mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-09-21 03:43:03 +00:00
platform: msm: Add QPNP PMIC vibrator driver
The vibrator is connected on the VIB_DRV_N line of the QPNP PMIC. The vibrator can be controlled manually or by the DTEST lines. It uses the timed-output framework to interface with the userspace. Change-Id: Id45300f4fb98d1cef07ee269b67c28eb9432c92a Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org> Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
This commit is contained in:
parent
a84ecee1da
commit
a8950861fb
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@ -0,0 +1,25 @@
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QPNP Vibrator
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QPNP (Qualcomm Plug N Play) vibrator is a peripheral on
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Qualcomm PMICs. The PMIC is connected to Host processor
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via SPMI bus.
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Required Properties:
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- status: default status is set to "disabled. Must be "okay"
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- compatible: must be "qcom,qpnp-vibrator"
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- label: name which describes the device
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- reg: address of device
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Optional Properties:
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- qcom,vib-timeout-ms: timeout of vibrator, in ms. Default 15000 ms
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- qcom,vib-vtg-level-mV: voltage level, in mV. Default 3100 mV
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Example:
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qcom,vib@c000 {
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status = "okay";
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compatible = "qcom,qpnp-vibrator";
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reg = <0xc000 0x100>;
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label = "vibrator";
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qcom,vib-timeout-ms = <15000>;
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qcom,vib-vtg-level-mV = <3100>;
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};
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@ -73,6 +73,15 @@ config QPNP_CLKDIV
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PMIC. These clocks are typically wired through alternate functions
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on gpio pins.
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config QPNP_VIBRATOR
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tristate "Vibrator support for QPNP PMIC"
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depends on OF_SPMI
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help
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This option enables device driver support for the vibrator
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on the Qualcomm's QPNP PMICs. The vibrator is connected on the
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VIB_DRV_N line and can be controlled manually or by the DTEST lines.
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It uses the android timed-output framework.
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config IPA
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tristate "IPA support"
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depends on SPS
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@ -7,5 +7,6 @@ obj-$(CONFIG_IPA) += ipa/
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obj-$(CONFIG_SPS) += sps/
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obj-$(CONFIG_QPNP_PWM) += qpnp-pwm.o
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obj-$(CONFIG_QPNP_POWER_ON) += qpnp-power-on.o
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obj-$(CONFIG_QPNP_VIBRATOR) += qpnp-vibrator.o
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obj-$(CONFIG_QPNP_CLKDIV) += qpnp-clkdiv.o
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obj-$(CONFIG_MSM_AVTIMER) += avtimer.o
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343
drivers/platform/msm/qpnp-vibrator.c
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343
drivers/platform/msm/qpnp-vibrator.c
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/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
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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 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/hrtimer.h>
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#include <linux/of_device.h>
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#include <linux/spmi.h>
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#include <linux/qpnp/vibrator.h>
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#include "../../staging/android/timed_output.h"
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#define QPNP_VIB_VTG_CTL(base) (base + 0x41)
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#define QPNP_VIB_EN_CTL(base) (base + 0x46)
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#define QPNP_VIB_MAX_LEVEL 31
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#define QPNP_VIB_MIN_LEVEL 12
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#define QPNP_VIB_DEFAULT_TIMEOUT 15000
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#define QPNP_VIB_DEFAULT_VTG_LVL 3100
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#define QPNP_VIB_EN BIT(7)
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#define QPNP_VIB_VTG_SET_MASK 0x1F
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#define QPNP_VIB_LOGIC_SHIFT 4
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struct qpnp_vib {
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struct spmi_device *spmi;
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struct hrtimer vib_timer;
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struct timed_output_dev timed_dev;
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struct work_struct work;
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u8 reg_vtg_ctl;
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u8 reg_en_ctl;
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u16 base;
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int state;
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int vtg_level;
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int timeout;
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struct mutex lock;
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};
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static struct qpnp_vib *vib_dev;
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static int qpnp_vib_read_u8(struct qpnp_vib *vib, u8 *data, u16 reg)
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{
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int rc;
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rc = spmi_ext_register_readl(vib->spmi->ctrl, vib->spmi->sid,
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reg, data, 1);
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if (rc < 0)
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dev_err(&vib->spmi->dev,
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"Error reading address: %X - ret %X\n", reg, rc);
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return rc;
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}
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static int qpnp_vib_write_u8(struct qpnp_vib *vib, u8 *data, u16 reg)
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{
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int rc;
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rc = spmi_ext_register_writel(vib->spmi->ctrl, vib->spmi->sid,
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reg, data, 1);
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if (rc < 0)
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dev_err(&vib->spmi->dev,
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"Error writing address: %X - ret %X\n", reg, rc);
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return rc;
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}
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int qpnp_vibrator_config(struct qpnp_vib_config *vib_cfg)
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{
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u8 reg = 0;
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int rc = -EINVAL, level;
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if (vib_dev == NULL) {
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pr_err("%s: vib_dev is NULL\n", __func__);
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return -ENODEV;
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}
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level = vib_cfg->drive_mV / 100;
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if (level) {
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if ((level < QPNP_VIB_MIN_LEVEL) ||
