1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Driver for the NXP ISP1760 chip |
4 | * |
5 | * Copyright 2021 Linaro, Rui Miguel Silva |
6 | * Copyright 2014 Laurent Pinchart |
7 | * Copyright 2007 Sebastian Siewior |
8 | * |
9 | * Contacts: |
10 | * Sebastian Siewior <bigeasy@linutronix.de> |
11 | * Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
12 | * Rui Miguel Silva <rui.silva@linaro.org> |
13 | */ |
14 | |
15 | #ifndef _ISP1760_CORE_H_ |
16 | #define _ISP1760_CORE_H_ |
17 | |
18 | #include <linux/ioport.h> |
19 | #include <linux/regmap.h> |
20 | |
21 | #include "isp1760-hcd.h" |
22 | #include "isp1760-udc.h" |
23 | |
24 | struct device; |
25 | struct gpio_desc; |
26 | |
27 | /* |
28 | * Device flags that can vary from board to board. All of these |
29 | * indicate the most "atypical" case, so that a devflags of 0 is |
30 | * a sane default configuration. |
31 | */ |
32 | #define ISP1760_FLAG_BUS_WIDTH_16 0x00000002 /* 16-bit data bus width */ |
33 | #define ISP1760_FLAG_PERIPHERAL_EN 0x00000004 /* Port 1 supports Peripheral mode*/ |
34 | #define ISP1760_FLAG_ANALOG_OC 0x00000008 /* Analog overcurrent */ |
35 | #define ISP1760_FLAG_DACK_POL_HIGH 0x00000010 /* DACK active high */ |
36 | #define ISP1760_FLAG_DREQ_POL_HIGH 0x00000020 /* DREQ active high */ |
37 | #define ISP1760_FLAG_ISP1761 0x00000040 /* Chip is ISP1761 */ |
38 | #define ISP1760_FLAG_INTR_POL_HIGH 0x00000080 /* Interrupt polarity active high */ |
39 | #define ISP1760_FLAG_INTR_EDGE_TRIG 0x00000100 /* Interrupt edge triggered */ |
40 | #define ISP1760_FLAG_ISP1763 0x00000200 /* Chip is ISP1763 */ |
41 | #define ISP1760_FLAG_BUS_WIDTH_8 0x00000400 /* 8-bit data bus width */ |
42 | |
43 | struct isp1760_device { |
44 | struct device *dev; |
45 | |
46 | unsigned int devflags; |
47 | struct gpio_desc *rst_gpio; |
48 | |
49 | struct isp1760_hcd hcd; |
50 | struct isp1760_udc udc; |
51 | }; |
52 | |
53 | int isp1760_register(struct resource *mem, int irq, unsigned long irqflags, |
54 | struct device *dev, unsigned int devflags); |
55 | void isp1760_unregister(struct device *dev); |
56 | |
57 | void isp1760_set_pullup(struct isp1760_device *isp, bool enable); |
58 | |
59 | static inline u32 isp1760_field_read(struct regmap_field **fields, u32 field) |
60 | { |
61 | unsigned int val; |
62 | |
63 | regmap_field_read(field: fields[field], val: &val); |
64 | |
65 | return val; |
66 | } |
67 | |
68 | static inline void isp1760_field_write(struct regmap_field **fields, u32 field, |
69 | u32 val) |
70 | { |
71 | regmap_field_write(field: fields[field], val); |
72 | } |
73 | |
74 | static inline void isp1760_field_set(struct regmap_field **fields, u32 field) |
75 | { |
76 | isp1760_field_write(fields, field, val: 0xFFFFFFFF); |
77 | } |
78 | |
79 | static inline void isp1760_field_clear(struct regmap_field **fields, u32 field) |
80 | { |
81 | isp1760_field_write(fields, field, val: 0); |
82 | } |
83 | |
84 | static inline u32 isp1760_reg_read(struct regmap *regs, u32 reg) |
85 | { |
86 | unsigned int val; |
87 | |
88 | regmap_read(map: regs, reg, val: &val); |
89 | |
90 | return val; |
91 | } |
92 | |
93 | static inline void isp1760_reg_write(struct regmap *regs, u32 reg, u32 val) |
94 | { |
95 | regmap_write(map: regs, reg, val); |
96 | } |
97 | #endif |
98 | |