linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Stanimir Varbanov <stanimir.varbanov@linaro.org>
To: Ohad Ben-Cohen <ohad@wizery.com>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Stephen Boyd <sboyd@codeaurora.org>,
	Andy Gross <andy.gross@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
	linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
	devicetree@vger.kernel.org,
	Stanimir Varbanov <stanimir.varbanov@linaro.org>
Subject: [PATCH v2 1/3] firmware: qcom: scm: add a video command for state setting
Date: Mon,  7 Nov 2016 19:30:51 +0200	[thread overview]
Message-ID: <1478539853-23218-2-git-send-email-stanimir.varbanov@linaro.org> (raw)
In-Reply-To: <1478539853-23218-1-git-send-email-stanimir.varbanov@linaro.org>

This scm call is used to change the video core state, more
specifically it is used to suspend and resume the core.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
---
 drivers/firmware/qcom_scm-32.c | 18 ++++++++++++++++++
 drivers/firmware/qcom_scm-64.c | 16 ++++++++++++++++
 drivers/firmware/qcom_scm.c    | 16 ++++++++++++++++
 drivers/firmware/qcom_scm.h    |  2 ++
 include/linux/qcom_scm.h       |  2 ++
 5 files changed, 54 insertions(+)

diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c
index c6aeedbdcbb0..82c1d8d0d36b 100644
--- a/drivers/firmware/qcom_scm-32.c
+++ b/drivers/firmware/qcom_scm-32.c
@@ -560,3 +560,21 @@ int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
 
 	return ret ? : le32_to_cpu(out);
 }
+
+int __qcom_scm_video_set_state(struct device *dev, u32 state, u32 spare)
+{
+	struct {
+		__le32 state;
+		__le32 spare;
+	} req;
+	__le32 scm_ret = 0;
+	int ret;
+
+	req.state = cpu_to_le32(state);
+	req.spare = cpu_to_le32(spare);
+
+	ret = qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_VIDEO_SET_STATE,
+			    &req, sizeof(req), &scm_ret, sizeof(scm_ret));
+
+	return ret ? : le32_to_cpu(scm_ret);
+}
diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c
index 4a0f5ead4fb5..68484ea2aa51 100644
--- a/drivers/firmware/qcom_scm-64.c
+++ b/drivers/firmware/qcom_scm-64.c
@@ -358,3 +358,19 @@ int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
 
 	return ret ? : res.a1;
 }
+
+int __qcom_scm_video_set_state(struct device *dev, u32 state, u32 spare)
+{
+	struct qcom_scm_desc desc = {0};
+	struct arm_smccc_res res;
+	int ret;
+
+	desc.args[0] = state;
+	desc.args[1] = spare;
+	desc.arginfo = QCOM_SCM_ARGS(2);
+
+	ret = qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_VIDEO_SET_STATE,
+			    &desc, &res);
+
+	return ret ? : res.a1;
+}
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index d95c70227c05..7e364691a87c 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -320,6 +320,22 @@ bool qcom_scm_is_available(void)
 }
 EXPORT_SYMBOL(qcom_scm_is_available);
 
+int qcom_scm_video_set_state(u32 state, u32 spare)
+{
+	int ret;
+
+	ret = qcom_scm_clk_enable();
+	if (ret)
+		return ret;
+
+	ret = __qcom_scm_video_set_state(__scm->dev, state, spare);
+
+	qcom_scm_clk_disable();
+
+	return ret;
+}
+EXPORT_SYMBOL(qcom_scm_video_set_state);
+
 static int qcom_scm_probe(struct platform_device *pdev)
 {
 	struct qcom_scm *scm;
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index 3584b00fe7e6..4830559b2639 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -15,6 +15,8 @@
 #define QCOM_SCM_SVC_BOOT		0x1
 #define QCOM_SCM_BOOT_ADDR		0x1
 #define QCOM_SCM_BOOT_ADDR_MC		0x11
+#define QCOM_SCM_VIDEO_SET_STATE	0xa
+extern int __qcom_scm_video_set_state(struct device *dev, u32 state, u32 spare);
 
 #define QCOM_SCM_FLAG_HLOS		0x01
 #define QCOM_SCM_FLAG_COLDBOOT_MC	0x02
diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h
index cc32ab852fbc..2ece81a6b078 100644
--- a/include/linux/qcom_scm.h
+++ b/include/linux/qcom_scm.h
@@ -46,4 +46,6 @@ extern void qcom_scm_cpu_power_down(u32 flags);
 
 extern u32 qcom_scm_get_version(void);
 
+extern int qcom_scm_video_set_state(u32 state, u32 spare);
+
 #endif
-- 
2.7.4

  reply	other threads:[~2016-11-07 17:31 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-07 17:30 [PATCH v2 0/3] Venus remoteproc driver Stanimir Varbanov
2016-11-07 17:30 ` Stanimir Varbanov [this message]
2016-11-10  1:52   ` [PATCH v2 1/3] firmware: qcom: scm: add a video command for state setting Stephen Boyd
2016-11-10  8:05     ` Stanimir Varbanov
2016-11-07 17:30 ` [PATCH v2 2/3] dt-binding: remoteproc: venus rproc dt binding document Stanimir Varbanov
2016-11-10  1:54   ` Stephen Boyd
2016-11-14 16:58   ` Rob Herring
2016-11-07 17:30 ` [PATCH v2 3/3] remoteproc: qcom: add Venus video core firmware loader driver Stanimir Varbanov
2016-11-14 19:16   ` Stephen Boyd
2016-11-17  9:08     ` Stanimir Varbanov
2016-11-18 17:23     ` Bjorn Andersson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1478539853-23218-2-git-send-email-stanimir.varbanov@linaro.org \
    --to=stanimir.varbanov@linaro.org \
    --cc=andy.gross@linaro.org \
    --cc=bjorn.andersson@linaro.org \
    --cc=devicetree@vger.kernel.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-remoteproc@vger.kernel.org \
    --cc=linux-soc@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=ohad@wizery.com \
    --cc=robh+dt@kernel.org \
    --cc=sboyd@codeaurora.org \
    --cc=srinivas.kandagatla@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).