Initial import

1 files changed, 481 insertions, 0 deletions

diff --git a/drivers/regulator/mc13783-regulator.c b/drivers/regulator/mc13783-regulator.c
new file mode 100644
index 000000000..fe4c7d677
--- /dev/null
+++ b/drivers/regulator/mc13783-regulator.c
@@ -0,0 +1,481 @@
+/*
+ * Regulator Driver for Freescale MC13783 PMIC
+ *
+ * Copyright 2010 Yong Shen <yong.shen@linaro.org>
+ * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
+ * Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/mfd/mc13783.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/driver.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include "mc13xxx.h"
+
+#define MC13783_REG_SWITCHERS0			24
+/* Enable does not exist for SW1A */
+#define MC13783_REG_SWITCHERS0_SW1AEN			0
+#define MC13783_REG_SWITCHERS0_SW1AVSEL			0
+#define MC13783_REG_SWITCHERS0_SW1AVSEL_M		(63 << 0)
+
+#define MC13783_REG_SWITCHERS1			25
+/* Enable does not exist for SW1B */
+#define MC13783_REG_SWITCHERS1_SW1BEN			0
+#define MC13783_REG_SWITCHERS1_SW1BVSEL			0
+#define MC13783_REG_SWITCHERS1_SW1BVSEL_M		(63 << 0)
+
+#define MC13783_REG_SWITCHERS2			26
+/* Enable does not exist for SW2A */
+#define MC13783_REG_SWITCHERS2_SW2AEN			0
+#define MC13783_REG_SWITCHERS2_SW2AVSEL			0
+#define MC13783_REG_SWITCHERS2_SW2AVSEL_M		(63 << 0)
+
+#define MC13783_REG_SWITCHERS3			27
+/* Enable does not exist for SW2B */
+#define MC13783_REG_SWITCHERS3_SW2BEN			0
+#define MC13783_REG_SWITCHERS3_SW2BVSEL			0
+#define MC13783_REG_SWITCHERS3_SW2BVSEL_M		(63 << 0)
+
+#define MC13783_REG_SWITCHERS5			29
+#define MC13783_REG_SWITCHERS5_SW3EN			(1 << 20)
+#define MC13783_REG_SWITCHERS5_SW3VSEL			18
+#define MC13783_REG_SWITCHERS5_SW3VSEL_M		(3 << 18)
+
+#define MC13783_REG_REGULATORSETTING0		30
+#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL		2
+#define MC13783_REG_REGULATORSETTING0_VDIGVSEL		4
+#define MC13783_REG_REGULATORSETTING0_VGENVSEL		6
+#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL	9
+#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL	11
+#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL		13
+#define MC13783_REG_REGULATORSETTING0_VSIMVSEL		14
+#define MC13783_REG_REGULATORSETTING0_VESIMVSEL		15
+#define MC13783_REG_REGULATORSETTING0_VCAMVSEL		16
+
+#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL_M	(3 << 2)
+#define MC13783_REG_REGULATORSETTING0_VDIGVSEL_M	(3 << 4)
+#define MC13783_REG_REGULATORSETTING0_VGENVSEL_M	(7 << 6)
+#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL_M	(3 << 9)
+#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL_M	(3 << 11)
+#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL_M	(1 << 13)
+#define MC13783_REG_REGULATORSETTING0_VSIMVSEL_M	(1 << 14)
+#define MC13783_REG_REGULATORSETTING0_VESIMVSEL_M	(1 << 15)
+#define MC13783_REG_REGULATORSETTING0_VCAMVSEL_M	(7 << 16)
+
+#define MC13783_REG_REGULATORSETTING1		31
+#define MC13783_REG_REGULATORSETTING1_VVIBVSEL		0
+#define MC13783_REG_REGULATORSETTING1_VRF1VSEL		2
+#define MC13783_REG_REGULATORSETTING1_VRF2VSEL		4
+#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL		6
+#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL		9
+
+#define MC13783_REG_REGULATORSETTING1_VVIBVSEL_M	(3 << 0)
+#define MC13783_REG_REGULATORSETTING1_VRF1VSEL_M	(3 << 2)
