From: Linus Walleij <linus.walleij@linaro.org> To: Jens Axboe <axboe@kernel.dk>, linux-ide@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Imre Kaloz <kaloz@openwrt.org>, Krzysztof Halasa <khalasa@piap.pl>, Linus Walleij <linus.walleij@linaro.org> Subject: [PATCH 3/5] pata: ixp4xx: Refer to cmd and ctl rather than csN Date: Wed, 28 Jul 2021 11:02:40 +0200 [thread overview] Message-ID: <20210728090242.2758812-4-linus.walleij@linaro.org> (raw) In-Reply-To: <20210728090242.2758812-1-linus.walleij@linaro.org> The two "cs0" and "cs1" are "chip selects" but on some platforms such as GW2358 they are actually both in CS3 making this terminology very confusing. Call the addresses "cmd" and "ctl" after function instead. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- drivers/ata/pata_ixp4xx_cf.c | 27 ++++++++++---------- include/linux/platform_data/pata_ixp4xx_cf.h | 4 +-- 2 files changed, 15 insertions(+), 16 deletions(-) diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c index bc5029d6525d..72d6d6f2ef99 100644 --- a/drivers/ata/pata_ixp4xx_cf.c +++ b/drivers/ata/pata_ixp4xx_cf.c @@ -95,15 +95,14 @@ static struct ata_port_operations ixp4xx_port_ops = { static void ixp4xx_setup_port(struct ata_port *ap, struct ixp4xx_pata_data *data, - unsigned long raw_cs0, unsigned long raw_cs1) + unsigned long raw_cmd, unsigned long raw_ctl) { struct ata_ioports *ioaddr = &ap->ioaddr; - unsigned long raw_cmd = raw_cs0; - unsigned long raw_ctl = raw_cs1 + 0x06; - ioaddr->cmd_addr = data->cs0; - ioaddr->altstatus_addr = data->cs1 + 0x06; - ioaddr->ctl_addr = data->cs1 + 0x06; + raw_ctl += 0x06; + ioaddr->cmd_addr = data->cmd; + ioaddr->altstatus_addr = data->ctl + 0x06; + ioaddr->ctl_addr = data->ctl + 0x06; ata_sff_std_ports(ioaddr); @@ -135,7 +134,7 @@ static void ixp4xx_setup_port(struct ata_port *ap, static int ixp4xx_pata_probe(struct platform_device *pdev) { - struct resource *cs0, *cs1; + struct resource *cmd, *ctl; struct ata_host *host; struct ata_port *ap; struct device *dev = &pdev->dev; @@ -143,10 +142,10 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) int ret; int irq; - cs0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); - cs1 = platform_get_resource(pdev, IORESOURCE_MEM, 1); + cmd = platform_get_resource(pdev, IORESOURCE_MEM, 0); + ctl = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!cs0 || !cs1) + if (!cmd || !ctl) return -EINVAL; /* allocate host */ @@ -159,10 +158,10 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) if (ret) return ret; - data->cs0 = devm_ioremap(dev, cs0->start, 0x1000); - data->cs1 = devm_ioremap(dev, cs1->start, 0x1000); + data->cmd = devm_ioremap(dev, cmd->start, 0x1000); + data->ctl = devm_ioremap(dev, ctl->start, 0x1000); - if (!data->cs0 || !data->cs1) + if (!data->cmd || !data->ctl) return -ENOMEM; irq = platform_get_irq(pdev, 0); @@ -183,7 +182,7 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) ap->pio_mask = ATA_PIO4; ap->flags |= ATA_FLAG_NO_ATAPI; - ixp4xx_setup_port(ap, data, cs0->start, cs1->start); + ixp4xx_setup_port(ap, data, cmd->start, ctl->start); ata_print_version_once(dev, DRV_VERSION); diff --git a/include/linux/platform_data/pata_ixp4xx_cf.h b/include/linux/platform_data/pata_ixp4xx_cf.h index 601ba97fef57..e60fa41da4a5 100644 --- a/include/linux/platform_data/pata_ixp4xx_cf.h +++ b/include/linux/platform_data/pata_ixp4xx_cf.h @@ -14,8 +14,8 @@ struct ixp4xx_pata_data { volatile u32 *cs1_cfg; unsigned long cs0_bits; unsigned long cs1_bits; - void __iomem *cs0; - void __iomem *cs1; + void __iomem *cmd; + void __iomem *ctl; }; #endif -- 2.31.1
WARNING: multiple messages have this Message-ID (diff)
