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Subject[PATCH 28/44] staging: regulator: hi6421v600-regulator: cleanup struct hisi_regulator
Date
There are several fields on this struct that can be removed,
as they already exists at struct regulator_desc.

Remove them, cleaning up the code in the process.

While here, rename it to hi6421v600_regulator_info, in order
to better match the driver's name.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
.../staging/hikey9xx/hi6421v600-regulator.c | 226 +++++++-----------
1 file changed, 92 insertions(+), 134 deletions(-)

diff --git a/drivers/staging/hikey9xx/hi6421v600-regulator.c b/drivers/staging/hikey9xx/hi6421v600-regulator.c
index 9aaafcbb1a36..7d82d11f4b52 100644
--- a/drivers/staging/hikey9xx/hi6421v600-regulator.c
+++ b/drivers/staging/hikey9xx/hi6421v600-regulator.c
@@ -39,21 +39,11 @@
#include <linux/uaccess.h>
#include <linux/spmi.h>

-struct hisi_regulator_register_info {
- u32 ctrl_reg;
- u32 enable_mask;
- u32 eco_mode_mask;
- u32 vset_reg;
- u32 vset_mask;
-};
-
-struct hisi_regulator {
- const char *name;
- struct hisi_regulator_register_info register_info;
- u32 off_on_delay;
- u32 eco_uA;
+struct hi6421v600_regulator {
struct regulator_desc rdesc;
struct hisi_pmic *pmic;
+ u8 eco_mode_mask;
+ u32 eco_uA;
};

static DEFINE_MUTEX(enable_mutex);
@@ -62,29 +52,29 @@ static DEFINE_MUTEX(enable_mutex);
* microseconds after 'since'.
*/

-static int hisi_regulator_is_enabled(struct regulator_dev *dev)
+static int hisi_regulator_is_enabled(struct regulator_dev *rdev)
{
u32 reg_val;
- struct hisi_regulator *sreg = rdev_get_drvdata(dev);
+ struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
struct hisi_pmic *pmic = sreg->pmic;

- reg_val = hisi_pmic_read(pmic, sreg->register_info.ctrl_reg);
- pr_debug("<[%s]: ctrl_reg=0x%x,enable_state=%d>\n",
- __func__, sreg->register_info.ctrl_reg,
- (reg_val & sreg->register_info.enable_mask));
+ reg_val = hisi_pmic_read(pmic, rdev->desc->enable_reg);
+ pr_debug("<[%s]: enable_reg=0x%x,enable_state=%d>\n",
+ __func__, rdev->desc->enable_reg,
+ (reg_val & rdev->desc->enable_mask));

- return ((reg_val & sreg->register_info.enable_mask) != 0);
+ return ((reg_val & rdev->desc->enable_mask) != 0);
}

-static int hisi_regulator_enable(struct regulator_dev *dev)
+static int hisi_regulator_enable(struct regulator_dev *rdev)
{
- struct hisi_regulator *sreg = rdev_get_drvdata(dev);
+ struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
struct hisi_pmic *pmic = sreg->pmic;

/* keep a distance of off_on_delay from last time disabled */
- usleep_range(sreg->off_on_delay, sreg->off_on_delay + 1000);
+ usleep_range(rdev->desc->off_on_delay, rdev->desc->off_on_delay + 1000);

- pr_debug("<[%s]: off_on_delay=%dus>\n", __func__, sreg->off_on_delay);
+ pr_debug("<[%s]: off_on_delay=%dus>\n", __func__, rdev->desc->off_on_delay);

/* cannot enable more than one regulator at one time */
mutex_lock(&enable_mutex);
@@ -92,103 +82,103 @@ static int hisi_regulator_enable(struct regulator_dev *dev)
HISI_REGS_ENA_PROTECT_TIME + 1000);

/* set enable register */
- hisi_pmic_rmw(pmic, sreg->register_info.ctrl_reg,
- sreg->register_info.enable_mask,
- sreg->register_info.enable_mask);
- pr_debug("<[%s]: ctrl_reg=0x%x,enable_mask=0x%x>\n",
- __func__, sreg->register_info.ctrl_reg,
- sreg->register_info.enable_mask);
+ hisi_pmic_rmw(pmic, rdev->desc->enable_reg,
+ rdev->desc->enable_mask,
+ rdev->desc->enable_mask);
+ pr_debug("<[%s]: enable_reg=0x%x,enable_mask=0x%x>\n",
+ __func__, rdev->desc->enable_reg,
+ rdev->desc->enable_mask);

mutex_unlock(&enable_mutex);

return 0;
}

-static int hisi_regulator_disable(struct regulator_dev *dev)
+static int hisi_regulator_disable(struct regulator_dev *rdev)
{
- struct hisi_regulator *sreg = rdev_get_drvdata(dev);
+ struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
struct hisi_pmic *pmic = sreg->pmic;

