Messages in this thread | | | Date | Fri, 15 Jul 2022 14:38:56 +0200 | Subject | Re: [PATCH v5 11/13] leds: mt6370: Add MediaTek MT6370 current sink type LED Indicator support | From | AngeloGioacchino Del Regno <> |
| |
Il 15/07/22 13:26, ChiaEn Wu ha scritto: > From: ChiYuan Huang <cy_huang@richtek.com> > > 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. > > In MediaTek MT6370, there are four channel current-sink RGB LEDs that > support hardware pattern for constant current, PWM, and breath mode. > Isink4 channel can also be used as a CHG_VIN power good indicator. > > Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> > --- > drivers/leds/Kconfig | 14 + > drivers/leds/Makefile | 1 + > drivers/leds/leds-mt6370.c | 994 +++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 1009 insertions(+) > create mode 100644 drivers/leds/leds-mt6370.c > > diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig > index a49979f..71bacb5 100644 > --- a/drivers/leds/Kconfig > +++ b/drivers/leds/Kconfig > @@ -244,6 +244,20 @@ config LEDS_MT6323 > This option enables support for on-chip LED drivers found on > Mediatek MT6323 PMIC. > > +config LEDS_MT6370_RGB > + tristate "LED Support for MediaTek MT6370 PMIC" > + depends on LEDS_CLASS > + 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.ko". > + > config LEDS_S3C24XX > tristate "LED Support for Samsung S3C24XX GPIO LEDs" > depends on LEDS_CLASS > diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile > index 4fd2f92..557be42 100644 > --- a/drivers/leds/Makefile > +++ b/drivers/leds/Makefile > @@ -62,6 +62,7 @@ obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o > obj-$(CONFIG_LEDS_MLXCPLD) += leds-mlxcpld.o > obj-$(CONFIG_LEDS_MLXREG) += leds-mlxreg.o > obj-$(CONFIG_LEDS_MT6323) += leds-mt6323.o > +obj-$(CONFIG_LEDS_MT6370_RGB) += leds-mt6370.o > obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o > obj-$(CONFIG_LEDS_NETXBIG) += leds-netxbig.o > obj-$(CONFIG_LEDS_NIC78BX) += leds-nic78bx.o > diff --git a/drivers/leds/leds-mt6370.c b/drivers/leds/leds-mt6370.c > new file mode 100644 > index 0000000..1038232 > --- /dev/null > +++ b/drivers/leds/leds-mt6370.c > @@ -0,0 +1,994 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2022 Richtek Technology Corp. > + * > + * Author: Alice Chen <alice_chen@richtek.com> > + */ > + > +#include <linux/bitops.h> > +#include <linux/kernel.h> > +#include <linux/led-class-multicolor.h> > +#include <linux/linear_range.h> > +#include <linux/mod_devicetable.h> > +#include <linux/module.h> > +#include <linux/mutex.h> > +#include <linux/platform_device.h> > +#include <linux/property.h> > +#include <linux/regmap.h> > + > +enum { > + MT6370_LED_ISNK1 = 0, > + MT6370_LED_ISNK2, > + MT6370_LED_ISNK3, > + MT6370_LED_ISNK4, > + MT6370_MAX_LEDS > +}; > + > +enum mt6370_led_mode { > + MT6370_LED_PWM_MODE = 0, > + MT6370_LED_BREATH_MODE, > + MT6370_LED_REG_MODE, > + MT6370_LED_MAX_MODE > +}; > + > +enum mt6370_led_field { > + F_RGB_EN = 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 = 0, > + R_LED4_CURR, > + R_LED_TRFON, > + R_LED_TOFF, > + R_MAX_RANGES, > +}; > + > +enum mt6370_pattern { > + P_LED_TR1 = 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_VENID_MASK GENMASK(7, 4) > +#define MT6370_CHEN_BIT(id) BIT(MT6370_LED_ISNK4 - id) > +#define MT6370_VIRTUAL_MULTICOLOR 5 > +#define MC_CHANNEL_NUM 3 > +#define MT6370_PWM_DUTY 31 > +#define MT6372_PMW_DUTY 255
Please fix this typo: PMW -> PWM
> + > +#define STATE_OFF 0 > +#define STATE_KEEP 1 > +#define STATE_ON 2
I propose, instead:
enum mt6370_state { STATE_OFF = 0, STATE_KEEP, STATE_ON, STATE_MAX, };
> + > +struct mt6370_led { > + union { > + struct led_classdev isink; > + struct led_classdev_mc mc; > + }; > + struct mt6370_priv *priv; > + u32 default_state; > + u32 index; > +}; > + > +struct mt6370_priv { > + /* Per LED access lock */ > + struct mutex lock; > + struct device *dev; > + 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; > + unsigned int leds_count; > + unsigned int leds_active; > + bool is_mt6372;
Instead of using a bool for that, you can enhance the flexibility of this driver (and also somewhat reduce cpu cycles) by using:
struct mt6370_pdata *pdata;
where a good definition of that structure would be...
