From: Alok Chauhan <alokc@codeaurora.org>
To: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-spi@vger.kernel.org, linux-serial@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>
Cc: andy.gross@linaro.org, david.brown@linaro.org,
georgi.djakov@linaro.org, dianders@chromium.org,
swboyd@chromium.org, bjorn.andersson@linaro.org,
Alok Chauhan <alokc@codeaurora.org>
Subject: [PATCH 5/6] tty: serial: qcom_geni_serial: Add interconnect support
Date: Tue, 22 Jan 2019 12:03:35 +0530 [thread overview]
Message-ID: <1548138816-1149-6-git-send-email-alokc@codeaurora.org> (raw)
In-Reply-To: <1548138816-1149-1-git-send-email-alokc@codeaurora.org>
Get the interconnect paths for Uart based Serial Engine device
and vote accordingly based on maximum supported Uart frequency.
Signed-off-by: Alok Chauhan <alokc@codeaurora.org>
---
drivers/tty/serial/qcom_geni_serial.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index a72d6d9..e2ea499 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -19,6 +19,7 @@
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
+#include <linux/interconnect.h>
/* UART specific GENI registers */
#define SE_UART_LOOPBACK_CFG 0x22c
@@ -1348,6 +1349,22 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
return ret;
}
+ /* Set the bus quota to a reasonable value */
+ port->se.avg_bw = console ? Bps_to_icc(1000) : Bps_to_icc(2500);
+ port->se.peak_bw = Bps_to_icc(76800000);
+ ret = geni_interconnect_init(&port->se);
+ if (ret) {
+ dev_err(&pdev->dev, "interconnect_init failed %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * Vote for interconnect path early. This has to move as part of
+ * Runtime PM APIs when implemented for better control betwen
+ * console and non-console usecases
+ */
+ geni_icc_update_bw(&port->se, true);
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -EINVAL;
@@ -1385,8 +1402,15 @@ static int __maybe_unused qcom_geni_serial_sys_suspend(struct device *dev)
{
struct qcom_geni_serial_port *port = dev_get_drvdata(dev);
struct uart_port *uport = &port->uport;
+ int ret;
+
+ ret = uart_suspend_port(uport->private_data, uport);
+ if (ret)
+ return ret;
+
+ geni_icc_update_bw(&port->se, false);
- return uart_suspend_port(uport->private_data, uport);
+ return 0;
}
static int __maybe_unused qcom_geni_serial_sys_resume(struct device *dev)
@@ -1394,6 +1418,7 @@ static int __maybe_unused qcom_geni_serial_sys_resume(struct device *dev)
struct qcom_geni_serial_port *port = dev_get_drvdata(dev);
struct uart_port *uport = &port->uport;
+ geni_icc_update_bw(&port->se, true);
return uart_resume_port(uport->private_data, uport);
}
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2019-01-22 6:33 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-22 6:33 [PATCH 0/6] Add interconnect support for GENI QUPs Alok Chauhan
2019-01-22 6:33 ` [PATCH 1/6] dt-bindings: soc: qcom: Add interconnect binding for GENI QUP Alok Chauhan
2019-01-23 6:48 ` alokc
2019-01-23 17:07 ` Bjorn Andersson
2019-01-23 18:41 ` Georgi Djakov
2019-02-23 0:26 ` Rob Herring
2019-02-25 17:39 ` Georgi Djakov
2019-01-23 18:35 ` Georgi Djakov
2019-01-30 22:29 ` alokc
2019-01-24 1:10 ` Evan Green
2019-01-30 22:27 ` alokc
2019-01-22 6:33 ` [PATCH 2/6] soc: qcom: Add wrapper to support for Interconnect path Alok Chauhan
2019-01-23 7:02 ` alokc
2019-01-23 18:14 ` Bjorn Andersson
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
2019-01-22 6:33 ` [PATCH 4/6] spi: spi-geni-qcom: " Alok Chauhan
2019-01-22 20:29 ` Mark Brown
2019-01-23 7:15 ` alokc
2019-01-23 10:58 ` Mark Brown
2019-01-23 16:04 ` Mark Brown
2019-01-24 1:20 ` Evan Green
2019-01-22 6:33 ` Alok Chauhan [this message]
2019-01-23 6:53 ` [PATCH 5/6] tty: serial: qcom_geni_serial: " alokc
2019-01-22 6:33 ` [PATCH 6/6] arm64: dts: sdm845: Add interconnect for GENI QUP Alok Chauhan
2019-01-23 6:54 ` alokc
2019-01-23 6:45 ` [PATCH 0/6] Add interconnect support for GENI QUPs alokc
-- strict thread matches above, loose matches on Subject: below --
2019-01-21 11:21 Alok Chauhan
2019-01-21 11:21 ` [PATCH 5/6] tty: serial: qcom_geni_serial: Add interconnect support Alok Chauhan
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