^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * LED Flash class driver for the AAT1290
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * 1.5A Step-Up Current Regulator for Flash LEDs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2015, Samsung Electronics Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Author: Jacek Anaszewski <j.anaszewski@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/led-class-flash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/pinctrl/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <media/v4l2-flash-led-class.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define AAT1290_MOVIE_MODE_CURRENT_ADDR 17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define AAT1290_MAX_MM_CURR_PERCENT_0 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define AAT1290_MAX_MM_CURR_PERCENT_100 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define AAT1290_FLASH_SAFETY_TIMER_ADDR 18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define AAT1290_MOVIE_MODE_CONFIG_ADDR 19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define AAT1290_MOVIE_MODE_OFF 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define AAT1290_MOVIE_MODE_ON 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define AAT1290_MM_CURRENT_RATIO_ADDR 20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define AAT1290_MM_TO_FL_1_92 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define AAT1290_MM_TO_FL_RATIO 1000 / 1920
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define AAT1290_MAX_MM_CURRENT(fl_max) (fl_max * AAT1290_MM_TO_FL_RATIO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define AAT1290_LATCH_TIME_MIN_US 500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define AAT1290_LATCH_TIME_MAX_US 1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define AAT1290_EN_SET_TICK_TIME_US 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define AAT1290_FLEN_OFF_DELAY_TIME_US 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define AAT1290_FLASH_TM_NUM_LEVELS 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define AAT1290_MM_CURRENT_SCALE_SIZE 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define AAT1290_NAME "aat1290"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct aat1290_led_config_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* maximum LED current in movie mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) u32 max_mm_current;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* maximum LED current in flash mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u32 max_flash_current;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /* maximum flash timeout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u32 max_flash_tm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* external strobe capability */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) bool has_external_strobe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* max LED brightness level */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) enum led_brightness max_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct aat1290_led {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* platform device data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct platform_device *pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /* secures access to the device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* corresponding LED Flash class device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct led_classdev_flash fled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* V4L2 Flash device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct v4l2_flash *v4l2_flash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) /* FLEN pin */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct gpio_desc *gpio_fl_en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* EN|SET pin */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct gpio_desc *gpio_en_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /* movie mode current scale */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) int *mm_current_scale;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /* device mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) bool movie_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* brightness cache */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) unsigned int torch_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static struct aat1290_led *fled_cdev_to_led(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct led_classdev_flash *fled_cdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return container_of(fled_cdev, struct aat1290_led, fled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static struct led_classdev_flash *led_cdev_to_fled_cdev(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct led_classdev *led_cdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return container_of(led_cdev, struct led_classdev_flash, led_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static void aat1290_as2cwire_write(struct aat1290_led *led, int addr, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) gpiod_direction_output(led->gpio_fl_en, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) gpiod_direction_output(led->gpio_en_set, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) udelay(AAT1290_FLEN_OFF_DELAY_TIME_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* write address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) for (i = 0; i < addr; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) udelay(AAT1290_EN_SET_TICK_TIME_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) gpiod_direction_output(led->gpio_en_set, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) udelay(AAT1290_EN_SET_TICK_TIME_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) gpiod_direction_output(led->gpio_en_set, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) usleep_range(AAT1290_LATCH_TIME_MIN_US, AAT1290_LATCH_TIME_MAX_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /* write data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) for (i = 0; i < value; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) udelay(AAT1290_EN_SET_TICK_TIME_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) gpiod_direction_output(led->gpio_en_set, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) udelay(AAT1290_EN_SET_TICK_TIME_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) gpiod_direction_output(led->gpio_en_set, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) usleep_range(AAT1290_LATCH_TIME_MIN_US, AAT1290_LATCH_TIME_MAX_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static void aat1290_set_flash_safety_timer(struct aat1290_led *led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) unsigned int micro_sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct led_classdev_flash *fled_cdev = &led->fled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct led_flash_setting *flash_tm = &fled_cdev->timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int flash_tm_reg = AAT1290_FLASH_TM_NUM_LEVELS -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) (micro_sec / flash_tm->step) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) aat1290_as2cwire_write(led, AAT1290_FLASH_SAFETY_TIMER_ADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) flash_tm_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) /* LED subsystem callbacks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static int aat1290_led_brightness_set(struct led_classdev *led_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) enum led_brightness brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct led_classdev_flash *fled_cdev = led_cdev_to_fled_cdev(led_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct aat1290_led *led = fled_cdev_to_led(fled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) mutex_lock(&led->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (brightness == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) gpiod_direction_output(led->gpio_fl_en, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) gpiod_direction_output(led->gpio_en_set, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) led->movie_mode = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (!led->movie_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) aat1290_as2cwire_write(led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) AAT1290_MM_CURRENT_RATIO_ADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) AAT1290_MM_TO_FL_1_92);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) led->movie_mode = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) aat1290_as2cwire_write(led, AAT1290_MOVIE_MODE_CURRENT_ADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) AAT1290_MAX_MM_CURR_PERCENT_0 - brightness);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) aat1290_as2cwire_write(led, AAT1290_MOVIE_MODE_CONFIG_ADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) AAT1290_MOVIE_MODE_ON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) mutex_unlock(&led->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static int aat1290_led_flash_strobe_set(struct led_classdev_flash *fled_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) bool state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct aat1290_led *led = fled_cdev_to_led(fled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct led_classdev *led_cdev = &fled_cdev->led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) struct led_flash_setting *timeout = &fled_cdev->timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) mutex_lock(&led->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) aat1290_set_flash_safety_timer(led, timeout->val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) gpiod_direction_output(led->gpio_fl_en, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) gpiod_direction_output(led->gpio_fl_en, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) gpiod_direction_output(led->gpio_en_set, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * To reenter movie mode after a flash event the part must be cycled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * off and back on to reset the movie mode and reprogrammed via the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * AS2Cwire. Therefore the brightness and movie_mode properties needs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * to be updated here to reflect the actual state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) led_cdev->brightness = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) led->movie_mode = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) mutex_unlock(&led->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static int aat1290_led_flash_timeout_set(struct led_classdev_flash *fled_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) u32 timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * Don't do anything - flash timeout is cached in the led-class-flash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * core and will be applied in the strobe_set op, as writing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * safety timer register spuriously turns the torch mode on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static int aat1290_led_parse_dt(struct aat1290_led *led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct aat1290_led_config_data *cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct device_node **sub_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct device *dev = &led->pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) struct device_node *child_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) #if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct pinctrl *pinctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) led->gpio_fl_en = devm_gpiod_get(dev, "flen", GPIOD_ASIS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (IS_ERR(led->gpio_fl_en)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ret = PTR_ERR(led->gpio_fl_en);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) dev_err(dev, "Unable to claim gpio \"flen\".\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) led->gpio_en_set = devm_gpiod_get(dev, "enset", GPIOD_ASIS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (IS_ERR(led->gpio_en_set)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) ret = PTR_ERR(led->gpio_en_set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) dev_err(dev, "Unable to claim gpio \"enset\".\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) #if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) pinctrl = devm_pinctrl_get_select_default(&led->pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (IS_ERR(pinctrl)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) cfg->has_external_strobe = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) dev_info(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) "No support for external strobe detected.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) cfg->has_external_strobe = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) child_node = of_get_next_available_child(dev_of_node(dev), NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (!child_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dev_err(dev, "No DT child node found for connected LED.