*
* License Terms: GNU General Public License v2
*
- * Author: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
+ * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
+ * Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
*
* AB8500 peripheral regulators
*
- * AB8500 supports the following regulators,
- * LDOs - VAUDIO, VANAMIC2/2, VDIGMIC, VINTCORE12, VTVOUT,
- * VAUX1/2/3, VANA
- *
- * for DB8500 cut 1.0 and previous versions of the silicon, all accesses
- * to registers are through the DB8500 SPI. In cut 1.1 onwards, these
- * accesses are through the DB8500 PRCMU I2C
- *
+ * AB8500 supports the following regulators:
+ * VAUX1/2/3, VINTCORE, VTVOUT, VAUDIO, VAMIC1/2, VDMIC, VANA
*/
#include <linux/init.h>
#include <linux/kernel.h>
/**
* struct ab8500_regulator_info - ab8500 regulator information
+ * @dev: device pointer
* @desc: regulator description
- * @ab8500: ab8500 parent
* @regulator_dev: regulator device
* @max_uV: maximum voltage (for variable voltage supplies)
* @min_uV: minimum voltage (for variable voltage supplies)
* @fixed_uV: typical voltage (for fixed voltage supplies)
* @update_bank: bank to control on/off
* @update_reg: register to control on/off
- * @mask: mask to enable/disable regulator
- * @enable: bits to enable the regulator in normal(high power) mode
+ * @update_mask: mask to enable/disable regulator
+ * @update_val_enable: bits to enable the regulator in normal (high power) mode
* @voltage_bank: bank to control regulator voltage
* @voltage_reg: register to control regulator voltage
* @voltage_mask: mask to control regulator voltage
- * @supported_voltages: supported voltage table
+ * @voltages: supported voltage table
* @voltages_len: number of supported voltages for the regulator
*/
struct ab8500_regulator_info {
struct device *dev;
struct regulator_desc desc;
- struct ab8500 *ab8500;
struct regulator_dev *regulator;
int max_uV;
int min_uV;
int fixed_uV;
u8 update_bank;
u8 update_reg;
- u8 mask;
- u8 enable;
+ u8 update_mask;
+ u8 update_val_enable;
u8 voltage_bank;
u8 voltage_reg;
u8 voltage_mask;
- int const *supported_voltages;
+ int const *voltages;
int voltages_len;
};
3300000,
};
+static const int ldo_vaux3_voltages[] = {
+ 1200000,
+ 1500000,
+ 1800000,
+ 2100000,
+ 2500000,
+ 2750000,
+ 2790000,
+ 2910000,
+};
+
static const int ldo_vintcore_voltages[] = {
1200000,
1225000,
static int ab8500_regulator_enable(struct regulator_dev *rdev)
{
- int regulator_id, ret;
+ int ret;
struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
- regulator_id = rdev_get_id(rdev);
- if (regulator_id >= AB8500_NUM_REGULATORS)
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
return -EINVAL;
+ }
ret = abx500_mask_and_set_register_interruptible(info->dev,
- info->update_bank, info->update_reg, info->mask, info->enable);
+ info->update_bank, info->update_reg,
+ info->update_mask, info->update_val_enable);
if (ret < 0)
dev_err(rdev_get_dev(rdev),
"couldn't set enable bits for regulator\n");
static int ab8500_regulator_disable(struct regulator_dev *rdev)
{
- int regulator_id, ret;
+ int ret;
struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
