From: Deepak Kumar Singh <deesin@codeaurora.org>
To: bjorn.andersson@linaro.org, clew@codeaurora.org
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-remoteproc@vger.kernel.org,
Deepak Kumar Singh <deesin@codeaurora.org>,
Andy Gross <agross@kernel.org>
Subject: [PATCH V1 1/2] soc: qcom: aoss: Expose send for generic usecase
Date: Fri, 2 Apr 2021 11:47:17 +0530 [thread overview]
Message-ID: <1617344238-12137-2-git-send-email-deesin@codeaurora.org> (raw)
In-Reply-To: <1617344238-12137-1-git-send-email-deesin@codeaurora.org>
Not all upcoming usecases will have an interface to allow the aoss
driver to hook onto. Expose the send api and create a get function to
enable drivers to send their own messages to aoss.
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Deepak Kumar Singh <deesin@codeaurora.org>
---
drivers/soc/qcom/qcom_aoss.c | 36 +++++++++++++++++++++++++++++++++++-
1 file changed, 35 insertions(+), 1 deletion(-)
diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c
index 53acb94..5c643f0 100644
--- a/drivers/soc/qcom/qcom_aoss.c
+++ b/drivers/soc/qcom/qcom_aoss.c
@@ -8,10 +8,12 @@
#include <linux/io.h>
#include <linux/mailbox_client.h>
#include <linux/module.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
#include <linux/thermal.h>
#include <linux/slab.h>
+#include <linux/soc/qcom/qcom_aoss.h>
#define QMP_DESC_MAGIC 0x0
#define QMP_DESC_VERSION 0x4
@@ -223,11 +225,14 @@ static bool qmp_message_empty(struct qmp *qmp)
*
* Return: 0 on success, negative errno on failure
*/
-static int qmp_send(struct qmp *qmp, const void *data, size_t len)
+int qmp_send(struct qmp *qmp, const void *data, size_t len)
{
long time_left;
int ret;
+ if (!qmp || !data)
+ return -EINVAL;
+
if (WARN_ON(len + sizeof(u32) > qmp->size))
return -EINVAL;
@@ -261,6 +266,7 @@ static int qmp_send(struct qmp *qmp, const void *data, size_t len)
return ret;
}
+EXPORT_SYMBOL(qmp_send);
static int qmp_qdss_clk_prepare(struct clk_hw *hw)
{
@@ -515,6 +521,34 @@ static void qmp_cooling_devices_remove(struct qmp *qmp)
thermal_cooling_device_unregister(qmp->cooling_devs[i].cdev);
}
+/**
+ * qmp_get() - get a qmp handle from a device
+ * @dev: client device pointer
+ *
+ * Return: handle to qmp device on success, ERR_PTR() on failure
+ */
+struct qmp *qmp_get(struct device *dev)
+{
+ struct platform_device *pdev;
+ struct device_node *np;
+ struct qmp *qmp;
+
+ if (!dev || !dev->of_node)
+ return ERR_PTR(-ENODEV);
+
+ np = of_parse_phandle(dev->of_node, "qcom,qmp", 0);
+ if (!np)
+ return ERR_PTR(-ENODEV);
+
+ pdev = of_find_device_by_node(np);
+ if (!pdev)
+ return ERR_PTR(-EINVAL);
+
+ qmp = platform_get_drvdata(pdev);
+ return qmp ? qmp : ERR_PTR(-EPROBE_DEFER);
+}
+EXPORT_SYMBOL(qmp_get);
+
static int qmp_probe(struct platform_device *pdev)
{
struct resource *res;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2021-04-02 6:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-02 6:17 [PATCH V1 0/2] soc: qcom: aoss: Expose send for generic usecase Deepak Kumar Singh
2021-04-02 6:17 ` Deepak Kumar Singh [this message]
2021-04-02 9:09 ` [PATCH V1 1/2] " kernel test robot
2021-04-02 9:50 ` kernel test robot
2021-04-04 17:17 ` Bjorn Andersson
2021-04-09 7:31 ` Manivannan Sadhasivam
2021-04-13 0:06 ` Bjorn Andersson
2021-04-02 6:17 ` [PATCH V1 2/2] soc: qcom: aoss: Add debugfs entry Deepak Kumar Singh
2021-04-04 16:59 ` Bjorn Andersson
2021-04-04 17:20 ` [PATCH V1 0/2] soc: qcom: aoss: Expose send for generic usecase Bjorn Andersson
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