Merge "platform: msm: Add QPNP PMIC vibrator driver"
diff --git a/Documentation/devicetree/bindings/platform/msm/qpnp-vibrator.txt b/Documentation/devicetree/bindings/platform/msm/qpnp-vibrator.txt
new file mode 100644
index 0000000..87fa8d9
--- /dev/null
+++ b/Documentation/devicetree/bindings/platform/msm/qpnp-vibrator.txt
@@ -0,0 +1,25 @@
+QPNP Vibrator
+
+QPNP (Qualcomm Plug N Play) vibrator is a peripheral on
+Qualcomm PMICs. The PMIC is connected to Host processor
+via SPMI bus.
+
+Required Properties:
+ - status: default status is set to "disabled. Must be "okay"
+ - compatible: must be "qcom,qpnp-vibrator"
+ - label: name which describes the device
+ - reg: address of device
+
+Optional Properties:
+ - qcom,vib-timeout-ms: timeout of vibrator, in ms. Default 15000 ms
+ - qcom,vib-vtg-level-mV: voltage level, in mV. Default 3100 mV
+
+Example:
+ qcom,vib@c000 {
+ status = "okay";
+ compatible = "qcom,qpnp-vibrator";
+ reg = <0xc000 0x100>;
+ label = "vibrator";
+ qcom,vib-timeout-ms = <15000>;
+ qcom,vib-vtg-level-mV = <3100>;
+ };
diff --git a/drivers/platform/msm/Kconfig b/drivers/platform/msm/Kconfig
index 9394986..f4dff66 100644
--- a/drivers/platform/msm/Kconfig
+++ b/drivers/platform/msm/Kconfig
@@ -73,6 +73,15 @@
PMIC. These clocks are typically wired through alternate functions
on gpio pins.
+config QPNP_VIBRATOR
+ tristate "Vibrator support for QPNP PMIC"
+ depends on OF_SPMI
+ help
+ This option enables device driver support for the vibrator
+ on the Qualcomm's QPNP PMICs. The vibrator is connected on the
+ VIB_DRV_N line and can be controlled manually or by the DTEST lines.
+ It uses the android timed-output framework.
+
config IPA
tristate "IPA support"
depends on SPS
diff --git a/drivers/platform/msm/Makefile b/drivers/platform/msm/Makefile
index 919c07f..a679fb9 100644
--- a/drivers/platform/msm/Makefile
+++ b/drivers/platform/msm/Makefile
@@ -7,5 +7,6 @@
obj-$(CONFIG_SPS) += sps/
obj-$(CONFIG_QPNP_PWM) += qpnp-pwm.o
obj-$(CONFIG_QPNP_POWER_ON) += qpnp-power-on.o
+obj-$(CONFIG_QPNP_VIBRATOR) += qpnp-vibrator.o
obj-$(CONFIG_QPNP_CLKDIV) += qpnp-clkdiv.o
obj-$(CONFIG_MSM_AVTIMER) += avtimer.o
diff --git a/drivers/platform/msm/qpnp-vibrator.c b/drivers/platform/msm/qpnp-vibrator.c
new file mode 100644
index 0000000..ca3832d
--- /dev/null
+++ b/drivers/platform/msm/qpnp-vibrator.c
@@ -0,0 +1,343 @@
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/hrtimer.h>
+#include <linux/of_device.h>
+#include <linux/spmi.h>
+
+#include <linux/qpnp/vibrator.h>
+#include "../../staging/android/timed_output.h"
+
+#define QPNP_VIB_VTG_CTL(base) (base + 0x41)
+#define QPNP_VIB_EN_CTL(base) (base + 0x46)
+
+#define QPNP_VIB_MAX_LEVEL 31
+#define QPNP_VIB_MIN_LEVEL 12
+
+#define QPNP_VIB_DEFAULT_TIMEOUT 15000
+#define QPNP_VIB_DEFAULT_VTG_LVL 3100
+
+#define QPNP_VIB_EN BIT(7)
+#define QPNP_VIB_VTG_SET_MASK 0x1F
+#define QPNP_VIB_LOGIC_SHIFT 4
+
+struct qpnp_vib {
+ struct spmi_device *spmi;
+ struct hrtimer vib_timer;
