diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_hdmi.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 87c3f4271e9..a48cf7551a2 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); |