Linux-mtd Archive on lore.kernel.org
 help / color / Atom feed
From: "Cédric Le Goater" <clg@kaod.org>
To: linux-mtd@lists.infradead.org,
	Tudor Ambarus <tudor.ambarus@microchip.com>
Cc: "Mark Rutland" <mark.rutland@arm.com>,
	"Vignesh Raghavendra" <vigneshr@ti.com>,
	linux-aspeed@lists.ozlabs.org, "Andrew Jeffery" <andrew@aj.id.au>,
	"Richard Weinberger" <richard@nod.at>,
	"Marek Vasut" <marek.vasut@gmail.com>,
	"Joel Stanley" <joel@jms.id.au>,
	"Miquel Raynal" <miquel.raynal@bootlin.com>,
	"Brian Norris" <computersforpeace@gmail.com>,
	"David Woodhouse" <dwmw2@infradead.org>,
	linux-arm-kernel@lists.infradead.org,
	"Cédric Le Goater" <clg@kaod.org>
Subject: [PATCH 09/16] mtd: spi-nor: aspeed: Introduce a field for the AHB physical address
Date: Fri,  4 Oct 2019 13:59:12 +0200
Message-ID: <20191004115919.20788-10-clg@kaod.org> (raw)
In-Reply-To: <20191004115919.20788-1-clg@kaod.org>

On the AST2600, we will use this field to compute the address of the
chip AHB window from the Segment Register value. It also removes the
need of aspeed_smc_ahb_base_phy() helper.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
---
 drivers/mtd/spi-nor/aspeed-smc.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/mtd/spi-nor/aspeed-smc.c b/drivers/mtd/spi-nor/aspeed-smc.c
index add95a9aca76..c5a0c8d94371 100644
--- a/drivers/mtd/spi-nor/aspeed-smc.c
+++ b/drivers/mtd/spi-nor/aspeed-smc.c
@@ -121,7 +121,8 @@ struct aspeed_smc_controller {
 	struct mutex mutex;			/* controller access mutex */
 	const struct aspeed_smc_info *info;	/* type info of controller */
 	void __iomem *regs;			/* controller registers */
-	void __iomem *ahb_base;			/* per-chip windows resource */
+	void __iomem *ahb_base;			/* per-chip window resource */
+	u32 ahb_base_phy;			/* phys addr of AHB window  */
 	u32 ahb_window_size;			/* full mapping window size */
 
 	unsigned long	clk_frequency;
@@ -533,21 +534,13 @@ static void __iomem *aspeed_smc_chip_base(struct aspeed_smc_chip *chip,
 	return controller->ahb_base + offset;
 }
 
-static u32 aspeed_smc_ahb_base_phy(struct aspeed_smc_controller *controller)
-{
-	u32 seg0_val = readl(SEGMENT_ADDR_REG(controller, 0));
-
-	return SEGMENT_ADDR_START(seg0_val);
-}
-
 static u32 chip_set_segment(struct aspeed_smc_chip *chip, u32 cs, u32 start,
 			    u32 size)
 {
 	struct aspeed_smc_controller *controller = chip->controller;
 	void __iomem *seg_reg;
-	u32 seg_oldval, seg_newval, ahb_base_phy, end;
-
-	ahb_base_phy = aspeed_smc_ahb_base_phy(controller);
+	u32 seg_oldval, seg_newval, end;
+	u32 ahb_base_phy = controller->ahb_base_phy;
 
 	seg_reg = SEGMENT_ADDR_REG(controller, cs);
 	seg_oldval = readl(seg_reg);
@@ -636,7 +629,7 @@ static u32 aspeed_smc_chip_set_segment(struct aspeed_smc_chip *chip)
 			 chip->cs, size >> 20);
 	}
 
-	ahb_base_phy = aspeed_smc_ahb_base_phy(controller);
+	ahb_base_phy = controller->ahb_base_phy;
 
 	/*
 	 * As a start address for the current segment, use the default
@@ -1158,6 +1151,7 @@ static int aspeed_smc_probe(struct platform_device *pdev)
 		return PTR_ERR(controller->regs);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	controller->ahb_base_phy = res->start;
 	controller->ahb_base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(controller->ahb_base))
 		return PTR_ERR(controller->ahb_base);
-- 
2.21.0


