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i2c: designware: Move reg-space remapping into a dedicated function 

This is a preparation patch before adding a quirk with custom registers
map creation required for the Baikal-T1 System I2C support.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Serge Semin 2020-05-28 12:33:20 +03:00 committed by Wolfram Sang
parent fac25d7aaa
commit b7c3d07778
1 changed files with 13 additions and 5 deletions
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18
drivers/i2c/busses/i2c-designware-platdrv.c
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@ -108,6 +108,15 @@ static void dw_i2c_plat_pm_cleanup(struct dw_i2c_dev *dev)
pm_runtime_put_noidle(dev->dev);
}
static int dw_i2c_plat_request_regs(struct dw_i2c_dev *dev)
{
struct platform_device *pdev = to_platform_device(dev->dev);
dev->base = devm_platform_ioremap_resource(pdev, 0);
return PTR_ERR_OR_ZERO(dev->base);
}
static int dw_i2c_plat_probe(struct platform_device *pdev)
{
struct dw_i2c_platform_data *pdata = dev_get_platdata(&pdev->dev);
@ -125,15 +134,14 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
return -ENOMEM;
dev->flags = (uintptr_t)device_get_match_data(&pdev->dev);
dev->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(dev->base))
return PTR_ERR(dev->base);
dev->dev = &pdev->dev;
dev->irq = irq;
platform_set_drvdata(pdev, dev);
ret = dw_i2c_plat_request_regs(dev);
if (ret)
return ret;
dev->rst = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);
if (IS_ERR(dev->rst))
return PTR_ERR(dev->rst);