From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sinan Kaya Subject: [PATCH V3 4/4] dmaengine: qcom_hidma: add identity register support Date: Thu, 9 Nov 2017 21:32:55 -0500 Message-ID: <1510281175-27173-4-git-send-email-okaya@codeaurora.org> References: <1510281175-27173-1-git-send-email-okaya@codeaurora.org> Return-path: In-Reply-To: <1510281175-27173-1-git-send-email-okaya@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org To: dmaengine@vger.kernel.org, timur@codeaurora.org Cc: linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, robin.murphy@arm.com, Sinan Kaya , linux-kernel@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org The location for destination event channel register has been relocated from offset 0x28 to 0x40. Update the code accordingly. Signed-off-by: Sinan Kaya --- drivers/dma/qcom/hidma.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/dma/qcom/hidma.c b/drivers/dma/qcom/hidma.c index d9d8071..a3a6032 100644 --- a/drivers/dma/qcom/hidma.c +++ b/drivers/dma/qcom/hidma.c @@ -107,6 +107,7 @@ static void hidma_free(struct hidma_dev *dmadev) enum hidma_cap { HIDMA_MSI_CAP = 1, + HIDMA_IDENTITY_CAP, }; /* process completed descriptors */ @@ -843,7 +844,10 @@ static int hidma_probe(struct platform_device *pdev) if (!dmadev->nr_descriptors) dmadev->nr_descriptors = HIDMA_NR_DEFAULT_DESC; - dmadev->chidx = readl(dmadev->dev_trca + 0x28); + if (hidma_test_capability(&pdev->dev, HIDMA_IDENTITY_CAP)) + dmadev->chidx = readl(dmadev->dev_trca + 0x40); + else + dmadev->chidx = readl(dmadev->dev_trca + 0x28); /* Set DMA mask to 64 bits. */ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); @@ -949,7 +953,7 @@ static int hidma_remove(struct platform_device *pdev) static const struct acpi_device_id hidma_acpi_ids[] = { {"QCOM8061"}, {"QCOM8062", HIDMA_MSI_CAP}, - {"QCOM8063", HIDMA_MSI_CAP}, + {"QCOM8063", (HIDMA_MSI_CAP | HIDMA_IDENTITY_CAP)}, {}, }; MODULE_DEVICE_TABLE(acpi, hidma_acpi_ids); @@ -958,7 +962,8 @@ static int hidma_remove(struct platform_device *pdev) static const struct of_device_id hidma_match[] = { {.compatible = "qcom,hidma-1.0",}, {.compatible = "qcom,hidma-1.1", .data = (void *)(HIDMA_MSI_CAP),}, - {.compatible = "qcom,hidma-1.2", .data = (void *)(HIDMA_MSI_CAP),}, + {.compatible = "qcom,hidma-1.2", + .data = (void *)(HIDMA_MSI_CAP | HIDMA_IDENTITY_CAP),}, {}, }; MODULE_DEVICE_TABLE(of, hidma_match); -- 1.9.1