Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/drivers/input/misc/pmic8058-vib-memless.c b/drivers/input/misc/pmic8058-vib-memless.c
new file mode 100644
index 0000000..ba05400
--- /dev/null
+++ b/drivers/input/misc/pmic8058-vib-memless.c
@@ -0,0 +1,282 @@
+/* Copyright (c) 2010, Code Aurora Forum. 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/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/pmic8058-vibrator.h>
+#include <linux/mfd/pmic8058.h>
+#include <linux/pm.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+
+#define VIB_DRV 0x4A
+
+#define VIB_DRV_SEL_MASK 0xf8
+#define VIB_DRV_SEL_SHIFT 0x03
+#define VIB_DRV_EN_MANUAL_MASK 0xfc
+
+#define VIB_MAX_LEVEL_mV (3100)
+#define VIB_MIN_LEVEL_mV (1200)
+#define VIB_MAX_LEVELS (VIB_MAX_LEVEL_mV - VIB_MIN_LEVEL_mV)
+
+#define MAX_FF_SPEED 0xff
+
+struct pmic8058_vib {
+ struct input_dev *info;
+ spinlock_t lock;
+ struct work_struct work;
+
+ bool enabled;
+ int speed;
+ struct device *dev;
+ struct pmic8058_vibrator_pdata *pdata;
+ int state;
+ int level;
+ u8 reg_vib_drv;
+
+ struct pm8058_chip *pm_chip;
+};
+
+/* REVISIT: just for debugging, will be removed in final working version */
+static void __dump_vib_regs(struct pmic8058_vib *vib, char *msg)
+{
+ u8 temp;
+
+ dev_dbg(vib->dev, "%s\n", msg);
+
+ pm8058_read(vib->pm_chip, VIB_DRV, &temp, 1);
+ dev_dbg(vib->dev, "VIB_DRV - %X\n", temp);
+}
+
+static int pmic8058_vib_read_u8(struct pmic8058_vib *vib,
+ u8 *data, u16 reg)
+{
+ int rc;
+
+ rc = pm8058_read(vib->pm_chip, reg, data, 1);
+ if (rc < 0)
+ dev_warn(vib->dev, "Error reading pmic8058: %X - ret %X\n",
+ reg, rc);
+
+ return rc;
+}
+
+static int pmic8058_vib_write_u8(struct pmic8058_vib *vib,
+ u8 data, u16 reg)
+{
+ int rc;
+
+ rc = pm8058_write(vib->pm_chip, reg, &data, 1);
+ if (rc < 0)
+ dev_warn(vib->dev, "Error writing pmic8058: %X - ret %X\n",
+ reg, rc);
+ return rc;
+}
+
+static int pmic8058_vib_set(struct pmic8058_vib *vib, int on)
+{
+ int rc;
+ u8 val;
+
+ if (on) {
+ val = vib->reg_vib_drv;
+ val |= ((vib->level << VIB_DRV_SEL_SHIFT) & VIB_DRV_SEL_MASK);
+ rc = pmic8058_vib_write_u8(vib, val, VIB_DRV);
+ if (rc < 0)
+ return rc;
+ vib->reg_vib_drv = val;
+ vib->enabled = 1;
+
+ } else {
+ val = vib->reg_vib_drv;
+ val &= ~VIB_DRV_SEL_MASK;
+ rc = pmic8058_vib_write_u8(vib, val, VIB_DRV);
+ if (rc < 0)
+ return rc;
+ vib->reg_vib_drv = val;
+ vib->enabled = 0;
+ }
+ __dump_vib_regs(vib, "vib_set_end");
+
+ return rc;
+}
+
+static void pmic8058_work_handler(struct work_struct *work)
+{
+ u8 val;
+ int rc;
+ struct pmic8058_vib *info;
+
+ info = container_of(work, struct pmic8058_vib, work);
+
+ rc = pmic8058_vib_read_u8(info, &val, VIB_DRV);
+ if (rc < 0)
+ return;
+
+ /*
+ * Vibrator support voltage ranges from 1.2 to 3.1V, so
+ * scale the FF speed to these range.
