^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) * drivers/leds/leds-as3645a.c - AS3645A and LM3555 flash controllers driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2008-2011 Nokia Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2011, 2017 Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Based on drivers/media/i2c/as3645a.c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Contact: Sakari Ailus <sakari.ailus@iki.fi>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/led-class-flash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/property.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <media/v4l2-flash-led-class.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define AS_TIMER_US_TO_CODE(t) (((t) / 1000 - 100) / 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define AS_TIMER_CODE_TO_US(c) ((50 * (c) + 100) * 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* Register definitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* Read-only Design info register: Reset state: xxxx 0001 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define AS_DESIGN_INFO_REG 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define AS_DESIGN_INFO_FACTORY(x) (((x) >> 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define AS_DESIGN_INFO_MODEL(x) ((x) & 0x0f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* Read-only Version control register: Reset state: 0000 0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * for first engineering samples
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define AS_VERSION_CONTROL_REG 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define AS_VERSION_CONTROL_RFU(x) (((x) >> 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define AS_VERSION_CONTROL_VERSION(x) ((x) & 0x0f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /* Read / Write (Indicator and timer register): Reset state: 0000 1111 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define AS_INDICATOR_AND_TIMER_REG 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define AS_INDICATOR_AND_TIMER_TIMEOUT_SHIFT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define AS_INDICATOR_AND_TIMER_VREF_SHIFT 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define AS_INDICATOR_AND_TIMER_INDICATOR_SHIFT 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* Read / Write (Current set register): Reset state: 0110 1001 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define AS_CURRENT_SET_REG 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define AS_CURRENT_ASSIST_LIGHT_SHIFT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define AS_CURRENT_LED_DET_ON (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define AS_CURRENT_FLASH_CURRENT_SHIFT 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* Read / Write (Control register): Reset state: 1011 0100 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define AS_CONTROL_REG 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define AS_CONTROL_MODE_SETTING_SHIFT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define AS_CONTROL_STROBE_ON (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define AS_CONTROL_OUT_ON (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define AS_CONTROL_EXT_TORCH_ON (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define AS_CONTROL_STROBE_TYPE_EDGE (0 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define AS_CONTROL_STROBE_TYPE_LEVEL (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define AS_CONTROL_COIL_PEAK_SHIFT 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /* Read only (D3 is read / write) (Fault and info): Reset state: 0000 x000 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define AS_FAULT_INFO_REG 0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define AS_FAULT_INFO_INDUCTOR_PEAK_LIMIT (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define AS_FAULT_INFO_INDICATOR_LED (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define AS_FAULT_INFO_LED_AMOUNT (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define AS_FAULT_INFO_TIMEOUT (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define AS_FAULT_INFO_OVER_TEMPERATURE (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define AS_FAULT_INFO_SHORT_CIRCUIT (1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define AS_FAULT_INFO_OVER_VOLTAGE (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* Boost register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define AS_BOOST_REG 0x0d
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define AS_BOOST_CURRENT_DISABLE (0 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define AS_BOOST_CURRENT_ENABLE (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /* Password register is used to unlock boost register writing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define AS_PASSWORD_REG 0x0f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define AS_PASSWORD_UNLOCK_VALUE 0x55
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define AS_NAME "as3645a"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define AS_I2C_ADDR (0x60 >> 1) /* W:0x60, R:0x61 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define AS_FLASH_TIMEOUT_MIN 100000 /* us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define AS_FLASH_TIMEOUT_MAX 850000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define AS_FLASH_TIMEOUT_STEP 50000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define AS_FLASH_INTENSITY_MIN 200000 /* uA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define AS_FLASH_INTENSITY_MAX_1LED 500000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define AS_FLASH_INTENSITY_MAX_2LEDS 400000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define AS_FLASH_INTENSITY_STEP 20000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define AS_TORCH_INTENSITY_MIN 20000 /* uA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #define AS_TORCH_INTENSITY_MAX 160000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define AS_TORCH_INTENSITY_STEP 20000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define AS_INDICATOR_INTENSITY_MIN 0 /* uA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define AS_INDICATOR_INTENSITY_MAX 10000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define AS_INDICATOR_INTENSITY_STEP 2500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define AS_PEAK_mA_MAX 2000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define AS_PEAK_mA_TO_REG(a) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ((min_t(u32, AS_PEAK_mA_MAX, a) - 1250) / 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* LED numbers for Devicetree */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define AS_LED_FLASH 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define AS_LED_INDICATOR 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) enum as_mode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) AS_MODE_EXT_TORCH = 0 << AS_CONTROL_MODE_SETTING_SHIFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) AS_MODE_INDICATOR = 1 << AS_CONTROL_MODE_SETTING_SHIFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) AS_MODE_ASSIST = 2 << AS_CONTROL_MODE_SETTING_SHIFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) AS_MODE_FLASH = 3 << AS_CONTROL_MODE_SETTING_SHIFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct as3645a_config {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) u32 flash_timeout_us;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) u32 flash_max_ua;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) u32 assist_max_ua;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) u32 indicator_max_ua;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) u32 voltage_reference;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) u32 peak;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct as3645a {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct mutex mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct led_classdev_flash fled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct led_classdev iled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) struct v4l2_flash *vf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct v4l2_flash *vfind;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct fwnode_handle *flash_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct fwnode_handle *indicator_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct as3645a_config cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) enum as_mode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) unsigned int timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) unsigned int flash_current;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) unsigned int assist_current;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) unsigned int indicator_current;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) enum v4l2_flash_strobe_source strobe_source;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define fled_to_as3645a(__fled) container_of(__fled, struct as3645a, fled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define iled_cdev_to_as3645a(__iled_cdev) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) container_of(__iled_cdev, struct as3645a, iled_cdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /* Return negative errno else zero on success */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static int as3645a_write(struct as3645a *flash, u8 addr, u8 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct i2c_client *client = flash->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) int rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) rval = i2c_smbus_write_byte_data(client, addr, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) dev_dbg(&client->dev, "Write Addr:%02X Val:%02X %s\n", addr, val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) rval < 0 ? "fail" : "ok");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /* Return negative errno else a data byte received from the device. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static int as3645a_read(struct as3645a *flash, u8 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct i2c_client *client = flash->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) int rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) rval = i2c_smbus_read_byte_data(client, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) dev_dbg(&client->dev, "Read Addr:%02X Val:%02X %s\n", addr, rval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) rval < 0 ? "fail" : "ok");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /* -----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * Hardware configuration and trigger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * as3645a_set_config - Set flash configuration registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * @flash: The flash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * Configure the hardware with flash, assist and indicator currents, as well as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * flash timeout.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * Return 0 on success, or a negative error code if an I2C communication error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * occurred.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static int as3645a_set_current(struct as3645a *flash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) u8 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) val = (flash->flash_current << AS_CURRENT_FLASH_CURRENT_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) | (flash->assist_current << AS_CURRENT_ASSIST_LIGHT_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) | AS_CURRENT_LED_DET_ON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return as3645a_write(flash, AS_CURRENT_SET_REG, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static int as3645a_set_timeout(struct as3645a *flash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) u8 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) val = flash->timeout << AS_INDICATOR_AND_TIMER_TIMEOUT_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) val |= (flash->cfg.voltage_reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) << AS_INDICATOR_AND_TIMER_VREF_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) | ((flash->indicator_current ? flash->indicator_current - 1 : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) << AS_INDICATOR_AND_TIMER_INDICATOR_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return as3645a_write(flash, AS_INDICATOR_AND_TIMER_REG, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * as3645a_set_control - Set flash control register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * @flash: The flash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) * @mode: Desired output mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) * @on: Desired output state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * Configure the hardware with output mode and state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * Return 0 on success, or a negative error code if an I2C communication error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * occurred.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) as3645a_set_control(struct as3645a *flash, enum as_mode mode, bool on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) u8 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) /* Configure output parameters and operation mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) reg = (flash->cfg.peak << AS_CONTROL_COIL_PEAK_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) | (on ? AS_CONTROL_OUT_ON : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) | mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (mode == AS_MODE_FLASH &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) flash->strobe_source == V4L2_FLASH_STROBE_SOURCE_EXTERNAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) reg |= AS_CONTROL_STROBE_TYPE_LEVEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) | AS_CONTROL_STROBE_ON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) return as3645a_write(flash, AS_CONTROL_REG, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static int as3645a_get_fault(struct led_classdev_flash *fled, u32 *fault)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) struct as3645a *flash = fled_to_as3645a(fled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) int rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /* NOTE: reading register clears fault status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) rval = as3645a_read(flash, AS_FAULT_INFO_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (rval & AS_FAULT_INFO_INDUCTOR_PEAK_LIMIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) *fault |= LED_FAULT_OVER_CURRENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (rval & AS_FAULT_INFO_INDICATOR_LED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) *fault |= LED_FAULT_INDICATOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) dev_dbg(&flash->client->dev, "%u connected LEDs\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) rval & AS_FAULT_INFO_LED_AMOUNT ? 