[PATCH net-next 0/4] stmmac: dwmac-rk: convert to standard PM/remove functions

[PATCH net-next 0/4] stmmac: dwmac-rk: convert to standard PM/remove functions

[Joachim Eastwood]

This patch set aims to remove the init/exit callbacks from the 
dwmac-rk driver and instead use standard PM callbacks. Eventually
the init/exit callbacks will be deprecated and removed from all
drivers dwmac-* except for dwmac-generic. Drivers will be refactored
to use standard PM and remove callbacks.

This conversion was pretty straight forward, but it would really nice
if some chromium people could test suspend/resume with this patch set.


Joachim Eastwood (4):
  stmmac: dwmac-rk: turn resume/suspend into standard PM callbacks
  stmmac: dwmac-rk: turn exit into standard driver remove callback
  stmmac: dwmac-rk: absorb rk_gmac_init into probe
  Revert "net: stmmac: allow to split suspend/resume from init/exit callbacks"

 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c     | 89 +++++++++++-----------
 .../net/ethernet/stmicro/stmmac/stmmac_platform.c  |  8 +-
 include/linux/stmmac.h                             |  2 -
 3 files changed, 46 insertions(+), 53 deletions(-)

-- 
2.10.2

[PATCH net-next 1/4] stmmac: dwmac-rk: turn resume/suspend into standard PM callbacks

[Joachim Eastwood]

Use standard PM resume/suspend callbacks instead of the hooks in
stmmac_platform. This gives the driver more control and flexibility
when implementing PM functionality. The hooks in stmmac_platform
also doesn't buy us anything extra.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 59 ++++++++++++++------------
 1 file changed, 32 insertions(+), 27 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 3740a44..d91acd5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -915,30 +915,6 @@ static void rk_gmac_exit(struct platform_device *pdev, void *priv)
 	rk_gmac_powerdown(bsp_priv);
 }
 
-static void rk_gmac_suspend(struct platform_device *pdev, void *priv)
-{
-	struct rk_priv_data *bsp_priv = priv;
-
-	/* Keep the PHY up if we use Wake-on-Lan. */
-	if (device_may_wakeup(&pdev->dev))
-		return;
-
-	rk_gmac_powerdown(bsp_priv);
-	bsp_priv->suspended = true;
-}
-
-static void rk_gmac_resume(struct platform_device *pdev, void *priv)
-{
-	struct rk_priv_data *bsp_priv = priv;
-
-	/* The PHY was up for Wake-on-Lan. */
-	if (!bsp_priv->suspended)
-		return;
-
-	rk_gmac_powerup(bsp_priv);
-	bsp_priv->suspended = false;
-}
-
 static void rk_fix_speed(void *priv, unsigned int speed)
 {
 	struct rk_priv_data *bsp_priv = priv;
@@ -977,8 +953,6 @@ static int rk_gmac_probe(struct platform_device *pdev)
 	plat_dat->init = rk_gmac_init;
 	plat_dat->exit = rk_gmac_exit;
 	plat_dat->fix_mac_speed = rk_fix_speed;
-	plat_dat->suspend = rk_gmac_suspend;
-	plat_dat->resume = rk_gmac_resume;
 
 	plat_dat->bsp_priv = rk_gmac_setup(pdev, data);
 	if (IS_ERR(plat_dat->bsp_priv))
@@ -991,6 +965,37 @@ static int rk_gmac_probe(struct platform_device *pdev)
 	return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int rk_gmac_suspend(struct device *dev)
+{
+	struct rk_priv_data *bsp_priv = get_stmmac_bsp_priv(dev);
+	int ret = stmmac_suspend(dev);
+
+	/* Keep the PHY up if we use Wake-on-Lan. */
+	if (!device_may_wakeup(dev)) {
+		rk_gmac_powerdown(bsp_priv);
+		bsp_priv->suspended = true;
+	}
+
+	return ret;
+}
+
+static int rk_gmac_resume(struct device *dev)
+{
+	struct rk_priv_data *bsp_priv = get_stmmac_bsp_priv(dev);
+
+	/* The PHY was up for Wake-on-Lan. */
+	if (bsp_priv->suspended) {
+		rk_gmac_powerup(bsp_priv);
+		bsp_priv->suspended = false;
+	}
+
+	return stmmac_resume(dev);
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(rk_gmac_pm_ops, rk_gmac_suspend, rk_gmac_resume);
+
 static const struct of_device_id rk_gmac_dwmac_match[] = {
 	{ .compatible = "rockchip,rk3228-gmac", .data = &rk3228_ops },
 	{ .compatible = "rockchip,rk3288-gmac", .data = &rk3288_ops },
@@ -1006,7 +1011,7 @@ static struct platform_driver rk_gmac_dwmac_driver = {
 	.remove = stmmac_pltfr_remove,
 	.driver = {
 		.name           = "rk_gmac-dwmac",
-		.pm		= &stmmac_pltfr_pm_ops,
+		.pm		= &rk_gmac_pm_ops,
 		.of_match_table = rk_gmac_dwmac_match,
 	},
 };
-- 
2.10.2

