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platform/x86: intel_pmc_core: Convert to a platform_driver

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Convert the intel_pmc_core driver to a platform driver. There is no
functional change to the driver, or to the way the devices are
instantiated.

Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Rajat Jain 2019-04-17 16:01:53 -07:00 committed by Andy Shevchenko
parent 9b9f2f5416
commit 6c96a78c7b
1 changed files with 57 additions and 8 deletions
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65
drivers/platform/x86/intel_pmc_core.c
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@ -19,6 +19,7 @@
#include <linux/io.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <asm/cpu_device_id.h>
@ -854,13 +855,17 @@ static const struct dmi_system_id pmc_core_dmi_table[] = {
{}
};
static int __init pmc_core_probe(void)
static int pmc_core_probe(struct platform_device *pdev)
{
static bool device_initialized;
struct pmc_dev *pmcdev = &pmc;
const struct x86_cpu_id *cpu_id;
u64 slp_s0_addr;
int err;
if (device_initialized)
return -ENODEV;
cpu_id = x86_match_cpu(intel_pmc_core_ids);
if (!cpu_id)
return -ENODEV;
@ -886,30 +891,74 @@ static int __init pmc_core_probe(void)
return -ENOMEM;
mutex_init(&pmcdev->lock);
platform_set_drvdata(pdev, pmcdev);
pmcdev->pmc_xram_read_bit = pmc_core_check_read_lock_bit();
dmi_check_system(pmc_core_dmi_table);
err = pmc_core_dbgfs_register(pmcdev);
if (err < 0) {
pr_warn(" debugfs register failed.\n");
dev_warn(&pdev->dev, "debugfs register failed.\n");
iounmap(pmcdev->regbase);
return err;
}
dmi_check_system(pmc_core_dmi_table);
pr_info(" initialized\n");
device_initialized = true;
dev_info(&pdev->dev, " initialized\n");
return 0;
}
module_init(pmc_core_probe)
static void __exit pmc_core_remove(void)
static int pmc_core_remove(struct platform_device *pdev)
{
struct pmc_dev *pmcdev = &pmc;
struct pmc_dev *pmcdev = platform_get_drvdata(pdev);
pmc_core_dbgfs_unregister(pmcdev);
platform_set_drvdata(pdev, NULL);
mutex_destroy(&pmcdev->lock);
iounmap(pmcdev->regbase);
return 0;
}
module_exit(pmc_core_remove)
static struct platform_driver pmc_core_driver = {
.driver = {
.name = "intel_pmc_core",
},
.probe = pmc_core_probe,
.remove = pmc_core_remove,
};
static struct platform_device pmc_core_device = {
.name = "intel_pmc_core",
};
static int __init pmc_core_init(void)
{
int ret;
if (!x86_match_cpu(intel_pmc_core_ids))
return -ENODEV;
ret = platform_driver_register(&pmc_core_driver);
if (ret)
return ret;
ret = platform_device_register(&pmc_core_device);
if (ret) {
platform_driver_unregister(&pmc_core_driver);
return ret;
}
return 0;
}
static void __exit pmc_core_exit(void)
{
platform_device_unregister(&pmc_core_device);
platform_driver_unregister(&pmc_core_driver);
}
module_init(pmc_core_init)
module_exit(pmc_core_exit)
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel PMC Core Driver");