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dm: pmic: Split output from function

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The regulator_autoset() function mixes printf() output and PMIC adjustment
code. It provides a boolean to control the output. It is better to avoid
missing logic and output, and this permits a smaller SPL code size. So
split the output into a separate function.

Also rename the function to have a by_name() suffix, since we would like
to be able to pass a device when we know it, and thus avoid the name
search.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
This commit is contained in:
Simon Glass 2015-06-23 15:38:58 -06:00
parent 7837ceab1e
commit 3b55d30f6f
4 changed files with 63 additions and 75 deletions
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98
drivers/power/regulator/regulator-uclass.c
View file

@ -138,87 +138,57 @@ int regulator_get_by_devname(const char *devname, struct udevice **devp)
return uclass_get_device_by_name(UCLASS_REGULATOR, devname, devp);
}
static int failed(int ret, bool verbose, const char *fmt, ...)
int regulator_autoset(struct udevice *dev)
{
va_list args;
char buf[64];
struct dm_regulator_uclass_platdata *uc_pdata;
int ret = 0;
if (verbose == false)
return ret;
uc_pdata = dev_get_uclass_platdata(dev);
if (!uc_pdata->always_on && !uc_pdata->boot_on)
return -EMEDIUMTYPE;
va_start(args, fmt);
vscnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
printf(buf);
if (uc_pdata->flags & REGULATOR_FLAG_AUTOSET_UV)
ret = regulator_set_value(dev, uc_pdata->min_uV);
if (!ret && (uc_pdata->flags & REGULATOR_FLAG_AUTOSET_UA))
ret = regulator_set_current(dev, uc_pdata->min_uA);
if (!ret)
return 0;
printf(" (ret: %d)", ret);
ret = regulator_set_enable(dev, true);
return ret;
}
int regulator_autoset(const char *platname,
struct udevice **devp,
bool verbose)
static void regulator_show(struct udevice *dev, int ret)
{
struct dm_regulator_uclass_platdata *uc_pdata;
uc_pdata = dev_get_uclass_platdata(dev);
printf("%s@%s: ", dev->name, uc_pdata->name);
if (uc_pdata->flags & REGULATOR_FLAG_AUTOSET_UV)
printf("set %d uV", uc_pdata->min_uV);
if (uc_pdata->flags & REGULATOR_FLAG_AUTOSET_UA)
printf("; set %d uA", uc_pdata->min_uA);
printf("; enabling");
if (ret)
printf(" (ret: %d)\n", ret);
printf("\n");
}
int regulator_autoset_by_name(const char *platname, struct udevice **devp)
{
struct udevice *dev;
int ret;
if (devp)
*devp = NULL;
ret = regulator_get_by_platname(platname, &dev);
if (devp)
*devp = dev;
if (ret) {
error("Can get the regulator: %s!", platname);
debug("Can get the regulator: %s!", platname);
return ret;
}
uc_pdata = dev_get_uclass_platdata(dev);
if (!uc_pdata) {
error("Can get the regulator %s uclass platdata!", platname);
return -ENXIO;
}
if (!uc_pdata->always_on && !uc_pdata->boot_on)
goto retdev;
if (verbose)
printf("%s@%s: ", dev->name, uc_pdata->name);
/* Those values are optional (-ENODATA if unset) */
if ((uc_pdata->min_uV != -ENODATA) &&
(uc_pdata->max_uV != -ENODATA) &&
(uc_pdata->min_uV == uc_pdata->max_uV)) {
ret = regulator_set_value(dev, uc_pdata->min_uV);
if (failed(ret, verbose, "set %d uV", uc_pdata->min_uV))
goto exit;
}
/* Those values are optional (-ENODATA if unset) */
if ((uc_pdata->min_uA != -ENODATA) &&
(uc_pdata->max_uA != -ENODATA) &&
(uc_pdata->min_uA == uc_pdata->max_uA)) {
ret = regulator_set_current(dev, uc_pdata->min_uA);
if (failed(ret, verbose, "; set %d uA", uc_pdata->min_uA))
goto exit;
}
ret = regulator_set_enable(dev, true);
if (failed(ret, verbose, "; enabling", uc_pdata->min_uA))
goto exit;
retdev:
if (devp)
*devp = dev;
exit:
if (verbose)
printf("\n");
return ret;
return regulator_autoset(dev);
}
int regulator_list_autoset(const char *list_platname[],
@ -229,7 +199,9 @@ int regulator_list_autoset(const char *list_platname[],
int error = 0, i = 0, ret;
while (list_platname[i]) {
ret = regulator_autoset(list_platname[i], &dev, verbose);
ret = regulator_autoset_by_name(list_platname[i], &dev);
if (ret != -EMEDIUMTYPE && verbose)
regulator_show(dev, ret);
if (ret & !error)
error = ret;

