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Subject[PATCH v8 05/10] media: venus: adding core part and helper functions
Date
 * core.c has implemented the platform driver methods, file
operations and v4l2 registration.

* helpers.c has implemented common helper functions for:
- buffer management

- vb2_ops and functions for format propagation,

- functions for allocating and freeing buffers for
internal usage. The buffer parameters describing internal
buffers depends on current format, resolution and codec.

- functions for calculation of current load of the
hardware. Depending on the count of instances and
resolutions it selects the best clock rate for the video
core.

* firmware loader

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
---
drivers/media/platform/qcom/venus/core.c | 388 ++++++++++++++
drivers/media/platform/qcom/venus/core.h | 323 ++++++++++++
drivers/media/platform/qcom/venus/firmware.c | 107 ++++
drivers/media/platform/qcom/venus/firmware.h | 22 +
drivers/media/platform/qcom/venus/helpers.c | 725 +++++++++++++++++++++++++++
drivers/media/platform/qcom/venus/helpers.h | 44 ++
6 files changed, 1609 insertions(+)
create mode 100644 drivers/media/platform/qcom/venus/core.c
create mode 100644 drivers/media/platform/qcom/venus/core.h
create mode 100644 drivers/media/platform/qcom/venus/firmware.c
create mode 100644 drivers/media/platform/qcom/venus/firmware.h
create mode 100644 drivers/media/platform/qcom/venus/helpers.c
create mode 100644 drivers/media/platform/qcom/venus/helpers.h

diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
new file mode 100644
index 000000000000..48391d87d5c3
--- /dev/null
+++ b/drivers/media/platform/qcom/venus/core.c
@@ -0,0 +1,388 @@
+/*
+ * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2017 Linaro Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/pm_runtime.h>
+#include <media/videobuf2-v4l2.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-ioctl.h>
+
+#include "core.h"
+#include "vdec.h"
+#include "venc.h"
+#include "firmware.h"
+
+static void venus_event_notify(struct venus_core *core, u32 event)
+{
+ struct venus_inst *inst;
+
+ switch (event) {
+ case EVT_SYS_WATCHDOG_TIMEOUT:
+ case EVT_SYS_ERROR:
+ break;
+ default:
+ return;
+ }
+
+ mutex_lock(&core->lock);
+ core->sys_error = true;
+ list_for_each_entry(inst, &core->instances, list)
+ inst->ops->event_notify(inst, EVT_SESSION_ERROR, NULL);
+ mutex_unlock(&core->lock);
+
+ disable_irq_nosync(core->irq);
+
+ /*
+ * Delay recovery to ensure venus has completed any pending cache
+ * operations. Without this sleep, we see device reset when firmware is
+ * unloaded after a system error.
+ */
+ schedule_delayed_work(&core->work, msecs_to_jiffies(100));
+}
+
+static const struct hfi_core_ops venus_core_ops = {
+ .event_notify = venus_event_notify,
+};
+
+static void venus_sys_error_handler(struct work_struct *work)
+{
+ struct venus_core *core =
+ container_of(work, struct venus_core, work.work);
+ int ret = 0;
+
+ dev_warn(core->dev, "system error has occurred, starting recovery!\n");
+
+ pm_runtime_get_sync(core->dev);
+
+ hfi_core_deinit(core, true);
+ hfi_destroy(core);
+ mutex_lock(&core->lock);
+ venus_shutdown(&core->dev_fw);
+
+ pm_runtime_put_sync(core->dev);
+
+ ret |= hfi_create(core, &venus_core_ops);
+
+ pm_runtime_get_sync(core->dev);
+
+ ret |= venus_boot(core->dev, &core->dev_fw);
+
+ ret |= hfi_core_resume(core, true);
+
+ enable_irq(core->irq);
+
+ mutex_unlock(&core->lock);
+
+ ret |= hfi_core_init(core);
+
+ pm_runtime_put_sync(core->dev);
+
+ if (ret) {
+ disable_irq_nosync(core->irq);
+ dev_warn(core->dev, "recovery failed (%d)\n", ret);
+ schedule_delayed_work(&core->work, msecs_to_jiffies(10));
+ return;
+ }
+
+ mutex_lock(&core->lock);
+ core->sys_error = false;
+ mutex_unlock(&core->lock);
+}
+
+static int venus_clks_get(struct venus_core *core)
+{
+ const struct venus_resources *res = core->res;
+ struct device *dev = core->dev;
+ unsigned int i;
+
+ for (i = 0; i < res->clks_num; i++) {
+ core->clks[i] = devm_clk_get(dev, res->clks[i]);
+ if (IS_ERR(core->clks[i]))
+ return PTR_ERR(core->clks[i]);
+ }
+
+ return 0;
+}
+
+static int venus_clks_enable(struct venus_core *core)
+{
+ const struct venus_resources *res = core->res;
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < res->clks_num; i++) {
+ ret = clk_prepare_enable(core->clks[i]);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+err:
+ while (--i)
+ clk_disable_unprepare(core->clks[i]);
+
+ return ret;
+}
+
+static void venus_clks_disable(struct venus_core *core)
+{
+ const struct venus_resources *res = core->res;
+ unsigned int i = res->clks_num;
+
+ while (i--)
+ clk_disable_unprepare(core->clks[i]);
+}
+
+static int venus_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct venus_core *core;
+ struct resource *r;
+ int ret;
+
+ core = devm_kzalloc(dev, sizeof(*core), GFP_KERNEL);
+ if (!core)
+ return -ENOMEM;
+
+ core->dev = dev;
+ platform_set_drvdata(pdev, core);
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ core->base = devm_ioremap_resource(dev, r);
+ if (IS_ERR(core->base))
