misc: imx8: add scfw api impementation

Add clk/misc/pad/pm/rm scfw api implementaion for different
drivers to invoke. The low level code is using misc_call
to invoke imx8_scu driver.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>

diff --git a/arch/arm/include/asm/arch-imx8/sci/sci.h b/arch/arm/include/asm/arch-imx8/sci/sci.h
index d0ff5c5c41d7ef4d9cc64983064d22cd0d8756bf..d1621669e2eb9fb5e1c7883df5ecd57182378b3f 100644 (file)
--- a/arch/arm/include/asm/arch-imx8/sci/sci.h
+++ b/arch/arm/include/asm/arch-imx8/sci/sci.h
@@ -55,4 +55,34 @@ static inline int sc_err_to_linux(sc_err_t err)
        return ret;
 }
 
+/* PM API*/
+int sc_pm_set_resource_power_mode(sc_ipc_t ipc, sc_rsrc_t resource,
+                                 sc_pm_power_mode_t mode);
+int sc_pm_set_clock_rate(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk,
+                        sc_pm_clock_rate_t *rate);
+int sc_pm_get_clock_rate(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk,
+                        sc_pm_clock_rate_t *rate);
+int sc_pm_set_clock_rate(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk,
+                        sc_pm_clock_rate_t *rate);
+int sc_pm_get_clock_rate(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk,
+                        sc_pm_clock_rate_t *rate);
+int sc_pm_clock_enable(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk,
+                      sc_bool_t enable, sc_bool_t autog);
+
+/* MISC API */
+int sc_misc_get_control(sc_ipc_t ipc, sc_rsrc_t resource, sc_ctrl_t ctrl,
+                       u32 *val);
+void sc_misc_get_boot_dev(sc_ipc_t ipc, sc_rsrc_t *boot_dev);
+void sc_misc_boot_status(sc_ipc_t ipc, sc_misc_boot_status_t status);
+void sc_misc_build_info(sc_ipc_t ipc, u32 *build, u32 *commit);
+int sc_misc_otp_fuse_read(sc_ipc_t ipc, u32 word, u32 *val);
+
+/* RM API */
+sc_bool_t sc_rm_is_memreg_owned(sc_ipc_t ipc, sc_rm_mr_t mr);
+int sc_rm_get_memreg_info(sc_ipc_t ipc, sc_rm_mr_t mr, sc_faddr_t *addr_start,
+                         sc_faddr_t *addr_end);
+sc_bool_t sc_rm_is_resource_owned(sc_ipc_t ipc, sc_rsrc_t resource);
+
+/* PAD API */
+int sc_pad_set(sc_ipc_t ipc, sc_pad_t pad, u32 val);
 #endif

diff --git a/drivers/misc/imx8/Makefile b/drivers/misc/imx8/Makefile
index 3395340d22b55079bc6701fa8c1d4a895fb9c0e7..ee05893cbb1bdc8b67e0adc6b196e24979438322 100644 (file)
--- a/drivers/misc/imx8/Makefile
+++ b/drivers/misc/imx8/Makefile
@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0+
 
