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author | 2018-10-17 09:18:21 -0400 | |
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committer | 2018-11-23 06:32:00 -0500 | |
commit | f9799fcce4bb383206c08a2ac960039efdfa4a2f (patch) | |
tree | 0a1b5a9a999b9dea32270d7e4546d9f8893822f4 /drivers/media/platform/qcom/venus/firmware.c | |
parent | media: venus: firmware: move load firmware in a separate function (diff) | |
download | linux-dev-f9799fcce4bb383206c08a2ac960039efdfa4a2f.tar.xz linux-dev-f9799fcce4bb383206c08a2ac960039efdfa4a2f.zip |
media: venus: firmware: register separate platform_device for firmware loader
This registers a firmware platform_device and associate it with
video-firmware DT subnode. Then calls dma configure to initialize
dma and iommu.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: Alexandre Courbot <acourbot@chromium.org>
Tested-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/platform/qcom/venus/firmware.c')
-rw-r--r-- | drivers/media/platform/qcom/venus/firmware.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c index 1d4f066db911..98b3b166aa1b 100644 --- a/drivers/media/platform/qcom/venus/firmware.c +++ b/drivers/media/platform/qcom/venus/firmware.c @@ -18,6 +18,8 @@ #include <linux/io.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/of_device.h> #include <linux/qcom_scm.h> #include <linux/sizes.h> #include <linux/soc/qcom/mdt_loader.h> @@ -144,3 +146,56 @@ int venus_shutdown(struct device *dev) { return qcom_scm_pas_shutdown(VENUS_PAS_ID); } + +int venus_firmware_init(struct venus_core *core) +{ + struct platform_device_info info; + struct platform_device *pdev; + struct device_node *np; + int ret; + + np = of_get_child_by_name(core->dev->of_node, "video-firmware"); + if (!np) { + core->use_tz = true; + return 0; + } + + memset(&info, 0, sizeof(info)); + info.fwnode = &np->fwnode; + info.parent = core->dev; + info.name = np->name; + info.dma_mask = DMA_BIT_MASK(32); + + pdev = platform_device_register_full(&info); + if (IS_ERR(pdev)) { + of_node_put(np); + return PTR_ERR(pdev); + } + + pdev->dev.of_node = np; + + ret = of_dma_configure(&pdev->dev, np, true); + if (ret) { + dev_err(core->dev, "dma configure fail\n"); + goto err_unregister; + } + + core->fw.dev = &pdev->dev; + + of_node_put(np); + + return 0; + +err_unregister: + platform_device_unregister(pdev); + of_node_put(np); + return ret; +} + +void venus_firmware_deinit(struct venus_core *core) +{ + if (!core->fw.dev) + return; + + platform_device_unregister(to_platform_device(core->fw.dev)); +} |