+ return PTR_ERR(core->base);
+
+ core->irq = platform_get_irq(pdev, 0);
+ if (core->irq < 0)
+ return core->irq;
+
+ core->res = of_device_get_match_data(dev);
+ if (!core->res)
+ return -ENODEV;
+
+ ret = venus_clks_get(core);
+ if (ret)
+ return ret;
+
+ ret = dma_set_mask_and_coherent(dev, core->res->dma_mask);
+ if (ret)
+ return ret;
+
+ INIT_LIST_HEAD(&core->instances);
+ mutex_init(&core->lock);
+ INIT_DELAYED_WORK(&core->work, venus_sys_error_handler);
+
+ ret = devm_request_threaded_irq(dev, core->irq, hfi_isr, hfi_isr_thread,
+ IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+ "venus", core);
+ if (ret)
+ return ret;
+
+ ret = hfi_create(core, &venus_core_ops);
+ if (ret)
+ return ret;
+
+ pm_runtime_enable(dev);
+
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0)
+ goto err_runtime_disable;
+
+ ret = venus_boot(dev, &core->dev_fw);
+ if (ret)
+ goto err_runtime_disable;
+
+ ret = hfi_core_resume(core, true);
+ if (ret)
+ goto err_venus_shutdown;
+
+ ret = hfi_core_init(core);
+ if (ret)
+ goto err_venus_shutdown;
+
+ ret = v4l2_device_register(dev, &core->v4l2_dev);
+ if (ret)
+ goto err_core_deinit;
+
+ ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
+ if (ret)
+ goto err_dev_unregister;
+
+ ret = pm_runtime_put_sync(dev);
+ if (ret)
+ goto err_dev_unregister;
+
+ return 0;
+
+err_dev_unregister:
+ v4l2_device_unregister(&core->v4l2_dev);
+err_core_deinit:
+ hfi_core_deinit(core, false);
+err_venus_shutdown:
+ venus_shutdown(&core->dev_fw);
+err_runtime_disable:
+ pm_runtime_set_suspended(dev);
+ pm_runtime_disable(dev);
+ hfi_destroy(core);
+ return ret;
+}
+
+static int venus_remove(struct platform_device *pdev)
+{
+ struct venus_core *core = platform_get_drvdata(pdev);
+ struct device *dev = core->dev;
+ int ret;
+
+ ret = pm_runtime_get_sync(dev);
+ WARN_ON(ret < 0);
+
+ ret = hfi_core_deinit(core, true);
+ WARN_ON(ret);
+
+ hfi_destroy(core);
+ venus_shutdown(&core->dev_fw);
+ of_platform_depopulate(dev);
+
+ pm_runtime_put_sync(dev);
+ pm_runtime_disable(dev);
+
+ v4l2_device_unregister(&core->v4l2_dev);
+
+ return ret;
+}
+
+#ifdef CONFIG_PM
+static int venus_runtime_suspend(struct device *dev)
+{
+ struct venus_core *core = dev_get_drvdata(dev);
+ int ret;
+
+ ret = hfi_core_suspend(core);
+
+ venus_clks_disable(core);
+
+ return ret;
+}
+
+static int venus_runtime_resume(struct device *dev)
+{
+ struct venus_core *core = dev_get_drvdata(dev);
+ int ret;
+
+ ret = venus_clks_enable(core);
+ if (ret)
+ return ret;
+
+ ret = hfi_core_resume(core, false);
+ if (ret)
+ goto err_clks_disable;
+
+ return 0;
+
+err_clks_disable:
+ venus_clks_disable(core);
+ return ret;
+}
+#endif
+
+static const struct dev_pm_ops venus_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(venus_runtime_suspend, venus_runtime_resume, NULL)
+};
+
+static const struct freq_tbl msm8916_freq_table[] = {
+ { 352800, 228570000 }, /* 1920x1088 @ 30 + 1280x720 @ 30 */
+ { 244800, 160000000 }, /* 1920x1088 @ 30 */
+ { 108000, 100000000 }, /* 1280x720 @ 30 */
+};
+
+static const struct reg_val msm8916_reg_preset[] = {
+ { 0xe0020, 0x05555556 },
+ { 0xe0024, 0x05555556 },
+ { 0x80124, 0x00000003 },
+};
+
+static const struct venus_resources msm8916_res = {
+ .freq_tbl = msm8916_freq_table,
+ .freq_tbl_size = ARRAY_SIZE(msm8916_freq_table),
+ .reg_tbl = msm8916_reg_preset,
+ .reg_tbl_size = ARRAY_SIZE(msm8916_reg_preset),
+ .clks = { "core", "iface", "bus", },
+ .clks_num = 3,
+ .max_load = 352800, /* 720p@30 + 1080p@30 */
+ .hfi_version = HFI_VERSION_1XX,
+ .vmem_id = VIDC_RESOURCE_NONE,
+ .vmem_size = 0,
+ .vmem_addr = 0,
+ .dma_mask = 0xddc00000 - 1,
+};
+
+static const struct freq_tbl msm8996_freq_table[] = {
+ { 1944000, 490000000 }, /* 4k UHD @ 60 */
+ { 972000, 320000000 }, /* 4k UHD @ 30 */
+ { 489600, 150000000 }, /* 1080p @ 60 */
+ { 244800, 75000000 }, /* 1080p @ 30 */
+};
+
+static const struct reg_val msm8996_reg_preset[] = {
+ { 0x80010, 0xffffffff },
+ { 0x80018, 0x00001556 },
+ { 0x8001C, 0x00001556 },
+};
+
+static const struct venus_resources msm8996_res = {
+ .freq_tbl = msm8996_freq_table,
+ .freq_tbl_size = ARRAY_SIZE(msm8996_freq_table),
+ .reg_tbl = msm8996_reg_preset,
+ .reg_tbl_size = ARRAY_SIZE(msm8996_reg_preset),
+ .clks = {"core", "iface", "bus", "mbus" },
+ .clks_num = 4,
+ .max_load = 2563200,
+ .hfi_version = HFI_VERSION_3XX,
+ .vmem_id = VIDC_RESOURCE_NONE,
+ .vmem_size = 0,
+ .vmem_addr = 0,
+ .dma_mask = 0xddc00000 - 1,
+};
+
+static const struct of_device_id venus_dt_match[] = {
+ { .compatible = "qcom,msm8916-venus", .data = &msm8916_res, },
+ { .compatible = "qcom,msm8996-venus", .data = &msm8996_res, },
+ { }
+};
+MODULE_DEVICE_TABLE(of, venus_dt_match);
+
+static struct platform_driver qcom_venus_driver = {
+ .probe = venus_probe,
+ .remove = venus_remove,
+ .driver = {
+ .name = "qcom-venus",
+ .of_match_table = venus_dt_match,
+ .pm = &venus_pm_ops,
+ },
+};
+module_platform_driver(qcom_venus_driver);
+
+MODULE_ALIAS("platform:qcom-venus");
+MODULE_DESCRIPTION("Qualcomm Venus video encoder and decoder driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
new file mode 100644
