mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
128 lines
3.2 KiB
C
128 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 <log.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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{ "SD1", 5, (1 << 0) },
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{ "SD2", 5, (1 << 1) },
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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 = 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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