Merge "msm: mdss: avoid DSI FIFO errors during dynamic refresh operation" (15db8521) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/video/msm/mdss/mdss_dsi_host.c

+14 −2

Original line number	Diff line number	Diff line
		@@ -2878,7 +2878,7 @@ bool mdss_dsi_dln0_phy_err(struct mdss_dsi_ctrl_pdata *ctrl, bool print_en)

		static bool mdss_dsi_fifo_status(struct mdss_dsi_ctrl_pdata *ctrl)
		{
		u32 status;
		u32 status, isr;
		unsigned char *base;
		bool ret = false;

		@@ -2889,7 +2889,19 @@ static bool mdss_dsi_fifo_status(struct mdss_dsi_ctrl_pdata *ctrl)
		/* fifo underflow, overflow and empty*/
		if (status & 0xcccc4409) {
		MIPI_OUTP(base + 0x000c, status);

		/*
		* When dynamic refresh operation is under progress, it is
		* expected to have FIFO underflow error sometimes. In such
		* cases, do not trigger the underflow recovery process and
		* avoid printing the error status on console.
		*/
		isr = MIPI_INP(ctrl->ctrl_base + 0x0110);
		if (isr & DSI_INTR_DYNAMIC_REFRESH_MASK)
		status &= ~(0x88880000);
		else
		pr_err("%s: status=%x\n", __func__, status);

		if (status & 0x44440000) {/* DLNx_HS_FIFO_OVERFLOW */
		dsi_send_events(ctrl, DSI_EV_DLNx_FIFO_OVERFLOW, 0);
		/* Ignore FIFO EMPTY when overflow happens */