Merge tag 'samsung-drivers-5.5' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/drivers

Samsung soc drivers changes for v5.5 1. Minor fixes to Exynos Chipid driver. 2. Add Exynos Adaptive Supply Voltage driver allowing to adjust voltages used during CPU frequency scaling based on revision of SoC. This also pulls dependency from PM/OPP tree - driver uses newly added dev_pm_opp_adjust_voltage() function. * tag 'samsung-drivers-5.5' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux: soc: samsung: exynos-asv: Potential NULL dereference in exynos_asv_update_opps() soc: samsung: chipid: Drop "syscon" compatible requirement soc: samsung: Add Exynos Adaptive Supply Voltage driver PM / OPP: Support adjusting OPP voltages at runtime soc: samsung: chipid: Make exynos_chipid_early_init() static

Olof Johansson committed 7 years ago

Commit 171cfee2 parents b4067b1 89e551e9 files · +889 −2Browse files

Unified · Split

9 files

drivers/opp/core.c +69 −0
drivers/soc/samsung/Kconfig +10 −0
drivers/soc/samsung/Makefile +3 −0
drivers/soc/samsung/exynos-asv.c +177 −0
drivers/soc/samsung/exynos-asv.h +71 −0
drivers/soc/samsung/exynos-chipid.c +10 −2
drivers/soc/samsung/exynos5422-asv.c +505 −0
drivers/soc/samsung/exynos5422-asv.h +31 −0
include/linux/pm_opp.h +13 −0

drivers/opp/core.c+69−0

@@ -2112,6 +2112,75 @@ put_table: · 2111 unmodified lines
2112	return r;	2112	return r;
2113	}	2113	}
2114		2114
		2115	/**
		2116	* dev_pm_opp_adjust_voltage() - helper to change the voltage of an OPP
		2117	* @dev: device for which we do this operation
		2118	* @freq: OPP frequency to adjust voltage of
		2119	* @u_volt: new OPP target voltage
		2120	* @u_volt_min: new OPP min voltage
		2121	* @u_volt_max: new OPP max voltage
		2122	*
		2123	* Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
		2124	* copy operation, returns 0 if no modifcation was done OR modification was
		2125	* successful.
		2126	*/
		2127	int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
		2128	unsigned long u_volt, unsigned long u_volt_min,
		2129	unsigned long u_volt_max)
		2130
		2131	{
		2132	struct opp_table *opp_table;
		2133	struct dev_pm_opp tmp_opp, opp = ERR_PTR(-ENODEV);
		2134	int r = 0;
		2135
		2136	/* Find the opp_table */
		2137	opp_table = _find_opp_table(dev);
		2138	if (IS_ERR(opp_table)) {
		2139	r = PTR_ERR(opp_table);
		2140	dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r);
		2141	return r;
		2142	}
		2143
		2144	mutex_lock(&opp_table->lock);
		2145
		2146	/* Do we have the frequency? */
		2147	list_for_each_entry(tmp_opp, &opp_table->opp_list, node) {
		2148	if (tmp_opp->rate == freq) {
		2149	opp = tmp_opp;
		2150	break;
		2151	}
		2152	}
		2153
		2154	if (IS_ERR(opp)) {
		2155	r = PTR_ERR(opp);
		2156	goto adjust_unlock;
		2157	}
		2158
		2159	/* Is update really needed? */
		2160	if (opp->supplies->u_volt == u_volt)
		2161	goto adjust_unlock;
		2162
		2163	opp->supplies->u_volt = u_volt;
		2164	opp->supplies->u_volt_min = u_volt_min;
		2165	opp->supplies->u_volt_max = u_volt_max;
		2166
		2167	dev_pm_opp_get(opp);
		2168	mutex_unlock(&opp_table->lock);
		2169
		2170	/* Notify the voltage change of the OPP */
		2171	blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADJUST_VOLTAGE,
		2172	opp);
		2173
		2174	dev_pm_opp_put(opp);
		2175	goto adjust_put_table;
		2176
		2177	adjust_unlock:
		2178	mutex_unlock(&opp_table->lock);
		2179	adjust_put_table:
		2180	dev_pm_opp_put_opp_table(opp_table);
		2181	return r;
		2182	}
		2183
2115	/**	2184	/**
2116	* dev_pm_opp_enable() - Enable a specific OPP	2185	* dev_pm_opp_enable() - Enable a specific OPP
2117	* @dev: device for which we do this operation	2186	* @dev: device for which we do this operation

drivers/soc/samsung/Kconfig+10−0

@@ -7,6 +7,16 @@ menuconfig SOC_SAMSUNG · 6 unmodified lines
7		7
8	if SOC_SAMSUNG	8	if SOC_SAMSUNG
9		9
		10	config EXYNOS_ASV
		11	bool "Exynos Adaptive Supply Voltage support" if COMPILE_TEST
		12	depends on (ARCH_EXYNOS && EXYNOS_CHIPID) \|\| COMPILE_TEST
		13	select EXYNOS_ASV_ARM if ARM && ARCH_EXYNOS
		14
		15	# There is no need to enable these drivers for ARMv8
		16	config EXYNOS_ASV_ARM
		17	bool "Exynos ASV ARMv7-specific driver extensions" if COMPILE_TEST
		18	depends on EXYNOS_ASV
		19
10	config EXYNOS_CHIPID	20	config EXYNOS_CHIPID
11	bool "Exynos Chipid controller driver" if COMPILE_TEST	21	bool "Exynos Chipid controller driver" if COMPILE_TEST
12	depends on ARCH_EXYNOS \|\| COMPILE_TEST	22	depends on ARCH_EXYNOS \|\| COMPILE_TEST

