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staging: hikey9xx: spmi driver: convert to regmap

Browse Source 
Instead of doing its own SPMI I/O implementation, use the
already-existing regmap one.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/7084885f3007ca5daf0d5bc85d038e26ee82dc0d.1611949675.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mauro Carvalho Chehab 2021-01-29 20:51:47 +01:00 committed by Greg Kroah-Hartman
parent 1f92798cbe
commit fb02e3ebfb
4 changed files with 54 additions and 96 deletions
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2
drivers/staging/hikey9xx/Kconfig
View File

@ -29,6 +29,7 @@ config MFD_HI6421_SPMI
depends on OF
depends on SPMI
select MFD_CORE
select REGMAP_SPMI
help
Add support for HiSilicon Hi6421v600 SPMI PMIC. Hi6421 includes
multi-functions, such as regulators, RTC, codec, Coulomb counter,
@ -44,6 +45,7 @@ config REGULATOR_HI6421V600
tristate "HiSilicon Hi6421v600 PMIC voltage regulator support"
depends on MFD_HI6421_SPMI && OF
depends on REGULATOR
select REGMAP
help
This driver provides support for the voltage regulators on
HiSilicon Hi6421v600 PMU / Codec IC.

115
drivers/staging/hikey9xx/hi6421-spmi-pmic.c
View File

@ -41,81 +41,22 @@ static const struct mfd_cell hi6421v600_devs[] = {
{ .name = "hi6421v600-regulator", },
};
/*
* The PMIC register is only 8-bit.
* Hisilicon SoC use hardware to map PMIC register into SoC mapping.
* At here, we are accessing SoC register with 32-bit.
*/
int hi6421_spmi_pmic_read(struct hi6421_spmi_pmic *pmic, int reg)
static irqreturn_t hi6421_spmi_irq_handler(int irq, void *priv)
{
struct spmi_device *pdev;
u8 read_value = 0;
u32 ret;
pdev = to_spmi_device(pmic->dev);
if (!pdev) {
pr_err("%s: pdev get failed!\n", __func__);
return -ENODEV;
}
ret = spmi_ext_register_readl(pdev, reg, &read_value, 1);
if (ret) {
pr_err("%s: spmi_ext_register_readl failed!\n", __func__);
return ret;
}
return read_value;
}
EXPORT_SYMBOL(hi6421_spmi_pmic_read);
int hi6421_spmi_pmic_write(struct hi6421_spmi_pmic *pmic, int reg, u32 val)
{
struct spmi_device *pdev;
u32 ret;
pdev = to_spmi_device(pmic->dev);
if (!pdev) {
pr_err("%s: pdev get failed!\n", __func__);
return -ENODEV;
}
ret = spmi_ext_register_writel(pdev, reg, (unsigned char *)&val, 1);
if (ret)
pr_err("%s: spmi_ext_register_writel failed!\n", __func__);
return ret;
}
EXPORT_SYMBOL(hi6421_spmi_pmic_write);
int hi6421_spmi_pmic_rmw(struct hi6421_spmi_pmic *pmic, int reg,
u32 mask, u32 bits)
{
unsigned long flags;
u32 data;
int ret;
spin_lock_irqsave(&pmic->lock, flags);
data = hi6421_spmi_pmic_read(pmic, reg) & ~mask;
data |= mask & bits;
ret = hi6421_spmi_pmic_write(pmic, reg, data);
spin_unlock_irqrestore(&pmic->lock, flags);
return ret;
}
EXPORT_SYMBOL(hi6421_spmi_pmic_rmw);
static irqreturn_t hi6421_spmi_irq_handler(int irq, void *data)
{
struct hi6421_spmi_pmic *pmic = (struct hi6421_spmi_pmic *)data;
struct hi6421_spmi_pmic *pmic = (struct hi6421_spmi_pmic *)priv;
unsigned long pending;
unsigned int data;
