Merge "leds: qpnp-flash-v2: Enable charger mitigation"

drivers/leds/leds-qpnp-flash-v2.c

@@ -127,11 +127,11 @@
 #define	FLASH_LED_LMH_MITIGATION_DISABLE	0
 #define	FLASH_LED_CHGR_MITIGATION_ENABLE	BIT(4)
 #define	FLASH_LED_CHGR_MITIGATION_DISABLE	0
-#define	FLASH_LED_MITIGATION_SEL_DEFAULT	2
+#define	FLASH_LED_LMH_MITIGATION_SEL_DEFAULT	2
 #define	FLASH_LED_MITIGATION_SEL_MAX		2
 #define	FLASH_LED_CHGR_MITIGATION_SEL_SHIFT	4
-#define	FLASH_LED_MITIGATION_THRSH_DEFAULT	0xA
+#define	FLASH_LED_CHGR_MITIGATION_THRSH_DEFAULT	0xA
-#define	FLASH_LED_MITIGATION_THRSH_MAX		0x1F
+#define	FLASH_LED_CHGR_MITIGATION_THRSH_MAX	0x1F
 #define	FLASH_LED_LMH_OCV_THRESH_DEFAULT_UV	3700000
 #define	FLASH_LED_LMH_RBATT_THRESH_DEFAULT_UOHM	400000
 #define	FLASH_LED_IRES_BASE			3
@@ -157,6 +157,12 @@
 /* notifier call chain for flash-led irqs */
 static ATOMIC_NOTIFIER_HEAD(irq_notifier_list);
 
+enum flash_charger_mitigation {
+	FLASH_DISABLE_CHARGER_MITIGATION,
+	FLASH_HW_CHARGER_MITIGATION_BY_ILED_THRSHLD,
+	FLASH_SW_CHARGER_MITIGATION,
+};
+
 enum flash_led_type {
 	FLASH_LED_TYPE_FLASH,
 	FLASH_LED_TYPE_TORCH,
@@ -181,6 +187,7 @@ struct flash_node_data {
 	int				ires_ua;
 	int				max_current;
 	int				current_ma;
+	int				prev_current_ma;
 	u8				duration;
 	u8				id;
 	u8				type;
@@ -260,6 +267,7 @@ struct qpnp_flash_led {
 	int				num_fnodes;
 	int				num_snodes;
 	int				enable;
+	int				total_current_ma;
 	u16				base;
 	bool				trigger_lmh;
 	bool				trigger_chgr;
@@ -486,10 +494,12 @@ static int qpnp_flash_led_init_settings(struct qpnp_flash_led *led)
 	if (rc < 0)
 		return rc;
 
+	val = led->pdata->chgr_mitigation_sel
+				<< FLASH_LED_CHGR_MITIGATION_SEL_SHIFT;
 	rc = qpnp_flash_led_masked_write(led,
 			FLASH_LED_REG_MITIGATION_SEL(led->base),
 			FLASH_LED_CHGR_MITIGATION_SEL_MASK,
-			led->pdata->chgr_mitigation_sel);
+			val);
 	if (rc < 0)
 		return rc;
 
@@ -875,10 +885,24 @@ static int qpnp_flash_led_get_max_avail_current(struct qpnp_flash_led *led)
 	return max_avail_current;
 }
 
+static void qpnp_flash_led_aggregate_max_current(struct flash_node_data *fnode)
+{
+	struct qpnp_flash_led *led = dev_get_drvdata(&fnode->pdev->dev);
+
+	if (fnode->current_ma)
+		led->total_current_ma += fnode->current_ma
+						- fnode->prev_current_ma;
+	else
+		led->total_current_ma -= fnode->prev_current_ma;
+
+	fnode->prev_current_ma = fnode->current_ma;
+}
+
 static void qpnp_flash_led_node_set(struct flash_node_data *fnode, int value)
 {
 	int prgm_current_ma = value;
 	int min_ma = fnode->ires_ua / 1000;
+	struct qpnp_flash_led *led = dev_get_drvdata(&fnode->pdev->dev);
 