/* set enable register to 0 */
- hisi_pmic_rmw(pmic, sreg->register_info.ctrl_reg,
- sreg->register_info.enable_mask, 0);
+ hisi_pmic_rmw(pmic, rdev->desc->enable_reg,
+ rdev->desc->enable_mask, 0);

return 0;
}

-static int hisi_regulator_get_voltage(struct regulator_dev *dev)
+static int hisi_regulator_get_voltage(struct regulator_dev *rdev)
{
- struct hisi_regulator *sreg = rdev_get_drvdata(dev);
+ struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
struct hisi_pmic *pmic = sreg->pmic;
u32 reg_val, selector;

/* get voltage selector */
- reg_val = hisi_pmic_read(pmic, sreg->register_info.vset_reg);
- pr_debug("<[%s]: vset_reg=0x%x>\n",
- __func__, sreg->register_info.vset_reg);
+ reg_val = hisi_pmic_read(pmic, rdev->desc->vsel_reg);
+ pr_debug("<[%s]: vsel_reg=0x%x>\n",
+ __func__, rdev->desc->vsel_reg);

- selector = (reg_val & sreg->register_info.vset_mask) >>
- (ffs(sreg->register_info.vset_mask) - 1);
+ selector = (reg_val & rdev->desc->vsel_mask) >>
+ (ffs(rdev->desc->vsel_mask) - 1);

- return sreg->rdesc.ops->list_voltage(dev, selector);
+ return rdev->desc->ops->list_voltage(rdev, selector);
}

-static int hisi_regulator_set_voltage(struct regulator_dev *dev,
+static int hisi_regulator_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV, unsigned int *selector)
{
- struct hisi_regulator *sreg = rdev_get_drvdata(dev);
+ struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
struct hisi_pmic *pmic = sreg->pmic;
u32 vsel;
int ret = 0;

- for (vsel = 0; vsel < sreg->rdesc.n_voltages; vsel++) {
- int uV = sreg->rdesc.volt_table[vsel];
+ for (vsel = 0; vsel < rdev->desc->n_voltages; vsel++) {
+ int uV = rdev->desc->volt_table[vsel];
/* Break at the first in-range value */
if (min_uV <= uV && uV <= max_uV)
break;
}

/* unlikely to happen. sanity test done by regulator core */
- if (unlikely(vsel == sreg->rdesc.n_voltages))
+ if (unlikely(vsel == rdev->desc->n_voltages))
return -EINVAL;

*selector = vsel;
/* set voltage selector */
- hisi_pmic_rmw(pmic, sreg->register_info.vset_reg,
- sreg->register_info.vset_mask,
- vsel << (ffs(sreg->register_info.vset_mask) - 1));
+ hisi_pmic_rmw(pmic, rdev->desc->vsel_reg,
+ rdev->desc->vsel_mask,
+ vsel << (ffs(rdev->desc->vsel_mask) - 1));

- pr_debug("<[%s]: vset_reg=0x%x, vset_mask=0x%x, value=0x%x>\n",
+ pr_debug("<[%s]: vsel_reg=0x%x, vsel_mask=0x%x, value=0x%x>\n",
__func__,
- sreg->register_info.vset_reg,
- sreg->register_info.vset_mask,
- vsel << (ffs(sreg->register_info.vset_mask) - 1));
+ rdev->desc->vsel_reg,
+ rdev->desc->vsel_mask,
+ vsel << (ffs(rdev->desc->vsel_mask) - 1));

return ret;
}

-static unsigned int hisi_regulator_get_mode(struct regulator_dev *dev)
+static unsigned int hisi_regulator_get_mode(struct regulator_dev *rdev)
{
- struct hisi_regulator *sreg = rdev_get_drvdata(dev);
+ struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
struct hisi_pmic *pmic = sreg->pmic;
u32 reg_val;

- reg_val = hisi_pmic_read(pmic, sreg->register_info.ctrl_reg);
- pr_debug("<[%s]: reg_val=%d, ctrl_reg=0x%x, eco_mode_mask=0x%x>\n",
+ reg_val = hisi_pmic_read(pmic, rdev->desc->enable_reg);
+ pr_debug("<[%s]: reg_val=%d, enable_reg=0x%x, eco_mode_mask=0x%x>\n",
__func__, reg_val,
- sreg->register_info.ctrl_reg,
- sreg->register_info.eco_mode_mask);
+ rdev->desc->enable_reg,
+ sreg->eco_mode_mask);

