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Sat, 19 Apr 2025 11:44:12 -0700 (PDT) From: Nam Tran To: pavel@kernel.org, lee@kernel.org, krzk+dt@kernel.org, robh@kernel.org, conor+dt@kernel.org, corbet@lwn.net Cc: devicetree@vger.kernel.org, linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, Nam Tran Subject: [PATCH v6 1/5] dt-bindings: leds: add TI/National Semiconductor LP5812 LED Driver Date: Sun, 20 Apr 2025 01:43:29 +0700 Message-Id: <20250419184333.56617-2-trannamatk@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250419184333.56617-1-trannamatk@gmail.com> References: <20250419184333.56617-1-trannamatk@gmail.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The LP5812 is a 4×3 RGB LED driver with an autonomous animation engine and time-cross-multiplexing (TCM) support for up to 12 LEDs. It supports both analog (256 levels) and PWM (8-bit) dimming, including exponential PWM for smooth brightness control. Signed-off-by: Nam Tran --- .../devicetree/bindings/leds/ti,lp5812.yaml | 46 +++++++++++++++++++ MAINTAINERS | 6 +++ 2 files changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/ti,lp5812.yaml diff --git a/Documentation/devicetree/bindings/leds/ti,lp5812.yaml b/Documentation/devicetree/bindings/leds/ti,lp5812.yaml new file mode 100644 index 000000000000..28cba25713be --- /dev/null +++ b/Documentation/devicetree/bindings/leds/ti,lp5812.yaml @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/ti,lp5812.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TI/National Semiconductor LP5812 LED Driver + +maintainers: + - Nam Tran + +description: | + The LP5812 is an I2C LED Driver that can support LED matrix 4x3. + For more product information please see the link below: + https://www.ti.com/product/LP5812#tech-docs + +properties: + compatible: + const: ti,lp5812 + + reg: + maxItems: 1 + + vcc-supply: + description: Regulator providing power to the 'VCC' pin. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + led-controller@1b { + compatible = "ti,lp5812"; + reg = <0x1b>; + vcc-supply = <&vdd_3v3_reg>; + }; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index c59316109e3f..3901c04b9734 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -23934,6 +23934,12 @@ S: Supported F: Documentation/devicetree/bindings/iio/dac/ti,dac7612.yaml F: drivers/iio/dac/ti-dac7612.c +TEXAS INSTRUMENTS' LP5812 LED DRIVER +M: Nam Tran +L: linux-leds@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/leds/ti,lp5812.yaml + TEXAS INSTRUMENTS' LB8864 LED BACKLIGHT DRIVER M: Alexander Sverdlin L: linux-leds@vger.kernel.org From patchwork Sat Apr 19 18:43:30 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Nam Tran X-Patchwork-Id: 882806 Received: from mail-pg1-f169.google.com (mail-pg1-f169.google.com [209.85.215.169]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7767D1E1308; 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Sat, 19 Apr 2025 11:44:21 -0700 (PDT) Received: from localhost.localdomain ([123.17.0.117]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3087e1149b1sm3383052a91.40.2025.04.19.11.44.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Apr 2025 11:44:20 -0700 (PDT) From: Nam Tran To: pavel@kernel.org, lee@kernel.org, krzk+dt@kernel.org, robh@kernel.org, conor+dt@kernel.org, corbet@lwn.net Cc: devicetree@vger.kernel.org, linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, Nam Tran Subject: [PATCH v6 2/5] leds: add TI/National Semiconductor LP5812 LED Driver Date: Sun, 20 Apr 2025 01:43:30 +0700 Message-Id: <20250419184333.56617-3-trannamatk@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250419184333.56617-1-trannamatk@gmail.com> References: <20250419184333.56617-1-trannamatk@gmail.