diff options
Diffstat (limited to 'drivers/hwtracing/coresight')
19 files changed, 741 insertions, 172 deletions
diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c index 3949ded0d4..bfea880d6d 100644 --- a/drivers/hwtracing/coresight/coresight-catu.c +++ b/drivers/hwtracing/coresight/coresight-catu.c @@ -7,11 +7,13 @@ * Author: Suzuki K Poulose <suzuki.poulose@arm.com> */ +#include <linux/acpi.h> #include <linux/amba/bus.h> #include <linux/device.h> #include <linux/dma-mapping.h> #include <linux/io.h> #include <linux/kernel.h> +#include <linux/platform_device.h> #include <linux/slab.h> #include "coresight-catu.h" @@ -502,28 +504,20 @@ static const struct coresight_ops catu_ops = { .helper_ops = &catu_helper_ops, }; -static int catu_probe(struct amba_device *adev, const struct amba_id *id) +static int __catu_probe(struct device *dev, struct resource *res) { int ret = 0; u32 dma_mask; - struct catu_drvdata *drvdata; + struct catu_drvdata *drvdata = dev_get_drvdata(dev); struct coresight_desc catu_desc; struct coresight_platform_data *pdata = NULL; - struct device *dev = &adev->dev; void __iomem *base; catu_desc.name = coresight_alloc_device_name(&catu_devs, dev); if (!catu_desc.name) return -ENOMEM; - drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); - if (!drvdata) { - ret = -ENOMEM; - goto out; - } - - dev_set_drvdata(dev, drvdata); - base = devm_ioremap_resource(dev, &adev->res); + base = devm_ioremap_resource(dev, res); if (IS_ERR(base)) { ret = PTR_ERR(base); goto out; @@ -567,19 +561,39 @@ static int catu_probe(struct amba_device *adev, const struct amba_id *id) drvdata->csdev = coresight_register(&catu_desc); if (IS_ERR(drvdata->csdev)) ret = PTR_ERR(drvdata->csdev); - else - pm_runtime_put(&adev->dev); out: return ret; } -static void catu_remove(struct amba_device *adev) +static int catu_probe(struct amba_device *adev, const struct amba_id *id) { - struct catu_drvdata *drvdata = dev_get_drvdata(&adev->dev); + struct catu_drvdata *drvdata; + int ret; + + drvdata = devm_kzalloc(&adev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + amba_set_drvdata(adev, drvdata); + ret = __catu_probe(&adev->dev, &adev->res); + if (!ret) + pm_runtime_put(&adev->dev); + + return ret; +} + +static void __catu_remove(struct device *dev) +{ + struct catu_drvdata *drvdata = dev_get_drvdata(dev); coresight_unregister(drvdata->csdev); } +static void catu_remove(struct amba_device *adev) +{ + __catu_remove(&adev->dev); +} + static struct amba_id catu_ids[] = { CS_AMBA_ID(0x000bb9ee), {}, @@ -590,7 +604,6 @@ MODULE_DEVICE_TABLE(amba, catu_ids); static struct amba_driver catu_driver = { .drv = { .name = "coresight-catu", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = catu_probe, @@ -598,13 +611,98 @@ static struct amba_driver catu_driver = { .id_table = catu_ids, }; +static int catu_platform_probe(struct platform_device *pdev) +{ + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + struct catu_drvdata *drvdata; + int ret = 0; + + drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + drvdata->pclk = coresight_get_enable_apb_pclk(&pdev->dev); + if (IS_ERR(drvdata->pclk)) + return -ENODEV; + + pm_runtime_get_noresume(&pdev->dev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + dev_set_drvdata(&pdev->dev, drvdata); + ret = __catu_probe(&pdev->dev, res); + pm_runtime_put(&pdev->dev); + if (ret) { + pm_runtime_disable(&pdev->dev); + if (!IS_ERR_OR_NULL(drvdata->pclk)) + clk_put(drvdata->pclk); + } + + return ret; +} + +static void catu_platform_remove(struct platform_device *pdev) +{ + struct catu_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (WARN_ON(!drvdata)) + return; + + __catu_remove(&pdev->dev); + pm_runtime_disable(&pdev->dev); + if (!IS_ERR_OR_NULL(drvdata->pclk)) + clk_put(drvdata->pclk); +} + +#ifdef CONFIG_PM +static int catu_runtime_suspend(struct device *dev) +{ + struct catu_drvdata *drvdata = dev_get_drvdata(dev); + + if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_disable_unprepare(drvdata->pclk); + return 0; +} + +static int catu_runtime_resume(struct device *dev) +{ + struct catu_drvdata *drvdata = dev_get_drvdata(dev); + + if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_prepare_enable(drvdata->pclk); + return 0; +} +#endif + +static const struct dev_pm_ops catu_dev_pm_ops = { + SET_RUNTIME_PM_OPS(catu_runtime_suspend, catu_runtime_resume, NULL) +}; + +#ifdef CONFIG_ACPI +static const struct acpi_device_id catu_acpi_ids[] = { + {"ARMHC9CA", 0, 0, 0}, /* ARM CoreSight CATU */ + {}, +}; + +MODULE_DEVICE_TABLE(acpi, catu_acpi_ids); +#endif + +static struct platform_driver catu_platform_driver = { + .probe = catu_platform_probe, + .remove_new = catu_platform_remove, + .driver = { + .name = "coresight-catu-platform", + .acpi_match_table = ACPI_PTR(catu_acpi_ids), + .suppress_bind_attrs = true, + .pm = &catu_dev_pm_ops, + }, +}; + static int __init catu_init(void) { int ret; - ret = amba_driver_register(&catu_driver); - if (ret) - pr_info("Error registering catu driver\n"); + ret = coresight_init_driver("catu", &catu_driver, &catu_platform_driver); tmc_etr_set_catu_ops(&etr_catu_buf_ops); return ret; } @@ -612,7 +710,7 @@ static int __init catu_init(void) static void __exit catu_exit(void) { tmc_etr_remove_catu_ops(); - amba_driver_unregister(&catu_driver); + coresight_remove_driver(&catu_driver, &catu_platform_driver); } module_init(catu_init); diff --git a/drivers/hwtracing/coresight/coresight-catu.h