From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Stanimir Varbanov <stanimir.varbanov@linaro.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Hans Verkuil <hverkuil@xs4all.nl>,
Andy Gross <andy.gross@linaro.org>,
Stephen Boyd <sboyd@codeaurora.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v8 05/10] media: venus: adding core part and helper functions
Date: Sat, 29 Apr 2017 13:22:47 -0700 [thread overview]
Message-ID: <20170429202247.GV15143@minitux> (raw)
In-Reply-To: <20170428220245.GA3283@jcrouse-lnx.qualcomm.com>
On Fri 28 Apr 15:02 PDT 2017, Jordan Crouse wrote:
> On Fri, Apr 28, 2017 at 12:13:52PM +0300, Stanimir Varbanov wrote:
> > +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;
> > +}
>
> Hey, this looks familiar - almost line for line identical to what we'll need to
> do for GPU.
>
> Bjorn - Is this enough to qualify for generic status in the mdt_loader code?
> I know its just two consumers, but it would save 50 or 60 lines of code between
> the two drivers and be easier to maintain.
>
I think the code setting up the struct device for memory allocation
should be done during probe of the parent, so that I don't think should
be shared.
The part that allocates memory from a device, loads the mdt into that
memory and calls auth_and_reset() sounds like a useful thing to move to
the mdt_loader.c
Regards,
Bjorn
next prev parent reply other threads:[~2017-04-29 20:22 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-28 9:13 [PATCH v8 00/10] Qualcomm video decoder/encoder driver Stanimir Varbanov
2017-04-28 9:13 ` [PATCH v8 01/10] firmware: qcom_scm: Fix to allow COMPILE_TEST-ing Stanimir Varbanov
2017-05-02 19:22 ` Bjorn Andersson
2017-05-05 11:34 ` Hans Verkuil
2017-05-05 13:23 ` Stanimir Varbanov
2017-05-05 14:30 ` Hans Verkuil
2017-04-28 9:13 ` [PATCH v8 02/10] media: v4l2-mem2mem: extend m2m APIs for more accurate buffer management Stanimir Varbanov
2017-05-05 11:36 ` Hans Verkuil
2017-04-28 9:13 ` [PATCH v8 03/10] doc: DT: venus: binding document for Qualcomm video driver Stanimir Varbanov
2017-04-28 9:13 ` [PATCH v8 04/10] MAINTAINERS: Add Qualcomm Venus video accelerator driver Stanimir Varbanov
2017-04-28 9:13 ` [PATCH v8 05/10] media: venus: adding core part and helper functions Stanimir Varbanov
2017-04-28 22:02 ` Jordan Crouse
2017-04-29 20:22 ` Bjorn Andersson [this message]
2017-05-02 9:17 ` Stanimir Varbanov
2017-05-03 13:46 ` Jordan Crouse
2017-04-29 22:21 ` Sakari Ailus
2017-05-02 8:52 ` Stanimir Varbanov
2017-05-02 18:52 ` Bjorn Andersson
2017-05-05 13:29 ` Stanimir Varbanov
2017-04-28 9:13 ` [PATCH v8 06/10] media: venus: vdec: add video decoder files Stanimir Varbanov
2017-04-28 9:13 ` [PATCH v8 07/10] media: venus: venc: add video encoder files Stanimir Varbanov
2017-04-28 9:13 ` [PATCH v8 08/10] media: venus: hfi: add Host Firmware Interface (HFI) Stanimir Varbanov
2017-04-28 9:13 ` [PATCH v8 09/10] media: venus: hfi: add Venus HFI files Stanimir Varbanov
2017-04-28 9:13 ` [PATCH v8 10/10] media: venus: enable building of Venus video driver Stanimir Varbanov
2017-05-05 12:44 ` [PATCH v8 00/10] Qualcomm video decoder/encoder driver Hans Verkuil
2017-05-05 13:42 ` Stanimir Varbanov
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