-obj-y += scu.o
+obj-y += scu_api.o scu.o

diff --git a/drivers/misc/imx8/scu_api.c b/drivers/misc/imx8/scu_api.c
new file mode 100644 (file)
index 0000000..65080d7
--- /dev/null
+++ b/drivers/misc/imx8/scu_api.c
@@ -0,0 +1,367 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2018 NXP
+ *
+ * Peng Fan <peng.fan@nxp.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <dm.h>
+#include <asm/arch/sci/sci.h>
+#include <misc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* CLK and PM */
+int sc_pm_set_clock_rate(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk,
+                        sc_pm_clock_rate_t *rate)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_PM;
+       RPC_FUNC(&msg) = (u8)PM_FUNC_SET_CLOCK_RATE;
+       RPC_U32(&msg, 0U) = *(u32 *)rate;
+       RPC_U16(&msg, 4U) = (u16)resource;
+       RPC_U8(&msg, 6U) = (u8)clk;
+       RPC_SIZE(&msg) = 3U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret)
+               printf("%s: rate:%u resource:%u: clk:%u res:%d\n",
+                      __func__, *rate, resource, clk, RPC_R8(&msg));
+
+       *rate = RPC_U32(&msg, 0U);
+
+       return ret;
+}
+
+int sc_pm_get_clock_rate(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk,
+                        sc_pm_clock_rate_t *rate)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_PM;
+       RPC_FUNC(&msg) = (u8)PM_FUNC_GET_CLOCK_RATE;
+       RPC_U16(&msg, 0U) = (u16)resource;
+       RPC_U8(&msg, 2U) = (u8)clk;
+       RPC_SIZE(&msg) = 2U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret) {
+               printf("%s: resource:%d clk:%d: res:%d\n",
+                      __func__, resource, clk, RPC_R8(&msg));
+               return ret;
+       }
+
+       if (rate)
+               *rate = RPC_U32(&msg, 0U);
+
+       return 0;
+}
+
+int sc_pm_clock_enable(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk,
+                      sc_bool_t enable, sc_bool_t autog)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_PM;
+       RPC_FUNC(&msg) = (u8)PM_FUNC_CLOCK_ENABLE;
+       RPC_U16(&msg, 0U) = (u16)resource;
+       RPC_U8(&msg, 2U) = (u8)clk;
+       RPC_U8(&msg, 3U) = (u8)enable;
+       RPC_U8(&msg, 4U) = (u8)autog;
+       RPC_SIZE(&msg) = 3U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret)
+               printf("%s: resource:%d clk:%d: enable:%d autog: %d, res:%d\n",
+                      __func__, resource, clk, enable, autog, RPC_R8(&msg));
+
+       return ret;
+}
+
+int sc_pm_set_resource_power_mode(sc_ipc_t ipc, sc_rsrc_t resource,
+                                 sc_pm_power_mode_t mode)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_PM;
+       RPC_FUNC(&msg) = (u8)PM_FUNC_SET_RESOURCE_POWER_MODE;
+       RPC_U16(&msg, 0U) = (u16)resource;
+       RPC_U8(&msg, 2U) = (u8)mode;
+       RPC_SIZE(&msg) = 2U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret)
+               printf("%s: resource:%d mode:%d: res:%d\n",
+                      __func__, resource, mode, RPC_R8(&msg));
+
+       return ret;
+}
+
+/* PAD */
+int sc_pad_set(sc_ipc_t ipc, sc_pad_t pad, u32 val)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_PAD;
+       RPC_FUNC(&msg) = (u8)PAD_FUNC_SET;
+       RPC_U32(&msg, 0U) = (u32)val;
+       RPC_U16(&msg, 4U) = (u16)pad;
+       RPC_SIZE(&msg) = 3U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret)
+               printf("%s: val:%d pad:%d: res:%d\n",
+                      __func__, val, pad, RPC_R8(&msg));
+
+       return ret;
+}
+
+/* MISC */
+int sc_misc_get_control(sc_ipc_t ipc, sc_rsrc_t resource, sc_ctrl_t ctrl,
+                       u32 *val)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_MISC;
+       RPC_FUNC(&msg) = (u8)MISC_FUNC_GET_CONTROL;
+       RPC_U32(&msg, 0U) = (u32)ctrl;
+       RPC_U16(&msg, 4U) = (u16)resource;
+       RPC_SIZE(&msg) = 3U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret)
+               printf("%s: ctrl:%d resource:%d: res:%d\n",
+                      __func__, ctrl, resource, RPC_R8(&msg));
+
+       if (!val)
+               *val = RPC_U32(&msg, 0U);
+
+       return ret;
+}
+
