* [PATCH v7 2/5] leds: add TI/National Semiconductor LP5812 LED Driver
2025-04-22 19:01 [PATCH v7 0/5] leds: add new LED driver for TI LP5812 Nam Tran
2025-04-22 19:01 ` [PATCH v7 1/5] dt-bindings: leds: add TI/National Semiconductor LP5812 LED Driver Nam Tran
@ 2025-04-22 19:01 ` Nam Tran
2025-04-22 19:01 ` [PATCH v7 3/5] docs: ABI: Document LP5812 LED sysfs interfaces Nam Tran
` (3 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: Nam Tran @ 2025-04-22 19:01 UTC (permalink / raw)
To: pavel, lee, christophe.jaillet, krzk+dt, robh, conor+dt, corbet
Cc: devicetree, linux-leds, linux-kernel, Nam Tran
The LP5812 is a 4×3 matrix RGB LED driver
with an autonomous animation engine
and time-cross-multiplexing (TCM) support for up to 12 LEDs.
Each LED can be configured through the related registers
to realize vivid and fancy lighting effects.
Signed-off-by: Nam Tran <trannamatk@gmail.com>
---
MAINTAINERS | 4 +
drivers/leds/Kconfig | 16 +
drivers/leds/Makefile | 1 +
drivers/leds/leds-lp5812.c | 2736 ++++++++++++++++++++++++++++++++++++
drivers/leds/leds-lp5812.h | 348 +++++
5 files changed, 3105 insertions(+)
create mode 100644 drivers/leds/leds-lp5812.c
create mode 100644 drivers/leds/leds-lp5812.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 434c9afde80b..0b4eb9f3a94e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -23995,6 +23995,10 @@ M: Nam Tran <trannamatk@gmail.com>
L: linux-leds@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/leds/ti,lp5812.yaml
+F: drivers/leds/Kconfig
+F: drivers/leds/Makefile
+F: drivers/leds/leds-lp5812.c
+F: drivers/leds/leds-lp5812.h
TEXAS INSTRUMENTS' LB8864 LED BACKLIGHT DRIVER
M: Alexander Sverdlin <alexander.sverdlin@siemens.com>
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index a104cbb0a001..386aa7d68296 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -483,6 +483,22 @@ config LEDS_LP5569
Driver provides direct control via LED class and interface for
programming the engines.
+config LEDS_LP5812
+ tristate "Enable LP5812 support LED matrix 4x3"
+ depends on LEDS_CLASS && I2C
+ depends on LEDS_CLASS_MULTICOLOR
+ help
+ If you say Y here you get support for TI LP5812 LED driver.
+
+ The LP5812 is an I2C-based RGB LED driver that supports a 4x3 LED matrix.
+ It provides independent brightness control and color mixing for each LED.
+ This driver integrates with the Linux LED framework and LED multicolor class.
+
+ To compile this driver as a module, choose M here: the
+ module will be called leds-lp5812.
+
+ If unsure, say N.
+
config LEDS_LP8501
tristate "LED Support for TI LP8501 LED driver chip"
depends on LEDS_CLASS && I2C
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 2f170d69dcbf..77f9cec9f82b 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -54,6 +54,7 @@ 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-$(CONFIG_LEDS_LP5812) += leds-lp5812.o
obj-$(CONFIG_LEDS_LP8501) += leds-lp8501.o
obj-$(CONFIG_LEDS_LP8788) += leds-lp8788.o
obj-$(CONFIG_LEDS_LP8860) += leds-lp8860.o
diff --git a/drivers/leds/leds-lp5812.c b/drivers/leds/leds-lp5812.c
new file mode 100644
index 000000000000..2af866b870bf
--- /dev/null
+++ b/drivers/leds/leds-lp5812.c
@@ -0,0 +1,2736 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * LP5812 LED driver
+ *
+ * Copyright (C) 2025 Texas Instruments
+ *
+ * Author: Jared Zhou <jared-zhou@ti.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <linux/string.h>
+
+#include "leds-lp5812.h"
+
+#define to_lp5812_led(x) container_of(x, struct lp5812_led, kobj)
+#define to_anim_engine_unit(x) container_of(x, struct anim_engine_unit, kobj)
+
+static int lp5812_init_dev_config(struct lp5812_chip *chip,
+ const char *drive_mode, int rm_led_sysfs);
+
+static const struct drive_mode_led_map chip_leds_map[] = {
+ {
+ "direct_mode",
+ (const char *[]){LED0, LED1, LED2, LED3, NULL}
+ },
+ {
+ "tcmscan:1:0", /* tcm 1 scan; scan order 0 out0 */
+ (const char *[]){LED_A0, LED_A1, LED_A2, NULL}
+ },
+ {
+ "tcmscan:1:1", /* tcm 1 scan; scan order 0 out1 */
+ (const char *[]){LED_B0, LED_B1, LED_B2, NULL}
+ },
+ {
+ "tcmscan:1:2", /* tcm 1 scan; scan order 0 out2 */
+ (const char *[]){LED_C0, LED_C1, LED_C2, NULL}
+ },
+ {
+ "tcmscan:1:3", /* tcm 1 scan; scan order 0 out3 */
+ (const char *[]){LED_D0, LED_D1, LED_D2, NULL}
+ },
+ { /* tcm 2 scan, scan order 0 out0; scan order 1 out1 */
+ "tcmscan:2:0:1",
+ (const char *[]){LED_A0, LED_A1, LED_A2, LED_B0, LED_B1, LED_B2, NULL}
+ },
+ { /* tcm 2 scan, scan order 0 out0; scan order 1 out2 */
+ "tcmscan:2:0:2",
+ (const char *[]){LED_A0, LED_A1, LED_A2, LED_C0, LED_C1, LED_C2, NULL}
+ },
+ { /* tcm 2 scan, scan order 0 out0; scan order 1 out3 */
+ "tcmscan:2:0:3",
+ (const char *[]){LED_A0, LED_A1, LED_A2, LED_D0, LED_D1, LED_D2, NULL}
+ },
+ { /* tcm 2 scan, scan order 0 out1; scan order 1 out2 */
+ "tcmscan:2:1:2",
+ (const char *[]){LED_B0, LED_B1, LED_B2, LED_C0, LED_C1, LED_C2, NULL}
+ },
+ { /* tcm 2 scan, scan order 0 out1; scan order 1 out3 */
+ "tcmscan:2:1:3",
+ (const char *[]){LED_B0, LED_B1, LED_B2, LED_D0, LED_D1, LED_D2, NULL}
+ },
+ { /* tcm 2 scan, scan order 0 out2; scan order 1 out3 */
+ "tcmscan:2:2:3",
+ (const char *[]){LED_C0, LED_C1, LED_C2, LED_D0, LED_D1, LED_D2, NULL}
+ },
+ { /* tcm 3 scan, scan order 0 out0; scan order 1 out1;
+ * scan order 2 out2
+ */
+ "tcmscan:3:0:1:2",
+ (const char *[]){LED_A0, LED_A1, LED_A2, LED_B0, LED_B1, LED_B2,
+ LED_C0, LED_C1, LED_C2, NULL}
+ },
+ { /* tcm 3 scan, scan order 0 out0; scan order 1 out1;
+ * scan order 2 out3
+ */
+ "tcmscan:3:0:1:3",
+ (const char *[]){LED_A0, LED_A1, LED_A2, LED_B0, LED_B1, LED_B2,
+ LED_D0, LED_D1, LED_D2, NULL}
+ },
+ { /* tcm 3 scan, scan order 0 out0; scan order 1 out2;
+ * scan order 2 out3
+ */
+ "tcmscan:3:0:2:3",
+ (const char *[]){LED_A0, LED_A1, LED_A2, LED_C0, LED_C1, LED_C2,
+ LED_D0, LED_D1, LED_D2, NULL}
+ },
+ { /* tcm 4 scan, scan order 0 out0; scan order 1 out1;
+ * scan order 2 out2; scan order 3 out3
+ */
+ "tcmscan:4:0:1:2:3",
+ (const char *[]){LED_A0, LED_A1, LED_A2, LED_B0, LED_B1, LED_B2,
+ LED_C0, LED_C1, LED_C2, LED_D0, LED_D1, LED_D2, NULL}
+ },
+ { /* mix 1 scan, direct connect out0; scan order 0 out1 */
+ "mixscan:1:0:1",
+ (const char *[]){LED0, LED_B0, LED_B1, NULL}
+ },
+ { /* mix 1 scan, direct connect out0; scan order 0 out2 */
+ "mixscan:1:0:2",
+ (const char *[]){LED0, LED_C0, LED_C2, NULL}
+ },
+ { /* mix 1 scan, direct connect out0; scan order 0 out3 */
+ "mixscan:1:0:3",
+ (const char *[]){LED0, LED_D1, LED_D2, NULL}
+ },
+ { /* mix 1 scan, direct connect out1; scan order 0 out0 */
+ "mixscan:1:1:0",
+ (const char *[]){LED1, LED_A1, LED_A2, NULL}
+ },
+ { /* mix 1 scan, direct connect out1; scan order 0 out2 */
+ "mixscan:1:1:2",
+ (const char *[]){LED1, LED_C0, LED_C1, NULL}
+ },
+ { /* mix 1 scan, direct connect out1; scan order 0 out3 */
+ "mixscan:1:1:3",
+ (const char *[]){LED1, LED_D0, LED_D2, NULL}
+ },
+ { /* mix 1 scan, direct connect out2; scan order 0 out0 */
+ "mixscan:1:2:0",
+ (const char *[]){LED2, LED_A0, LED_A2, NULL}
+ },
+ { /* mix 1 scan, direct connect out2; scan order 0 out1 */
+ "mixscan:1:2:1",
+ (const char *[]){LED2, LED_B1, LED_B2, NULL}
+ },
+ { /* mix 1 scan, direct connect out2; scan order 0 out3 */
+ "mixscan:1:2:3",
+ (const char *[]){LED2, LED_D0, LED_D1, NULL}
+ },
+ { /* mix 1 scan, direct connect out3; scan order 0 out0 */
+ "mixscan:1:3:0",
+ (const char *[]){LED3, LED_A0, LED_A1, NULL}
+ },
+ { /* mix 1 scan, direct connect out3; scan order 0 out1 */
+ "mixscan:1:3:1",
+ (const char *[]){LED3, LED_B0, LED_B2, NULL}
+ },
+ { /* mix 1 scan, direct connect out3; scan order 0 out2 */
+ "mixscan:1:3:2",
+ (const char *[]){LED3, LED_C1, LED_C2, NULL}
+ },
+ { /* mix 2 scan, direct connect out0; scan order 0 out1;
+ * scan order 1 out2
+ */
+ "mixscan:2:0:1:2",
+ (const char *[]){LED0, LED_B0, LED_B1, LED_C0, LED_C2, NULL}
+ },
+ { /* mix 2 scan, direct connect out0; scan order 0 out1;
+ * scan order 1 out3
+ */
+ "mixscan:2:0:1:3",
+ (const char *[]){LED0, LED_B0, LED_B1, LED_D1, LED_D2, NULL}
+ },
+ { /* mix 2 scan, direct connect out0; scan order 0 out2;
+ * scan order 1 out3
+ */
+ "mixscan:2:0:2:3",
+ (const char *[]){LED0, LED_C0, LED_C2, LED_D1, LED_D2, NULL}
+ },
+ { /* mix 2 scan, direct connect out1; scan order 0 out0;
+ * scan order 1 out2
+ */
+ "mixscan:2:1:0:2",
+ (const char *[]){LED1, LED_A1, LED_A2, LED_C0, LED_C1, NULL}
+ },
+ { /* mix 2 scan, direct connect out1; scan order 0 out0;
+ * scan order 1 out3
+ */
+ "mixscan:2:1:0:3",
+ (const char *[]){LED1, LED_A1, LED_A2, LED_D0, LED_D2, NULL}
+ },
+ { /* mix 2 scan, direct connect out1; scan order 0 out2;
+ * scan order 1 out3
+ */
+ "mixscan:2:1:2:3",
+ (const char *[]){LED1, LED_C0, LED_C1, LED_D0, LED_D2, NULL}
+ },
+ { /* mix 2 scan, direct connect out2; scan order 0 out0;
+ * scan order 1 out1
+ */
+ "mixscan:2:2:0:1",
+ (const char *[]){LED2, LED_A0, LED_A2, LED_B1, LED_B2, NULL}
+ },
+ { /* mix 2 scan, direct connect out2; scan order 0 out0;
+ * scan order 1 out3
+ */
+ "mixscan:2:2:0:3",
+ (const char *[]){LED2, LED_A0, LED_A2, LED_D0, LED_D1, NULL}
+ },
+ { /* mix 2 scan, direct connect out2; scan order 0 out1;
+ * scan order 1 out3
+ */
+ "mixscan:2:2:1:3",
+ (const char *[]){LED2, LED_B1, LED_B2, LED_D0, LED_D1, NULL}
+ },
+ { /* mix 2 scan, direct connect out3; scan order 0 out0;
+ * scan order 1 out1
+ */
+ "mixscan:2:3:0:1",
+ (const char *[]){LED3, LED_A0, LED_A1, LED_B0, LED_B2, NULL}
+ },
+ { /* mix 2 scan, direct connect out3; scan order 0 out0;
+ * scan order 1 out2
+ */
+ "mixscan:2:3:0:2",
