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Commit 9a66efe7 authored by Kuogee Hsieh's avatar Kuogee Hsieh
Browse files

msm: mdss: un map dsi transmit buffer properly 



DSi tx buffer is mapped to iommu memory if iommu
attached. Therefore it needs to be iommu un mapped
at end of transmission.

CRs-Fixed: 752164
Change-Id: I2d3edad78c0cd859b5c31b5e2c6d66e5148ccf5f
Signed-off-by: default avatarKuogee Hsieh <khsieh@codeaurora.org>
parent f282b1f2

drivers/video/msm/mdss/mdss_dsi.h

+1 −0
Original line number Diff line number Diff line
@@ -330,6 +330,7 @@ struct mdss_dsi_ctrl_pdata { 
	int bklt_max;

	int new_fps;

	int pwm_enabled;

	bool dmap_iommu_map;

	bool panel_bias_vreg;

	bool dsi_irq_line;

	atomic_t te_irq_ready;

drivers/video/msm/mdss/mdss_dsi_host.c

+6 −3
Original line number Diff line number Diff line
@@ -1518,6 +1518,7 @@ static int mdss_dsi_cmd_dma_tx(struct mdss_dsi_ctrl_pdata *ctrl, 
			pr_err("unable to map dma memory to iommu(%d)\n", ret);

			return -ENOMEM;

		}

		ctrl->dmap_iommu_map = true;

	} else {

		ctrl->dma_addr = tp->dmap;

	}
@@ -1558,19 +1559,21 @@ static int mdss_dsi_cmd_dma_tx(struct mdss_dsi_ctrl_pdata *ctrl, 
		ret = tp->len;



	if (mctrl && mctrl->dma_addr) {

		if (ctrl->mdss_util->iommu_attached()) {

		if (mctrl->dmap_iommu_map) {

			msm_iommu_unmap_contig_buffer(mctrl->dma_addr,

			ctrl->mdss_util->get_iommu_domain(domain),

				mctrl->mdss_util->get_iommu_domain(domain),

							0, mctrl->dma_size);

			mctrl->dmap_iommu_map = false;

		}

		mctrl->dma_addr = 0;

		mctrl->dma_size = 0;

	}



	if (ctrl->mdss_util->iommu_attached()) {

	if (ctrl->dmap_iommu_map) {

		msm_iommu_unmap_contig_buffer(ctrl->dma_addr,

			ctrl->mdss_util->get_iommu_domain(domain),

							0, ctrl->dma_size);

		ctrl->dmap_iommu_map = false;

	}



	ctrl->dma_addr = 0;