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path: root/drivers/gpio/gpio-i8255.h
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Diffstat (limited to 'drivers/gpio/gpio-i8255.h')
-rw-r--r--drivers/gpio/gpio-i8255.h54
1 files changed, 21 insertions, 33 deletions
diff --git a/drivers/gpio/gpio-i8255.h b/drivers/gpio/gpio-i8255.h
index d9084aae9446..9dcf639b94df 100644
--- a/drivers/gpio/gpio-i8255.h
+++ b/drivers/gpio/gpio-i8255.h
@@ -3,44 +3,32 @@
#ifndef _I8255_H_
#define _I8255_H_
-#include <linux/spinlock.h>
-#include <linux/types.h>
+struct device;
+struct irq_domain;
+struct regmap;
-/**
- * struct i8255 - Intel 8255 register structure
- * @port: Port A, B, and C
- * @control: Control register
- */
-struct i8255 {
- u8 port[3];
- u8 control;
-};
+#define i8255_volatile_regmap_range(_base) regmap_reg_range(_base, _base + 0x2)
/**
- * struct i8255_state - Intel 8255 state structure
- * @lock: synchronization lock for accessing device state
- * @control_state: Control register state
+ * struct i8255_regmap_config - Configuration for the register map of an i8255
+ * @parent: parent device
+ * @map: regmap for the i8255
+ * @num_ppi: number of i8255 Programmable Peripheral Interface
+ * @names: (optional) array of names for gpios
+ * @domain: (optional) IRQ domain if the controller is interrupt-capable
+ *
+ * Note: The regmap is expected to have cache enabled and i8255 control
+ * registers not marked as volatile.
*/
-struct i8255_state {
- spinlock_t lock;
- u8 control_state;
+struct i8255_regmap_config {
+ struct device *parent;
+ struct regmap *map;
+ int num_ppi;
+ const char *const *names;
+ struct irq_domain *domain;
};
-void i8255_direction_input(struct i8255 __iomem *ppi, struct i8255_state *state,
- unsigned long offset);
-void i8255_direction_output(struct i8255 __iomem *ppi,
- struct i8255_state *state, unsigned long offset,
- unsigned long value);
-int i8255_get(struct i8255 __iomem *ppi, unsigned long offset);
-int i8255_get_direction(const struct i8255_state *state, unsigned long offset);
-void i8255_get_multiple(struct i8255 __iomem *ppi, const unsigned long *mask,
- unsigned long *bits, unsigned long ngpio);
-void i8255_mode0_output(struct i8255 __iomem *const ppi);
-void i8255_set(struct i8255 __iomem *ppi, struct i8255_state *state,
- unsigned long offset, unsigned long value);
-void i8255_set_multiple(struct i8255 __iomem *ppi, struct i8255_state *state,
- const unsigned long *mask, const unsigned long *bits,
- unsigned long ngpio);
-void i8255_state_init(struct i8255_state *const state, unsigned long nbanks);
+int devm_i8255_regmap_register(struct device *dev,
+ const struct i8255_regmap_config *config);
#endif /* _I8255_H_ */