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Merge branch 'for_3.6/pm/sr-move' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into devel-driver

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This commit is contained in:
Tony Lindgren 2012-06-26 06:55:23 -07:00
commit 9e74f218ab
15 changed files with 235 additions and 179 deletions
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5
arch/arm/mach-omap2/Makefile
View File

@ -70,8 +70,9 @@ obj-$(CONFIG_ARCH_OMAP3) += cpuidle34xx.o
obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o omap-mpuss-lowpower.o
obj-$(CONFIG_ARCH_OMAP4) += cpuidle44xx.o
obj-$(CONFIG_PM_DEBUG) += pm-debug.o
obj-$(CONFIG_OMAP_SMARTREFLEX) += sr_device.o smartreflex.o
obj-$(CONFIG_OMAP_SMARTREFLEX_CLASS3) += smartreflex-class3.o
obj-$(CONFIG_POWER_AVS_OMAP) += sr_device.o
obj-$(CONFIG_POWER_AVS_OMAP_CLASS3) += smartreflex-class3.o
AFLAGS_sleep24xx.o :=-Wa,-march=armv6
AFLAGS_sleep34xx.o :=-Wa,-march=armv7-a$(plus_sec)

12
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
View File

@ -14,6 +14,8 @@
*
* XXX these should be marked initdata for multi-OMAP kernels
*/
#include <linux/power/smartreflex.h>
#include <plat/omap_hwmod.h>
#include <mach/irqs.h>
#include <plat/cpu.h>
@ -29,8 +31,6 @@
#include <plat/dmtimer.h>
#include "omap_hwmod_common_data.h"
#include "smartreflex.h"
#include "prm-regbits-34xx.h"
#include "cm-regbits-34xx.h"
#include "wd_timer.h"
@ -1325,7 +1325,7 @@ static struct omap_hwmod_irq_info omap3_smartreflex_mpu_irqs[] = {
};
static struct omap_hwmod omap34xx_sr1_hwmod = {
.name = "sr1",
.name = "smartreflex_mpu_iva",
.class = &omap34xx_smartreflex_hwmod_class,
.main_clk = "sr1_fck",
.prcm = {
@ -1343,7 +1343,7 @@ static struct omap_hwmod omap34xx_sr1_hwmod = {
};
static struct omap_hwmod omap36xx_sr1_hwmod = {
.name = "sr1",
.name = "smartreflex_mpu_iva",
.class = &omap36xx_smartreflex_hwmod_class,
.main_clk = "sr1_fck",
.prcm = {
@ -1370,7 +1370,7 @@ static struct omap_hwmod_irq_info omap3_smartreflex_core_irqs[] = {
};
static struct omap_hwmod omap34xx_sr2_hwmod = {
.name = "sr2",
.name = "smartreflex_core",
.class = &omap34xx_smartreflex_hwmod_class,
.main_clk = "sr2_fck",
.prcm = {
@ -1388,7 +1388,7 @@ static struct omap_hwmod omap34xx_sr2_hwmod = {
};
static struct omap_hwmod omap36xx_sr2_hwmod = {
.name = "sr2",
.name = "smartreflex_core",
.class = &omap36xx_smartreflex_hwmod_class,
.main_clk = "sr2_fck",
.prcm = {

3
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
View File

@ -19,6 +19,7 @@
*/
#include <linux/io.h>
#include <linux/power/smartreflex.h>
#include <plat/omap_hwmod.h>
#include <plat/cpu.h>
@ -32,8 +33,6 @@
#include <plat/common.h>
#include "omap_hwmod_common_data.h"
#include "smartreflex.h"
#include "cm1_44xx.h"
#include "cm2_44xx.h"
#include "prm44xx.h"

2
arch/arm/mach-omap2/pm.h
View File

@ -88,7 +88,7 @@ extern void enable_omap3630_toggle_l2_on_restore(void);
static inline void enable_omap3630_toggle_l2_on_restore(void) { }
#endif /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */
#ifdef CONFIG_OMAP_SMARTREFLEX
#ifdef CONFIG_POWER_AVS_OMAP
extern int omap_devinit_smartreflex(void);
extern void omap_enable_smartreflex_on_init(void);
#else