drivers/soc/samsung/Makefile+3−0

@@ -1,5 +1,8 @@
1	# SPDX-License-Identifier: GPL-2.0	1	# SPDX-License-Identifier: GPL-2.0
2		2
		3	obj-$(CONFIG_EXYNOS_ASV) += exynos-asv.o
		4	obj-$(CONFIG_EXYNOS_ASV_ARM) += exynos5422-asv.o
		5
3	obj-$(CONFIG_EXYNOS_CHIPID) += exynos-chipid.o	6	obj-$(CONFIG_EXYNOS_CHIPID) += exynos-chipid.o
4	obj-$(CONFIG_EXYNOS_PMU) += exynos-pmu.o	7	obj-$(CONFIG_EXYNOS_PMU) += exynos-pmu.o
5		8

drivers/soc/samsung/exynos-asv.c+177−0

@@ -0,0 +1,177 @@
	1	// SPDX-License-Identifier: GPL-2.0
	2	/*
	3	* Copyright (c) 2019 Samsung Electronics Co., Ltd.
	4	* http://www.samsung.com/
	5	* Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
	6	*
	7	* Samsung Exynos SoC Adaptive Supply Voltage support
	8	*/
	9
	10	#include <linux/cpu.h>
	11	#include <linux/device.h>
	12	#include <linux/errno.h>
	13	#include <linux/init.h>
	14	#include <linux/mfd/syscon.h>
	15	#include <linux/module.h>
	16	#include <linux/of.h>
	17	#include <linux/of_device.h>
	18	#include <linux/platform_device.h>
	19	#include <linux/pm_opp.h>
	20	#include <linux/regmap.h>
	21	#include <linux/soc/samsung/exynos-chipid.h>
	22
	23	#include "exynos-asv.h"
	24	#include "exynos5422-asv.h"
	25
	26	#define MHZ 1000000U
	27
	28	static int exynos_asv_update_cpu_opps(struct exynos_asv *asv,
	29	struct device *cpu)
	30	{
	31	struct exynos_asv_subsys *subsys = NULL;
	32	struct dev_pm_opp *opp;
	33	unsigned int opp_freq;
	34	int i;
	35
	36	for (i = 0; i < ARRAY_SIZE(asv->subsys); i++) {
	37	if (of_device_is_compatible(cpu->of_node,
	38	asv->subsys[i].cpu_dt_compat)) {
	39	subsys = &asv->subsys[i];
	40	break;
	41	}
	42	}
	43	if (!subsys)
	44	return -EINVAL;
	45
	46	for (i = 0; i < subsys->table.num_rows; i++) {
	47	unsigned int new_volt, volt;
	48	int ret;
	49
	50	opp_freq = exynos_asv_opp_get_frequency(subsys, i);
	51
	52	opp = dev_pm_opp_find_freq_exact(cpu, opp_freq * MHZ, true);
	53	if (IS_ERR(opp)) {
	54	dev_info(asv->dev, "cpu%d opp%d, freq: %u missing\n",
	55	cpu->id, i, opp_freq);
	56
	57	continue;
	58	}
	59
	60	volt = dev_pm_opp_get_voltage(opp);
	61	new_volt = asv->opp_get_voltage(subsys, i, volt);
	62	dev_pm_opp_put(opp);
	63
	64	if (new_volt == volt)
	65	continue;
	66
	67	ret = dev_pm_opp_adjust_voltage(cpu, opp_freq * MHZ,
	68	new_volt, new_volt, new_volt);
	69	if (ret < 0)
	70	dev_err(asv->dev,
	71	"Failed to adjust OPP %u Hz/%u uV for cpu%d\n",
	72	opp_freq, new_volt, cpu->id);
	73	else
	74	dev_dbg(asv->dev,
	75	"Adjusted OPP %u Hz/%u -> %u uV, cpu%d\n",
	76	opp_freq, volt, new_volt, cpu->id);
	77	}
	78
	79	return 0;
	80	}
	81
	82	static int exynos_asv_update_opps(struct exynos_asv *asv)
	83	{
	84	struct opp_table *last_opp_table = NULL;
	85	struct device *cpu;
	86	int ret, cpuid;
	87
	88	for_each_possible_cpu(cpuid) {
	89	struct opp_table *opp_table;
	90
	91	cpu = get_cpu_device(cpuid);
	92	if (!cpu)
	93	continue;
	94
	95	opp_table = dev_pm_opp_get_opp_table(cpu);
	96	if (IS_ERR_OR_NULL(opp_table))
	97	continue;
	98
	99	if (!last_opp_table \|\| opp_table != last_opp_table) {
	100	last_opp_table = opp_table;
	101
	102	ret = exynos_asv_update_cpu_opps(asv, cpu);
	103	if (ret < 0)
	104	dev_err(asv->dev, "Couldn't udate OPPs for cpu%d\n",
	105	cpuid);
	106	}
	107
	108	dev_pm_opp_put_opp_table(opp_table);
	109	}
	110
	111	return 0;
	112	}
	113
	114	static int exynos_asv_probe(struct platform_device *pdev)
	115	{
	116	int (probe_func)(struct exynos_asv asv);
	117	struct exynos_asv *asv;
	118	struct device *cpu_dev;
	119	u32 product_id = 0;
	120	int ret, i;
	121
	122	cpu_dev = get_cpu_device(0);
	123	ret = dev_pm_opp_get_opp_count(cpu_dev);
	124	if (ret < 0)
	125	return -EPROBE_DEFER;
	126
	127	asv = devm_kzalloc(&pdev->dev, sizeof(*asv), GFP_KERNEL);
	128	if (!asv)
	129	return -ENOMEM;
	130
	131	asv->chipid_regmap = device_node_to_regmap(pdev->dev.of_node);
	132	if (IS_ERR(asv->chipid_regmap)) {
	133	dev_err(&pdev->dev, "Could not find syscon regmap\n");
	134	return PTR_ERR(asv->chipid_regmap);
	135	}
	136
	137	regmap_read(asv->chipid_regmap, EXYNOS_CHIPID_REG_PRO_ID, &product_id);
	138
	139	switch (product_id & EXYNOS_MASK) {
	140	case 0xE5422000:
	141	probe_func = exynos5422_asv_init;
	142	break;
	143	default:
	144	return -ENODEV;
	145	}
	146
	147	ret = of_property_read_u32(pdev->dev.of_node, "samsung,asv-bin",
	148	&asv->of_bin);
	149	if (ret < 0)
	150	asv->of_bin = -EINVAL;
	151
	152	asv->dev = &pdev->dev;
	153	dev_set_drvdata(&pdev->dev, asv);
	154
	155	for (i = 0; i < ARRAY_SIZE(asv->subsys); i++)
	156	asv->subsys[i].asv = asv;
	157
	158	ret = probe_func(asv);
	159	if (ret < 0)
	160	return ret;
	161
	162	return exynos_asv_update_opps(asv);
	163	}
	164
	165	static const struct of_device_id exynos_asv_of_device_ids[] = {
	166	{ .compatible = "samsung,exynos4210-chipid" },
	167	{}
	168	};
	169
	170	static struct platform_driver exynos_asv_driver = {
	171	.driver = {
	172	.name = "exynos-asv",
	173	.of_match_table = exynos_asv_of_device_ids,
	174	},
	175	.probe = exynos_asv_probe,
	176	};
	177	module_platform_driver(exynos_asv_driver);

