| Message ID | 20220713101002.10970-2-biao.huang@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | stmmac: dwmac-mediatek: fix clock issue | expand |
On 13/07/2022 12:10, Biao Huang wrote: > The pm_runtime takes care of the clock handling in current > stmmac drivers, and dwmac-mediatek implement the > mediatek_dwmac_clks_config() as the callback for pm_runtime. > > Then, stripping duplicated clocks handling in old init()/exit() > to fix clock issue in suspend/resume test. > > As to clocks in probe/remove, vendor need symmetric handling to > ensure clocks balance. > > Test pass, including suspend/resume and ko insertion/remove. > > Fixes: 3186bdad97d5 ("stmmac: dwmac-mediatek: add platform level clocks management") > Signed-off-by: Biao Huang <biao.huang@mediatek.com> > --- > .../ethernet/stmicro/stmmac/dwmac-mediatek.c | 49 ++++++++----------- > 1 file changed, 21 insertions(+), 28 deletions(-) > > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > index 6ff88df58767..ca8ab290013c 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > @@ -576,32 +576,7 @@ static int mediatek_dwmac_init(struct platform_device *pdev, void *priv) > } > } > > - ret = clk_bulk_prepare_enable(variant->num_clks, plat->clks); > - if (ret) { > - dev_err(plat->dev, "failed to enable clks, err = %d\n", ret); > - return ret; > - } > - > - ret = clk_prepare_enable(plat->rmii_internal_clk); > - if (ret) { > - dev_err(plat->dev, "failed to enable rmii internal clk, err = %d\n", ret); > - goto err_clk; > - } > - > return 0; > - > -err_clk: > - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); > - return ret; > -} > - > -static void mediatek_dwmac_exit(struct platform_device *pdev, void *priv) > -{ > - struct mediatek_dwmac_plat_data *plat = priv; > - const struct mediatek_dwmac_variant *variant = plat->variant; > - > - clk_disable_unprepare(plat->rmii_internal_clk); > - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); > } > > static int mediatek_dwmac_clks_config(void *priv, bool enabled) > @@ -643,7 +618,6 @@ static int mediatek_dwmac_common_data(struct platform_device *pdev, > plat->addr64 = priv_plat->variant->dma_bit_mask; > plat->bsp_priv = priv_plat; > plat->init = mediatek_dwmac_init; > - plat->exit = mediatek_dwmac_exit; > plat->clks_config = mediatek_dwmac_clks_config; > if (priv_plat->variant->dwmac_fix_mac_speed) > plat->fix_mac_speed = priv_plat->variant->dwmac_fix_mac_speed; > @@ -712,13 +686,32 @@ static int mediatek_dwmac_probe(struct platform_device *pdev) > mediatek_dwmac_common_data(pdev, plat_dat, priv_plat); > mediatek_dwmac_init(pdev, priv_plat); > > + ret = mediatek_dwmac_clks_config(priv_plat, true); > + if (ret) > + return ret; > + > ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); > if (ret) { > stmmac_remove_config_dt(pdev, plat_dat); > - return ret; > + goto err_drv_probe; > } > > return 0; > + > +err_drv_probe: > + mediatek_dwmac_clks_config(priv_plat, false); > + return ret; > +} > + > +static int mediatek_dwmac_remove(struct platform_device *pdev) > +{ > + struct mediatek_dwmac_plat_data *priv_plat = get_stmmac_bsp_priv(&pdev->dev); > + int ret; > + > + ret = stmmac_pltfr_remove(pdev); > + mediatek_dwmac_clks_config(priv_plat, false); > + We enalbe the clocks after calling stmmac_probe_config_dt(), so we should disable them before calling stmmac_pltfr_remove(), correct? Other then that: Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> > + return ret; > } > > static const struct of_device_id mediatek_dwmac_match[] = { > @@ -733,7 +726,7 @@ MODULE_DEVICE_TABLE(of, mediatek_dwmac_match); > > static struct platform_driver mediatek_dwmac_driver = { > .probe = mediatek_dwmac_probe, > - .remove = stmmac_pltfr_remove, > + .remove = mediatek_dwmac_remove, > .driver = { > .name = "dwmac-mediatek", > .pm = &stmmac_pltfr_pm_ops,
