* [PATCH 0/3] mfd: max8997: add regmap support
@ 2014-03-11 13:58 Robert Baldyga
2014-03-11 13:58 ` [PATCH 1/3] mfd: max8997: use regmap to access registers Robert Baldyga
` (2 more replies)
0 siblings, 3 replies; 9+ messages in thread
From: Robert Baldyga @ 2014-03-11 13:58 UTC (permalink / raw)
To: sameo, lee.jones
Cc: myungjoo.ham, cw00.choi, dmitry.torokhov, cooloney, rpurdie,
dbaryshkov, dwmw2, lgirdwood, broonie, a.zummo, paul.gortmaker,
linux-kernel, linux-input, linux-leds, rtc-linux, m.szyprowski,
k.kozlowski, Robert Baldyga
Hi,
This patchset modifies max8997 driver and associated function drivers to use
register maps instead of operating directly on i2c bus. This change allowed
to simplify irq handling, and to move some initializations to individual
function drivers. Hence now when some functions are not enabled, their i2c
clients, regmaps and irqs are not registered.
Best regards
Robert Baldyga
Samsung R&D Institute Poland
Robert Baldyga (3):
mfd: max8997: use regmap to access registers
mfd: max8997: handle IRQs using regmap
mfd: max8997: move regmap handling to function drivers
drivers/extcon/extcon-max8997.c | 136 ++++++++++--
drivers/input/misc/max8997_haptic.c | 117 +++++++++--
drivers/leds/leds-max8997.c | 13 +-
drivers/mfd/Makefile | 2 +-
drivers/mfd/max8997-irq.c | 387 -----------------------------------
drivers/mfd/max8997.c | 207 ++++++-------------
drivers/power/max8997_charger.c | 33 +--
drivers/regulator/max8997.c | 87 ++++----
drivers/rtc/rtc-max8997.c | 98 ++++++---
include/linux/mfd/max8997-private.h | 86 ++++++--
10 files changed, 482 insertions(+), 684 deletions(-)
delete mode 100644 drivers/mfd/max8997-irq.c
--
1.7.9.5
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH 1/3] mfd: max8997: use regmap to access registers
2014-03-11 13:58 [PATCH 0/3] mfd: max8997: add regmap support Robert Baldyga
@ 2014-03-11 13:58 ` Robert Baldyga
2014-03-11 14:32 ` Krzysztof Kozlowski
2014-03-11 13:58 ` [PATCH 2/3] mfd: max8997: handle IRQs using regmap Robert Baldyga
2014-03-11 13:58 ` [PATCH 3/3] mfd: max8997: move regmap handling to function drivers Robert Baldyga
2 siblings, 1 reply; 9+ messages in thread
From: Robert Baldyga @ 2014-03-11 13:58 UTC (permalink / raw)
To: sameo, lee.jones
Cc: myungjoo.ham, cw00.choi, dmitry.torokhov, cooloney, rpurdie,
dbaryshkov, dwmw2, lgirdwood, broonie, a.zummo, paul.gortmaker,
linux-kernel, linux-input, linux-leds, rtc-linux, m.szyprowski,
k.kozlowski, Robert Baldyga
This patch modifies max8997 driver and each associated function driver,
to use regmap instead of operating directly on i2c bus. It will allow to
simplify IRQ handling using regmap-irq.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
---
drivers/extcon/extcon-max8997.c | 31 ++++----
drivers/input/misc/max8997_haptic.c | 34 +++++----
drivers/leds/leds-max8997.c | 13 ++--
drivers/mfd/max8997-irq.c | 64 ++++++----------
drivers/mfd/max8997.c | 143 ++++++++++++++++-------------------
drivers/power/max8997_charger.c | 33 ++++----
drivers/regulator/max8997.c | 87 ++++++++++-----------
drivers/rtc/rtc-max8997.c | 56 ++++++++------
include/linux/mfd/max8997-private.h | 17 ++---
9 files changed, 229 insertions(+), 249 deletions(-)
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index 6a00464..f258c08 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -27,6 +27,7 @@
#include <linux/mfd/max8997-private.h>
#include <linux/extcon.h>
#include <linux/irqdomain.h>
+#include <linux/regmap.h>
#define DEV_NAME "max8997-muic"
#define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
@@ -116,7 +117,7 @@ enum max8997_muic_charger_type {
struct max8997_muic_info {
struct device *dev;
- struct i2c_client *muic;
+ struct max8997_dev *max8997;
struct extcon_dev *edev;
int prev_cable_type;
int prev_chg_type;
@@ -190,10 +191,10 @@ static int max8997_muic_set_debounce_time(struct max8997_muic_info *info,
case ADC_DEBOUNCE_TIME_10MS:
case ADC_DEBOUNCE_TIME_25MS:
case ADC_DEBOUNCE_TIME_38_62MS:
- ret = max8997_update_reg(info->muic,
+ ret = regmap_update_bits(info->max8997->regmap_muic,
MAX8997_MUIC_REG_CONTROL3,
- time << CONTROL3_ADCDBSET_SHIFT,
- CONTROL3_ADCDBSET_MASK);
+ CONTROL3_ADCDBSET_MASK,
+ time << CONTROL3_ADCDBSET_SHIFT);
if (ret) {
dev_err(info->dev, "failed to set ADC debounce time\n");
return ret;
@@ -228,8 +229,8 @@ static int max8997_muic_set_path(struct max8997_muic_info *info,
else
ctrl1 = CONTROL1_SW_OPEN;
- ret = max8997_update_reg(info->muic,
- MAX8997_MUIC_REG_CONTROL1, ctrl1, COMP_SW_MASK);
+ ret = regmap_update_bits(info->max8997->regmap_muic,
+ MAX8997_MUIC_REG_CONTROL1, COMP_SW_MASK, ctrl1);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return ret;
@@ -240,9 +241,9 @@ static int max8997_muic_set_path(struct max8997_muic_info *info,
else
ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
- ret = max8997_update_reg(info->muic,
- MAX8997_MUIC_REG_CONTROL2, ctrl2,
- CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK);
+ ret = regmap_update_bits(info->max8997->regmap_muic,
+ MAX8997_MUIC_REG_CONTROL2,
+ CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return ret;
@@ -543,8 +544,8 @@ static void max8997_muic_irq_work(struct work_struct *work)
if (info->irq == muic_irqs[i].virq)
irq_type = muic_irqs[i].irq;
- ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
- 2, info->status);
+ ret = regmap_bulk_read(info->max8997->regmap_muic,
+ MAX8997_MUIC_REG_STATUS1, info->status, 2);
if (ret) {
dev_err(info->dev, "failed to read muic register\n");
mutex_unlock(&info->mutex);
@@ -605,8 +606,8 @@ static int max8997_muic_detect_dev(struct max8997_muic_info *info)
mutex_lock(&info->mutex);
/* Read STATUSx register to detect accessory */
- ret = max8997_bulk_read(info->muic,
- MAX8997_MUIC_REG_STATUS1, 2, info->status);
+ ret = regmap_bulk_read(info->max8997->regmap_muic,
+ MAX8997_MUIC_REG_STATUS1, info->status, 2);
if (ret) {
dev_err(info->dev, "failed to read MUIC register\n");
mutex_unlock(&info->mutex);
@@ -667,7 +668,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
}
info->dev = &pdev->dev;
- info->muic = max8997->muic;
+ info->max8997 = max8997;
platform_set_drvdata(pdev, info);
mutex_init(&info->mutex);
@@ -721,7 +722,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
/* Initialize registers according to platform data */
for (i = 0; i < muic_pdata->num_init_data; i++) {
- max8997_write_reg(info->muic,
+ regmap_write(info->max8997->regmap_muic,
muic_pdata->init_data[i].addr,
muic_pdata->init_data[i].data);
}
diff --git a/drivers/input/misc/max8997_haptic.c b/drivers/input/misc/max8997_haptic.c
index 1fea548..d3f7079 100644
--- a/drivers/input/misc/max8997_haptic.c
+++ b/drivers/input/misc/max8997_haptic.c
@@ -31,6 +31,7 @@
#include <linux/mfd/max8997-private.h>
#include <linux/mfd/max8997.h>
#include <linux/regulator/consumer.h>
+#include <linux/regmap.h>
/* Haptic configuration 2 register */
#define MAX8997_MOTOR_TYPE_SHIFT 7
@@ -45,7 +46,7 @@
struct max8997_haptic {
struct device *dev;
- struct i2c_client *client;
+ struct max8997_dev *max8997;
struct input_dev *input_dev;
struct regulator *regulator;
@@ -86,19 +87,19 @@ static int max8997_haptic_set_duty_cycle(struct max8997_haptic *chip)
}
switch (chip->internal_mode_pattern) {
case 0:
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGPWMDC1, duty_index);
break;
case 1:
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGPWMDC2, duty_index);
break;
case 2:
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGPWMDC3, duty_index);
break;
case 3:
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGPWMDC4, duty_index);
break;
default:
@@ -115,50 +116,51 @@ static void max8997_haptic_configure(struct max8997_haptic *chip)
value = chip->type << MAX8997_MOTOR_TYPE_SHIFT |
chip->enabled << MAX8997_ENABLE_SHIFT |
chip->mode << MAX8997_MODE_SHIFT | chip->pwm_divisor;
- max8997_write_reg(chip->client, MAX8997_HAPTIC_REG_CONF2, value);
+ regmap_write(chip->max8997->regmap_haptic,
+ MAX8997_HAPTIC_REG_CONF2, value);
if (chip->mode == MAX8997_INTERNAL_MODE && chip->enabled) {
value = chip->internal_mode_pattern << MAX8997_CYCLE_SHIFT |
chip->internal_mode_pattern << MAX8997_SIG_PERIOD_SHIFT |
chip->internal_mode_pattern << MAX8997_SIG_DUTY_SHIFT |
chip->internal_mode_pattern << MAX8997_PWM_DUTY_SHIFT;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_DRVCONF, value);
switch (chip->internal_mode_pattern) {
case 0:
value = chip->pattern_cycle << 4;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_CYCLECONF1, value);
value = chip->pattern_signal_period;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGCONF1, value);
break;
case 1:
value = chip->pattern_cycle;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_CYCLECONF1, value);
value = chip->pattern_signal_period;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGCONF2, value);
break;
case 2:
value = chip->pattern_cycle << 4;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_CYCLECONF2, value);
value = chip->pattern_signal_period;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGCONF3, value);
break;
case 3:
value = chip->pattern_cycle;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_CYCLECONF2, value);
value = chip->pattern_signal_period;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGCONF4, value);
break;
@@ -267,7 +269,7 @@ static int max8997_haptic_probe(struct platform_device *pdev)
INIT_WORK(&chip->work, max8997_haptic_play_effect_work);
mutex_init(&chip->mutex);
- chip->client = iodev->haptic;
+ chip->max8997 = iodev;
chip->dev = &pdev->dev;
chip->input_dev = input_dev;
chip->pwm_period = haptic_pdata->pwm_period;
diff --git a/drivers/leds/leds-max8997.c b/drivers/leds/leds-max8997.c
index f449a8b..e2da8f2 100644
--- a/drivers/leds/leds-max8997.c
+++ b/drivers/leds/leds-max8997.c
@@ -18,6 +18,7 @@
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
#include <linux/platform_device.h>
+#include <linux/regmap.h>
#define MAX8997_LED_FLASH_SHIFT 3
#define MAX8997_LED_FLASH_CUR_MASK 0xf8
@@ -53,7 +54,6 @@ static void max8997_led_set_mode(struct max8997_led *led,
enum max8997_led_mode mode)
{
int ret;
- struct i2c_client *client = led->iodev->i2c;
u8 mask = 0, val;
switch (mode) {
@@ -89,8 +89,8 @@ static void max8997_led_set_mode(struct max8997_led *led,
}
if (mask) {
- ret = max8997_update_reg(client, MAX8997_REG_LEN_CNTL, val,
- mask);
+ ret = regmap_update_bits(led->iodev->regmap,
+ MAX8997_REG_LEN_CNTL, mask, val);
if (ret)
dev_err(led->iodev->dev,
"failed to update register(%d)\n", ret);
@@ -102,7 +102,6 @@ static void max8997_led_set_mode(struct max8997_led *led,
static void max8997_led_enable(struct max8997_led *led, bool enable)
{
int ret;
- struct i2c_client *client = led->iodev->i2c;
u8 val = 0, mask = MAX8997_LED_BOOST_ENABLE_MASK;
if (led->enabled == enable)
@@ -110,7 +109,8 @@ static void max8997_led_enable(struct max8997_led *led, bool enable)
val = enable ? MAX8997_LED_BOOST_ENABLE_MASK : 0;
- ret = max8997_update_reg(client, MAX8997_REG_BOOST_CNTL, val, mask);
+ ret = regmap_update_bits(led->iodev->regmap,
+ MAX8997_REG_BOOST_CNTL, mask, val);
if (ret)
dev_err(led->iodev->dev,
"failed to update register(%d)\n", ret);
@@ -122,7 +122,6 @@ static void max8997_led_set_current(struct max8997_led *led,
enum led_brightness value)
{
int ret;
- struct i2c_client *client = led->iodev->i2c;
u8 val = 0, mask = 0, reg = 0;
switch (led->led_mode) {
@@ -143,7 +142,7 @@ static void max8997_led_set_current(struct max8997_led *led,
}
if (mask) {
- ret = max8997_update_reg(client, reg, val, mask);
+ ret = regmap_update_bits(led->iodev->regmap, reg, mask, val);
if (ret)
dev_err(led->iodev->dev,
"failed to update register(%d)\n", ret);
diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c
index 43fa614..656d03b 100644
--- a/drivers/mfd/max8997-irq.c
+++ b/drivers/mfd/max8997-irq.c
@@ -26,6 +26,7 @@
#include <linux/interrupt.h>
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
+#include <linux/regmap.h>
static const u8 max8997_mask_reg[] = {
[PMIC_INT1] = MAX8997_REG_INT1MSK,
@@ -41,25 +42,6 @@ static const u8 max8997_mask_reg[] = {
[FLASH_STATUS] = MAX8997_REG_INVALID,
};
-static struct i2c_client *get_i2c(struct max8997_dev *max8997,
- enum max8997_irq_source src)
-{
- switch (src) {
- case PMIC_INT1 ... PMIC_INT4:
- return max8997->i2c;
- case FUEL_GAUGE:
- return NULL;
- case MUIC_INT1 ... MUIC_INT3:
- return max8997->muic;
- case GPIO_LOW ... GPIO_HI:
- return max8997->i2c;
- case FLASH_STATUS:
- return max8997->i2c;
- default:
- return ERR_PTR(-EINVAL);
- }
-}
-
struct max8997_irq_data {
int mask;
enum max8997_irq_source group;
@@ -124,15 +106,20 @@ static void max8997_irq_sync_unlock(struct irq_data *data)
int i;
for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
+ struct regmap *map;
u8 mask_reg = max8997_mask_reg[i];
- struct i2c_client *i2c = get_i2c(max8997, i);
+
+ if (i >= MUIC_INT1 && i <= MUIC_INT3)
+ map = max8997->regmap_muic;
+ else
+ map = max8997->regmap;
if (mask_reg == MAX8997_REG_INVALID ||
- IS_ERR_OR_NULL(i2c))
+ IS_ERR_OR_NULL(map))
continue;
max8997->irq_masks_cache[i] = max8997->irq_masks_cur[i];
- max8997_write_reg(i2c, max8997_mask_reg[i],
+ regmap_write(map, max8997_mask_reg[i],
max8997->irq_masks_cur[i]);
}
@@ -180,12 +167,12 @@ static struct irq_chip max8997_irq_chip = {
static irqreturn_t max8997_irq_thread(int irq, void *data)
{
struct max8997_dev *max8997 = data;
- u8 irq_reg[MAX8997_IRQ_GROUP_NR] = {};
- u8 irq_src;
+ unsigned int irq_reg[MAX8997_IRQ_GROUP_NR] = {};
+ unsigned int irq_src;
int ret;
int i, cur_irq;
- ret = max8997_read_reg(max8997->i2c, MAX8997_REG_INTSRC, &irq_src);
+ ret = regmap_read(max8997->regmap, MAX8997_REG_INTSRC, &irq_src);
if (ret < 0) {
dev_err(max8997->dev, "Failed to read interrupt source: %d\n",
ret);
@@ -194,8 +181,9 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
if (irq_src & MAX8997_IRQSRC_PMIC) {
/* PMIC INT1 ~ INT4 */
- max8997_bulk_read(max8997->i2c, MAX8997_REG_INT1, 4,
- &irq_reg[PMIC_INT1]);
+ for (i = 0; i < 4; ++i)
+ regmap_read(max8997->regmap,
+ MAX8997_REG_INT1+i, &irq_reg[PMIC_INT1+i]);
}
if (irq_src & MAX8997_IRQSRC_FUELGAUGE) {
/*
@@ -215,8 +203,9 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
}
if (irq_src & MAX8997_IRQSRC_MUIC) {
/* MUIC INT1 ~ INT3 */
- max8997_bulk_read(max8997->muic, MAX8997_MUIC_REG_INT1, 3,
- &irq_reg[MUIC_INT1]);
+ for (i = 0; i < 3; ++i)
+ regmap_read(max8997->regmap_muic,
+ MAX8997_MUIC_REG_INT1+i, &irq_reg[MUIC_INT1+i]);
}
if (irq_src & MAX8997_IRQSRC_GPIO) {
/* GPIO Interrupt */
@@ -225,8 +214,8 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
irq_reg[GPIO_LOW] = 0;
irq_reg[GPIO_HI] = 0;
- max8997_bulk_read(max8997->i2c, MAX8997_REG_GPIOCNTL1,
- MAX8997_NUM_GPIO, gpio_info);
+ regmap_bulk_read(max8997->regmap, MAX8997_REG_GPIOCNTL1,
+ gpio_info, MAX8997_NUM_GPIO);
for (i = 0; i < MAX8997_NUM_GPIO; i++) {
bool interrupt = false;
@@ -260,7 +249,7 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
}
if (irq_src & MAX8997_IRQSRC_FLASH) {
/* Flash Status Interrupt */
- ret = max8997_read_reg(max8997->i2c, MAX8997_REG_FLASHSTATUS,
+ ret = regmap_read(max8997->regmap, MAX8997_REG_FLASHSTATUS,
&irq_reg[FLASH_STATUS]);
}
@@ -312,7 +301,7 @@ int max8997_irq_init(struct max8997_dev *max8997)
struct irq_domain *domain;
int i;
int ret;
- u8 val;
+ unsigned int val;
if (!max8997->irq) {
dev_warn(max8997->dev, "No interrupt specified.\n");
@@ -323,22 +312,19 @@ int max8997_irq_init(struct max8997_dev *max8997)
/* Mask individual interrupt sources */
for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
- struct i2c_client *i2c;
-
max8997->irq_masks_cur[i] = 0xff;
max8997->irq_masks_cache[i] = 0xff;
- i2c = get_i2c(max8997, i);
- if (IS_ERR_OR_NULL(i2c))
+ if (IS_ERR_OR_NULL(max8997->regmap))
continue;
if (max8997_mask_reg[i] == MAX8997_REG_INVALID)
continue;
- max8997_write_reg(i2c, max8997_mask_reg[i], 0xff);
+ regmap_write(max8997->regmap, max8997_mask_reg[i], 0xff);
}
for (i = 0; i < MAX8997_NUM_GPIO; i++) {
- max8997->gpio_status[i] = (max8997_read_reg(max8997->i2c,
+ max8997->gpio_status[i] = (regmap_read(max8997->regmap,
MAX8997_REG_GPIOCNTL1 + i,
&val)
& MAX8997_GPIO_DATA_MASK) ?
diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
index 5adede0..ca6f310 100644
--- a/drivers/mfd/max8997.c
+++ b/drivers/mfd/max8997.c
@@ -33,6 +33,7 @@
#include <linux/mfd/core.h>
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
+#include <linux/regmap.h>
#define I2C_ADDR_PMIC (0xCC >> 1)
#define I2C_ADDR_MUIC (0x4A >> 1)
@@ -57,81 +58,29 @@ static struct of_device_id max8997_pmic_dt_match[] = {
};
#endif
-int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
-
- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_read_byte_data(i2c, reg);
- mutex_unlock(&max8997->iolock);
- if (ret < 0)
- return ret;
-
- ret &= 0xff;
- *dest = ret;
- return 0;
-}
-EXPORT_SYMBOL_GPL(max8997_read_reg);
-
-int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
-
- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
- mutex_unlock(&max8997->iolock);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(max8997_bulk_read);
-
-int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
-
- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_write_byte_data(i2c, reg, value);
- mutex_unlock(&max8997->iolock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(max8997_write_reg);
-
-int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
+static const struct regmap_config max8997_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_REG_PMIC_END,
+};
- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
- mutex_unlock(&max8997->iolock);
- if (ret < 0)
- return ret;
+static const struct regmap_config max8997_regmap_rtc_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_RTC_REG_END,
+};
- return 0;
-}
-EXPORT_SYMBOL_GPL(max8997_bulk_write);
+static const struct regmap_config max8997_regmap_haptic_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_HAPTIC_REG_END,
+};
-int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
-
- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_read_byte_data(i2c, reg);
- if (ret >= 0) {
- u8 old_val = ret & 0xff;
- u8 new_val = (val & mask) | (old_val & (~mask));
- ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
- }
- mutex_unlock(&max8997->iolock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(max8997_update_reg);
+static const struct regmap_config max8997_regmap_muic_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_MUIC_REG_END,
+};
/*
* Only the common platform data elements for max8997 are parsed here from the
@@ -209,11 +158,48 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
i2c_set_clientdata(max8997->rtc, max8997);
+
max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
i2c_set_clientdata(max8997->haptic, max8997);
+
max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
i2c_set_clientdata(max8997->muic, max8997);
+ max8997->regmap = devm_regmap_init_i2c(i2c, &max8997_regmap_config);
+ if (IS_ERR(max8997->regmap)) {
+ ret = PTR_ERR(max8997->regmap);
+ dev_err(max8997->dev,
+ "failed to allocate register map: %d\n", ret);
+ return ret;
+ }
+
+ max8997->regmap_rtc = devm_regmap_init_i2c(max8997->rtc,
+ &max8997_regmap_rtc_config);
+ if (IS_ERR(max8997->regmap_rtc)) {
+ ret = PTR_ERR(max8997->regmap_rtc);
+ dev_err(max8997->dev,
+ "failed to allocate register map: %d\n", ret);
+ goto err_regmap;
+ }
+
+ max8997->regmap_haptic = devm_regmap_init_i2c(max8997->haptic,
+ &max8997_regmap_haptic_config);
+ if (IS_ERR(max8997->regmap_haptic)) {
+ ret = PTR_ERR(max8997->regmap_haptic);
+ dev_err(max8997->dev,
+ "failed to allocate register map: %d\n", ret);
+ goto err_regmap;
+ }
+
+ max8997->regmap_muic = devm_regmap_init_i2c(max8997->muic,
+ &max8997_regmap_muic_config);
+ if (IS_ERR(max8997->regmap_muic)) {
+ ret = PTR_ERR(max8997->regmap_muic);
+ dev_err(max8997->dev,
+ "failed to allocate register map: %d\n", ret);
+ goto err_regmap;
+ }
+
pm_runtime_set_active(max8997->dev);
max8997_irq_init(max8997);
@@ -238,6 +224,7 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
err_mfd:
mfd_remove_devices(max8997->dev);
+err_regmap:
i2c_unregister_device(max8997->muic);
i2c_unregister_device(max8997->haptic);
i2c_unregister_device(max8997->rtc);
@@ -423,15 +410,15 @@ static int max8997_freeze(struct device *dev)
int i;
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
- max8997_read_reg(i2c, max8997_dumpaddr_pmic[i],
+ regmap_read(max8997->regmap, max8997_dumpaddr_pmic[i],
&max8997->reg_dump[i]);
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
- max8997_read_reg(i2c, max8997_dumpaddr_muic[i],
+ regmap_read(max8997->regmap_muic, max8997_dumpaddr_muic[i],
&max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
- max8997_read_reg(i2c, max8997_dumpaddr_haptic[i],
+ regmap_read(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
&max8997->reg_dump[i + MAX8997_REG_PMIC_END +
MAX8997_MUIC_REG_END]);
@@ -445,15 +432,15 @@ static int max8997_restore(struct device *dev)
int i;
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
- max8997_write_reg(i2c, max8997_dumpaddr_pmic[i],
+ regmap_write(max8997->regmap, max8997_dumpaddr_pmic[i],
max8997->reg_dump[i]);
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
- max8997_write_reg(i2c, max8997_dumpaddr_muic[i],
+ regmap_write(max8997->regmap_muic, max8997_dumpaddr_muic[i],
max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
- max8997_write_reg(i2c, max8997_dumpaddr_haptic[i],
+ regmap_write(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
max8997->reg_dump[i + MAX8997_REG_PMIC_END +
MAX8997_MUIC_REG_END]);
diff --git a/drivers/power/max8997_charger.c b/drivers/power/max8997_charger.c
index 4bdedfe..43d8481 100644
--- a/drivers/power/max8997_charger.c
+++ b/drivers/power/max8997_charger.c
@@ -26,6 +26,7 @@
#include <linux/power_supply.h>
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
+#include <linux/regmap.h>
struct charger_data {
struct device *dev;
@@ -46,14 +47,14 @@ static int max8997_battery_get_property(struct power_supply *psy,
{
struct charger_data *charger = container_of(psy,
struct charger_data, battery);
- struct i2c_client *i2c = charger->iodev->i2c;
int ret;
- u8 reg;
+ unsigned int reg;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = 0;
- ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, ®);
+ ret = regmap_read(charger->iodev->regmap,
+ MAX8997_REG_STATUS4, ®);
if (ret)
return ret;
if ((reg & (1 << 0)) == 0x1)
@@ -62,7 +63,8 @@ static int max8997_battery_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = 0;
- ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, ®);
+ ret = regmap_read(charger->iodev->regmap,
+ MAX8997_REG_STATUS4, ®);
if (ret)
return ret;
if ((reg & (1 << 2)) == 0x0)
@@ -71,7 +73,8 @@ static int max8997_battery_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = 0;
- ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, ®);
+ ret = regmap_read(charger->iodev->regmap,
+ MAX8997_REG_STATUS4, ®);
if (ret)
return ret;
/* DCINOK */
@@ -103,8 +106,8 @@ static int max8997_battery_probe(struct platform_device *pdev)
if (val > 0xf)
val = 0xf;
- ret = max8997_update_reg(iodev->i2c,
- MAX8997_REG_MBCCTRL5, val, 0xf);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL5, 0xf, val);
if (ret < 0) {
dev_err(&pdev->dev, "Cannot use i2c bus.\n");
return ret;
@@ -113,20 +116,20 @@ static int max8997_battery_probe(struct platform_device *pdev)
switch (pdata->timeout) {
case 5:
- ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
- 0x2 << 4, 0x7 << 4);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL1, 0x7 << 4, 0x2 << 4);
break;
case 6:
- ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
- 0x3 << 4, 0x7 << 4);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL1, 0x7 << 4, 0x3 << 4);
break;
case 7:
- ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
- 0x4 << 4, 0x7 << 4);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL1, 0x7 << 4, 0x4 << 4);
break;
case 0:
- ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
- 0x7 << 4, 0x7 << 4);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL1, 0x7 << 4, 0x7 << 4);
break;
default:
dev_err(&pdev->dev, "incorrect timeout value (%d)\n",
diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c
index 2d618fc..4001ed7 100644
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -33,6 +33,7 @@
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
#include <linux/regulator/of_regulator.h>
+#include <linux/regmap.h>
struct max8997_data {
struct device *dev;
@@ -51,7 +52,7 @@ struct max8997_data {
int buck125_gpioindex;
bool ignore_gpiodvs_side_effect;
- u8 saved_states[MAX8997_REG_MAX];
+ unsigned int saved_states[MAX8997_REG_MAX];
};
static const unsigned int safeoutvolt[] = {
@@ -258,15 +259,14 @@ static int max8997_get_enable_register(struct regulator_dev *rdev,
static int max8997_reg_is_enabled(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int ret, reg, mask, pattern;
- u8 val;
+ unsigned int val;
ret = max8997_get_enable_register(rdev, ®, &mask, &pattern);
if (ret)
return ret;
- ret = max8997_read_reg(i2c, reg, &val);
+ ret = regmap_read(max8997->iodev->regmap, reg, &val);
if (ret)
return ret;
@@ -276,27 +276,25 @@ static int max8997_reg_is_enabled(struct regulator_dev *rdev)
static int max8997_reg_enable(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int ret, reg, mask, pattern;
ret = max8997_get_enable_register(rdev, ®, &mask, &pattern);
if (ret)
return ret;
- return max8997_update_reg(i2c, reg, pattern, mask);
+ return regmap_update_bits(max8997->iodev->regmap, reg, mask, pattern);
}
static int max8997_reg_disable(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int ret, reg, mask, pattern;
ret = max8997_get_enable_register(rdev, ®, &mask, &pattern);
if (ret)
return ret;
- return max8997_update_reg(i2c, reg, ~pattern, mask);
+ return regmap_update_bits(max8997->iodev->regmap, reg, mask, ~pattern);
}
static int max8997_get_voltage_register(struct regulator_dev *rdev,
@@ -368,15 +366,14 @@ static int max8997_get_voltage_register(struct regulator_dev *rdev,
static int max8997_get_voltage_sel(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int reg, shift, mask, ret;
- u8 val;
+ unsigned int val;
ret = max8997_get_voltage_register(rdev, ®, &shift, &mask);
if (ret)
return ret;
- ret = max8997_read_reg(i2c, reg, &val);
+ ret = regmap_read(max8997->iodev->regmap, reg, &val);
if (ret)
return ret;
@@ -413,7 +410,6 @@ static int max8997_set_voltage_charger_cv(struct regulator_dev *rdev,
int min_uV, int max_uV, unsigned *selector)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int rid = rdev_get_id(rdev);
int lb, ub;
int reg, shift = 0, mask, ret = 0;
@@ -455,7 +451,8 @@ static int max8997_set_voltage_charger_cv(struct regulator_dev *rdev,
*selector = val;
- ret = max8997_update_reg(i2c, reg, val << shift, mask);
+ ret = regmap_update_bits(max8997->iodev->regmap,
+ reg, mask, val << shift);
return ret;
}
@@ -468,7 +465,6 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev,
int min_uV, int max_uV, unsigned *selector)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
const struct voltage_map_desc *desc;
int rid = rdev_get_id(rdev);
int i, reg, shift, mask, ret;
@@ -500,7 +496,8 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev,
if (ret)
return ret;
- ret = max8997_update_reg(i2c, reg, i << shift, mask << shift);
+ ret = regmap_update_bits(max8997->iodev->regmap,
+ reg, mask << shift, i << shift);
*selector = i;
return ret;
@@ -710,7 +707,6 @@ static int max8997_set_voltage_safeout_sel(struct regulator_dev *rdev,
unsigned selector)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int rid = rdev_get_id(rdev);
int reg, shift = 0, mask, ret;
@@ -721,13 +717,13 @@ static int max8997_set_voltage_safeout_sel(struct regulator_dev *rdev,
if (ret)
return ret;
- return max8997_update_reg(i2c, reg, selector << shift, mask << shift);
+ return regmap_update_bits(max8997->iodev->regmap,
+ reg, mask << shift, selector << shift);
}
static int max8997_reg_disable_suspend(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int ret, reg, mask, pattern;
int rid = rdev_get_id(rdev);
@@ -735,20 +731,22 @@ static int max8997_reg_disable_suspend(struct regulator_dev *rdev)
if (ret)
return ret;
- max8997_read_reg(i2c, reg, &max8997->saved_states[rid]);
+ regmap_read(max8997->iodev->regmap,
+ reg, &max8997->saved_states[rid]);
if (rid == MAX8997_LDO1 ||
rid == MAX8997_LDO10 ||
rid == MAX8997_LDO21) {
dev_dbg(&rdev->dev, "Conditional Power-Off for %s\n",
rdev->desc->name);
- return max8997_update_reg(i2c, reg, 0x40, mask);
+ return regmap_update_bits(max8997->iodev->regmap,
+ reg, mask, 0x40);
}
dev_dbg(&rdev->dev, "Full Power-Off for %s (%xh -> %xh)\n",
rdev->desc->name, max8997->saved_states[rid] & mask,
(~pattern) & mask);
- return max8997_update_reg(i2c, reg, ~pattern, mask);
+ return regmap_update_bits(max8997->iodev->regmap, reg, mask, ~pattern);
}
static struct regulator_ops max8997_ldo_ops = {
@@ -1032,7 +1030,6 @@ static int max8997_pmic_probe(struct platform_device *pdev)
struct regulator_config config = { };
struct regulator_dev **rdev;
struct max8997_data *max8997;
- struct i2c_client *i2c;
int i, ret, size, nr_dvs;
u8 max_buck1 = 0, max_buck2 = 0, max_buck5 = 0;
@@ -1062,7 +1059,6 @@ static int max8997_pmic_probe(struct platform_device *pdev)
max8997->iodev = iodev;
max8997->num_regulators = pdata->num_regulators;
platform_set_drvdata(pdev, max8997);
- i2c = max8997->iodev->i2c;
max8997->buck125_gpioindex = pdata->buck125_default_idx;
max8997->buck1_gpiodvs = pdata->buck1_gpiodvs;
@@ -1112,25 +1108,25 @@ static int max8997_pmic_probe(struct platform_device *pdev)
/* For the safety, set max voltage before setting up */
for (i = 0; i < 8; i++) {
- max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i,
- max_buck1, 0x3f);
- max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i,
- max_buck2, 0x3f);
- max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i,
- max_buck5, 0x3f);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK1DVS1 + i, 0x3f, max_buck1);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK2DVS1 + i, 0x3f, max_buck2);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK5DVS1 + i, 0x3f, max_buck5);
}
/* Initialize all the DVS related BUCK registers */
for (i = 0; i < nr_dvs; i++) {
- max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i,
- max8997->buck1_vol[i],
- 0x3f);
- max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i,
- max8997->buck2_vol[i],
- 0x3f);
- max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i,
- max8997->buck5_vol[i],
- 0x3f);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK1DVS1 + i,
+ 0x3f, max8997->buck1_vol[i]);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK2DVS1 + i,
+ 0x3f, max8997->buck2_vol[i]);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK5DVS1 + i,
+ 0x3f, max8997->buck5_vol[i]);
}
/*
@@ -1174,16 +1170,17 @@ static int max8997_pmic_probe(struct platform_device *pdev)
}
/* DVS-GPIO disabled */
- max8997_update_reg(i2c, MAX8997_REG_BUCK1CTRL, (pdata->buck1_gpiodvs) ?
- (1 << 1) : (0 << 1), 1 << 1);
- max8997_update_reg(i2c, MAX8997_REG_BUCK2CTRL, (pdata->buck2_gpiodvs) ?
- (1 << 1) : (0 << 1), 1 << 1);
- max8997_update_reg(i2c, MAX8997_REG_BUCK5CTRL, (pdata->buck5_gpiodvs) ?
- (1 << 1) : (0 << 1), 1 << 1);
+ regmap_update_bits(max8997->iodev->regmap, MAX8997_REG_BUCK1CTRL,
+ 1 << 1, (pdata->buck1_gpiodvs) ? (1 << 1) : (0 << 1));
+ regmap_update_bits(max8997->iodev->regmap, MAX8997_REG_BUCK2CTRL,
+ 1 << 1, (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1));
+ regmap_update_bits(max8997->iodev->regmap, MAX8997_REG_BUCK5CTRL,
+ 1 << 1, (pdata->buck5_gpiodvs) ? (1 << 1) : (0 << 1));
/* Misc Settings */
max8997->ramp_delay = 10; /* set 10mV/us, which is the default */
- max8997_write_reg(i2c, MAX8997_REG_BUCKRAMP, (0xf << 4) | 0x9);
+ regmap_write(max8997->iodev->regmap,
+ MAX8997_REG_BUCKRAMP, (0xf << 4) | 0x9);
for (i = 0; i < pdata->num_regulators; i++) {
const struct voltage_map_desc *desc;
diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
index 0777c01..b866f7d5 100644
--- a/drivers/rtc/rtc-max8997.c
+++ b/drivers/rtc/rtc-max8997.c
@@ -20,6 +20,7 @@
#include <linux/platform_device.h>
#include <linux/mfd/max8997-private.h>
#include <linux/irqdomain.h>
+#include <linux/regmap.h>
/* Module parameter for WTSR function control */
static int wtsr_en = 1;
@@ -68,7 +69,6 @@ enum {
struct max8997_rtc_info {
struct device *dev;
struct max8997_dev *max8997;
- struct i2c_client *rtc;
struct rtc_device *rtc_dev;
struct mutex lock;
int virq;
@@ -118,8 +118,8 @@ static inline int max8997_rtc_set_update_reg(struct max8997_rtc_info *info)
{
int ret;
- ret = max8997_write_reg(info->rtc, MAX8997_RTC_UPDATE1,
- RTC_UDR_MASK);
+ ret = regmap_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_UPDATE1, RTC_UDR_MASK);
if (ret < 0)
dev_err(info->dev, "%s: fail to write update reg(%d)\n",
__func__, ret);
@@ -140,7 +140,8 @@ static int max8997_rtc_read_time(struct device *dev, struct rtc_time *tm)
int ret;
mutex_lock(&info->lock);
- ret = max8997_bulk_read(info->rtc, MAX8997_RTC_SEC, RTC_NR_TIME, data);
+ ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_SEC, data, RTC_NR_TIME);
mutex_unlock(&info->lock);
if (ret < 0) {
@@ -166,7 +167,8 @@ static int max8997_rtc_set_time(struct device *dev, struct rtc_time *tm)
mutex_lock(&info->lock);
- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_SEC, RTC_NR_TIME, data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write time reg(%d)\n", __func__,
ret);
@@ -183,13 +185,13 @@ static int max8997_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct max8997_rtc_info *info = dev_get_drvdata(dev);
u8 data[RTC_NR_TIME];
- u8 val;
+ unsigned int val;
int i, ret;
mutex_lock(&info->lock);
- ret = max8997_bulk_read(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s:%d fail to read alarm reg(%d)\n",
__func__, __LINE__, ret);
@@ -207,7 +209,8 @@ static int max8997_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
}
alrm->pending = 0;
- ret = max8997_read_reg(info->max8997->i2c, MAX8997_REG_STATUS1, &val);
+ ret = regmap_read(info->max8997->regmap_rtc,
+ MAX8997_REG_STATUS1, &val);
if (ret < 0) {
dev_err(info->dev, "%s:%d fail to read status1 reg(%d)\n",
__func__, __LINE__, ret);
@@ -230,8 +233,8 @@ static int max8997_rtc_stop_alarm(struct max8997_rtc_info *info)
if (!mutex_is_locked(&info->lock))
dev_warn(info->dev, "%s: should have mutex locked\n", __func__);
- ret = max8997_bulk_read(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
__func__, ret);
@@ -241,8 +244,8 @@ static int max8997_rtc_stop_alarm(struct max8997_rtc_info *info)
for (i = 0; i < RTC_NR_TIME; i++)
data[i] &= ~ALARM_ENABLE_MASK;
- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
__func__, ret);
@@ -262,8 +265,8 @@ static int max8997_rtc_start_alarm(struct max8997_rtc_info *info)
if (!mutex_is_locked(&info->lock))
dev_warn(info->dev, "%s: should have mutex locked\n", __func__);
- ret = max8997_bulk_read(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
__func__, ret);
@@ -281,8 +284,8 @@ static int max8997_rtc_start_alarm(struct max8997_rtc_info *info)
if (data[RTC_DATE] & 0x1f)
data[RTC_DATE] |= (1 << ALARM_ENABLE_SHIFT);
- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
__func__, ret);
@@ -313,8 +316,8 @@ static int max8997_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
if (ret < 0)
goto out;
- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
__func__, ret);
@@ -385,7 +388,8 @@ static void max8997_rtc_enable_wtsr(struct max8997_rtc_info *info, bool enable)
dev_info(info->dev, "%s: %s WTSR\n", __func__,
enable ? "enable" : "disable");
- ret = max8997_update_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, val, mask);
+ ret = regmap_update_bits(info->max8997->regmap_rtc,
+ MAX8997_RTC_WTSR_SMPL, mask, val);
if (ret < 0) {
dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n",
__func__, ret);
@@ -398,7 +402,7 @@ static void max8997_rtc_enable_wtsr(struct max8997_rtc_info *info, bool enable)
static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
{
int ret;
- u8 val, mask;
+ unsigned int val, mask;
if (!smpl_en)
return;
@@ -413,7 +417,8 @@ static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
dev_info(info->dev, "%s: %s SMPL\n", __func__,
enable ? "enable" : "disable");
- ret = max8997_update_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, val, mask);
+ ret = regmap_update_bits(info->max8997->regmap_rtc,
+ MAX8997_RTC_WTSR_SMPL, mask, val);
if (ret < 0) {
dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n",
__func__, ret);
@@ -423,7 +428,8 @@ static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
max8997_rtc_set_update_reg(info);
val = 0;
- max8997_read_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, &val);
+ regmap_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_WTSR_SMPL, &val);
pr_info("%s: WTSR_SMPL(0x%02x)\n", __func__, val);
}
@@ -438,7 +444,8 @@ static int max8997_rtc_init_reg(struct max8997_rtc_info *info)
info->rtc_24hr_mode = 1;
- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_CTRLMASK, 2, data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_CTRLMASK, data, 2);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",
__func__, ret);
@@ -463,7 +470,6 @@ static int max8997_rtc_probe(struct platform_device *pdev)
mutex_init(&info->lock);
info->dev = &pdev->dev;
info->max8997 = max8997;
- info->rtc = max8997->rtc;
platform_set_drvdata(pdev, info);
diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
index 78c76cd..ea80ef8 100644
--- a/include/linux/mfd/max8997-private.h
+++ b/include/linux/mfd/max8997-private.h
@@ -309,6 +309,8 @@ enum max8997_rtc_reg {
MAX8997_RTC_ALARM2_MONTH = 0x22,
MAX8997_RTC_ALARM2_YEAR = 0x23,
MAX8997_RTC_ALARM2_DAY_OF_MONTH = 0x24,
+
+ MAX8997_RTC_REG_END = 0x25,
};
enum max8997_irq_source {
@@ -390,6 +392,11 @@ struct max8997_dev {
unsigned long type;
struct platform_device *battery; /* battery control (not fuel gauge) */
+ struct regmap *regmap;
+ struct regmap *regmap_rtc;
+ struct regmap *regmap_haptic;
+ struct regmap *regmap_muic;
+
int irq;
int ono;
struct irq_domain *irq_domain;
@@ -398,7 +405,7 @@ struct max8997_dev {
int irq_masks_cache[MAX8997_IRQ_GROUP_NR];
/* For hibernation */
- u8 reg_dump[MAX8997_REG_PMIC_END + MAX8997_MUIC_REG_END +
+ unsigned int reg_dump[MAX8997_REG_PMIC_END + MAX8997_MUIC_REG_END +
MAX8997_HAPTIC_REG_END];
bool gpio_status[MAX8997_NUM_GPIO];
@@ -413,14 +420,6 @@ extern int max8997_irq_init(struct max8997_dev *max8997);
extern void max8997_irq_exit(struct max8997_dev *max8997);
extern int max8997_irq_resume(struct max8997_dev *max8997);
-extern int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest);
-extern int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count,
- u8 *buf);
-extern int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value);
-extern int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count,
- u8 *buf);
-extern int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask);
-
#define MAX8997_GPIO_INT_BOTH (0x3 << 4)
#define MAX8997_GPIO_INT_RISE (0x2 << 4)
#define MAX8997_GPIO_INT_FALL (0x1 << 4)
--
1.7.9.5
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH 2/3] mfd: max8997: handle IRQs using regmap
2014-03-11 13:58 [PATCH 0/3] mfd: max8997: add regmap support Robert Baldyga
2014-03-11 13:58 ` [PATCH 1/3] mfd: max8997: use regmap to access registers Robert Baldyga
@ 2014-03-11 13:58 ` Robert Baldyga
2014-03-11 14:43 ` Krzysztof Kozlowski
2014-03-11 13:58 ` [PATCH 3/3] mfd: max8997: move regmap handling to function drivers Robert Baldyga
2 siblings, 1 reply; 9+ messages in thread
From: Robert Baldyga @ 2014-03-11 13:58 UTC (permalink / raw)
To: sameo, lee.jones
Cc: myungjoo.ham, cw00.choi, dmitry.torokhov, cooloney, rpurdie,
dbaryshkov, dwmw2, lgirdwood, broonie, a.zummo, paul.gortmaker,
linux-kernel, linux-input, linux-leds, rtc-linux, m.szyprowski,
k.kozlowski, Robert Baldyga
This patch modifies mfd driver to use regmap for handling interrupts.
