Shared queues are used for communication between driver and firmware. There are 3 types of queues: Command queue - driver to write any command to firmware. Message queue - firmware to send any response to driver. Debug queue - firmware to write debug message. Above queues are initialized and configured to firmware during probe. Signed-off-by: Dikshita Agarwal <quic_dikshita@xxxxxxxxxxx> --- drivers/media/platform/qcom/vcodec/iris/Makefile | 2 ++ .../media/platform/qcom/vcodec/iris/iris_core.h | 11 ++++++++ .../media/platform/qcom/vcodec/iris/iris_probe.c | 31 ++++++++++++++++++++++ 3 files changed, 44 insertions(+) diff --git a/drivers/media/platform/qcom/vcodec/iris/Makefile b/drivers/media/platform/qcom/vcodec/iris/Makefile index 12a74de..59798e5d 100644 --- a/drivers/media/platform/qcom/vcodec/iris/Makefile +++ b/drivers/media/platform/qcom/vcodec/iris/Makefile @@ -1,3 +1,5 @@ +iris-objs += ../hfi_queue.o + iris-objs += iris_probe.o \ resources.o \ iris_state.o diff --git a/drivers/media/platform/qcom/vcodec/iris/iris_core.h b/drivers/media/platform/qcom/vcodec/iris/iris_core.h index 56a5b7d..77124f9 100644 --- a/drivers/media/platform/qcom/vcodec/iris/iris_core.h +++ b/drivers/media/platform/qcom/vcodec/iris/iris_core.h @@ -9,6 +9,7 @@ #include <linux/types.h> #include <media/v4l2-device.h> +#include "../hfi_queue.h" #include "iris_state.h" /** @@ -30,6 +31,11 @@ * @reset_tbl: table of iris reset clocks * @reset_count: count of iris reset clocks * @state: current state of core + * @iface_q_table: Interface queue table memory + * @command_queue: shared interface queue to send commands to firmware + * @message_queue: shared interface queue to receive responses from firmware + * @debug_queue: shared interface queue to receive debug info from firmware + * @sfr: SFR register memory */ struct iris_core { @@ -49,6 +55,11 @@ struct iris_core { struct reset_info *reset_tbl; u32 reset_count; enum iris_core_state state; + struct mem_desc iface_q_table; + struct iface_q_info command_queue; + struct iface_q_info message_queue; + struct iface_q_info debug_queue; + struct mem_desc sfr; }; #endif diff --git a/drivers/media/platform/qcom/vcodec/iris/iris_probe.c b/drivers/media/platform/qcom/vcodec/iris/iris_probe.c index 7bb9c92..fd349a3 100644 --- a/drivers/media/platform/qcom/vcodec/iris/iris_probe.c +++ b/drivers/media/platform/qcom/vcodec/iris/iris_probe.c @@ -7,6 +7,7 @@ #include <linux/of_device.h> #include <linux/platform_device.h> +#include "../hfi_queue.h" #include "iris_core.h" #include "resources.h" @@ -50,6 +51,10 @@ static void iris_remove(struct platform_device *pdev) if (!core) return; + hfi_queue_deinit(core->dev, &core->iface_q_table, &core->sfr, + &core->command_queue, &core->message_queue, + &core->debug_queue); + video_unregister_device(core->vdev_dec); v4l2_device_unregister(&core->v4l2_dev); @@ -59,6 +64,7 @@ static int iris_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct iris_core *core; + u64 dma_mask; int ret; core = devm_kzalloc(&pdev->dev, sizeof(*core), GFP_KERNEL); @@ -91,8 +97,33 @@ static int iris_probe(struct platform_device *pdev) platform_set_drvdata(pdev, core); + /* + * Specify the max value of address space, which can be used + * for buffer transactions. + */ + dma_mask = DMA_BIT_MASK(32); + dma_mask &= ~BIT(29); + + ret = dma_set_mask_and_coherent(dev, dma_mask); + if (ret) + goto err_vdev_unreg; + + dma_set_max_seg_size(&pdev->dev, (unsigned int)DMA_BIT_MASK(32)); + dma_set_seg_boundary(&pdev->dev, (unsigned long)DMA_BIT_MASK(64)); + + ret = hfi_queue_init(core->dev, &core->iface_q_table, &core->sfr, + &core->command_queue, &core->message_queue, + &core->debug_queue, core); + if (ret) { + dev_err_probe(core->dev, ret, + "%s: interface queues init failed\n", __func__); + goto err_vdev_unreg; + } + return ret; +err_vdev_unreg: + iris_unregister_video_device(core); err_v4l2_unreg: v4l2_device_unregister(&core->v4l2_dev); -- 2.7.4