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regulator: fan53555: Add TCS4525 DCDC support
TCS4525 main features: - 2.7V to 5.5V Input Voltage Range; - 3MHz Constant Switching Frequency; - 5A Available Load Current; - Programmable Output Voltage: 0.6V to 1.4V in 6.25mV Steps; - PFM/PWM Operation for Optimum Increased Efficiency; Signed-off-by: Joseph Chen <chenjh@rock-chips.com> [Ezequiel: Forward port] Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> Link: https://lore.kernel.org/r/20210421210338.43819-3-ezequiel@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Joseph Chen
Mark Brown
parent
3007accc39
commit
914df8faa7
@ -24,6 +24,12 @@
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/* Voltage setting */
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#define FAN53555_VSEL0 0x00
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#define FAN53555_VSEL1 0x01
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#define TCS4525_VSEL0 0x11
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#define TCS4525_VSEL1 0x10
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#define TCS4525_TIME 0x13
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#define TCS4525_COMMAND 0x14
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/* Control register */
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#define FAN53555_CONTROL 0x02
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/* IC Type */
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@ -49,11 +55,20 @@
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#define FAN53555_NVOLTAGES 64 /* Numbers of voltages */
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#define FAN53526_NVOLTAGES 128
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#define TCS4525_NVOLTAGES 127 /* Numbers of voltages */
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#define TCS_VSEL_NSEL_MASK 0x7f
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#define TCS_VSEL0_MODE (1 << 7)
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#define TCS_VSEL1_MODE (1 << 6)
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#define TCS_SLEW_SHIFT 3
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#define TCS_SLEW_MASK (0x3 < 3)
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enum fan53555_vendor {
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FAN53526_VENDOR_FAIRCHILD = 0,
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FAN53555_VENDOR_FAIRCHILD,
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FAN53555_VENDOR_SILERGY,
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FAN53555_VENDOR_TCS,
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};
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enum {
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@ -106,6 +121,11 @@ struct fan53555_device_info {
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unsigned int mode_mask;
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/* Sleep voltage cache */
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unsigned int sleep_vol_cache;
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/* Slew rate */
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unsigned int slew_reg;
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unsigned int slew_mask;
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unsigned int slew_shift;
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unsigned int slew_rate;
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};
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static int fan53555_set_suspend_voltage(struct regulator_dev *rdev, int uV)
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@ -189,13 +209,37 @@ static const int slew_rates[] = {
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500,
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};
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static const int tcs_slew_rates[] = {
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18700,
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9300,
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4600,
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2300,
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};
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static int fan53555_set_ramp(struct regulator_dev *rdev, int ramp)
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{
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struct fan53555_device_info *di = rdev_get_drvdata(rdev);
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int regval = -1, i;
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const int *slew_rate_t;
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int slew_rate_n;
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for (i = 0; i < ARRAY_SIZE(slew_rates); i++) {
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if (ramp <= slew_rates[i])
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switch (di->vendor) {
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case FAN53526_VENDOR_FAIRCHILD:
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case FAN53555_VENDOR_FAIRCHILD:
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case FAN53555_VENDOR_SILERGY:
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slew_rate_t = slew_rates;
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slew_rate_n = ARRAY_SIZE(slew_rates);
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break;
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case FAN53555_VENDOR_TCS:
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slew_rate_t = tcs_slew_rates;
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slew_rate_n = ARRAY_SIZE(tcs_slew_rates);
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break;
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default:
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return -EINVAL;
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}
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for (i = 0; i < slew_rate_n; i++) {
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if (ramp <= slew_rate_t[i])
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regval = i;
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else
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break;
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@ -206,8 +250,8 @@ static int fan53555_set_ramp(struct regulator_dev *rdev, int ramp)
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return -EINVAL;
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}
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return regmap_update_bits(rdev->regmap, FAN53555_CONTROL,
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CTL_SLEW_MASK, regval << CTL_SLEW_SHIFT);
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return regmap_update_bits(rdev->regmap, di->slew_reg,
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di->slew_mask, regval << di->slew_shift);
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}
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static const struct regulator_ops fan53555_regulator_ops = {
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@ -292,7 +336,9 @@ static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di)
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"Chip ID %d not supported!\n", di->chip_id);
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return -EINVAL;
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}
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di->slew_reg = FAN53555_CONTROL;
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di->slew_mask = CTL_SLEW_MASK;
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di->slew_shift = CTL_SLEW_SHIFT;
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di->vsel_count = FAN53555_NVOLTAGES;
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return 0;
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@ -312,12 +358,29 @@ static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di)
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"Chip ID %d not supported!\n", di->chip_id);
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return -EINVAL;
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}
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di->slew_reg = FAN53555_CONTROL;
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di->slew_reg = FAN53555_CONTROL;
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di->slew_mask = CTL_SLEW_MASK;
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di->slew_shift = CTL_SLEW_SHIFT;
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di->vsel_count = FAN53555_NVOLTAGES;
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return 0;
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}
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static int fan53555_voltages_setup_tcs(struct fan53555_device_info *di)
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{
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di->slew_reg = TCS4525_TIME;
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di->slew_mask = TCS_SLEW_MASK;
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di->slew_shift = TCS_SLEW_MASK;
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/* Init voltage range and step */
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di->vsel_min = 600000;
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di->vsel_step = 6250;
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di->vsel_count = TCS4525_NVOLTAGES;
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return 0;
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}
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/* For 00,01,03,05 options:
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* VOUT = 0.60V + NSELx * 10mV, from 0.60 to 1.23V.