+ (const char *[]){LED3, LED_A0, LED_A1, LED_C1, LED_C2, NULL}
+ },
+ { /* mix 2 scan, direct connect out3; scan order 0 out1;
+ * scan order 1 out2
+ */
+ "mixscan:2:3:1:2",
+ (const char *[]){LED3, LED_B0, LED_B2, LED_C1, LED_C2, NULL}
+ },
+ { /* mix 3 scan, direct connect out0; scan order 0 out1;
+ * scan order 1 out2; scan order 2 out3
+ */
+ "mixscan:3:0:1:2:3",
+ (const char *[]){LED0, LED_B0, LED_B1, LED_C0, LED_C2, LED_D1,
+ LED_D2, NULL}
+ },
+ { /* mix 3 scan, direct connect out1; scan order 0 out0;
+ * scan order 1 out2; scan order 2 out3
+ */
+ "mixscan:3:1:0:2:3",
+ (const char *[]){LED1, LED_A1, LED_A2, LED_C0, LED_C1, LED_D0,
+ LED_D2, NULL}
+ },
+ { /* mix 3 scan, direct connect out2; scan order 0 out0;
+ * scan order 1 out1; scan order 2 out3
+ */
+ "mixscan:3:2:0:1:3",
+ (const char *[]){LED2, LED_A0, LED_A2, LED_B1, LED_B2, LED_D0,
+ LED_D1, NULL}
+ },
+ { /* mix 3 scan, direct connect out3; scan order 0 out0;
+ * scan order 1 out1; scan order 2 out2
+ */
+ "mixscan:3:3:0:1:2",
+ (const char *[]){LED3, LED_A0, LED_A1, LED_B0, LED_B2, LED_C1,
+ LED_C2, NULL}
+ }
+};
+
+static const char *led_name_array[MAX_LEDS] = {
+ LED0, LED1, LED2, LED3, LED_A0, LED_A1, LED_A2, LED_B0, LED_B1,
+ LED_B2, LED_C0, LED_C1, LED_C2, LED_D0, LED_D1, LED_D2
+};
+
+static u16 anim_base_addr_array[MAX_LEDS] = {
+ LED0_AUTO_BASE_ADRR, LED1_AUTO_BASE_ADRR, LED2_AUTO_BASE_ADRR,
+ LED3_AUTO_BASE_ADRR, LED_A0_AUTO_BASE_ADRR, LED_A1_AUTO_BASE_ADRR,
+ LED_A2_AUTO_BASE_ADRR, LED_B0_AUTO_BASE_ADRR, LED_B1_AUTO_BASE_ADRR,
+ LED_B2_AUTO_BASE_ADRR, LED_C0_AUTO_BASE_ADRR, LED_C1_AUTO_BASE_ADRR,
+ LED_C2_AUTO_BASE_ADRR, LED_D0_AUTO_BASE_ADRR, LED_D1_AUTO_BASE_ADRR,
+ LED_D2_AUTO_BASE_ADRR
+};
+
+static const char *time_name_array[MAX_TIME] = {
+ TIME0, TIME1, TIME2, TIME3, TIME4, TIME5, TIME6, TIME7, TIME8,
+ TIME9, TIME10, TIME11, TIME12, TIME13, TIME14, TIME15
+};
+
+static const char *led_playback_time_arr[MAX_TIME] = {
+ "0 time", "1 time", "2 times", "3 times", "4 times", "5 times",
+ "6 times", "7 times", "8 times", "9 times", "10 times", "11 times",
+ "12 times", "13 times", "14 times", "infinite times"
+};
+
+static const char *aeu_name_array[MAX_AEU] = {AEU1, AEU2, AEU3};
+
+static const struct lp5812_specific_regs regs = {
+ .enable_reg = CHIP_EN_REG,
+ .reset_reg = RESET_REG,
+ .update_cmd_reg = CMD_UPDATE_REG,
+ .start_cmd_reg = CMD_START_REG,
+ .stop_cmd_reg = CMD_STOP_REG,
+ .pause_cmd_reg = CMD_PAUSE_REG,
+ .continue_cmd_reg = CMD_CONTINUE_REG,
+ .fault_clear_reg = FAULT_CLEAR_REG,
+ .tsd_config_status_reg = TSD_CONFIG_STAT_REG,
+};
+
+static void led_kobj_release(struct kobject *kobj)
+{
+ kfree(kobj);
+}
+
+static void aeu_kobj_release(struct kobject *kobj)
+{
+ kfree(kobj);
+}
+
+static const struct kobj_type led_ktype = {
+ .release = led_kobj_release,
+ .sysfs_ops = &kobj_sysfs_ops,
+};
+
+static const struct kobj_type aeu_ktype = {
+ .release = aeu_kobj_release,
+ .sysfs_ops = &kobj_sysfs_ops,
+};
+
+static int lp5812_write(struct lp5812_chip *chip, u16 reg, u8 val)
+{
+ int ret;
+ u8 extracted_bits; /* save 9th and 8th bit of reg address */
+ struct i2c_msg msg;
+ u8 buf[2] = {(u8)(reg & 0xFF), val};
+
+ extracted_bits = (reg >> 8) & 0x03;
+ msg.addr = (chip->i2c_cl->addr << 2) | extracted_bits;
+ msg.flags = 0;
+ msg.len = sizeof(buf);
+ msg.buf = buf;
+
+ ret = i2c_transfer(chip->i2c_cl->adapter, &msg, 1);
+ if (ret != 1) {
+ dev_err(chip->dev, "i2c write error, register 0x%02X, ret=%d\n", reg, ret);
+ ret = ret < 0 ? ret : -EIO;
+ } else {
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static int lp5812_read(struct lp5812_chip *chip, u16 reg, u8 *val)
+{
+ int ret;
+ u8 ret_val; /* lp5812_chip return value */
+ u8 extracted_bits; /* save 9th and 8th bit of reg address */
+ u8 converted_reg; /* extracted 8bit from reg */
+ struct i2c_msg msgs[2];
+
+ extracted_bits = (reg >> 8) & 0x03;
+ converted_reg = (u8)(reg & 0xFF);
+
+ msgs[0].addr = (chip->i2c_cl->addr << 2) | extracted_bits;
+ msgs[0].flags = 0;
+ msgs[0].len = 1;
+ msgs[0].buf = &converted_reg;
+
+ msgs[1].addr = (chip->i2c_cl->addr << 2) | extracted_bits;
+ msgs[1].flags = I2C_M_RD;
+ msgs[1].len = 1;
+ msgs[1].buf = &ret_val;
+
+ ret = i2c_transfer(chip->i2c_cl->adapter, msgs, 2);
+ if (ret != 2) {
+ dev_err(chip->dev, "Read register 0x%02X error, ret=%d\n", reg, ret);
+ *val = 0;
+ ret = ret < 0 ? ret : -EIO;
+ } else {
+ *val = ret_val;
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static int lp5812_read_tsd_config_status(struct lp5812_chip *chip, u8 *reg_val)
+{
+ int ret;
+
+ if (!reg_val)
+ return -1;
+
+ ret = lp5812_read(chip, chip->regs->tsd_config_status_reg, reg_val);
+
+ return ret;
+}
+
+static int lp5812_update_regs_config(struct lp5812_chip *chip)
+{
+ int ret;
+ u8 reg_val; /* save register value */
+
+ /* Send update command to update config setting */
+ ret = lp5812_write(chip, chip->regs->update_cmd_reg, UPDATE_CMD_VAL);
+ if (ret)
+ return ret;
+ /* check if the configuration is proper */
+ ret = lp5812_read_tsd_config_status(chip, ®_val);
+ if (ret == 0)
+ return (int)(reg_val & 0x01);
+
+ return ret;
+}
+
+static int lp5812_read_lod_status(struct lp5812_chip *chip, int led_number, u8 *val)
+{
+ int ret;
+ u16 reg;
+ u8 reg_val;
+
+ if (!val)
+ return -1;
+
+ if (led_number < 0x8)
+ reg = LOD_STAT_1_REG;
+ else
+ reg = LOD_STAT_2_REG;
+
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+
+ *val = (reg_val & (1 << (led_number % 8))) ? 1 : 0;
+
+ return ret;
+}
+
+static int lp5812_read_lsd_status(struct lp5812_chip *chip, int led_number, u8 *val)
+{
+ int ret;
+ u16 reg;
+ u8 reg_val;
+
+ if (!val)
+ return -1;
+
+ if (led_number < 0x8)
+ reg = LSD_STAT_1_REG;
+ else
+ reg = LSD_STAT_2_REG;
+
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+
+ *val = (reg_val & (1 << (led_number % 8))) ? 1 : 0;
+
+ return ret;
+}
+
+static int lp5812_read_auto_pwm_value(struct lp5812_chip *chip, int led_number,
+ u8 *val)
+{
+ int ret;
+ u16 reg;
+ u8 reg_val;
+
+ reg = AUTO_PWM_BASE_ADDR + led_number;
+
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+
+ *val = reg_val;
+
+ return ret;
+}
+
+static int lp5812_read_aep_status(struct lp5812_chip *chip, int led_number, u8 *val)
+{
+ int ret;
+ u16 reg;
+ u8 reg_val;
+
+ switch (led_number / 2) {
+ case 0:
+ reg = AEP_STATUS_0_REG; // LED_0 and LED_1
+ break;
+ case 1:
+ reg = AEP_STATUS_1_REG; // LED_2 and LED_3
+ break;
+ case 2:
+ reg = AEP_STATUS_2_REG; // LED_A0 and LED_A1
+ break;
+ case 3:
+ reg = AEP_STATUS_3_REG; // LED_A2 and LED_B0
+ break;
+ case 4:
+ reg = AEP_STATUS_4_REG; // LED_B1 and LED_B2
+ break;
+ case 5:
+ reg = AEP_STATUS_5_REG; // LED_C0 and LED_C1
+ break;
+ case 6:
+ reg = AEP_STATUS_6_REG; // LED_C2 and LED_D0
+ break;
+ case 7:
+ reg = AEP_STATUS_7_REG; // LED_D1 and LED_D2
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+
+ *val = (led_number % 2) ? ((reg_val >> 3) & 0x07) : (reg_val & 0x07);
+
+ return ret;
+}
+
+static int lp5812_enable_disable(struct lp5812_chip *chip, int enable)
+{
+ return lp5812_write(chip, chip->regs->enable_reg, (u8)enable);
+}
+
+static int lp5812_reset(struct lp5812_chip *chip)
+{
+ return lp5812_write(chip, chip->regs->reset_reg, RESET_REG_VAL);
+}
+
+static int lp5812_fault_clear(struct lp5812_chip *chip, u8 value)
+{
+ u8 reg_val;
+
+ if (value == 0)
+ reg_val = LOD_CLEAR_VAL;
+ else if (value == 1)
+ reg_val = LSD_CLEAR_VAL;
+ else if (value == 2)
+ reg_val = TSD_CLEAR_VAL;
+ else if (value == 3)
+ reg_val = FAULT_CLEAR_ALL;
+ else
+ return -EINVAL;
+
+ return lp5812_write(chip, chip->regs->fault_clear_reg, reg_val);
+}
+
+static int lp5812_device_command(struct lp5812_chip *chip, enum device_command command)
+{
+ switch (command) {
+ case UPDATE:
+ return lp5812_write(chip, chip->regs->update_cmd_reg,
+ UPDATE_CMD_VAL);
+ case START:
+ return lp5812_write(chip, chip->regs->start_cmd_reg,
+ START_CMD_VAL);
+ case STOP:
+ return lp5812_write(chip, chip->regs->stop_cmd_reg,
+ STOP_CMD_VAL);
+ case PAUSE:
+ return lp5812_write(chip, chip->regs->pause_cmd_reg,
+ PAUSE_CMD_VAL);
+ case CONTINUE:
+ return lp5812_write(chip, chip->regs->continue_cmd_reg,
+ CONTINUE_CMD_VAL);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int lp5812_set_pwm_dimming_scale(struct lp5812_chip *chip, int led_number,
+ enum pwm_dimming_scale scale)
+{
+ int ret;
+ u16 reg;
+ u8 reg_val;
+
+ if (led_number <= 7)
+ reg = (u16)DEV_CONFIG5;
+ else
+ reg = (u16)DEV_CONFIG6;
+
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+ if (scale == LINEAR) {
+ reg_val &= ~(1 << (led_number % 8));
+ ret = lp5812_write(chip, reg, reg_val);
+ if (ret)
+ return ret;
+ } else {
+ reg_val |= (1 << (led_number % 8));
+ ret = lp5812_write(chip, reg, reg_val);
+ if (ret)
+ return ret;
+ }
+
+ ret = lp5812_update_regs_config(chip);
+
+ return ret;
+}
+
+static int lp5812_get_pwm_dimming_scale(struct lp5812_chip *chip,
+ int led_number, enum pwm_dimming_scale *scale)
+{
+ int ret;
+ u16 reg;
+ u8 reg_val;
+
+ if (led_number < 0x8)
+ reg = DEV_CONFIG5;
+ else
+ reg = DEV_CONFIG6;
+
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+
+ *scale = (reg_val & (1 << (led_number % 8))) ? EXPONENTIAL : LINEAR;
+
+ return 0;
+}
+
+static int lp5812_set_phase_align(struct lp5812_chip *chip, int led_number,
+ int phase_align_val)
+{
+ int ret;
+ int bit_pos;
+ u16 reg;
+ u8 reg_val;
+
+ reg = DEV_CONFIG7 + (led_number / 4);
+ bit_pos = (led_number % 4) * 2;
+
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+ reg_val |= (phase_align_val << bit_pos);
+ ret = lp5812_write(chip, reg, reg_val);
+ if (ret)
+ return ret;