b/drivers/hwtracing/coresight/coresight-catu.h index 442e034bbf..141feac1c1 100644 --- a/drivers/hwtracing/coresight/coresight-catu.h +++ b/drivers/hwtracing/coresight/coresight-catu.h @@ -61,6 +61,7 @@ #define CATU_IRQEN_OFF 0x0 struct catu_drvdata { + struct clk *pclk; void __iomem *base; struct coresight_device *csdev; int irq; diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index b83613e342..9fc6f6b863 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -1398,6 +1398,35 @@ static void __exit coresight_exit(void) module_init(coresight_init); module_exit(coresight_exit); +int coresight_init_driver(const char *drv, struct amba_driver *amba_drv, + struct platform_driver *pdev_drv) +{ + int ret; + + ret = amba_driver_register(amba_drv); + if (ret) { + pr_err("%s: error registering AMBA driver\n", drv); + return ret; + } + + ret = platform_driver_register(pdev_drv); + if (!ret) + return 0; + + pr_err("%s: error registering platform driver\n", drv); + amba_driver_unregister(amba_drv); + return ret; +} +EXPORT_SYMBOL_GPL(coresight_init_driver); + +void coresight_remove_driver(struct amba_driver *amba_drv, + struct platform_driver *pdev_drv) +{ + amba_driver_unregister(amba_drv); + platform_driver_unregister(pdev_drv); +} +EXPORT_SYMBOL_GPL(coresight_remove_driver); + MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>"); MODULE_AUTHOR("Mathieu Poirier <mathieu.poirier@linaro.org>"); diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c index 1874df7c6a..75962dae9a 100644 --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c @@ -4,6 +4,7 @@ * * Author: Leo Yan <leo.yan@linaro.org> */ +#include <linux/acpi.h> #include <linux/amba/bus.h> #include <linux/coresight.h> #include <linux/cpu.h> @@ -18,6 +19,7 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/panic_notifier.h> +#include <linux/platform_device.h> #include <linux/pm_qos.h> #include <linux/slab.h> #include <linux/smp.h> @@ -84,6 +86,7 @@ #define DEBUG_WAIT_TIMEOUT 32000 struct debug_drvdata { + struct clk *pclk; void __iomem *base; struct device *dev; int cpu; @@ -557,18 +560,12 @@ static void debug_func_exit(void) debugfs_remove_recursive(debug_debugfs_dir); } -static int debug_probe(struct amba_device *adev, const struct amba_id *id) +static int __debug_probe(struct device *dev, struct resource *res) { + struct debug_drvdata *drvdata = dev_get_drvdata(dev); void __iomem *base; - struct device *dev = &adev->dev; - struct debug_drvdata *drvdata; - struct resource *res = &adev->res; int ret; - drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); - if (!drvdata) - return -ENOMEM; - drvdata->cpu = coresight_get_cpu(dev); if (drvdata->cpu < 0) return drvdata->cpu; @@ -579,10 +576,7 @@ static int debug_probe(struct amba_device *adev, const struct amba_id *id) return -EBUSY; } - drvdata->dev = &adev->dev; - amba_set_drvdata(adev, drvdata); - - /* Validity for the resource is already checked by the AMBA core */ + drvdata->dev = dev; base = devm_ioremap_resource(dev, res); if (IS_ERR(base)) return PTR_ERR(base); @@ -629,10 +623,21 @@ err: return ret; } -static void debug_remove(struct amba_device *adev) +static int debug_probe(struct amba_device *adev, const struct amba_id *id) { - struct device *dev = &adev->dev; - struct debug_drvdata *drvdata = amba_get_drvdata(adev); + struct debug_drvdata *drvdata; + + drvdata = devm_kzalloc(&adev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + amba_set_drvdata(adev, drvdata); + return __debug_probe(&adev->dev, &adev->res); +} + +static void __debug_remove(struct device *dev) +{ + struct debug_drvdata *drvdata = dev_get_drvdata(dev); per_cpu(debug_drvdata, drvdata->cpu) = NULL; @@ -646,6 +651,11 @@ static void debug_remove(struct amba_device *adev) debug_func_exit(); } +static void debug_remove(struct amba_device *adev) +{ + __debug_remove(&adev->dev); +} + static const struct amba_cs_uci_id uci_id_debug[] = { { /* CPU Debug UCI data */ @@ -677,7 +687,102 @@ static struct amba_driver debug_driver = { .id_table = debug_ids, }; -module_amba_driver(debug_driver); +static int debug_platform_probe(struct platform_device *pdev) +{ + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + struct debug_drvdata *drvdata; + int ret = 0; + + drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + drvdata->pclk = coresight_get_enable_apb_pclk(&pdev->dev); + if (IS_ERR(drvdata->pclk)) + return -ENODEV; + + dev_set_drvdata(&pdev->dev, drvdata); + pm_runtime_get_noresume(&pdev->dev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + ret = __debug_probe(&pdev->dev, res); + if (ret) { + pm_runtime_put_noidle(&pdev->dev); + pm_runtime_disable(&pdev->dev); + if (!IS_ERR_OR_NULL(drvdata->pclk)) + clk_put(drvdata->pclk); + } + return ret; +} + +static void debug_platform_remove(struct platform_device *pdev) +{ + struct debug_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (WARN_ON(!drvdata)) + return; + + __debug_remove(&pdev->dev); + pm_runtime_disable(&pdev->dev); + if (!IS_ERR_OR_NULL(drvdata->pclk)) + clk_put(drvdata->pclk); +} + +#ifdef CONFIG_ACPI +static const struct acpi_device_id debug_platform_ids[] = { + {"ARMHC503", 0, 0, 0}, /* ARM CoreSight Debug */ + {}, +}; +MODULE_DEVICE_TABLE(acpi, debug_platform_ids); +#endif + +#ifdef CONFIG_PM +static int debug_runtime_suspend(struct device *dev) +{ + struct debug_drvdata *drvdata = dev_get_drvdata(dev); + + if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_disable_unprepare(drvdata->pclk); + return 0; +} + +static