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clk: qcom: Add clk_get_vdd_corner api for multiple clk_vdd_class

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Add clk_get_vdd_corner as some clocks have requirement to vote on
multiple clk_vdd_class for clock operations.

Change-Id: I03da2134f9a8439a734f7638b61479269a9cec89
Signed-off-by: Vivek Aknurwar <viveka@codeaurora.org>
This commit is contained in:
Vivek Aknurwar 2021-02-21 21:03:21 -08:00 committed by Mike Tipton
parent 31a720c522
commit c480ab75e3
2 changed files with 25 additions and 2 deletions
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24
drivers/clk/qcom/vdd-class.c
View File

@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved. */
/* Copyright (c) 2019-2021, The Linux Foundation. All rights reserved. */
#include <linux/clk-provider.h>
#include <linux/kernel.h>
@ -112,6 +112,28 @@ static int clk_unvote_vdd_class_level(struct clk_vdd_class *vdd_class, int level
return ret;
}
/**
* clk_get_vdd_voltage - Return corner voltage for a vdd class
* @vdd_data: vdd_class data for the clock
* @level: voltage level
*
* Returns corner voltage on success, -EERROR otherwise.
*/
int clk_get_vdd_voltage(struct clk_vdd_class_data *vdd_data, int vdd_level)
{
int i, corner = -EINVAL;
for (i = 0; i < vdd_data->num_vdd_classes; i++)
corner = max(corner, vdd_data->vdd_classes[i]->vdd_uv[vdd_level]);
if (vdd_data->vdd_class)
corner = max(corner, vdd_data->vdd_class->vdd_uv[vdd_level]);
return corner;
}
EXPORT_SYMBOL(clk_get_vdd_voltage);
/**
* clk_vote_vdd_level - Add a vote for a given voltage level
* @vdd_data: vdd_class data for the clock

3
drivers/clk/qcom/vdd-class.h
View File

@ -1,5 +1,5 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved. */
/* Copyright (c) 2019-2021, The Linux Foundation. All rights reserved. */
#ifndef __QCOM_CLK_VDD_CLASS_H__
#define __QCOM_CLK_VDD_CLASS_H__
@ -74,6 +74,7 @@ int clk_find_vdd_level(struct clk_hw *hw, struct clk_vdd_class_data *vdd_data,
unsigned long rate);
int clk_vote_vdd_level(struct clk_vdd_class_data *vdd_class, int level);
int clk_unvote_vdd_level(struct clk_vdd_class_data *vdd_class, int level);
int clk_get_vdd_voltage(struct clk_vdd_class_data *vdd_data, int vdd_level);
int clk_regulator_init(struct device *dev, const struct qcom_cc_desc *desc);
int clk_vdd_proxy_vote(struct device *dev, const struct qcom_cc_desc *desc);
int clk_vdd_proxy_unvote(struct device *dev, const struct qcom_cc_desc *desc);