 	if (value <= 0)
 		prgm_current_ma = 0;
@@ -891,6 +915,13 @@ static void qpnp_flash_led_node_set(struct flash_node_data *fnode, int value)
 	fnode->current_reg_val = CURRENT_MA_TO_REG_VAL(prgm_current_ma,
 					fnode->ires_ua);
 	fnode->led_on = prgm_current_ma != 0;
+
+	if (led->pdata->chgr_mitigation_sel == FLASH_SW_CHARGER_MITIGATION) {
+		qpnp_flash_led_aggregate_max_current(fnode);
+		led->trigger_chgr = false;
+		if (led->total_current_ma >= 1000)
+			led->trigger_chgr = true;
+	}
 }
 
 static int qpnp_flash_led_switch_disable(struct flash_switch_data *snode)
@@ -1158,10 +1189,6 @@ int qpnp_flash_led_prepare(struct led_trigger *trig, int options,
 		*max_current = rc;
 	}
 
-	led->trigger_chgr = false;
-	if (options & PRE_FLASH)
-		led->trigger_chgr = true;
-
 	return 0;
 }
 
@@ -1956,7 +1983,7 @@ static int qpnp_flash_led_parse_common_dt(struct qpnp_flash_led *led,
 		return rc;
 	}
 
-	led->pdata->lmh_mitigation_sel = FLASH_LED_MITIGATION_SEL_DEFAULT;
+	led->pdata->lmh_mitigation_sel = FLASH_LED_LMH_MITIGATION_SEL_DEFAULT;
 	rc = of_property_read_u32(node, "qcom,lmh-mitigation-sel", &val);
 	if (!rc) {
 		led->pdata->lmh_mitigation_sel = val;
@@ -1970,7 +1997,7 @@ static int qpnp_flash_led_parse_common_dt(struct qpnp_flash_led *led,
 		return -EINVAL;
 	}
 
-	led->pdata->chgr_mitigation_sel = FLASH_LED_MITIGATION_SEL_DEFAULT;
+	led->pdata->chgr_mitigation_sel = FLASH_SW_CHARGER_MITIGATION;
 	rc = of_property_read_u32(node, "qcom,chgr-mitigation-sel", &val);
 	if (!rc) {
 		led->pdata->chgr_mitigation_sel = val;
@@ -1984,9 +2011,7 @@ static int qpnp_flash_led_parse_common_dt(struct qpnp_flash_led *led,
 		return -EINVAL;
 	}
 
-	led->pdata->chgr_mitigation_sel <<= FLASH_LED_CHGR_MITIGATION_SEL_SHIFT;
+	led->pdata->iled_thrsh_val = FLASH_LED_CHGR_MITIGATION_THRSH_DEFAULT;
-
-	led->pdata->iled_thrsh_val = FLASH_LED_MITIGATION_THRSH_DEFAULT;
 	rc = of_property_read_u32(node, "qcom,iled-thrsh-ma", &val);
 	if (!rc) {
 		led->pdata->iled_thrsh_val = MITIGATION_THRSH_MA_TO_VAL(val);
@@ -1995,7 +2020,7 @@ static int qpnp_flash_led_parse_common_dt(struct qpnp_flash_led *led,
 		return rc;
 	}
 
-	if (led->pdata->iled_thrsh_val > FLASH_LED_MITIGATION_THRSH_MAX) {
+	if (led->pdata->iled_thrsh_val > FLASH_LED_CHGR_MITIGATION_THRSH_MAX) {
 		pr_err("Invalid iled_thrsh_val specified\n");
 		return -EINVAL;
 	}

include/linux/leds-qpnp-flash.h

@@ -1,4 +1,4 @@
-/* Copyright (c) 2016, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -18,7 +18,6 @@
 #define ENABLE_REGULATOR	BIT(0)
 #define DISABLE_REGULATOR	BIT(1)
 #define QUERY_MAX_CURRENT	BIT(2)
-#define PRE_FLASH		BIT(3)
 
 #define FLASH_LED_PREPARE_OPTIONS_MASK	GENMASK(3, 0)