linux-kernel - [PATCH 8/8] regulator: stpmic1: Add active discharge support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 19 Feb 2019 10:04:35 +0000
From:   Pascal PAILLET-LME <p.paillet@...com>
To:     "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "axel.lin@...ics.com" <axel.lin@...ics.com>
CC:     Pascal PAILLET-LME <p.paillet@...com>,
        "benjamin.gaignard@...aro.org" <benjamin.gaignard@...aro.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>
Subject: [PATCH 8/8] regulator: stpmic1: Add active discharge support

Add support for active discharge for USB power switches.

Signed-off-by: pascal paillet <p.paillet@...com>
---
 drivers/regulator/stpmic1_regulator.c | 68 ++++++++++++++++++++++++++++-------
 1 file changed, 55 insertions(+), 13 deletions(-)

diff --git a/drivers/regulator/stpmic1_regulator.c b/drivers/regulator/stpmic1_regulator.c
index 41128c4..f090614 100644
--- a/drivers/regulator/stpmic1_regulator.c
+++ b/drivers/regulator/stpmic1_regulator.c
@@ -177,11 +177,19 @@ enum {
 	.disable = regulator_disable_regmap,
 };
 
+static const struct regulator_ops stpmic1_boost_regul_ops = {
+	.is_enabled = regulator_is_enabled_regmap,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.set_over_current_protection = stpmic1_set_icc,
+};
+
 static const struct regulator_ops stpmic1_switch_regul_ops = {
 	.is_enabled = regulator_is_enabled_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
 	.set_over_current_protection = stpmic1_set_icc,
+	.set_active_discharge = regulator_set_active_discharge_regmap,
 };
 
 #define REG_LDO(ids, base) { \
@@ -282,7 +290,44 @@ enum {
 	.supply_name = #base, \
 }
 
-#define REG_SWITCH(ids, base, reg, mask, val) { \
+#define REG_BOOST(ids, base) { \
+	.name = #ids, \
+	.id = STPMIC1_##ids, \
+	.n_voltages = 1, \
+	.ops = &stpmic1_boost_regul_ops, \
+	.type = REGULATOR_VOLTAGE, \
+	.owner = THIS_MODULE, \
+	.min_uV = 0, \
+	.fixed_uV = 5000000, \
+	.enable_reg = BST_SW_CR, \
+	.enable_mask = BOOST_ENABLED, \
+	.enable_val = BOOST_ENABLED, \
+	.disable_val = 0, \
+	.enable_time = PMIC_ENABLE_TIME_US, \
+	.supply_name = #base, \
+}
+
+#define REG_VBUS_OTG(ids, base) { \
+	.name = #ids, \
+	.id = STPMIC1_##ids, \
+	.n_voltages = 1, \
+	.ops = &stpmic1_switch_regul_ops, \
+	.type = REGULATOR_VOLTAGE, \
+	.owner = THIS_MODULE, \
+	.min_uV = 0, \
+	.fixed_uV = 5000000, \
+	.enable_reg = BST_SW_CR, \
+	.enable_mask = USBSW_OTG_SWITCH_ENABLED, \
+	.enable_val = USBSW_OTG_SWITCH_ENABLED, \
+	.disable_val = 0, \
+	.enable_time = PMIC_ENABLE_TIME_US, \
+	.supply_name = #base, \
+	.active_discharge_reg = BST_SW_CR, \
+	.active_discharge_mask = VBUS_OTG_DISCHARGE, \
+	.active_discharge_on = VBUS_OTG_DISCHARGE, \
+}
+
+#define REG_SW_OUT(ids, base) { \
 	.name = #ids, \
 	.id = STPMIC1_##ids, \
 	.n_voltages = 1, \
@@ -291,12 +336,15 @@ enum {
 	.owner = THIS_MODULE, \
 	.min_uV = 0, \
 	.fixed_uV = 5000000, \
-	.enable_reg = (reg), \
-	.enable_mask = (mask), \
-	.enable_val = (val), \
+	.enable_reg = BST_SW_CR, \
+	.enable_mask = SWIN_SWOUT_ENABLED, \
+	.enable_val = SWIN_SWOUT_ENABLED, \
 	.disable_val = 0, \
 	.enable_time = PMIC_ENABLE_TIME_US, \
 	.supply_name = #base, \
+	.active_discharge_reg = BST_SW_CR, \
+	.active_discharge_mask = SW_OUT_DISCHARGE, \
+	.active_discharge_on = SW_OUT_DISCHARGE, \
 }
 
 static const struct stpmic1_regulator_cfg stpmic1_regulator_cfgs[] = {
@@ -376,23 +424,17 @@ enum {
 		.mask_reset_mask = BIT(6),
 	},
 	[STPMIC1_BOOST] = {
-		.desc = REG_SWITCH(BOOST, boost, BST_SW_CR,
-				   BOOST_ENABLED,
-				   BOOST_ENABLED),
+		.desc = REG_BOOST(BOOST, boost),
 		.icc_reg = BUCKS_ICCTO_CR,
 		.icc_mask = BIT(6),
 	},
 	[STPMIC1_VBUS_OTG] = {
-		.desc = REG_SWITCH(VBUS_OTG, pwr_sw1, BST_SW_CR,
-				   USBSW_OTG_SWITCH_ENABLED,
-				   USBSW_OTG_SWITCH_ENABLED),
+		.desc = REG_VBUS_OTG(VBUS_OTG, pwr_sw1),
 		.icc_reg = BUCKS_ICCTO_CR,
 		.icc_mask = BIT(4),
 	},
 	[STPMIC1_SW_OUT] = {
-		.desc = REG_SWITCH(SW_OUT, pwr_sw2, BST_SW_CR,
-				   SWIN_SWOUT_ENABLED,
-				   SWIN_SWOUT_ENABLED),
+		.desc = REG_SW_OUT(SW_OUT, pwr_sw2),
 		.icc_reg = BUCKS_ICCTO_CR,
 		.icc_mask = BIT(5),
 	},
-- 
1.9.1