Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) // Copyright (C) 2018 Spreadtrum Communications Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) /* PMIC global control register definition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #define SC27XX_MODULE_EN0	0xc08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #define SC27XX_CLK_EN0		0xc18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #define SC27XX_RGB_CTRL		0xebc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #define SC27XX_BLTC_EN		BIT(9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #define SC27XX_RTC_EN		BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #define SC27XX_RGB_PD		BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) /* Breathing light controller register definition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define SC27XX_LEDS_CTRL	0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define SC27XX_LEDS_PRESCALE	0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define SC27XX_LEDS_DUTY	0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define SC27XX_LEDS_CURVE0	0x0c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define SC27XX_LEDS_CURVE1	0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define SC27XX_CTRL_SHIFT	4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define SC27XX_LED_RUN		BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define SC27XX_LED_TYPE		BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define SC27XX_DUTY_SHIFT	8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define SC27XX_DUTY_MASK	GENMASK(15, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define SC27XX_MOD_MASK		GENMASK(7, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define SC27XX_CURVE_SHIFT	8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define SC27XX_CURVE_L_MASK	GENMASK(7, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define SC27XX_CURVE_H_MASK	GENMASK(15, 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define SC27XX_LEDS_OFFSET	0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define SC27XX_LEDS_MAX		3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define SC27XX_LEDS_PATTERN_CNT	4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) /* Stage duration step, in milliseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #define SC27XX_LEDS_STEP	125
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) /* Minimum and maximum duration, in milliseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define SC27XX_DELTA_T_MIN	SC27XX_LEDS_STEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define SC27XX_DELTA_T_MAX	(SC27XX_LEDS_STEP * 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) struct sc27xx_led {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct fwnode_handle *fwnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	struct led_classdev ldev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	struct sc27xx_led_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	u8 line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	bool active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) struct sc27xx_led_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	struct sc27xx_led leds[SC27XX_LEDS_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	u32 base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) #define to_sc27xx_led(ldev) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	container_of(ldev, struct sc27xx_led, ldev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) static int sc27xx_led_init(struct regmap *regmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	err = regmap_update_bits(regmap, SC27XX_MODULE_EN0, SC27XX_BLTC_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 				 SC27XX_BLTC_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	err = regmap_update_bits(regmap, SC27XX_CLK_EN0, SC27XX_RTC_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 				 SC27XX_RTC_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	return regmap_update_bits(regmap, SC27XX_RGB_CTRL, SC27XX_RGB_PD, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) static u32 sc27xx_led_get_offset(struct sc27xx_led *leds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	return leds->priv->base + SC27XX_LEDS_OFFSET * leds->line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) static int sc27xx_led_enable(struct sc27xx_led *leds, enum led_brightness value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	u32 base = sc27xx_led_get_offset(leds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	u32 ctrl_base = leds->priv->base + SC27XX_LEDS_CTRL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	u8 ctrl_shift = SC27XX_CTRL_SHIFT * leds->line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	struct regmap *regmap = leds->priv->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	err = regmap_update_bits(regmap, base + SC27XX_LEDS_DUTY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 				 SC27XX_DUTY_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 				 (value << SC27XX_DUTY_SHIFT) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 				 SC27XX_MOD_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	return regmap_update_bits(regmap, ctrl_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 			(SC27XX_LED_RUN | SC27XX_LED_TYPE) << ctrl_shift,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 			(SC27XX_LED_RUN | SC27XX_LED_TYPE) << ctrl_shift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static int sc27xx_led_disable(struct sc27xx_led *leds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	struct regmap *regmap = leds->priv->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	u32 ctrl_base = leds->priv->base + SC27XX_LEDS_CTRL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	u8 ctrl_shift = SC27XX_CTRL_SHIFT * leds->line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	return regmap_update_bits(regmap, ctrl_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 			(SC27XX_LED_RUN | SC27XX_LED_TYPE) << ctrl_shift, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static int sc27xx_led_set(struct led_classdev *ldev, enum led_brightness value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	struct sc27xx_led *leds = to_sc27xx_led(ldev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	mutex_lock(&leds->priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (value == LED_OFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		err = sc27xx_led_disable(leds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		err = sc27xx_led_enable(leds, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	mutex_unlock(&leds->priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static void sc27xx_led_clamp_align_delta_t(u32 *delta_t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	u32 v, offset, t = *delta_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	v = t + SC27XX_LEDS_STEP / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	v = clamp_t(u32, v, SC27XX_DELTA_T_MIN, SC27XX_DELTA_T_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	offset = v - SC27XX_DELTA_T_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	offset = SC27XX_LEDS_STEP * (offset / SC27XX_LEDS_STEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	*delta_t = SC27XX_DELTA_T_MIN + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static int sc27xx_led_pattern_clear(struct led_classdev *ldev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	struct sc27xx_led *leds = to_sc27xx_led(ldev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	struct regmap *regmap = leds->priv->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	u32 base = sc27xx_led_get_offset(leds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	u32 ctrl_base = leds->priv->base + SC27XX_LEDS_CTRL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	u8 ctrl_shift = SC27XX_CTRL_SHIFT * leds->line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	mutex_lock(&leds->priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	/* Reset the rise, high, fall and low time to zero. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	regmap_write(regmap, base + SC27XX_LEDS_CURVE0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	regmap_write(regmap, base + SC27XX_LEDS_CURVE1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	err = regmap_update_bits(regmap, ctrl_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 			(SC27XX_LED_RUN | SC27XX_LED_TYPE) << ctrl_shift, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	ldev->brightness = LED_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	mutex_unlock(&leds->priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static int sc27xx_led_pattern_set(struct led_classdev *ldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 				  struct led_pattern *pattern,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 				  u32 len, int repeat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	struct sc27xx_led *leds = to_sc27xx_led(ldev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	u32 base = sc27xx_led_get_offset(leds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	u32 ctrl_base = leds->priv->base + SC27XX_LEDS_CTRL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	u8 ctrl_shift = SC27XX_CTRL_SHIFT * leds->line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	struct regmap *regmap = leds->priv->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	 * Must contain 4 tuples to configure the rise time, high time, fall
