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[v11,4/4] HID: cp2112: Configure I2C Bus Speed from Firmware

Message ID 20240605-cp2112-dt-v11-4-d55f0f945a62@plexus.com (mailing list archive)
State New
Delegated to: Jiri Kosina
Headers show
Series Firmware Support for USB-HID Devices and CP2112 | expand

Commit Message

Danny Kaehn June 5, 2024, 11:12 p.m. UTC
Now that the I2C adapter on the CP2112 can have an associated firmware
node, set the bus speed based on firmware configuration

Signed-off-by: Danny Kaehn <danny.kaehn@plexus.com>
 drivers/hid/hid-cp2112.c | 4 ++++
 1 file changed, 4 insertions(+)
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diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index b78d81275065..547c2cbd410f 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -1213,6 +1213,7 @@  static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	struct cp2112_smbus_config_report config;
 	struct fwnode_handle *child;
 	struct gpio_irq_chip *girq;
+	struct i2c_timings timings;
 	const char *name;
 	u32 addr;
 	int ret;
@@ -1293,6 +1294,9 @@  static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
 		goto err_power_normal;
+	i2c_parse_fw_timings(&dev->adap.dev, &timings, true);
+	config.clock_speed = cpu_to_be32(timings.bus_freq_hz);
 	config.retry_time = cpu_to_be16(1);
 	ret = cp2112_hid_output(hdev, (u8 *)&config, sizeof(config),