@@ -414,7 +414,7 @@ config LEDS_LP50XX
module will be called leds-lp50xx.
config LEDS_LP55XX_COMMON
- tristate "Common Driver for TI/National LP5521/5523/55231/5562/8501"
+ tristate "Common Driver for TI/National LP5521/5523/55231/5562/5569/8501"
depends on LEDS_CLASS
depends on LEDS_CLASS_MULTICOLOR
depends on OF
@@ -422,8 +422,8 @@ config LEDS_LP55XX_COMMON
select FW_LOADER
select FW_LOADER_USER_HELPER
help
- This option supports common operations for LP5521/5523/55231/5562/8501
- devices.
+ This option supports common operations for LP5521/5523/55231/5562/5569/
+ 8501 devices.
config LEDS_LP5521
tristate "LED Support for N.S. LP5521 LED driver chip"
@@ -456,6 +456,16 @@ config LEDS_LP5562
Driver provides direct control via LED class and interface for
programming the engines.
+config LEDS_LP5569
+ tristate "LED Support for TI LP5569 LED driver chip"
+ depends on LEDS_CLASS && I2C
+ depends on LEDS_LP55XX_COMMON
+ help
+ If you say yes here you get support for TI LP5569 LED driver.
+ It is 9 channels chip with programmable engines.
+ Driver provides direct control via LED class and interface for
+ programming the engines.
+
config LEDS_LP8501
tristate "LED Support for TI LP8501 LED driver chip"
depends on LEDS_CLASS && I2C
@@ -51,6 +51,7 @@ obj-$(CONFIG_LEDS_LP50XX) += leds-lp50xx.o
obj-$(CONFIG_LEDS_LP5521) += leds-lp5521.o
obj-$(CONFIG_LEDS_LP5523) += leds-lp5523.o
obj-$(CONFIG_LEDS_LP5562) += leds-lp5562.o
+obj-$(CONFIG_LEDS_LP5569) += leds-lp5569.o
obj-$(CONFIG_LEDS_LP55XX_COMMON) += leds-lp55xx-common.o
obj-$(CONFIG_LEDS_LP8501) += leds-lp8501.o
obj-$(CONFIG_LEDS_LP8788) += leds-lp8788.o
new file mode 100644
@@ -0,0 +1,542 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2024 Christian Marangi <ansuelsmth@gmail.com>
+ */
+
+#include <linux/bitfield.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 <dt-bindings/leds/leds-lp55xx.h>
+
+#include "leds-lp55xx-common.h"
+
+#define LP5569_MAX_LEDS 9
+
+/* Memory is used like this:
+ * 0x00 engine 1 program (4 pages)
+ * 0x40 engine 2 program (4 pages)
+ * 0x80 engine 3 program (4 pages)
+ * 0xc0 engine 1 muxing info (1 page)
+ * 0xd0 engine 2 muxing info (1 page)
+ * 0xe0 engine 3 muxing info (1 page)
+ */
+#define LP5569_PAGES_PER_ENGINE 4
+
+#define LP5569_REG_ENABLE 0x00
+#define LP5569_ENABLE BIT(6)
+
+#define LP5569_REG_EXEC_CTRL 0x01
+#define LP5569_MODE_ENG_SHIFT 2
+
+#define LP5569_REG_OP_MODE 0x02
+#define LP5569_EXEC_ENG_SHIFT 2
+
+#define LP5569_REG_ENABLE_LEDS_MSB 0x04
+#define LP5569_REG_ENABLE_LEDS_LSB 0x05
+#define LP5569_REG_LED_CTRL_BASE 0x07
+#define LP5569_FADER_MAPPING_MASK GENMASK(7, 5)
+#define LP5569_REG_LED_PWM_BASE 0x16
+#define LP5569_REG_LED_CURRENT_BASE 0x22
+#define LP5569_REG_MISC 0x2F
+#define LP5569_AUTO_INC BIT(6)
+#define LP5569_PWR_SAVE BIT(5)
+#define LP5569_CP_MODE_MASK GENMASK(4, 3)
+#define LP5569_PWM_PWR_SAVE BIT(2)
+#define LP5569_INTERNAL_CLK BIT(0)
+#define LP5569_REG_MISC2 0x33
+#define LP5569_LED_SHORT_TEST BIT(4)
+#define LP5569_LED_OPEN_TEST BIT(3)
+#define LP5569_REG_STATUS 0x3C
+#define LP5569_MASK_BUSY BIT(7)