Dear Matthias, Thanks for your comments~ On Wed, 2022-07-13 at 14:11 +0200, Matthias Brugger wrote: > > On 13/07/2022 12:10, Biao Huang wrote: > > The pm_runtime takes care of the clock handling in current > > stmmac drivers, and dwmac-mediatek implement the > > mediatek_dwmac_clks_config() as the callback for pm_runtime. > > > > Then, stripping duplicated clocks handling in old init()/exit() > > to fix clock issue in suspend/resume test. > > > > As to clocks in probe/remove, vendor need symmetric handling to > > ensure clocks balance. > > > > Test pass, including suspend/resume and ko insertion/remove. > > > > Fixes: 3186bdad97d5 ("stmmac: dwmac-mediatek: add platform level > > clocks management") > > Signed-off-by: Biao Huang <biao.huang@mediatek.com> > > --- > > .../ethernet/stmicro/stmmac/dwmac-mediatek.c | 49 ++++++++---- > > ------- > > 1 file changed, 21 insertions(+), 28 deletions(-) > > > > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > > b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > > index 6ff88df58767..ca8ab290013c 100644 > > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > > @@ -576,32 +576,7 @@ static int mediatek_dwmac_init(struct > > platform_device *pdev, void *priv) > > } > > } > > > > - ret = clk_bulk_prepare_enable(variant->num_clks, plat->clks); > > - if (ret) { > > - dev_err(plat->dev, "failed to enable clks, err = %d\n", > > ret); > > - return ret; > > - } > > - > > - ret = clk_prepare_enable(plat->rmii_internal_clk); > > - if (ret) { > > - dev_err(plat->dev, "failed to enable rmii internal clk, > > err = %d\n", ret); > > - goto err_clk; > > - } > > - > > return 0; > > - > > -err_clk: > > - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); > > - return ret; > > -} > > - > > -static void mediatek_dwmac_exit(struct platform_device *pdev, void > > *priv) > > -{ > > - struct mediatek_dwmac_plat_data *plat = priv; > > - const struct mediatek_dwmac_variant *variant = plat->variant; > > - > > - clk_disable_unprepare(plat->rmii_internal_clk); > > - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); > > } > > > > static int mediatek_dwmac_clks_config(void *priv, bool enabled) > > @@ -643,7 +618,6 @@ static int mediatek_dwmac_common_data(struct > > platform_device *pdev, > > plat->addr64 = priv_plat->variant->dma_bit_mask; > > plat->bsp_priv = priv_plat; > > plat->init = mediatek_dwmac_init; > > - plat->exit = mediatek_dwmac_exit; > > plat->clks_config = mediatek_dwmac_clks_config; > > if (priv_plat->variant->dwmac_fix_mac_speed) > > plat->fix_mac_speed = priv_plat->variant- > > >dwmac_fix_mac_speed; > > @@ -712,13 +686,32 @@ static int mediatek_dwmac_probe(struct > > platform_device *pdev) > > mediatek_dwmac_common_data(pdev, plat_dat, priv_plat); > > mediatek_dwmac_init(pdev, priv_plat); > > > > + ret = mediatek_dwmac_clks_config(priv_plat, true); > > + if (ret) > > + return ret; > > + > > ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); > > if (ret) { > > stmmac_remove_config_dt(pdev, plat_dat); > > - return ret; > > + goto err_drv_probe; > > } > > > > return 0; > > + > > +err_drv_probe: > > + mediatek_dwmac_clks_config(priv_plat, false); > > + return ret; > > +} > > + > > +static int mediatek_dwmac_remove(struct platform_device *pdev) > > +{ > > + struct mediatek_dwmac_plat_data *priv_plat = > > get_stmmac_bsp_priv(&pdev->dev); > > + int ret; > > + > > + ret = stmmac_pltfr_remove(pdev); > > + mediatek_dwmac_clks_config(priv_plat, false); > > + > > We enalbe the clocks after calling stmmac_probe_config_dt(), so we > should > disable them before calling stmmac_pltfr_remove(), correct? > > Other then that: > Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> To ensure the hw configuration in stmmac_pltfr_remove behavior normally, we should disable clocks after stmmac_pltfr_remove. And there is no order