drivers/soc/samsung/exynos-asv.h+71−0

@@ -0,0 +1,71 @@
	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	/*
	3	* Copyright (c) 2019 Samsung Electronics Co., Ltd.
	4	* http://www.samsung.com/
	5	* Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
	6	*
	7	* Samsung Exynos SoC Adaptive Supply Voltage support
	8	*/
	9	#ifndef __LINUX_SOC_EXYNOS_ASV_H
	10	#define __LINUX_SOC_EXYNOS_ASV_H
	11
	12	struct regmap;
	13
	14	/* HPM, IDS values to select target group */
	15	struct asv_limit_entry {
	16	unsigned int hpm;
	17	unsigned int ids;
	18	};
	19
	20	struct exynos_asv_table {
	21	unsigned int num_rows;
	22	unsigned int num_cols;
	23	u32 *buf;
	24	};
	25
	26	struct exynos_asv_subsys {
	27	struct exynos_asv *asv;
	28	const char *cpu_dt_compat;
	29	int id;
	30	struct exynos_asv_table table;
	31
	32	unsigned int base_volt;
	33	unsigned int offset_volt_h;
	34	unsigned int offset_volt_l;
	35	};
	36
	37	struct exynos_asv {
	38	struct device *dev;
	39	struct regmap *chipid_regmap;
	40	struct exynos_asv_subsys subsys[2];
	41
	42	int (opp_get_voltage)(const struct exynos_asv_subsys subs,
	43	int level, unsigned int voltage);
	44	unsigned int group;
	45	unsigned int table;
	46
	47	/* True if SG fields from PKG_ID register should be used */
	48	bool use_sg;
	49	/* ASV bin read from DT */
	50	int of_bin;
	51	};
	52
	53	static inline u32 __asv_get_table_entry(const struct exynos_asv_table *table,
	54	unsigned int row, unsigned int col)
	55	{
	56	return table->buf[row * (table->num_cols) + col];
	57	}
	58
	59	static inline u32 exynos_asv_opp_get_voltage(const struct exynos_asv_subsys *subsys,
	60	unsigned int level, unsigned int group)
	61	{
	62	return __asv_get_table_entry(&subsys->table, level, group + 1);
	63	}
	64
	65	static inline u32 exynos_asv_opp_get_frequency(const struct exynos_asv_subsys *subsys,
	66	unsigned int level)
	67	{
	68	return __asv_get_table_entry(&subsys->table, level, 0);
	69	}
	70
	71	#endif /* __LINUX_SOC_EXYNOS_ASV_H */

drivers/soc/samsung/exynos-chipid.c+10−2

 	return NULL;
 }
-int __init exynos_chipid_early_init(void)
+static int __init exynos_chipid_early_init(void)
 {
 	struct soc_device_attribute *soc_dev_attr;
 	struct soc_device *soc_dev;
 	struct device_node *root;
+	struct device_node *syscon;
 	struct regmap *regmap;
 	u32 product_id;
 	u32 revision;
 	int ret;
-	regmap = syscon_regmap_lookup_by_compatible("samsung,exynos4210-chipid");
+	syscon = of_find_compatible_node(NULL, NULL,
+					 "samsung,exynos4210-chipid");
+	if (!syscon)
+		return ENODEV;
+	regmap = device_node_to_regmap(syscon);
+	of_node_put(syscon);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);