index 000000000000..2ba7495e7f41
--- /dev/null
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -0,0 +1,323 @@
+/*
+ * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2017 Linaro Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __VENUS_CORE_H_
+#define __VENUS_CORE_H_
+
+#include <linux/list.h>
+#include <media/videobuf2-v4l2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+
+#include "hfi.h"
+
+#define VIDC_CLKS_NUM_MAX 4
+
+struct freq_tbl {
+ unsigned int load;
+ unsigned long freq;
+};
+
+struct reg_val {
+ u32 reg;
+ u32 value;
+};
+
+struct venus_resources {
+ u64 dma_mask;
+ const struct freq_tbl *freq_tbl;
+ unsigned int freq_tbl_size;
+ const struct reg_val *reg_tbl;
+ unsigned int reg_tbl_size;
+ const char * const clks[VIDC_CLKS_NUM_MAX];
+ unsigned int clks_num;
+ enum hfi_version hfi_version;
+ u32 max_load;
+ unsigned int vmem_id;
+ u32 vmem_size;
+ u32 vmem_addr;
+};
+
+struct venus_format {
+ u32 pixfmt;
+ int num_planes;
+ u32 type;
+};
+
+/**
+ * struct venus_core - holds core parameters valid for all instances
+ *
+ * @base: IO memory base address
+ * @irq: Venus irq
+ * @clks: an array of struct clk pointers
+ * @core0_clk: a struct clk pointer for core0
+ * @core1_clk: a struct clk pointer for core1
+ * @vdev_dec: a reference to video device structure for decoder instances
+ * @vdev_enc: a reference to video device structure for encoder instances
+ * @v4l2_dev: a holder for v4l2 device structure
+ * @res: a reference to venus resources structure
+ * @dev: convinience struct device pointer
+ * @dev_dec: convinience struct device pointer for decoder device
+ * @dev_enc: convinience struct device pointer for encoder device
+ * @lock: a lock for this strucure
+ * @instances: a list_head of all instances
+ * @insts_count: num of instances
+ * @state: the state of the venus core
+ * @done: a completion for sync HFI operations
+ * @error: an error returned during last HFI sync operations
+ * @sys_error: an error flag that signal system error event
+ * @core_ops: the core operations
+ * @enc_codecs: encoders supported by this core
+ * @dec_codecs: decoders supported by this core
+ * @max_sessions_supported: holds the maximum number of sessions
+ * @core_caps: core capabilities
+ * @priv: a private filed for HFI operations
+ * @ops: the core HFI operations
+ * @work: a delayed work for handling system fatal error
+ */
+struct venus_core {
+ void __iomem *base;
+ int irq;
+ struct clk *clks[VIDC_CLKS_NUM_MAX];
+ struct clk *core0_clk;
+ struct clk *core1_clk;
+ struct video_device *vdev_dec;
+ struct video_device *vdev_enc;
+ struct v4l2_device v4l2_dev;
+ const struct venus_resources *res;
+ struct device *dev;
+ struct device *dev_dec;
+ struct device *dev_enc;
+ struct device dev_fw;
+ struct mutex lock;
+ struct list_head instances;
+ atomic_t insts_count;
+ unsigned int state;
+ struct completion done;
+ unsigned int error;
+ bool sys_error;
+ const struct hfi_core_ops *core_ops;
+ u32 enc_codecs;
+ u32 dec_codecs;
+ unsigned int max_sessions_supported;
+#define ENC_ROTATION_CAPABILITY 0x1
+#define ENC_SCALING_CAPABILITY 0x2
+#define ENC_DEINTERLACE_CAPABILITY 0x4
+#define DEC_MULTI_STREAM_CAPABILITY 0x8
+ unsigned int core_caps;
+ void *priv;
+ const struct hfi_ops *ops;
+ struct delayed_work work;
+};
+
+struct vdec_controls {
+ u32 post_loop_deb_mode;
+ u32 profile;
+ u32 level;
+};
+
+struct venc_controls {
+ u16 gop_size;
+ u32 num_p_frames;
+ u32 num_b_frames;
+ u32 bitrate_mode;
+ u32 bitrate;
+ u32 bitrate_peak;
+
+ u32 h264_i_period;
+ u32 h264_entropy_mode;
+ u32 h264_i_qp;
+ u32 h264_p_qp;
+ u32 h264_b_qp;
+ u32 h264_min_qp;
+ u32 h264_max_qp;
+ u32 h264_loop_filter_mode;
+ u32 h264_loop_filter_alpha;
+ u32 h264_loop_filter_beta;
+
+ u32 vp8_min_qp;
+ u32 vp8_max_qp;
+
+ u32 multi_slice_mode;
+ u32 multi_slice_max_bytes;
+ u32 multi_slice_max_mb;
+
+ u32 header_mode;
+
+ struct {
+ u32 mpeg4;
+ u32 h264;
+ u32 vpx;
+ } profile;
+ struct {
+ u32 mpeg4;
+ u32 h264;
+ } level;
+};
+
+struct venus_buffer {
+ struct vb2_v4l2_buffer vb;
+ struct list_head list;
+ dma_addr_t dma_addr;
+ u32 size;
+ struct list_head reg_list;
+ u32 flags;
+ struct list_head ref_list;
+};
+
+#define to_venus_buffer(ptr) container_of(ptr, struct venus_buffer, vb)
+
+/**
+ * struct venus_inst - holds per instance paramerters
+ *
+ * @list: used for attach an instance to the core
+ * @lock: instance lock
+ * @core: a reference to the core struct
+ * @internalbufs: a list of internal bufferes
+ * @registeredbufs: a list of registered capture bufferes
+ * @delayed_process a list of delayed buffers
+ * @delayed_process_work: a work_struct for process delayed buffers
+ * @ctrl_handler: v4l control handler
+ * @controls: a union of decoder and encoder control parameters
+ * @fh: a holder of v4l file handle structure
+ * @streamon_cap: stream on flag for capture queue
+ * @streamon_out: stream on flag for output queue
+ * @cmd_stop: a flag to signal encoder/decoder commands
+ * @width: current capture width
+ * @height: current capture height
+ * @out_width: current output width
+ * @out_height: current output height
