| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Kim (Woogyom) Milo | 599 | 37.53% | 19 | 35.19% |
| Samu Onkalo | 575 | 36.03% | 3 | 5.56% |
| Ansuel Smith | 192 | 12.03% | 17 | 31.48% |
| Toshi Kikuchi | 65 | 4.07% | 1 | 1.85% |
| Maarten Zanders | 56 | 3.51% | 2 | 3.70% |
| Jingoo Han | 48 | 3.01% | 1 | 1.85% |
| Axel Lin | 32 | 2.01% | 2 | 3.70% |
| Phillip Potter | 9 | 0.56% | 1 | 1.85% |
| Daniel Mack | 7 | 0.44% | 1 | 1.85% |
| Dan Murphy | 5 | 0.31% | 2 | 3.70% |
| Sachin Kamat | 3 | 0.19% | 1 | 1.85% |
| Thomas Gleixner | 2 | 0.13% | 1 | 1.85% |
| Arvind Yadav | 1 | 0.06% | 1 | 1.85% |
| Uwe Kleine-König | 1 | 0.06% | 1 | 1.85% |
| Andrew Lunn | 1 | 0.06% | 1 | 1.85% |
| Total | 1596 | 54 |
// SPDX-License-Identifier: GPL-2.0-only /* * lp5523.c - LP5523, LP55231 LED Driver * * Copyright (C) 2010 Nokia Corporation * Copyright (C) 2012 Texas Instruments * * Contact: Samu Onkalo <samu.p.onkalo@nokia.com> * Milo(Woogyom) Kim <milo.kim@ti.com> */ #include <linux/cleanup.h> #include <linux/delay.h> #include <linux/firmware.h> #include <linux/i2c.h> #include <linux/leds.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/of.h> #include <linux/platform_data/leds-lp55xx.h> #include <linux/slab.h> #include "leds-lp55xx-common.h" /* Memory is used like this: * 0x00 engine 1 program * 0x10 engine 2 program * 0x20 engine 3 program * 0x30 engine 1 muxing info * 0x40 engine 2 muxing info * 0x50 engine 3 muxing info */ #define LP5523_PAGES_PER_ENGINE 1 #define LP5523_MAX_LEDS 9 /* Registers */ #define LP5523_REG_ENABLE 0x00 #define LP5523_REG_OP_MODE 0x01 #define LP5523_REG_ENABLE_LEDS_MSB 0x04 #define LP5523_REG_ENABLE_LEDS_LSB 0x05 #define LP5523_REG_LED_CTRL_BASE 0x06 #define LP5523_REG_LED_PWM_BASE 0x16 #define LP5523_REG_LED_CURRENT_BASE 0x26 #define LP5523_REG_CONFIG 0x36 #define LP5523_REG_STATUS 0x3A #define LP5523_ENGINE_BUSY BIT(4) #define LP5523_REG_RESET 0x3D #define LP5523_REG_LED_TEST_CTRL 0x41 #define LP5523_REG_LED_TEST_ADC 0x42 #define LP5523_REG_MASTER_FADER_BASE 0x48 #define LP5523_REG_CH1_PROG_START 0x4C #define LP5523_REG_CH2_PROG_START 0x4D #define LP5523_REG_CH3_PROG_START 0x4E #define LP5523_REG_PROG_PAGE_SEL 0x4F #define LP5523_REG_PROG_MEM 0x50 /* Bit description in registers */ #define LP5523_ENABLE 0x40 #define LP5523_AUTO_INC 0x40 #define LP5523_PWR_SAVE 0x20 #define LP5523_PWM_PWR_SAVE 0x04 #define LP5523_CP_MODE_MASK 0x18 #define LP5523_CP_MODE_SHIFT 3 #define LP5523_AUTO_CLK 0x02 #define LP5523_DEFAULT_CONFIG \ (LP5523_AUTO_INC | LP5523_PWR_SAVE | LP5523_AUTO_CLK | LP5523_PWM_PWR_SAVE) #define LP5523_EN_LEDTEST 0x80 #define LP5523_LEDTEST_DONE 0x80 #define LP5523_RESET 0xFF #define LP5523_ADC_SHORTCIRC_LIM 80 #define LP5523_EXT_CLK_USED 0x08 #define LP5523_ENG_STATUS_MASK 0x07 static int lp5523_init_program_engine(struct lp55xx_chip *chip); static int lp5523_post_init_device(struct lp55xx_chip *chip) { int ret; int val; ret = lp55xx_write(chip, LP5523_REG_ENABLE, LP5523_ENABLE); if (ret) return ret; /* Chip startup time is 500 us, 1 - 2 ms gives some margin */ usleep_range(1000, 2000); val = LP5523_DEFAULT_CONFIG; val |= (chip->pdata->charge_pump_mode << LP5523_CP_MODE_SHIFT) & LP5523_CP_MODE_MASK; ret = lp55xx_write(chip, LP5523_REG_CONFIG, val); if (ret) return ret; /* turn on all leds */ ret = lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_MSB, 0x01); if (ret) return ret; ret = lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_LSB, 0xff); if (ret) return ret; return lp5523_init_program_engine(chip); } static void lp5523_run_engine(struct