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) ret = of_property_read_u32(child_node, "led-max-microamp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) &cfg->max_mm_current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * led-max-microamp will default to 1/20 of flash-max-microamp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * in case it is missing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) dev_warn(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) "led-max-microamp DT property missing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) ret = of_property_read_u32(child_node, "flash-max-microamp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) &cfg->max_flash_current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) dev_err(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) "flash-max-microamp DT property missing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) goto err_parse_dt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) ret = of_property_read_u32(child_node, "flash-max-timeout-us",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) &cfg->max_flash_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) dev_err(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) "flash-max-timeout-us DT property missing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) goto err_parse_dt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) *sub_node = child_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) err_parse_dt:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) of_node_put(child_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) static void aat1290_led_validate_mm_current(struct aat1290_led *led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct aat1290_led_config_data *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int i, b = 0, e = AAT1290_MM_CURRENT_SCALE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) while (e - b > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) i = b + (e - b) / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (cfg->max_mm_current < led->mm_current_scale[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) e = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) b = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) cfg->max_mm_current = led->mm_current_scale[b];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) cfg->max_brightness = b + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) static int init_mm_current_scale(struct aat1290_led *led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) struct aat1290_led_config_data *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static const int max_mm_current_percent[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 20, 22, 25, 28, 32, 36, 40, 45, 50, 56,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 63, 71, 79, 89, 100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) int i, max_mm_current =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) AAT1290_MAX_MM_CURRENT(cfg->max_flash_current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) led->mm_current_scale = devm_kzalloc(&led->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) sizeof(max_mm_current_percent),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (!led->mm_current_scale)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) for (i = 0; i < AAT1290_MM_CURRENT_SCALE_SIZE; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) led->mm_current_scale[i] = max_mm_current *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) max_mm_current_percent[i] / 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) static int aat1290_led_get_configuration(struct aat1290_led *led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct aat1290_led_config_data *cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct device_node **sub_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) ret = aat1290_led_parse_dt(led, cfg, sub_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * Init non-linear movie mode current scale basing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) * on the max flash current from led configuration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) ret = init_mm_current_scale(led, cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) aat1290_led_validate_mm_current(led, cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) #if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) devm_kfree(&led->pdev->dev, led->mm_current_scale);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) static void aat1290_init_flash_timeout(struct aat1290_led *led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) struct aat1290_led_config_data *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) struct led_classdev_flash *fled_cdev = &led->fled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) struct led_flash_setting *setting;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) /* Init flash timeout setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) setting = &fled_cdev->timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) setting->min = cfg->max_flash_tm / AAT1290_FLASH_TM_NUM_LEVELS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) setting->max = cfg->max_flash_tm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) setting->step = setting->min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) setting->val = setting->max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) #if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) static enum led_brightness aat1290_intensity_to_brightness(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct v4l2_flash *v4l2_flash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) s32 intensity)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct led_classdev_flash *fled_cdev = v4l2_flash->fled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) struct aat1290_led *led = fled_cdev_to_led(fled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) for (i = AAT1290_MM_CURRENT_SCALE_SIZE - 1; i >= 0; --i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (intensity >= led->mm_current_scale[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return i + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) static s32 aat1290_brightness_to_intensity(struct v4l2_flash *v4l2_flash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) enum led_brightness brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) struct led_classdev_flash *fled_cdev = v4l2_flash->fled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) struct aat1290_led *led = fled_cdev_to_led(fled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) return led->mm_current_scale[brightness - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) static int aat1290_led_external_strobe_set(struct v4l2_flash *v4l2_flash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) struct aat1290_led *led = fled_cdev_to_led(v4l2_flash->fled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) struct led_classdev_flash *fled_cdev = v4l2_flash->fled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) struct led_classdev *led_cdev = &fled_cdev->led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) struct pinctrl *pinctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) gpiod_direction_output(led->gpio_fl_en, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) gpiod_direction_output(led->gpio_en_set, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) led->movie_mode = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) led_cdev->brightness = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) pinctrl = devm_pinctrl_get_select(&led->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) enable ? "isp" : "host");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (IS_ERR(pinctrl)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) dev_warn(&led->pdev->dev, "Unable to switch strobe source.