It allows to simplify irq handling process. This modifications needed
to make small changes in function drivers, which use interrupts.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
---
drivers/extcon/extcon-max8997.c | 3 +-
drivers/mfd/Makefile | 2 +-
drivers/mfd/max8997-irq.c | 373 -----------------------------------
drivers/mfd/max8997.c | 91 ++++++++-
drivers/rtc/rtc-max8997.c | 2 +-
include/linux/mfd/max8997-private.h | 63 +++++-
6 files changed, 147 insertions(+), 387 deletions(-)
delete mode 100644 drivers/mfd/max8997-irq.c
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index f258c08..5948061 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -679,7 +679,8 @@ static int max8997_muic_probe(struct platform_device *pdev)
struct max8997_muic_irq *muic_irq = &muic_irqs[i];
unsigned int virq = 0;
- virq = irq_create_mapping(max8997->irq_domain, muic_irq->irq);
+ virq = regmap_irq_get_virq(max8997->irq_data_muic,
+ muic_irq->irq);
if (!virq) {
ret = -EINVAL;
goto err_irq;
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 5aea5ef..db2a1eb 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -117,7 +117,7 @@ obj-$(CONFIG_MFD_MAX77693) += max77693.o max77693-irq.o
obj-$(CONFIG_MFD_MAX8907) += max8907.o
max8925-objs := max8925-core.o max8925-i2c.o
obj-$(CONFIG_MFD_MAX8925) += max8925.o
-obj-$(CONFIG_MFD_MAX8997) += max8997.o max8997-irq.o
+obj-$(CONFIG_MFD_MAX8997) += max8997.o
obj-$(CONFIG_MFD_MAX8998) += max8998.o max8998-irq.o
pcf50633-objs := pcf50633-core.o pcf50633-irq.o
diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c
deleted file mode 100644
index 656d03b..0000000
--- a/drivers/mfd/max8997-irq.c
+++ /dev/null
@@ -1,373 +0,0 @@
-/*
- * max8997-irq.c - Interrupt controller support for MAX8997
- *
- * Copyright (C) 2011 Samsung Electronics Co.Ltd
- * MyungJoo Ham <myungjoo.ham@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * This driver is based on max8998-irq.c
- */
-
-#include <linux/err.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/mfd/max8997.h>
-#include <linux/mfd/max8997-private.h>
-#include <linux/regmap.h>
-
-static const u8 max8997_mask_reg[] = {
- [PMIC_INT1] = MAX8997_REG_INT1MSK,
- [PMIC_INT2] = MAX8997_REG_INT2MSK,
- [PMIC_INT3] = MAX8997_REG_INT3MSK,
- [PMIC_INT4] = MAX8997_REG_INT4MSK,
- [FUEL_GAUGE] = MAX8997_REG_INVALID,
- [MUIC_INT1] = MAX8997_MUIC_REG_INTMASK1,
- [MUIC_INT2] = MAX8997_MUIC_REG_INTMASK2,
- [MUIC_INT3] = MAX8997_MUIC_REG_INTMASK3,
- [GPIO_LOW] = MAX8997_REG_INVALID,
- [GPIO_HI] = MAX8997_REG_INVALID,
- [FLASH_STATUS] = MAX8997_REG_INVALID,
-};
-
-struct max8997_irq_data {
- int mask;
- enum max8997_irq_source group;
-};
-
-#define DECLARE_IRQ(idx, _group, _mask) \
- [(idx)] = { .group = (_group), .mask = (_mask) }
-static const struct max8997_irq_data max8997_irqs[] = {
- DECLARE_IRQ(MAX8997_PMICIRQ_PWRONR, PMIC_INT1, 1 << 0),
- DECLARE_IRQ(MAX8997_PMICIRQ_PWRONF, PMIC_INT1, 1 << 1),
- DECLARE_IRQ(MAX8997_PMICIRQ_PWRON1SEC, PMIC_INT1, 1 << 3),
- DECLARE_IRQ(MAX8997_PMICIRQ_JIGONR, PMIC_INT1, 1 << 4),
- DECLARE_IRQ(MAX8997_PMICIRQ_JIGONF, PMIC_INT1, 1 << 5),
- DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT2, PMIC_INT1, 1 << 6),
- DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT1, PMIC_INT1, 1 << 7),
-
- DECLARE_IRQ(MAX8997_PMICIRQ_JIGR, PMIC_INT2, 1 << 0),
- DECLARE_IRQ(MAX8997_PMICIRQ_JIGF, PMIC_INT2, 1 << 1),
- DECLARE_IRQ(MAX8997_PMICIRQ_MR, PMIC_INT2, 1 << 2),
- DECLARE_IRQ(MAX8997_PMICIRQ_DVS1OK, PMIC_INT2, 1 << 3),
- DECLARE_IRQ(MAX8997_PMICIRQ_DVS2OK, PMIC_INT2, 1 << 4),
- DECLARE_IRQ(MAX8997_PMICIRQ_DVS3OK, PMIC_INT2, 1 << 5),
- DECLARE_IRQ(MAX8997_PMICIRQ_DVS4OK, PMIC_INT2, 1 << 6),
-
- DECLARE_IRQ(MAX8997_PMICIRQ_CHGINS, PMIC_INT3, 1 << 0),
- DECLARE_IRQ(MAX8997_PMICIRQ_CHGRM, PMIC_INT3, 1 << 1),
- DECLARE_IRQ(MAX8997_PMICIRQ_DCINOVP, PMIC_INT3, 1 << 2),
- DECLARE_IRQ(MAX8997_PMICIRQ_TOPOFFR, PMIC_INT3, 1 << 3),
- DECLARE_IRQ(MAX8997_PMICIRQ_CHGRSTF, PMIC_INT3, 1 << 5),
- DECLARE_IRQ(MAX8997_PMICIRQ_MBCHGTMEXPD, PMIC_INT3, 1 << 7),
-
- DECLARE_IRQ(MAX8997_PMICIRQ_RTC60S, PMIC_INT4, 1 << 0),
- DECLARE_IRQ(MAX8997_PMICIRQ_RTCA1, PMIC_INT4, 1 << 1),
- DECLARE_IRQ(MAX8997_PMICIRQ_RTCA2, PMIC_INT4, 1 << 2),
- DECLARE_IRQ(MAX8997_PMICIRQ_SMPL_INT, PMIC_INT4, 1 << 3),
- DECLARE_IRQ(MAX8997_PMICIRQ_RTC1S, PMIC_INT4, 1 << 4),
- DECLARE_IRQ(MAX8997_PMICIRQ_WTSR, PMIC_INT4, 1 << 5),
-
- DECLARE_IRQ(MAX8997_MUICIRQ_ADCError, MUIC_INT1, 1 << 2),
- DECLARE_IRQ(MAX8997_MUICIRQ_ADCLow, MUIC_INT1, 1 << 1),
- DECLARE_IRQ(MAX8997_MUICIRQ_ADC, MUIC_INT1, 1 << 0),
-
- DECLARE_IRQ(MAX8997_MUICIRQ_VBVolt, MUIC_INT2, 1 << 4),
- DECLARE_IRQ(MAX8997_MUICIRQ_DBChg, MUIC_INT2, 1 << 3),
- DECLARE_IRQ(MAX8997_MUICIRQ_DCDTmr, MUIC_INT2, 1 << 2),
- DECLARE_IRQ(MAX8997_MUICIRQ_ChgDetRun, MUIC_INT2, 1 << 1),
- DECLARE_IRQ(MAX8997_MUICIRQ_ChgTyp, MUIC_INT2, 1 << 0),
-
- DECLARE_IRQ(MAX8997_MUICIRQ_OVP, MUIC_INT3, 1 << 2),
-};
-
-static void max8997_irq_lock(struct irq_data *data)
-{
- struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
-
- mutex_lock(&max8997->irqlock);
-}
-
-static void max8997_irq_sync_unlock(struct irq_data *data)
-{
- struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
- int i;
-
- for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
- struct regmap *map;
- u8 mask_reg = max8997_mask_reg[i];
-
- if (i >= MUIC_INT1 && i <= MUIC_INT3)
- map = max8997->regmap_muic;
- else
- map = max8997->regmap;
-
- if (mask_reg == MAX8997_REG_INVALID ||
- IS_ERR_OR_NULL(map))
- continue;
- max8997->irq_masks_cache[i] = max8997->irq_masks_cur[i];
-
- regmap_write(map, max8997_mask_reg[i],
- max8997->irq_masks_cur[i]);
- }
-
- mutex_unlock(&max8997->irqlock);
-}
-
-static const inline struct max8997_irq_data *
-irq_to_max8997_irq(struct max8997_dev *max8997, int irq)
-{
- struct irq_data *data = irq_get_irq_data(irq);
- return &max8997_irqs[data->hwirq];
-}
-
-static void max8997_irq_mask(struct irq_data *data)
-{
- struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
- const struct max8997_irq_data *irq_data = irq_to_max8997_irq(max8997,
- data->irq);
-
- max8997->irq_masks_cur[irq_data->group] |= irq_data->mask;
-}
-
-static void max8997_irq_unmask(struct irq_data *data)
-{
- struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
- const struct max8997_irq_data *irq_data = irq_to_max8997_irq(max8997,
- data->irq);
-
- max8997->irq_masks_cur[irq_data->group] &= ~irq_data->mask;
-}
-
-static struct irq_chip max8997_irq_chip = {
- .name = "max8997",
- .irq_bus_lock = max8997_irq_lock,
- .irq_bus_sync_unlock = max8997_irq_sync_unlock,
- .irq_mask = max8997_irq_mask,
- .irq_unmask = max8997_irq_unmask,
-};
-
-#define MAX8997_IRQSRC_PMIC (1 << 1)
-#define MAX8997_IRQSRC_FUELGAUGE (1 << 2)
-#define MAX8997_IRQSRC_MUIC (1 << 3)
-#define MAX8997_IRQSRC_GPIO (1 << 4)
-#define MAX8997_IRQSRC_FLASH (1 << 5)
-static irqreturn_t max8997_irq_thread(int irq, void *data)
-{
- struct max8997_dev *max8997 = data;
- unsigned int irq_reg[MAX8997_IRQ_GROUP_NR] = {};
- unsigned int irq_src;
- int ret;
- int i, cur_irq;
-
- ret = regmap_read(max8997->regmap, MAX8997_REG_INTSRC, &irq_src);
- if (ret < 0) {
- dev_err(max8997->dev, "Failed to read interrupt source: %d\n",
- ret);
- return IRQ_NONE;
- }
-
- if (irq_src & MAX8997_IRQSRC_PMIC) {
- /* PMIC INT1 ~ INT4 */
- for (i = 0; i < 4; ++i)
- regmap_read(max8997->regmap,
- MAX8997_REG_INT1+i, &irq_reg[PMIC_INT1+i]);
- }
- if (irq_src & MAX8997_IRQSRC_FUELGAUGE) {
- /*
- * TODO: FUEL GAUGE
- *
- * This is to be supported by Max17042 driver. When
- * an interrupt incurs here, it should be relayed to a
- * Max17042 device that is connected (probably by
- * platform-data). However, we do not have interrupt
- * handling in Max17042 driver currently. The Max17042 IRQ
- * driver should be ready to be used as a stand-alone device and
- * a Max8997-dependent device. Because it is not ready in
- * Max17042-side and it is not too critical in operating
- * Max8997, we do not implement this in initial releases.
- */
- irq_reg[FUEL_GAUGE] = 0;
- }
- if (irq_src & MAX8997_IRQSRC_MUIC) {
- /* MUIC INT1 ~ INT3 */
- for (i = 0; i < 3; ++i)
- regmap_read(max8997->regmap_muic,
- MAX8997_MUIC_REG_INT1+i, &irq_reg[MUIC_INT1+i]);
- }
- if (irq_src & MAX8997_IRQSRC_GPIO) {
- /* GPIO Interrupt */
- u8 gpio_info[MAX8997_NUM_GPIO];
-
- irq_reg[GPIO_LOW] = 0;
- irq_reg[GPIO_HI] = 0;
-
- regmap_bulk_read(max8997->regmap, MAX8997_REG_GPIOCNTL1,
- gpio_info, MAX8997_NUM_GPIO);
- for (i = 0; i < MAX8997_NUM_GPIO; i++) {
- bool interrupt = false;
-
- switch (gpio_info[i] & MAX8997_GPIO_INT_MASK) {
- case MAX8997_GPIO_INT_BOTH:
- if (max8997->gpio_status[i] != gpio_info[i])
- interrupt = true;
- break;
- case MAX8997_GPIO_INT_RISE:
- if ((max8997->gpio_status[i] != gpio_info[i]) &&
- (gpio_info[i] & MAX8997_GPIO_DATA_MASK))
- interrupt = true;
- break;
- case MAX8997_GPIO_INT_FALL:
- if ((max8997->gpio_status[i] != gpio_info[i]) &&
- !(gpio_info[i] & MAX8997_GPIO_DATA_MASK))
- interrupt = true;
- break;
- default:
- break;
- }
-
- if (interrupt) {
- if (i < 8)
- irq_reg[GPIO_LOW] |= (1 << i);
- else
- irq_reg[GPIO_HI] |= (1 << (i - 8));
- }
-
- }
- }
- if (irq_src & MAX8997_IRQSRC_FLASH) {
- /* Flash Status Interrupt */
- ret = regmap_read(max8997->regmap, MAX8997_REG_FLASHSTATUS,
- &irq_reg[FLASH_STATUS]);
- }
-
- /* Apply masking */
- for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++)
- irq_reg[i] &= ~max8997->irq_masks_cur[i];
-
- /* Report */
- for (i = 0; i < MAX8997_IRQ_NR; i++) {
- if (irq_reg[max8997_irqs[i].group] & max8997_irqs[i].mask) {
- cur_irq = irq_find_mapping(max8997->irq_domain, i);
- if (cur_irq)
- handle_nested_irq(cur_irq);
- }
- }
-
- return IRQ_HANDLED;
-}
-
-int max8997_irq_resume(struct max8997_dev *max8997)
-{
- if (max8997->irq && max8997->irq_domain)
- max8997_irq_thread(0, max8997);
- return 0;
-}
-
-static int max8997_irq_domain_map(struct irq_domain *d, unsigned int irq,
- irq_hw_number_t hw)
-{
- struct max8997_dev *max8997 = d->host_data;
-
- irq_set_chip_data(irq, max8997);
- irq_set_chip_and_handler(irq, &max8997_irq_chip, handle_edge_irq);
- irq_set_nested_thread(irq, 1);
-#ifdef CONFIG_ARM
- set_irq_flags(irq, IRQF_VALID);
-#else
- irq_set_noprobe(irq);
-#endif
- return 0;
-}
-
-static struct irq_domain_ops max8997_irq_domain_ops = {
- .map = max8997_irq_domain_map,
-};
-
-int max8997_irq_init(struct max8997_dev *max8997)
-{
- struct irq_domain *domain;
- int i;
- int ret;
- unsigned int val;
-
- if (!max8997->irq) {
- dev_warn(max8997->dev, "No interrupt specified.\n");
- return 0;
- }
-
- mutex_init(&max8997->irqlock);
-
- /* Mask individual interrupt sources */
- for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
- max8997->irq_masks_cur[i] = 0xff;
- max8997->irq_masks_cache[i] = 0xff;
-
- if (IS_ERR_OR_NULL(max8997->regmap))
- continue;
- if (max8997_mask_reg[i] == MAX8997_REG_INVALID)
- continue;
-
- regmap_write(max8997->regmap, max8997_mask_reg[i], 0xff);
- }
-
- for (i = 0; i < MAX8997_NUM_GPIO; i++) {
- max8997->gpio_status[i] = (regmap_read(max8997->regmap,
- MAX8997_REG_GPIOCNTL1 + i,
- &val)
- & MAX8997_GPIO_DATA_MASK) ?
