linux/drivers/regulator/lp87565-regulator.c
Linus Torvalds 8de262531f - Core Frameworks
- Set 'struct device' fwnode when registering a new device
 
  - New Drivers
    - Add support for ROHM BD70528 PMIC
 
  - New Device Support
    - Add support for LP87561 4-Phase Regulator to TI LP87565 PMIC
    - Add support for RK809 and RK817 to Rockchip RK808
    - Add support for Lid Angle to ChromeOS core
    - Add support for CS47L15 CODEC to Madera core
    - Add support for CS47L92 CODEC to Madera core
    - Add support for ChromeOS (legacy) Accelerometers in ChromeOS core
    - Add support for Add Intel Elkhart Lake PCH to Intel LPSS
 
  - New Functionality
    - Provide regulator supply information when registering; madera-core
    - Additional Device Tree support; lp87565, madera, cros-ec, rohm,bd71837-pmic
    - Allow over-riding power button press via Device Tree; rohm-bd718x7
    - Differentiate between running processors; cros_ec_dev
 
  - Fix-ups
    - Big header file update; cros_ec_commands.h
    - Split header per-subsystem; rohm-bd718x7
    - Remove superfluous code; menelaus, cs5535-mfd, cs47lXX-tables
    - Trivial; sorting, coding style; intel-lpss-pci
    - Only remove Power Off functionality if set locally; rk808
    - Make use for Power Off Prepare(); rk808
    - Fix spelling mistake in header guards; stmfx
    - Properly free IDA resources
    - SPDX fixups; cs47lXX-tables, madera
    - Error path fixups; hi655x-pmic
 
  - Bug Fixes
    - Add missing break in case() statement
    - Repair undefined behaviour when not initialising variables; arizona-core, madera-core
    - Fix reference to Device Tree documentation; madera
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Merge tag 'mfd-next-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Core Frameworks:
   - Set 'struct device' fwnode when registering a new device

  New Drivers:
   - Add support for ROHM BD70528 PMIC

  New Device Support:
   - Add support for LP87561 4-Phase Regulator to TI LP87565 PMIC
   - Add support for RK809 and RK817 to Rockchip RK808
   - Add support for Lid Angle to ChromeOS core
   - Add support for CS47L15 CODEC to Madera core
   - Add support for CS47L92 CODEC to Madera core
   - Add support for ChromeOS (legacy) Accelerometers in ChromeOS core
   - Add support for Add Intel Elkhart Lake PCH to Intel LPSS

  New Functionality:
   - Provide regulator supply information when registering; madera-core
   - Additional Device Tree support; lp87565, madera, cros-ec, rohm,bd71837-pmic
   - Allow over-riding power button press via Device Tree; rohm-bd718x7
   - Differentiate between running processors; cros_ec_dev

  Fix-ups:
   - Big header file update; cros_ec_commands.h
   - Split header per-subsystem; rohm-bd718x7
   - Remove superfluous code; menelaus, cs5535-mfd, cs47lXX-tables
   - Trivial; sorting, coding style; intel-lpss-pci
   - Only remove Power Off functionality if set locally; rk808
   - Make use for Power Off Prepare(); rk808
   - Fix spelling mistake in header guards; stmfx
   - Properly free IDA resources
   - SPDX fixups; cs47lXX-tables, madera
   - Error path fixups; hi655x-pmic

  Bug Fixes:
   - Add missing break in case() statement
   - Repair undefined behaviour when not initialising variables; arizona-core, madera-core
   - Fix reference to Device Tree documentation; madera"

