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disp: msm: add support to request mdp core clk through mmrm

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For Waipio onwards, mdp core clock rate needs to be requested
through the mmrm driver, which will make sure the requested
rate can be sustained by the its power rail, which is shared
by multiple clients.
Current change adds the support to request the mdp core clk rate
through mmrm driver as well as returns the corresponding failures
to user space during when a rate cannot be supported by the
system.

Change-Id: Icc0e8ab5b71e8c99baf7913bdbd96d9504cc11ae
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>
This commit is contained in:
Ingrid Gallardo
2020-09-04 12:13:42 -07:00
parent e37d7dd1b6
commit a005a785fe
7 changed files with 492 additions and 17 deletions
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23
include/linux/sde_io_util.h
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@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2012, 2017-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2012, 2017-2021, The Linux Foundation. All rights reserved.
*/
#ifndef __SDE_IO_UTIL_H__
@@ -11,6 +11,7 @@
#include <linux/regulator/consumer.h>
#include <linux/i2c.h>
#include <linux/types.h>
#include <linux/soc/qcom/msm_mmrm.h>
#ifdef DEBUG
#define DEV_DBG(fmt, args...) pr_err(fmt, ##args)
@@ -62,15 +63,31 @@ struct dss_gpio {
enum dss_clk_type {
DSS_CLK_AHB, /* no set rate. rate controlled through rpm */
DSS_CLK_PCLK,
DSS_CLK_MMRM, /* set rate called through mmrm driver */
DSS_CLK_OTHER,
};
struct dss_clk_mmrm_cb {
void *phandle;
struct dss_clk *clk;
};
struct dss_clk_mmrm {
unsigned int clk_id;
unsigned int flags;
struct mmrm_client *mmrm_client;
struct dss_clk_mmrm_cb *mmrm_cb_data;
unsigned long mmrm_requested_clk;
wait_queue_head_t mmrm_cb_wq;
};
struct dss_clk {
struct clk *clk; /* clk handle */
char clk_name[32];
enum dss_clk_type type;
unsigned long rate;
unsigned long max_rate;
struct dss_clk_mmrm mmrm;
};
struct dss_module_power {
@@ -101,6 +118,10 @@ int msm_dss_get_vreg(struct device *dev, struct dss_vreg *in_vreg,
int msm_dss_enable_vreg(struct dss_vreg *in_vreg, int num_vreg, int enable);
int msm_dss_get_clk(struct device *dev, struct dss_clk *clk_arry, int num_clk);
int msm_dss_mmrm_register(struct device *dev, struct dss_module_power *mp,
int (*cb_fnc)(struct mmrm_client_notifier_data *data), void *phandle,
bool *mmrm_enable);
void msm_dss_mmrm_deregister(struct device *dev, struct dss_module_power *mp);
void msm_dss_put_clk(struct dss_clk *clk_arry, int num_clk);
int msm_dss_clk_set_rate(struct dss_clk *clk_arry, int num_clk);
int msm_dss_single_clk_set_rate(struct dss_clk *clk);