Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) // Copyright (c) 2018 Mellanox Technologies. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) // Copyright (c) 2018 Vadim Pasternak <vadimp@mellanox.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/platform_data/mlxreg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) /* Codes for LEDs. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #define MLXREG_LED_OFFSET_BLINK_3HZ	0x01 /* Offset from solid: 3Hz blink */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define MLXREG_LED_OFFSET_BLINK_6HZ	0x02 /* Offset from solid: 6Hz blink */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define MLXREG_LED_IS_OFF		0x00 /* Off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define MLXREG_LED_RED_SOLID		0x05 /* Solid red */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define MLXREG_LED_GREEN_SOLID		0x0D /* Solid green */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define MLXREG_LED_AMBER_SOLID		0x09 /* Solid amber */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define MLXREG_LED_BLINK_3HZ		167 /* ~167 msec off/on - HW support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define MLXREG_LED_BLINK_6HZ		83 /* ~83 msec off/on - HW support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define MLXREG_LED_CAPABILITY_CLEAR	GENMASK(31, 8) /* Clear mask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28)  * struct mlxreg_led_data - led control data:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30)  * @data: led configuration data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31)  * @led_classdev: led class data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32)  * @base_color: base led color (other colors have constant offset from base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33)  * @led_data: led data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34)  * @data_parent: pointer to private device control data of parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) struct mlxreg_led_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	struct mlxreg_core_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	struct led_classdev led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	u8 base_color;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	void *data_parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	char led_cdev_name[MLXREG_CORE_LABEL_MAX_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define cdev_to_priv(c) container_of(c, struct mlxreg_led_data, led_cdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47)  * struct mlxreg_led_priv_data - platform private data:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49)  * @pdev: platform device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50)  * @pdata: platform data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51)  * @access_lock: mutex for attribute IO access;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) struct mlxreg_led_priv_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	struct platform_device *pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	struct mlxreg_core_platform_data *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	struct mutex access_lock; /* protect IO operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) mlxreg_led_store_hw(struct mlxreg_led_data *led_data, u8 vset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	struct mlxreg_led_priv_data *priv = led_data->data_parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	struct mlxreg_core_platform_data *led_pdata = priv->pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct mlxreg_core_data *data = led_data->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	u32 regval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	u32 nib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	 * Each LED is controlled through low or high nibble of the relevant
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	 * register byte. Register offset is specified by off parameter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	 * Parameter vset provides color code: 0x0 for off, 0x5 for solid red,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	 * 0x6 for 3Hz blink red, 0xd for solid green, 0xe for 3Hz blink
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	 * green.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	 * Parameter mask specifies which nibble is used for specific LED: mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	 * 0xf0 - lower nibble is to be used (bits from 0 to 3), mask 0x0f -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	 * higher nibble (bits from 4 to 7).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	mutex_lock(&priv->access_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	ret = regmap_read(led_pdata->regmap, data->reg, &regval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		goto access_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	nib = (ror32(data->mask, data->bit) == 0xf0) ? rol32(vset, data->bit) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	      rol32(vset, data->bit + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	regval = (regval & data->mask) | nib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	ret = regmap_write(led_pdata->regmap, data->reg, regval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) access_error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	mutex_unlock(&priv->access_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) static enum led_brightness
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) mlxreg_led_get_hw(struct mlxreg_led_data *led_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	struct mlxreg_led_priv_data *priv = led_data->data_parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	struct mlxreg_core_platform_data *led_pdata = priv->pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	struct mlxreg_core_data *data = led_data->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	u32 regval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	int err;
^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) 	 * Each LED is controlled through low or high nibble of the relevant
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	 * register byte. Register offset is specified by off parameter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	 * Parameter vset provides color code: 0x0 for off, 0x5 for solid red,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	 * 0x6 for 3Hz blink red, 0xd for solid green, 0xe for 3Hz blink
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	 * green.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	 * Parameter mask specifies which nibble is used for specific LED: mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	 * 0xf0 - lower nibble is to be used (bits from 0 to 3), mask 0x0f -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	 * higher nibble (bits from 4 to 7).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	err = regmap_read(led_pdata->regmap, data->reg, &regval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		dev_warn(led_data->led_cdev.dev, "Failed to get current brightness, error: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 			 err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		/* Assume the LED is OFF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		return LED_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	regval = regval & ~data->mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	regval = (ror32(data->mask, data->bit) == 0xf0) ? ror32(regval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		 data->bit) : ror32(regval, data->bit + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	if (regval >= led_data->base_color &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	    regval <= (led_data->base_color + MLXREG_LED_OFFSET_BLINK_6HZ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		return LED_FULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	return LED_OFF;
^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 int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) mlxreg_led_brightness_set(struct led_classdev *cled, enum led_brightness value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	struct mlxreg_led_data *led_data = cdev_to_priv(cled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		return mlxreg_led_store_hw(led_data, led_data->base_color);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		return mlxreg_led_store_hw(led_data, MLXREG_LED_IS_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static enum led_brightness
