| Message ID | 20231027072943.3418997-2-anshuman.khandual@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Subject: coresight: Move remaining AMBA ACPI devices into platform driver | expand |
Hi Anshuman,
kernel test robot noticed the following build warnings:
[auto build test WARNING on rafael-pm/linux-next]
[also build test WARNING on rafael-pm/acpi-bus soc/for-next atorgue-stm32/stm32-next linus/master v6.6-rc7 next-20231027]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Anshuman-Khandual/coresight-replicator-Move-ACPI-support-from-AMBA-driver-to-platform-driver/20231027-153540
base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
patch link: https://lore.kernel.org/r/20231027072943.3418997-2-anshuman.khandual%40arm.com
patch subject: [PATCH 1/7] coresight: replicator: Move ACPI support from AMBA driver to platform driver
config: arm-randconfig-002-20231028 (https://download.01.org/0day-ci/archive/20231028/202310282118.A4PM0Rdg-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231028/202310282118.A4PM0Rdg-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310282118.A4PM0Rdg-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/hwtracing/coresight/coresight-replicator.c:45: warning: Function parameter or member 'pclk' not described in 'replicator_drvdata'
vim +45 drivers/hwtracing/coresight/coresight-replicator.c
0f5f9b6ba9e1a7 drivers/hwtracing/coresight/coresight-replicator.c Suzuki K Poulose 2019-06-19 28
ceacc1d9b7ae41 drivers/coresight/coresight-replicator.c Pratik Patel 2014-11-03 29 /**
ceacc1d9b7ae41 drivers/coresight/coresight-replicator.c Pratik Patel 2014-11-03 30 * struct replicator_drvdata - specifics associated to a replicator component
455328b1772a19 drivers/hwtracing/coresight/coresight-replicator.c Suzuki K Poulose 2019-04-25 31 * @base: memory mapped base address for this component. Also indicates
455328b1772a19 drivers/hwtracing/coresight/coresight-replicator.c Suzuki K Poulose 2019-04-25 32 * whether this one is programmable or not.
9875cd9ce2b536 drivers/hwtracing/coresight/coresight-replicator.c Linus Walleij 2015-05-19 33 * @atclk: optional clock for the core parts of the replicator.
ceacc1d9b7ae41 drivers/coresight/coresight-replicator.c Pratik Patel 2014-11-03 34 * @csdev: component vitals needed by the framework
edda32dabedb01 drivers/hwtracing/coresight/coresight-replicator.c Yabin Cui 2019-11-04 35 * @spinlock: serialize enable/disable operations.
8f3ce74c20f21e drivers/hwtracing/coresight/coresight-replicator.c Sai Prakash Ranjan 2020-07-16 36 * @check_idfilter_val: check if the context is lost upon clock removal.
ceacc1d9b7ae41 drivers/coresight/coresight-replicator.c Pratik Patel 2014-11-03 37 */
ceacc1d9b7ae41 drivers/coresight/coresight-replicator.c Pratik Patel 2014-11-03 38 struct replicator_drvdata {
455328b1772a19 drivers/hwtracing/coresight/coresight-replicator.c Suzuki K Poulose 2019-04-25 39 void __iomem *base;
9875cd9ce2b536 drivers/hwtracing/coresight/coresight-replicator.c Linus Walleij 2015-05-19 40 struct clk *atclk;
bed4866511371a drivers/hwtracing/coresight/coresight-replicator.c Anshuman Khandual 2023-10-27 41 struct clk *pclk;
ceacc1d9b7ae41 drivers/coresight/coresight-replicator.c Pratik Patel 2014-11-03 42 struct coresight_device *csdev;
edda32dabedb01 drivers/hwtracing/coresight/coresight-replicator.c Yabin Cui 2019-11-04 43 spinlock_t spinlock;
8f3ce74c20f21e drivers/hwtracing/coresight/coresight-replicator.c Sai Prakash Ranjan 2020-07-16 44 bool check_idfilter_val;
ceacc1d9b7ae41 drivers/coresight/coresight-replicator.c Pratik Patel 2014-11-03 @45 };
ceacc1d9b7ae41 drivers/coresight/coresight-replicator.c Pratik Patel 2014-11-03 46
diff --git a/drivers/acpi/arm64/amba.c b/drivers/acpi/arm64/amba.c index 60be8ee1dbdc..ac59ce50de07 100644 --- a/drivers/acpi/arm64/amba.c +++ b/drivers/acpi/arm64/amba.c @@ -27,7 +27,6 @@ static const struct acpi_device_id amba_id_list[] = { {"ARMHC503", 0}, /* ARM CoreSight Debug */ {"ARMHC979", 0}, /* ARM CoreSight TPIU */ {"ARMHC97C", 0}, /* ARM CoreSight SoC-400 TMC, SoC-600 ETF/ETB */ - {"ARMHC98D", 0}, /* ARM CoreSight Dynamic Replicator */ {"ARMHC9CA", 0}, /* ARM CoreSight CATU */ {"ARMHC9FF", 0}, /* ARM CoreSight Dynamic Funnel */ {"", 0}, diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index b6be73034996..64de0bee02ec 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -38,6 +38,7 @@ DEFINE_CORESIGHT_DEVLIST(replicator_devs, "replicator"); struct replicator_drvdata { void __iomem *base; struct clk *atclk; + struct clk *pclk; struct coresight_device *csdev; spinlock_t spinlock; bool check_idfilter_val; @@ -243,6 +244,10 @@ static int replicator_probe(struct device *dev, struct resource *res) return