- regulator_id = rdev_get_id(rdev);
- if (regulator_id >= AB8500_NUM_REGULATORS)
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
return -EINVAL;
+ }
ret = abx500_mask_and_set_register_interruptible(info->dev,
- info->update_bank, info->update_reg, info->mask, 0x0);
+ info->update_bank, info->update_reg,
+ info->update_mask, 0x0);
if (ret < 0)
dev_err(rdev_get_dev(rdev),
"couldn't set disable bits for regulator\n");
static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
{
- int regulator_id, ret;
+ int ret;
struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
u8 value;
- regulator_id = rdev_get_id(rdev);
- if (regulator_id >= AB8500_NUM_REGULATORS)
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
return -EINVAL;
+ }
ret = abx500_get_register_interruptible(info->dev,
info->update_bank, info->update_reg, &value);
return ret;
}
- if (value & info->mask)
+ if (value & info->update_mask)
return true;
else
return false;
static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector)
{
- int regulator_id;
struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
- regulator_id = rdev_get_id(rdev);
- if (regulator_id >= AB8500_NUM_REGULATORS)
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
return -EINVAL;
+ }
/* return the uV for the fixed regulators */
if (info->fixed_uV)
if (selector >= info->voltages_len)
return -EINVAL;
- return info->supported_voltages[selector];
+ return info->voltages[selector];
}
static int ab8500_regulator_get_voltage(struct regulator_dev *rdev)
{
- int regulator_id, ret;
+ int ret;
struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
u8 value;
- regulator_id = rdev_get_id(rdev);
- if (regulator_id >= AB8500_NUM_REGULATORS)
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
return -EINVAL;
+ }
ret = abx500_get_register_interruptible(info->dev, info->voltage_bank,
info->voltage_reg, &value);
/* vintcore has a different layout */
value &= info->voltage_mask;
- if (regulator_id == AB8500_LDO_INTCORE)
- ret = info->supported_voltages[value >> 0x3];
+ if (info->desc.id == AB8500_LDO_INTCORE)
+ ret = info->voltages[value >> 0x3];
else
- ret = info->supported_voltages[value];
+ ret = info->voltages[value];
return ret;
}
/* check the supported voltage */
for (i = 0; i < info->voltages_len; i++) {
- if ((info->supported_voltages[i] >= min_uV) &&
- (info->supported_voltages[i] <= max_uV))
+ if ((info->voltages[i] >= min_uV) &&
+ (info->voltages[i] <= max_uV))
return i;
}
}
static int ab8500_regulator_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
- int regulator_id, ret;
+ int ret;
struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
- regulator_id = rdev_get_id(rdev);
- if (regulator_id >= AB8500_NUM_REGULATORS)
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
return -EINVAL;
+ }
/* get the appropriate voltages within the range */
ret = ab8500_get_best_voltage_index(rdev, min_uV, max_uV);
return ret;
}
+ *selector = ret;
+
/* set the registers for the request */
ret = abx500_mask_and_set_register_interruptible(info->dev,
info->voltage_bank, info->voltage_reg,
static int ab8500_fixed_get_voltage(struct regulator_dev *rdev)
{
- int regulator_id;
struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
- regulator_id = rdev_get_id(rdev);
- if (regulator_id >= AB8500_NUM_REGULATORS)
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
return -EINVAL;
+ }
return info->fixed_uV;
}
.list_voltage = ab8500_list_voltage,
};
-#define AB8500_LDO(_id, min, max, bank, reg, reg_mask, \
- reg_enable, volt_bank, volt_reg, volt_mask, \
- voltages, len_volts) \
-{ \
+#define AB8500_LDO(_id, _min_mV, _max_mV, \
+ _u_bank, _u_reg, _u_mask, _u_val_enable, \
+ _v_bank, _v_reg, _v_mask, _v_table, _v_table_len) \
+[AB8500_LDO_##_id] = { \
.desc = { \
- .name = "LDO-" #_id, \
- .ops = &ab8500_regulator_ops, \
- .type = REGULATOR_VOLTAGE, \
- .id = AB8500_LDO_##_id, \
- .owner = THIS_MODULE, \
+ .name = "LDO-" #_id, \
+ .ops = &ab8500_regulator_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AB8500_LDO_##_id, \
+ .owner = THIS_MODULE, \
}, \
- .min_uV = (min) * 1000, \
- .max_uV = (max) * 1000, \
- .update_bank = bank, \
- .update_reg = reg, \
- .mask = reg_mask, \
- .enable = reg_enable, \
- .voltage_bank = volt_bank, \
- .voltage_reg = volt_reg, \
- .voltage_mask = volt_mask, \
- .supported_voltages = voltages, \
- .voltages_len = len_volts, \
- .fixed_uV = 0, \
+ .min_uV = (_min_mV) * 1000, \
+ .max_uV = (_max_mV) * 1000, \
+ .update_bank = _u_bank, \
+ .update_reg = _u_reg, \
+ .update_mask = _u_mask, \
+ .update_val_enable = _u_val_enable, \
+ .voltage_bank = _v_bank, \
+ .voltage_reg = _v_reg, \
+ .voltage_mask = _v_mask, \
+ .voltages = _v_table, \
+ .voltages_len = _v_table_len, \
+ .fixed_uV = 0, \
}
-#define AB8500_FIXED_LDO(_id, fixed, bank, reg, \
- reg_mask, reg_enable) \
-{ \
- .desc = { \
- .name = "LDO-" #_id, \
- .ops = &ab8500_ldo_fixed_ops, \
- .type = REGULATOR_VOLTAGE, \
- .id = AB8500_LDO_##_id, \
- .owner = THIS_MODULE, \
- }, \
- .fixed_uV = fixed * 1000, \
- .update_bank = bank, \
- .update_reg = reg, \
- .mask = reg_mask, \
- .enable = reg_enable, \
+#define AB8500_FIXED_LDO(_id, _fixed_mV, \
+ _u_bank, _u_reg, _u_mask, _u_val_enable) \
+[AB8500_LDO_##_id] = { \
+ .desc = { \
+ .name = "LDO-" #_id, \
+ .ops = &ab8500_ldo_fixed_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AB8500_LDO_##_id, \
+ .owner = THIS_MODULE, \
+ }, \
+ .fixed_uV = (_fixed_mV) * 1000, \
+ .update_bank = _u_bank, \
+ .update_reg = _u_reg, \
+ .update_mask = _u_mask, \
+ .update_val_enable = _u_val_enable, \
}
static struct ab8500_regulator_info ab8500_regulator_info[] = {
/*
- * Variable Voltage LDOs
- * name, min uV, max uV, ctrl bank, ctrl reg, reg mask, enable mask,
- * volt ctrl bank, volt ctrl reg, volt ctrl mask, volt table,
- * num supported volts
+ * Variable Voltage Regulators
+ * name, min mV, max mV,
+ * update bank, reg, mask, enable val
+ * volt bank, reg, mask, table, table length
*/
- AB8500_LDO(AUX1, 1100, 3300, 0x04, 0x09, 0x3, 0x1, 0x04, 0x1f, 0xf,
- ldo_vauxn_voltages, ARRAY_SIZE(ldo_vauxn_voltages)),
- AB8500_LDO(AUX2, 1100, 3300, 0x04, 0x09, 0xc, 0x4, 0x04, 0x20, 0xf,
- ldo_vauxn_voltages, ARRAY_SIZE(ldo_vauxn_voltages)),