* tag 'mfd-next-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (45 commits)
  mfd: hi655x-pmic: Fix missing return value check for devm_regmap_init_mmio_clk
  mfd: madera: Fixup SPDX headers
  mfd: madera: Remove some unused registers and fix some defaults
  mfd: intel-lpss: Release IDA resources
  mfd: intel-lpss: Add Intel Elkhart Lake PCH PCI IDs
  mfd: cs5535-mfd: Remove ifdef OLPC noise
  mfd: stmfx: Fix macro definition spelling
  dt-bindings: mfd: Add link to ROHM BD71847 Datasheet
  MAINAINERS: Swap words in INTEL PMIC MULTIFUNCTION DEVICE DRIVERS
  mfd: cros_ec_dev: Register cros_ec_accel_legacy driver as a subdevice
  mfd: rk808: Prepare rk805 for poweroff
  mfd: rk808: Check pm_power_off pointer
  mfd: cros_ec: differentiate SCP from EC by feature bit
  dt-bindings: Add binding for cros-ec-rpmsg
  mfd: madera: Add Madera core support for CS47L92
  mfd: madera: Add Madera core support for CS47L15
  mfd: madera: Update DT bindings to add additional CODECs
  mfd: madera: Add supply mapping for MICVDD
  mfd: madera: Fix potential uninitialised use of variable
  mfd: madera: Fix bad reference to pinctrl.txt file
  ...
2019-07-15 20:18:40 -07:00

