// SPDX-License-Identifier: GPL-2.0 #include "tw5864.h" void tw5864_indir_writeb(struct tw5864_dev *dev, u16 addr, u8 data) { int retries = 30000; while (tw_readl(TW5864_IND_CTL) & BIT(31) && --retries) ; if (!retries) dev_err(&dev->pci->dev, "tw_indir_writel() retries exhausted before writing\n"); tw_writel(TW5864_IND_DATA, data); tw_writel(TW5864_IND_CTL, addr << 2 | TW5864_RW | TW5864_ENABLE); } u8 tw5864_indir_readb(struct tw5864_dev *dev, u16 addr) { int retries = 30000; while (tw_readl(TW5864_IND_CTL) & BIT(31) && --retries) ; if (!retries) dev_err(&dev->pci->dev, "tw_indir_readl() retries exhausted before reading\n"); tw_writel(TW5864_IND_CTL, addr << 2 | TW5864_ENABLE); retries = 30000; while (tw_readl(TW5864_IND_CTL) & BIT(31) && --retries) ; if (!retries) dev_err(&dev->pci->dev, "tw_indir_readl() retries exhausted at reading\n"); return tw_readl(TW5864_IND_DATA); }