+ ret = lp5812_update_regs_config(chip);
+
+ return ret;
+}
+
+static int lp5812_get_phase_align(struct lp5812_chip *chip, int led_number,
+ int *phase_align_val)
+{
+ int ret;
+ int bit_pos;
+ u16 reg;
+ u8 reg_val;
+
+ reg = DEV_CONFIG7 + (led_number / 4);
+ bit_pos = (led_number % 4) * 2;
+
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+
+ *phase_align_val = (reg_val >> bit_pos) & 0x03;
+
+ return ret;
+}
+
+static int lp5812_get_led_mode(struct lp5812_chip *chip,
+ int led_number, enum control_mode *mode)
+{
+ int ret;
+ u16 reg;
+ u8 reg_val;
+
+ if (led_number < 0x8)
+ reg = DEV_CONFIG3;
+ else
+ reg = DEV_CONFIG4;
+
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+
+ *mode = (reg_val & (1 << (led_number % 8))) ? AUTONOMOUS : MANUAL;
+
+ return 0;
+}
+
+static int lp5812_set_led_mode(struct lp5812_chip *chip, int led_number,
+ enum control_mode mode)
+{
+ int ret;
+ u16 reg;
+ u8 reg_val;
+
+ if (led_number <= 7)
+ reg = (u16)DEV_CONFIG3;
+ else
+ reg = (u16)DEV_CONFIG4;
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret)
+ return ret;
+ if (mode == MANUAL) {
+ reg_val &= ~(1 << (led_number % 8));
+ ret = lp5812_write(chip, reg, reg_val);
+ if (ret)
+ return ret;
+ } else {
+ reg_val |= (1 << (led_number % 8));
+ ret = lp5812_write(chip, reg, reg_val);
+ if (ret)
+ return ret;
+ }
+
+ ret = lp5812_update_regs_config(chip);
+
+ return ret;
+}
+
+static int lp5812_manual_dc_pwm_control(struct lp5812_chip *chip,
+ int led_number, u8 val, enum dimming_type dimming_type)
+{
+ int ret;
+ u16 led_base_reg;
+
+ if (dimming_type == ANALOG)
+ led_base_reg = (u16)MANUAL_DC_LED_0_REG;
+ else
+ led_base_reg = (u16)MANUAL_PWM_LED_0_REG;
+ ret = lp5812_write(chip, led_base_reg + led_number, val);
+
+ return ret;
+}
+
+static int lp5812_manual_dc_pwm_read(struct lp5812_chip *chip,
+ int led_number, u8 *val, enum dimming_type dimming_type)
+{
+ int ret;
+ u16 led_base_reg;
+
+ if (dimming_type == ANALOG)
+ led_base_reg = (u16)MANUAL_DC_LED_0_REG;
+ else
+ led_base_reg = (u16)MANUAL_PWM_LED_0_REG;
+ ret = lp5812_read(chip, led_base_reg + led_number, val);
+
+ return ret;
+}
+
+static int lp5812_autonomous_dc_pwm_control(struct lp5812_chip *chip,
+ int led_number, u8 val, enum dimming_type dimming_type)
+{
+ int ret;
+ u16 led_base_reg;
+
+ led_base_reg = (u16)AUTO_DC_LED_0_REG;
+ ret = lp5812_write(chip, led_base_reg + led_number, val);
+
+ return ret;
+}
+
+static int lp5812_autonomous_dc_pwm_read(struct lp5812_chip *chip,
+ int led_number, u8 *val, enum dimming_type dimming_type)
+{
+ int ret;
+ u16 led_base_reg;
+
+ led_base_reg = (u16)AUTO_DC_LED_0_REG;
+ ret = lp5812_read(chip, led_base_reg + led_number, val);
+
+ return ret;
+}
+
+static int lp5812_disable_all_leds(struct lp5812_chip *chip)
+{
+ int ret;
+
+ ret = lp5812_write(chip, (u16)LED_ENABLE_1_REG, 0x00);
+ if (ret)
+ return ret;
+ ret = lp5812_write(chip, (u16)LED_ENABLE_2_REG, 0x00);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+static int lp5812_get_drive_mode_scan_order(struct lp5812_chip *chip)
+{
+ u8 val;
+ int ret;
+
+ /* get led mode */
+ ret = lp5812_read(chip, (u16)DEV_CONFIG1, &val);
+ if (ret)
+ return ret;
+ chip->u_drive_mode.drive_mode_val = val;
+
+ /* get scan order */
+ ret = lp5812_read(chip, (u16)DEV_CONFIG2, &val);
+ if (ret)
+ return ret;
+ chip->u_scan_order.scan_order_val = val;
+
+ return ret;
+}
+
+static int lp5812_set_drive_mode_scan_order(struct lp5812_chip *chip)
+{
+ u8 val;
+ int ret;
+
+ /* Set led mode */
+ val = chip->u_drive_mode.drive_mode_val;
+ ret = lp5812_write(chip, (u16)DEV_CONFIG1, val);
+ if (ret)
+ return ret;
+
+ /* Setup scan order */
+ val = chip->u_scan_order.scan_order_val;
+ ret = lp5812_write(chip, (u16)DEV_CONFIG2, val);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+static int lp5812_initialize(struct lp5812_chip *chip)
+{
+ int ret;
+
+ /* wait for 1 ms */
+ usleep_range(1000, 1100);
+
+ /* enable the lp5812 */
+ ret = lp5812_enable_disable(chip, 1);
+ if (ret) {
+ dev_err(chip->dev, "lp5812_enable_disable failed\n");
+ return ret;
+ }
+ ret = lp5812_set_drive_mode_scan_order(chip);
+ if (ret) {
+ dev_err(chip->dev, "lp5812_set_drive_mode_scan_order failed\n");
+ return ret;
+ }
+
+ /* Set lsd_threshold = 3h to avoid incorrect LSD detection */
+ ret = lp5812_write(chip, (u16)DEV_CONFIG12, 0x0B);
+ if (ret) {
+ dev_err(chip->dev, "write 0x0B to DEV_CONFIG12 failed\n");
+ return ret;
+ }
+
+ /* Send update command to complete configuration settings */
+ ret = lp5812_update_regs_config(chip);
+ if (ret) {
+ dev_err(chip->dev, "lp5812_update_regs_config failed\n");
+ return ret;
+ }
+
+ /* Enable LED_A0 for testing */
+ ret = lp5812_write(chip, (u16)LED_ENABLE_1_REG, 0x20);
+ if (ret) {
+ dev_err(chip->dev, "write 0x10 to LED_ENABLE_1_REG failed\n");
+ return ret;
+ }
+ /* set max DC current for LED_A0 */
+ ret = lp5812_write(chip, (u16)0x35, 0x80);
+ if (ret)
+ dev_err(chip->dev, "set max DC current for LED_A0 failed\n");
+
+ /* set 100% pwm cycle for LED_A0 */
+ ret = lp5812_write(chip, (u16)0x45, 0x80);
+ if (ret)
+ dev_err(chip->dev, "set 100 percent pwm cycle for LED_A0 failed\n");
+
+ return ret;
+}
+
+static int led_set_autonomous_animation_config(struct lp5812_led *led)
+{
+ int ret;
+ u16 reg;
+ struct lp5812_chip *chip = led->priv;
+
+ /* Set start/end pause */
+ reg = led->anim_base_addr + AUTO_PAUSE;
+ ret = lp5812_write(chip, reg, led->start_stop_pause_time.time_val);
+ if (ret)
+ return ret;
+
+ /* Set led playback and AEU selection */
+ reg = led->anim_base_addr + AUTO_PLAYBACK;
+ ret = lp5812_write(chip, reg, led->led_playback.led_playback_val);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int led_get_autonomous_animation_config(struct lp5812_led *led)
+{
+ int ret;
+ u16 reg;
+ struct lp5812_chip *chip = led->priv;
+
+ /* Get start/end pause value */
+ reg = led->anim_base_addr + AUTO_PAUSE;
+ ret = lp5812_read(chip, reg, &led->start_stop_pause_time.time_val);
+ if (ret)
+ return ret;
+
+ /* Get led playback and AEU selection values */
+ reg = led->anim_base_addr + AUTO_PLAYBACK;
+ ret = lp5812_read(chip, reg, &led->led_playback.led_playback_val);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static u16 get_aeu_pwm_register(struct anim_engine_unit *aeu,
+ enum pwm_slope_time_num pwm_num)
+{
+ u16 reg;
+ struct lp5812_led *led = aeu->led;
+
+ switch (pwm_num) {
+ case PWM1:
+ if (aeu->aeu_number == 1)
+ reg = led->anim_base_addr + AEU1_PWM_1;
+ else if (aeu->aeu_number == 2)
+ reg = led->anim_base_addr + AEU2_PWM_1;
+ else
+ reg = led->anim_base_addr + AEU3_PWM_1;
+ break;
+ case PWM2:
+ if (aeu->aeu_number == 1)
+ reg = led->anim_base_addr + AEU1_PWM_2;
+ else if (aeu->aeu_number == 2)
+ reg = led->anim_base_addr + AEU2_PWM_2;
+ else
+ reg = led->anim_base_addr + AEU3_PWM_2;
+ break;
+ case PWM3:
+ if (aeu->aeu_number == 1)
+ reg = led->anim_base_addr + AEU1_PWM_3;
+ else if (aeu->aeu_number == 2)
+ reg = led->anim_base_addr + AEU2_PWM_3;
+ else
+ reg = led->anim_base_addr + AEU3_PWM_3;
+ break;
+ case PWM4:
+ if (aeu->aeu_number == 1)
+ reg = led->anim_base_addr + AEU1_PWM_4;
+ else if (aeu->aeu_number == 2)
+ reg = led->anim_base_addr + AEU2_PWM_4;
+ else
+ reg = led->anim_base_addr + AEU3_PWM_4;
+ break;
+ case PWM5:
+ if (aeu->aeu_number == 1)
+ reg = led->anim_base_addr + AEU1_PWM_5;
+ else if (aeu->aeu_number == 2)
+ reg = led->anim_base_addr + AEU2_PWM_5;
+ else
+ reg = led->anim_base_addr + AEU3_PWM_5;
+ break;
+ default:
+ reg = led->anim_base_addr;
+ break;
+ }
+
+ return reg;
+}
+
+static u16 get_aeu_slope_time_register(struct anim_engine_unit *aeu,
+ enum pwm_slope_time_num slope_time_num)
+{
+ u16 reg;
+ struct lp5812_led *led = aeu->led;
+
+ switch (slope_time_num) {
+ case SLOPE_T1:
+ case SLOPE_T2:
+ if (aeu->aeu_number == 1)
+ reg = led->anim_base_addr + AEU1_T12;
+ else if (aeu->aeu_number == 2)
+ reg = led->anim_base_addr + AEU2_T12;
+ else
+ reg = led->anim_base_addr + AEU3_T12;
+ break;
+ case SLOPE_T3:
+ case SLOPE_T4:
+ if (aeu->aeu_number == 1)
+ reg = led->anim_base_addr + AEU1_T34;
+ else if (aeu->aeu_number == 2)
+ reg = led->anim_base_addr + AEU2_T34;
+ else
+ reg = led->anim_base_addr + AEU3_T34;
+ break;
+ default:
+ reg = led->anim_base_addr;
+ break;
+ }
+
+ return reg;
+}
+
+static u16 get_aeu_playback_time_register(struct anim_engine_unit *aeu)
+{
+ u16 reg;
+ struct lp5812_led *led = aeu->led;
+
+ if (aeu->aeu_number == 1)
+ reg = led->anim_base_addr + AEU1_PLAYBACK;
+ else if (aeu->aeu_number == 2)
+ reg = led->anim_base_addr + AEU2_PLAYBACK;
+ else
+ reg = led->anim_base_addr + AEU3_PLAYBACK;
+
+ return reg;
+}
+
+static int led_aeu_pwm_set_val(struct anim_engine_unit *aeu, u8 val,
+ enum pwm_slope_time_num pwm_num)
+{
+ int ret;
+ u16 reg;
+ struct lp5812_led *led = aeu->led;
+ struct lp5812_chip *chip = led->priv;
+
+ reg = get_aeu_pwm_register(aeu, pwm_num);
+ ret = lp5812_write(chip, reg, val);
+
+ return ret;
+}
+
+static int led_aeu_pwm_get_val(struct anim_engine_unit *aeu, u8 *val,
+ enum pwm_slope_time_num pwm_num)
+{
+ int ret;
+ u16 reg;
+ struct lp5812_led *led = aeu->led;
+ struct lp5812_chip *chip = led->priv;
+
+ reg = get_aeu_pwm_register(aeu, pwm_num);
+ ret = lp5812_read(chip, reg, val);
+
+ return ret;
+}
+
+static int led_aeu_slope_time_set_val(struct anim_engine_unit *aeu, u8 val,
+ enum pwm_slope_time_num slope_time_num)
+{
+ int ret;
+ u16 reg;
+ union time slope_time_val;
+ struct lp5812_led *led = aeu->led;
+ struct lp5812_chip *chip = led->priv;
+
+ reg = get_aeu_slope_time_register(aeu, slope_time_num);
+
+ /* get original value of slope time */