+#define LP5569_STARTUP_BUSY BIT(6)
+#define LP5569_ENGINE_BUSY BIT(5)
+#define LP5569_ENGINE1_INT BIT(2)
+#define LP5569_ENGINE2_INT BIT(1)
+#define LP5569_ENGINE3_INT BIT(0)
+#define LP5569_ENG_STATUS_MASK (LP5569_ENGINE1_INT | LP5569_ENGINE2_INT | \
+ LP5569_ENGINE3_INT)
+#define LP5569_REG_IO_CONTROL 0x3D
+#define LP5569_CLK_OUTPUT BIT(3)
+#define LP5569_REG_RESET 0x3F
+#define LP5569_RESET 0xFF
+#define LP5569_REG_MASTER_FADER_BASE 0x46
+#define LP5569_REG_CH1_PROG_START 0x4B
+#define LP5569_REG_CH2_PROG_START 0x4C
+#define LP5569_REG_CH3_PROG_START 0x4D
+#define LP5569_REG_PROG_PAGE_SEL 0x4F
+#define LP5569_REG_PROG_MEM 0x50
+#define LP5569_REG_LED_FAULT1 0x81
+#define LP5569_LED_FAULT8 BIT(0)
+#define LP5569_REG_LED_FAULT2 0x82
+#define LP5569_LED_FAULT7 BIT(7)
+#define LP5569_LED_FAULT6 BIT(6)
+#define LP5569_LED_FAULT5 BIT(5)
+#define LP5569_LED_FAULT4 BIT(4)
+#define LP5569_LED_FAULT3 BIT(3)
+#define LP5569_LED_FAULT2 BIT(2)
+#define LP5569_LED_FAULT1 BIT(1)
+#define LP5569_LED_FAULT0 BIT(0)
+
+#define LP5569_ENG1_PROG_ADDR 0x0
+#define LP5569_ENG2_PROG_ADDR 0x40
+#define LP5569_ENG3_PROG_ADDR 0x80
+#define LP5569_ENG1_MUX_ADDR 0xc0
+#define LP5569_ENG2_MUX_ADDR 0xd0
+#define LP5569_ENG3_MUX_ADDR 0xe0
+
+#define LEDn_STATUS_FAULT(n, status) ((status) >> (n) & BIT(0))
+
+#define LP5569_DEFAULT_CONFIG \
+ (LP5569_AUTO_INC | LP5569_PWR_SAVE | LP5569_PWM_PWR_SAVE)
+
+static void lp5569_run_engine(struct lp55xx_chip *chip, bool start)
+{
+ if (!start) {
+ lp55xx_stop_engine(chip);
+ lp55xx_turn_off_channels(chip);
+ return;
+ }
+
+ lp55xx_run_engine_common(chip);
+}
+
+static int lp5569_init_program_engine(struct lp55xx_chip *chip)
+{
+ int i;
+ int j;
+ int ret;
+ u8 status;
+ /* Precompiled pattern per ENGINE setting LED MUX start and stop addresses */
+ static const u8 pattern[][LP55xx_BYTES_PER_PAGE] = {
+ { 0x9c, LP5569_ENG1_MUX_ADDR, 0x9c, 0xb0, 0x9d, 0x80, 0xd8, 0x00, 0},
+ { 0x9c, LP5569_ENG2_MUX_ADDR, 0x9c, 0xc0, 0x9d, 0x80, 0xd8, 0x00, 0},
+ { 0x9c, LP5569_ENG3_MUX_ADDR, 0x9c, 0xd0, 0x9d, 0x80, 0xd8, 0x00, 0},
+ };
+
+ /* Setup each ENGINE program start address */
+ ret = lp55xx_write(chip, LP5569_REG_CH1_PROG_START, LP5569_ENG1_PROG_ADDR);
+ if (ret)
+ return ret;
+
+ ret = lp55xx_write(chip, LP5569_REG_CH2_PROG_START, LP5569_ENG2_PROG_ADDR);
+ if (ret)
+ return ret;
+
+ ret = lp55xx_write(chip, LP5569_REG_CH3_PROG_START, LP5569_ENG3_PROG_ADDR);
+ if (ret)
+ return ret;
+
+ /* Write precompiled pattern for 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, LP5569_REG_PROG_MEM + j,
+ pattern[i - 1][j]);
+ if (ret)
+ goto out;
+ }
+ }
+
+ lp5569_run_engine(chip, true);
+
+ /* Let the programs run for couple of ms and check the engine status */
+ usleep_range(3000, 6000);
+ lp55xx_read(chip, LP5569_REG_STATUS, &status);
+ status = FIELD_GET(LP5569_ENG_STATUS_MASK, status);
+
+ if (status != LP5569_ENG_STATUS_MASK) {
+ dev_err(&chip->cl->dev,
+ "could not configure LED engine, status = 0x%.2x\n",
+ status);
+ ret = -EINVAL;
+ }
+
+out:
+ lp55xx_stop_all_engine(chip);
+ return ret;
+}
+
