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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/mfd/mt6397-core.c
..
..
@@ -1,46 +1,48 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (c) 2014 MediaTek Inc.
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  * Author: Flora Fu, MediaTek
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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6
 
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 #include <linux/interrupt.h>
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+#include <linux/ioport.h>
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 #include <linux/module.h>
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 #include <linux/of_device.h>
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 #include <linux/of_irq.h>
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 #include <linux/regmap.h>
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 #include <linux/mfd/core.h>
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-#include <linux/mfd/mt6397/core.h>
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 #include <linux/mfd/mt6323/core.h>
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-#include <linux/mfd/mt6397/registers.h>
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+#include <linux/mfd/mt6358/core.h>
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+#include <linux/mfd/mt6397/core.h>
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 #include <linux/mfd/mt6323/registers.h>
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+#include <linux/mfd/mt6358/registers.h>
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+#include <linux/mfd/mt6397/registers.h>
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+
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+#define MT6323_RTC_BASE		0x8000
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+#define MT6323_RTC_SIZE		0x40
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+
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+#define MT6358_RTC_BASE		0x0588
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+#define MT6358_RTC_SIZE		0x3c
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26
 
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 #define MT6397_RTC_BASE		0xe000
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 #define MT6397_RTC_SIZE		0x3e
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29
 
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-#define MT6323_CID_CODE		0x23
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-#define MT6391_CID_CODE		0x91
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-#define MT6397_CID_CODE		0x97
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+#define MT6323_PWRC_BASE	0x8000
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+#define MT6323_PWRC_SIZE	0x40
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+
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+static const struct resource mt6323_rtc_resources[] = {
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+	DEFINE_RES_MEM(MT6323_RTC_BASE, MT6323_RTC_SIZE),
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+	DEFINE_RES_IRQ(MT6323_IRQ_STATUS_RTC),
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+};
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+
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+static const struct resource mt6358_rtc_resources[] = {
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+	DEFINE_RES_MEM(MT6358_RTC_BASE, MT6358_RTC_SIZE),
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+	DEFINE_RES_IRQ(MT6358_IRQ_RTC),
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+};
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42
 
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 static const struct resource mt6397_rtc_resources[] = {
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-	{
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-		.start = MT6397_RTC_BASE,
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-		.end   = MT6397_RTC_BASE + MT6397_RTC_SIZE,
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-		.flags = IORESOURCE_MEM,
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-	},
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-	{
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-		.start = MT6397_IRQ_RTC,
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-		.end   = MT6397_IRQ_RTC,
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-		.flags = IORESOURCE_IRQ,
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-	},
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+	DEFINE_RES_MEM(MT6397_RTC_BASE, MT6397_RTC_SIZE),
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+	DEFINE_RES_IRQ(MT6397_IRQ_RTC),
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 };
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47
 
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 static const struct resource mt6323_keys_resources[] = {
..
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@@ -53,8 +55,17 @@
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 	DEFINE_RES_IRQ(MT6397_IRQ_HOMEKEY),
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 };
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57
 
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+static const struct resource mt6323_pwrc_resources[] = {
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+	DEFINE_RES_MEM(MT6323_PWRC_BASE, MT6323_PWRC_SIZE),
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+};
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+
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 static const struct mfd_cell mt6323_devs[] = {
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 	{
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+		.name = "mt6323-rtc",
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+		.num_resources = ARRAY_SIZE(mt6323_rtc_resources),
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+		.resources = mt6323_rtc_resources,
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+		.of_compatible = "mediatek,mt6323-rtc",
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+	}, {
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 		.name = "mt6323-regulator",
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 		.of_compatible = "mediatek,mt6323-regulator"
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 	}, {
..
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@@ -65,6 +76,26 @@
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 		.num_resources = ARRAY_SIZE(mt6323_keys_resources),
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 		.resources = mt6323_keys_resources,
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 		.of_compatible = "mediatek,mt6323-keys"
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+	}, {
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+		.name = "mt6323-pwrc",
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+		.num_resources = ARRAY_SIZE(mt6323_pwrc_resources),
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+		.resources = mt6323_pwrc_resources,
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+		.of_compatible = "mediatek,mt6323-pwrc"
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+	},
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+};
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+
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+static const struct mfd_cell mt6358_devs[] = {
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+	{
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+		.name = "mt6358-regulator",
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+		.of_compatible = "mediatek,mt6358-regulator"
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+	}, {
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+		.name = "mt6358-rtc",
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+		.num_resources = ARRAY_SIZE(mt6358_rtc_resources),
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+		.resources = mt6358_rtc_resources,
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+		.of_compatible = "mediatek,mt6358-rtc",
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+	}, {
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+		.name = "mt6358-sound",
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+		.of_compatible = "mediatek,mt6358-sound"
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 	},
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 };
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..
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@@ -94,182 +125,44 @@
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 	}
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 };
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127
 
