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Commit efe7d640 authored by Mika Westerberg's avatar Mika Westerberg Committed by Wolfram Sang
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i2c-designware: use dynamic adapter numbering on Lynxpoint 



It is not good idea to mix static and dynamic I2C adapter numbering. In
this particular case on Lynxpoint we had graphics I2C adapter which took
the first numbers preventing the designware I2C driver from using the
adapter numbers it preferred.

Since Lynxpoint support was just introduced and there is no hardware available
outside Intel we can fix this by switching to use dynamic adapter numbering
instead of static.

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 76cf3fc8

drivers/i2c/busses/i2c-designware-platdrv.c

+0 −9
Original line number Diff line number Diff line
@@ -56,20 +56,11 @@ static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev) 
static int dw_i2c_acpi_configure(struct platform_device *pdev)

{

	struct dw_i2c_dev *dev = platform_get_drvdata(pdev);

	struct acpi_device *adev;

	int busno, ret;



	if (!ACPI_HANDLE(&pdev->dev))

		return -ENODEV;



	ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);

	if (ret)

		return -ENODEV;



	dev->adapter.nr = -1;

	if (adev->pnp.unique_id && !kstrtoint(adev->pnp.unique_id, 0, &busno))

		dev->adapter.nr = busno;



	dev->tx_fifo_depth = 32;

	dev->rx_fifo_depth = 32;

	return 0;