linux-kernel - [PATCH 2/3] interconnect: imx: Add imx_icc_get_bw and imx_icc

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Date:   Sat,  1 Jan 2022 17:52:44 +0200
From:   Abel Vesa <abel.vesa@....com>
To:     Georgi Djakov <djakov@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>
Cc:     Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>, linux-pm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] interconnect: imx: Add imx_icc_get_bw and imx_icc_aggregate functions

The aggregate function will return whatever is the highest
rate for that specific node. The imx_icc_get_bw sets the
initial avg and peak to 0 in order to avoid setting them to
INT_MAX by the interconnect core.

Signed-off-by: Abel Vesa <abel.vesa@....com>
---
 drivers/interconnect/imx/imx.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/interconnect/imx/imx.c b/drivers/interconnect/imx/imx.c
index 34bfc7936387..4d8a2a2d2608 100644
--- a/drivers/interconnect/imx/imx.c
+++ b/drivers/interconnect/imx/imx.c
@@ -25,6 +25,23 @@ struct imx_icc_node {
 	struct dev_pm_qos_request qos_req;
 };
 
+static int imx_icc_get_bw(struct icc_node *node, u32 *avg, u32 *peak)
+{
+	*avg = 0;
+	*peak = 0;
+
+	return 0;
+}
+
+static int imx_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
+		      u32 peak_bw, u32 *agg_avg, u32 *agg_peak)
+{
+	*agg_avg = max(*agg_avg, avg_bw);
+	*agg_peak = max(*agg_peak, peak_bw);
+
+	return 0;
+}
+
 static int imx_icc_node_set(struct icc_node *node)
 {
 	struct device *dev = node->provider->dev;
@@ -233,7 +250,8 @@ int imx_icc_register(struct platform_device *pdev,
 	if (!provider)
 		return -ENOMEM;
 	provider->set = imx_icc_set;
-	provider->aggregate = icc_std_aggregate;
+	provider->get_bw = imx_icc_get_bw;
+	provider->aggregate = imx_icc_aggregate;
 	provider->xlate = of_icc_xlate_onecell;
 	provider->data = data;
 	provider->dev = dev;
-- 
2.31.1