- if (reg_val & sreg->register_info.eco_mode_mask)
+ if (reg_val & sreg->eco_mode_mask)
return REGULATOR_MODE_IDLE;
else
return REGULATOR_MODE_NORMAL;
}

-static int hisi_regulator_set_mode(struct regulator_dev *dev,
+static int hisi_regulator_set_mode(struct regulator_dev *rdev,
unsigned int mode)
{
- struct hisi_regulator *sreg = rdev_get_drvdata(dev);
+ struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
struct hisi_pmic *pmic = sreg->pmic;
u32 eco_mode;

@@ -204,23 +194,23 @@ static int hisi_regulator_set_mode(struct regulator_dev *dev,
}

/* set mode */
- hisi_pmic_rmw(pmic, sreg->register_info.ctrl_reg,
- sreg->register_info.eco_mode_mask,
- eco_mode << (ffs(sreg->register_info.eco_mode_mask) - 1));
+ hisi_pmic_rmw(pmic, rdev->desc->enable_reg,
+ sreg->eco_mode_mask,
+ eco_mode << (ffs(sreg->eco_mode_mask) - 1));

- pr_debug("<[%s]: ctrl_reg=0x%x, eco_mode_mask=0x%x, value=0x%x>\n",
+ pr_debug("<[%s]: enable_reg=0x%x, eco_mode_mask=0x%x, value=0x%x>\n",
__func__,
- sreg->register_info.ctrl_reg,
- sreg->register_info.eco_mode_mask,
- eco_mode << (ffs(sreg->register_info.eco_mode_mask) - 1));
+ rdev->desc->enable_reg,
+ sreg->eco_mode_mask,
+ eco_mode << (ffs(sreg->eco_mode_mask) - 1));
return 0;
}

-static unsigned int hisi_regulator_get_optimum_mode(struct regulator_dev *dev,
+static unsigned int hisi_regulator_get_optimum_mode(struct regulator_dev *rdev,
int input_uV, int output_uV,
int load_uA)
{
- struct hisi_regulator *sreg = rdev_get_drvdata(dev);
+ struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);

if (load_uA || ((unsigned int)load_uA > sreg->eco_uA))
return REGULATOR_MODE_NORMAL;
@@ -228,42 +218,43 @@ static unsigned int hisi_regulator_get_optimum_mode(struct regulator_dev *dev,
return REGULATOR_MODE_IDLE;
}

-static int hisi_dt_parse_common(struct hisi_regulator *sreg,
- struct platform_device *pdev)
+static int hisi_dt_parse(struct platform_device *pdev,
+ struct hi6421v600_regulator *sreg,
+ struct regulator_desc *rdesc)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
- struct regulator_desc *rdesc = &sreg->rdesc;
unsigned int register_info[3] = {0};
- int ret = 0;
+ unsigned int *v_table;
+ int ret;

- /* parse .register_info.ctrl_reg */
+ /* parse .register_info.enable_reg */
ret = of_property_read_u32_array(np, "hisilicon,hisi-ctrl",
register_info, 3);
if (ret) {
dev_err(dev, "no hisilicon,hisi-ctrl property set\n");
- goto dt_parse_common_end;
+ return ret;
}
- sreg->register_info.ctrl_reg = register_info[0];
- sreg->register_info.enable_mask = register_info[1];
- sreg->register_info.eco_mode_mask = register_info[2];
+ rdesc->enable_reg = register_info[0];
+ rdesc->enable_mask = register_info[1];
+ sreg->eco_mode_mask = register_info[2];

- /* parse .register_info.vset_reg */
+ /* parse .register_info.vsel_reg */
ret = of_property_read_u32_array(np, "hisilicon,hisi-vset",
register_info, 2);
if (ret) {
dev_err(dev, "no hisilicon,hisi-vset property set\n");
- goto dt_parse_common_end;
+ return ret;
}
- sreg->register_info.vset_reg = register_info[0];
- sreg->register_info.vset_mask = register_info[1];
+ rdesc->vsel_reg = register_info[0];
+ rdesc->vsel_mask = register_info[1];

/* parse .off-on-delay */
ret = of_property_read_u32(np, "hisilicon,hisi-off-on-delay-us",
- &sreg->off_on_delay);
+ &rdesc->off_on_delay);
if (ret) {
dev_err(dev, "no hisilicon,hisi-off-on-delay-us property set\n");
- goto dt_parse_common_end;
+ return ret;
}

