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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /drivers/sbus/char/bbc_i2c.h | |
| parent | Initial commit. (diff) | |
| download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip | |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/sbus/char/bbc_i2c.h')
| -rw-r--r-- | drivers/sbus/char/bbc_i2c.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/sbus/char/bbc_i2c.h b/drivers/sbus/char/bbc_i2c.h new file mode 100644 index 000000000..c2d066d3f --- /dev/null +++ b/drivers/sbus/char/bbc_i2c.h @@ -0,0 +1,86 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#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 */ |