[PATCH net-next v2 4/7] net: ethernet: mediatek: add controlling power domain the ethernet belongs to
flat view
STALE3683d
From: <sean.wang@mediatek.com>
Date: 2016-09-14 15:13:32
Also in:
linux-mediatek
Subsystem:
mediatek ethernet driver, networking drivers, the rest · Maintainers:
Felix Fietkau, Lorenzo Bianconi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v2 of 2 in this series.
Revisions (2)
- v1 [diff vs current]
- v2 current
From: Sean Wang <sean.wang@mediatek.com> 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> --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 917a49c6..fd5d064 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; }
--
1.9.1