29
arch/arm/mach-omap2/smartreflex-class3.c
View File

@ -11,36 +11,37 @@
* published by the Free Software Foundation.
*/
#include "smartreflex.h"
#include <linux/power/smartreflex.h>
#include "voltage.h"
static int sr_class3_enable(struct voltagedomain *voltdm)
static int sr_class3_enable(struct omap_sr *sr)
{
unsigned long volt = voltdm_get_voltage(voltdm);
unsigned long volt = voltdm_get_voltage(sr->voltdm);
if (!volt) {
pr_warning("%s: Curr voltage unknown. Cannot enable sr_%s\n",
__func__, voltdm->name);
pr_warning("%s: Curr voltage unknown. Cannot enable %s\n",
__func__, sr->name);
return -ENODATA;
}
omap_vp_enable(voltdm);
return sr_enable(voltdm, volt);
omap_vp_enable(sr->voltdm);
return sr_enable(sr->voltdm, volt);
}
static int sr_class3_disable(struct voltagedomain *voltdm, int is_volt_reset)
static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
{
sr_disable_errgen(voltdm);
omap_vp_disable(voltdm);
sr_disable(voltdm);
sr_disable_errgen(sr->voltdm);
omap_vp_disable(sr->voltdm);
sr_disable(sr->voltdm);
if (is_volt_reset)
voltdm_reset(voltdm);
voltdm_reset(sr->voltdm);
return 0;
}
static int sr_class3_configure(struct voltagedomain *voltdm)
static int sr_class3_configure(struct omap_sr *sr)
{
return sr_configure_errgen(voltdm);
return sr_configure_errgen(sr->voltdm);
}
/* SR class3 structure */

39
arch/arm/mach-omap2/sr_device.c
View File

@ -17,6 +17,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/power/smartreflex.h>
#include <linux/err.h>
#include <linux/slab.h>
@ -24,7 +25,6 @@
#include <plat/omap_device.h>
#include "smartreflex.h"
#include "voltage.h"
#include "control.h"
#include "pm.h"
@ -36,7 +36,10 @@ static void __init sr_set_nvalues(struct omap_volt_data *volt_data,
struct omap_sr_data *sr_data)
{
struct omap_sr_nvalue_table *nvalue_table;
int i, count = 0;
int i, j, count = 0;
sr_data->nvalue_count = 0;
sr_data->nvalue_table = NULL;
while (volt_data[count].volt_nominal)
count++;
@ -44,8 +47,14 @@ static void __init sr_set_nvalues(struct omap_volt_data *volt_data,
nvalue_table = kzalloc(sizeof(struct omap_sr_nvalue_table)*count,
GFP_KERNEL);
for (i = 0; i < count; i++) {
if (!nvalue_table) {
pr_err("OMAP: SmartReflex: cannot allocate memory for n-value table\n");
return;
}
for (i = 0, j = 0; i < count; i++) {
u32 v;
/*
* In OMAP4 the efuse registers are 24 bit aligned.
* A __raw_readl will fail for non-32 bit aligned address
@ -58,15 +67,30 @@ static void __init sr_set_nvalues(struct omap_volt_data *volt_data,
omap_ctrl_readb(offset + 1) << 8 |
omap_ctrl_readb(offset + 2) << 16;
} else {
v = omap_ctrl_readl(volt_data[i].sr_efuse_offs);
v = omap_ctrl_readl(volt_data[i].sr_efuse_offs);
}
nvalue_table[i].efuse_offs = volt_data[i].sr_efuse_offs;
nvalue_table[i].nvalue = v;
/*
* Many OMAP SoCs don't have the eFuse values set.
* For example, pretty much all OMAP3xxx before
* ES3.something.
*
* XXX There needs to be some way for board files or
* userspace to add these in.
*/
if (v == 0)
continue;
nvalue_table[j].nvalue = v;
nvalue_table[j].efuse_offs = volt_data[i].sr_efuse_offs;
nvalue_table[j].errminlimit = volt_data[i].sr_errminlimit;
nvalue_table[j].volt_nominal = volt_data[i].volt_nominal;
j++;
}
sr_data->nvalue_table = nvalue_table;
sr_data->nvalue_count = count;
sr_data->nvalue_count = j;
}
static int __init sr_dev_init(struct omap_hwmod *oh, void *user)
@ -93,6 +117,7 @@ static int __init sr_dev_init(struct omap_hwmod *oh, void *user)
goto exit;
}
sr_data->name = oh->name;
sr_data->ip_type = oh->class->rev;
sr_data->senn_mod = 0x1;
sr_data->senp_mod = 0x1;