+ ret = lp5812_read(chip, reg, &slope_time_val.time_val);
+ if (ret)
+ return ret;
+
+ /* Update new value for slope time*/
+ if (slope_time_num == SLOPE_T1 || slope_time_num == SLOPE_T3)
+ slope_time_val.s_time.first = val;
+ if (slope_time_num == SLOPE_T2 || slope_time_num == SLOPE_T4)
+ slope_time_val.s_time.second = val;
+
+ /* Save updated value to hardware */
+ ret = lp5812_write(chip, reg, slope_time_val.time_val);
+
+ return ret;
+}
+
+static int led_aeu_slope_time_get_val(struct anim_engine_unit *aeu, u8 *val,
+ enum pwm_slope_time_num slope_time_num)
+{
+ int ret;
+ u16 reg;
+ union time slope_time_val;
+ struct lp5812_led *led = aeu->led;
+ struct lp5812_chip *chip = led->priv;
+
+ reg = get_aeu_slope_time_register(aeu, slope_time_num);
+ /* get slope time value */
+ ret = lp5812_read(chip, reg, &slope_time_val.time_val);
+ if (ret)
+ return ret;
+
+ if (slope_time_num == SLOPE_T1 || slope_time_num == SLOPE_T3)
+ *val = slope_time_val.s_time.first;
+
+ if (slope_time_num == SLOPE_T2 || slope_time_num == SLOPE_T4)
+ *val = slope_time_val.s_time.second;
+
+ return ret;
+}
+
+static int led_aeu_playback_time_set_val(struct anim_engine_unit *aeu, u8 val)
+{
+ int ret;
+ u16 reg;
+ struct lp5812_led *led = aeu->led;
+ struct lp5812_chip *chip = led->priv;
+
+ reg = get_aeu_playback_time_register(aeu);
+ ret = lp5812_write(chip, reg, val);
+
+ return ret;
+}
+
+static int led_aeu_playback_time_get_val(struct anim_engine_unit *aeu, u8 *val)
+{
+ int ret;
+ u16 reg;
+ struct lp5812_led *led = aeu->led;
+ struct lp5812_chip *chip = led->priv;
+
+ reg = get_aeu_playback_time_register(aeu);
+ ret = lp5812_read(chip, reg, val);
+
+ return ret;
+}
+
+static int aeu_create_sysfs_group(struct anim_engine_unit *aeu)
+{
+ int ret;
+
+ ret = kobject_add(&aeu->kobj, &aeu->led->kobj, "%s",
+ aeu->aeu_name);
+ if (ret)
+ return ret;
+ ret = sysfs_create_group(&aeu->kobj, &aeu->attr_group);
+ aeu->enabled = 1;
+
+ return ret;
+}
+
+static void aeu_remove_sysfs_group(struct anim_engine_unit *aeu)
+{
+ aeu->enabled = 0;
+ sysfs_remove_group(&aeu->kobj, &aeu->attr_group);
+ kobject_del(&aeu->kobj);
+}
+
+/* Function to remove multiple sysfs group of AEU in one led */
+static void aeu_remove_multi_sysfs_groups(struct lp5812_led *led)
+{
+ int i;
+
+ for (i = 0; i < MAX_AEU; i++) {
+ if (led->aeu[i].enabled)
+ aeu_remove_sysfs_group(&led->aeu[i]);
+ }
+}
+
+/*
+ * Function to create multi sysfs group for specific led. it will
+ * check the mode of led and AEU number selection to create
+ * corresponding AEU interfaces
+ */
+static int aeu_create_multi_sysfs_groups(struct lp5812_led *led)
+{
+ int i;
+ int aeu_select;
+ enum control_mode mode;
+ struct lp5812_chip *chip = led->priv;
+
+ if (lp5812_get_led_mode(chip, led->led_number, &mode))
+ return -EIO;
+ if (mode == AUTONOMOUS) {
+ if (led_get_autonomous_animation_config(led))
+ return -EIO;
+ aeu_select = led->led_playback.s_led_playback.aeu_selection;
+ if (aeu_select == 3)
+ aeu_select = 2;
+ for (i = 0; i < aeu_select + 1; i++)
+ aeu_create_sysfs_group(&led->aeu[i]);
+ }
+
+ return 0;
+}
+
+static int lp5812_create_sysfs_group(struct lp5812_led *led)
+{
+ int ret;
+
+ ret = kobject_add(&led->kobj, &led->priv->dev->kobj, "%s",
+ led->led_name);
+ if (ret)
+ return ret;
+ ret = sysfs_create_group(&led->kobj, &led->attr_group);
+ if (ret)
+ return ret;
+ led->is_sysfs_created = 1;
+
+ return ret;
+}
+
+static void lp5812_remove_sysfs_group(struct lp5812_led *led)
+{
+ int i;
+
+ /* remove sysfs group of AEU */
+ for (i = 0; i < MAX_AEU; i++) {
+ if (led->aeu[i].enabled)
+ aeu_remove_sysfs_group(&led->aeu[i]);
+ }
+ led->is_sysfs_created = 0;
+ sysfs_remove_group(&led->kobj, &led->attr_group);
+ kobject_del(&led->kobj);
+}
+
+static ssize_t device_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ int enable;
+ int ret;
+ struct lp5812_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+
+ ret = kstrtoint(buf, 0, &enable);
+ if (ret)
+ return ret;
+
+ if (enable != 0 && enable != 1)
+ return -EINVAL;
+
+ /* set to hardware */
+ mutex_lock(&chip->lock);
+ ret = lp5812_enable_disable(chip, enable);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return len;
+}
+
+static ssize_t device_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ u8 enable;
+ int ret;
+ struct lp5812_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_read(chip, chip->regs->enable_reg, &enable);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n", enable);
+}
+
+static ssize_t device_command_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ struct lp5812_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+ enum device_command cmd;
+
+ if (sysfs_streq(buf, "update"))
+ cmd = UPDATE;
+ else if (sysfs_streq(buf, "start"))
+ cmd = START;
+ else if (sysfs_streq(buf, "stop"))
+ cmd = STOP;
+ else if (sysfs_streq(buf, "pause"))
+ cmd = PAUSE;
+ else if (sysfs_streq(buf, "continue"))
+ cmd = CONTINUE;
+ else
+ return -EINVAL;
+
+ mutex_lock(&chip->lock);
+ lp5812_device_command(chip, cmd);
+ mutex_unlock(&chip->lock);
+
+ return len;
+}
+
+static ssize_t sw_reset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ int reset;
+ int ret;
+ struct lp5812_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+
+ ret = kstrtoint(buf, 0, &reset);
+ if (ret)
+ return ret;
+
+ if (reset != 1)
+ return -EINVAL;
+
+ /* reset hardware */
+ mutex_lock(&chip->lock);
+ lp5812_reset(chip);
+ msleep(1000);
+ /* set back manual mode as default for all LEDs */
+ lp5812_write(chip, (u16)DEV_CONFIG3, 0x00);
+ lp5812_write(chip, (u16)DEV_CONFIG4, 0x00);
+ lp5812_update_regs_config(chip);
+ mutex_unlock(&chip->lock);
+
+ /* Update sysfs based on default mode when hardware reseted*/
+ ret = lp5812_init_dev_config(chip, "direct_mode", 1);
+ if (ret) {
+ dev_err(dev, "%s: lp5812_init_dev_config failed\n",
+ __func__);
+ return ret;
+ }
+
+ return len;
+}
+
+static ssize_t fault_clear_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ int fault_clear;
+ int ret;
+ struct lp5812_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+
+ ret = kstrtoint(buf, 0, &fault_clear);
+ if (ret)
+ return ret;
+
+ if (fault_clear < 0 || fault_clear > 3)
+ return -EINVAL;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_fault_clear(chip, fault_clear);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return len;
+}
+
+static void lp5812_create_sysfs_via_led_name(struct lp5812_chip *chip,
+ const char *led_name)
+{
+ int i;
+
+ for (i = 0; i < MAX_LEDS; i++) {
+ if (sysfs_streq(led_name, chip->leds[i].led_name)) {
+ lp5812_create_sysfs_group(&chip->leds[i]);
+
+ /*
+ * create AEU interface if current led mode is
+ * autonomous
+ */
+ aeu_create_multi_sysfs_groups(&chip->leds[i]);
+ }
+ }
+}
+
+static void set_mix_sel_led(struct lp5812_chip *chip, int mix_sel_led)
+{
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_0 = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_1 = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_2 = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_3 = 0;
+
+ if (mix_sel_led == 0)
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_0 = 1;
+ else if (mix_sel_led == 1)
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_1 = 1;
+ else if (mix_sel_led == 2)
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_2 = 1;
+ else if (mix_sel_led == 3)
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_3 = 1;
+}
+
+static void parse_drive_mode(struct lp5812_chip *chip, char *str)
+{
+ int ret;
+ char *sub_str;
+ int tcm_scan_num, mix_scan_num, mix_sel_led;
+ int scan_oder0, scan_oder1, scan_oder2, scan_oder3;
+
+ sub_str = strsep(&str, ":");
+ if (sysfs_streq(sub_str, "direct_mode")) {
+ chip->u_drive_mode.s_drive_mode.led_mode = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_0 = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_1 = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_2 = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_3 = 0;
+ }
+ if (sysfs_streq(sub_str, "tcmscan")) {
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_0 = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_1 = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_2 = 0;
+ chip->u_drive_mode.s_drive_mode.mix_sel_led_3 = 0;
+
+ /* Get tcm scan number */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &tcm_scan_num);
+ if (ret)
+ return;
+ chip->u_drive_mode.s_drive_mode.led_mode = tcm_scan_num;
+ switch (tcm_scan_num) {
+ case TCM_1_SCAN:
+ /* Get scan_oder0 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder0);
+ if (ret)
+ return;
+ chip->u_scan_order.s_scan_order.scan_order_0 =
+ scan_oder0;
+ break;
+ case TCM_2_SCAN:
+ /* Get scan_order0 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder0);
+ if (ret)
+ return;
+ /* Get scan_order1 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder1);
+ if (ret)
+ return;
+ chip->u_scan_order.s_scan_order.scan_order_0 =
+ scan_oder0;
+ chip->u_scan_order.s_scan_order.scan_order_1 =
+ scan_oder1;
+ break;
+ case TCM_3_SCAN:
+ /* Get scan_order0 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder0);
+ if (ret)
+ return;
+ /* Get scan_order1 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder1);
+ if (ret)
+ return;
+ /* Get scan_order2 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder2);
+ if (ret)
+ return;
+ chip->u_scan_order.s_scan_order.scan_order_0 =
+ scan_oder0;
+ chip->u_scan_order.s_scan_order.scan_order_1 =
+ scan_oder1;
+ chip->u_scan_order.s_scan_order.scan_order_2 =
+ scan_oder2;
+ break;
+ case TCM_4_SCAN:
+ /* Get scan_order0 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder0);
+ if (ret)
+ return;
+ /* Get scan_order1 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder1);
+ if (ret)
+ return;
+ /* Get scan_order2 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder2);
+ if (ret)
+ return;
+ /* Get scan_order3 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder3);
+ if (ret)
+ return;
+ chip->u_scan_order.s_scan_order.scan_order_0 =
+ scan_oder0;
+ chip->u_scan_order.s_scan_order.scan_order_1 =
+ scan_oder1;
+ chip->u_scan_order.s_scan_order.scan_order_2 =
+ scan_oder2;
+ chip->u_scan_order.s_scan_order.scan_order_3 =
+ scan_oder3;
+ break;
+ default:
+ break;
+ }
+ }
+ if (sysfs_streq(sub_str, "mixscan")) {
+ /* Get mix scan number */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &mix_scan_num);
+ if (ret)
+ return;
+ chip->u_drive_mode.s_drive_mode.led_mode = mix_scan_num + 4;
+ /* Get mix_sel_led */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &mix_sel_led);
+ if (ret)
+ return;
+ set_mix_sel_led(chip, mix_sel_led);
+ if (mix_scan_num == 1) {
+ /* Get scan_order0 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder0);
+ if (ret)
+ return;
+ chip->u_scan_order.s_scan_order.scan_order_0 =
+ scan_oder0;
+ }
+ if (mix_scan_num == 2) {
+ /* Get scan_order0 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder0);
+ if (ret)
+ return;
+ /* Get scan_order1 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder1);
+ if (ret)
+ return;
+ chip->u_scan_order.s_scan_order.scan_order_0 =
+ scan_oder0;
+ chip->u_scan_order.s_scan_order.scan_order_1 =
+ scan_oder1;
+ }
+ if (mix_scan_num == 3) {
+ /* Get scan_order0 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder0);
+ if (ret)
+ return;
+ /* Get scan_order1 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder1);
+ if (ret)
+ return;
+ /* Get scan_order2 */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &scan_oder2);
+ if (ret)
+ return;
+ chip->u_scan_order.s_scan_order.scan_order_0 =
+ scan_oder0;
+ chip->u_scan_order.s_scan_order.scan_order_1 =
+ scan_oder1;
+ chip->u_scan_order.s_scan_order.scan_order_2 =
+ scan_oder2;
+ }
+ }
+}
+
+static void leds_remove_existed_sysfs(struct lp5812_chip *chip)
+{
+ int i;
+
+ for (i = 0; i < MAX_LEDS; i++) {
+ if (chip->leds[i].is_sysfs_created)
+ lp5812_remove_sysfs_group(&chip->leds[i]);
+ }
+}
+
+static int lp5812_init_dev_config(struct lp5812_chip *chip,
+ const char *drive_mode, int rm_led_sysfs)
+{
+ int i;
+ int num_drive_mode;
+ int is_valid_arg = 0;
+ char *str;
+ const char **led_ptr;
+
+ str = kstrdup(drive_mode, GFP_KERNEL);
+ if (!str)
+ return -ENOMEM;
+
+ num_drive_mode = ARRAY_SIZE(chip_leds_map);
+ for (i = 0; i < num_drive_mode; ++i) {
+ if (sysfs_streq(str, chip_leds_map[i].drive_mode)) {
+ if (rm_led_sysfs)
+ leds_remove_existed_sysfs(chip);
+ parse_drive_mode(chip, str);
+ led_ptr = chip_leds_map[i].led_arr;
+ while (*led_ptr) {
+ lp5812_create_sysfs_via_led_name(chip,
+ *led_ptr);
+ ++led_ptr;
+ }
+ is_valid_arg = 1;
+ break;
+ }
+ }
+ kfree(str);
+ if (!is_valid_arg)
+ return -EINVAL;
+
+ return 0;
+}
+
+static ssize_t dev_config_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ int ret;
+ struct lp5812_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_init_dev_config(chip, buf, 1);
+ if (ret) {
+ dev_err(chip->dev, "%s: lp5812_init_dev_config failed\n",
+ __func__);
+ goto out;
+ }
+
+ /* set drive mode and scan order to hardware */
+ ret = lp5812_set_drive_mode_scan_order(chip);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+ ret = lp5812_update_regs_config(chip);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+
+ /* disable all LEDs that were previously enabled */
+ ret = lp5812_disable_all_leds(chip);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+ mutex_unlock(&chip->lock);
+
+ return len;
+out:
+ mutex_unlock(&chip->lock);
+ return ret;
+}
+
+static char *parse_dev_config_info(struct lp5812_chip *chip)
+{
+ char *tmp;
+ int order_0, order_1, order_2, order_3;
+ char *scan_order_0 = " scan_order_0: ";
+ char *scan_order_1 = " scan_order_1: ";
+ char *scan_order_2 = " scan_order_2: ";
+ char *scan_order_3 = " scan_order_3: ";
+
+ tmp = kmalloc(128, GFP_KERNEL);
+ if (!tmp)
+ return NULL;
+
+ order_0 = chip->u_scan_order.s_scan_order.scan_order_0;
+ order_1 = chip->u_scan_order.s_scan_order.scan_order_1;
+ order_2 = chip->u_scan_order.s_scan_order.scan_order_2;
+ order_3 = chip->u_scan_order.s_scan_order.scan_order_3;
+
+ switch (chip->u_drive_mode.s_drive_mode.led_mode) {
+ case DIRECT_MODE:
+ sprintf(tmp, "%s", "Mode: direct mode;");
+ break;
+ case TCM_1_SCAN:
+ sprintf(tmp, "%s%s%d%s", "Mode: tcm 1 scan;", scan_order_0,
+ order_0, ";");
+ break;
+ case TCM_2_SCAN:
+ sprintf(tmp, "%s%s%d%s%s%d%s", "Mode: tcm 2 scan;",
+ scan_order_0, order_0, ";", scan_order_1, order_1, ";");
+ break;
+ case TCM_3_SCAN:
+ sprintf(tmp, "%s%s%d%s%s%d%s%s%d%s", "Mode: tcm 3 scan;",
+ scan_order_0, order_0, ";", scan_order_1, order_1,
+ ";", scan_order_2, order_2, ";");
+ break;
+ case TCM_4_SCAN:
+ sprintf(tmp, "%s%s%d%s%s%d%s%s%d%s%s%d%s", "Mode: tcm 4 scan;",
+ scan_order_0, order_0, ";", scan_order_1, order_1, ";",
+ scan_order_2, order_2, ";", scan_order_3, order_3, ";");
+ break;
+ case MIX_1_SCAN:
+ sprintf(tmp, "%s%s%d%s", "Mode: mix 1 scan;", scan_order_0,
+ order_0, ";");
+ break;
+ case MIX_2_SCAN:
+ sprintf(tmp, "%s%s%d%s%s%d%s", "Mode: mix 2 scan;",
+ scan_order_0, order_0, ";", scan_order_1, order_1, ";");
+ break;
+ case MIX_3_SCAN:
+ sprintf(tmp, "%s%s%d%s%s%d%s%s%d%s", "Mode: mix 3 scan;",
+ scan_order_0, order_0, ";", scan_order_1, order_1,
+ ";", scan_order_2, order_2, ";");
+ break;
+ }
+
+ if (chip->u_drive_mode.s_drive_mode.mix_sel_led_0)
+ strcat(tmp, " Direct output: OUT0;");
+ else if (chip->u_drive_mode.s_drive_mode.mix_sel_led_1)
+ strcat(tmp, " Direct output: OUT1;");
+ else if (chip->u_drive_mode.s_drive_mode.mix_sel_led_2)
+ strcat(tmp, " Direct output: OUT2;");
+ else if (chip->u_drive_mode.s_drive_mode.mix_sel_led_3)
+ strcat(tmp, " Direct output: OUT3;");
+ else
+ strcat(tmp, " Direct output: None;");
+ return tmp;
+}
+
+static ssize_t dev_config_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int i;
+ char *mode_info;
+ int ret;
+ int pos = 0;
+ struct lp5812_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+
+ /* get drive mode and scan order */
+ mutex_lock(&chip->lock);
+ ret = lp5812_get_drive_mode_scan_order(chip);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ mode_info = parse_dev_config_info(chip);
+ if (!mode_info)
+ return -ENOMEM;
+
+ pos += sysfs_emit_at(buf, pos, "%s", mode_info);
+ pos += sysfs_emit_at(buf, pos, "%s", "\nPlease select below valid drive mode:\n");
+ pos += sysfs_emit_at(buf, pos, "%s", "For Ex: echo tcmscan:1:0 > dev_config\n");
+ for (i = 0; i < ARRAY_SIZE(chip_leds_map); ++i)
+ pos += sysfs_emit_at(buf, pos, "%s\n", chip_leds_map[i].drive_mode);
+ kfree(mode_info);
+
+ return pos;
+}
+
+static ssize_t tsd_config_status_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ u8 reg_val;
+ int tsd_stat;
+ int config_stat;
+ struct lp5812_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_read(chip, (u16)TSD_CONFIG_STAT_REG, ®_val);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+ tsd_stat = (reg_val >> 1) & 0x01;
+ config_stat = reg_val & 0x01;
+
+ return sysfs_emit(buf, "%d %d\n", tsd_stat, config_stat);
+}
+
+static LP5812_DEV_ATTR_RW(device_enable);
+static LP5812_DEV_ATTR_RW(dev_config);
+static LP5812_DEV_ATTR_WO(device_command);
+static LP5812_DEV_ATTR_WO(sw_reset);
+static LP5812_DEV_ATTR_WO(fault_clear);
+static LP5812_DEV_ATTR_RO(tsd_config_status);
+
+static struct attribute *lp5812_chip_attributes[] = {
+ &dev_attr_device_enable.attr,
+ &dev_attr_device_command.attr,
+ &dev_attr_sw_reset.attr,
+ &dev_attr_fault_clear.attr,
+ &dev_attr_dev_config.attr,
+ &dev_attr_tsd_config_status.attr,
+ NULL
+};
+
+static ssize_t led_activate_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ u8 val;
+ u16 reg;
+ u8 reg_val;
+ int ret;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ if (led->led_number < 0x8)
+ reg = LED_ENABLE_1_REG;
+ else
+ reg = LED_ENABLE_2_REG;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_read(chip, reg, ®_val);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ val = (reg_val & (1 << (led->led_number % 8))) ? 1 : 0;
+ return sysfs_emit(buf, "%d\n", val);
+}
+
+static ssize_t led_activate_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ int val;
+ u16 reg;
+ u8 reg_val;
+ int ret;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ ret = kstrtoint(buf, 0, &val);
+ if (ret)
+ return -EINVAL;
+
+ if (val != 0 && val != 1)
+ return -EINVAL;
+
+ if (led->led_number < 0x8)
+ reg = LED_ENABLE_1_REG;
+ else
+ reg = LED_ENABLE_2_REG;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_read(chip, reg, ®_val);
+ if (ret == 0) {
+ if (val == 0) {
+ ret = lp5812_write(chip, reg,
+ reg_val & (~(1 << (led->led_number % 8))));
+ } else {
+ ret = lp5812_write(chip, reg,
+ reg_val | (1 << (led->led_number % 8)));
+ }
+ }
+ mutex_unlock(&chip->lock);
+
+ if (ret)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t led_mode_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int ret;
+ enum control_mode mode;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_get_led_mode(chip, led->led_number, &mode);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%s\n", AUTONOMOUS == mode ? "autonomous" : "manual");
+}
+
+static ssize_t led_mode_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ int ret;