lp55xx_chip *chip, bool start) { /* stop engine */ if (!start) { lp55xx_stop_engine(chip); lp55xx_turn_off_channels(chip); return; } lp55xx_run_engine_common(chip); } static int lp5523_init_program_engine(struct lp55xx_chip *chip) { int i; int j; int ret; u8 status; /* one pattern per engine setting LED MUX start and stop addresses */ static const u8 pattern[][LP55xx_BYTES_PER_PAGE] = { { 0x9c, 0x30, 0x9c, 0xb0, 0x9d, 0x80, 0xd8, 0x00, 0}, { 0x9c, 0x40, 0x9c, 0xc0, 0x9d, 0x80, 0xd8, 0x00, 0}, { 0x9c, 0x50, 0x9c, 0xd0, 0x9d, 0x80, 0xd8, 0x00, 0}, }; /* hardcode 32 bytes of memory for each engine from program memory */ ret = lp55xx_write(chip, LP5523_REG_CH1_PROG_START, 0x00); if (ret) return ret; ret = lp55xx_write(chip, LP5523_REG_CH2_PROG_START, 0x10); if (ret) return ret; ret = lp55xx_write(chip, LP5523_REG_CH3_PROG_START, 0x20); if (ret) return ret; /* write LED MUX address space for each engine */ for (i = LP55XX_ENGINE_1; i <= LP55XX_ENGINE_3; i++) { chip->engine_idx = i; lp55xx_load_engine(chip); for (j = 0; j < LP55xx_BYTES_PER_PAGE; j++) { ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + j, pattern[i - 1][j]); if (ret) goto out; } } lp5523_run_engine(chip, true); /* Let the programs run for couple of ms and check the engine status */ usleep_range(3000, 6000); ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); if (ret) goto out; status &= LP5523_ENG_STATUS_MASK; if (status != LP5523_ENG_STATUS_MASK) { dev_err(&chip->cl->dev, "could not configure LED engine, status = 0x%.2x\n", status); ret = -1; } out: lp55xx_stop_all_engine(chip); return ret; } static ssize_t lp5523_selftest(struct device *dev, struct device_attribute *attr, char *buf) { struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); struct lp55xx_chip *chip = led->chip; struct lp55xx_platform_data *pdata = chip->pdata; int ret, pos = 0; u8 status, adc, vdd, i; guard(mutex)(&chip->lock); ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); if (ret < 0) return sysfs_emit(buf, "FAIL\n"); /* Check that ext clock is really in use if requested */ if (pdata->clock_mode == LP55XX_CLOCK_EXT) { if ((status & LP5523_EXT_CLK_USED) == 0) return sysfs_emit(buf, "FAIL\n"); } /* Measure VDD (i.e. VBAT) first (channel 16 corresponds to VDD) */ lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL, LP5523_EN_LEDTEST | 16); usleep_range(3000, 6000); /* ADC conversion time is typically 2.7 ms */ ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); if (ret < 0) return sysfs_emit(buf, "FAIL\n"); if (!(status & LP5523_LEDTEST_DONE)) usleep_range(3000, 6000); /* Was not ready. Wait little bit */ ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &vdd); if (ret < 0) return sysfs_emit(buf, "FAIL\n"); vdd--; /* There may be some fluctuation in measurement */ for (i = 0; i < pdata->num_channels; i++) { /* Skip disabled channels */ if (pdata->led_config[i].led_current == 0) continue; /* Set default current */ lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + led->chan_nr, pdata->led_config[i].led_current); lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + led->chan_nr, 0xff); /* let current stabilize 2 - 4ms before measurements start */ usleep_range(2000, 4000); lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL, LP5523_EN_LEDTEST | led->chan_nr); /* ADC conversion time is 2.7 ms typically */ usleep_range(3000, 6000); ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); if (ret < 0) return sysfs_emit(buf, "FAIL\n"); if (!