- true : false;
- }
-
- domain = irq_domain_add_linear(NULL, MAX8997_IRQ_NR,
- &max8997_irq_domain_ops, max8997);
- if (!domain) {
- dev_err(max8997->dev, "could not create irq domain\n");
- return -ENODEV;
- }
- max8997->irq_domain = domain;
-
- ret = request_threaded_irq(max8997->irq, NULL, max8997_irq_thread,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- "max8997-irq", max8997);
-
- if (ret) {
- dev_err(max8997->dev, "Failed to request IRQ %d: %d\n",
- max8997->irq, ret);
- return ret;
- }
-
- if (!max8997->ono)
- return 0;
-
- ret = request_threaded_irq(max8997->ono, NULL, max8997_irq_thread,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
- IRQF_ONESHOT, "max8997-ono", max8997);
-
- if (ret)
- dev_err(max8997->dev, "Failed to request ono-IRQ %d: %d\n",
- max8997->ono, ret);
-
- return 0;
-}
-
-void max8997_irq_exit(struct max8997_dev *max8997)
-{
- if (max8997->ono)
- free_irq(max8997->ono, max8997);
-
- if (max8997->irq)
- free_irq(max8997->irq, max8997);
-}
diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
index ca6f310..9b6edfa 100644
--- a/drivers/mfd/max8997.c
+++ b/drivers/mfd/max8997.c
@@ -64,6 +64,49 @@ static const struct regmap_config max8997_regmap_config = {
.max_register = MAX8997_REG_PMIC_END,
};
+static const struct regmap_irq max8997_irqs[] = {
+ /* PMIC_INT1 interrupts */
+ { .reg_offset = 0, .mask = PMIC_INT1_PWRONR_MASK, },
+ { .reg_offset = 0, .mask = PMIC_INT1_PWRONF_MASK, },
+ { .reg_offset = 0, .mask = PMIC_INT1_PWRON1SEC_MASK, },
+ { .reg_offset = 0, .mask = PMIC_INT1_JIGONR_MASK, },
+ { .reg_offset = 0, .mask = PMIC_INT1_JIGONF_MASK, },
+ { .reg_offset = 0, .mask = PMIC_INT1_LOWBAT2_MASK, },
+ { .reg_offset = 0, .mask = PMIC_INT1_LOWBAT1_MASK, },
+ /* PMIC_INT2 interrupts */
+ { .reg_offset = 1, .mask = PMIC_INT2_JIGR_MASK, },
+ { .reg_offset = 1, .mask = PMIC_INT2_JIGF_MASK, },
+ { .reg_offset = 1, .mask = PMIC_INT2_MR_MASK, },
+ { .reg_offset = 1, .mask = PMIC_INT2_DVS1OK_MASK, },
+ { .reg_offset = 1, .mask = PMIC_INT2_DVS2OK_MASK, },
+ { .reg_offset = 1, .mask = PMIC_INT2_DVS3OK_MASK, },
+ { .reg_offset = 1, .mask = PMIC_INT2_DVS4OK_MASK, },
+ /* PMIC_INT3 interrupts */
+ { .reg_offset = 2, .mask = PMIC_INT3_CHGINS_MASK, },
+ { .reg_offset = 2, .mask = PMIC_INT3_CHGRM_MASK, },
+ { .reg_offset = 2, .mask = PMIC_INT3_DCINOVP_MASK, },
+ { .reg_offset = 2, .mask = PMIC_INT3_TOPOFFR_MASK, },
+ { .reg_offset = 2, .mask = PMIC_INT3_CHGRSTF_MASK, },
+ { .reg_offset = 2, .mask = PMIC_INT3_MBCHGTMEXPD_MASK, },
+ /* PMIC_INT4 interrupts */
+ { .reg_offset = 3, .mask = PMIC_INT4_RTC60S_MASK, },
+ { .reg_offset = 3, .mask = PMIC_INT4_RTCA1_MASK, },
+ { .reg_offset = 3, .mask = PMIC_INT4_RTCA2_MASK, },
+ { .reg_offset = 3, .mask = PMIC_INT4_SMPL_INT_MASK, },
+ { .reg_offset = 3, .mask = PMIC_INT4_RTC1S_MASK, },
+ { .reg_offset = 3, .mask = PMIC_INT4_WTSR_MASK, },
+};
+
+static const struct regmap_irq_chip max8997_irq_chip = {
+ .name = "max8997",
+ .status_base = MAX8997_REG_INT1,
+ .mask_base = MAX8997_REG_INT1MSK,
+ .mask_invert = false,
+ .num_regs = 4,
+ .irqs = max8997_irqs,
+ .num_irqs = ARRAY_SIZE(max8997_irqs),
+};
+
static const struct regmap_config max8997_regmap_rtc_config = {
.reg_bits = 8,
.val_bits = 8,
@@ -82,6 +125,31 @@ static const struct regmap_config max8997_regmap_muic_config = {
.max_register = MAX8997_MUIC_REG_END,
};
+static const struct regmap_irq max8997_irqs_muic[] = {
+ /* MUIC_INT1 interrupts */
+ { .reg_offset = 0, .mask = MUIC_INT1_ADC_MASK, },
+ { .reg_offset = 0, .mask = MUIC_INT1_ADCLow_MASK, },
+ { .reg_offset = 0, .mask = MUIC_INT1_ADCError_MASK, },
+ /* MUIC_INT2 interrupts */
+ { .reg_offset = 1, .mask = MUIC_INT2_ChgTyp_MASK, },
+ { .reg_offset = 1, .mask = MUIC_INT2_ChgDetRun_MASK, },
+ { .reg_offset = 1, .mask = MUIC_INT2_DCDTmr_MASK, },
+ { .reg_offset = 1, .mask = MUIC_INT2_DBChg_MASK, },
+ { .reg_offset = 1, .mask = MUIC_INT2_VBVolt_MASK, },
+ /* MUIC_INT3 interrupts */
+ { .reg_offset = 2, .mask = MUIC_INT3_OVP_MASK, },
+};
+
+static const struct regmap_irq_chip max8997_irq_chip_muic = {
+ .name = "max8997-muic",
+ .status_base = MAX8997_MUIC_REG_INT1,
+ .mask_base = MAX8997_MUIC_REG_INTMASK1,
+ .mask_invert = true,
+ .num_regs = 3,
+ .irqs = max8997_irqs_muic,
+ .num_irqs = ARRAY_SIZE(max8997_irqs_muic),
+};
+
/*
* Only the common platform data elements for max8997 are parsed here from the
* device tree. Other sub-modules of max8997 such as pmic, rtc and others have
@@ -173,6 +241,15 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
return ret;
}
+ ret = regmap_add_irq_chip(max8997->regmap, max8997->irq,
+ IRQF_ONESHOT | IRQF_SHARED |
+ IRQF_TRIGGER_FALLING, 0,
+ &max8997_irq_chip, &max8997->irq_data);
+ if (ret) {
+ dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
+ return ret;
+ }
+
max8997->regmap_rtc = devm_regmap_init_i2c(max8997->rtc,
&max8997_regmap_rtc_config);
if (IS_ERR(max8997->regmap_rtc)) {
@@ -200,9 +277,17 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
goto err_regmap;
}
- pm_runtime_set_active(max8997->dev);
+ ret = regmap_add_irq_chip(max8997->regmap_muic, max8997->irq,
+ IRQF_ONESHOT | IRQF_SHARED |
+ IRQF_TRIGGER_FALLING, 0,
+ &max8997_irq_chip_muic,
+ &max8997->irq_data_muic);
+ if (ret) {
+ dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
+ return ret;
+ }
- max8997_irq_init(max8997);
+ pm_runtime_set_active(max8997->dev);
ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
ARRAY_SIZE(max8997_devs),
@@ -464,7 +549,7 @@ static int max8997_resume(struct device *dev)
if (device_may_wakeup(dev))
irq_set_irq_wake(max8997->irq, 0);
- return max8997_irq_resume(max8997);
+ return 0;
}
static const struct dev_pm_ops max8997_pm = {
diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
index b866f7d5..22769ea 100644
--- a/drivers/rtc/rtc-max8997.c
+++ b/drivers/rtc/rtc-max8997.c
@@ -494,7 +494,7 @@ static int max8997_rtc_probe(struct platform_device *pdev)
return ret;
}
- virq = irq_create_mapping(max8997->irq_domain, MAX8997_PMICIRQ_RTCA1);
+ virq = regmap_irq_get_virq(max8997->irq_data, MAX8997_PMICIRQ_RTCA1);
if (!virq) {
dev_err(&pdev->dev, "Failed to create mapping alarm IRQ\n");
ret = -ENXIO;
diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
index ea80ef8..af2f0aa 100644
--- a/include/linux/mfd/max8997-private.h
+++ b/include/linux/mfd/max8997-private.h
@@ -333,6 +333,48 @@ enum max8997_irq_source {
MAX8997_IRQ_GROUP_NR,
};
+#define PMIC_INT1_PWRONR_MASK (0x1 << 0)
+#define PMIC_INT1_PWRONF_MASK (0x1 << 1)
+#define PMIC_INT1_PWRON1SEC_MASK (0x1 << 3)
+#define PMIC_INT1_JIGONR_MASK (0x1 << 4)
+#define PMIC_INT1_JIGONF_MASK (0x1 << 5)
+#define PMIC_INT1_LOWBAT2_MASK (0x1 << 6)
+#define PMIC_INT1_LOWBAT1_MASK (0x1 << 7)
+
+#define PMIC_INT2_JIGR_MASK (0x1 << 0)
+#define PMIC_INT2_JIGF_MASK (0x1 << 1)
+#define PMIC_INT2_MR_MASK (0x1 << 2)
+#define PMIC_INT2_DVS1OK_MASK (0x1 << 3)
+#define PMIC_INT2_DVS2OK_MASK (0x1 << 4)
+#define PMIC_INT2_DVS3OK_MASK (0x1 << 5)
+#define PMIC_INT2_DVS4OK_MASK (0x1 << 6)
+
+#define PMIC_INT3_CHGINS_MASK (0x1 << 0)
+#define PMIC_INT3_CHGRM_MASK (0x1 << 1)
+#define PMIC_INT3_DCINOVP_MASK (0x1 << 2)
+#define PMIC_INT3_TOPOFFR_MASK (0x1 << 3)
+#define PMIC_INT3_CHGRSTF_MASK (0x1 << 5)
+#define PMIC_INT3_MBCHGTMEXPD_MASK (0x1 << 7)
+
+#define PMIC_INT4_RTC60S_MASK (0x1 << 0)
+#define PMIC_INT4_RTCA1_MASK (0x1 << 1)
+#define PMIC_INT4_RTCA2_MASK (0x1 << 2)
+#define PMIC_INT4_SMPL_INT_MASK (0x1 << 3)
+#define PMIC_INT4_RTC1S_MASK (0x1 << 4)
+#define PMIC_INT4_WTSR_MASK (0x1 << 5)
+
+#define MUIC_INT1_ADC_MASK (0x1 << 0)
+#define MUIC_INT1_ADCLow_MASK (0x1 << 1)
+#define MUIC_INT1_ADCError_MASK (0x1 << 2)
+
+#define MUIC_INT2_ChgTyp_MASK (0x1 << 0)
+#define MUIC_INT2_ChgDetRun_MASK (0x1 << 1)
+#define MUIC_INT2_DCDTmr_MASK (0x1 << 2)
+#define MUIC_INT2_DBChg_MASK (0x1 << 3)
+#define MUIC_INT2_VBVolt_MASK (0x1 << 4)
+
+#define MUIC_INT3_OVP_MASK (0x1 << 2)
+
enum max8997_irq {
MAX8997_PMICIRQ_PWRONR,
MAX8997_PMICIRQ_PWRONF,
@@ -364,19 +406,23 @@ enum max8997_irq {
MAX8997_PMICIRQ_RTC1S,
MAX8997_PMICIRQ_WTSR,
- MAX8997_MUICIRQ_ADCError,
- MAX8997_MUICIRQ_ADCLow,
+ MAX8997_PMICIRQ_NR,
+};
+
+enum max8997_irq_muic {
MAX8997_MUICIRQ_ADC,
+ MAX8997_MUICIRQ_ADCLow,
+ MAX8997_MUICIRQ_ADCError,
- MAX8997_MUICIRQ_VBVolt,
- MAX8997_MUICIRQ_DBChg,
- MAX8997_MUICIRQ_DCDTmr,
- MAX8997_MUICIRQ_ChgDetRun,
MAX8997_MUICIRQ_ChgTyp,
+ MAX8997_MUICIRQ_ChgDetRun,
+ MAX8997_MUICIRQ_DCDTmr,
+ MAX8997_MUICIRQ_DBChg,
+ MAX8997_MUICIRQ_VBVolt,
MAX8997_MUICIRQ_OVP,
- MAX8997_IRQ_NR,
+ MAX8997_MUCIRQ_NR,
};
#define MAX8997_NUM_GPIO 12
@@ -397,9 +443,10 @@ struct max8997_dev {
struct regmap *regmap_haptic;
struct regmap *regmap_muic;
+ struct regmap_irq_chip_data *irq_data;
+ struct regmap_irq_chip_data *irq_data_muic;
int irq;
int ono;
- struct irq_domain *irq_domain;
struct mutex irqlock;
int irq_masks_cur[MAX8997_IRQ_GROUP_NR];
int irq_masks_cache[MAX8997_IRQ_GROUP_NR];
--
1.7.9.5
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH 3/3] mfd: max8997: move regmap handling to function drivers
2014-03-11 13:58 [PATCH 0/3] mfd: max8997: add regmap support Robert Baldyga
2014-03-11 13:58 ` [PATCH 1/3] mfd: max8997: use regmap to access registers Robert Baldyga
2014-03-11 13:58 ` [PATCH 2/3] mfd: max8997: handle IRQs using regmap Robert Baldyga
@ 2014-03-11 13:58 ` Robert Baldyga
2014-03-11 15:07 ` Krzysztof Kozlowski
2 siblings, 1 reply; 9+ messages in thread
From: Robert Baldyga @ 2014-03-11 13:58 UTC (permalink / raw)
To: sameo, lee.jones
Cc: myungjoo.ham, cw00.choi, dmitry.torokhov, cooloney, rpurdie,
dbaryshkov, dwmw2, lgirdwood, broonie, a.zummo, paul.gortmaker,
linux-kernel, linux-input, linux-leds, rtc-linux, m.szyprowski,
k.kozlowski, Robert Baldyga
This patch moves code creating new i2c clients and regmaps to function
drivers which uses them. It allow to avoid creating this instances when
intividual function drivers are not enabled.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
---
drivers/extcon/extcon-max8997.c | 118 +++++++++++++++++++++++++++--
drivers/input/misc/max8997_haptic.c | 113 ++++++++++++++++++++++-----
drivers/mfd/max8997.c | 143 -----------------------------------
drivers/rtc/rtc-max8997.c | 74 ++++++++++++------
include/linux/mfd/max8997-private.h | 14 ++--
5 files changed, 262 insertions(+), 200 deletions(-)
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index 5948061..a71581a 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -118,6 +118,9 @@ enum max8997_muic_charger_type {
struct max8997_muic_info {
struct device *dev;
struct max8997_dev *max8997;
+ struct i2c_client *i2c;
+ struct regmap *regmap;
+ struct regmap_irq_chip_data *irq_data;
struct extcon_dev *edev;
int prev_cable_type;
int prev_chg_type;
@@ -144,6 +147,39 @@ struct max8997_muic_info {
*/
int path_usb;
int path_uart;
+
+ unsigned int reg_dump[MAX8997_MUIC_REG_END];
+};
+
+static const struct regmap_config max8997_muic_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_MUIC_REG_END,
+};
+
+static const struct regmap_irq max8997_irqs_muic[] = {
+ /* MUIC_INT1 interrupts */
+ { .reg_offset = 0, .mask = MUIC_INT1_ADC_MASK, },
+ { .reg_offset = 0, .mask = MUIC_INT1_ADCLow_MASK, },
+ { .reg_offset = 0, .mask = MUIC_INT1_ADCError_MASK, },
+ /* MUIC_INT2 interrupts */
+ { .reg_offset = 1, .mask = MUIC_INT2_ChgTyp_MASK, },
+ { .reg_offset = 1, .mask = MUIC_INT2_ChgDetRun_MASK, },
+ { .reg_offset = 1, .mask = MUIC_INT2_DCDTmr_MASK, },
+ { .reg_offset = 1, .mask = MUIC_INT2_DBChg_MASK, },
+ { .reg_offset = 1, .mask = MUIC_INT2_VBVolt_MASK, },
+ /* MUIC_INT3 interrupts */
+ { .reg_offset = 2, .mask = MUIC_INT3_OVP_MASK, },
+};
+
+static const struct regmap_irq_chip max8997_muic_irq_chip = {
+ .name = "max8997-muic",
+ .status_base = MAX8997_MUIC_REG_INT1,
+ .mask_base = MAX8997_MUIC_REG_INTMASK1,
+ .mask_invert = true,
+ .num_regs = 3,
+ .irqs = max8997_irqs_muic,
+ .num_irqs = ARRAY_SIZE(max8997_irqs_muic),
};
enum {
@@ -191,7 +227,7 @@ static int max8997_muic_set_debounce_time(struct max8997_muic_info *info,
case ADC_DEBOUNCE_TIME_10MS:
case ADC_DEBOUNCE_TIME_25MS:
case ADC_DEBOUNCE_TIME_38_62MS:
- ret = regmap_update_bits(info->max8997->regmap_muic,
+ ret = regmap_update_bits(info->regmap,
MAX8997_MUIC_REG_CONTROL3,
CONTROL3_ADCDBSET_MASK,
time << CONTROL3_ADCDBSET_SHIFT);
@@ -229,7 +265,7 @@ static int max8997_muic_set_path(struct max8997_muic_info *info,
else
ctrl1 = CONTROL1_SW_OPEN;
- ret = regmap_update_bits(info->max8997->regmap_muic,
+ ret = regmap_update_bits(info->regmap,
MAX8997_MUIC_REG_CONTROL1, COMP_SW_MASK, ctrl1);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
@@ -241,7 +277,7 @@ static int max8997_muic_set_path(struct max8997_muic_info *info,
else
ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
- ret = regmap_update_bits(info->max8997->regmap_muic,
+ ret = regmap_update_bits(info->regmap,
MAX8997_MUIC_REG_CONTROL2,
CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2);
if (ret < 0) {
@@ -544,7 +580,7 @@ static void max8997_muic_irq_work(struct work_struct *work)
if (info->irq == muic_irqs[i].virq)
irq_type = muic_irqs[i].irq;
- ret = regmap_bulk_read(info->max8997->regmap_muic,
+ ret = regmap_bulk_read(info->regmap,
MAX8997_MUIC_REG_STATUS1, info->status, 2);
if (ret) {
dev_err(info->dev, "failed to read muic register\n");
@@ -606,7 +642,7 @@ static int max8997_muic_detect_dev(struct max8997_muic_info *info)
mutex_lock(&info->mutex);
/* Read STATUSx register to detect accessory */
- ret = regmap_bulk_read(info->max8997->regmap_muic,
+ ret = regmap_bulk_read(info->regmap,
MAX8997_MUIC_REG_STATUS1, info->status, 2);
if (ret) {
dev_err(info->dev, "failed to read MUIC register\n");
@@ -670,6 +706,27 @@ static int max8997_muic_probe(struct platform_device *pdev)
info->dev = &pdev->dev;
info->max8997 = max8997;
+ info->i2c = i2c_new_dummy(max8997->i2c->adapter, MAX8997_I2C_ADDR_MUIC);
+
+ info->regmap = devm_regmap_init_i2c(info->i2c,
+ &max8997_muic_regmap_config);
+ if (IS_ERR(info->regmap)) {
+ ret = PTR_ERR(info->regmap);
+ dev_err(info->dev,
+ "failed to allocate register map: %d\n", ret);
+ goto err_regmap;
+ }
+
+ ret = regmap_add_irq_chip(info->regmap, max8997->irq,
+ IRQF_ONESHOT | IRQF_SHARED |
+ IRQF_TRIGGER_FALLING, 0,
+ &max8997_muic_irq_chip,
+ &info->irq_data);
+ if (ret) {
+ dev_err(info->dev, "failed to add irq chip: %d\n", ret);
+ goto err_regmap;
+ }
+
platform_set_drvdata(pdev, info);
mutex_init(&info->mutex);
@@ -679,8 +736,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
struct max8997_muic_irq *muic_irq = &muic_irqs[i];
unsigned int virq = 0;
- virq = regmap_irq_get_virq(max8997->irq_data_muic,
- muic_irq->irq);
+ virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq);
if (!virq) {
ret = -EINVAL;
goto err_irq;
@@ -723,7 +779,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
/* Initialize registers according to platform data */
for (i = 0; i < muic_pdata->num_init_data; i++) {
- regmap_write(info->max8997->regmap_muic,
+ regmap_write(info->regmap,
muic_pdata->init_data[i].addr,
muic_pdata->init_data[i].data);
}
@@ -779,6 +835,8 @@ static int max8997_muic_probe(struct platform_device *pdev)
err_irq:
while (--i >= 0)
free_irq(muic_irqs[i].virq, info);
+err_regmap:
+ i2c_unregister_device(info->i2c);
return ret;
}
@@ -796,10 +854,54 @@ static int max8997_muic_remove(struct platform_device *pdev)
return 0;
}
+static u8 max8997_muic_dumpaddr[] = {
+ MAX8997_MUIC_REG_INTMASK1,
+ MAX8997_MUIC_REG_INTMASK2,
+ MAX8997_MUIC_REG_INTMASK3,
+ MAX8997_MUIC_REG_CDETCTRL,
+ MAX8997_MUIC_REG_CONTROL1,
+ MAX8997_MUIC_REG_CONTROL2,
+ MAX8997_MUIC_REG_CONTROL3,
+};
+
+static int max8997_muic_freeze(struct device *dev)
+{
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ struct max8997_muic_info *info = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(max8997_muic_dumpaddr); i++)
+ regmap_read(info->regmap, max8997_muic_dumpaddr[i],
+ &info->reg_dump[i]);
+
+ return 0;
+}
+
+static int max8997_muic_restore(struct device *dev)
+{
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ struct max8997_muic_info *info = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(max8997_muic_dumpaddr); i++)
+ regmap_write(info->regmap, max8997_muic_dumpaddr[i],
+ info->reg_dump[i]);
+
+ return 0;
+}
+
+static const struct dev_pm_ops max8997_muic_pm = {
+ .freeze = max8997_muic_freeze,
+ .restore = max8997_muic_restore,
+};
+
static struct platform_driver max8997_muic_driver = {
.driver = {
.name = DEV_NAME,
.owner = THIS_MODULE,
+ .pm = &max8997_muic_pm,
},
.probe = max8997_muic_probe,
.remove = max8997_muic_remove,
diff --git a/drivers/input/misc/max8997_haptic.c b/drivers/input/misc/max8997_haptic.c
index d3f7079..abb44f3 100644
--- a/drivers/input/misc/max8997_haptic.c
+++ b/drivers/input/misc/max8997_haptic.c
@@ -47,6 +47,8 @@
struct max8997_haptic {
struct device *dev;
struct max8997_dev *max8997;
+ struct i2c_client *i2c;
+ struct regmap *regmap;
struct input_dev *input_dev;
struct regulator *regulator;
@@ -66,6 +68,14 @@ struct max8997_haptic {
unsigned int internal_mode_pattern;
unsigned int pattern_cycle;
unsigned int pattern_signal_period;
+
+ unsigned int reg_dump[MAX8997_HAPTIC_REG_END];
+};
+
+static const struct regmap_config max8997_haptic_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_HAPTIC_REG_END,
};
static int max8997_haptic_set_duty_cycle(struct max8997_haptic *chip)
@@ -87,19 +97,19 @@ static int max8997_haptic_set_duty_cycle(struct max8997_haptic *chip)
}
switch (chip->internal_mode_pattern) {
case 0:
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_SIGPWMDC1, duty_index);
break;
case 1:
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_SIGPWMDC2, duty_index);
break;
case 2:
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_SIGPWMDC3, duty_index);
break;
case 3:
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_SIGPWMDC4, duty_index);
break;
default:
@@ -116,51 +126,49 @@ static void max8997_haptic_configure(struct max8997_haptic *chip)
value = chip->type << MAX8997_MOTOR_TYPE_SHIFT |
chip->enabled << MAX8997_ENABLE_SHIFT |
chip->mode << MAX8997_MODE_SHIFT | chip->pwm_divisor;
- regmap_write(chip->max8997->regmap_haptic,
- MAX8997_HAPTIC_REG_CONF2, value);
+ regmap_write(chip->regmap, MAX8997_HAPTIC_REG_CONF2, value);
if (chip->mode == MAX8997_INTERNAL_MODE && chip->enabled) {
value = chip->internal_mode_pattern << MAX8997_CYCLE_SHIFT |
chip->internal_mode_pattern << MAX8997_SIG_PERIOD_SHIFT |
chip->internal_mode_pattern << MAX8997_SIG_DUTY_SHIFT |
chip->internal_mode_pattern << MAX8997_PWM_DUTY_SHIFT;
- regmap_write(chip->max8997->regmap_haptic,
- MAX8997_HAPTIC_REG_DRVCONF, value);
+ regmap_write(chip->regmap, MAX8997_HAPTIC_REG_DRVCONF, value);
switch (chip->internal_mode_pattern) {
case 0:
value = chip->pattern_cycle << 4;
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_CYCLECONF1, value);
value = chip->pattern_signal_period;
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_SIGCONF1, value);
break;
case 1:
value = chip->pattern_cycle;
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_CYCLECONF1, value);
value = chip->pattern_signal_period;
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_SIGCONF2, value);
break;
case 2:
value = chip->pattern_cycle << 4;
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_CYCLECONF2, value);
value = chip->pattern_signal_period;
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_SIGCONF3, value);
break;
case 3:
value = chip->pattern_cycle;
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_CYCLECONF2, value);
value = chip->pattern_signal_period;
- regmap_write(chip->max8997->regmap_haptic,
+ regmap_write(chip->regmap,
MAX8997_HAPTIC_REG_SIGCONF4, value);