drivers/soc/samsung/exynos5422-asv.c+505−0

@@ -0,0 +1,505 @@
	1	// SPDX-License-Identifier: GPL-2.0
	2	/*
	3	* Copyright (c) 2019 Samsung Electronics Co., Ltd.
	4	* http://www.samsung.com/
	5	*
	6	* Samsung Exynos 5422 SoC Adaptive Supply Voltage support
	7	*/
	8
	9	#include <linux/bitrev.h>
	10	#include <linux/errno.h>
	11	#include <linux/regmap.h>
	12	#include <linux/soc/samsung/exynos-chipid.h>
	13	#include <linux/slab.h>
	14
	15	#include "exynos-asv.h"
	16	#include "exynos5422-asv.h"
	17
	18	#define ASV_GROUPS_NUM 14
	19	#define ASV_ARM_DVFS_NUM 20
	20	#define ASV_ARM_BIN2_DVFS_NUM 17
	21	#define ASV_KFC_DVFS_NUM 14
	22	#define ASV_KFC_BIN2_DVFS_NUM 12
	23
	24	/*
	25	* This array is a set of 4 ASV data tables, first column of each ASV table
	26	* contains frequency value in MHz and subsequent columns contain the CPU
	27	* cluster's supply voltage values in uV.
	28	* In order to create a set of OPPs for specific SoC revision one of the voltage
	29	* columns (1...14) from one of the tables (0...3) is selected during
	30	* initialization. There are separate ASV tables for the big (ARM) and little
	31	* (KFC) CPU cluster. Only OPPs which are already defined in devicetree
	32	* will be updated.
	33	*/
	34
	35	static const u32 asv_arm_table[][ASV_ARM_DVFS_NUM][ASV_GROUPS_NUM + 1] = {
	36	{
	37	/* ARM 0, 1 */
	38	{ 2100, 1362500, 1362500, 1350000, 1337500, 1325000, 1312500, 1300000,
	39	1275000, 1262500, 1250000, 1237500, 1225000, 1212500, 1200000 },
	40	{ 2000, 1312500, 1312500, 1300000, 1287500, 1275000, 1262500, 1250000,
	41	1237500, 1225000, 1237500, 1225000, 1212500, 1200000, 1187500 },
	42	{ 1900, 1250000, 1237500, 1225000, 1212500, 1200000, 1187500, 1175000,
	43	1162500, 1150000, 1162500, 1150000, 1137500, 1125000, 1112500 },
	44	{ 1800, 1200000, 1187500, 1175000, 1162500, 1150000, 1137500, 1125000,
	45	1112500, 1100000, 1112500, 1100000, 1087500, 1075000, 1062500 },
	46	{ 1700, 1162500, 1150000, 1137500, 1125000, 1112500, 1100000, 1087500,
	47	1075000, 1062500, 1075000, 1062500, 1050000, 1037500, 1025000 },
	48	{ 1600, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500, 1050000,
	49	1037500, 1025000, 1037500, 1025000, 1012500, 1000000, 987500 },
	50	{ 1500, 1087500, 1075000, 1062500, 1050000, 1037500, 1025000, 1012500,
	51	1000000, 987500, 1000000, 987500, 975000, 962500, 950000 },
	52	{ 1400, 1062500, 1050000, 1037500, 1025000, 1012500, 1000000, 987500,
	53	975000, 962500, 975000, 962500, 950000, 937500, 925000 },
	54	{ 1300, 1050000, 1037500, 1025000, 1012500, 1000000, 987500, 975000,
	55	962500, 950000, 962500, 950000, 937500, 925000, 912500 },
	56	{ 1200, 1025000, 1012500, 1000000, 987500, 975000, 962500, 950000,
	57	937500, 925000, 937500, 925000, 912500, 900000, 900000 },
	58	{ 1100, 1000000, 987500, 975000, 962500, 950000, 937500, 925000,
	59	912500, 900000, 900000, 900000, 900000, 900000, 900000 },
	60	{ 1000, 975000, 962500, 950000, 937500, 925000, 912500, 900000,
	61	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	62	{ 900, 950000, 937500, 925000, 912500, 900000, 900000, 900000,
	63	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	64	{ 800, 925000, 912500, 900000, 900000, 900000, 900000, 900000,
	65	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	66	{ 700, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	67	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	68	{ 600, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	69	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	70	{ 500, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	71	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	72	{ 400, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	73	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	74	{ 300, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	75	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	76	{ 200, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	77	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	78	}, {
	79	/* ARM 2 */
	80	{ 2100, 1362500, 1362500, 1350000, 1337500, 1325000, 1312500, 1300000,
	81	1275000, 1262500, 1250000, 1237500, 1225000, 1212500, 1200000 },
	82	{ 2000, 1312500, 1312500, 1312500, 1300000, 1275000, 1262500, 1250000,
	83	1237500, 1225000, 1237500, 1225000, 1212500, 1200000, 1187500 },
	84	{ 1900, 1262500, 1250000, 1250000, 1237500, 1212500, 1200000, 1187500,
	85	1175000, 1162500, 1175000, 1162500, 1150000, 1137500, 1125000 },
	86	{ 1800, 1212500, 1200000, 1187500, 1175000, 1162500, 1150000, 1137500,
	87	1125000, 1112500, 1125000, 1112500, 1100000, 1087500, 1075000 },
	88	{ 1700, 1175000, 1162500, 1150000, 1137500, 1125000, 1112500, 1100000,
	89	1087500, 1075000, 1087500, 1075000, 1062500, 1050000, 1037500 },
	90	{ 1600, 1137500, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500,
	91	1050000, 1037500, 1050000, 1037500, 1025000, 1012500, 1000000 },
	92	{ 1500, 1100000, 1087500, 1075000, 1062500, 1050000, 1037500, 1025000,
	93	1012500, 1000000, 1012500, 1000000, 987500, 975000, 962500 },
	94	{ 1400, 1075000, 1062500, 1050000, 1037500, 1025000, 1012500, 1000000,
	95	987500, 975000, 987500, 975000, 962500, 950000, 937500 },
	96	{ 1300, 1050000, 1037500, 1025000, 1012500, 1000000, 987500, 975000,
	97	962500, 950000, 962500, 950000, 937500, 925000, 912500 },
	98	{ 1200, 1025000, 1012500, 1000000, 987500, 975000, 962500, 950000,
	99	937500, 925000, 937500, 925000, 912500, 900000, 900000 },
	100	{ 1100, 1000000, 987500, 975000, 962500, 950000, 937500, 925000,
	101	912500, 900000, 900000, 900000, 900000, 900000, 900000 },
	102	{ 1000, 975000, 962500, 950000, 937500, 925000, 912500, 900000,
	103	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	104	{ 900, 950000, 937500, 925000, 912500, 900000, 900000, 900000,
	105	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	106	{ 800, 925000, 912500, 900000, 900000, 900000, 900000, 900000,