/* parse .enable_time */
@@ -271,7 +262,7 @@ static int hisi_dt_parse_common(struct hisi_regulator *sreg,
&rdesc->enable_time);
if (ret) {
dev_err(dev, "no hisilicon,hisi-enable-time-us property set\n");
- goto dt_parse_common_end;
+ return ret;
}

/* parse .eco_uA */
@@ -282,56 +273,24 @@ static int hisi_dt_parse_common(struct hisi_regulator *sreg,
ret = 0;
}

-dt_parse_common_end:
- return ret;
-}
+ /* parse volt_table */

-static int hisi_dt_parse_ldo(struct hisi_regulator *sreg,
- struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct device_node *np = dev->of_node;
- struct regulator_desc *rdesc = &sreg->rdesc;
- unsigned int *v_table;
- int ret = 0;
+ rdesc->n_voltages = of_property_count_u32_elems(np, "hisilicon,hisi-vset-table");

- /* parse .n_voltages, and .volt_table */
- ret = of_property_read_u32(np, "hisilicon,hisi-n-voltages",
- &rdesc->n_voltages);
- if (ret) {
- dev_err(dev, "no hisilicon,hisi-n-voltages property set\n");
- goto dt_parse_ldo_end;
- }
-
- /* alloc space for .volt_table */
v_table = devm_kzalloc(dev, sizeof(unsigned int) * rdesc->n_voltages,
GFP_KERNEL);
- if (unlikely(!v_table)) {
- ret = -ENOMEM;
- dev_err(dev, "no memory for .volt_table\n");
- goto dt_parse_ldo_end;
- }
+ if (unlikely(!v_table))
+ return -ENOMEM;
+ rdesc->volt_table = v_table;

ret = of_property_read_u32_array(np, "hisilicon,hisi-vset-table",
v_table, rdesc->n_voltages);
if (ret) {
dev_err(dev, "no hisilicon,hisi-vset-table property set\n");
- goto dt_parse_ldo_end1;
+ return ret;
}
- rdesc->volt_table = v_table;

- /* parse hisi regulator's dt common part */
- ret = hisi_dt_parse_common(sreg, pdev);
- if (ret) {
- dev_err(dev, "failure in hisi_dt_parse_common\n");
- goto dt_parse_ldo_end1;
- }
-
- return ret;
-
-dt_parse_ldo_end1:
-dt_parse_ldo_end:
- return ret;
+ return 0;
}

static struct regulator_ops hisi_ldo_rops = {
@@ -364,7 +323,7 @@ static int hisi_regulator_probe_ldo(struct platform_device *pdev,
struct device *dev = &pdev->dev;
struct regulator_desc *rdesc;
struct regulator_dev *rdev;
- struct hisi_regulator *sreg = NULL;
+ struct hi6421v600_regulator *sreg = NULL;
struct regulator_init_data *initdata;
struct regulator_config config = { };
struct regulation_constraints *constraint;
@@ -401,11 +360,10 @@ static int hisi_regulator_probe_ldo(struct platform_device *pdev,
if (!sreg)
return -ENOMEM;

- sreg->name = initdata->constraints.name;
sreg->pmic = pmic;
rdesc = &sreg->rdesc;

- rdesc->name = sreg->name;
+ rdesc->name = initdata->constraints.name;
rdesc->ops = &hisi_ldo_rops;
rdesc->type = REGULATOR_VOLTAGE;
rdesc->min_uV = initdata->constraints.min_uV;
@@ -415,7 +373,7 @@ static int hisi_regulator_probe_ldo(struct platform_device *pdev,
initdata->supply_regulator = supplyname;

/* parse device tree data for regulator specific */
- ret = hisi_dt_parse_ldo(sreg, pdev);
+ ret = hisi_dt_parse(pdev, sreg, rdesc);
if (ret) {
dev_err(dev, "device tree parameter parse error!\n");
goto hisi_probe_end;
@@ -501,13 +459,13 @@ static int hisi_regulator_probe(struct platform_device *pdev)
static int hisi_regulator_remove(struct platform_device *pdev)
{
struct regulator_dev *rdev = dev_get_drvdata(&pdev->dev);
- struct hisi_regulator *sreg = rdev_get_drvdata(rdev);
+ struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);

regulator_unregister(rdev);

/* TODO: should i worry about that? devm_kzalloc */
- if (sreg->rdesc.volt_table)
- devm_kfree(&pdev->dev, (unsigned int *)sreg->rdesc.volt_table);
+ if (rdev->desc->volt_table)
+ devm_kfree(&pdev->dev, (unsigned int *)rdev->desc->volt_table);

kfree(sreg);

--
2.26.2
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