Commit 0211f68e authored by Jorge Ramirez's avatar Jorge Ramirez Committed by Mark Brown

regulator: qcom_spmi: add PMS405 SPMI regulator

The PMS405 has 5 HFSMPS and 13 LDO regulators,

This commit adds support for one of the 5 HFSMPS regulators (s3) to
the spmi regulator driver.

The PMIC HFSMPS 430 regulators have 8 mV step size and a voltage
control scheme consisting of two  8-bit registers defining a 16-bit
voltage set point in units of millivolts

S3 controls the cpu voltages (s3 is a buck regulator of type HFS430);
it is therefore required so we can enable voltage scaling for safely
running cpufreq.
Signed-off-by: default avatarJorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Signed-off-by: default avatarJeffrey Hugo <jeffrey.l.hugo@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent bbd7992e
......@@ -97,6 +97,7 @@ enum spmi_regulator_logical_type {
SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS,
SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO,
SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426,
SPMI_REGULATOR_LOGICAL_TYPE_HFS430,
};
enum spmi_regulator_type {
......@@ -149,6 +150,7 @@ enum spmi_regulator_subtype {
SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL2 = 0x0e,
SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL3 = 0x0f,
SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL4 = 0x10,
SPMI_REGULATOR_SUBTYPE_HFS430 = 0x0a,
};
enum spmi_common_regulator_registers {
......@@ -294,6 +296,8 @@ enum spmi_common_control_register_index {
/* Clock rate in kHz of the FTSMPS426 regulator reference clock. */
#define SPMI_FTSMPS426_CLOCK_RATE 4800
#define SPMI_HFS430_CLOCK_RATE 1600
/* Minimum voltage stepper delay for each step. */
#define SPMI_FTSMPS426_STEP_DELAY 2
......@@ -507,6 +511,10 @@ static struct spmi_voltage_range ult_pldo_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 1750000, 1750000, 3337500, 3337500, 12500),
};
static struct spmi_voltage_range hfs430_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 320000, 320000, 2040000, 2040000, 8000),
};
static DEFINE_SPMI_SET_POINTS(pldo);
static DEFINE_SPMI_SET_POINTS(nldo1);
static DEFINE_SPMI_SET_POINTS(nldo2);
......@@ -522,6 +530,7 @@ static DEFINE_SPMI_SET_POINTS(ult_lo_smps);
static DEFINE_SPMI_SET_POINTS(ult_ho_smps);
static DEFINE_SPMI_SET_POINTS(ult_nldo);
static DEFINE_SPMI_SET_POINTS(ult_pldo);
static DEFINE_SPMI_SET_POINTS(hfs430);
static inline int spmi_vreg_read(struct spmi_regulator *vreg, u16 addr, u8 *buf,
int len)
......@@ -1398,12 +1407,26 @@ static struct regulator_ops spmi_ftsmps426_ops = {
.set_pull_down = spmi_regulator_common_set_pull_down,
};
static struct regulator_ops spmi_hfs430_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = spmi_regulator_ftsmps426_set_voltage,
.set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
.get_voltage_sel = spmi_regulator_ftsmps426_get_voltage,
.map_voltage = spmi_regulator_single_map_voltage,
.list_voltage = spmi_regulator_common_list_voltage,
.set_mode = spmi_regulator_ftsmps426_set_mode,
.get_mode = spmi_regulator_ftsmps426_get_mode,
};
/* Maximum possible digital major revision value */
#define INF 0xFF
static const struct spmi_regulator_mapping supported_regulators[] = {
/* type subtype dig_min dig_max ltype ops setpoints hpm_min */
SPMI_VREG(BUCK, GP_CTL, 0, INF, SMPS, smps, smps, 100000),
SPMI_VREG(BUCK, HFS430, 0, INF, HFS430, hfs430, hfs430, 10000),
SPMI_VREG(LDO, N300, 0, INF, LDO, ldo, nldo1, 10000),
SPMI_VREG(LDO, N600, 0, 0, LDO, ldo, nldo2, 10000),
SPMI_VREG(LDO, N1200, 0, 0, LDO, ldo, nldo2, 10000),
......@@ -1571,7 +1594,8 @@ static int spmi_regulator_init_slew_rate(struct spmi_regulator *vreg)
return ret;
}
static int spmi_regulator_init_slew_rate_ftsmps426(struct spmi_regulator *vreg)
static int spmi_regulator_init_slew_rate_ftsmps426(struct spmi_regulator *vreg,
int clock_rate)
{
int ret;
u8 reg = 0;
......@@ -1588,7 +1612,7 @@ static int spmi_regulator_init_slew_rate_ftsmps426(struct spmi_regulator *vreg)
delay >>= SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT;
/* slew_rate has units of uV/us */
slew_rate = SPMI_FTSMPS426_CLOCK_RATE * range->step_uV;
slew_rate = clock_rate * range->step_uV;
slew_rate /= 1000 * (SPMI_FTSMPS426_STEP_DELAY << delay);
slew_rate *= SPMI_FTSMPS426_STEP_MARGIN_NUM;
slew_rate /= SPMI_FTSMPS426_STEP_MARGIN_DEN;
......@@ -1740,7 +1764,14 @@ static int spmi_regulator_of_parse(struct device_node *node,
return ret;
break;
case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426:
ret = spmi_regulator_init_slew_rate_ftsmps426(vreg);
ret = spmi_regulator_init_slew_rate_ftsmps426(vreg,
SPMI_FTSMPS426_CLOCK_RATE);
if (ret)
return ret;
break;
case SPMI_REGULATOR_LOGICAL_TYPE_HFS430:
ret = spmi_regulator_init_slew_rate_ftsmps426(vreg,
SPMI_HFS430_CLOCK_RATE);
if (ret)
return ret;
break;
......@@ -1908,6 +1939,11 @@ static const struct spmi_regulator_data pm8005_regulators[] = {
{ }
};
static const struct spmi_regulator_data pms405_regulators[] = {
{ "s3", 0x1a00, "vdd_s3"},
{ }
};
static const struct of_device_id qcom_spmi_regulator_match[] = {
{ .compatible = "qcom,pm8005-regulators", .data = &pm8005_regulators },
{ .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
......@@ -1915,6 +1951,7 @@ static const struct of_device_id qcom_spmi_regulator_match[] = {
{ .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },
{ .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators },
{ .compatible = "qcom,pmi8994-regulators", .data = &pmi8994_regulators },
{ .compatible = "qcom,pms405-regulators", .data = &pms405_regulators },
{ }
};
MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match);
......
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