Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / sbus / char / bbc_i2c.h

diff --git a/kernel/drivers/sbus/char/bbc_i2c.h b/kernel/drivers/sbus/char/bbc_i2c.h
new file mode 100644 (file)
index 0000000..4b45310
--- /dev/null
+++ b/kernel/drivers/sbus/char/bbc_i2c.h
@@ -0,0 +1,85 @@
+#ifndef _BBC_I2C_H
+#define _BBC_I2C_H
+
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/list.h>
+
+struct bbc_i2c_client {
+       struct bbc_i2c_bus              *bp;
+       struct platform_device          *op;
+       int                             bus;
+       int                             address;
+};
+
+enum fan_action { FAN_SLOWER, FAN_SAME, FAN_FASTER, FAN_FULLBLAST, FAN_STATE_MAX };
+
+struct bbc_cpu_temperature {
+       struct list_head                bp_list;
+       struct list_head                glob_list;
+
+       struct bbc_i2c_client           *client;
+       int                             index;
+
+       /* Current readings, and history. */
+       s8                              curr_cpu_temp;
+       s8                              curr_amb_temp;
+       s8                              prev_cpu_temp;
+       s8                              prev_amb_temp;
+       s8                              avg_cpu_temp;
+       s8                              avg_amb_temp;
+
+       int                             sample_tick;
+
+       enum fan_action                 fan_todo[2];
+#define FAN_AMBIENT    0
+#define FAN_CPU                1
+};
+
+struct bbc_fan_control {
+       struct list_head                bp_list;
+       struct list_head                glob_list;
+
+       struct bbc_i2c_client           *client;
+       int                             index;
+
+       int                             psupply_fan_on;
+       int                             cpu_fan_speed;
+       int                             system_fan_speed;
+};
+
+#define NUM_CHILDREN   8
+
+struct bbc_i2c_bus {
+       struct bbc_i2c_bus              *next;
+       int                             index;
+       spinlock_t                      lock;
+       void                            __iomem *i2c_bussel_reg;
+       void                            __iomem *i2c_control_regs;
+       unsigned char                   own, clock;
+
+       wait_queue_head_t               wq;
+       volatile int                    waiting;
+
+       struct list_head                temps;
+       struct list_head                fans;
+
+       struct platform_device          *op;
+       struct {
+               struct platform_device  *device;
+               int                     client_claimed;
+       } devs[NUM_CHILDREN];
+};
+
+/* Probing and attachment. */
+extern struct platform_device *bbc_i2c_getdev(struct bbc_i2c_bus *, int);
+extern struct bbc_i2c_client *bbc_i2c_attach(struct bbc_i2c_bus *bp, struct platform_device *);
+extern void bbc_i2c_detach(struct bbc_i2c_client *);
+
+/* Register read/write.  NOTE: Blocking! */
+extern int bbc_i2c_writeb(struct bbc_i2c_client *, unsigned char val, int off);
+extern int bbc_i2c_readb(struct bbc_i2c_client *, unsigned char *byte, int off);
+extern int bbc_i2c_write_buf(struct bbc_i2c_client *, char *buf, int len, int off);
+extern int bbc_i2c_read_buf(struct bbc_i2c_client *, char *buf, int len, int off);
+
+#endif /* _BBC_I2C_H */