diff options
Diffstat (limited to 'patches.tizen/1227-drm-exynos-hdmi-add-support-for-pixel-clock-limitati.patch')
| -rw-r--r-- | patches.tizen/1227-drm-exynos-hdmi-add-support-for-pixel-clock-limitati.patch | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/patches.tizen/1227-drm-exynos-hdmi-add-support-for-pixel-clock-limitati.patch b/patches.tizen/1227-drm-exynos-hdmi-add-support-for-pixel-clock-limitati.patch new file mode 100644 index 00000000000..58ec0c33a56 --- /dev/null +++ b/patches.tizen/1227-drm-exynos-hdmi-add-support-for-pixel-clock-limitati.patch @@ -0,0 +1,83 @@ +From b0e5279f26ee004363cc83edd012aa3036b06140 Mon Sep 17 00:00:00 2001 +From: Tomasz Stanislawski <t.stanislaws@samsung.com> +Date: Thu, 19 Dec 2013 16:24:07 +0100 +Subject: [PATCH 1227/1302] drm: exynos: hdmi: add support for pixel clock + limitation + +Adds support for limitation of maximal pixel clock of HDMI +signal. This feature is needed on boards that contains +lines or bridges with frequency limitations. + +Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> +Change-Id: I4cc38e995feeaca77b73e9ea0197d67f99d57715 +Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> +--- + drivers/gpu/drm/exynos/exynos_hdmi.c | 11 +++++++++++ + include/media/s5p_hdmi.h | 1 + + 2 files changed, 12 insertions(+) + +diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c +index 87c3f42..a48cf75 100644 +--- a/drivers/gpu/drm/exynos/exynos_hdmi.c ++++ b/drivers/gpu/drm/exynos/exynos_hdmi.c +@@ -201,6 +201,7 @@ struct hdmi_context { + struct hdmi_resources res; + + int hpd_gpio; ++ u32 max_pixel_clock; + + enum hdmi_type type; + }; +@@ -801,6 +802,8 @@ static int hdmi_check_mode(void *ctx, struct drm_display_mode *mode) + (mode->flags & DRM_MODE_FLAG_INTERLACE) ? true : + false, mode->clock * 1000); + ++ if (mode->clock * 1000 > hdata->max_pixel_clock) ++ return -E2BIG; + ret = hdmi_find_phy_conf(hdata, mode->clock * 1000); + if (ret < 0) + return ret; +@@ -1868,6 +1871,8 @@ static struct s5p_hdmi_platform_data *drm_hdmi_dt_parse_pdata + return NULL; + } + ++ of_property_read_u32(np, "max-pixel-clock", &pd->max_pixel_clock); ++ + return pd; + } + #else +@@ -1934,6 +1939,11 @@ static int hdmi_probe(struct platform_device *pdev) + return -EINVAL; + } + ++ if (!pdata->max_pixel_clock) { ++ DRM_LOG("max-pixel-clock is zero, using INF\n"); ++ pdata->max_pixel_clock = ULONG_MAX; ++ } ++ + drm_hdmi_ctx = devm_kzalloc(dev, sizeof(*drm_hdmi_ctx), + GFP_KERNEL); + if (!drm_hdmi_ctx) +@@ -1964,6 +1974,7 @@ static int hdmi_probe(struct platform_device *pdev) + } + + hdata->hpd_gpio = pdata->hpd_gpio; ++ hdata->max_pixel_clock = pdata->max_pixel_clock; + hdata->dev = dev; + + ret = hdmi_resources_init(hdata); +diff --git a/include/media/s5p_hdmi.h b/include/media/s5p_hdmi.h +index 181642b..7272d65 100644 +--- a/include/media/s5p_hdmi.h ++++ b/include/media/s5p_hdmi.h +@@ -31,6 +31,7 @@ struct s5p_hdmi_platform_data { + int mhl_bus; + struct i2c_board_info *mhl_info; + int hpd_gpio; ++ u32 max_pixel_clock; + }; + + #endif /* S5P_HDMI_H */ +-- +1.8.3.2 + |