+static int lp5569_post_init_device(struct lp55xx_chip *chip)
+{
+ int ret;
+ int val;
+
+ ret = lp55xx_write(chip, LP5569_REG_ENABLE, LP5569_ENABLE);
+ if (ret)
+ return ret;
+
+ /* Chip startup time is 500 us, 1 - 2 ms gives some margin */
+ usleep_range(1000, 2000);
+
+ val = LP5569_DEFAULT_CONFIG;
+ val |= FIELD_PREP(LP5569_CP_MODE_MASK, chip->pdata->charge_pump_mode);
+
+ if (chip->pdata->clock_mode == LP55XX_CLOCK_INT) {
+ ret = lp55xx_update_bits(chip, LP5569_REG_IO_CONTROL,
+ LP5569_CLK_OUTPUT,
+ LP5569_CLK_OUTPUT);
+ if (ret)
+ return ret;
+
+ val |= LP5569_INTERNAL_CLK;
+ }
+
+ ret = lp55xx_write(chip, LP5569_REG_MISC, val);
+ if (ret)
+ return ret;
+
+ return lp5569_init_program_engine(chip);
+}
+
+static ssize_t lp5569_led_open_test(struct lp55xx_led *led, char *buf)
+{
+ struct lp55xx_chip *chip = led->chip;
+ struct lp55xx_platform_data *pdata = chip->pdata;
+ bool leds_fault[LP5569_MAX_LEDS];
+ struct lp55xx_led *led_tmp = led;
+ int i, ret, pos = 0;
+ u8 status;
+
+ /* Set in STANDBY state */
+ ret = lp55xx_write(chip, LP5569_REG_ENABLE, 0);
+ if (ret)
+ goto exit;
+
+ /* Wait 1ms for device to enter STANDBY state */
+ usleep_range(1000, 2000);
+
+ /* Set Charge Pump to 1.5x */
+ ret = lp55xx_update_bits(chip, LP5569_REG_MISC,
+ FIELD_PREP(LP5569_CP_MODE_MASK, LP55XX_CP_BOOST),
+ LP5569_CP_MODE_MASK);
+ if (ret)
+ goto exit;
+
+ /* Enable LED Open Test */
+ ret = lp55xx_update_bits(chip, LP5569_REG_MISC2, LP5569_LED_OPEN_TEST,
+ LP5569_LED_OPEN_TEST);
+ if (ret)
+ goto exit;
+
+ /* Put Device in NORMAL state */
+ ret = lp55xx_write(chip, LP5569_REG_ENABLE, LP5569_ENABLE);
+ if (ret)
+ goto exit;
+
+ /* Wait 500 us for device to enter NORMAL state */
+ usleep_range(500, 750);
+
+ /* Enable LED and set to 100% brightness */
+ for (i = 0; i < pdata->num_channels; i++) {
+ ret = lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led_tmp->chan_nr,
+ LED_FULL);
+ if (ret)
+ goto exit;
+
+ led_tmp++;
+ }
+
+ /* Wait 500 us for device to fill status regs */
+ usleep_range(500, 750);
+
+ /* Parse status led fault 1 regs */
+ ret = lp55xx_read(chip, LP5569_REG_LED_FAULT1, &status);
+ if (ret < 0)
+ goto exit;
+
+ for (i = 0; i < 8; i++)
+ leds_fault[i] = !!((status >> i) & 0x1);
+
+ /* Parse status led fault 2 regs */
+ ret = lp55xx_read(chip, LP5569_REG_LED_FAULT2, &status);
+ if (ret < 0)
+ goto exit;
+
+ for (i = 0; i < 1; i++)
+ leds_fault[i + 8] = !!((status >> i) & 0x1);
+
+ /* Report LED fault */
+ led_tmp = led;
+ for (i = 0; i < pdata->num_channels; i++) {
+ if (leds_fault[led_tmp->chan_nr])
+ pos += sprintf(buf + pos, "LED %d OPEN FAIL\n",
+ led_tmp->chan_nr);
+
+ led_tmp++;
+ }
+
+ ret = pos;
+
+exit:
+ /* Disable LED Open Test */
+ lp55xx_update_bits(chip, LP5569_REG_MISC2, LP5569_LED_OPEN_TEST,
+ 0);
+
+ led_tmp = led;
+ for (i = 0; i < pdata->num_channels; i++) {
+ lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led_tmp->chan_nr,
+ 0);
+
+ led_tmp++;
+ }
+
+ return ret;
+}
+
+static ssize_t lp5569_led_short_test(struct lp55xx_led *led, char *buf)
+{
+ struct lp55xx_chip *chip = led->chip;
