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caa4daa2ae
We use 'priv' for private data but often use 'platdata' for platform data. We can't really use 'pdata' since that is ambiguous (it could mean private or platform data). Rename some of the latter variables to end with 'plat' for consistency. Signed-off-by: Simon Glass <sjg@chromium.org>
149 lines
3.4 KiB
C
149 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2019 DEIF A/S
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*
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* GPIO driver to set/clear SPISEL_BOOT pin on mpc83xx.
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*/
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#include <common.h>
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#include <log.h>
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#include <dm.h>
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#include <mapmem.h>
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#include <asm/gpio.h>
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struct mpc83xx_spisel_boot {
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u32 __iomem *spi_cs;
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ulong addr;
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uint gpio_count;
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ulong type;
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};
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static u32 gpio_mask(uint gpio)
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{
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return (1U << (31 - (gpio)));
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}
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static int mpc83xx_spisel_boot_direction_input(struct udevice *dev, uint gpio)
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{
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return -EINVAL;
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}
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static int mpc83xx_spisel_boot_set_value(struct udevice *dev, uint gpio, int value)
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{
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struct mpc83xx_spisel_boot *data = dev_get_priv(dev);
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debug("%s: gpio=%d, value=%u, gpio_mask=0x%08x\n", __func__,
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gpio, value, gpio_mask(gpio));
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if (value)
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setbits_be32(data->spi_cs, gpio_mask(gpio));
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else
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clrbits_be32(data->spi_cs, gpio_mask(gpio));
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return 0;
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}
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static int mpc83xx_spisel_boot_direction_output(struct udevice *dev, uint gpio, int value)
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{
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return 0;
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}
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static int mpc83xx_spisel_boot_get_value(struct udevice *dev, uint gpio)
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{
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struct mpc83xx_spisel_boot *data = dev_get_priv(dev);
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return !!(in_be32(data->spi_cs) & gpio_mask(gpio));
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}
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static int mpc83xx_spisel_boot_get_function(struct udevice *dev, uint gpio)
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{
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return GPIOF_OUTPUT;
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}
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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static int mpc83xx_spisel_boot_ofdata_to_platdata(struct udevice *dev)
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{
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struct mpc8xxx_gpio_plat *plat = dev_get_platdata(dev);
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fdt_addr_t addr;
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u32 reg[2];
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dev_read_u32_array(dev, "reg", reg, 2);
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addr = dev_translate_address(dev, reg);
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plat->addr = addr;
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plat->size = reg[1];
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plat->ngpios = dev_read_u32_default(dev, "ngpios", 1);
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return 0;
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}
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#endif
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static int mpc83xx_spisel_boot_platdata_to_priv(struct udevice *dev)
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{
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struct mpc83xx_spisel_boot *priv = dev_get_priv(dev);
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struct mpc8xxx_gpio_plat *plat = dev_get_platdata(dev);
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unsigned long size = plat->size;
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ulong driver_data = dev_get_driver_data(dev);
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if (size == 0)
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size = 0x04;
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priv->addr = plat->addr;
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priv->spi_cs = map_sysmem(plat->addr, size);
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if (!priv->spi_cs)
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return -ENOMEM;
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priv->gpio_count = plat->ngpios;
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priv->type = driver_data;
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return 0;
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}
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static int mpc83xx_spisel_boot_probe(struct udevice *dev)
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{
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struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
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struct mpc83xx_spisel_boot *data = dev_get_priv(dev);
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char name[32], *str;
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mpc83xx_spisel_boot_platdata_to_priv(dev);
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snprintf(name, sizeof(name), "MPC@%lx_", data->addr);
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str = strdup(name);
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if (!str)
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return -ENOMEM;
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uc_priv->bank_name = str;
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uc_priv->gpio_count = data->gpio_count;
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return 0;
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}
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static const struct dm_gpio_ops mpc83xx_spisel_boot_ops = {
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.direction_input = mpc83xx_spisel_boot_direction_input,
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.direction_output = mpc83xx_spisel_boot_direction_output,
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.get_value = mpc83xx_spisel_boot_get_value,
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.set_value = mpc83xx_spisel_boot_set_value,
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.get_function = mpc83xx_spisel_boot_get_function,
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};
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static const struct udevice_id mpc83xx_spisel_boot_ids[] = {
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{ .compatible = "fsl,mpc8309-spisel-boot" },
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{ .compatible = "fsl,mpc83xx-spisel-boot" },
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{ /* sentinel */ }
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};
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U_BOOT_DRIVER(spisel_boot_mpc83xx) = {
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.name = "spisel_boot_mpc83xx",
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.id = UCLASS_GPIO,
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.ops = &mpc83xx_spisel_boot_ops,
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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.ofdata_to_platdata = mpc83xx_spisel_boot_ofdata_to_platdata,
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.plat_auto = sizeof(struct mpc8xxx_gpio_plat),
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.of_match = mpc83xx_spisel_boot_ids,
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#endif
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.probe = mpc83xx_spisel_boot_probe,
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.priv_auto = sizeof(struct mpc83xx_spisel_boot),
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};
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