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/compat.h>
19 #include <linux/ioport.h>
20 #include <regmap.h>
21
22 #include "isp1760-hcd.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 udevice *dev;
45
46 unsigned int devflags;
47 struct gpio_desc *rst_gpio;
48
49 struct isp1760_hcd hcd;
50 };
51
52 int isp1760_register(struct isp1760_device *isp, struct resource *mem, int irq,
53 unsigned long irqflags);
54 void isp1760_unregister(struct isp1760_device *isp);
55
56 void isp1760_set_pullup(struct isp1760_device *isp, bool enable);
57
isp1760_field_read(struct regmap_field ** fields,u32 field)58 static inline u32 isp1760_field_read(struct regmap_field **fields, u32 field)
59 {
60 unsigned int val;
61
62 regmap_field_read(fields[field], &val);
63
64 return val;
65 }
66
isp1760_field_write(struct regmap_field ** fields,u32 field,u32 val)67 static inline void isp1760_field_write(struct regmap_field **fields, u32 field,
68 u32 val)
69 {
70 regmap_field_write(fields[field], val);
71 }
72
isp1760_field_set(struct regmap_field ** fields,u32 field)73 static inline void isp1760_field_set(struct regmap_field **fields, u32 field)
74 {
75 isp1760_field_write(fields, field, 0xFFFFFFFF);
76 }
77
isp1760_field_clear(struct regmap_field ** fields,u32 field)78 static inline void isp1760_field_clear(struct regmap_field **fields, u32 field)
79 {
80 isp1760_field_write(fields, field, 0);
81 }
82
isp1760_reg_read(struct regmap * regs,u32 reg)83 static inline u32 isp1760_reg_read(struct regmap *regs, u32 reg)
84 {
85 unsigned int val;
86
87 regmap_read(regs, reg, &val);
88
89 return val;
90 }
91
isp1760_reg_write(struct regmap * regs,u32 reg,u32 val)92 static inline void isp1760_reg_write(struct regmap *regs, u32 reg, u32 val)
93 {
94 regmap_write(regs, reg, val);
95 }
96 #endif
97