222 lines
6.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Regulator driver for LP87565 PMIC
*
* Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/mfd/lp87565.h>
#define LP87565_REGULATOR(_name, _id, _of, _ops, _n, _vr, _vm, _er, _em, \
_delay, _lr, _cr) \
[_id] = { \
.desc = { \
.name = _name, \
.supply_name = _of "-in", \
.id = _id, \
.of_match = of_match_ptr(_of), \
.regulators_node = of_match_ptr("regulators"),\
.ops = &_ops, \
.n_voltages = _n, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.vsel_reg = _vr, \
.vsel_mask = _vm, \
.enable_reg = _er, \
.enable_mask = _em, \
.ramp_delay = _delay, \
.linear_ranges = _lr, \
.n_linear_ranges = ARRAY_SIZE(_lr), \
.curr_table = lp87565_buck_uA, \
.n_current_limits = ARRAY_SIZE(lp87565_buck_uA),\
.csel_reg = (_cr), \
.csel_mask = LP87565_BUCK_CTRL_2_ILIM, \
}, \
.ctrl2_reg = _cr, \
}
struct lp87565_regulator {
struct regulator_desc desc;
unsigned int ctrl2_reg;
};
static const struct lp87565_regulator regulators[];
static const struct regulator_linear_range buck0_1_2_3_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0xA, 0x17, 10000),
REGULATOR_LINEAR_RANGE(735000, 0x18, 0x9d, 5000),
REGULATOR_LINEAR_RANGE(1420000, 0x9e, 0xff, 20000),
};
static const unsigned int lp87565_buck_ramp_delay[] = {
30000, 15000, 10000, 7500, 3800, 1900, 940, 470
};
/* LP87565 BUCK current limit */
static const unsigned int lp87565_buck_uA[] = {
1500000, 2000000, 2500000, 3000000, 3500000, 4000000, 4500000, 5000000,
};
static int lp87565_buck_set_ramp_delay(struct regulator_dev *rdev,
int ramp_delay)
{
int id = rdev_get_id(rdev);
struct lp87565 *lp87565 = rdev_get_drvdata(rdev);
unsigned int reg;
int ret;
if (ramp_delay <= 470)
reg = 7;
else if (ramp_delay <= 940)
reg = 6;
else if (ramp_delay <= 1900)
reg = 5;
else if (ramp_delay <= 3800)
reg = 4;
else if (ramp_delay <= 7500)
reg = 3;
else if (ramp_delay <= 10000)
reg = 2;
else if (ramp_delay <= 15000)
reg = 1;
else
reg = 0;
ret = regmap_update_bits(lp87565->regmap, regulators[id].ctrl2_reg,
LP87565_BUCK_CTRL_2_SLEW_RATE,
reg << __ffs(LP87565_BUCK_CTRL_2_SLEW_RATE));
if (ret) {
dev_err(lp87565->dev, "SLEW RATE write failed: %d\n", ret);
return ret;
}
rdev->constraints->ramp_delay = lp87565_buck_ramp_delay[reg];
/* Conservatively give a 15% margin */
rdev->constraints->ramp_delay =
rdev->constraints->ramp_delay * 85 / 100;
return 0;
}
/* Operations permitted on BUCKs */
static const struct regulator_ops lp87565_buck_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_ramp_delay = lp87565_buck_set_ramp_delay,
.set_current_limit = regulator_set_current_limit_regmap,
.get_current_limit = regulator_get_current_limit_regmap,
};
static const struct lp87565_regulator regulators[] = {
LP87565_REGULATOR("BUCK0", LP87565_BUCK_0, "buck0", lp87565_buck_ops,
256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
LP87565_REG_BUCK0_CTRL_1,
LP87565_BUCK_CTRL_1_EN, 3230,
buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
LP87565_REGULATOR("BUCK1", LP87565_BUCK_1, "buck1", lp87565_buck_ops,
256, LP87565_REG_BUCK1_VOUT, LP87565_BUCK_VSET,
LP87565_REG_BUCK1_CTRL_1,
LP87565_BUCK_CTRL_1_EN, 3230,
buck0_1_2_3_ranges, LP87565_REG_BUCK1_CTRL_2),
LP87565_REGULATOR("BUCK2", LP87565_BUCK_2, "buck2", lp87565_buck_ops,
256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
LP87565_REG_BUCK2_CTRL_1,
LP87565_BUCK_CTRL_1_EN, 3230,
buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
LP87565_REGULATOR("BUCK3", LP87565_BUCK_3, "buck3", lp87565_buck_ops,
256, LP87565_REG_BUCK3_VOUT, LP87565_BUCK_VSET,
LP87565_REG_BUCK3_CTRL_1,
LP87565_BUCK_CTRL_1_EN, 3230,
buck0_1_2_3_ranges, LP87565_REG_BUCK3_CTRL_2),
LP87565_REGULATOR("BUCK10", LP87565_BUCK_10, "buck10", lp87565_buck_ops,
256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
LP87565_REG_BUCK0_CTRL_1,
LP87565_BUCK_CTRL_1_EN |
LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
LP87565_REGULATOR("BUCK23", LP87565_BUCK_23, "buck23", lp87565_buck_ops,
256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
LP87565_REG_BUCK2_CTRL_1,
LP87565_BUCK_CTRL_1_EN, 3230,
buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
LP87565_REGULATOR("BUCK3210", LP87565_BUCK_3210, "buck3210",
lp87565_buck_ops, 256, LP87565_REG_BUCK0_VOUT,
LP87565_BUCK_VSET, LP87565_REG_BUCK0_CTRL_1,
LP87565_BUCK_CTRL_1_EN |
LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
};
static int lp87565_regulator_probe(struct platform_device *pdev)
{
struct lp87565 *lp87565 = dev_get_drvdata(pdev->dev.parent);
struct regulator_config config = { };
struct regulator_dev *rdev;
int i, min_idx = LP87565_BUCK_0, max_idx = LP87565_BUCK_3;
platform_set_drvdata(pdev, lp87565);
config.dev = &pdev->dev;
config.dev->of_node = lp87565->dev->of_node;
config.driver_data = lp87565;
config.regmap = lp87565->regmap;
switch (lp87565->dev_type) {
case LP87565_DEVICE_TYPE_LP87565_Q1:
min_idx = LP87565_BUCK_10;
max_idx = LP87565_BUCK_23;
break;
case LP87565_DEVICE_TYPE_LP87561_Q1:
min_idx = LP87565_BUCK_3210;
max_idx = LP87565_BUCK_3210;
break;
default:
dev_err(lp87565->dev, "Invalid lp config %d\n",
lp87565->dev_type);
return -EINVAL;
}
for (i = min_idx; i <= max_idx; i++) {
rdev = devm_regulator_register(&pdev->dev, &regulators[i].desc,
&config);
if (IS_ERR(rdev)) {
dev_err(lp87565->dev, "failed to register %s regulator\n",
pdev->name);
return PTR_ERR(rdev);
}
}
return 0;
}
static const struct platform_device_id lp87565_regulator_id_table[] = {
{ "lp87565-regulator", },
{ "lp87565-q1-regulator", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, lp87565_regulator_id_table);
static struct platform_driver lp87565_regulator_driver = {
.driver = {
.name = "lp87565-pmic",
},
.probe = lp87565_regulator_probe,
.id_table = lp87565_regulator_id_table,
};
module_platform_driver(lp87565_regulator_driver);
MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
MODULE_DESCRIPTION("LP87565 voltage regulator driver");
MODULE_LICENSE("GPL v2");