[PATCH v1 3/4] soc: qcom: geni-se: Export function geni_se_clks_off()

Mukesh Kumar Savaliya
2024-08-29T09:26:10Z

Currently driver provides geni_se_resources_off() function to turn
off SE resources like clocks, pinctrl. But we don't have function to
control clock separately, hence export function geni_se_clks_off()
to turn off clocks separately without disturbing GPIO.

The client drivers like i2c requires this function for use case where
i2c SE is shared between two subsystems.

Signed-off-by: Mukesh Kumar Savaliya <quic_msavaliy@quicinc.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