summaryrefslogtreecommitdiffstats
path: root/drivers/pinctrl/pinctrl-mcp23s08.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pinctrl/pinctrl-mcp23s08.h')
-rw-r--r--drivers/pinctrl/pinctrl-mcp23s08.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-mcp23s08.h b/drivers/pinctrl/pinctrl-mcp23s08.h
new file mode 100644
index 000000000000..90dc27081a3c
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-mcp23s08.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* MCP23S08 SPI/I2C GPIO driver */
+
+#include <linux/gpio/driver.h>
+#include <linux/irq.h>
+#include <linux/mutex.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/types.h>
+
+/*
+ * MCP types supported by driver
+ */
+#define MCP_TYPE_S08 1
+#define MCP_TYPE_S17 2
+#define MCP_TYPE_008 3
+#define MCP_TYPE_017 4
+#define MCP_TYPE_S18 5
+#define MCP_TYPE_018 6
+
+struct device;
+struct regmap;
+
+struct pinctrl_dev;
+
+struct mcp23s08 {
+ u8 addr;
+ bool irq_active_high;
+ bool reg_shift;
+
+ u16 irq_rise;
+ u16 irq_fall;
+ int irq;
+ bool irq_controller;
+ int cached_gpio;
+ /* lock protects regmap access with bypass/cache flags */
+ struct mutex lock;
+
+ struct gpio_chip chip;
+ struct irq_chip irq_chip;
+
+ struct regmap *regmap;
+ struct device *dev;
+
+ struct pinctrl_dev *pctldev;
+ struct pinctrl_desc pinctrl_desc;
+};
+
+extern const struct regmap_config mcp23x08_regmap;
+extern const struct regmap_config mcp23x17_regmap;
+
+int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
+ unsigned int addr, unsigned int type, unsigned int base);