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-static void mt6397_irq_lock(struct irq_data *data)
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-{
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-	struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
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-
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-	mutex_lock(&mt6397->irqlock);
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-}
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-
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-static void mt6397_irq_sync_unlock(struct irq_data *data)
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-{
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-	struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
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-
108
-	regmap_write(mt6397->regmap, mt6397->int_con[0],
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-		     mt6397->irq_masks_cur[0]);
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-	regmap_write(mt6397->regmap, mt6397->int_con[1],
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-		     mt6397->irq_masks_cur[1]);
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-
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-	mutex_unlock(&mt6397->irqlock);
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-}
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-
116
-static void mt6397_irq_disable(struct irq_data *data)
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-{
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-	struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
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-	int shift = data->hwirq & 0xf;
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-	int reg = data->hwirq >> 4;
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-
122
-	mt6397->irq_masks_cur[reg] &= ~BIT(shift);
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-}
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-
125
-static void mt6397_irq_enable(struct irq_data *data)
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-{
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-	struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
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-	int shift = data->hwirq & 0xf;
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-	int reg = data->hwirq >> 4;
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-
131
-	mt6397->irq_masks_cur[reg] |= BIT(shift);
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-}
133
-
134
-#ifdef CONFIG_PM_SLEEP
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-static int mt6397_irq_set_wake(struct irq_data *irq_data, unsigned int on)
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-{
137
-	struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(irq_data);
138
-	int shift = irq_data->hwirq & 0xf;
139
-	int reg = irq_data->hwirq >> 4;
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-
141
-	if (on)
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-		mt6397->wake_mask[reg] |= BIT(shift);
143
-	else
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-		mt6397->wake_mask[reg] &= ~BIT(shift);
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-
146
-	return 0;
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-}
148
-#else
149
-#define mt6397_irq_set_wake NULL
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-#endif
151
-
152
-static struct irq_chip mt6397_irq_chip = {
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-	.name = "mt6397-irq",
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-	.irq_bus_lock = mt6397_irq_lock,
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-	.irq_bus_sync_unlock = mt6397_irq_sync_unlock,
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-	.irq_enable = mt6397_irq_enable,
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-	.irq_disable = mt6397_irq_disable,
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-	.irq_set_wake = mt6397_irq_set_wake,
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+struct chip_data {
129
+	u32 cid_addr;
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+	u32 cid_shift;
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+	const struct mfd_cell *cells;
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+	int cell_size;
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+	int (*irq_init)(struct mt6397_chip *chip);
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134
 };
160
135
 
161
-static void mt6397_irq_handle_reg(struct mt6397_chip *mt6397, int reg,
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-		int irqbase)
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-{
164
-	unsigned int status;
165
-	int i, irq, ret;
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-
167
-	ret = regmap_read(mt6397->regmap, reg, &status);
168
-	if (ret) {
169
-		dev_err(mt6397->dev, "Failed to read irq status: %d\n", ret);
170
-		return;
171
-	}
172
-
173
-	for (i = 0; i < 16; i++) {
174
-		if (status & BIT(i)) {
175
-			irq = irq_find_mapping(mt6397->irq_domain, irqbase + i);
176
-			if (irq)
177
-				handle_nested_irq(irq);
178
-		}
179
-	}
180
-
181
-	regmap_write(mt6397->regmap, reg, status);
182
-}
183
-
184
-static irqreturn_t mt6397_irq_thread(int irq, void *data)
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-{
186
-	struct mt6397_chip *mt6397 = data;
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-
188
-	mt6397_irq_handle_reg(mt6397, mt6397->int_status[0], 0);
189
-	mt6397_irq_handle_reg(mt6397, mt6397->int_status[1], 16);
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-
191
-	return IRQ_HANDLED;
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-}
193
-
194
-static int mt6397_irq_domain_map(struct irq_domain *d, unsigned int irq,
195
-					irq_hw_number_t hw)
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-{
197
-	struct mt6397_chip *mt6397 = d->host_data;
198
-
199
-	irq_set_chip_data(irq, mt6397);
200
-	irq_set_chip_and_handler(irq, &mt6397_irq_chip, handle_level_irq);
201
-	irq_set_nested_thread(irq, 1);
202
-	irq_set_noprobe(irq);
203
-
204
-	return 0;
205
-}
206
-
207
-static const struct irq_domain_ops mt6397_irq_domain_ops = {
208
-	.map = mt6397_irq_domain_map,
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+static const struct chip_data mt6323_core = {
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+	.cid_addr = MT6323_CID,
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+	.cid_shift = 0,
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+	.cells = mt6323_devs,
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+	.cell_size = ARRAY_SIZE(mt6323_devs),
141
+	.irq_init = mt6397_irq_init,
209
142
 };
210
143
 
