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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com> */ /* #define DEBUG */ #include <common.h> #include <dm.h> #include <log.h> #include <dm/pinctrl.h> #include <linux/bitops.h> static const char * const sandbox_pins[] = { "SCL", "SDA", "TX", "RX", "W1", "GPIO0", "GPIO1", "GPIO2", "GPIO3", }; static const char * const sandbox_pins_muxing[] = { "I2C SCL", "I2C SDA", "Uart TX", "Uart RX", "1-wire gpio", "gpio", "gpio", "gpio", "gpio", }; static const char * const sandbox_groups[] = { "i2c", "serial_a", "serial_b", "spi", "w1", }; static const char * const sandbox_functions[] = { "i2c", "serial", "spi", "w1", "gpio", "gpio", "gpio", "gpio", }; static const struct pinconf_param sandbox_conf_params[] = { { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 }, { "bias-high-impedance", PIN_CONFIG_BIAS_HIGH_IMPEDANCE, 0 }, { "bias-bus-hold", PIN_CONFIG_BIAS_BUS_HOLD, 0 }, { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 }, { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 }, { "bias-pull-pin-default", PIN_CONFIG_BIAS_PULL_PIN_DEFAULT, 1 }, { "drive-open-drain", PIN_CONFIG_DRIVE_OPEN_DRAIN, 0 }, { "drive-open-source", PIN_CONFIG_DRIVE_OPEN_SOURCE, 0 }, { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 }, { "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 }, { "input-disable", PIN_CONFIG_INPUT_ENABLE, 0 }, }; /* bitfield used to save param and value of each pin/selector */ static unsigned int sandbox_pins_param[ARRAY_SIZE(sandbox_pins)]; static unsigned int sandbox_pins_value[ARRAY_SIZE(sandbox_pins)]; static int sandbox_get_pins_count(struct udevice *dev) { return ARRAY_SIZE(sandbox_pins); } static const char *sandbox_get_pin_name(struct udevice *dev, unsigned selector) { return sandbox_pins[selector]; } static int sandbox_get_pin_muxing(struct udevice *dev, unsigned int selector, char *buf, int size) { const struct pinconf_param *p; int i; snprintf(buf, size, "%s", sandbox_pins_muxing[selector]); if (sandbox_pins_param[selector]) { for (i = 0, p = sandbox_conf_params; i < ARRAY_SIZE(sandbox_conf_params); i++, p++) { if ((sandbox_pins_param[selector] & BIT(p->param)) && (!!(sandbox_pins_value[selector] & BIT(p->param)) == p->default_value)) { strncat(buf, " ", size); strncat(buf, p->property, size); } } } strncat(buf, ".", size); return 0; } static int sandbox_get_groups_count(struct udevice *dev) { return ARRAY_SIZE(sandbox_groups); } static const char *sandbox_get_group_name(struct udevice *dev, unsigned selector) { return sandbox_groups[selector]; } static int sandbox_get_functions_count(struct udevice *dev) { return ARRAY_SIZE(sandbox_functions); } static const char *sandbox_get_function_name(struct udevice *dev, unsigned selector) { return sandbox_functions[selector]; } static int sandbox_pinmux_set(struct udevice *dev, unsigned pin_selector, unsigned func_selector) { debug("sandbox pinmux: pin = %d (%s), function = %d (%s)\n", pin_selector, sandbox_get_pin_name(dev, pin_selector), func_selector, sandbox_get_function_name(dev, func_selector)); sandbox_pins_param[pin_selector] = 0; sandbox_pins_value[pin_selector] = 0; return 0; } static int sandbox_pinmux_group_set(struct udevice *dev, unsigned group_selector, unsigned func_selector) { debug("sandbox pinmux: group = %d (%s), function = %d (%s)\n", group_selector, sandbox_get_group_name(dev, group_selector), func_selector, sandbox_get_function_name(dev, func_selector)); return 0; } static int sandbox_pinconf_set(struct udevice *dev, unsigned pin_selector, unsigned param, unsigned argument) { debug("sandbox pinconf: pin = %d (%s), param = %d, arg = %d\n", pin_selector, sandbox_get_pin_name(dev, pin_selector), param, argument); sandbox_pins_param[pin_selector] |= BIT(param); if (argument) sandbox_pins_value[pin_selector] |= BIT(param); else sandbox_pins_value[pin_selector] &= ~BIT(param); return 0; } static int sandbox_pinconf_group_set(struct udevice *dev, unsigned group_selector, unsigned param, unsigned argument) { debug("sandbox pinconf: group = %d (%s), param = %d, arg = %d\n", group_selector, sandbox_get_group_name(dev, group_selector), param, argument); return 0; } const struct pinctrl_ops sandbox_pinctrl_ops = { .get_pins_count = sandbox_get_pins_count, .get_pin_name = sandbox_get_pin_name, .get_pin_muxing = sandbox_get_pin_muxing, .get_groups_count = sandbox_get_groups_count, .get_group_name = sandbox_get_group_name, .get_functions_count = sandbox_get_functions_count, .get_function_name = sandbox_get_function_name, .pinmux_set = sandbox_pinmux_set, .pinmux_group_set = sandbox_pinmux_group_set, .pinconf_num_params = ARRAY_SIZE(sandbox_conf_params), .pinconf_params = sandbox_conf_params, .pinconf_set = sandbox_pinconf_set, .pinconf_group_set = sandbox_pinconf_group_set, .set_state = pinctrl_generic_set_state, }; static const struct udevice_id sandbox_pinctrl_match[] = { { .compatible = "sandbox,pinctrl" }, { /* sentinel */ } }; U_BOOT_DRIVER(sandbox_pinctrl) = { .name = "sandbox_pinctrl", .id = UCLASS_PINCTRL, .of_match = sandbox_pinctrl_match, .ops = &sandbox_pinctrl_ops, }; |