diff options
| author |   Eugen Hristev <eugen.hristev@microchip.com> | 2019-09-09 14:12:29 +0000 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-12 10:35:51 +0100 |
| commit | 8692b047e86cff448af1564a8bdda770d2deb567 (patch) | |
| tree | 48cce7ca6e2682e8c154760521b9b7feed7ad149 /drivers/staging | |
| parent | staging: dt-bindings: wilc1000: add optional rtc_clk property (diff) | |
| download | linux-dev-8692b047e86cff448af1564a8bdda770d2deb567.tar.xz linux-dev-8692b047e86cff448af1564a8bdda770d2deb567.zip | |
staging: wilc1000: look for rtc_clk clock
If rtc_clk is provided from DT, use it and enable it.
This is optional.
The signal may be hardcoded and no need to be requested,
but if DT provides it, use it.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Acked-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/1568037993-4646-2-git-send-email-eugen.hristev@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/wilc1000/wilc_sdio.c | 14 | ||||
| -rw-r--r-- | drivers/staging/wilc1000/wilc_wfi_netdevice.h | 1 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/staging/wilc1000/wilc_sdio.c b/drivers/staging/wilc1000/wilc_sdio.c index 2f9aa36e0114..c787c5da8f2b 100644 --- a/drivers/staging/wilc1000/wilc_sdio.c +++ b/drivers/staging/wilc1000/wilc_sdio.c @@ -4,6 +4,7 @@ * All rights reserved. */ +#include <linux/clk.h> #include <linux/mmc/sdio_func.h> #include <linux/mmc/host.h> @@ -151,6 +152,12 @@ static int wilc_sdio_probe(struct sdio_func *func, wilc->dev = &func->dev; wilc->gpio_irq = gpio; + wilc->rtc_clk = devm_clk_get(&func->card->dev, "rtc_clk"); + if (PTR_ERR_OR_ZERO(wilc->rtc_clk) == -EPROBE_DEFER) + return -EPROBE_DEFER; + else if (!IS_ERR(wilc->rtc_clk)) + clk_prepare_enable(wilc->rtc_clk); + dev_info(&func->dev, "Driver Initializing success\n"); return 0; } @@ -162,6 +169,10 @@ static void wilc_sdio_remove(struct sdio_func *func) /* free the GPIO in module remove */ if (wilc->gpio_irq) gpiod_put(wilc->gpio_irq); + + if (!IS_ERR(wilc->rtc_clk)) + clk_disable_unprepare(wilc->rtc_clk); + wilc_netdev_cleanup(wilc); } @@ -193,6 +204,9 @@ static int wilc_sdio_suspend(struct device *dev) dev_info(dev, "sdio suspend\n"); chip_wakeup(wilc); + if (!IS_ERR(wilc->rtc_clk)) + clk_disable_unprepare(wilc->rtc_clk); + if (wilc->suspend_event) { host_sleep_notify(wilc); chip_allow_sleep(wilc); diff --git a/drivers/staging/wilc1000/wilc_wfi_netdevice.h b/drivers/staging/wilc1000/wilc_wfi_netdevice.h index 7e7ce9471f67..978a8bdbfc40 100644 --- a/drivers/staging/wilc1000/wilc_wfi_netdevice.h +++ b/drivers/staging/wilc1000/wilc_wfi_netdevice.h @@ -216,6 +216,7 @@ struct wilc { int io_type; s8 mac_status; struct gpio_desc *gpio_irq; + struct clk *rtc_clk; bool initialized; int dev_irq_num; int close; |