878f27741f
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it was merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://lore.kernel.org/r/20230714175048.4066006-1-robh@kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BBC_I2C_H
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#define _BBC_I2C_H
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#include <linux/of.h>
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#include <linux/list.h>
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struct bbc_i2c_client {
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struct bbc_i2c_bus *bp;
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struct platform_device *op;
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int bus;
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int address;
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};
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enum fan_action { FAN_SLOWER, FAN_SAME, FAN_FASTER, FAN_FULLBLAST, FAN_STATE_MAX };
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struct bbc_cpu_temperature {
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struct list_head bp_list;
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struct list_head glob_list;
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struct bbc_i2c_client *client;
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int index;
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/* Current readings, and history. */
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s8 curr_cpu_temp;
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s8 curr_amb_temp;
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s8 prev_cpu_temp;
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s8 prev_amb_temp;
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s8 avg_cpu_temp;
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s8 avg_amb_temp;
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int sample_tick;
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enum fan_action fan_todo[2];
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#define FAN_AMBIENT 0
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#define FAN_CPU 1
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};
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struct bbc_fan_control {
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struct list_head bp_list;
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struct list_head glob_list;
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struct bbc_i2c_client *client;
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int index;
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int psupply_fan_on;
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int cpu_fan_speed;
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int system_fan_speed;
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};
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#define NUM_CHILDREN 8
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struct bbc_i2c_bus {
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struct bbc_i2c_bus *next;
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int index;
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spinlock_t lock;
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void __iomem *i2c_bussel_reg;
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void __iomem *i2c_control_regs;
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unsigned char own, clock;
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wait_queue_head_t wq;
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volatile int waiting;
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struct list_head temps;
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struct list_head fans;
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struct platform_device *op;
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struct {
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struct platform_device *device;
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int client_claimed;
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} devs[NUM_CHILDREN];
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};
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/* Probing and attachment. */
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extern struct platform_device *bbc_i2c_getdev(struct bbc_i2c_bus *, int);
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extern struct bbc_i2c_client *bbc_i2c_attach(struct bbc_i2c_bus *bp, struct platform_device *);
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extern void bbc_i2c_detach(struct bbc_i2c_client *);
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/* Register read/write. NOTE: Blocking! */
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extern int bbc_i2c_writeb(struct bbc_i2c_client *, unsigned char val, int off);
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extern int bbc_i2c_readb(struct bbc_i2c_client *, unsigned char *byte, int off);
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extern int bbc_i2c_write_buf(struct bbc_i2c_client *, char *buf, int len, int off);
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extern int bbc_i2c_read_buf(struct bbc_i2c_client *, char *buf, int len, int off);
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#endif /* _BBC_I2C_H */
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