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 --- MAINTAINERS | 4 + drivers/leds/Kconfig | 16 + drivers/leds/Makefile | 1 + drivers/leds/leds-lp5812.c | 2797 ++++++++++++++++++++++++++++++++++++ drivers/leds/leds-lp5812.h | 350 +++++ 5 files changed, 3168 insertions(+) create mode 100644 drivers/leds/leds-lp5812.c create mode 100644 drivers/leds/leds-lp5812.h diff --git a/MAINTAINERS b/MAINTAINERS index 3901c04b9734..c8a7058668dc 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -23939,6 +23939,10 @@ M: Nam Tran 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 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..c323f8a2f9f2 --- /dev/null +++ b/drivers/leds/leds-lp5812.c @@ -0,0 +1,2797 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * LP5812 LED driver + * + * Copyright (C) 2025 Texas Instruments + * + * Author: Jared Zhou + */ + +#include +#include +#include +#include +#include + +#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 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 = 0; + + 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 = 0; + u16 reg = 0; + u8 reg_val = 0; + + 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 = 0; + u16 reg = 0; + u8 reg_val = 0; + + 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 = 0; + u16 reg = 0; + u8 reg_val = 0; + + 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 = 0; + 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 = 0; + 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 != 0) + return ret; + if (scale == LINEAR) { + reg_val &= ~(1 << (led_number % 8)); + ret = lp5812_write(chip, reg, reg_val); + if (ret != 0) + return ret; + } else { + reg_val |= (1 << (led_number % 8)); + ret = lp5812_write(chip, reg, reg_val); + if (ret != 0) + 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 = 0; + 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 != 0) + 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 = 0; + 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 = 0; + 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 != 0) + return ret; + if (mode == MANUAL) { + reg_val &= ~(1 << (led_number % 8)); + ret = lp5812_write(chip, reg, reg_val); + if (ret != 0) + return ret; + } else { + reg_val |= (1 << (led_number % 8)); + ret = lp5812_write(chip, reg, reg_val); + if (ret != 0) + 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 = 0; + + ret = lp5812_write(chip, (u16)LED_ENABLE_1_REG, 0x00); + if (ret != 0) + return ret; + ret = lp5812_write(chip, (u16)LED_ENABLE_2_REG, 0x00); + if (ret != 0) + return ret; + + return ret; +} + +static int lp5812_get_drive_mode_scan_order(struct lp5812_chip *chip) +{ + u8 val; + int ret = 0; + + /* get led mode */ + ret = lp5812_read(chip, (u16)DEV_CONFIG1, &val); + if (ret != 0) + return ret; + chip->u_drive_mode.drive_mode_val = val; + + /* get scan order */ + ret = lp5812_read(chip, (u16)DEV_CONFIG2, &val); + if (ret != 0) + 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 = 0; + + /* Set led mode */ + val = chip->u_drive_mode.drive_mode_val; + ret = lp5812_write(chip, (u16)DEV_CONFIG1, val); + if (ret != 0) + return ret; + + /* Setup scan order */ + val = chip->u_scan_order.scan_order_val; + ret = lp5812_write(chip, (u16)DEV_CONFIG2, val); + if (ret != 0) + return ret; + + return ret; +} + +static int lp5812_initialize(struct lp5812_chip *chip) +{ + int ret = 0; + + /* wait for 1 ms */ + usleep_range(1000, 1100); + + /* enable the lp5812 */ + ret = lp5812_enable_disable(chip, 1); + if (ret != 0) { + dev_err(chip->dev, "lp5812_enable_disable failed\n"); + return ret; + } + ret = lp5812_set_drive_mode_scan_order(chip); + if (ret != 0) { + 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 != 0) { + 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 != 0) { + 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 != 0) { + 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 != 0) + 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 != 0) + 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 != 0) + 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 = 0; + 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 != 0) + 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 = 0; + + 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 < led->total_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 = 0; + + 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 < led->total_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); + if (lp5812_enable_disable(chip, enable)) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + return len; +} + +static ssize_t device_enable_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + u8 enable; + struct lp5812_chip *chip = i2c_get_clientdata(to_i2c_client(dev)); + + mutex_lock(&chip->lock); + if (lp5812_read(chip, chip->regs->enable_reg, &enable)) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + 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)); + + mutex_lock(&chip->lock); + if (sysfs_streq(buf, "update")) { + lp5812_device_command(chip, UPDATE); + } else if (sysfs_streq(buf, "start")) { + lp5812_device_command(chip, START); + } else if (sysfs_streq(buf, "stop")) { + lp5812_device_command(chip, STOP); + } else if (sysfs_streq(buf, "pause")) { + lp5812_device_command(chip, PAUSE); + } else if (sysfs_streq(buf, "continue")) { + lp5812_device_command(chip, CONTINUE); + } else { + mutex_unlock(&chip->lock); + return -EINVAL; + } + 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 != 1 && fault_clear != 2 && + fault_clear != 3) { + return -EINVAL; + } + mutex_lock(&chip->lock); + if (lp5812_fault_clear(chip, fault_clear)) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + return len; +} + +static void lp5812_create_sysfs_via_led_name(struct lp5812_chip *chip, + const char *led_name) +{ + int i; + + for (i = 0; i < chip->total_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) +{ + if (mix_sel_led == 0) { + chip->u_drive_mode.s_drive_mode.mix_sel_led_0 = 1; + 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 == 1) { + chip->u_drive_mode.s_drive_mode.mix_sel_led_0 = 0; + chip->u_drive_mode.s_drive_mode.mix_sel_led_1 = 1; + 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 == 2) { + 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 = 1; + chip->u_drive_mode.s_drive_mode.mix_sel_led_3 = 0; + } + if (mix_sel_led == 3) { + 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 = 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 < chip->total_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; + int num_drive_mode; + char *mode_info; + char *total_str; + size_t total_length; + char *const_str = "\nPlease select below valid drive mode:\n"; + char *const_ex_str = "For Ex: echo tcmscan:1:0 > dev_config\n"; + int ret = 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; + + num_drive_mode = ARRAY_SIZE(chip_leds_map); + total_length = strlen(mode_info) + strlen(const_str) + + strlen(const_ex_str) + 1; + for (i = 0; i < num_drive_mode; ++i) { + total_length += strlen(chip_leds_map[i].drive_mode) + + strlen("\n"); + } + + total_str = kmalloc(total_length, GFP_KERNEL); + if (!total_str) + return -ENOMEM; + + sprintf(total_str, "%s%s%s", mode_info, const_str, const_ex_str); + for (i = 0; i < num_drive_mode; ++i) { + strcat(total_str, chip_leds_map[i].drive_mode); + strcat(total_str, "\n"); + } + + ret = sysfs_emit(buf, "%s", total_str); + kfree(mode_info); + kfree(total_str); + + return ret; +} + +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 = 0; + u16 reg = 0; + u8 reg_val = 0; + int ret = 0; + 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 = 0; + u16 reg = 0; + u8 reg_val = 0; + int ret = 0; + 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 = 0; + 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); + if (lp5812_manual_dc_pwm_control(chip, led->led_number, + manual_dc, ANALOG)) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + return count; +} + +static ssize_t led_manual_dc_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + u8 val; + struct lp5812_led *led = to_lp5812_led(kobj); + struct lp5812_chip *chip = led->priv; + + mutex_lock(&chip->lock); + if (lp5812_manual_dc_pwm_read(chip, led->led_number, &val, ANALOG)) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + 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); + if (lp5812_manual_dc_pwm_control(chip, led->led_number, + manual_pwm, PWM)) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + return count; +} + +static ssize_t led_manual_pwm_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + u8 val; + struct lp5812_led *led = to_lp5812_led(kobj); + struct lp5812_chip *chip = led->priv; + + mutex_lock(&chip->lock); + if (lp5812_manual_dc_pwm_read(chip, led->led_number, &val, PWM)) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + 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); + if (lp5812_autonomous_dc_pwm_control(chip, led->led_number, + auto_dc, ANALOG)) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + return count; +} + +static ssize_t led_auto_dc_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + u8 val; + struct lp5812_led *led = to_lp5812_led(kobj); + struct lp5812_chip *chip = led->priv; + + mutex_lock(&chip->lock); + if (lp5812_autonomous_dc_pwm_read(chip, led->led_number, + &val, ANALOG)) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + 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 ret; + char tmp_str[256] = {}; + char usage[128] = {}; + char *aeu_select = "AEU Select: "; + char *start_pause_time = "Start pause time: "; + char *stop_pause_time = "; Stop pause time: "; + char *led_playback_time = "; LED Playback time: "; + int aeu_selection, playback_time, start_pause, stop_pause; + struct lp5812_led *led = to_lp5812_led(kobj); + struct lp5812_chip *chip = led->priv; + + sprintf(usage, "%s%s", + "Command usage: echo (aeu number):(start pause time):", + "(stop pause time):(playback time) > autonomous_animation"); + + 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; + if (aeu_selection == ONLY_AEU1) { + sprintf(tmp_str, "%s%s%s%s%s%s%s%s\n", aeu_select, + "Only use AEU1; ", start_pause_time, + time_name_array[start_pause], stop_pause_time, + time_name_array[stop_pause], led_playback_time, + led_playback_time_arr[playback_time]); + } else if (aeu_selection == AEU1_AEU2) { + sprintf(tmp_str, "%s%s%s%s%s%s%s%s\n", aeu_select, + "Use AEU1 and AEU2; ", start_pause_time, + time_name_array[start_pause], stop_pause_time, + time_name_array[stop_pause], led_playback_time, + led_playback_time_arr[playback_time]); + } else { + sprintf(tmp_str, "%s%s%s%s%s%s%s%s\n", aeu_select, + "Use AEU1,AEU2 and AEU3; ", start_pause_time, + time_name_array[start_pause], stop_pause_time, + time_name_array[stop_pause], led_playback_time, + led_playback_time_arr[playback_time]); + } + strcat(tmp_str, usage); + mutex_unlock(&chip->lock); + return sysfs_emit(buf, "%s\n", tmp_str); + +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 = 0; + 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) { + mutex_unlock(&chip->lock); + return -EIO; + } + + ret = lp5812_read_lod_status(chip, led->led_number, &lod_status); + if (ret) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + 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 = 0; + 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 = 0; + 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 = 0; + 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 = 0; + int ret = 0; + 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); + if (ret != 0) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + 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 = 0; + u8 val = 0; + 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 = 0; + int ret = 0; + 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); + if (ret != 0) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + 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 = 0; + u8 val = 0; + 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 = 0; + int ret = 0; + 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); + if (ret != 0) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + return count; +} + +static ssize_t aeu_playback_time_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + int ret = 0; + u8 val = 0; + 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); + if (ret != 0) { + mutex_unlock(&chip->lock); + return -EIO; + } + mutex_unlock(&chip->lock); + + 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->total_leds = MAX_LEDS; + 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].total_aeu = MAX_AEU; + 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..2c26d7cbcc2f --- /dev/null +++ b/drivers/leds/leds-lp5812.h @@ -0,0 +1,350 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * LP5812 Driver Header + * + * Copyright (C) 2025 Texas Instruments + * + * Author: Jared Zhou + */ + +#ifndef _LEDS_LP5812_H_ +#define _LEDS_LP5812_H_ + +#include +#include +#include +#include +#include +#include +#include + +#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; + + int total_aeu; + 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; + int