+ * @colorspace: current color space
+ * @quantization: current quantization
+ * @xfer_func: current xfer function
+ * @fps: holds current FPS
+ * @timeperframe: holds current time per frame structure
+ * @fmt_out: a reference to output format structure
+ * @fmt_cap: a reference to capture format structure
+ * @num_input_bufs: holds number of input buffers
+ * @num_output_bufs: holds number of output buffers
+ * @input_buf_size holds input buffer size
+ * @output_buf_size: holds output buffer size
+ * @reconfig: a flag raised by decoder when the stream resolution changed
+ * @reconfig_width: holds the new width
+ * @reconfig_height: holds the new height
+ * @sequence_cap: a sequence counter for capture queue
+ * @sequence_out: a sequence counter for output queue
+ * @m2m_dev: a reference to m2m device structure
+ * @m2m_ctx: a reference to m2m context structure
+ * @state: current state of the instance
+ * @done: a completion for sync HFI operation
+ * @error: an error returned during last HFI sync operation
+ * @session_error: a flag rised by HFI interface in case of session error
+ * @ops: HFI operations
+ * @priv: a private for HFI operations callbacks
+ * @session_type: the type of the session (decoder or encoder)
+ * @hprop: a union used as a holder by get property
+ * @cap_width: width capability
+ * @cap_height: height capability
+ * @cap_mbs_per_frame: macroblocks per frame capability
+ * @cap_mbs_per_sec: macroblocks per second capability
+ * @cap_framerate: framerate capability
+ * @cap_scale_x: horizontal scaling capability
+ * @cap_scale_y: vertical scaling capability
+ * @cap_bitrate: bitrate capability
+ * @cap_hier_p: hier capability
+ * @cap_ltr_count: LTR count capability
+ * @cap_secure_output2_threshold: secure OUTPUT2 threshold capability
+ * @cap_bufs_mode_static: buffers allocation mode capability
+ * @cap_bufs_mode_dynamic: buffers allocation mode capability
+ * @pl_count: count of supported profiles/levels
+ * @pl: supported profiles/levels
+ * @bufreq: holds buffer requirements
+ */
+struct venus_inst {
+ struct list_head list;
+ struct mutex lock;
+ struct venus_core *core;
+ struct list_head internalbufs;
+ struct list_head registeredbufs;
+ struct list_head delayed_process;
+ struct work_struct delayed_process_work;
+
+ struct v4l2_ctrl_handler ctrl_handler;
+ union {
+ struct vdec_controls dec;
+ struct venc_controls enc;
+ } controls;
+ struct v4l2_fh fh;
+ unsigned int streamon_cap, streamon_out;
+ bool cmd_stop;
+ u32 width;
+ u32 height;
+ u32 out_width;
+ u32 out_height;
+ u32 colorspace;
+ u8 ycbcr_enc;
+ u8 quantization;
+ u8 xfer_func;
+ u64 fps;
+ struct v4l2_fract timeperframe;
+ const struct venus_format *fmt_out;
+ const struct venus_format *fmt_cap;
+ unsigned int num_input_bufs;
+ unsigned int num_output_bufs;
+ unsigned int input_buf_size;
+ unsigned int output_buf_size;
+ bool reconfig;
+ u32 reconfig_width;
+ u32 reconfig_height;
+ u32 sequence_cap;
+ u32 sequence_out;
+ struct v4l2_m2m_dev *m2m_dev;
+ struct v4l2_m2m_ctx *m2m_ctx;
+ unsigned int state;
+ struct completion done;
+ unsigned int error;
+ bool session_error;
+ const struct hfi_inst_ops *ops;
+ u32 session_type;
+ union hfi_get_property hprop;
+ struct hfi_capability cap_width;
+ struct hfi_capability cap_height;
+ struct hfi_capability cap_mbs_per_frame;
+ struct hfi_capability cap_mbs_per_sec;
+ struct hfi_capability cap_framerate;
+ struct hfi_capability cap_scale_x;
+ struct hfi_capability cap_scale_y;
+ struct hfi_capability cap_bitrate;
+ struct hfi_capability cap_hier_p;
+ struct hfi_capability cap_ltr_count;
+ struct hfi_capability cap_secure_output2_threshold;
+ bool cap_bufs_mode_static;
+ bool cap_bufs_mode_dynamic;
+ unsigned int pl_count;
+ struct hfi_profile_level pl[HFI_MAX_PROFILE_COUNT];
+ struct hfi_buffer_requirements bufreq[HFI_BUFFER_TYPE_MAX];
+};
+
+#define ctrl_to_inst(ctrl) \
+ container_of((ctrl)->handler, struct venus_inst, ctrl_handler)
+
+static inline struct venus_inst *to_inst(struct file *filp)
+{
+ return container_of(filp->private_data, struct venus_inst, fh);
+}
+
+static inline void *to_hfi_priv(struct venus_core *core)
+{
+ return core->priv;
+}
+
+#endif
diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c
new file mode 100644
index 000000000000..e0601a94f3f0
--- /dev/null
+++ b/drivers/media/platform/qcom/venus/firmware.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2017 Linaro Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/firmware.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/of_reserved_mem.h>
+#include <linux/slab.h>
+#include <linux/qcom_scm.h>
+#include <linux/soc/qcom/mdt_loader.h>
+
+#define VENUS_FIRMWARE_NAME "venus.mdt"
+#define VENUS_PAS_ID 9
+#define VENUS_FW_MEM_SIZE SZ_8M
+
+static void device_release_dummy(struct device *dev)
+{
+ of_reserved_mem_device_release(dev);
+}
+
+int venus_boot(struct device *parent, struct device *fw_dev)
+{
+ const struct firmware *mdt;
+ phys_addr_t mem_phys;
+ ssize_t fw_size;
+ size_t mem_size;
+ void *mem_va;
+ int ret;
+
+ if (!qcom_scm_is_available())
+ return -EPROBE_DEFER;
+
+ fw_dev->parent = parent;
