1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2019 DEIF A/S
5 * GPIO driver to set/clear SPISEL_BOOT pin on mpc83xx.
14 struct mpc83xx_spisel_boot {
21 static u32 gpio_mask(uint gpio)
23 return (1U << (31 - (gpio)));
26 static int mpc83xx_spisel_boot_direction_input(struct udevice *dev, uint gpio)
31 static int mpc83xx_spisel_boot_set_value(struct udevice *dev, uint gpio, int value)
33 struct mpc83xx_spisel_boot *data = dev_get_priv(dev);
35 debug("%s: gpio=%d, value=%u, gpio_mask=0x%08x\n", __func__,
36 gpio, value, gpio_mask(gpio));
39 setbits_be32(data->spi_cs, gpio_mask(gpio));
41 clrbits_be32(data->spi_cs, gpio_mask(gpio));
46 static int mpc83xx_spisel_boot_direction_output(struct udevice *dev, uint gpio, int value)
51 static int mpc83xx_spisel_boot_get_value(struct udevice *dev, uint gpio)
53 struct mpc83xx_spisel_boot *data = dev_get_priv(dev);
55 return !!(in_be32(data->spi_cs) & gpio_mask(gpio));
58 static int mpc83xx_spisel_boot_get_function(struct udevice *dev, uint gpio)
63 #if CONFIG_IS_ENABLED(OF_CONTROL)
64 static int mpc83xx_spisel_boot_ofdata_to_platdata(struct udevice *dev)
66 struct mpc8xxx_gpio_plat *plat = dev_get_plat(dev);
70 dev_read_u32_array(dev, "reg", reg, 2);
71 addr = dev_translate_address(dev, reg);
75 plat->ngpios = dev_read_u32_default(dev, "ngpios", 1);
81 static int mpc83xx_spisel_boot_platdata_to_priv(struct udevice *dev)
83 struct mpc83xx_spisel_boot *priv = dev_get_priv(dev);
84 struct mpc8xxx_gpio_plat *plat = dev_get_plat(dev);
85 unsigned long size = plat->size;
86 ulong driver_data = dev_get_driver_data(dev);
91 priv->addr = plat->addr;
92 priv->spi_cs = map_sysmem(plat->addr, size);
97 priv->gpio_count = plat->ngpios;
99 priv->type = driver_data;
104 static int mpc83xx_spisel_boot_probe(struct udevice *dev)
106 struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
107 struct mpc83xx_spisel_boot *data = dev_get_priv(dev);
110 mpc83xx_spisel_boot_platdata_to_priv(dev);
112 snprintf(name, sizeof(name), "MPC@%lx_", data->addr);
118 uc_priv->bank_name = str;
119 uc_priv->gpio_count = data->gpio_count;
124 static const struct dm_gpio_ops mpc83xx_spisel_boot_ops = {
125 .direction_input = mpc83xx_spisel_boot_direction_input,
126 .direction_output = mpc83xx_spisel_boot_direction_output,
127 .get_value = mpc83xx_spisel_boot_get_value,
128 .set_value = mpc83xx_spisel_boot_set_value,
129 .get_function = mpc83xx_spisel_boot_get_function,
132 static const struct udevice_id mpc83xx_spisel_boot_ids[] = {
133 { .compatible = "fsl,mpc8309-spisel-boot" },
134 { .compatible = "fsl,mpc83xx-spisel-boot" },
138 U_BOOT_DRIVER(spisel_boot_mpc83xx) = {
139 .name = "spisel_boot_mpc83xx",
141 .ops = &mpc83xx_spisel_boot_ops,
142 #if CONFIG_IS_ENABLED(OF_CONTROL)
143 .ofdata_to_platdata = mpc83xx_spisel_boot_ofdata_to_platdata,
144 .plat_auto = sizeof(struct mpc8xxx_gpio_plat),
145 .of_match = mpc83xx_spisel_boot_ids,
147 .probe = mpc83xx_spisel_boot_probe,
148 .priv_auto = sizeof(struct mpc83xx_spisel_boot),