From: Sven Peter <sven@svenpeter.dev>
To: Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Olof Johansson <olof@lixom.net>
Cc: Arnd Bergmann <arnd@arndb.de>, Sven Peter <sven@svenpeter.dev>,
Hector Martin <marcan@marcan.st>,
linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Mohamed Mediouni <mohamed.mediouni@caramail.com>,
Stan Skowronek <stan@corellium.com>,
linuxppc-dev@lists.ozlabs.org,
Alyssa Rosenzweig <alyssa@rosenzweig.io>,
Mark Kettenis <mark.kettenis@xs4all.nl>
Subject: [PATCH 02/10] i2c: pasemi: Use io{read,write}32
Date: Sun, 26 Sep 2021 11:58:39 +0200 [thread overview]
Message-ID: <20210926095847.38261-3-sven@svenpeter.dev> (raw)
In-Reply-To: <20210926095847.38261-1-sven@svenpeter.dev>
In preparation for splitting this driver up into a platform_driver
and a pci_driver, replace outl/inl usage with ioport_map and
ioread32/iowrite32.
Signed-off-by: Sven Peter <sven@svenpeter.dev>
---
drivers/i2c/busses/i2c-pasemi.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c
index 20f2772c0e79..dd31d902a621 100644
--- a/drivers/i2c/busses/i2c-pasemi.c
+++ b/drivers/i2c/busses/i2c-pasemi.c
@@ -20,6 +20,7 @@ static struct pci_driver pasemi_smb_driver;
struct pasemi_smbus {
struct pci_dev *dev;
struct i2c_adapter adapter;
+ void __iomem *ioaddr;
unsigned long base;
int size;
};
@@ -53,13 +54,13 @@ static inline void reg_write(struct pasemi_smbus *smbus, int reg, int val)
{
dev_dbg(&smbus->dev->dev, "smbus write reg %lx val %08x\n",
smbus->base + reg, val);
- outl(val, smbus->base + reg);
+ iowrite32(val, smbus->ioaddr + reg);
}
static inline int reg_read(struct pasemi_smbus *smbus, int reg)
{
int ret;
- ret = inl(smbus->base + reg);
+ ret = ioread32(smbus->ioaddr + reg);
dev_dbg(&smbus->dev->dev, "smbus read reg %lx val %08x\n",
smbus->base + reg, ret);
return ret;
@@ -351,6 +352,12 @@ static int pasemi_smb_probe(struct pci_dev *dev,
goto out_kfree;
}
+ smbus->ioaddr = ioport_map(smbus->base, smbus->size);
+ if (!smbus->ioaddr) {
+ error = -EBUSY;
+ goto out_release_region;
+ }
+
smbus->adapter.owner = THIS_MODULE;
snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),
"PA Semi SMBus adapter at 0x%lx", smbus->base);
@@ -366,12 +373,14 @@ static int pasemi_smb_probe(struct pci_dev *dev,
error = i2c_add_adapter(&smbus->adapter);
if (error)
- goto out_release_region;
+ goto out_ioport_unmap;
pci_set_drvdata(dev, smbus);
return 0;
+ out_ioport_unmap:
+ ioport_unmap(smbus->ioaddr);
out_release_region:
release_region(smbus->base, smbus->size);
out_kfree:
@@ -384,6 +393,7 @@ static void pasemi_smb_remove(struct pci_dev *dev)
struct pasemi_smbus *smbus = pci_get_drvdata(dev);
i2c_del_adapter(&smbus->adapter);
+ ioport_unmap(smbus->ioaddr);
release_region(smbus->base, smbus->size);
kfree(smbus);
}
--
2.25.1
next prev parent reply other threads:[~2021-09-26 12:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-26 9:58 [PATCH 00/10] Add Apple M1 support to PASemi i2c driver Sven Peter
2021-09-26 9:58 ` [PATCH 01/10] dt-bindings: i2c: Add Apple I2C controller bindings Sven Peter
2021-10-04 18:01 ` Rob Herring
2021-09-26 9:58 ` Sven Peter [this message]
2021-09-27 7:39 ` [PATCH 02/10] i2c: pasemi: Use io{read,write}32 Arnd Bergmann
2021-09-28 15:48 ` Sven Peter
2021-09-26 9:58 ` [PATCH 03/10] i2c: pasemi: Remove usage of pci_dev Sven Peter
2021-09-26 9:58 ` [PATCH 04/10] i2c: pasemi: Split off common probing code Sven Peter
2021-09-26 9:58 ` [PATCH 05/10] i2c: pasemi: Split pci driver to its own file Sven Peter
2021-09-26 9:58 ` [PATCH 06/10] i2c: pasemi: Move common reset code to own function Sven Peter
2021-09-26 9:58 ` [PATCH 07/10] i2c: pasemi: Allow to configure bus frequency Sven Peter
2021-09-26 9:58 ` [PATCH 08/10] i2c: pasemi: Refactor _probe to use devm_* Sven Peter
2021-09-26 9:58 ` [PATCH 09/10] i2c: pasemi: Add Apple platform driver Sven Peter
2021-09-29 20:33 ` Wolfram Sang
2021-10-03 14:37 ` Sven Peter
2021-09-26 9:58 ` [PATCH 10/10] i2c: pasemi: Set enable bit for Apple variant Sven Peter
2021-09-27 7:42 ` [PATCH 00/10] Add Apple M1 support to PASemi i2c driver Arnd Bergmann
2021-09-29 20:35 ` Wolfram Sang
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