2 : 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (rval & AS_FAULT_INFO_TIMEOUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) *fault |= LED_FAULT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (rval & AS_FAULT_INFO_OVER_TEMPERATURE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) *fault |= LED_FAULT_OVER_TEMPERATURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (rval & AS_FAULT_INFO_SHORT_CIRCUIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) *fault |= LED_FAULT_OVER_CURRENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (rval & AS_FAULT_INFO_OVER_VOLTAGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) *fault |= LED_FAULT_INPUT_VOLTAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static unsigned int __as3645a_current_to_reg(unsigned int min, unsigned int max,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) unsigned int step,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) unsigned int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (val < min)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) val = min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (val > max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) val = max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return (val - min) / step;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) static unsigned int as3645a_current_to_reg(struct as3645a *flash, bool is_flash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) unsigned int ua)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (is_flash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) return __as3645a_current_to_reg(AS_TORCH_INTENSITY_MIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) flash->cfg.assist_max_ua,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) AS_TORCH_INTENSITY_STEP, ua);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return __as3645a_current_to_reg(AS_FLASH_INTENSITY_MIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) flash->cfg.flash_max_ua,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) AS_FLASH_INTENSITY_STEP, ua);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static int as3645a_set_indicator_brightness(struct led_classdev *iled_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) enum led_brightness brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) struct as3645a *flash = iled_cdev_to_as3645a(iled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) int rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) flash->indicator_current = brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) rval = as3645a_set_timeout(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (rval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return as3645a_set_control(flash, AS_MODE_INDICATOR, brightness);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static int as3645a_set_assist_brightness(struct led_classdev *fled_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) enum led_brightness brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) struct led_classdev_flash *fled = lcdev_to_flcdev(fled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct as3645a *flash = fled_to_as3645a(fled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) int rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (brightness) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) /* Register value 0 is 20 mA. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) flash->assist_current = brightness - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) rval = as3645a_set_current(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) if (rval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return as3645a_set_control(flash, AS_MODE_ASSIST, brightness);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static int as3645a_set_flash_brightness(struct led_classdev_flash *fled,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) u32 brightness_ua)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) struct as3645a *flash = fled_to_as3645a(fled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) flash->flash_current = as3645a_current_to_reg(flash, true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) brightness_ua);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) return as3645a_set_current(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) static int as3645a_set_flash_timeout(struct led_classdev_flash *fled,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) u32 timeout_us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) struct as3645a *flash = fled_to_as3645a(fled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) flash->timeout = AS_TIMER_US_TO_CODE(timeout_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) return as3645a_set_timeout(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) static int as3645a_set_strobe(struct led_classdev_flash *fled, bool state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct as3645a *flash = fled_to_as3645a(fled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return as3645a_set_control(flash, AS_MODE_FLASH, state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) static const struct led_flash_ops as3645a_led_flash_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) .flash_brightness_set = as3645a_set_flash_brightness,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) .timeout_set = as3645a_set_flash_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) .strobe_set = as3645a_set_strobe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) .fault_get = as3645a_get_fault,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static int as3645a_setup(struct as3645a *flash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct device *dev = &flash->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) u32 fault = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) int rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) /* clear errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) rval = as3645a_read(flash, AS_FAULT_INFO_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) dev_dbg(dev, "Fault info: %02x\n", rval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) rval = as3645a_set_current(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) rval = as3645a_set_timeout(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) rval = as3645a_set_control(flash, AS_MODE_INDICATOR, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) /* read status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) rval = as3645a_get_fault(&flash->fled, &fault);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) dev_dbg(dev, "AS_INDICATOR_AND_TIMER_REG: %02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) as3645a_read(flash, AS_INDICATOR_AND_TIMER_REG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) dev_dbg(dev, "AS_CURRENT_SET_REG: %02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) as3645a_read(flash, AS_CURRENT_SET_REG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) dev_dbg(dev, "AS_CONTROL_REG: %02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) as3645a_read(flash, AS_CONTROL_REG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) return rval & ~AS_FAULT_INFO_LED_AMOUNT ? -EIO : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) static int as3645a_detect(struct as3645a *flash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct device *dev = &flash->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) int rval, man, model, rfu, version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) const char *vendor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) rval = as3645a_read(flash, AS_DESIGN_INFO_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (rval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) dev_err(dev, "can't read design info reg\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) man = AS_DESIGN_INFO_FACTORY(rval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) model = AS_DESIGN_INFO_MODEL(rval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) rval = as3645a_read(flash, AS_VERSION_CONTROL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (rval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) dev_err(dev, "can't read version control reg\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) rfu = AS_VERSION_CONTROL_RFU(rval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) version = AS_VERSION_CONTROL_VERSION(rval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) /* Verify the chip model and version. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) if (model != 0x01 || rfu != 0x00) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) dev_err(dev, "AS3645A not detected (model %d rfu %d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) model, rfu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return -ENODEV;
