mirror of https://gitee.com/openkylin/linux.git
92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
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/*
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* Scaler library
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*
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* Copyright (c) 2013 Texas Instruments Inc.
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*
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* David Griego, <dagriego@biglakesoftware.com>
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* Dale Farnsworth, <dale@farnsworth.org>
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* Archit Taneja, <archit@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include "sc.h"
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void sc_set_regs_bypass(struct sc_data *sc, u32 *sc_reg0)
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{
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*sc_reg0 |= CFG_SC_BYPASS;
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}
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void sc_dump_regs(struct sc_data *sc)
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{
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struct device *dev = &sc->pdev->dev;
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u32 read_reg(struct sc_data *sc, int offset)
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{
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return ioread32(sc->base + offset);
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}
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#define DUMPREG(r) dev_dbg(dev, "%-35s %08x\n", #r, read_reg(sc, CFG_##r))
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DUMPREG(SC0);
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DUMPREG(SC1);
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DUMPREG(SC2);
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DUMPREG(SC3);
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DUMPREG(SC4);
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DUMPREG(SC5);
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DUMPREG(SC6);
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DUMPREG(SC8);
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DUMPREG(SC9);
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DUMPREG(SC10);
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DUMPREG(SC11);
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DUMPREG(SC12);
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DUMPREG(SC13);
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DUMPREG(SC17);
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DUMPREG(SC18);
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DUMPREG(SC19);
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DUMPREG(SC20);
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DUMPREG(SC21);
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DUMPREG(SC22);
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DUMPREG(SC23);
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DUMPREG(SC24);
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DUMPREG(SC25);
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#undef DUMPREG
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}
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struct sc_data *sc_create(struct platform_device *pdev)
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{
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struct sc_data *sc;
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dev_dbg(&pdev->dev, "sc_create\n");
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sc = devm_kzalloc(&pdev->dev, sizeof(*sc), GFP_KERNEL);
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if (!sc) {
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dev_err(&pdev->dev, "couldn't alloc sc_data\n");
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return ERR_PTR(-ENOMEM);
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}
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sc->pdev = pdev;
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sc->res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sc");
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if (!sc->res) {
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dev_err(&pdev->dev, "missing platform resources data\n");
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return ERR_PTR(-ENODEV);
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}
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sc->base = devm_ioremap_resource(&pdev->dev, sc->res);
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if (!sc->base) {
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dev_err(&pdev->dev, "failed to ioremap\n");
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return ERR_PTR(-ENOMEM);
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}
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return sc;
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}
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