(status & LP5523_LEDTEST_DONE)) usleep_range(3000, 6000); /* Was not ready. Wait. */ ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &adc); if (ret < 0) return sysfs_emit(buf, "FAIL\n"); if (adc >= vdd || adc < LP5523_ADC_SHORTCIRC_LIM) pos += sysfs_emit_at(buf, pos, "LED %d FAIL\n", led->chan_nr); lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + led->chan_nr, 0x00); /* Restore current */ lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + led->chan_nr, led->led_current); led++; } return pos == 0 ? sysfs_emit(buf, "OK\n") : pos; } LP55XX_DEV_ATTR_ENGINE_MODE(1); LP55XX_DEV_ATTR_ENGINE_MODE(2); LP55XX_DEV_ATTR_ENGINE_MODE(3); LP55XX_DEV_ATTR_ENGINE_LEDS(1); LP55XX_DEV_ATTR_ENGINE_LEDS(2); LP55XX_DEV_ATTR_ENGINE_LEDS(3); LP55XX_DEV_ATTR_ENGINE_LOAD(1); LP55XX_DEV_ATTR_ENGINE_LOAD(2); LP55XX_DEV_ATTR_ENGINE_LOAD(3); static LP55XX_DEV_ATTR_RO(selftest, lp5523_selftest); LP55XX_DEV_ATTR_MASTER_FADER(1); LP55XX_DEV_ATTR_MASTER_FADER(2); LP55XX_DEV_ATTR_MASTER_FADER(3); static LP55XX_DEV_ATTR_RW(master_fader_leds, lp55xx_show_master_fader_leds, lp55xx_store_master_fader_leds); static struct attribute *lp5523_attributes[] = { &dev_attr_engine1_mode.attr, &dev_attr_engine2_mode.attr, &dev_attr_engine3_mode.attr, &dev_attr_engine1_load.attr, &dev_attr_engine2_load.attr, &dev_attr_engine3_load.attr, &dev_attr_engine1_leds.attr, &dev_attr_engine2_leds.attr, &dev_attr_engine3_leds.attr, &dev_attr_selftest.attr, &dev_attr_master_fader1.attr, &dev_attr_master_fader2.attr, &dev_attr_master_fader3.attr, &dev_attr_master_fader_leds.attr, NULL, }; static const struct attribute_group lp5523_group = { .attrs = lp5523_attributes, }; /* Chip specific configurations */ static struct lp55xx_device_config lp5523_cfg = { .reg_op_mode = { .addr = LP5523_REG_OP_MODE, }, .reg_exec = { .addr = LP5523_REG_ENABLE, }, .engine_busy = { .addr = LP5523_REG_STATUS, .mask = LP5523_ENGINE_BUSY, }, .reset = { .addr = LP5523_REG_RESET, .val = LP5523_RESET, }, .enable = { .addr = LP5523_REG_ENABLE, .val = LP5523_ENABLE, }, .prog_mem_base = { .addr = LP5523_REG_PROG_MEM, }, .reg_led_pwm_base = { .addr = LP5523_REG_LED_PWM_BASE, }, .reg_led_current_base = { .addr = LP5523_REG_LED_CURRENT_BASE, }, .reg_master_fader_base = { .addr = LP5523_REG_MASTER_FADER_BASE, }, .reg_led_ctrl_base = { .addr = LP5523_REG_LED_CTRL_BASE, }, .pages_per_engine = LP5523_PAGES_PER_ENGINE, .max_channel = LP5523_MAX_LEDS, .post_init_device = lp5523_post_init_device, .brightness_fn = lp55xx_led_brightness, .multicolor_brightness_fn = lp55xx_multicolor_brightness, .set_led_current = lp55xx_set_led_current, .firmware_cb = lp55xx_firmware_loaded_cb, .run_engine = lp5523_run_engine, .dev_attr_group = &lp5523_group, }; static const struct i2c_device_id lp5523_id[] = { { "lp5523", .driver_data = (kernel_ulong_t)&lp5523_cfg, }, { "lp55231", .driver_data = (kernel_ulong_t)&lp5523_cfg, }, { } }; MODULE_DEVICE_TABLE(i2c, lp5523_id); static const struct of_device_id of_lp5523_leds_match[] = { { .compatible = "national,lp5523", .data = &lp5523_cfg, }, { .compatible = "ti,lp55231", .data = &lp5523_cfg, }, {}, }; MODULE_DEVICE_TABLE(of, of_lp5523_leds_match); static struct i2c_driver lp5523_driver = { .driver = { .name = "lp5523x", .of_match_table = of_lp5523_leds_match, }, .probe = lp55xx_probe, .remove = lp55xx_remove, .id_table = lp5523_id, }; module_i2c_driver(lp5523_driver); MODULE_AUTHOR("Mathias Nyman <mathias.nyman@nokia.com>"); MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>"); MODULE_DESCRIPTION("LP5523 LED engine"); MODULE_LICENSE("GPL");
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