@@ -61,6 +61,10 @@
* @ss_lcnt: standard speed LCNT value
* @fs_hcnt: fast speed HCNT value
* @fs_lcnt: fast speed LCNT value
+ * @fp_hcnt: fast plus HCNT value
+ * @fp_lcnt: fast plus LCNT value
+ * @hs_hcnt: high speed HCNT value
+ * @hs_lcnt: high speed LCNT value
* @acquire_lock: function to acquire a hardware lock on the bus
* @release_lock: function to release a hardware lock on the bus
* @pm_runtime_disabled: true if pm runtime is disabled
@@ -104,6 +108,10 @@ struct dw_i2c_dev {
u16 ss_lcnt;
u16 fs_hcnt;
u16 fs_lcnt;
+ u16 fp_hcnt;
+ u16 fp_lcnt;
+ u16 hs_hcnt;
+ u16 hs_lcnt;
int (*acquire_lock)(struct dw_i2c_dev *dev);
void (*release_lock)(struct dw_i2c_dev *dev);
bool pm_runtime_disabled;
@@ -107,6 +107,8 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev)
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,
&dev->sda_hold_time);
+ dw_i2c_acpi_params(pdev, "FPCN", &dev->fp_hcnt, &dev->fp_lcnt, NULL);
+ dw_i2c_acpi_params(pdev, "HSCN", &dev->hs_hcnt, &dev->hs_lcnt, NULL);
id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
if (id && id->driver_data)
I2C designware controller can run at fast mode plus and high speed. This patch adds the capability to get the HCNT, LCNT configuration via FPCN (fast plus) and HSCN (high speed) ACPI method. Signed-off-by: Weifeng Voon <weifeng.voon@intel.com> --- drivers/i2c/busses/i2c-designware-core.h | 8 ++++++++ drivers/i2c/busses/i2c-designware-platdrv.c | 2 ++ 2 files changed, 10 insertions(+)