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Commit b4629f52 authored by Sandeep Panda's avatar Sandeep Panda
Browse files

msm: mdss: disable auto refresh before configuring tearcheck 



If auto refresh mode is enabled in LK, then it needs be disabled
when kernel loads. Otherwise it might cause display corruption,
when in kernel display again configures tearcheck block.

Change-Id: I0b4dddee25e39cea4f32b8afd537993ad64ea812
Signed-off-by: default avatarSandeep Panda <spanda@codeaurora.org>
parent 2cba4c62

drivers/video/msm/mdss/mdss_mdp_intf_cmd.c

+25 −1
Original line number Diff line number Diff line
@@ -303,11 +303,35 @@ static int mdss_mdp_cmd_tearcheck_setup(struct mdss_mdp_cmd_ctx *ctx, 
		bool locked)

{

	int rc = 0;

	struct mdss_mdp_mixer *mixer;

	struct mdss_mdp_mixer *mixer = NULL, *mixer_right = NULL;

	struct mdss_mdp_ctl *ctl = ctx->ctl;

	struct mdss_data_type *mdata = mdss_mdp_get_mdata();

	u32 offset = 0;



	mixer = mdss_mdp_mixer_get(ctl, MDSS_MDP_MIXER_MUX_LEFT);

	if (mixer) {

		/*

		 * Disable auto refresh mode, if enabled in splash to

		 * avoid corruption.

		 */

		if (mdss_mdp_pingpong_read(mixer->pingpong_base,

			MDSS_MDP_REG_PP_AUTOREFRESH_CONFIG) & BIT(31)) {

			offset = MDSS_MDP_REG_PP_AUTOREFRESH_CONFIG;

			if (is_pingpong_split(ctl->mfd))

				writel_relaxed(0x0,

					(mdata->slave_pingpong_base + offset));

			if (is_split_lm(ctl->mfd)) {

				mixer_right =

					mdss_mdp_mixer_get(ctl,

						MDSS_MDP_MIXER_MUX_RIGHT);

				if (mixer_right)

					writel_relaxed(0x0,

					(mixer_right->pingpong_base + offset));

			}

			mdss_mdp_pingpong_write(mixer->pingpong_base,

				MDSS_MDP_REG_PP_AUTOREFRESH_CONFIG, 0x0);

			pr_debug("%s: disabling auto refresh\n", __func__);

		}

		rc = mdss_mdp_cmd_tearcheck_cfg(mixer, ctx, locked);

		if (rc)

			goto err;