21
arch/arm/mach-omap2/voltage.h
View File

@ -16,6 +16,8 @@
#include <linux/err.h>
#include <plat/voltage.h>
#include "vc.h"
#include "vp.h"
@ -90,25 +92,6 @@ struct voltagedomain {
struct omap_volt_data *volt_data;
};
/**
* struct omap_volt_data - Omap voltage specific data.
* @voltage_nominal: The possible voltage value in uV
* @sr_efuse_offs: The offset of the efuse register(from system
* control module base address) from where to read
* the n-target value for the smartreflex module.
* @sr_errminlimit: Error min limit value for smartreflex. This value
* differs at differnet opp and thus is linked
* with voltage.
* @vp_errorgain: Error gain value for the voltage processor. This
* field also differs according to the voltage/opp.
*/
struct omap_volt_data {
u32 volt_nominal;
u32 sr_efuse_offs;
u8 sr_errminlimit;
u8 vp_errgain;
};
/**
* struct omap_voltdm_pmic - PMIC specific data required by voltage driver.
* @slew_rate: PMIC slew rate (in uv/us)

31
arch/arm/plat-omap/Kconfig
View File

@ -45,31 +45,30 @@ config OMAP_DEBUG_LEDS
depends on OMAP_DEBUG_DEVICES
default y if LEDS_CLASS
config OMAP_SMARTREFLEX
bool "SmartReflex support"
depends on (ARCH_OMAP3 || ARCH_OMAP4) && PM
config POWER_AVS_OMAP
bool "AVS(Adaptive Voltage Scaling) support for OMAP IP versions 1&2"
depends on POWER_AVS && (ARCH_OMAP3 || ARCH_OMAP4) && PM
help
Say Y if you want to enable SmartReflex.
SmartReflex can perform continuous dynamic voltage
scaling around the nominal operating point voltage
according to silicon characteristics and operating
conditions. Enabling SmartReflex reduces power
consumption.
Say Y to enable AVS(Adaptive Voltage Scaling)
support on OMAP containing the version 1 or
version 2 of the SmartReflex IP.
V1 is the 65nm version used in OMAP3430.
V2 is the update for the 45nm version of the IP used in OMAP3630
and OMAP4430
Please note, that by default SmartReflex is only
initialized. To enable the automatic voltage
compensation for vdd mpu and vdd core from user space,
initialized and not enabled. To enable the automatic voltage
compensation for vdd mpu and vdd core from user space,
user must write 1 to
/debug/voltage/vdd_<X>/smartreflex/autocomp,
where X is mpu or core for OMAP3.
/debug/smartreflex/sr_<X>/autocomp,
where X is mpu_iva or core for OMAP3.
Optionally autocompensation can be enabled in the kernel
by default during system init via the enable_on_init flag
which an be passed as platform data to the smartreflex driver.
config OMAP_SMARTREFLEX_CLASS3
config POWER_AVS_OMAP_CLASS3
bool "Class 3 mode of Smartreflex Implementation"
depends on OMAP_SMARTREFLEX && TWL4030_CORE
depends on POWER_AVS_OMAP && TWL4030_CORE
help
Say Y to enable Class 3 implementation of Smartreflex

21
arch/arm/plat-omap/include/plat/voltage.h
View File

@ -11,10 +11,29 @@
#ifndef __ARCH_ARM_OMAP_VOLTAGE_H
#define __ARCH_ARM_OMAP_VOLTAGE_H
/**
* struct omap_volt_data - Omap voltage specific data.
* @voltage_nominal: The possible voltage value in uV
* @sr_efuse_offs: The offset of the efuse register(from system
* control module base address) from where to read
* the n-target value for the smartreflex module.
* @sr_errminlimit: Error min limit value for smartreflex. This value
* differs at differnet opp and thus is linked
* with voltage.
* @vp_errorgain: Error gain value for the voltage processor. This
* field also differs according to the voltage/opp.
*/
struct omap_volt_data {
u32 volt_nominal;
u32 sr_efuse_offs;
u8 sr_errminlimit;
u8 vp_errgain;
};
struct voltagedomain;
struct voltagedomain *voltdm_lookup(const char *name);
int voltdm_scale(struct voltagedomain *voltdm, unsigned long target_volt);
unsigned long voltdm_get_voltage(struct voltagedomain *voltdm);
struct omap_volt_data *omap_voltage_get_voltdata(struct voltagedomain *voltdm,
unsigned long volt);
#endif

