171 lines
3.9 KiB
C
Executable File
171 lines
3.9 KiB
C
Executable File
/*
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* haptic motor driver for max77804k - max77673_haptic.c
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*
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* Copyright (C) 2011 ByungChang Cha <bc.cha@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/hrtimer.h>
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#include <linux/pwm.h>
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#include <linux/platform_device.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/clk.h>
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#include <linux/i2c.h>
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#include <linux/regulator/consumer.h>
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#include <linux/mfd/max77804k.h>
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#include <linux/mfd/max77804k-private.h>
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struct max77804k_haptic_data {
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struct max77804k_dev *max77804k;
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struct i2c_client *i2c;
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struct i2c_client *pmic_i2c;
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struct max77804k_haptic_platform_data *pdata;
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spinlock_t lock;
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bool running;
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};
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struct max77804k_haptic_data *g_hap_data;
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static void max77804k_haptic_i2c(struct max77804k_haptic_data *hap_data, bool en)
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{
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int ret;
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u8 value = hap_data->pdata->reg2;
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u8 lscnfg_val = 0x00;
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pr_debug("[VIB] %s %d\n", __func__, en);
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if (en) {
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value |= MOTOR_EN;
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lscnfg_val = 0x80;
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}
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ret = max77804k_update_reg(hap_data->pmic_i2c, MAX77804K_PMIC_REG_LSCNFG,
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lscnfg_val, 0x80);
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if (ret)
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pr_err("[VIB] i2c update error %d\n", ret);
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ret = max77804k_write_reg(hap_data->i2c,
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MAX77804K_HAPTIC_REG_CONFIG2, value);
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if (ret)
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pr_err("[VIB] i2c write error %d\n", ret);
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}
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#ifdef CONFIG_VIBETONZ
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void max77804k_vibtonz_en(bool en)
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{
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if (g_hap_data == NULL) {
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printk(KERN_ERR "[VIB] the motor is not ready!!!");
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return ;
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}
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if (en) {
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if (g_hap_data->running)
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return;
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max77804k_haptic_i2c(g_hap_data, true);
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g_hap_data->running = true;
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} else {
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if (!g_hap_data->running)
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return;
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max77804k_haptic_i2c(g_hap_data, false);
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g_hap_data->running = false;
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}
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}
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EXPORT_SYMBOL(max77804k_vibtonz_en);
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#endif
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static int __devinit max77804k_haptic_probe(struct platform_device *pdev)
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{
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int error = 0;
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struct max77804k_dev *max77804k = dev_get_drvdata(pdev->dev.parent);
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struct max77804k_platform_data *max77804k_pdata
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= dev_get_platdata(max77804k->dev);
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#ifdef CONFIG_VIBETONZ
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struct max77804k_haptic_platform_data *pdata
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= max77804k_pdata->haptic_data;
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#endif
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struct max77804k_haptic_data *hap_data;
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pr_err("[VIB] ++ %s\n", __func__);
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if (pdata == NULL) {
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pr_err("%s: no pdata\n", __func__);
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return -ENODEV;
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}
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hap_data = kzalloc(sizeof(struct max77804k_haptic_data), GFP_KERNEL);
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if (!hap_data)
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return -ENOMEM;
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platform_set_drvdata(pdev, hap_data);
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g_hap_data = hap_data;
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hap_data->max77804k = max77804k;
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hap_data->i2c = max77804k->haptic;
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hap_data->pmic_i2c = max77804k->i2c;
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pdata->reg2 = MOTOR_LRA | EXT_PWM | DIVIDER_128;
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hap_data->pdata = pdata;
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spin_lock_init(&(hap_data->lock));
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pr_err("[VIB] -- %s\n", __func__);
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return error;
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}
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static int __devexit max77804k_haptic_remove(struct platform_device *pdev)
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{
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struct max77804k_haptic_data *data = platform_get_drvdata(pdev);
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kfree(data);
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g_hap_data = NULL;
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return 0;
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}
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static int max77804k_haptic_suspend(struct platform_device *pdev,
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pm_message_t state)
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{
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return 0;
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}
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static int max77804k_haptic_resume(struct platform_device *pdev)
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{
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return 0;
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}
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static struct platform_driver max77804k_haptic_driver = {
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.probe = max77804k_haptic_probe,
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.remove = max77804k_haptic_remove,
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.suspend = max77804k_haptic_suspend,
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.resume = max77804k_haptic_resume,
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.driver = {
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.name = "max77804k-haptic",
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.owner = THIS_MODULE,
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},
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};
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static int __init max77804k_haptic_init(void)
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{
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pr_debug("[VIB] %s\n", __func__);
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return platform_driver_register(&max77804k_haptic_driver);
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}
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module_init(max77804k_haptic_init);
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static void __exit max77804k_haptic_exit(void)
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{
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platform_driver_unregister(&max77804k_haptic_driver);
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}
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module_exit(max77804k_haptic_exit);
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MODULE_AUTHOR("ByungChang Cha <bc.cha@samsung.com>");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("MAX77804K haptic driver");
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