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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/regulator/sc2731-regulator.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/regulator/sc2731-regulator.c')
-rw-r--r--drivers/regulator/sc2731-regulator.c257
1 files changed, 257 insertions, 0 deletions
diff --git a/drivers/regulator/sc2731-regulator.c b/drivers/regulator/sc2731-regulator.c
new file mode 100644
index 0000000000..5447e1a47d
--- /dev/null
+++ b/drivers/regulator/sc2731-regulator.c
@@ -0,0 +1,257 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2017 Spreadtrum Communications Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+/*
+ * SC2731 regulator lock register
+ */
+#define SC2731_PWR_WR_PROT 0xf0c
+#define SC2731_WR_UNLOCK_VALUE 0x6e7f
+
+/*
+ * SC2731 enable register
+ */
+#define SC2731_POWER_PD_SW 0xc28
+#define SC2731_LDO_CAMA0_PD 0xcfc
+#define SC2731_LDO_CAMA1_PD 0xd04
+#define SC2731_LDO_CAMMOT_PD 0xd0c
+#define SC2731_LDO_VLDO_PD 0xd6c
+#define SC2731_LDO_EMMCCORE_PD 0xd2c
+#define SC2731_LDO_SDCORE_PD 0xd74
+#define SC2731_LDO_SDIO_PD 0xd70
+#define SC2731_LDO_WIFIPA_PD 0xd4c
+#define SC2731_LDO_USB33_PD 0xd5c
+#define SC2731_LDO_CAMD0_PD 0xd7c
+#define SC2731_LDO_CAMD1_PD 0xd84
+#define SC2731_LDO_CON_PD 0xd8c
+#define SC2731_LDO_CAMIO_PD 0xd94
+#define SC2731_LDO_SRAM_PD 0xd78
+
+/*
+ * SC2731 enable mask
+ */
+#define SC2731_DCDC_CPU0_PD_MASK BIT(4)
+#define SC2731_DCDC_CPU1_PD_MASK BIT(3)
+#define SC2731_DCDC_RF_PD_MASK BIT(11)
+#define SC2731_LDO_CAMA0_PD_MASK BIT(0)
+#define SC2731_LDO_CAMA1_PD_MASK BIT(0)
+#define SC2731_LDO_CAMMOT_PD_MASK BIT(0)
+#define SC2731_LDO_VLDO_PD_MASK BIT(0)
+#define SC2731_LDO_EMMCCORE_PD_MASK BIT(0)
+#define SC2731_LDO_SDCORE_PD_MASK BIT(0)
+#define SC2731_LDO_SDIO_PD_MASK BIT(0)
+#define SC2731_LDO_WIFIPA_PD_MASK BIT(0)
+#define SC2731_LDO_USB33_PD_MASK BIT(0)
+#define SC2731_LDO_CAMD0_PD_MASK BIT(0)
+#define SC2731_LDO_CAMD1_PD_MASK BIT(0)
+#define SC2731_LDO_CON_PD_MASK BIT(0)
+#define SC2731_LDO_CAMIO_PD_MASK BIT(0)
+#define SC2731_LDO_SRAM_PD_MASK BIT(0)
+
+/*
+ * SC2731 vsel register
+ */
+#define SC2731_DCDC_CPU0_VOL 0xc54
+#define SC2731_DCDC_CPU1_VOL 0xc64
+#define SC2731_DCDC_RF_VOL 0xcb8
+#define SC2731_LDO_CAMA0_VOL 0xd00
+#define SC2731_LDO_CAMA1_VOL 0xd08
+#define SC2731_LDO_CAMMOT_VOL 0xd10
+#define SC2731_LDO_VLDO_VOL 0xd28
+#define SC2731_LDO_EMMCCORE_VOL 0xd30
+#define SC2731_LDO_SDCORE_VOL 0xd38
+#define SC2731_LDO_SDIO_VOL 0xd40
+#define SC2731_LDO_WIFIPA_VOL 0xd50
+#define SC2731_LDO_USB33_VOL 0xd60
+#define SC2731_LDO_CAMD0_VOL 0xd80
+#define SC2731_LDO_CAMD1_VOL 0xd88
+#define SC2731_LDO_CON_VOL 0xd90
+#define SC2731_LDO_CAMIO_VOL 0xd98
+#define SC2731_LDO_SRAM_VOL 0xdB0
+
+/*
+ * SC2731 vsel register mask
+ */
+#define SC2731_DCDC_CPU0_VOL_MASK GENMASK(8, 0)
+#define SC2731_DCDC_CPU1_VOL_MASK GENMASK(8, 0)
+#define SC2731_DCDC_RF_VOL_MASK GENMASK(8, 0)