struct mt6370_pdata {
const unsigned int *tfreq;
unsigned int tfreq_len;
u8 pwm_duty;
u8 reg_rgb1_tr;
/*
* You can set this one to -1 on MT6372 to indicate that
* this register does not exist (hence use that in function
* mt6370_get_breath_reg_base() to replace priv->is_mt6372)
*/
s16 reg_rgb_chrind_tr;
};
> + struct mt6370_led leds[]; > +}; > + > +static const struct reg_field common_reg_fields[F_MAX_FIELDS] = { > + [F_RGB_EN] = REG_FIELD(MT6370_REG_RGB_EN, 4, 7), > + [F_CHGIND_EN] = REG_FIELD(MT6370_REG_RGB_CHRIND_DIM, 7, 7), > + [F_LED1_CURR] = REG_FIELD(MT6370_REG_RGB1_ISNK, 0, 2), > + [F_LED2_CURR] = REG_FIELD(MT6370_REG_RGB2_ISNK, 0, 2), > + [F_LED3_CURR] = REG_FIELD(MT6370_REG_RGB3_ISNK, 0, 2), > + [F_LED4_CURR] = REG_FIELD(MT6370_REG_RGB_CHRIND_CTRL, 0, 1), > + [F_LED1_MODE] = REG_FIELD(MT6370_REG_RGB1_DIM, 5, 6), > + [F_LED2_MODE] = REG_FIELD(MT6370_REG_RGB2_DIM, 5, 6), > + [F_LED3_MODE] = REG_FIELD(MT6370_REG_RGB3_DIM, 5, 6), > + [F_LED4_MODE] = REG_FIELD(MT6370_REG_RGB_CHRIND_DIM, 5, 6), > + [F_LED1_DUTY] = REG_FIELD(MT6370_REG_RGB1_DIM, 0, 4), > + [F_LED2_DUTY] = REG_FIELD(MT6370_REG_RGB2_DIM, 0, 4), > + [F_LED3_DUTY] = REG_FIELD(MT6370_REG_RGB3_DIM, 0, 4), > + [F_LED4_DUTY] = REG_FIELD(MT6370_REG_RGB_CHRIND_DIM, 0, 4), > + [F_LED1_FREQ] = REG_FIELD(MT6370_REG_RGB1_ISNK, 3, 5), > + [F_LED2_FREQ] = REG_FIELD(MT6370_REG_RGB2_ISNK, 3, 5), > + [F_LED3_FREQ] = REG_FIELD(MT6370_REG_RGB3_ISNK, 3, 5), > + [F_LED4_FREQ] = REG_FIELD(MT6370_REG_RGB_CHRIND_CTRL, 2, 4) > +}; > + > +static const struct reg_field mt6372_reg_fields[F_MAX_FIELDS] = { > + [F_RGB_EN] = REG_FIELD(MT6372_REG_RGB_EN, 4, 7), > + [F_CHGIND_EN] = REG_FIELD(MT6372_REG_RGB_EN, 3, 3), > + [F_LED1_CURR] = REG_FIELD(MT6372_REG_RGB1_ISNK, 0, 3), > + [F_LED2_CURR] = REG_FIELD(MT6372_REG_RGB2_ISNK, 0, 3), > + [F_LED3_CURR] = REG_FIELD(MT6372_REG_RGB3_ISNK, 0, 3), > + [F_LED4_CURR] = REG_FIELD(MT6372_REG_RGB4_ISNK, 0, 3), > + [F_LED1_MODE] = REG_FIELD(MT6372_REG_RGB1_ISNK, 6, 7), > + [F_LED2_MODE] = REG_FIELD(MT6372_REG_RGB2_ISNK, 6, 7), > + [F_LED3_MODE] = REG_FIELD(MT6372_REG_RGB3_ISNK, 6, 7), > + [F_LED4_MODE] = REG_FIELD(MT6372_REG_RGB4_ISNK, 6, 7), > + [F_LED1_DUTY] = REG_FIELD(MT6372_REG_RGB1_DIM, 0, 7), > + [F_LED2_DUTY] = REG_FIELD(MT6372_REG_RGB2_DIM, 0, 7), > + [F_LED3_DUTY] = REG_FIELD(MT6372_REG_RGB3_DIM, 0, 7), > + [F_LED4_DUTY] = REG_FIELD(MT6372_REG_RGB4_DIM, 0, 7), > + [F_LED1_FREQ] = REG_FIELD(MT6372_REG_RGB12_FREQ, 5, 7), > + [F_LED2_FREQ] = REG_FIELD(MT6372_REG_RGB12_FREQ, 2, 4), > + [F_LED3_FREQ] = REG_FIELD(MT6372_REG_RGB34_FREQ, 5, 7), > + [F_LED4_FREQ] = 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] = { > + [R_LED123_CURR] = { 4000, 1, 6, 4000 }, > + [R_LED4_CURR] = { 2000, 1, 3, 2000 }, > + [R_LED_TRFON] = { 125, 0, 15, 200 }, > + [R_LED_TOFF] = { 250, 0, 15, 400 } > +}; > + > +static const struct linear_range mt6372_led_ranges[R_MAX_RANGES] = { > + [R_LED123_CURR] = { 2000, 1, 14, 2000 }, > + [R_LED4_CURR] = { 2000, 1, 14, 2000 }, > + [R_LED_TRFON] = { 125, 0, 15, 250 }, > + [R_LED_TOFF] = { 250, 0, 15, 500 } > +}; > + > +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 