break;
@@ -277,6 +285,17 @@ static int max8997_haptic_probe(struct platform_device *pdev)
chip->mode = haptic_pdata->mode;
chip->pwm_divisor = haptic_pdata->pwm_divisor;
+ chip->i2c = i2c_new_dummy(iodev->i2c->adapter, MAX8997_I2C_ADDR_HAPTIC);
+
+ chip->regmap = devm_regmap_init_i2c(chip->i2c,
+ &max8997_haptic_regmap_config);
+ if (IS_ERR(chip->regmap)) {
+ error = PTR_ERR(chip->regmap);
+ dev_err(chip->dev,
+ "failed to allocate register map: %d\n", error);
+ goto err_free_i2c;
+ }
+
switch (chip->mode) {
case MAX8997_INTERNAL_MODE:
chip->internal_mode_pattern =
@@ -294,7 +313,7 @@ static int max8997_haptic_probe(struct platform_device *pdev)
dev_err(&pdev->dev,
"unable to request PWM for haptic, error: %d\n",
error);
- goto err_free_mem;
+ goto err_free_i2c;
}
break;
@@ -302,7 +321,7 @@ static int max8997_haptic_probe(struct platform_device *pdev)
dev_err(&pdev->dev,
"Invalid chip mode specified (%d)\n", chip->mode);
error = -EINVAL;
- goto err_free_mem;
+ goto err_free_i2c;
}
chip->regulator = regulator_get(&pdev->dev, "inmotor");
@@ -348,6 +367,8 @@ err_put_regulator:
err_free_pwm:
if (chip->mode == MAX8997_EXTERNAL_MODE)
pwm_free(chip->pwm);
+err_free_i2c:
+ i2c_unregister_device(chip->i2c);
err_free_mem:
input_free_device(input_dev);
kfree(chip);
@@ -370,6 +391,24 @@ static int max8997_haptic_remove(struct platform_device *pdev)
return 0;
}
+static u8 max8997_haptic_dumpaddr[] = {
+ MAX8997_HAPTIC_REG_CONF1,
+ MAX8997_HAPTIC_REG_CONF2,
+ MAX8997_HAPTIC_REG_DRVCONF,
+ MAX8997_HAPTIC_REG_CYCLECONF1,
+ MAX8997_HAPTIC_REG_CYCLECONF2,
+ MAX8997_HAPTIC_REG_SIGCONF1,
+ MAX8997_HAPTIC_REG_SIGCONF2,
+ MAX8997_HAPTIC_REG_SIGCONF3,
+ MAX8997_HAPTIC_REG_SIGCONF4,
+ MAX8997_HAPTIC_REG_SIGDC1,
+ MAX8997_HAPTIC_REG_SIGDC2,
+ MAX8997_HAPTIC_REG_SIGPWMDC1,
+ MAX8997_HAPTIC_REG_SIGPWMDC2,
+ MAX8997_HAPTIC_REG_SIGPWMDC3,
+ MAX8997_HAPTIC_REG_SIGPWMDC4,
+};
+
#ifdef CONFIG_PM_SLEEP
static int max8997_haptic_suspend(struct device *dev)
{
@@ -382,7 +421,41 @@ static int max8997_haptic_suspend(struct device *dev)
}
#endif
-static SIMPLE_DEV_PM_OPS(max8997_haptic_pm_ops, max8997_haptic_suspend, NULL);
+static int max8997_haptic_freeze(struct device *dev)
+{
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ struct max8997_haptic *chip = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(max8997_haptic_dumpaddr); i++)
+ regmap_read(chip->regmap, max8997_haptic_dumpaddr[i],
+ &chip->reg_dump[i]);
+
+ return 0;
+}
+
+static int max8997_haptic_restore(struct device *dev)
+{
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ struct max8997_haptic *chip = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(max8997_haptic_dumpaddr); i++)
+ regmap_write(chip->regmap, max8997_haptic_dumpaddr[i],
+ chip->reg_dump[i]);
+
+ return 0;
+}
+
+static const struct dev_pm_ops max8997_haptic_pm = {
+#ifdef CONFIG_PM_SLEEP
+ .suspend = max8997_haptic_suspend,
+#endif
+ .freeze = max8997_haptic_freeze,
+ .restore = max8997_haptic_restore,
+};
static const struct platform_device_id max8997_haptic_id[] = {
{ "max8997-haptic", 0 },
@@ -394,7 +467,7 @@ static struct platform_driver max8997_haptic_driver = {
.driver = {
.name = "max8997-haptic",
.owner = THIS_MODULE,
- .pm = &max8997_haptic_pm_ops,
+ .pm = &max8997_haptic_pm,
},
.probe = max8997_haptic_probe,
.remove = max8997_haptic_remove,
diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
index 9b6edfa..d36066d 100644
--- a/drivers/mfd/max8997.c
+++ b/drivers/mfd/max8997.c
@@ -35,12 +35,6 @@
#include <linux/mfd/max8997-private.h>
#include <linux/regmap.h>
-#define I2C_ADDR_PMIC (0xCC >> 1)
-#define I2C_ADDR_MUIC (0x4A >> 1)
-#define I2C_ADDR_BATTERY (0x6C >> 1)
-#define I2C_ADDR_RTC (0x0C >> 1)
-#define I2C_ADDR_HAPTIC (0x90 >> 1)
-
static const struct mfd_cell max8997_devs[] = {
{ .name = "max8997-pmic", },
{ .name = "max8997-rtc", },
@@ -107,48 +101,6 @@ static const struct regmap_irq_chip max8997_irq_chip = {
.num_irqs = ARRAY_SIZE(max8997_irqs),
};
-static const struct regmap_config max8997_regmap_rtc_config = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = MAX8997_RTC_REG_END,
-};
-
-static const struct regmap_config max8997_regmap_haptic_config = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = MAX8997_HAPTIC_REG_END,
-};
-
-static const struct regmap_config max8997_regmap_muic_config = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = MAX8997_MUIC_REG_END,
-};
-
-static const struct regmap_irq max8997_irqs_muic[] = {
- /* MUIC_INT1 interrupts */
- { .reg_offset = 0, .mask = MUIC_INT1_ADC_MASK, },
- { .reg_offset = 0, .mask = MUIC_INT1_ADCLow_MASK, },
- { .reg_offset = 0, .mask = MUIC_INT1_ADCError_MASK, },
- /* MUIC_INT2 interrupts */
- { .reg_offset = 1, .mask = MUIC_INT2_ChgTyp_MASK, },
- { .reg_offset = 1, .mask = MUIC_INT2_ChgDetRun_MASK, },
- { .reg_offset = 1, .mask = MUIC_INT2_DCDTmr_MASK, },
- { .reg_offset = 1, .mask = MUIC_INT2_DBChg_MASK, },
- { .reg_offset = 1, .mask = MUIC_INT2_VBVolt_MASK, },
- /* MUIC_INT3 interrupts */
- { .reg_offset = 2, .mask = MUIC_INT3_OVP_MASK, },
-};
-
-static const struct regmap_irq_chip max8997_irq_chip_muic = {
- .name = "max8997-muic",
- .status_base = MAX8997_MUIC_REG_INT1,
- .mask_base = MAX8997_MUIC_REG_INTMASK1,
- .mask_invert = true,
- .num_regs = 3,
- .irqs = max8997_irqs_muic,
- .num_irqs = ARRAY_SIZE(max8997_irqs_muic),
-};
/*
* Only the common platform data elements for max8997 are parsed here from the
@@ -224,15 +176,6 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
mutex_init(&max8997->iolock);
- max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
- i2c_set_clientdata(max8997->rtc, max8997);
-
- max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
- i2c_set_clientdata(max8997->haptic, max8997);
-
- max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
- i2c_set_clientdata(max8997->muic, max8997);
-
max8997->regmap = devm_regmap_init_i2c(i2c, &max8997_regmap_config);
if (IS_ERR(max8997->regmap)) {
ret = PTR_ERR(max8997->regmap);
@@ -250,43 +193,10 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
return ret;
}
- max8997->regmap_rtc = devm_regmap_init_i2c(max8997->rtc,
- &max8997_regmap_rtc_config);
- if (IS_ERR(max8997->regmap_rtc)) {
- ret = PTR_ERR(max8997->regmap_rtc);
- dev_err(max8997->dev,
- "failed to allocate register map: %d\n", ret);
- goto err_regmap;
- }
-
- max8997->regmap_haptic = devm_regmap_init_i2c(max8997->haptic,
- &max8997_regmap_haptic_config);
- if (IS_ERR(max8997->regmap_haptic)) {
- ret = PTR_ERR(max8997->regmap_haptic);
- dev_err(max8997->dev,
- "failed to allocate register map: %d\n", ret);
- goto err_regmap;
- }
-
- max8997->regmap_muic = devm_regmap_init_i2c(max8997->muic,
- &max8997_regmap_muic_config);
- if (IS_ERR(max8997->regmap_muic)) {
- ret = PTR_ERR(max8997->regmap_muic);
- dev_err(max8997->dev,
- "failed to allocate register map: %d\n", ret);
- goto err_regmap;
- }
-
- ret = regmap_add_irq_chip(max8997->regmap_muic, max8997->irq,
- IRQF_ONESHOT | IRQF_SHARED |
- IRQF_TRIGGER_FALLING, 0,
- &max8997_irq_chip_muic,
- &max8997->irq_data_muic);
if (ret) {
dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
return ret;
}
-
pm_runtime_set_active(max8997->dev);
ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
@@ -309,10 +219,6 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
err_mfd:
mfd_remove_devices(max8997->dev);
-err_regmap:
- i2c_unregister_device(max8997->muic);
- i2c_unregister_device(max8997->haptic);
- i2c_unregister_device(max8997->rtc);
return ret;
}
@@ -321,9 +227,6 @@ static int max8997_i2c_remove(struct i2c_client *i2c)
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
mfd_remove_devices(max8997->dev);
- i2c_unregister_device(max8997->muic);
- i2c_unregister_device(max8997->haptic);
- i2c_unregister_device(max8997->rtc);
return 0;
}
@@ -460,34 +363,6 @@ static u8 max8997_dumpaddr_pmic[] = {
MAX8997_REG_DVSOKTIMER5,
};
-static u8 max8997_dumpaddr_muic[] = {
- MAX8997_MUIC_REG_INTMASK1,
- MAX8997_MUIC_REG_INTMASK2,
- MAX8997_MUIC_REG_INTMASK3,
- MAX8997_MUIC_REG_CDETCTRL,
- MAX8997_MUIC_REG_CONTROL1,
- MAX8997_MUIC_REG_CONTROL2,
- MAX8997_MUIC_REG_CONTROL3,
-};
-
-static u8 max8997_dumpaddr_haptic[] = {
- MAX8997_HAPTIC_REG_CONF1,
- MAX8997_HAPTIC_REG_CONF2,
- MAX8997_HAPTIC_REG_DRVCONF,
- MAX8997_HAPTIC_REG_CYCLECONF1,
- MAX8997_HAPTIC_REG_CYCLECONF2,
- MAX8997_HAPTIC_REG_SIGCONF1,
- MAX8997_HAPTIC_REG_SIGCONF2,
- MAX8997_HAPTIC_REG_SIGCONF3,
- MAX8997_HAPTIC_REG_SIGCONF4,
- MAX8997_HAPTIC_REG_SIGDC1,
- MAX8997_HAPTIC_REG_SIGDC2,
- MAX8997_HAPTIC_REG_SIGPWMDC1,
- MAX8997_HAPTIC_REG_SIGPWMDC2,
- MAX8997_HAPTIC_REG_SIGPWMDC3,
- MAX8997_HAPTIC_REG_SIGPWMDC4,
-};
-
static int max8997_freeze(struct device *dev)
{
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
@@ -498,15 +373,6 @@ static int max8997_freeze(struct device *dev)
regmap_read(max8997->regmap, max8997_dumpaddr_pmic[i],
&max8997->reg_dump[i]);
- for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
- regmap_read(max8997->regmap_muic, max8997_dumpaddr_muic[i],
- &max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
-
- for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
- regmap_read(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
- &max8997->reg_dump[i + MAX8997_REG_PMIC_END +
- MAX8997_MUIC_REG_END]);
-
return 0;
}
@@ -520,15 +386,6 @@ static int max8997_restore(struct device *dev)
regmap_write(max8997->regmap, max8997_dumpaddr_pmic[i],
max8997->reg_dump[i]);
- for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
- regmap_write(max8997->regmap_muic, max8997_dumpaddr_muic[i],
- max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
-
- for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
- regmap_write(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
- max8997->reg_dump[i + MAX8997_REG_PMIC_END +
- MAX8997_MUIC_REG_END]);
-
return 0;
}
diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
index 22769ea..1786da4 100644
--- a/drivers/rtc/rtc-max8997.c
+++ b/drivers/rtc/rtc-max8997.c
@@ -69,12 +69,20 @@ enum {
struct max8997_rtc_info {
struct device *dev;
struct max8997_dev *max8997;
+ struct i2c_client *i2c;
+ struct regmap *regmap;
struct rtc_device *rtc_dev;
struct mutex lock;
int virq;
int rtc_24hr_mode;
};
+static const struct regmap_config max8997_rtc_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_RTC_REG_END,
+};
+
static void max8997_rtc_data_to_tm(u8 *data, struct rtc_time *tm,
int rtc_24hr_mode)
{
@@ -118,8 +126,7 @@ static inline int max8997_rtc_set_update_reg(struct max8997_rtc_info *info)
{
int ret;
- ret = regmap_write(info->max8997->regmap_rtc,
- MAX8997_RTC_UPDATE1, RTC_UDR_MASK);
+ ret = regmap_write(info->regmap, MAX8997_RTC_UPDATE1, RTC_UDR_MASK);
if (ret < 0)
dev_err(info->dev, "%s: fail to write update reg(%d)\n",
__func__, ret);
@@ -140,7 +147,7 @@ static int max8997_rtc_read_time(struct device *dev, struct rtc_time *tm)
int ret;
mutex_lock(&info->lock);
- ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ ret = regmap_bulk_read(info->regmap,
MAX8997_RTC_SEC, data, RTC_NR_TIME);
mutex_unlock(&info->lock);
@@ -167,7 +174,7 @@ static int max8997_rtc_set_time(struct device *dev, struct rtc_time *tm)
mutex_lock(&info->lock);
- ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ ret = regmap_bulk_write(info->regmap,
MAX8997_RTC_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write time reg(%d)\n", __func__,
@@ -190,7 +197,7 @@ static int max8997_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
mutex_lock(&info->lock);
- ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ ret = regmap_bulk_read(info->regmap,
MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s:%d fail to read alarm reg(%d)\n",
@@ -209,8 +216,7 @@ static int max8997_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
}
alrm->pending = 0;
- ret = regmap_read(info->max8997->regmap_rtc,
- MAX8997_REG_STATUS1, &val);
+ ret = regmap_read(info->regmap, MAX8997_REG_STATUS1, &val);
if (ret < 0) {
dev_err(info->dev, "%s:%d fail to read status1 reg(%d)\n",
__func__, __LINE__, ret);
@@ -233,7 +239,7 @@ static int max8997_rtc_stop_alarm(struct max8997_rtc_info *info)
if (!mutex_is_locked(&info->lock))
dev_warn(info->dev, "%s: should have mutex locked\n", __func__);
- ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ ret = regmap_bulk_read(info->regmap,
MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
@@ -244,7 +250,7 @@ static int max8997_rtc_stop_alarm(struct max8997_rtc_info *info)
for (i = 0; i < RTC_NR_TIME; i++)
data[i] &= ~ALARM_ENABLE_MASK;
- ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ ret = regmap_bulk_write(info->regmap,
MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
@@ -265,7 +271,7 @@ static int max8997_rtc_start_alarm(struct max8997_rtc_info *info)
if (!mutex_is_locked(&info->lock))
dev_warn(info->dev, "%s: should have mutex locked\n", __func__);
- ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ ret = regmap_bulk_read(info->regmap,
MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
@@ -284,7 +290,7 @@ static int max8997_rtc_start_alarm(struct max8997_rtc_info *info)
if (data[RTC_DATE] & 0x1f)
data[RTC_DATE] |= (1 << ALARM_ENABLE_SHIFT);
- ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ ret = regmap_bulk_write(info->regmap,
MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
@@ -316,7 +322,7 @@ static int max8997_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
if (ret < 0)
goto out;
- ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ ret = regmap_bulk_write(info->regmap,
MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
@@ -388,7 +394,7 @@ static void max8997_rtc_enable_wtsr(struct max8997_rtc_info *info, bool enable)
dev_info(info->dev, "%s: %s WTSR\n", __func__,
enable ? "enable" : "disable");
- ret = regmap_update_bits(info->max8997->regmap_rtc,
+ ret = regmap_update_bits(info->regmap,
MAX8997_RTC_WTSR_SMPL, mask, val);
if (ret < 0) {
dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n",
@@ -417,7 +423,7 @@ static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
dev_info(info->dev, "%s: %s SMPL\n", __func__,
enable ? "enable" : "disable");
- ret = regmap_update_bits(info->max8997->regmap_rtc,
+ ret = regmap_update_bits(info->regmap,
MAX8997_RTC_WTSR_SMPL, mask, val);
if (ret < 0) {
dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n",
@@ -428,8 +434,7 @@ static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
max8997_rtc_set_update_reg(info);
val = 0;
- regmap_read(info->max8997->regmap_rtc,
- MAX8997_RTC_WTSR_SMPL, &val);
+ regmap_read(info->regmap, MAX8997_RTC_WTSR_SMPL, &val);
pr_info("%s: WTSR_SMPL(0x%02x)\n", __func__, val);
}
@@ -444,7 +449,7 @@ static int max8997_rtc_init_reg(struct max8997_rtc_info *info)
info->rtc_24hr_mode = 1;
- ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ ret = regmap_bulk_write(info->regmap,
MAX8997_RTC_CTRLMASK, data, 2);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",
@@ -471,13 +476,24 @@ static int max8997_rtc_probe(struct platform_device *pdev)
info->dev = &pdev->dev;
info->max8997 = max8997;
+ info->i2c = i2c_new_dummy(max8997->i2c->adapter, MAX8997_I2C_ADDR_RTC);
+
+ info->regmap = devm_regmap_init_i2c(info->i2c,
+ &max8997_rtc_regmap_config);
+ if (IS_ERR(info->regmap)) {
+ ret = PTR_ERR(info->regmap);
+ dev_err(info->dev,
+ "failed to allocate register map: %d\n", ret);
+ goto err_regmap;
+ }
+
platform_set_drvdata(pdev, info);
ret = max8997_rtc_init_reg(info);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to initialize RTC reg:%d\n", ret);
- return ret;
+ goto err_regmap;
}
max8997_rtc_enable_wtsr(info, true);
@@ -491,28 +507,41 @@ static int max8997_rtc_probe(struct platform_device *pdev)
if (IS_ERR(info->rtc_dev)) {
ret = PTR_ERR(info->rtc_dev);
dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
- return ret;
+ goto err_regmap;
}
virq = regmap_irq_get_virq(max8997->irq_data, MAX8997_PMICIRQ_RTCA1);
if (!virq) {
dev_err(&pdev->dev, "Failed to create mapping alarm IRQ\n");
ret = -ENXIO;
- goto err_out;
+ goto err_regmap;
}
info->virq = virq;
ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
max8997_rtc_alarm_irq, 0,
"rtc-alarm0", info);
- if (ret < 0)
+ if (ret < 0) {
dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
info->virq, ret);
+ goto err_regmap;
+ }
+
+ return ret;
-err_out:
+err_regmap:
+ i2c_unregister_device(info->i2c);
return ret;
}
+static int max8997_rtc_remove(struct platform_device *pdev)
+{
+ struct max8997_rtc_info *info = platform_get_drvdata(pdev);
+ i2c_unregister_device(info->i2c);
+
+ return 0;
+}
+
static void max8997_rtc_shutdown(struct platform_device *pdev)
{
struct max8997_rtc_info *info = platform_get_drvdata(pdev);
@@ -532,6 +561,7 @@ static struct platform_driver max8997_rtc_driver = {
.owner = THIS_MODULE,
},
.probe = max8997_rtc_probe,
+ .remove = max8997_rtc_remove,
.shutdown = max8997_rtc_shutdown,
.id_table = rtc_id,
};
diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
index af2f0aa..612a295 100644
--- a/include/linux/mfd/max8997-private.h
+++ b/include/linux/mfd/max8997-private.h
@@ -26,6 +26,13 @@
#include <linux/export.h>
#include <linux/irqdomain.h>
+#define MAX8997_I2C_ADDR_PMIC (0xCC >> 1)
+#define MAX8997_I2C_ADDR_MUIC (0x4A >> 1)
+#define MAX8997_I2C_ADDR_BATTERY (0x6C >> 1)
+#define MAX8997_I2C_ADDR_RTC (0x0C >> 1)
+#define MAX8997_I2C_ADDR_HAPTIC (0x90 >> 1)
+
+
#define MAX8997_REG_INVALID (0xff)
enum max8997_pmic_reg {
@@ -430,21 +437,14 @@ struct max8997_dev {
struct device *dev;
struct max8997_platform_data *pdata;
struct i2c_client *i2c; /* 0xcc / PMIC, Battery Control, and FLASH */
- struct i2c_client *rtc; /* slave addr 0x0c */
- struct i2c_client *haptic; /* slave addr 0x90 */
- struct i2c_client *muic; /* slave addr 0x4a */
struct mutex iolock;
unsigned long type;
struct platform_device *battery; /* battery control (not fuel gauge) */
struct regmap *regmap;
- struct regmap *regmap_rtc;
- struct regmap *regmap_haptic;
- struct regmap *regmap_muic;
struct regmap_irq_chip_data *irq_data;
- struct regmap_irq_chip_data *irq_data_muic;
int irq;
int ono;
struct mutex irqlock;
--
1.7.9.5
^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH 1/3] mfd: max8997: use regmap to access registers
2014-03-11 13:58 ` [PATCH 1/3] mfd: max8997: use regmap to access registers Robert Baldyga
@ 2014-03-11 14:32 ` Krzysztof Kozlowski
2014-03-11 14:59 ` Robert Baldyga
0 siblings, 1 reply; 9+ messages in thread
From: Krzysztof Kozlowski @ 2014-03-11 14:32 UTC (permalink / raw)
To: Robert Baldyga
Cc: sameo, lee.jones, myungjoo.ham, cw00.choi, dmitry.torokhov,
cooloney, rpurdie, dbaryshkov, dwmw2, lgirdwood, broonie, a.zummo,
paul.gortmaker, linux-kernel, linux-input, linux-leds, rtc-linux,
m.szyprowski
On Tue, 2014-03-11 at 14:58 +0100, Robert Baldyga wrote:
> This patch modifies max8997 driver and each associated function driver,
> to use regmap instead of operating directly on i2c bus. It will allow to
> simplify IRQ handling using regmap-irq.
>
> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
> ---
> drivers/extcon/extcon-max8997.c | 31 ++++----
> drivers/input/misc/max8997_haptic.c | 34 +++++----
> drivers/leds/leds-max8997.c | 13 ++--
> drivers/mfd/max8997-irq.c | 64 ++++++----------
> drivers/mfd/max8997.c | 143 ++++++++++++++++-------------------
> drivers/power/max8997_charger.c | 33 ++++----
> drivers/regulator/max8997.c | 87 ++++++++++-----------
> drivers/rtc/rtc-max8997.c | 56 ++++++++------
> include/linux/mfd/max8997-private.h | 17 ++---
> 9 files changed, 229 insertions(+), 249 deletions(-)
I think you should also add "select REGMAP_I2C" to the main driver
config secion (drivers/mfd/Kconfig).
(...)
> diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c
> index 43fa614..656d03b 100644
> --- a/drivers/mfd/max8997-irq.c
> +++ b/drivers/mfd/max8997-irq.c
> @@ -26,6 +26,7 @@
> #include <linux/interrupt.h>
> #include <linux/mfd/max8997.h>
> #include <linux/mfd/max8997-private.h>
> +#include <linux/regmap.h>
>
> static const u8 max8997_mask_reg[] = {
> [PMIC_INT1] = MAX8997_REG_INT1MSK,
> @@ -41,25 +42,6 @@ static const u8 max8997_mask_reg[] = {
> [FLASH_STATUS] = MAX8997_REG_INVALID,
> };
>
> -static struct i2c_client *get_i2c(struct max8997_dev *max8997,
> - enum max8997_irq_source src)
> -{
> - switch (src) {
> - case PMIC_INT1 ... PMIC_INT4:
> - return max8997->i2c;
> - case FUEL_GAUGE:
> - return NULL;
> - case MUIC_INT1 ... MUIC_INT3:
> - return max8997->muic;
> - case GPIO_LOW ... GPIO_HI:
> - return max8997->i2c;
> - case FLASH_STATUS:
> - return max8997->i2c;
> - default:
> - return ERR_PTR(-EINVAL);
> - }
> -}
> -
> struct max8997_irq_data {
> int mask;
> enum max8997_irq_source group;
> @@ -124,15 +106,20 @@ static void max8997_irq_sync_unlock(struct irq_data *data)
> int i;
>
> for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
> + struct regmap *map;
> u8 mask_reg = max8997_mask_reg[i];
> - struct i2c_client *i2c = get_i2c(max8997, i);
> +
> + if (i >= MUIC_INT1 && i <= MUIC_INT3)
> + map = max8997->regmap_muic;
> + else
> + map = max8997->regmap;
>
> if (mask_reg == MAX8997_REG_INVALID ||
> - IS_ERR_OR_NULL(i2c))
> + IS_ERR_OR_NULL(map))
> continue;
> max8997->irq_masks_cache[i] = max8997->irq_masks_cur[i];
>
> - max8997_write_reg(i2c, max8997_mask_reg[i],
> + regmap_write(map, max8997_mask_reg[i],
> max8997->irq_masks_cur[i]);
> }
>
> @@ -180,12 +167,12 @@ static struct irq_chip max8997_irq_chip = {
> static irqreturn_t max8997_irq_thread(int irq, void *data)
> {
> struct max8997_dev *max8997 = data;
> - u8 irq_reg[MAX8997_IRQ_GROUP_NR] = {};
> - u8 irq_src;
> + unsigned int irq_reg[MAX8997_IRQ_GROUP_NR] = {};
> + unsigned int irq_src;
> int ret;
> int i, cur_irq;
>
> - ret = max8997_read_reg(max8997->i2c, MAX8997_REG_INTSRC, &irq_src);
> + ret = regmap_read(max8997->regmap, MAX8997_REG_INTSRC, &irq_src);
> if (ret < 0) {
> dev_err(max8997->dev, "Failed to read interrupt source: %d\n",
> ret);
> @@ -194,8 +181,9 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
>
> if (irq_src & MAX8997_IRQSRC_PMIC) {
> /* PMIC INT1 ~ INT4 */
> - max8997_bulk_read(max8997->i2c, MAX8997_REG_INT1, 4,
> - &irq_reg[PMIC_INT1]);
> + for (i = 0; i < 4; ++i)
> + regmap_read(max8997->regmap,
> + MAX8997_REG_INT1+i, &irq_reg[PMIC_INT1+i]);
Can't you use here one bulk read instead of 4xregmap_read()?
> }
> if (irq_src & MAX8997_IRQSRC_FUELGAUGE) {
> /*
> @@ -215,8 +203,9 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
> }
> if (irq_src & MAX8997_IRQSRC_MUIC) {
> /* MUIC INT1 ~ INT3 */
> - max8997_bulk_read(max8997->muic, MAX8997_MUIC_REG_INT1, 3,
> - &irq_reg[MUIC_INT1]);
> + for (i = 0; i < 3; ++i)
> + regmap_read(max8997->regmap_muic,
> + MAX8997_MUIC_REG_INT1+i, &irq_reg[MUIC_INT1+i]);
Same as above - bulk.
> }
> if (irq_src & MAX8997_IRQSRC_GPIO) {
> /* GPIO Interrupt */
> @@ -225,8 +214,8 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
> irq_reg[GPIO_LOW] = 0;
> irq_reg[GPIO_HI] = 0;
>
> - max8997_bulk_read(max8997->i2c, MAX8997_REG_GPIOCNTL1,
> - MAX8997_NUM_GPIO, gpio_info);
> + regmap_bulk_read(max8997->regmap, MAX8997_REG_GPIOCNTL1,
> + gpio_info, MAX8997_NUM_GPIO);
> for (i = 0; i < MAX8997_NUM_GPIO; i++) {
> bool interrupt = false;
>
> @@ -260,7 +249,7 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
> }
> if (irq_src & MAX8997_IRQSRC_FLASH) {
> /* Flash Status Interrupt */
> - ret = max8997_read_reg(max8997->i2c, MAX8997_REG_FLASHSTATUS,
> + ret = regmap_read(max8997->regmap, MAX8997_REG_FLASHSTATUS,
> &irq_reg[FLASH_STATUS]);
> }
>
> @@ -312,7 +301,7 @@ int max8997_irq_init(struct max8997_dev *max8997)
> struct irq_domain *domain;
> int i;
> int ret;
> - u8 val;
> + unsigned int val;
>
> if (!max8997->irq) {
> dev_warn(max8997->dev, "No interrupt specified.\n");
> @@ -323,22 +312,19 @@ int max8997_irq_init(struct max8997_dev *max8997)
>
> /* Mask individual interrupt sources */
> for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
> - struct i2c_client *i2c;
> -
> max8997->irq_masks_cur[i] = 0xff;
> max8997->irq_masks_cache[i] = 0xff;
> - i2c = get_i2c(max8997, i);
>
> - if (IS_ERR_OR_NULL(i2c))
> + if (IS_ERR_OR_NULL(max8997->regmap))
> continue;
> if (max8997_mask_reg[i] == MAX8997_REG_INVALID)
> continue;
>
> - max8997_write_reg(i2c, max8997_mask_reg[i], 0xff);
> + regmap_write(max8997->regmap, max8997_mask_reg[i], 0xff);
> }
>
> for (i = 0; i < MAX8997_NUM_GPIO; i++) {
> - max8997->gpio_status[i] = (max8997_read_reg(max8997->i2c,
> + max8997->gpio_status[i] = (regmap_read(max8997->regmap,
> MAX8997_REG_GPIOCNTL1 + i,
> &val)
> & MAX8997_GPIO_DATA_MASK) ?
> diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
> index 5adede0..ca6f310 100644
> --- a/drivers/mfd/max8997.c
> +++ b/drivers/mfd/max8997.c
> @@ -33,6 +33,7 @@
> #include <linux/mfd/core.h>
> #include <linux/mfd/max8997.h>
> #include <linux/mfd/max8997-private.h>
> +#include <linux/regmap.h>
>
> #define I2C_ADDR_PMIC (0xCC >> 1)
> #define I2C_ADDR_MUIC (0x4A >> 1)
> @@ -57,81 +58,29 @@ static struct of_device_id max8997_pmic_dt_match[] = {
> };
> #endif
>
> -int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
> -{
> - struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
> - int ret;
> -
> - mutex_lock(&max8997->iolock);
> - ret = i2c_smbus_read_byte_data(i2c, reg);
> - mutex_unlock(&max8997->iolock);
> - if (ret < 0)
> - return ret;
> -
> - ret &= 0xff;
> - *dest = ret;
> - return 0;
> -}
> -EXPORT_SYMBOL_GPL(max8997_read_reg);
> -
> -int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
> -{
> - struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
> - int ret;
> -
> - mutex_lock(&max8997->iolock);
> - ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
> - mutex_unlock(&max8997->iolock);
> - if (ret < 0)
> - return ret;
> -
> - return 0;
> -}
> -EXPORT_SYMBOL_GPL(max8997_bulk_read);
> -
> -int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
> -{
> - struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
> - int ret;
> -
> - mutex_lock(&max8997->iolock);
> - ret = i2c_smbus_write_byte_data(i2c, reg, value);
> - mutex_unlock(&max8997->iolock);
> - return ret;
> -}
> -EXPORT_SYMBOL_GPL(max8997_write_reg);
> -
> -int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
> -{
> - struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
> - int ret;
> +static const struct regmap_config max8997_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = MAX8997_REG_PMIC_END,
> +};
>
> - mutex_lock(&max8997->iolock);
> - ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
> - mutex_unlock(&max8997->iolock);
> - if (ret < 0)
> - return ret;
> +static const struct regmap_config max8997_regmap_rtc_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = MAX8997_RTC_REG_END,
> +};
>
> - return 0;
> -}
> -EXPORT_SYMBOL_GPL(max8997_bulk_write);
> +static const struct regmap_config max8997_regmap_haptic_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = MAX8997_HAPTIC_REG_END,
> +};
>
> -int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
> -{
> - struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
> - int ret;
> -
> - mutex_lock(&max8997->iolock);
> - ret = i2c_smbus_read_byte_data(i2c, reg);
> - if (ret >= 0) {
> - u8 old_val = ret & 0xff;
> - u8 new_val = (val & mask) | (old_val & (~mask));
> - ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
> - }
> - mutex_unlock(&max8997->iolock);
> - return ret;
> -}
> -EXPORT_SYMBOL_GPL(max8997_update_reg);
> +static const struct regmap_config max8997_regmap_muic_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = MAX8997_MUIC_REG_END,
> +};
>
> /*
> * Only the common platform data elements for max8997 are parsed here from the
> @@ -209,11 +158,48 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
>
> max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
> i2c_set_clientdata(max8997->rtc, max8997);
> +
> max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
> i2c_set_clientdata(max8997->haptic, max8997);
> +
> max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
> i2c_set_clientdata(max8997->muic, max8997);
>
> + max8997->regmap = devm_regmap_init_i2c(i2c, &max8997_regmap_config);
> + if (IS_ERR(max8997->regmap)) {
> + ret = PTR_ERR(max8997->regmap);
> + dev_err(max8997->dev,
> + "failed to allocate register map: %d\n", ret);
> + return ret;
> + }
> +
> + max8997->regmap_rtc = devm_regmap_init_i2c(max8997->rtc,
> + &max8997_regmap_rtc_config);
> + if (IS_ERR(max8997->regmap_rtc)) {
> + ret = PTR_ERR(max8997->regmap_rtc);
> + dev_err(max8997->dev,
> + "failed to allocate register map: %d\n", ret);
> + goto err_regmap;
> + }
> +
> + max8997->regmap_haptic = devm_regmap_init_i2c(max8997->haptic,
> + &max8997_regmap_haptic_config);
> + if (IS_ERR(max8997->regmap_haptic)) {
> + ret = PTR_ERR(max8997->regmap_haptic);
> + dev_err(max8997->dev,
> + "failed to allocate register map: %d\n", ret);
> + goto err_regmap;
> + }
> +
> + max8997->regmap_muic = devm_regmap_init_i2c(max8997->muic,
> + &max8997_regmap_muic_config);
> + if (IS_ERR(max8997->regmap_muic)) {
> + ret = PTR_ERR(max8997->regmap_muic);
> + dev_err(max8997->dev,
> + "failed to allocate register map: %d\n", ret);
> + goto err_regmap;
> + }
> +
> pm_runtime_set_active(max8997->dev);
>
> max8997_irq_init(max8997);
> @@ -238,6 +224,7 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
>
> err_mfd:
> mfd_remove_devices(max8997->dev);
> +err_regmap:
> i2c_unregister_device(max8997->muic);
> i2c_unregister_device(max8997->haptic);
> i2c_unregister_device(max8997->rtc);
> @@ -423,15 +410,15 @@ static int max8997_freeze(struct device *dev)
> int i;
>
> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
> - max8997_read_reg(i2c, max8997_dumpaddr_pmic[i],
> + regmap_read(max8997->regmap, max8997_dumpaddr_pmic[i],
> &max8997->reg_dump[i]);
>
> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
> - max8997_read_reg(i2c, max8997_dumpaddr_muic[i],
> + regmap_read(max8997->regmap_muic, max8997_dumpaddr_muic[i],
> &max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
>
> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
> - max8997_read_reg(i2c, max8997_dumpaddr_haptic[i],
> + regmap_read(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
> &max8997->reg_dump[i + MAX8997_REG_PMIC_END +
> MAX8997_MUIC_REG_END]);
Code looks good. Idea for another patch: could bulk read be used here?
At least some of registers have continuous addresses so maybe its worth
to read them at once?
>
> @@ -445,15 +432,15 @@ static int max8997_restore(struct device *dev)
> int i;
>
> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
> - max8997_write_reg(i2c, max8997_dumpaddr_pmic[i],
> + regmap_write(max8997->regmap, max8997_dumpaddr_pmic[i],
> max8997->reg_dump[i]);
>
> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
> - max8997_write_reg(i2c, max8997_dumpaddr_muic[i],
> + regmap_write(max8997->regmap_muic, max8997_dumpaddr_muic[i],
> max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
>
> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
> - max8997_write_reg(i2c, max8997_dumpaddr_haptic[i],
> + regmap_write(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
> max8997->reg_dump[i + MAX8997_REG_PMIC_END +
> MAX8997_MUIC_REG_END]);
As above - bulk write (if you still would like to improve things in this
driver)?
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 2/3] mfd: max8997: handle IRQs using regmap
2014-03-11 13:58 ` [PATCH 2/3] mfd: max8997: handle IRQs using regmap Robert Baldyga
@ 2014-03-11 14:43 ` Krzysztof Kozlowski
0 siblings, 0 replies; 9+ messages in thread
From: Krzysztof Kozlowski @ 2014-03-11 14:43 UTC (permalink / raw)
To: Robert Baldyga
Cc: sameo, lee.jones, myungjoo.ham, cw00.choi, dmitry.torokhov,
cooloney, rpurdie, dbaryshkov, dwmw2, lgirdwood, broonie, a.zummo,
paul.gortmaker, linux-kernel, linux-input, linux-leds, rtc-linux,
m.szyprowski
On Tue, 2014-03-11 at 14:58 +0100, Robert Baldyga wrote:
> This patch modifies mfd driver to use regmap for handling interrupts.
> It allows to simplify irq handling process. This modifications needed
> to make small changes in function drivers, which use interrupts.
>
> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
> ---
> drivers/extcon/extcon-max8997.c | 3 +-
> drivers/mfd/Makefile | 2 +-
> drivers/mfd/max8997-irq.c | 373 -----------------------------------
> drivers/mfd/max8997.c | 91 ++++++++-
> drivers/rtc/rtc-max8997.c | 2 +-
> include/linux/mfd/max8997-private.h | 63 +++++-
> 6 files changed, 147 insertions(+), 387 deletions(-)
> delete mode 100644 drivers/mfd/max8997-irq.c
Add "select REGMAP_IRQ" in Kconfig.
(...)
> diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
> index ca6f310..9b6edfa 100644
> --- a/drivers/mfd/max8997.c
> +++ b/drivers/mfd/max8997.c
> @@ -64,6 +64,49 @@ static const struct regmap_config max8997_regmap_config = {
> .max_register = MAX8997_REG_PMIC_END,
> };
>
> +static const struct regmap_irq max8997_irqs[] = {
> + /* PMIC_INT1 interrupts */
> + { .reg_offset = 0, .mask = PMIC_INT1_PWRONR_MASK, },
> + { .reg_offset = 0, .mask = PMIC_INT1_PWRONF_MASK, },
> + { .reg_offset = 0, .mask = PMIC_INT1_PWRON1SEC_MASK, },
> + { .reg_offset = 0, .mask = PMIC_INT1_JIGONR_MASK, },
> + { .reg_offset = 0, .mask = PMIC_INT1_JIGONF_MASK, },
> + { .reg_offset = 0, .mask = PMIC_INT1_LOWBAT2_MASK, },
> + { .reg_offset = 0, .mask = PMIC_INT1_LOWBAT1_MASK, },
> + /* PMIC_INT2 interrupts */
> + { .reg_offset = 1, .mask = PMIC_INT2_JIGR_MASK, },
> + { .reg_offset = 1, .mask = PMIC_INT2_JIGF_MASK, },
> + { .reg_offset = 1, .mask = PMIC_INT2_MR_MASK, },
> + { .reg_offset = 1, .mask = PMIC_INT2_DVS1OK_MASK, },
> + { .reg_offset = 1, .mask = PMIC_INT2_DVS2OK_MASK, },
> + { .reg_offset = 1, .mask = PMIC_INT2_DVS3OK_MASK, },
> + { .reg_offset = 1, .mask = PMIC_INT2_DVS4OK_MASK, },
> + /* PMIC_INT3 interrupts */
> + { .reg_offset = 2, .mask = PMIC_INT3_CHGINS_MASK, },
> + { .reg_offset = 2, .mask = PMIC_INT3_CHGRM_MASK, },
> + { .reg_offset = 2, .mask = PMIC_INT3_DCINOVP_MASK, },
> + { .reg_offset = 2, .mask = PMIC_INT3_TOPOFFR_MASK, },
> + { .reg_offset = 2, .mask = PMIC_INT3_CHGRSTF_MASK, },
> + { .reg_offset = 2, .mask = PMIC_INT3_MBCHGTMEXPD_MASK, },
> + /* PMIC_INT4 interrupts */
> + { .reg_offset = 3, .mask = PMIC_INT4_RTC60S_MASK, },
> + { .reg_offset = 3, .mask = PMIC_INT4_RTCA1_MASK, },
> + { .reg_offset = 3, .mask = PMIC_INT4_RTCA2_MASK, },
> + { .reg_offset = 3, .mask = PMIC_INT4_SMPL_INT_MASK, },
> + { .reg_offset = 3, .mask = PMIC_INT4_RTC1S_MASK, },
> + { .reg_offset = 3, .mask = PMIC_INT4_WTSR_MASK, },
> +};
> +
> +static const struct regmap_irq_chip max8997_irq_chip = {
> + .name = "max8997",
> + .status_base = MAX8997_REG_INT1,
> + .mask_base = MAX8997_REG_INT1MSK,
> + .mask_invert = false,
> + .num_regs = 4,
> + .irqs = max8997_irqs,
> + .num_irqs = ARRAY_SIZE(max8997_irqs),
> +};
> +
> static const struct regmap_config max8997_regmap_rtc_config = {
> .reg_bits = 8,
> .val_bits = 8,
> @@ -82,6 +125,31 @@ static const struct regmap_config max8997_regmap_muic_config = {
> .max_register = MAX8997_MUIC_REG_END,
> };
>
> +static const struct regmap_irq max8997_irqs_muic[] = {
> + /* MUIC_INT1 interrupts */
> + { .reg_offset = 0, .mask = MUIC_INT1_ADC_MASK, },
> + { .reg_offset = 0, .mask = MUIC_INT1_ADCLow_MASK, },
> + { .reg_offset = 0, .mask = MUIC_INT1_ADCError_MASK, },
> + /* MUIC_INT2 interrupts */
> + { .reg_offset = 1, .mask = MUIC_INT2_ChgTyp_MASK, },
> + { .reg_offset = 1, .mask = MUIC_INT2_ChgDetRun_MASK, },
> + { .reg_offset = 1, .mask = MUIC_INT2_DCDTmr_MASK, },
> + { .reg_offset = 1, .mask = MUIC_INT2_DBChg_MASK, },
> + { .reg_offset = 1, .mask = MUIC_INT2_VBVolt_MASK, },
> + /* MUIC_INT3 interrupts */
> + { .reg_offset = 2, .mask = MUIC_INT3_OVP_MASK, },
> +};
> +
> +static const struct regmap_irq_chip max8997_irq_chip_muic = {
> + .name = "max8997-muic",
> + .status_base = MAX8997_MUIC_REG_INT1,
> + .mask_base = MAX8997_MUIC_REG_INTMASK1,
> + .mask_invert = true,
> + .num_regs = 3,
> + .irqs = max8997_irqs_muic,
> + .num_irqs = ARRAY_SIZE(max8997_irqs_muic),
> +};
> +
> /*
> * Only the common platform data elements for max8997 are parsed here from the
> * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
> @@ -173,6 +241,15 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
> return ret;
> }
>
> + ret = regmap_add_irq_chip(max8997->regmap, max8997->irq,
> + IRQF_ONESHOT | IRQF_SHARED |
> + IRQF_TRIGGER_FALLING, 0,
> + &max8997_irq_chip, &max8997->irq_data);
> + if (ret) {
> + dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
> + return ret;
> + }
> +
Add regmap_del_irq_chip() on driver remove and where needed on probe
error paths.
> max8997->regmap_rtc = devm_regmap_init_i2c(max8997->rtc,
> &max8997_regmap_rtc_config);
> if (IS_ERR(max8997->regmap_rtc)) {
> @@ -200,9 +277,17 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
> goto err_regmap;
> }
>
> - pm_runtime_set_active(max8997->dev);
> + ret = regmap_add_irq_chip(max8997->regmap_muic, max8997->irq,
> + IRQF_ONESHOT | IRQF_SHARED |
> + IRQF_TRIGGER_FALLING, 0,
> + &max8997_irq_chip_muic,
> + &max8997->irq_data_muic);
> + if (ret) {
> + dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
> + return ret;
> + }
>
> - max8997_irq_init(max8997);
> + pm_runtime_set_active(max8997->dev);
>
> ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
> ARRAY_SIZE(max8997_devs),
> @@ -464,7 +549,7 @@ static int max8997_resume(struct device *dev)
>
> if (device_may_wakeup(dev))
> irq_set_irq_wake(max8997->irq, 0);
> - return max8997_irq_resume(max8997);
> + return 0;
> }
Actually you're changing a little driver logic here. I think the
max8997_irq_resume() was here on purpose - to process any interrupts and
clear interrupt registers (e.g. MUIC from) after resuming. Is it working
properly during suspend/resume? Is it working when the MUIC interrupt is
the wake up source?