+#define SC2731_LDO_CAMA0_VOL_MASK GENMASK(7, 0)
+#define SC2731_LDO_CAMA1_VOL_MASK GENMASK(7, 0)
+#define SC2731_LDO_CAMMOT_VOL_MASK GENMASK(7, 0)
+#define SC2731_LDO_VLDO_VOL_MASK GENMASK(7, 0)
+#define SC2731_LDO_EMMCCORE_VOL_MASK GENMASK(7, 0)
+#define SC2731_LDO_SDCORE_VOL_MASK GENMASK(7, 0)
+#define SC2731_LDO_SDIO_VOL_MASK GENMASK(7, 0)
+#define SC2731_LDO_WIFIPA_VOL_MASK GENMASK(7, 0)
+#define SC2731_LDO_USB33_VOL_MASK GENMASK(7, 0)
+#define SC2731_LDO_CAMD0_VOL_MASK GENMASK(6, 0)
+#define SC2731_LDO_CAMD1_VOL_MASK GENMASK(6, 0)
+#define SC2731_LDO_CON_VOL_MASK GENMASK(6, 0)
+#define SC2731_LDO_CAMIO_VOL_MASK GENMASK(6, 0)
+#define SC2731_LDO_SRAM_VOL_MASK GENMASK(6, 0)
+
+enum sc2731_regulator_id {
+ SC2731_BUCK_CPU0,
+ SC2731_BUCK_CPU1,
+ SC2731_BUCK_RF,
+ SC2731_LDO_CAMA0,
+ SC2731_LDO_CAMA1,
+ SC2731_LDO_CAMMOT,
+ SC2731_LDO_VLDO,
+ SC2731_LDO_EMMCCORE,
+ SC2731_LDO_SDCORE,
+ SC2731_LDO_SDIO,
+ SC2731_LDO_WIFIPA,
+ SC2731_LDO_USB33,
+ SC2731_LDO_CAMD0,
+ SC2731_LDO_CAMD1,
+ SC2731_LDO_CON,
+ SC2731_LDO_CAMIO,
+ SC2731_LDO_SRAM,
+};
+
+static const struct regulator_ops sc2731_regu_linear_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+#define SC2731_REGU_LINEAR(_id, en_reg, en_mask, vreg, vmask, \
+ vstep, vmin, vmax) { \
+ .name = #_id, \
+ .of_match = of_match_ptr(#_id), \
+ .ops = &sc2731_regu_linear_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = SC2731_##_id, \
+ .owner = THIS_MODULE, \
+ .min_uV = vmin, \
+ .n_voltages = ((vmax) - (vmin)) / (vstep) + 1, \
+ .uV_step = vstep, \
+ .enable_is_inverted = true, \
+ .enable_val = 0, \
+ .enable_reg = en_reg, \
+ .enable_mask = en_mask, \
+ .vsel_reg = vreg, \
+ .vsel_mask = vmask, \
+}
+
+static const struct regulator_desc regulators[] = {
+ SC2731_REGU_LINEAR(BUCK_CPU0, SC2731_POWER_PD_SW,
+ SC2731_DCDC_CPU0_PD_MASK, SC2731_DCDC_CPU0_VOL,
+ SC2731_DCDC_CPU0_VOL_MASK, 3125, 400000, 1996875),
+ SC2731_REGU_LINEAR(BUCK_CPU1, SC2731_POWER_PD_SW,
+ SC2731_DCDC_CPU1_PD_MASK, SC2731_DCDC_CPU1_VOL,
+ SC2731_DCDC_CPU1_VOL_MASK, 3125, 400000, 1996875),
+ SC2731_REGU_LINEAR(BUCK_RF, SC2731_POWER_PD_SW, SC2731_DCDC_RF_PD_MASK,
+ SC2731_DCDC_RF_VOL, SC2731_DCDC_RF_VOL_MASK,
+ 3125, 600000, 2196875),
+ SC2731_REGU_LINEAR(LDO_CAMA0, SC2731_LDO_CAMA0_PD,
+ SC2731_LDO_CAMA0_PD_MASK, SC2731_LDO_CAMA0_VOL,
+ SC2731_LDO_CAMA0_VOL_MASK, 10000, 1200000, 3750000),
+ SC2731_REGU_LINEAR(LDO_CAMA1, SC2731_LDO_CAMA1_PD,
+ SC2731_LDO_CAMA1_PD_MASK, SC2731_LDO_CAMA1_VOL,
+ SC2731_LDO_CAMA1_VOL_MASK, 10000, 1200000, 3750000),
+ SC2731_REGU_LINEAR(LDO_CAMMOT, SC2731_LDO_CAMMOT_PD,
+ SC2731_LDO_CAMMOT_PD_MASK, SC2731_LDO_CAMMOT_VOL,
+ SC2731_LDO_CAMMOT_VOL_MASK, 10000, 1200000, 3750000),
+ SC2731_REGU_LINEAR(LDO_VLDO, SC2731_LDO_VLDO_PD,
+ SC2731_LDO_VLDO_PD_MASK, SC2731_LDO_VLDO_VOL,
+ SC2731_LDO_VLDO_VOL_MASK, 10000, 1200000, 3750000),
