leds: vibrator: Add snapshot of vibrator driver
Add snapshot of leds-qpnp-vibrator.c as of msm-4.9 commit d622c74d02c2 ("leds: qpnp-vibrator: Add vibrator set state function"). Change-Id: Iaea20f0b0a80c937c870dc7336a1626ef7295934 Signed-off-by: Shilpa Suresh <sbsure@codeaurora.org>
This commit is contained in:
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79b29ad560
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2f4c84c112
@ -799,6 +799,16 @@ config LEDS_QPNP_VIBRATOR_LDO
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peripheral found on Qualcomm Technologies, Inc. QPNP PMICs.
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The vibrator-ldo peripheral is capable of driving ERM vibrators.
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config LEDS_QPNP_VIBRATOR
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tristate "Vibrator support for QPNP PMIC"
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depends on LEDS_CLASS && MFD_SPMI_PMIC
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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 technologies Inc's QPNP PMICs. The vibrator
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is connected on the VIB_DRV_N line and can be controlled
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manually or by the DTEST lines.It uses the android timed-output
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framework.
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comment "LED Triggers"
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source "drivers/leds/trigger/Kconfig"
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@ -82,6 +82,7 @@ obj-$(CONFIG_LEDS_LM3601X) += leds-lm3601x.o
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obj-$(CONFIG_LEDS_QTI_TRI_LED) += leds-qti-tri-led.o
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obj-$(CONFIG_LEDS_QPNP_FLASH_V2) += leds-qpnp-flash-v2.o leds-qpnp-flash-common.o
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obj-$(CONFIG_LEDS_QPNP_VIBRATOR_LDO) += leds-qpnp-vibrator-ldo.o
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obj-$(CONFIG_LEDS_QPNP_VIBRATOR) += leds-qpnp-vibrator.o
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# LED SPI Drivers
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obj-$(CONFIG_LEDS_CR0014114) += leds-cr0014114.o
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527
drivers/leds/leds-qpnp-vibrator.c
Normal file
527
drivers/leds/leds-qpnp-vibrator.c
Normal file
@ -0,0 +1,527 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2013-2015, 2018-2019, 2021, The Linux Foundation. All rights reserved.
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*/
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#include <linux/module.h>
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#include <linux/regmap.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/of_irq.h>
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#include <linux/platform_device.h>
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#include <linux/err.h>
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#include <linux/leds.h>
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#include <linux/device.h>
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#include <linux/pwm.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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enum qpnp_vib_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_pwm_info {
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struct pwm_device *pwm_dev;
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u32 pwm_channel;
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u32 duty_us;
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u32 period_us;
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};
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struct qpnp_vib {
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struct platform_device *pdev;
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struct regmap *regmap;
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struct hrtimer vib_timer;
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struct led_classdev cdev;
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struct work_struct work;
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struct qpnp_pwm_info pwm_info;
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enum qpnp_vib_mode mode;
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u8 reg_vtg_ctl;
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u8 reg_en_ctl;
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u8 active_low;
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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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u32 vib_play_ms;
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struct mutex lock;
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};
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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 = regmap_read(vib->regmap, reg, (unsigned int *)data);
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if (rc < 0)
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dev_err(&vib->pdev->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 = regmap_write(vib->regmap, reg, (unsigned int)*data);
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if (rc < 0)
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dev_err(&vib->pdev->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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static int qpnp_vibrator_config(struct qpnp_vib *vib)
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{
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u8 reg = 0;
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int rc;
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/* Configure the VTG CTL regiser */
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rc = qpnp_vib_read_u8(vib, ®, QPNP_VIB_VTG_CTL(vib->base));
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if (rc < 0)
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return rc;
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reg &= ~QPNP_VIB_VTG_SET_MASK;
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reg |= (vib->vtg_level & QPNP_VIB_VTG_SET_MASK);
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rc = qpnp_vib_write_u8(vib, ®, QPNP_VIB_VTG_CTL(vib->base));
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if (rc)
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return rc;
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vib->reg_vtg_ctl = reg;
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/* Configure the VIB ENABLE regiser */
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rc = qpnp_vib_read_u8(vib, ®, QPNP_VIB_EN_CTL(vib->base));
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if (rc < 0)
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return rc;
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reg |= (!!vib->active_low) << QPNP_VIB_LOGIC_SHIFT;
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if (vib->mode != QPNP_VIB_MANUAL) {
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vib->pwm_info.pwm_dev = pwm_request(vib->pwm_info.pwm_channel,
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"qpnp-vib");
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if (IS_ERR_OR_NULL(vib->pwm_info.pwm_dev)) {
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dev_err(&vib->pdev->dev, "vib pwm request failed\n");
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return -ENODEV;
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}
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rc = pwm_config(vib->pwm_info.pwm_dev, vib->pwm_info.duty_us,
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vib->pwm_info.period_us);
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if (rc < 0) {
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dev_err(&vib->pdev->dev, "vib pwm config failed\n");
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pwm_free(vib->pwm_info.pwm_dev);