2
drivers/power/Kconfig
View File

@ -310,3 +310,5 @@ config AB8500_BATTERY_THERM_ON_BATCTRL
Say Y to enable battery temperature measurements using
thermistor connected on BATCTRL ADC.
endif # POWER_SUPPLY
source "drivers/power/avs/Kconfig"

1
drivers/power/Makefile
View File

@ -43,4 +43,5 @@ obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o
obj-$(CONFIG_CHARGER_MANAGER) += charger-manager.o
obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o
obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o
obj-$(CONFIG_POWER_AVS) += avs/
obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o

12
drivers/power/avs/Kconfig Normal file
View File

@ -0,0 +1,12 @@
menuconfig POWER_AVS
tristate "Adaptive Voltage Scaling class support"
help
AVS is a power management technique which finely controls the
operating voltage of a device in order to optimize (i.e. reduce)
its power consumption.
At a given operating point the voltage is adapted depending on
static factors (chip manufacturing process) and dynamic factors
(temperature depending performance).
AVS is also called SmartReflex on OMAP devices.
Say Y here to enable Adaptive Voltage Scaling class support.

1
drivers/power/avs/Makefile Normal file
View File

@ -0,0 +1 @@
obj-$(CONFIG_POWER_AVS_OMAP) += smartreflex.o

161
arch/arm/mach-omap2/smartreflex.c → drivers/power/avs/smartreflex.c
View File

