From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@roeck-us.net (Guenter Roeck) Date: Mon, 6 Oct 2014 22:28:31 -0700 Subject: [PATCH 29/44] staging: nvec: Register with kernel poweroff handler In-Reply-To: <1412659726-29957-1-git-send-email-linux@roeck-us.net> References: <1412659726-29957-1-git-send-email-linux@roeck-us.net> Message-ID: <1412659726-29957-30-git-send-email-linux@roeck-us.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Register with kernel poweroff handler instead of setting pm_power_off directly. Register with default priority value of 128 since we don't know any better. Cc: Julian Andres Klode Cc: Marc Dietrich Cc: Greg Kroah-Hartman Signed-off-by: Guenter Roeck --- drivers/staging/nvec/nvec.c | 24 +++++++++++++++--------- drivers/staging/nvec/nvec.h | 2 ++ 2 files changed, 17 insertions(+), 9 deletions(-) diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c index a93208a..33d406c 100644 --- a/drivers/staging/nvec/nvec.c +++ b/drivers/staging/nvec/nvec.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -80,8 +81,6 @@ enum nvec_sleep_subcmds { #define LID_SWITCH BIT(1) #define PWR_BUTTON BIT(15) -static struct nvec_chip *nvec_power_handle; - static const struct mfd_cell nvec_devices[] = { { .name = "nvec-kbd", @@ -759,12 +758,17 @@ static void nvec_disable_i2c_slave(struct nvec_chip *nvec) } #endif -static void nvec_power_off(void) +static int nvec_power_off(struct notifier_block *this, unsigned long unused1, + void *unused2) { + struct nvec_chip *nvec = container_of(this, struct nvec_chip, + poweroff_nb); char ap_pwr_down[] = { NVEC_SLEEP, AP_PWR_DOWN }; - nvec_toggle_global_events(nvec_power_handle, false); - nvec_write_async(nvec_power_handle, ap_pwr_down, 2); + nvec_toggle_global_events(nvec, false); + nvec_write_async(nvec, ap_pwr_down, 2); + + return NOTIFY_DONE; } /* @@ -878,8 +882,11 @@ static int tegra_nvec_probe(struct platform_device *pdev) nvec->nvec_status_notifier.notifier_call = nvec_status_notifier; nvec_register_notifier(nvec, &nvec->nvec_status_notifier, 0); - nvec_power_handle = nvec; - pm_power_off = nvec_power_off; + nvec->poweroff_nb.notifier_call = nvec_power_off; + nvec->poweroff_nb.priority = 128; + ret = register_poweroff_handler(&nvec->poweroff_nb); + if (ret) + dev_err(nvec->dev, "Failed to register poweroff handler\n"); /* Get Firmware Version */ msg = nvec_write_sync(nvec, get_firmware_version, 2); @@ -914,13 +921,12 @@ static int tegra_nvec_remove(struct platform_device *pdev) { struct nvec_chip *nvec = platform_get_drvdata(pdev); + unregister_poweroff_handler(&nvec->poweroff_nb); nvec_toggle_global_events(nvec, false); mfd_remove_devices(nvec->dev); nvec_unregister_notifier(nvec, &nvec->nvec_status_notifier); cancel_work_sync(&nvec->rx_work); cancel_work_sync(&nvec->tx_work); - /* FIXME: needs check wether nvec is responsible for power off */ - pm_power_off = NULL; return 0; } diff --git a/drivers/staging/nvec/nvec.h b/drivers/staging/nvec/nvec.h index e271375..e5ee2af 100644 --- a/drivers/staging/nvec/nvec.h +++ b/drivers/staging/nvec/nvec.h @@ -163,6 +163,8 @@ struct nvec_chip { struct nvec_msg *last_sync_msg; int state; + + struct notifier_block poweroff_nb; }; extern int nvec_write_async(struct nvec_chip *nvec, const unsigned char *data, -- 1.9.1