+ */
+ if (info->speed) {
+ info->state = 1;
+ info->level = ((VIB_MAX_LEVELS * info->speed) / MAX_FF_SPEED) +
+ VIB_MIN_LEVEL_mV;
+ info->level /= 100;
+ } else {
+ info->state = 0;
+ info->level = VIB_MIN_LEVEL_mV / 100;
+ }
+ pmic8058_vib_set(info, info->state);
+}
+
+static int pmic8058_vib_play_effect(struct input_dev *dev, void *data,
+ struct ff_effect *effect)
+{
+ struct pmic8058_vib *info = input_get_drvdata(dev);
+
+ info->speed = effect->u.rumble.strong_magnitude >> 8;
+ if (!info->speed)
+ info->speed = effect->u.rumble.weak_magnitude >> 9;
+ schedule_work(&info->work);
+ return 0;
+}
+
+static int __devinit pmic8058_vib_probe(struct platform_device *pdev)
+
+{
+ struct pmic8058_vibrator_pdata *pdata = pdev->dev.platform_data;
+ struct pmic8058_vib *vib;
+ u8 val;
+ int rc;
+
+ struct pm8058_chip *pm_chip;
+
+ pm_chip = dev_get_drvdata(pdev->parent.dev);
+ if (pm_chip == NULL) {
+ dev_err(&pdev->dev, "no parent data passed in\n");
+ return -EFAULT;
+ }
+
+ if (!pdata)
+ return -EINVAL;
+
+ if (pdata->level_mV < VIB_MIN_LEVEL_mV ||
+ pdata->level_mV > VIB_MAX_LEVEL_mV)
+ return -EINVAL;
+
+ vib = kzalloc(sizeof(*vib), GFP_KERNEL);
+ if (!vib)
+ return -ENOMEM;
+
+ vib->pm_chip = pm_chip;
+ vib->enabled = 0;
+ vib->pdata = pdata;
+ vib->level = pdata->level_mV / 100;
+ vib->dev = &pdev->dev;
+
+ spin_lock_init(&vib->lock);
+ INIT_WORK(&vib->work, pmic8058_work_handler);
+
+ vib->info = input_allocate_device();
+
+ if (vib->info == NULL) {
+ dev_err(&pdev->dev, "couldn't allocate input device\n");
+ return -ENOMEM;
+ }
+
+ input_set_drvdata(vib->info, vib);
+
+ vib->info->name = "pmic8058:vibrator";
+ vib->info->id.version = 1;
+ vib->info->dev.parent = pdev->dev.parent;
+
+ __set_bit(FF_RUMBLE, vib->info->ffbit);
+ __dump_vib_regs(vib, "boot_vib_default");
+
+ /* operate in manual mode */
+ rc = pmic8058_vib_read_u8(vib, &val, VIB_DRV);
+ if (rc < 0)
+ goto err_read_vib;
+ val &= ~VIB_DRV_EN_MANUAL_MASK;
+ rc = pmic8058_vib_write_u8(vib, val, VIB_DRV);
+ if (rc < 0)
+ goto err_read_vib;
+
+ vib->reg_vib_drv = val;
+
+ rc = input_ff_create_memless(vib->info, NULL, pmic8058_vib_play_effect);
+ if (rc < 0) {
+ dev_dbg(&pdev->dev, "couldn't register vibrator to FF\n");
+ goto create_memless_err;
+ }
+
+ platform_set_drvdata(pdev, vib);
+
+ rc = input_register_device(vib->info);
+ if (rc < 0) {
+ dev_dbg(&pdev->dev, "couldn't register input device\n");
+ goto reg_err;
+ }
+
+ return 0;
+
+reg_err:
+ input_ff_destroy(vib->info);
+create_memless_err:
+ input_free_device(vib->info);
+err_read_vib:
+ kfree(vib);
+ return rc;
+}
+
+static int __devexit pmic8058_vib_remove(struct platform_device *pdev)
+{
+ struct pmic8058_vib *vib = platform_get_drvdata(pdev);
+
+ cancel_work_sync(&vib->work);
+ if (vib->enabled)
+ pmic8058_vib_set(vib, 0);
+
+ input_unregister_device(vib->info);
+ kfree(vib);
+
+ return 0;
+}
+
+static struct platform_driver pmic8058_vib_driver = {
+ .probe = pmic8058_vib_probe,
+ .remove = __devexit_p(pmic8058_vib_remove),
+ .driver = {
+ .name = "pm8058-vib",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init pmic8058_vib_init(void)
+{
+ return platform_driver_register(&pmic8058_vib_driver);
+}
+module_init(pmic8058_vib_init);
+
+static void __exit pmic8058_vib_exit(void)
+{
+ platform_driver_unregister(&pmic8058_vib_driver);
+}
+module_exit(pmic8058_vib_exit);
+
+MODULE_ALIAS("platform:pmic8058_vib");
+MODULE_DESCRIPTION("PMIC8058 vibrator driver memless framework");
+MODULE_LICENSE("GPL v2");