drivers/usb/isp1760/isp1760-core.h

   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(fields[field], &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(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, 0xFFFFFFFF);
  77 }
  78
  79 static inline void isp1760_field_clear(struct regmap_field **fields, u32 field)
  80 {
  81         isp1760_field_write(fields, field, 0);
  82 }
  83
  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
  93 static inline void isp1760_reg_write(struct regmap *regs, u32 reg, u32 val)
  94 {
  95         regmap_write(regs, reg, val);
  96 }
  97 #endif