+ fw_dev->release = device_release_dummy;
+
+ ret = dev_set_name(fw_dev, "%s:%s", dev_name(parent), "firmware");
+ if (ret)
+ return ret;
+
+ ret = device_register(fw_dev);
+ if (ret < 0)
+ return ret;
+
+ ret = of_reserved_mem_device_init_by_idx(fw_dev, parent->of_node, 0);
+ if (ret)
+ goto err_unreg_device;
+
+ mem_size = VENUS_FW_MEM_SIZE;
+
+ mem_va = dmam_alloc_coherent(fw_dev, mem_size, &mem_phys, GFP_KERNEL);
+ if (!mem_va) {
+ ret = -ENOMEM;
+ goto err_unreg_device;
+ }
+
+ ret = request_firmware(&mdt, VENUS_FIRMWARE_NAME, fw_dev);
+ if (ret < 0)
+ goto err_unreg_device;
+
+ fw_size = qcom_mdt_get_size(mdt);
+ if (fw_size < 0) {
+ ret = fw_size;
+ release_firmware(mdt);
+ goto err_unreg_device;
+ }
+
+ ret = qcom_mdt_load(fw_dev, mdt, VENUS_FIRMWARE_NAME, VENUS_PAS_ID,
+ mem_va, mem_phys, mem_size);
+
+ release_firmware(mdt);
+
+ if (ret)
+ goto err_unreg_device;
+
+ ret = qcom_scm_pas_auth_and_reset(VENUS_PAS_ID);
+ if (ret)
+ goto err_unreg_device;
+
+ return 0;
+
+err_unreg_device:
+ device_unregister(fw_dev);
+ return ret;
+}
+
+int venus_shutdown(struct device *fw_dev)
+{
+ int ret;
+
+ ret = qcom_scm_pas_shutdown(VENUS_PAS_ID);
+ device_unregister(fw_dev);
+ memset(fw_dev, 0, sizeof(*fw_dev));
+
+ return ret;
+}
diff --git a/drivers/media/platform/qcom/venus/firmware.h b/drivers/media/platform/qcom/venus/firmware.h
new file mode 100644
index 000000000000..782e64ae291a
--- /dev/null
+++ b/drivers/media/platform/qcom/venus/firmware.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2017 Linaro Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+#ifndef __VENUS_FIRMWARE_H__
+#define __VENUS_FIRMWARE_H__
+
+struct device;
+
+int venus_boot(struct device *parent, struct device *fw_dev);
+int venus_shutdown(struct device *fw_dev);
+
+#endif
diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
new file mode 100644
index 000000000000..282bbc1d2fda
--- /dev/null
+++ b/drivers/media/platform/qcom/venus/helpers.c
@@ -0,0 +1,725 @@
+/*
+ * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2017 Linaro Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+#include <linux/clk.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <media/videobuf2-dma-sg.h>
+#include <media/v4l2-mem2mem.h>
+#include <asm/div64.h>
+
+#include "core.h"
+#include "helpers.h"
+#include "hfi_helper.h"
+
+struct intbuf {
+ struct list_head list;
+ u32 type;
+ size_t size;
+ void *va;
+ dma_addr_t da;
+ unsigned long attrs;
+};
+
+static int intbufs_set_buffer(struct venus_inst *inst, u32 type)
+{
+ struct venus_core *core = inst->core;
+ struct device *dev = core->dev;
+ struct hfi_buffer_requirements bufreq;
+ struct hfi_buffer_desc bd;
+ struct intbuf *buf;
+ unsigned int i;
+ int ret;
+
+ ret = helper_get_bufreq(inst, type, &bufreq);
+ if (ret)
+ return 0;
+
+ if (!bufreq.size)
+ return 0;
+
+ for (i = 0; i < bufreq.count_actual; i++) {
+ buf = kzalloc(sizeof(*buf), GFP_KERNEL);
+ if (!buf) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ buf->type = bufreq.type;
+ buf->size = bufreq.size;
+ buf->attrs = DMA_ATTR_WRITE_COMBINE |
+ DMA_ATTR_NO_KERNEL_MAPPING;
+ buf->va = dma_alloc_attrs(dev, buf->size, &buf->da, GFP_KERNEL,
+ buf->attrs);
+ if (!buf->va) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ memset(&bd, 0, sizeof(bd));
+ bd.buffer_size = buf->size;
+ bd.buffer_type = buf->type;
+ bd.num_buffers = 1;
+ bd.device_addr = buf->da;
+
+ ret = hfi_session_set_buffers(inst, &bd);
+ if (ret) {
+ dev_err(dev, "set session buffers failed\n");
+ goto dma_free;
+ }
+
+ list_add_tail(&buf->list, &inst->internalbufs);
+ }
+
+ return 0;
+
+dma_free:
+ dma_free_attrs(dev, buf->size, buf->va, buf->da, buf->attrs);
+fail:
+ kfree(buf);
+ return ret;
+}
+
+static int intbufs_unset_buffers(struct venus_inst *inst)
+{
+ struct hfi_buffer_desc bd = {0};
+ struct intbuf *buf, *n;
+ int ret = 0;
+
+ list_for_each_entry_safe(buf, n, &inst->internalbufs, list) {
+ bd.buffer_size = buf->size;
+ bd.buffer_type = buf->type;
+ bd.num_buffers = 1;
+ bd.device_addr = buf->da;
+ bd.response_required = true;
+
+ ret = hfi_session_unset_buffers(inst, &bd);
+
+ list_del_init(&buf->list);
+ dma_free_attrs(inst->core->dev, buf->size, buf->va, buf->da,
+ buf->attrs);
+ kfree(buf);
+ }
+
+ return ret;
+}
+
+static const unsigned int intbuf_types[] = {
+ HFI_BUFFER_INTERNAL_SCRATCH,
+ HFI_BUFFER_INTERNAL_SCRATCH_1,
+ HFI_BUFFER_INTERNAL_SCRATCH_2,
+ HFI_BUFFER_INTERNAL_PERSIST,
+ HFI_BUFFER_INTERNAL_PERSIST_1,
+};
+
+static int intbufs_alloc(struct venus_inst *inst)
+{
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < ARRAY_SIZE(intbuf_types); i++) {
+ ret = intbufs_set_buffer(inst, intbuf_types[i]);
+ if (ret)
+ goto error;
+ }
+
+ return 0;
+
+error:
+ intbufs_unset_buffers(inst);
+ return ret;
+}
+
+static int intbufs_free(struct venus_inst *inst)
+{
+ return intbufs_unset_buffers(inst);
+}
+
+static u32 load_per_instance(struct venus_inst *inst)
+{
+ u32 w = inst->width;
+ u32 h = inst->height;
+ u32 mbs;
+
+ if (!inst || !(inst->state >= INST_INIT && inst->state < INST_STOP))
+ return 0;
+
+ mbs = (ALIGN(w, 16) / 16) * (ALIGN(h, 16) / 16);
+
