| Message ID | 20210912200832.12312-25-digetx@gmail.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | NVIDIA Tegra power management patches for 5.16 | expand |
On 12/09/2021 22:08, Dmitry Osipenko wrote: > Currently driver supports legacy power domain API, this patch adds generic > power domain support. This allows us to utilize a modern GENPD API for > newer device-trees. > > Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya T30 > Tested-by: Paul Fertser <fercerpav@gmail.com> # PAZ00 T20 > Tested-by: Nicolas Chauvet <kwizart@gmail.com> # PAZ00 T20 and TK1 T124 > Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya T30 > Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Regards, Hans > --- > drivers/staging/media/tegra-vde/vde.c | 57 +++++++++++++++++++++------ > 1 file changed, 46 insertions(+), 11 deletions(-) > > diff --git a/drivers/staging/media/tegra-vde/vde.c b/drivers/staging/media/tegra-vde/vde.c > index ed4c1250b303..bb3079a2c0b5 100644 > --- a/drivers/staging/media/tegra-vde/vde.c > +++ b/drivers/staging/media/tegra-vde/vde.c > @@ -20,6 +20,7 @@ > #include <linux/slab.h> > #include <linux/uaccess.h> > > +#include <soc/tegra/common.h> > #include <soc/tegra/pmc.h> > > #include "uapi.h" > @@ -920,13 +921,17 @@ static __maybe_unused int tegra_vde_runtime_suspend(struct device *dev) > struct tegra_vde *vde = dev_get_drvdata(dev); > int err; > > - err = tegra_powergate_power_off(TEGRA_POWERGATE_VDEC); > - if (err) { > - dev_err(dev, "Failed to power down HW: %d\n", err); > - return err; > + if (!dev->pm_domain) { > + err = tegra_powergate_power_off(TEGRA_POWERGATE_VDEC); > + if (err) { > + dev_err(dev, "Failed to power down HW: %d\n", err); > + return err; > + } > } > > clk_disable_unprepare(vde->clk); > + reset_control_release(vde->rst); > + reset_control_release(vde->rst_mc); > > return 0; > } > @@ -936,14 +941,41 @@ static __maybe_unused int tegra_vde_runtime_resume(struct device *dev) > struct tegra_vde *vde = dev_get_drvdata(dev); > int err; > > - err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_VDEC, > - vde->clk, vde->rst); > + err = reset_control_acquire(vde->rst_mc); > if (err) { > - dev_err(dev, "Failed to power up HW : %d\n", err); > + dev_err(dev, "Failed to acquire mc reset: %d\n", err); > return err; > } > > + err = reset_control_acquire(vde->rst); > + if (err) { > + dev_err(dev, "Failed to acquire reset: %d\n", err); > + goto release_mc_reset; > + } > + > + if (!dev->pm_domain) { > + err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_VDEC, > + vde->clk, vde->rst); > + if (err) { > + dev_err(dev, "Failed to power up HW : %d\n", err); > + goto release_reset; > + } > + } > + > + err = clk_prepare_enable(vde->clk); > + if (err) { > + dev_err(dev, "Failed to enable clock: %d\n", err); > + goto release_reset; > + } > + > return 0; > + > +release_reset: > + reset_control_release(vde->rst); > +release_mc_reset: > + reset_control_release(vde->rst_mc); > + > + return err; > } > > static int tegra_vde_probe(struct platform_device *pdev) > @@ -1001,14 +1033,14 @@ static int tegra_vde_probe(struct platform_device *pdev) > return err; > } > > - vde->rst = devm_reset_control_get(dev, NULL); > + vde->rst = devm_reset_control_get_exclusive_released(dev, NULL); > if (IS_ERR(vde->rst)) { > err = PTR_ERR(vde->rst); > dev_err(dev, "Could not get VDE reset %d\n", err); > return err; > } > > - vde->rst_mc = devm_reset_control_get_optional(dev, "mc"); > + vde->rst_mc = devm_reset_control_get_optional_exclusive_released(dev, "mc"); > if (IS_ERR(vde->rst_mc)) { > err = PTR_ERR(vde->rst_mc); > dev_err(dev, "Could not get MC reset %d\n", err); > @@ -1066,6 +1098,10 @@ static int tegra_vde_probe(struct platform_device *pdev) > pm_runtime_use_autosuspend(dev); > pm_runtime_set_autosuspend_delay(dev, 300); > > + err = devm_tegra_core_dev_init_opp_table_common(dev); > + if (err) > + goto err_pm_runtime; > + > /* > * VDE partition may be left ON after bootloader, hence let's > * power-cycle it in order to put hardware into a predictable lower > @@ -1133,8 +1169,7 @@ static void tegra_vde_shutdown(struct platform_device *pdev) > * On some devices bootloader isn't ready to a power-gated VDE on > * a warm-reboot, machine will hang in that case. > */ > - if (pm_runtime_status_suspended(&pdev->dev)) > - tegra_vde_runtime_resume(&pdev->dev); > + pm_runtime_get_sync(&pdev->dev); > } > > static __maybe_unused int tegra_vde_pm_suspend(struct device *dev) >