total_leds; + union scan_order u_scan_order; + union drive_mode_info u_drive_mode; + + struct lp5812_led leds[MAX_LEDS]; /* MAX 16 LEDs */ +}; + +#endif /*_LEDS_LP5812_H_*/ From patchwork Sat Apr 19 18:43:31 2025 Content-Type: text/plain; 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Sat, 19 Apr 2025 11:44:57 -0700 (PDT) From: Nam Tran To: pavel@kernel.org, lee@kernel.org, krzk+dt@kernel.org, robh@kernel.org, conor+dt@kernel.org, corbet@lwn.net Cc: devicetree@vger.kernel.org, linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, Nam Tran Subject: [PATCH v6 3/5] docs: ABI: Document LP5812 LED sysfs interfaces Date: Sun, 20 Apr 2025 01:43:31 +0700 Message-Id: <20250419184333.56617-4-trannamatk@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250419184333.56617-1-trannamatk@gmail.com> References: <20250419184333.56617-1-trannamatk@gmail.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The LP5812 is a 4 × 3 matrix RGB LED driver with autonomous animation engine control. The driver provides interfaces to configure LED modes manual/autonomous, set PWM/DC values, and manage autonomous animation engines. Signed-off-by: Nam Tran --- .../ABI/testing/sysfs-bus-i2c-devices-lp5812 | 144 ++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 145 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-i2c-devices-lp5812 diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-lp5812 b/Documentation/ABI/testing/sysfs-bus-i2c-devices-lp5812 new file mode 100644 index 000000000000..04689663a643 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-lp5812 @@ -0,0 +1,144 @@ +What: /sys/bus/i2c/devices/.../lp5812_chip_setup/device_enable +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Enables or disables the LP5812 device. (RW) + 0 - Disable + 1 - Enable + +What: /sys/bus/i2c/devices/.../lp5812_chip_setup/dev_config +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Configures drive mode and scan order. (RW) + Some valid values: tcmscan:4:0:1:2:3 (default), tcmscan:3:0:1:2, mixscan:2:2:0:3, mixscan:3:0:1:2:3 + +What: /sys/bus/i2c/devices/.../lp5812_chip_setup/device_command +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Issues device-level commands. (WO) + Valid values: "update", "start", "stop", "pause", "continue" + +What: /sys/bus/i2c/devices/.../lp5812_chip_setup/sw_reset +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Triggers a software reset of the device. (WO) + 1 - resets device + 0 - does not reset device + +What: /sys/bus/i2c/devices/.../lp5812_chip_setup/fault_clear +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Clears fault status. (WO) + 1 - clears fault status + 0 - does not clear fault status + +What: /sys/bus/i2c/devices/.../lp5812_chip_setup/tsd_config_status +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Report the current thermal shutdown config status. (RO) + +What: /sys/bus/i2c/devices/.../led_/activate +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Activate or deactivate the specified LED channel. (RW) + 1 - Activate + 0 - Deactivate + +What: /sys/bus/i2c/devices/.../led_/mode +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Selects LED operation mode. (RW) + Valid values: "manual", "autonomous" + +What: /sys/bus/i2c/devices/.../led_/manual_dc +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + DC current level in manual mode. (RW) + Valid values: 0 - 255 + +What: /sys/bus/i2c/devices/.../led_/manual_pwm +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + PWM duty cycle in manual mode. (RW) + Valid values: 0 - 255 + +What: /sys/bus/i2c/devices/.../led_/autonomous_dc +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + DC current level used in autonomous mode. (RW) + Valid values: 0 - 255 + +What: /sys/bus/i2c/devices/.../led_/autonomous_dc +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + DC current level used in autonomous mode. (RW) + Valid values: 0 - 255 + +What: /sys/bus/i2c/devices/.../led_/pwm_dimming_scale +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + PWM dimming scale type. (RW) + Valid values: "linear", "exponential" + +What: /sys/bus/i2c/devices/.../led_/pwm_phase_align +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Configures