+ return mbs * inst->fps;
+}
+
+static u32 load_per_type(struct venus_core *core, u32 session_type)
+{
+ struct venus_inst *inst = NULL;
+ u32 mbs_per_sec = 0;
+
+ mutex_lock(&core->lock);
+ list_for_each_entry(inst, &core->instances, list) {
+ if (inst->session_type != session_type)
+ continue;
+
+ mbs_per_sec += load_per_instance(inst);
+ }
+ mutex_unlock(&core->lock);
+
+ return mbs_per_sec;
+}
+
+static int load_scale_clocks(struct venus_core *core)
+{
+ const struct freq_tbl *table = core->res->freq_tbl;
+ unsigned int num_rows = core->res->freq_tbl_size;
+ unsigned long freq = table[0].freq;
+ struct clk *clk = core->clks[0];
+ struct device *dev = core->dev;
+ u32 mbs_per_sec;
+ unsigned int i;
+ int ret;
+
+ mbs_per_sec = load_per_type(core, VIDC_SESSION_TYPE_ENC) +
+ load_per_type(core, VIDC_SESSION_TYPE_DEC);
+
+ if (mbs_per_sec > core->res->max_load)
+ dev_warn(dev, "HW is overloaded, needed: %d max: %d\n",
+ mbs_per_sec, core->res->max_load);
+
+ if (!mbs_per_sec && num_rows > 1) {
+ freq = table[num_rows - 1].freq;
+ goto set_freq;
+ }
+
+ for (i = 0; i < num_rows; i++) {
+ if (mbs_per_sec > table[i].load)
+ break;
+ freq = table[i].freq;
+ }
+
+set_freq:
+
+ if (core->res->hfi_version == HFI_VERSION_3XX) {
+ ret = clk_set_rate(clk, freq);
+ ret |= clk_set_rate(core->core0_clk, freq);
+ ret |= clk_set_rate(core->core1_clk, freq);
+ } else {
+ ret = clk_set_rate(clk, freq);
+ }
+
+ if (ret) {
+ dev_err(dev, "failed to set clock rate %lu (%d)\n", freq, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void fill_buffer_desc(const struct venus_buffer *buf,
+ struct hfi_buffer_desc *bd, bool response)
+{
+ memset(bd, 0, sizeof(*bd));
+ bd->buffer_type = HFI_BUFFER_OUTPUT;
+ bd->buffer_size = buf->size;
+ bd->num_buffers = 1;
+ bd->device_addr = buf->dma_addr;
+ bd->response_required = response;
+}
+
+static void return_buf_error(struct venus_inst *inst,
+ struct vb2_v4l2_buffer *vbuf)
+{
+ struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
+
+ if (vbuf->vb2_buf.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+ v4l2_m2m_src_buf_remove_by_buf(m2m_ctx, vbuf);
+ else
+ v4l2_m2m_src_buf_remove_by_buf(m2m_ctx, vbuf);
+
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
+}
+
+static int
+session_process_buf(struct venus_inst *inst, struct vb2_v4l2_buffer *vbuf)
+{
+ struct venus_buffer *buf = to_venus_buffer(vbuf);
+ struct vb2_buffer *vb = &vbuf->vb2_buf;
+ unsigned int type = vb->type;
+ struct hfi_frame_data fdata;
+ int ret;
+
+ memset(&fdata, 0, sizeof(fdata));
+ fdata.alloc_len = buf->size;
+ fdata.device_addr = buf->dma_addr;
+ fdata.timestamp = vb->timestamp;
+ do_div(fdata.timestamp, NSEC_PER_USEC);
+ fdata.flags = 0;
+ fdata.clnt_data = vbuf->vb2_buf.index;
+
+ if (!fdata.timestamp)
+ fdata.flags |= HFI_BUFFERFLAG_TIMESTAMPINVALID;
+
+ if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+ fdata.buffer_type = HFI_BUFFER_INPUT;
+ fdata.filled_len = vb2_get_plane_payload(vb, 0);
+ fdata.offset = vb->planes[0].data_offset;
+
+ if (vbuf->flags & V4L2_BUF_FLAG_LAST || !fdata.filled_len)
+ fdata.flags |= HFI_BUFFERFLAG_EOS;
+ } else if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+ fdata.buffer_type = HFI_BUFFER_OUTPUT;
+ fdata.filled_len = 0;
+ fdata.offset = 0;
+ }
+
+ ret = hfi_session_process_buf(inst, &fdata);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static inline int is_reg_unreg_needed(struct venus_inst *inst)
+{
+ if (inst->session_type == VIDC_SESSION_TYPE_DEC &&
+ inst->core->res->hfi_version == HFI_VERSION_3XX)
+ return 0;
+
+ if (inst->session_type == VIDC_SESSION_TYPE_DEC &&
+ inst->cap_bufs_mode_dynamic &&
+ inst->core->res->hfi_version == HFI_VERSION_1XX)
+ return 0;
+
+ return 1;
+}
+
+static int session_unregister_bufs(struct venus_inst *inst)
+{
+ struct venus_buffer *buf, *n;
+ struct hfi_buffer_desc bd;
+ int ret = 0;
+
+ if (!is_reg_unreg_needed(inst))
+ return 0;
+
+ list_for_each_entry_safe(buf, n, &inst->registeredbufs, reg_list) {
+ fill_buffer_desc(buf, &bd, true);
+ ret = hfi_session_unset_buffers(inst, &bd);
+ list_del_init(&buf->reg_list);
+ }
+
+ return ret;
+}
+
+static int session_register_bufs(struct venus_inst *inst)
+{
+ struct venus_core *core = inst->core;
+ struct device *dev = core->dev;
+ struct hfi_buffer_desc bd;
+ struct venus_buffer *buf;
+ int ret = 0;
+
+ if (!is_reg_unreg_needed(inst))
+ return 0;
+
+ list_for_each_entry(buf, &inst->registeredbufs, reg_list) {
+ fill_buffer_desc(buf, &bd, false);
+ ret = hfi_session_set_buffers(inst, &bd);
+ if (ret) {
+ dev_err(dev, "%s: set buffer failed\n", __func__);
+ break;
+ }
+ }
+
+ return ret;
+}
+
+int helper_get_bufreq(struct venus_inst *inst, u32 type,
+ struct hfi_buffer_requirements *req)
+{
+ u32 ptype = HFI_PROPERTY_CONFIG_BUFFER_REQUIREMENTS;
+ union hfi_get_property hprop;
+ int ret, i;
+
+ if (req)
+ memset(req, 0, sizeof(*req));
+
+ ret = hfi_session_get_property(inst, ptype, &hprop);
+ if (ret)
+ return ret;
+
+ ret = -EINVAL;
+
+ for (i = 0; i < HFI_BUFFER_TYPE_MAX; i++) {
+ if (hprop.bufreq[i].type != type)
+ continue;
+
+ if (req)
+ memcpy(req, &hprop.bufreq[i], sizeof(*req));
