linux-kernel - [PATCH v3 6/6] i2c: qcom-geni: add support for I2C Master Hub variant

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 29 Nov 2022 15:47:06 +0100
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-i2c@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v3 6/6] i2c: qcom-geni: add support for I2C Master Hub variant

The I2C Master Hub is a stripped down version of the GENI Serial Engine
QUP Wrapper Controller but only supporting I2C serial engines without
DMA support.

Add the I2C Master Hub serial engine compatible along the specific
requirements in a new desc struct passed through the device match data.

Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/i2c/busses/i2c-qcom-geni.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
index 75dd0718c5a1..bfe75038bc14 100644
--- a/drivers/i2c/busses/i2c-qcom-geni.c
+++ b/drivers/i2c/busses/i2c-qcom-geni.c
@@ -1026,8 +1026,16 @@ static const struct dev_pm_ops geni_i2c_pm_ops = {
 									NULL)
 };
 
+const struct geni_i2c_desc i2c_master_hub = {
+	.has_core_clk = true,
+	.icc_ddr = NULL,
+	.no_dma_support = true,
+	.tx_fifo_depth = 16,
+};
+
 static const struct of_device_id geni_i2c_dt_match[] = {
 	{ .compatible = "qcom,geni-i2c" },
+	{ .compatible = "qcom,geni-i2c-master-hub", .data = &i2c_master_hub },
 	{}
 };
 MODULE_DEVICE_TABLE(of, geni_i2c_dt_match);

-- 
b4 0.10.1