mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 19:26:16 +09:00
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>
125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2017 Google, Inc
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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 <asm/arch/pinctrl.h>
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#include <asm/arch/scu_ast2500.h>
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#include <dm/pinctrl.h>
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/*
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* This driver works with very simple configuration that has the same name
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* for group and function. This way it is compatible with the Linux Kernel
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* driver.
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*/
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struct ast2500_pinctrl_priv {
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struct ast2500_scu *scu;
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};
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static int ast2500_pinctrl_probe(struct udevice *dev)
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{
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struct ast2500_pinctrl_priv *priv = dev_get_priv(dev);
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priv->scu = ast_get_scu();
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return 0;
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}
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struct ast2500_group_config {
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char *group_name;
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/* Control register number (1-10) */
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unsigned reg_num;
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/* The mask of control bits in the register */
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u32 ctrl_bit_mask;
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};
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static const struct ast2500_group_config ast2500_groups[] = {
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{ "I2C1", 8, (1 << 13) | (1 << 12) },
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{ "I2C2", 8, (1 << 15) | (1 << 14) },
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{ "I2C3", 8, (1 << 16) },
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{ "I2C4", 5, (1 << 17) },
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{ "I2C4", 5, (1 << 17) },
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{ "I2C5", 5, (1 << 18) },
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{ "I2C6", 5, (1 << 19) },
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{ "I2C7", 5, (1 << 20) },
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{ "I2C8", 5, (1 << 21) },
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{ "I2C9", 5, (1 << 22) },
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{ "I2C10", 5, (1 << 23) },
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{ "I2C11", 5, (1 << 24) },
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{ "I2C12", 5, (1 << 25) },
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{ "I2C13", 5, (1 << 26) },
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{ "I2C14", 5, (1 << 27) },
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{ "MAC1LINK", 1, (1 << 0) },
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{ "MDIO1", 3, (1 << 31) | (1 << 30) },
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{ "MAC2LINK", 1, (1 << 1) },
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{ "MDIO2", 5, (1 << 2) },
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};
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static int ast2500_pinctrl_get_groups_count(struct udevice *dev)
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{
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debug("PINCTRL: get_(functions/groups)_count\n");
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return ARRAY_SIZE(ast2500_groups);
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}
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static const char *ast2500_pinctrl_get_group_name(struct udevice *dev,
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unsigned selector)
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{
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debug("PINCTRL: get_(function/group)_name %u\n", selector);
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return ast2500_groups[selector].group_name;
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}
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static int ast2500_pinctrl_group_set(struct udevice *dev, unsigned selector,
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unsigned func_selector)
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{
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struct ast2500_pinctrl_priv *priv = dev_get_priv(dev);
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const struct ast2500_group_config *config;
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u32 *ctrl_reg;
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debug("PINCTRL: group_set <%u, %u>\n", selector, func_selector);
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if (selector >= ARRAY_SIZE(ast2500_groups))
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return -EINVAL;
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config = &ast2500_groups[selector];
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if (config->reg_num > 6)
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ctrl_reg = &priv->scu->pinmux_ctrl1[config->reg_num - 7];
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else
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ctrl_reg = &priv->scu->pinmux_ctrl[config->reg_num - 1];
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ast_scu_unlock(priv->scu);
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setbits_le32(ctrl_reg, config->ctrl_bit_mask);
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ast_scu_lock(priv->scu);
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return 0;
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}
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static struct pinctrl_ops ast2500_pinctrl_ops = {
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.set_state = pinctrl_generic_set_state,
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.get_groups_count = ast2500_pinctrl_get_groups_count,
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.get_group_name = ast2500_pinctrl_get_group_name,
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.get_functions_count = ast2500_pinctrl_get_groups_count,
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.get_function_name = ast2500_pinctrl_get_group_name,
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.pinmux_group_set = ast2500_pinctrl_group_set,
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};
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static const struct udevice_id ast2500_pinctrl_ids[] = {
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{ .compatible = "aspeed,ast2500-pinctrl" },
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{ .compatible = "aspeed,g5-pinctrl" },
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{ }
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};
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U_BOOT_DRIVER(pinctrl_ast2500) = {
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.name = "aspeed_ast2500_pinctrl",
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.id = UCLASS_PINCTRL,
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.of_match = ast2500_pinctrl_ids,
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.priv_auto_alloc_size = sizeof(struct ast2500_pinctrl_priv),
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.ops = &ast2500_pinctrl_ops,
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.probe = ast2500_pinctrl_probe,
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};
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