+ ret = 0;
+ break;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(helper_get_bufreq);
+
+int helper_set_input_resolution(struct venus_inst *inst, unsigned int width,
+ unsigned int height)
+{
+ u32 ptype = HFI_PROPERTY_PARAM_FRAME_SIZE;
+ struct hfi_framesize fs;
+
+ fs.buffer_type = HFI_BUFFER_INPUT;
+ fs.width = width;
+ fs.height = height;
+
+ return hfi_session_set_property(inst, ptype, &fs);
+}
+EXPORT_SYMBOL_GPL(helper_set_input_resolution);
+
+int helper_set_output_resolution(struct venus_inst *inst, unsigned int width,
+ unsigned int height)
+{
+ u32 ptype = HFI_PROPERTY_PARAM_FRAME_SIZE;
+ struct hfi_framesize fs;
+
+ fs.buffer_type = HFI_BUFFER_OUTPUT;
+ fs.width = width;
+ fs.height = height;
+
+ return hfi_session_set_property(inst, ptype, &fs);
+}
+EXPORT_SYMBOL_GPL(helper_set_output_resolution);
+
+int helper_set_num_bufs(struct venus_inst *inst, unsigned int input_bufs,
+ unsigned int output_bufs)
+{
+ u32 ptype = HFI_PROPERTY_PARAM_BUFFER_COUNT_ACTUAL;
+ struct hfi_buffer_count_actual buf_count;
+ int ret;
+
+ buf_count.type = HFI_BUFFER_INPUT;
+ buf_count.count_actual = input_bufs;
+
+ ret = hfi_session_set_property(inst, ptype, &buf_count);
+ if (ret)
+ return ret;
+
+ buf_count.type = HFI_BUFFER_OUTPUT;
+ buf_count.count_actual = output_bufs;
+
+ return hfi_session_set_property(inst, ptype, &buf_count);
+}
+EXPORT_SYMBOL_GPL(helper_set_num_bufs);
+
+int helper_set_color_format(struct venus_inst *inst, u32 pixfmt)
+{
+ struct hfi_uncompressed_format_select fmt;
+ u32 ptype = HFI_PROPERTY_PARAM_UNCOMPRESSED_FORMAT_SELECT;
+ int ret;
+
+ if (inst->session_type == VIDC_SESSION_TYPE_DEC)
+ fmt.buffer_type = HFI_BUFFER_OUTPUT;
+ else if (inst->session_type == VIDC_SESSION_TYPE_ENC)
+ fmt.buffer_type = HFI_BUFFER_INPUT;
+ else
+ return -EINVAL;
+
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_NV12:
+ fmt.format = HFI_COLOR_FORMAT_NV12;
+ break;
+ case V4L2_PIX_FMT_NV21:
+ fmt.format = HFI_COLOR_FORMAT_NV21;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = hfi_session_set_property(inst, ptype, &fmt);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(helper_set_color_format);
+
+static void delayed_process_buf_func(struct work_struct *work)
+{
+ struct venus_buffer *buf, *n;
+ struct venus_inst *inst;
+ int ret;
+
+ inst = container_of(work, struct venus_inst, delayed_process_work);
+
+ mutex_lock(&inst->lock);
+
+ if (!(inst->streamon_out & inst->streamon_cap))
+ goto unlock;
+
+ list_for_each_entry_safe(buf, n, &inst->delayed_process, ref_list) {
+ if (buf->flags & HFI_BUFFERFLAG_READONLY)
+ continue;
+
+ ret = session_process_buf(inst, &buf->vb);
+ if (ret)
+ return_buf_error(inst, &buf->vb);
+
+ list_del_init(&buf->ref_list);
+ }
+unlock:
+ mutex_unlock(&inst->lock);
+}
+
+void helper_release_buf_ref(struct venus_inst *inst, unsigned int idx)
+{
+ struct venus_buffer *buf;
+
+ list_for_each_entry(buf, &inst->registeredbufs, reg_list) {
+ if (buf->vb.vb2_buf.index == idx) {
+ buf->flags &= ~HFI_BUFFERFLAG_READONLY;
+ schedule_work(&inst->delayed_process_work);
+ break;
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(helper_release_buf_ref);
+
+void helper_acquire_buf_ref(struct vb2_v4l2_buffer *vbuf)
+{
+ struct venus_buffer *buf = to_venus_buffer(vbuf);
+
+ buf->flags |= HFI_BUFFERFLAG_READONLY;
+}
+EXPORT_SYMBOL_GPL(helper_acquire_buf_ref);
+
+static int is_buf_refed(struct venus_inst *inst, struct vb2_v4l2_buffer *vbuf)
+{
+ struct venus_buffer *buf = to_venus_buffer(vbuf);
+
+ if (buf->flags & HFI_BUFFERFLAG_READONLY) {
+ list_add_tail(&buf->ref_list, &inst->delayed_process);
+ schedule_work(&inst->delayed_process_work);
+ return 1;
+ }
+
+ return 0;
+}
+
+struct vb2_v4l2_buffer *
+helper_find_buf(struct venus_inst *inst, unsigned int type, u32 idx)
+{
+ struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
+
+ if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+ return v4l2_m2m_src_buf_remove_by_idx(m2m_ctx, idx);
+ else
+ return v4l2_m2m_dst_buf_remove_by_idx(m2m_ctx, idx);
+}
+EXPORT_SYMBOL_GPL(helper_find_buf);
+
+int helper_vb2_buf_init(struct vb2_buffer *vb)
+{
+ struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct venus_buffer *buf = to_venus_buffer(vbuf);
+ struct sg_table *sgt;
+
+ sgt = vb2_dma_sg_plane_desc(vb, 0);
+ if (!sgt)
+ return -EFAULT;
+
+ buf->size = vb2_plane_size(vb, 0);
+ buf->dma_addr = sg_dma_address(sgt->sgl);
+
+ if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ list_add_tail(&buf->reg_list, &inst->registeredbufs);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(helper_vb2_buf_init);
+
+int helper_vb2_buf_prepare(struct vb2_buffer *vb)
+{
+ struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+
+ if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
+ vb2_plane_size(vb, 0) < inst->output_buf_size)
+ return -EINVAL;
+ if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
+ vb2_plane_size(vb, 0) < inst->input_buf_size)
+ return -EINVAL;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(helper_vb2_buf_prepare);
+
+void helper_vb2_buf_queue(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+ struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