@ -3,7 +3,7 @@
*
* Author: Thara Gopinath <thara@ti.com>
*
* Copyright (C) 2010 Texas Instruments, Inc.
* Copyright (C) 2012 Texas Instruments, Inc.
* Thara Gopinath <thara@ti.com>
*
* Copyright (C) 2008 Nokia Corporation
@ -25,39 +25,12 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include "common.h"
#include "pm.h"
#include "smartreflex.h"
#include <linux/power/smartreflex.h>
#define SMARTREFLEX_NAME_LEN 16
#define NVALUE_NAME_LEN 40
#define SR_DISABLE_TIMEOUT 200
struct omap_sr {
struct list_head node;
struct platform_device *pdev;
struct omap_sr_nvalue_table *nvalue_table;
struct voltagedomain *voltdm;
struct dentry *dbg_dir;
unsigned int irq;
int srid;
int ip_type;
int nvalue_count;
bool autocomp_active;
u32 clk_length;
u32 err_weight;
u32 err_minlimit;
u32 err_maxlimit;
u32 accum_data;
u32 senn_avgweight;
u32 senp_avgweight;
u32 senp_mod;
u32 senn_mod;
void __iomem *base;
};
/* sr_list contains all the instances of smartreflex module */
static LIST_HEAD(sr_list);
@ -148,7 +121,7 @@ static irqreturn_t sr_interrupt(int irq, void *data)
}
if (sr_class->notify)
sr_class->notify(sr_info->voltdm, status);
sr_class->notify(sr_info, status);
return IRQ_HANDLED;
}
@ -207,7 +180,7 @@ static void sr_set_regfields(struct omap_sr *sr)
sr->err_weight = OMAP3430_SR_ERRWEIGHT;
sr->err_maxlimit = OMAP3430_SR_ERRMAXLIMIT;
sr->accum_data = OMAP3430_SR_ACCUMDATA;
if (!(strcmp(sr->voltdm->name, "mpu"))) {
if (!(strcmp(sr->name, "smartreflex_mpu_iva"))) {
sr->senn_avgweight = OMAP3430_SR1_SENNAVGWEIGHT;
sr->senp_avgweight = OMAP3430_SR1_SENPAVGWEIGHT;
} else {
@ -226,7 +199,7 @@ static void sr_start_vddautocomp(struct omap_sr *sr)
return;
}
if (!sr_class->enable(sr->voltdm))
if (!sr_class->enable(sr))
sr->autocomp_active = true;
}
@ -240,7 +213,7 @@ static void sr_stop_vddautocomp(struct omap_sr *sr)
}
if (sr->autocomp_active) {
sr_class->disable(sr->voltdm, 1);
sr_class->disable(sr, 1);
sr->autocomp_active = false;
}
}
@ -258,19 +231,13 @@ static void sr_stop_vddautocomp(struct omap_sr *sr)
*/
static int sr_late_init(struct omap_sr *sr_info)
{
char *name;
struct omap_sr_data *pdata = sr_info->pdev->dev.platform_data;
struct resource *mem;
int ret = 0;
if (sr_class->notify && sr_class->notify_flags && sr_info->irq) {
name = kasprintf(GFP_KERNEL, "sr_%s", sr_info->voltdm->name);
if (name == NULL) {
ret = -ENOMEM;
goto error;
}
ret = request_irq(sr_info->irq, sr_interrupt,
0, name, sr_info);
0, sr_info->name, sr_info);
if (ret)
goto error;
disable_irq(sr_info->irq);
@ -289,7 +256,6 @@ error:
dev_err(&sr_info->pdev->dev, "%s: ERROR in registering"
"interrupt handler. Smartreflex will"
"not function as desired\n", __func__);
kfree(name);
kfree(sr_info);
return ret;
@ -320,9 +286,9 @@ static void sr_v1_disable(struct omap_sr *sr)
* Wait for SR to be disabled.
* wait until ERRCONFIG.MCUDISACKINTST = 1. Typical latency is 1us.
*/
omap_test_timeout((sr_read_reg(sr, ERRCONFIG_V1) &
ERRCONFIG_MCUDISACKINTST), SR_DISABLE_TIMEOUT,
timeout);
sr_test_cond_timeout((sr_read_reg(sr, ERRCONFIG_V1) &
ERRCONFIG_MCUDISACKINTST), SR_DISABLE_TIMEOUT,
timeout);
if (timeout >= SR_DISABLE_TIMEOUT)
dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n",
@ -365,9 +331,9 @@ static void sr_v2_disable(struct omap_sr *sr)
* Wait for SR to be disabled.
* wait until IRQSTATUS.MCUDISACKINTST = 1. Typical latency is 1us.
*/
omap_test_timeout((sr_read_reg(sr, IRQSTATUS) &
IRQSTATUS_MCUDISABLEACKINT), SR_DISABLE_TIMEOUT,
timeout);
sr_test_cond_timeout((sr_read_reg(sr, IRQSTATUS) &
IRQSTATUS_MCUDISABLEACKINT), SR_DISABLE_TIMEOUT,
timeout);
if (timeout >= SR_DISABLE_TIMEOUT)
dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n",
@ -378,22 +344,23 @@ static void sr_v2_disable(struct omap_sr *sr)
sr_write_reg(sr, IRQSTATUS, IRQSTATUS_MCUDISABLEACKINT);
}
static u32 sr_retrieve_nvalue(struct omap_sr *sr, u32 efuse_offs)
