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authorTian Tao <tiantao6@hisilicon.com>2020-01-08 10:41:41 +0100
committerXinliang Liu <xinliang.liu@linaro.org>2020-02-27 05:34:32 +0100
commitbc17e557495429ac8f8c1e68a8f0e7adefdb793b (patch)
treef98f0284b40d4b7c21ebd261c765f67664934ab4
parentdrm/hisilicon: fixed the wrong resolution configurations (diff)
downloadlinux-bc17e557495429ac8f8c1e68a8f0e7adefdb793b.tar.xz
linux-bc17e557495429ac8f8c1e68a8f0e7adefdb793b.zip
drm/hisilicon: Add the mode_valid function
add mode_valid function, we can make sure the resolution is valid. Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Gong junjie <gongjunjie2@huawei.com> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/1578476501-45807-1-git-send-email-tiantao6@hisilicon.com
-rw-r--r--drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
index 66ed6b0441e6..55b46a7150a5 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
@@ -243,6 +243,25 @@ static void hibmc_crtc_atomic_disable(struct drm_crtc *crtc,
hibmc_set_current_gate(priv, reg);
}
+static enum drm_mode_status
+hibmc_crtc_mode_valid(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode)
+{
+ int i = 0;
+ int vrefresh = drm_mode_vrefresh(mode);
+
+ if (vrefresh < 59 || vrefresh > 61)
+ return MODE_NOCLOCK;
+
+ for (i = 0; i < ARRAY_SIZE(hibmc_pll_table); i++) {
+ if (hibmc_pll_table[i].hdisplay == mode->hdisplay &&
+ hibmc_pll_table[i].vdisplay == mode->vdisplay)
+ return MODE_OK;
+ }
+
+ return MODE_BAD;
+}
+
static unsigned int format_pll_reg(void)
{
unsigned int pllreg = 0;
@@ -511,6 +530,7 @@ static const struct drm_crtc_helper_funcs hibmc_crtc_helper_funcs = {
.atomic_flush = hibmc_crtc_atomic_flush,
.atomic_enable = hibmc_crtc_atomic_enable,
.atomic_disable = hibmc_crtc_atomic_disable,
+ .mode_valid = hibmc_crtc_mode_valid,
};
int hibmc_de_init(struct hibmc_drm_private *priv)