	107	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	108	{ 700, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	109	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	110	{ 600, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	111	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	112	{ 500, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	113	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	114	{ 400, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	115	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	116	{ 300, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	117	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	118	{ 200, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	119	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	120	}, {
	121	/* ARM 3 */
	122	{ 2100, 1362500, 1362500, 1350000, 1337500, 1325000, 1312500, 1300000,
	123	1275000, 1262500, 1250000, 1237500, 1225000, 1212500, 1200000 },
	124	{ 2000, 1312500, 1312500, 1300000, 1287500, 1275000, 1262500, 1250000,
	125	1237500, 1225000, 1237500, 1225000, 1212500, 1200000, 1187500 },
	126	{ 1900, 1262500, 1250000, 1237500, 1225000, 1212500, 1200000, 1187500,
	127	1175000, 1162500, 1175000, 1162500, 1150000, 1137500, 1125000 },
	128	{ 1800, 1212500, 1200000, 1187500, 1175000, 1162500, 1150000, 1137500,
	129	1125000, 1112500, 1125000, 1112500, 1100000, 1087500, 1075000 },
	130	{ 1700, 1175000, 1162500, 1150000, 1137500, 1125000, 1112500, 1100000,
	131	1087500, 1075000, 1087500, 1075000, 1062500, 1050000, 1037500 },
	132	{ 1600, 1137500, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500,
	133	1050000, 1037500, 1050000, 1037500, 1025000, 1012500, 1000000 },
	134	{ 1500, 1100000, 1087500, 1075000, 1062500, 1050000, 1037500, 1025000,
	135	1012500, 1000000, 1012500, 1000000, 987500, 975000, 962500 },
	136	{ 1400, 1075000, 1062500, 1050000, 1037500, 1025000, 1012500, 1000000,
	137	987500, 975000, 987500, 975000, 962500, 950000, 937500 },
	138	{ 1300, 1050000, 1037500, 1025000, 1012500, 1000000, 987500, 975000,
	139	962500, 950000, 962500, 950000, 937500, 925000, 912500 },
	140	{ 1200, 1025000, 1012500, 1000000, 987500, 975000, 962500, 950000,
	141	937500, 925000, 937500, 925000, 912500, 900000, 900000 },
	142	{ 1100, 1000000, 987500, 975000, 962500, 950000, 937500, 925000,
	143	912500, 900000, 900000, 900000, 900000, 900000, 900000 },
	144	{ 1000, 975000, 962500, 950000, 937500, 925000, 912500, 900000,
	145	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	146	{ 900, 950000, 937500, 925000, 912500, 900000, 900000, 900000,
	147	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	148	{ 800, 925000, 912500, 900000, 900000, 900000, 900000, 900000,
	149	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	150	{ 700, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	151	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	152	{ 600, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	153	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	154	{ 500, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	155	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	156	{ 400, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	157	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	158	{ 300, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	159	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	160	{ 200, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	161	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	162	}, {
	163	/* ARM bin 2 */
	164	{ 1800, 1237500, 1225000, 1212500, 1200000, 1187500, 1175000, 1162500,
	165	1150000, 1137500, 1150000, 1137500, 1125000, 1112500, 1100000 },
	166	{ 1700, 1200000, 1187500, 1175000, 1162500, 1150000, 1137500, 1125000,
	167	1112500, 1100000, 1112500, 1100000, 1087500, 1075000, 1062500 },
	168	{ 1600, 1162500, 1150000, 1137500, 1125000, 1112500, 1100000, 1087500,
	169	1075000, 1062500, 1075000, 1062500, 1050000, 1037500, 1025000 },
	170	{ 1500, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500, 1050000,
	171	1037500, 1025000, 1037500, 1025000, 1012500, 1000000, 987500 },
	172	{ 1400, 1100000, 1087500, 1075000, 1062500, 1050000, 1037500, 1025000,
	173	1012500, 1000000, 1012500, 1000000, 987500, 975000, 962500 },
	174	{ 1300, 1087500, 1075000, 1062500, 1050000, 1037500, 1025000, 1012500,
	175	1000000, 987500, 1000000, 987500, 975000, 962500, 950000 },
	176	{ 1200, 1062500, 1050000, 1037500, 1025000, 1012500, 1000000, 987500,
	177	975000, 962500, 975000, 962500, 950000, 937500, 925000 },
	178	{ 1100, 1037500, 1025000, 1012500, 1000000, 987500, 975000, 962500,
	179	950000, 937500, 950000, 937500, 925000, 912500, 900000 },
	180	{ 1000, 1012500, 1000000, 987500, 975000, 962500, 950000, 937500,
	181	925000, 912500, 925000, 912500, 900000, 900000, 900000 },
	182	{ 900, 987500, 975000, 962500, 950000, 937500, 925000, 912500,
	183	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	184	{ 800, 962500, 950000, 937500, 925000, 912500, 900000, 900000,
	185	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	186	{ 700, 937500, 925000, 912500, 900000, 900000, 900000, 900000,
	187	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	188	{ 600, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	189	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	190	{ 500, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	191	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	192	{ 400, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	193	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	194	{ 300, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	195	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	196	{ 200, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	197	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	198	}
	199	};
	200
	201	static const u32 asv_kfc_table[][ASV_KFC_DVFS_NUM][ASV_GROUPS_NUM + 1] = {
	202	{
	203	/* KFC 0, 1 */
	204	{ 1500000, 1300000, 1300000, 1300000, 1287500, 1287500, 1287500, 1275000,
	205	1262500, 1250000, 1237500, 1225000, 1212500, 1200000, 1187500 },
	206	{ 1400000, 1275000, 1262500, 1250000, 1237500, 1225000, 1212500, 1200000,
	207	1187500, 1175000, 1162500, 1150000, 1137500, 1125000, 1112500 },
	208	{ 1300000, 1225000, 1212500, 1200000, 1187500, 1175000, 1162500, 1150000,
