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authorArnd Bergmann <arnd@arndb.de>2018-10-10 13:46:19 +0200
committerArnd Bergmann <arnd@arndb.de>2018-10-10 13:47:06 +0200
commite4c080a10a23577303c0ef05c37c18661f758f34 (patch)
tree546133150e70de482d394bda623ba2ae75a48a55 /drivers/firmware
parentf7d87826fe482dbe4b0675f99c1eae2890a2d8fb (diff)
parent3fde0e16d016ecb273f0fa404b5d56b947fc0576 (diff)
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Merge tag 'zynqmp-soc-clk-for-v4.20' of https://github.com/Xilinx/linux-xlnx into next/drivers
arm64: zynqmp: SoC CLK changes for v4.20 This patchset adds CCF compliant clock driver for ZynqMP. Clock driver queries supported clock information from firmware and regiters pll and output clocks with CCF. * tag 'zynqmp-soc-clk-for-v4.20' of https://github.com/Xilinx/linux-xlnx: drivers: clk: Add ZynqMP clock driver dt-bindings: clock: Add bindings for ZynqMP clock driver firmware: xilinx: Add zynqmp IOCTL API for device control Documentation: xilinx: Add documentation for eemi APIs Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/firmware')
-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,
};
/**