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Message-Id: <1536931477-13018-4-git-send-email-vgarodia@codeaurora.org>
Date: Fri, 14 Sep 2018 18:54:35 +0530
From: Vikash Garodia <vgarodia@...eaurora.org>
To: stanimir.varbanov@...aro.org, hverkuil@...all.nl,
mchehab@...nel.org, robh@...nel.org, mark.rutland@....com,
andy.gross@...aro.org, arnd@...db.de, bjorn.andersson@...aro.org
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
devicetree@...r.kernel.org, acourbot@...omium.org,
vgarodia@...eaurora.org
Subject: [PATCH v7 3/5] venus: firmware: register separate platform_device for firmware loader
From: Stanimir Varbanov <stanimir.varbanov@...aro.org>
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@...aro.org>
---
drivers/media/platform/qcom/venus/core.c | 14 +++++---
drivers/media/platform/qcom/venus/core.h | 3 ++
drivers/media/platform/qcom/venus/firmware.c | 54 ++++++++++++++++++++++++++++
drivers/media/platform/qcom/venus/firmware.h | 2 ++
4 files changed, 69 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
index 75b9785..440f25f 100644
--- a/drivers/media/platform/qcom/venus/core.c
+++ b/drivers/media/platform/qcom/venus/core.c
@@ -284,6 +284,14 @@ static int venus_probe(struct platform_device *pdev)
if (ret < 0)
goto err_runtime_disable;
+ ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
+ if (ret)
+ goto err_runtime_disable;
+
+ ret = venus_firmware_init(core);
+ if (ret)
+ goto err_runtime_disable;
+
ret = venus_boot(core);
if (ret)
goto err_runtime_disable;
@@ -308,10 +316,6 @@ static int venus_probe(struct platform_device *pdev)
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;
@@ -347,6 +351,8 @@ static int venus_remove(struct platform_device *pdev)
venus_shutdown(dev);
of_platform_depopulate(dev);
+ venus_firmware_deinit(core);
+
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index dfd5c10..3a53d5d 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -130,6 +130,9 @@ struct venus_core {
struct device *dev;
struct device *dev_dec;
struct device *dev_enc;
+ struct video_firmware {
+ struct device *dev;
+ } fw;
bool no_tz;
struct mutex lock;
struct list_head instances;
diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c
index 34224eb..69a99cd 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 +146,55 @@ 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)
+ 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);
+ if (ret) {
+ dev_err(core->dev, "dma configure fail\n");
+ goto err_unregister;
+ }
+
+ core->fw.dev = &pdev->dev;
+ core->no_tz = true;
+
+ 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));
+}
diff --git a/drivers/media/platform/qcom/venus/firmware.h b/drivers/media/platform/qcom/venus/firmware.h
index 1343747..fd7edf0 100644
--- a/drivers/media/platform/qcom/venus/firmware.h
+++ b/drivers/media/platform/qcom/venus/firmware.h
@@ -16,6 +16,8 @@
struct device;
+int venus_firmware_init(struct venus_core *core);
+void venus_firmware_deinit(struct venus_core *core);
int venus_boot(struct venus_core *core);
int venus_shutdown(struct device *dev);
int venus_set_hw_state(struct venus_core *core, bool suspend);
--
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