	209	1137500, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500 },
	210	{ 1200000, 1175000, 1162500, 1150000, 1137500, 1125000, 1112500, 1100000,
	211	1087500, 1075000, 1062500, 1050000, 1037500, 1025000, 1012500 },
	212	{ 1100000, 1137500, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500,
	213	1050000, 1037500, 1025000, 1012500, 1000000, 987500, 975000 },
	214	{ 1000000, 1100000, 1087500, 1075000, 1062500, 1050000, 1037500, 1025000,
	215	1012500, 1000000, 987500, 975000, 962500, 950000, 937500 },
	216	{ 900000, 1062500, 1050000, 1037500, 1025000, 1012500, 1000000, 987500,
	217	975000, 962500, 950000, 937500, 925000, 912500, 900000 },
	218	{ 800000, 1025000, 1012500, 1000000, 987500, 975000, 962500, 950000,
	219	937500, 925000, 912500, 900000, 900000, 900000, 900000 },
	220	{ 700000, 987500, 975000, 962500, 950000, 937500, 925000, 912500,
	221	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	222	{ 600000, 950000, 937500, 925000, 912500, 900000, 900000, 900000,
	223	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	224	{ 500000, 912500, 900000, 900000, 900000, 900000, 900000, 900000,
	225	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	226	{ 400000, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	227	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	228	{ 300000, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	229	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	230	{ 200000, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	231	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	232	}, {
	233	/* KFC 2 */
	234	{ 1500, 1300000, 1300000, 1300000, 1287500, 1287500, 1287500, 1275000,
	235	1262500, 1250000, 1237500, 1225000, 1212500, 1200000, 1187500 },
	236	{ 1400, 1275000, 1262500, 1250000, 1237500, 1225000, 1212500, 1200000,
	237	1187500, 1175000, 1162500, 1150000, 1137500, 1125000, 1112500 },
	238	{ 1300, 1225000, 1212500, 1200000, 1187500, 1175000, 1162500, 1150000,
	239	1137500, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500 },
	240	{ 1200, 1175000, 1162500, 1150000, 1137500, 1125000, 1112500, 1100000,
	241	1087500, 1075000, 1062500, 1050000, 1037500, 1025000, 1012500 },
	242	{ 1100, 1137500, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500,
	243	1050000, 1037500, 1025000, 1012500, 1000000, 987500, 975000 },
	244	{ 1000, 1100000, 1087500, 1075000, 1062500, 1050000, 1037500, 1025000,
	245	1012500, 1000000, 987500, 975000, 962500, 950000, 937500 },
	246	{ 900, 1062500, 1050000, 1037500, 1025000, 1012500, 1000000, 987500,
	247	975000, 962500, 950000, 937500, 925000, 912500, 900000 },
	248	{ 800, 1025000, 1012500, 1000000, 987500, 975000, 962500, 950000,
	249	937500, 925000, 912500, 900000, 900000, 900000, 900000 },
	250	{ 700, 987500, 975000, 962500, 950000, 937500, 925000, 912500,
	251	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	252	{ 600, 950000, 937500, 925000, 912500, 900000, 900000, 900000,
	253	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	254	{ 500, 912500, 900000, 900000, 900000, 900000, 900000, 900000,
	255	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	256	{ 400, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	257	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	258	{ 300, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	259	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	260	{ 200, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	261	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	262	}, {
	263	/* KFC 3 */
	264	{ 1500, 1300000, 1300000, 1300000, 1287500, 1287500, 1287500, 1275000,
	265	1262500, 1250000, 1237500, 1225000, 1212500, 1200000, 1187500 },
	266	{ 1400, 1275000, 1262500, 1250000, 1237500, 1225000, 1212500, 1200000,
	267	1187500, 1175000, 1162500, 1150000, 1137500, 1125000, 1112500 },
	268	{ 1300, 1225000, 1212500, 1200000, 1187500, 1175000, 1162500, 1150000,
	269	1137500, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500 },
	270	{ 1200, 1175000, 1162500, 1150000, 1137500, 1125000, 1112500, 1100000,
	271	1087500, 1075000, 1062500, 1050000, 1037500, 1025000, 1012500 },
	272	{ 1100, 1137500, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500,
	273	1050000, 1037500, 1025000, 1012500, 1000000, 987500, 975000 },
	274	{ 1000, 1100000, 1087500, 1075000, 1062500, 1050000, 1037500, 1025000,
	275	1012500, 1000000, 987500, 975000, 962500, 950000, 937500 },
	276	{ 900, 1062500, 1050000, 1037500, 1025000, 1012500, 1000000, 987500,
	277	975000, 962500, 950000, 937500, 925000, 912500, 900000 },
	278	{ 800, 1025000, 1012500, 1000000, 987500, 975000, 962500, 950000,
	279	937500, 925000, 912500, 900000, 900000, 900000, 900000 },
	280	{ 700, 987500, 975000, 962500, 950000, 937500, 925000, 912500,
	281	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	282	{ 600, 950000, 937500, 925000, 912500, 900000, 900000, 900000,
	283	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	284	{ 500, 912500, 900000, 900000, 900000, 900000, 900000, 900000,
	285	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	286	{ 400, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	287	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	288	{ 300, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	289	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	290	{ 200, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	291	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	292	}, {
	293	/* KFC bin 2 */
	294	{ 1300, 1250000, 1237500, 1225000, 1212500, 1200000, 1187500, 1175000,
	295	1162500, 1150000, 1137500, 1125000, 1112500, 1100000, 1087500 },
	296	{ 1200, 1200000, 1187500, 1175000, 1162500, 1150000, 1137500, 1125000,
	297	1112500, 1100000, 1087500, 1075000, 1062500, 1050000, 1037500 },
	298	{ 1100, 1162500, 1150000, 1137500, 1125000, 1112500, 1100000, 1087500,
	299	1075000, 1062500, 1050000, 1037500, 1025000, 1012500, 1000000 },
	300	{ 1000, 1125000, 1112500, 1100000, 1087500, 1075000, 1062500, 1050000,
	301	1037500, 1025000, 1012500, 1000000, 987500, 975000, 962500 },
	302	{ 900, 1087500, 1075000, 1062500, 1050000, 1037500, 1025000, 1012500,
	303	1000000, 987500, 975000, 962500, 950000, 937500, 925000 },