+#define MC13783_REG_REGULATORSETTING1_VRF2VSEL_M	(3 << 4)
+#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL_M	(7 << 6)
+#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL_M	(7 << 9)
+
+#define MC13783_REG_REGULATORMODE0		32
+#define MC13783_REG_REGULATORMODE0_VAUDIOEN		(1 << 0)
+#define MC13783_REG_REGULATORMODE0_VIOHIEN		(1 << 3)
+#define MC13783_REG_REGULATORMODE0_VIOLOEN		(1 << 6)
+#define MC13783_REG_REGULATORMODE0_VDIGEN		(1 << 9)
+#define MC13783_REG_REGULATORMODE0_VGENEN		(1 << 12)
+#define MC13783_REG_REGULATORMODE0_VRFDIGEN		(1 << 15)
+#define MC13783_REG_REGULATORMODE0_VRFREFEN		(1 << 18)
+#define MC13783_REG_REGULATORMODE0_VRFCPEN		(1 << 21)
+
+#define MC13783_REG_REGULATORMODE1		33
+#define MC13783_REG_REGULATORMODE1_VSIMEN		(1 << 0)
+#define MC13783_REG_REGULATORMODE1_VESIMEN		(1 << 3)
+#define MC13783_REG_REGULATORMODE1_VCAMEN		(1 << 6)
+#define MC13783_REG_REGULATORMODE1_VRFBGEN		(1 << 9)
+#define MC13783_REG_REGULATORMODE1_VVIBEN		(1 << 11)
+#define MC13783_REG_REGULATORMODE1_VRF1EN		(1 << 12)
+#define MC13783_REG_REGULATORMODE1_VRF2EN		(1 << 15)
+#define MC13783_REG_REGULATORMODE1_VMMC1EN		(1 << 18)
+#define MC13783_REG_REGULATORMODE1_VMMC2EN		(1 << 21)
+
+#define MC13783_REG_POWERMISC			34
+#define MC13783_REG_POWERMISC_GPO1EN			(1 << 6)
+#define MC13783_REG_POWERMISC_GPO2EN			(1 << 8)
+#define MC13783_REG_POWERMISC_GPO3EN			(1 << 10)
+#define MC13783_REG_POWERMISC_GPO4EN			(1 << 12)
+#define MC13783_REG_POWERMISC_PWGT1SPIEN		(1 << 15)
+#define MC13783_REG_POWERMISC_PWGT2SPIEN		(1 << 16)
+
+#define MC13783_REG_POWERMISC_PWGTSPI_M			(3 << 15)
+
+
+/* Voltage Values */
+static const int mc13783_sw1x_val[] = {
+	900000, 925000, 950000, 975000,
+	1000000, 1025000, 1050000, 1075000,
+	1100000, 1125000, 1150000, 1175000,
+	1200000, 1225000, 1250000, 1275000,
+	1300000, 1325000, 1350000, 1375000,
+	1400000, 1425000, 1450000, 1475000,
+	1500000, 1525000, 1550000, 1575000,
+	1600000, 1625000, 1650000, 1675000,
+	1700000, 1700000, 1700000, 1700000,
+	1800000, 1800000, 1800000, 1800000,
+	1850000, 1850000, 1850000, 1850000,
+	2000000, 2000000, 2000000, 2000000,
+	2100000, 2100000, 2100000, 2100000,
+	2200000, 2200000, 2200000, 2200000,
+	2200000, 2200000, 2200000, 2200000,
+	2200000, 2200000, 2200000, 2200000,
+};
+
+static const int mc13783_sw2x_val[] = {
+	900000, 925000, 950000, 975000,
+	1000000, 1025000, 1050000, 1075000,
+	1100000, 1125000, 1150000, 1175000,
+	1200000, 1225000, 1250000, 1275000,
+	1300000, 1325000, 1350000, 1375000,
+	1400000, 1425000, 1450000, 1475000,
+	1500000, 1525000, 1550000, 1575000,
+	1600000, 1625000, 1650000, 1675000,
+	1700000, 1700000, 1700000, 1700000,
+	1800000, 1800000, 1800000, 1800000,
+	1900000, 1900000, 1900000, 1900000,
+	2000000, 2000000, 2000000, 2000000,
+	2100000, 2100000, 2100000, 2100000,
+	2200000, 2200000, 2200000, 2200000,
+	2200000, 2200000, 2200000, 2200000,
+	2200000, 2200000, 2200000, 2200000,
+};
+
+static const unsigned int mc13783_sw3_val[] = {
+	5000000, 5000000, 5000000, 5500000,
+};
+
+static const unsigned int mc13783_vaudio_val[] = {
+	2775000,
+};
+
+static const unsigned int mc13783_viohi_val[] = {
+	2775000,
+};
+
+static const unsigned int mc13783_violo_val[] = {
+	1200000, 1300000, 1500000, 1800000,
+};
+