+ struct lp55xx_platform_data *pdata = chip->pdata;
+ bool leds_fault[LP5569_MAX_LEDS];
+ struct lp55xx_led *led_tmp = led;
+ int i, ret, pos = 0;
+ u8 status;
+
+ /* Set in STANDBY state */
+ ret = lp55xx_write(chip, LP5569_REG_ENABLE, 0);
+ if (ret)
+ goto exit;
+
+ /* Wait 1ms for device to enter STANDBY state */
+ usleep_range(1000, 2000);
+
+ /* Set Charge Pump to 1x */
+ ret = lp55xx_update_bits(chip, LP5569_REG_MISC,
+ FIELD_PREP(LP5569_CP_MODE_MASK, LP55XX_CP_BYPASS),
+ LP5569_CP_MODE_MASK);
+ if (ret)
+ goto exit;
+
+ /* Enable LED and set to 100% brightness and current to 100% (25.5mA) */
+ for (i = 0; i < pdata->num_channels; i++) {
+ ret = lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led_tmp->chan_nr,
+ LED_FULL);
+ if (ret)
+ goto exit;
+
+ ret = lp55xx_write(chip, LP5569_REG_LED_CURRENT_BASE + led_tmp->chan_nr,
+ LED_FULL);
+ if (ret)
+ goto exit;
+
+ led_tmp++;
+ }
+
+ /* Put Device in NORMAL state */
+ ret = lp55xx_write(chip, LP5569_REG_ENABLE, LP5569_ENABLE);
+ if (ret)
+ goto exit;
+
+ /* Wait 500 us for device to enter NORMAL state */
+ usleep_range(500, 750);
+
+ /* Enable LED Shorted Test */
+ ret = lp55xx_update_bits(chip, LP5569_REG_MISC2, LP5569_LED_OPEN_TEST,
+ LP5569_LED_SHORT_TEST);
+ if (ret)
+ goto exit;
+
+ /* Wait 500 us for device to fill status regs */
+ usleep_range(500, 750);
+
+ /* Parse status led fault 1 regs */
+ ret = lp55xx_read(chip, LP5569_REG_LED_FAULT1, &status);
+ if (ret < 0)
+ goto exit;
+
+ for (i = 0; i < 8; i++)
+ leds_fault[i] = !!LEDn_STATUS_FAULT(i, status);
+
+ /* Parse status led fault 2 regs */
+ ret = lp55xx_read(chip, LP5569_REG_LED_FAULT2, &status);
+ if (ret < 0)
+ goto exit;
+
+ for (i = 0; i < 1; i++)
+ leds_fault[i + 8] = !!LEDn_STATUS_FAULT(i, status);
+
+ /* Report LED fault */
+ led_tmp = led;
+ for (i = 0; i < pdata->num_channels; i++) {
+ if (leds_fault[led_tmp->chan_nr])
+ pos += sprintf(buf + pos, "LED %d SHORTED FAIL\n",
+ led_tmp->chan_nr);
+
+ led_tmp++;
+ }
+
+ ret = pos;
+
+exit:
+ /* Disable LED Shorted Test */
+ lp55xx_update_bits(chip, LP5569_REG_MISC2, LP5569_LED_SHORT_TEST,
+ 0);
+
+ led_tmp = led;
+ for (i = 0; i < pdata->num_channels; i++) {
+ lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led_tmp->chan_nr,
+ 0);
+
+ led_tmp++;
+ }
+
+ return ret;
+}
+
+static ssize_t lp5569_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;
+ int i, pos = 0;
+
+ mutex_lock(&chip->lock);
+
+ /* Test LED Open */
+ pos = lp5569_led_open_test(led, buf);
+ if (pos < 0)
+ goto fail;
+
+ /* Test LED Shorted */
+ pos = lp5569_led_short_test(led, buf);
+ if (pos < 0)
+ goto fail;
+
+ for (i = 0; i < chip->pdata->num_channels; i++) {
+ /* Restore current */
+ lp55xx_write(chip, LP5569_REG_LED_CURRENT_BASE + led->chan_nr,
+ led->led_current);
+
+ /* Restore brightness */
+ lp55xx_write(chip, LP5569_REG_LED_PWM_BASE + led->chan_nr,
+ led->brightness);
+ led++;
+ }
+
+ if (pos == 0)
+ pos = sprintf(buf, "OK\n");
+ goto release_lock;
+fail:
+ pos = sprintf(buf, "FAIL\n");
+
+release_lock:
+ mutex_unlock(&chip->lock);
+
