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From: Alok Chauhan <alokc@codeaurora.org>
To: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
	Alok Chauhan <alokc@codeaurora.org>,
	Karthikeyan Ramasubramanian <kramasub@codeaurora.org>,
	linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: andy.gross@linaro.org, david.brown@linaro.org,
	georgi.djakov@linaro.org, dianders@chromium.org,
	swboyd@chromium.org, bjorn.andersson@linaro.org
Subject: [PATCH 3/6] i2c: i2c-qcom-geni: Add interconnect support
Date: Mon, 21 Jan 2019 16:51:40 +0530	[thread overview]
Message-ID: <1548069703-26595-4-git-send-email-alokc@codeaurora.org> (raw)
In-Reply-To: <1548069703-26595-1-git-send-email-alokc@codeaurora.org>

Get the interconnect paths for I2C based Serial Engine device
and vote accordingly based on maximum supported I2C frequency.

Signed-off-by: Alok Chauhan <alokc@codeaurora.org>
---
 drivers/i2c/busses/i2c-qcom-geni.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
index db075bc..e8fe63a 100644
--- a/drivers/i2c/busses/i2c-qcom-geni.c
+++ b/drivers/i2c/busses/i2c-qcom-geni.c
@@ -14,6 +14,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/qcom-geni-se.h>
 #include <linux/spinlock.h>
+#include <linux/interconnect.h>
 
 #define SE_I2C_TX_TRANS_LEN		0x26c
 #define SE_I2C_RX_TRANS_LEN		0x270
@@ -508,6 +509,15 @@ static int geni_i2c_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	/* Set the bus quota to a reasonable value */
+	gi2c->se.avg_bw = Bps_to_icc(1000);
+	gi2c->se.peak_bw = Bps_to_icc(76800000);
+	ret = geni_interconnect_init(&gi2c->se);
+	if (ret) {
+		dev_err(&pdev->dev, "interconnect_init failed %d\n", ret);
+		return ret;
+	}
+
 	ret = device_property_read_u32(&pdev->dev, "clock-frequency",
 							&gi2c->clk_freq_out);
 	if (ret) {
@@ -611,6 +621,8 @@ static int __maybe_unused geni_i2c_runtime_suspend(struct device *dev)
 		gi2c->suspended = 1;
 	}
 
+	geni_icc_update_bw(&gi2c->se, false);
+
 	return 0;
 }
 
@@ -619,6 +631,7 @@ static int __maybe_unused geni_i2c_runtime_resume(struct device *dev)
 	int ret;
 	struct geni_i2c_dev *gi2c = dev_get_drvdata(dev);
 
+	geni_icc_update_bw(&gi2c->se, true);
 	ret = geni_se_resources_on(&gi2c->se);
 	if (ret)
 		return ret;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

  parent reply	other threads:[~2019-01-21 11:21 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-21 11:21 [PATCH 0/6] Add interconnect support for GENI QUPs Alok Chauhan
2019-01-21 11:21 ` [PATCH 1/6] dt-bindings: soc: qcom: Add interconnect binding for GENI QUP Alok Chauhan
2019-01-22  6:43   ` alokc
2019-01-21 11:21 ` [PATCH 2/6] soc: qcom: Add wrapper to support for Interconnect path Alok Chauhan
2019-01-21 11:21 ` Alok Chauhan [this message]
2019-01-22  6:54   ` [PATCH 3/6] i2c: i2c-qcom-geni: Add interconnect support alokc
2019-01-21 11:21 ` [PATCH 4/6] spi: spi-geni-qcom: " Alok Chauhan
2019-01-21 12:43   ` Mark Brown
2019-01-22  6:21     ` alokc
2019-01-21 11:21 ` [PATCH 5/6] tty: serial: qcom_geni_serial: " Alok Chauhan
2019-01-21 11:21 ` [PATCH 6/6] arm64: dts: sdm845: Add interconnect for GENI QUP Alok Chauhan
2019-01-22  6:33 [PATCH 0/6] Add interconnect support for GENI QUPs Alok Chauhan
2019-01-22  6:33 ` [PATCH 3/6] i2c: i2c-qcom-geni: Add interconnect support Alok Chauhan
2019-01-22  9:07   ` Wolfram Sang
2019-01-22  9:13   ` Peter Rosin
2019-01-23  6:51     ` alokc
2019-01-24  1:19   ` Evan Green
2020-02-17 13:29 [PATCH 0/6] Add interconnect support to UART, I2C, SPI and QSPI Akash Asthana
2020-02-17 13:30 ` [PATCH 3/6] i2c: i2c-qcom-geni: Add interconnect support Akash Asthana
2020-02-17 13:30   ` Akash Asthana
2020-02-18 22:47   ` Matthias Kaehlcke
2020-02-18 22:47     ` Matthias Kaehlcke
2020-02-19 13:47     ` Akash Asthana
2020-02-21  0:24       ` Matthias Kaehlcke

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