[PATCH v2 02/11] i2c: pasemi: Use io{read,write}32

Sven Peter
2021-10-08T16:36:28Z

In preparation for splitting this driver up into a platform_driver
and a pci_driver, replace outl/inl usage with pci_iomap and
ioread32/iowrite32.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
---
v1 -> v2: replaced ioport_map with pci_iomap

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..39fcc584264a 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 = pci_iomap(dev, 0, 0);
+ 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:
+ pci_iounmap(dev, 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);
+ pci_iounmap(dev, smbus->ioaddr);
release_region(smbus->base, smbus->size);
kfree(smbus);
}
--
2.25.1