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regulator: qcom_spmi: Add support for PM8005 

The PM8005 is used on the msm8998 MTP.  The S1 regulator is VDD_GFX, ie
it needs to be on and controlled inorder to use the GPU.  Add support to
drive the PM8005 regulators so that we can bring up the GPU on msm8998.

Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jeffrey Hugo 2019-06-17 11:37:29 -07:00 committed by Mark Brown
parent 4fe0676b04
commit 42ba89c8bb
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 176 additions and 0 deletions
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176
drivers/regulator/qcom_spmi-regulator.c
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@ -96,6 +96,7 @@ enum spmi_regulator_logical_type {
SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS,
SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS,
SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO,
SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426,
};
enum spmi_regulator_type {
@ -142,6 +143,7 @@ enum spmi_regulator_subtype {
SPMI_REGULATOR_SUBTYPE_5V_BOOST = 0x01,
SPMI_REGULATOR_SUBTYPE_FTS_CTL = 0x08,
SPMI_REGULATOR_SUBTYPE_FTS2p5_CTL = 0x09,
SPMI_REGULATOR_SUBTYPE_FTS426_CTL = 0x0a,
SPMI_REGULATOR_SUBTYPE_BB_2A = 0x01,
SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL1 = 0x0d,
SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL2 = 0x0e,
@ -162,6 +164,18 @@ enum spmi_common_regulator_registers {
SPMI_COMMON_REG_STEP_CTRL = 0x61,
};
/*
* Second common register layout used by newer devices starting with ftsmps426
* Note that some of the registers from the first common layout remain
* unchanged and their definition is not duplicated.
*/
enum spmi_ftsmps426_regulator_registers {
SPMI_FTSMPS426_REG_VOLTAGE_LSB = 0x40,
SPMI_FTSMPS426_REG_VOLTAGE_MSB = 0x41,
SPMI_FTSMPS426_REG_VOLTAGE_ULS_LSB = 0x68,
SPMI_FTSMPS426_REG_VOLTAGE_ULS_MSB = 0x69,
};
enum spmi_vs_registers {
SPMI_VS_REG_OCP = 0x4a,
SPMI_VS_REG_SOFT_START = 0x4c,
@ -221,6 +235,14 @@ enum spmi_common_control_register_index {
#define SPMI_COMMON_MODE_FOLLOW_HW_EN0_MASK 0x01
#define SPMI_COMMON_MODE_FOLLOW_ALL_MASK 0x1f
#define SPMI_FTSMPS426_MODE_BYPASS_MASK 3
#define SPMI_FTSMPS426_MODE_RETENTION_MASK 4
#define SPMI_FTSMPS426_MODE_LPM_MASK 5
#define SPMI_FTSMPS426_MODE_AUTO_MASK 6
#define SPMI_FTSMPS426_MODE_HPM_MASK 7
#define SPMI_FTSMPS426_MODE_MASK 0x07
/* Common regulator pull down control register layout */
#define SPMI_COMMON_PULL_DOWN_ENABLE_MASK 0x80
@ -266,6 +288,23 @@ enum spmi_common_control_register_index {
#define SPMI_FTSMPS_STEP_MARGIN_NUM 4
#define SPMI_FTSMPS_STEP_MARGIN_DEN 5
#define SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK 0x03
#define SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT 0
/* Clock rate in kHz of the FTSMPS426 regulator reference clock. */
#define SPMI_FTSMPS426_CLOCK_RATE 4800
/* Minimum voltage stepper delay for each step. */
#define SPMI_FTSMPS426_STEP_DELAY 2
/*
* The ratio SPMI_FTSMPS426_STEP_MARGIN_NUM/SPMI_FTSMPS426_STEP_MARGIN_DEN is
* used to adjust the step rate in order to account for oscillator variance.
