This looks good to me with one proviso! SYSEN1/2 are not necessarily for regulators as given by the name, they are more for use indicating to other chips that power is now available/stable.
But it will not break things to have them exposed in regulator API so I shall leave this to Mark. Graeme On 17/04/13 10:43, Laxman Dewangan wrote: > Palmas device have control outputs like REGEN1, REGEN2, REGEN3, > SYSEN1 and SYSEN2. These control outputs can be used for controlling > external voltage switches to enabled/disable voltage outputs. > > Add support of these control outputs through regulator framework. > > Signed-off-by: Laxman Dewangan <[email protected]> > --- > drivers/regulator/palmas-regulator.c | 95 +++++++++++++++++++++++++++++---- > include/linux/mfd/palmas.h | 6 ++ > 2 files changed, 89 insertions(+), 12 deletions(-) > > diff --git a/drivers/regulator/palmas-regulator.c > b/drivers/regulator/palmas-regulator.c > index 7c7992b..28080a7 100644 > --- a/drivers/regulator/palmas-regulator.c > +++ b/drivers/regulator/palmas-regulator.c > @@ -166,6 +166,26 @@ static const struct regs_info palmas_regs_info[] = { > .vsel_addr = PALMAS_LDOUSB_VOLTAGE, > .ctrl_addr = PALMAS_LDOUSB_CTRL, > }, > + { > + .name = "REGEN1", > + .ctrl_addr = PALMAS_REGEN1_CTRL, > + }, > + { > + .name = "REGEN2", > + .ctrl_addr = PALMAS_REGEN2_CTRL, > + }, > + { > + .name = "REGEN3", > + .ctrl_addr = PALMAS_REGEN3_CTRL, > + }, > + { > + .name = "SYSEN1", > + .ctrl_addr = PALMAS_SYSEN1_CTRL, > + }, > + { > + .name = "SYSEN2", > + .ctrl_addr = PALMAS_SYSEN2_CTRL, > + }, > }; > > #define SMPS_CTRL_MODE_OFF 0x00 > @@ -423,6 +443,12 @@ static struct regulator_ops palmas_ops_ldo = { > .map_voltage = regulator_map_voltage_linear, > }; > > +static struct regulator_ops palmas_ops_extreg = { > + .is_enabled = regulator_is_enabled_regmap, > + .enable = regulator_enable_regmap, > + .disable = regulator_disable_regmap, > +}; > + > /* > * setup the hardware based sleep configuration of the SMPS/LDO regulators > * from the platform data. This is different to the software based control > @@ -524,6 +550,28 @@ static int palmas_ldo_init(struct palmas *palmas, int id, > return 0; > } > > +static int palmas_extreg_init(struct palmas *palmas, int id, > + struct palmas_reg_init *reg_init) > +{ > + unsigned int addr; > + int ret; > + unsigned int val = 0; > + > + addr = palmas_regs_info[id].ctrl_addr; > + > + if (reg_init->mode_sleep) > + val = PALMAS_REGEN1_CTRL_MODE_SLEEP; > + > + ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE, > + addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val); > + if (ret < 0) { > + dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n", > + addr, ret); > + return ret; > + } > + return 0; > +} > + > static struct of_regulator_match palmas_matches[] = { > { .name = "smps12", }, > { .name = "smps123", }, > @@ -546,6 +594,11 @@ static struct of_regulator_match palmas_matches[] = { > { .name = "ldo9", }, > { .name = "ldoln", }, > { .name = "ldousb", }, > + { .name = "regen1", }, > + { .name = "regen2", }, > + { .name = "regen3", }, > + { .name = "sysen1", }, > + { .name = "sysen2", }, > }; > > static void palmas_dt_to_pdata(struct device *dev, > @@ -764,21 +817,34 @@ static int palmas_regulators_probe(struct > platform_device *pdev) > /* Register the regulators */ > pmic->desc[id].name = palmas_regs_info[id].name; > pmic->desc[id].id = id; > - pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES; > - > - pmic->desc[id].ops = &palmas_ops_ldo; > - > pmic->desc[id].type = REGULATOR_VOLTAGE; > pmic->desc[id].owner = THIS_MODULE; > - pmic->desc[id].min_uV = 900000; > - pmic->desc[id].uV_step = 50000; > - pmic->desc[id].linear_min_sel = 1; > - pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, > + > + if (id < PALMAS_REG_REGEN1) { > + pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES; > + pmic->desc[id].ops = &palmas_ops_ldo; > + pmic->desc[id].min_uV = 900000; > + pmic->desc[id].uV_step = 50000; > + pmic->desc[id].linear_min_sel = 1; > + pmic->desc[id].vsel_reg = > + PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, > palmas_regs_info[id].vsel_addr); > - pmic->desc[id].vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK; > - pmic->desc[id].enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, > + pmic->desc[id].vsel_mask = > + PALMAS_LDO1_VOLTAGE_VSEL_MASK; > + pmic->desc[id].enable_reg = > + PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, > + palmas_regs_info[id].ctrl_addr); > + pmic->desc[id].enable_mask = > + PALMAS_LDO1_CTRL_MODE_ACTIVE; > + } else { > + pmic->desc[id].n_voltages = 1; > + pmic->desc[id].ops = &palmas_ops_extreg; > + pmic->desc[id].enable_reg = > + PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE, > palmas_regs_info[id].ctrl_addr); > - pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE; > + pmic->desc[id].enable_mask = > + PALMAS_REGEN1_CTRL_MODE_ACTIVE; > + } > > if (pdata) > config.init_data = pdata->reg_data[id]; > @@ -804,7 +870,12 @@ static int palmas_regulators_probe(struct > platform_device *pdev) > if (pdata) { > reg_init = pdata->reg_init[id]; > if (reg_init) { > - ret = palmas_ldo_init(palmas, id, reg_init); > + if (id < PALMAS_REG_REGEN1) > + ret = palmas_ldo_init(palmas, > + id, reg_init); > + else > + ret = palmas_extreg_init(palmas, > + id, reg_init); > if (ret) { > regulator_unregister(pmic->rdev[id]); > goto err_unregister_regulator; > diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h > index 4a066d0..fb04d07 100644 > --- a/include/linux/mfd/palmas.h > +++ b/include/linux/mfd/palmas.h > @@ -164,6 +164,12 @@ enum palmas_regulators { > PALMAS_REG_LDO9, > PALMAS_REG_LDOLN, > PALMAS_REG_LDOUSB, > + /* External regulators */ > + PALMAS_REG_REGEN1, > + PALMAS_REG_REGEN2, > + PALMAS_REG_REGEN3, > + PALMAS_REG_SYSEN1, > + PALMAS_REG_SYSEN2, > /* Total number of regulators */ > PALMAS_NUM_REGS, > }; -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