requirement between clocks configured by stmmac_probe_config_dt/stmmac_remove_config_dt and clocks configured by mediatek_dwmac_clks_config, so it's safe for current snippet. Best Regards! Biao > > > + return ret; > > } > > > > static const struct of_device_id mediatek_dwmac_match[] = { > > @@ -733,7 +726,7 @@ MODULE_DEVICE_TABLE(of, mediatek_dwmac_match); > > > > static struct platform_driver mediatek_dwmac_driver = { > > .probe = mediatek_dwmac_probe, > > - .remove = stmmac_pltfr_remove, > > + .remove = mediatek_dwmac_remove, > > .driver = { > > .name = "dwmac-mediatek", > > .pm = &stmmac_pltfr_pm_ops,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c index 6ff88df58767..ca8ab290013c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c @@ -576,32 +576,7 @@ static int mediatek_dwmac_init(struct platform_device *pdev, void *priv) } } - ret = clk_bulk_prepare_enable(variant->num_clks, plat->clks); - if (ret) { - dev_err(plat->dev, "failed to enable clks, err = %d\n", ret); - return ret; - } - - ret = clk_prepare_enable(plat->rmii_internal_clk); - if (ret) { - dev_err(plat->dev, "failed to enable rmii internal clk, err = %d\n", ret); - goto err_clk; - } - return 0; - -err_clk: - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); - return ret; -} - -static void mediatek_dwmac_exit(struct platform_device *pdev, void *priv) -{ - struct mediatek_dwmac_plat_data *plat = priv; - const struct mediatek_dwmac_variant *variant = plat->variant; - - clk_disable_unprepare(plat->rmii_internal_clk); - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); } static int mediatek_dwmac_clks_config(void *priv, bool enabled) @@ -643,7 +618,6 @@ static int mediatek_dwmac_common_data(struct platform_device *pdev, plat->addr64 = priv_plat->variant->dma_bit_mask; plat->bsp_priv = priv_plat; plat->init = mediatek_dwmac_init; - plat->exit = mediatek_dwmac_exit; plat->clks_config = mediatek_dwmac_clks_config; if (priv_plat->variant->dwmac_fix_mac_speed) plat->fix_mac_speed = priv_plat->variant->dwmac_fix_mac_speed; @@ -712,13 +686,32 @@ static int mediatek_dwmac_probe(struct platform_device *pdev) mediatek_dwmac_common_data(pdev, plat_dat, priv_plat); mediatek_dwmac_init(pdev, priv_plat); + ret = mediatek_dwmac_clks_config(priv_plat, true); + if (ret) + return ret; + ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); if (ret) { stmmac_remove_config_dt(pdev, plat_dat); - return ret; + goto err_drv_probe; } return 0; + +err_drv_probe: + mediatek_dwmac_clks_config(priv_plat, false); + return ret; +} + +static int mediatek_dwmac_remove(struct platform_device *pdev) +{ + struct mediatek_dwmac_plat_data *priv_plat = get_stmmac_bsp_priv(&pdev->dev); + int ret; + + ret = stmmac_pltfr_remove(pdev); + mediatek_dwmac_clks_config(priv_plat, false); + + return ret; } static const struct of_device_id mediatek_dwmac_match[] = { @@ -733,7 +726,7 @@ MODULE_DEVICE_TABLE(of, mediatek_dwmac_match); static struct platform_driver mediatek_dwmac_driver = { .probe = mediatek_dwmac_probe, - .remove = stmmac_pltfr_remove, + .remove = mediatek_dwmac_remove, .driver = { .name = "dwmac-mediatek", .pm = &stmmac_pltfr_pm_ops,
The pm_runtime takes care of the clock handling in current stmmac drivers, and dwmac-mediatek implement the mediatek_dwmac_clks_config() as the callback for pm_runtime. Then, stripping duplicated clocks handling in old init()/exit() to fix clock issue in suspend/resume test. As to clocks in probe/remove, vendor need symmetric handling to ensure clocks balance. Test pass, including suspend/resume and ko insertion/remove. Fixes: 3186bdad97d5 ("stmmac: dwmac-mediatek: add platform level clocks management") Signed-off-by: Biao Huang <biao.huang@mediatek.com> --- .../ethernet/stmicro/stmmac/dwmac-mediatek.c | 49 ++++++++----------- 1 file changed, 21 insertions(+), 28 deletions(-)