______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

  parent reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-04 11:59 [PATCH 00/16] mtd: spi-nor: aspeed: AST2600 support and extensions Cédric Le Goater
2019-10-04 11:59 ` [PATCH 01/16] mtd: spi-nor: aspeed: Use command mode for reads Cédric Le Goater
2019-10-04 11:59 ` [PATCH 02/16] mtd: spi-nor: aspeed: Add support for SPI dual IO read mode Cédric Le Goater
2019-10-04 11:59 ` [PATCH 03/16] mtd: spi-nor: aspeed: Link controller with the ahb clock Cédric Le Goater
2019-10-04 11:59 ` [PATCH 04/16] mtd: spi-nor: aspeed: Add read training Cédric Le Goater
2019-10-11 12:28   ` Boris Brezillon
2019-10-11 13:13     ` Vignesh Raghavendra
2019-10-11 14:03       ` Cédric Le Goater
2019-10-11 13:55     ` Cédric Le Goater
2019-10-11 14:29       ` Boris Brezillon
2019-10-11 14:37         ` Cédric Le Goater
2019-10-04 11:59 ` [PATCH 05/16] mtd: spi-nor: aspeed: Limit the maximum SPI frequency Cédric Le Goater
2019-10-04 11:59 ` [PATCH 06/16] mtd: spi-nor: fix options for mx66l51235f Cédric Le Goater
2019-10-04 16:23   ` Cédric Le Goater
2019-10-04 11:59 ` [PATCH 07/16] mtd: spi-nor: aspeed: Add support for the 4B opcodes Cédric Le Goater
2019-10-04 11:59 ` [PATCH 08/16] mtd: spi-nor: Add support for w25q512jv Cédric Le Goater
2019-10-04 11:59 ` Cédric Le Goater [this message]
2019-10-04 11:59 ` [PATCH 10/16] mtd: spi-nor: aspeed: Introduce segment operations Cédric Le Goater
2019-10-04 11:59 ` [PATCH 11/16] dt-bindings: mtd: aspeed-smc: Add new comptatible for AST2600 Cédric Le Goater
2019-10-15 19:26   ` Rob Herring
2019-10-04 11:59 ` [PATCH 12/16] mtd: spi-nor: aspeed: Add initial support for the AST2600 Cédric Le Goater
2019-10-04 11:59 ` [PATCH 13/16] mtd: spi-nor: aspeed: Check for disabled segments on " Cédric Le Goater
2019-10-04 12:09 ` [PATCH 14/16] mtd: spi-nor: aspeed: Introduce training operations per platform Cédric Le Goater
2019-10-04 12:09   ` [PATCH 15/16] mtd: spi-nor: aspeed: Introduce a HCLK mask for training Cédric Le Goater
2019-10-04 12:09   ` [PATCH 16/16] mtd: spi-nor: aspeed: Add read training support for the AST2600 Cédric Le Goater
2019-10-09 20:55 ` [PATCH 00/16] mtd: spi-nor: aspeed: AST2600 support and extensions Boris Brezillon
2019-10-10 23:47   ` Joel Stanley
2019-10-11  6:45     ` Boris Brezillon
2019-10-11  9:29       ` Cédric Le Goater
2019-10-11  9:51         ` Boris Brezillon
2019-10-11 11:47           ` Cédric Le Goater
2019-10-11 12:07             ` Boris Brezillon
2019-10-11 13:07               ` Cédric Le Goater
2019-10-11 14:01                 ` Boris Brezillon

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20191004115919.20788-10-clg@kaod.org \
    --to=clg@kaod.org \
    --cc=andrew@aj.id.au \
    --cc=computersforpeace@gmail.com \
    --cc=dwmw2@infradead.org \
    --cc=joel@jms.id.au \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-aspeed@lists.ozlabs.org \
    --cc=linux-mtd@lists.infradead.org \
    --cc=marek.vasut@gmail.com \
    --cc=mark.rutland@arm.com \
    --cc=miquel.raynal@bootlin.com \
    --cc=richard@nod.at \
    --cc=tudor.ambarus@microchip.com \
    --cc=vigneshr@ti.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-mtd Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-mtd/0 linux-mtd/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-mtd linux-mtd/ https://lore.kernel.org/linux-mtd \
		linux-mtd@lists.infradead.org
	public-inbox-index linux-mtd

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-mtd


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git