	304	{ 800, 1050000, 1037500, 1025000, 1012500, 1000000, 987500, 975000,
	305	962500, 950000, 937500, 925000, 912500, 900000, 900000 },
	306	{ 700, 1012500, 1000000, 987500, 975000, 962500, 950000, 937500,
	307	925000, 912500, 900000, 900000, 900000, 900000, 900000 },
	308	{ 600, 975000, 962500, 950000, 937500, 925000, 912500, 900000,
	309	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	310	{ 500, 937500, 925000, 912500, 900000, 900000, 900000, 900000,
	311	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	312	{ 400, 925000, 912500, 900000, 900000, 900000, 900000, 900000,
	313	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	314	{ 300, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	315	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	316	{ 200, 900000, 900000, 900000, 900000, 900000, 900000, 900000,
	317	900000, 900000, 900000, 900000, 900000, 900000, 900000 },
	318	}
	319	};
	320
	321	static const struct asv_limit_entry __asv_limits[ASV_GROUPS_NUM] = {
	322	{ 13, 55 },
	323	{ 21, 65 },
	324	{ 25, 69 },
	325	{ 30, 72 },
	326	{ 36, 74 },
	327	{ 43, 76 },
	328	{ 51, 78 },
	329	{ 65, 80 },
	330	{ 81, 82 },
	331	{ 98, 84 },
	332	{ 119, 87 },
	333	{ 135, 89 },
	334	{ 150, 92 },
	335	{ 999, 999 },
	336	};
	337
	338	static int exynos5422_asv_get_group(struct exynos_asv *asv)
	339	{
	340	unsigned int pkgid_reg, auxi_reg;
	341	int hpm, ids, i;
	342
	343	regmap_read(asv->chipid_regmap, EXYNOS_CHIPID_REG_PKG_ID, &pkgid_reg);
	344	regmap_read(asv->chipid_regmap, EXYNOS_CHIPID_REG_AUX_INFO, &auxi_reg);
	345
	346	if (asv->use_sg) {
	347	u32 sga = (pkgid_reg >> EXYNOS5422_SG_A_OFFSET) &
	348	EXYNOS5422_SG_A_MASK;
	349
	350	u32 sgb = (pkgid_reg >> EXYNOS5422_SG_B_OFFSET) &
	351	EXYNOS5422_SG_B_MASK;
	352
	353	if ((pkgid_reg >> EXYNOS5422_SG_BSIGN_OFFSET) &
	354	EXYNOS5422_SG_BSIGN_MASK)
	355	return sga + sgb;
	356	else
	357	return sga - sgb;
	358	}
	359
	360	hpm = (auxi_reg >> EXYNOS5422_TMCB_OFFSET) & EXYNOS5422_TMCB_MASK;
	361	ids = (pkgid_reg >> EXYNOS5422_IDS_OFFSET) & EXYNOS5422_IDS_MASK;
	362
	363	for (i = 0; i < ASV_GROUPS_NUM; i++) {
	364	if (ids <= __asv_limits[i].ids)
	365	break;
	366	if (hpm <= __asv_limits[i].hpm)
	367	break;
	368	}
	369	if (i < ASV_GROUPS_NUM)
	370	return i;
	371
	372	return 0;
	373	}
	374
	375	static int __asv_offset_voltage(unsigned int index)
	376	{
	377	switch (index) {
	378	case 1:
	379	return 12500;
	380	case 2:
	381	return 50000;
	382	case 3:
	383	return 25000;
	384	default:
	385	return 0;
	386	};
	387	}
	388
	389	static void exynos5422_asv_offset_voltage_setup(struct exynos_asv *asv)
	390	{
	391	struct exynos_asv_subsys *subsys;
	392	unsigned int reg, value;
	393
	394	regmap_read(asv->chipid_regmap, EXYNOS_CHIPID_REG_AUX_INFO, &reg);
	395
	396	/* ARM offset voltage setup */
	397	subsys = &asv->subsys[EXYNOS_ASV_SUBSYS_ID_ARM];
	398
	399	subsys->base_volt = 1000000;
	400
	401	value = (reg >> EXYNOS5422_ARM_UP_OFFSET) & EXYNOS5422_ARM_UP_MASK;
	402	subsys->offset_volt_h = __asv_offset_voltage(value);
	403
	404	value = (reg >> EXYNOS5422_ARM_DN_OFFSET) & EXYNOS5422_ARM_DN_MASK;
	405	subsys->offset_volt_l = __asv_offset_voltage(value);
	406
	407	/* KFC offset voltage setup */
	408	subsys = &asv->subsys[EXYNOS_ASV_SUBSYS_ID_KFC];
	409
	410	subsys->base_volt = 1000000;
	411
	412	value = (reg >> EXYNOS5422_KFC_UP_OFFSET) & EXYNOS5422_KFC_UP_MASK;
	413	subsys->offset_volt_h = __asv_offset_voltage(value);
	414
	415	value = (reg >> EXYNOS5422_KFC_DN_OFFSET) & EXYNOS5422_KFC_DN_MASK;
	416	subsys->offset_volt_l = __asv_offset_voltage(value);
	417	}
	418
	419	static int exynos5422_asv_opp_get_voltage(const struct exynos_asv_subsys *subsys,
	420	int level, unsigned int volt)
	421	{
	422	unsigned int asv_volt;
	423
	424	if (level >= subsys->table.num_rows)
	425	return volt;
	426
	427	asv_volt = exynos_asv_opp_get_voltage(subsys, level,
	428	subsys->asv->group);
	429
	430	if (volt > subsys->base_volt)
	431	asv_volt += subsys->offset_volt_h;
	432	else
	433	asv_volt += subsys->offset_volt_l;
	434
	435	return asv_volt;
	436	}
	437
	438	static unsigned int exynos5422_asv_parse_table(unsigned int pkg_id)
	439	{
	440	return (pkg_id >> EXYNOS5422_TABLE_OFFSET) & EXYNOS5422_TABLE_MASK;
	441	}
	442
	443	static bool exynos5422_asv_parse_bin2(unsigned int pkg_id)
	444	{
	445	return (pkg_id >> EXYNOS5422_BIN2_OFFSET) & EXYNOS5422_BIN2_MASK;
	446	}
	447
	448	static bool exynos5422_asv_parse_sg(unsigned int pkg_id)
	449	{
	450	return (pkg_id >> EXYNOS5422_USESG_OFFSET) & EXYNOS5422_USESG_MASK;
	451	}
	452
	453	int exynos5422_asv_init(struct exynos_asv *asv)
	454	{
	455	struct exynos_asv_subsys *subsys;
	456	unsigned int table_index;
	457	unsigned int pkg_id;
	458	bool bin2;
	459
	460	regmap_read(asv->chipid_regmap, EXYNOS_CHIPID_REG_PKG_ID, &pkg_id);
	461
	462	if (asv->of_bin == 2) {
	463	bin2 = true;
	464	asv->use_sg = false;
	465	} else {
	466	asv->use_sg = exynos5422_asv_parse_sg(pkg_id);
	467	bin2 = exynos5422_asv_parse_bin2(pkg_id);
	468	}
	469
	470	asv->group = exynos5422_asv_get_group(asv);
	471	asv->table = exynos5422_asv_parse_table(pkg_id);
	472
	473	exynos5422_asv_offset_voltage_setup(asv);
	474
	475	if (bin2) {
	476	table_index = 3;
	477	} else {
	478	if (asv->table == 2 \|\| asv->table == 3)
	479	table_index = asv->table - 1;
	480	else
	481	table_index = 0;
	482	}
	483
	484	subsys = &asv->subsys[EXYNOS_ASV_SUBSYS_ID_ARM];
	485	subsys->cpu_dt_compat = "arm,cortex-a15";
	486	if (bin2)
	487	subsys->table.num_rows = ASV_ARM_BIN2_DVFS_NUM;
	488	else
	489	subsys->table.num_rows = ASV_ARM_DVFS_NUM;
	490	subsys->table.num_cols = ASV_GROUPS_NUM + 1;
	491	subsys->table.buf = (u32 *)asv_arm_table[table_index];
	492
	493	subsys = &asv->subsys[EXYNOS_ASV_SUBSYS_ID_KFC];
	494	subsys->cpu_dt_compat = "arm,cortex-a7";
	495	if (bin2)
	496	subsys->table.num_rows = ASV_KFC_BIN2_DVFS_NUM;
	497	else
	498	subsys->table.num_rows = ASV_KFC_DVFS_NUM;
	499	subsys->table.num_cols = ASV_GROUPS_NUM + 1;
	500	subsys->table.buf = (u32 *)asv_kfc_table[table_index];
	501
	502	asv->opp_get_voltage = exynos5422_asv_opp_get_voltage;
	503
	504	return 0;
	505	}

