5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
39 lines
930 B
C
39 lines
930 B
C
// SPDX-License-Identifier: GPL-2.0
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#include "tw5864.h"
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void tw5864_indir_writeb(struct tw5864_dev *dev, u16 addr, u8 data)
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{
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int retries = 30000;
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while (tw_readl(TW5864_IND_CTL) & BIT(31) && --retries)
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;
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if (!retries)
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dev_err(&dev->pci->dev,
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"tw_indir_writel() retries exhausted before writing\n");
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tw_writel(TW5864_IND_DATA, data);
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tw_writel(TW5864_IND_CTL, addr << 2 | TW5864_RW | TW5864_ENABLE);
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}
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u8 tw5864_indir_readb(struct tw5864_dev *dev, u16 addr)
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{
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int retries = 30000;
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while (tw_readl(TW5864_IND_CTL) & BIT(31) && --retries)
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;
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if (!retries)
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dev_err(&dev->pci->dev,
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"tw_indir_readl() retries exhausted before reading\n");
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tw_writel(TW5864_IND_CTL, addr << 2 | TW5864_ENABLE);
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retries = 30000;
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while (tw_readl(TW5864_IND_CTL) & BIT(31) && --retries)
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;
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if (!retries)
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dev_err(&dev->pci->dev,
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"tw_indir_readl() retries exhausted at reading\n");
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return tw_readl(TW5864_IND_DATA);
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}
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