34
include/power/regulator.h
View file

@ -316,9 +316,28 @@ int regulator_get_mode(struct udevice *dev);
int regulator_set_mode(struct udevice *dev, int mode_id);
/**
* regulator_autoset: setup the regulator given by its uclass's platform data
* name field. The setup depends on constraints found in device's uclass's
* platform data (struct dm_regulator_uclass_platdata):
* regulator_autoset: setup the voltage/current on a regulator
*
* The setup depends on constraints found in device's uclass's platform data
* (struct dm_regulator_uclass_platdata):
*
* - Enable - will set - if any of: 'always_on' or 'boot_on' is set to true,
* or if both are unset, then the function returns
* - Voltage value - will set - if '.min_uV' and '.max_uV' values are equal
* - Current limit - will set - if '.min_uA' and '.max_uA' values are equal
*
* The function returns on the first-encountered error.
*
* @platname - expected string for dm_regulator_uclass_platdata .name field
* @devp - returned pointer to the regulator device - if non-NULL passed
* @return: 0 on success or negative value of errno.
*/
int regulator_autoset(struct udevice *dev);
/**
* regulator_autoset_by_name: setup the regulator given by its uclass's
* platform data name field. The setup depends on constraints found in device's
* uclass's platform data (struct dm_regulator_uclass_platdata):
* - Enable - will set - if any of: 'always_on' or 'boot_on' is set to true,
* or if both are unset, then the function returns
* - Voltage value - will set - if '.min_uV' and '.max_uV' values are equal
@ -328,21 +347,18 @@ int regulator_set_mode(struct udevice *dev, int mode_id);
*
* @platname - expected string for dm_regulator_uclass_platdata .name field
* @devp - returned pointer to the regulator device - if non-NULL passed
* @verbose - (true/false) print regulator setup info, or be quiet
* @return: 0 on success or negative value of errno.
*
* The returned 'regulator' device can be used with:
* - regulator_get/set_*
*/
int regulator_autoset(const char *platname,
struct udevice **devp,
bool verbose);
int regulator_autoset_by_name(const char *platname, struct udevice **devp);
/**
* regulator_list_autoset: setup the regulators given by list of their uclass's
* platform data name field. The setup depends on constraints found in device's
* uclass's platform data. The function loops with calls to:
* regulator_autoset() for each name from the list.
* regulator_autoset_by_name() for each name from the list.
*
* @list_platname - an array of expected strings for .name field of each
* regulator's uclass platdata
@ -383,7 +399,7 @@ int regulator_get_by_devname(const char *devname, struct udevice **devp);
* Search by name, found in regulator uclass platdata.
*
* @platname - expected string for uc_pdata->name of regulator uclass platdata
* @devp - returned pointer to the regulator device
* @devp - returns pointer to the regulator device or NULL on error
* @return 0 on success or negative value of errno.
*
* The returned 'regulator' device is probed and can be used with:

4
include/power/sandbox_pmic.h
View file

@ -117,11 +117,11 @@ enum {
/*
* Expected regulators setup after call of:
* - regulator_autoset()
* - regulator_autoset_by_name()
* - regulator_list_autoset()
*/
/* BUCK1: for testing regulator_autoset() */
/* BUCK1: for testing regulator_autoset_by_name() */
#define SANDBOX_BUCK1_AUTOSET_EXPECTED_UV 1200000
#define SANDBOX_BUCK1_AUTOSET_EXPECTED_UA 200000
#define SANDBOX_BUCK1_AUTOSET_EXPECTED_ENABLE true

2
test/dm/regulator.c
View file

@ -210,7 +210,7 @@ static int dm_test_power_regulator_autoset(struct unit_test_state *uts)
* Expected output state: uV=1200000; uA=200000; output enabled
*/
platname = regulator_names[BUCK1][PLATNAME];
ut_assertok(regulator_autoset(platname, &dev_autoset, false));
ut_assertok(regulator_autoset_by_name(platname, &dev_autoset));
/* Check, that the returned device is proper */
ut_assertok(regulator_get_by_platname(platname, &dev));