From nobody Thu Nov 14 18:09:21 2024 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8114C6FD19 for ; Fri, 10 Mar 2023 06:56:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230101AbjCJG4y (ORCPT ); Fri, 10 Mar 2023 01:56:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230037AbjCJG4n (ORCPT ); Fri, 10 Mar 2023 01:56:43 -0500 Received: from mg.richtek.com (mg.richtek.com [220.130.44.152]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 18FBFF7ED8; Thu, 9 Mar 2023 22:56:35 -0800 (PST) X-MailGates: (flag:4,DYNAMIC,BADHELO,RELAY,NOHOST:PASS)(compute_score:DE LIVER,40,3) Received: from 192.168.10.46 by mg.richtek.com with MailGates ESMTP Server V5.0(20043:0:AUTH_RELAY) (envelope-from ); Fri, 10 Mar 2023 14:56:02 +0800 (CST) Received: from ex3.rt.l (192.168.10.46) by ex3.rt.l (192.168.10.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Fri, 10 Mar 2023 14:56:01 +0800 Received: from linuxcarl2.richtek.com (192.168.10.154) by ex3.rt.l (192.168.10.45) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Fri, 10 Mar 2023 14:56:01 +0800 From: ChiaEn Wu To: , , , , , , CC: , , , , , , , , Alice Chen , ChiaEn Wu Subject: [PATCH v18 1/3] leds: rgb: mt6370: Add MediaTek MT6370 current sink type LED Indicator support Date: Fri, 10 Mar 2023 14:55:55 +0800 Message-ID: <1df93a583c3f508a7158b83b95857e9bce235e1b.1678430444.git.chiaen_wu@richtek.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: ChiYuan Huang The MediaTek MT6370 is a highly-integrated smart power management IC, which includes a single cell Li-Ion/Li-Polymer switching battery charger, a USB Type-C & Power Delivery (PD) controller, dual Flash LED current sources, a RGB LED driver, a backlight WLED driver, a display bias driver and a general LDO for portable devices. Add support for the MediaTek MT6370 Current Sink Type LED Indicator driver. It can control four channels current-sink RGB LEDs with 3 modes: constant current, PWM, and breath mode. Acked-by: Jacek Anaszewski Co-developed-by: Alice Chen Signed-off-by: Alice Chen Signed-off-by: ChiYuan Huang Signed-off-by: ChiaEn Wu --- v18: - Rename 'MT6370_VENID_MASK' to more human readable 'MT6370_VENDOR_ID_MASK' - Define the const number vid. - Unwrap each line by 100 chars limit. - Remove the redudant space in 'mt6370_gen_breath_pattern()' comment for patterh data allocation. - Define a sub function 'mt6370_assign_multicolor_info()' to tidy up 'mt6370_init_led_properties()' for multicolor case. - Define a sub function 'mt6370_multicolor_led_register' to tidy up 'mt6370_led_register()' for multicolor case. - Refine 'fwnode_handle_put' in probe function with 'goto'. --- drivers/leds/rgb/Kconfig | 13 + drivers/leds/rgb/Makefile | 1 + drivers/leds/rgb/leds-mt6370-rgb.c | 1010 ++++++++++++++++++++++++++++++++= ++++ 3 files changed, 1024 insertions(+) create mode 100644 drivers/leds/rgb/leds-mt6370-rgb.c diff --git a/drivers/leds/rgb/Kconfig b/drivers/leds/rgb/Kconfig index 204cf47..7d86bb2 100644 --- a/drivers/leds/rgb/Kconfig +++ b/drivers/leds/rgb/Kconfig @@ -26,4 +26,17 @@ config LEDS_QCOM_LPG =20 If compiled as a module, the module will be named leds-qcom-lpg. =20 +config LEDS_MT6370_RGB + tristate "LED Support for MediaTek MT6370 PMIC" + depends on MFD_MT6370 + select LINEAR_RANGE + help + Say Y here to enable support for MT6370_RGB LED device. + In MT6370, there are four channel current-sink LED drivers that + support hardware pattern for constant current, PWM, and breath mode. + Isink4 channel can also be used as a CHG_VIN power good indicator. + + This driver can also be built as a module. If so, the module + will be called "leds-mt6370-rgb". + endif # LEDS_CLASS_MULTICOLOR diff --git a/drivers/leds/rgb/Makefile b/drivers/leds/rgb/Makefile index 0675bc0..8c01daf 100644 --- a/drivers/leds/rgb/Makefile +++ b/drivers/leds/rgb/Makefile @@ -2,3 +2,4 @@ =20 obj-$(CONFIG_LEDS_PWM_MULTICOLOR) +=3D leds-pwm-multicolor.o obj-$(CONFIG_LEDS_QCOM_LPG) +=3D leds-qcom-lpg.o +obj-$(CONFIG_LEDS_MT6370_RGB) +=3D leds-mt6370-rgb.o diff --git a/drivers/leds/rgb/leds-mt6370-rgb.c b/drivers/leds/rgb/leds-mt6= 370-rgb.c new file mode 100644 index 00000000..9c1e6d5 --- /dev/null +++ b/drivers/leds/rgb/leds-mt6370-rgb.c @@ -0,0 +1,1010 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2023 Richtek Technology Corp. + * + * Authors: + * ChiYuan Huang + * Alice Chen + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +enum { + MT6370_LED_ISNK1 =3D 0, + MT6370_LED_ISNK2, + MT6370_LED_ISNK3, + MT6370_LED_ISNK4, + MT6370_MAX_LEDS +}; + +enum mt6370_led_mode { + MT6370_LED_PWM_MODE =3D 0, + MT6370_LED_BREATH_MODE, + MT6370_LED_REG_MODE, + MT6370_LED_MAX_MODE +}; + +enum mt6370_led_field { + F_RGB_EN =3D 0, + F_CHGIND_EN, + F_LED1_CURR, + F_LED2_CURR, + F_LED3_CURR, + F_LED4_CURR, + F_LED1_MODE, + F_LED2_MODE, + F_LED3_MODE, + F_LED4_MODE, + F_LED1_DUTY, + F_LED2_DUTY, + F_LED3_DUTY, + F_LED4_DUTY, + F_LED1_FREQ, + F_LED2_FREQ, + F_LED3_FREQ, + F_LED4_FREQ, + F_MAX_FIELDS +}; + +enum mt6370_led_ranges { + R_LED123_CURR =3D 0, + R_LED4_CURR, + R_LED_TRFON, + R_LED_TOFF, + R_MAX_RANGES +}; + +enum mt6370_pattern { + P_LED_TR1 =3D 0, + P_LED_TR2, + P_LED_TF1, + P_LED_TF2, + P_LED_TON, + P_LED_TOFF, + P_MAX_PATTERNS +}; + +#define MT6370_REG_DEV_INFO 0x100 +#define MT6370_REG_RGB1_DIM 0x182 +#define MT6370_REG_RGB2_DIM 0x183 +#define MT6370_REG_RGB3_DIM 0x184 +#define MT6370_REG_RGB_EN 0x185 +#define MT6370_REG_RGB1_ISNK 0x186 +#define MT6370_REG_RGB2_ISNK 0x187 +#define MT6370_REG_RGB3_ISNK 0x188 +#define MT6370_REG_RGB1_TR 0x189 +#define MT6370_REG_RGB_CHRIND_DIM 0x192 +#define MT6370_REG_RGB_CHRIND_CTRL 0x193 +#define MT6370_REG_RGB_CHRIND_TR 0x194 + +#define MT6372_REG_RGB_EN 0x182 +#define MT6372_REG_RGB1_ISNK 0x183 +#define MT6372_REG_RGB2_ISNK 0x184 +#define MT6372_REG_RGB3_ISNK 0x185 +#define MT6372_REG_RGB4_ISNK 0x186 +#define MT6372_REG_RGB1_DIM 0x187 +#define MT6372_REG_RGB2_DIM 0x188 +#define MT6372_REG_RGB3_DIM 0x189 +#define MT6372_REG_RGB4_DIM 0x18A +#define MT6372_REG_RGB12_FREQ 0x18B +#define MT6372_REG_RGB34_FREQ 0x18C +#define MT6372_REG_RGB1_TR 0x18D + +#define MT6370_VENDOR_ID_MASK GENMASK(7, 4) +#define MT6372_VENDOR_ID 0x9 +#define MT6372C_VENDOR_ID 0xb +#define MT6370_CHEN_BIT(id) BIT(MT6370_LED_ISNK4 - id) +#define MT6370_VIRTUAL_MULTICOLOR 5 +#define MC_CHANNEL_NUM 3 +#define MT6370_PWM_DUTY (BIT(5) - 1) +#define MT6372_PWM_DUTY (BIT(8) - 1) + +struct mt6370_led { + /* + * If the color of the LED in DT is set to + * - 'LED_COLOR_ID_RGB' + * - 'LED_COLOR_ID_MULTI' + * The member 'index' of this struct will be set to + * 'MT6370_VIRTUAL_MULTICOLOR'. + * If so, this LED will choose 'struct led_classdev_mc mc' to use. + * Instead, if the member 'index' of this struct is set to + * 'MT6370_LED_ISNK1' ~ 'MT6370_LED_ISNK4', then this LED will choose + * 'struct led_classdev isink' to use. + */ + union { + struct led_classdev isink; + struct led_classdev_mc mc; + }; + struct mt6370_priv *priv; + enum led_default_state default_state; + u32 index; +}; + +struct mt6370_pdata { + const unsigned int *tfreq; + unsigned int tfreq_len; + u16 reg_rgb1_tr; + s16 reg_rgb_chrind_tr; + u8 pwm_duty; +}; + +struct mt6370_priv { + /* Per LED access lock */ + struct mutex lock; + struct regmap *regmap; + struct regmap_field *fields[F_MAX_FIELDS]; + const struct reg_field *reg_fields; + const struct linear_range *ranges; + struct reg_cfg *reg_cfgs; + const struct mt6370_pdata *pdata; + unsigned int leds_count; + unsigned int leds_active; + struct mt6370_led leds[]; +}; + +static const struct reg_field common_reg_fields[F_MAX_FIELDS] =3D { + [F_RGB_EN] =3D REG_FIELD(MT6370_REG_RGB_EN, 4, 7), + [F_CHGIND_EN] =3D