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return -ENODEV;
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}
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reg |= BIT(vib->mode - 1);
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}
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rc = qpnp_vib_write_u8(vib, ®, 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 = reg;
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return rc;
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}
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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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if (vib->mode != QPNP_VIB_MANUAL) {
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pwm_enable(vib->pwm_info.pwm_dev);
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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,
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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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} else {
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if (vib->mode != QPNP_VIB_MANUAL) {
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pwm_disable(vib->pwm_info.pwm_dev);
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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,
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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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}
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return 0;
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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 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_vib_parse_dt(struct qpnp_vib *vib)
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{
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struct platform_device *pdev = vib->pdev;
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struct device_node *node = pdev->dev.of_node;
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const char *mode;
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u32 temp_val;
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int rc;
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vib->timeout = QPNP_VIB_DEFAULT_TIMEOUT;
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rc = of_property_read_u32(node, "reg", &temp_val);
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if (rc < 0) {
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dev_err(&pdev->dev,
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"Couldn't find reg in node = %s rc = %d\n",
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node->full_name, rc);
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return rc;
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}
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vib->base = temp_val;
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rc = of_property_read_u32(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(&pdev->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(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(&pdev->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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if (vib->vtg_level < QPNP_VIB_MIN_LEVEL)
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vib->vtg_level = QPNP_VIB_MIN_LEVEL;
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else if (vib->vtg_level > QPNP_VIB_MAX_LEVEL)
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vib->vtg_level = QPNP_VIB_MAX_LEVEL;
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vib->mode = QPNP_VIB_MANUAL;
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rc = of_property_read_string(node, "qcom,mode", &mode);
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if (!rc) {
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if (strcmp(mode, "manual") == 0) {
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vib->mode = QPNP_VIB_MANUAL;
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} else if (strcmp(mode, "dtest1") == 0) {
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vib->mode = QPNP_VIB_DTEST1;
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} else if (strcmp(mode, "dtest2") == 0) {
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vib->mode = QPNP_VIB_DTEST2;
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} else if (strcmp(mode, "dtest3") == 0) {
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vib->mode = QPNP_VIB_DTEST3;
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} else {
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dev_err(&pdev->dev, "Invalid mode\n");
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return -EINVAL;
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}
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} else if (rc != -EINVAL) {
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dev_err(&pdev->dev, "Unable to read mode\n");
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return rc;
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}
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if (vib->mode != QPNP_VIB_MANUAL) {
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rc = of_property_read_u32(node,
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"qcom,pwm-channel", &temp_val);
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if (!rc)
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vib->pwm_info.pwm_channel = temp_val;
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else
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return rc;
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rc = of_property_read_u32(node,
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"qcom,period-us", &temp_val);
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if (!rc)
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vib->pwm_info.period_us = temp_val;
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else
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return rc;
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rc = of_property_read_u32(node,
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"qcom,duty-us", &temp_val);
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if (!rc)
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vib->pwm_info.duty_us = temp_val;
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else
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return rc;
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}
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vib->active_low = of_property_read_bool(node,
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"qcom,active-low");
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return 0;
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}
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static ssize_t qpnp_vib_get_state(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct led_classdev *cdev = dev_get_drvdata(dev);
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struct qpnp_vib *chip = container_of(cdev, struct qpnp_vib, cdev);
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return scnprintf(buf, PAGE_SIZE, "%d\n", !!chip->reg_en_ctl);
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}
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static ssize_t qpnp_vib_set_state(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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/* At present, nothing to do with setting state */
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return count;
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}
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static ssize_t qpnp_vib_get_duration(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct led_classdev *cdev = dev_get_drvdata(dev);
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struct qpnp_vib *vib = container_of(cdev, struct qpnp_vib, cdev);
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ktime_t time_rem;
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s64 time_us = 0;
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if (hrtimer_active(&vib->vib_timer)) {
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time_rem = hrtimer_get_remaining(&vib->vib_timer);
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time_us = ktime_to_us(time_rem);
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}
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return scnprintf(buf, PAGE_SIZE, "%lld\n", div_s64(time_us, 1000));
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}
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static ssize_t qpnp_vib_set_duration(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct led_classdev *cdev = dev_get_drvdata(dev);
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struct qpnp_vib *vib = container_of(cdev, struct qpnp_vib, cdev);
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u32 value;
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int rc;
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rc = kstrtouint(buf, 0, &value);
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if (rc < 0)
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return rc;
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/* setting 0 on duration is NOP for now */
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if (value <= 0)
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return count;
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if (value > vib->timeout)
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value = vib->timeout;
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mutex_lock(&vib->lock);
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vib->vib_play_ms = value;
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mutex_unlock(&vib->lock);
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return count;
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}
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static ssize_t qpnp_vib_get_activate(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct led_classdev *cdev = dev_get_drvdata(dev);
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struct qpnp_vib *vib = container_of(cdev, struct qpnp_vib, cdev);
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return scnprintf(buf, PAGE_SIZE, "%d\n", vib->state);
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}
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static ssize_t qpnp_vib_set_activate(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct led_classdev *cdev = dev_get_drvdata(dev);
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struct qpnp_vib *vib = container_of(cdev, struct qpnp_vib, cdev);
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u32 value;
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int rc;
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rc = kstrtouint(buf, 0, &value);
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if (rc < 0)
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return rc;
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if (value != 0 && value != 1)
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return count;
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vib->state = value;
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pr_debug("state = %d, time = %ums\n", vib->state,
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vib->vib_play_ms);
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mutex_lock(&vib->lock);
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if (vib->state) {
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hrtimer_cancel(&vib->vib_timer);
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hrtimer_start(&vib->vib_timer,
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ktime_set(vib->vib_play_ms / 1000,
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(vib->vib_play_ms % 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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return count;
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}
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static struct device_attribute qpnp_vib_attrs[] = {
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__ATTR(state, 0664, qpnp_vib_get_state, qpnp_vib_set_state),
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__ATTR(duration, 0664, qpnp_vib_get_duration, qpnp_vib_set_duration),
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__ATTR(activate, 0664, qpnp_vib_get_activate, qpnp_vib_set_activate),
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};
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/* Dummy functions for brightness */
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static
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enum led_brightness qpnp_brightness_get(struct led_classdev *cdev)
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{
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return 0;
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}
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static void qpnp_brightness_set(struct led_classdev *cdev,
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||||
enum led_brightness level)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
static int qpnp_vibrator_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct qpnp_vib *vib;
|
||||
int rc;
|
||||
int i;
|
||||
|
||||
vib = devm_kzalloc(&pdev->dev, sizeof(*vib), GFP_KERNEL);
|
||||
if (!vib)
|
||||
return -ENOMEM;
|
||||
|
||||
vib->regmap = dev_get_regmap(pdev->dev.parent, NULL);
|
||||
if (!vib->regmap) {
|
||||
dev_err(&pdev->dev, "Couldn't get parent's regmap\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
vib->pdev = pdev;
|
||||
|
||||
rc = qpnp_vib_parse_dt(vib);
|
||||
if (rc) {
|
||||
dev_err(&pdev->dev, "DT parsing failed\n");
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = qpnp_vibrator_config(vib);
|
||||
if (rc) {
|
||||
dev_err(&pdev->dev, "vib config failed\n");
|
||||
return rc;
|
||||
}
|
||||
|
||||
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->cdev.name = "vibrator";
|
||||
vib->cdev.brightness_get = qpnp_brightness_get;
|
||||
vib->cdev.brightness_set = qpnp_brightness_set;
|
||||
vib->cdev.max_brightness = 100;
|
||||
rc = devm_led_classdev_register(&pdev->dev, &vib->cdev);
|
||||
if (rc < 0) {
|
||||
dev_err(&pdev->dev, "Error in registering led class device, rc=%d\n",
|
||||
rc);
|
||||
goto led_reg_fail;
|
||||
}
|
||||
|
||||
/* Enabling sysfs entries */
|
||||
for (i = 0; i < ARRAY_SIZE(qpnp_vib_attrs); i++) {
|
||||
rc = sysfs_create_file(&vib->cdev.dev->kobj,
|
||||
&qpnp_vib_attrs[i].attr);
|
||||
if (rc < 0) {
|
||||
dev_err(&pdev->dev, "Error in creating sysfs file, rc=%d\n",
|
||||
rc);
|
||||
goto sysfs_fail;
|
||||
}
|
||||
}
|
||||
|
||||
dev_set_drvdata(&pdev->dev, vib);
|
||||
return rc;
|
||||
|
||||
sysfs_fail:
|
||||
dev_set_drvdata(&pdev->dev, NULL);
|
||||
led_reg_fail:
|
||||
hrtimer_cancel(&vib->vib_timer);
|
||||
cancel_work_sync(&vib->work);
|
||||
mutex_destroy(&vib->lock);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int qpnp_vibrator_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct qpnp_vib *vib = dev_get_drvdata(&pdev->dev);
|
||||
int i;
|
||||
|
||||
/* Removing sysfs entries */
|
||||
for (i = 0; i < ARRAY_SIZE(qpnp_vib_attrs); i++)
|
||||
sysfs_remove_file(&vib->cdev.dev->kobj,
|
||||
&qpnp_vib_attrs[i].attr);
|
||||
|
||||
dev_set_drvdata(&pdev->dev, NULL);
|
||||
hrtimer_cancel(&vib->vib_timer);
|
||||
cancel_work_sync(&vib->work);
|
||||
mutex_destroy(&vib->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id spmi_match_table[] = {
|
||||
{ .compatible = "qcom,qpnp-vibrator",
|
||||
},
|
||||
{}
|
||||
};
|
||||
|
||||
static struct platform_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 = qpnp_vibrator_remove,
|
||||
};
|
||||
|
||||
module_platform_driver(qpnp_vibrator_driver);
|
||||
|
||||
MODULE_DESCRIPTION("qpnp vibrator driver");
|
||||
MODULE_LICENSE("GPL v2");
|
Loading…
Reference in New Issue
Block a user