+ enum control_mode val;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ if (sysfs_streq(buf, "manual")) {
+ /* Remove AEU sysfs interface for current led in manual mode */
+ aeu_remove_multi_sysfs_groups(led);
+ val = MANUAL;
+ } else if (sysfs_streq(buf, "autonomous")) {
+ val = AUTONOMOUS;
+ } else {
+ return -EINVAL;
+ }
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_set_led_mode(chip, led->led_number, val);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+
+ ret = aeu_create_multi_sysfs_groups(led);
+ if (ret) {
+ dev_err(chip->dev, "aeu_create_multi_sysfs_groups() failed\n");
+ goto out;
+ }
+
+ mutex_unlock(&chip->lock);
+ return count;
+out:
+ mutex_unlock(&chip->lock);
+ return ret;
+}
+
+static ssize_t led_manual_dc_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ int manual_dc;
+ int ret;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ ret = kstrtoint(buf, 0, &manual_dc);
+ if (ret)
+ return ret;
+
+ if (manual_dc < 0 || manual_dc > 255)
+ return -EINVAL;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_manual_dc_pwm_control(chip, led->led_number, manual_dc, ANALOG);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t led_manual_dc_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ u8 val;
+ int ret;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_manual_dc_pwm_read(chip, led->led_number, &val, ANALOG);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n", val);
+}
+
+static ssize_t led_manual_pwm_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ int manual_pwm;
+ int ret;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ ret = kstrtoint(buf, 0, &manual_pwm);
+ if (ret)
+ return ret;
+
+ if (manual_pwm < 0 || manual_pwm > 255)
+ return -EINVAL;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_manual_dc_pwm_control(chip, led->led_number, manual_pwm, PWM);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t led_manual_pwm_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ u8 val;
+ int ret;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_manual_dc_pwm_read(chip, led->led_number, &val, PWM);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n", val);
+}
+
+static ssize_t led_auto_dc_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ int auto_dc;
+ int ret;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ ret = kstrtoint(buf, 0, &auto_dc);
+ if (ret)
+ return ret;
+
+ if (auto_dc < 0 || auto_dc > 255)
+ return -EINVAL;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_autonomous_dc_pwm_control(chip, led->led_number, auto_dc, ANALOG);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t led_auto_dc_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ u8 val;
+ int ret;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_autonomous_dc_pwm_read(chip, led->led_number, &val, ANALOG);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n", val);
+}
+
+static int parse_autonomous_animation_config(struct lp5812_led *led,
+ const char *user_buf)
+{
+ int ret;
+ int i;
+ char *str;
+ char *sub_str;
+ int aeu_select, start_pause_time, stop_pause_time, led_playback_time;
+
+ str = kstrdup(user_buf, GFP_KERNEL);
+ if (!str)
+ return -ENOMEM;
+
+ /* parse aeu_select */
+ sub_str = strsep(&str, ":");
+ ret = kstrtoint(sub_str, 0, &aeu_select);
+ if (ret)
+ goto free_str;
+ if (aeu_select < 1 || aeu_select > 3) {
+ ret = -EINVAL;
+ goto free_str;
+ }
+
+ aeu_remove_multi_sysfs_groups(led);
+
+ for (i = 0; i < aeu_select; i++)
+ aeu_create_sysfs_group(&led->aeu[i]);
+ led->led_playback.s_led_playback.aeu_selection = aeu_select - 1;
+
+ /* parse start_pause_time */
+ sub_str = strsep(&str, ":");
+ if (sub_str) {
+ ret = kstrtoint(sub_str, 0, &start_pause_time);
+ if (ret)
+ goto free_str;
+ if (start_pause_time < 0 || start_pause_time > 15) {
+ ret = -EINVAL;
+ goto free_str;
+ }
+ led->start_stop_pause_time.s_time.second = start_pause_time;
+ } else {
+ led->start_stop_pause_time.s_time.second = 15;
+ }
+
+ /* parse stop_pause_time */
+ sub_str = strsep(&str, ":");
+ if (sub_str) {
+ ret = kstrtoint(sub_str, 0, &stop_pause_time);
+ if (ret)
+ goto free_str;
+ if (stop_pause_time < 0 || stop_pause_time > 15) {
+ ret = -EINVAL;
+ goto free_str;
+ }
+ led->start_stop_pause_time.s_time.first = stop_pause_time;
+ } else {
+ led->start_stop_pause_time.s_time.first = 15;
+ }
+
+ /* parse led_playback_time */
+ sub_str = strsep(&str, ":");
+ if (sub_str) {
+ ret = kstrtoint(sub_str, 0, &led_playback_time);
+ if (ret)
+ goto free_str;
+ if (led_playback_time < 0 || led_playback_time > 15) {
+ ret = -EINVAL;
+ goto free_str;
+ }
+ led->led_playback.s_led_playback.led_playback_time =
+ led_playback_time;
+ } else {
+ led->led_playback.s_led_playback.led_playback_time = 15;
+ }
+
+ kfree(str);
+ return 0;
+
+free_str:
+ kfree(str);
+ return ret;
+}
+
+static ssize_t led_auto_animation_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ int ret;
+ enum control_mode led_mode;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ /* First check the mode of led is manual or autonomous */
+ ret = lp5812_get_led_mode(chip, led->led_number, &led_mode);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+
+ if (led_mode == AUTONOMOUS) {
+ ret = parse_autonomous_animation_config(led, buf);
+ if (ret) {
+ dev_err(chip->dev, "parse_autonomous_animation_config failed\n");
+ goto out;
+ }
+ /* Write data to hardware */
+ ret = led_set_autonomous_animation_config(led);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+ }
+ mutex_unlock(&chip->lock);
+ return count;
+
+out:
+ mutex_unlock(&chip->lock);
+ return ret;
+}
+
+static ssize_t led_auto_animation_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int aeu_selection, playback_time, start_pause, stop_pause;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+ int pos = 0;
+ int ret;
+
+ mutex_lock(&chip->lock);
+ ret = led_get_autonomous_animation_config(led);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+
+ /* parse config and feedback to userspace */
+ aeu_selection = led->led_playback.s_led_playback.aeu_selection;
+ playback_time = led->led_playback.s_led_playback.led_playback_time;
+ start_pause = led->start_stop_pause_time.s_time.second;
+ stop_pause = led->start_stop_pause_time.s_time.first;
+ mutex_unlock(&chip->lock);
+
+ pos += sysfs_emit_at(buf, pos, "AEU Select: ");
+ if (aeu_selection == ONLY_AEU1)
+ pos += sysfs_emit_at(buf, pos, "Only use AEU1");
+ else if (aeu_selection == AEU1_AEU2)
+ pos += sysfs_emit_at(buf, pos, "Use AEU1 and AEU2");
+ else
+ pos += sysfs_emit_at(buf, pos, "Use AEU1, AEU2 and AEU3");
+
+ pos += sysfs_emit_at(buf, pos, "; Start pause time: %s",
+ time_name_array[start_pause]);
+ pos += sysfs_emit_at(buf, pos, "; Stop pause time: %s",
+ time_name_array[stop_pause]);
+ pos += sysfs_emit_at(buf, pos, "; LED Playback time: %s",
+ led_playback_time_arr[playback_time]);
+
+ pos += sysfs_emit_at(buf, pos, "\n");
+ pos += sysfs_emit_at(buf, pos, "Command usage: echo (aeu number):(start pause time):");
+ pos += sysfs_emit_at(buf, pos, "(stop pause time):(playback time) > auto_animation\n");
+
+ return pos;
+
+out:
+ mutex_unlock(&chip->lock);
+ return ret;
+}
+
+static ssize_t led_lod_lsd_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int ret;
+ u8 lsd_status, lod_status;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_read_lsd_status(chip, led->led_number, &lsd_status);
+ if (!ret)
+ ret = lp5812_read_lod_status(chip, led->led_number, &lod_status);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d %d\n", lod_status, lsd_status);
+}
+
+static ssize_t led_auto_pwm_val_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int ret;
+ u8 auto_pwm_val;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_read_auto_pwm_value(chip, led->led_number, &auto_pwm_val);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n", auto_pwm_val);
+}
+
+static ssize_t led_aep_status_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int ret;
+ u8 aep_status;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_read_aep_status(chip, led->led_number, &aep_status);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n", aep_status);
+}
+
+static ssize_t led_pwm_phase_align_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ int val, ret;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ if (sysfs_streq(buf, "forward"))
+ val = 0;
+ else if (sysfs_streq(buf, "middle"))
+ val = 2;
+ else if (sysfs_streq(buf, "backward"))
+ val = 3;
+ else
+ return -EINVAL;
+ mutex_lock(&chip->lock);
+ ret = lp5812_set_phase_align(chip, led->led_number, val);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t led_pwm_phase_align_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int val, ret;
+ char *str;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_get_phase_align(chip, led->led_number, &val);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+ if (val == 0 || val == 1)
+ str = "forward";
+ else if (val == 2)
+ str = "middle";
+ else
+ str = "backward";
+
+ return sysfs_emit(buf, "%s\n", str);
+}
+
+static ssize_t led_pwm_dimming_scale_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ int ret;
+ enum pwm_dimming_scale val;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ if (sysfs_streq(buf, "linear"))
+ val = LINEAR;
+ else if (sysfs_streq(buf, "exponential"))
+ val = EXPONENTIAL;
+ else
+ return -EINVAL;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_set_pwm_dimming_scale(chip, led->led_number, val);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t led_pwm_dimming_scale_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int ret;
