[PATCH v3 24/44] staging: regulator: hi6421v600-regulator: get rid of unused code

Mauro Carvalho Chehab
2020-08-17T07:12:36Z

Get rid of the sysfs code and other parts of the driver
which aren't needed upstream.

If needed later, this patch can be (partially?) reversed.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
.../staging/hikey9xx/hi6421v600-regulator.c | 196 +-----------------
1 file changed, 8 insertions(+), 188 deletions(-)

diff --git a/drivers/staging/hikey9xx/hi6421v600-regulator.c b/drivers/staging/hikey9xx/hi6421v600-regulator.c
index 941bfe32bf5b..7bc0ae27b110 100644
--- a/drivers/staging/hikey9xx/hi6421v600-regulator.c
+++ b/drivers/staging/hikey9xx/hi6421v600-regulator.c
@@ -34,19 +34,10 @@
#include <linux/delay.h>
#include <linux/time.h>
#include <linux/version.h>
-#ifdef CONFIG_HISI_PMIC_DEBUG
-#include <linux/debugfs.h>
-#endif
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/spmi.h>

-#if 1
-#define BRAND_DEBUG(args...) pr_debug(args);
-#else
-#define BRAND_DEBUG(args...)
-#endif
-
struct hisi_regulator_register_info {
u32 ctrl_reg;
u32 enable_mask;
@@ -110,7 +101,7 @@ static int hisi_regulator_is_enabled(struct regulator_dev *dev)
struct hisi_pmic *pmic = rdev_to_pmic(dev);

reg_val = hisi_pmic_read(pmic, sreg->register_info.ctrl_reg);
- BRAND_DEBUG("<[%s]: ctrl_reg=0x%x,enable_state=%d>\n", __func__, 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));

return ((reg_val & sreg->register_info.enable_mask) != 0);
@@ -124,7 +115,7 @@ static int hisi_regulator_enable(struct regulator_dev *dev)
/* keep a distance of off_on_delay from last time disabled */
ensured_time_after(sreg->last_off_time, sreg->off_on_delay);

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

/* cannot enable more than one regulator at one time */
mutex_lock(&enable_mutex);
@@ -134,7 +125,7 @@ static int hisi_regulator_enable(struct regulator_dev *dev)
hisi_pmic_rmw(pmic, sreg->register_info.ctrl_reg,
sreg->register_info.enable_mask,
sreg->register_info.enable_mask);
- BRAND_DEBUG("<[%s]: ctrl_reg=0x%x,enable_mask=0x%x>\n", __func__, sreg->register_info.ctrl_reg,\
+ pr_debug("<[%s]: ctrl_reg=0x%x,enable_mask=0x%x>\n", __func__, sreg->register_info.ctrl_reg,\
sreg->register_info.enable_mask);

do_gettimeofday(&last_enabled);
@@ -165,7 +156,7 @@ static int hisi_regulator_get_voltage(struct regulator_dev *dev)

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

selector = (reg_val & sreg->register_info.vset_mask) >>
(ffs(sreg->register_info.vset_mask) - 1);
@@ -198,7 +189,7 @@ static int hisi_regulator_set_voltage(struct regulator_dev *dev,
sreg->register_info.vset_mask,
vsel << (ffs(sreg->register_info.vset_mask) - 1));

- BRAND_DEBUG("<[%s]: vset_reg=0x%x, vset_mask=0x%x, value=0x%x>\n", __func__,\
+ pr_debug("<[%s]: vset_reg=0x%x, vset_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)\
@@ -214,7 +205,7 @@ static unsigned int hisi_regulator_get_mode(struct regulator_dev *dev)
u32 reg_val;

reg_val = hisi_pmic_read(pmic, sreg->register_info.ctrl_reg);
- BRAND_DEBUG("<[%s]: reg_val=%d, ctrl_reg=0x%x, eco_mode_mask=0x%x>\n", __func__, reg_val,\
+ pr_debug("<[%s]: reg_val=%d, ctrl_reg=0x%x, eco_mode_mask=0x%x>\n", __func__, reg_val,\
sreg->register_info.ctrl_reg,\
sreg->register_info.eco_mode_mask\
);
@@ -248,7 +239,7 @@ static int hisi_regulator_set_mode(struct regulator_dev *dev,
sreg->register_info.eco_mode_mask,
eco_mode << (ffs(sreg->register_info.eco_mode_mask) - 1));

- BRAND_DEBUG("<[%s]: ctrl_reg=0x%x, eco_mode_mask=0x%x, value=0x%x>\n", __func__,\
+ pr_debug("<[%s]: ctrl_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)\
@@ -403,147 +394,6 @@ static struct of_device_id of_hisi_regulator_match_tbl[] = {
{ /* end */ }
};

