diff mbox series

[v3,2/4] firmware: xilinx: Add version check for TRISTATE configuration

Message ID 20230731095026.3766675-3-sai.krishna.potthuri@amd.com (mailing list archive)
State New, archived
Headers show
Series pinctrl: pinctrl-zynqmp: Add tri-state configuration support | expand

Commit Message

Potthuri, Sai Krishna July 31, 2023, 9:50 a.m. UTC 
Support for configuring TRISTATE parameter is added in ZYNQMP PMUFW(Xilinx
ZynqMP Platform Management Firmware) Configuration Param Set version 2.0.
If the requested configuration is TRISTATE and platform is ZYNQMP then
check the version before requesting Xilinx firmware to set the
configuration.

Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>
Reviewed-by: Michal Simek <michal.simek@amd.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 9 +++++++++
 include/linux/firmware/xlnx-zynqmp.h | 2 ++
 2 files changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index e204e2866d74..e93b12ad0ddb 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -1148,6 +1148,15 @@  EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_get_config);
 int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
 				 u32 value)
 {
+	int ret;
+
+	if (pm_family_code == ZYNQMP_FAMILY_CODE &&
+	    param == PM_PINCTRL_CONFIG_TRI_STATE) {
+		ret = zynqmp_pm_feature(PM_PINCTRL_CONFIG_PARAM_SET);
+		if (ret < PM_PINCTRL_PARAM_SET_VERSION)
+			return -EOPNOTSUPP;
+	}
+
 	return zynqmp_pm_invoke_fn(PM_PINCTRL_CONFIG_PARAM_SET, pin,
 				   param, value, 0, NULL);
 }
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 075a8f7f1706..ac50eb98b17a 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -34,6 +34,8 @@ 
 /* PM API versions */
 #define PM_API_VERSION_2	2
 
+#define PM_PINCTRL_PARAM_SET_VERSION	2
+
 #define ZYNQMP_FAMILY_CODE 0x23
 #define VERSAL_FAMILY_CODE 0x26