static struct omap_sr_nvalue_table *sr_retrieve_nvalue_row(
struct omap_sr *sr, u32 efuse_offs)
{
int i;
if (!sr->nvalue_table) {
dev_warn(&sr->pdev->dev, "%s: Missing ntarget value table\n",
__func__);
return 0;
return NULL;
}
for (i = 0; i < sr->nvalue_count; i++) {
if (sr->nvalue_table[i].efuse_offs == efuse_offs)
return sr->nvalue_table[i].nvalue;
return &sr->nvalue_table[i];
}
return 0;
return NULL;
}
/* Public Functions */
@ -419,8 +386,7 @@ int sr_configure_errgen(struct voltagedomain *voltdm)
struct omap_sr *sr = _sr_lookup(voltdm);
if (IS_ERR(sr)) {
pr_warning("%s: omap_sr struct for sr_%s not found\n",
__func__, voltdm->name);
pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
return PTR_ERR(sr);
}
@ -487,8 +453,7 @@ int sr_disable_errgen(struct voltagedomain *voltdm)
struct omap_sr *sr = _sr_lookup(voltdm);
if (IS_ERR(sr)) {
pr_warning("%s: omap_sr struct for sr_%s not found\n",
__func__, voltdm->name);
pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
return PTR_ERR(sr);
}
@ -538,8 +503,7 @@ int sr_configure_minmax(struct voltagedomain *voltdm)
struct omap_sr *sr = _sr_lookup(voltdm);
if (IS_ERR(sr)) {
pr_warning("%s: omap_sr struct for sr_%s not found\n",
__func__, voltdm->name);
pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
return PTR_ERR(sr);
}
@ -620,12 +584,11 @@ int sr_enable(struct voltagedomain *voltdm, unsigned long volt)
{
struct omap_volt_data *volt_data;
struct omap_sr *sr = _sr_lookup(voltdm);
u32 nvalue_reciprocal;
struct omap_sr_nvalue_table *nvalue_row;
int ret;
if (IS_ERR(sr)) {
pr_warning("%s: omap_sr struct for sr_%s not found\n",
__func__, voltdm->name);
pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
return PTR_ERR(sr);
}
@ -637,16 +600,16 @@ int sr_enable(struct voltagedomain *voltdm, unsigned long volt)
return PTR_ERR(volt_data);
}
nvalue_reciprocal = sr_retrieve_nvalue(sr, volt_data->sr_efuse_offs);
nvalue_row = sr_retrieve_nvalue_row(sr, volt_data->sr_efuse_offs);
if (!nvalue_reciprocal) {
dev_warn(&sr->pdev->dev, "%s: NVALUE = 0 at voltage %ld\n",
__func__, volt);
if (!nvalue_row) {
dev_warn(&sr->pdev->dev, "%s: failure getting SR data for this voltage %ld\n",
__func__, volt);
return -ENODATA;
}
/* errminlimit is opp dependent and hence linked to voltage */
sr->err_minlimit = volt_data->sr_errminlimit;
sr->err_minlimit = nvalue_row->errminlimit;
pm_runtime_get_sync(&sr->pdev->dev);
@ -655,11 +618,11 @@ int sr_enable(struct voltagedomain *voltdm, unsigned long volt)
return 0;
/* Configure SR */
ret = sr_class->configure(voltdm);
ret = sr_class->configure(sr);
if (ret)
return ret;
sr_write_reg(sr, NVALUERECIPROCAL, nvalue_reciprocal);
sr_write_reg(sr, NVALUERECIPROCAL, nvalue_row->nvalue);
/* SRCONFIG - enable SR */
sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, SRCONFIG_SRENABLE);
@ -678,8 +641,7 @@ void sr_disable(struct voltagedomain *voltdm)
struct omap_sr *sr = _sr_lookup(voltdm);
if (IS_ERR(sr)) {
pr_warning("%s: omap_sr struct for sr_%s not found\n",
__func__, voltdm->name);
pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
return;
}
@ -759,8 +721,7 @@ void omap_sr_enable(struct voltagedomain *voltdm)
struct omap_sr *sr = _sr_lookup(voltdm);
if (IS_ERR(sr)) {
pr_warning("%s: omap_sr struct for sr_%s not found\n",
__func__, voltdm->name);
pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
return;
}
@ -773,7 +734,7 @@ void omap_sr_enable(struct voltagedomain *voltdm)
return;
}
sr_class->enable(voltdm);
sr_class->enable(sr);
}
/**
@ -792,8 +753,7 @@ void omap_sr_disable(struct voltagedomain *voltdm)
struct omap_sr *sr = _sr_lookup(voltdm);
if (IS_ERR(sr)) {
pr_warning("%s: omap_sr struct for sr_%s not found\n",
__func__, voltdm->name);
pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
return;
}
@ -806,7 +766,7 @@ void omap_sr_disable(struct voltagedomain *voltdm)
return;
}
sr_class->disable(voltdm, 0);