REG_FIELD(MT6370_REG_RGB_CHRIND_DIM, 7, 7), + [F_LED1_CURR] =3D REG_FIELD(MT6370_REG_RGB1_ISNK, 0, 2), + [F_LED2_CURR] =3D REG_FIELD(MT6370_REG_RGB2_ISNK, 0, 2), + [F_LED3_CURR] =3D REG_FIELD(MT6370_REG_RGB3_ISNK, 0, 2), + [F_LED4_CURR] =3D REG_FIELD(MT6370_REG_RGB_CHRIND_CTRL, 0, 1), + [F_LED1_MODE] =3D REG_FIELD(MT6370_REG_RGB1_DIM, 5, 6), + [F_LED2_MODE] =3D REG_FIELD(MT6370_REG_RGB2_DIM, 5, 6), + [F_LED3_MODE] =3D REG_FIELD(MT6370_REG_RGB3_DIM, 5, 6), + [F_LED4_MODE] =3D REG_FIELD(MT6370_REG_RGB_CHRIND_DIM, 5, 6), + [F_LED1_DUTY] =3D REG_FIELD(MT6370_REG_RGB1_DIM, 0, 4), + [F_LED2_DUTY] =3D REG_FIELD(MT6370_REG_RGB2_DIM, 0, 4), + [F_LED3_DUTY] =3D REG_FIELD(MT6370_REG_RGB3_DIM, 0, 4), + [F_LED4_DUTY] =3D REG_FIELD(MT6370_REG_RGB_CHRIND_DIM, 0, 4), + [F_LED1_FREQ] =3D REG_FIELD(MT6370_REG_RGB1_ISNK, 3, 5), + [F_LED2_FREQ] =3D REG_FIELD(MT6370_REG_RGB2_ISNK, 3, 5), + [F_LED3_FREQ] =3D REG_FIELD(MT6370_REG_RGB3_ISNK, 3, 5), + [F_LED4_FREQ] =3D REG_FIELD(MT6370_REG_RGB_CHRIND_CTRL, 2, 4), +}; + +static const struct reg_field mt6372_reg_fields[F_MAX_FIELDS] =3D { + [F_RGB_EN] =3D REG_FIELD(MT6372_REG_RGB_EN, 4, 7), + [F_CHGIND_EN] =3D REG_FIELD(MT6372_REG_RGB_EN, 3, 3), + [F_LED1_CURR] =3D REG_FIELD(MT6372_REG_RGB1_ISNK, 0, 3), + [F_LED2_CURR] =3D REG_FIELD(MT6372_REG_RGB2_ISNK, 0, 3), + [F_LED3_CURR] =3D REG_FIELD(MT6372_REG_RGB3_ISNK, 0, 3), + [F_LED4_CURR] =3D REG_FIELD(MT6372_REG_RGB4_ISNK, 0, 3), + [F_LED1_MODE] =3D REG_FIELD(MT6372_REG_RGB1_ISNK, 6, 7), + [F_LED2_MODE] =3D REG_FIELD(MT6372_REG_RGB2_ISNK, 6, 7), + [F_LED3_MODE] =3D REG_FIELD(MT6372_REG_RGB3_ISNK, 6, 7), + [F_LED4_MODE] =3D REG_FIELD(MT6372_REG_RGB4_ISNK, 6, 7), + [F_LED1_DUTY] =3D REG_FIELD(MT6372_REG_RGB1_DIM, 0, 7), + [F_LED2_DUTY] =3D REG_FIELD(MT6372_REG_RGB2_DIM, 0, 7), + [F_LED3_DUTY] =3D REG_FIELD(MT6372_REG_RGB3_DIM, 0, 7), + [F_LED4_DUTY] =3D REG_FIELD(MT6372_REG_RGB4_DIM, 0, 7), + [F_LED1_FREQ] =3D REG_FIELD(MT6372_REG_RGB12_FREQ, 5, 7), + [F_LED2_FREQ] =3D REG_FIELD(MT6372_REG_RGB12_FREQ, 2, 4), + [F_LED3_FREQ] =3D REG_FIELD(MT6372_REG_RGB34_FREQ, 5, 7), + [F_LED4_FREQ] =3D REG_FIELD(MT6372_REG_RGB34_FREQ, 2, 4), +}; + +/* Current unit: microamp, time unit: millisecond */ +static const struct linear_range common_led_ranges[R_MAX_RANGES] =3D { + [R_LED123_CURR] =3D { 4000, 1, 6, 4000 }, + [R_LED4_CURR] =3D { 2000, 1, 3, 2000 }, + [R_LED_TRFON] =3D { 125, 0, 15, 200 }, + [R_LED_TOFF] =3D { 250, 0, 15, 400 }, +}; + +static const struct linear_range mt6372_led_ranges[R_MAX_RANGES] =3D { + [R_LED123_CURR] =3D { 2000, 1, 14, 2000 }, + [R_LED4_CURR] =3D { 2000, 1, 14, 2000 }, + [R_LED_TRFON] =3D { 125, 0, 15, 250 }, + [R_LED_TOFF] =3D { 250, 0, 15, 500 }, +}; + +static const unsigned int common_tfreqs[] =3D { + 10000, 5000, 2000, 1000, 500, 200, 5, 1, +}; + +static const unsigned int mt6372_tfreqs[] =3D { + 8000, 4000, 2000, 1000, 500, 250, 8, 4, +}; + +static const struct mt6370_pdata common_pdata =3D { + .tfreq =3D common_tfreqs, + .tfreq_len =3D ARRAY_SIZE(common_tfreqs), + .pwm_duty =3D MT6370_PWM_DUTY, + .reg_rgb1_tr =3D MT6370_REG_RGB1_TR, + .reg_rgb_chrind_tr =3D MT6370_REG_RGB_CHRIND_TR, +}; + +static const struct mt6370_pdata mt6372_pdata =3D { + .tfreq =3D mt6372_tfreqs, + .tfreq_len =3D ARRAY_SIZE(mt6372_tfreqs), + .pwm_duty =3D MT6372_PWM_DUTY, + .reg_rgb1_tr =3D MT6372_REG_RGB1_TR, + .reg_rgb_chrind_tr =3D -1, +}; + +static enum mt6370_led_field mt6370_get_led_current_field(unsigned int led= _no) +{ + switch (led_no) { + case MT6370_LED_ISNK1: + return F_LED1_CURR; + case MT6370_LED_ISNK2: + return F_LED2_CURR; + case MT6370_LED_ISNK3: + return F_LED3_CURR; + default: + return F_LED4_CURR; + } +} + +static int mt6370_set_led_brightness(struct mt6370_priv *priv, unsigned in= t led_no, + unsigned int level) +{ + enum mt6370_led_field sel_field; + + sel_field =3D