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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc 
 kernel/drivers/mfd/rk808.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * MFD core driver for Rockchip RK808/RK818
34  *
....@@ -9,15 +10,6 @@
910  * Copyright (C) 2016 PHYTEC Messtechnik GmbH
1011  *
1112  * Author: Wadim Egorov <w.egorov@phytec.de>
12
- *
13
- * This program is free software; you can redistribute it and/or modify it
14
- * under the terms and conditions of the GNU General Public License,
15
- * version 2, as published by the Free Software Foundation.
16
- *
17
- * This program is distributed in the hope it will be useful, but WITHOUT
18
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
20
- * more details.
2113  */
2214 
2315 #include <linux/i2c.h>
....@@ -167,53 +159,29 @@
167159 	.volatile_reg = rk817_is_volatile_reg,
168160 };
169161 
170
-static struct resource rtc_resources[] = {
171
-	{
172
-		.start  = RK808_IRQ_RTC_ALARM,
173
-		.end    = RK808_IRQ_RTC_ALARM,
174
-		.flags  = IORESOURCE_IRQ,
175
-	}
162
+static const struct resource rtc_resources[] = {
163
+	DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
176164 };
177165 
178
-static struct resource rk816_rtc_resources[] = {
179
-	{
180
-		.start  = RK816_IRQ_RTC_ALARM,
181
-		.end    = RK816_IRQ_RTC_ALARM,
182
-		.flags  = IORESOURCE_IRQ,
183
-	}
166
+static const struct resource rk816_rtc_resources[] = {
167
+	DEFINE_RES_IRQ(RK816_IRQ_RTC_ALARM),
184168 };
185169 
186
-static struct resource rk817_rtc_resources[] = {
170
+static const struct resource rk817_rtc_resources[] = {
187171 	DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM),
188172 };
189173 
190
-static struct resource rk805_key_resources[] = {
191
-	{
192
-		.start  = RK805_IRQ_PWRON_FALL,
193
-		.end    = RK805_IRQ_PWRON_FALL,
194
-		.flags  = IORESOURCE_IRQ,
195
-	},
196
-	{
197
-		.start  = RK805_IRQ_PWRON_RISE,
198
-		.end    = RK805_IRQ_PWRON_RISE,
199
-		.flags  = IORESOURCE_IRQ,
200
-	}
174
+static const struct resource rk805_key_resources[] = {
175
+	DEFINE_RES_IRQ(RK805_IRQ_PWRON_FALL),
176
+	DEFINE_RES_IRQ(RK805_IRQ_PWRON_RISE),
201177 };
202178 
203
-static struct resource rk816_pwrkey_resources[] = {
204
-	{
205
-		.start  = RK816_IRQ_PWRON_FALL,
206
-		.end    = RK816_IRQ_PWRON_FALL,
207
-		.flags  = IORESOURCE_IRQ,
208
-	},
209
-	{
210
-		.start  = RK816_IRQ_PWRON_RISE,
211
-		.end    = RK816_IRQ_PWRON_RISE,
212
-		.flags  = IORESOURCE_IRQ,
213
-	},
179
+static const struct resource rk816_pwrkey_resources[] = {
180
+	DEFINE_RES_IRQ(RK816_IRQ_PWRON_FALL),
181
+	DEFINE_RES_IRQ(RK816_IRQ_PWRON_RISE),
214182 };
215183 
216
-static struct resource rk817_pwrkey_resources[] = {
184
+static const struct resource rk817_pwrkey_resources[] = {
217185 	DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL),
218186 	DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE),
219187 };
....@@ -613,7 +581,7 @@
613581 	REGMAP_IRQ_REG_LINE(23, 8)
614582 };
615583 
616
-static struct regmap_irq_chip rk805_irq_chip = {
584
+static const struct regmap_irq_chip rk805_irq_chip = {
617585 	.name = "rk805",
618586 	.irqs = rk805_irqs,
619587 	.num_irqs = ARRAY_SIZE(rk805_irqs),
....@@ -668,7 +636,7 @@
668636 	},
669637 };
670638 
671
-static struct regmap_irq_chip rk816_irq_chip = {
639
+static const struct regmap_irq_chip rk816_irq_chip = {
672640 	.name = "rk816",
673641 	.irqs = rk816_irqs,
674642 	.num_irqs = ARRAY_SIZE(rk816_irqs),
