diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/tegra/dc/hdmi.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/video/tegra/dc/hdmi.c b/drivers/video/tegra/dc/hdmi.c index ab76f3ee6792..abac83b8f021 100644 --- a/drivers/video/tegra/dc/hdmi.c +++ b/drivers/video/tegra/dc/hdmi.c @@ -79,6 +79,9 @@ struct tegra_dc_hdmi_data { struct clk *disp1_clk; struct clk *disp2_clk; + struct clk *hda_clk; + struct clk *hda2codec_clk; + struct clk *hda2hdmicodec_clk; #ifdef CONFIG_SWITCH struct switch_dev hpd_switch; @@ -918,6 +921,29 @@ static int tegra_dc_hdmi_init(struct tegra_dc *dc) goto err_put_clock; } +#if !defined(CONFIG_ARCH_TEGRA_2x_SOC) + hdmi->hda_clk = clk_get_sys("hda", NULL); + if (IS_ERR_OR_NULL(hdmi->hda_clk)) { + dev_err(&dc->ndev->dev, "hdmi: can't get hda clock\n"); + err = -ENOENT; + goto err_put_clock; + } + + hdmi->hda2codec_clk = clk_get_sys("hda2codec_2x", NULL); + if (IS_ERR_OR_NULL(hdmi->hda2codec_clk)) { + dev_err(&dc->ndev->dev, "hdmi: can't get hda2codec clock\n"); + err = -ENOENT; + goto err_put_clock; + } + + hdmi->hda2hdmicodec_clk = clk_get_sys("hda2hdmi", NULL); + if (IS_ERR_OR_NULL(hdmi->hda2hdmicodec_clk)) { + dev_err(&dc->ndev->dev, "hdmi: can't get hda2hdmi clock\n"); + err = -ENOENT; + goto err_put_clock; + } +#endif + /* TODO: support non-hotplug */ if (request_irq(gpio_to_irq(dc->out->hotplug_gpio), tegra_dc_hdmi_irq, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, @@ -986,6 +1012,14 @@ err_edid_destroy: err_free_irq: free_irq(gpio_to_irq(dc->out->hotplug_gpio), dc); err_put_clock: +#if !defined(CONFIG_ARCH_TEGRA_2x_SOC) + if (!IS_ERR_OR_NULL(hdmi->hda2hdmicodec_clk)) + clk_put(hdmi->hda2hdmicodec_clk); + if (!IS_ERR_OR_NULL(hdmi->hda2codec_clk)) + clk_put(hdmi->hda2codec_clk); + if (!IS_ERR_OR_NULL(hdmi->hda_clk)) + clk_put(hdmi->hda_clk); +#endif if (!IS_ERR_OR_NULL(disp2_clk)) clk_put(disp2_clk); if (!IS_ERR_OR_NULL(disp1_clk)) @@ -1012,6 +1046,11 @@ static void tegra_dc_hdmi_destroy(struct tegra_dc *dc) #endif iounmap(hdmi->base); release_resource(hdmi->base_res); +#if !defined(CONFIG_ARCH_TEGRA_2x_SOC) + clk_put(hdmi->hda2hdmicodec_clk); + clk_put(hdmi->hda2codec_clk); + clk_put(hdmi->hda_clk); +#endif clk_put(hdmi->clk); clk_put(hdmi->disp1_clk); clk_put(hdmi->disp2_clk); @@ -1454,6 +1493,13 @@ static void tegra_dc_hdmi_enable(struct tegra_dc *dc) clk_enable(hdmi->disp1_clk); clk_enable(hdmi->disp2_clk); +#if !defined(CONFIG_ARCH_TEGRA_2x_SOC) + /* Enabling HDA clocks before asserting HDA PD and ELDV bits */ + clk_enable(hdmi->hda_clk); + clk_enable(hdmi->hda2codec_clk); + clk_enable(hdmi->hda2hdmicodec_clk); +#endif + /* back off multiplier before attaching to parent at new rate. */ oldrate = clk_get_rate(hdmi->clk); clk_set_rate(hdmi->clk, oldrate / 2); @@ -1649,6 +1695,11 @@ static void tegra_dc_hdmi_disable(struct tegra_dc *dc) #if !defined(CONFIG_ARCH_TEGRA_2x_SOC) tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE_0); + /* sleep 1ms before disabling clocks to ensure HDA gets the interrupt */ + msleep(1); + clk_disable(hdmi->hda2hdmicodec_clk); + clk_disable(hdmi->hda2codec_clk); + clk_disable(hdmi->hda_clk); #endif tegra_periph_reset_assert(hdmi->clk); hdmi->clk_enabled = false; |