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authorViresh Kumar <viresh.kumar@st.com>2011-11-17 09:32:20 +0400
committerSamuel Ortiz <sameo@linux.intel.com>2012-01-09 03:37:42 +0400
commit1a6e4b7415339e3b11a87cff0d701b8a2e55f062 (patch)
treefbd5151ac34bf908826f4bbf8b298404660a8de1 /drivers/mfd/stmpe.h
parent71e58782d2e054798f91473f5452ffe65e2a5ff8 (diff)
downloadlinux-1a6e4b7415339e3b11a87cff0d701b8a2e55f062.tar.xz
mfd: Separate out STMPE controller and interface specific code
Few STMPE controller can have register interface over SPI or I2C. Current implementation only supports I2C and all code is present in a single file stmpe.c. It would be better to separate out I2C interface specific code from controller specific code. Later SPI specific code can be added in a separate file. This patch separates out I2C and controller specific code into separate files, making stmpe.c independent of I2C. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/stmpe.h')
-rw-r--r--drivers/mfd/stmpe.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/mfd/stmpe.h b/drivers/mfd/stmpe.h
index e4ee38956583..18d89a68ce40 100644
--- a/drivers/mfd/stmpe.h
+++ b/drivers/mfd/stmpe.h
@@ -8,6 +8,14 @@
#ifndef __STMPE_H
#define __STMPE_H
+#include <linux/device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/stmpe.h>
+#include <linux/printk.h>
+#include <linux/types.h>
+
+extern const struct dev_pm_ops stmpe_dev_pm_ops;
+
#ifdef STMPE_DUMP_BYTES
static inline void stmpe_dump_bytes(const char *str, const void *buf,
size_t len)
@@ -67,6 +75,31 @@ struct stmpe_variant_info {
int (*enable_autosleep)(struct stmpe *stmpe, int autosleep_timeout);
};
+/**
+ * struct stmpe_client_info - i2c or spi specific routines/info
+ * @data: client specific data
+ * @read_byte: read single byte
+ * @write_byte: write single byte
+ * @read_block: read block or multiple bytes
+ * @write_block: write block or multiple bytes
+ * @init: client init routine, called during probe
+ */
+struct stmpe_client_info {
+ void *data;
+ int irq;
+ void *client;
+ struct device *dev;
+ int (*read_byte)(struct stmpe *stmpe, u8 reg);
+ int (*write_byte)(struct stmpe *stmpe, u8 reg, u8 val);
+ int (*read_block)(struct stmpe *stmpe, u8 reg, u8 len, u8 *values);
+ int (*write_block)(struct stmpe *stmpe, u8 reg, u8 len,
+ const u8 *values);
+ void (*init)(struct stmpe *stmpe);
+};
+
+int stmpe_probe(struct stmpe_client_info *ci, int partnum);
+int stmpe_remove(struct stmpe *stmpe);
+
#define STMPE_ICR_LSB_HIGH (1 << 2)
#define STMPE_ICR_LSB_EDGE (1 << 1)
#define STMPE_ICR_LSB_GIM (1 << 0)