+static const unsigned int mc13783_vdig_val[] = {
+	1200000, 1300000, 1500000, 1800000,
+};
+
+static const unsigned int mc13783_vgen_val[] = {
+	1200000, 1300000, 1500000, 1800000,
+	1100000, 2000000, 2775000, 2400000,
+};
+
+static const unsigned int mc13783_vrfdig_val[] = {
+	1200000, 1500000, 1800000, 1875000,
+};
+
+static const unsigned int mc13783_vrfref_val[] = {
+	2475000, 2600000, 2700000, 2775000,
+};
+
+static const unsigned int mc13783_vrfcp_val[] = {
+	2700000, 2775000,
+};
+
+static const unsigned int mc13783_vsim_val[] = {
+	1800000, 2900000, 3000000,
+};
+
+static const unsigned int mc13783_vesim_val[] = {
+	1800000, 2900000,
+};
+
+static const unsigned int mc13783_vcam_val[] = {
+	1500000, 1800000, 2500000, 2550000,
+	2600000, 2750000, 2800000, 3000000,
+};
+
+static const unsigned int mc13783_vrfbg_val[] = {
+	1250000,
+};
+
+static const unsigned int mc13783_vvib_val[] = {
+	1300000, 1800000, 2000000, 3000000,
+};
+
+static const unsigned int mc13783_vmmc_val[] = {
+	1600000, 1800000, 2000000, 2600000,
+	2700000, 2800000, 2900000, 3000000,
+};
+
+static const unsigned int mc13783_vrf_val[] = {
+	1500000, 1875000, 2700000, 2775000,
+};
+
+static const unsigned int mc13783_gpo_val[] = {
+	3100000,
+};
+
+static const unsigned int mc13783_pwgtdrv_val[] = {
+	5500000,
+};
+
+static struct regulator_ops mc13783_gpo_regulator_ops;
+
+#define MC13783_DEFINE(prefix, name, reg, vsel_reg, voltages)	\
+	MC13xxx_DEFINE(MC13783_REG_, name, reg, vsel_reg, voltages, \
+			mc13xxx_regulator_ops)
+
+#define MC13783_FIXED_DEFINE(prefix, name, reg, voltages)		\
+	MC13xxx_FIXED_DEFINE(MC13783_REG_, name, reg, voltages, \
+			mc13xxx_fixed_regulator_ops)
+
+#define MC13783_GPO_DEFINE(prefix, name, reg, voltages)		\
+	MC13xxx_GPO_DEFINE(MC13783_REG_, name, reg, voltages, \
+			mc13783_gpo_regulator_ops)
+
+#define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages)		\
+	MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages)
+#define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages)		\
+	MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages)
+
+static struct mc13xxx_regulator mc13783_regulators[] = {
+	MC13783_DEFINE_SW(SW1A, SWITCHERS0, SWITCHERS0, mc13783_sw1x_val),
+	MC13783_DEFINE_SW(SW1B, SWITCHERS1, SWITCHERS1, mc13783_sw1x_val),
+	MC13783_DEFINE_SW(SW2A, SWITCHERS2, SWITCHERS2, mc13783_sw2x_val),
+	MC13783_DEFINE_SW(SW2B, SWITCHERS3, SWITCHERS3, mc13783_sw2x_val),
+	MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val),
+
+	MC13783_FIXED_DEFINE(REG, VAUDIO, REGULATORMODE0, mc13783_vaudio_val),
+	MC13783_FIXED_DEFINE(REG, VIOHI, REGULATORMODE0, mc13783_viohi_val),
+	MC13783_DEFINE_REGU(VIOLO, REGULATORMODE0, REGULATORSETTING0,
+			    mc13783_violo_val),
+	MC13783_DEFINE_REGU(VDIG, REGULATORMODE0, REGULATORSETTING0,
+			    mc13783_vdig_val),
+	MC13783_DEFINE_REGU(VGEN, REGULATORMODE0, REGULATORSETTING0,
+			    mc13783_vgen_val),
+	MC13783_DEFINE_REGU(VRFDIG, REGULATORMODE0, REGULATORSETTING0,
+			    mc13783_vrfdig_val),
+	MC13783_DEFINE_REGU(VRFREF, REGULATORMODE0, REGULATORSETTING0,
+			    mc13783_vrfref_val),
+	MC13783_DEFINE_REGU(VRFCP, REGULATORMODE0, REGULATORSETTING0,
+			    mc13783_vrfcp_val),
+	MC13783_DEFINE_REGU(VSIM, REGULATORMODE1, REGULATORSETTING0,