[PATCH net-next 2/4] stmmac: dwmac-rk: turn exit into standard driver remove callback

[Joachim Eastwood]

Convert the exit hook into a standard driver remove function as
the hook doesn't really buy us anything extra.

Eventually the exit hook will be deprecated in favor of the driver
remove function.

Signed-off-by: Joachim Eastwood <manabian-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index d91acd5..8506881 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -908,13 +908,6 @@ static int rk_gmac_init(struct platform_device *pdev, void *priv)
 	return rk_gmac_powerup(bsp_priv);
 }
 
-static void rk_gmac_exit(struct platform_device *pdev, void *priv)
-{
-	struct rk_priv_data *bsp_priv = priv;
-
-	rk_gmac_powerdown(bsp_priv);
-}
-
 static void rk_fix_speed(void *priv, unsigned int speed)
 {
 	struct rk_priv_data *bsp_priv = priv;
@@ -951,7 +944,6 @@ static int rk_gmac_probe(struct platform_device *pdev)
 
 	plat_dat->has_gmac = true;
 	plat_dat->init = rk_gmac_init;
-	plat_dat->exit = rk_gmac_exit;
 	plat_dat->fix_mac_speed = rk_fix_speed;
 
 	plat_dat->bsp_priv = rk_gmac_setup(pdev, data);
@@ -965,6 +957,16 @@ static int rk_gmac_probe(struct platform_device *pdev)
 	return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 }
 
+static int rk_gmac_remove(struct platform_device *pdev)
+{
+	struct rk_priv_data *bsp_priv = get_stmmac_bsp_priv(&pdev->dev);
+	int ret = stmmac_dvr_remove(&pdev->dev);
+
+	rk_gmac_powerdown(bsp_priv);
+
+	return ret;
+}
+
 #ifdef CONFIG_PM_SLEEP
 static int rk_gmac_suspend(struct device *dev)
 {
@@ -1008,7 +1010,7 @@ MODULE_DEVICE_TABLE(of, rk_gmac_dwmac_match);
 
 static struct platform_driver rk_gmac_dwmac_driver = {
 	.probe  = rk_gmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove = rk_gmac_remove,
 	.driver = {
 		.name           = "rk_gmac-dwmac",
 		.pm		= &rk_gmac_pm_ops,
-- 
2.10.2

[PATCH net-next 3/4] stmmac: dwmac-rk: absorb rk_gmac_init into probe

[Joachim Eastwood]

Since the rk_gmac_init() only calls another function move this
function call into probe so rk_gmac_init() can be removed.

Since commit cecbc5563a02 ("stmmac: allow to split suspend/resume
from init/exit callbacks") the init hook is no longer used in
dwmac-rk so this can be removed.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 8506881..6b787d7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -901,13 +901,6 @@ static void rk_gmac_powerdown(struct rk_priv_data *gmac)
 	gmac_clk_enable(gmac, false);
 }
 
-static int rk_gmac_init(struct platform_device *pdev, void *priv)
-{
-	struct rk_priv_data *bsp_priv = priv;
-
-	return rk_gmac_powerup(bsp_priv);
-}
-
 static void rk_fix_speed(void *priv, unsigned int speed)
 {
 	struct rk_priv_data *bsp_priv = priv;
@@ -943,14 +936,13 @@ static int rk_gmac_probe(struct platform_device *pdev)
 		return PTR_ERR(plat_dat);
 
 	plat_dat->has_gmac = true;
-	plat_dat->init = rk_gmac_init;
 	plat_dat->fix_mac_speed = rk_fix_speed;
 
 	plat_dat->bsp_priv = rk_gmac_setup(pdev, data);
 	if (IS_ERR(plat_dat->bsp_priv))
 		return PTR_ERR(plat_dat->bsp_priv);
 