> static const struct dev_pm_ops max8997_pm = {
> diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
> index b866f7d5..22769ea 100644
> --- a/drivers/rtc/rtc-max8997.c
> +++ b/drivers/rtc/rtc-max8997.c
> @@ -494,7 +494,7 @@ static int max8997_rtc_probe(struct platform_device *pdev)
> return ret;
> }
>
> - virq = irq_create_mapping(max8997->irq_domain, MAX8997_PMICIRQ_RTCA1);
> + virq = regmap_irq_get_virq(max8997->irq_data, MAX8997_PMICIRQ_RTCA1);
> if (!virq) {
> dev_err(&pdev->dev, "Failed to create mapping alarm IRQ\n");
> ret = -ENXIO;
> diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
> index ea80ef8..af2f0aa 100644
> --- a/include/linux/mfd/max8997-private.h
> +++ b/include/linux/mfd/max8997-private.h
> @@ -333,6 +333,48 @@ enum max8997_irq_source {
> MAX8997_IRQ_GROUP_NR,
> };
>
> +#define PMIC_INT1_PWRONR_MASK (0x1 << 0)
> +#define PMIC_INT1_PWRONF_MASK (0x1 << 1)
> +#define PMIC_INT1_PWRON1SEC_MASK (0x1 << 3)
> +#define PMIC_INT1_JIGONR_MASK (0x1 << 4)
> +#define PMIC_INT1_JIGONF_MASK (0x1 << 5)
> +#define PMIC_INT1_LOWBAT2_MASK (0x1 << 6)
> +#define PMIC_INT1_LOWBAT1_MASK (0x1 << 7)
> +
> +#define PMIC_INT2_JIGR_MASK (0x1 << 0)
> +#define PMIC_INT2_JIGF_MASK (0x1 << 1)
> +#define PMIC_INT2_MR_MASK (0x1 << 2)
> +#define PMIC_INT2_DVS1OK_MASK (0x1 << 3)
> +#define PMIC_INT2_DVS2OK_MASK (0x1 << 4)
> +#define PMIC_INT2_DVS3OK_MASK (0x1 << 5)
> +#define PMIC_INT2_DVS4OK_MASK (0x1 << 6)
> +
> +#define PMIC_INT3_CHGINS_MASK (0x1 << 0)
> +#define PMIC_INT3_CHGRM_MASK (0x1 << 1)
> +#define PMIC_INT3_DCINOVP_MASK (0x1 << 2)
> +#define PMIC_INT3_TOPOFFR_MASK (0x1 << 3)
> +#define PMIC_INT3_CHGRSTF_MASK (0x1 << 5)
> +#define PMIC_INT3_MBCHGTMEXPD_MASK (0x1 << 7)
> +
> +#define PMIC_INT4_RTC60S_MASK (0x1 << 0)
> +#define PMIC_INT4_RTCA1_MASK (0x1 << 1)
> +#define PMIC_INT4_RTCA2_MASK (0x1 << 2)
> +#define PMIC_INT4_SMPL_INT_MASK (0x1 << 3)
> +#define PMIC_INT4_RTC1S_MASK (0x1 << 4)
> +#define PMIC_INT4_WTSR_MASK (0x1 << 5)
> +
> +#define MUIC_INT1_ADC_MASK (0x1 << 0)
> +#define MUIC_INT1_ADCLow_MASK (0x1 << 1)
> +#define MUIC_INT1_ADCError_MASK (0x1 << 2)
> +
> +#define MUIC_INT2_ChgTyp_MASK (0x1 << 0)
> +#define MUIC_INT2_ChgDetRun_MASK (0x1 << 1)
> +#define MUIC_INT2_DCDTmr_MASK (0x1 << 2)
> +#define MUIC_INT2_DBChg_MASK (0x1 << 3)
> +#define MUIC_INT2_VBVolt_MASK (0x1 << 4)
You changed here naming convention to CamelCase. Any reasons?
> +
> +#define MUIC_INT3_OVP_MASK (0x1 << 2)
> +
> enum max8997_irq {
> MAX8997_PMICIRQ_PWRONR,
> MAX8997_PMICIRQ_PWRONF,
> @@ -364,19 +406,23 @@ enum max8997_irq {
> MAX8997_PMICIRQ_RTC1S,
> MAX8997_PMICIRQ_WTSR,
>
> - MAX8997_MUICIRQ_ADCError,
> - MAX8997_MUICIRQ_ADCLow,
> + MAX8997_PMICIRQ_NR,
> +};
> +
> +enum max8997_irq_muic {
> MAX8997_MUICIRQ_ADC,
> + MAX8997_MUICIRQ_ADCLow,
> + MAX8997_MUICIRQ_ADCError,
>
> - MAX8997_MUICIRQ_VBVolt,
> - MAX8997_MUICIRQ_DBChg,
> - MAX8997_MUICIRQ_DCDTmr,
> - MAX8997_MUICIRQ_ChgDetRun,
> MAX8997_MUICIRQ_ChgTyp,
> + MAX8997_MUICIRQ_ChgDetRun,
> + MAX8997_MUICIRQ_DCDTmr,
> + MAX8997_MUICIRQ_DBChg,
> + MAX8997_MUICIRQ_VBVolt,
>
> MAX8997_MUICIRQ_OVP,
>
> - MAX8997_IRQ_NR,
> + MAX8997_MUCIRQ_NR,
> };
Camel shows up once again.
>
> #define MAX8997_NUM_GPIO 12
> @@ -397,9 +443,10 @@ struct max8997_dev {
> struct regmap *regmap_haptic;
> struct regmap *regmap_muic;
>
> + struct regmap_irq_chip_data *irq_data;
> + struct regmap_irq_chip_data *irq_data_muic;
> int irq;
> int ono;
> - struct irq_domain *irq_domain;
> struct mutex irqlock;
> int irq_masks_cur[MAX8997_IRQ_GROUP_NR];
> int irq_masks_cache[MAX8997_IRQ_GROUP_NR];
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/3] mfd: max8997: use regmap to access registers
2014-03-11 14:32 ` Krzysztof Kozlowski
@ 2014-03-11 14:59 ` Robert Baldyga
2014-03-11 15:20 ` Krzysztof Kozlowski
0 siblings, 1 reply; 9+ messages in thread
From: Robert Baldyga @ 2014-03-11 14:59 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: sameo, lee.jones, myungjoo.ham, cw00.choi, dmitry.torokhov,
cooloney, rpurdie, dbaryshkov, dwmw2, lgirdwood, broonie, a.zummo,
paul.gortmaker, linux-kernel, linux-input, linux-leds, rtc-linux,
m.szyprowski
On 03/11/2014 03:32 PM, Krzysztof Kozlowski wrote:
> On Tue, 2014-03-11 at 14:58 +0100, Robert Baldyga wrote:
>> This patch modifies max8997 driver and each associated function
>> driver, to use regmap instead of operating directly on i2c bus. It
>> will allow to simplify IRQ handling using regmap-irq.
>>
>> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> ---
>> drivers/extcon/extcon-max8997.c | 31 ++++----
>> drivers/input/misc/max8997_haptic.c | 34 +++++----
>> drivers/leds/leds-max8997.c | 13 ++--
>> drivers/mfd/max8997-irq.c | 64 ++++++----------
>> drivers/mfd/max8997.c | 143
>> ++++++++++++++++-------------------
>> drivers/power/max8997_charger.c | 33 ++++----
>> drivers/regulator/max8997.c | 87 ++++++++++-----------
>> drivers/rtc/rtc-max8997.c | 56 ++++++++------
>> include/linux/mfd/max8997-private.h | 17 ++--- 9 files changed,
>> 229 insertions(+), 249 deletions(-)
>
> I think you should also add "select REGMAP_I2C" to the main driver
> config secion (drivers/mfd/Kconfig).
Will be fixed.
>
> (...)
>
>> diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c
>> index 43fa614..656d03b 100644 --- a/drivers/mfd/max8997-irq.c +++
>> b/drivers/mfd/max8997-irq.c @@ -26,6 +26,7 @@ #include
>> <linux/interrupt.h> #include <linux/mfd/max8997.h> #include
>> <linux/mfd/max8997-private.h> +#include <linux/regmap.h>
>>
>> static const u8 max8997_mask_reg[] = { [PMIC_INT1] =
>> MAX8997_REG_INT1MSK, @@ -41,25 +42,6 @@ static const u8
>> max8997_mask_reg[] = { [FLASH_STATUS] = MAX8997_REG_INVALID, };
>>
>> -static struct i2c_client *get_i2c(struct max8997_dev *max8997, -
>> enum max8997_irq_source src) -{ - switch (src) { - case PMIC_INT1
>> ... PMIC_INT4: - return max8997->i2c; - case FUEL_GAUGE: - return
>> NULL; - case MUIC_INT1 ... MUIC_INT3: - return max8997->muic; -
>> case GPIO_LOW ... GPIO_HI: - return max8997->i2c; - case
>> FLASH_STATUS: - return max8997->i2c; - default: - return
>> ERR_PTR(-EINVAL); - } -} - struct max8997_irq_data { int mask;
>> enum max8997_irq_source group; @@ -124,15 +106,20 @@ static void
>> max8997_irq_sync_unlock(struct irq_data *data) int i;
>>
>> for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) { + struct regmap *map;
>> u8 mask_reg = max8997_mask_reg[i]; - struct i2c_client *i2c =
>> get_i2c(max8997, i); + + if (i >= MUIC_INT1 && i <= MUIC_INT3) +
>> map = max8997->regmap_muic; + else + map = max8997->regmap;
>>
>> if (mask_reg == MAX8997_REG_INVALID || - IS_ERR_OR_NULL(i2c)) +
>> IS_ERR_OR_NULL(map)) continue; max8997->irq_masks_cache[i] =
>> max8997->irq_masks_cur[i];
>>
>> - max8997_write_reg(i2c, max8997_mask_reg[i], + regmap_write(map,
>> max8997_mask_reg[i], max8997->irq_masks_cur[i]); }
>>
>> @@ -180,12 +167,12 @@ static struct irq_chip max8997_irq_chip = {
>> static irqreturn_t max8997_irq_thread(int irq, void *data) {
>> struct max8997_dev *max8997 = data; - u8
>> irq_reg[MAX8997_IRQ_GROUP_NR] = {}; - u8 irq_src; + unsigned int
>> irq_reg[MAX8997_IRQ_GROUP_NR] = {}; + unsigned int irq_src; int
>> ret; int i, cur_irq;
>>
>> - ret = max8997_read_reg(max8997->i2c, MAX8997_REG_INTSRC,
>> &irq_src); + ret = regmap_read(max8997->regmap,
>> MAX8997_REG_INTSRC, &irq_src); if (ret < 0) { dev_err(max8997->dev,
>> "Failed to read interrupt source: %d\n", ret); @@ -194,8 +181,9 @@
>> static irqreturn_t max8997_irq_thread(int irq, void *data)
>>
>> if (irq_src & MAX8997_IRQSRC_PMIC) { /* PMIC INT1 ~ INT4 */ -
>> max8997_bulk_read(max8997->i2c, MAX8997_REG_INT1, 4, -
>> &irq_reg[PMIC_INT1]); + for (i = 0; i < 4; ++i) +
>> regmap_read(max8997->regmap, + MAX8997_REG_INT1+i,
>> &irq_reg[PMIC_INT1+i]);
>
> Can't you use here one bulk read instead of 4xregmap_read()?
Mixing regmap_read and regmap_bulk_read is not good idea, because the
first function returns register value as unsigned int, but the second
returns reg value to each single byte. So it would need to do some
additional operations, and makes things more complicated.
>
>
>> } if (irq_src & MAX8997_IRQSRC_FUELGAUGE) { /* @@ -215,8 +203,9 @@
>> static irqreturn_t max8997_irq_thread(int irq, void *data) } if
>> (irq_src & MAX8997_IRQSRC_MUIC) { /* MUIC INT1 ~ INT3 */ -
>> max8997_bulk_read(max8997->muic, MAX8997_MUIC_REG_INT1, 3, -
>> &irq_reg[MUIC_INT1]); + for (i = 0; i < 3; ++i) +
>> regmap_read(max8997->regmap_muic, + MAX8997_MUIC_REG_INT1+i,
>> &irq_reg[MUIC_INT1+i]);
>
> Same as above - bulk.
>
>> } if (irq_src & MAX8997_IRQSRC_GPIO) { /* GPIO Interrupt */ @@
>> -225,8 +214,8 @@ static irqreturn_t max8997_irq_thread(int irq,
>> void *data) irq_reg[GPIO_LOW] = 0; irq_reg[GPIO_HI] = 0;
>>
>> - max8997_bulk_read(max8997->i2c, MAX8997_REG_GPIOCNTL1, -
>> MAX8997_NUM_GPIO, gpio_info); + regmap_bulk_read(max8997->regmap,
>> MAX8997_REG_GPIOCNTL1, + gpio_info, MAX8997_NUM_GPIO); for (i =
>> 0; i < MAX8997_NUM_GPIO; i++) { bool interrupt = false;
>>
>> @@ -260,7 +249,7 @@ static irqreturn_t max8997_irq_thread(int irq,
>> void *data) } if (irq_src & MAX8997_IRQSRC_FLASH) { /* Flash Status
>> Interrupt */ - ret = max8997_read_reg(max8997->i2c,
>> MAX8997_REG_FLASHSTATUS, + ret = regmap_read(max8997->regmap,
>> MAX8997_REG_FLASHSTATUS, &irq_reg[FLASH_STATUS]); }
>>
>> @@ -312,7 +301,7 @@ int max8997_irq_init(struct max8997_dev
>> *max8997) struct irq_domain *domain; int i; int ret; - u8 val; +
>> unsigned int val;
>>
>> if (!max8997->irq) { dev_warn(max8997->dev, "No interrupt
>> specified.\n"); @@ -323,22 +312,19 @@ int max8997_irq_init(struct
>> max8997_dev *max8997)
>>
>> /* Mask individual interrupt sources */ for (i = 0; i <
>> MAX8997_IRQ_GROUP_NR; i++) { - struct i2c_client *i2c; -
>> max8997->irq_masks_cur[i] = 0xff; max8997->irq_masks_cache[i] =
>> 0xff; - i2c = get_i2c(max8997, i);
>>
>> - if (IS_ERR_OR_NULL(i2c)) + if (IS_ERR_OR_NULL(max8997->regmap))
>> continue; if (max8997_mask_reg[i] == MAX8997_REG_INVALID)
>> continue;
>>
>> - max8997_write_reg(i2c, max8997_mask_reg[i], 0xff); +
>> regmap_write(max8997->regmap, max8997_mask_reg[i], 0xff); }
>>
>> for (i = 0; i < MAX8997_NUM_GPIO; i++) { - max8997->gpio_status[i]
>> = (max8997_read_reg(max8997->i2c, + max8997->gpio_status[i] =
>> (regmap_read(max8997->regmap, MAX8997_REG_GPIOCNTL1 + i, &val) &
>> MAX8997_GPIO_DATA_MASK) ? diff --git a/drivers/mfd/max8997.c
>> b/drivers/mfd/max8997.c index 5adede0..ca6f310 100644 ---
>> a/drivers/mfd/max8997.c +++ b/drivers/mfd/max8997.c @@ -33,6 +33,7
>> @@ #include <linux/mfd/core.h> #include <linux/mfd/max8997.h>
>> #include <linux/mfd/max8997-private.h> +#include <linux/regmap.h>
>>
>> #define I2C_ADDR_PMIC (0xCC >> 1) #define I2C_ADDR_MUIC (0x4A >> 1)
>> @@ -57,81 +58,29 @@ static struct of_device_id
>> max8997_pmic_dt_match[] = { }; #endif
>>
>> -int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest) -{
>> - struct max8997_dev *max8997 = i2c_get_clientdata(i2c); - int
>> ret; - - mutex_lock(&max8997->iolock); - ret =
>> i2c_smbus_read_byte_data(i2c, reg); -
>> mutex_unlock(&max8997->iolock); - if (ret < 0) - return ret; - -
>> ret &= 0xff; - *dest = ret; - return 0; -}
>> -EXPORT_SYMBOL_GPL(max8997_read_reg); - -int
>> max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8
>> *buf) -{ - struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
>> - int ret; - - mutex_lock(&max8997->iolock); - ret =
>> i2c_smbus_read_i2c_block_data(i2c, reg, count, buf); -
>> mutex_unlock(&max8997->iolock); - if (ret < 0) - return ret; - -
>> return 0; -} -EXPORT_SYMBOL_GPL(max8997_bulk_read); - -int
>> max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value) -{ -
>> struct max8997_dev *max8997 = i2c_get_clientdata(i2c); - int ret; -
>> - mutex_lock(&max8997->iolock); - ret =
>> i2c_smbus_write_byte_data(i2c, reg, value); -
>> mutex_unlock(&max8997->iolock); - return ret; -}
>> -EXPORT_SYMBOL_GPL(max8997_write_reg); - -int
>> max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8
>> *buf) -{ - struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
>> - int ret; +static const struct regmap_config max8997_regmap_config
>> = { + .reg_bits = 8, + .val_bits = 8, + .max_register =
>> MAX8997_REG_PMIC_END, +};
>>
>> - mutex_lock(&max8997->iolock); - ret =
>> i2c_smbus_write_i2c_block_data(i2c, reg, count, buf); -
>> mutex_unlock(&max8997->iolock); - if (ret < 0) - return ret;
>> +static const struct regmap_config max8997_regmap_rtc_config = { +
>> .reg_bits = 8, + .val_bits = 8, + .max_register =
>> MAX8997_RTC_REG_END, +};
>>
>> - return 0; -} -EXPORT_SYMBOL_GPL(max8997_bulk_write); +static
>> const struct regmap_config max8997_regmap_haptic_config = { +
>> .reg_bits = 8, + .val_bits = 8, + .max_register =
>> MAX8997_HAPTIC_REG_END, +};
>>
>> -int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8
>> mask) -{ - struct max8997_dev *max8997 = i2c_get_clientdata(i2c); -
>> int ret; - - mutex_lock(&max8997->iolock); - ret =
>> i2c_smbus_read_byte_data(i2c, reg); - if (ret >= 0) { - u8
>> old_val = ret & 0xff; - u8 new_val = (val & mask) | (old_val &
>> (~mask)); - ret = i2c_smbus_write_byte_data(i2c, reg, new_val); - }
>> - mutex_unlock(&max8997->iolock); - return ret; -}
>> -EXPORT_SYMBOL_GPL(max8997_update_reg); +static const struct
>> regmap_config max8997_regmap_muic_config = { + .reg_bits = 8, +
>> .val_bits = 8, + .max_register = MAX8997_MUIC_REG_END, +};
>>
>> /* * Only the common platform data elements for max8997 are parsed
>> here from the @@ -209,11 +158,48 @@ static int
>> max8997_i2c_probe(struct i2c_client *i2c,
>>
>> max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
>> i2c_set_clientdata(max8997->rtc, max8997); + max8997->haptic =
>> i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
>> i2c_set_clientdata(max8997->haptic, max8997); + max8997->muic =
>> i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
>> i2c_set_clientdata(max8997->muic, max8997);
>>
>> + max8997->regmap = devm_regmap_init_i2c(i2c,
>> &max8997_regmap_config); + if (IS_ERR(max8997->regmap)) { + ret =
>> PTR_ERR(max8997->regmap); + dev_err(max8997->dev, + "failed to
>> allocate register map: %d\n", ret); + return ret; + } + +
>> max8997->regmap_rtc = devm_regmap_init_i2c(max8997->rtc, +
>> &max8997_regmap_rtc_config); + if (IS_ERR(max8997->regmap_rtc)) {
>> + ret = PTR_ERR(max8997->regmap_rtc); + dev_err(max8997->dev, +
>> "failed to allocate register map: %d\n", ret); + goto err_regmap;
>> + } + + max8997->regmap_haptic =
>> devm_regmap_init_i2c(max8997->haptic, +
>> &max8997_regmap_haptic_config); + if
>> (IS_ERR(max8997->regmap_haptic)) { + ret =
>> PTR_ERR(max8997->regmap_haptic); + dev_err(max8997->dev, + "failed
>> to allocate register map: %d\n", ret); + goto err_regmap; + } + +
>> max8997->regmap_muic = devm_regmap_init_i2c(max8997->muic, +
>> &max8997_regmap_muic_config); + if (IS_ERR(max8997->regmap_muic)) {
>> + ret = PTR_ERR(max8997->regmap_muic); + dev_err(max8997->dev, +
>> "failed to allocate register map: %d\n", ret); + goto err_regmap;
>> + } + pm_runtime_set_active(max8997->dev);
>>
>> max8997_irq_init(max8997); @@ -238,6 +224,7 @@ static int
>> max8997_i2c_probe(struct i2c_client *i2c,
>>
>> err_mfd: mfd_remove_devices(max8997->dev); +err_regmap:
>> i2c_unregister_device(max8997->muic);
>> i2c_unregister_device(max8997->haptic);
>> i2c_unregister_device(max8997->rtc); @@ -423,15 +410,15 @@ static
>> int max8997_freeze(struct device *dev) int i;
>>
>> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++) -
>> max8997_read_reg(i2c, max8997_dumpaddr_pmic[i], +
>> regmap_read(max8997->regmap, max8997_dumpaddr_pmic[i],
>> &max8997->reg_dump[i]);
>>
>> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++) -
>> max8997_read_reg(i2c, max8997_dumpaddr_muic[i], +
>> regmap_read(max8997->regmap_muic, max8997_dumpaddr_muic[i],
>> &max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
>>
>> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++) -
>> max8997_read_reg(i2c, max8997_dumpaddr_haptic[i], +
>> regmap_read(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
>> &max8997->reg_dump[i + MAX8997_REG_PMIC_END +
>> MAX8997_MUIC_REG_END]);
>
> Code looks good. Idea for another patch: could bulk read be used
> here? At least some of registers have continuous addresses so maybe
> its worth to read them at once?
It's problematic, because address ranges of dumped registers are not
continuous. So it would need to call regmap_bulk_read in loop, which
gives a small gain and complicates the code. I think there is no purpose
to do it. It's better and keep it simple.
>>
>> @@ -445,15 +432,15 @@ static int max8997_restore(struct device
>> *dev) int i;
>>
>> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++) -
>> max8997_write_reg(i2c, max8997_dumpaddr_pmic[i], +
>> regmap_write(max8997->regmap, max8997_dumpaddr_pmic[i],
>> max8997->reg_dump[i]);
>>
>> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++) -
>> max8997_write_reg(i2c, max8997_dumpaddr_muic[i], +
>> regmap_write(max8997->regmap_muic, max8997_dumpaddr_muic[i],
>> max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
>>
>> for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++) -
>> max8997_write_reg(i2c, max8997_dumpaddr_haptic[i], +
>> regmap_write(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
>> max8997->reg_dump[i + MAX8997_REG_PMIC_END +
>> MAX8997_MUIC_REG_END]);
>
> As above - bulk write (if you still would like to improve things in
> this driver)?
