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authorMika Westerberg <mika.westerberg@linux.intel.com>2014-09-30 14:04:53 +0400
committerWolfram Sang <wsa@the-dreams.de>2014-10-06 21:49:28 +0400
commit0b26c845dfd554dd9030efbf0249d3830251e58b (patch)
treebdc552dfb83b4320ef4e5c1f8d0141050d902a47 /drivers/i2c
parent08678b850cd0c49cc49c7fed0c93f720f85368e8 (diff)
downloadlinux-0b26c845dfd554dd9030efbf0249d3830251e58b.tar.xz
i2c: designware: Default to fast mode in case of ACPI
There is no way in ACPI to tell in which speed the host controller is supposed to run, so we default to fast mode (400KHz). Since this has been the default all the time there should be no functional changes with this change. This is the first step required to refactor the driver probe so that we can supply source clock from ACPI part of the driver to the core. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-designware-platdrv.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 4d6a6b94e2fa..353adc4dc583 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -80,7 +80,6 @@ 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);
- bool fs_mode = dev->master_cfg & DW_IC_CON_SPEED_FAST;
if (!ACPI_HANDLE(&pdev->dev))
return -ENODEV;
@@ -93,10 +92,9 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev)
* Try to get SDA hold time and *CNT values from an ACPI method if
* it exists for both supported speed modes.
*/
- dw_i2c_acpi_params(pdev, "SSCN", &dev->ss_hcnt, &dev->ss_lcnt,
- fs_mode ? NULL : &dev->sda_hold_time);
+ dw_i2c_acpi_params(pdev, "SSCN", &dev->ss_hcnt, &dev->ss_lcnt, NULL);
dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt,
- fs_mode ? &dev->sda_hold_time : NULL);
+ &dev->sda_hold_time);
return 0;
}