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Commit 8585d730 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 "i2c: i2c-qcom-geni: Modify the DMA buffer mapping"

parents cbf362d7 d87fe2ef

drivers/i2c/busses/i2c-qcom-geni.c

+10 −12
Original line number Diff line number Diff line
@@ -448,8 +448,8 @@ static int geni_i2c_gsi_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], 
		int stretch = (i < (num - 1));

		dma_cookie_t tx_cookie, rx_cookie;

		struct msm_gpi_tre *go_t = &gi2c->go_t;

		struct device *rx_dev = gi2c->dev;

		struct device *tx_dev = gi2c->dev;

		struct device *rx_dev = gi2c->wrapper_dev;

		struct device *tx_dev = gi2c->wrapper_dev;



		gi2c->cur = &msgs[i];

		if (!gi2c->cfg_sent) {
@@ -480,9 +480,8 @@ static int geni_i2c_gsi_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], 


		if (msgs[i].flags & I2C_M_RD) {

			sg_init_table(&gi2c->rx_sg, 1);

			gi2c->rx_ph = dma_map_single(rx_dev, msgs[i].buf,

						     msgs[i].len,

						     DMA_FROM_DEVICE);

			geni_se_iommu_map_buf(rx_dev, &gi2c->rx_ph, msgs[i].buf,

						msgs[i].len, DMA_FROM_DEVICE);

			gi2c->rx_t.dword[0] =

				MSM_GPI_DMA_W_BUFFER_TRE_DWORD0(gi2c->rx_ph);

			gi2c->rx_t.dword[1] =
@@ -512,9 +511,8 @@ static int geni_i2c_gsi_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], 
			rx_cookie = dmaengine_submit(gi2c->rx_desc);

			dma_async_issue_pending(gi2c->rx_c);

		} else {

			gi2c->tx_ph = dma_map_single(tx_dev, msgs[i].buf,

						     msgs[i].len,

						     DMA_TO_DEVICE);

			geni_se_iommu_map_buf(tx_dev, &gi2c->tx_ph, msgs[i].buf,

						msgs[i].len, DMA_TO_DEVICE);

			gi2c->tx_t.dword[0] =

				MSM_GPI_DMA_W_BUFFER_TRE_DWORD0(gi2c->tx_ph);

			gi2c->tx_t.dword[1] =
@@ -547,11 +545,11 @@ static int geni_i2c_gsi_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], 


		timeout = wait_for_completion_timeout(&gi2c->xfer, HZ);

		if (msgs[i].flags & I2C_M_RD)

			dma_unmap_single(rx_dev, gi2c->rx_ph, msgs[i].len,

					 DMA_FROM_DEVICE);

			geni_se_iommu_unmap_buf(rx_dev, &gi2c->rx_ph,

				msgs[i].len, DMA_FROM_DEVICE);

		else

			dma_unmap_single(tx_dev, gi2c->tx_ph, msgs[i].len,

					 DMA_TO_DEVICE);

			geni_se_iommu_unmap_buf(tx_dev, &gi2c->tx_ph,

				msgs[i].len, DMA_TO_DEVICE);



		if (!timeout) {

			GENI_SE_ERR(gi2c->ipcl, true, gi2c->dev,