:30: note: in expansion of macro 'LUT0'

On SPARC:

drivers/mtd/spi-nor/fsl-quadspi.c: In function 'fsl_qspi_init_lut':
drivers/mtd/spi-nor/fsl-quadspi.c:369:1: error: 'LUT_0' undeclared (first use in this function)
drivers/mtd/spi-nor/fsl-quadspi.c:418:1: error: pasting "LUT_" and "(" does not give a valid preprocessing token
drivers/mtd/spi-nor/fsl-quadspi.c:418:2: error: implicit declaration of function 'LUT_'

And surely on others.

Fixes: d26a22d06708 ("mtd: fsl-quadspi: allow building for other ARCHes with COMPILE_TEST")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Han Xu <b45815@freescale.com>
[Brian: rewrote commit description]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
 drivers/mtd/spi-nor/fsl-quadspi.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

(limited to 'drivers/mtd/spi-nor/fsl-quadspi.c')

diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index dc383895792c..7b10ed413983 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -155,15 +155,15 @@
 #define LUT_MODE		4
 #define LUT_MODE2		5
 #define LUT_MODE4		6
-#define LUT_READ		7
-#define LUT_WRITE		8
+#define LUT_FSL_READ		7
+#define LUT_FSL_WRITE		8
 #define LUT_JMP_ON_CS		9
 #define LUT_ADDR_DDR		10
 #define LUT_MODE_DDR		11
 #define LUT_MODE2_DDR		12
 #define LUT_MODE4_DDR		13
-#define LUT_READ_DDR		14
-#define LUT_WRITE_DDR		15
+#define LUT_FSL_READ_DDR		14
+#define LUT_FSL_WRITE_DDR		15
 #define LUT_DATA_LEARN		16
 
 /*
@@ -366,7 +366,7 @@ static void fsl_qspi_init_lut(struct fsl_qspi *q)
 
 	writel(LUT0(CMD, PAD1, cmd) | LUT1(ADDR, PAD1, addrlen),
 			base + QUADSPI_LUT(lut_base));
-	writel(LUT0(DUMMY, PAD1, dummy) | LUT1(READ, PAD4, rxfifo),
+	writel(LUT0(DUMMY, PAD1, dummy) | LUT1(FSL_READ, PAD4, rxfifo),
 			base + QUADSPI_LUT(lut_base + 1));
 
 	/* Write enable */
@@ -387,11 +387,11 @@ static void fsl_qspi_init_lut(struct fsl_qspi *q)
 
 	writel(LUT0(CMD, PAD1, cmd) | LUT1(ADDR, PAD1, addrlen),
 			base + QUADSPI_LUT(lut_base));
-	writel(LUT0(WRITE, PAD1, 0), base + QUADSPI_LUT(lut_base + 1));
+	writel(LUT0(FSL_WRITE, PAD1, 0), base + QUADSPI_LUT(lut_base + 1));
 
 	/* Read Status */
 	lut_base = SEQID_RDSR * 4;
-	writel(LUT0(CMD, PAD1, SPINOR_OP_RDSR) | LUT1(READ, PAD1, 0x1),
+	writel(LUT0(CMD, PAD1, SPINOR_OP_RDSR) | LUT1(FSL_READ, PAD1, 0x1),
 			base + QUADSPI_LUT(lut_base));
 
 	/* Erase a sector */
@@ -410,17 +410,17 @@ static void fsl_qspi_init_lut(struct fsl_qspi *q)
 
 	/* READ ID */
 	lut_base = SEQID_RDID * 4;
-	writel(LUT0(CMD, PAD1, SPINOR_OP_RDID) | LUT1(READ, PAD1, 0x8),
+	writel(LUT0(CMD, PAD1, SPINOR_OP_RDID) | LUT1(FSL_READ, PAD1, 0x8),
 			base + QUADSPI_LUT(lut_base));
 
 	/* Write Register */
 	lut_base = SEQID_WRSR * 4;
-	writel(LUT0(CMD, PAD1, SPINOR_OP_WRSR) | LUT1(WRITE, PAD1, 0x2),
+	writel(LUT0(CMD, PAD1, SPINOR_OP_WRSR) | LUT1(FSL_WRITE, PAD1, 0x2),
 			base + QUADSPI_LUT(lut_base));
 
 	/* Read Configuration Register */
 	lut_base = SEQID_RDCR * 4;
-	writel(LUT0(CMD, PAD1, SPINOR_OP_RDCR) | LUT1(READ, PAD1, 0x1),
+	writel(LUT0(CMD, PAD1, SPINOR_OP_RDCR) | LUT1(FSL_READ, PAD1, 0x1),
 			base + QUADSPI_LUT(lut_base));
 
 	/* Write disable */
-- 
cgit v1.2.3