^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) switch (man) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) vendor = "AMS, Austria Micro Systems";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) vendor = "ADI, Analog Devices Inc.";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) vendor = "NSC, National Semiconductor";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) vendor = "NXP";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) case 5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) vendor = "TI, Texas Instrument";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) vendor = "Unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) dev_info(dev, "Chip vendor: %s (%d) Version: %d\n", vendor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) man, version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) rval = as3645a_write(flash, AS_PASSWORD_REG, AS_PASSWORD_UNLOCK_VALUE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return as3645a_write(flash, AS_BOOST_REG, AS_BOOST_CURRENT_DISABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) static int as3645a_parse_node(struct as3645a *flash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) struct fwnode_handle *fwnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) struct as3645a_config *cfg = &flash->cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) struct fwnode_handle *child;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) int rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) fwnode_for_each_child_node(fwnode, child) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) u32 id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) fwnode_property_read_u32(child, "reg", &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) switch (id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) case AS_LED_FLASH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) flash->flash_node = child;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) fwnode_handle_get(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) case AS_LED_INDICATOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) flash->indicator_node = child;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) fwnode_handle_get(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) dev_warn(&flash->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) "unknown LED %u encountered, ignoring\n", id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) if (!flash->flash_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) dev_err(&flash->client->dev, "can't find flash node\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) rval = fwnode_property_read_u32(flash->flash_node, "flash-timeout-us",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) &cfg->flash_timeout_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) if (rval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) dev_err(&flash->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) "can't read flash-timeout-us property for flash\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) rval = fwnode_property_read_u32(flash->flash_node, "flash-max-microamp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) &cfg->flash_max_ua);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (rval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) dev_err(&flash->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) "can't read flash-max-microamp property for flash\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) rval = fwnode_property_read_u32(flash->flash_node, "led-max-microamp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) &cfg->assist_max_ua);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if (rval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) dev_err(&flash->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) "can't read led-max-microamp property for flash\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) fwnode_property_read_u32(flash->flash_node, "voltage-reference",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) &cfg->voltage_reference);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) fwnode_property_read_u32(flash->flash_node, "ams,input-max-microamp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) &cfg->peak);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) cfg->peak = AS_PEAK_mA_TO_REG(cfg->peak);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) if (!flash->indicator_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) dev_warn(&flash->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) "can't find indicator node\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) rval = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) goto out_err;
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) rval = fwnode_property_read_u32(flash->indicator_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) "led-max-microamp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) &cfg->indicator_max_ua);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) if (rval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) dev_err(&flash->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) "can't read led-max-microamp property for indicator\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) fwnode_handle_put(flash->flash_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) fwnode_handle_put(flash->indicator_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) static int as3645a_led_class_setup(struct as3645a *flash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) struct led_classdev *fled_cdev = &flash->fled.led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) struct led_classdev *iled_cdev = &flash->iled_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) struct led_init_data init_data = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) struct led_flash_setting *cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) int rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) iled_cdev->brightness_set_blocking = as3645a_set_indicator_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) iled_cdev->max_brightness =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) flash->cfg.indicator_max_ua / AS_INDICATOR_INTENSITY_STEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) iled_cdev->flags = LED_CORE_SUSPENDRESUME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) init_data.fwnode = flash->indicator_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) init_data.devicename = AS_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) init_data.default_label = "indicator";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) rval = led_classdev_register_ext(&flash->client->dev, iled_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) &init_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) cfg = &flash->fled.brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) cfg->min = AS_FLASH_INTENSITY_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) cfg->max = flash->cfg.flash_max_ua;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) cfg->step = AS_FLASH_INTENSITY_STEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) cfg->val = flash->cfg.flash_max_ua;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) cfg = &flash->fled.timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) cfg->min = AS_FLASH_TIMEOUT_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) cfg->max = flash->cfg.flash_timeout_us;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) cfg->step = AS_FLASH_TIMEOUT_STEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) cfg->val = flash->cfg.flash_timeout_us;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) flash->fled.ops = &as3645a_led_flash_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) fled_cdev->brightness_set_blocking = as3645a_set_assist_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) /* Value 0 is off in LED class. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) fled_cdev->max_brightness =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) as3645a_current_to_reg(flash, false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) flash->cfg.assist_max_ua) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) fled_cdev->flags = LED_DEV_CAP_FLASH | LED_CORE_SUSPENDRESUME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) init_data.fwnode = flash->flash_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) init_data.devicename = AS_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) init_data.default_label = "flash";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) rval = led_classdev_flash_register_ext(&flash->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) &flash->fled, &init_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) if (rval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) led_classdev_unregister(iled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) dev_err(&flash->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) "led_classdev_flash_register() failed, error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) rval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) static int as3645a_v4l2_setup(struct as3645a *flash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) struct led_classdev_flash *fled = &flash->fled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) struct led_classdev *led = &fled->led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) struct v4l2_flash_config cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) .intensity = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) .min = AS_TORCH_INTENSITY_MIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) .max = flash->cfg.assist_max_ua,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) .step = AS_TORCH_INTENSITY_STEP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) .val = flash->cfg.assist_max_ua,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) struct v4l2_flash_config cfgind = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) .intensity = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) .min = AS_INDICATOR_INTENSITY_MIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) .max = flash->cfg.indicator_max_ua,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) .step = AS_INDICATOR_INTENSITY_STEP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) .val = flash->cfg.indicator_max_ua,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) strlcpy(cfg.dev_name, led->dev->kobj.name, sizeof(cfg.dev_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) strlcpy(cfgind.dev_name, flash->iled_cdev.dev->kobj.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) sizeof(cfgind.dev_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) flash->vf = v4l2_flash_init(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) &flash->client->dev, flash->flash_node, &flash->fled, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) &cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) if (IS_ERR(flash->vf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) return PTR_ERR(flash->vf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) flash->vfind = v4l2_flash_indicator_init(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) &flash->client->dev, flash->indicator_node, &flash->iled_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) &cfgind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) if (IS_ERR(flash->vfind)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) v4l2_flash_release(flash->vf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) return PTR_ERR(flash->vfind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) static int as3645a_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) struct as3645a *flash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) int rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) if (!dev_fwnode(&client->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) if (flash == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) flash->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) rval = as3645a_parse_node(flash, dev_fwnode(&client->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) rval = as3645a_detect(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) if (rval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) goto out_put_nodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) mutex_init(&flash->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) i2c_set_clientdata(client, flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) rval = as3645a_setup(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) if (rval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) goto out_mutex_destroy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) rval = as3645a_led_class_setup(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) if (rval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) goto out_mutex_destroy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) rval = as3645a_v4l2_setup(flash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) if (rval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) goto out_led_classdev_flash_unregister;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) out_led_classdev_flash_unregister:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) led_classdev_flash_unregister(&flash->fled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) out_mutex_destroy:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) mutex_destroy(&flash->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) out_put_nodes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) fwnode_handle_put(flash->flash_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) fwnode_handle_put(flash->indicator_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) return rval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) static int as3645a_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) struct as3645a *flash = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) as3645a_set_control(flash, AS_MODE_EXT_TORCH, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) v4l2_flash_release(flash->vf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) v4l2_flash_release(flash->vfind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) led_classdev_flash_unregister(&flash->fled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) led_classdev_unregister(&flash->iled_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) mutex_destroy(&flash->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) fwnode_handle_put(flash->flash_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) fwnode_handle_put(flash->indicator_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) static const struct i2c_device_id as3645a_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) { AS_NAME, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) MODULE_DEVICE_TABLE(i2c, as3645a_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) static const struct of_device_id as3645a_of_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) { .compatible = "ams,as3645a" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) MODULE_DEVICE_TABLE(of, as3645a_of_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) static struct i2c_driver as3645a_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) .of_match_table = as3645a_of_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) .name = AS_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) .probe_new = as3645a_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) .remove = as3645a_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) .id_table = as3645a_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) module_i2c_driver(as3645a_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) MODULE_AUTHOR("Sakari Ailus <sakari.ailus@iki.fi>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) MODULE_DESCRIPTION("LED flash driver for AS3645A, LM3555 and their clones");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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