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[46.138.46.211]) by smtp.gmail.com with ESMTPSA id p18sm1191280lfu.127.2021.11.14.11.36.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Nov 2021 11:36:21 -0800 (PST) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Ulf Hansson , Viresh Kumar , Stephen Boyd , Peter De Schrijver , Mikko Perttunen , Lee Jones , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Nishanth Menon , Adrian Hunter , Michael Turquette Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-pwm@vger.kernel.org, linux-mmc@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-clk@vger.kernel.org, David Heidelberg Subject: [PATCH v15 26/39] media: staging: tegra-vde: Support generic power domain Date: Sun, 14 Nov 2021 22:34:22 +0300 Message-Id: <20211114193435.7705-27-digetx@gmail.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211114193435.7705-1-digetx@gmail.com> References: <20211114193435.7705-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. Reviewed-by: Ulf Hansson Tested-by: Peter Geis # Ouya T30 Tested-by: Paul Fertser # PAZ00 T20 Tested-by: Nicolas Chauvet # PAZ00 T20 and TK1 T124 Tested-by: Matt Merhar # Ouya T30 Acked-by: Hans Verkuil Signed-off-by: Dmitry Osipenko --- drivers/staging/media/tegra-vde/vde.c | 63 ++++++++++++++++++++++----- 1 file changed, 52 insertions(+), 11 deletions(-) diff --git a/drivers/staging/media/tegra-vde/vde.c b/drivers/staging/media/tegra-vde/vde.c index ed4c1250b303..859f60a70904 100644 --- a/drivers/staging/media/tegra-vde/vde.c +++ b/drivers/staging/media/tegra-vde/vde.c @@ -20,6 +20,7 @@ #include #include +#include #include #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 +941,45 @@ 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; + } + } else { + /* + * tegra_powergate_sequence_power_up() leaves clocks enabled, + * while GENPD not. + */ + 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 +1037,14 @@ 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); @@ -1026,6 +1062,12 @@ static int tegra_vde_probe(struct platform_device *pdev) return err; } + err = devm_tegra_core_dev_init_opp_table_common(dev); + if (err) { + dev_err(dev, "Could initialize OPP table %d\n", err); + return err; + } + vde->iram_pool = of_gen_pool_get(dev->of_node, "iram", 0); if (!vde->iram_pool) { dev_err(dev, "Could not get IRAM pool\n"); @@ -1133,8 +1175,7 @@ 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) -- 2.33.1