1 // SPDX-License-Identifier: GPL-2.0-only
16 #include <linux/platform_data/leds-lp55xx.h>
18 #include <dt-bindings/leds/leds-lp55xx.h>
20 #include "leds-lp55xx-common.h"
27  * 0x80 engine 3 program (4 pages)
30  * 0xe0 engine 3 muxing info (1 page)
52 #define   LP5569_CP_MODE_MASK		GENMASK(4, 3)
57 #define   LP5569_LED_OPEN_TEST		BIT(3)
68 #define   LP5569_CLK_OUTPUT		BIT(3)
84 #define   LP5569_LED_FAULT3		BIT(3)
120 	/* Precompiled pattern per ENGINE setting LED MUX start and stop addresses */  in lp5569_init_program_engine()
140 	/* Write precompiled pattern for LED MUX address space for each ENGINE */  in lp5569_init_program_engine()
142 		chip->engine_idx = i;  in lp5569_init_program_engine()
147 					   pattern[i - 1][j]);  in lp5569_init_program_engine()
161 		dev_err(&chip->cl->dev,  in lp5569_init_program_engine()
162 			"could not configure LED engine, status = 0x%.2x\n",  in lp5569_init_program_engine()
164 		ret = -EINVAL;  in lp5569_init_program_engine()
178 	val |= FIELD_PREP(LP5569_CP_MODE_MASK, chip->pdata->charge_pump_mode);  in lp5569_post_init_device()
183 	if (chip->pdata->clock_mode == LP55XX_CLOCK_INT) {  in lp5569_post_init_device()
209 static ssize_t lp5569_led_open_test(struct lp55xx_led *led, char *buf)  in lp5569_led_open_test()  argument
211 	struct lp55xx_chip *chip = led->chip;  in lp5569_led_open_test()
212 	struct lp55xx_platform_data *pdata = chip->pdata;  in lp5569_led_open_test()
214 	struct lp55xx_led *led_tmp = led;  in lp5569_led_open_test()
233 	/* Enable LED Open Test */  in lp5569_led_open_test()
247 	/* Enable LED and set to 100% brightness */  in lp5569_led_open_test()
248 	for (i = 0; i < pdata->num_channels; i++) {  in lp5569_led_open_test()
249 		ret = lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led_tmp->chan_nr,  in lp5569_led_open_test()
260 	/* Parse status led fault 1 regs */  in lp5569_led_open_test()
268 	/* Parse status led fault 2 regs */  in lp5569_led_open_test()
276 	/* Report LED fault */  in lp5569_led_open_test()
277 	led_tmp = led;  in lp5569_led_open_test()
278 	for (i = 0; i < pdata->num_channels; i++) {  in lp5569_led_open_test()
279 		if (leds_fault[led_tmp->chan_nr])  in lp5569_led_open_test()
280 			pos += sysfs_emit_at(buf, pos, "LED %d OPEN FAIL\n",  in lp5569_led_open_test()
281 					     led_tmp->chan_nr);  in lp5569_led_open_test()
289 	/* Disable LED Open Test */  in lp5569_led_open_test()
292 	led_tmp = led;  in lp5569_led_open_test()
293 	for (i = 0; i < pdata->num_channels; i++) {  in lp5569_led_open_test()
294 		lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led_tmp->chan_nr, 0);  in lp5569_led_open_test()
302 static ssize_t lp5569_led_short_test(struct lp55xx_led *led, char *buf)  in lp5569_led_short_test()  argument
304 	struct lp55xx_chip *chip = led->chip;  in lp5569_led_short_test()
305 	struct lp55xx_platform_data *pdata = chip->pdata;  in lp5569_led_short_test()
307 	struct lp55xx_led *led_tmp = led;  in lp5569_led_short_test()
326 	/* Enable LED and set to 100% brightness and current to 100% (25.5mA) */  in lp5569_led_short_test()
327 	for (i = 0; i < pdata->num_channels; i++) {  in lp5569_led_short_test()
328 		ret = lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led_tmp->chan_nr,  in lp5569_led_short_test()
333 		ret = lp55xx_write(chip, LP5569_REG_LED_CURRENT_BASE + led_tmp->chan_nr,  in lp5569_led_short_test()
349 	/* Enable LED Shorted Test */  in lp5569_led_short_test()
358 	/* Parse status led fault 1 regs */  in lp5569_led_short_test()
366 	/* Parse status led fault 2 regs */  in lp5569_led_short_test()
374 	/* Report LED fault */  in lp5569_led_short_test()
375 	led_tmp = led;  in lp5569_led_short_test()
376 	for (i = 0; i < pdata->num_channels; i++) {  in lp5569_led_short_test()
377 		if (leds_fault[led_tmp->chan_nr])  in lp5569_led_short_test()
378 			pos += sysfs_emit_at(buf, pos, "LED %d SHORTED FAIL\n",  in lp5569_led_short_test()
379 					     led_tmp->chan_nr);  in lp5569_led_short_test()
387 	/* Disable LED Shorted Test */  in lp5569_led_short_test()
390 	led_tmp = led;  in lp5569_led_short_test()
391 	for (i = 0; i < pdata->num_channels; i++) {  in lp5569_led_short_test()
392 		lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led_tmp->chan_nr, 0);  in lp5569_led_short_test()
404 	struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));  in lp5569_selftest()  local
405 	struct lp55xx_chip *chip = led->chip;  in lp5569_selftest()
408 	guard(mutex)(&chip->lock);  in lp5569_selftest()
410 	/* Test LED Open */  in lp5569_selftest()
411 	pos = lp5569_led_open_test(led, buf);  in lp5569_selftest()
415 	/* Test LED Shorted */  in lp5569_selftest()
416 	pos += lp5569_led_short_test(led, buf);  in lp5569_selftest()
420 	for (i = 0; i < chip->pdata->num_channels; i++) {  in lp5569_selftest()
422 		lp55xx_write(chip, LP5569_REG_LED_CURRENT_BASE + led->chan_nr,  in lp5569_selftest()
423 			     led->led_current);  in lp5569_selftest()
426 		lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led->chan_nr,  in lp5569_selftest()
427 			     led->brightness);  in lp5569_selftest()
428 		led++;  in lp5569_selftest()
436 LP55XX_DEV_ATTR_ENGINE_MODE(3);
439 LP55XX_DEV_ATTR_ENGINE_LEDS(3);
442 LP55XX_DEV_ATTR_ENGINE_LOAD(3);
446 LP55XX_DEV_ATTR_MASTER_FADER(3);
543 MODULE_DESCRIPTION("LP5569 LED engine");