ret; } + drvdata->pclk = coresight_get_enable_apb_pclk(dev); + if (IS_ERR(drvdata->pclk)) + return -ENODEV; + /* * Map the device base for dynamic-replicator, which has been * validated by AMBA core @@ -301,16 +306,16 @@ static int replicator_remove(struct device *dev) return 0; } -static int static_replicator_probe(struct platform_device *pdev) +static int replicator_platform_probe(struct platform_device *pdev) { + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); int ret; pm_runtime_get_noresume(&pdev->dev); pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev); - /* Static replicators do not have programming base */ - ret = replicator_probe(&pdev->dev, NULL); + ret = replicator_probe(&pdev->dev, res); if (ret) { pm_runtime_put_noidle(&pdev->dev); @@ -320,7 +325,7 @@ static int static_replicator_probe(struct platform_device *pdev) return ret; } -static int static_replicator_remove(struct platform_device *pdev) +static int replicator_platform_remove(struct platform_device *pdev) { replicator_remove(&pdev->dev); pm_runtime_disable(&pdev->dev); @@ -335,6 +340,8 @@ static int replicator_runtime_suspend(struct device *dev) if (drvdata && !IS_ERR(drvdata->atclk)) clk_disable_unprepare(drvdata->atclk); + if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_disable_unprepare(drvdata->pclk); return 0; } @@ -345,6 +352,8 @@ static int replicator_runtime_resume(struct device *dev) if (drvdata && !IS_ERR(drvdata->atclk)) clk_prepare_enable(drvdata->atclk); + if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_prepare_enable(drvdata->pclk); return 0; } #endif @@ -354,31 +363,32 @@ static const struct dev_pm_ops replicator_dev_pm_ops = { replicator_runtime_resume, NULL) }; -static const struct of_device_id static_replicator_match[] = { +static const struct of_device_id replicator_match[] = { {.compatible = "arm,coresight-replicator"}, {.compatible = "arm,coresight-static-replicator"}, {} }; -MODULE_DEVICE_TABLE(of, static_replicator_match); +MODULE_DEVICE_TABLE(of, replicator_match); #ifdef CONFIG_ACPI -static const struct acpi_device_id static_replicator_acpi_ids[] = { +static const struct acpi_device_id replicator_acpi_ids[] = { {"ARMHC985", 0}, /* ARM CoreSight Static Replicator */ + {"ARMHC98D", 0}, /* ARM CoreSight Dynamic Replicator */ {} }; -MODULE_DEVICE_TABLE(acpi, static_replicator_acpi_ids); +MODULE_DEVICE_TABLE(acpi, replicator_acpi_ids); #endif -static struct platform_driver static_replicator_driver = { - .probe = static_replicator_probe, - .remove = static_replicator_remove, +static struct platform_driver replicator_driver = { + .probe = replicator_platform_probe, + .remove = replicator_platform_remove, .driver = { - .name = "coresight-static-replicator", + .name = "coresight-replicator", /* THIS_MODULE is taken care of by platform_driver_register() */ - .of_match_table = of_match_ptr(static_replicator_match), - .acpi_match_table = ACPI_PTR(static_replicator_acpi_ids), + .of_match_table = of_match_ptr(replicator_match), + .acpi_match_table = ACPI_PTR(replicator_acpi_ids), .pm = &replicator_dev_pm_ops, .suppress_bind_attrs = true, }, @@ -419,7 +429,7 @@ static int __init replicator_init(void) { int ret; - ret = platform_driver_register(&static_replicator_driver); + ret = platform_driver_register(&replicator_driver); if (ret) { pr_info("Error registering platform driver\n"); return ret; @@ -428,7 +438,7 @@ static int __init replicator_init(void) ret = amba_driver_register(&dynamic_replicator_driver); if (ret) { pr_info("Error registering amba driver\n"); - platform_driver_unregister(&static_replicator_driver); + platform_driver_unregister(&replicator_driver); } return ret; @@ -436,7 +446,7 @@ static int __init replicator_init(void) static void __exit replicator_exit(void) { - platform_driver_unregister(&static_replicator_driver); + platform_driver_unregister(&replicator_driver); amba_driver_unregister(&dynamic_replicator_driver); }
Add support for the dynamic replicator device in the platform driver, which can then be used on ACPI based platforms. This change would now allow runtime power management for repliacator devices on ACPI based systems. The driver would try to enable the APB clock if available. Also, rename the code to reflect the fact that it now handles both static and dynamic replicators. Cc: Lorenzo Pieralisi <lpieralisi@kernel.org> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: James Clark <james.clark@arm.com> Cc: linux-acpi@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: coresight@lists.linaro.org Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- drivers/acpi/arm64/amba.c | 1 - .../coresight/coresight-replicator.c | 44 ++++++++++++------- 2 files changed, 27 insertions(+), 18 deletions(-)