diff --git a/drivers/staging/media/tegra-vde/vde.c b/drivers/staging/media/tegra-vde/vde.c index ed4c1250b303..bb3079a2c0b5 100644 --- a/drivers/staging/media/tegra-vde/vde.c +++ b/drivers/staging/media/tegra-vde/vde.c @@ -20,6 +20,7 @@ #include <linux/slab.h> #include <linux/uaccess.h> +#include <soc/tegra/common.h> #include <soc/tegra/pmc.h> #include "uapi.h" @@ -920,13 +921,17 @@ static __maybe_unused int tegra_vde_runtime_suspend(struct device *dev) struct tegra_vde *vde = dev_get_drvdata(dev); int err; - err = tegra_powergate_power_off(TEGRA_POWERGATE_VDEC); - if (err) { - dev_err(dev, "Failed to power down HW: %d\n", err); - return err; + if (!dev->pm_domain) { + err = tegra_powergate_power_off(TEGRA_POWERGATE_VDEC); + if (err) { + dev_err(dev, "Failed to power down HW: %d\n", err); + return err; + } } clk_disable_unprepare(vde->clk); + reset_control_release(vde->rst); + reset_control_release(vde->rst_mc); return 0; } @@ -936,14 +941,41 @@ static __maybe_unused int tegra_vde_runtime_resume(struct device *dev) struct tegra_vde *vde = dev_get_drvdata(dev); int err; - err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_VDEC, - vde->clk, vde->rst); + err = reset_control_acquire(vde->rst_mc); if (err) { - dev_err(dev, "Failed to power up HW : %d\n", err); + dev_err(dev, "Failed to acquire mc reset: %d\n", err); return err; } + err = reset_control_acquire(vde->rst); + if (err) { + dev_err(dev, "Failed to acquire reset: %d\n", err); + goto release_mc_reset; + } + + if (!dev->pm_domain) { + err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_VDEC, + vde->clk, vde->rst); + if (err) { + dev_err(dev, "Failed to power up HW : %d\n", err); + goto release_reset; + } + } + + err = clk_prepare_enable(vde->clk); + if (err) { + dev_err(dev, "Failed to enable clock: %d\n", err); + goto release_reset; + } + return 0; + +release_reset: + reset_control_release(vde->rst); +release_mc_reset: + reset_control_release(vde->rst_mc); + + return err; } static int tegra_vde_probe(struct platform_device *pdev) @@ -1001,14 +1033,14 @@ static int tegra_vde_probe(struct platform_device *pdev) return err; } - vde->rst = devm_reset_control_get(dev, NULL); + vde->rst = devm_reset_control_get_exclusive_released(dev, NULL); if (IS_ERR(vde->rst)) { err = PTR_ERR(vde->rst); dev_err(dev, "Could not get VDE reset %d\n", err); return err; } - vde->rst_mc = devm_reset_control_get_optional(dev, "mc"); + vde->rst_mc = devm_reset_control_get_optional_exclusive_released(dev, "mc"); if (IS_ERR(vde->rst_mc)) { err = PTR_ERR(vde->rst_mc); dev_err(dev, "Could not get MC reset %d\n", err); @@ -1066,6 +1098,10 @@ static int tegra_vde_probe(struct platform_device *pdev) pm_runtime_use_autosuspend(dev); pm_runtime_set_autosuspend_delay(dev, 300); + err = devm_tegra_core_dev_init_opp_table_common(dev); + if (err) + goto err_pm_runtime; + /* * VDE partition may be left ON after bootloader, hence let's * power-cycle it in order to put hardware into a predictable lower @@ -1133,8 +1169,7 @@ static void tegra_vde_shutdown(struct platform_device *pdev) * On some devices bootloader isn't ready to a power-gated VDE on * a warm-reboot, machine will hang in that case. */ - if (pm_runtime_status_suspended(&pdev->dev)) - tegra_vde_runtime_resume(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); } static __maybe_unused int tegra_vde_pm_suspend(struct device *dev)