summaryrefslogtreecommitdiff
path: root/drivers/firmware/imx/misc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/firmware/imx/misc.c')
-rw-r--r--drivers/firmware/imx/misc.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/firmware/imx/misc.c b/drivers/firmware/imx/misc.c
new file mode 100644
index 000000000000..97f5424dbac9
--- /dev/null
+++ b/drivers/firmware/imx/misc.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Copyright 2017~2018 NXP
+ * Author: Dong Aisheng <aisheng.dong@nxp.com>
+ *
+ * File containing client-side RPC functions for the MISC service. These
+ * function are ported to clients that communicate to the SC.
+ *
+ */
+
+#include <linux/firmware/imx/svc/misc.h>
+
+struct imx_sc_msg_req_misc_set_ctrl {
+ struct imx_sc_rpc_msg hdr;
+ u32 ctrl;
+ u32 val;
+ u16 resource;
+} __packed;
+
+struct imx_sc_msg_req_misc_get_ctrl {
+ struct imx_sc_rpc_msg hdr;
+ u32 ctrl;
+ u16 resource;
+} __packed;
+
+struct imx_sc_msg_resp_misc_get_ctrl {
+ struct imx_sc_rpc_msg hdr;
+ u32 val;
+} __packed;
+
+/*
+ * This function sets a miscellaneous control value.
+ *
+ * @param[in] ipc IPC handle
+ * @param[in] resource resource the control is associated with
+ * @param[in] ctrl control to change
+ * @param[in] val value to apply to the control
+ *
+ * @return Returns 0 for success and < 0 for errors.
+ */
+
+int imx_sc_misc_set_control(struct imx_sc_ipc *ipc, u32 resource,
+ u8 ctrl, u32 val)
+{
+ struct imx_sc_msg_req_misc_set_ctrl msg;
+ struct imx_sc_rpc_msg *hdr = &msg.hdr;
+
+ hdr->ver = IMX_SC_RPC_VERSION;
+ hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC;
+ hdr->func = (uint8_t)IMX_SC_MISC_FUNC_SET_CONTROL;
+ hdr->size = 4;
+
+ msg.ctrl = ctrl;
+ msg.val = val;
+ msg.resource = resource;
+
+ return imx_scu_call_rpc(ipc, &msg, true);
+}
+EXPORT_SYMBOL(imx_sc_misc_set_control);
+
+/*
+ * This function gets a miscellaneous control value.
+ *
+ * @param[in] ipc IPC handle
+ * @param[in] resource resource the control is associated with
+ * @param[in] ctrl control to get
+ * @param[out] val pointer to return the control value
+ *
+ * @return Returns 0 for success and < 0 for errors.
+ */
+
+int imx_sc_misc_get_control(struct imx_sc_ipc *ipc, u32 resource,
+ u8 ctrl, u32 *val)
+{
+ struct imx_sc_msg_req_misc_get_ctrl msg;
+ struct imx_sc_msg_resp_misc_get_ctrl *resp;
+ struct imx_sc_rpc_msg *hdr = &msg.hdr;
+ int ret;
+
+ hdr->ver = IMX_SC_RPC_VERSION;
+ hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC;
+ hdr->func = (uint8_t)IMX_SC_MISC_FUNC_GET_CONTROL;
+ hdr->size = 3;
+
+ msg.ctrl = ctrl;
+ msg.resource = resource;
+
+ ret = imx_scu_call_rpc(ipc, &msg, true);
+ if (ret)
+ return ret;
+
+ resp = (struct imx_sc_msg_resp_misc_get_ctrl *)&msg;
+ if (val != NULL)
+ *val = resp->val;
+
+ return 0;
+}
+EXPORT_SYMBOL(imx_sc_misc_get_control);