1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * Turris Mox module configuration bus driver 3 * Turris Mox module configuration bus driver
4 * 4 *
5 * Copyright (C) 2019 Marek Behún <kabel@kern 5 * Copyright (C) 2019 Marek Behún <kabel@kernel.org>
6 */ 6 */
7 7
8 #ifndef __LINUX_MOXTET_H 8 #ifndef __LINUX_MOXTET_H
9 #define __LINUX_MOXTET_H 9 #define __LINUX_MOXTET_H
10 10
11 #include <linux/device.h> 11 #include <linux/device.h>
12 #include <linux/irq.h> 12 #include <linux/irq.h>
13 #include <linux/irqdomain.h> 13 #include <linux/irqdomain.h>
14 #include <linux/mutex.h> 14 #include <linux/mutex.h>
15 15
16 #define TURRIS_MOX_MAX_MODULES 10 16 #define TURRIS_MOX_MAX_MODULES 10
17 17
18 enum turris_mox_cpu_module_id { 18 enum turris_mox_cpu_module_id {
19 TURRIS_MOX_CPU_ID_EMMC = 0x00, 19 TURRIS_MOX_CPU_ID_EMMC = 0x00,
20 TURRIS_MOX_CPU_ID_SD = 0x10, 20 TURRIS_MOX_CPU_ID_SD = 0x10,
21 }; 21 };
22 22
23 enum turris_mox_module_id { 23 enum turris_mox_module_id {
24 TURRIS_MOX_MODULE_FIRST = 0x01 24 TURRIS_MOX_MODULE_FIRST = 0x01,
25 25
26 TURRIS_MOX_MODULE_SFP = 0x01 26 TURRIS_MOX_MODULE_SFP = 0x01,
27 TURRIS_MOX_MODULE_PCI = 0x02 27 TURRIS_MOX_MODULE_PCI = 0x02,
28 TURRIS_MOX_MODULE_TOPAZ = 0x03 28 TURRIS_MOX_MODULE_TOPAZ = 0x03,
29 TURRIS_MOX_MODULE_PERIDOT = 0x04 29 TURRIS_MOX_MODULE_PERIDOT = 0x04,
30 TURRIS_MOX_MODULE_USB3 = 0x05 30 TURRIS_MOX_MODULE_USB3 = 0x05,
31 TURRIS_MOX_MODULE_PCI_BRIDGE = 0x06 31 TURRIS_MOX_MODULE_PCI_BRIDGE = 0x06,
32 32
33 TURRIS_MOX_MODULE_LAST = 0x06 33 TURRIS_MOX_MODULE_LAST = 0x06,
34 }; 34 };
35 35
36 #define MOXTET_NIRQS 16 36 #define MOXTET_NIRQS 16
37 37
38 struct moxtet { 38 struct moxtet {
39 struct device *dev; 39 struct device *dev;
40 struct mutex lock; 40 struct mutex lock;
41 u8 module 41 u8 modules[TURRIS_MOX_MAX_MODULES];
42 int count; 42 int count;
43 u8 tx[TUR 43 u8 tx[TURRIS_MOX_MAX_MODULES];
44 int dev_ir 44 int dev_irq;
45 struct { 45 struct {
46 struct irq_domain *domai 46 struct irq_domain *domain;
47 struct irq_chip chip; 47 struct irq_chip chip;
48 unsigned long masked 48 unsigned long masked, exists;
49 struct moxtet_irqpos { 49 struct moxtet_irqpos {
50 u8 idx 50 u8 idx;
51 u8 bit 51 u8 bit;
52 } position[MOXTET_NIRQS]; 52 } position[MOXTET_NIRQS];
53 } irq; 53 } irq;
54 #ifdef CONFIG_DEBUG_FS 54 #ifdef CONFIG_DEBUG_FS
55 struct dentry *debug 55 struct dentry *debugfs_root;
56 #endif 56 #endif
57 }; 57 };
58 58
59 struct moxtet_driver { 59 struct moxtet_driver {
60 const enum turris_mox_module_id *id_ta 60 const enum turris_mox_module_id *id_table;
61 struct device_driver driver 61 struct device_driver driver;
62 }; 62 };
63 63
64 #define to_moxtet_driver(__drv) \ 64 #define to_moxtet_driver(__drv) \
65 ( __drv ? container_of_const(__drv, st 65 ( __drv ? container_of_const(__drv, struct moxtet_driver, driver) : NULL )
66 66
67 extern int __moxtet_register_driver(struct mod 67 extern int __moxtet_register_driver(struct module *owner,
68 struct mox 68 struct moxtet_driver *mdrv);
69 69
70 static inline void moxtet_unregister_driver(st 70 static inline void moxtet_unregister_driver(struct moxtet_driver *mdrv)
71 { 71 {
72 if (mdrv) 72 if (mdrv)
73 driver_unregister(&mdrv->drive 73 driver_unregister(&mdrv->driver);
74 } 74 }
75 75
76 #define moxtet_register_driver(driver) \ 76 #define moxtet_register_driver(driver) \
77 __moxtet_register_driver(THIS_MODULE, 77 __moxtet_register_driver(THIS_MODULE, driver)
78 78
79 #define module_moxtet_driver(__moxtet_driver) 79 #define module_moxtet_driver(__moxtet_driver) \
80 module_driver(__moxtet_driver, moxtet_ 80 module_driver(__moxtet_driver, moxtet_register_driver, \
81 moxtet_unregister_driv 81 moxtet_unregister_driver)
82 82
83 struct moxtet_device { 83 struct moxtet_device {
84 struct device dev; 84 struct device dev;
85 struct moxtet *moxte 85 struct moxtet *moxtet;
86 enum turris_mox_module_id id; 86 enum turris_mox_module_id id;
87 unsigned int idx; 87 unsigned int idx;
88 }; 88 };
89 89
90 extern int moxtet_device_read(struct device *d 90 extern int moxtet_device_read(struct device *dev);
91 extern int moxtet_device_write(struct device * 91 extern int moxtet_device_write(struct device *dev, u8 val);
92 extern int moxtet_device_written(struct device 92 extern int moxtet_device_written(struct device *dev);
93 93
94 static inline struct moxtet_device * 94 static inline struct moxtet_device *
95 to_moxtet_device(struct device *dev) 95 to_moxtet_device(struct device *dev)
96 { 96 {
97 if (!dev) 97 if (!dev)
98 return NULL; 98 return NULL;
99 return container_of(dev, struct moxtet 99 return container_of(dev, struct moxtet_device, dev);
100 } 100 }
101 101
102 #endif /* __LINUX_MOXTET_H */ 102 #endif /* __LINUX_MOXTET_H */
103 103
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