+ enum pwm_dimming_scale scale;
+ struct lp5812_led *led = to_lp5812_led(kobj);
+ struct lp5812_chip *chip = led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = lp5812_get_pwm_dimming_scale(chip, led->led_number, &scale);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%s\n",
+ scale == EXPONENTIAL ? "exponential" : "linear");
+}
+
+static LP5812_KOBJ_ATTR_RW(activate, led_activate_show, led_activate_store);
+static LP5812_KOBJ_ATTR_RW(mode, led_mode_show, led_mode_store);
+static LP5812_KOBJ_ATTR_RW(manual_dc, led_manual_dc_show,
+ led_manual_dc_store);
+static LP5812_KOBJ_ATTR_RW(manual_pwm, led_manual_pwm_show,
+ led_manual_pwm_store);
+static LP5812_KOBJ_ATTR_RW(autonomous_dc, led_auto_dc_show,
+ led_auto_dc_store);
+static LP5812_KOBJ_ATTR_RW(autonomous_animation, led_auto_animation_show,
+ led_auto_animation_store);
+static LP5812_KOBJ_ATTR_RW(pwm_phase_align, led_pwm_phase_align_show,
+ led_pwm_phase_align_store);
+static LP5812_KOBJ_ATTR_RW(pwm_dimming_scale, led_pwm_dimming_scale_show,
+ led_pwm_dimming_scale_store);
+static LP5812_KOBJ_ATTR_RO(lod_lsd, led_lod_lsd_show);
+static LP5812_KOBJ_ATTR_RO(auto_pwm_val, led_auto_pwm_val_show);
+static LP5812_KOBJ_ATTR_RO(aep_status, led_aep_status_show);
+
+static struct attribute *led_kobj_attributes[] = {
+ &kobj_attr_activate.attr,
+ &kobj_attr_mode.attr,
+ &kobj_attr_manual_dc.attr,
+ &kobj_attr_manual_pwm.attr,
+ &kobj_attr_autonomous_dc.attr,
+ &kobj_attr_autonomous_animation.attr,
+ &kobj_attr_lod_lsd.attr,
+ &kobj_attr_auto_pwm_val.attr,
+ &kobj_attr_aep_status.attr,
+ &kobj_attr_pwm_phase_align.attr,
+ &kobj_attr_pwm_dimming_scale.attr,
+ NULL
+};
+
+static ssize_t aeu_pwm_store(struct kobject *kobj, struct kobj_attribute *attr,
+ const char *buf, size_t count, enum pwm_slope_time_num pwm_channel)
+{
+ int val;
+ int ret;
+ struct anim_engine_unit *aeu = to_anim_engine_unit(kobj);
+ struct lp5812_chip *chip = aeu->led->priv;
+
+ ret = kstrtoint(buf, 0, &val);
+ if (ret)
+ return -EINVAL;
+ if (val < 0 || val > 255)
+ return -EINVAL;
+
+ mutex_lock(&chip->lock);
+ ret = led_aeu_pwm_set_val(aeu, val, pwm_channel);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t aeu_pwm_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf, enum pwm_slope_time_num pwm_channel)
+{
+ int ret;
+ u8 val;
+ struct anim_engine_unit *aeu = to_anim_engine_unit(kobj);
+ struct lp5812_chip *chip = aeu->led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = led_aeu_pwm_get_val(aeu, &val, pwm_channel);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n", val);
+}
+
+static ssize_t aeu_pwm1_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ return aeu_pwm_store(kobj, attr, buf, count, PWM1);
+}
+
+static ssize_t aeu_pwm1_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return aeu_pwm_show(kobj, attr, buf, PWM1);
+}
+
+static ssize_t aeu_pwm2_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ return aeu_pwm_store(kobj, attr, buf, count, PWM2);
+}
+
+static ssize_t aeu_pwm2_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return aeu_pwm_show(kobj, attr, buf, PWM2);
+}
+
+static ssize_t aeu_pwm3_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ return aeu_pwm_store(kobj, attr, buf, count, PWM3);
+}
+
+static ssize_t aeu_pwm3_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return aeu_pwm_show(kobj, attr, buf, PWM3);
+}
+
+static ssize_t aeu_pwm4_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ return aeu_pwm_store(kobj, attr, buf, count, PWM4);
+}
+
+static ssize_t aeu_pwm4_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return aeu_pwm_show(kobj, attr, buf, PWM4);
+}
+
+static ssize_t aeu_pwm5_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ return aeu_pwm_store(kobj, attr, buf, count, PWM5);
+}
+
+static ssize_t aeu_pwm5_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return aeu_pwm_show(kobj, attr, buf, PWM5);
+}
+
+static ssize_t aeu_slope_time_store(struct kobject *kobj, struct kobj_attribute *attr,
+ const char *buf, size_t count, enum pwm_slope_time_num slope_time_num)
+{
+ int val;
+ int ret;
+ struct anim_engine_unit *aeu = to_anim_engine_unit(kobj);
+ struct lp5812_chip *chip = aeu->led->priv;
+
+ ret = kstrtoint(buf, 0, &val);
+ if (ret)
+ return -EINVAL;
+
+ if (val < 0x00 || val > 0x0F)
+ return -EINVAL;
+
+ mutex_lock(&chip->lock);
+ ret = led_aeu_slope_time_set_val(aeu, val, slope_time_num);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t aeu_slope_time_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf, enum pwm_slope_time_num slope_time_num)
+{
+ int ret;
+ u8 val;
+ struct anim_engine_unit *aeu = to_anim_engine_unit(kobj);
+ struct lp5812_chip *chip = aeu->led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = led_aeu_slope_time_get_val(aeu, &val, slope_time_num);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n", val);
+}
+
+static ssize_t aeu_slope_time_t1_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ return aeu_slope_time_store(kobj, attr, buf, count, SLOPE_T1);
+}
+
+static ssize_t aeu_slope_time_t1_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return aeu_slope_time_show(kobj, attr, buf, SLOPE_T1);
+}
+
+static ssize_t aeu_slope_time_t2_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ return aeu_slope_time_store(kobj, attr, buf, count, SLOPE_T2);
+}
+
+static ssize_t aeu_slope_time_t2_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return aeu_slope_time_show(kobj, attr, buf, SLOPE_T2);
+}
+
+static ssize_t aeu_slope_time_t3_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ return aeu_slope_time_store(kobj, attr, buf, count, SLOPE_T3);
+}
+
+static ssize_t aeu_slope_time_t3_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return aeu_slope_time_show(kobj, attr, buf, SLOPE_T3);
+}
+
+static ssize_t aeu_slope_time_t4_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ return aeu_slope_time_store(kobj, attr, buf, count, SLOPE_T4);
+}
+
+static ssize_t aeu_slope_time_t4_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return aeu_slope_time_show(kobj, attr, buf, SLOPE_T4);
+}
+
+static ssize_t aeu_playback_time_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ int val;
+ int ret;
+ struct anim_engine_unit *aeu = to_anim_engine_unit(kobj);
+ struct lp5812_chip *chip = aeu->led->priv;
+
+ ret = kstrtoint(buf, 0, &val);
+ if (ret)
+ return -EINVAL;
+
+ if (val < 0 || val > 3)
+ return -EINVAL;
+
+ mutex_lock(&chip->lock);
+ ret = led_aeu_playback_time_set_val(aeu, val);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t aeu_playback_time_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int ret;
+ u8 val;
+ struct anim_engine_unit *aeu = to_anim_engine_unit(kobj);
+ struct lp5812_chip *chip = aeu->led->priv;
+
+ mutex_lock(&chip->lock);
+ ret = led_aeu_playback_time_get_val(aeu, &val);
+ mutex_unlock(&chip->lock);
+ if (ret)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n", val);
+}
+
+static LP5812_KOBJ_ATTR_RW(pwm1, aeu_pwm1_show, aeu_pwm1_store);
+static LP5812_KOBJ_ATTR_RW(pwm2, aeu_pwm2_show, aeu_pwm2_store);
+static LP5812_KOBJ_ATTR_RW(pwm3, aeu_pwm3_show, aeu_pwm3_store);
+static LP5812_KOBJ_ATTR_RW(pwm4, aeu_pwm4_show, aeu_pwm4_store);
+static LP5812_KOBJ_ATTR_RW(pwm5, aeu_pwm5_show, aeu_pwm5_store);
+static LP5812_KOBJ_ATTR_RW(slope_time_t1, aeu_slope_time_t1_show,
+ aeu_slope_time_t1_store);
+static LP5812_KOBJ_ATTR_RW(slope_time_t2, aeu_slope_time_t2_show,
+ aeu_slope_time_t2_store);
+static LP5812_KOBJ_ATTR_RW(slope_time_t3, aeu_slope_time_t3_show,
+ aeu_slope_time_t3_store);
+static LP5812_KOBJ_ATTR_RW(slope_time_t4, aeu_slope_time_t4_show,
+ aeu_slope_time_t4_store);
+static LP5812_KOBJ_ATTR_RW(playback_time, aeu_playback_time_show,
+ aeu_playback_time_store);
+
+static struct attribute *aeu_kobj_attributes[] = {
+ &kobj_attr_pwm1.attr,
+ &kobj_attr_pwm2.attr,
+ &kobj_attr_pwm3.attr,
+ &kobj_attr_pwm4.attr,
+ &kobj_attr_pwm5.attr,
+ &kobj_attr_slope_time_t1.attr,
+ &kobj_attr_slope_time_t2.attr,
+ &kobj_attr_slope_time_t3.attr,
+ &kobj_attr_slope_time_t4.attr,
+ &kobj_attr_playback_time.attr,
+ NULL
+};
+
+static void aeu_init_properties(struct lp5812_led *led)
+{
+ int i;
+
+ for (i = 0; i < MAX_AEU; i++) {
+ led->aeu[i].aeu_name = aeu_name_array[i];
+ led->aeu[i].aeu_number = i + 1;
+ led->aeu[i].led = led;
+ led->aeu[i].enabled = 0;
+ led->aeu[i].attr_group.attrs = aeu_kobj_attributes;
+ kobject_init(&led->aeu[i].kobj, &aeu_ktype);
+ }
+}
+
+static int lp5812_probe(struct i2c_client *client)
+{
+ struct lp5812_chip *chip;
+ int i;
+ int ret;
+ u8 val;
+
+ chip = devm_kzalloc(&client->dev, sizeof(struct lp5812_chip),
+ GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+ mutex_init(&chip->lock);
+ chip->i2c_cl = client;
+ chip->dev = &client->dev;
+ chip->regs = ®s;
+ chip->command = NONE;
+ chip->attr_group.name = "lp5812_chip_setup";
+ chip->attr_group.attrs = lp5812_chip_attributes;
+ chip->chip_leds_map = chip_leds_map;
+ chip->u_drive_mode.drive_mode_val = 0x10;
+ chip->u_scan_order.scan_order_val = 0x00;
+
+ /* initialize property for each led */
+ for (i = 0; i < MAX_LEDS; i++) {
+ chip->leds[i].led_name = led_name_array[i];
+ chip->leds[i].led_number = i;
+ chip->leds[i].anim_base_addr = anim_base_addr_array[i];
+ chip->leds[i].enable = 0; /* LED disable as default */
+ chip->leds[i].mode = MANUAL; /* manual mode as default */
+ chip->leds[i].priv = chip;
+ chip->leds[i].led_playback.led_playback_val = 0;
+ chip->leds[i].start_stop_pause_time.time_val = 0;
+ /* sysfs for this led not be created */
+ chip->leds[i].is_sysfs_created = 0;