mt6370_get_led_current_field(led_no); + + return regmap_field_write(priv->fields[sel_field], level); +} + +static int mt6370_get_led_brightness(struct mt6370_priv *priv, unsigned in= t led_no, + unsigned int *level) +{ + enum mt6370_led_field sel_field; + + sel_field =3D mt6370_get_led_current_field(led_no); + + return regmap_field_read(priv->fields[sel_field], level); +} + +static int mt6370_set_led_duty(struct mt6370_priv *priv, unsigned int led_= no, unsigned int ton, + unsigned int toff) +{ + const struct mt6370_pdata *pdata =3D priv->pdata; + enum mt6370_led_field sel_field; + unsigned int divisor, ratio; + + divisor =3D pdata->pwm_duty; + ratio =3D ton * divisor / (ton + toff); + + switch (led_no) { + case MT6370_LED_ISNK1: + sel_field =3D F_LED1_DUTY; + break; + case MT6370_LED_ISNK2: + sel_field =3D F_LED2_DUTY; + break; + case MT6370_LED_ISNK3: + sel_field =3D F_LED3_DUTY; + break; + default: + sel_field =3D F_LED4_DUTY; + break; + } + + return regmap_field_write(priv->fields[sel_field], ratio); +} + +static int mt6370_set_led_freq(struct mt6370_priv *priv, unsigned int led_= no, unsigned int ton, + unsigned int toff) +{ + const struct mt6370_pdata *pdata =3D priv->pdata; + enum mt6370_led_field sel_field; + unsigned int tfreq_len =3D pdata->tfreq_len; + unsigned int tsum, sel; + + tsum =3D ton + toff; + + if (tsum > pdata->tfreq[0] || tsum < pdata->tfreq[tfreq_len - 1]) + return -EOPNOTSUPP; + + sel =3D find_closest_descending(tsum, pdata->tfreq, tfreq_len); + + switch (led_no) { + case MT6370_LED_ISNK1: + sel_field =3D F_LED1_FREQ; + break; + case MT6370_LED_ISNK2: + sel_field =3D F_LED2_FREQ; + break; + case MT6370_LED_ISNK3: + sel_field =3D F_LED3_FREQ; + break; + default: + sel_field =3D F_LED4_FREQ; + break; + } + + return regmap_field_write(priv->fields[sel_field], sel); +} + +static void mt6370_get_breath_reg_base(struct mt6370_priv *priv, unsigned = int led_no, + unsigned int *base) +{ + const struct mt6370_pdata *pdata =3D priv->pdata; + + if (pdata->reg_rgb_chrind_tr < 0) { + *base =3D pdata->reg_rgb1_tr + led_no * 3; + return; + } + + switch (led_no) { + case MT6370_LED_ISNK1: + case MT6370_LED_ISNK2: + case MT6370_LED_ISNK3: + *base =3D pdata->reg_rgb1_tr + led_no * 3; + break; + default: + *base =3D pdata->reg_rgb_chrind_tr; + break; + } +} + +static int mt6370_gen_breath_pattern(struct mt6370_priv *priv, struct led_= pattern *pattern, u32 len, + u8 *pattern_val, u32 val_len) +{ + enum mt6370_led_ranges sel_range; + struct led_pattern *curr; + unsigned int sel; + u32 val =3D 0; + int i; + + if (len < P_MAX_PATTERNS && val_len < P_MAX_PATTERNS / 2) + return -EINVAL; + + /* + * Pattern list + * tr1: byte 0, b'[7:4] + * tr2: byte 0, b'[3:0] + * tf1: byte 1, b'[7:4] + * tf2: byte 1, b'[3:0] + * ton: byte 2, b'[7:4] + * toff: byte 2, b'[3:0] + */ + for (i =3D 0; i < P_MAX_PATTERNS; i++) { + curr =3D pattern + i; + + sel_range =3D i =3D=3D P_LED_TOFF ? R_LED_TOFF : R_LED_TRFON; + + linear_range_get_selector_within(priv->ranges + sel_range, curr->delta_t= , &sel); + + if (i % 2) { + val |=3D sel; + } else { + val <<=3D 8; + val |=3D sel << 4; + } + } + + put_unaligned_be24(val, pattern_val); + + return 0; +} + +static int mt6370_set_led_mode(struct mt6370_priv *priv, unsigned int led_= no, + enum mt6370_led_mode mode) +{ + enum mt6370_led_field sel_field; + + switch (led_no) { + case MT6370_LED_ISNK1: + sel_field =3D F_LED1_MODE; + break; + case MT6370_LED_ISNK2: + sel_field =3D F_LED2_MODE; + break; + case MT6370_LED_ISNK3: + sel_field =3D F_LED3_MODE; + break; + default: + sel_field =3D F_LED4_MODE; + break; + } + + return regmap_field_write(priv->fields[sel_field], mode); +} + +static int mt6370_mc_brightness_set(struct led_classdev *lcdev, enum led_b= rightness level) +{ + struct led_classdev_mc *mccdev =3D lcdev_to_mccdev(lcdev); + struct