drivers/soc/samsung/exynos5422-asv.h+31−0

@@ -0,0 +1,31 @@
	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	/*
	3	* Copyright (c) 2019 Samsung Electronics Co., Ltd.
	4	* http://www.samsung.com/
	5	*
	6	* Samsung Exynos 5422 SoC Adaptive Supply Voltage support
	7	*/
	8
	9	#ifndef __LINUX_SOC_EXYNOS5422_ASV_H
	10	#define __LINUX_SOC_EXYNOS5422_ASV_H
	11
	12	#include <linux/errno.h>
	13
	14	enum {
	15	EXYNOS_ASV_SUBSYS_ID_ARM,
	16	EXYNOS_ASV_SUBSYS_ID_KFC,
	17	EXYNOS_ASV_SUBSYS_ID_MAX
	18	};
	19
	20	struct exynos_asv;
	21
	22	#ifdef CONFIG_EXYNOS_ASV_ARM
	23	int exynos5422_asv_init(struct exynos_asv *asv);
	24	#else
	25	static inline int exynos5422_asv_init(struct exynos_asv *asv)
	26	{
	27	return -ENOTSUPP;
	28	}
	29	#endif
	30
	31	#endif /* __LINUX_SOC_EXYNOS5422_ASV_H */

include/linux/pm_opp.h+13−0

 enum dev_pm_opp_event {
 	OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
+	OPP_EVENT_ADJUST_VOLTAGE,
 };
 /**
 void dev_pm_opp_remove(struct device *dev, unsigned long freq);
 void dev_pm_opp_remove_all_dynamic(struct device *dev);
+int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
+			      unsigned long u_volt, unsigned long u_volt_min,
+			      unsigned long u_volt_max);
 int dev_pm_opp_enable(struct device *dev, unsigned long freq);
 int dev_pm_opp_disable(struct device *dev, unsigned long freq);
 {
 }
+static inline int
+dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
+			  unsigned long u_volt, unsigned long u_volt_min,
+			  unsigned long u_volt_max)
+{
+	return 0;
+}
 static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
 {
 	return 0;

Merge tag 'samsung-drivers-5.5' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/drivers

Keyboard shortcuts

General

Issues and pull requests

Issues, pull requests and Inbox

Repository code