211
-static int mt6397_irq_init(struct mt6397_chip *mt6397)
212
-{
213
-	int ret;
144
+static const struct chip_data mt6358_core = {
145
+	.cid_addr = MT6358_SWCID,
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+	.cid_shift = 8,
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+	.cells = mt6358_devs,
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+	.cell_size = ARRAY_SIZE(mt6358_devs),
149
+	.irq_init = mt6358_irq_init,
150
+};
214
151
 
215
-	mutex_init(&mt6397->irqlock);
216
-
217
-	/* Mask all interrupt sources */
218
-	regmap_write(mt6397->regmap, mt6397->int_con[0], 0x0);
219
-	regmap_write(mt6397->regmap, mt6397->int_con[1], 0x0);
220
-
221
-	mt6397->irq_domain = irq_domain_add_linear(mt6397->dev->of_node,
222
-		MT6397_IRQ_NR, &mt6397_irq_domain_ops, mt6397);
223
-	if (!mt6397->irq_domain) {
224
-		dev_err(mt6397->dev, "could not create irq domain\n");
225
-		return -ENOMEM;
226
-	}
227
-
228
-	ret = devm_request_threaded_irq(mt6397->dev, mt6397->irq, NULL,
229
-		mt6397_irq_thread, IRQF_ONESHOT, "mt6397-pmic", mt6397);
230
-	if (ret) {
231
-		dev_err(mt6397->dev, "failed to register irq=%d; err: %d\n",
232
-			mt6397->irq, ret);
233
-		return ret;
234
-	}
235
-
236
-	return 0;
237
-}
238
-
239
-#ifdef CONFIG_PM_SLEEP
240
-static int mt6397_irq_suspend(struct device *dev)
241
-{
242
-	struct mt6397_chip *chip = dev_get_drvdata(dev);
243
-
244
-	regmap_write(chip->regmap, chip->int_con[0], chip->wake_mask[0]);
245
-	regmap_write(chip->regmap, chip->int_con[1], chip->wake_mask[1]);
246
-
247
-	enable_irq_wake(chip->irq);
248
-
249
-	return 0;
250
-}
251
-
252
-static int mt6397_irq_resume(struct device *dev)
253
-{
254
-	struct mt6397_chip *chip = dev_get_drvdata(dev);
255
-
256
-	regmap_write(chip->regmap, chip->int_con[0], chip->irq_masks_cur[0]);
257
-	regmap_write(chip->regmap, chip->int_con[1], chip->irq_masks_cur[1]);
258
-
259
-	disable_irq_wake(chip->irq);
260
-
261
-	return 0;
262
-}
263
-#endif
264
-
265
-static SIMPLE_DEV_PM_OPS(mt6397_pm_ops, mt6397_irq_suspend,
266
-			mt6397_irq_resume);
152
+static const struct chip_data mt6397_core = {
153
+	.cid_addr = MT6397_CID,
154
+	.cid_shift = 0,
155
+	.cells = mt6397_devs,
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+	.cell_size = ARRAY_SIZE(mt6397_devs),
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+	.irq_init = mt6397_irq_init,
158
+};
267
159
 
268
160
 static int mt6397_probe(struct platform_device *pdev)
269
161
 {
270
162
 	int ret;
271
-	unsigned int id;
163
+	unsigned int id = 0;
272
164
 	struct mt6397_chip *pmic;
165
+	const struct chip_data *pmic_core;
273
166
 
