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| author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2020-05-28 12:33:20 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2020-05-30 23:03:06 +0200 |
| commit | b7c3d0777808cd7b5cee6078bd0ef51e82bd3db9 (patch) | |
| tree | b58b617b17d141c97be3ce741a8c141e8793adcc /drivers/i2c | |
| parent | fac25d7aaa03c4b5e11c7b7c1e286f85d21e008a (diff) | |
| download | lwn-b7c3d0777808cd7b5cee6078bd0ef51e82bd3db9.tar.gz lwn-b7c3d0777808cd7b5cee6078bd0ef51e82bd3db9.zip | |
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>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-platdrv.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 38657d821c72..9d467fa0e163 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -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); |