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[46.138.85.91]) by smtp.gmail.com with ESMTPSA id g30sm46607lfj.298.2021.08.16.18.30.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Aug 2021 18:30:16 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Ulf Hansson , Viresh Kumar , Stephen Boyd , Peter De Schrijver , Mikko Perttunen , Peter Chen , Mark Brown , Lee Jones , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Nishanth Menon , Vignesh Raghavendra , Richard Weinberger , Miquel Raynal , Lucas Stach , Stefan Agner , Adrian Hunter , Mauro Carvalho Chehab , Rob Herring , Michael Turquette Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-staging@lists.linux.dev, linux-spi@vger.kernel.org, linux-pwm@vger.kernel.org, linux-mtd@lists.infradead.org, linux-mmc@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org Subject: [PATCH v8 13/34] drm/tegra: hdmi: Add OPP support Date: Tue, 17 Aug 2021 04:27:33 +0300 Message-Id: <20210817012754.8710-14-digetx@gmail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210817012754.8710-1-digetx@gmail.com> References: <20210817012754.8710-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The HDMI on Tegra belongs to the core power domain and we're going to enable GENPD support for the core domain. Now HDMI driver must use OPP API for driving the controller's clock rate because OPP API takes care of reconfiguring the domain's performance state based on HDMI clock rate. Add OPP support to the HDMI driver. Signed-off-by: Dmitry Osipenko --- drivers/gpu/drm/tegra/hdmi.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index e5d2a4026028..aa13028480f7 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -11,10 +11,13 @@ #include #include #include +#include #include #include #include +#include + #include #include #include @@ -1195,7 +1198,7 @@ static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder) h_back_porch = mode->htotal - mode->hsync_end; h_front_porch = mode->hsync_start - mode->hdisplay; - err = clk_set_rate(hdmi->clk, hdmi->pixel_clock); + err = dev_pm_opp_set_rate(hdmi->dev, hdmi->pixel_clock); if (err < 0) { dev_err(hdmi->dev, "failed to set HDMI clock frequency: %d\n", err); @@ -1516,6 +1519,12 @@ static int tegra_hdmi_runtime_resume(struct host1x_client *client) return err; } + err = dev_pm_opp_sync(dev); + if (err) { + dev_err(dev, "failed to sync OPP: %d\n", err); + goto put_rpm; + } + err = clk_prepare_enable(hdmi->clk); if (err < 0) { dev_err(dev, "failed to enable clock: %d\n", err); @@ -1708,6 +1717,10 @@ static int tegra_hdmi_probe(struct platform_device *pdev) hdmi->output.dev = &pdev->dev; + err = devm_tegra_core_dev_init_opp_table_simple(&pdev->dev); + if (err) + return err; + err = tegra_output_probe(&hdmi->output); if (err < 0) return err; -- 2.32.0