[PATCH v1] i2c: designware: Add support to get I2C related timing parameters from firmware.

Sudarshan Ravula
2022-09-07T16:13:25Z

Similar to I2C designware platform driver add i2c_parse_fw_timings() in
PCI driver, to get I2C related timing parameters from firmware.

Signed-off-by: Sudarshan Ravula <sudarshan.ravula@intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/i2c/busses/i2c-designware-pcidrv.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index 608e61209455..c001719209be 100644
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -243,6 +243,7 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
int r;
struct dw_pci_controller *controller;
struct dw_scl_sda_cfg *cfg;
+ struct i2c_timings *t;

if (id->driver_data >= ARRAY_SIZE(dw_pci_controllers))
return dev_err_probe(&pdev->dev, -EINVAL,
@@ -272,12 +273,14 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
return r;

dev->get_clk_rate_khz = controller->get_clk_rate_khz;
- dev->timings.bus_freq_hz = I2C_MAX_FAST_MODE_FREQ;
dev->base = pcim_iomap_table(pdev)[0];
dev->dev = &pdev->dev;
dev->irq = pci_irq_vector(pdev, 0);
dev->flags |= controller->flags;

+ t = &dev->timings;
+ i2c_parse_fw_timings(&pdev->dev, t, false);
+
pci_set_drvdata(pdev, dev);

if (controller->setup) {
--
2.17.1