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* For 04 option:
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@ -329,17 +392,41 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
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int ret = 0;
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/* Setup voltage control register */
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switch (pdata->sleep_vsel_id) {
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case FAN53555_VSEL_ID_0:
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di->sleep_reg = FAN53555_VSEL0;
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di->vol_reg = FAN53555_VSEL1;
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switch (di->vendor) {
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case FAN53526_VENDOR_FAIRCHILD:
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case FAN53555_VENDOR_FAIRCHILD:
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case FAN53555_VENDOR_SILERGY:
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switch (pdata->sleep_vsel_id) {
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case FAN53555_VSEL_ID_0:
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di->sleep_reg = FAN53555_VSEL0;
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di->vol_reg = FAN53555_VSEL1;
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break;
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case FAN53555_VSEL_ID_1:
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di->sleep_reg = FAN53555_VSEL1;
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di->vol_reg = FAN53555_VSEL0;
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break;
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default:
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dev_err(di->dev, "Invalid VSEL ID!\n");
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return -EINVAL;
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}
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break;
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case FAN53555_VSEL_ID_1:
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di->sleep_reg = FAN53555_VSEL1;
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di->vol_reg = FAN53555_VSEL0;
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case FAN53555_VENDOR_TCS:
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switch (pdata->sleep_vsel_id) {
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case FAN53555_VSEL_ID_0:
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di->sleep_reg = TCS4525_VSEL0;
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di->vol_reg = TCS4525_VSEL1;
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break;
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case FAN53555_VSEL_ID_1:
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di->sleep_reg = TCS4525_VSEL1;
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di->vol_reg = TCS4525_VSEL0;
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break;
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default:
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dev_err(di->dev, "Invalid VSEL ID!\n");
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return -EINVAL;
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}
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break;
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default:
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dev_err(di->dev, "Invalid VSEL ID!\n");
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dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
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return -EINVAL;
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}
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@ -362,6 +449,18 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
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di->mode_reg = di->vol_reg;
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di->mode_mask = VSEL_MODE;
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break;
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case FAN53555_VENDOR_TCS:
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di->mode_reg = TCS4525_COMMAND;
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switch (pdata->sleep_vsel_id) {
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case FAN53555_VSEL_ID_0:
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di->mode_mask = TCS_VSEL1_MODE;
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break;
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case FAN53555_VSEL_ID_1:
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di->mode_mask = TCS_VSEL0_MODE;
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break;
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}
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break;
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default:
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dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
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return -EINVAL;
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@ -378,6 +477,9 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
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case FAN53555_VENDOR_SILERGY:
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ret = fan53555_voltages_setup_silergy(di);
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break;
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case FAN53555_VENDOR_TCS:
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ret = fan53555_voltages_setup_tcs(di);
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break;
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default:
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dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
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return -EINVAL;
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@ -449,6 +551,9 @@ static const struct of_device_id __maybe_unused fan53555_dt_ids[] = {
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}, {
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.compatible = "silergy,syr828",
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.data = (void *)FAN53555_VENDOR_SILERGY,
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}, {
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.compatible = "tcs,tcs4525",
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.data = (void *)FAN53555_VENDOR_TCS
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},
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{ }
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};
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@ -554,6 +659,9 @@ static const struct i2c_device_id fan53555_id[] = {
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}, {
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.name = "syr828",
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.driver_data = FAN53555_VENDOR_SILERGY
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}, {
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.name = "tcs4525",
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.driver_data = FAN53555_VENDOR_TCS
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},
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{ },
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};
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