int debug_runtime_resume(struct device *dev) +{ + struct debug_drvdata *drvdata = dev_get_drvdata(dev); + + if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_prepare_enable(drvdata->pclk); + return 0; +} +#endif + +static const struct dev_pm_ops debug_dev_pm_ops = { + SET_RUNTIME_PM_OPS(debug_runtime_suspend, debug_runtime_resume, NULL) +}; + +static struct platform_driver debug_platform_driver = { + .probe = debug_platform_probe, + .remove_new = debug_platform_remove, + .driver = { + .name = "coresight-debug-platform", + .acpi_match_table = ACPI_PTR(debug_platform_ids), + .suppress_bind_attrs = true, + .pm = &debug_dev_pm_ops, + }, +}; + +static int __init debug_init(void) +{ + return coresight_init_driver("debug", &debug_driver, &debug_platform_driver); +} + +static void __exit debug_exit(void) +{ + coresight_remove_driver(&debug_driver, &debug_platform_driver); +} +module_init(debug_init); +module_exit(debug_exit); MODULE_AUTHOR("Leo Yan <leo.yan@linaro.org>"); MODULE_DESCRIPTION("ARM Coresight CPU Debug Driver"); diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c index e805617020..d2b5a5718c 100644 --- a/drivers/hwtracing/coresight/coresight-cti-core.c +++ b/drivers/hwtracing/coresight/coresight-cti-core.c @@ -982,7 +982,6 @@ MODULE_DEVICE_TABLE(amba, cti_ids); static struct amba_driver cti_driver = { .drv = { .name = "coresight-cti", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = cti_probe, diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index 3aab182b56..7edd3f1d0d 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -844,7 +844,6 @@ MODULE_DEVICE_TABLE(amba, etb_ids); static struct amba_driver etb_driver = { .drv = { .name = "coresight-etb10", - .owner = THIS_MODULE, .pm = &etb_dev_pm_ops, .suppress_bind_attrs = true, diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c index 9d5c1391ff..8b362605d2 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c @@ -1008,7 +1008,6 @@ MODULE_DEVICE_TABLE(amba, etm_ids); static struct amba_driver etm_driver = { .drv = { .name = "coresight-etm3x", - .owner = THIS_MODULE, .pm = &etm_dev_pm_ops, .suppress_bind_attrs = true, }, diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index a0bdfabddb..bf01f01964 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -2349,7 +2349,6 @@ MODULE_DEVICE_TABLE(amba, etm4_ids); static struct amba_driver etm4x_amba_driver = { .drv = { .name = "coresight-etm4x", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = etm4_probe_amba, diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c index ef1a0abfee..5a819c8970 100644 --- a/drivers/hwtracing/coresight/coresight-funnel.c +++ b/drivers/hwtracing/coresight/coresight-funnel.c @@ -36,6 +36,7 @@ DEFINE_CORESIGHT_DEVLIST(funnel_devs, "funnel"); * struct funnel_drvdata - specifics associated to a funnel component * @base: memory mapped base address for this component. * @atclk: optional clock for the core parts of the funnel. + * @pclk: APB clock if present, otherwise NULL * @csdev: component vitals needed by the framework. * @priority: port selection order. * @spinlock: serialize enable/disable operations. @@ -43,6 +44,7 @@ DEFINE_CORESIGHT_DEVLIST(funnel_devs, "funnel"); struct funnel_drvdata { void __iomem *base; struct clk *atclk; + struct clk *pclk; struct coresight_device *csdev; unsigned long priority; spinlock_t spinlock; @@ -236,6 +238,10 @@ static int funnel_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-funnel, which has been * validated by AMBA core. @@ -272,12 +278,13 @@ static int funnel_probe(struct device *dev, struct resource *res) goto out_disable_clk; } - pm_runtime_put(dev); ret = 0; out_disable_clk: if (ret && !IS_ERR_OR_NULL(drvdata->atclk)) clk_disable_unprepare(drvdata->atclk); + if (ret && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_disable_unprepare(drvdata->pclk); return ret; } @@ -298,6 +305,9 @@ static int funnel_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; } @@ -308,6 +318,8 @@ static int funnel_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 @@ -316,55 +328,61 @@ static const struct dev_pm_ops funnel_dev_pm_ops = { SET_RUNTIME_PM_OPS(funnel_runtime_suspend, funnel_runtime_resume, NULL) }; -static int static_funnel_probe(struct platform_device *pdev) +static int funnel_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 funnel do not have programming base */ - ret = funnel_probe(&pdev->dev, NULL); - - if (ret) { - pm_runtime_put_noidle(&pdev->dev); + ret = funnel_probe(&pdev->dev, res); + pm_runtime_put(&pdev->dev); + if (ret) pm_runtime_disable(&pdev->dev); - } return ret; } -static void static_funnel_remove(struct platform_device *pdev) +static void funnel_platform_remove(struct platform_device *pdev) { + struct funnel_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (WARN_ON(!drvdata)) + return; + funnel_remove(&pdev->dev); pm_runtime_disable(&pdev->dev); + if (!IS_ERR_OR_NULL(drvdata->pclk)) + clk_put(drvdata->pclk); } -static const struct of_device_id static_funnel_match[] = { +static const struct of_device_id funnel_match[] = { {.compatible = "arm,coresight-static-funnel"}, {} }; -MODULE_DEVICE_TABLE(of, static_funnel_match); +MODULE_DEVICE_TABLE(of, funnel_match); #ifdef CONFIG_ACPI -static const struct acpi_device_id static_funnel_ids[] = { - {"ARMHC9FE", 0, 0, 0}, +static const struct acpi_device_id funnel_acpi_ids[] = { + {"ARMHC9FE", 0, 0, 0}, /* ARM Coresight Static Funnel */ + {"ARMHC9FF", 0, 0, 0}, /* ARM CoreSight Dynamic Funnel */ {}, }; -MODULE_DEVICE_TABLE(acpi, static_funnel_ids); +MODULE_DEVICE_TABLE(acpi, funnel_acpi_ids); #endif -static struct platform_driver static_funnel_driver = { - .probe = static_funnel_probe, - .remove_new = static_funnel_remove, - .driver = { - .name = "coresight-static-funnel", +static struct platform_driver funnel_driver = { + .probe = funnel_platform_probe, + .remove_new = funnel_platform_remove, + .driver = { + .name = "coresight-funnel", /* THIS_MODULE is taken care of by platform_driver_register() */ - .of_match_table = static_funnel_match, - .acpi_match_table = ACPI_PTR(static_funnel_ids), + .of_match_table = funnel_match, + .acpi_match_table = ACPI_PTR(funnel_acpi_ids), .pm = &funnel_dev_pm_ops, .suppress_bind_attrs = true, }, @@ -373,7 +391,13 @@ static struct platform_driver static_funnel_driver = { static int dynamic_funnel_probe(struct amba_device *adev, const struct amba_id *id) { - return funnel_probe(&adev->dev, &adev->res); + int ret; + + ret = funnel_probe(&adev->dev, &adev->res); + if (!ret) + pm_runtime_put(&adev->dev); + + return ret; } static void dynamic_funnel_remove(struct amba_device *adev) @@ -399,7 +423,6 @@ MODULE_DEVICE_TABLE(amba, dynamic_funnel_ids); static struct amba_driver dynamic_funnel_driver = { .drv = { .name = "coresight-dynamic-funnel", - .owner = THIS_MODULE, .pm = &funnel_dev_pm_ops, .suppress_bind_attrs = true, }, @@ -410,27 +433,12 @@ static struct amba_driver dynamic_funnel_driver = { static int __init funnel_init(void) { - int ret; - - ret = platform_driver_register(&static_funnel_driver); - if (ret) { - pr_info("Error registering platform driver\n"); - return ret; - } - - ret = amba_driver_register(&dynamic_funnel_driver); - if (ret) { - pr_info("Error registering amba driver\n"); - platform_driver_unregister(&static_funnel_driver); - } - - return ret; + return coresight_init_driver("funnel", &dynamic_funnel_driver, &funnel_driver); } static void __exit funnel_exit(void) { - platform_driver_unregister(&static_funnel_driver); - amba_driver_unregister(&dynamic_funnel_driver); + coresight_remove_driver(&dynamic_funnel_driver, &funnel_driver); } module_init(funnel_init); diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index 9d550f5697..57a009552c 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -297,8 +297,10 @@ static int of_get_coresight_platform_data(struct device *dev, continue; ret = of_coresight_parse_endpoint(dev, ep, pdata); - if (ret) + if (ret) { + of_node_put(ep); return ret; + } } return 0; diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index eb365236f9..fc3617642b 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -222,6 +222,16 @@ static inline void *coresight_get_uci_data(const struct amba_id *id) return uci_id->data; } +static inline void *coresight_get_uci_data_from_amba(const struct amba_id *table, u32 pid) +{ + while (table->mask) { + if ((pid & table->mask) == table->id) + return coresight_get_uci_data(table); + table++; + }; + return NULL; +} + void coresight_release_platform_data(struct coresight_device *csdev, struct device *dev, struct coresight_platform_data *pdata); diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index 73452d9dc1..3e55be9c84 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -31,6 +31,7 @@ DEFINE_CORESIGHT_DEVLIST(replicator_devs, "replicator"); * @base: memory mapped base address for this component. Also indicates * whether this one is programmable or not. * @atclk: optional clock for the core parts of the replicator. + * @pclk: APB clock if present, otherwise NULL * @csdev: component vitals needed by the framework * @spinlock: serialize enable/disable operations. * @check_idfilter_val: check if the context is lost upon clock removal. @@ -38,6 +39,7 @@ 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 +245,10 @@ 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 @@ -285,11 +291,12 @@ static int replicator_probe(struct device *dev, struct resource *res) } replicator_reset(drvdata); - pm_runtime_put(dev); out_disable_clk: if (ret && !IS_ERR_OR_NULL(drvdata->atclk)) clk_disable_unprepare(drvdata->atclk); + if (ret && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_disable_unprepare(drvdata->pclk); return ret; } @@ -301,29 +308,34 @@ 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); - - if (ret) { - pm_runtime_put_noidle(&pdev->dev); + ret = replicator_probe(&pdev->dev, res); + pm_runtime_put(&pdev->dev); + if (ret) pm_runtime_disable(&pdev->dev); - } return ret; } -static void static_replicator_remove(struct platform_device *pdev) +static void replicator_platform_remove(struct platform_device *pdev) { + struct replicator_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (WARN_ON(!drvdata)) + return; + replicator_remove(&pdev->dev); pm_runtime_disable(&pdev->dev); + if (!IS_ERR_OR_NULL(drvdata->pclk)) + clk_put(drvdata->pclk); } #ifdef CONFIG_PM @@ -334,6 +346,8 @@ 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; } @@ -344,6 +358,8 @@ 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 @@ -353,31 +369,32 @@ 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, 0, 0}, /* ARM CoreSight Static Replicator */ + {"ARMHC98D", 0, 0, 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_new = static_replicator_remove, +static struct platform_driver replicator_driver = { + .probe = replicator_platform_probe, + .remove_new = 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, }, @@ -386,7 +403,13 @@ static struct platform_driver static_replicator_driver = { static int dynamic_replicator_probe(struct amba_device *adev, const struct amba_id *id) { - return replicator_probe(&adev->dev, &adev->res); + int ret; + + ret = replicator_probe(&adev->dev, &adev->res); + if (!ret) + pm_runtime_put(&adev->dev); + + return ret; } static void dynamic_replicator_remove(struct amba_device *adev) @@ -406,7 +429,6 @@ static struct amba_driver dynamic_replicator_driver = { .drv = { .name = "coresight-dynamic-replicator", .pm = &replicator_dev_pm_ops, - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = dynamic_replicator_probe, @@ -416,27 +438,12 @@ static struct amba_driver dynamic_replicator_driver = { static int __init replicator_init(void) { - int ret; - - ret = platform_driver_register(&static_replicator_driver); - if (ret) { - pr_info("Error registering platform driver\n"); - return ret; - } - - ret = amba_driver_register(&dynamic_replicator_driver); - if (ret) { - pr_info("Error registering amba driver\n"); - platform_driver_unregister(&static_replicator_driver); - } - - return ret; + return coresight_init_driver("replicator", &dynamic_replicator_driver, &replicator_driver); } static void __exit replicator_exit(void) { - platform_driver_unregister(&static_replicator_driver); - amba_driver_unregister(&dynamic_replicator_driver); + coresight_remove_driver(&dynamic_replicator_driver, &replicator_driver); } module_init(replicator_init); diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 974d37e5f9..117dbb4845 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -29,6 +29,7 @@ #include <linux/perf_event.h> #include <linux/pm_runtime.h> #include <linux/stm.h> +#include <linux/platform_device.h> #include "coresight-priv.h" #include "coresight-trace-id.h" @@ -115,6 +116,7 @@ DEFINE_CORESIGHT_DEVLIST(stm_devs, "stm"); * struct stm_drvdata - specifics associated to an STM component * @base: memory mapped base address for this component. * @atclk: optional clock for the core parts of the STM. + * @pclk: APB clock if present, otherwise NULL * @csdev: component vitals needed by the framework. * @spinlock: only one at a time pls. * @chs: the channels accociated to this STM. @@ -131,6 +133,7 @@ DEFINE_CORESIGHT_DEVLIST(stm_devs, "stm"); struct stm_drvdata { void __iomem *base; struct clk *atclk; + struct clk *pclk; struct coresight_device *csdev; spinlock_t spinlock; struct channel_space chs; @@ -800,14 +803,22 @@ static void stm_init_generic_data(struct stm_drvdata *drvdata, drvdata->stm.set_options = stm_generic_set_options; } -static int stm_probe(struct amba_device *adev, const struct amba_id *id) +static const struct amba_id stm_ids[]; + +static char *stm_csdev_name(struct coresight_device *csdev) +{ + u32 stm_pid = coresight_get_pid(&csdev->access); + void *uci_data = coresight_get_uci_data_from_amba(stm_ids, stm_pid); + + return uci_data ? (char *)uci_data : "STM"; +} + +static int __stm_probe(struct device *dev, struct resource *res) { int ret, trace_id; void __iomem *base; - struct device *dev = &adev->dev; struct coresight_platform_data *pdata = NULL; struct stm_drvdata *drvdata; - struct resource *res = &adev->res; struct resource ch_res; struct coresight_desc desc = { 0 }; @@ -819,12 +830,16 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) if (!drvdata) return -ENOMEM; - drvdata->atclk = devm_clk_get(&adev->dev, "atclk"); /* optional */ + drvdata->atclk = devm_clk_get(dev, "atclk"); /* optional */ if (!IS_ERR(drvdata->atclk)) { ret = clk_prepare_enable(drvdata->atclk); if (ret) return ret; } + + drvdata->pclk = coresight_get_enable_apb_pclk(dev); + if (IS_ERR(drvdata->pclk)) + return -ENODEV; dev_set_drvdata(dev, drvdata); base = devm_ioremap_resource(dev, res); @@ -872,7 +887,7 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) ret = PTR_ERR(pdata); goto stm_unregister; } - adev->dev.platform_data = pdata; + dev->platform_data = pdata; desc.type = CORESIGHT_DEV_TYPE_SOURCE; desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE; @@ -893,10 +908,8 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) } drvdata->traceid = (u8)trace_id; - pm_runtime_put(&adev->dev); - dev_info(&drvdata->csdev->dev, "%s initialized\n", - (char *)coresight_get_uci_data(id)); + stm_csdev_name(drvdata->csdev)); return 0; cs_unregister: @@ -907,9 +920,20 @@ stm_unregister: return ret; } -static void stm_remove(struct amba_device *adev) +static int stm_probe(struct amba_device *adev, const struct amba_id *id) +{ + int ret; + + ret = __stm_probe(&adev->dev, &adev->res); + if (!ret) + pm_runtime_put(&adev->dev); + + return ret; +} + +static void __stm_remove(struct device *dev) { - struct stm_drvdata *drvdata = dev_get_drvdata(&adev->dev); + struct stm_drvdata *drvdata = dev_get_drvdata(dev); coresight_trace_id_put_system_id(drvdata->traceid); coresight_unregister(drvdata->csdev); @@ -917,6 +941,11 @@ static void stm_remove(struct amba_device *adev) stm_unregister_device(&drvdata->stm); } +static void stm_remove(struct amba_device *adev) +{ + __stm_remove(&adev->dev); +} + #ifdef CONFIG_PM static int stm_runtime_suspend(struct device *dev) { @@ -925,6 +954,8 @@ static int stm_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; } @@ -935,6 +966,8 @@ static int stm_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 @@ -954,7 +987,6 @@ MODULE_DEVICE_TABLE(amba, stm_ids); static struct amba_driver stm_driver = { .drv = { .name = "coresight-stm", - .owner = THIS_MODULE, .pm = &stm_dev_pm_ops, .suppress_bind_attrs = true, }, @@ -963,7 +995,66 @@ static struct amba_driver stm_driver = { .id_table = stm_ids, }; -module_amba_driver(stm_driver); +static int stm_platform_probe(struct platform_device *pdev) +{ + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + int ret = 0; + + pm_runtime_get_noresume(&pdev->dev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + ret = __stm_probe(&pdev->dev, res); + pm_runtime_put(&pdev->dev); + if (ret) + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static void stm_platform_remove(struct platform_device *pdev) +{ + struct stm_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (WARN_ON(!drvdata)) + return; + + __stm_remove(&pdev->dev); + pm_runtime_disable(&pdev->dev); + if (!IS_ERR_OR_NULL(drvdata->pclk)) + clk_put(drvdata->pclk); +} + +#ifdef CONFIG_ACPI +static const struct acpi_device_id stm_acpi_ids[] = { + {"ARMHC502", 0, 0, 0}, /* ARM CoreSight STM */ + {}, +}; +MODULE_DEVICE_TABLE(acpi, stm_acpi_ids); +#endif + +static struct platform_driver stm_platform_driver = { + .probe = stm_platform_probe, + .remove_new = stm_platform_remove, + .driver = { + .name = "coresight-stm-platform", + .acpi_match_table = ACPI_PTR(stm_acpi_ids), + .suppress_bind_attrs = true, + .pm = &stm_dev_pm_ops, + }, +}; + +static int __init stm_init(void) +{ + return coresight_init_driver("stm", &stm_driver, &stm_platform_driver); +} + +static void __exit stm_exit(void) +{ + coresight_remove_driver(&stm_driver, &stm_platform_driver); +} +module_init(stm_init); +module_exit(stm_exit); MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>"); MODULE_DESCRIPTION("Arm CoreSight System Trace Macrocell driver"); diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c index 72005b0c63..4f11a739ae 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-core.c +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c @@ -4,6 +4,7 @@ * Description: CoreSight Trace Memory Controller driver */ +#include <linux/acpi.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/types.h> @@ -24,6 +25,8 @@ #include <linux/of.h> #include <linux/coresight.h> #include <linux/amba/bus.h> +#include <linux/platform_device.h> +#include <linux/acpi.h> #include "coresight-priv.h" #include "coresight-tmc.h" @@ -360,7 +363,32 @@ static const struct attribute_group *coresight_etr_groups[] = { static inline bool tmc_etr_can_use_sg(struct device *dev) { - return fwnode_property_present(dev->fwnode, "arm,scatter-gather"); + int ret; + u8 val_u8; + + /* + * Presence of the property 'arm,scatter-gather' is checked + * on the platform for the feature support, rather than its + * value. + */ + if (is_of_node(dev->fwnode)) { + return fwnode_property_present(dev->fwnode, "arm,scatter-gather"); + } else if (is_acpi_device_node(dev->fwnode)) { + /* + * TMC_DEVID_NOSCAT test in tmc_etr_setup_caps(), has already ensured + * this property is only checked for Coresight SoC 400 TMC configured + * as ETR. + */ + ret = fwnode_property_read_u8(dev->fwnode, "arm-armhc97c-sg-enable", &val_u8); + if (!ret) + return !!val_u8; + + if (fwnode_property_present(dev->fwnode, "arm,scatter-gather")) { + pr_warn_once("Deprecated ACPI property - arm,scatter-gather\n"); + return true; + } + } + return false; } static inline bool tmc_etr_has_non_secure_access(struct tmc_drvdata *drvdata) @@ -370,16 +398,23 @@ static inline bool tmc_etr_has_non_secure_access(struct tmc_drvdata *drvdata) return (auth & TMC_AUTH_NSID_MASK) == 0x3; } +static const struct amba_id tmc_ids[]; + /* Detect and initialise the capabilities of a TMC ETR */ -static int tmc_etr_setup_caps(struct device *parent, u32 devid, void *dev_caps) +static int tmc_etr_setup_caps(struct device *parent, u32 devid, + struct csdev_access *access) { int rc; - u32 dma_mask = 0; + u32 tmc_pid, dma_mask = 0; struct tmc_drvdata *drvdata = dev_get_drvdata(parent); + void *dev_caps; if (!tmc_etr_has_non_secure_access(drvdata)) return -EACCES; + tmc_pid = coresight_get_pid(access); + dev_caps = coresight_get_uci_data_from_amba(tmc_ids, tmc_pid); + /* Set the unadvertised capabilities */ tmc_etr_init_caps(drvdata, (u32)(unsigned long)dev_caps); @@ -437,24 +472,17 @@ static u32 tmc_etr_get_max_burst_size(struct device *dev) return burst_size; } -static int tmc_probe(struct amba_device *adev, const struct amba_id *id) +static int __tmc_probe(struct device *dev, struct resource *res) { int ret = 0; u32 devid; void __iomem *base; - struct device *dev = &adev->dev; struct coresight_platform_data *pdata = NULL; - struct tmc_drvdata *drvdata; - struct resource *res = &adev->res; + struct tmc_drvdata *drvdata = dev_get_drvdata(dev); struct coresight_desc desc = { 0 }; struct coresight_dev_list *dev_list = NULL; ret = -ENOMEM; - drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); - if (!drvdata) - goto out; - - dev_set_drvdata(dev, drvdata); /* Validity for the resource is already checked by the AMBA core */ base = devm_ioremap_resource(dev, res); @@ -497,8 +525,7 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id) desc.type = CORESIGHT_DEV_TYPE_SINK; desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM; desc.ops = &tmc_etr_cs_ops; - ret = tmc_etr_setup_caps(dev, devid, - coresight_get_uci_data(id)); + ret = tmc_etr_setup_caps(dev, devid, &desc.access); if (ret) goto out; idr_init(&drvdata->idr); @@ -530,7 +557,7 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id) ret = PTR_ERR(pdata); goto out; } - adev->dev.platform_data = pdata; + dev->platform_data = pdata; desc.pdata = pdata; drvdata->csdev = coresight_register(&desc); @@ -545,12 +572,27 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id) ret = misc_register(&drvdata->miscdev); if (ret) coresight_unregister(drvdata->csdev); - else - pm_runtime_put(&adev->dev); out: return ret; } +static int tmc_probe(struct amba_device *adev, const struct amba_id *id) +{ + struct tmc_drvdata *drvdata; + int ret; + + drvdata = devm_kzalloc(&adev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + amba_set_drvdata(adev, drvdata); + ret = __tmc_probe(&adev->dev, &adev->res); + if (!ret) + pm_runtime_put(&adev->dev); + + return ret; +} + static void tmc_shutdown(struct amba_device *adev) { unsigned long flags; @@ -573,9 +615,9 @@ out: spin_unlock_irqrestore(&drvdata->spinlock, flags); } -static void tmc_remove(struct amba_device *adev) +static void __tmc_remove(struct device *dev) { - struct tmc_drvdata *drvdata = dev_get_drvdata(&adev->dev); + struct tmc_drvdata *drvdata = dev_get_drvdata(dev); /* * Since misc_open() holds a refcount on the f_ops, which is @@ -586,6 +628,11 @@ static void tmc_remove(struct amba_device *adev) coresight_unregister(drvdata->csdev); } +static void tmc_remove(struct amba_device *adev) +{ + __tmc_remove(&adev->dev); +} + static const struct amba_id tmc_ids[] = { CS_AMBA_ID(0x000bb961), /* Coresight SoC 600 TMC-ETR/ETS */ @@ -602,7 +649,6 @@ MODULE_DEVICE_TABLE(amba, tmc_ids); static struct amba_driver tmc_driver = { .drv = { .name = "coresight-tmc", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = tmc_probe, @@ -611,7 +657,101 @@ static struct amba_driver tmc_driver = { .id_table = tmc_ids, }; -module_amba_driver(tmc_driver); +static int tmc_platform_probe(struct platform_device *pdev) +{ + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + struct tmc_drvdata *drvdata; + int ret = 0; + + drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + drvdata->pclk = coresight_get_enable_apb_pclk(&pdev->dev); + if (IS_ERR(drvdata->pclk)) + return -ENODEV; + + dev_set_drvdata(&pdev->dev, drvdata); + pm_runtime_get_noresume(&pdev->dev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + ret = __tmc_probe(&pdev->dev, res); + pm_runtime_put(&pdev->dev); + if (ret) + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static void tmc_platform_remove(struct platform_device *pdev) +{ + struct tmc_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (WARN_ON(!drvdata)) + return; + + __tmc_remove(&pdev->dev); + pm_runtime_disable(&pdev->dev); + if (!IS_ERR_OR_NULL(drvdata->pclk)) + clk_put(drvdata->pclk); +} + +#ifdef CONFIG_PM +static int tmc_runtime_suspend(struct device *dev) +{ + struct tmc_drvdata *drvdata = dev_get_drvdata(dev); + + if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_disable_unprepare(drvdata->pclk); + return 0; +} + +static int tmc_runtime_resume(struct device *dev) +{ + struct tmc_drvdata *drvdata = dev_get_drvdata(dev); + + if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk)) + clk_prepare_enable(drvdata->pclk); + return 0; +} +#endif + +static const struct dev_pm_ops tmc_dev_pm_ops = { + SET_RUNTIME_PM_OPS(tmc_runtime_suspend, tmc_runtime_resume, NULL) +}; + +#ifdef CONFIG_ACPI +static const struct acpi_device_id tmc_acpi_ids[] = { + {"ARMHC501", 0, 0, 0}, /* ARM CoreSight ETR */ + {"ARMHC97C", 0, 0, 0}, /* ARM CoreSight SoC-400 TMC, SoC-600 ETF/ETB */ + {}, +}; +MODULE_DEVICE_TABLE(acpi, tmc_acpi_ids); +#endif + +static struct platform_driver tmc_platform_driver = { + .probe = tmc_platform_probe, + .remove_new = tmc_platform_remove, + .driver = { + .name = "coresight-tmc-platform", + .acpi_match_table = ACPI_PTR(tmc_acpi_ids), + .suppress_bind_attrs = true, + .pm = &tmc_dev_pm_ops, + }, +}; + +static int __init tmc_init(void) +{ + return coresight_init_driver("tmc", &tmc_driver, &tmc_platform_driver); +} + +static void __exit tmc_exit(void) +{ + coresight_remove_driver(&tmc_driver, &tmc_platform_driver); +} +module_init(tmc_init); +module_exit(tmc_exit); MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>"); MODULE_DESCRIPTION("Arm CoreSight Trace Memory Controller driver"); diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h index cef979c897..c77763b49d 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.h +++ b/drivers/hwtracing/coresight/coresight-tmc.h @@ -166,6 +166,7 @@ struct etr_buf { /** * struct tmc_drvdata - specifics associated to an TMC component + * @pclk: APB clock if present, otherwise NULL * @base: memory mapped base address for this component. * @csdev: component vitals needed by the framework. * @miscdev: specifics to handle "/dev/xyz.tmc" entry. @@ -189,6 +190,7 @@ struct etr_buf { * @perf_buf: PERF buffer for ETR. */ struct tmc_drvdata { + struct clk *pclk; void __iomem *base; struct coresight_device *csdev; struct miscdevice miscdev; diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c index 7739bc7adc..bfca103f9f 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.c +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -333,7 +333,6 @@ static struct amba_id tpda_ids[] = { static struct amba_driver tpda_driver = { .drv = { .name = "coresight-tpda", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = tpda_probe, diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index a9708ab0d4..0726f88425 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -1310,7 +1310,6 @@ static struct amba_id tpdm_ids[] = { static struct amba_driver tpdm_driver = { .drv = { .name = "coresight-tpdm", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = tpdm_probe, diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index 29024f880f..b048e146fb 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -5,17 +5,19 @@ * Description: CoreSight Trace Port Interface Unit driver */ +#include <linux/acpi.h> +#include <linux/amba/bus.h> #include <linux/atomic.h> -#include <linux/kernel.h> -#include <linux/init.h> +#include <linux/clk.h> +#include <linux/coresight.h> #include <linux/device.h> -#include <linux/io.h> #include <linux/err.h> -#include <linux/slab.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> #include <linux/pm_runtime.h> -#include <linux/coresight.h> -#include <linux/amba/bus.h> -#include <linux/clk.h> +#include <linux/slab.h> #include "coresight-priv.h" @@ -52,11 +54,13 @@ DEFINE_CORESIGHT_DEVLIST(tpiu_devs, "tpiu"); /* * @base: memory mapped base address for this component. * @atclk: optional clock for the core parts of the TPIU. + * @pclk: APB clock if present, otherwise NULL * @csdev: component vitals needed by the framework. */ struct tpiu_drvdata { void __iomem *base; struct clk *atclk; + struct clk *pclk; struct coresight_device *csdev; spinlock_t spinlock; }; @@ -122,14 +126,12 @@ static const struct coresight_ops tpiu_cs_ops = { .sink_ops = &tpiu_sink_ops, }; -static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) +static int __tpiu_probe(struct device *dev, struct resource *res) { int ret; void __iomem *base; - struct device *dev = &adev->dev; struct coresight_platform_data *pdata = NULL; struct tpiu_drvdata *drvdata; - struct resource *res = &adev->res; struct coresight_desc desc = { 0 }; desc.name = coresight_alloc_device_name(&tpiu_devs, dev); @@ -142,12 +144,16 @@ static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) spin_lock_init(&drvdata->spinlock); - drvdata->atclk = devm_clk_get(&adev->dev, "atclk"); /* optional */ + drvdata->atclk = devm_clk_get(dev, "atclk"); /* optional */ if (!IS_ERR(drvdata->atclk)) { ret = clk_prepare_enable(drvdata->atclk); if (ret) return ret; } + + drvdata->pclk = coresight_get_enable_apb_pclk(dev); + if (IS_ERR(drvdata->pclk)) + return -ENODEV; dev_set_drvdata(dev, drvdata); /* Validity for the resource is already checked by the AMBA core */ @@ -173,21 +179,34 @@ static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) desc.dev = dev; drvdata->csdev = coresight_register(&desc); - if (!IS_ERR(drvdata->csdev)) { - pm_runtime_put(&adev->dev); + if (!IS_ERR(drvdata->csdev)) return 0; - } return PTR_ERR(drvdata->csdev); } -static void tpiu_remove(struct amba_device *adev) +static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) { - struct tpiu_drvdata *drvdata = dev_get_drvdata(&adev->dev); + int ret; + + ret = __tpiu_probe(&adev->dev, &adev->res); + if (!ret) + pm_runtime_put(&adev->dev); + return ret; +} + +static void __tpiu_remove(struct device *dev) +{ + struct tpiu_drvdata *drvdata = dev_get_drvdata(dev); coresight_unregister(drvdata->csdev); } +static void tpiu_remove(struct amba_device *adev) +{ + __tpiu_remove(&adev->dev); +} + #ifdef CONFIG_PM static int tpiu_runtime_suspend(struct device *dev) { @@ -196,6 +215,8 @@ static int tpiu_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; } @@ -206,6 +227,8 @@ static int tpiu_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 @@ -236,7 +259,6 @@ MODULE_DEVICE_TABLE(amba, tpiu_ids); static struct amba_driver tpiu_driver = { .drv = { .name = "coresight-tpiu", - .owner = THIS_MODULE, .pm = &tpiu_dev_pm_ops, .suppress_bind_attrs = true, }, @@ -245,7 +267,66 @@ static struct amba_driver tpiu_driver = { .id_table = tpiu_ids, }; -module_amba_driver(tpiu_driver); +static int tpiu_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); + + ret = __tpiu_probe(&pdev->dev, res); + pm_runtime_put(&pdev->dev); + if (ret) + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static void tpiu_platform_remove(struct platform_device *pdev) +{ + struct tpiu_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (WARN_ON(!drvdata)) + return; + + __tpiu_remove(&pdev->dev); + pm_runtime_disable(&pdev->dev); + if (!IS_ERR_OR_NULL(drvdata->pclk)) + clk_put(drvdata->pclk); +} + +#ifdef CONFIG_ACPI +static const struct acpi_device_id tpiu_acpi_ids[] = { + {"ARMHC979", 0, 0, 0}, /* ARM CoreSight TPIU */ + {} +}; +MODULE_DEVICE_TABLE(acpi, tpiu_acpi_ids); +#endif + +static struct platform_driver tpiu_platform_driver = { + .probe = tpiu_platform_probe, + .remove_new = tpiu_platform_remove, + .driver = { + .name = "coresight-tpiu-platform", + .acpi_match_table = ACPI_PTR(tpiu_acpi_ids), + .suppress_bind_attrs = true, + .pm = &tpiu_dev_pm_ops, + }, +}; + +static int __init tpiu_init(void) +{ + return coresight_init_driver("tpiu", &tpiu_driver, &tpiu_platform_driver); +} + +static void __exit tpiu_exit(void) +{ + coresight_remove_driver(&tpiu_driver, &tpiu_platform_driver); +} +module_init(tpiu_init); +module_exit(tpiu_exit); MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>"); MODULE_AUTHOR("Mathieu Poirier <mathieu.poirier@linaro.org>"); diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c index 6136776482..96a32b2136 100644 --- a/drivers/hwtracing/coresight/coresight-trbe.c +++ b/drivers/hwtracing/coresight/coresight-trbe.c @@ -17,6 +17,7 @@ #include <asm/barrier.h> #include <asm/cpufeature.h> +#include <linux/vmalloc.h> #include "coresight-self-hosted-trace.h" #include "coresight-trbe.h" |