+ SC2731_REGU_LINEAR(LDO_EMMCCORE, SC2731_LDO_EMMCCORE_PD,
+ SC2731_LDO_EMMCCORE_PD_MASK, SC2731_LDO_EMMCCORE_VOL,
+ SC2731_LDO_EMMCCORE_VOL_MASK, 10000, 1200000,
+ 3750000),
+ SC2731_REGU_LINEAR(LDO_SDCORE, SC2731_LDO_SDCORE_PD,
+ SC2731_LDO_SDCORE_PD_MASK, SC2731_LDO_SDCORE_VOL,
+ SC2731_LDO_SDCORE_VOL_MASK, 10000, 1200000, 3750000),
+ SC2731_REGU_LINEAR(LDO_SDIO, SC2731_LDO_SDIO_PD,
+ SC2731_LDO_SDIO_PD_MASK, SC2731_LDO_SDIO_VOL,
+ SC2731_LDO_SDIO_VOL_MASK, 10000, 1200000, 3750000),
+ SC2731_REGU_LINEAR(LDO_WIFIPA, SC2731_LDO_WIFIPA_PD,
+ SC2731_LDO_WIFIPA_PD_MASK, SC2731_LDO_WIFIPA_VOL,
+ SC2731_LDO_WIFIPA_VOL_MASK, 10000, 1200000, 3750000),
+ SC2731_REGU_LINEAR(LDO_USB33, SC2731_LDO_USB33_PD,
+ SC2731_LDO_USB33_PD_MASK, SC2731_LDO_USB33_VOL,
+ SC2731_LDO_USB33_VOL_MASK, 10000, 1200000, 3750000),
+ SC2731_REGU_LINEAR(LDO_CAMD0, SC2731_LDO_CAMD0_PD,
+ SC2731_LDO_CAMD0_PD_MASK, SC2731_LDO_CAMD0_VOL,
+ SC2731_LDO_CAMD0_VOL_MASK, 6250, 1000000, 1793750),
+ SC2731_REGU_LINEAR(LDO_CAMD1, SC2731_LDO_CAMD1_PD,
+ SC2731_LDO_CAMD1_PD_MASK, SC2731_LDO_CAMD1_VOL,
+ SC2731_LDO_CAMD1_VOL_MASK, 6250, 1000000, 1793750),
+ SC2731_REGU_LINEAR(LDO_CON, SC2731_LDO_CON_PD,
+ SC2731_LDO_CON_PD_MASK, SC2731_LDO_CON_VOL,
+ SC2731_LDO_CON_VOL_MASK, 6250, 1000000, 1793750),
+ SC2731_REGU_LINEAR(LDO_CAMIO, SC2731_LDO_CAMIO_PD,
+ SC2731_LDO_CAMIO_PD_MASK, SC2731_LDO_CAMIO_VOL,
+ SC2731_LDO_CAMIO_VOL_MASK, 6250, 1000000, 1793750),
+ SC2731_REGU_LINEAR(LDO_SRAM, SC2731_LDO_SRAM_PD,
+ SC2731_LDO_SRAM_PD_MASK, SC2731_LDO_SRAM_VOL,
+ SC2731_LDO_SRAM_VOL_MASK, 6250, 1000000, 1793750),
+};
+
+static int sc2731_regulator_unlock(struct regmap *regmap)
+{
+ return regmap_write(regmap, SC2731_PWR_WR_PROT,
+ SC2731_WR_UNLOCK_VALUE);
+}
+
+static int sc2731_regulator_probe(struct platform_device *pdev)
+{
+ int i, ret;
+ struct regmap *regmap;
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+
+ regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!regmap) {
+ dev_err(&pdev->dev, "failed to get regmap.\n");
+ return -ENODEV;
+ }
+
+ ret = sc2731_regulator_unlock(regmap);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to release regulator lock\n");
+ return ret;
+ }
+
+ config.dev = &pdev->dev;
+ config.regmap = regmap;
+
+ for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+ rdev = devm_regulator_register(&pdev->dev, &regulators[i],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "failed to register regulator %s\n",
+ regulators[i].name);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static struct platform_driver sc2731_regulator_driver = {
+ .driver = {
+ .name = "sc27xx-regulator",
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+ .probe = sc2731_regulator_probe,
+};
+
+module_platform_driver(sc2731_regulator_driver);
+
+MODULE_AUTHOR("Chen Junhui <erick.chen@spreadtrum.com>");
+MODULE_DESCRIPTION("Spreadtrum SC2731 regulator driver");
+MODULE_LICENSE("GPL v2");