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However, the m_can pins are able to wakeup the system from states where the MCU domain is OFF through its out-of-band wakeup functionality. Introduce the ti,am62-m_can compatible with match data to identify the out-of-band wakeup capability for TI AM62 SoCs. During suspend, set the out-of-band wakeup flag when the device is configured as a wakeup source, the "wakeup" pinctrl state is present, and the match data indicates out-of-band wakeup support. Signed-off-by: Kendall Willis --- drivers/net/can/m_can/m_can.c | 7 ++++++- drivers/net/can/m_can/m_can.h | 4 ++++ drivers/net/can/m_can/m_can_platform.c | 5 +++++ 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c index 16f80607e150e2ca2950616ff2c39b7aa13710b4..0788816d881ef8ba84ad5a84a6d2d3e60517ea7a 100644 --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -2598,6 +2598,7 @@ int m_can_class_suspend(struct device *dev) { struct m_can_classdev *cdev = dev_get_drvdata(dev); struct net_device *ndev = cdev->net; + const struct m_can_pdata *pdata = of_device_get_match_data(dev); int ret = 0; if (netif_running(ndev)) { @@ -2622,8 +2623,12 @@ int m_can_class_suspend(struct device *dev) cdev->can.state = CAN_STATE_SLEEPING; } - if (!m_can_class_wakeup_pinctrl_enabled(cdev)) + if (m_can_class_wakeup_pinctrl_enabled(cdev)) { + if (pdata && pdata->out_band_wakeup) + device_set_out_band_wakeup(dev); + } else { pinctrl_pm_select_sleep_state(dev); + } return ret; } diff --git a/drivers/net/can/m_can/m_can.h b/drivers/net/can/m_can/m_can.h index 4743342b2fba3823819b9e2bc5b085cc0fe6d1e2..486d808bc677482acf446b1450c3a9b6b7405178 100644 --- a/drivers/net/can/m_can/m_can.h +++ b/drivers/net/can/m_can/m_can.h @@ -134,6 +134,10 @@ struct m_can_classdev { struct pinctrl_state *pinctrl_state_wakeup; }; +struct m_can_pdata { + bool out_band_wakeup; +}; + struct m_can_classdev *m_can_class_allocate_dev(struct device *dev, int sizeof_priv); void m_can_class_free_dev(struct net_device *net); int m_can_class_register(struct m_can_classdev *cdev); diff --git a/drivers/net/can/m_can/m_can_platform.c b/drivers/net/can/m_can/m_can_platform.c index 56da411878af0185ff9cc512e325137428a68255..ae2d89b65fe8da65b1ca73cbf80cd8ee8483e2e8 100644 --- a/drivers/net/can/m_can/m_can_platform.c +++ b/drivers/net/can/m_can/m_can_platform.c @@ -218,8 +218,13 @@ static const struct dev_pm_ops m_can_pmops = { SET_SYSTEM_SLEEP_PM_OPS(m_can_suspend, m_can_resume) }; +static const struct m_can_pdata m_can_plat_am62 = { + .out_band_wakeup = true, +}; + static const struct of_device_id m_can_of_table[] = { { .compatible = "bosch,m_can", .data = NULL }, + { .compatible = "ti,am62-m_can", .data = &m_can_plat_am62 }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, m_can_of_table); -- 2.34.1