PWM phase alignment. (RW) + Valid values: "forward", "middle", "backward" + +What: /sys/bus/i2c/devices/.../led_/autonomous_animation +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Controls AEU configuration and playback. (RW) + Format: (aeu number):(start pause time):(stop pause time):(playback time) + with aeu number 1, 2, 3; playback time 0 - 15 + +What: /sys/bus/i2c/devices/.../led_/aep_status +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Shows current animation pattern status, value from 0 to 7. (RO) + +What: /sys/bus/i2c/devices/.../led_/auto_pwm_val +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + Shows the pwm value in autonomous mode when pause the animation, value from 0 to 255. (RO) + +What: /sys/bus/i2c/devices/.../led_/lod_lsd +Date: May 2025 +KernelVersion: 6.16 +Contact: Nam Tran +Description: + 0 0 mean no lod and lsd fault detected, 1 1 mean lod and lsd fault detected (RO) diff --git a/MAINTAINERS b/MAINTAINERS index c8a7058668dc..63ecb019e3bc 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -23938,6 +23938,7 @@ TEXAS INSTRUMENTS' LP5812 LED DRIVER M: Nam Tran L: linux-leds@vger.kernel.org S: Maintained +F: Documentation/ABI/testing/sysfs-bus-i2c-devices-lp5812 F: Documentation/devicetree/bindings/leds/ti,lp5812.yaml F: drivers/leds/Kconfig F: drivers/leds/Makefile From patchwork Sat Apr 19 18:43:32 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Nam Tran X-Patchwork-Id: 882805 Received: from mail-pg1-f171.google.com (mail-pg1-f171.google.com [209.85.215.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F02A71E231E; 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Sat, 19 Apr 2025 11:45:04 -0700 (PDT) Received: from localhost.localdomain ([123.17.0.117]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3087e1149b1sm3383052a91.40.2025.04.19.11.45.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Apr 2025 11:45:03 -0700 (PDT) From: Nam Tran To: pavel@kernel.org, lee@kernel.org, krzk+dt@kernel.org, robh@kernel.org, conor+dt@kernel.org, corbet@lwn.net Cc: devicetree@vger.kernel.org, linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, Nam Tran Subject: [PATCH v6 4/5] docs: leds: Document TI LP5812 LED driver Date: Sun, 20 Apr 2025 01:43:32 +0700 Message-Id: <20250419184333.56617-5-trannamatk@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250419184333.56617-1-trannamatk@gmail.com> References: <20250419184333.56617-1-trannamatk@gmail.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The driver provides sysfs interfaces to control and configure the LP5812 device and its LED channels. The documetation describes the chip's capabilities, sysfs interface, and usage examples. Signed-off-by: Nam Tran --- Documentation/leds/leds-lp5812.rst | 79 ++++++++++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 80 insertions(+) create mode 100644 Documentation/leds/leds-lp5812.rst diff --git a/Documentation/leds/leds-lp5812.rst b/Documentation/leds/leds-lp5812.rst new file mode 100644 index 000000000000..ef182f859f86 --- /dev/null +++ b/Documentation/leds/leds-lp5812.rst @@ -0,0 +1,79 @@ +======================== +Kernel driver for lp5812 +======================== + +* TI/National Semiconductor LP5812 LED Driver +* Datasheet: https://www.ti.com/product/LP5812#tech-docs + +Authors: Jared Zhou + +Description +=========== + +The LP5812 is a 4x3 maxtrix LED driver with support for both manual and +autonomous animation control. It provides features such as: + +- PWM dimming and DC current control +- Slope time configuration +- Autonomous Engine Unit (AEU) for LED animation playback +- Flexible scan and drive mode configuration + +This driver provides sysfs interfaces to control and configure the LP5812 +device and its LED channels. + +Sysfs Interface +=============== + +LP5812 device exposes a chip-level sysfs group: + /sys/bus/i2c/devices//lp5812_chip_setup/ + +The following attributes are available at chip level: + - device_enable: Enable/disable the device (RW) + - dev_config: Configure drive mode and scan order (RW) + - device_command: Issue device-wide commands (WO) + - sw_reset: Reset the hardware (WO) + - fault_clear: Clear any device faults (WO) + - tsd_config_status: Read thermal shutdown config status (RO) + +Each LED channel is exposed as: + /sys/bus/i2c/devices//led_/ + +Each LED exposes the following attributes: + - activate: Activate or deactivate the LED (RW) + - mode: manual or autonomous mode (RW) + - manual_dc: DC current value (0–255) (RW) + - manual_pwm: PWM duty cycle (0–255) (RW) + - autonomous_dc: DC current in autonomous mode (RW) + - pwm_dimming_scale: linear or exponential (RW) + - pwm_phase_align: PWM alignment mode (RW) + - autonomous_animation: Config autonomous animation mode with aeu number, start pause time, stop pause time, playback time (RW) + - aep_status: autonomous engine pattern status (RO) + - auto_pwm_val: pwm value in autonomous mode when pause the animation (RO) + - lod_lsd: lod and lsd fault detected status (RO) + +Example Usage +============= + +To control led_A0 in manual mode:: + echo 1 > /sys/bus/i2c/drivers/lp5812/xxxx/lp5812_chip_setup/device_enable + echo 1 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/activate + echo manual > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/mode + echo 100 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/manual_dc + echo 100 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/manual_pwm + +To control led_A0 in autonomous mode:: + echo 1 > /sys/bus/i2c/drivers/lp5812/xxxx/lp5812_chip_setup/device_enable + echo 1 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/activate + echo autonomous > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/mode + echo 1:10:10:15 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/autonomous_animation + echo 100 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/pwm1 + echo 100 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/pwm2 + echo 100 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/pwm3 + echo 100 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/pwm4 + echo 100 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/pwm5 + echo 5 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/slope_time_t1 + echo 5 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/slope_time_t2 + echo 5 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/slope_time_t3 + echo 5 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/slope_time_t4 + echo 1 > /sys/bus/i2c/drivers/lp5812/xxxx/led_A0/AEU1/playback_time + echo start > /sys/bus/i2c/drivers/lp5812/xxxx/lp5812_chip_setup/device_command diff --git a/MAINTAINERS b/MAINTAINERS index 63ecb019e3bc..4433cfe7491c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -23940,6 +23940,7 @@ L: linux-leds@vger.kernel.org S: Maintained F: Documentation/ABI/testing/sysfs-bus-i2c-devices-lp5812 F: Documentation/devicetree/bindings/leds/ti,lp5812.yaml +F: Documentation/leds/leds-lp5812.rst F: drivers/leds/Kconfig F: drivers/leds/Makefile F: drivers/leds/leds-lp5812.c From patchwork Sat Apr 19 18:43:33 2025 Content-Type: text/plain; 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Sat, 19 Apr 2025 11:45:09 -0700 (PDT) From: Nam Tran To: pavel@kernel.org, lee@kernel.org, krzk+dt@kernel.org, robh@kernel.org, conor+dt@kernel.org, corbet@lwn.net Cc: devicetree@vger.kernel.org, linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, Nam Tran Subject: [PATCH v6 5/5] arm64: dts: Add LP5812 LED node for Raspberry Pi 4 Model B Date: Sun, 20 Apr 2025 01:43:33 +0700 Message-Id: <20250419184333.56617-6-trannamatk@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250419184333.56617-1-trannamatk@gmail.com> References: <20250419184333.56617-1-trannamatk@gmail.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add the LP5812 LED driver node to the Device Tree for Raspberry Pi 4 B. This enables the LED connected to the LP5812 to be controlled via I2C. Signed-off-by: Nam Tran --- arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts index 353bb50ce542..2f058cf5d76e 100644 --- a/arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts +++ b/arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts @@ -152,6 +152,16 @@ &hdmi1 { status = "okay"; }; +&i2c1 { + #address-cells = <1>; + #size-cells = <0>; + + led-controller@1b { + compatible = "ti,lp5812"; + reg = <0x1b>; + }; +}; + &led_act { gpios = <&gpio 42 GPIO_ACTIVE_HIGH>; };