int i, offset;
for (i = 0; i < HISI_IRQ_ARRAY; i++) {
pending = hi6421_spmi_pmic_read(pmic, (i + SOC_PMIC_IRQ0_ADDR));
pending &= HISI_MASK_FIELD;
if (pending != 0)
pr_debug("pending[%d]=0x%lx\n\r", i, pending);
regmap_read(pmic->map, offset, &data);
data &= HISI_MASK_FIELD;
if (data != 0)
pr_debug("data[%d]=0x%d\n\r", i, data);
regmap_write(pmic->map, i + SOC_PMIC_IRQ0_ADDR, data);
hi6421_spmi_pmic_write(pmic, (i + SOC_PMIC_IRQ0_ADDR), pending);
/* for_each_set_bit() macro requires unsigned long */
pending = data;
/* solve powerkey order */
if ((i == HISI_IRQ_KEY_NUM) &&
@ -137,16 +78,18 @@ static irqreturn_t hi6421_spmi_irq_handler(int irq, void *data)
static void hi6421_spmi_irq_mask(struct irq_data *d)
{
struct hi6421_spmi_pmic *pmic = irq_data_get_irq_chip_data(d);
u32 data, offset;
unsigned long flags;
unsigned int data;
u32 offset;
offset = (irqd_to_hwirq(d) >> 3);
offset += SOC_PMIC_IRQ_MASK_0_ADDR;
spin_lock_irqsave(&pmic->lock, flags);
data = hi6421_spmi_pmic_read(pmic, offset);
regmap_read(pmic->map, offset, &data);
data |= (1 << (irqd_to_hwirq(d) & 0x07));
hi6421_spmi_pmic_write(pmic, offset, data);
regmap_write(pmic->map, offset, data);
spin_unlock_irqrestore(&pmic->lock, flags);
}
@ -160,9 +103,9 @@ static void hi6421_spmi_irq_unmask(struct irq_data *d)
offset += SOC_PMIC_IRQ_MASK_0_ADDR;
spin_lock_irqsave(&pmic->lock, flags);
data = hi6421_spmi_pmic_read(pmic, offset);
regmap_read(pmic->map, offset, &data);
data &= ~(1 << (irqd_to_hwirq(d) & 0x07));
hi6421_spmi_pmic_write(pmic, offset, data);
regmap_write(pmic->map, offset, data);
spin_unlock_irqrestore(&pmic->lock, flags);
}
@ -194,27 +137,36 @@ static const struct irq_domain_ops hi6421_spmi_domain_ops = {
static void hi6421_spmi_pmic_irq_prc(struct hi6421_spmi_pmic *pmic)
{
int i, pending;
int i;
unsigned int pending;
for (i = 0 ; i < HISI_IRQ_ARRAY; i++)
hi6421_spmi_pmic_write(pmic, SOC_PMIC_IRQ_MASK_0_ADDR + i,
regmap_write(pmic->map, SOC_PMIC_IRQ_MASK_0_ADDR + i,
HISI_MASK_STATE);
for (i = 0 ; i < HISI_IRQ_ARRAY; i++) {
pending = hi6421_spmi_pmic_read(pmic, SOC_PMIC_IRQ0_ADDR + i);
regmap_read(pmic->map, SOC_PMIC_IRQ0_ADDR + i, &pending);
pr_debug("PMU IRQ address value:irq[0x%x] = 0x%x\n",
SOC_PMIC_IRQ0_ADDR + i, pending);
hi6421_spmi_pmic_write(pmic, SOC_PMIC_IRQ0_ADDR + i,
HISI_MASK_STATE);
regmap_write(pmic->map, SOC_PMIC_IRQ0_ADDR + i,
HISI_MASK_STATE);
}
}
static const struct regmap_config spmi_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
.max_register = 0xffff,
.fast_io = true
};
static int hi6421_spmi_pmic_probe(struct spmi_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct hi6421_spmi_pmic *pmic;
struct regmap *map;
unsigned int virq;
int ret, i;
@ -222,9 +174,14 @@ static int hi6421_spmi_pmic_probe(struct spmi_device *pdev)
if (!pmic)
return -ENOMEM;
map = devm_regmap_init_spmi_ext(pdev, &spmi_regmap_config);
if (IS_ERR(map))
return PTR_ERR(map);
spin_lock_init(&pmic->lock);
pmic->dev = dev;
pmic->map = map;
pmic->gpio = of_get_gpio(np, 0);
if (pmic->gpio < 0)

