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Commit 2acb6070 authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "msm: mdss: refactor command mode vsync control logic"

parents e4433fd3 d76a440c

drivers/video/msm/mdss/mdss_mdp_intf_cmd.c

+13 −15
Original line number Diff line number Diff line
@@ -398,6 +398,7 @@ static int mdss_mdp_cmd_add_vsync_handler(struct mdss_mdp_ctl *ctl, 
{

	struct mdss_mdp_cmd_ctx *ctx;

	unsigned long flags;

	bool enable_rdptr = false;



	ctx = (struct mdss_mdp_cmd_ctx *) ctl->priv_data;

	if (!ctx) {
@@ -409,12 +410,14 @@ static int mdss_mdp_cmd_add_vsync_handler(struct mdss_mdp_ctl *ctl, 
	if (!handle->enabled) {

		handle->enabled = true;

		list_add(&handle->list, &ctx->vsync_handlers);

		if (!handle->cmd_post_flush)

			ctx->vsync_enabled = 1;



		enable_rdptr = !handle->cmd_post_flush;

		if (enable_rdptr)

			ctx->vsync_enabled++;

	}

	spin_unlock_irqrestore(&ctx->clk_lock, flags);



	if (!handle->cmd_post_flush)

	if (enable_rdptr)

		mdss_mdp_cmd_clk_on(ctx);



	return 0;
@@ -423,11 +426,8 @@ static int mdss_mdp_cmd_add_vsync_handler(struct mdss_mdp_ctl *ctl, 
static int mdss_mdp_cmd_remove_vsync_handler(struct mdss_mdp_ctl *ctl,

		struct mdss_mdp_vsync_handler *handle)

{



	struct mdss_mdp_cmd_ctx *ctx;

	unsigned long flags;

	struct mdss_mdp_vsync_handler *tmp;

	int num_rdptr_vsync = 0;



	ctx = (struct mdss_mdp_cmd_ctx *) ctl->priv_data;

	if (!ctx) {
@@ -435,19 +435,17 @@ static int mdss_mdp_cmd_remove_vsync_handler(struct mdss_mdp_ctl *ctl, 
		return -ENODEV;

	}





	spin_lock_irqsave(&ctx->clk_lock, flags);

	if (handle->enabled) {

		handle->enabled = false;

		list_del_init(&handle->list);



		if (!handle->cmd_post_flush) {

			if (ctx->vsync_enabled)

				ctx->vsync_enabled--;

			else

				WARN(1, "unbalanced vsync disable");

		}

	list_for_each_entry(tmp, &ctx->vsync_handlers, list) {

		if (!tmp->cmd_post_flush)

			num_rdptr_vsync++;

	}

	if (!num_rdptr_vsync) {

		ctx->vsync_enabled = 0;

		ctx->rdptr_enabled = VSYNC_EXPIRE_TICK;

	}

	spin_unlock_irqrestore(&ctx->clk_lock, flags);

	return 0;