From a1d874ef3376295ee8ed89b3b5315f4c840ff00b Mon Sep 17 00:00:00 2001 From: Balsam CHIHI Date: Tue, 17 Oct 2023 21:05:42 +0200 Subject: [PATCH 40/42] thermal/drivers/mediatek/lvts_thermal: Add suspend and resume MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add suspend and resume support to LVTS driver. Signed-off-by: Balsam CHIHI [bero@baylibre.com: suspend/resume in noirq phase] Co-developed-by: Bernhard Rosenkränzer Signed-off-by: Bernhard Rosenkränzer Reviewed-by: Matthias Brugger Reviewed-by: Alexandre Mergnat Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20231017190545.157282-3-bero@baylibre.com --- drivers/thermal/mediatek/lvts_thermal.c | 37 +++++++++++++++++++++++++ 1 file changed, 37 insertions(+) --- a/drivers/thermal/mediatek/lvts_thermal.c +++ b/drivers/thermal/mediatek/lvts_thermal.c @@ -1297,6 +1297,38 @@ static const struct lvts_ctrl_data mt798 } }; +static int lvts_suspend(struct device *dev) +{ + struct lvts_domain *lvts_td; + int i; + + lvts_td = dev_get_drvdata(dev); + + for (i = 0; i < lvts_td->num_lvts_ctrl; i++) + lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], false); + + clk_disable_unprepare(lvts_td->clk); + + return 0; +} + +static int lvts_resume(struct device *dev) +{ + struct lvts_domain *lvts_td; + int i, ret; + + lvts_td = dev_get_drvdata(dev); + + ret = clk_prepare_enable(lvts_td->clk); + if (ret) + return ret; + + for (i = 0; i < lvts_td->num_lvts_ctrl; i++) + lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], true); + + return 0; +} + static const struct lvts_ctrl_data mt8195_lvts_mcu_data_ctrl[] = { { .cal_offset = { 0x04, 0x07 }, @@ -1405,12 +1437,17 @@ static const struct of_device_id lvts_of }; MODULE_DEVICE_TABLE(of, lvts_of_match); +static const struct dev_pm_ops lvts_pm_ops = { + NOIRQ_SYSTEM_SLEEP_PM_OPS(lvts_suspend, lvts_resume) +}; + static struct platform_driver lvts_driver = { .probe = lvts_probe, .remove_new = lvts_remove, .driver = { .name = "mtk-lvts-thermal", .of_match_table = lvts_of_match, + .pm = &lvts_pm_ops, }, }; module_platform_driver(lvts_driver);