+void sc_misc_get_boot_dev(sc_ipc_t ipc, sc_rsrc_t *boot_dev)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_MISC;
+       RPC_FUNC(&msg) = (u8)MISC_FUNC_GET_BOOT_DEV;
+       RPC_SIZE(&msg) = 1U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret)
+               printf("%s: res:%d\n", __func__, RPC_R8(&msg));
+
+       if (!boot_dev)
+               *boot_dev = RPC_U16(&msg, 0U);
+}
+
+void sc_misc_boot_status(sc_ipc_t ipc, sc_misc_boot_status_t status)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_MISC;
+       RPC_FUNC(&msg) = (u8)MISC_FUNC_BOOT_STATUS;
+       RPC_U8(&msg, 0U) = (u8)status;
+       RPC_SIZE(&msg) = 2U;
+
+       ret = misc_call(dev, SC_TRUE, &msg, size, &msg, size);
+       if (ret)
+               printf("%s: status:%d res:%d\n",
+                      __func__, status, RPC_R8(&msg));
+}
+
+void sc_misc_build_info(sc_ipc_t ipc, u32 *build, u32 *commit)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = SC_RPC_SVC_MISC;
+       RPC_FUNC(&msg) = MISC_FUNC_BUILD_INFO;
+       RPC_SIZE(&msg) = 1;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret < 0) {
+               printf("%s: err: %d\n", __func__, ret);
+               return;
+       }
+
+       if (build)
+               *build = RPC_U32(&msg, 0);
+       if (commit)
+               *commit = RPC_U32(&msg, 4);
+}
+
+int sc_misc_otp_fuse_read(sc_ipc_t ipc, u32 word, u32 *val)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = SC_RPC_SVC_MISC;
+       RPC_FUNC(&msg) = MISC_FUNC_OTP_FUSE_READ;
+       RPC_U32(&msg, 0) = word;
+       RPC_SIZE(&msg) = 2;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret < 0)
+               return ret;
+
+       if (val)
+               *val = RPC_U32(&msg, 0U);
+
+       return 0;
+}
+
+/* RM */
+sc_bool_t sc_rm_is_memreg_owned(sc_ipc_t ipc, sc_rm_mr_t mr)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+       sc_err_t result;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_RM;
+       RPC_FUNC(&msg) = (u8)RM_FUNC_IS_MEMREG_OWNED;
+       RPC_U8(&msg, 0U) = (u8)mr;
+       RPC_SIZE(&msg) = 2U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       result = RPC_R8(&msg);
+
+       if (result != 0 && result != 1) {
+               printf("%s: mr:%d res:%d\n", __func__, mr, RPC_R8(&msg));
+               if (ret)
+                       printf("%s: mr:%d res:%d\n", __func__, mr,
+                              RPC_R8(&msg));
+       }
+
+       return (sc_bool_t)result;
+}
+
+int sc_rm_get_memreg_info(sc_ipc_t ipc, sc_rm_mr_t mr, sc_faddr_t *addr_start,
+                         sc_faddr_t *addr_end)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_RM;
+       RPC_FUNC(&msg) = (u8)RM_FUNC_GET_MEMREG_INFO;
+       RPC_U8(&msg, 0U) = (u8)mr;
+       RPC_SIZE(&msg) = 2U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       if (ret)
+               printf("%s: mr:%d res:%d\n", __func__, mr, RPC_R8(&msg));
+
+       if (addr_start)
+               *addr_start = ((u64)RPC_U32(&msg, 0U) << 32U) |
+                       RPC_U32(&msg, 4U);
+
+       if (addr_end)
+               *addr_end = ((u64)RPC_U32(&msg, 8U) << 32U) |
+                       RPC_U32(&msg, 12U);
+
+       return ret;
+}
+
+sc_bool_t sc_rm_is_resource_owned(sc_ipc_t ipc, sc_rsrc_t resource)
+{
+       struct udevice *dev = gd->arch.scu_dev;
+       int size = sizeof(struct sc_rpc_msg_s);
+       struct sc_rpc_msg_s msg;
+       int ret;
+       u8 result;
+
+       if (!dev)
+               hang();
+
+       RPC_VER(&msg) = SC_RPC_VERSION;
+       RPC_SVC(&msg) = (u8)SC_RPC_SVC_RM;
+       RPC_FUNC(&msg) = (u8)RM_FUNC_IS_RESOURCE_OWNED;
+       RPC_U16(&msg, 0U) = (u16)resource;
+       RPC_SIZE(&msg) = 2U;
+
+       ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
+       result = RPC_R8(&msg);
+       if (result != 0 && result != 1) {
+               printf("%s: resource:%d res:%d\n",
+                      __func__, resource, RPC_R8(&msg));
+               if (ret)
+                       printf("%s: res:%d res:%d\n", __func__, resource,
+                              RPC_R8(&msg));
+       }
+
+       return !!result;
+}