113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2023 ArtInChip Technology Co.,Ltd
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* Author: Huahui Mai <huahui.mai@artinchip.com>
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*/
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#define LOG_CATEGORY UCLASS_GE
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#include <common.h>
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#include <dm.h>
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#include <clk.h>
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#include <reset.h>
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#include <errno.h>
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#include <log.h>
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#include <artinchip_ge.h>
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#include <dm/device_compat.h>
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#include <dm/device-internal.h>
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#include <dm/uclass-internal.h>
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struct aic_ge_priv {
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struct clk clk;
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struct reset_ctl reset;
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ulong mclk_rate;
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};
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static int aic_ge_open(struct udevice *dev)
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{
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struct aic_ge_priv *priv = dev_get_priv(dev);
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int ret;
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ret = clk_enable(&priv->clk);
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if (ret) {
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dev_err(dev, "Failed to enable GE clock\n");
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return ret;
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}
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ret = clk_set_rate(&priv->clk, priv->mclk_rate);
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if (ret) {
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dev_err(dev, "Failed to set CLK_GE %ld\n", priv->mclk_rate);
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return ret;
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}
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ret = reset_deassert(&priv->reset);
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if (ret) {
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dev_err(dev, "Failed to deassert GE reset\n");
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return ret;
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}
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return ret;
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}
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static void aic_ge_close(struct udevice *dev)
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{
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struct aic_ge_priv *priv = dev_get_priv(dev);
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if (clk_valid(&priv->clk))
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clk_disable(&priv->clk);
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if (reset_valid(&priv->reset))
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reset_assert(&priv->reset);
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}
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static int aic_ge_probe(struct udevice *dev)
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{
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int ret = 0;
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struct aic_ge_priv *priv = dev_get_priv(dev);
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ofnode node = dev_ofnode(dev);
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ret = clk_get_by_index(dev, 0, &priv->clk);
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if (ret < 0) {
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dev_err(dev, "failed to get clock\n");
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return ret;
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}
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ret = ofnode_read_u32(node, "mclk", (u32 *)&priv->mclk_rate);
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if (ret) {
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dev_err(dev, "Can't parse CLK_VE rate\n");
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return -EINVAL;
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}
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ret = reset_get_by_index(dev, 0, &priv->reset);
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if (ret && ret != -ENOENT) {
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dev_err(dev, "failed to get reset\n");
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return ret;
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}
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return ret;
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}
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static const struct ge_ops aic_ge_ops = {
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.open = aic_ge_open,
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.close = aic_ge_close,
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};
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static const struct udevice_id aic_ge_match_ids[] = {
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{.compatible = "artinchip,aic-ge-v1.0"},
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{ /* sentinel*/ },
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};
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U_BOOT_DRIVER(aic_ge) = {
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.name = "aic_ge",
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.id = UCLASS_GE,
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.of_match = aic_ge_match_ids,
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.ops = &aic_ge_ops,
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.priv_auto = sizeof(struct aic_ge_priv),
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.probe = aic_ge_probe,
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};
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UCLASS_DRIVER(ge) = {
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.id = UCLASS_GE,
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.name = "ge",
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};
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