274
167
 	pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
275
168
 	if (!pmic)
..
..
@@ -285,53 +178,31 @@
285
178
 	if (!pmic->regmap)
286
179
 		return -ENODEV;
287
180
 
288
-	platform_set_drvdata(pdev, pmic);
181
+	pmic_core = of_device_get_match_data(&pdev->dev);
182
+	if (!pmic_core)
183
+		return -ENODEV;
289
184
 
290
-	ret = regmap_read(pmic->regmap, MT6397_CID, &id);
185
+	ret = regmap_read(pmic->regmap, pmic_core->cid_addr, &id);
291
186
 	if (ret) {
292
-		dev_err(pmic->dev, "Failed to read chip id: %d\n", ret);
187
+		dev_err(&pdev->dev, "Failed to read chip id: %d\n", ret);
293
188
 		return ret;
294
189
 	}
190
+
191
+	pmic->chip_id = (id >> pmic_core->cid_shift) & 0xff;
192
+
193
+	platform_set_drvdata(pdev, pmic);
295
194
 
296
195
 	pmic->irq = platform_get_irq(pdev, 0);
297
196
 	if (pmic->irq <= 0)
298
197
 		return pmic->irq;
299
198
 
300
-	switch (id & 0xff) {
301
-	case MT6323_CID_CODE:
302
-		pmic->int_con[0] = MT6323_INT_CON0;
303
-		pmic->int_con[1] = MT6323_INT_CON1;
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-		pmic->int_status[0] = MT6323_INT_STATUS0;
305
-		pmic->int_status[1] = MT6323_INT_STATUS1;
306
-		ret = mt6397_irq_init(pmic);
307
-		if (ret)
308
-			return ret;
199
+	ret = pmic_core->irq_init(pmic);
200
+	if (ret)
201
+		return ret;
309
202
 
310
-		ret = devm_mfd_add_devices(&pdev->dev, -1, mt6323_devs,
311
-					   ARRAY_SIZE(mt6323_devs), NULL,
312
-					   0, pmic->irq_domain);
313
-		break;
314
-
315
-	case MT6397_CID_CODE:
316
-	case MT6391_CID_CODE:
317
-		pmic->int_con[0] = MT6397_INT_CON0;
318
-		pmic->int_con[1] = MT6397_INT_CON1;
319
-		pmic->int_status[0] = MT6397_INT_STATUS0;
320
-		pmic->int_status[1] = MT6397_INT_STATUS1;
321
-		ret = mt6397_irq_init(pmic);
322
-		if (ret)
323
-			return ret;
324
-
325
-		ret = devm_mfd_add_devices(&pdev->dev, -1, mt6397_devs,
326
-					   ARRAY_SIZE(mt6397_devs), NULL,
327
-					   0, pmic->irq_domain);
328
-		break;
329
-
330
-	default:
331
-		dev_err(&pdev->dev, "unsupported chip: %d\n", id);
332
-		return -ENODEV;
333
-	}
334
-
203
+	ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
204
+				   pmic_core->cells, pmic_core->cell_size,
205
+				   NULL, 0, pmic->irq_domain);
335
206
 	if (ret) {
336
207
 		irq_domain_remove(pmic->irq_domain);
337
208
 		dev_err(&pdev->dev, "failed to add child devices: %d\n", ret);
..
..
@@ -341,9 +212,18 @@
341
212
 }
342
213
 
343
214
 static const struct of_device_id mt6397_of_match[] = {
344
-	{ .compatible = "mediatek,mt6397" },
345
-	{ .compatible = "mediatek,mt6323" },
346
-	{ }
215
+	{
216
+		.compatible = "mediatek,mt6323",
217
+		.data = &mt6323_core,
218
+	}, {
219
+		.compatible = "mediatek,mt6358",
220
+		.data = &mt6358_core,
221
+	}, {
222
+		.compatible = "mediatek,mt6397",
223
+		.data = &mt6397_core,
224
+	}, {
225
+		/* sentinel */
226
+	}
347
227
 };
348
228
 MODULE_DEVICE_TABLE(of, mt6397_of_match);
349
229
 
..
..
@@ -358,7 +238,6 @@
358
238
 	.driver = {
359
239
 		.name = "mt6397",
360
240
 		.of_match_table = of_match_ptr(mt6397_of_match),
361
-		.pm = &mt6397_pm_ops,
362
241
 	},
363
242
 	.id_table = mt6397_id,
364
243
 };