- AB8500_LDO(AUX3, 1100, 3300, 0x04, 0x0a, 0x3, 0x1, 0x04, 0x21, 0xf,
- ldo_vauxn_voltages, ARRAY_SIZE(ldo_vauxn_voltages)),
- AB8500_LDO(INTCORE, 1100, 3300, 0x03, 0x80, 0x4, 0x4, 0x03, 0x80, 0x38,
+ AB8500_LDO(AUX1, 1100, 3300,
+ 0x04, 0x09, 0x03, 0x01, 0x04, 0x1f, 0x0f,
+ ldo_vauxn_voltages, ARRAY_SIZE(ldo_vauxn_voltages)),
+ AB8500_LDO(AUX2, 1100, 3300,
+ 0x04, 0x09, 0x0c, 0x04, 0x04, 0x20, 0x0f,
+ ldo_vauxn_voltages, ARRAY_SIZE(ldo_vauxn_voltages)),
+ AB8500_LDO(AUX3, 1100, 3300,
+ 0x04, 0x0a, 0x03, 0x01, 0x04, 0x21, 0x07,
+ ldo_vaux3_voltages, ARRAY_SIZE(ldo_vaux3_voltages)),
+ AB8500_LDO(INTCORE, 1100, 3300,
+ 0x03, 0x80, 0x44, 0x04, 0x03, 0x80, 0x38,
ldo_vintcore_voltages, ARRAY_SIZE(ldo_vintcore_voltages)),
/*
- * Fixed Voltage LDOs
- * name, o/p uV, ctrl bank, ctrl reg, enable, disable
+ * Fixed Voltage Regulators
+ * name, fixed mV,
+ * update bank, reg, mask, enable val
*/
- AB8500_FIXED_LDO(TVOUT, 2000, 0x03, 0x80, 0x2, 0x2),
- AB8500_FIXED_LDO(AUDIO, 2000, 0x03, 0x83, 0x2, 0x2),
- AB8500_FIXED_LDO(ANAMIC1, 2050, 0x03, 0x83, 0x4, 0x4),
- AB8500_FIXED_LDO(ANAMIC2, 2050, 0x03, 0x83, 0x8, 0x8),
- AB8500_FIXED_LDO(DMIC, 1800, 0x03, 0x83, 0x10, 0x10),
- AB8500_FIXED_LDO(ANA, 1200, 0x03, 0x83, 0xc, 0x4),
+ AB8500_FIXED_LDO(TVOUT, 2000, 0x03, 0x80, 0x82, 0x02),
+ AB8500_FIXED_LDO(AUDIO, 2000, 0x03, 0x83, 0x02, 0x02),
+ AB8500_FIXED_LDO(ANAMIC1, 2050, 0x03, 0x83, 0x08, 0x08),
+ AB8500_FIXED_LDO(ANAMIC2, 2050, 0x03, 0x83, 0x10, 0x10),
+ AB8500_FIXED_LDO(DMIC, 1800, 0x03, 0x83, 0x04, 0x04),
+ AB8500_FIXED_LDO(ANA, 1200, 0x04, 0x06, 0x0c, 0x04),
};
-static inline struct ab8500_regulator_info *find_regulator_info(int id)
-{
- struct ab8500_regulator_info *info;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
- info = &ab8500_regulator_info[i];
- if (info->desc.id == id)
- return info;
- }
- return NULL;
-}
-
static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
{
struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
return -EINVAL;
}
pdata = dev_get_platdata(ab8500->dev);
+ if (!pdata) {
+ dev_err(&pdev->dev, "null pdata\n");
+ return -EINVAL;
+ }
+
+ /* make sure the platform data has the correct size */
+ if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
+ dev_err(&pdev->dev, "platform configuration error\n");
+ return -EINVAL;
+ }
/* register all regulators */
for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
/* assign per-regulator data */
info = &ab8500_regulator_info[i];
info->dev = &pdev->dev;
- info->ab8500 = ab8500;
+ /* fix for hardware before ab8500v2.0 */
+ if (abx500_get_chip_id(info->dev) < 0x20) {
+ if (info->desc.id == AB8500_LDO_AUX3) {
+ info->desc.n_voltages =
+ ARRAY_SIZE(ldo_vauxn_voltages);
+ info->voltages = ldo_vauxn_voltages;
+ info->voltages_len =
+ ARRAY_SIZE(ldo_vauxn_voltages);
+ info->voltage_mask = 0xf;
+ }
+ }
+
+ /* register regulator with framework */
info->regulator = regulator_register(&info->desc, &pdev->dev,
- pdata->regulator[i], info);
+ &pdata->regulator[i], info);
if (IS_ERR(info->regulator)) {
err = PTR_ERR(info->regulator);
dev_err(&pdev->dev, "failed to register regulator %s\n",
git.openpandora.org / pandora-kernel.git / blobdiff