+ struct timed_output_dev timed_dev;
+ struct work_struct work;
+
+ u8 reg_vtg_ctl;
+ u8 reg_en_ctl;
+ u16 base;
+ int state;
+ int vtg_level;
+ int timeout;
+ struct mutex lock;
+};
+
+static struct qpnp_vib *vib_dev;
+
+static int qpnp_vib_read_u8(struct qpnp_vib *vib, u8 *data, u16 reg)
+{
+ int rc;
+
+ rc = spmi_ext_register_readl(vib->spmi->ctrl, vib->spmi->sid,
+ reg, data, 1);
+ if (rc < 0)
+ dev_err(&vib->spmi->dev,
+ "Error reading address: %X - ret %X\n", reg, rc);
+
+ return rc;
+}
+
+static int qpnp_vib_write_u8(struct qpnp_vib *vib, u8 *data, u16 reg)
+{
+ int rc;
+
+ rc = spmi_ext_register_writel(vib->spmi->ctrl, vib->spmi->sid,
+ reg, data, 1);
+ if (rc < 0)
+ dev_err(&vib->spmi->dev,
+ "Error writing address: %X - ret %X\n", reg, rc);
+
+ return rc;
+}
+
+int qpnp_vibrator_config(struct qpnp_vib_config *vib_cfg)
+{
+ u8 reg = 0;
+ int rc = -EINVAL, level;
+
+ if (vib_dev == NULL) {
+ pr_err("%s: vib_dev is NULL\n", __func__);
+ return -ENODEV;
+ }
+
+ level = vib_cfg->drive_mV / 100;
+ if (level) {
+ if ((level < QPNP_VIB_MIN_LEVEL) ||
+ (level > QPNP_VIB_MAX_LEVEL)) {
+ dev_err(&vib_dev->spmi->dev, "Invalid voltage level\n");
+ return -EINVAL;
+ }
+ } else {
+ dev_err(&vib_dev->spmi->dev, "Voltage level not specified\n");
+ return -EINVAL;
+ }
+
+ /* Configure the VTG CTL regiser */
+ reg = vib_dev->reg_vtg_ctl;
+ reg &= ~QPNP_VIB_VTG_SET_MASK;
+ reg |= (level & QPNP_VIB_VTG_SET_MASK);
+ rc = qpnp_vib_write_u8(vib_dev, ®, QPNP_VIB_VTG_CTL(vib_dev->base));
+ if (rc)
+ return rc;
+ vib_dev->reg_vtg_ctl = reg;
+
+ /* Configure the VIB ENABLE regiser */
+ reg = vib_dev->reg_en_ctl;
+ reg |= (!!vib_cfg->active_low) << QPNP_VIB_LOGIC_SHIFT;
+ if (vib_cfg->enable_mode == QPNP_VIB_MANUAL)
+ reg |= QPNP_VIB_EN;
+ else
+ reg |= BIT(vib_cfg->enable_mode - 1);
+ rc = qpnp_vib_write_u8(vib_dev, ®, QPNP_VIB_EN_CTL(vib_dev->base));
+ if (rc < 0)
+ return rc;
+ vib_dev->reg_en_ctl = reg;
+
+ return rc;
+}
+EXPORT_SYMBOL(qpnp_vibrator_config);
+
+static int qpnp_vib_set(struct qpnp_vib *vib, int on)
+{
+ int rc;
+ u8 val;
+
+ if (on) {
+ val = vib->reg_vtg_ctl;
+ val &= ~QPNP_VIB_VTG_SET_MASK;
+ val |= (vib->vtg_level & QPNP_VIB_VTG_SET_MASK);
+ rc = qpnp_vib_write_u8(vib, &val, QPNP_VIB_VTG_CTL(vib->base));
+ if (rc < 0)
+ return rc;
+ vib->reg_vtg_ctl = val;
+ val = vib->reg_en_ctl;
+ val |= QPNP_VIB_EN;
+ rc = qpnp_vib_write_u8(vib, &val, QPNP_VIB_EN_CTL(vib->base));
+ if (rc < 0)
+ return rc;
+ vib->reg_en_ctl = val;
+ } else {
+ val = vib->reg_en_ctl;
+ val &= ~QPNP_VIB_EN;
+ rc = qpnp_vib_write_u8(vib, &val, QPNP_VIB_EN_CTL(vib->base));
+ if (rc < 0)
+ return rc;
+ vib->reg_en_ctl = val;
+ }
+
+ return rc;
+}
+
+static void qpnp_vib_enable(struct timed_output_dev *dev, int value)
+{
+ struct qpnp_vib *vib = container_of(dev, struct qpnp_vib,
+ timed_dev);
+
+ mutex_lock(&vib->lock);
+ hrtimer_cancel(&vib->vib_timer);
+
+ if (value == 0)
+ vib->state = 0;
+ else {
+ value = (value > vib->timeout ?