int led_no, unsigned int level) > +{ > + enum mt6370_led_field sel_field; > + > + sel_field = 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 int led_no, unsigned int *level) > +{ > + enum mt6370_led_field sel_field; > + > + sel_field = 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) > +{ > + enum mt6370_led_field sel_field; > + unsigned int divisor, ratio; > + > + divisor = priv->is_mt6372 ? MT6372_PMW_DUTY : MT6370_PWM_DUTY; > + ratio = ton * divisor / (ton + toff); > + > + switch (led_no) { > + case MT6370_LED_ISNK1: > + sel_field = F_LED1_DUTY; > + break; > + case MT6370_LED_ISNK2: > + sel_field = F_LED2_DUTY; > + break; > + case MT6370_LED_ISNK3: > + sel_field = F_LED3_DUTY; > + break; > + default: > + sel_field = F_LED4_DUTY; > + } > + > + return regmap_field_write(priv->fields[sel_field], ratio); > +} > + > +static const unsigned int common_tfreqs[] = { > + 10000, 5000, 2000, 1000, 500, 200, 5, 1, > +}; > + > +static const unsigned int mt6372_tfreqs[] = { > + 8000, 4000, 2000, 1000, 500, 250, 8, 4, > +}; > + > +static int mt6370_set_led_freq(struct mt6370_priv *priv, unsigned int led_no, > + unsigned int ton, unsigned int toff) > +{ > + enum mt6370_led_field sel_field; > + const unsigned int *tfreq; > + unsigned int tfreq_len, tsum; > + int i; > +
...so, if you have pdata, here you'll do:
struct mt6370_pdata *pdata = priv->pdata;
> + if (priv->is_mt6372) { > + tfreq = mt6372_tfreqs; > + tfreq_len = ARRAY_SIZE(mt6372_tfreqs); > + } else { > + tfreq = common_tfreqs; > + tfreq_len = ARRAY_SIZE(common_tfreqs); > + } > + > + tsum = ton + toff; > + > + if (tsum > tfreq[0] || tsum < tfreq[tfreq_len - 1])
if (tsum > pdata->tfreq[0] || tsum < pdata->tfreq[pdata->tfreq_len - 1])
( etc etc etc )
> + return -EOPNOTSUPP; > + > + for (i = 0; i < tfreq_len; i++) { > + if (tsum >= tfreq[i]) > + break; > + } > + > + switch (led_no) { > + case MT6370_LED_ISNK1: > + sel_field = F_LED1_FREQ; > + break; > + case MT6370_LED_ISNK2: > + sel_field = F_LED2_FREQ; > + break; > + case MT6370_LED_ISNK3: > + sel_field = F_LED3_FREQ; > + break; > + default: > + sel_field = F_LED4_FREQ; > + } > + > + return regmap_field_write(priv->fields[sel_field], i); > +} > + > +static void mt6370_get_breath_reg_base(struct mt6370_priv *priv, > + unsigned int led_no, unsigned int *base) > +{
if (pdata->reg_rgb_chrind_tr < 0) { *base = pdata->reg_rgb1_tr + led_no * 3; return; }
> + if (priv->is_mt6372) { > + *base = MT6372_REG_RGB1_TR + led_no * 3; > + return; > + } > + > + switch (led_no) { > + case MT6370_LED_ISNK1: > + case MT6370_LED_ISNK2: > + case MT6370_LED_ISNK3: > + *base = MT6370_REG_RGB1_TR + led_no * 3; > + break; > + default: > + *base = MT6370_REG_RGB_CHRIND_TR; > + } > +} > + > +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; > + u8 val[P_MAX_PATTERNS / 2] = {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 = 0; i < P_MAX_PATTERNS; i++) { > + curr = pattern + i; > + > + sel_range = i == P_LED_TOFF ? R_LED_TOFF : R_LED_TRFON; > + > + linear_range_get_selector_within(priv->ranges + sel_range, > + curr->delta_t, &sel); > + > + val[i / 2] |= sel << (4 * ((i + 1) % 2)); > + } > + > + memcpy(pattern_val, val, 3); > + 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 = F_LED1_MODE; > + break; > + case MT6370_LED_ISNK2: > + sel_field = F_LED2_MODE; > + break; > + case MT6370_LED_ISNK3: > + sel_field = F_LED3_MODE; > + break; > + default: > + sel_field = F_LED4_MODE; > + } > + > + return regmap_field_write(priv->fields[sel_field], mode); > +} > + > +static int mt6370_mc_brightness_set(struct led_classdev *lcdev, > + enum led_brightness level) > +{ > + struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev); > + struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc); > + struct mt6370_priv *priv = 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 = regmap_field_read(priv->fields[F_RGB_EN], &enable); > + if (ret) > + goto out; > + > + disable = enable; > + > + for (i = 0; i < mccdev->num_colors; i++) { > + u32 brightness; > + > + subled = mccdev->subled_info + i; > + brightness = min(subled->brightness, lcdev->max_brightness); > + disable &= ~MT6370_CHEN_BIT(subled->channel); > + > + if (level == LED_OFF) { > + enable &= ~MT6370_CHEN_BIT(subled->channel); > + > + ret = mt6370_set_led_mode(priv, subled->channel, > + MT6370_LED_REG_MODE); > + if (ret) > + goto out; > + > + continue; > + } > + > + if (brightness == LED_OFF) { > + enable &= ~MT6370_CHEN_BIT(subled->channel); > + continue; > + } > + > + enable |= MT6370_CHEN_BIT(subled->channel); > + > + ret = mt6370_set_led_brightness(priv, subled->channel, > + brightness); > + if (ret) > + goto out; > + } > + > + ret = regmap_field_write(priv->fields[F_RGB_EN], disable); > + if (ret) > + goto out; > + > + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); > + > +out: > + 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 = lcdev_to_mccdev(lcdev); > + struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc); > + struct mt6370_priv *priv = led->priv; > + struct mc_subled *subled; > + unsigned int enable, disable; > + int i, ret; > + > + mutex_lock(&priv->lock); > + > + if (!*delay_on && !*delay_off) > + *delay_on = *delay_off = 500; > + > + ret = regmap_field_read(priv->fields[F_RGB_EN], &enable); > + if (ret) > + goto out; > + > + disable = enable; > + > + for (i = 0; i < mccdev->num_colors; i++) { > + subled = mccdev->subled_info + i; > + > + disable &= ~MT6370_CHEN_BIT(subled->channel); > + > + ret = mt6370_set_led_duty(priv, subled->channel, *delay_on, > + *delay_off); > + if (ret) > + goto out; > + > + ret = mt6370_set_led_freq(priv, subled->channel, *delay_on, > + *delay_off); > + if (ret) > + goto out; > + > + ret = mt6370_set_led_mode(priv, subled->channel, > + MT6370_LED_PWM_MODE); > + if (ret) > + goto out; > + } > + > + /* Toggle to make pattern timing the same */ > + ret = regmap_field_write(priv->fields[F_RGB_EN], disable); > + if (ret) > + goto out; > + > + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); > + > +out: > + mutex_unlock(&priv->lock); > + > + return ret; > +} > + > +static int mt6370_mc_pattern_set(struct led_classdev *lcdev, > + struct led_pattern *pattern, u32 len, int repeat) > +{ > + struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev); > + struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc); > + struct mt6370_priv *priv = 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 = mt6370_gen_breath_pattern(priv, pattern, len, params, > + sizeof(params)); > + if (ret) > + goto out; > + > + ret = regmap_field_read(priv->fields[F_RGB_EN], &enable); > + if (ret) > + goto out; > + > + disable = enable; > + > + for (i = 0; i < mccdev->num_colors; i++) { > + subled = mccdev->subled_info + i; > + > + mt6370_get_breath_reg_base(priv, subled->channel, ®_base); > + disable &= ~MT6370_CHEN_BIT(subled->channel); > + > + ret = regmap_raw_write(priv->regmap, reg_base, params, > + sizeof(params)); > + if (ret) > + goto out; > + > + ret = mt6370_set_led_mode(priv, subled->channel, > + MT6370_LED_BREATH_MODE); > + if (ret) > + goto out; > + } > + > + /* Toggle to make pattern timing be the same */ > + ret = regmap_field_write(priv->fields[F_RGB_EN], disable); > + if (ret) > + goto out; > + > + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); > + > +out: > + mutex_unlock(&priv->lock); > + > + return ret; > +} > + > +static inline int mt6370_mc_pattern_clear(struct led_classdev *lcdev) > +{ > + struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev); > + struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc); > + struct mt6370_priv *priv = led->priv; > + struct mc_subled *subled; > + int i, ret = 0; > + > + mutex_lock(&led->priv->lock); > + > + for (i = 0; i < mccdev->num_colors; i++) { > + subled = mccdev->subled_info + i; > + > + ret = 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 = container_of(lcdev, struct mt6370_led, isink); > + struct mt6370_priv *priv = led->priv; > + unsigned int enable; > + int ret; > + > + mutex_lock(&priv->lock); > + > + ret = regmap_field_read(priv->fields[F_RGB_EN], &enable); > + if (ret) > + goto out; > + > + if (level == LED_OFF) { > + enable &= ~MT6370_CHEN_BIT(led->index); > + > + ret = mt6370_set_led_mode(priv, led->index, > + MT6370_LED_REG_MODE); > + if (ret) > + goto out; > + > + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); > + } else { > + enable |= MT6370_CHEN_BIT(led->index); > + > + ret = mt6370_set_led_brightness(priv, led->index, level); > + if (ret) > + goto out; > + > + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); > + } > + > +out: > + 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 = container_of(lcdev, struct mt6370_led, isink); > + struct mt6370_priv *priv = led->priv; > + int ret; > + > + mutex_lock(&priv->lock); > + > + if (!*delay_on && !*delay_off) > + *delay_on = *delay_off = 500; > + > + ret = mt6370_set_led_duty(priv, led->index, *delay_on, *delay_off); > + if (ret) > + goto out; > + > + ret = mt6370_set_led_freq(priv, led->index, *delay_on, *delay_off); > + if (ret) > + goto out; > + > + ret = mt6370_set_led_mode(priv, led->index, MT6370_LED_PWM_MODE); > + > +out: > + 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 = container_of(lcdev, struct mt6370_led, isink); > + struct mt6370_priv *priv = led->priv; > + unsigned int reg_base; > + u8 params[P_MAX_PATTERNS / 2]; > + int ret; > + > + mutex_lock(&priv->lock); > + > + ret = mt6370_gen_breath_pattern(priv, pattern, len, params, > + sizeof(params)); > + if (ret) > + goto out; > + > + mt6370_get_breath_reg_base(priv, led->index, ®_base); > + > + ret = regmap_raw_write(priv->regmap, reg_base, params, sizeof(params)); > + if (ret) > + goto out; > + > + ret = mt6370_set_led_mode(priv, led->index, MT6370_LED_BREATH_MODE); > + > +out: > + mutex_unlock(&priv->lock); > + > + return ret; > +} > + > +static inline int mt6370_isnk_pattern_clear(struct led_classdev *lcdev) > +{ > + struct mt6370_led *led = container_of(lcdev, struct mt6370_led, isink); > + struct mt6370_priv *priv = led->priv; > + int ret; > + > + mutex_lock(&led->priv->lock); > + ret = mt6370_set_led_mode(priv, led->index, MT6370_LED_REG_MODE); > + mutex_unlock(&led->priv->lock); > + > + return ret; > +} > + > +static int mt6370_init_led_properties(struct mt6370_led *led, > + struct led_init_data *init_data) > +{ > + struct mt6370_priv *priv = led->priv; > + struct led_classdev *lcdev; > + struct fwnode_handle *child; > + enum mt6370_led_ranges sel_range; > + u32 max_uA, max_level; > + const char * const states[] = { "off", "keep", "on" }; > + const char *stat_str; > + int ret; > + > + if (led->index == MT6370_VIRTUAL_MULTICOLOR) { > + struct mc_subled *sub_led; > + u32 num_color = 0; > + > + sub_led = devm_kzalloc(priv->dev, > + sizeof(*sub_led) * MC_CHANNEL_NUM, > + GFP_KERNEL); > + if (!sub_led) > + return -ENOMEM; > + > + fwnode_for_each_child_node(init_data->fwnode, child) { > + u32 reg, color; > + > + ret = fwnode_property_read_u32(child, "reg", ®); > + if (ret || reg > MT6370_LED_ISNK3 || > + priv->leds_active & BIT(reg)) > + return -EINVAL; > + > + ret = fwnode_property_read_u32(child, "color", &color); > + if (ret) { > + dev_err(priv->dev, > + "led %d, no color specified\n", > + led->index); > + return ret; > + } > + > + priv->leds_active |= BIT(reg); > + sub_led[num_color].color_index = color; > + sub_led[num_color].channel = reg; > + num_color++; > + } > + > + if (num_color < 2) { > + dev_err(priv->dev, > + "Multicolor must include 2 or more led channel\n"); > + return -EINVAL; > + } > + > + led->mc.num_colors = num_color; > + led->mc.subled_info = sub_led; > + > + lcdev = &led->mc.led_cdev; > + lcdev->brightness_set_blocking = mt6370_mc_brightness_set; > + lcdev->blink_set = mt6370_mc_blink_set; > + lcdev->pattern_set = mt6370_mc_pattern_set; > + lcdev->pattern_clear = mt6370_mc_pattern_clear; > + } else { > + lcdev = &led->isink; > + lcdev->brightness_set_blocking = mt6370_isnk_brightness_set; > + lcdev->blink_set = mt6370_isnk_blink_set; > + lcdev->pattern_set = mt6370_isnk_pattern_set; > + lcdev->pattern_clear = mt6370_isnk_pattern_clear; > + } > + > + ret = fwnode_property_read_u32(init_data->fwnode, "led-max-microamp", > + &max_uA); > + if (ret) { > + dev_warn(priv->dev, > + "Not specified led-max-microamp, config to the minimum\n"); > + max_uA = 0; > + } > + > + if (led->index == MT6370_LED_ISNK4) > + sel_range = R_LED4_CURR; > + else > + sel_range = R_LED123_CURR; > + > + linear_range_get_selector_within(priv->ranges + sel_range, max_uA, > + &max_level); > + > + lcdev->max_brightness = max_level; > + > + fwnode_property_read_string(init_data->fwnode, "linux,default-trigger", > + &lcdev->default_trigger); > + > + if (!fwnode_property_read_string(init_data->fwnode, "default-state", > + &stat_str)) { > + ret = match_string(states, ARRAY_SIZE(states), stat_str); > + if (ret < 0) > + ret = STATE_OFF; > + > + led->default_state = ret; > + } > + > + return 0; > +} > + > +static int mt6370_isnk_init_default_state(struct mt6370_led *led) > +{ > + struct mt6370_priv *priv = led->priv; > + unsigned int enable, level; > + int ret; > + > + ret = mt6370_get_led_brightness(priv, led->index, &level); > + if (ret) > + return ret; > + > + ret = regmap_field_read(priv->fields[F_RGB_EN], &enable); > + if (ret) > + return ret; > + > + if (!(enable & MT6370_CHEN_BIT(led->index))) > + level = LED_OFF; > + > + switch (led->default_state) { > + case STATE_ON: > + led->isink.brightness = led->isink.max_brightness; > + break; > + case STATE_KEEP: > + led->isink.brightness = min(level, led->isink.max_brightness); > + break; > + default: > + led->isink.brightness = LED_OFF; > + } > + > + return mt6370_isnk_brightness_set(&led->isink, led->isink.brightness); > +} > + > +static int mt6370_led_register(struct device *parent, struct mt6370_led *led, > + struct led_init_data *init_data) > +{ > + struct mt6370_priv *priv = led->priv; > + int ret; > + > + if (led->index == MT6370_VIRTUAL_MULTICOLOR) { > + ret = mt6370_mc_brightness_set(&led->mc.led_cdev, LED_OFF); > + if (ret) { > + dev_err(parent, "Couldn't set multicolor brightness\n"); > + return ret; > + } > + > + ret = devm_led_classdev_multicolor_register_ext(parent, > + &led->mc, > + init_data); > + if (ret) { > + dev_err(parent, "Couldn't register multicolor\n"); > + return ret; > + } > + } else { > + if (led->index == MT6370_LED_ISNK4) { > + ret = regmap_field_write(priv->fields[F_CHGIND_EN], 1); > + if (ret) { > + dev_err(parent, "Failed to set CHRIND to SW\n"); > + return ret; > + } > + } > + > + ret = mt6370_isnk_init_default_state(led); > + if (ret) { > + dev_err(parent, "Failed to init %d isnk state\n", > + led->index); > + return ret; > + } > + > + ret = devm_led_classdev_register_ext(parent, &led->isink, > + init_data); > + if (ret) { > + dev_err(parent, "Couldn't register isink %d\n", > + led->index); > + return ret; > + } > + } > + > + return 0; > +} > + > +static int mt6370_check_vendor_info(struct mt6370_priv *priv) > +{ > + unsigned int devinfo, vid; > + int ret; > + > + ret = regmap_read(priv->regmap, MT6370_REG_DEV_INFO, &devinfo); > + if (ret) > + return ret; > + > + vid = FIELD_GET(MT6370_VENID_MASK, devinfo); > + if (vid == 0x9 || vid == 0xb) { > + priv->reg_fields = mt6372_reg_fields; > + priv->ranges = mt6372_led_ranges; > + priv->is_mt6372 = true;
priv->pdata = &mt6372_pdata;
> + } else { > + priv->reg_fields = common_reg_fields; > + priv->ranges = common_led_ranges;
priv->pdata = &mt6370_pdata;
> + } > + > + return 0; > +}
Regards, Angelo
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