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platform/chrome: wilco_ec: Add charging config driver

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Add a device to control the charging algorithm used on Wilco devices,
which will be picked up by the drivers/power/supply/wilco-charger.c
driver. See Documentation/ABI/testing/sysfs-class-power-wilco for the
userspace interface and other info.

Signed-off-by: Nick Crews <ncrews@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
This commit is contained in:
Nick Crews 2019-10-24 16:28:05 -06:00 committed by Enric Balletbo i Serra
parent fdf0fe2df3
commit 3c4d77b689
2 changed files with 16 additions and 1 deletions
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15
drivers/platform/chrome/wilco_ec/core.c
View File

@ -93,6 +93,16 @@ static int wilco_ec_probe(struct platform_device *pdev)
goto unregister_rtc;
}
/* Register child device to be found by charger config driver. */
ec->charger_pdev = platform_device_register_data(dev, "wilco-charger",
PLATFORM_DEVID_AUTO,
NULL, 0);
if (IS_ERR(ec->charger_pdev)) {
dev_err(dev, "Failed to create charger platform device\n");
ret = PTR_ERR(ec->charger_pdev);
goto remove_sysfs;
}
/* Register child device that will be found by the telemetry driver. */
ec->telem_pdev = platform_device_register_data(dev, "wilco_telem",
PLATFORM_DEVID_AUTO,
@ -100,11 +110,13 @@ static int wilco_ec_probe(struct platform_device *pdev)
if (IS_ERR(ec->telem_pdev)) {
dev_err(dev, "Failed to create telemetry platform device\n");
ret = PTR_ERR(ec->telem_pdev);
goto remove_sysfs;
goto unregister_charge_config;
}
return 0;
unregister_charge_config:
platform_device_unregister(ec->charger_pdev);
remove_sysfs:
wilco_ec_remove_sysfs(ec);
unregister_rtc:
@ -120,6 +132,7 @@ static int wilco_ec_remove(struct platform_device *pdev)
{
struct wilco_ec_device *ec = platform_get_drvdata(pdev);
platform_device_unregister(ec->charger_pdev);
wilco_ec_remove_sysfs(ec);
platform_device_unregister(ec->telem_pdev);
platform_device_unregister(ec->rtc_pdev);

2
include/linux/platform_data/wilco-ec.h
View File

@ -29,6 +29,7 @@
* @data_size: Size of the data buffer used for EC communication.
* @debugfs_pdev: The child platform_device used by the debugfs sub-driver.
* @rtc_pdev: The child platform_device used by the RTC sub-driver.
* @charger_pdev: Child platform_device used by the charger config sub-driver.
* @telem_pdev: The child platform_device used by the telemetry sub-driver.
*/
struct wilco_ec_device {
@ -41,6 +42,7 @@ struct wilco_ec_device {
size_t data_size;
struct platform_device *debugfs_pdev;
struct platform_device *rtc_pdev;
struct platform_device *charger_pdev;
struct platform_device *telem_pdev;
};