linux-kernel - [PATCH v2 3/4] soc: qcom: geni-se: Export function geni_se_clks

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Message-Id: <20240906191438.4104329-4-quic_msavaliy@quicinc.com>
Date: Sat,  7 Sep 2024 00:44:37 +0530
From: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
To: konrad.dybcio@...aro.org, andersson@...nel.org, andi.shyti@...nel.org,
        linux-arm-msm@...r.kernel.org, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
        conor+dt@...nel.org, agross@...nel.org, devicetree@...r.kernel.org,
        vkoul@...nel.org, linux@...blig.org, dan.carpenter@...aro.org,
        Frank.Li@....com, konradybcio@...nel.org
Cc: quic_vdadhani@...cinc.com,
        Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
Subject: [PATCH v2 3/4] soc: qcom: geni-se: Export function geni_se_clks_off()

Currently the driver provides a function called geni_serial_resources_off()
to turn off resources like clocks and  pinctrl. We don't have a function to
control clocks separately hence, export the function geni_se_clks_off() to
turn off clocks separately without disturbing GPIO.

Client drivers like I2C require this function for use-cases where the I2C
SE is shared between two subsystems.

Signed-off-by: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
---
 drivers/soc/qcom/qcom-geni-se.c  | 4 +++-
 include/linux/soc/qcom/geni-se.h | 3 +++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
index 2e8f24d5da80..20166c8fc919 100644
--- a/drivers/soc/qcom/qcom-geni-se.c
+++ b/drivers/soc/qcom/qcom-geni-se.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 // Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+// Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
 
 /* Disable MMIO tracing to prevent excessive logging of unwanted MMIO traces */
 #define __DISABLE_TRACE_MMIO__
@@ -482,13 +483,14 @@ void geni_se_config_packing(struct geni_se *se, int bpw, int pack_words,
 }
 EXPORT_SYMBOL_GPL(geni_se_config_packing);
 
-static void geni_se_clks_off(struct geni_se *se)
+void geni_se_clks_off(struct geni_se *se)
 {
 	struct geni_wrapper *wrapper = se->wrapper;
 
 	clk_disable_unprepare(se->clk);
 	clk_bulk_disable_unprepare(wrapper->num_clks, wrapper->clks);
 }
+EXPORT_SYMBOL_GPL(geni_se_clks_off);
 
 /**
  * geni_se_resources_off() - Turn off resources associated with the serial
diff --git a/include/linux/soc/qcom/geni-se.h b/include/linux/soc/qcom/geni-se.h
index 0f038a1a0330..caf2c0c4505b 100644
--- a/include/linux/soc/qcom/geni-se.h
+++ b/include/linux/soc/qcom/geni-se.h
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #ifndef _LINUX_QCOM_GENI_SE
@@ -494,6 +495,8 @@ int geni_se_resources_off(struct geni_se *se);
 
 int geni_se_resources_on(struct geni_se *se);
 
+void geni_se_clks_off(struct geni_se *se);
+
 int geni_se_clk_tbl_get(struct geni_se *se, unsigned long **tbl);
 
 int geni_se_clk_freq_match(struct geni_se *se, unsigned long req_freq,
-- 
2.25.1