sr_class->disable(sr, 0);
}
/**
@ -825,8 +785,7 @@ void omap_sr_disable_reset_volt(struct voltagedomain *voltdm)
struct omap_sr *sr = _sr_lookup(voltdm);
if (IS_ERR(sr)) {
pr_warning("%s: omap_sr struct for sr_%s not found\n",
__func__, voltdm->name);
pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
return;
}
@ -839,7 +798,7 @@ void omap_sr_disable_reset_volt(struct voltagedomain *voltdm)
return;
}
sr_class->disable(voltdm, 1);
sr_class->disable(sr, 1);
}
/**
@ -911,9 +870,7 @@ static int __init omap_sr_probe(struct platform_device *pdev)
struct omap_sr_data *pdata = pdev->dev.platform_data;
struct resource *mem, *irq;
struct dentry *nvalue_dir;
struct omap_volt_data *volt_data;
int i, ret = 0;
char *name;
sr_info = kzalloc(sizeof(struct omap_sr), GFP_KERNEL);
if (!sr_info) {
@ -950,6 +907,14 @@ static int __init omap_sr_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
pm_runtime_irq_safe(&pdev->dev);
sr_info->name = kasprintf(GFP_KERNEL, "%s", pdata->name);
if (!sr_info->name) {
dev_err(&pdev->dev, "%s: Unable to alloc SR instance name\n",
__func__);
ret = -ENOMEM;
goto err_release_region;
}
sr_info->pdev = pdev;
sr_info->srid = pdev->id;
sr_info->voltdm = pdata->voltdm;
@ -997,20 +962,12 @@ static int __init omap_sr_probe(struct platform_device *pdev)
}
}
name = kasprintf(GFP_KERNEL, "sr_%s", sr_info->voltdm->name);
if (!name) {
dev_err(&pdev->dev, "%s: Unable to alloc debugfs name\n",
__func__);
ret = -ENOMEM;
goto err_iounmap;
}
sr_info->dbg_dir = debugfs_create_dir(name, sr_dbg_dir);
kfree(name);
sr_info->dbg_dir = debugfs_create_dir(sr_info->name, sr_dbg_dir);
if (IS_ERR_OR_NULL(sr_info->dbg_dir)) {
dev_err(&pdev->dev, "%s: Unable to create debugfs directory\n",
__func__);
ret = PTR_ERR(sr_info->dbg_dir);
goto err_iounmap;
goto err_free_name;
}
(void) debugfs_create_file("autocomp", S_IRUGO | S_IWUSR,
@ -1019,8 +976,6 @@ static int __init omap_sr_probe(struct platform_device *pdev)
&sr_info->err_weight);
(void) debugfs_create_x32("errmaxlimit", S_IRUGO, sr_info->dbg_dir,
&sr_info->err_maxlimit);
(void) debugfs_create_x32("errminlimit", S_IRUGO, sr_info->dbg_dir,
&sr_info->err_minlimit);
nvalue_dir = debugfs_create_dir("nvalue", sr_info->dbg_dir);
if (IS_ERR_OR_NULL(nvalue_dir)) {
@ -1030,12 +985,10 @@ static int __init omap_sr_probe(struct platform_device *pdev)
goto err_debugfs;
}
omap_voltage_get_volttable(sr_info->voltdm, &volt_data);
if (!volt_data) {
dev_warn(&pdev->dev, "%s: No Voltage table for the"
" corresponding vdd vdd_%s. Cannot create debugfs"
"entries for n-values\n",
__func__, sr_info->voltdm->name);
if (sr_info->nvalue_count == 0 || !sr_info->nvalue_table) {
dev_warn(&pdev->dev, "%s: %s: No Voltage table for the corresponding vdd. Cannot create debugfs entries for n-values\n",
__func__, sr_info->name);
ret = -ENODATA;
goto err_debugfs;
}
@ -1043,16 +996,23 @@ static int __init omap_sr_probe(struct platform_device *pdev)
for (i = 0; i < sr_info->nvalue_count; i++) {
char name[NVALUE_NAME_LEN + 1];
snprintf(name, sizeof(name), "volt_%d",
volt_data[i].volt_nominal);
snprintf(name, sizeof(name), "volt_%lu",
sr_info->nvalue_table[i].volt_nominal);
(void) debugfs_create_x32(name, S_IRUGO | S_IWUSR, nvalue_dir,
&(sr_info->nvalue_table[i].nvalue));
snprintf(name, sizeof(name), "errminlimit_%lu",
sr_info->nvalue_table[i].volt_nominal);
(void) debugfs_create_x32(name, S_IRUGO | S_IWUSR, nvalue_dir,
&(sr_info->nvalue_table[i].errminlimit));
}
return ret;
err_debugfs:
debugfs_remove_recursive(sr_info->dbg_dir);
err_free_name:
kfree(sr_info->name);
err_iounmap:
list_del(&sr_info->node);
iounmap(sr_info->base);
@ -1089,6 +1049,7 @@ static int __devexit omap_sr_remove(struct platform_device *pdev)
list_del(&sr_info->node);
iounmap(sr_info->base);
kfree(sr_info->name);
kfree(sr_info);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(mem->start, resource_size(mem));

