diff options
| author |   Sean Wang <sean.wang@mediatek.com> | 2016-09-14 23:13:18 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-09-16 02:22:57 -0400 |
| commit | 26a2ad8a5418525d21f06083e65b10c932633209 (patch) | |
| tree | e480b438f50bded0e43e85f409c53e768ab84d41 /drivers/net/ethernet/mediatek | |
| parent | net: ethernet: mediatek: cleanup error path inside mtk_hw_init (diff) | |
| download | linux-dev-26a2ad8a5418525d21f06083e65b10c932633209.tar.xz linux-dev-26a2ad8a5418525d21f06083e65b10c932633209.zip | |
net: ethernet: mediatek: add controlling power domain the ethernet belongs to
introduce power domain control which the digital circuit of
the ethernet belongs to inside the flow of hardware initialization
and deinitialization which helps the entire ethernet hardware block
could restart cleanly and completely as being back to the initial
state when the whole machine reboot.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mediatek')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 1272316a7d7b..01f59115132c 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -18,6 +18,7 @@ #include <linux/mfd/syscon.h> #include <linux/regmap.h> #include <linux/clk.h> +#include <linux/pm_runtime.h> #include <linux/if_vlan.h> #include <linux/reset.h> #include <linux/tcp.h> @@ -1417,6 +1418,9 @@ static int __init mtk_hw_init(struct mtk_eth *eth) { int i; + pm_runtime_enable(eth->dev); + pm_runtime_get_sync(eth->dev); + clk_prepare_enable(eth->clks[MTK_CLK_ETHIF]); clk_prepare_enable(eth->clks[MTK_CLK_ESW]); clk_prepare_enable(eth->clks[MTK_CLK_GP1]); @@ -1484,6 +1488,9 @@ static int mtk_hw_deinit(struct mtk_eth *eth) clk_disable_unprepare(eth->clks[MTK_CLK_ESW]); clk_disable_unprepare(eth->clks[MTK_CLK_ETHIF]); + pm_runtime_put_sync(eth->dev); + pm_runtime_disable(eth->dev); + return 0; } |