+ int ret;
+
+ mutex_lock(&inst->lock);
+
+ if (inst->cmd_stop) {
+ vbuf->flags |= V4L2_BUF_FLAG_LAST;
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
+ inst->cmd_stop = false;
+ goto unlock;
+ }
+
+ v4l2_m2m_buf_queue(m2m_ctx, vbuf);
+
+ if (!(inst->streamon_out & inst->streamon_cap))
+ goto unlock;
+
+ ret = is_buf_refed(inst, vbuf);
+ if (ret)
+ goto unlock;
+
+ ret = session_process_buf(inst, vbuf);
+ if (ret)
+ return_buf_error(inst, vbuf);
+
+unlock:
+ mutex_unlock(&inst->lock);
+}
+EXPORT_SYMBOL_GPL(helper_vb2_buf_queue);
+
+void helper_buffers_done(struct venus_inst *inst, enum vb2_buffer_state state)
+{
+ struct vb2_v4l2_buffer *buf;
+
+ while ((buf = v4l2_m2m_src_buf_remove(inst->m2m_ctx)))
+ v4l2_m2m_buf_done(buf, state);
+ while ((buf = v4l2_m2m_dst_buf_remove(inst->m2m_ctx)))
+ v4l2_m2m_buf_done(buf, state);
+}
+EXPORT_SYMBOL_GPL(helper_buffers_done);
+
+void helper_vb2_stop_streaming(struct vb2_queue *q)
+{
+ struct venus_inst *inst = vb2_get_drv_priv(q);
+ struct venus_core *core = inst->core;
+ int ret;
+
+ mutex_lock(&inst->lock);
+
+ if (inst->streamon_out & inst->streamon_cap) {
+ ret = hfi_session_stop(inst);
+ ret |= hfi_session_unload_res(inst);
+ ret |= session_unregister_bufs(inst);
+ ret |= intbufs_free(inst);
+ ret |= hfi_session_deinit(inst);
+
+ if (inst->session_error || core->sys_error)
+ ret = -EIO;
+
+ if (ret)
+ hfi_session_abort(inst);
+
+ load_scale_clocks(core);
+ }
+
+ helper_buffers_done(inst, VB2_BUF_STATE_ERROR);
+
+ if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+ inst->streamon_out = 0;
+ else
+ inst->streamon_cap = 0;
+
+ mutex_unlock(&inst->lock);
+}
+EXPORT_SYMBOL_GPL(helper_vb2_stop_streaming);
+
+int helper_vb2_start_streaming(struct venus_inst *inst)
+{
+ struct venus_core *core = inst->core;
+ int ret;
+
+ ret = intbufs_alloc(inst);
+ if (ret)
+ return ret;
+
+ ret = session_register_bufs(inst);
+ if (ret)
+ goto err_bufs_free;
+
+ load_scale_clocks(core);
+
+ ret = hfi_session_load_res(inst);
+ if (ret)
+ goto err_unreg_bufs;
+
+ ret = hfi_session_start(inst);
+ if (ret)
+ goto err_unload_res;
+
+ return 0;
+
+err_unload_res:
+ hfi_session_unload_res(inst);
+err_unreg_bufs:
+ session_unregister_bufs(inst);
+err_bufs_free:
+ intbufs_free(inst);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(helper_vb2_start_streaming);
+
+void helper_m2m_device_run(void *priv)
+{
+ struct venus_inst *inst = priv;
+ struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
+ struct v4l2_m2m_buffer *buf, *n;
+ int ret;
+
+ mutex_lock(&inst->lock);
+
+ v4l2_m2m_for_each_dst_buf_safe(m2m_ctx, buf, n) {
+ ret = session_process_buf(inst, &buf->vb);
+ if (ret)
+ return_buf_error(inst, &buf->vb);
+ }
+
+ v4l2_m2m_for_each_src_buf_safe(m2m_ctx, buf, n) {
+ ret = session_process_buf(inst, &buf->vb);
+ if (ret)
+ return_buf_error(inst, &buf->vb);
+ }
+
+ mutex_unlock(&inst->lock);
+}
+EXPORT_SYMBOL_GPL(helper_m2m_device_run);
+
+void helper_m2m_job_abort(void *priv)
+{
+ struct venus_inst *inst = priv;
+
+ v4l2_m2m_job_finish(inst->m2m_dev, inst->m2m_ctx);
+}
+EXPORT_SYMBOL_GPL(helper_m2m_job_abort);
+
+void helper_init_instance(struct venus_inst *inst)
+{
+ if (inst->session_type == VIDC_SESSION_TYPE_DEC) {
+ INIT_LIST_HEAD(&inst->delayed_process);
+ INIT_WORK(&inst->delayed_process_work,
+ delayed_process_buf_func);
+ }
+}
+EXPORT_SYMBOL_GPL(helper_init_instance);
diff --git a/drivers/media/platform/qcom/venus/helpers.h b/drivers/media/platform/qcom/venus/helpers.h
new file mode 100644
index 000000000000..1ff5005b5add
--- /dev/null
+++ b/drivers/media/platform/qcom/venus/helpers.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2017 Linaro Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+#ifndef __VENUS_HELPERS_H__
+#define __VENUS_HELPERS_H__
+
+#include <media/videobuf2-v4l2.h>
+
+struct venus_inst;
+
+struct vb2_v4l2_buffer *helper_find_buf(struct venus_inst *inst,
+ unsigned int type, u32 idx);
+void helper_buffers_done(struct venus_inst *inst, enum vb2_buffer_state state);
+int helper_vb2_buf_init(struct vb2_buffer *vb);
+int helper_vb2_buf_prepare(struct vb2_buffer *vb);
+void helper_vb2_buf_queue(struct vb2_buffer *vb);
+void helper_vb2_stop_streaming(struct vb2_queue *q);
+int helper_vb2_start_streaming(struct venus_inst *inst);
+void helper_m2m_device_run(void *priv);
+void helper_m2m_job_abort(void *priv);
+int helper_get_bufreq(struct venus_inst *inst, u32 type,
+ struct hfi_buffer_requirements *req);
+int helper_set_input_resolution(struct venus_inst *inst, unsigned int width,
+ unsigned int height);
+int helper_set_output_resolution(struct venus_inst *inst, unsigned int width,
+ unsigned int height);
+int helper_set_num_bufs(struct venus_inst *inst, unsigned int input_bufs,
+ unsigned int output_bufs);
+int helper_set_color_format(struct venus_inst *inst, u32 fmt);
+void helper_acquire_buf_ref(struct vb2_v4l2_buffer *vbuf);
+void helper_release_buf_ref(struct venus_inst *inst, unsigned int idx);
+void helper_init_instance(struct venus_inst *inst);
+#endif
--
2.7.4
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