mt6370_led *led =3D container_of(mccdev, struct mt6370_led, mc); + struct mt6370_priv *priv =3D led->priv; + struct mc_subled *subled; + unsigned int enable, disable; + int i, ret; + + mutex_lock(&priv->lock); + + led_mc_calc_color_components(mccdev, level); + + ret =3D regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + goto out_unlock; + + disable =3D enable; + + for (i =3D 0; i < mccdev->num_colors; i++) { + u32 brightness; + + subled =3D mccdev->subled_info + i; + brightness =3D min(subled->brightness, lcdev->max_brightness); + disable &=3D ~MT6370_CHEN_BIT(subled->channel); + + if (level =3D=3D 0) { + enable &=3D ~MT6370_CHEN_BIT(subled->channel); + + ret =3D mt6370_set_led_mode(priv, subled->channel, MT6370_LED_REG_MODE); + if (ret) + goto out_unlock; + + continue; + } + + if (brightness =3D=3D 0) { + enable &=3D ~MT6370_CHEN_BIT(subled->channel); + continue; + } + + enable |=3D MT6370_CHEN_BIT(subled->channel); + + ret =3D mt6370_set_led_brightness(priv, subled->channel, brightness); + if (ret) + goto out_unlock; + } + + ret =3D regmap_field_write(priv->fields[F_RGB_EN], disable); + if (ret) + goto out_unlock; + + ret =3D regmap_field_write(priv->fields[F_RGB_EN], enable); + +out_unlock: + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6370_mc_blink_set(struct led_classdev *lcdev, + unsigned long *delay_on, + unsigned long *delay_off) +{ + struct led_classdev_mc *mccdev =3D lcdev_to_mccdev(lcdev); + struct mt6370_led *led =3D container_of(mccdev, struct mt6370_led, mc); + struct mt6370_priv *priv =3D led->priv; + struct mc_subled *subled; + unsigned int enable, disable; + int i, ret; + + mutex_lock(&priv->lock); + + if (!*delay_on && !*delay_off) + *delay_on =3D *delay_off =3D 500; + + ret =3D regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + goto out_unlock; + + disable =3D enable; + + for (i =3D 0; i < mccdev->num_colors; i++) { + subled =3D mccdev->subled_info + i; + + disable &=3D ~MT6370_CHEN_BIT(subled->channel); + + ret =3D mt6370_set_led_duty(priv, subled->channel, *delay_on, *delay_off= ); + if (ret) + goto out_unlock; + + ret =3D mt6370_set_led_freq(priv, subled->channel, *delay_on, *delay_off= ); + if (ret) + goto out_unlock; + + ret =3D mt6370_set_led_mode(priv, subled->channel, MT6370_LED_PWM_MODE); + if (ret) + goto out_unlock; + } + + /* Toggle to make pattern timing the same */ + ret =3D regmap_field_write(priv->fields[F_RGB_EN], disable); + if (ret) + goto out_unlock; + + ret =3D regmap_field_write(priv->fields[F_RGB_EN], enable); + +out_unlock: + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6370_mc_pattern_set(struct led_classdev *lcdev, struct led_pa= ttern *pattern, u32 len, + int repeat) +{ + struct led_classdev_mc *mccdev =3D lcdev_to_mccdev(lcdev); + struct mt6370_led *led =3D container_of(mccdev, struct mt6370_led, mc); + struct mt6370_priv *priv =3D led->priv; + struct mc_subled *subled; + unsigned int reg_base, enable, disable; + u8 params[P_MAX_PATTERNS / 2]; + int i, ret; + + mutex_lock(&priv->lock); + + ret =3D mt6370_gen_breath_pattern(priv, pattern, len, params, sizeof(para= ms)); + if (ret) + goto out_unlock; + + ret =3D regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + goto out_unlock; + + disable =3D enable; + + for (i =3D 0; i < mccdev->num_colors; i++) { + subled =3D mccdev->subled_info + i; + + mt6370_get_breath_reg_base(priv, subled->channel, ®_base); + disable &=3D ~MT6370_CHEN_BIT(subled->channel); + + ret =3D regmap_raw_write(priv->regmap, reg_base, params, sizeof(params)); + if (ret) + goto out_unlock; + + ret =3D mt6370_set_led_mode(priv, subled->channel, MT6370_LED_BREATH_MOD= E); + if (ret) + goto out_unlock; + } + + /* Toggle to make pattern timing be the same */ + ret =3D regmap_field_write(priv->fields[F_RGB_EN], disable); + if (ret) + goto out_unlock; + + ret =3D regmap_field_write(priv->fields[F_RGB_EN], enable); + +out_unlock: + mutex_unlock(&priv->lock); + + return ret; +} + +static inline int mt6370_mc_pattern_clear(struct led_classdev *lcdev) +{ + struct led_classdev_mc *mccdev =3D lcdev_to_mccdev(lcdev); + struct mt6370_led *led =3D container_of(mccdev, struct mt6370_led, mc); + struct mt6370_priv *priv =3D led->priv; + struct mc_subled *subled; + int i, ret; + + mutex_lock(&led->priv->lock); + + for (i =3D 0; i < mccdev->num_colors; i++) { + subled =3D mccdev->subled_info + i; + + ret =3D mt6370_set_led_mode(priv, subled->channel, MT6370_LED_REG_MODE); + if (ret) + break; + } + + mutex_unlock(&led->priv->lock); + + return ret; +} + +static int mt6370_isnk_brightness_set(struct led_classdev *lcdev, + enum led_brightness level) +{ + struct mt6370_led *led =3D container_of(lcdev, struct mt6370_led, isink); + struct mt6370_priv *priv =3D led->priv; + unsigned int enable; + int ret; + + mutex_lock(&priv->lock); + + ret =3D regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + goto out_unlock; + + if (level =3D=3D 0) { + enable &=3D ~MT6370_CHEN_BIT(led->index); + + ret =3D mt6370_set_led_mode(priv, led->index, MT6370_LED_REG_MODE); + if (ret) + goto out_unlock; + } else { + enable |=3D MT6370_CHEN_BIT(led->index); + + ret =3D mt6370_set_led_brightness(priv, led->index, level); + if (ret) + goto out_unlock; + } + + ret =3D regmap_field_write(priv->fields[F_RGB_EN], enable); + +out_unlock: + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6370_isnk_blink_set(struct led_classdev *lcdev, unsigned long= *delay_on, + unsigned long *delay_off) +{ + struct mt6370_led *led =3D container_of(lcdev, struct mt6370_led, isink); + struct mt6370_priv *priv =3D led->priv; + int ret; + + mutex_lock(&priv->lock); + + if (!*delay_on && !*delay_off) + *delay_on =3D *delay_off =3D 500; + + ret =3D mt6370_set_led_duty(priv, led->index, *delay_on, *delay_off); + if (ret) + goto out_unlock; + + ret =3D mt6370_set_led_freq(priv, led->index, *delay_on, *delay_off); + if (ret) + goto out_unlock; + + ret =3D mt6370_set_led_mode(priv, led->index, MT6370_LED_PWM_MODE); + +out_unlock: + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6370_isnk_pattern_set(struct led_classdev *lcdev, struct led_= pattern *pattern, u32 len, + int repeat) +{ + struct mt6370_led *led =3D container_of(lcdev, struct mt6370_led, isink); + struct mt6370_priv *priv =3D led->priv; + unsigned int reg_base; + u8 params[P_MAX_PATTERNS / 2]; + int ret; + + mutex_lock(&priv->lock); + + ret =3D mt6370_gen_breath_pattern(priv, pattern, len, params, sizeof(para= ms)); + if (ret) + goto out_unlock; + + mt6370_get_breath_reg_base(priv, led->index, ®_base); + + ret =3D regmap_raw_write(priv->regmap, reg_base, params, sizeof(params)); + if (ret) + goto out_unlock; + + ret =3D mt6370_set_led_mode(priv, led->index, MT6370_LED_BREATH_MODE); + +out_unlock: + mutex_unlock(&priv->lock); + + return ret; +} + +static inline int mt6370_isnk_pattern_clear(struct led_classdev *lcdev) +{ + struct mt6370_led *led =3D container_of(lcdev, struct mt6370_led, isink); + struct mt6370_priv *priv =3D led->priv; + int ret; + + mutex_lock(&led->priv->lock); + ret =3D mt6370_set_led_mode(priv, led->index, MT6370_LED_REG_MODE); + mutex_unlock(&led->priv->lock); + + return ret; +} + +static int mt6370_assign_multicolor_info(struct device *dev, struct mt6370= _led *led, + struct fwnode_handle *fwnode) +{ + struct mt6370_priv *priv =3D led->priv; + struct fwnode_handle *child; + struct mc_subled *sub_led; + u32 num_color =3D 0; + int ret; + + sub_led =3D devm_kcalloc(dev, MC_CHANNEL_NUM, sizeof(*sub_led), GFP_KERNE= L); + if (!sub_led) + return -ENOMEM; + + fwnode_for_each_child_node(fwnode, child) { + u32 reg, color; + + ret =3D fwnode_property_read_u32(child, "reg", ®); + if (ret || reg > MT6370_LED_ISNK3 || priv->leds_active & BIT(reg)) { + fwnode_handle_put(child); + return -EINVAL; + } + + ret =3D fwnode_property_read_u32(child, "color", &color); + if (ret) { + fwnode_handle_put(child); + return dev_err_probe(dev, ret, "LED %d, no color specified\n", led->ind= ex); + } + + priv->leds_active |=3D BIT(reg); + sub_led[num_color].color_index =3D color; + sub_led[num_color].channel =3D reg; + sub_led[num_color].intensity =3D 0; + num_color++; + } + + if (num_color < 2) + return dev_err_probe(dev, -EINVAL, + "Multicolor must include 2 or more LED channels\n"); + + led->mc.num_colors =3D num_color; + led->mc.subled_info =3D sub_led; + + return 0; +} + +static int mt6370_init_led_properties(struct device *dev, struct mt6370_le= d *led, + struct led_init_data *init_data) +{ + struct mt6370_priv *priv =3D led->priv; + struct led_classdev *lcdev; + enum mt6370_led_ranges sel_range; + u32 max_uA, max_level; + int ret; + + if (led->index =3D=3D MT6370_VIRTUAL_MULTICOLOR) { + ret =3D mt6370_assign_multicolor_info(dev, led, init_data->fwnode); + if (ret) + return ret; + + lcdev =3D &led->mc.led_cdev; + lcdev->brightness_set_blocking =3D mt6370_mc_brightness_set; + lcdev->blink_set =3D mt6370_mc_blink_set; + lcdev->pattern_set =3D mt6370_mc_pattern_set; + lcdev->pattern_clear =3D mt6370_mc_pattern_clear; + } else { + lcdev =3D &led->isink; + lcdev->brightness_set_blocking =3D mt6370_isnk_brightness_set; + lcdev->blink_set =3D mt6370_isnk_blink_set; + lcdev->pattern_set =3D mt6370_isnk_pattern_set; + lcdev->pattern_clear =3D mt6370_isnk_pattern_clear; + } + + ret =3D fwnode_property_read_u32(init_data->fwnode, "led-max-microamp", &= max_uA); + if (ret) { + dev_warn(dev, "Not specified led-max-microamp, config to the minimum\n"); + max_uA =3D 0; + } + + if (led->index =3D=3D MT6370_LED_ISNK4) + sel_range =3D R_LED4_CURR; + else + sel_range =3D R_LED123_CURR; + + linear_range_get_selector_within(priv->ranges + sel_range, max_uA, &max_l= evel); + + lcdev->max_brightness =3D max_level; + + led->default_state =3D led_init_default_state_get(init_data->fwnode); + + return 0; +} + +static int mt6370_isnk_init_default_state(struct mt6370_led *led) +{ + struct mt6370_priv *priv =3D led->priv; + unsigned int enable, level; + int ret; + + ret =3D mt6370_get_led_brightness(priv, led->index, &level); + if (ret) + return ret; + + ret =3D regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + return ret; + + if (!(enable & MT6370_CHEN_BIT(led->index))) + level =3D 0; + + switch (led->default_state) { + case LEDS_DEFSTATE_ON: + led->isink.brightness =3D led->isink.max_brightness; + break; + case LEDS_DEFSTATE_KEEP: + led->isink.brightness =3D min(level, led->isink.max_brightness); + break; + default: + led->isink.brightness =3D 0; + break; + } + + return mt6370_isnk_brightness_set(&led->isink, led->isink.brightness); +} + +static int mt6370_multicolor_led_register(struct device *dev, struct mt637= 0_led *led, + struct led_init_data *init_data) +{ + int ret; + + ret =3D mt6370_mc_brightness_set(&led->mc.led_cdev, 0); + if (ret) + return dev_err_probe(dev, ret, "Couldn't set multicolor brightness\n"); + + ret =3D devm_led_classdev_multicolor_register_ext(dev, &led->mc, init_dat= a); + if (ret) + return dev_err_probe(dev, ret, "Couldn't register multicolor\n"); + + return 0; +} + +static int mt6370_led_register(struct device *dev, struct mt6370_led *led, + struct led_init_data *init_data) +{ + struct mt6370_priv *priv =3D led->priv; + int ret; + + if (led->index =3D=3D MT6370_VIRTUAL_MULTICOLOR) + return mt6370_multicolor_led_register(dev, led, init_data); + + /* If ISNK4 is declared, change its mode from HW auto to SW control */ + if (led->index =3D=3D MT6370_LED_ISNK4) { + ret =3D regmap_field_write(priv->fields[F_CHGIND_EN], 1); + if (ret) + return