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i.MX drivers change for 5.9:

Browse Source 
- Update SCU irq code to call pm_system_wakeup() in general MU IRQ
   handler, so that system can be waked up when MU IRQ arrives.
 - Move i.MX SCU soc driver into imx firmware folder to get it
   initialized from i.MX SCU firmware driver.
 - Clean up soc-imx-scu driver a bit by using devm_kasprintf().
 - Correct postfix setting for cm40 power domain in scu-pd driver.
 - Add resource management support for IMX_SCU firmware driver.
 - Add more cm4 resources to i.MX SCU power domain driver.
 - Select ARM_GIC_V3 from SOC_IMX8M for being able to use GICv3 driver
   in AARCH32 mode Linux on AARCH64 hardware.
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Merge tag 'imx-drivers-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

i.MX drivers change for 5.9:

- Update SCU irq code to call pm_system_wakeup() in general MU IRQ
  handler, so that system can be waked up when MU IRQ arrives.
- Move i.MX SCU soc driver into imx firmware folder to get it
  initialized from i.MX SCU firmware driver.
- Clean up soc-imx-scu driver a bit by using devm_kasprintf().
- Correct postfix setting for cm40 power domain in scu-pd driver.
- Add resource management support for IMX_SCU firmware driver.
- Add more cm4 resources to i.MX SCU power domain driver.
- Select ARM_GIC_V3 from SOC_IMX8M for being able to use GICv3 driver
  in AARCH32 mode Linux on AARCH64 hardware.

* tag 'imx-drivers-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  soc: imx: select ARM_GIC_V3 for i.MX8M
  firmware: imx: Move i.MX SCU soc driver into imx firmware folder
  firmware: imx: scu-pd: add more cm4 resources
  firmware: imx: add resource management api
  firmware: imx: scu-pd: fix cm40 power domain
  soc: imx: scu: use devm_kasprintf
  firmware: imx: make sure MU irq can wake up system from suspend mode

Link: https://lore.kernel.org/r/20200720085536.24138-1-shawnguo@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2020-07-22 22:35:21 +02:00
commit e2837df668
11 changed files with 153 additions and 80 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/configs/defconfig
View File

@ -850,7 +850,6 @@ CONFIG_OWL_PM_DOMAINS=y
CONFIG_RASPBERRYPI_POWER=y
CONFIG_FSL_DPAA=y
CONFIG_FSL_MC_DPIO=y
CONFIG_IMX_SCU_SOC=y
CONFIG_QCOM_AOSS_QMP=y
CONFIG_QCOM_GENI_SE=y
CONFIG_QCOM_RMTFS_MEM=m

2
drivers/firmware/imx/Makefile
View File

@ -1,4 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_IMX_DSP) += imx-dsp.o
obj-$(CONFIG_IMX_SCU) += imx-scu.o misc.o imx-scu-irq.o
obj-$(CONFIG_IMX_SCU) += imx-scu.o misc.o imx-scu-irq.o rm.o imx-scu-soc.o
obj-$(CONFIG_IMX_SCU_PD) += scu-pd.o

2
drivers/firmware/imx/imx-scu-irq.c
View File

@ -10,6 +10,7 @@
#include <linux/firmware/imx/ipc.h>
#include <linux/firmware/imx/sci.h>
#include <linux/mailbox_client.h>
#include <linux/suspend.h>
#define IMX_SC_IRQ_FUNC_ENABLE 1
#define IMX_SC_IRQ_FUNC_STATUS 2
@ -91,6 +92,7 @@ static void imx_scu_irq_work_handler(struct work_struct *work)
if (!irq_status)
continue;
pm_system_wakeup();
imx_scu_irq_notifier_call_chain(irq_status, &i);
}
}