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	 * time and low time to enable the breathing mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	if (len != SC27XX_LEDS_PATTERN_CNT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	mutex_lock(&leds->priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	sc27xx_led_clamp_align_delta_t(&pattern[0].delta_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	err = regmap_update_bits(regmap, base + SC27XX_LEDS_CURVE0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 				 SC27XX_CURVE_L_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 				 pattern[0].delta_t / SC27XX_LEDS_STEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	sc27xx_led_clamp_align_delta_t(&pattern[1].delta_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	err = regmap_update_bits(regmap, base + SC27XX_LEDS_CURVE1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 				 SC27XX_CURVE_L_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 				 pattern[1].delta_t / SC27XX_LEDS_STEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	sc27xx_led_clamp_align_delta_t(&pattern[2].delta_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	err = regmap_update_bits(regmap, base + SC27XX_LEDS_CURVE0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 				 SC27XX_CURVE_H_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 				 (pattern[2].delta_t / SC27XX_LEDS_STEP) <<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 				 SC27XX_CURVE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	sc27xx_led_clamp_align_delta_t(&pattern[3].delta_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	err = regmap_update_bits(regmap, base + SC27XX_LEDS_CURVE1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 				 SC27XX_CURVE_H_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 				 (pattern[3].delta_t / SC27XX_LEDS_STEP) <<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 				 SC27XX_CURVE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	err = regmap_update_bits(regmap, base + SC27XX_LEDS_DUTY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 				 SC27XX_DUTY_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 				 (pattern[1].brightness << SC27XX_DUTY_SHIFT) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 				 SC27XX_MOD_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	/* Enable the LED breathing mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	err = regmap_update_bits(regmap, ctrl_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 				 SC27XX_LED_RUN << ctrl_shift,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 				 SC27XX_LED_RUN << ctrl_shift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		ldev->brightness = pattern[1].brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	mutex_unlock(&leds->priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) static int sc27xx_led_register(struct device *dev, struct sc27xx_led_priv *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	err = sc27xx_led_init(priv->regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	for (i = 0; i < SC27XX_LEDS_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		struct sc27xx_led *led = &priv->leds[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		struct led_init_data init_data = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		if (!led->active)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		led->line = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		led->priv = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		led->ldev.brightness_set_blocking = sc27xx_led_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		led->ldev.pattern_set = sc27xx_led_pattern_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		led->ldev.pattern_clear = sc27xx_led_pattern_clear;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		led->ldev.default_trigger = "pattern";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		init_data.fwnode = led->fwnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		init_data.devicename = "sc27xx";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		init_data.default_label = ":";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		err = devm_led_classdev_register_ext(dev, &led->ldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 						     &init_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) static int sc27xx_led_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	struct device_node *np = dev_of_node(dev), *child;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	struct sc27xx_led_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	u32 base, count, reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	count = of_get_available_child_count(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	if (!count || count > SC27XX_LEDS_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	err = of_property_read_u32(np, "reg", &base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		dev_err(dev, "fail to get reg of property\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	platform_set_drvdata(pdev, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	mutex_init(&priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	priv->base = base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	priv->regmap = dev_get_regmap(dev->parent, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	if (!priv->regmap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		dev_err(dev, "failed to get regmap: %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	for_each_available_child_of_node(np, child) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		err = of_property_read_u32(child, "reg", &reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 			of_node_put(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 			mutex_destroy(&priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 		if (reg >= SC27XX_LEDS_MAX || priv->leds[reg].active) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 			of_node_put(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 			mutex_destroy(&priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 		priv->leds[reg].fwnode = of_fwnode_handle(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 		priv->leds[reg].active = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	err = sc27xx_led_register(dev, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		mutex_destroy(&priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) static int sc27xx_led_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	struct sc27xx_led_priv *priv = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	mutex_destroy(&priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static const struct of_device_id sc27xx_led_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	{ .compatible = "sprd,sc2731-bltc", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) MODULE_DEVICE_TABLE(of, sc27xx_led_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static struct platform_driver sc27xx_led_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		.name = "sprd-bltc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 		.of_match_table = sc27xx_led_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	.probe = sc27xx_led_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	.remove = sc27xx_led_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) module_platform_driver(sc27xx_led_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) MODULE_DESCRIPTION("Spreadtrum SC27xx breathing light controller driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) MODULE_AUTHOR("Xiaotong Lu <xiaotong.lu@spreadtrum.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) MODULE_AUTHOR("Baolin Wang <baolin.wang@linaro.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) MODULE_LICENSE("GPL v2");