[PATCH] spi: loongson: pm: add .freeze .poweroff .thaw .restore

after execute s4, the spi error,
[ 1104.754246][ 4] [    T1] tpm_tis_spi spi-SMO0768:00: SPI transfer failed: -110
[ 1104.761503][ 4] [    T1] spi_master spi1: failed to transfer one message from queue
[ 1104.769201][ 4] [    T1] spi_master spi1: noqueue transfer failed
[ 1104.776344][ 4] [    T1] tpm_tis_spi spi-SMO0768:00: SPI transfer failed: -110
[ 1104.783609][ 4] [    T1] spi_master spi1: failed to transfer one message from queue
[ 1104.791308][ 4] [    T1] spi_master spi1: noqueue transfer failed
[ 1104.797446][ 4] [    T1] gttadd tpm_chip_start1 ret = -110
and in s4 the loongson_spi_resume&suspend are
not called at all.
add .freeze .poweroff .thaw .restore， after s4 the spi
communication is normal.

Signed-off-by: Li Jun <[email protected]>
---
 drivers/spi/spi-loongson-core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/spi/spi-loongson-core.c b/drivers/spi/spi-loongson-core.c
index 30b6a7176ce9..28962c01c7e4 100644
--- a/drivers/spi/spi-loongson-core.c
+++ b/drivers/spi/spi-loongson-core.c
@@ -271,7 +271,11 @@ static int loongson_spi_resume(struct device *dev)
 
 const struct dev_pm_ops loongson_spi_dev_pm_ops = {
 	.suspend = loongson_spi_suspend,
+	.freeze = loongson_spi_suspend,
+	.poweroff = loongson_spi_suspend,
 	.resume = loongson_spi_resume,
+	.thaw = loongson_spi_resume,
+	.restore = loongson_spi_resume,
 };
 EXPORT_SYMBOL_NS_GPL(loongson_spi_dev_pm_ops, "SPI_LOONGSON_CORE");
 
-- 
2.25.1