-#ifdef CONFIG_HISI_PMIC_DEBUG
-extern void get_current_regulator_dev(struct seq_file *s);
-extern void set_regulator_state(char *ldo_name, int value);
-extern void get_regulator_state(char *ldo_name);
-extern int set_regulator_voltage(char *ldo_name, unsigned int vol_value);
-
-u32 pmu_atoi(char *s)
-{
- char *p = s;
- char c;
- u64 ret = 0;
- if (s == NULL)
- return 0;
- while ((c = *p++) != '\0') {
- if ('0' <= c && c <= '9') {
- ret *= 10;
- ret += (u64)((unsigned char)c - '0');
- if (ret > U32_MAX)
- return 0;
- } else {
- break;
- }
- }
- return (u32)ret;
-}
-static int dbg_hisi_regulator_show(struct seq_file *s, void *data)
-{
- seq_printf(s, "\n\r");
- seq_printf(s, "%-13s %-15s %-15s %-15s %-15s\n\r",
- "LDO_NAME", "ON/OFF", "Use_count", "Open_count", "Always_on");
- seq_printf(s, "-----------------------------------------"
- "-----------------------------------------------\n\r");
- get_current_regulator_dev(s);
- return 0;
-}
-
-static int dbg_hisi_regulator_open(struct inode *inode, struct file *file)
-{
- return single_open(file, dbg_hisi_regulator_show, inode->i_private);
-}
-
-static const struct file_operations debug_regulator_state_fops = {
- .open = dbg_hisi_regulator_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int dbg_control_regulator_show(struct seq_file *s, void *data)
-{
- printk(" \n\r \
- ---------------------------------------------------------------------------------\n\r \
- |usage: |\n\r \
- | S = state R = read V = voltage |\n\r \
- | set ldo state and voltage |\n\r \
- | get ldo state and current voltage |\n\r \
- |example: |\n\r \
- | echo S ldo16 0 > control_regulator :disable ldo16 |\n\r \
- | echo S ldo16 1 > control_regulator :enable ldo16 |\n\r \
- | echo R ldo16 > control_regulator :get ldo16 state and voltage |\n\r \
- | echo V ldo16 xxx > control_regulator :set ldo16 voltage |\n\r \
- ---------------------------------------------------------------------------------\n\r");
- return 0;
-}
-static ssize_t dbg_control_regulator_set_value(struct file *filp, const char __user *buffer,
- size_t count, loff_t *ppos)
-{
- char tmp[128] = {0};
- char ptr[128] = {0};
- char *vol = NULL;
- char num = 0;
- unsigned int i;
- int next_flag = 1;
-
- if (count >= 128) {
- pr_info("error! buffer size big than internal buffer\n");
- return -EFAULT;
- }
-
- if (copy_from_user(tmp, buffer, count)) {
- pr_info("error!\n");
- return -EFAULT;
- }
-
- if (tmp[0] == 'R' || tmp[0] == 'r') {
- for (i = 2; i < (count - 1); i++) {
- ptr[i - 2] = tmp[i];
- }
- ptr[i - 2] = '\0';
- get_regulator_state(ptr);
- } else if (tmp[0] == 'S' || tmp[0] == 's') {
- for (i = 2; i < (count - 1); i++) {
- if (tmp[i] == ' ') {
- next_flag = 0;
- ptr[i - 2] = '\0';
- continue;
- }
- if (next_flag) {
- ptr[i - 2] = tmp[i];
- } else {
- num = tmp[i] - 48;
- }
- }
- set_regulator_state(ptr, num);
- } else if (tmp[0] == 'V' || tmp[0] == 'v') {
- for (i = 2; i < (count - 1); i++) {
- if (tmp[i] == ' ') {
- next_flag = 0;
- ptr[i - 2] = '\0';
- continue;
- }
- if (next_flag) {
- ptr[i - 2] = tmp[i];
- } else {
- vol = &tmp[i];
- break;
- }
- }
- set_regulator_voltage(ptr, pmu_atoi(vol));
- }
-
- *ppos += count;
-
- return count;
-}
-
-static int dbg_control_regulator_open(struct inode *inode, struct file *file)
-{
- file->private_data = inode->i_private;
- return single_open(file, dbg_control_regulator_show, &inode->i_private);
-}
-
-static const struct file_operations set_control_regulator_fops = {
- .open = dbg_control_regulator_open,
- .read = seq_read,
- .write = dbg_control_regulator_set_value,
- .llseek = seq_lseek,
- .release = single_release,
-};
-#endif
-
static int hisi_regulator_probe(struct spmi_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -556,10 +406,6 @@ static int hisi_regulator_probe(struct spmi_device *pdev)
const struct of_device_id *match;
struct regulation_constraints *constraint;
const char *supplyname = NULL;
-#ifdef CONFIG_HISI_PMIC_DEBUG
- struct dentry *d;
- static int debugfs_flag;
-#endif
unsigned int temp_modes;

const struct hisi_regulator *template = NULL;
@@ -572,11 +418,7 @@ static int hisi_regulator_probe(struct spmi_device *pdev)
}

template = match->data;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(3, 13, 0))
initdata = of_get_regulator_init_data(dev, np, NULL);
-#else
- initdata = of_get_regulator_init_data(dev, np);
-#endif
if (NULL == initdata) {
pr_err("get regulator init data error !\n");
return -EINVAL;
@@ -636,32 +478,10 @@ static int hisi_regulator_probe(struct spmi_device *pdev)
goto hisi_probe_end;
}

- BRAND_DEBUG("[%s]:valid_modes_mask[0x%x], valid_ops_mask[0x%x]\n", rdesc->name,\
+ pr_debug("[%s]:valid_modes_mask[0x%x], valid_ops_mask[0x%x]\n", rdesc->name,\
constraint->valid_modes_mask, constraint->valid_ops_mask);

dev_set_drvdata(dev, rdev);
-#ifdef CONFIG_HISI_PMIC_DEBUG
- if (debugfs_flag == 0) {
- d = debugfs_create_dir("hisi_regulator_debugfs", NULL);
- if (!d) {
- dev_err(dev, "failed to create hisi regulator debugfs dir !\n");
- ret = -ENOMEM;
- goto hisi_probe_fail;
- }
- (void) debugfs_create_file("regulator_state", S_IRUSR,
- d, NULL, &debug_regulator_state_fops);
-
- (void) debugfs_create_file("control_regulator", S_IRUSR,
- d, NULL, &set_control_regulator_fops);
- debugfs_flag = 1;
- }
-#endif
-
-#ifdef CONFIG_HISI_PMIC_DEBUG
-hisi_probe_fail:
- if (ret)
- regulator_unregister(rdev);
-#endif
hisi_probe_end:
if (ret)
kfree(sreg);
--
2.26.2