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i2c: designware: reverts "i2c: designware: Add support for AMD I2C controller" 

The patch reverts commit a445900c90 (i2c: designware: Add support for
AMD I2C controller). It never worked anyhow because it did not register
a proper clkdev.

Since kernel 4.1 starts to support APD, there is no need to get freq
from id->driver_data for AMD0010. clkdev is supposed to be already
registered in APD.

So, revert old design and make AMD0010 looks like other ones.

Signed-off-by: Ken Xue <Ken.Xue@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Ken Xue 2015-10-23 13:28:47 +08:00 committed by Wolfram Sang
parent fa721baed6
commit 3eddad96c4
1 changed files with 1 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/i2c/busses/i2c-designware-platdrv.c
View File

@ -73,7 +73,6 @@ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[],
static int dw_i2c_acpi_configure(struct platform_device *pdev)
{
struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
const struct acpi_device_id *id;
dev->adapter.nr = -1;
dev->tx_fifo_depth = 32;
@ -87,29 +86,9 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev)
dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt,
&dev->sda_hold_time);
/*
* Provide a way for Designware I2C host controllers that are not
* based on Intel LPSS to specify their input clock frequency via
* id->driver_data.
*/
id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
if (id && id->driver_data)
clk_register_fixed_rate(&pdev->dev, dev_name(&pdev->dev), NULL,
CLK_IS_ROOT, id->driver_data);
return 0;
}
static void dw_i2c_acpi_unconfigure(struct platform_device *pdev)
{
struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
const struct acpi_device_id *id;
id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
if (id && id->driver_data)
clk_unregister(dev->clk);
}
static const struct acpi_device_id dw_i2c_acpi_match[] = {
{ "INT33C2", 0 },
{ "INT33C3", 0 },
@ -117,7 +96,7 @@ static const struct acpi_device_id dw_i2c_acpi_match[] = {
{ "INT3433", 0 },
{ "80860F41", 0 },
{ "808622C1", 0 },
{ "AMD0010", 133 * 1000 * 1000 },
{ "AMD0010", 0 },
{ }
};
MODULE_DEVICE_TABLE(acpi, dw_i2c_acpi_match);
@ -126,7 +105,6 @@ static inline int dw_i2c_acpi_configure(struct platform_device *pdev)
{
return -ENODEV;
}
static inline void dw_i2c_acpi_unconfigure(struct platform_device *pdev) { }
#endif
static int dw_i2c_plat_probe(struct platform_device *pdev)
@ -261,9 +239,6 @@ static int dw_i2c_plat_remove(struct platform_device *pdev)
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
if (has_acpi_companion(&pdev->dev))
dw_i2c_acpi_unconfigure(pdev);
return 0;
}