mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 05:04:26 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <asm/io.h>
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#include <dm/pinctrl.h>
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#include <mach/ar71xx_regs.h>
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DECLARE_GLOBAL_DATA_PTR;
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enum periph_id {
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PERIPH_ID_UART0,
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PERIPH_ID_SPI0,
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PERIPH_ID_NONE = -1,
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};
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struct ar933x_pinctrl_priv {
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void __iomem *regs;
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};
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static void pinctrl_ar933x_spi_config(struct ar933x_pinctrl_priv *priv, int cs)
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{
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switch (cs) {
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case 0:
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clrsetbits_be32(priv->regs + AR71XX_GPIO_REG_OE,
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AR933X_GPIO(4), AR933X_GPIO(3) |
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AR933X_GPIO(5) | AR933X_GPIO(2));
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setbits_be32(priv->regs + AR71XX_GPIO_REG_FUNC,
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AR933X_GPIO_FUNC_SPI_EN |
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AR933X_GPIO_FUNC_RES_TRUE);
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break;
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}
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}
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static void pinctrl_ar933x_uart_config(struct ar933x_pinctrl_priv *priv, int uart_id)
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{
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switch (uart_id) {
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case PERIPH_ID_UART0:
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clrsetbits_be32(priv->regs + AR71XX_GPIO_REG_OE,
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AR933X_GPIO(9), AR933X_GPIO(10));
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setbits_be32(priv->regs + AR71XX_GPIO_REG_FUNC,
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AR933X_GPIO_FUNC_UART_EN |
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AR933X_GPIO_FUNC_RES_TRUE);
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break;
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}
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}
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static int ar933x_pinctrl_request(struct udevice *dev, int func, int flags)
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{
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struct ar933x_pinctrl_priv *priv = dev_get_priv(dev);
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debug("%s: func=%x, flags=%x\n", __func__, func, flags);
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switch (func) {
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case PERIPH_ID_SPI0:
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pinctrl_ar933x_spi_config(priv, flags);
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break;
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case PERIPH_ID_UART0:
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pinctrl_ar933x_uart_config(priv, func);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int ar933x_pinctrl_get_periph_id(struct udevice *dev,
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struct udevice *periph)
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{
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u32 cell[2];
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int ret;
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ret = fdtdec_get_int_array(gd->fdt_blob, dev_of_offset(periph),
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"interrupts", cell, ARRAY_SIZE(cell));
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if (ret < 0)
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return -EINVAL;
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switch (cell[0]) {
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case 128:
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return PERIPH_ID_UART0;
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case 129:
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return PERIPH_ID_SPI0;
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}
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return -ENOENT;
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}
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static int ar933x_pinctrl_set_state_simple(struct udevice *dev,
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struct udevice *periph)
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{
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int func;
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func = ar933x_pinctrl_get_periph_id(dev, periph);
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if (func < 0)
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return func;
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return ar933x_pinctrl_request(dev, func, 0);
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}
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static struct pinctrl_ops ar933x_pinctrl_ops = {
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.set_state_simple = ar933x_pinctrl_set_state_simple,
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.request = ar933x_pinctrl_request,
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.get_periph_id = ar933x_pinctrl_get_periph_id,
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};
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static int ar933x_pinctrl_probe(struct udevice *dev)
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{
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struct ar933x_pinctrl_priv *priv = dev_get_priv(dev);
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fdt_addr_t addr;
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addr = devfdt_get_addr(dev);
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if (addr == FDT_ADDR_T_NONE)
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return -EINVAL;
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priv->regs = map_physmem(addr,
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AR71XX_GPIO_SIZE,
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MAP_NOCACHE);
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return 0;
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}
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static const struct udevice_id ar933x_pinctrl_ids[] = {
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{ .compatible = "qca,ar933x-pinctrl" },
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{ }
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};
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U_BOOT_DRIVER(pinctrl_ar933x) = {
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.name = "pinctrl_ar933x",
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.id = UCLASS_PINCTRL,
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.of_match = ar933x_pinctrl_ids,
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.priv_auto_alloc_size = sizeof(struct ar933x_pinctrl_priv),
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.ops = &ar933x_pinctrl_ops,
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.probe = ar933x_pinctrl_probe,
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};
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