74
arch/arm/mach-omap2/smartreflex.h → include/linux/power/smartreflex.h
View File

@ -17,12 +17,13 @@
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARM_OMAP_SMARTREFLEX_H
#define __ASM_ARM_OMAP_SMARTREFLEX_H
#ifndef __POWER_SMARTREFLEX_H
#define __POWER_SMARTREFLEX_H
#include <linux/types.h>
#include <linux/platform_device.h>
#include "voltage.h"
#include <linux/delay.h>
#include <plat/voltage.h>
/*
* Different Smartreflex IPs version. The v1 is the 65nm version used in
@ -142,6 +143,51 @@
#define OMAP3430_SR_ERRWEIGHT 0x04
#define OMAP3430_SR_ERRMAXLIMIT 0x02
struct omap_sr {
char *name;
struct list_head node;
struct platform_device *pdev;
struct omap_sr_nvalue_table *nvalue_table;
struct voltagedomain *voltdm;
struct dentry *dbg_dir;
unsigned int irq;
int srid;
int ip_type;
int nvalue_count;
bool autocomp_active;
u32 clk_length;
u32 err_weight;
u32 err_minlimit;
u32 err_maxlimit;
u32 accum_data;
u32 senn_avgweight;
u32 senp_avgweight;
u32 senp_mod;
u32 senn_mod;
void __iomem *base;
};
/**
* test_cond_timeout - busy-loop, testing a condition
* @cond: condition to test until it evaluates to true
* @timeout: maximum number of microseconds in the timeout
* @index: loop index (integer)
*
* Loop waiting for @cond to become true or until at least @timeout
* microseconds have passed. To use, define some integer @index in the
* calling code. After running, if @index == @timeout, then the loop has
* timed out.
*
* Copied from omap_test_timeout */
#define sr_test_cond_timeout(cond, timeout, index) \
({ \
for (index = 0; index < timeout; index++) { \
if (cond) \
break; \
udelay(1); \
} \
})
/**
* struct omap_sr_pmic_data - Strucutre to be populated by pmic code to pass
* pmic specific info to smartreflex driver
@ -161,7 +207,7 @@ struct omap_smartreflex_dev_attr {
const char *sensor_voltdm_name;
};
#ifdef CONFIG_OMAP_SMARTREFLEX
#ifdef CONFIG_POWER_AVS_OMAP
/*
* The smart reflex driver supports CLASS1 CLASS2 and CLASS3 SR.
* The smartreflex class driver should pass the class type.
@ -186,10 +232,10 @@ struct omap_smartreflex_dev_attr {
* based decisions.
*/
struct omap_sr_class_data {
int (*enable)(struct voltagedomain *voltdm);
int (*disable)(struct voltagedomain *voltdm, int is_volt_reset);
int (*configure)(struct voltagedomain *voltdm);
int (*notify)(struct voltagedomain *voltdm, u32 status);
int (*enable)(struct omap_sr *sr);
int (*disable)(struct omap_sr *sr, int is_volt_reset);
int (*configure)(struct omap_sr *sr);
int (*notify)(struct omap_sr *sr, u32 status);
u8 notify_flags;
u8 class_type;
};
@ -197,17 +243,22 @@ struct omap_sr_class_data {
/**
* struct omap_sr_nvalue_table - Smartreflex n-target value info
*
* @efuse_offs: The offset of the efuse where n-target values are stored.
* @nvalue: The n-target value.
* @efuse_offs: The offset of the efuse where n-target values are stored.
* @nvalue: The n-target value.
* @errminlimit: The value of the ERRMINLIMIT bitfield for this n-target
* @volt_nominal: microvolts DC that the VDD is initially programmed to
*/
struct omap_sr_nvalue_table {
u32 efuse_offs;
u32 nvalue;
u32 errminlimit;
unsigned long volt_nominal;
};
/**
* struct omap_sr_data - Smartreflex platform data.
*
* @name: instance name
* @ip_type: Smartreflex IP type.
* @senp_mod: SENPENABLE value for the sr
* @senn_mod: SENNENABLE value for sr
@ -219,6 +270,7 @@ struct omap_sr_nvalue_table {
* @voltdm: Pointer to the voltage domain associated with the SR
*/
struct omap_sr_data {
const char *name;
int ip_type;
u32 senp_mod;
u32 senn_mod;