[PATCH v10 03/10] firmware: xilinx: Add zynqmp IOCTL API for device control
From: Jolly Shah <hidden>
Date: 2018-07-17 19:59:47
Also in:
linux-arm-kernel, linux-devicetree, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Rajan Vaja <redacted> Add ZynqMP firmware IOCTL API to control and configure devices like PLLs, SD, Gem, etc. Signed-off-by: Rajan Vaja <redacted> Signed-off-by: Jolly Shah <redacted> --- drivers/firmware/xilinx/zynqmp.c | 20 ++++++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 2 ++ 2 files changed, 22 insertions(+)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index edbb84e..24cfd9e 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c@@ -241,8 +241,28 @@ static int get_set_conduit_method(struct device_node *np) return 0; } +/** + * zynqmp_pm_ioctl() - PM IOCTL API for device control and configs + * @node_id: Node ID of the device + * @ioctl_id: ID of the requested IOCTL + * @arg1: Argument 1 to requested IOCTL call + * @arg2: Argument 2 to requested IOCTL call + * @out: Returned output value + * + * This function calls IOCTL to firmware for device control and configuration. + * + * Return: Returns status, either success or error+reason + */ +static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, + u32 *out) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, ioctl_id, + arg1, arg2, out); +} + static const struct zynqmp_eemi_ops eemi_ops = { .get_api_version = zynqmp_pm_get_api_version, + .ioctl = zynqmp_pm_ioctl, }; /**
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index cb63bed..2eec6e7 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h@@ -34,6 +34,7 @@ enum pm_api_id { PM_GET_API_VERSION = 1, + PM_IOCTL = 34, }; /* PMU-FW return status codes */
@@ -49,6 +50,7 @@ enum pm_ret_status { struct zynqmp_eemi_ops { int (*get_api_version)(u32 *version); + int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out); }; #if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)
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2.7.4