+ vib->timeout : value);
+ vib->state = 1;
+ hrtimer_start(&vib->vib_timer,
+ ktime_set(value / 1000, (value % 1000) * 1000000),
+ HRTIMER_MODE_REL);
+ }
+ mutex_unlock(&vib->lock);
+ schedule_work(&vib->work);
+}
+
+static void qpnp_vib_update(struct work_struct *work)
+{
+ struct qpnp_vib *vib = container_of(work, struct qpnp_vib,
+ work);
+ qpnp_vib_set(vib, vib->state);
+}
+
+static int qpnp_vib_get_time(struct timed_output_dev *dev)
+{
+ struct qpnp_vib *vib = container_of(dev, struct qpnp_vib,
+ timed_dev);
+
+ if (hrtimer_active(&vib->vib_timer)) {
+ ktime_t r = hrtimer_get_remaining(&vib->vib_timer);
+ return (int)ktime_to_us(r);
+ } else
+ return 0;
+}
+
+static enum hrtimer_restart qpnp_vib_timer_func(struct hrtimer *timer)
+{
+ struct qpnp_vib *vib = container_of(timer, struct qpnp_vib,
+ vib_timer);
+
+ vib->state = 0;
+ schedule_work(&vib->work);
+
+ return HRTIMER_NORESTART;
+}
+
+#ifdef CONFIG_PM
+static int qpnp_vibrator_suspend(struct device *dev)
+{
+ struct qpnp_vib *vib = dev_get_drvdata(dev);
+
+ hrtimer_cancel(&vib->vib_timer);
+ cancel_work_sync(&vib->work);
+ /* turn-off vibrator */
+ qpnp_vib_set(vib, 0);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(qpnp_vibrator_pm_ops, qpnp_vibrator_suspend, NULL);
+
+static int __devinit qpnp_vibrator_probe(struct spmi_device *spmi)
+{
+ struct qpnp_vib *vib;
+ struct resource *vib_resource;
+ int rc;
+ u8 val;
+ u32 temp_val;
+
+ vib = devm_kzalloc(&spmi->dev, sizeof(*vib), GFP_KERNEL);
+ if (!vib)
+ return -ENOMEM;
+
+ vib->spmi = spmi;
+
+ vib->timeout = QPNP_VIB_DEFAULT_TIMEOUT;
+ rc = of_property_read_u32(spmi->dev.of_node,
+ "qcom,vib-timeout-ms", &temp_val);
+ if (!rc) {
+ vib->timeout = temp_val;
+ } else if (rc != EINVAL) {
+ dev_err(&spmi->dev, "Unable to read vib timeout\n");
+ return rc;
+ }
+
+ vib->vtg_level = QPNP_VIB_DEFAULT_VTG_LVL;
+ rc = of_property_read_u32(spmi->dev.of_node,
+ "qcom,vib-vtg-level-mV", &temp_val);
+ if (!rc) {
+ vib->vtg_level = temp_val;
+ } else if (rc != -EINVAL) {
+ dev_err(&spmi->dev, "Unable to read vtg level\n");
+ return rc;
+ }
+
+ vib->vtg_level /= 100;
+
+ vib_resource = spmi_get_resource(spmi, 0, IORESOURCE_MEM, 0);
+ if (!vib_resource) {
+ dev_err(&spmi->dev, "Unable to get vibrator base address\n");
+ return -EINVAL;
+ }
+ vib->base = vib_resource->start;
+
+ /* save the control registers values */
+ rc = qpnp_vib_read_u8(vib, &val, QPNP_VIB_VTG_CTL(vib->base));