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(level > QPNP_VIB_MAX_LEVEL)) {
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dev_err(&vib_dev->spmi->dev, "Invalid voltage level\n");
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return -EINVAL;
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}
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} else {
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dev_err(&vib_dev->spmi->dev, "Voltage level not specified\n");
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return -EINVAL;
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}
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/* Configure the VTG CTL regiser */
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reg = vib_dev->reg_vtg_ctl;
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reg &= ~QPNP_VIB_VTG_SET_MASK;
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reg |= (level & QPNP_VIB_VTG_SET_MASK);
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rc = qpnp_vib_write_u8(vib_dev, ®, QPNP_VIB_VTG_CTL(vib_dev->base));
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if (rc)
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return rc;
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vib_dev->reg_vtg_ctl = reg;
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/* Configure the VIB ENABLE regiser */
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reg = vib_dev->reg_en_ctl;
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reg |= (!!vib_cfg->active_low) << QPNP_VIB_LOGIC_SHIFT;
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if (vib_cfg->enable_mode == QPNP_VIB_MANUAL)
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reg |= QPNP_VIB_EN;
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else
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reg |= BIT(vib_cfg->enable_mode - 1);
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rc = qpnp_vib_write_u8(vib_dev, ®, QPNP_VIB_EN_CTL(vib_dev->base));
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if (rc < 0)
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return rc;
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vib_dev->reg_en_ctl = reg;
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return rc;
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}
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EXPORT_SYMBOL(qpnp_vibrator_config);
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static int qpnp_vib_set(struct qpnp_vib *vib, int on)
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{
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int rc;
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u8 val;
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if (on) {
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val = vib->reg_vtg_ctl;
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val &= ~QPNP_VIB_VTG_SET_MASK;
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val |= (vib->vtg_level & QPNP_VIB_VTG_SET_MASK);
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rc = qpnp_vib_write_u8(vib, &val, QPNP_VIB_VTG_CTL(vib->base));
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if (rc < 0)
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return rc;
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vib->reg_vtg_ctl = val;
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val = vib->reg_en_ctl;
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val |= QPNP_VIB_EN;
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rc = qpnp_vib_write_u8(vib, &val, QPNP_VIB_EN_CTL(vib->base));
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if (rc < 0)
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return rc;
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vib->reg_en_ctl = val;
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} else {
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val = vib->reg_en_ctl;
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val &= ~QPNP_VIB_EN;
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rc = qpnp_vib_write_u8(vib, &val, QPNP_VIB_EN_CTL(vib->base));
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if (rc < 0)
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return rc;
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vib->reg_en_ctl = val;
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}
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return rc;
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}
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static void qpnp_vib_enable(struct timed_output_dev *dev, int value)
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{
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struct qpnp_vib *vib = container_of(dev, struct qpnp_vib,
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timed_dev);
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mutex_lock(&vib->lock);
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hrtimer_cancel(&vib->vib_timer);
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if (value == 0)
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vib->state = 0;
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else {
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value = (value > vib->timeout ?
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vib->timeout : value);
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vib->state = 1;
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hrtimer_start(&vib->vib_timer,
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ktime_set(value / 1000, (value % 1000) * 1000000),
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HRTIMER_MODE_REL);
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}
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mutex_unlock(&vib->lock);
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schedule_work(&vib->work);
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}
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static void qpnp_vib_update(struct work_struct *work)
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{
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struct qpnp_vib *vib = container_of(work, struct qpnp_vib,
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work);
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qpnp_vib_set(vib, vib->state);
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}
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static int qpnp_vib_get_time(struct timed_output_dev *dev)
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{
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struct qpnp_vib *vib = container_of(dev, struct qpnp_vib,
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timed_dev);
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if (hrtimer_active(&vib->vib_timer)) {
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ktime_t r = hrtimer_get_remaining(&vib->vib_timer);
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return (int)ktime_to_us(r);
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} else
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return 0;
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}
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static enum hrtimer_restart qpnp_vib_timer_func(struct hrtimer *timer)
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{
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struct qpnp_vib *vib = container_of(timer, struct qpnp_vib,
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vib_timer);
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vib->state = 0;
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schedule_work(&vib->work);
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return HRTIMER_NORESTART;
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}
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#ifdef CONFIG_PM
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static int qpnp_vibrator_suspend(struct device *dev)
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{
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struct qpnp_vib *vib = dev_get_drvdata(dev);
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hrtimer_cancel(&vib->vib_timer);
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cancel_work_sync(&vib->work);
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/* turn-off vibrator */
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qpnp_vib_set(vib, 0);
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return 0;
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}
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#endif
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static SIMPLE_DEV_PM_OPS(qpnp_vibrator_pm_ops, qpnp_vibrator_suspend, NULL);
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static int qpnp_vibrator_probe(struct spmi_device *spmi)
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{
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struct qpnp_vib *vib;
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struct resource *vib_resource;
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int rc;