+ chip->leds[i].attr_group.attrs = led_kobj_attributes;
+ kobject_init(&chip->leds[i].kobj, &led_ktype);
+
+ /* init animation engine unit properties */
+ aeu_init_properties(&chip->leds[i]);
+
+ /* set autonomous animation config as default for all LEDs */
+ led_set_autonomous_animation_config(&chip->leds[i]);
+ }
+
+ i2c_set_clientdata(client, chip);
+
+ ret = sysfs_create_group(&chip->dev->kobj, &chip->attr_group);
+ if (ret)
+ return dev_err_probe(chip->dev, ret, "sysfs_create_group failed\n");
+
+ ret = lp5812_init_dev_config(chip, "tcmscan:4:0:1:2:3", 0);
+ if (ret)
+ return dev_err_probe(chip->dev, ret, "%s: lp5812_init_dev_config failed\n",
+ __func__);
+
+ ret = lp5812_initialize(chip);
+ if (ret)
+ return dev_err_probe(chip->dev, ret, "lp5812 initialize failed\n");
+
+ /* code to verify i2c read/write ok or not */
+ lp5812_read(chip, (u16)DEV_CONFIG2, &val);
+
+ lp5812_write(chip, (u16)LED_A1_AUTO_BASE_ADRR, 0x14);
+ lp5812_read(chip, (u16)LED_A1_AUTO_BASE_ADRR, &val);
+ /* End code to verify i2c read/write*/
+
+ return 0;
+}
+
+static void lp5812_remove(struct i2c_client *client)
+{
+ struct lp5812_chip *chip = i2c_get_clientdata(client);
+
+ mutex_destroy(&chip->lock);
+ leds_remove_existed_sysfs(chip);
+ sysfs_remove_group(&chip->dev->kobj, &chip->attr_group);
+
+ lp5812_disable_all_leds(chip);
+
+ lp5812_enable_disable(chip, 0);
+}
+
+static const struct i2c_device_id lp5812_id[] = {
+ { "lp5812" },
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, lp5812_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id of_lp5812_match[] = {
+ { .compatible = "ti,lp5812", },
+ {/* NULL */}
+};
+
+MODULE_DEVICE_TABLE(of, of_lp5812_match);
+#endif
+
+static struct i2c_driver lp5812_driver = {
+ .driver = {
+ .name = "lp5812",
+ .of_match_table = of_match_ptr(of_lp5812_match),
+ },
+ .probe = lp5812_probe,
+ .remove = lp5812_remove,
+ .id_table = lp5812_id
+};
+
+module_i2c_driver(lp5812_driver);
+
+MODULE_DESCRIPTION("Texas Instruments LP5812 LED Driver");
+MODULE_AUTHOR("Jared Zhou");
+MODULE_LICENSE("GPL");
diff --git a/drivers/leds/leds-lp5812.h b/drivers/leds/leds-lp5812.h
new file mode 100644
index 000000000000..40d995aa4095
--- /dev/null
+++ b/drivers/leds/leds-lp5812.h
@@ -0,0 +1,348 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * LP5812 Driver Header
+ *
+ * Copyright (C) 2025 Texas Instruments
+ *
+ * Author: Jared Zhou <jared-zhou@ti.com>
+ */
+
+#ifndef _LEDS_LP5812_H_
+#define _LEDS_LP5812_H_
+
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+#include <linux/sysfs.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+#include <linux/leds.h>
+#include <linux/delay.h>
+
+#define CHIP_EN_REG 0x00
+
+#define DEV_CONFIG0 0x01
+#define DEV_CONFIG1 0x02
+#define DEV_CONFIG2 0x03
+#define DEV_CONFIG3 0x04
+#define DEV_CONFIG4 0x05
+#define DEV_CONFIG5 0x06
+#define DEV_CONFIG6 0x07
+#define DEV_CONFIG7 0x08
+#define DEV_CONFIG8 0x09
+#define DEV_CONFIG9 0x0A
+#define DEV_CONFIG10 0x0B
+#define DEV_CONFIG11 0x0c
+#define DEV_CONFIG12 0x0D
+
+#define CMD_UPDATE_REG 0x10
+#define CMD_START_REG 0x11
+#define CMD_STOP_REG 0x12
+#define CMD_PAUSE_REG 0x13
+#define CMD_CONTINUE_REG 0x14
+
+#define LED_ENABLE_1_REG 0x20
+#define LED_ENABLE_2_REG 0x21
+
+#define FAULT_CLEAR_REG 0x22
+#define RESET_REG 0x23
+
+#define MANUAL_DC_LED_0_REG 0x30
+#define MANUAL_PWM_LED_0_REG 0x40
+#define AUTO_DC_LED_0_REG 0x50
+
+/* value for register */
+#define UPDATE_CMD_VAL 0x55
+#define START_CMD_VAL 0xFF
+#define STOP_CMD_VAL 0xAA
+#define PAUSE_CMD_VAL 0x33
+#define CONTINUE_CMD_VAL 0xCC
+
+#define CHIP_ENABLE 0x01
+#define CHIP_DISABLE 0x00
+
+#define FAULT_CLEAR_ALL 0x07
+#define TSD_CLEAR_VAL 0x04
+#define LSD_CLEAR_VAL 0x02
+#define LOD_CLEAR_VAL 0x01
+#define RESET_REG_VAL 0x66
+
+#define LED0_AUTO_BASE_ADRR 0x80
+#define LED1_AUTO_BASE_ADRR 0x9A
+#define LED2_AUTO_BASE_ADRR 0xB4
+#define LED3_AUTO_BASE_ADRR 0xCE
+#define LED_A0_AUTO_BASE_ADRR 0xE8
+#define LED_A1_AUTO_BASE_ADRR 0x102
+#define LED_A2_AUTO_BASE_ADRR 0x11C
+#define LED_B0_AUTO_BASE_ADRR 0x136
+#define LED_B1_AUTO_BASE_ADRR 0x150
+#define LED_B2_AUTO_BASE_ADRR 0x16A
+#define LED_C0_AUTO_BASE_ADRR 0x184
+#define LED_C1_AUTO_BASE_ADRR 0x19E
+#define LED_C2_AUTO_BASE_ADRR 0x1B8
+#define LED_D0_AUTO_BASE_ADRR 0x1D2
+#define LED_D1_AUTO_BASE_ADRR 0x1EC
+#define LED_D2_AUTO_BASE_ADRR 0x206
+
+/* Flag Registers */
+#define TSD_CONFIG_STAT_REG 0x300
+#define LOD_STAT_1_REG 0x301
+#define LOD_STAT_2_REG 0x302
+#define LSD_STAT_1_REG 0x303
+#define LSD_STAT_2_REG 0x304
+
+#define AUTO_PWM_BASE_ADDR 0x305
+
+#define AEP_STATUS_0_REG 0x315
+#define AEP_STATUS_1_REG 0x316
+#define AEP_STATUS_2_REG 0x317
+#define AEP_STATUS_3_REG 0x318
+#define AEP_STATUS_4_REG 0x319
+#define AEP_STATUS_5_REG 0x31A
+#define AEP_STATUS_6_REG 0x31B
+#define AEP_STATUS_7_REG 0x31C
+
+#define LED0 "led_0"
+#define LED1 "led_1"
+#define LED2 "led_2"
+#define LED3 "led_3"
+#define LED_A0 "led_A0"
+#define LED_A1 "led_A1"
+#define LED_A2 "led_A2"
+#define LED_B0 "led_B0"
+#define LED_B1 "led_B1"
+#define LED_B2 "led_B2"
+#define LED_C0 "led_C0"
+#define LED_C1 "led_C1"
+#define LED_C2 "led_C2"
+#define LED_D0 "led_D0"
+#define LED_D1 "led_D1"
+#define LED_D2 "led_D2"
+
+/* Below define time for (start/stop/slope time) */
+#define TIME0 "no time"
+#define TIME1 "0.09s"
+#define TIME2 "0.18s"
+#define TIME3 "0.36s"
+#define TIME4 "0.54s"
+#define TIME5 "0.80s"
+#define TIME6 "1.07s"
+#define TIME7 "1.52s"
+#define TIME8 "2.06s"
+#define TIME9 "2.50s"
+#define TIME10 "3.04s"
+#define TIME11 "4.02s"
+#define TIME12 "5.01s"
+#define TIME13 "5.99s"
+#define TIME14 "7.06s"
+#define TIME15 "8.05s"
+/* End define time for (start/stop/slope time) */
+
+#define AEU1 "AEU1"
+#define AEU2 "AEU2"
+#define AEU3 "AEU3"
+
+#define MAX_LEDS 16
+#define MAX_TIME 16
+#define MAX_AEU 3
+
+#define LP5812_DEV_ATTR_RW(name) \
+ DEVICE_ATTR_RW(name)
+#define LP5812_DEV_ATTR_RO(name) \
+ DEVICE_ATTR_RO(name)
+#define LP5812_DEV_ATTR_WO(name) \
+ DEVICE_ATTR_WO(name)
+
+#define LP5812_KOBJ_ATTR(_name, _mode, _show, _store) \
+ struct kobj_attribute kobj_attr_##_name = __ATTR(_name, _mode, _show, _store)
+#define LP5812_KOBJ_ATTR_RW(name, show, store) \
+ LP5812_KOBJ_ATTR(name, 0644, show, store)
+#define LP5812_KOBJ_ATTR_RO(name, show) \
+ LP5812_KOBJ_ATTR(name, 0444, show, NULL)
+#define LP5812_KOBJ_ATTR_WO(name, store) \
+ LP5812_KOBJ_ATTR(name, 0200, NULL, store)
+
+enum pwm_slope_time_num {
+ PWM1 = 1,
+ PWM2,
+ PWM3,
+ PWM4,
+ PWM5,
+ SLOPE_T1,
+ SLOPE_T2,
+ SLOPE_T3,
+ SLOPE_T4
+};
+
+enum dimming_type {
+ ANALOG,
+ PWM
+};
+
+enum pwm_dimming_scale {
+ LINEAR = 0,
+ EXPONENTIAL
+};
+
+enum control_mode {
+ MANUAL = 0,
+ AUTONOMOUS
+};
+
+enum device_command {
+ NONE,
+ UPDATE,
+ START,
+ STOP,
+ PAUSE,
+ CONTINUE
+};
+
+enum animation_addr {
+ AUTO_PAUSE = 0,
+ AUTO_PLAYBACK,
+ AEU1_PWM_1,
+ AEU1_PWM_2,
+ AEU1_PWM_3,
+ AEU1_PWM_4,
+ AEU1_PWM_5,
+ AEU1_T12,
+ AEU1_T34,
+ AEU1_PLAYBACK,
+ AEU2_PWM_1,
+ AEU2_PWM_2,
+ AEU2_PWM_3,
+ AEU2_PWM_4,
+ AEU2_PWM_5,
+ AEU2_T12,
+ AEU2_T34,
+ AEU2_PLAYBACK,
+ AEU3_PWM_1,
+ AEU3_PWM_2,
+ AEU3_PWM_3,
+ AEU3_PWM_4,
+ AEU3_PWM_5,
+ AEU3_T12,
+ AEU3_T34,
+ AEU3_PLAYBACK
+};
+
+enum drive_mode {
+ DIRECT_MODE = 0,
+ TCM_1_SCAN,
+ TCM_2_SCAN,
+ TCM_3_SCAN,
+ TCM_4_SCAN,
+ MIX_1_SCAN,
+ MIX_2_SCAN,
+ MIX_3_SCAN
+};
+
+enum aeu_select {
+ ONLY_AEU1,
+ AEU1_AEU2,
+ AEU1_AEU2_AEU3
+};
+
+union time {
+ struct {
+ u8 first:4;
+ u8 second:4;
+ } __packed s_time;
+ u8 time_val;
+}; /* type for start/stop pause time and slope time */
+
+union led_playback {
+ struct {
+ u8 led_playback_time:4;
+ u8 aeu_selection:2;
+ u8 reserved:2;
+ } __packed s_led_playback;
+ u8 led_playback_val;
+};
+
+union scan_order {
+ struct {
+ u8 scan_order_0:2;
+ u8 scan_order_1:2;
+ u8 scan_order_2:2;
+ u8 scan_order_3:2;
+ } __packed s_scan_order;
+ u8 scan_order_val;
+};
+
+union drive_mode_info {
+ struct {
+ u8 mix_sel_led_0:1;
+ u8 mix_sel_led_1:1;
+ u8 mix_sel_led_2:1;
+ u8 mix_sel_led_3:1;
+ u8 led_mode:3;
+ u8 pwm_fre:1;
+ } __packed s_drive_mode;
+ u8 drive_mode_val;
+};
+
+struct drive_mode_led_map {
+ const char *drive_mode;
+ const char **led_arr;
+};
+
+struct lp5812_specific_regs {
+ u16 enable_reg;
+ u16 reset_reg;
+ u16 update_cmd_reg;
+ u16 start_cmd_reg;
+ u16 stop_cmd_reg;
+ u16 pause_cmd_reg;
+ u16 continue_cmd_reg;
+ u16 fault_clear_reg;
+ u16 tsd_config_status_reg;
+};
+
+struct anim_engine_unit {
+ struct kobject kobj;
+ struct lp5812_led *led;
+ struct attribute_group attr_group;
+ const char *aeu_name;
+ int aeu_number; /* start from 1 */
+
+ /* To know led using this AEU or not*/
+ int enabled;
+};
+
+struct lp5812_led {
+ struct kobject kobj;
+ struct lp5812_chip *priv;
+ struct attribute_group attr_group;
+ int enable;
+ enum control_mode mode;
+ enum dimming_type dimming_type;
+ u8 lod_lsd;
+ u8 auto_pwm;
+ u8 aep_status;
+ u16 anim_base_addr;
+ int led_number; /* start from 0 */
+ int is_sysfs_created;
+ const char *led_name;
+
+ union led_playback led_playback;
+ union time start_stop_pause_time;
+
+ struct anim_engine_unit aeu[MAX_AEU];
+};
+
+struct lp5812_chip {
+ struct i2c_client *i2c_cl;
+ struct mutex lock; /* Protects access to device registers */
+ struct device *dev;
+ struct attribute_group attr_group;
+ const struct lp5812_specific_regs *regs;
+ const struct drive_mode_led_map *chip_leds_map;
+ enum device_command command;
+ union scan_order u_scan_order;
+ union drive_mode_info u_drive_mode;
+
+ struct lp5812_led leds[MAX_LEDS];
+};
+
+#endif /*_LEDS_LP5812_H_*/
--
2.25.1
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