*/
#define SPMI_FTSMPS426_STEP_MARGIN_NUM 10
#define SPMI_FTSMPS426_STEP_MARGIN_DEN 11
/* VSET value to decide the range of ULT SMPS */
#define ULT_SMPS_RANGE_SPLIT 0x60
@ -439,6 +478,10 @@ static struct spmi_voltage_range ftsmps2p5_ranges[] = {
SPMI_VOLTAGE_RANGE(1, 160000, 1360000, 2200000, 2200000, 10000),
};
static struct spmi_voltage_range ftsmps426_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 0, 320000, 1352000, 1352000, 4000),
};
static struct spmi_voltage_range boost_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 4000000, 4000000, 5550000, 5550000, 50000),
};
@ -472,6 +515,7 @@ static DEFINE_SPMI_SET_POINTS(ln_ldo);
static DEFINE_SPMI_SET_POINTS(smps);
static DEFINE_SPMI_SET_POINTS(ftsmps);
static DEFINE_SPMI_SET_POINTS(ftsmps2p5);
static DEFINE_SPMI_SET_POINTS(ftsmps426);
static DEFINE_SPMI_SET_POINTS(boost);
static DEFINE_SPMI_SET_POINTS(boost_byp);
static DEFINE_SPMI_SET_POINTS(ult_lo_smps);
@ -739,6 +783,23 @@ spmi_regulator_common_set_voltage(struct regulator_dev *rdev, unsigned selector)
return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, buf, 2);
}
static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev,
unsigned selector);
static int spmi_regulator_ftsmps426_set_voltage(struct regulator_dev *rdev,
unsigned selector)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 buf[2];
int mV;
mV = spmi_regulator_common_list_voltage(rdev, selector) / 1000;
buf[0] = mV & 0xff;
buf[1] = mV >> 8;
return spmi_vreg_write(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2);
}
static int spmi_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
unsigned int old_selector, unsigned int new_selector)
{
@ -770,6 +831,21 @@ static int spmi_regulator_common_get_voltage(struct regulator_dev *rdev)
return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
}
static int spmi_regulator_ftsmps426_get_voltage(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
const struct spmi_voltage_range *range;
u8 buf[2];
int uV;
spmi_vreg_read(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2);
uV = (((unsigned int)buf[1] << 8) | (unsigned int)buf[0]) * 1000;
range = vreg->set_points->range;
return (uV - range->set_point_min_uV) / range->step_uV;
}
static int spmi_regulator_single_map_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
@ -915,6 +991,23 @@ static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
}
}
static unsigned int spmi_regulator_ftsmps426_get_mode(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 reg;
spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
switch (reg) {
case SPMI_FTSMPS426_MODE_HPM_MASK:
return REGULATOR_MODE_NORMAL;
case SPMI_FTSMPS426_MODE_AUTO_MASK:
return REGULATOR_MODE_FAST;
default:
return REGULATOR_MODE_IDLE;
}
}
static int
spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
@ -937,6 +1030,30 @@ spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
}
static int
spmi_regulator_ftsmps426_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 mask = SPMI_FTSMPS426_MODE_MASK;
u8 val;
switch (mode) {
case REGULATOR_MODE_NORMAL:
val = SPMI_FTSMPS426_MODE_HPM_MASK;
break;
case REGULATOR_MODE_FAST:
val = SPMI_FTSMPS426_MODE_AUTO_MASK;
break;
case REGULATOR_MODE_IDLE:
val = SPMI_FTSMPS426_MODE_LPM_MASK;
break;
default:
return -EINVAL;
}
return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
}
static int
spmi_regulator_common_set_load(struct regulator_dev *rdev, int load_uA)
{
@ -1266,6 +1383,21 @@ static struct regulator_ops spmi_ult_ldo_ops = {
.set_soft_start = spmi_regulator_common_set_soft_start,
};
static struct regulator_ops spmi_ftsmps426_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,
.set_load = spmi_regulator_common_set_load,
.set_pull_down = spmi_regulator_common_set_pull_down,
};
/* Maximum possible digital major revision value */
#define INF 0xFF
@ -1301,6 +1433,7 @@ static const struct spmi_regulator_mapping supported_regulators[] = {
SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST, boost, boost, 0),
SPMI_VREG(FTS, FTS_CTL, 0, INF, FTSMPS, ftsmps, ftsmps, 100000),
SPMI_VREG(FTS, FTS2p5_CTL, 0, INF, FTSMPS, ftsmps, ftsmps2p5, 100000),
SPMI_VREG(FTS, FTS426_CTL, 0, INF, FTSMPS426, ftsmps426, ftsmps426, 100000),
SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0),
SPMI_VREG(ULT_BUCK, ULT_HF_CTL1, 0, INF, ULT_LO_SMPS, ult_lo_smps,
ult_lo_smps, 100000),
@ -1438,6 +1571,34 @@ 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)
{
int ret;
u8 reg = 0;
int delay, slew_rate;
const struct spmi_voltage_range *range = &vreg->set_points->range[0];
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, &reg, 1);
if (ret) {
dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
return ret;
}
delay = reg & SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK;
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 /= 1000 * (SPMI_FTSMPS426_STEP_DELAY << delay);
slew_rate *= SPMI_FTSMPS426_STEP_MARGIN_NUM;
slew_rate /= SPMI_FTSMPS426_STEP_MARGIN_DEN;
/* Ensure that the slew rate is greater than 0 */
vreg->slew_rate = max(slew_rate, 1);
return ret;
}
static int spmi_regulator_init_registers(struct spmi_regulator *vreg,
const struct spmi_regulator_init_data *data)
{
@ -1577,6 +1738,12 @@ static int spmi_regulator_of_parse(struct device_node *node,
ret = spmi_regulator_init_slew_rate(vreg);
if (ret)
return ret;
break;
case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426:
ret = spmi_regulator_init_slew_rate_ftsmps426(vreg);
if (ret)
return ret;
break;
default:
break;
}
@ -1733,7 +1900,16 @@ static const struct spmi_regulator_data pmi8994_regulators[] = {
{ }
};
static const struct spmi_regulator_data pm8005_regulators[] = {
{ "s1", 0x1400, "vdd_s1", },
{ "s2", 0x1700, "vdd_s2", },
{ "s3", 0x1a00, "vdd_s3", },
{ "s4", 0x1d00, "vdd_s4", },
{ }
};
static const struct of_device_id qcom_spmi_regulator_match[] = {
{ .compatible = "qcom,pm8005-regulators", .data = &pm8005_regulators },
{ .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
{ .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators },
{ .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },