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Commit c388c4f1 authored by Subbaraman Narayanamurthy's avatar Subbaraman Narayanamurthy
Browse files

leds: qpnp-flash-v2: Add support for QPNP flash v2 LED driver 



QPNP Flash v2 LED driver supports the flash LED peripheral on
QTI PMICs like PMI8998, PM8150L and their derivatives to support
camera flash operation.

This is taken as a snapshot from msm-4.14 kernel
'commit 9bb584ae3a9d ("msm/sde/rotator: Add rev checks for sdmmagpie")'

This change also splits some functions to fix cyclomatic complexity
warnings.

Change-Id: I168b1e3e5ce62852f37ee2653aada90f2a75e2ec
Signed-off-by: default avatarSubbaraman Narayanamurthy <subbaram@codeaurora.org>
parent 215d6212

drivers/leds/Kconfig

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Original line number Diff line number Diff line
@@ -756,6 +756,17 @@ config LEDS_NIC78BX 
	  To compile this driver as a module, choose M here: the module

	  will be called leds-nic78bx.



config LEDS_QPNP_FLASH_V2

        tristate "Support for QPNP V2 Flash LEDs"

        depends on LEDS_CLASS && MFD_SPMI_PMIC

	select LEDS_TRIGGERS

        help

          This driver supports the flash V2 LED functionality of Qualcomm

          Technologies, Inc. QPNP PMICs.  This driver supports PMICs starting

          from PMI8998, PM8150L and their derivatives.  It can configure the

          flash LED target current for several independent channels.  It also

          supports various over current and over temperature mitigation features.



comment "LED Triggers"

source "drivers/leds/trigger/Kconfig"

drivers/leds/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -78,6 +78,7 @@ obj-$(CONFIG_LEDS_MT6323) += leds-mt6323.o 
obj-$(CONFIG_LEDS_LM3692X)		+= leds-lm3692x.o

obj-$(CONFIG_LEDS_SC27XX_BLTC)		+= leds-sc27xx-bltc.o

obj-$(CONFIG_LEDS_LM3601X)		+= leds-lm3601x.o

obj-$(CONFIG_LEDS_QPNP_FLASH_V2)        += leds-qpnp-flash-v2.o



# LED SPI Drivers

obj-$(CONFIG_LEDS_CR0014114)		+= leds-cr0014114.o

drivers/leds/leds-qpnp-flash-v2.c

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File added.

Preview size limit exceeded, changes collapsed.

drivers/leds/leds.h

+16 −0
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@@ -21,6 +21,22 @@ static inline int led_get_brightness(struct led_classdev *led_cdev) 
	return led_cdev->brightness;

}



static inline struct led_classdev *trigger_to_lcdev(struct led_trigger *trig)

{

	struct led_classdev *led_cdev;



	read_lock(&trig->leddev_list_lock);

	list_for_each_entry(led_cdev, &trig->led_cdevs, trig_list) {

		if (!strcmp(led_cdev->default_trigger, trig->name)) {

			read_unlock(&trig->leddev_list_lock);

			return led_cdev;

		}

	}



	read_unlock(&trig->leddev_list_lock);

	return NULL;

}



void led_init_core(struct led_classdev *led_cdev);

void led_stop_software_blink(struct led_classdev *led_cdev);

void led_set_brightness_nopm(struct led_classdev *led_cdev,

include/linux/leds-qpnp-flash-v2.h

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+27 −0
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/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (c) 2016, The Linux Foundation. All rights reserved.

 */



#ifndef __LEDS_QPNP_FLASH_V2_H

#define __LEDS_QPNP_FLASH_V2_H



#include <linux/leds.h>

#include <linux/notifier.h>



enum flash_led_irq_type {

	LED_FAULT_IRQ = BIT(0),

	MITIGATION_IRQ = BIT(1),

	FLASH_TIMER_EXP_IRQ = BIT(2),

	ALL_RAMP_DOWN_DONE_IRQ = BIT(3),

	ALL_RAMP_UP_DONE_IRQ = BIT(4),

	LED3_RAMP_UP_DONE_IRQ = BIT(5),

	LED2_RAMP_UP_DONE_IRQ = BIT(6),

	LED1_RAMP_UP_DONE_IRQ = BIT(7),

	INVALID_IRQ = BIT(8),

};



int qpnp_flash_led_register_irq_notifier(struct notifier_block *nb);

int qpnp_flash_led_unregister_irq_notifier(struct notifier_block *nb);



#endif