drivers/pinctrl/qcom/pinctrl-lpass-lpi.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
   4  * Copyright (c) 2020 Linaro Ltd.
   5  */
   6 #ifndef __PINCTRL_LPASS_LPI_H__
   7 #define __PINCTRL_LPASS_LPI_H__
   8
   9 #include <linux/array_size.h>
  10 #include <linux/bits.h>
  11
  12 #include "../core.h"
  13
  14 struct platform_device;
  15
  16 struct pinctrl_pin_desc;
  17
  18 #define LPI_SLEW_RATE_CTL_REG   0xa000
  19 #define LPI_TLMM_REG_OFFSET             0x1000
  20 #define LPI_SLEW_RATE_MAX               0x03
  21 #define LPI_SLEW_BITS_SIZE              0x02
  22 #define LPI_SLEW_RATE_MASK              GENMASK(1, 0)
  23 #define LPI_GPIO_CFG_REG                0x00
  24 #define LPI_GPIO_PULL_MASK              GENMASK(1, 0)
  25 #define LPI_GPIO_FUNCTION_MASK          GENMASK(5, 2)
  26 #define LPI_GPIO_OUT_STRENGTH_MASK      GENMASK(8, 6)
  27 #define LPI_GPIO_OE_MASK                BIT(9)
  28 #define LPI_GPIO_VALUE_REG              0x04
  29 #define LPI_GPIO_VALUE_IN_MASK          BIT(0)
  30 #define LPI_GPIO_VALUE_OUT_MASK         BIT(1)
  31
  32 #define LPI_GPIO_BIAS_DISABLE           0x0
  33 #define LPI_GPIO_PULL_DOWN              0x1
  34 #define LPI_GPIO_KEEPER                 0x2
  35 #define LPI_GPIO_PULL_UP                0x3
  36 #define LPI_GPIO_DS_TO_VAL(v)           (v / 2 - 1)
  37 #define LPI_NO_SLEW                             -1
  38
  39 #define LPI_FUNCTION(fname)                                     \
  40         [LPI_MUX_##fname] = {                           \
  41                 .name = #fname,                         \
  42                 .groups = fname##_groups,               \
  43                 .ngroups = ARRAY_SIZE(fname##_groups),  \
  44         }
  45
  46 #define LPI_PINGROUP(id, soff, f1, f2, f3, f4)          \
  47         {                                               \
  48                 .pin = id,                              \
  49                 .slew_offset = soff,                    \
  50                 .funcs = (int[]){                       \
  51                         LPI_MUX_gpio,                   \
  52                         LPI_MUX_##f1,                   \
  53                         LPI_MUX_##f2,                   \
  54                         LPI_MUX_##f3,                   \
  55                         LPI_MUX_##f4,                   \
  56                 },                                      \
  57                 .nfuncs = 5,                            \
  58         }
  59
  60 /*
  61  * Slew rate control is done in the same register as rest of the
  62  * pin configuration.
  63  */
  64 #define LPI_FLAG_SLEW_RATE_SAME_REG                     BIT(0)
  65
  66 struct lpi_pingroup {
  67         unsigned int pin;
  68         /* Bit offset in slew register for SoundWire pins only */
  69         int slew_offset;
  70         unsigned int *funcs;
  71         unsigned int nfuncs;
  72 };
  73
  74 struct lpi_function {
  75         const char *name;
  76         const char * const *groups;
  77         unsigned int ngroups;
  78 };
  79
  80 struct lpi_pinctrl_variant_data {
  81         const struct pinctrl_pin_desc *pins;
  82         int npins;
  83         const struct lpi_pingroup *groups;
  84         int ngroups;
  85         const struct lpi_function *functions;
  86         int nfunctions;
  87         unsigned int flags;
  88 };
  89
  90 int lpi_pinctrl_probe(struct platform_device *pdev);
  91 void lpi_pinctrl_remove(struct platform_device *pdev);
  92
  93 #endif /*__PINCTRL_LPASS_LPI_H__*/