Commit bc17e557 authored by Tian Tao's avatar Tian Tao Committed by Xinliang Liu
Browse files

drm/hisilicon: Add the mode_valid function 



add mode_valid function, we can make sure the resolution is valid.

Signed-off-by: default avatarTian Tao <tiantao6@hisilicon.com>
Signed-off-by: default avatarGong junjie <gongjunjie2@huawei.com>
Reviewed-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: default avatarXinliang Liu <xinliang.liu@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1578476501-45807-1-git-send-email-tiantao6@hisilicon.com
parent de3c3ed4

drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c

+20 −0
Original line number Diff line number Diff line
@@ -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)

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