+			    mc13783_vsim_val),
+	MC13783_DEFINE_REGU(VESIM, REGULATORMODE1, REGULATORSETTING0,
+			    mc13783_vesim_val),
+	MC13783_DEFINE_REGU(VCAM, REGULATORMODE1, REGULATORSETTING0,
+			    mc13783_vcam_val),
+	MC13783_FIXED_DEFINE(REG, VRFBG, REGULATORMODE1, mc13783_vrfbg_val),
+	MC13783_DEFINE_REGU(VVIB, REGULATORMODE1, REGULATORSETTING1,
+			    mc13783_vvib_val),
+	MC13783_DEFINE_REGU(VRF1, REGULATORMODE1, REGULATORSETTING1,
+			    mc13783_vrf_val),
+	MC13783_DEFINE_REGU(VRF2, REGULATORMODE1, REGULATORSETTING1,
+			    mc13783_vrf_val),
+	MC13783_DEFINE_REGU(VMMC1, REGULATORMODE1, REGULATORSETTING1,
+			    mc13783_vmmc_val),
+	MC13783_DEFINE_REGU(VMMC2, REGULATORMODE1, REGULATORSETTING1,
+			    mc13783_vmmc_val),
+	MC13783_GPO_DEFINE(REG, GPO1, POWERMISC, mc13783_gpo_val),
+	MC13783_GPO_DEFINE(REG, GPO2, POWERMISC, mc13783_gpo_val),
+	MC13783_GPO_DEFINE(REG, GPO3, POWERMISC, mc13783_gpo_val),
+	MC13783_GPO_DEFINE(REG, GPO4, POWERMISC, mc13783_gpo_val),
+	MC13783_GPO_DEFINE(REG, PWGT1SPI, POWERMISC, mc13783_pwgtdrv_val),
+	MC13783_GPO_DEFINE(REG, PWGT2SPI, POWERMISC, mc13783_pwgtdrv_val),
+};
+
+static int mc13783_powermisc_rmw(struct mc13xxx_regulator_priv *priv, u32 mask,
+		u32 val)
+{
+	struct mc13xxx *mc13783 = priv->mc13xxx;
+	int ret;
+	u32 valread;
+
+	BUG_ON(val & ~mask);
+
+	mc13xxx_lock(priv->mc13xxx);
+	ret = mc13xxx_reg_read(mc13783, MC13783_REG_POWERMISC, &valread);
+	if (ret)
+		goto out;
+
+	/* Update the stored state for Power Gates. */
+	priv->powermisc_pwgt_state =
+				(priv->powermisc_pwgt_state & ~mask) | val;
+	priv->powermisc_pwgt_state &= MC13783_REG_POWERMISC_PWGTSPI_M;
+
+	/* Construct the new register value */
+	valread = (valread & ~mask) | val;
+	/* Overwrite the PWGTxEN with the stored version */
+	valread = (valread & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
+						priv->powermisc_pwgt_state;
+
+	ret = mc13xxx_reg_write(mc13783, MC13783_REG_POWERMISC, valread);
+out:
+	mc13xxx_unlock(priv->mc13xxx);
+	return ret;
+}
+
+static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev)
+{
+	struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+	struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+	int id = rdev_get_id(rdev);
+	u32 en_val = mc13xxx_regulators[id].enable_bit;
+
+	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+	/* Power Gate enable value is 0 */
+	if (id == MC13783_REG_PWGT1SPI ||
+	    id == MC13783_REG_PWGT2SPI)
+		en_val = 0;
+
+	return mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit,
+					en_val);
+}
+
+static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev)
+{
+	struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+	struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+	int id = rdev_get_id(rdev);
+	u32 dis_val = 0;
+
+	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+	/* Power Gate disable value is 1 */
+	if (id == MC13783_REG_PWGT1SPI ||
+	    id == MC13783_REG_PWGT2SPI)
+		dis_val = mc13xxx_regulators[id].enable_bit;
+
+	return mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit,
+					dis_val);
+}
+
+static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev)
+{
+	struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+	struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+	int ret, id = rdev_get_id(rdev);