....@@ -680,7 +648,7 @@
680648 	.init_ack_masked = true,
681649 };
682650 
683
-static struct regmap_irq_chip rk816_battery_irq_chip = {
651
+static const struct regmap_irq_chip rk816_battery_irq_chip = {
684652 	.name = "rk816_battery",
685653 	.irqs = rk816_battery_irqs,
686654 	.num_irqs = ARRAY_SIZE(rk816_battery_irqs),
....@@ -691,7 +659,7 @@
691659 	.init_ack_masked = true,
692660 };
693661 
694
-static struct regmap_irq_chip rk817_irq_chip = {
662
+static const struct regmap_irq_chip rk817_irq_chip = {
695663 	.name = "rk817",
696664 	.irqs = rk817_irqs,
697665 	.num_irqs = ARRAY_SIZE(rk817_irqs),
....@@ -719,21 +687,6 @@
719687 static struct rk808_reg_data *suspend_reg, *resume_reg;
720688 static int suspend_reg_num, resume_reg_num;
721689 
722
-static void rk805_device_shutdown(void)
723
-{
724
-	int ret;
725
-	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
726
-
727
-	if (!rk808)
728
-		return;
729
-
730
-	ret = regmap_update_bits(rk808->regmap,
731
-				 RK805_DEV_CTRL_REG,
732
-				 DEV_OFF, DEV_OFF);
733
-	if (ret)
734
-		dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
735
-}
736
-
737690 static void rk805_device_shutdown_prepare(void)
738691 {
739692 	int ret;
....@@ -749,56 +702,18 @@
749702 		dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
750703 }
751704 
752
-static void rk808_device_shutdown(void)
753
-{
754
-	int ret;
755
-	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
756
-
757
-	if (!rk808)
758
-		return;
759
-
760
-	ret = regmap_update_bits(rk808->regmap,
761
-				 RK808_DEVCTRL_REG,
762
-				 DEV_OFF_RST, DEV_OFF_RST);
763
-	if (ret)
764
-		dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
765
-}
766
-
767
-static void rk816_device_shutdown(void)
768
-{
769
-	int ret;
770
-	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
771
-
772
-	if (!rk808)
773
-		return;
774
-
775
-	ret = regmap_update_bits(rk808->regmap,
776
-				 RK816_DEV_CTRL_REG,
777
-				 DEV_OFF, DEV_OFF);
778
-	if (ret)
779
-		dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
780
-}
781
-
782705 static void rk817_shutdown_prepare(void)
783706 {
784707 	int ret;
785708 	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
786709 
787
-	/* close int when power off */
710
+	/* close rtc int when power off */
788711 	regmap_update_bits(rk808->regmap,
789712 			   RK817_INT_STS_MSK_REG0,
790
-			   0xff, 0xff);
791
-	regmap_update_bits(rk808->regmap,
792
-			   RK817_INT_STS_MSK_REG1,
793
-			   0xff, 0xff);
794
-	regmap_update_bits(rk808->regmap,
795
-			   RK817_INT_STS_MSK_REG2,
796
-			   0xff, 0xff);
713
+			   (0x3 << 5), (0x3 << 5));
797714 	regmap_update_bits(rk808->regmap,
798715 			   RK817_RTC_INT_REG,
799716 			   (0x3 << 2), (0x0 << 2));
800
-
801
-	dev_info(&rk808_i2c_client->dev, "disabled int when device shutdown!\n");
802717 
803718 	if (rk808->pins && rk808->pins->p && rk808->pins->power_off) {
804719 		ret = regmap_update_bits(rk808->regmap,
....@@ -832,17 +747,34 @@
832747 	mdelay(2);
833748 }
834749 
835
-static void rk818_device_shutdown(void)
750
+static void rk8xx_device_shutdown(void)
836751 {
837752 	int ret;
753
+	unsigned int reg, bit;
838754 	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
839755 
840
-	if (!rk808)
756
+	switch (rk808->variant) {
757
+	case RK805_ID:
758
+		reg = RK805_DEV_CTRL_REG;
759
+		bit = DEV_OFF;
760
+		break;
761
+	case RK808_ID:
762
+		reg = RK808_DEVCTRL_REG,
763
+		bit = DEV_OFF_RST;
764
+		break;
765