83
drivers/soc/imx/soc-imx-scu.c → drivers/firmware/imx/imx-scu-soc.c
View File

@ -10,9 +10,7 @@
#include <linux/platform_device.h>
#include <linux/of.h>
#define IMX_SCU_SOC_DRIVER_NAME "imx-scu-soc"
static struct imx_sc_ipc *soc_ipc_handle;
static struct imx_sc_ipc *imx_sc_soc_ipc_handle;
struct imx_sc_msg_misc_get_soc_id {
struct imx_sc_rpc_msg hdr;
@ -44,7 +42,7 @@ static int imx_scu_soc_uid(u64 *soc_uid)
hdr->func = IMX_SC_MISC_FUNC_UNIQUE_ID;
hdr->size = 1;
ret = imx_scu_call_rpc(soc_ipc_handle, &msg, true);
ret = imx_scu_call_rpc(imx_sc_soc_ipc_handle, &msg, true);
if (ret) {
pr_err("%s: get soc uid failed, ret %d\n", __func__, ret);
return ret;
@ -71,7 +69,7 @@ static int imx_scu_soc_id(void)
msg.data.req.control = IMX_SC_C_ID;
msg.data.req.resource = IMX_SC_R_SYSTEM;
ret = imx_scu_call_rpc(soc_ipc_handle, &msg, true);
ret = imx_scu_call_rpc(imx_sc_soc_ipc_handle, &msg, true);
if (ret) {
pr_err("%s: get soc info failed, ret %d\n", __func__, ret);
return ret;
@ -80,7 +78,7 @@ static int imx_scu_soc_id(void)
return msg.data.resp.id;
}
static int imx_scu_soc_probe(struct platform_device *pdev)
int imx_scu_soc_init(struct device *dev)
{
struct soc_device_attribute *soc_dev_attr;
struct soc_device *soc_dev;
@ -88,11 +86,11 @@ static int imx_scu_soc_probe(struct platform_device *pdev)
u64 uid = 0;
u32 val;
ret = imx_scu_get_handle(&soc_ipc_handle);
ret = imx_scu_get_handle(&imx_sc_soc_ipc_handle);
if (ret)
return ret;
soc_dev_attr = devm_kzalloc(&pdev->dev, sizeof(*soc_dev_attr),
soc_dev_attr = devm_kzalloc(dev, sizeof(*soc_dev_attr),
GFP_KERNEL);
if (!soc_dev_attr)
return -ENOMEM;
@ -115,73 +113,26 @@ static int imx_scu_soc_probe(struct platform_device *pdev)
/* format soc_id value passed from SCU firmware */
val = id & 0x1f;
soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "0x%x", val);
soc_dev_attr->soc_id = devm_kasprintf(dev, GFP_KERNEL, "0x%x", val);
if (!soc_dev_attr->soc_id)
return -ENOMEM;
/* format revision value passed from SCU firmware */
val = (id >> 5) & 0xf;
val = (((val >> 2) + 1) << 4) | (val & 0x3);
soc_dev_attr->revision = kasprintf(GFP_KERNEL,
"%d.%d",
(val >> 4) & 0xf,
val & 0xf);
if (!soc_dev_attr->revision) {
ret = -ENOMEM;
goto free_soc_id;
}
soc_dev_attr->revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
(val >> 4) & 0xf, val & 0xf);
if (!soc_dev_attr->revision)
return -ENOMEM;
soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", uid);
if (!soc_dev_attr->serial_number) {
ret = -ENOMEM;
goto free_revision;
}
soc_dev_attr->serial_number = devm_kasprintf(dev, GFP_KERNEL,
"%016llX", uid);
if (!soc_dev_attr->serial_number)
return -ENOMEM;
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
ret = PTR_ERR(soc_dev);
goto free_serial_number;
}
if (IS_ERR(soc_dev))
return PTR_ERR(soc_dev);
return 0;
free_serial_number:
kfree(soc_dev_attr->serial_number);
free_revision:
kfree(soc_dev_attr->revision);
free_soc_id:
kfree(soc_dev_attr->soc_id);
return ret;
}
static struct platform_driver imx_scu_soc_driver = {
.driver = {
.name = IMX_SCU_SOC_DRIVER_NAME,
},
.probe = imx_scu_soc_probe,
};
static int __init imx_scu_soc_init(void)
{
struct platform_device *pdev;
struct device_node *np;
int ret;
np = of_find_compatible_node(NULL, NULL, "fsl,imx-scu");
if (!np)
return -ENODEV;
of_node_put(np);
ret = platform_driver_register(&imx_scu_soc_driver);
if (ret)
return ret;
pdev = platform_device_register_simple(IMX_SCU_SOC_DRIVER_NAME,
-1, NULL, 0);
if (IS_ERR(pdev))
platform_driver_unregister(&imx_scu_soc_driver);
return PTR_ERR_OR_ZERO(pdev);
}
device_initcall(imx_scu_soc_init);