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u8 val;
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u32 temp_val;
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vib = devm_kzalloc(&spmi->dev, sizeof(*vib), GFP_KERNEL);
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if (!vib)
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return -ENOMEM;
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vib->spmi = spmi;
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vib->timeout = QPNP_VIB_DEFAULT_TIMEOUT;
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rc = of_property_read_u32(spmi->dev.of_node,
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"qcom,vib-timeout-ms", &temp_val);
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if (!rc) {
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vib->timeout = temp_val;
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} else if (rc != EINVAL) {
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dev_err(&spmi->dev, "Unable to read vib timeout\n");
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return rc;
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}
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vib->vtg_level = QPNP_VIB_DEFAULT_VTG_LVL;
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rc = of_property_read_u32(spmi->dev.of_node,
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"qcom,vib-vtg-level-mV", &temp_val);
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if (!rc) {
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vib->vtg_level = temp_val;
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} else if (rc != -EINVAL) {
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dev_err(&spmi->dev, "Unable to read vtg level\n");
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return rc;
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}
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vib->vtg_level /= 100;
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vib_resource = spmi_get_resource(spmi, 0, IORESOURCE_MEM, 0);
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if (!vib_resource) {
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dev_err(&spmi->dev, "Unable to get vibrator base address\n");
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return -EINVAL;
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}
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vib->base = vib_resource->start;
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/* save the control registers values */
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rc = qpnp_vib_read_u8(vib, &val, QPNP_VIB_VTG_CTL(vib->base));
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if (rc < 0)
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return rc;
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vib->reg_vtg_ctl = val;
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rc = qpnp_vib_read_u8(vib, &val, QPNP_VIB_EN_CTL(vib->base));
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if (rc < 0)
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return rc;
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vib->reg_en_ctl = val;
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mutex_init(&vib->lock);
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INIT_WORK(&vib->work, qpnp_vib_update);
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hrtimer_init(&vib->vib_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
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vib->vib_timer.function = qpnp_vib_timer_func;
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vib->timed_dev.name = "vibrator";
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vib->timed_dev.get_time = qpnp_vib_get_time;
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vib->timed_dev.enable = qpnp_vib_enable;
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dev_set_drvdata(&spmi->dev, vib);
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rc = timed_output_dev_register(&vib->timed_dev);
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if (rc < 0)
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return rc;
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vib_dev = vib;
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return rc;
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}
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static int qpnp_vibrator_remove(struct spmi_device *spmi)
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{
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struct qpnp_vib *vib = dev_get_drvdata(&spmi->dev);
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cancel_work_sync(&vib->work);
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hrtimer_cancel(&vib->vib_timer);
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timed_output_dev_unregister(&vib->timed_dev);
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mutex_destroy(&vib->lock);
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return 0;
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}
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static struct of_device_id spmi_match_table[] = {
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{ .compatible = "qcom,qpnp-vibrator",
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},
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{}
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};
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static struct spmi_driver qpnp_vibrator_driver = {
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.driver = {
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.name = "qcom,qpnp-vibrator",
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.of_match_table = spmi_match_table,
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.pm = &qpnp_vibrator_pm_ops,
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},
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.probe = qpnp_vibrator_probe,
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.remove = qpnp_vibrator_remove,
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};
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static int __init qpnp_vibrator_init(void)
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{
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return spmi_driver_register(&qpnp_vibrator_driver);
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}
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module_init(qpnp_vibrator_init);
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static void __exit qpnp_vibrator_exit(void)
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{
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return spmi_driver_unregister(&qpnp_vibrator_driver);
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}
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module_exit(qpnp_vibrator_exit);
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MODULE_DESCRIPTION("qpnp vibrator driver");
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MODULE_LICENSE("GPL v2");
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39
include/linux/qpnp/vibrator.h
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39
include/linux/qpnp/vibrator.h
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/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
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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 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __QPNP_VIBRATOR_H__
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#define __QPNP_VIBRATOR_H__
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enum qpnp_vib_en_mode {
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QPNP_VIB_MANUAL,
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QPNP_VIB_DTEST1,
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QPNP_VIB_DTEST2,
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QPNP_VIB_DTEST3,
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};
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struct qpnp_vib_config {
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u16 drive_mV;
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u8 active_low;
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enum qpnp_vib_en_mode enable_mode;
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};
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#if defined(CONFIG_QPNP_VIBRATOR)
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int qpnp_vibrator_config(struct qpnp_vib_config *vib_config);
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#else
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static inline int qpnp_vibrator_config(struct qpnp_vib_config *vib_config)
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{
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return -ENODEV;
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}
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#endif
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#endif /* __QPNP_VIBRATOR_H__ */
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