+	case RK816_ID:
766
+		reg = RK816_DEV_CTRL_REG;
767
+		bit = DEV_OFF;
768
+		break;
769
+	case RK818_ID:
770
+		reg = RK818_DEVCTRL_REG;
771
+		bit = DEV_OFF;
772
+		break;
773
+	default:
841774 		return;
775
+	}
842776 
843
-	ret = regmap_update_bits(rk808->regmap,
844
-				 RK818_DEVCTRL_REG,
845
-				 DEV_OFF, DEV_OFF);
777
+	ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
846778 	if (ret)
847779 		dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
848780 }
....@@ -1205,6 +1137,7 @@
12051137 	void (*of_property_prepare_fn)(struct rk808 *rk808,
12061138 				       struct device *dev) = NULL;
12071139 	int (*pinctrl_init)(struct device *dev, struct rk808 *rk808) = NULL;
1140
+	void (*device_shutdown_fn)(void) = NULL;
12081141 
12091142 	rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
12101143 	if (!rk808)
....@@ -1251,7 +1184,7 @@
12511184 		suspend_reg_num = ARRAY_SIZE(rk805_suspend_reg);
12521185 		resume_reg = rk805_resume_reg;
12531186 		resume_reg_num = ARRAY_SIZE(rk805_resume_reg);
1254
-		rk808->pm_pwroff_fn = rk805_device_shutdown;
1187
+		device_shutdown_fn = rk8xx_device_shutdown;
12551188 		rk808->pm_pwroff_prep_fn = rk805_device_shutdown_prepare;
12561189 		break;
12571190 	case RK808_ID:
....@@ -1261,7 +1194,7 @@
12611194 		nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
12621195 		cells = rk808s;
12631196 		nr_cells = ARRAY_SIZE(rk808s);
1264
-		rk808->pm_pwroff_fn = rk808_device_shutdown;
1197
+		device_shutdown_fn = rk8xx_device_shutdown;
12651198 		break;
12661199 	case RK816_ID:
12671200 		rk808->regmap_cfg = &rk816_regmap_config;
....@@ -1277,7 +1210,7 @@
12771210 		suspend_reg_num = ARRAY_SIZE(rk816_suspend_reg);
12781211 		resume_reg = rk816_resume_reg;
12791212 		resume_reg_num = ARRAY_SIZE(rk816_resume_reg);
1280
-		rk808->pm_pwroff_fn = rk816_device_shutdown;
1213
+		device_shutdown_fn = rk8xx_device_shutdown;
12811214 		break;
12821215 	case RK818_ID:
12831216 		rk808->regmap_cfg = &rk818_regmap_config;
....@@ -1292,7 +1225,7 @@
12921225 		suspend_reg_num = ARRAY_SIZE(rk818_suspend_reg);
12931226 		resume_reg = rk818_resume_reg;
12941227 		resume_reg_num = ARRAY_SIZE(rk818_resume_reg);
1295
-		rk808->pm_pwroff_fn = rk818_device_shutdown;
1228
+		device_shutdown_fn = rk8xx_device_shutdown;
12961229 		break;
12971230 	case RK809_ID:
12981231 	case RK817_ID:
....@@ -1402,10 +1335,10 @@
14021335 		if (!pm_power_off_prepare)
14031336 			pm_power_off_prepare = rk808->pm_pwroff_prep_fn;
14041337 
1405
-		if (rk808->pm_pwroff_fn) {
1338
+		if (device_shutdown_fn) {
14061339 			register_syscore_ops(&rk808_syscore_ops);
14071340 			/* power off system in the syscore shutdown ! */
1408
-			pm_shutdown = rk808->pm_pwroff_fn;
1341
+			pm_shutdown = device_shutdown_fn;
14091342 		}
14101343 	}
14111344 
....@@ -1433,7 +1366,6 @@
14331366 	struct rk808 *rk808 = i2c_get_clientdata(client);
14341367 
14351368 	regmap_del_irq_chip(client->irq, rk808->irq_data);
1436
-	mfd_remove_devices(&client->dev);
14371369 
14381370 	/**
14391371 	 * pm_power_off may points to a function from another module.
....@@ -1474,6 +1406,12 @@
14741406 	}
14751407 
14761408 	switch (rk808->variant) {
1409
+	case RK805_ID:
1410
+		ret = regmap_update_bits(rk808->regmap,
1411
+					 RK805_GPIO_IO_POL_REG,
1412
+					 SLP_SD_MSK,
1413
+					 SLEEP_FUN);
1414
+		break;
14771415 	case RK809_ID:
14781416 	case RK817_ID:
14791417 		if (rk808->pins && rk808->pins->p && rk808->pins->sleep) {