regulator: Add Freescale MC13783 driver
Sascha Hauer [Tue, 18 Aug 2009 23:43:50 +0000 (01:43 +0200)]
This driver provides basic support for the voltage regulators
integrated into the Freescale MC13783 PMIC. It is currently
only possible to enable/disable outputs, not to actually
set the voltage.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/regulator/Kconfig
drivers/regulator/Makefile
drivers/regulator/mc13783.c [new file with mode: 0644]

index 38ea5dc..c505714 100644 (file)
@@ -131,4 +131,12 @@ config REGULATOR_PCAP
         This driver provides support for the voltage regulators of the
         PCAP2 PMIC.
 
+config REGULATOR_MC13783
+       tristate "Support regulators on Freescale MC13783 PMIC"
+       depends on MFD_MC13783
+       help
+         Say y here to support the regulators found on the Freescale MC13783
+         PMIC.
+
 endif
+
index 3a4cdf5..5034830 100644 (file)
@@ -20,5 +20,6 @@ obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
 obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
 obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
 obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
+obj-$(CONFIG_REGULATOR_MC13783) += mc13783.o
 
 ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
diff --git a/drivers/regulator/mc13783.c b/drivers/regulator/mc13783.c
new file mode 100644 (file)
index 0000000..710211f
--- /dev/null
@@ -0,0 +1,410 @@
+/*
+ * Regulator Driver for Freescale MC13783 PMIC
+ *
+ * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
+ *
+ * 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-private.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/driver.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/mc13783.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+
+struct mc13783_regulator {
+       struct regulator_desc desc;
+       int reg;
+       int enable_bit;
+};
+
+static struct regulator_ops mc13783_regulator_ops;
+
+static struct mc13783_regulator mc13783_regulators[] = {
+       [MC13783_SW_SW3] = {
+               .desc = {
+                       .name   = "SW_SW3",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_SW_SW3,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_SWITCHERS_5,
+               .enable_bit = MC13783_SWCTRL_SW3_EN,
+       },
+       [MC13783_SW_PLL] = {
+               .desc = {
+                       .name   = "SW_PLL",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_SW_PLL,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_SWITCHERS_4,
+               .enable_bit = MC13783_SWCTRL_PLL_EN,
+       },
+       [MC13783_REGU_VAUDIO] = {
+               .desc = {
+                       .name   = "REGU_VAUDIO",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VAUDIO,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_0,
+               .enable_bit = MC13783_REGCTRL_VAUDIO_EN,
+       },
+       [MC13783_REGU_VIOHI] = {
+               .desc = {
+                       .name   = "REGU_VIOHI",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VIOHI,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_0,
+               .enable_bit = MC13783_REGCTRL_VIOHI_EN,
+       },
+       [MC13783_REGU_VIOLO] = {
+               .desc = {
+                       .name   = "REGU_VIOLO",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VIOLO,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_0,
+               .enable_bit = MC13783_REGCTRL_VIOLO_EN,
+       },
+       [MC13783_REGU_VDIG] = {
+               .desc = {
+                       .name   = "REGU_VDIG",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VDIG,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_0,
+               .enable_bit = MC13783_REGCTRL_VDIG_EN,
+       },
+       [MC13783_REGU_VGEN] = {
+               .desc = {
+                       .name   = "REGU_VGEN",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VGEN,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_0,
+               .enable_bit = MC13783_REGCTRL_VGEN_EN,
+       },
+       [MC13783_REGU_VRFDIG] = {
+               .desc = {
+                       .name   = "REGU_VRFDIG",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VRFDIG,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_0,
+               .enable_bit = MC13783_REGCTRL_VRFDIG_EN,
+       },
+       [MC13783_REGU_VRFREF] = {
+               .desc = {
+                       .name   = "REGU_VRFREF",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VRFREF,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_0,
+               .enable_bit = MC13783_REGCTRL_VRFREF_EN,
+       },
+       [MC13783_REGU_VRFCP] = {
+               .desc = {
+                       .name   = "REGU_VRFCP",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VRFCP,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_0,
+               .enable_bit = MC13783_REGCTRL_VRFCP_EN,
+       },
+       [MC13783_REGU_VSIM] = {
+               .desc = {
+                       .name   = "REGU_VSIM",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VSIM,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_1,
+               .enable_bit = MC13783_REGCTRL_VSIM_EN,
+       },
+       [MC13783_REGU_VESIM] = {
+               .desc = {
+                       .name   = "REGU_VESIM",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VESIM,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_1,
+               .enable_bit = MC13783_REGCTRL_VESIM_EN,
+       },
+       [MC13783_REGU_VCAM] = {
+               .desc = {
+                       .name   = "REGU_VCAM",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VCAM,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_1,
+               .enable_bit = MC13783_REGCTRL_VCAM_EN,
+       },
+       [MC13783_REGU_VRFBG] = {
+               .desc = {
+                       .name   = "REGU_VRFBG",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VRFBG,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_1,
+               .enable_bit = MC13783_REGCTRL_VRFBG_EN,
+       },
+       [MC13783_REGU_VVIB] = {
+               .desc = {
+                       .name   = "REGU_VVIB",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VVIB,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_1,
+               .enable_bit = MC13783_REGCTRL_VVIB_EN,
+       },
+       [MC13783_REGU_VRF1] = {