>
Thanks,
Robert
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 3/3] mfd: max8997: move regmap handling to function drivers
2014-03-11 13:58 ` [PATCH 3/3] mfd: max8997: move regmap handling to function drivers Robert Baldyga
@ 2014-03-11 15:07 ` Krzysztof Kozlowski
0 siblings, 0 replies; 9+ messages in thread
From: Krzysztof Kozlowski @ 2014-03-11 15:07 UTC (permalink / raw)
To: Robert Baldyga
Cc: sameo, lee.jones, myungjoo.ham, cw00.choi, dmitry.torokhov,
cooloney, rpurdie, dbaryshkov, dwmw2, lgirdwood, broonie, a.zummo,
paul.gortmaker, linux-kernel, linux-input, linux-leds, rtc-linux,
m.szyprowski
On Tue, 2014-03-11 at 14:58 +0100, Robert Baldyga wrote:
> This patch moves code creating new i2c clients and regmaps to function
> drivers which uses them. It allow to avoid creating this instances when
> intividual function drivers are not enabled.
s/which uses/which use/
s/It allow/ It allows/
s/intividual/individual/
>
> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
> ---
> drivers/extcon/extcon-max8997.c | 118 +++++++++++++++++++++++++++--
> drivers/input/misc/max8997_haptic.c | 113 ++++++++++++++++++++++-----
> drivers/mfd/max8997.c | 143 -----------------------------------
> drivers/rtc/rtc-max8997.c | 74 ++++++++++++------
> include/linux/mfd/max8997-private.h | 14 ++--
> 5 files changed, 262 insertions(+), 200 deletions(-)
>
> diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
> index 5948061..a71581a 100644
> --- a/drivers/extcon/extcon-max8997.c
> +++ b/drivers/extcon/extcon-max8997.c
> @@ -118,6 +118,9 @@ enum max8997_muic_charger_type {
> struct max8997_muic_info {
> struct device *dev;
> struct max8997_dev *max8997;
> + struct i2c_client *i2c;
> + struct regmap *regmap;
> + struct regmap_irq_chip_data *irq_data;
> struct extcon_dev *edev;
> int prev_cable_type;
> int prev_chg_type;
> @@ -144,6 +147,39 @@ struct max8997_muic_info {
> */
> int path_usb;
> int path_uart;
> +
> + unsigned int reg_dump[MAX8997_MUIC_REG_END];
> +};
> +
> +static const struct regmap_config max8997_muic_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = MAX8997_MUIC_REG_END,
> +};
> +
> +static const struct regmap_irq max8997_irqs_muic[] = {
> + /* MUIC_INT1 interrupts */
> + { .reg_offset = 0, .mask = MUIC_INT1_ADC_MASK, },
> + { .reg_offset = 0, .mask = MUIC_INT1_ADCLow_MASK, },
> + { .reg_offset = 0, .mask = MUIC_INT1_ADCError_MASK, },
> + /* MUIC_INT2 interrupts */
> + { .reg_offset = 1, .mask = MUIC_INT2_ChgTyp_MASK, },
> + { .reg_offset = 1, .mask = MUIC_INT2_ChgDetRun_MASK, },
> + { .reg_offset = 1, .mask = MUIC_INT2_DCDTmr_MASK, },
> + { .reg_offset = 1, .mask = MUIC_INT2_DBChg_MASK, },
> + { .reg_offset = 1, .mask = MUIC_INT2_VBVolt_MASK, },
> + /* MUIC_INT3 interrupts */
> + { .reg_offset = 2, .mask = MUIC_INT3_OVP_MASK, },
> +};
> +
> +static const struct regmap_irq_chip max8997_muic_irq_chip = {
> + .name = "max8997-muic",
> + .status_base = MAX8997_MUIC_REG_INT1,
> + .mask_base = MAX8997_MUIC_REG_INTMASK1,
> + .mask_invert = true,
> + .num_regs = 3,
> + .irqs = max8997_irqs_muic,
> + .num_irqs = ARRAY_SIZE(max8997_irqs_muic),
> };
>
> enum {
> @@ -191,7 +227,7 @@ static int max8997_muic_set_debounce_time(struct max8997_muic_info *info,
> case ADC_DEBOUNCE_TIME_10MS:
> case ADC_DEBOUNCE_TIME_25MS:
> case ADC_DEBOUNCE_TIME_38_62MS:
> - ret = regmap_update_bits(info->max8997->regmap_muic,
> + ret = regmap_update_bits(info->regmap,
> MAX8997_MUIC_REG_CONTROL3,
> CONTROL3_ADCDBSET_MASK,
> time << CONTROL3_ADCDBSET_SHIFT);
> @@ -229,7 +265,7 @@ static int max8997_muic_set_path(struct max8997_muic_info *info,
> else
> ctrl1 = CONTROL1_SW_OPEN;
>
> - ret = regmap_update_bits(info->max8997->regmap_muic,
> + ret = regmap_update_bits(info->regmap,
> MAX8997_MUIC_REG_CONTROL1, COMP_SW_MASK, ctrl1);
> if (ret < 0) {
> dev_err(info->dev, "failed to update MUIC register\n");
> @@ -241,7 +277,7 @@ static int max8997_muic_set_path(struct max8997_muic_info *info,
> else
> ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
>
> - ret = regmap_update_bits(info->max8997->regmap_muic,
> + ret = regmap_update_bits(info->regmap,
> MAX8997_MUIC_REG_CONTROL2,
> CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2);
> if (ret < 0) {
> @@ -544,7 +580,7 @@ static void max8997_muic_irq_work(struct work_struct *work)
> if (info->irq == muic_irqs[i].virq)
> irq_type = muic_irqs[i].irq;
>
> - ret = regmap_bulk_read(info->max8997->regmap_muic,
> + ret = regmap_bulk_read(info->regmap,
> MAX8997_MUIC_REG_STATUS1, info->status, 2);
> if (ret) {
> dev_err(info->dev, "failed to read muic register\n");
> @@ -606,7 +642,7 @@ static int max8997_muic_detect_dev(struct max8997_muic_info *info)
> mutex_lock(&info->mutex);
>
> /* Read STATUSx register to detect accessory */
> - ret = regmap_bulk_read(info->max8997->regmap_muic,
> + ret = regmap_bulk_read(info->regmap,
> MAX8997_MUIC_REG_STATUS1, info->status, 2);
> if (ret) {
> dev_err(info->dev, "failed to read MUIC register\n");
> @@ -670,6 +706,27 @@ static int max8997_muic_probe(struct platform_device *pdev)
> info->dev = &pdev->dev;
> info->max8997 = max8997;
>
> + info->i2c = i2c_new_dummy(max8997->i2c->adapter, MAX8997_I2C_ADDR_MUIC);
Consider rebasing your patch on Lee Jones' MFD tree because there are
minor fixes for possible NULL pointer dereference on i2c_new_dummy
error. I didn't mentioned this before as this is actually the first
place where you add such code :). So add with current fixes in
linux-next/MFD tree.
This applies also to other drivers (haptic etc.).
> +
> + info->regmap = devm_regmap_init_i2c(info->i2c,
> + &max8997_muic_regmap_config);
> + if (IS_ERR(info->regmap)) {
> + ret = PTR_ERR(info->regmap);
> + dev_err(info->dev,
> + "failed to allocate register map: %d\n", ret);
> + goto err_regmap;
> + }
> +
> + ret = regmap_add_irq_chip(info->regmap, max8997->irq,
> + IRQF_ONESHOT | IRQF_SHARED |
> + IRQF_TRIGGER_FALLING, 0,
> + &max8997_muic_irq_chip,
> + &info->irq_data);
> + if (ret) {
> + dev_err(info->dev, "failed to add irq chip: %d\n", ret);
> + goto err_regmap;
> + }
> +
Same as in previous patch - please add regmap_del_irq_chip() in error
paths and remove function.
This applies also to other drivers (haptic etc.).
> platform_set_drvdata(pdev, info);
> mutex_init(&info->mutex);
>
> @@ -679,8 +736,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
> struct max8997_muic_irq *muic_irq = &muic_irqs[i];
> unsigned int virq = 0;
>
> - virq = regmap_irq_get_virq(max8997->irq_data_muic,
> - muic_irq->irq);
> + virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq);
> if (!virq) {
> ret = -EINVAL;
> goto err_irq;
> @@ -723,7 +779,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
>
> /* Initialize registers according to platform data */
> for (i = 0; i < muic_pdata->num_init_data; i++) {
> - regmap_write(info->max8997->regmap_muic,
> + regmap_write(info->regmap,
> muic_pdata->init_data[i].addr,
> muic_pdata->init_data[i].data);
> }
> @@ -779,6 +835,8 @@ static int max8997_muic_probe(struct platform_device *pdev)
> err_irq:
> while (--i >= 0)
> free_irq(muic_irqs[i].virq, info);
> +err_regmap:
> + i2c_unregister_device(info->i2c);
> return ret;
> }
>
> @@ -796,10 +854,54 @@ static int max8997_muic_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static u8 max8997_muic_dumpaddr[] = {
> + MAX8997_MUIC_REG_INTMASK1,
> + MAX8997_MUIC_REG_INTMASK2,
> + MAX8997_MUIC_REG_INTMASK3,
> + MAX8997_MUIC_REG_CDETCTRL,
> + MAX8997_MUIC_REG_CONTROL1,
> + MAX8997_MUIC_REG_CONTROL2,
> + MAX8997_MUIC_REG_CONTROL3,
> +};
> +
> +static int max8997_muic_freeze(struct device *dev)
> +{
> + struct platform_device *pdev =
> + container_of(dev, struct platform_device, dev);
> + struct max8997_muic_info *info = platform_get_drvdata(pdev);
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(max8997_muic_dumpaddr); i++)
> + regmap_read(info->regmap, max8997_muic_dumpaddr[i],
> + &info->reg_dump[i]);
> +
> + return 0;
> +}
> +
> +static int max8997_muic_restore(struct device *dev)
> +{
> + struct platform_device *pdev =
> + container_of(dev, struct platform_device, dev);
> + struct max8997_muic_info *info = platform_get_drvdata(pdev);
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(max8997_muic_dumpaddr); i++)
> + regmap_write(info->regmap, max8997_muic_dumpaddr[i],
> + info->reg_dump[i]);
> +
> + return 0;
> +}
> +
> +static const struct dev_pm_ops max8997_muic_pm = {
> + .freeze = max8997_muic_freeze,
> + .restore = max8997_muic_restore,
> +};
> +
Shouldn't it be inside #ifdef CONFIG_PM_SLEEP?
> static struct platform_driver max8997_muic_driver = {
> .driver = {
> .name = DEV_NAME,
> .owner = THIS_MODULE,
> + .pm = &max8997_muic_pm,
> },
> .probe = max8997_muic_probe,
> .remove = max8997_muic_remove,
> diff --git a/drivers/input/misc/max8997_haptic.c b/drivers/input/misc/max8997_haptic.c
> index d3f7079..abb44f3 100644
> --- a/drivers/input/misc/max8997_haptic.c
> +++ b/drivers/input/misc/max8997_haptic.c
> @@ -47,6 +47,8 @@
> struct max8997_haptic {
> struct device *dev;
> struct max8997_dev *max8997;
> + struct i2c_client *i2c;
> + struct regmap *regmap;
> struct input_dev *input_dev;
> struct regulator *regulator;
>
> @@ -66,6 +68,14 @@ struct max8997_haptic {
> unsigned int internal_mode_pattern;
> unsigned int pattern_cycle;
> unsigned int pattern_signal_period;
> +
> + unsigned int reg_dump[MAX8997_HAPTIC_REG_END];
> +};
> +
> +static const struct regmap_config max8997_haptic_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = MAX8997_HAPTIC_REG_END,
> };
>
> static int max8997_haptic_set_duty_cycle(struct max8997_haptic *chip)
> @@ -87,19 +97,19 @@ static int max8997_haptic_set_duty_cycle(struct max8997_haptic *chip)
> }
> switch (chip->internal_mode_pattern) {
> case 0:
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_SIGPWMDC1, duty_index);
> break;
> case 1:
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_SIGPWMDC2, duty_index);
> break;
> case 2:
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_SIGPWMDC3, duty_index);
> break;
> case 3:
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_SIGPWMDC4, duty_index);
> break;
> default:
> @@ -116,51 +126,49 @@ static void max8997_haptic_configure(struct max8997_haptic *chip)
> value = chip->type << MAX8997_MOTOR_TYPE_SHIFT |
> chip->enabled << MAX8997_ENABLE_SHIFT |
> chip->mode << MAX8997_MODE_SHIFT | chip->pwm_divisor;
> - regmap_write(chip->max8997->regmap_haptic,
> - MAX8997_HAPTIC_REG_CONF2, value);
> + regmap_write(chip->regmap, MAX8997_HAPTIC_REG_CONF2, value);
>
> if (chip->mode == MAX8997_INTERNAL_MODE && chip->enabled) {
> value = chip->internal_mode_pattern << MAX8997_CYCLE_SHIFT |
> chip->internal_mode_pattern << MAX8997_SIG_PERIOD_SHIFT |
> chip->internal_mode_pattern << MAX8997_SIG_DUTY_SHIFT |
> chip->internal_mode_pattern << MAX8997_PWM_DUTY_SHIFT;
> - regmap_write(chip->max8997->regmap_haptic,
> - MAX8997_HAPTIC_REG_DRVCONF, value);
> + regmap_write(chip->regmap, MAX8997_HAPTIC_REG_DRVCONF, value);
>
> switch (chip->internal_mode_pattern) {
> case 0:
> value = chip->pattern_cycle << 4;
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_CYCLECONF1, value);
> value = chip->pattern_signal_period;
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_SIGCONF1, value);
> break;
>
> case 1:
> value = chip->pattern_cycle;
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_CYCLECONF1, value);
> value = chip->pattern_signal_period;
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_SIGCONF2, value);
> break;
>
> case 2:
> value = chip->pattern_cycle << 4;
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_CYCLECONF2, value);
> value = chip->pattern_signal_period;
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_SIGCONF3, value);
> break;
>
> case 3:
> value = chip->pattern_cycle;
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_CYCLECONF2, value);
> value = chip->pattern_signal_period;
> - regmap_write(chip->max8997->regmap_haptic,
> + regmap_write(chip->regmap,
> MAX8997_HAPTIC_REG_SIGCONF4, value);
> break;
>
> @@ -277,6 +285,17 @@ static int max8997_haptic_probe(struct platform_device *pdev)
> chip->mode = haptic_pdata->mode;
> chip->pwm_divisor = haptic_pdata->pwm_divisor;
>
> + chip->i2c = i2c_new_dummy(iodev->i2c->adapter, MAX8997_I2C_ADDR_HAPTIC);
> +
Return value - use code from linux-next/MFD tree.
> + chip->regmap = devm_regmap_init_i2c(chip->i2c,
> + &max8997_haptic_regmap_config);
> + if (IS_ERR(chip->regmap)) {
> + error = PTR_ERR(chip->regmap);
> + dev_err(chip->dev,
> + "failed to allocate register map: %d\n", error);
> + goto err_free_i2c;
> + }
> +
> switch (chip->mode) {
> case MAX8997_INTERNAL_MODE:
> chip->internal_mode_pattern =
> @@ -294,7 +313,7 @@ static int max8997_haptic_probe(struct platform_device *pdev)
> dev_err(&pdev->dev,
> "unable to request PWM for haptic, error: %d\n",
> error);
> - goto err_free_mem;
> + goto err_free_i2c;
> }
> break;
>
> @@ -302,7 +321,7 @@ static int max8997_haptic_probe(struct platform_device *pdev)
> dev_err(&pdev->dev,
> "Invalid chip mode specified (%d)\n", chip->mode);
> error = -EINVAL;
> - goto err_free_mem;
> + goto err_free_i2c;
> }
>
> chip->regulator = regulator_get(&pdev->dev, "inmotor");
> @@ -348,6 +367,8 @@ err_put_regulator:
> err_free_pwm:
> if (chip->mode == MAX8997_EXTERNAL_MODE)
> pwm_free(chip->pwm);
> +err_free_i2c:
> + i2c_unregister_device(chip->i2c);
> err_free_mem:
> input_free_device(input_dev);
> kfree(chip);
> @@ -370,6 +391,24 @@ static int max8997_haptic_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static u8 max8997_haptic_dumpaddr[] = {
> + MAX8997_HAPTIC_REG_CONF1,
> + MAX8997_HAPTIC_REG_CONF2,
> + MAX8997_HAPTIC_REG_DRVCONF,
> + MAX8997_HAPTIC_REG_CYCLECONF1,
> + MAX8997_HAPTIC_REG_CYCLECONF2,
> + MAX8997_HAPTIC_REG_SIGCONF1,
> + MAX8997_HAPTIC_REG_SIGCONF2,
> + MAX8997_HAPTIC_REG_SIGCONF3,
> + MAX8997_HAPTIC_REG_SIGCONF4,
> + MAX8997_HAPTIC_REG_SIGDC1,
> + MAX8997_HAPTIC_REG_SIGDC2,
> + MAX8997_HAPTIC_REG_SIGPWMDC1,
> + MAX8997_HAPTIC_REG_SIGPWMDC2,
> + MAX8997_HAPTIC_REG_SIGPWMDC3,
> + MAX8997_HAPTIC_REG_SIGPWMDC4,
> +};
> +
> #ifdef CONFIG_PM_SLEEP
> static int max8997_haptic_suspend(struct device *dev)
> {
> @@ -382,7 +421,41 @@ static int max8997_haptic_suspend(struct device *dev)
> }
> #endif
>
> -static SIMPLE_DEV_PM_OPS(max8997_haptic_pm_ops, max8997_haptic_suspend, NULL);
> +static int max8997_haptic_freeze(struct device *dev)
> +{
> + struct platform_device *pdev =
> + container_of(dev, struct platform_device, dev);
> + struct max8997_haptic *chip = platform_get_drvdata(pdev);
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(max8997_haptic_dumpaddr); i++)
> + regmap_read(chip->regmap, max8997_haptic_dumpaddr[i],
> + &chip->reg_dump[i]);
> +
> + return 0;
> +}
> +
> +static int max8997_haptic_restore(struct device *dev)
> +{
> + struct platform_device *pdev =
> + container_of(dev, struct platform_device, dev);
> + struct max8997_haptic *chip = platform_get_drvdata(pdev);
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(max8997_haptic_dumpaddr); i++)
> + regmap_write(chip->regmap, max8997_haptic_dumpaddr[i],
> + chip->reg_dump[i]);
> +
> + return 0;
> +}
> +
> +static const struct dev_pm_ops max8997_haptic_pm = {
> +#ifdef CONFIG_PM_SLEEP
> + .suspend = max8997_haptic_suspend,
> +#endif
> + .freeze = max8997_haptic_freeze,
> + .restore = max8997_haptic_restore,
> +};
Freeze should be also in CONFIG_PM_SLEEP.
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/3] mfd: max8997: use regmap to access registers
2014-03-11 14:59 ` Robert Baldyga
@ 2014-03-11 15:20 ` Krzysztof Kozlowski
0 siblings, 0 replies; 9+ messages in thread
From: Krzysztof Kozlowski @ 2014-03-11 15:20 UTC (permalink / raw)
To: Robert Baldyga
Cc: sameo, lee.jones, myungjoo.ham, cw00.choi, dmitry.torokhov,
cooloney, rpurdie, dbaryshkov, dwmw2, lgirdwood, broonie, a.zummo,
paul.gortmaker, linux-kernel, linux-input, linux-leds, rtc-linux,
m.szyprowski
On Tue, 2014-03-11 at 15:59 +0100, Robert Baldyga wrote:
> >> @@ -180,12 +167,12 @@ static struct irq_chip max8997_irq_chip = {
> >> static irqreturn_t max8997_irq_thread(int irq, void *data) {
> >> struct max8997_dev *max8997 = data; - u8
> >> irq_reg[MAX8997_IRQ_GROUP_NR] = {}; - u8 irq_src; + unsigned int
> >> irq_reg[MAX8997_IRQ_GROUP_NR] = {}; + unsigned int irq_src; int
> >> ret; int i, cur_irq;
> >>
> >> - ret = max8997_read_reg(max8997->i2c, MAX8997_REG_INTSRC,
> >> &irq_src); + ret = regmap_read(max8997->regmap,
> >> MAX8997_REG_INTSRC, &irq_src); if (ret < 0) { dev_err(max8997->dev,
> >> "Failed to read interrupt source: %d\n", ret); @@ -194,8 +181,9 @@
> >> static irqreturn_t max8997_irq_thread(int irq, void *data)
> >>
> >> if (irq_src & MAX8997_IRQSRC_PMIC) { /* PMIC INT1 ~ INT4 */ -
> >> max8997_bulk_read(max8997->i2c, MAX8997_REG_INT1, 4, -
> >> &irq_reg[PMIC_INT1]); + for (i = 0; i < 4; ++i) +
> >> regmap_read(max8997->regmap, + MAX8997_REG_INT1+i,
> >> &irq_reg[PMIC_INT1+i]);
> >
> > Can't you use here one bulk read instead of 4xregmap_read()?
>
> Mixing regmap_read and regmap_bulk_read is not good idea, because the
> first function returns register value as unsigned int, but the second
> returns reg value to each single byte. So it would need to do some
> additional operations, and makes things more complicated.
The only mixing I see would be in reading FLASHSTATUS register which
could be resolved with:
if (irq_src & MAX8997_IRQSRC_FLASH) {
/* Flash Status Interrupt */
unsigned int data;
ret = regmap_read(max8997->regmap, MAX8997_REG_FLASHSTATUS,
&data);
irq_reg[FLASH_STATUS] = data;
}
This isn't more complicated than replacing bulk read with a loop :).
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2014-03-11 15:20 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-03-11 13:58 [PATCH 0/3] mfd: max8997: add regmap support Robert Baldyga
2014-03-11 13:58 ` [PATCH 1/3] mfd: max8997: use regmap to access registers Robert Baldyga
2014-03-11 14:32 ` Krzysztof Kozlowski
2014-03-11 14:59 ` Robert Baldyga
2014-03-11 15:20 ` Krzysztof Kozlowski
2014-03-11 13:58 ` [PATCH 2/3] mfd: max8997: handle IRQs using regmap Robert Baldyga
2014-03-11 14:43 ` Krzysztof Kozlowski
2014-03-11 13:58 ` [PATCH 3/3] mfd: max8997: move regmap handling to function drivers Robert Baldyga
2014-03-11 15:07 ` Krzysztof Kozlowski
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