[PATCH v3 2/2] i2c: New bus driver for the Qualcomm QUP I2C controller
From: mark.rutland@arm.com (Mark Rutland)
Date: 2014-02-21 11:06:42
Also in:
linux-arm-msm, linux-devicetree, linux-i2c, lkml
On Fri, Feb 21, 2014 at 12:38:10AM +0000, Bjorn Andersson wrote:
quoted hunk ↗ jump to hunk
This bus driver supports the QUP i2c hardware controller in the Qualcomm SOCs. The Qualcomm Universal Peripheral Engine (QUP) is a general purpose data path engine with input/output FIFOs and an embedded i2c mini-core. The driver supports FIFO mode (for low bandwidth applications) and block mode (interrupt generated for each block-size data transfer). Cc: Andy Gross <redacted> Cc: Stephen Boyd <redacted> Signed-off-by: Ivan T. Ivanov <redacted> Signed-off-by: Bjorn Andersson <redacted> --- drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-qup.c | 772 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 783 insertions(+) create mode 100644 drivers/i2c/busses/i2c-qup.cdiff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index f5ed031..403e196 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig@@ -648,6 +648,16 @@ config I2C_PXA_SLAVE is necessary for systems where the PXA may be a target on the I2C bus.
[...]
+static const struct of_device_id qup_i2c_dt_match[] = {
+ { .compatible = "qcom,i2c-qup-v1.1.1" },
+ { .compatible = "qcom,i2c-qup-v2.1.1" },
+ { .compatible = "qcom,i2c-qup-v2.2.1" },The all seem to be handled the same. Are they all compatible with the "qcom,i2c-qup-v1.1.1" programming model, such that it could be used as a fallback in the compatible list (and the driver would only need to look for it for now)? Cheers, Mark.