+ return 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, lp5569_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 *lp5569_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 lp5569_group = {
+ .attrs = lp5569_attributes,
+};
+
+/* Chip specific configurations */
+static struct lp55xx_device_config lp5569_cfg = {
+ .reg_op_mode = {
+ .addr = LP5569_REG_OP_MODE,
+ .shift = LP5569_MODE_ENG_SHIFT,
+ },
+ .reg_exec = {
+ .addr = LP5569_REG_EXEC_CTRL,
+ .shift = LP5569_EXEC_ENG_SHIFT,
+ },
+ .reset = {
+ .addr = LP5569_REG_RESET,
+ .val = LP5569_RESET,
+ },
+ .enable = {
+ .addr = LP5569_REG_ENABLE,
+ .val = LP5569_ENABLE,
+ },
+ .prog_mem_base = {
+ .addr = LP5569_REG_PROG_MEM,
+ },
+ .reg_led_pwm_base = {
+ .addr = LP5569_REG_LED_PWM_BASE,
+ },
+ .reg_led_current_base = {
+ .addr = LP5569_REG_LED_CURRENT_BASE,
+ },
+ .pages_per_engine = LP5569_PAGES_PER_ENGINE,
+ .max_channel = LP5569_MAX_LEDS,
+ .post_init_device = lp5569_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 = lp5569_run_engine,
+ .dev_attr_group = &lp5569_group,
+};
+
+static const struct i2c_device_id lp5569_id[] = {
+ { "lp5569", .driver_data = (kernel_ulong_t)&lp5569_cfg, },
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, lp5569_id);
+
+static const struct of_device_id of_lp5569_leds_match[] = {
+ { .compatible = "ti,lp5569", .data = &lp5569_cfg, },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, of_lp5569_leds_match);
+
+static struct i2c_driver lp5569_driver = {
+ .driver = {
+ .name = "lp5569x",
+ .of_match_table = of_lp5569_leds_match,
+ },
+ .probe = lp55xx_probe,
+ .remove = lp55xx_remove,
+ .id_table = lp5569_id,
+};
+
+module_i2c_driver(lp5569_driver);
+
+MODULE_AUTHOR("Christian Marangi <ansuelsmth@gmail.com>");
+MODULE_DESCRIPTION("LP5569 LED engine");
+MODULE_LICENSE("GPL");
Add support for Texas Instruments LP5569 LED driver. Texas Instruments LP5569 is 9 channels chip with programmable engines. It almost a copy of LP5523 with fundamental changes to regs order and regs content. Has difference in how the clock is handled and doesn't support detecting clock time automatically, different handling for selftest and different scheme for the status regs. LED chip supports ENGINE and MUX to group LED and run precompiled code with magic values to run patterns. This is loaded via the sysfs entry and it's passed as a string of ASCII HEX char. One some devices using this LED Controller (a NBG7815 Router) it was found loading big precompiled pattern with up to 96 bytes of code. To have support for this "extended" scenario, hardcode each engine to support 4 pages of precompiled pattern (128 bytes of code) and 1 page for each MUX. This gives plenty of space for any kind precompiled pattern keeping simple logic for page handling of each engine and mux. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> --- drivers/leds/Kconfig | 16 +- drivers/leds/Makefile | 1 + drivers/leds/leds-lp5569.c | 542 +++++++++++++++++++++++++++++++++++++ 3 files changed, 556 insertions(+), 3 deletions(-) create mode 100644 drivers/leds/leds-lp5569.c