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) mlxreg_led_brightness_get(struct led_classdev *cled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	struct mlxreg_led_data *led_data = cdev_to_priv(cled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	return mlxreg_led_get_hw(led_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) mlxreg_led_blink_set(struct led_classdev *cled, unsigned long *delay_on,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		     unsigned long *delay_off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	struct mlxreg_led_data *led_data = cdev_to_priv(cled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	 * HW supports two types of blinking: full (6Hz) and half (3Hz).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	 * For delay on/off zero LED is setting to solid color. For others
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	 * combination blinking is to be controlled by the software timer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	if (!(*delay_on == 0 && *delay_off == 0) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	    !(*delay_on == MLXREG_LED_BLINK_3HZ &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	      *delay_off == MLXREG_LED_BLINK_3HZ) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	    !(*delay_on == MLXREG_LED_BLINK_6HZ &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	      *delay_off == MLXREG_LED_BLINK_6HZ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	if (*delay_on == MLXREG_LED_BLINK_6HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		err = mlxreg_led_store_hw(led_data, led_data->base_color +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 					  MLXREG_LED_OFFSET_BLINK_6HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	else if (*delay_on == MLXREG_LED_BLINK_3HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		err = mlxreg_led_store_hw(led_data, led_data->base_color +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 					  MLXREG_LED_OFFSET_BLINK_3HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		err = mlxreg_led_store_hw(led_data, led_data->base_color);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static int mlxreg_led_config(struct mlxreg_led_priv_data *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	struct mlxreg_core_platform_data *led_pdata = priv->pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	struct mlxreg_core_data *data = led_pdata->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	struct mlxreg_led_data *led_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	struct led_classdev *led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	enum led_brightness brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	u32 regval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	for (i = 0; i < led_pdata->counter; i++, data++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		led_data = devm_kzalloc(&priv->pdev->dev, sizeof(*led_data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 					GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		if (!led_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		if (data->capability) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 			err = regmap_read(led_pdata->regmap, data->capability,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 					  &regval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 				dev_err(&priv->pdev->dev, "Failed to query capability register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 				return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			if (!(regval & data->bit))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 				continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 			/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 			 * Field "bit" can contain one capability bit in 0 byte
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 			 * and offset bit in 1-3 bytes. Clear capability bit and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 			 * keep only offset bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 			 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 			data->bit &= MLXREG_LED_CAPABILITY_CLEAR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		led_cdev = &led_data->led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		led_data->data_parent = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		if (strstr(data->label, "red") ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		    strstr(data->label, "orange")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 			brightness = LED_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 			led_data->base_color = MLXREG_LED_RED_SOLID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		} else if (strstr(data->label, "amber")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 			brightness = LED_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 			led_data->base_color = MLXREG_LED_AMBER_SOLID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 			brightness = LED_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 			led_data->base_color = MLXREG_LED_GREEN_SOLID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		snprintf(led_data->led_cdev_name, sizeof(led_data->led_cdev_name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 			 "mlxreg:%s", data->label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		led_cdev->name = led_data->led_cdev_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		led_cdev->brightness = brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		led_cdev->max_brightness = LED_ON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		led_cdev->brightness_set_blocking =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 						mlxreg_led_brightness_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		led_cdev->brightness_get = mlxreg_led_brightness_get;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		led_cdev->blink_set = mlxreg_led_blink_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		led_cdev->flags = LED_CORE_SUSPENDRESUME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		led_data->data = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		err = devm_led_classdev_register(&priv->pdev->dev, led_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		if (led_cdev->brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			mlxreg_led_brightness_set(led_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 						  led_cdev->brightness);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		dev_info(led_cdev->dev, "label: %s, mask: 0x%02x, offset:0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 			 data->label, data->mask, data->reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static int mlxreg_led_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	struct mlxreg_core_platform_data *led_pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	struct mlxreg_led_priv_data *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	led_pdata = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	if (!led_pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		dev_err(&pdev->dev, "Failed to get platform data.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	mutex_init(&priv->access_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	priv->pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	priv->pdata = led_pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	return mlxreg_led_config(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) static int mlxreg_led_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	struct mlxreg_led_priv_data *priv = dev_get_drvdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	mutex_destroy(&priv->access_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static struct platform_driver mlxreg_led_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	    .name = "leds-mlxreg",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	.probe = mlxreg_led_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	.remove = mlxreg_led_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) module_platform_driver(mlxreg_led_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) MODULE_DESCRIPTION("Mellanox LED regmap driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) MODULE_LICENSE("Dual BSD/GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) MODULE_ALIAS("platform:leds-mlxreg");