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
isp1760_field_read(struct regmap_field ** fields,u32 field)59 static inline u32 isp1760_field_read(struct regmap_field **fields, u32 field)
60 {
61 unsigned int val;
62
63 regmap_field_read(fields[field], &val);
64
65 return val;
66 }
67
isp1760_field_write(struct regmap_field ** fields,u32 field,u32 val)68 static inline void isp1760_field_write(struct regmap_field **fields, u32 field,
69 u32 val)
70 {
71 regmap_field_write(fields[field], val);
72 }
73
isp1760_field_set(struct regmap_field ** fields,u32 field)74 static inline void isp1760_field_set(struct regmap_field **fields, u32 field)
75 {
76 isp1760_field_write(fields, field, 0xFFFFFFFF);
77 }
78
isp1760_field_clear(struct regmap_field ** fields,u32 field)79 static inline void isp1760_field_clear(struct regmap_field **fields, u32 field)
80 {
81 isp1760_field_write(fields, field, 0);
82 }
83
isp1760_reg_read(struct regmap * regs,u32 reg)84 static inline u32 isp1760_reg_read(struct regmap *regs, u32 reg)
85 {
86 unsigned int val;
87
88 regmap_read(regs, reg, &val);
89
90 return val;
91 }
92
isp1760_reg_write(struct regmap * regs,u32 reg,u32 val)93 static inline void isp1760_reg_write(struct regmap *regs, u32 reg, u32 val)
94 {
95 regmap_write(regs, reg, val);
96 }
97 #endif
98