From: Linus Walleij <linus.walleij@linaro.org> To: Jens Axboe <axboe@kernel.dk>, linux-ide@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Imre Kaloz <kaloz@openwrt.org>, Krzysztof Halasa <khalasa@piap.pl>, Linus Walleij <linus.walleij@linaro.org> Subject: [PATCH 3/5] pata: ixp4xx: Refer to cmd and ctl rather than csN Date: Wed, 28 Jul 2021 11:02:40 +0200 [thread overview] Message-ID: <20210728090242.2758812-4-linus.walleij@linaro.org> (raw) In-Reply-To: <20210728090242.2758812-1-linus.walleij@linaro.org> The two "cs0" and "cs1" are "chip selects" but on some platforms such as GW2358 they are actually both in CS3 making this terminology very confusing. Call the addresses "cmd" and "ctl" after function instead. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- drivers/ata/pata_ixp4xx_cf.c | 27 ++++++++++---------- include/linux/platform_data/pata_ixp4xx_cf.h | 4 +-- 2 files changed, 15 insertions(+), 16 deletions(-) diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c index bc5029d6525d..72d6d6f2ef99 100644 --- a/drivers/ata/pata_ixp4xx_cf.c +++ b/drivers/ata/pata_ixp4xx_cf.c @@ -95,15 +95,14 @@ static struct ata_port_operations ixp4xx_port_ops = { static void ixp4xx_setup_port(struct ata_port *ap, struct ixp4xx_pata_data *data, - unsigned long raw_cs0, unsigned long raw_cs1) + unsigned long raw_cmd, unsigned long raw_ctl) { struct ata_ioports *ioaddr = &ap->ioaddr; - unsigned long raw_cmd = raw_cs0; - unsigned long raw_ctl = raw_cs1 + 0x06; - ioaddr->cmd_addr = data->cs0; - ioaddr->altstatus_addr = data->cs1 + 0x06; - ioaddr->ctl_addr = data->cs1 + 0x06; + raw_ctl += 0x06; + ioaddr->cmd_addr = data->cmd; + ioaddr->altstatus_addr = data->ctl + 0x06; + ioaddr->ctl_addr = data->ctl + 0x06; ata_sff_std_ports(ioaddr); @@ -135,7 +134,7 @@ static void ixp4xx_setup_port(struct ata_port *ap, static int ixp4xx_pata_probe(struct platform_device *pdev) { - struct resource *cs0, *cs1; + struct resource *cmd, *ctl; struct ata_host *host; struct ata_port *ap; struct device *dev = &pdev->dev; @@ -143,10 +142,10 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) int ret; int irq; - cs0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); - cs1 = platform_get_resource(pdev, IORESOURCE_MEM, 1); + cmd = platform_get_resource(pdev, IORESOURCE_MEM, 0); + ctl = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!cs0 || !cs1) + if (!cmd || !ctl) return -EINVAL; /* allocate host */ @@ -159,10 +158,10 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) if (ret) return ret; - data->cs0 = devm_ioremap(dev, cs0->start, 0x1000); - data->cs1 = devm_ioremap(dev, cs1->start, 0x1000); + data->cmd = devm_ioremap(dev, cmd->start, 0x1000); + data->ctl = devm_ioremap(dev, ctl->start, 0x1000); - if (!data->cs0 || !data->cs1) + if (!data->cmd || !data->ctl) return -ENOMEM; irq = platform_get_irq(pdev, 0); @@ -183,7 +182,7 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) ap->pio_mask = ATA_PIO4; ap->flags |= ATA_FLAG_NO_ATAPI; - ixp4xx_setup_port(ap, data, cs0->start, cs1->start); + ixp4xx_setup_port(ap, data, cmd->start, ctl->start); ata_print_version_once(dev, DRV_VERSION); diff --git a/include/linux/platform_data/pata_ixp4xx_cf.h b/include/linux/platform_data/pata_ixp4xx_cf.h index 601ba97fef57..e60fa41da4a5 100644 --- a/include/linux/platform_data/pata_ixp4xx_cf.h +++ b/include/linux/platform_data/pata_ixp4xx_cf.h @@ -14,8 +14,8 @@ struct ixp4xx_pata_data { volatile u32 *cs1_cfg; unsigned long cs0_bits; unsigned long cs1_bits; - void __iomem *cs0; - void __iomem *cs1; + void __iomem *cmd; + void __iomem *ctl; }; #endif -- 2.31.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-07-28 9:04 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-28 9:02 [PATCH 0/5] Update and rewrite IXP4xx PATA driver Linus Walleij 2021-07-28 9:02 ` Linus Walleij 2021-07-28 9:02 ` [PATCH 1/5] pata: ixp4xx: Use local dev variable Linus Walleij 2021-07-28 9:02 ` Linus Walleij 2021-07-28 9:02 ` [PATCH 2/5] pata: ixp4xx: Use IS_ENABLED() to determine endianness Linus Walleij 2021-07-28 9:02 ` Linus Walleij 2021-07-28 9:02 ` Linus Walleij [this message] 2021-07-28 9:02 ` [PATCH 3/5] pata: ixp4xx: Refer to cmd and ctl rather than csN Linus Walleij 2021-07-28 9:02 ` [PATCH 4/5] pata: ixp4xx: Add DT bindings Linus Walleij 2021-07-28 9:02 ` Linus Walleij 2021-07-28 16:14 ` Rob Herring 2021-07-28 16:14 ` Rob Herring 2021-07-28 9:02 ` [PATCH 5/5] pata: ixp4xx: Rewrite to use device tree Linus Walleij 2021-07-28 9:02 ` Linus Walleij
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