4
drivers/firmware/imx/imx-scu.c
View File

@ -328,6 +328,10 @@ static int imx_scu_probe(struct platform_device *pdev)
imx_sc_ipc_handle = sc_ipc;
ret = imx_scu_soc_init(dev);
if (ret)
dev_warn(dev, "failed to initialize SoC info: %d\n", ret);
ret = imx_scu_enable_general_irq_channel(dev);
if (ret)
dev_warn(dev,

45
drivers/firmware/imx/rm.c Normal file
View File

@ -0,0 +1,45 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2020 NXP
*
* File containing client-side RPC functions for the RM service. These
* function are ported to clients that communicate to the SC.
*/
#include <linux/firmware/imx/svc/rm.h>
struct imx_sc_msg_rm_rsrc_owned {
struct imx_sc_rpc_msg hdr;
u16 resource;
} __packed __aligned(4);
/*
* This function check @resource is owned by current partition or not
*
* @param[in] ipc IPC handle
* @param[in] resource resource the control is associated with
*
* @return Returns 0 for not owned and 1 for owned.
*/
bool imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource)
{
struct imx_sc_msg_rm_rsrc_owned msg;
struct imx_sc_rpc_msg *hdr = &msg.hdr;
hdr->ver = IMX_SC_RPC_VERSION;
hdr->svc = IMX_SC_RPC_SVC_RM;
hdr->func = IMX_SC_RM_FUNC_IS_RESOURCE_OWNED;
hdr->size = 2;
msg.resource = resource;
/*
* SCU firmware only returns value 0 or 1
* for resource owned check which means not owned or owned.
* So it is always successful.
*/
imx_scu_call_rpc(ipc, &msg, true);
return hdr->func;
}
EXPORT_SYMBOL(imx_sc_rm_is_resource_owned);

14
drivers/firmware/imx/scu-pd.c
View File

@ -167,8 +167,18 @@ static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = {
{ "dc0-pll", IMX_SC_R_DC_0_PLL_0, 2, true, 0 },
/* CM40 SS */
{ "cm40_i2c", IMX_SC_R_M4_0_I2C, 1, 0 },
{ "cm40_intmux", IMX_SC_R_M4_0_INTMUX, 1, 0 },
{ "cm40-i2c", IMX_SC_R_M4_0_I2C, 1, false, 0 },
{ "cm40-intmux", IMX_SC_R_M4_0_INTMUX, 1, false, 0 },
{ "cm40-pid", IMX_SC_R_M4_0_PID0, 5, true, 0},
{ "cm40-mu-a1", IMX_SC_R_M4_0_MU_1A, 1, false, 0},
{ "cm40-lpuart", IMX_SC_R_M4_0_UART, 1, false, 0},
/* CM41 SS */
{ "cm41-i2c", IMX_SC_R_M4_1_I2C, 1, false, 0 },
{ "cm41-intmux", IMX_SC_R_M4_1_INTMUX, 1, false, 0 },
{ "cm41-pid", IMX_SC_R_M4_1_PID0, 5, true, 0},
{ "cm41-mu-a1", IMX_SC_R_M4_1_MU_1A, 1, false, 0},
{ "cm41-lpuart", IMX_SC_R_M4_1_UART, 1, false, 0},
};
static const struct imx_sc_pd_soc imx8qxp_scu_pd = {

10
drivers/soc/imx/Kconfig
View File

@ -8,20 +8,12 @@ config IMX_GPCV2_PM_DOMAINS
select PM_GENERIC_DOMAINS
default y if SOC_IMX7D
config IMX_SCU_SOC
bool "i.MX System Controller Unit SoC info support"
depends on IMX_SCU
select SOC_BUS
help
If you say yes here you get support for the NXP i.MX System
Controller Unit SoC info module, it will provide the SoC info
like SoC family, ID and revision etc.
config SOC_IMX8M
bool "i.MX8M SoC family support"
depends on ARCH_MXC || COMPILE_TEST
default ARCH_MXC && ARM64
select SOC_BUS
select ARM_GIC_V3 if ARCH_MXC
help
If you say yes here you get support for the NXP i.MX8M family
support, it will provide the SoC info like SoC family,

