git.sur5r.net Git - u-boot/blob - drivers/pinctrl/pinctrl-sandbox.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2015  Masahiro Yamada <yamada.masahiro@socionext.com>
   4  */
   5
   6 /* #define DEBUG */
   7
   8 #include <common.h>
   9 #include <dm.h>
  10 #include <dm/pinctrl.h>
  11
  12 static const char * const sandbox_pins[] = {
  13         "SCL",
  14         "SDA",
  15         "TX",
  16         "RX",
  17 };
  18
  19 static const char * const sandbox_groups[] = {
  20         "i2c",
  21         "serial_a",
  22         "serial_b",
  23         "spi",
  24 };
  25
  26 static const char * const sandbox_functions[] = {
  27         "i2c",
  28         "serial",
  29         "spi",
  30 };
  31
  32 static const struct pinconf_param sandbox_conf_params[] = {
  33         { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
  34         { "bias-high-impedance", PIN_CONFIG_BIAS_HIGH_IMPEDANCE, 0 },
  35         { "bias-bus-hold", PIN_CONFIG_BIAS_BUS_HOLD, 0 },
  36         { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 },
  37         { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 },
  38         { "bias-pull-pin-default", PIN_CONFIG_BIAS_PULL_PIN_DEFAULT, 1 },
  39         { "drive-open-drain", PIN_CONFIG_DRIVE_OPEN_DRAIN, 0 },
  40         { "drive-open-source", PIN_CONFIG_DRIVE_OPEN_SOURCE, 0 },
  41         { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 },
  42         { "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 },
  43         { "input-disable", PIN_CONFIG_INPUT_ENABLE, 0 },
  44 };
  45
  46 static int sandbox_get_pins_count(struct udevice *dev)
  47 {
  48         return ARRAY_SIZE(sandbox_pins);
  49 }
  50
  51 static const char *sandbox_get_pin_name(struct udevice *dev, unsigned selector)
  52 {
  53         return sandbox_pins[selector];
  54 }
  55
  56 static int sandbox_get_groups_count(struct udevice *dev)
  57 {
  58         return ARRAY_SIZE(sandbox_groups);
  59 }
  60
  61 static const char *sandbox_get_group_name(struct udevice *dev,
  62                                           unsigned selector)
  63 {
  64         return sandbox_groups[selector];
  65 }
  66
  67 static int sandbox_get_functions_count(struct udevice *dev)
  68 {
  69         return ARRAY_SIZE(sandbox_functions);
  70 }
  71
  72 static const char *sandbox_get_function_name(struct udevice *dev,
  73                                              unsigned selector)
  74 {
  75         return sandbox_functions[selector];
  76 }
  77
  78 static int sandbox_pinmux_set(struct udevice *dev, unsigned pin_selector,
  79                               unsigned func_selector)
  80 {
  81         debug("sandbox pinmux: pin = %d (%s), function = %d (%s)\n",
  82               pin_selector, sandbox_get_pin_name(dev, pin_selector),
  83               func_selector, sandbox_get_function_name(dev, func_selector));
  84
  85         return 0;
  86 }
  87
  88 static int sandbox_pinmux_group_set(struct udevice *dev,
  89                                     unsigned group_selector,
  90                                     unsigned func_selector)
  91 {
  92         debug("sandbox pinmux: group = %d (%s), function = %d (%s)\n",
  93               group_selector, sandbox_get_group_name(dev, group_selector),
  94               func_selector, sandbox_get_function_name(dev, func_selector));
  95
  96         return 0;
  97 }
  98
  99 static int sandbox_pinconf_set(struct udevice *dev, unsigned pin_selector,
 100                                unsigned param, unsigned argument)
 101 {
 102         debug("sandbox pinconf: pin = %d (%s), param = %d, arg = %d\n",
 103               pin_selector, sandbox_get_pin_name(dev, pin_selector),
 104               param, argument);
 105
 106         return 0;
 107 }
 108
 109 static int sandbox_pinconf_group_set(struct udevice *dev,
 110                                      unsigned group_selector,
 111                                      unsigned param, unsigned argument)
 112 {
 113         debug("sandbox pinconf: group = %d (%s), param = %d, arg = %d\n",
 114               group_selector, sandbox_get_group_name(dev, group_selector),
 115               param, argument);
 116
 117         return 0;
 118 }
 119
 120 const struct pinctrl_ops sandbox_pinctrl_ops = {
 121         .get_pins_count = sandbox_get_pins_count,
 122         .get_pin_name = sandbox_get_pin_name,
 123         .get_groups_count = sandbox_get_groups_count,
 124         .get_group_name = sandbox_get_group_name,
 125         .get_functions_count = sandbox_get_functions_count,
 126         .get_function_name = sandbox_get_function_name,
 127         .pinmux_set = sandbox_pinmux_set,
 128         .pinmux_group_set = sandbox_pinmux_group_set,
 129         .pinconf_num_params = ARRAY_SIZE(sandbox_conf_params),
 130         .pinconf_params = sandbox_conf_params,
 131         .pinconf_set = sandbox_pinconf_set,
 132         .pinconf_group_set = sandbox_pinconf_group_set,
 133         .set_state = pinctrl_generic_set_state,
 134 };
 135
 136 static const struct udevice_id sandbox_pinctrl_match[] = {
 137         { .compatible = "sandbox,pinctrl" },
 138         { /* sentinel */ }
 139 };
 140
 141 U_BOOT_DRIVER(sandbox_pinctrl) = {
 142         .name = "sandbox_pinctrl",
 143         .id = UCLASS_PINCTRL,
 144         .of_match = sandbox_pinctrl_match,
 145         .ops = &sandbox_pinctrl_ops,
 146 };