26
drivers/staging/hikey9xx/hi6421v600-regulator.c
View File

@ -12,6 +12,7 @@
#include <linux/mfd/hi6421-spmi-pmic.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/spmi.h>
@ -100,7 +101,7 @@ static int hi6421_spmi_regulator_is_enabled(struct regulator_dev *rdev)
struct hi6421_spmi_pmic *pmic = sreg->pmic;
u32 reg_val;
reg_val = hi6421_spmi_pmic_read(pmic, rdev->desc->enable_reg);
regmap_read(pmic->map, rdev->desc->enable_reg, &reg_val);
return ((reg_val & rdev->desc->enable_mask) != 0);
}
@ -114,9 +115,9 @@ static int hi6421_spmi_regulator_enable(struct regulator_dev *rdev)
/* cannot enable more than one regulator at one time */
mutex_lock(&sreg->enable_mutex);
ret = hi6421_spmi_pmic_rmw(pmic, rdev->desc->enable_reg,
rdev->desc->enable_mask,
rdev->desc->enable_mask);
ret = regmap_update_bits(pmic->map, rdev->desc->enable_reg,
rdev->desc->enable_mask,
rdev->desc->enable_mask);
/* Avoid powering up multiple devices at the same time */
usleep_range(rdev->desc->off_on_delay, rdev->desc->off_on_delay + 60);
@ -131,8 +132,8 @@ static int hi6421_spmi_regulator_disable(struct regulator_dev *rdev)
struct hi6421_spmi_reg_info *sreg = rdev_get_drvdata(rdev);
struct hi6421_spmi_pmic *pmic = sreg->pmic;
return hi6421_spmi_pmic_rmw(pmic, rdev->desc->enable_reg,
rdev->desc->enable_mask, 0);
return regmap_update_bits(pmic->map, rdev->desc->enable_reg,
rdev->desc->enable_mask, 0);
}
static int hi6421_spmi_regulator_get_voltage_sel(struct regulator_dev *rdev)
@ -141,7 +142,7 @@ static int hi6421_spmi_regulator_get_voltage_sel(struct regulator_dev *rdev)
struct hi6421_spmi_pmic *pmic = sreg->pmic;
u32 reg_val;
reg_val = hi6421_spmi_pmic_read(pmic, rdev->desc->vsel_reg);
regmap_read(pmic->map, rdev->desc->vsel_reg, &reg_val);
return (reg_val & rdev->desc->vsel_mask) >> (ffs(rdev->desc->vsel_mask) - 1);
}
@ -159,8 +160,8 @@ static int hi6421_spmi_regulator_set_voltage_sel(struct regulator_dev *rdev,
reg_val = selector << (ffs(rdev->desc->vsel_mask) - 1);
/* set voltage selector */
return hi6421_spmi_pmic_rmw(pmic, rdev->desc->vsel_reg,
rdev->desc->vsel_mask, reg_val);
return regmap_update_bits(pmic->map, rdev->desc->vsel_reg,
rdev->desc->vsel_mask, reg_val);
}
static unsigned int hi6421_spmi_regulator_get_mode(struct regulator_dev *rdev)
@ -169,7 +170,7 @@ static unsigned int hi6421_spmi_regulator_get_mode(struct regulator_dev *rdev)
struct hi6421_spmi_pmic *pmic = sreg->pmic;
u32 reg_val;
reg_val = hi6421_spmi_pmic_read(pmic, rdev->desc->enable_reg);
regmap_read(pmic->map, rdev->desc->enable_reg, &reg_val);
if (reg_val & sreg->eco_mode_mask)
return REGULATOR_MODE_IDLE;
@ -195,8 +196,8 @@ static int hi6421_spmi_regulator_set_mode(struct regulator_dev *rdev,
return -EINVAL;
}
return hi6421_spmi_pmic_rmw(pmic, rdev->desc->enable_reg,
sreg->eco_mode_mask, val);
return regmap_update_bits(pmic->map, rdev->desc->enable_reg,
sreg->eco_mode_mask, val);
}
static unsigned int
@ -304,6 +305,7 @@ static int hi6421_spmi_regulator_probe(struct platform_device *pdev)
config.dev = pdev->dev.parent;
config.driver_data = sreg;
config.regmap = pmic->map;
rdev = devm_regulator_register(dev, &info->desc, &config);
if (IS_ERR(rdev)) {

7
include/linux/mfd/hi6421-spmi-pmic.h
View File

@ -12,6 +12,7 @@
#define __HISI_PMIC_H
#include <linux/irqdomain.h>
#include <linux/regmap.h>
#define HISI_ECO_MODE_ENABLE (1)
#define HISI_ECO_MODE_DISABLE (0)
@ -25,13 +26,9 @@ struct hi6421_spmi_pmic {
int irq;
int gpio;
unsigned int *irqs;
struct regmap *map;
};
int hi6421_spmi_pmic_read(struct hi6421_spmi_pmic *pmic, int reg);
int hi6421_spmi_pmic_write(struct hi6421_spmi_pmic *pmic, int reg, u32 val);
int hi6421_spmi_pmic_rmw(struct hi6421_spmi_pmic *pmic, int reg,
u32 mask, u32 bits);
enum hi6421_spmi_pmic_irq_list {
OTMP = 0,
VBUS_CONNECT,