1
drivers/soc/imx/Makefile
View File

@ -5,4 +5,3 @@ endif
obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o
obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o
obj-$(CONFIG_IMX_SCU_SOC) += soc-imx-scu.o

2
include/linux/firmware/imx/sci.h
View File

@ -14,9 +14,11 @@
#include <linux/firmware/imx/svc/misc.h>
#include <linux/firmware/imx/svc/pm.h>
#include <linux/firmware/imx/svc/rm.h>
int imx_scu_enable_general_irq_channel(struct device *dev);
int imx_scu_irq_register_notifier(struct notifier_block *nb);
int imx_scu_irq_unregister_notifier(struct notifier_block *nb);
int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable);
int imx_scu_soc_init(struct device *dev);
#endif /* _SC_SCI_H */

69
include/linux/firmware/imx/svc/rm.h Normal file
View File

@ -0,0 +1,69 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
* Copyright 2017-2020 NXP
*
* Header file containing the public API for the System Controller (SC)
* Resource Management (RM) function. This includes functions for
* partitioning resources, pads, and memory regions.
*
* RM_SVC (SVC) Resource Management Service
*
* Module for the Resource Management (RM) service.
*/
#ifndef _SC_RM_API_H
#define _SC_RM_API_H
#include <linux/firmware/imx/sci.h>
/*
* This type is used to indicate RPC RM function calls.
*/
enum imx_sc_rm_func {
IMX_SC_RM_FUNC_UNKNOWN = 0,
IMX_SC_RM_FUNC_PARTITION_ALLOC = 1,
IMX_SC_RM_FUNC_SET_CONFIDENTIAL = 31,
IMX_SC_RM_FUNC_PARTITION_FREE = 2,
IMX_SC_RM_FUNC_GET_DID = 26,
IMX_SC_RM_FUNC_PARTITION_STATIC = 3,
IMX_SC_RM_FUNC_PARTITION_LOCK = 4,
IMX_SC_RM_FUNC_GET_PARTITION = 5,
IMX_SC_RM_FUNC_SET_PARENT = 6,
IMX_SC_RM_FUNC_MOVE_ALL = 7,
IMX_SC_RM_FUNC_ASSIGN_RESOURCE = 8,
IMX_SC_RM_FUNC_SET_RESOURCE_MOVABLE = 9,
IMX_SC_RM_FUNC_SET_SUBSYS_RSRC_MOVABLE = 28,
IMX_SC_RM_FUNC_SET_MASTER_ATTRIBUTES = 10,
IMX_SC_RM_FUNC_SET_MASTER_SID = 11,
IMX_SC_RM_FUNC_SET_PERIPHERAL_PERMISSIONS = 12,
IMX_SC_RM_FUNC_IS_RESOURCE_OWNED = 13,
IMX_SC_RM_FUNC_GET_RESOURCE_OWNER = 33,
IMX_SC_RM_FUNC_IS_RESOURCE_MASTER = 14,
IMX_SC_RM_FUNC_IS_RESOURCE_PERIPHERAL = 15,
IMX_SC_RM_FUNC_GET_RESOURCE_INFO = 16,
IMX_SC_RM_FUNC_MEMREG_ALLOC = 17,
IMX_SC_RM_FUNC_MEMREG_SPLIT = 29,
IMX_SC_RM_FUNC_MEMREG_FRAG = 32,
IMX_SC_RM_FUNC_MEMREG_FREE = 18,
IMX_SC_RM_FUNC_FIND_MEMREG = 30,
IMX_SC_RM_FUNC_ASSIGN_MEMREG = 19,
IMX_SC_RM_FUNC_SET_MEMREG_PERMISSIONS = 20,
IMX_SC_RM_FUNC_IS_MEMREG_OWNED = 21,
IMX_SC_RM_FUNC_GET_MEMREG_INFO = 22,
IMX_SC_RM_FUNC_ASSIGN_PAD = 23,
IMX_SC_RM_FUNC_SET_PAD_MOVABLE = 24,
IMX_SC_RM_FUNC_IS_PAD_OWNED = 25,
IMX_SC_RM_FUNC_DUMP = 27,
};
#if IS_ENABLED(CONFIG_IMX_SCU)
bool imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource);
#else
static inline bool
imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource)
{
return true;
}
#endif
#endif