clk: stm32mp1: use stm32mp13 reset driver

STM32MP15 is now using the same reset driver as STM32MP13 as they
have the same binding requirement.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Link: https://lore.kernel.org/r/20231208143700.354785-3-gabriel.fernandez@foss.st.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

1 files changed, 16 insertions, 111 deletions

diff --git a/drivers/clk/stm32/clk-stm32mp1.c b/drivers/clk/stm32/clk-stm32mp1.c
index 939779f66867..7e2337297402 100644
--- a/drivers/clk/stm32/clk-stm32mp1.c
+++ b/drivers/clk/stm32/clk-stm32mp1.c
@@ -20,6 +20,10 @@
 
 #include <dt-bindings/clock/stm32mp1-clks.h>
 
+#include "reset-stm32.h"
+
+#define STM32MP1_RESET_ID_MASK GENMASK(15, 0)
+
 static DEFINE_SPINLOCK(rlock);
 
 #define RCC_OCENSETR		0x0C
@@ -2137,22 +2141,27 @@ struct stm32_rcc_match_data {
 	const struct clock_config *cfg;
 	unsigned int num;
 	unsigned int maxbinding;
-	u32 clear_offset;
+	struct clk_stm32_reset_data *reset_data;
 	bool (*check_security)(const struct clock_config *cfg);
 };
 
+static struct clk_stm32_reset_data stm32mp1_reset_data = {
+	.nr_lines	= STM32MP1_RESET_ID_MASK,
+	.clear_offset	= RCC_CLR,
+};
+
 static struct stm32_rcc_match_data stm32mp1_data = {
 	.cfg		= stm32mp1_clock_cfg,
 	.num		= ARRAY_SIZE(stm32mp1_clock_cfg),
 	.maxbinding	= STM32MP1_LAST_CLK,
-	.clear_offset	= RCC_CLR,
+	.reset_data	= &stm32mp1_reset_data,
 };
 
 static struct stm32_rcc_match_data stm32mp1_data_secure = {
 	.cfg		= stm32mp1_clock_cfg,
 	.num		= ARRAY_SIZE(stm32mp1_clock_cfg),
 	.maxbinding	= STM32MP1_LAST_CLK,
-	.clear_offset	= RCC_CLR,
+	.reset_data	= &stm32mp1_reset_data,
 	.check_security = &stm32_check_security
 };
 
@@ -2193,113 +2202,6 @@ static int stm32_register_hw_clk(struct device *dev,
 	return 0;
 }
 
-#define STM32_RESET_ID_MASK GENMASK(15, 0)
-
-struct stm32_reset_data {
-	/* reset lock */
-	spinlock_t			lock;
-	struct reset_controller_dev	rcdev;
-	void __iomem			*membase;
-	u32				clear_offset;
-};
-
-static inline struct stm32_reset_data *
-to_stm32_reset_data(struct reset_controller_dev *rcdev)
-{
-	return container_of(rcdev, struct stm32_reset_data, rcdev);
-}
-
-static int stm32_reset_update(struct reset_controller_dev *rcdev,
-			      unsigned long id, bool assert)
-{
-	struct stm32_reset_data *data = to_stm32_reset_data(rcdev);
-	int reg_width = sizeof(u32);
-	int bank = id / (reg_width * BITS_PER_BYTE);
-	int offset = id % (reg_width * BITS_PER_BYTE);
-
-	if (data->clear_offset) {
-		void __iomem *addr;
-
-		addr = data->membase + (bank * reg_width);
-		if (!assert)
-			addr += data->clear_offset;
-
-		writel(BIT(offset), addr);
-
-	} else {
-		unsigned long flags;
-		u32 reg;
-
-		spin_lock_irqsave(&data->lock, flags);
-
-		reg = readl(data->membase + (bank * reg_width));
-
-		if (assert)
-			reg |= BIT(offset);
-		else
-			reg &= ~BIT(offset);
-
-		writel(reg, data->membase + (bank * reg_width));
-
-		spin_unlock_irqrestore(&data->lock, flags);
-	}
-
-	return 0;
-}
-
-static int stm32_reset_assert(struct reset_controller_dev *rcdev,
-			      unsigned long id)
-{
-	return stm32_reset_update(rcdev, id, true);
-}
-
-static int stm32_reset_deassert(struct reset_controller_dev *rcdev,
-				unsigned long id)
-{
-	return stm32_reset_update(rcdev, id, false);
-}
-
-static int stm32_reset_status(struct reset_controller_dev *rcdev,
-			      unsigned long id)
-{
-	struct stm32_reset_data *data = to_stm32_reset_data(rcdev);
-	int reg_width = sizeof(u32);
-	int bank = id / (reg_width * BITS_PER_BYTE);
-	int offset = id % (reg_width * BITS_PER_BYTE);
-	u32 reg;
-
-	reg = readl(data->membase + (bank * reg_width));
-
-	return !!(reg & BIT(offset));
-}
-
-static const struct reset_control_ops stm32_reset_ops = {
-	.assert		= stm32_reset_assert,
-	.deassert	= stm32_reset_deassert,
-	.status		= stm32_reset_status,
-};
-
-static int stm32_rcc_reset_init(struct device *dev, void __iomem *base,
-				const struct of_device_id *match)
-{
-	const struct stm32_rcc_match_data *data = match->data;
-	struct stm32_reset_data *reset_data = NULL;
-
-	reset_data = kzalloc(sizeof(*reset_data), GFP_KERNEL);
-	if (!reset_data)
-		return -ENOMEM;
-
-	spin_lock_init(&reset_data->lock);
-	reset_data->membase = base;
-	reset_data->rcdev.owner = THIS_MODULE;
-	reset_data->rcdev.ops = &stm32_reset_ops;
-	reset_data->rcdev.of_node = dev_of_node(dev);
-	reset_data->rcdev.nr_resets = STM32_RESET_ID_MASK;
-	reset_data->clear_offset = data->clear_offset;
-
-	return reset_controller_register(&reset_data->rcdev);
-}
-
 static int stm32_rcc_clock_init(struct device *dev, void __iomem *base,
 				const struct of_device_id *match)
 {
@@ -2342,6 +2244,7 @@ static int stm32_rcc_clock_init(struct device *dev, void __iomem *base,
 static int stm32_rcc_init(struct device *dev, void __iomem *base,
 			  const struct of_device_id *match_data)
 {
+	const struct stm32_rcc_match_data *rcc_match_data;
 	const struct of_device_id *match;
 	int err;
 
@@ -2351,8 +2254,10 @@ static int stm32_rcc_init(struct device *dev, void __iomem *base,
 		return -ENODEV;
 	}
 
+	rcc_match_data = match->data;
+
 	/* RCC Reset Configuration */
-	err = stm32_rcc_reset_init(dev, base, match);
+	err = stm32_rcc_reset_init(dev, rcc_match_data->reset_data, base);
 	if (err) {
 		pr_err("stm32mp1 reset failed to initialize\n");
 		return err;