+ if (rc < 0)
+ return rc;
+ vib->reg_vtg_ctl = val;
+
+ rc = qpnp_vib_read_u8(vib, &val, QPNP_VIB_EN_CTL(vib->base));
+ if (rc < 0)
+ return rc;
+ vib->reg_en_ctl = val;
+
+ mutex_init(&vib->lock);
+ INIT_WORK(&vib->work, qpnp_vib_update);
+
+ hrtimer_init(&vib->vib_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ vib->vib_timer.function = qpnp_vib_timer_func;
+
+ vib->timed_dev.name = "vibrator";
+ vib->timed_dev.get_time = qpnp_vib_get_time;
+ vib->timed_dev.enable = qpnp_vib_enable;
+
+ dev_set_drvdata(&spmi->dev, vib);
+
+ rc = timed_output_dev_register(&vib->timed_dev);
+ if (rc < 0)
+ return rc;
+
+ vib_dev = vib;
+
+ return rc;
+}
+
+static int __devexit qpnp_vibrator_remove(struct spmi_device *spmi)
+{
+ struct qpnp_vib *vib = dev_get_drvdata(&spmi->dev);
+
+ cancel_work_sync(&vib->work);
+ hrtimer_cancel(&vib->vib_timer);
+ timed_output_dev_unregister(&vib->timed_dev);
+ mutex_destroy(&vib->lock);
+
+ return 0;
+}
+
+static struct of_device_id spmi_match_table[] = {
+ { .compatible = "qcom,qpnp-vibrator",
+ },
+ {}
+};
+
+static struct spmi_driver qpnp_vibrator_driver = {
+ .driver = {
+ .name = "qcom,qpnp-vibrator",
+ .of_match_table = spmi_match_table,
+ .pm = &qpnp_vibrator_pm_ops,
+ },
+ .probe = qpnp_vibrator_probe,
+ .remove = __devexit_p(qpnp_vibrator_remove),
+};
+
+static int __init qpnp_vibrator_init(void)
+{
+ return spmi_driver_register(&qpnp_vibrator_driver);
+}
+module_init(qpnp_vibrator_init);
+
+static void __exit qpnp_vibrator_exit(void)
+{
+ return spmi_driver_unregister(&qpnp_vibrator_driver);
+}
+module_exit(qpnp_vibrator_exit);
+
+MODULE_DESCRIPTION("qpnp vibrator driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/qpnp/vibrator.h b/include/linux/qpnp/vibrator.h
new file mode 100644
index 0000000..aa823be
--- /dev/null
+++ b/include/linux/qpnp/vibrator.h
@@ -0,0 +1,39 @@
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __QPNP_VIBRATOR_H__
+#define __QPNP_VIBRATOR_H__
+
+enum qpnp_vib_en_mode {
+ QPNP_VIB_MANUAL,
+ QPNP_VIB_DTEST1,
+ QPNP_VIB_DTEST2,
+ QPNP_VIB_DTEST3,
+};
+
+struct qpnp_vib_config {
+ u16 drive_mV;
+ u8 active_low;
+ enum qpnp_vib_en_mode enable_mode;
+};
+#if defined(CONFIG_QPNP_VIBRATOR)
+
+int qpnp_vibrator_config(struct qpnp_vib_config *vib_config);
+#else
+
+static inline int qpnp_vibrator_config(struct qpnp_vib_config *vib_config)
+{
+ return -ENODEV;
+}
+#endif
+
+#endif /* __QPNP_VIBRATOR_H__ */