+	unsigned int val;
+
+	mc13xxx_lock(priv->mc13xxx);
+	ret = mc13xxx_reg_read(priv->mc13xxx, mc13xxx_regulators[id].reg, &val);
+	mc13xxx_unlock(priv->mc13xxx);
+
+	if (ret)
+		return ret;
+
+	/* Power Gates state is stored in powermisc_pwgt_state
+	 * where the meaning of bits is negated */
+	val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
+	      (priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M);
+
+	return (val & mc13xxx_regulators[id].enable_bit) != 0;
+}
+
+static struct regulator_ops mc13783_gpo_regulator_ops = {
+	.enable = mc13783_gpo_regulator_enable,
+	.disable = mc13783_gpo_regulator_disable,
+	.is_enabled = mc13783_gpo_regulator_is_enabled,
+	.list_voltage = regulator_list_voltage_table,
+	.set_voltage = mc13xxx_fixed_regulator_set_voltage,
+};
+
+static int mc13783_regulator_probe(struct platform_device *pdev)
+{
+	struct mc13xxx_regulator_priv *priv;
+	struct mc13xxx *mc13783 = dev_get_drvdata(pdev->dev.parent);
+	struct mc13xxx_regulator_platform_data *pdata =
+		dev_get_platdata(&pdev->dev);
+	struct mc13xxx_regulator_init_data *mc13xxx_data;
+	struct regulator_config config = { };
+	int i, num_regulators;
+
+	num_regulators = mc13xxx_get_num_regulators_dt(pdev);
+
+	if (num_regulators <= 0 && pdata)
+		num_regulators = pdata->num_regulators;
+	if (num_regulators <= 0)
+		return -EINVAL;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv) +
+			num_regulators * sizeof(priv->regulators[0]),
+			GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->num_regulators = num_regulators;
+	priv->mc13xxx_regulators = mc13783_regulators;
+	priv->mc13xxx = mc13783;
+	platform_set_drvdata(pdev, priv);
+
+	mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13783_regulators,
+					ARRAY_SIZE(mc13783_regulators));
+
+	for (i = 0; i < priv->num_regulators; i++) {
+		struct regulator_init_data *init_data;
+		struct regulator_desc *desc;
+		struct device_node *node = NULL;
+		int id;
+
+		if (mc13xxx_data) {
+			id = mc13xxx_data[i].id;
+			init_data = mc13xxx_data[i].init_data;
+			node = mc13xxx_data[i].node;
+		} else {
+			id = pdata->regulators[i].id;
+			init_data = pdata->regulators[i].init_data;
+		}
+		desc = &mc13783_regulators[id].desc;
+
+		config.dev = &pdev->dev;
+		config.init_data = init_data;
+		config.driver_data = priv;
+		config.of_node = node;
+
+		priv->regulators[i] = devm_regulator_register(&pdev->dev, desc,
+							      &config);
+		if (IS_ERR(priv->regulators[i])) {
+			dev_err(&pdev->dev, "failed to register regulator %s\n",
+				mc13783_regulators[i].desc.name);
+			return PTR_ERR(priv->regulators[i]);
+		}
+	}
+
+	return 0;
+}
+
+static struct platform_driver mc13783_regulator_driver = {
+	.driver	= {
+		.name	= "mc13783-regulator",
+	},
+	.probe		= mc13783_regulator_probe,
+};
+
+static int __init mc13783_regulator_init(void)
+{
+	return platform_driver_register(&mc13783_regulator_driver);
+}
+subsys_initcall(mc13783_regulator_init);
+
+static void __exit mc13783_regulator_exit(void)
+{
+	platform_driver_unregister(&mc13783_regulator_driver);
+}
+module_exit(mc13783_regulator_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
+MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
+MODULE_ALIAS("platform:mc13783-regulator");