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return PTR_ERR(pinctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static void aat1290_init_v4l2_flash_config(struct aat1290_led *led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct aat1290_led_config_data *led_cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) struct v4l2_flash_config *v4l2_sd_cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) struct led_classdev *led_cdev = &led->fled_cdev.led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct led_flash_setting *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) strlcpy(v4l2_sd_cfg->dev_name, led_cdev->dev->kobj.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) sizeof(v4l2_sd_cfg->dev_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) s = &v4l2_sd_cfg->intensity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) s->min = led->mm_current_scale[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) s->max = led_cfg->max_mm_current;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) s->step = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) s->val = s->max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) v4l2_sd_cfg->has_external_strobe = led_cfg->has_external_strobe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) static const struct v4l2_flash_ops v4l2_flash_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) .external_strobe_set = aat1290_led_external_strobe_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) .intensity_to_led_brightness = aat1290_intensity_to_brightness,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) .led_brightness_to_intensity = aat1290_brightness_to_intensity,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) static inline void aat1290_init_v4l2_flash_config(struct aat1290_led *led,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) struct aat1290_led_config_data *led_cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) struct v4l2_flash_config *v4l2_sd_cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static const struct v4l2_flash_ops v4l2_flash_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) static const struct led_flash_ops flash_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) .strobe_set = aat1290_led_flash_strobe_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) .timeout_set = aat1290_led_flash_timeout_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) static int aat1290_led_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) struct device_node *sub_node = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) struct aat1290_led *led;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) struct led_classdev *led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) struct led_classdev_flash *fled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) struct led_init_data init_data = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) struct aat1290_led_config_data led_cfg = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) struct v4l2_flash_config v4l2_sd_cfg = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) led = devm_kzalloc(dev, sizeof(*led), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (!led)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) led->pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) platform_set_drvdata(pdev, led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) fled_cdev = &led->fled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) fled_cdev->ops = &flash_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) led_cdev = &fled_cdev->led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) ret = aat1290_led_get_configuration(led, &led_cfg, &sub_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) mutex_init(&led->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) /* Initialize LED Flash class device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) led_cdev->brightness_set_blocking = aat1290_led_brightness_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) led_cdev->max_brightness = led_cfg.max_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) led_cdev->flags |= LED_DEV_CAP_FLASH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) aat1290_init_flash_timeout(led, &led_cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) init_data.fwnode = of_fwnode_handle(sub_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) init_data.devicename = AAT1290_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) /* Register LED Flash class device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) ret = led_classdev_flash_register_ext(&pdev->dev, fled_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) &init_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) goto err_flash_register;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) aat1290_init_v4l2_flash_config(led, &led_cfg, &v4l2_sd_cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) /* Create V4L2 Flash subdev. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) led->v4l2_flash = v4l2_flash_init(dev, of_fwnode_handle(sub_node),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) fled_cdev, &v4l2_flash_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) &v4l2_sd_cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (IS_ERR(led->v4l2_flash)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) ret = PTR_ERR(led->v4l2_flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) goto error_v4l2_flash_init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) error_v4l2_flash_init:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) led_classdev_flash_unregister(fled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) err_flash_register:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) mutex_destroy(&led->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) static int aat1290_led_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) struct aat1290_led *led = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) v4l2_flash_release(led->v4l2_flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) led_classdev_flash_unregister(&led->fled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) mutex_destroy(&led->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) static const struct of_device_id aat1290_led_dt_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) { .compatible = "skyworks,aat1290" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) MODULE_DEVICE_TABLE(of, aat1290_led_dt_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) static struct platform_driver aat1290_led_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) .probe = aat1290_led_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) .remove = aat1290_led_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) .name = "aat1290",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) .of_match_table = aat1290_led_dt_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) module_platform_driver(aat1290_led_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) MODULE_AUTHOR("Jacek Anaszewski <j.anaszewski@samsung.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) MODULE_DESCRIPTION("Skyworks Current Regulator for Flash LEDs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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