-	ret = rk_gmac_init(pdev, plat_dat->bsp_priv);
+	ret = rk_gmac_powerup(plat_dat->bsp_priv);
 	if (ret)
 		return ret;
 
-- 
2.10.2

[PATCH net-next 4/4] Revert "net: stmmac: allow to split suspend/resume from init/exit callbacks"

[Joachim Eastwood]

Instead of adding hooks inside stmmac_platform it is better to just use
the standard PM callbacks within the specific dwmac-driver. This only
used by the dwmac-rk driver.

This reverts commit cecbc5563a02 ("stmmac: allow to split suspend/resume
from init/exit callbacks").

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 8 ++------
 include/linux/stmmac.h                                | 2 --
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 0a0d6a8..4d544c3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -417,9 +417,7 @@ static int stmmac_pltfr_suspend(struct device *dev)
 	struct platform_device *pdev = to_platform_device(dev);
 
 	ret = stmmac_suspend(dev);
-	if (priv->plat->suspend)
-		priv->plat->suspend(pdev, priv->plat->bsp_priv);
-	else if (priv->plat->exit)
+	if (priv->plat->exit)
 		priv->plat->exit(pdev, priv->plat->bsp_priv);
 
 	return ret;
@@ -438,9 +436,7 @@ static int stmmac_pltfr_resume(struct device *dev)
 	struct stmmac_priv *priv = netdev_priv(ndev);
 	struct platform_device *pdev = to_platform_device(dev);
 
-	if (priv->plat->resume)
-		priv->plat->resume(pdev, priv->plat->bsp_priv);
-	else if (priv->plat->init)
+	if (priv->plat->init)
 		priv->plat->init(pdev, priv->plat->bsp_priv);
 
 	return stmmac_resume(dev);
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 705840e..3537fb3 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -135,8 +135,6 @@ struct plat_stmmacenet_data {
 	void (*bus_setup)(void __iomem *ioaddr);
 	int (*init)(struct platform_device *pdev, void *priv);
 	void (*exit)(struct platform_device *pdev, void *priv);
-	void (*suspend)(struct platform_device *pdev, void *priv);
-	void (*resume)(struct platform_device *pdev, void *priv);
 	void *bsp_priv;
 	struct stmmac_axi *axi;
 	int has_gmac4;
-- 
2.10.2

Re: [PATCH net-next 0/4] stmmac: dwmac-rk: convert to standard PM/remove functions

[David Miller]

From: Joachim Eastwood <manabian@gmail.com>
Date: Sat,  5 Nov 2016 14:04:48 +0100

> This patch set aims to remove the init/exit callbacks from the 
> dwmac-rk driver and instead use standard PM callbacks. Eventually
> the init/exit callbacks will be deprecated and removed from all
> drivers dwmac-* except for dwmac-generic. Drivers will be refactored
> to use standard PM and remove callbacks.
> 
> This conversion was pretty straight forward, but it would really nice
> if some chromium people could test suspend/resume with this patch set.

Series applied, thank you.

Re: [PATCH net-next 0/4] stmmac: dwmac-rk: convert to standard PM/remove functions

[Heiko Stuebner]

Am Samstag, 5. November 2016, 14:04:48 CET schrieb Joachim Eastwood:
> This patch set aims to remove the init/exit callbacks from the
> dwmac-rk driver and instead use standard PM callbacks. Eventually
> the init/exit callbacks will be deprecated and removed from all
> drivers dwmac-* except for dwmac-generic. Drivers will be refactored
> to use standard PM and remove callbacks.
> 
> This conversion was pretty straight forward, but it would really nice
> if some chromium people could test suspend/resume with this patch set.

while I couldn't test suspens/resume specifically, I at least can confirm that 
regular probing + usage still works :-)

Dave already applied the series, but anyway
Tested-by: Heiko Stuebner <heiko@sntech.de>

Heiko