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authorRajan Vaja <rajan.vaja@xilinx.com>2018-10-08 11:21:44 -0700
committerMichal Simek <michal.simek@xilinx.com>2018-10-09 13:26:21 +0200
commit3b0296b8c893adb17b422179b9e779e4c32aa347 (patch)
tree81fe6d6d0ff3a833097c5cfe11442a4037bf7b07 /drivers/firmware/xilinx
parent8cc7bc8ee21f539ffabf4ff7f30a0c6be9ac5ba9 (diff)
downloadlinux-3b0296b8c893adb17b422179b9e779e4c32aa347.tar.bz2
firmware: xilinx: Add zynqmp IOCTL API for device control
Add ZynqMP firmware IOCTL API to control and configure devices like PLLs, SD, Gem, etc. Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com> Signed-off-by: Jolly Shah <jollys@xilinx.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers/firmware/xilinx')
-rw-r--r--drivers/firmware/xilinx/zynqmp.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 84b3fd2eca8b..9a1c72a9280f 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -428,6 +428,47 @@ static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
return ret;
}
+/**
+ * zynqmp_is_valid_ioctl() - Check whether IOCTL ID is valid or not
+ * @ioctl_id: IOCTL ID
+ *
+ * Return: 1 if IOCTL is valid else 0
+ */
+static inline int zynqmp_is_valid_ioctl(u32 ioctl_id)
+{
+ switch (ioctl_id) {
+ case IOCTL_SET_PLL_FRAC_MODE:
+ case IOCTL_GET_PLL_FRAC_MODE:
+ case IOCTL_SET_PLL_FRAC_DATA:
+ case IOCTL_GET_PLL_FRAC_DATA:
+ return 1;
+ default:
+ 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)
+{
+ if (!zynqmp_is_valid_ioctl(ioctl_id))
+ return -EINVAL;
+
+ 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,
.query_data = zynqmp_pm_query_data,
@@ -440,6 +481,7 @@ static const struct zynqmp_eemi_ops eemi_ops = {
.clock_getrate = zynqmp_pm_clock_getrate,
.clock_setparent = zynqmp_pm_clock_setparent,
.clock_getparent = zynqmp_pm_clock_getparent,
+ .ioctl = zynqmp_pm_ioctl,
};
/**