+               .desc = {
+                       .name   = "REGU_VRF1",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VRF1,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_1,
+               .enable_bit = MC13783_REGCTRL_VRF1_EN,
+       },
+       [MC13783_REGU_VRF2] = {
+               .desc = {
+                       .name   = "REGU_VRF2",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VRF2,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_1,
+               .enable_bit = MC13783_REGCTRL_VRF2_EN,
+       },
+       [MC13783_REGU_VMMC1] = {
+               .desc = {
+                       .name   = "REGU_VMMC1",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VMMC1,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_1,
+               .enable_bit = MC13783_REGCTRL_VMMC1_EN,
+       },
+       [MC13783_REGU_VMMC2] = {
+               .desc = {
+                       .name   = "REGU_VMMC2",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_VMMC2,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_REGULATOR_MODE_1,
+               .enable_bit = MC13783_REGCTRL_VMMC2_EN,
+       },
+       [MC13783_REGU_GPO1] = {
+               .desc = {
+                       .name   = "REGU_GPO1",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_GPO1,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_POWER_MISCELLANEOUS,
+               .enable_bit = MC13783_REGCTRL_GPO1_EN,
+       },
+       [MC13783_REGU_GPO2] = {
+               .desc = {
+                       .name   = "REGU_GPO2",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_GPO2,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_POWER_MISCELLANEOUS,
+               .enable_bit = MC13783_REGCTRL_GPO2_EN,
+       },
+       [MC13783_REGU_GPO3] = {
+               .desc = {
+                       .name   = "REGU_GPO3",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_GPO3,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_POWER_MISCELLANEOUS,
+               .enable_bit = MC13783_REGCTRL_GPO3_EN,
+       },
+       [MC13783_REGU_GPO4] = {
+               .desc = {
+                       .name   = "REGU_GPO4",
+                       .ops    = &mc13783_regulator_ops,
+                       .type   = REGULATOR_VOLTAGE,
+                       .id     = MC13783_REGU_GPO4,
+                       .owner  = THIS_MODULE,
+               },
+               .reg = MC13783_REG_POWER_MISCELLANEOUS,
+               .enable_bit = MC13783_REGCTRL_GPO4_EN,
+       },
+};
+
+struct mc13783_priv {
+       struct regulator_desc desc[ARRAY_SIZE(mc13783_regulators)];
+       struct mc13783 *mc13783;
+       struct regulator_dev *regulators[0];
+};
+
+static int mc13783_enable(struct regulator_dev *rdev)
+{
+       struct mc13783_priv *priv = rdev_get_drvdata(rdev);
+       int id = rdev_get_id(rdev);
+
+       dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+       return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,
+                       mc13783_regulators[id].enable_bit,
+                       mc13783_regulators[id].enable_bit);
+}
+
+static int mc13783_disable(struct regulator_dev *rdev)
+{
+       struct mc13783_priv *priv = rdev_get_drvdata(rdev);
+       int id = rdev_get_id(rdev);
+
+       dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+       return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,
+                       mc13783_regulators[id].enable_bit, 0);
+}
+
+static int mc13783_is_enabled(struct regulator_dev *rdev)
+{
+       struct mc13783_priv *priv = rdev_get_drvdata(rdev);
+       int ret, id = rdev_get_id(rdev);
+       unsigned int val;
+
+       ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
+       if (ret)
+               return ret;
+
+       return (val & mc13783_regulators[id].enable_bit) != 0;
+}
+
+static struct regulator_ops mc13783_regulator_ops = {
+       .enable         = mc13783_enable,
+       .disable        = mc13783_disable,
+       .is_enabled     = mc13783_is_enabled,
+};
+
+static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
+{
+       struct mc13783_priv *priv;
+       struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);
+       struct mc13783_regulator_init_data *init_data;
+       int i, ret;
+
+       dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id);
+
+       priv = kzalloc(sizeof(*priv) + mc13783->num_regulators * sizeof(void *),
+                       GFP_KERNEL);
+       if (!priv)
+               return -ENOMEM;
+
+       priv->mc13783 = mc13783;
+
+       for (i = 0; i < mc13783->num_regulators; i++) {
+               init_data = &mc13783->regulators[i];
+               priv->regulators[i] = regulator_register(
+                               &mc13783_regulators[init_data->id].desc,
+                               &pdev->dev, init_data->init_data, priv);
+
+               if (IS_ERR(priv->regulators[i])) {
+                       dev_err(&pdev->dev, "failed to register regulator %s\n",
+                               mc13783_regulators[i].desc.name);
+                       ret = PTR_ERR(priv->regulators[i]);
+                       goto err;
+               }
+       }
+
+       platform_set_drvdata(pdev, priv);
+
+       return 0;
+err:
+       while (--i >= 0)
+               regulator_unregister(priv->regulators[i]);
+
+       kfree(priv);
+
+       return ret;
+}
+
+static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
+{
+       struct mc13783_priv *priv = platform_get_drvdata(pdev);
+       struct mc13783 *mc13783 = priv->mc13783;
+       int i;
+
+       for (i = 0; i < mc13783->num_regulators; i++)
+               regulator_unregister(priv->regulators[i]);
+
+       return 0;
+}
+
+static struct platform_driver mc13783_regulator_driver = {
+       .driver = {
+               .name   = "mc13783-regulator",
+               .owner  = THIS_MODULE,
+       },
+       .remove         = __devexit_p(mc13783_regulator_remove),
+};
+
+static int __init mc13783_regulator_init(void)
+{
+       return platform_driver_probe(&mc13783_regulator_driver,
+                       mc13783_regulator_probe);
+}
+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");
+MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de");
+MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
+MODULE_ALIAS("platform:mc13783-regulator");