dev_err_probe(dev, ret, "Failed to set CHRIND to SW\n"); + } + + ret =3D mt6370_isnk_init_default_state(led); + if (ret) + return dev_err_probe(dev, ret, "Failed to init %d isnk state\n", led->in= dex); + + ret =3D devm_led_classdev_register_ext(dev, &led->isink, init_data); + if (ret) + return dev_err_probe(dev, ret, "Couldn't register isink %d\n", led->inde= x); + + return 0; +} + +static int mt6370_check_vendor_info(struct mt6370_priv *priv) +{ + unsigned int devinfo, vid; + int ret; + + ret =3D regmap_read(priv->regmap, MT6370_REG_DEV_INFO, &devinfo); + if (ret) + return ret; + + vid =3D FIELD_GET(MT6370_VENDOR_ID_MASK, devinfo); + if (vid =3D=3D MT6372_VENDOR_ID || vid =3D=3D MT6372C_VENDOR_ID) { + priv->reg_fields =3D mt6372_reg_fields; + priv->ranges =3D mt6372_led_ranges; + priv->pdata =3D &mt6372_pdata; + } else { + /* Common for MT6370/71 */ + priv->reg_fields =3D common_reg_fields; + priv->ranges =3D common_led_ranges; + priv->pdata =3D &common_pdata; + } + + return 0; +} + +static int mt6370_leds_probe(struct platform_device *pdev) +{ + struct device *dev =3D &pdev->dev; + struct mt6370_priv *priv; + struct fwnode_handle *child; + size_t count; + unsigned int i =3D 0; + int ret; + + count =3D device_get_child_node_count(dev); + if (!count || count > MT6370_MAX_LEDS) + return dev_err_probe(dev, -EINVAL, + "No child node or node count over max LED number %zu\n", + count); + + priv =3D devm_kzalloc(dev, struct_size(priv, leds, count), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->leds_count =3D count; + mutex_init(&priv->lock); + + priv->regmap =3D dev_get_regmap(dev->parent, NULL); + if (!priv->regmap) + return dev_err_probe(dev, -ENODEV, "Failed to get parent regmap\n"); + + ret =3D mt6370_check_vendor_info(priv); + if (ret) + return dev_err_probe(dev, ret, "Failed to check vendor info\n"); + + ret =3D devm_regmap_field_bulk_alloc(dev, priv->regmap, priv->fields, pri= v->reg_fields, + F_MAX_FIELDS); + if (ret) + return dev_err_probe(dev, ret, "Failed to allocate regmap field\n"); + + device_for_each_child_node(dev, child) { + struct mt6370_led *led =3D priv->leds + i++; + struct led_init_data init_data =3D { .fwnode =3D child }; + u32 reg, color; + + ret =3D fwnode_property_read_u32(child, "reg", ®); + if (ret) { + dev_err(dev, "Failed to parse reg property\n"); + goto fwnode_release; + } + + if (reg >=3D MT6370_MAX_LEDS) { + ret =3D -EINVAL; + dev_err(dev, "Error reg property number\n"); + goto fwnode_release; + } + + ret =3D fwnode_property_read_u32(child, "color", &color); + if (ret) { + dev_err(dev, "Failed to parse color property\n"); + goto fwnode_release; + } + + if (color =3D=3D LED_COLOR_ID_RGB || color =3D=3D LED_COLOR_ID_MULTI) + reg =3D MT6370_VIRTUAL_MULTICOLOR; + + if (priv->leds_active & BIT(reg)) { + ret =3D -EINVAL; + dev_err(dev, "Duplicate reg property\n"); + goto fwnode_release; + } + + priv->leds_active |=3D BIT(reg); + + led->index =3D reg; + led->priv =3D priv; + + ret =3D mt6370_init_led_properties(dev, led, &init_data); + if (ret) + goto fwnode_release; + + ret =3D mt6370_led_register(dev, led, &init_data); + if (ret) + goto fwnode_release; + } + + return 0; + +fwnode_release: + fwnode_handle_put(child); + return ret; +} + +static const struct of_device_id mt6370_rgbled_device_table[] =3D { + { .compatible =3D "mediatek,mt6370-indicator" }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6370_rgbled_device_table); + +static struct platform_driver mt6370_rgbled_driver =3D { + .driver =3D { + .name =3D "mt6370-indicator", + .of_match_table =3D mt6370_rgbled_device_table, + }, + .probe =3D mt6370_leds_probe, +}; +module_platform_driver(mt6370_rgbled_driver); + +MODULE_AUTHOR("Alice Chen "); +MODULE_AUTHOR("ChiYuan Huang "); +MODULE_DESCRIPTION("MediaTek MT6370 RGB LED Driver"); +MODULE_LICENSE("GPL"); --=20 2.7.4